i40e_main.c 303.9 KB
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/*******************************************************************************
 *
 * Intel Ethernet Controller XL710 Family Linux Driver
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 * Copyright(c) 2013 - 2015 Intel Corporation.
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 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
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 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
 * The full GNU General Public License is included in this distribution in
 * the file called "COPYING".
 *
 * Contact Information:
 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 ******************************************************************************/

/* Local includes */
#include "i40e.h"
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#include "i40e_diag.h"
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#ifdef CONFIG_I40E_VXLAN
#include <net/vxlan.h>
#endif
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const char i40e_driver_name[] = "i40e";
static const char i40e_driver_string[] =
			"Intel(R) Ethernet Connection XL710 Network Driver";

#define DRV_KERN "-k"

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#define DRV_VERSION_MAJOR 1
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#define DRV_VERSION_MINOR 4
#define DRV_VERSION_BUILD 2
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#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
	     __stringify(DRV_VERSION_MINOR) "." \
	     __stringify(DRV_VERSION_BUILD)    DRV_KERN
const char i40e_driver_version_str[] = DRV_VERSION;
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static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
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/* a bit of forward declarations */
static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
static void i40e_handle_reset_warning(struct i40e_pf *pf);
static int i40e_add_vsi(struct i40e_vsi *vsi);
static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
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static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
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static int i40e_setup_misc_vector(struct i40e_pf *pf);
static void i40e_determine_queue_usage(struct i40e_pf *pf);
static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
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static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
			      u16 rss_table_size, u16 rss_size);
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static void i40e_fdir_sb_setup(struct i40e_pf *pf);
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static int i40e_veb_get_bw_info(struct i40e_veb *veb);
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/* i40e_pci_tbl - PCI Device ID Table
 *
 * Last entry must be all 0s
 *
 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
 *   Class, Class Mask, private data (not used) }
 */
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static const struct pci_device_id i40e_pci_tbl[] = {
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
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	{PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
	{PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
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	/* required last entry */
	{0, }
};
MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);

#define I40E_MAX_VF_COUNT 128
static int debug = -1;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");

MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);

/**
 * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to fill out
 * @size: size of memory requested
 * @alignment: what to align the allocation to
 **/
int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
			    u64 size, u32 alignment)
{
	struct i40e_pf *pf = (struct i40e_pf *)hw->back;

	mem->size = ALIGN(size, alignment);
	mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
				      &mem->pa, GFP_KERNEL);
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	if (!mem->va)
		return -ENOMEM;
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	return 0;
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}

/**
 * i40e_free_dma_mem_d - OS specific memory free for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to free
 **/
int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
{
	struct i40e_pf *pf = (struct i40e_pf *)hw->back;

	dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
	mem->va = NULL;
	mem->pa = 0;
	mem->size = 0;

	return 0;
}

/**
 * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to fill out
 * @size: size of memory requested
 **/
int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
			     u32 size)
{
	mem->size = size;
	mem->va = kzalloc(size, GFP_KERNEL);

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	if (!mem->va)
		return -ENOMEM;
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	return 0;
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}

/**
 * i40e_free_virt_mem_d - OS specific memory free for shared code
 * @hw:   pointer to the HW structure
 * @mem:  ptr to mem struct to free
 **/
int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
{
	/* it's ok to kfree a NULL pointer */
	kfree(mem->va);
	mem->va = NULL;
	mem->size = 0;

	return 0;
}

/**
 * i40e_get_lump - find a lump of free generic resource
 * @pf: board private structure
 * @pile: the pile of resource to search
 * @needed: the number of items needed
 * @id: an owner id to stick on the items assigned
 *
 * Returns the base item index of the lump, or negative for error
 *
 * The search_hint trick and lack of advanced fit-finding only work
 * because we're highly likely to have all the same size lump requests.
 * Linear search time and any fragmentation should be minimal.
 **/
static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
			 u16 needed, u16 id)
{
	int ret = -ENOMEM;
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	int i, j;
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	if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
		dev_info(&pf->pdev->dev,
			 "param err: pile=%p needed=%d id=0x%04x\n",
			 pile, needed, id);
		return -EINVAL;
	}

	/* start the linear search with an imperfect hint */
	i = pile->search_hint;
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	while (i < pile->num_entries) {
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		/* skip already allocated entries */
		if (pile->list[i] & I40E_PILE_VALID_BIT) {
			i++;
			continue;
		}

		/* do we have enough in this lump? */
		for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
			if (pile->list[i+j] & I40E_PILE_VALID_BIT)
				break;
		}

		if (j == needed) {
			/* there was enough, so assign it to the requestor */
			for (j = 0; j < needed; j++)
				pile->list[i+j] = id | I40E_PILE_VALID_BIT;
			ret = i;
			pile->search_hint = i + j;
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			break;
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		}
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		/* not enough, so skip over it and continue looking */
		i += j;
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	}

	return ret;
}

/**
 * i40e_put_lump - return a lump of generic resource
 * @pile: the pile of resource to search
 * @index: the base item index
 * @id: the owner id of the items assigned
 *
 * Returns the count of items in the lump
 **/
static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
{
	int valid_id = (id | I40E_PILE_VALID_BIT);
	int count = 0;
	int i;

	if (!pile || index >= pile->num_entries)
		return -EINVAL;

	for (i = index;
	     i < pile->num_entries && pile->list[i] == valid_id;
	     i++) {
		pile->list[i] = 0;
		count++;
	}

	if (count && index < pile->search_hint)
		pile->search_hint = index;

	return count;
}

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/**
 * i40e_find_vsi_from_id - searches for the vsi with the given id
 * @pf - the pf structure to search for the vsi
 * @id - id of the vsi it is searching for
 **/
struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
{
	int i;

	for (i = 0; i < pf->num_alloc_vsi; i++)
		if (pf->vsi[i] && (pf->vsi[i]->id == id))
			return pf->vsi[i];

	return NULL;
}

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/**
 * i40e_service_event_schedule - Schedule the service task to wake up
 * @pf: board private structure
 *
 * If not already scheduled, this puts the task into the work queue
 **/
static void i40e_service_event_schedule(struct i40e_pf *pf)
{
	if (!test_bit(__I40E_DOWN, &pf->state) &&
	    !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
	    !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
		schedule_work(&pf->service_task);
}

/**
 * i40e_tx_timeout - Respond to a Tx Hang
 * @netdev: network interface device structure
 *
 * If any port has noticed a Tx timeout, it is likely that the whole
 * device is munged, not just the one netdev port, so go for the full
 * reset.
 **/
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#ifdef I40E_FCOE
void i40e_tx_timeout(struct net_device *netdev)
#else
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static void i40e_tx_timeout(struct net_device *netdev)
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#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
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	struct i40e_ring *tx_ring = NULL;
	unsigned int i, hung_queue = 0;
	u32 head, val;
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	pf->tx_timeout_count++;

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	/* find the stopped queue the same way the stack does */
	for (i = 0; i < netdev->num_tx_queues; i++) {
		struct netdev_queue *q;
		unsigned long trans_start;

		q = netdev_get_tx_queue(netdev, i);
		trans_start = q->trans_start ? : netdev->trans_start;
		if (netif_xmit_stopped(q) &&
		    time_after(jiffies,
			       (trans_start + netdev->watchdog_timeo))) {
			hung_queue = i;
			break;
		}
	}

	if (i == netdev->num_tx_queues) {
		netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
	} else {
		/* now that we have an index, find the tx_ring struct */
		for (i = 0; i < vsi->num_queue_pairs; i++) {
			if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
				if (hung_queue ==
				    vsi->tx_rings[i]->queue_index) {
					tx_ring = vsi->tx_rings[i];
					break;
				}
			}
		}
	}

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	if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
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		pf->tx_timeout_recovery_level = 1;  /* reset after some time */
	else if (time_before(jiffies,
		      (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
		return;   /* don't do any new action before the next timeout */

	if (tx_ring) {
		head = i40e_get_head(tx_ring);
		/* Read interrupt register */
		if (pf->flags & I40E_FLAG_MSIX_ENABLED)
			val = rd32(&pf->hw,
			     I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
						tx_ring->vsi->base_vector - 1));
		else
			val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);

		netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
			    vsi->seid, hung_queue, tx_ring->next_to_clean,
			    head, tx_ring->next_to_use,
			    readl(tx_ring->tail), val);
	}

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	pf->tx_timeout_last_recovery = jiffies;
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	netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
		    pf->tx_timeout_recovery_level, hung_queue);
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	switch (pf->tx_timeout_recovery_level) {
	case 1:
		set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
		break;
	case 2:
		set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
		break;
	case 3:
		set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
		break;
	default:
		netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
		break;
	}
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	i40e_service_event_schedule(pf);
	pf->tx_timeout_recovery_level++;
}

/**
 * i40e_release_rx_desc - Store the new tail and head values
 * @rx_ring: ring to bump
 * @val: new head index
 **/
static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
{
	rx_ring->next_to_use = val;

	/* Force memory writes to complete before letting h/w
	 * know there are new descriptors to fetch.  (Only
	 * applicable for weak-ordered memory model archs,
	 * such as IA-64).
	 */
	wmb();
	writel(val, rx_ring->tail);
}

/**
 * i40e_get_vsi_stats_struct - Get System Network Statistics
 * @vsi: the VSI we care about
 *
 * Returns the address of the device statistics structure.
 * The statistics are actually updated from the service task.
 **/
struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
{
	return &vsi->net_stats;
}

/**
 * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 * @netdev: network interface device structure
 *
 * Returns the address of the device statistics structure.
 * The statistics are actually updated from the service task.
 **/
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#ifdef I40E_FCOE
struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
					     struct net_device *netdev,
					     struct rtnl_link_stats64 *stats)
#else
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static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
					     struct net_device *netdev,
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					     struct rtnl_link_stats64 *stats)
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#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
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	struct i40e_ring *tx_ring, *rx_ring;
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	struct i40e_vsi *vsi = np->vsi;
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	struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
	int i;

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	if (test_bit(__I40E_DOWN, &vsi->state))
		return stats;

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	if (!vsi->tx_rings)
		return stats;

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	rcu_read_lock();
	for (i = 0; i < vsi->num_queue_pairs; i++) {
		u64 bytes, packets;
		unsigned int start;

		tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
		if (!tx_ring)
			continue;

		do {
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			start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
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			packets = tx_ring->stats.packets;
			bytes   = tx_ring->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
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		stats->tx_packets += packets;
		stats->tx_bytes   += bytes;
		rx_ring = &tx_ring[1];

		do {
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			start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
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			packets = rx_ring->stats.packets;
			bytes   = rx_ring->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
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		stats->rx_packets += packets;
		stats->rx_bytes   += bytes;
	}
	rcu_read_unlock();

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	/* following stats updated by i40e_watchdog_subtask() */
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	stats->multicast	= vsi_stats->multicast;
	stats->tx_errors	= vsi_stats->tx_errors;
	stats->tx_dropped	= vsi_stats->tx_dropped;
	stats->rx_errors	= vsi_stats->rx_errors;
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	stats->rx_dropped	= vsi_stats->rx_dropped;
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	stats->rx_crc_errors	= vsi_stats->rx_crc_errors;
	stats->rx_length_errors	= vsi_stats->rx_length_errors;
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	return stats;
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}

/**
 * i40e_vsi_reset_stats - Resets all stats of the given vsi
 * @vsi: the VSI to have its stats reset
 **/
void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
{
	struct rtnl_link_stats64 *ns;
	int i;

	if (!vsi)
		return;

	ns = i40e_get_vsi_stats_struct(vsi);
	memset(ns, 0, sizeof(*ns));
	memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
	memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
	memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
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	if (vsi->rx_rings && vsi->rx_rings[0]) {
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		for (i = 0; i < vsi->num_queue_pairs; i++) {
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			memset(&vsi->rx_rings[i]->stats, 0,
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			       sizeof(vsi->rx_rings[i]->stats));
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			memset(&vsi->rx_rings[i]->rx_stats, 0,
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			       sizeof(vsi->rx_rings[i]->rx_stats));
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			memset(&vsi->tx_rings[i]->stats, 0,
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			       sizeof(vsi->tx_rings[i]->stats));
			memset(&vsi->tx_rings[i]->tx_stats, 0,
			       sizeof(vsi->tx_rings[i]->tx_stats));
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		}
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	}
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	vsi->stat_offsets_loaded = false;
}

/**
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 * i40e_pf_reset_stats - Reset all of the stats for the given PF
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 * @pf: the PF to be reset
 **/
void i40e_pf_reset_stats(struct i40e_pf *pf)
{
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	int i;

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	memset(&pf->stats, 0, sizeof(pf->stats));
	memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
	pf->stat_offsets_loaded = false;
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	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (pf->veb[i]) {
			memset(&pf->veb[i]->stats, 0,
			       sizeof(pf->veb[i]->stats));
			memset(&pf->veb[i]->stats_offsets, 0,
			       sizeof(pf->veb[i]->stats_offsets));
			pf->veb[i]->stat_offsets_loaded = false;
		}
	}
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}

/**
 * i40e_stat_update48 - read and update a 48 bit stat from the chip
 * @hw: ptr to the hardware info
 * @hireg: the high 32 bit reg to read
 * @loreg: the low 32 bit reg to read
 * @offset_loaded: has the initial offset been loaded yet
 * @offset: ptr to current offset value
 * @stat: ptr to the stat
 *
 * Since the device stats are not reset at PFReset, they likely will not
 * be zeroed when the driver starts.  We'll save the first values read
 * and use them as offsets to be subtracted from the raw values in order
 * to report stats that count from zero.  In the process, we also manage
 * the potential roll-over.
 **/
static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
			       bool offset_loaded, u64 *offset, u64 *stat)
{
	u64 new_data;

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	if (hw->device_id == I40E_DEV_ID_QEMU) {
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		new_data = rd32(hw, loreg);
		new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
	} else {
		new_data = rd64(hw, loreg);
	}
	if (!offset_loaded)
		*offset = new_data;
	if (likely(new_data >= *offset))
		*stat = new_data - *offset;
	else
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		*stat = (new_data + BIT_ULL(48)) - *offset;
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	*stat &= 0xFFFFFFFFFFFFULL;
}

/**
 * i40e_stat_update32 - read and update a 32 bit stat from the chip
 * @hw: ptr to the hardware info
 * @reg: the hw reg to read
 * @offset_loaded: has the initial offset been loaded yet
 * @offset: ptr to current offset value
 * @stat: ptr to the stat
 **/
static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
			       bool offset_loaded, u64 *offset, u64 *stat)
{
	u32 new_data;

	new_data = rd32(hw, reg);
	if (!offset_loaded)
		*offset = new_data;
	if (likely(new_data >= *offset))
		*stat = (u32)(new_data - *offset);
	else
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		*stat = (u32)((new_data + BIT_ULL(32)) - *offset);
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}

/**
 * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 * @vsi: the VSI to be updated
 **/
void i40e_update_eth_stats(struct i40e_vsi *vsi)
{
	int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */

	es = &vsi->eth_stats;
	oes = &vsi->eth_stats_offsets;

	/* Gather up the stats that the hw collects */
	i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_errors, &es->tx_errors);
	i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_discards, &es->rx_discards);
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	i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
	i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_errors, &es->tx_errors);
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	i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
			   I40E_GLV_GORCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_bytes, &es->rx_bytes);
	i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
			   I40E_GLV_UPRCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_unicast, &es->rx_unicast);
	i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
			   I40E_GLV_MPRCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_multicast, &es->rx_multicast);
	i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
			   I40E_GLV_BPRCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->rx_broadcast, &es->rx_broadcast);

	i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
			   I40E_GLV_GOTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_bytes, &es->tx_bytes);
	i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
			   I40E_GLV_UPTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_unicast, &es->tx_unicast);
	i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
			   I40E_GLV_MPTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_multicast, &es->tx_multicast);
	i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
			   I40E_GLV_BPTCL(stat_idx),
			   vsi->stat_offsets_loaded,
			   &oes->tx_broadcast, &es->tx_broadcast);
	vsi->stat_offsets_loaded = true;
}

/**
 * i40e_update_veb_stats - Update Switch component statistics
 * @veb: the VEB being updated
 **/
static void i40e_update_veb_stats(struct i40e_veb *veb)
{
	struct i40e_pf *pf = veb->pf;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */
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	struct i40e_veb_tc_stats *veb_oes;
	struct i40e_veb_tc_stats *veb_es;
	int i, idx = 0;
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	idx = veb->stats_idx;
	es = &veb->stats;
	oes = &veb->stats_offsets;
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	veb_es = &veb->tc_stats;
	veb_oes = &veb->tc_stats_offsets;
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	/* Gather up the stats that the hw collects */
	i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_discards, &es->tx_discards);
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	if (hw->revision_id > 0)
		i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
				   veb->stat_offsets_loaded,
				   &oes->rx_unknown_protocol,
				   &es->rx_unknown_protocol);
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	i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_bytes, &es->rx_bytes);
	i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_unicast, &es->rx_unicast);
	i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_multicast, &es->rx_multicast);
	i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->rx_broadcast, &es->rx_broadcast);

	i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_bytes, &es->tx_bytes);
	i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_unicast, &es->tx_unicast);
	i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_multicast, &es->tx_multicast);
	i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
			   veb->stat_offsets_loaded,
			   &oes->tx_broadcast, &es->tx_broadcast);
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	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
				   I40E_GLVEBTC_RPCL(i, idx),
				   veb->stat_offsets_loaded,
				   &veb_oes->tc_rx_packets[i],
				   &veb_es->tc_rx_packets[i]);
		i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
				   I40E_GLVEBTC_RBCL(i, idx),
				   veb->stat_offsets_loaded,
				   &veb_oes->tc_rx_bytes[i],
				   &veb_es->tc_rx_bytes[i]);
		i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
				   I40E_GLVEBTC_TPCL(i, idx),
				   veb->stat_offsets_loaded,
				   &veb_oes->tc_tx_packets[i],
				   &veb_es->tc_tx_packets[i]);
		i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
				   I40E_GLVEBTC_TBCL(i, idx),
				   veb->stat_offsets_loaded,
				   &veb_oes->tc_tx_bytes[i],
				   &veb_es->tc_tx_bytes[i]);
	}
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	veb->stat_offsets_loaded = true;
}

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#ifdef I40E_FCOE
/**
 * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 * @vsi: the VSI that is capable of doing FCoE
 **/
static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_fcoe_stats *ofs;
	struct i40e_fcoe_stats *fs;     /* device's eth stats */
	int idx;

	if (vsi->type != I40E_VSI_FCOE)
		return;

	idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
	fs = &vsi->fcoe_stats;
	ofs = &vsi->fcoe_stats_offsets;

	i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
	i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
	i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
	i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
	i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
	i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
	i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->fcoe_last_error, &fs->fcoe_last_error);
	i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
			   vsi->fcoe_stat_offsets_loaded,
			   &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);

	vsi->fcoe_stat_offsets_loaded = true;
}

#endif
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/**
 * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 * @pf: the corresponding PF
 *
 * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 **/
static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
{
	struct i40e_hw_port_stats *osd = &pf->stats_offsets;
	struct i40e_hw_port_stats *nsd = &pf->stats;
	struct i40e_hw *hw = &pf->hw;
	u64 xoff = 0;

	if ((hw->fc.current_mode != I40E_FC_FULL) &&
	    (hw->fc.current_mode != I40E_FC_RX_PAUSE))
		return;

	xoff = nsd->link_xoff_rx;
	i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xoff_rx, &nsd->link_xoff_rx);

	/* No new LFC xoff rx */
	if (!(nsd->link_xoff_rx - xoff))
		return;

}

/**
 * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 * @pf: the corresponding PF
 *
 * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 **/
static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
{
	struct i40e_hw_port_stats *osd = &pf->stats_offsets;
	struct i40e_hw_port_stats *nsd = &pf->stats;
	bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
	struct i40e_dcbx_config *dcb_cfg;
	struct i40e_hw *hw = &pf->hw;
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	u16 i;
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	u8 tc;

	dcb_cfg = &hw->local_dcbx_config;

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	/* Collect Link XOFF stats when PFC is disabled */
	if (!dcb_cfg->pfc.pfcenable) {
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		i40e_update_link_xoff_rx(pf);
		return;
	}

	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
		u64 prio_xoff = nsd->priority_xoff_rx[i];
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		i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
				   pf->stat_offsets_loaded,
				   &osd->priority_xoff_rx[i],
				   &nsd->priority_xoff_rx[i]);

		/* No new PFC xoff rx */
		if (!(nsd->priority_xoff_rx[i] - prio_xoff))
			continue;
		/* Get the TC for given priority */
		tc = dcb_cfg->etscfg.prioritytable[i];
		xoff[tc] = true;
	}
}

/**
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 * i40e_update_vsi_stats - Update the vsi statistics counters.
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 * @vsi: the VSI to be updated
 *
 * There are a few instances where we store the same stat in a
 * couple of different structs.  This is partly because we have
 * the netdev stats that need to be filled out, which is slightly
 * different from the "eth_stats" defined by the chip and used in
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 * VF communications.  We sort it out here.
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 **/
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static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
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{
	struct i40e_pf *pf = vsi->back;
	struct rtnl_link_stats64 *ons;
	struct rtnl_link_stats64 *ns;   /* netdev stats */
	struct i40e_eth_stats *oes;
	struct i40e_eth_stats *es;     /* device's eth stats */
	u32 tx_restart, tx_busy;
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	struct i40e_ring *p;
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	u32 rx_page, rx_buf;
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	u64 bytes, packets;
	unsigned int start;
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	u64 tx_linearize;
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	u64 tx_force_wb;
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	u64 rx_p, rx_b;
	u64 tx_p, tx_b;
	u16 q;

	if (test_bit(__I40E_DOWN, &vsi->state) ||
	    test_bit(__I40E_CONFIG_BUSY, &pf->state))
		return;

	ns = i40e_get_vsi_stats_struct(vsi);
	ons = &vsi->net_stats_offsets;
	es = &vsi->eth_stats;
	oes = &vsi->eth_stats_offsets;

	/* Gather up the netdev and vsi stats that the driver collects
	 * on the fly during packet processing
	 */
	rx_b = rx_p = 0;
	tx_b = tx_p = 0;
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	tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
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	rx_page = 0;
	rx_buf = 0;
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	rcu_read_lock();
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	for (q = 0; q < vsi->num_queue_pairs; q++) {
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		/* locate Tx ring */
		p = ACCESS_ONCE(vsi->tx_rings[q]);

		do {
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			start = u64_stats_fetch_begin_irq(&p->syncp);
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			packets = p->stats.packets;
			bytes = p->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&p->syncp, start));
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		tx_b += bytes;
		tx_p += packets;
		tx_restart += p->tx_stats.restart_queue;
		tx_busy += p->tx_stats.tx_busy;
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		tx_linearize += p->tx_stats.tx_linearize;
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		tx_force_wb += p->tx_stats.tx_force_wb;
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		/* Rx queue is part of the same block as Tx queue */
		p = &p[1];
		do {
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			start = u64_stats_fetch_begin_irq(&p->syncp);
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			packets = p->stats.packets;
			bytes = p->stats.bytes;
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		} while (u64_stats_fetch_retry_irq(&p->syncp, start));
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		rx_b += bytes;
		rx_p += packets;
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		rx_buf += p->rx_stats.alloc_buff_failed;
		rx_page += p->rx_stats.alloc_page_failed;
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	}
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	rcu_read_unlock();
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	vsi->tx_restart = tx_restart;
	vsi->tx_busy = tx_busy;
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	vsi->tx_linearize = tx_linearize;
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	vsi->tx_force_wb = tx_force_wb;
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	vsi->rx_page_failed = rx_page;
	vsi->rx_buf_failed = rx_buf;

	ns->rx_packets = rx_p;
	ns->rx_bytes = rx_b;
	ns->tx_packets = tx_p;
	ns->tx_bytes = tx_b;

	/* update netdev stats from eth stats */
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	i40e_update_eth_stats(vsi);
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	ons->tx_errors = oes->tx_errors;
	ns->tx_errors = es->tx_errors;
	ons->multicast = oes->rx_multicast;
	ns->multicast = es->rx_multicast;
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	ons->rx_dropped = oes->rx_discards;
	ns->rx_dropped = es->rx_discards;
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	ons->tx_dropped = oes->tx_discards;
	ns->tx_dropped = es->tx_discards;

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	/* pull in a couple PF stats if this is the main vsi */
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	if (vsi == pf->vsi[pf->lan_vsi]) {
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		ns->rx_crc_errors = pf->stats.crc_errors;
		ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
		ns->rx_length_errors = pf->stats.rx_length_errors;
	}
}
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/**
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 * i40e_update_pf_stats - Update the PF statistics counters.
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 * @pf: the PF to be updated
 **/
static void i40e_update_pf_stats(struct i40e_pf *pf)
{
	struct i40e_hw_port_stats *osd = &pf->stats_offsets;
	struct i40e_hw_port_stats *nsd = &pf->stats;
	struct i40e_hw *hw = &pf->hw;
	u32 val;
	int i;
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	i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
			   I40E_GLPRT_GORCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
	i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
			   I40E_GLPRT_GOTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
	i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_discards,
			   &nsd->eth.rx_discards);
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	i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
			   I40E_GLPRT_UPRCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_unicast,
			   &nsd->eth.rx_unicast);
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	i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
			   I40E_GLPRT_MPRCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_multicast,
			   &nsd->eth.rx_multicast);
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	i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
			   I40E_GLPRT_BPRCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.rx_broadcast,
			   &nsd->eth.rx_broadcast);
	i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
			   I40E_GLPRT_UPTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_unicast,
			   &nsd->eth.tx_unicast);
	i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
			   I40E_GLPRT_MPTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_multicast,
			   &nsd->eth.tx_multicast);
	i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
			   I40E_GLPRT_BPTCL(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_broadcast,
			   &nsd->eth.tx_broadcast);
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	i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_dropped_link_down,
			   &nsd->tx_dropped_link_down);
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	i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->crc_errors, &nsd->crc_errors);
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	i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->illegal_bytes, &nsd->illegal_bytes);
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	i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->mac_local_faults,
			   &nsd->mac_local_faults);
	i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->mac_remote_faults,
			   &nsd->mac_remote_faults);
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	i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_length_errors,
			   &nsd->rx_length_errors);
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	i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xon_rx, &nsd->link_xon_rx);
	i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xon_tx, &nsd->link_xon_tx);
	i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
	i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->link_xoff_tx, &nsd->link_xoff_tx);
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	for (i = 0; i < 8; i++) {
		i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xon_rx[i],
				   &nsd->priority_xon_rx[i]);
		i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xon_tx[i],
				   &nsd->priority_xon_tx[i]);
		i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
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				   pf->stat_offsets_loaded,
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				   &osd->priority_xoff_tx[i],
				   &nsd->priority_xoff_tx[i]);
		i40e_stat_update32(hw,
				   I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1077
				   pf->stat_offsets_loaded,
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				   &osd->priority_xon_2_xoff[i],
				   &nsd->priority_xon_2_xoff[i]);
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	}

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	i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
			   I40E_GLPRT_PRC64L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_64, &nsd->rx_size_64);
	i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
			   I40E_GLPRT_PRC127L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_127, &nsd->rx_size_127);
	i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
			   I40E_GLPRT_PRC255L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_255, &nsd->rx_size_255);
	i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
			   I40E_GLPRT_PRC511L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_511, &nsd->rx_size_511);
	i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
			   I40E_GLPRT_PRC1023L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_1023, &nsd->rx_size_1023);
	i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
			   I40E_GLPRT_PRC1522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_1522, &nsd->rx_size_1522);
	i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
			   I40E_GLPRT_PRC9522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_size_big, &nsd->rx_size_big);

	i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
			   I40E_GLPRT_PTC64L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_64, &nsd->tx_size_64);
	i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
			   I40E_GLPRT_PTC127L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_127, &nsd->tx_size_127);
	i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
			   I40E_GLPRT_PTC255L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_255, &nsd->tx_size_255);
	i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
			   I40E_GLPRT_PTC511L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_511, &nsd->tx_size_511);
	i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
			   I40E_GLPRT_PTC1023L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_1023, &nsd->tx_size_1023);
	i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
			   I40E_GLPRT_PTC1522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_1522, &nsd->tx_size_1522);
	i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
			   I40E_GLPRT_PTC9522L(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->tx_size_big, &nsd->tx_size_big);

	i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_undersize, &nsd->rx_undersize);
	i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_fragments, &nsd->rx_fragments);
	i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_oversize, &nsd->rx_oversize);
	i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->rx_jabber, &nsd->rx_jabber);

1153
	/* FDIR stats */
1154 1155
	i40e_stat_update32(hw,
			   I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1156 1157
			   pf->stat_offsets_loaded,
			   &osd->fd_atr_match, &nsd->fd_atr_match);
1158 1159
	i40e_stat_update32(hw,
			   I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1160 1161
			   pf->stat_offsets_loaded,
			   &osd->fd_sb_match, &nsd->fd_sb_match);
1162 1163 1164 1165
	i40e_stat_update32(hw,
		      I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
		      pf->stat_offsets_loaded,
		      &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
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	val = rd32(hw, I40E_PRTPM_EEE_STAT);
	nsd->tx_lpi_status =
		       (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
			I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
	nsd->rx_lpi_status =
		       (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
			I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
	i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
			   pf->stat_offsets_loaded,
			   &osd->tx_lpi_count, &nsd->tx_lpi_count);
	i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
			   pf->stat_offsets_loaded,
			   &osd->rx_lpi_count, &nsd->rx_lpi_count);

1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
	    !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
		nsd->fd_sb_status = true;
	else
		nsd->fd_sb_status = false;

	if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
	    !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
		nsd->fd_atr_status = true;
	else
		nsd->fd_atr_status = false;

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	pf->stat_offsets_loaded = true;
}

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/**
 * i40e_update_stats - Update the various statistics counters.
 * @vsi: the VSI to be updated
 *
 * Update the various stats for this VSI and its related entities.
 **/
void i40e_update_stats(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;

	if (vsi == pf->vsi[pf->lan_vsi])
		i40e_update_pf_stats(pf);

	i40e_update_vsi_stats(vsi);
1210 1211 1212
#ifdef I40E_FCOE
	i40e_update_fcoe_stats(vsi);
#endif
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}

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/**
 * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address
 * @vlan: the vlan
1220
 * @is_vf: make sure its a VF filter, else doesn't matter
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 * @is_netdev: make sure its a netdev filter, else doesn't matter
 *
 * Returns ptr to the filter object or NULL
 **/
static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
						u8 *macaddr, s16 vlan,
						bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	if (!vsi || !macaddr)
		return NULL;

	list_for_each_entry(f, &vsi->mac_filter_list, list) {
		if ((ether_addr_equal(macaddr, f->macaddr)) &&
		    (vlan == f->vlan)    &&
		    (!is_vf || f->is_vf) &&
		    (!is_netdev || f->is_netdev))
			return f;
	}
	return NULL;
}

/**
 * i40e_find_mac - Find a mac addr in the macvlan filters list
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address we are searching for
1248
 * @is_vf: make sure its a VF filter, else doesn't matter
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 * @is_netdev: make sure its a netdev filter, else doesn't matter
 *
 * Returns the first filter with the provided MAC address or NULL if
 * MAC address was not found
 **/
struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
				      bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	if (!vsi || !macaddr)
		return NULL;

	list_for_each_entry(f, &vsi->mac_filter_list, list) {
		if ((ether_addr_equal(macaddr, f->macaddr)) &&
		    (!is_vf || f->is_vf) &&
		    (!is_netdev || f->is_netdev))
			return f;
	}
	return NULL;
}

/**
 * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
 * @vsi: the VSI to be searched
 *
 * Returns true if VSI is in vlan mode or false otherwise
 **/
bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
{
	struct i40e_mac_filter *f;

	/* Only -1 for all the filters denotes not in vlan mode
	 * so we have to go through all the list in order to make sure
	 */
	list_for_each_entry(f, &vsi->mac_filter_list, list) {
1285
		if (f->vlan >= 0 || vsi->info.pvid)
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			return true;
	}

	return false;
}

/**
 * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
 * @vsi: the VSI to be searched
 * @macaddr: the mac address to be filtered
1296
 * @is_vf: true if it is a VF
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 * @is_netdev: true if it is a netdev
 *
 * Goes through all the macvlan filters and adds a
 * macvlan filter for each unique vlan that already exists
 *
 * Returns first filter found on success, else NULL
 **/
struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
					     bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	list_for_each_entry(f, &vsi->mac_filter_list, list) {
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		if (vsi->info.pvid)
			f->vlan = le16_to_cpu(vsi->info.pvid);
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		if (!i40e_find_filter(vsi, macaddr, f->vlan,
				      is_vf, is_netdev)) {
			if (!i40e_add_filter(vsi, macaddr, f->vlan,
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					     is_vf, is_netdev))
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				return NULL;
		}
	}

	return list_first_entry_or_null(&vsi->mac_filter_list,
					struct i40e_mac_filter, list);
}

1324 1325 1326 1327
/**
 * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
 * @vsi: the PF Main VSI - inappropriate for any other VSI
 * @macaddr: the MAC address
1328 1329 1330
 *
 * Some older firmware configurations set up a default promiscuous VLAN
 * filter that needs to be removed.
1331
 **/
1332
static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1333 1334 1335
{
	struct i40e_aqc_remove_macvlan_element_data element;
	struct i40e_pf *pf = vsi->back;
1336
	i40e_status ret;
1337 1338 1339

	/* Only appropriate for the PF main VSI */
	if (vsi->type != I40E_VSI_MAIN)
1340
		return -EINVAL;
1341

1342
	memset(&element, 0, sizeof(element));
1343 1344 1345 1346
	ether_addr_copy(element.mac_addr, macaddr);
	element.vlan_tag = 0;
	element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
			I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1347 1348
	ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
	if (ret)
1349 1350 1351
		return -ENOENT;

	return 0;
1352 1353
}

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/**
 * i40e_add_filter - Add a mac/vlan filter to the VSI
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address
 * @vlan: the vlan
1359
 * @is_vf: make sure its a VF filter, else doesn't matter
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 * @is_netdev: make sure its a netdev filter, else doesn't matter
 *
 * Returns ptr to the filter object or NULL when no memory available.
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 *
 * NOTE: This function is expected to be called with mac_filter_list_lock
 * being held.
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 **/
struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
					u8 *macaddr, s16 vlan,
					bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	if (!vsi || !macaddr)
		return NULL;

	f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
	if (!f) {
		f = kzalloc(sizeof(*f), GFP_ATOMIC);
		if (!f)
			goto add_filter_out;

1382
		ether_addr_copy(f->macaddr, macaddr);
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		f->vlan = vlan;
		f->changed = true;

		INIT_LIST_HEAD(&f->list);
		list_add(&f->list, &vsi->mac_filter_list);
	}

	/* increment counter and add a new flag if needed */
	if (is_vf) {
		if (!f->is_vf) {
			f->is_vf = true;
			f->counter++;
		}
	} else if (is_netdev) {
		if (!f->is_netdev) {
			f->is_netdev = true;
			f->counter++;
		}
	} else {
		f->counter++;
	}

	/* changed tells sync_filters_subtask to
	 * push the filter down to the firmware
	 */
	if (f->changed) {
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
		vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
	}

add_filter_out:
	return f;
}

/**
 * i40e_del_filter - Remove a mac/vlan filter from the VSI
 * @vsi: the VSI to be searched
 * @macaddr: the MAC address
 * @vlan: the vlan
1422
 * @is_vf: make sure it's a VF filter, else doesn't matter
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 * @is_netdev: make sure it's a netdev filter, else doesn't matter
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 *
 * NOTE: This function is expected to be called with mac_filter_list_lock
 * being held.
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 **/
void i40e_del_filter(struct i40e_vsi *vsi,
		     u8 *macaddr, s16 vlan,
		     bool is_vf, bool is_netdev)
{
	struct i40e_mac_filter *f;

	if (!vsi || !macaddr)
		return;

	f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
	if (!f || f->counter == 0)
		return;

	if (is_vf) {
		if (f->is_vf) {
			f->is_vf = false;
			f->counter--;
		}
	} else if (is_netdev) {
		if (f->is_netdev) {
			f->is_netdev = false;
			f->counter--;
		}
	} else {
1452
		/* make sure we don't remove a filter in use by VF or netdev */
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		int min_f = 0;
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		min_f += (f->is_vf ? 1 : 0);
		min_f += (f->is_netdev ? 1 : 0);

		if (f->counter > min_f)
			f->counter--;
	}

	/* counter == 0 tells sync_filters_subtask to
	 * remove the filter from the firmware's list
	 */
	if (f->counter == 0) {
		f->changed = true;
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
		vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
	}
}

/**
 * i40e_set_mac - NDO callback to set mac address
 * @netdev: network interface device structure
 * @p: pointer to an address structure
 *
 * Returns 0 on success, negative on failure
 **/
1479 1480 1481
#ifdef I40E_FCOE
int i40e_set_mac(struct net_device *netdev, void *p)
#else
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static int i40e_set_mac(struct net_device *netdev, void *p)
1483
#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
1487 1488
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
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	struct sockaddr *addr = p;
	struct i40e_mac_filter *f;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EADDRNOTAVAIL;

1495 1496 1497 1498 1499
	if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
		netdev_info(netdev, "already using mac address %pM\n",
			    addr->sa_data);
		return 0;
	}
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1501 1502 1503 1504
	if (test_bit(__I40E_DOWN, &vsi->back->state) ||
	    test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
		return -EADDRNOTAVAIL;

1505 1506 1507 1508 1509 1510
	if (ether_addr_equal(hw->mac.addr, addr->sa_data))
		netdev_info(netdev, "returning to hw mac address %pM\n",
			    hw->mac.addr);
	else
		netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);

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	if (vsi->type == I40E_VSI_MAIN) {
		i40e_status ret;
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		ret = i40e_aq_mac_address_write(&vsi->back->hw,
1515
						I40E_AQC_WRITE_TYPE_LAA_WOL,
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						addr->sa_data, NULL);
		if (ret) {
			netdev_info(netdev,
				    "Addr change for Main VSI failed: %d\n",
				    ret);
			return -EADDRNOTAVAIL;
		}
	}

1525 1526
	if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
		struct i40e_aqc_remove_macvlan_element_data element;
1527

1528 1529 1530 1531 1532
		memset(&element, 0, sizeof(element));
		ether_addr_copy(element.mac_addr, netdev->dev_addr);
		element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
		i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
	} else {
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		spin_lock_bh(&vsi->mac_filter_list_lock);
1534 1535
		i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
				false, false);
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		spin_unlock_bh(&vsi->mac_filter_list_lock);
1537
	}
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1539 1540 1541 1542 1543 1544 1545 1546
	if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
		struct i40e_aqc_add_macvlan_element_data element;

		memset(&element, 0, sizeof(element));
		ether_addr_copy(element.mac_addr, hw->mac.addr);
		element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
		i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
	} else {
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		spin_lock_bh(&vsi->mac_filter_list_lock);
1548 1549 1550 1551
		f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
				    false, false);
		if (f)
			f->is_laa = true;
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		spin_unlock_bh(&vsi->mac_filter_list_lock);
1553 1554
	}

1555
	i40e_sync_vsi_filters(vsi, false);
1556
	ether_addr_copy(netdev->dev_addr, addr->sa_data);
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	return 0;
}

/**
 * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
 * @vsi: the VSI being setup
 * @ctxt: VSI context structure
 * @enabled_tc: Enabled TCs bitmap
 * @is_add: True if called before Add VSI
 *
 * Setup VSI queue mapping for enabled traffic classes.
 **/
1570 1571 1572 1573 1574 1575
#ifdef I40E_FCOE
void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
			      struct i40e_vsi_context *ctxt,
			      u8 enabled_tc,
			      bool is_add)
#else
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static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
				     struct i40e_vsi_context *ctxt,
				     u8 enabled_tc,
				     bool is_add)
1580
#endif
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{
	struct i40e_pf *pf = vsi->back;
	u16 sections = 0;
	u8 netdev_tc = 0;
	u16 numtc = 0;
	u16 qcount;
	u8 offset;
	u16 qmap;
	int i;
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	u16 num_tc_qps = 0;
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	sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
	offset = 0;

	if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
		/* Find numtc from enabled TC bitmap */
		for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1598
			if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
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				numtc++;
		}
		if (!numtc) {
			dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
			numtc = 1;
		}
	} else {
		/* At least TC0 is enabled in case of non-DCB case */
		numtc = 1;
	}

	vsi->tc_config.numtc = numtc;
	vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
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	/* Number of queues per enabled TC */
1613 1614 1615 1616
	/* In MFP case we can have a much lower count of MSIx
	 * vectors available and so we need to lower the used
	 * q count.
	 */
1617 1618 1619 1620
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
	else
		qcount = vsi->alloc_queue_pairs;
1621
	num_tc_qps = qcount / numtc;
1622
	num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
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	/* Setup queue offset/count for all TCs for given VSI */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		/* See if the given TC is enabled for the given VSI */
1627 1628
		if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
			/* TC is enabled */
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			int pow, num_qps;

			switch (vsi->type) {
			case I40E_VSI_MAIN:
1633 1634
				qcount = min_t(int, pf->alloc_rss_size,
					       num_tc_qps);
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				break;
1636 1637 1638 1639 1640
#ifdef I40E_FCOE
			case I40E_VSI_FCOE:
				qcount = num_tc_qps;
				break;
#endif
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			case I40E_VSI_FDIR:
			case I40E_VSI_SRIOV:
			case I40E_VSI_VMDQ2:
			default:
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				qcount = num_tc_qps;
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				WARN_ON(i != 0);
				break;
			}
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1649 1650
			vsi->tc_config.tc_info[i].qoffset = offset;
			vsi->tc_config.tc_info[i].qcount = qcount;
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			/* find the next higher power-of-2 of num queue pairs */
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			num_qps = qcount;
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			pow = 0;
1655
			while (num_qps && (BIT_ULL(pow) < qcount)) {
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				pow++;
				num_qps >>= 1;
			}

			vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
			qmap =
			    (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
			    (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);

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			offset += qcount;
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		} else {
			/* TC is not enabled so set the offset to
			 * default queue and allocate one queue
			 * for the given TC.
			 */
			vsi->tc_config.tc_info[i].qoffset = 0;
			vsi->tc_config.tc_info[i].qcount = 1;
			vsi->tc_config.tc_info[i].netdev_tc = 0;

			qmap = 0;
		}
		ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
	}

	/* Set actual Tx/Rx queue pairs */
	vsi->num_queue_pairs = offset;
1682 1683 1684
	if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
		if (vsi->req_queue_pairs > 0)
			vsi->num_queue_pairs = vsi->req_queue_pairs;
1685
		else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1686 1687
			vsi->num_queue_pairs = pf->num_lan_msix;
	}
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	/* Scheduler section valid can only be set for ADD VSI */
	if (is_add) {
		sections |= I40E_AQ_VSI_PROP_SCHED_VALID;

		ctxt->info.up_enable_bits = enabled_tc;
	}
	if (vsi->type == I40E_VSI_SRIOV) {
		ctxt->info.mapping_flags |=
				     cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
		for (i = 0; i < vsi->num_queue_pairs; i++)
			ctxt->info.queue_mapping[i] =
					       cpu_to_le16(vsi->base_queue + i);
	} else {
		ctxt->info.mapping_flags |=
					cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
		ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
	}
	ctxt->info.valid_sections |= cpu_to_le16(sections);
}

/**
 * i40e_set_rx_mode - NDO callback to set the netdev filters
 * @netdev: network interface device structure
 **/
1713 1714 1715
#ifdef I40E_FCOE
void i40e_set_rx_mode(struct net_device *netdev)
#else
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static void i40e_set_rx_mode(struct net_device *netdev)
1717
#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_mac_filter *f, *ftmp;
	struct i40e_vsi *vsi = np->vsi;
	struct netdev_hw_addr *uca;
	struct netdev_hw_addr *mca;
	struct netdev_hw_addr *ha;

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	spin_lock_bh(&vsi->mac_filter_list_lock);

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	/* add addr if not already in the filter list */
	netdev_for_each_uc_addr(uca, netdev) {
		if (!i40e_find_mac(vsi, uca->addr, false, true)) {
			if (i40e_is_vsi_in_vlan(vsi))
				i40e_put_mac_in_vlan(vsi, uca->addr,
						     false, true);
			else
				i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
						false, true);
		}
	}

	netdev_for_each_mc_addr(mca, netdev) {
		if (!i40e_find_mac(vsi, mca->addr, false, true)) {
			if (i40e_is_vsi_in_vlan(vsi))
				i40e_put_mac_in_vlan(vsi, mca->addr,
						     false, true);
			else
				i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
						false, true);
		}
	}

	/* remove filter if not in netdev list */
	list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {

		if (!f->is_netdev)
			continue;

1757 1758 1759
		netdev_for_each_mc_addr(mca, netdev)
			if (ether_addr_equal(mca->addr, f->macaddr))
				goto bottom_of_search_loop;
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1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773
		netdev_for_each_uc_addr(uca, netdev)
			if (ether_addr_equal(uca->addr, f->macaddr))
				goto bottom_of_search_loop;

		for_each_dev_addr(netdev, ha)
			if (ether_addr_equal(ha->addr, f->macaddr))
				goto bottom_of_search_loop;

		/* f->macaddr wasn't found in uc, mc, or ha list so delete it */
		i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);

bottom_of_search_loop:
		continue;
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	}
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1775
	spin_unlock_bh(&vsi->mac_filter_list_lock);
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	/* check for other flag changes */
	if (vsi->current_netdev_flags != vsi->netdev->flags) {
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
		vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
	}
}

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/**
 * i40e_mac_filter_entry_clone - Clones a MAC filter entry
 * @src: source MAC filter entry to be clones
 *
 * Returns the pointer to newly cloned MAC filter entry or NULL
 * in case of error
 **/
static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
					struct i40e_mac_filter *src)
{
	struct i40e_mac_filter *f;

	f = kzalloc(sizeof(*f), GFP_ATOMIC);
	if (!f)
		return NULL;
	*f = *src;

	INIT_LIST_HEAD(&f->list);

	return f;
}

/**
 * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
 * @vsi: pointer to vsi struct
 * @from: Pointer to list which contains MAC filter entries - changes to
 *        those entries needs to be undone.
 *
 * MAC filter entries from list were slated to be removed from device.
 **/
static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
					 struct list_head *from)
{
	struct i40e_mac_filter *f, *ftmp;

	list_for_each_entry_safe(f, ftmp, from, list) {
		f->changed = true;
		/* Move the element back into MAC filter list*/
		list_move_tail(&f->list, &vsi->mac_filter_list);
	}
}

/**
 * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
 * @vsi: pointer to vsi struct
 *
 * MAC filter entries from list were slated to be added from device.
 **/
static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
{
	struct i40e_mac_filter *f, *ftmp;

	list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
		if (!f->changed && f->counter)
			f->changed = true;
	}
}

/**
 * i40e_cleanup_add_list - Deletes the element from add list and release
 *			memory
 * @add_list: Pointer to list which contains MAC filter entries
 **/
static void i40e_cleanup_add_list(struct list_head *add_list)
{
	struct i40e_mac_filter *f, *ftmp;

	list_for_each_entry_safe(f, ftmp, add_list, list) {
		list_del(&f->list);
		kfree(f);
	}
}

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/**
 * i40e_sync_vsi_filters - Update the VSI filter list to the HW
 * @vsi: ptr to the VSI
1860
 * @grab_rtnl: whether RTNL needs to be grabbed
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 *
 * Push any outstanding VSI filter changes through the AdminQ.
 *
 * Returns 0 or error value
 **/
1866
int i40e_sync_vsi_filters(struct i40e_vsi *vsi, bool grab_rtnl)
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{
K
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	struct list_head tmp_del_list, tmp_add_list;
	struct i40e_mac_filter *f, *ftmp, *fclone;
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1870 1871 1872 1873
	bool promisc_forced_on = false;
	bool add_happened = false;
	int filter_list_len = 0;
	u32 changed_flags = 0;
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1874
	bool err_cond = false;
1875
	i40e_status ret = 0;
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	struct i40e_pf *pf;
	int num_add = 0;
	int num_del = 0;
1879
	int aq_err = 0;
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	u16 cmd_flags;

	/* empty array typed pointers, kcalloc later */
	struct i40e_aqc_add_macvlan_element_data *add_list;
	struct i40e_aqc_remove_macvlan_element_data *del_list;

	while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
		usleep_range(1000, 2000);
	pf = vsi->back;

	if (vsi->netdev) {
		changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
		vsi->current_netdev_flags = vsi->netdev->flags;
	}

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	INIT_LIST_HEAD(&tmp_del_list);
	INIT_LIST_HEAD(&tmp_add_list);

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	if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
		vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;

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		spin_lock_bh(&vsi->mac_filter_list_lock);
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		list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
			if (!f->changed)
				continue;

			if (f->counter != 0)
				continue;
			f->changed = false;
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			/* Move the element into temporary del_list */
			list_move_tail(&f->list, &tmp_del_list);
		}

		list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
			if (!f->changed)
				continue;

			if (f->counter == 0)
				continue;
			f->changed = false;

			/* Clone MAC filter entry and add into temporary list */
			fclone = i40e_mac_filter_entry_clone(f);
			if (!fclone) {
				err_cond = true;
				break;
			}
			list_add_tail(&fclone->list, &tmp_add_list);
		}

		/* if failed to clone MAC filter entry - undo */
		if (err_cond) {
			i40e_undo_del_filter_entries(vsi, &tmp_del_list);
			i40e_undo_add_filter_entries(vsi);
		}
		spin_unlock_bh(&vsi->mac_filter_list_lock);

		if (err_cond)
			i40e_cleanup_add_list(&tmp_add_list);
	}

	/* Now process 'del_list' outside the lock */
	if (!list_empty(&tmp_del_list)) {
		filter_list_len = pf->hw.aq.asq_buf_size /
			    sizeof(struct i40e_aqc_remove_macvlan_element_data);
		del_list = kcalloc(filter_list_len,
			    sizeof(struct i40e_aqc_remove_macvlan_element_data),
			    GFP_KERNEL);
		if (!del_list) {
			i40e_cleanup_add_list(&tmp_add_list);

			/* Undo VSI's MAC filter entry element updates */
			spin_lock_bh(&vsi->mac_filter_list_lock);
			i40e_undo_del_filter_entries(vsi, &tmp_del_list);
			i40e_undo_add_filter_entries(vsi);
			spin_unlock_bh(&vsi->mac_filter_list_lock);
			return -ENOMEM;
		}

		list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
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			cmd_flags = 0;

			/* add to delete list */
1964
			ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
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			del_list[num_del].vlan_tag =
				cpu_to_le16((u16)(f->vlan ==
					    I40E_VLAN_ANY ? 0 : f->vlan));

			cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
			del_list[num_del].flags = cmd_flags;
			num_del++;

			/* flush a full buffer */
			if (num_del == filter_list_len) {
1975 1976 1977 1978
				ret = i40e_aq_remove_macvlan(&pf->hw,
						  vsi->seid, del_list, num_del,
						  NULL);
				aq_err = pf->hw.aq.asq_last_status;
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				num_del = 0;
				memset(del_list, 0, sizeof(*del_list));

1982
				if (ret && aq_err != I40E_AQ_RC_ENOENT)
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					dev_err(&pf->pdev->dev,
						"ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
						i40e_stat_str(&pf->hw, ret),
						i40e_aq_str(&pf->hw, aq_err));
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			}
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			/* Release memory for MAC filter entries which were
			 * synced up with HW.
			 */
			list_del(&f->list);
			kfree(f);
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		}
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		if (num_del) {
1996
			ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
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						     del_list, num_del, NULL);
1998
			aq_err = pf->hw.aq.asq_last_status;
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			num_del = 0;

2001
			if (ret && aq_err != I40E_AQ_RC_ENOENT)
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				dev_info(&pf->pdev->dev,
2003 2004 2005
					 "ignoring delete macvlan error, err %s aq_err %s\n",
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw, aq_err));
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		}

		kfree(del_list);
		del_list = NULL;
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	}

	if (!list_empty(&tmp_add_list)) {
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		/* do all the adds now */
		filter_list_len = pf->hw.aq.asq_buf_size /
			       sizeof(struct i40e_aqc_add_macvlan_element_data),
		add_list = kcalloc(filter_list_len,
			       sizeof(struct i40e_aqc_add_macvlan_element_data),
			       GFP_KERNEL);
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		if (!add_list) {
			/* Purge element from temporary lists */
			i40e_cleanup_add_list(&tmp_add_list);

			/* Undo add filter entries from VSI MAC filter list */
			spin_lock_bh(&vsi->mac_filter_list_lock);
			i40e_undo_add_filter_entries(vsi);
			spin_unlock_bh(&vsi->mac_filter_list_lock);
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			return -ENOMEM;
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		}
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		list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
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			add_happened = true;
			cmd_flags = 0;

			/* add to add array */
2037
			ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
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			add_list[num_add].vlan_tag =
				cpu_to_le16(
				 (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
			add_list[num_add].queue_number = 0;

			cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
			add_list[num_add].flags = cpu_to_le16(cmd_flags);
			num_add++;

			/* flush a full buffer */
			if (num_add == filter_list_len) {
2049 2050 2051 2052
				ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
							  add_list, num_add,
							  NULL);
				aq_err = pf->hw.aq.asq_last_status;
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				num_add = 0;

2055
				if (ret)
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					break;
				memset(add_list, 0, sizeof(*add_list));
			}
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			/* Entries from tmp_add_list were cloned from MAC
			 * filter list, hence clean those cloned entries
			 */
			list_del(&f->list);
			kfree(f);
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		}
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		if (num_add) {
2067 2068 2069
			ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
						  add_list, num_add, NULL);
			aq_err = pf->hw.aq.asq_last_status;
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			num_add = 0;
		}
		kfree(add_list);
		add_list = NULL;

2075
		if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
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			dev_info(&pf->pdev->dev,
2077 2078 2079
				 "add filter failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw, aq_err));
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			if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
			    !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
				      &vsi->state)) {
				promisc_forced_on = true;
				set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
					&vsi->state);
				dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
			}
		}
	}

	/* check for changes in promiscuous modes */
	if (changed_flags & IFF_ALLMULTI) {
		bool cur_multipromisc;
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		cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2096 2097 2098 2099 2100
		ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
							    vsi->seid,
							    cur_multipromisc,
							    NULL);
		if (ret)
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			dev_info(&pf->pdev->dev,
2102 2103 2104 2105
				 "set multi promisc failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
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	}
	if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
		bool cur_promisc;
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		cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
			       test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
					&vsi->state));
2113 2114 2115 2116 2117 2118 2119 2120
		if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
			/* set defport ON for Main VSI instead of true promisc
			 * this way we will get all unicast/multicast and VLAN
			 * promisc behavior but will not get VF or VMDq traffic
			 * replicated on the Main VSI.
			 */
			if (pf->cur_promisc != cur_promisc) {
				pf->cur_promisc = cur_promisc;
2121 2122 2123 2124 2125
				if (grab_rtnl)
					i40e_do_reset_safe(pf,
						BIT(__I40E_PF_RESET_REQUESTED));
				else
					i40e_do_reset(pf,
2126 2127 2128 2129 2130
						BIT(__I40E_PF_RESET_REQUESTED));
			}
		} else {
			ret = i40e_aq_set_vsi_unicast_promiscuous(
							  &vsi->back->hw,
2131 2132
							  vsi->seid,
							  cur_promisc, NULL);
2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145
			if (ret)
				dev_info(&pf->pdev->dev,
					 "set unicast promisc failed, err %d, aq_err %d\n",
					 ret, pf->hw.aq.asq_last_status);
			ret = i40e_aq_set_vsi_multicast_promiscuous(
							  &vsi->back->hw,
							  vsi->seid,
							  cur_promisc, NULL);
			if (ret)
				dev_info(&pf->pdev->dev,
					 "set multicast promisc failed, err %d, aq_err %d\n",
					 ret, pf->hw.aq.asq_last_status);
		}
2146 2147 2148 2149
		ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
						vsi->seid,
						cur_promisc, NULL);
		if (ret)
2150
			dev_info(&pf->pdev->dev,
2151 2152 2153 2154
				 "set brdcast promisc failed, err %s, aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
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	}

	clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
	return 0;
}

/**
 * i40e_sync_filters_subtask - Sync the VSI filter list with HW
 * @pf: board private structure
 **/
static void i40e_sync_filters_subtask(struct i40e_pf *pf)
{
	int v;

	if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
		return;
	pf->flags &= ~I40E_FLAG_FILTER_SYNC;

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	for (v = 0; v < pf->num_alloc_vsi; v++) {
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		if (pf->vsi[v] &&
		    (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
2176
			i40e_sync_vsi_filters(pf->vsi[v], true);
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	}
}

/**
 * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
 * @netdev: network interface device structure
 * @new_mtu: new value for maximum frame size
 *
 * Returns 0 on success, negative on failure
 **/
static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
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	int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
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	struct i40e_vsi *vsi = np->vsi;

	/* MTU < 68 is an error and causes problems on some kernels */
	if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
		return -EINVAL;

	netdev_info(netdev, "changing MTU from %d to %d\n",
		    netdev->mtu, new_mtu);
	netdev->mtu = new_mtu;
	if (netif_running(netdev))
		i40e_vsi_reinit_locked(vsi);

	return 0;
}

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Jacob Keller 已提交
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/**
 * i40e_ioctl - Access the hwtstamp interface
 * @netdev: network interface device structure
 * @ifr: interface request data
 * @cmd: ioctl command
 **/
int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;

	switch (cmd) {
	case SIOCGHWTSTAMP:
		return i40e_ptp_get_ts_config(pf, ifr);
	case SIOCSHWTSTAMP:
		return i40e_ptp_set_ts_config(pf, ifr);
	default:
		return -EOPNOTSUPP;
	}
}

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/**
 * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
 * @vsi: the vsi being adjusted
 **/
void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
{
	struct i40e_vsi_context ctxt;
	i40e_status ret;

	if ((vsi->info.valid_sections &
	     cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
	    ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
		return;  /* already enabled */

	vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
	vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
				    I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;

	ctxt.seid = vsi->seid;
2246
	ctxt.info = vsi->info;
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	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
2250 2251 2252 2253
			 "update vlan stripping failed, err %s aq_err %s\n",
			 i40e_stat_str(&vsi->back->hw, ret),
			 i40e_aq_str(&vsi->back->hw,
				     vsi->back->hw.aq.asq_last_status));
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	}
}

/**
 * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
 * @vsi: the vsi being adjusted
 **/
void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
{
	struct i40e_vsi_context ctxt;
	i40e_status ret;

	if ((vsi->info.valid_sections &
	     cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
	    ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
	     I40E_AQ_VSI_PVLAN_EMOD_MASK))
		return;  /* already disabled */

	vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
	vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
				    I40E_AQ_VSI_PVLAN_EMOD_NOTHING;

	ctxt.seid = vsi->seid;
2277
	ctxt.info = vsi->info;
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	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
2281 2282 2283 2284
			 "update vlan stripping failed, err %s aq_err %s\n",
			 i40e_stat_str(&vsi->back->hw, ret),
			 i40e_aq_str(&vsi->back->hw,
				     vsi->back->hw.aq.asq_last_status));
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	}
}

/**
 * i40e_vlan_rx_register - Setup or shutdown vlan offload
 * @netdev: network interface to be adjusted
 * @features: netdev features to test if VLAN offload is enabled or not
 **/
static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

	if (features & NETIF_F_HW_VLAN_CTAG_RX)
		i40e_vlan_stripping_enable(vsi);
	else
		i40e_vlan_stripping_disable(vsi);
}

/**
 * i40e_vsi_add_vlan - Add vsi membership for given vlan
 * @vsi: the vsi being configured
 * @vid: vlan id to be added (0 = untagged only , -1 = any)
 **/
int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
{
	struct i40e_mac_filter *f, *add_f;
	bool is_netdev, is_vf;

	is_vf = (vsi->type == I40E_VSI_SRIOV);
	is_netdev = !!(vsi->netdev);

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Kiran Patil 已提交
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	/* Locked once because all functions invoked below iterates list*/
	spin_lock_bh(&vsi->mac_filter_list_lock);

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	if (is_netdev) {
		add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
					is_vf, is_netdev);
		if (!add_f) {
			dev_info(&vsi->back->pdev->dev,
				 "Could not add vlan filter %d for %pM\n",
				 vid, vsi->netdev->dev_addr);
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Kiran Patil 已提交
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			spin_unlock_bh(&vsi->mac_filter_list_lock);
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			return -ENOMEM;
		}
	}

	list_for_each_entry(f, &vsi->mac_filter_list, list) {
		add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
		if (!add_f) {
			dev_info(&vsi->back->pdev->dev,
				 "Could not add vlan filter %d for %pM\n",
				 vid, f->macaddr);
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Kiran Patil 已提交
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			spin_unlock_bh(&vsi->mac_filter_list_lock);
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			return -ENOMEM;
		}
	}

	/* Now if we add a vlan tag, make sure to check if it is the first
	 * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
	 * with 0, so we now accept untagged and specified tagged traffic
	 * (and not any taged and untagged)
	 */
	if (vid > 0) {
		if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
						  I40E_VLAN_ANY,
						  is_vf, is_netdev)) {
			i40e_del_filter(vsi, vsi->netdev->dev_addr,
					I40E_VLAN_ANY, is_vf, is_netdev);
			add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
						is_vf, is_netdev);
			if (!add_f) {
				dev_info(&vsi->back->pdev->dev,
					 "Could not add filter 0 for %pM\n",
					 vsi->netdev->dev_addr);
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Kiran Patil 已提交
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				spin_unlock_bh(&vsi->mac_filter_list_lock);
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				return -ENOMEM;
			}
		}
2364
	}
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Jesse Brandeburg 已提交
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2366 2367
	/* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
	if (vid > 0 && !vsi->info.pvid) {
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Jesse Brandeburg 已提交
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		list_for_each_entry(f, &vsi->mac_filter_list, list) {
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Kiran Patil 已提交
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			if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
					      is_vf, is_netdev))
				continue;
			i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
					is_vf, is_netdev);
			add_f = i40e_add_filter(vsi, f->macaddr,
						0, is_vf, is_netdev);
			if (!add_f) {
				dev_info(&vsi->back->pdev->dev,
					 "Could not add filter 0 for %pM\n",
					f->macaddr);
				spin_unlock_bh(&vsi->mac_filter_list_lock);
				return -ENOMEM;
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			}
		}
	}

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Kiran Patil 已提交
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	/* Make sure to release before sync_vsi_filter because that
	 * function will lock/unlock as necessary
	 */
	spin_unlock_bh(&vsi->mac_filter_list_lock);

2391 2392 2393 2394
	if (test_bit(__I40E_DOWN, &vsi->back->state) ||
	    test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
		return 0;

2395
	return i40e_sync_vsi_filters(vsi, false);
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}

/**
 * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
 * @vsi: the vsi being configured
 * @vid: vlan id to be removed (0 = untagged only , -1 = any)
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 *
 * Return: 0 on success or negative otherwise
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 **/
int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
{
	struct net_device *netdev = vsi->netdev;
	struct i40e_mac_filter *f, *add_f;
	bool is_vf, is_netdev;
	int filter_count = 0;

	is_vf = (vsi->type == I40E_VSI_SRIOV);
	is_netdev = !!(netdev);

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	/* Locked once because all functions invoked below iterates list */
	spin_lock_bh(&vsi->mac_filter_list_lock);

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	if (is_netdev)
		i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);

	list_for_each_entry(f, &vsi->mac_filter_list, list)
		i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);

	/* go through all the filters for this VSI and if there is only
	 * vid == 0 it means there are no other filters, so vid 0 must
	 * be replaced with -1. This signifies that we should from now
	 * on accept any traffic (with any tag present, or untagged)
	 */
	list_for_each_entry(f, &vsi->mac_filter_list, list) {
		if (is_netdev) {
			if (f->vlan &&
			    ether_addr_equal(netdev->dev_addr, f->macaddr))
				filter_count++;
		}

		if (f->vlan)
			filter_count++;
	}

	if (!filter_count && is_netdev) {
		i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
		f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
				    is_vf, is_netdev);
		if (!f) {
			dev_info(&vsi->back->pdev->dev,
				 "Could not add filter %d for %pM\n",
				 I40E_VLAN_ANY, netdev->dev_addr);
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			spin_unlock_bh(&vsi->mac_filter_list_lock);
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			return -ENOMEM;
		}
	}

	if (!filter_count) {
		list_for_each_entry(f, &vsi->mac_filter_list, list) {
			i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
			add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
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						is_vf, is_netdev);
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			if (!add_f) {
				dev_info(&vsi->back->pdev->dev,
					 "Could not add filter %d for %pM\n",
					 I40E_VLAN_ANY, f->macaddr);
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				spin_unlock_bh(&vsi->mac_filter_list_lock);
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				return -ENOMEM;
			}
		}
	}

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	/* Make sure to release before sync_vsi_filter because that
	 * function with lock/unlock as necessary
	 */
	spin_unlock_bh(&vsi->mac_filter_list_lock);

2473 2474 2475 2476
	if (test_bit(__I40E_DOWN, &vsi->back->state) ||
	    test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
		return 0;

2477
	return i40e_sync_vsi_filters(vsi, false);
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}

/**
 * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
 * @netdev: network interface to be adjusted
 * @vid: vlan id to be added
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 *
 * net_device_ops implementation for adding vlan ids
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 **/
2487 2488 2489 2490
#ifdef I40E_FCOE
int i40e_vlan_rx_add_vid(struct net_device *netdev,
			 __always_unused __be16 proto, u16 vid)
#else
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static int i40e_vlan_rx_add_vid(struct net_device *netdev,
				__always_unused __be16 proto, u16 vid)
2493
#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
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	int ret = 0;
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	if (vid > 4095)
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		return -EINVAL;

	netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
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2504 2505 2506 2507 2508
	/* If the network stack called us with vid = 0 then
	 * it is asking to receive priority tagged packets with
	 * vlan id 0.  Our HW receives them by default when configured
	 * to receive untagged packets so there is no need to add an
	 * extra filter for vlan 0 tagged packets.
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	 */
2510 2511
	if (vid)
		ret = i40e_vsi_add_vlan(vsi, vid);
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	if (!ret && (vid < VLAN_N_VID))
		set_bit(vid, vsi->active_vlans);
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	return ret;
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}

/**
 * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
 * @netdev: network interface to be adjusted
 * @vid: vlan id to be removed
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 *
A
Akeem G Abodunrin 已提交
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 * net_device_ops implementation for removing vlan ids
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 **/
2526 2527 2528 2529
#ifdef I40E_FCOE
int i40e_vlan_rx_kill_vid(struct net_device *netdev,
			  __always_unused __be16 proto, u16 vid)
#else
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static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
				 __always_unused __be16 proto, u16 vid)
2532
#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

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	netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);

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	/* return code is ignored as there is nothing a user
	 * can do about failure to remove and a log message was
J
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	 * already printed from the other function
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	 */
	i40e_vsi_kill_vlan(vsi, vid);

	clear_bit(vid, vsi->active_vlans);
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	return 0;
}

/**
 * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
 * @vsi: the vsi being brought back up
 **/
static void i40e_restore_vlan(struct i40e_vsi *vsi)
{
	u16 vid;

	if (!vsi->netdev)
		return;

	i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);

	for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
		i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
				     vid);
}

/**
 * i40e_vsi_add_pvid - Add pvid for the VSI
 * @vsi: the vsi being adjusted
 * @vid: the vlan id to set as a PVID
 **/
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int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
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{
	struct i40e_vsi_context ctxt;
2576
	i40e_status ret;
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	vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
	vsi->info.pvid = cpu_to_le16(vid);
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	vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
				    I40E_AQ_VSI_PVLAN_INSERT_PVID |
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				    I40E_AQ_VSI_PVLAN_EMOD_STR;
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	ctxt.seid = vsi->seid;
2585
	ctxt.info = vsi->info;
2586 2587
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
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		dev_info(&vsi->back->pdev->dev,
2589 2590 2591 2592
			 "add pvid failed, err %s aq_err %s\n",
			 i40e_stat_str(&vsi->back->hw, ret),
			 i40e_aq_str(&vsi->back->hw,
				     vsi->back->hw.aq.asq_last_status));
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		return -ENOENT;
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	}

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	return 0;
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}

/**
 * i40e_vsi_remove_pvid - Remove the pvid from the VSI
 * @vsi: the vsi being adjusted
 *
 * Just use the vlan_rx_register() service to put it back to normal
 **/
void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
{
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	i40e_vlan_stripping_disable(vsi);

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	vsi->info.pvid = 0;
}

/**
 * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
 * @vsi: ptr to the VSI
 *
 * If this function returns with an error, then it's possible one or
 * more of the rings is populated (while the rest are not).  It is the
 * callers duty to clean those orphaned rings.
 *
 * Return 0 on success, negative on failure
 **/
static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
{
	int i, err = 0;

	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2627
		err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
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	return err;
}

/**
 * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
 * @vsi: ptr to the VSI
 *
 * Free VSI's transmit software resources
 **/
static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
{
	int i;

2642 2643 2644
	if (!vsi->tx_rings)
		return;

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	for (i = 0; i < vsi->num_queue_pairs; i++)
2646
		if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2647
			i40e_free_tx_resources(vsi->tx_rings[i]);
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}

/**
 * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
 * @vsi: ptr to the VSI
 *
 * If this function returns with an error, then it's possible one or
 * more of the rings is populated (while the rest are not).  It is the
 * callers duty to clean those orphaned rings.
 *
 * Return 0 on success, negative on failure
 **/
static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
{
	int i, err = 0;

	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2665
		err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2666 2667 2668
#ifdef I40E_FCOE
	i40e_fcoe_setup_ddp_resources(vsi);
#endif
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	return err;
}

/**
 * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
 * @vsi: ptr to the VSI
 *
 * Free all receive software resources
 **/
static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
{
	int i;

2682 2683 2684
	if (!vsi->rx_rings)
		return;

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	for (i = 0; i < vsi->num_queue_pairs; i++)
2686
		if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2687
			i40e_free_rx_resources(vsi->rx_rings[i]);
2688 2689 2690
#ifdef I40E_FCOE
	i40e_fcoe_free_ddp_resources(vsi);
#endif
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}

2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704
/**
 * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
 * @ring: The Tx ring to configure
 *
 * This enables/disables XPS for a given Tx descriptor ring
 * based on the TCs enabled for the VSI that ring belongs to.
 **/
static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
{
	struct i40e_vsi *vsi = ring->vsi;
	cpumask_var_t mask;

2705 2706 2707 2708 2709 2710
	if (!ring->q_vector || !ring->netdev)
		return;

	/* Single TC mode enable XPS */
	if (vsi->tc_config.numtc <= 1) {
		if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2711 2712 2713
			netif_set_xps_queue(ring->netdev,
					    &ring->q_vector->affinity_mask,
					    ring->queue_index);
2714 2715 2716 2717 2718
	} else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
		/* Disable XPS to allow selection based on TC */
		bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
		netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
		free_cpumask_var(mask);
2719 2720 2721
	}
}

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/**
 * i40e_configure_tx_ring - Configure a transmit ring context and rest
 * @ring: The Tx ring to configure
 *
 * Configure the Tx descriptor ring in the HMC context.
 **/
static int i40e_configure_tx_ring(struct i40e_ring *ring)
{
	struct i40e_vsi *vsi = ring->vsi;
	u16 pf_q = vsi->base_queue + ring->queue_index;
	struct i40e_hw *hw = &vsi->back->hw;
	struct i40e_hmc_obj_txq tx_ctx;
	i40e_status err = 0;
	u32 qtx_ctl = 0;

	/* some ATR related tx ring init */
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	if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
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		ring->atr_sample_rate = vsi->back->atr_sample_rate;
		ring->atr_count = 0;
	} else {
		ring->atr_sample_rate = 0;
	}

2745 2746
	/* configure XPS */
	i40e_config_xps_tx_ring(ring);
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	/* clear the context structure first */
	memset(&tx_ctx, 0, sizeof(tx_ctx));

	tx_ctx.new_context = 1;
	tx_ctx.base = (ring->dma / 128);
	tx_ctx.qlen = ring->count;
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	tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
					       I40E_FLAG_FD_ATR_ENABLED));
2756 2757 2758
#ifdef I40E_FCOE
	tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
#endif
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	tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2760 2761 2762 2763 2764
	/* FDIR VSI tx ring can still use RS bit and writebacks */
	if (vsi->type != I40E_VSI_FDIR)
		tx_ctx.head_wb_ena = 1;
	tx_ctx.head_wb_addr = ring->dma +
			      (ring->count * sizeof(struct i40e_tx_desc));
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	/* As part of VSI creation/update, FW allocates certain
	 * Tx arbitration queue sets for each TC enabled for
	 * the VSI. The FW returns the handles to these queue
	 * sets as part of the response buffer to Add VSI,
	 * Update VSI, etc. AQ commands. It is expected that
	 * these queue set handles be associated with the Tx
	 * queues by the driver as part of the TX queue context
	 * initialization. This has to be done regardless of
	 * DCB as by default everything is mapped to TC0.
	 */
	tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
	tx_ctx.rdylist_act = 0;

	/* clear the context in the HMC */
	err = i40e_clear_lan_tx_queue_context(hw, pf_q);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

	/* set the context in the HMC */
	err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

	/* Now associate this queue with this PCI function */
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	if (vsi->type == I40E_VSI_VMDQ2) {
2799
		qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
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		qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
			   I40E_QTX_CTL_VFVM_INDX_MASK;
	} else {
2803
		qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
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	}

2806 2807
	qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
		    I40E_QTX_CTL_PF_INDX_MASK);
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	wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
	i40e_flush(hw);

	/* cache tail off for easier writes later */
	ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);

	return 0;
}

/**
 * i40e_configure_rx_ring - Configure a receive ring context
 * @ring: The Rx ring to configure
 *
 * Configure the Rx descriptor ring in the HMC context.
 **/
static int i40e_configure_rx_ring(struct i40e_ring *ring)
{
	struct i40e_vsi *vsi = ring->vsi;
	u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
	u16 pf_q = vsi->base_queue + ring->queue_index;
	struct i40e_hw *hw = &vsi->back->hw;
	struct i40e_hmc_obj_rxq rx_ctx;
	i40e_status err = 0;

	ring->state = 0;

	/* clear the context structure first */
	memset(&rx_ctx, 0, sizeof(rx_ctx));

	ring->rx_buf_len = vsi->rx_buf_len;
	ring->rx_hdr_len = vsi->rx_hdr_len;

	rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
	rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;

	rx_ctx.base = (ring->dma / 128);
	rx_ctx.qlen = ring->count;

	if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
		set_ring_16byte_desc_enabled(ring);
		rx_ctx.dsize = 0;
	} else {
		rx_ctx.dsize = 1;
	}

	rx_ctx.dtype = vsi->dtype;
	if (vsi->dtype) {
		set_ring_ps_enabled(ring);
		rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
				  I40E_RX_SPLIT_IP      |
				  I40E_RX_SPLIT_TCP_UDP |
				  I40E_RX_SPLIT_SCTP;
	} else {
		rx_ctx.hsplit_0 = 0;
	}

	rx_ctx.rxmax = min_t(u16, vsi->max_frame,
				  (chain_len * ring->rx_buf_len));
2866 2867 2868 2869
	if (hw->revision_id == 0)
		rx_ctx.lrxqthresh = 0;
	else
		rx_ctx.lrxqthresh = 2;
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	rx_ctx.crcstrip = 1;
	rx_ctx.l2tsel = 1;
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	/* this controls whether VLAN is stripped from inner headers */
	rx_ctx.showiv = 0;
2874 2875 2876
#ifdef I40E_FCOE
	rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
#endif
2877 2878
	/* set the prefena field to 1 because the manual says to */
	rx_ctx.prefena = 1;
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2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901

	/* clear the context in the HMC */
	err = i40e_clear_lan_rx_queue_context(hw, pf_q);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

	/* set the context in the HMC */
	err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
	if (err) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
			 ring->queue_index, pf_q, err);
		return -ENOMEM;
	}

	/* cache tail for quicker writes, and clear the reg before use */
	ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
	writel(0, ring->tail);

2902 2903 2904 2905 2906 2907
	if (ring_is_ps_enabled(ring)) {
		i40e_alloc_rx_headers(ring);
		i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
	} else {
		i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
	}
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2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922

	return 0;
}

/**
 * i40e_vsi_configure_tx - Configure the VSI for Tx
 * @vsi: VSI structure describing this set of rings and resources
 *
 * Configure the Tx VSI for operation.
 **/
static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
{
	int err = 0;
	u16 i;

2923 2924
	for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
		err = i40e_configure_tx_ring(vsi->tx_rings[i]);
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2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965

	return err;
}

/**
 * i40e_vsi_configure_rx - Configure the VSI for Rx
 * @vsi: the VSI being configured
 *
 * Configure the Rx VSI for operation.
 **/
static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
{
	int err = 0;
	u16 i;

	if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
		vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
			       + ETH_FCS_LEN + VLAN_HLEN;
	else
		vsi->max_frame = I40E_RXBUFFER_2048;

	/* figure out correct receive buffer length */
	switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
				    I40E_FLAG_RX_PS_ENABLED)) {
	case I40E_FLAG_RX_1BUF_ENABLED:
		vsi->rx_hdr_len = 0;
		vsi->rx_buf_len = vsi->max_frame;
		vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
		break;
	case I40E_FLAG_RX_PS_ENABLED:
		vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
		vsi->rx_buf_len = I40E_RXBUFFER_2048;
		vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
		break;
	default:
		vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
		vsi->rx_buf_len = I40E_RXBUFFER_2048;
		vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
		break;
	}

2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976
#ifdef I40E_FCOE
	/* setup rx buffer for FCoE */
	if ((vsi->type == I40E_VSI_FCOE) &&
	    (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
		vsi->rx_hdr_len = 0;
		vsi->rx_buf_len = I40E_RXBUFFER_3072;
		vsi->max_frame = I40E_RXBUFFER_3072;
		vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
	}

#endif /* I40E_FCOE */
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2977 2978
	/* round up for the chip's needs */
	vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2979
				BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
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2980
	vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2981
				BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
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2982 2983 2984

	/* set up individual rings */
	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2985
		err = i40e_configure_rx_ring(vsi->rx_rings[i]);
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	return err;
}

/**
 * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
 * @vsi: ptr to the VSI
 **/
static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
{
2996
	struct i40e_ring *tx_ring, *rx_ring;
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	u16 qoffset, qcount;
	int i, n;

3000 3001 3002 3003 3004 3005 3006 3007 3008
	if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
		/* Reset the TC information */
		for (i = 0; i < vsi->num_queue_pairs; i++) {
			rx_ring = vsi->rx_rings[i];
			tx_ring = vsi->tx_rings[i];
			rx_ring->dcb_tc = 0;
			tx_ring->dcb_tc = 0;
		}
	}
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	for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3011
		if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
J
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3012 3013 3014 3015 3016
			continue;

		qoffset = vsi->tc_config.tc_info[n].qoffset;
		qcount = vsi->tc_config.tc_info[n].qcount;
		for (i = qoffset; i < (qoffset + qcount); i++) {
3017 3018
			rx_ring = vsi->rx_rings[i];
			tx_ring = vsi->tx_rings[i];
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3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034
			rx_ring->dcb_tc = n;
			tx_ring->dcb_tc = n;
		}
	}
}

/**
 * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
 * @vsi: ptr to the VSI
 **/
static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
{
	if (vsi->netdev)
		i40e_set_rx_mode(vsi->netdev);
}

3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047
/**
 * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
 * @vsi: Pointer to the targeted VSI
 *
 * This function replays the hlist on the hw where all the SB Flow Director
 * filters were saved.
 **/
static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
{
	struct i40e_fdir_filter *filter;
	struct i40e_pf *pf = vsi->back;
	struct hlist_node *node;

3048 3049 3050
	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
		return;

3051 3052 3053 3054 3055 3056
	hlist_for_each_entry_safe(filter, node,
				  &pf->fdir_filter_list, fdir_node) {
		i40e_add_del_fdir(vsi, filter, true);
	}
}

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3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092
/**
 * i40e_vsi_configure - Set up the VSI for action
 * @vsi: the VSI being configured
 **/
static int i40e_vsi_configure(struct i40e_vsi *vsi)
{
	int err;

	i40e_set_vsi_rx_mode(vsi);
	i40e_restore_vlan(vsi);
	i40e_vsi_config_dcb_rings(vsi);
	err = i40e_vsi_configure_tx(vsi);
	if (!err)
		err = i40e_vsi_configure_rx(vsi);

	return err;
}

/**
 * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
 * @vsi: the VSI being configured
 **/
static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u16 vector;
	int i, q;
	u32 qp;

	/* The interrupt indexing is offset by 1 in the PFINT_ITRn
	 * and PFINT_LNKLSTn registers, e.g.:
	 *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
	 */
	qp = vsi->base_queue;
	vector = vsi->base_vector;
3093
	for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3094 3095
		struct i40e_q_vector *q_vector = vsi->q_vectors[i];

3096
		q_vector->itr_countdown = ITR_COUNTDOWN_START;
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3097 3098 3099 3100 3101 3102 3103 3104
		q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
		q_vector->rx.latency_range = I40E_LOW_LATENCY;
		wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
		     q_vector->rx.itr);
		q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
		q_vector->tx.latency_range = I40E_LOW_LATENCY;
		wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
		     q_vector->tx.itr);
3105 3106
		wr32(hw, I40E_PFINT_RATEN(vector - 1),
		     INTRL_USEC_TO_REG(vsi->int_rate_limit));
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3107 3108 3109 3110

		/* Linked list for the queuepairs assigned to this vector */
		wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
		for (q = 0; q < q_vector->num_ringpairs; q++) {
3111 3112
			u32 val;

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3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145
			val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
			      (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
			      (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
			      (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
			      (I40E_QUEUE_TYPE_TX
				      << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);

			wr32(hw, I40E_QINT_RQCTL(qp), val);

			val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
			      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
			      (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
			      ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
			      (I40E_QUEUE_TYPE_RX
				      << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);

			/* Terminate the linked list */
			if (q == (q_vector->num_ringpairs - 1))
				val |= (I40E_QUEUE_END_OF_LIST
					   << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);

			wr32(hw, I40E_QINT_TQCTL(qp), val);
			qp++;
		}
	}

	i40e_flush(hw);
}

/**
 * i40e_enable_misc_int_causes - enable the non-queue interrupts
 * @hw: ptr to the hardware info
 **/
3146
static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
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Jesse Brandeburg 已提交
3147
{
3148
	struct i40e_hw *hw = &pf->hw;
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3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163
	u32 val;

	/* clear things first */
	wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
	rd32(hw, I40E_PFINT_ICR0);         /* read to clear */

	val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
	      I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
	      I40E_PFINT_ICR0_ENA_GRST_MASK          |
	      I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
	      I40E_PFINT_ICR0_ENA_GPIO_MASK          |
	      I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
	      I40E_PFINT_ICR0_ENA_VFLR_MASK          |
	      I40E_PFINT_ICR0_ENA_ADMINQ_MASK;

3164 3165 3166
	if (pf->flags & I40E_FLAG_IWARP_ENABLED)
		val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;

3167 3168 3169
	if (pf->flags & I40E_FLAG_PTP)
		val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;

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3170 3171 3172
	wr32(hw, I40E_PFINT_ICR0_ENA, val);

	/* SW_ITR_IDX = 0, but don't change INTENA */
3173 3174
	wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
					I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
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3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185

	/* OTHER_ITR_IDX = 0 */
	wr32(hw, I40E_PFINT_STAT_CTL0, 0);
}

/**
 * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
 * @vsi: the VSI being configured
 **/
static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
{
3186
	struct i40e_q_vector *q_vector = vsi->q_vectors[0];
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Jesse Brandeburg 已提交
3187 3188 3189 3190 3191
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u32 val;

	/* set the ITR configuration */
3192
	q_vector->itr_countdown = ITR_COUNTDOWN_START;
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Jesse Brandeburg 已提交
3193 3194 3195 3196 3197 3198 3199
	q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
	q_vector->rx.latency_range = I40E_LOW_LATENCY;
	wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
	q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
	q_vector->tx.latency_range = I40E_LOW_LATENCY;
	wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);

3200
	i40e_enable_misc_int_causes(pf);
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3201 3202 3203 3204

	/* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
	wr32(hw, I40E_PFINT_LNKLST0, 0);

3205
	/* Associate the queue pair to the vector and enable the queue int */
J
Jesse Brandeburg 已提交
3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219
	val = I40E_QINT_RQCTL_CAUSE_ENA_MASK		      |
	      (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
	      (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);

	wr32(hw, I40E_QINT_RQCTL(0), val);

	val = I40E_QINT_TQCTL_CAUSE_ENA_MASK		      |
	      (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
	      (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);

	wr32(hw, I40E_QINT_TQCTL(0), val);
	i40e_flush(hw);
}

3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232
/**
 * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
 * @pf: board private structure
 **/
void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;

	wr32(hw, I40E_PFINT_DYN_CTL0,
	     I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
	i40e_flush(hw);
}

J
Jesse Brandeburg 已提交
3233 3234 3235 3236
/**
 * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
 * @pf: board private structure
 **/
3237
void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249
{
	struct i40e_hw *hw = &pf->hw;
	u32 val;

	val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
	      I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
	      (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);

	wr32(hw, I40E_PFINT_DYN_CTL0, val);
	i40e_flush(hw);
}

3250 3251 3252
/**
 * i40e_irq_dynamic_disable - Disable default interrupt generation settings
 * @vsi: pointer to a vsi
G
Greg Rose 已提交
3253
 * @vector: disable a particular Hw Interrupt vector
3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265
 **/
void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u32 val;

	val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
	wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
	i40e_flush(hw);
}

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3266 3267 3268 3269 3270 3271 3272 3273 3274
/**
 * i40e_msix_clean_rings - MSIX mode Interrupt Handler
 * @irq: interrupt number
 * @data: pointer to a q_vector
 **/
static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
{
	struct i40e_q_vector *q_vector = data;

3275
	if (!q_vector->tx.ring && !q_vector->rx.ring)
J
Jesse Brandeburg 已提交
3276 3277
		return IRQ_HANDLED;

3278
	napi_schedule_irqoff(&q_vector->napi);
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3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299

	return IRQ_HANDLED;
}

/**
 * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
 * @vsi: the VSI being configured
 * @basename: name for the vector
 *
 * Allocates MSI-X vectors and requests interrupts from the kernel.
 **/
static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
{
	int q_vectors = vsi->num_q_vectors;
	struct i40e_pf *pf = vsi->back;
	int base = vsi->base_vector;
	int rx_int_idx = 0;
	int tx_int_idx = 0;
	int vector, err;

	for (vector = 0; vector < q_vectors; vector++) {
3300
		struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
J
Jesse Brandeburg 已提交
3301

3302
		if (q_vector->tx.ring && q_vector->rx.ring) {
J
Jesse Brandeburg 已提交
3303 3304 3305
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "TxRx", rx_int_idx++);
			tx_int_idx++;
3306
		} else if (q_vector->rx.ring) {
J
Jesse Brandeburg 已提交
3307 3308
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "rx", rx_int_idx++);
3309
		} else if (q_vector->tx.ring) {
J
Jesse Brandeburg 已提交
3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "tx", tx_int_idx++);
		} else {
			/* skip this unused q_vector */
			continue;
		}
		err = request_irq(pf->msix_entries[base + vector].vector,
				  vsi->irq_handler,
				  0,
				  q_vector->name,
				  q_vector);
		if (err) {
			dev_info(&pf->pdev->dev,
S
Shannon Nelson 已提交
3323
				 "MSIX request_irq failed, error: %d\n", err);
J
Jesse Brandeburg 已提交
3324 3325 3326 3327 3328 3329 3330
			goto free_queue_irqs;
		}
		/* assign the mask for this irq */
		irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
				      &q_vector->affinity_mask);
	}

3331
	vsi->irqs_ready = true;
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Jesse Brandeburg 已提交
3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356
	return 0;

free_queue_irqs:
	while (vector) {
		vector--;
		irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
				      NULL);
		free_irq(pf->msix_entries[base + vector].vector,
			 &(vsi->q_vectors[vector]));
	}
	return err;
}

/**
 * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
 * @vsi: the VSI being un-configured
 **/
static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int base = vsi->base_vector;
	int i;

	for (i = 0; i < vsi->num_queue_pairs; i++) {
3357 3358
		wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
		wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
J
Jesse Brandeburg 已提交
3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387
	}

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		for (i = vsi->base_vector;
		     i < (vsi->num_q_vectors + vsi->base_vector); i++)
			wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);

		i40e_flush(hw);
		for (i = 0; i < vsi->num_q_vectors; i++)
			synchronize_irq(pf->msix_entries[i + base].vector);
	} else {
		/* Legacy and MSI mode - this stops all interrupt handling */
		wr32(hw, I40E_PFINT_ICR0_ENA, 0);
		wr32(hw, I40E_PFINT_DYN_CTL0, 0);
		i40e_flush(hw);
		synchronize_irq(pf->pdev->irq);
	}
}

/**
 * i40e_vsi_enable_irq - Enable IRQ for the given VSI
 * @vsi: the VSI being configured
 **/
static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	int i;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3388
		for (i = 0; i < vsi->num_q_vectors; i++)
J
Jesse Brandeburg 已提交
3389 3390 3391 3392 3393
			i40e_irq_dynamic_enable(vsi, i);
	} else {
		i40e_irq_dynamic_enable_icr0(pf);
	}

3394
	i40e_flush(&pf->hw);
J
Jesse Brandeburg 已提交
3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421
	return 0;
}

/**
 * i40e_stop_misc_vector - Stop the vector that handles non-queue events
 * @pf: board private structure
 **/
static void i40e_stop_misc_vector(struct i40e_pf *pf)
{
	/* Disable ICR 0 */
	wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
	i40e_flush(&pf->hw);
}

/**
 * i40e_intr - MSI/Legacy and non-queue interrupt handler
 * @irq: interrupt number
 * @data: pointer to a q_vector
 *
 * This is the handler used for all MSI/Legacy interrupts, and deals
 * with both queue and non-queue interrupts.  This is also used in
 * MSIX mode to handle the non-queue interrupts.
 **/
static irqreturn_t i40e_intr(int irq, void *data)
{
	struct i40e_pf *pf = (struct i40e_pf *)data;
	struct i40e_hw *hw = &pf->hw;
3422
	irqreturn_t ret = IRQ_NONE;
J
Jesse Brandeburg 已提交
3423 3424 3425 3426
	u32 icr0, icr0_remaining;
	u32 val, ena_mask;

	icr0 = rd32(hw, I40E_PFINT_ICR0);
3427
	ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
J
Jesse Brandeburg 已提交
3428

3429 3430
	/* if sharing a legacy IRQ, we might get called w/o an intr pending */
	if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3431
		goto enable_intr;
J
Jesse Brandeburg 已提交
3432

S
Shannon Nelson 已提交
3433 3434 3435 3436 3437
	/* if interrupt but no bits showing, must be SWINT */
	if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
	    (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
		pf->sw_int_count++;

3438 3439 3440 3441 3442 3443 3444
	if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
	    (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
		ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
		icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
		dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
	}

J
Jesse Brandeburg 已提交
3445 3446
	/* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
	if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3447 3448
		struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
		struct i40e_q_vector *q_vector = vsi->q_vectors[0];
J
Jesse Brandeburg 已提交
3449 3450 3451

		/* temporarily disable queue cause for NAPI processing */
		u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
J
Jesse Brandeburg 已提交
3452

J
Jesse Brandeburg 已提交
3453 3454 3455 3456 3457 3458 3459 3460
		qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
		wr32(hw, I40E_QINT_RQCTL(0), qval);

		qval = rd32(hw, I40E_QINT_TQCTL(0));
		qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
		wr32(hw, I40E_QINT_TQCTL(0), qval);

		if (!test_bit(__I40E_DOWN, &pf->state))
3461
			napi_schedule_irqoff(&q_vector->napi);
J
Jesse Brandeburg 已提交
3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485
	}

	if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
		ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
		set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
	}

	if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
		ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
		set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
	}

	if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
		ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
		set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
	}

	if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
		if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
			set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
		ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
		val = rd32(hw, I40E_GLGEN_RSTAT);
		val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
		       >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3486
		if (val == I40E_RESET_CORER) {
J
Jesse Brandeburg 已提交
3487
			pf->corer_count++;
3488
		} else if (val == I40E_RESET_GLOBR) {
J
Jesse Brandeburg 已提交
3489
			pf->globr_count++;
3490
		} else if (val == I40E_RESET_EMPR) {
J
Jesse Brandeburg 已提交
3491
			pf->empr_count++;
3492
			set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3493
		}
J
Jesse Brandeburg 已提交
3494 3495
	}

3496 3497 3498
	if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
		icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
		dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3499 3500 3501
		dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
			 rd32(hw, I40E_PFHMC_ERRORINFO),
			 rd32(hw, I40E_PFHMC_ERRORDATA));
3502 3503
	}

J
Jacob Keller 已提交
3504 3505 3506 3507
	if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
		u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);

		if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3508
			icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
J
Jacob Keller 已提交
3509 3510 3511 3512
			i40e_ptp_tx_hwtstamp(pf);
		}
	}

J
Jesse Brandeburg 已提交
3513 3514 3515 3516 3517 3518 3519 3520
	/* If a critical error is pending we have no choice but to reset the
	 * device.
	 * Report and mask out any remaining unexpected interrupts.
	 */
	icr0_remaining = icr0 & ena_mask;
	if (icr0_remaining) {
		dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
			 icr0_remaining);
3521
		if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
J
Jesse Brandeburg 已提交
3522
		    (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3523
		    (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3524 3525 3526
			dev_info(&pf->pdev->dev, "device will be reset\n");
			set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
			i40e_service_event_schedule(pf);
J
Jesse Brandeburg 已提交
3527 3528 3529
		}
		ena_mask &= ~icr0_remaining;
	}
3530
	ret = IRQ_HANDLED;
J
Jesse Brandeburg 已提交
3531

3532
enable_intr:
J
Jesse Brandeburg 已提交
3533 3534 3535 3536 3537 3538 3539
	/* re-enable interrupt causes */
	wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
	if (!test_bit(__I40E_DOWN, &pf->state)) {
		i40e_service_event_schedule(pf);
		i40e_irq_dynamic_enable_icr0(pf);
	}

3540
	return ret;
J
Jesse Brandeburg 已提交
3541 3542
}

3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578
/**
 * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
 * @tx_ring:  tx ring to clean
 * @budget:   how many cleans we're allowed
 *
 * Returns true if there's any budget left (e.g. the clean is finished)
 **/
static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
{
	struct i40e_vsi *vsi = tx_ring->vsi;
	u16 i = tx_ring->next_to_clean;
	struct i40e_tx_buffer *tx_buf;
	struct i40e_tx_desc *tx_desc;

	tx_buf = &tx_ring->tx_bi[i];
	tx_desc = I40E_TX_DESC(tx_ring, i);
	i -= tx_ring->count;

	do {
		struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;

		/* if next_to_watch is not set then there is no work pending */
		if (!eop_desc)
			break;

		/* prevent any other reads prior to eop_desc */
		read_barrier_depends();

		/* if the descriptor isn't done, no work yet to do */
		if (!(eop_desc->cmd_type_offset_bsz &
		      cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
			break;

		/* clear next_to_watch to prevent false hangs */
		tx_buf->next_to_watch = NULL;

3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589
		tx_desc->buffer_addr = 0;
		tx_desc->cmd_type_offset_bsz = 0;
		/* move past filter desc */
		tx_buf++;
		tx_desc++;
		i++;
		if (unlikely(!i)) {
			i -= tx_ring->count;
			tx_buf = tx_ring->tx_bi;
			tx_desc = I40E_TX_DESC(tx_ring, 0);
		}
3590 3591 3592 3593 3594
		/* unmap skb header data */
		dma_unmap_single(tx_ring->dev,
				 dma_unmap_addr(tx_buf, dma),
				 dma_unmap_len(tx_buf, len),
				 DMA_TO_DEVICE);
3595 3596
		if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
			kfree(tx_buf->raw_buf);
3597

3598 3599 3600
		tx_buf->raw_buf = NULL;
		tx_buf->tx_flags = 0;
		tx_buf->next_to_watch = NULL;
3601
		dma_unmap_len_set(tx_buf, len, 0);
3602 3603
		tx_desc->buffer_addr = 0;
		tx_desc->cmd_type_offset_bsz = 0;
3604

3605
		/* move us past the eop_desc for start of next FD desc */
3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621
		tx_buf++;
		tx_desc++;
		i++;
		if (unlikely(!i)) {
			i -= tx_ring->count;
			tx_buf = tx_ring->tx_bi;
			tx_desc = I40E_TX_DESC(tx_ring, 0);
		}

		/* update budget accounting */
		budget--;
	} while (likely(budget));

	i += tx_ring->count;
	tx_ring->next_to_clean = i;

J
Jesse Brandeburg 已提交
3622
	if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3623
		i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
J
Jesse Brandeburg 已提交
3624

3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646
	return budget > 0;
}

/**
 * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
 * @irq: interrupt number
 * @data: pointer to a q_vector
 **/
static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
{
	struct i40e_q_vector *q_vector = data;
	struct i40e_vsi *vsi;

	if (!q_vector->tx.ring)
		return IRQ_HANDLED;

	vsi = q_vector->tx.ring->vsi;
	i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);

	return IRQ_HANDLED;
}

J
Jesse Brandeburg 已提交
3647
/**
3648
 * i40e_map_vector_to_qp - Assigns the queue pair to the vector
J
Jesse Brandeburg 已提交
3649 3650
 * @vsi: the VSI being configured
 * @v_idx: vector index
3651
 * @qp_idx: queue pair index
J
Jesse Brandeburg 已提交
3652
 **/
3653
static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
J
Jesse Brandeburg 已提交
3654
{
3655
	struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3656 3657
	struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
	struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
J
Jesse Brandeburg 已提交
3658 3659

	tx_ring->q_vector = q_vector;
3660 3661
	tx_ring->next = q_vector->tx.ring;
	q_vector->tx.ring = tx_ring;
J
Jesse Brandeburg 已提交
3662
	q_vector->tx.count++;
3663 3664 3665 3666 3667

	rx_ring->q_vector = q_vector;
	rx_ring->next = q_vector->rx.ring;
	q_vector->rx.ring = rx_ring;
	q_vector->rx.count++;
J
Jesse Brandeburg 已提交
3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682
}

/**
 * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
 * @vsi: the VSI being configured
 *
 * This function maps descriptor rings to the queue-specific vectors
 * we were allotted through the MSI-X enabling code.  Ideally, we'd have
 * one vector per queue pair, but on a constrained vector budget, we
 * group the queue pairs as "efficiently" as possible.
 **/
static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
{
	int qp_remaining = vsi->num_queue_pairs;
	int q_vectors = vsi->num_q_vectors;
3683
	int num_ringpairs;
J
Jesse Brandeburg 已提交
3684 3685 3686 3687 3688
	int v_start = 0;
	int qp_idx = 0;

	/* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
	 * group them so there are multiple queues per vector.
3689 3690 3691 3692
	 * It is also important to go through all the vectors available to be
	 * sure that if we don't use all the vectors, that the remaining vectors
	 * are cleared. This is especially important when decreasing the
	 * number of queues in use.
J
Jesse Brandeburg 已提交
3693
	 */
3694
	for (; v_start < q_vectors; v_start++) {
3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706
		struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];

		num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);

		q_vector->num_ringpairs = num_ringpairs;

		q_vector->rx.count = 0;
		q_vector->tx.count = 0;
		q_vector->rx.ring = NULL;
		q_vector->tx.ring = NULL;

		while (num_ringpairs--) {
3707
			i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3708 3709
			qp_idx++;
			qp_remaining--;
J
Jesse Brandeburg 已提交
3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727
		}
	}
}

/**
 * i40e_vsi_request_irq - Request IRQ from the OS
 * @vsi: the VSI being configured
 * @basename: name for the vector
 **/
static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
{
	struct i40e_pf *pf = vsi->back;
	int err;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		err = i40e_vsi_request_irq_msix(vsi, basename);
	else if (pf->flags & I40E_FLAG_MSI_ENABLED)
		err = request_irq(pf->pdev->irq, i40e_intr, 0,
3728
				  pf->int_name, pf);
J
Jesse Brandeburg 已提交
3729 3730
	else
		err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3731
				  pf->int_name, pf);
J
Jesse Brandeburg 已提交
3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746

	if (err)
		dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);

	return err;
}

#ifdef CONFIG_NET_POLL_CONTROLLER
/**
 * i40e_netpoll - A Polling 'interrupt'handler
 * @netdev: network interface device structure
 *
 * This is used by netconsole to send skbs without having to re-enable
 * interrupts.  It's not called while the normal interrupt routine is executing.
 **/
3747 3748 3749
#ifdef I40E_FCOE
void i40e_netpoll(struct net_device *netdev)
#else
J
Jesse Brandeburg 已提交
3750
static void i40e_netpoll(struct net_device *netdev)
3751
#endif
J
Jesse Brandeburg 已提交
3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int i;

	/* if interface is down do nothing */
	if (test_bit(__I40E_DOWN, &vsi->state))
		return;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		for (i = 0; i < vsi->num_q_vectors; i++)
3764
			i40e_msix_clean_rings(0, vsi->q_vectors[i]);
J
Jesse Brandeburg 已提交
3765 3766 3767 3768 3769 3770
	} else {
		i40e_intr(pf->pdev->irq, netdev);
	}
}
#endif

3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791
/**
 * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
 * @pf: the PF being configured
 * @pf_q: the PF queue
 * @enable: enable or disable state of the queue
 *
 * This routine will wait for the given Tx queue of the PF to reach the
 * enabled or disabled state.
 * Returns -ETIMEDOUT in case of failing to reach the requested state after
 * multiple retries; else will return 0 in case of success.
 **/
static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
{
	int i;
	u32 tx_reg;

	for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
		tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
		if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
			break;

3792
		usleep_range(10, 20);
3793 3794 3795 3796 3797 3798 3799
	}
	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
		return -ETIMEDOUT;

	return 0;
}

J
Jesse Brandeburg 已提交
3800 3801 3802 3803 3804 3805 3806 3807 3808
/**
 * i40e_vsi_control_tx - Start or stop a VSI's rings
 * @vsi: the VSI being configured
 * @enable: start or stop the rings
 **/
static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
3809
	int i, j, pf_q, ret = 0;
J
Jesse Brandeburg 已提交
3810 3811 3812 3813
	u32 tx_reg;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3814 3815 3816 3817

		/* warn the TX unit of coming changes */
		i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
		if (!enable)
3818
			usleep_range(10, 20);
3819

3820
		for (j = 0; j < 50; j++) {
J
Jesse Brandeburg 已提交
3821
			tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3822 3823 3824 3825 3826
			if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
			    ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
				break;
			usleep_range(1000, 2000);
		}
3827
		/* Skip if the queue is already in the requested state */
3828
		if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3829
			continue;
J
Jesse Brandeburg 已提交
3830 3831

		/* turn on/off the queue */
3832 3833
		if (enable) {
			wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3834
			tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3835
		} else {
J
Jesse Brandeburg 已提交
3836
			tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3837
		}
J
Jesse Brandeburg 已提交
3838 3839

		wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3840 3841 3842
		/* No waiting for the Tx queue to disable */
		if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
			continue;
J
Jesse Brandeburg 已提交
3843 3844

		/* wait for the change to finish */
3845 3846 3847
		ret = i40e_pf_txq_wait(pf, pf_q, enable);
		if (ret) {
			dev_info(&pf->pdev->dev,
S
Shannon Nelson 已提交
3848 3849
				 "VSI seid %d Tx ring %d %sable timeout\n",
				 vsi->seid, pf_q, (enable ? "en" : "dis"));
3850
			break;
J
Jesse Brandeburg 已提交
3851 3852 3853
		}
	}

3854 3855
	if (hw->revision_id == 0)
		mdelay(50);
3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879
	return ret;
}

/**
 * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
 * @pf: the PF being configured
 * @pf_q: the PF queue
 * @enable: enable or disable state of the queue
 *
 * This routine will wait for the given Rx queue of the PF to reach the
 * enabled or disabled state.
 * Returns -ETIMEDOUT in case of failing to reach the requested state after
 * multiple retries; else will return 0 in case of success.
 **/
static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
{
	int i;
	u32 rx_reg;

	for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
		rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
		if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
			break;

3880
		usleep_range(10, 20);
3881 3882 3883
	}
	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
		return -ETIMEDOUT;
3884

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3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896
	return 0;
}

/**
 * i40e_vsi_control_rx - Start or stop a VSI's rings
 * @vsi: the VSI being configured
 * @enable: start or stop the rings
 **/
static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
3897
	int i, j, pf_q, ret = 0;
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3898 3899 3900 3901
	u32 rx_reg;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3902
		for (j = 0; j < 50; j++) {
J
Jesse Brandeburg 已提交
3903
			rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3904 3905 3906 3907 3908
			if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
			    ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
				break;
			usleep_range(1000, 2000);
		}
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3909

3910 3911 3912
		/* Skip if the queue is already in the requested state */
		if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
			continue;
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3913 3914 3915

		/* turn on/off the queue */
		if (enable)
3916
			rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
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Jesse Brandeburg 已提交
3917
		else
3918
			rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
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3919 3920 3921
		wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);

		/* wait for the change to finish */
3922 3923 3924
		ret = i40e_pf_rxq_wait(pf, pf_q, enable);
		if (ret) {
			dev_info(&pf->pdev->dev,
S
Shannon Nelson 已提交
3925 3926
				 "VSI seid %d Rx ring %d %sable timeout\n",
				 vsi->seid, pf_q, (enable ? "en" : "dis"));
3927
			break;
J
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3928 3929 3930
		}
	}

3931
	return ret;
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3932 3933 3934 3935 3936 3937 3938
}

/**
 * i40e_vsi_control_rings - Start or stop a VSI's rings
 * @vsi: the VSI being configured
 * @enable: start or stop the rings
 **/
M
Mitch Williams 已提交
3939
int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
J
Jesse Brandeburg 已提交
3940
{
3941
	int ret = 0;
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3942 3943 3944 3945 3946 3947 3948 3949

	/* do rx first for enable and last for disable */
	if (request) {
		ret = i40e_vsi_control_rx(vsi, request);
		if (ret)
			return ret;
		ret = i40e_vsi_control_tx(vsi, request);
	} else {
3950 3951 3952
		/* Ignore return value, we need to shutdown whatever we can */
		i40e_vsi_control_tx(vsi, request);
		i40e_vsi_control_rx(vsi, request);
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3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973
	}

	return ret;
}

/**
 * i40e_vsi_free_irq - Free the irq association with the OS
 * @vsi: the VSI being configured
 **/
static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	int base = vsi->base_vector;
	u32 val, qp;
	int i;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		if (!vsi->q_vectors)
			return;

3974 3975 3976 3977
		if (!vsi->irqs_ready)
			return;

		vsi->irqs_ready = false;
J
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3978 3979 3980 3981
		for (i = 0; i < vsi->num_q_vectors; i++) {
			u16 vector = i + base;

			/* free only the irqs that were actually requested */
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3982 3983
			if (!vsi->q_vectors[i] ||
			    !vsi->q_vectors[i]->num_ringpairs)
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Jesse Brandeburg 已提交
3984 3985 3986 3987 3988 3989
				continue;

			/* clear the affinity_mask in the IRQ descriptor */
			irq_set_affinity_hint(pf->msix_entries[vector].vector,
					      NULL);
			free_irq(pf->msix_entries[vector].vector,
3990
				 vsi->q_vectors[i]);
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Jesse Brandeburg 已提交
3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072

			/* Tear down the interrupt queue link list
			 *
			 * We know that they come in pairs and always
			 * the Rx first, then the Tx.  To clear the
			 * link list, stick the EOL value into the
			 * next_q field of the registers.
			 */
			val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
			qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
				>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
			val |= I40E_QUEUE_END_OF_LIST
				<< I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
			wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);

			while (qp != I40E_QUEUE_END_OF_LIST) {
				u32 next;

				val = rd32(hw, I40E_QINT_RQCTL(qp));

				val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
					 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
					 I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
					 I40E_QINT_RQCTL_INTEVENT_MASK);

				val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
					 I40E_QINT_RQCTL_NEXTQ_INDX_MASK);

				wr32(hw, I40E_QINT_RQCTL(qp), val);

				val = rd32(hw, I40E_QINT_TQCTL(qp));

				next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
					>> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;

				val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
					 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
					 I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
					 I40E_QINT_TQCTL_INTEVENT_MASK);

				val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
					 I40E_QINT_TQCTL_NEXTQ_INDX_MASK);

				wr32(hw, I40E_QINT_TQCTL(qp), val);
				qp = next;
			}
		}
	} else {
		free_irq(pf->pdev->irq, pf);

		val = rd32(hw, I40E_PFINT_LNKLST0);
		qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
			>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
		val |= I40E_QUEUE_END_OF_LIST
			<< I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
		wr32(hw, I40E_PFINT_LNKLST0, val);

		val = rd32(hw, I40E_QINT_RQCTL(qp));
		val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
			 I40E_QINT_RQCTL_MSIX0_INDX_MASK |
			 I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
			 I40E_QINT_RQCTL_INTEVENT_MASK);

		val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
			I40E_QINT_RQCTL_NEXTQ_INDX_MASK);

		wr32(hw, I40E_QINT_RQCTL(qp), val);

		val = rd32(hw, I40E_QINT_TQCTL(qp));

		val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
			 I40E_QINT_TQCTL_MSIX0_INDX_MASK |
			 I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
			 I40E_QINT_TQCTL_INTEVENT_MASK);

		val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
			I40E_QINT_TQCTL_NEXTQ_INDX_MASK);

		wr32(hw, I40E_QINT_TQCTL(qp), val);
	}
}

4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084
/**
 * i40e_free_q_vector - Free memory allocated for specific interrupt vector
 * @vsi: the VSI being configured
 * @v_idx: Index of vector to be freed
 *
 * This function frees the memory allocated to the q_vector.  In addition if
 * NAPI is enabled it will delete any references to the NAPI struct prior
 * to freeing the q_vector.
 **/
static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
{
	struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4085
	struct i40e_ring *ring;
4086 4087 4088 4089 4090

	if (!q_vector)
		return;

	/* disassociate q_vector from rings */
4091 4092 4093 4094 4095
	i40e_for_each_ring(ring, q_vector->tx)
		ring->q_vector = NULL;

	i40e_for_each_ring(ring, q_vector->rx)
		ring->q_vector = NULL;
4096 4097 4098 4099 4100 4101 4102 4103 4104 4105

	/* only VSI w/ an associated netdev is set up w/ NAPI */
	if (vsi->netdev)
		netif_napi_del(&q_vector->napi);

	vsi->q_vectors[v_idx] = NULL;

	kfree_rcu(q_vector, rcu);
}

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Jesse Brandeburg 已提交
4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116
/**
 * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
 * @vsi: the VSI being un-configured
 *
 * This frees the memory allocated to the q_vectors and
 * deletes references to the NAPI struct.
 **/
static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
{
	int v_idx;

4117 4118
	for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
		i40e_free_q_vector(vsi, v_idx);
J
Jesse Brandeburg 已提交
4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131
}

/**
 * i40e_reset_interrupt_capability - Disable interrupt setup in OS
 * @pf: board private structure
 **/
static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
{
	/* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		pci_disable_msix(pf->pdev);
		kfree(pf->msix_entries);
		pf->msix_entries = NULL;
4132 4133
		kfree(pf->irq_pile);
		pf->irq_pile = NULL;
J
Jesse Brandeburg 已提交
4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150
	} else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
		pci_disable_msi(pf->pdev);
	}
	pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
}

/**
 * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
 * @pf: board private structure
 *
 * We go through and clear interrupt specific resources and reset the structure
 * to pre-load conditions
 **/
static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
{
	int i;

4151 4152 4153 4154 4155 4156
	i40e_stop_misc_vector(pf);
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		synchronize_irq(pf->msix_entries[0].vector);
		free_irq(pf->msix_entries[0].vector, pf);
	}

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Jesse Brandeburg 已提交
4157
	i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
M
Mitch Williams 已提交
4158
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175
		if (pf->vsi[i])
			i40e_vsi_free_q_vectors(pf->vsi[i]);
	i40e_reset_interrupt_capability(pf);
}

/**
 * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
 * @vsi: the VSI being configured
 **/
static void i40e_napi_enable_all(struct i40e_vsi *vsi)
{
	int q_idx;

	if (!vsi->netdev)
		return;

	for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4176
		napi_enable(&vsi->q_vectors[q_idx]->napi);
J
Jesse Brandeburg 已提交
4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190
}

/**
 * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
 * @vsi: the VSI being configured
 **/
static void i40e_napi_disable_all(struct i40e_vsi *vsi)
{
	int q_idx;

	if (!vsi->netdev)
		return;

	for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4191
		napi_disable(&vsi->q_vectors[q_idx]->napi);
J
Jesse Brandeburg 已提交
4192 4193
}

4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204
/**
 * i40e_vsi_close - Shut down a VSI
 * @vsi: the vsi to be quelled
 **/
static void i40e_vsi_close(struct i40e_vsi *vsi)
{
	if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
		i40e_down(vsi);
	i40e_vsi_free_irq(vsi);
	i40e_vsi_free_tx_resources(vsi);
	i40e_vsi_free_rx_resources(vsi);
4205
	vsi->current_netdev_flags = 0;
4206 4207
}

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Jesse Brandeburg 已提交
4208 4209 4210 4211 4212 4213 4214 4215 4216
/**
 * i40e_quiesce_vsi - Pause a given VSI
 * @vsi: the VSI being paused
 **/
static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
{
	if (test_bit(__I40E_DOWN, &vsi->state))
		return;

4217 4218 4219 4220
	/* No need to disable FCoE VSI when Tx suspended */
	if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
	    vsi->type == I40E_VSI_FCOE) {
		dev_dbg(&vsi->back->pdev->dev,
S
Shannon Nelson 已提交
4221
			 "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4222 4223 4224
		return;
	}

J
Jesse Brandeburg 已提交
4225
	set_bit(__I40E_NEEDS_RESTART, &vsi->state);
J
Jesse Brandeburg 已提交
4226
	if (vsi->netdev && netif_running(vsi->netdev))
J
Jesse Brandeburg 已提交
4227
		vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
J
Jesse Brandeburg 已提交
4228
	else
4229
		i40e_vsi_close(vsi);
J
Jesse Brandeburg 已提交
4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244
}

/**
 * i40e_unquiesce_vsi - Resume a given VSI
 * @vsi: the VSI being resumed
 **/
static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
{
	if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
		return;

	clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
	if (vsi->netdev && netif_running(vsi->netdev))
		vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
	else
4245
		i40e_vsi_open(vsi);   /* this clears the DOWN bit */
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Jesse Brandeburg 已提交
4246 4247 4248 4249 4250 4251 4252 4253 4254 4255
}

/**
 * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
 * @pf: the PF
 **/
static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
{
	int v;

M
Mitch Williams 已提交
4256
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269
		if (pf->vsi[v])
			i40e_quiesce_vsi(pf->vsi[v]);
	}
}

/**
 * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
 * @pf: the PF
 **/
static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
{
	int v;

M
Mitch Williams 已提交
4270
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
4271 4272 4273 4274 4275
		if (pf->vsi[v])
			i40e_unquiesce_vsi(pf->vsi[v]);
	}
}

4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293
#ifdef CONFIG_I40E_DCB
/**
 * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
 * @vsi: the VSI being configured
 *
 * This function waits for the given VSI's Tx queues to be disabled.
 **/
static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	int i, pf_q, ret;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
		/* Check and wait for the disable status of the queue */
		ret = i40e_pf_txq_wait(pf, pf_q, false);
		if (ret) {
			dev_info(&pf->pdev->dev,
S
Shannon Nelson 已提交
4294 4295
				 "VSI seid %d Tx ring %d disable timeout\n",
				 vsi->seid, pf_q);
4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314
			return ret;
		}
	}

	return 0;
}

/**
 * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
 * @pf: the PF
 *
 * This function waits for the Tx queues to be in disabled state for all the
 * VSIs that are managed by this PF.
 **/
static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
{
	int v, ret = 0;

	for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4315 4316
		/* No need to wait for FCoE VSI queues */
		if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4317 4318 4319 4320 4321 4322 4323 4324 4325 4326
			ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
			if (ret)
				break;
		}
	}

	return ret;
}

#endif
4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428

/**
 * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
 * @q_idx: TX queue number
 * @vsi: Pointer to VSI struct
 *
 * This function checks specified queue for given VSI. Detects hung condition.
 * Sets hung bit since it is two step process. Before next run of service task
 * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
 * hung condition remain unchanged and during subsequent run, this function
 * issues SW interrupt to recover from hung condition.
 **/
static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
{
	struct i40e_ring *tx_ring = NULL;
	struct i40e_pf	*pf;
	u32 head, val, tx_pending;
	int i;

	pf = vsi->back;

	/* now that we have an index, find the tx_ring struct */
	for (i = 0; i < vsi->num_queue_pairs; i++) {
		if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
			if (q_idx == vsi->tx_rings[i]->queue_index) {
				tx_ring = vsi->tx_rings[i];
				break;
			}
		}
	}

	if (!tx_ring)
		return;

	/* Read interrupt register */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		val = rd32(&pf->hw,
			   I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
					       tx_ring->vsi->base_vector - 1));
	else
		val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);

	head = i40e_get_head(tx_ring);

	tx_pending = i40e_get_tx_pending(tx_ring);

	/* Interrupts are disabled and TX pending is non-zero,
	 * trigger the SW interrupt (don't wait). Worst case
	 * there will be one extra interrupt which may result
	 * into not cleaning any queues because queues are cleaned.
	 */
	if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
		i40e_force_wb(vsi, tx_ring->q_vector);
}

/**
 * i40e_detect_recover_hung - Function to detect and recover hung_queues
 * @pf:  pointer to PF struct
 *
 * LAN VSI has netdev and netdev has TX queues. This function is to check
 * each of those TX queues if they are hung, trigger recovery by issuing
 * SW interrupt.
 **/
static void i40e_detect_recover_hung(struct i40e_pf *pf)
{
	struct net_device *netdev;
	struct i40e_vsi *vsi;
	int i;

	/* Only for LAN VSI */
	vsi = pf->vsi[pf->lan_vsi];

	if (!vsi)
		return;

	/* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
	if (test_bit(__I40E_DOWN, &vsi->back->state) ||
	    test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
		return;

	/* Make sure type is MAIN VSI */
	if (vsi->type != I40E_VSI_MAIN)
		return;

	netdev = vsi->netdev;
	if (!netdev)
		return;

	/* Bail out if netif_carrier is not OK */
	if (!netif_carrier_ok(netdev))
		return;

	/* Go thru' TX queues for netdev */
	for (i = 0; i < netdev->num_tx_queues; i++) {
		struct netdev_queue *q;

		q = netdev_get_tx_queue(netdev, i);
		if (q)
			i40e_detect_recover_hung_queue(i, vsi);
	}
}

4429 4430
/**
 * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4431
 * @pf: pointer to PF
4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449
 *
 * Get TC map for ISCSI PF type that will include iSCSI TC
 * and LAN TC.
 **/
static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
{
	struct i40e_dcb_app_priority_table app;
	struct i40e_hw *hw = &pf->hw;
	u8 enabled_tc = 1; /* TC0 is always enabled */
	u8 tc, i;
	/* Get the iSCSI APP TLV */
	struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;

	for (i = 0; i < dcbcfg->numapps; i++) {
		app = dcbcfg->app[i];
		if (app.selector == I40E_APP_SEL_TCPIP &&
		    app.protocolid == I40E_APP_PROTOID_ISCSI) {
			tc = dcbcfg->etscfg.prioritytable[app.priority];
4450
			enabled_tc |= BIT_ULL(tc);
4451 4452 4453 4454 4455 4456 4457
			break;
		}
	}

	return enabled_tc;
}

J
Jesse Brandeburg 已提交
4458 4459 4460 4461 4462 4463 4464 4465
/**
 * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
 * @dcbcfg: the corresponding DCBx configuration structure
 *
 * Return the number of TCs from given DCBx configuration
 **/
static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
{
J
Jesse Brandeburg 已提交
4466 4467
	u8 num_tc = 0;
	int i;
J
Jesse Brandeburg 已提交
4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481

	/* Scan the ETS Config Priority Table to find
	 * traffic class enabled for a given priority
	 * and use the traffic class index to get the
	 * number of traffic classes enabled
	 */
	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
		if (dcbcfg->etscfg.prioritytable[i] > num_tc)
			num_tc = dcbcfg->etscfg.prioritytable[i];
	}

	/* Traffic class index starts from zero so
	 * increment to return the actual count
	 */
J
Jesse Brandeburg 已提交
4482
	return num_tc + 1;
J
Jesse Brandeburg 已提交
4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498
}

/**
 * i40e_dcb_get_enabled_tc - Get enabled traffic classes
 * @dcbcfg: the corresponding DCBx configuration structure
 *
 * Query the current DCB configuration and return the number of
 * traffic classes enabled from the given DCBX config
 **/
static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
{
	u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
	u8 enabled_tc = 1;
	u8 i;

	for (i = 0; i < num_tc; i++)
4499
		enabled_tc |= BIT(i);
J
Jesse Brandeburg 已提交
4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520

	return enabled_tc;
}

/**
 * i40e_pf_get_num_tc - Get enabled traffic classes for PF
 * @pf: PF being queried
 *
 * Return number of traffic classes enabled for the given PF
 **/
static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	u8 i, enabled_tc;
	u8 num_tc = 0;
	struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;

	/* If DCB is not enabled then always in single TC */
	if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
		return 1;

4521 4522 4523 4524
	/* SFP mode will be enabled for all TCs on port */
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		return i40e_dcb_get_num_tc(dcbcfg);

J
Jesse Brandeburg 已提交
4525
	/* MFP mode return count of enabled TCs for this PF */
4526 4527 4528
	if (pf->hw.func_caps.iscsi)
		enabled_tc =  i40e_get_iscsi_tc_map(pf);
	else
4529
		return 1; /* Only TC0 */
J
Jesse Brandeburg 已提交
4530

4531 4532 4533
	/* At least have TC0 */
	enabled_tc = (enabled_tc ? enabled_tc : 0x1);
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4534
		if (enabled_tc & BIT_ULL(i))
4535 4536 4537
			num_tc++;
	}
	return num_tc;
J
Jesse Brandeburg 已提交
4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555
}

/**
 * i40e_pf_get_default_tc - Get bitmap for first enabled TC
 * @pf: PF being queried
 *
 * Return a bitmap for first enabled traffic class for this PF.
 **/
static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
{
	u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
	u8 i = 0;

	if (!enabled_tc)
		return 0x1; /* TC0 */

	/* Find the first enabled TC */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4556
		if (enabled_tc & BIT_ULL(i))
J
Jesse Brandeburg 已提交
4557 4558 4559
			break;
	}

4560
	return BIT(i);
J
Jesse Brandeburg 已提交
4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575
}

/**
 * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
 * @pf: PF being queried
 *
 * Return a bitmap for enabled traffic classes for this PF.
 **/
static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
{
	/* If DCB is not enabled for this PF then just return default TC */
	if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
		return i40e_pf_get_default_tc(pf);

	/* SFP mode we want PF to be enabled for all TCs */
4576 4577 4578
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);

4579
	/* MFP enabled and iSCSI PF type */
4580 4581 4582
	if (pf->hw.func_caps.iscsi)
		return i40e_get_iscsi_tc_map(pf);
	else
4583
		return i40e_pf_get_default_tc(pf);
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Jesse Brandeburg 已提交
4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597
}

/**
 * i40e_vsi_get_bw_info - Query VSI BW Information
 * @vsi: the VSI being queried
 *
 * Returns 0 on success, negative value on failure
 **/
static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
{
	struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
	struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
4598
	i40e_status ret;
J
Jesse Brandeburg 已提交
4599 4600 4601 4602
	u32 tc_bw_max;
	int i;

	/* Get the VSI level BW configuration */
4603 4604
	ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
	if (ret) {
J
Jesse Brandeburg 已提交
4605
		dev_info(&pf->pdev->dev,
4606 4607 4608
			 "couldn't get PF vsi bw config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
4609
		return -EINVAL;
J
Jesse Brandeburg 已提交
4610 4611 4612
	}

	/* Get the VSI level BW configuration per TC */
4613 4614 4615
	ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
					       NULL);
	if (ret) {
J
Jesse Brandeburg 已提交
4616
		dev_info(&pf->pdev->dev,
4617 4618 4619
			 "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
4620
		return -EINVAL;
J
Jesse Brandeburg 已提交
4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641
	}

	if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
		dev_info(&pf->pdev->dev,
			 "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
			 bw_config.tc_valid_bits,
			 bw_ets_config.tc_valid_bits);
		/* Still continuing */
	}

	vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
	vsi->bw_max_quanta = bw_config.max_bw;
	tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
		    (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
		vsi->bw_ets_limit_credits[i] =
					le16_to_cpu(bw_ets_config.credits[i]);
		/* 3 bits out of 4 for each TC */
		vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
	}
J
Jesse Brandeburg 已提交
4642

J
Jesse Brandeburg 已提交
4643
	return 0;
J
Jesse Brandeburg 已提交
4644 4645 4646 4647 4648 4649 4650 4651 4652 4653
}

/**
 * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
 * @vsi: the VSI being configured
 * @enabled_tc: TC bitmap
 * @bw_credits: BW shared credits per TC
 *
 * Returns 0 on success, negative value on failure
 **/
J
Jesse Brandeburg 已提交
4654
static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
J
Jesse Brandeburg 已提交
4655 4656 4657
				       u8 *bw_share)
{
	struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4658
	i40e_status ret;
J
Jesse Brandeburg 已提交
4659
	int i;
J
Jesse Brandeburg 已提交
4660 4661 4662 4663 4664

	bw_data.tc_valid_bits = enabled_tc;
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
		bw_data.tc_bw_credits[i] = bw_share[i];

4665 4666 4667
	ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
				       NULL);
	if (ret) {
J
Jesse Brandeburg 已提交
4668
		dev_info(&vsi->back->pdev->dev,
J
Jesse Brandeburg 已提交
4669 4670
			 "AQ command Config VSI BW allocation per TC failed = %d\n",
			 vsi->back->hw.aq.asq_last_status);
J
Jesse Brandeburg 已提交
4671
		return -EINVAL;
J
Jesse Brandeburg 已提交
4672 4673 4674 4675 4676
	}

	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
		vsi->info.qs_handle[i] = bw_data.qs_handles[i];

J
Jesse Brandeburg 已提交
4677
	return 0;
J
Jesse Brandeburg 已提交
4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715
}

/**
 * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
 * @vsi: the VSI being configured
 * @enabled_tc: TC map to be enabled
 *
 **/
static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
{
	struct net_device *netdev = vsi->netdev;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u8 netdev_tc = 0;
	int i;
	struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;

	if (!netdev)
		return;

	if (!enabled_tc) {
		netdev_reset_tc(netdev);
		return;
	}

	/* Set up actual enabled TCs on the VSI */
	if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
		return;

	/* set per TC queues for the VSI */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		/* Only set TC queues for enabled tcs
		 *
		 * e.g. For a VSI that has TC0 and TC3 enabled the
		 * enabled_tc bitmap would be 0x00001001; the driver
		 * will set the numtc for netdev as 2 that will be
		 * referenced by the netdev layer as TC 0 and 1.
		 */
4716
		if (vsi->tc_config.enabled_tc & BIT_ULL(i))
J
Jesse Brandeburg 已提交
4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777
			netdev_set_tc_queue(netdev,
					vsi->tc_config.tc_info[i].netdev_tc,
					vsi->tc_config.tc_info[i].qcount,
					vsi->tc_config.tc_info[i].qoffset);
	}

	/* Assign UP2TC map for the VSI */
	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
		/* Get the actual TC# for the UP */
		u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
		/* Get the mapped netdev TC# for the UP */
		netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
		netdev_set_prio_tc_map(netdev, i, netdev_tc);
	}
}

/**
 * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
 * @vsi: the VSI being configured
 * @ctxt: the ctxt buffer returned from AQ VSI update param command
 **/
static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
				      struct i40e_vsi_context *ctxt)
{
	/* copy just the sections touched not the entire info
	 * since not all sections are valid as returned by
	 * update vsi params
	 */
	vsi->info.mapping_flags = ctxt->info.mapping_flags;
	memcpy(&vsi->info.queue_mapping,
	       &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
	memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
	       sizeof(vsi->info.tc_mapping));
}

/**
 * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
 * @vsi: VSI to be configured
 * @enabled_tc: TC bitmap
 *
 * This configures a particular VSI for TCs that are mapped to the
 * given TC bitmap. It uses default bandwidth share for TCs across
 * VSIs to configure TC for a particular VSI.
 *
 * NOTE:
 * It is expected that the VSI queues have been quisced before calling
 * this function.
 **/
static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
{
	u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
	struct i40e_vsi_context ctxt;
	int ret = 0;
	int i;

	/* Check if enabled_tc is same as existing or new TCs */
	if (vsi->tc_config.enabled_tc == enabled_tc)
		return ret;

	/* Enable ETS TCs with equal BW Share for now across all VSIs */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4778
		if (enabled_tc & BIT_ULL(i))
J
Jesse Brandeburg 已提交
4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794
			bw_share[i] = 1;
	}

	ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
			 "Failed configuring TC map %d for VSI %d\n",
			 enabled_tc, vsi->seid);
		goto out;
	}

	/* Update Queue Pairs Mapping for currently enabled UPs */
	ctxt.seid = vsi->seid;
	ctxt.pf_num = vsi->back->hw.pf_id;
	ctxt.vf_num = 0;
	ctxt.uplink_seid = vsi->uplink_seid;
4795
	ctxt.info = vsi->info;
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Jesse Brandeburg 已提交
4796 4797 4798 4799 4800 4801
	i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);

	/* Update the VSI after updating the VSI queue-mapping information */
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
4802 4803 4804 4805
			 "Update vsi tc config failed, err %s aq_err %s\n",
			 i40e_stat_str(&vsi->back->hw, ret),
			 i40e_aq_str(&vsi->back->hw,
				     vsi->back->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
4806 4807 4808 4809 4810 4811 4812 4813 4814 4815
		goto out;
	}
	/* update the local VSI info with updated queue map */
	i40e_vsi_update_queue_map(vsi, &ctxt);
	vsi->info.valid_sections = 0;

	/* Update current VSI BW information */
	ret = i40e_vsi_get_bw_info(vsi);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
4816 4817 4818 4819
			 "Failed updating vsi bw info, err %s aq_err %s\n",
			 i40e_stat_str(&vsi->back->hw, ret),
			 i40e_aq_str(&vsi->back->hw,
				     vsi->back->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
4820 4821 4822 4823 4824 4825 4826 4827 4828
		goto out;
	}

	/* Update the netdev TC setup */
	i40e_vsi_config_netdev_tc(vsi, enabled_tc);
out:
	return ret;
}

N
Neerav Parikh 已提交
4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851
/**
 * i40e_veb_config_tc - Configure TCs for given VEB
 * @veb: given VEB
 * @enabled_tc: TC bitmap
 *
 * Configures given TC bitmap for VEB (switching) element
 **/
int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
{
	struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
	struct i40e_pf *pf = veb->pf;
	int ret = 0;
	int i;

	/* No TCs or already enabled TCs just return */
	if (!enabled_tc || veb->enabled_tc == enabled_tc)
		return ret;

	bw_data.tc_valid_bits = enabled_tc;
	/* bw_data.absolute_credits is not set (relative) */

	/* Enable ETS TCs with equal BW Share for now */
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4852
		if (enabled_tc & BIT_ULL(i))
N
Neerav Parikh 已提交
4853 4854 4855 4856 4857 4858 4859
			bw_data.tc_bw_share_credits[i] = 1;
	}

	ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
						   &bw_data, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
4860 4861 4862
			 "VEB bw config failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
N
Neerav Parikh 已提交
4863 4864 4865 4866 4867 4868 4869
		goto out;
	}

	/* Update the BW information */
	ret = i40e_veb_get_bw_info(veb);
	if (ret) {
		dev_info(&pf->pdev->dev,
4870 4871 4872
			 "Failed getting veb bw config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
N
Neerav Parikh 已提交
4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908
	}

out:
	return ret;
}

#ifdef CONFIG_I40E_DCB
/**
 * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
 * @pf: PF struct
 *
 * Reconfigure VEB/VSIs on a given PF; it is assumed that
 * the caller would've quiesce all the VSIs before calling
 * this function
 **/
static void i40e_dcb_reconfigure(struct i40e_pf *pf)
{
	u8 tc_map = 0;
	int ret;
	u8 v;

	/* Enable the TCs available on PF to all VEBs */
	tc_map = i40e_pf_get_tc_map(pf);
	for (v = 0; v < I40E_MAX_VEB; v++) {
		if (!pf->veb[v])
			continue;
		ret = i40e_veb_config_tc(pf->veb[v], tc_map);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Failed configuring TC for VEB seid=%d\n",
				 pf->veb[v]->seid);
			/* Will try to configure as many components */
		}
	}

	/* Update each VSI */
M
Mitch Williams 已提交
4909
	for (v = 0; v < pf->num_alloc_vsi; v++) {
N
Neerav Parikh 已提交
4910 4911 4912 4913
		if (!pf->vsi[v])
			continue;

		/* - Enable all TCs for the LAN VSI
4914 4915 4916 4917
#ifdef I40E_FCOE
		 * - For FCoE VSI only enable the TC configured
		 *   as per the APP TLV
#endif
N
Neerav Parikh 已提交
4918 4919 4920 4921 4922 4923
		 * - For all others keep them at TC0 for now
		 */
		if (v == pf->lan_vsi)
			tc_map = i40e_pf_get_tc_map(pf);
		else
			tc_map = i40e_pf_get_default_tc(pf);
4924 4925 4926 4927
#ifdef I40E_FCOE
		if (pf->vsi[v]->type == I40E_VSI_FCOE)
			tc_map = i40e_get_fcoe_tc_map(pf);
#endif /* #ifdef I40E_FCOE */
N
Neerav Parikh 已提交
4928 4929 4930 4931 4932 4933 4934 4935

		ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "Failed configuring TC for VSI seid=%d\n",
				 pf->vsi[v]->seid);
			/* Will try to configure as many components */
		} else {
4936 4937
			/* Re-configure VSI vectors based on updated TC map */
			i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
N
Neerav Parikh 已提交
4938 4939 4940 4941 4942 4943
			if (pf->vsi[v]->netdev)
				i40e_dcbnl_set_all(pf->vsi[v]);
		}
	}
}

4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958
/**
 * i40e_resume_port_tx - Resume port Tx
 * @pf: PF struct
 *
 * Resume a port's Tx and issue a PF reset in case of failure to
 * resume.
 **/
static int i40e_resume_port_tx(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	int ret;

	ret = i40e_aq_resume_port_tx(hw, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
4959 4960 4961
			 "Resume Port Tx failed, err %s aq_err %s\n",
			  i40e_stat_str(&pf->hw, ret),
			  i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4962 4963 4964 4965 4966 4967 4968 4969
		/* Schedule PF reset to recover */
		set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
		i40e_service_event_schedule(pf);
	}

	return ret;
}

N
Neerav Parikh 已提交
4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981
/**
 * i40e_init_pf_dcb - Initialize DCB configuration
 * @pf: PF being configured
 *
 * Query the current DCB configuration and cache it
 * in the hardware structure
 **/
static int i40e_init_pf_dcb(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	int err = 0;

4982 4983 4984 4985 4986
	/* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
	if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
	    (pf->hw.aq.fw_maj_ver < 4))
		goto out;

N
Neerav Parikh 已提交
4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002
	/* Get the initial DCB configuration */
	err = i40e_init_dcb(hw);
	if (!err) {
		/* Device/Function is not DCBX capable */
		if ((!hw->func_caps.dcb) ||
		    (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
			dev_info(&pf->pdev->dev,
				 "DCBX offload is not supported or is disabled for this PF.\n");

			if (pf->flags & I40E_FLAG_MFP_ENABLED)
				goto out;

		} else {
			/* When status is not DISABLED then DCBX in FW */
			pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
				       DCB_CAP_DCBX_VER_IEEE;
5003 5004 5005 5006 5007

			pf->flags |= I40E_FLAG_DCB_CAPABLE;
			/* Enable DCB tagging only when more than one TC */
			if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
				pf->flags |= I40E_FLAG_DCB_ENABLED;
5008 5009
			dev_dbg(&pf->pdev->dev,
				"DCBX offload is supported for this PF.\n");
N
Neerav Parikh 已提交
5010
		}
5011
	} else {
5012
		dev_info(&pf->pdev->dev,
5013 5014 5015
			 "Query for DCB configuration failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, err),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
N
Neerav Parikh 已提交
5016 5017 5018 5019 5020 5021
	}

out:
	return err;
}
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
5022 5023 5024 5025 5026 5027
#define SPEED_SIZE 14
#define FC_SIZE 8
/**
 * i40e_print_link_message - print link up or down
 * @vsi: the VSI for which link needs a message
 */
M
Matt Jared 已提交
5028
void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
J
Jesse Brandeburg 已提交
5029
{
5030 5031
	char *speed = "Unknown";
	char *fc = "Unknown";
J
Jesse Brandeburg 已提交
5032

M
Matt Jared 已提交
5033 5034 5035
	if (vsi->current_isup == isup)
		return;
	vsi->current_isup = isup;
J
Jesse Brandeburg 已提交
5036 5037 5038 5039 5040
	if (!isup) {
		netdev_info(vsi->netdev, "NIC Link is Down\n");
		return;
	}

5041 5042 5043 5044 5045 5046 5047 5048 5049
	/* Warn user if link speed on NPAR enabled partition is not at
	 * least 10GB
	 */
	if (vsi->back->hw.func_caps.npar_enable &&
	    (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
	     vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
		netdev_warn(vsi->netdev,
			    "The partition detected link speed that is less than 10Gbps\n");

J
Jesse Brandeburg 已提交
5050 5051
	switch (vsi->back->hw.phy.link_info.link_speed) {
	case I40E_LINK_SPEED_40GB:
5052
		speed = "40 G";
J
Jesse Brandeburg 已提交
5053
		break;
5054
	case I40E_LINK_SPEED_20GB:
5055
		speed = "20 G";
5056
		break;
J
Jesse Brandeburg 已提交
5057
	case I40E_LINK_SPEED_10GB:
5058
		speed = "10 G";
J
Jesse Brandeburg 已提交
5059 5060
		break;
	case I40E_LINK_SPEED_1GB:
5061
		speed = "1000 M";
J
Jesse Brandeburg 已提交
5062
		break;
M
Mitch Williams 已提交
5063
	case I40E_LINK_SPEED_100MB:
5064
		speed = "100 M";
M
Mitch Williams 已提交
5065
		break;
J
Jesse Brandeburg 已提交
5066 5067 5068 5069 5070 5071
	default:
		break;
	}

	switch (vsi->back->hw.fc.current_mode) {
	case I40E_FC_FULL:
5072
		fc = "RX/TX";
J
Jesse Brandeburg 已提交
5073 5074
		break;
	case I40E_FC_TX_PAUSE:
5075
		fc = "TX";
J
Jesse Brandeburg 已提交
5076 5077
		break;
	case I40E_FC_RX_PAUSE:
5078
		fc = "RX";
J
Jesse Brandeburg 已提交
5079 5080
		break;
	default:
5081
		fc = "None";
J
Jesse Brandeburg 已提交
5082 5083 5084
		break;
	}

5085
	netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
J
Jesse Brandeburg 已提交
5086 5087
		    speed, fc);
}
N
Neerav Parikh 已提交
5088

J
Jesse Brandeburg 已提交
5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113
/**
 * i40e_up_complete - Finish the last steps of bringing up a connection
 * @vsi: the VSI being configured
 **/
static int i40e_up_complete(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	int err;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		i40e_vsi_configure_msix(vsi);
	else
		i40e_configure_msi_and_legacy(vsi);

	/* start rings */
	err = i40e_vsi_control_rings(vsi, true);
	if (err)
		return err;

	clear_bit(__I40E_DOWN, &vsi->state);
	i40e_napi_enable_all(vsi);
	i40e_vsi_enable_irq(vsi);

	if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
	    (vsi->netdev)) {
J
Jesse Brandeburg 已提交
5114
		i40e_print_link_message(vsi, true);
J
Jesse Brandeburg 已提交
5115 5116
		netif_tx_start_all_queues(vsi->netdev);
		netif_carrier_on(vsi->netdev);
A
Anjali Singhai 已提交
5117
	} else if (vsi->netdev) {
J
Jesse Brandeburg 已提交
5118
		i40e_print_link_message(vsi, false);
5119 5120 5121 5122 5123 5124 5125
		/* need to check for qualified module here*/
		if ((pf->hw.phy.link_info.link_info &
			I40E_AQ_MEDIA_AVAILABLE) &&
		    (!(pf->hw.phy.link_info.an_info &
			I40E_AQ_QUALIFIED_MODULE)))
			netdev_err(vsi->netdev,
				   "the driver failed to link because an unqualified module was detected.");
J
Jesse Brandeburg 已提交
5126
	}
5127 5128

	/* replay FDIR SB filters */
5129 5130 5131 5132 5133
	if (vsi->type == I40E_VSI_FDIR) {
		/* reset fd counters */
		pf->fd_add_err = pf->fd_atr_cnt = 0;
		if (pf->fd_tcp_rule > 0) {
			pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5134 5135
			if (I40E_DEBUG_FD & pf->hw.debug_mask)
				dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5136 5137
			pf->fd_tcp_rule = 0;
		}
5138
		i40e_fdir_filter_restore(vsi);
5139
	}
J
Jesse Brandeburg 已提交
5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205
	i40e_service_event_schedule(pf);

	return 0;
}

/**
 * i40e_vsi_reinit_locked - Reset the VSI
 * @vsi: the VSI being configured
 *
 * Rebuild the ring structs after some configuration
 * has changed, e.g. MTU size.
 **/
static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;

	WARN_ON(in_interrupt());
	while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
		usleep_range(1000, 2000);
	i40e_down(vsi);

	/* Give a VF some time to respond to the reset.  The
	 * two second wait is based upon the watchdog cycle in
	 * the VF driver.
	 */
	if (vsi->type == I40E_VSI_SRIOV)
		msleep(2000);
	i40e_up(vsi);
	clear_bit(__I40E_CONFIG_BUSY, &pf->state);
}

/**
 * i40e_up - Bring the connection back up after being down
 * @vsi: the VSI being configured
 **/
int i40e_up(struct i40e_vsi *vsi)
{
	int err;

	err = i40e_vsi_configure(vsi);
	if (!err)
		err = i40e_up_complete(vsi);

	return err;
}

/**
 * i40e_down - Shutdown the connection processing
 * @vsi: the VSI being stopped
 **/
void i40e_down(struct i40e_vsi *vsi)
{
	int i;

	/* It is assumed that the caller of this function
	 * sets the vsi->state __I40E_DOWN bit.
	 */
	if (vsi->netdev) {
		netif_carrier_off(vsi->netdev);
		netif_tx_disable(vsi->netdev);
	}
	i40e_vsi_disable_irq(vsi);
	i40e_vsi_control_rings(vsi, false);
	i40e_napi_disable_all(vsi);

	for (i = 0; i < vsi->num_queue_pairs; i++) {
5206 5207
		i40e_clean_tx_ring(vsi->tx_rings[i]);
		i40e_clean_rx_ring(vsi->rx_rings[i]);
J
Jesse Brandeburg 已提交
5208 5209 5210 5211 5212 5213 5214 5215
	}
}

/**
 * i40e_setup_tc - configure multiple traffic classes
 * @netdev: net device to configure
 * @tc: number of traffic classes to enable
 **/
5216 5217 5218
#ifdef I40E_FCOE
int i40e_setup_tc(struct net_device *netdev, u8 tc)
#else
J
Jesse Brandeburg 已提交
5219
static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5220
#endif
J
Jesse Brandeburg 已提交
5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	u8 enabled_tc = 0;
	int ret = -EINVAL;
	int i;

	/* Check if DCB enabled to continue */
	if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
		netdev_info(netdev, "DCB is not enabled for adapter\n");
		goto exit;
	}

	/* Check if MFP enabled */
	if (pf->flags & I40E_FLAG_MFP_ENABLED) {
		netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
		goto exit;
	}

	/* Check whether tc count is within enabled limit */
	if (tc > i40e_pf_get_num_tc(pf)) {
		netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
		goto exit;
	}

	/* Generate TC map for number of tc requested */
	for (i = 0; i < tc; i++)
5249
		enabled_tc |= BIT_ULL(i);
J
Jesse Brandeburg 已提交
5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284

	/* Requesting same TC configuration as already enabled */
	if (enabled_tc == vsi->tc_config.enabled_tc)
		return 0;

	/* Quiesce VSI queues */
	i40e_quiesce_vsi(vsi);

	/* Configure VSI for enabled TCs */
	ret = i40e_vsi_config_tc(vsi, enabled_tc);
	if (ret) {
		netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
			    vsi->seid);
		goto exit;
	}

	/* Unquiesce VSI */
	i40e_unquiesce_vsi(vsi);

exit:
	return ret;
}

/**
 * i40e_open - Called when a network interface is made active
 * @netdev: network interface device structure
 *
 * The open entry point is called when a network interface is made
 * active by the system (IFF_UP).  At this point all resources needed
 * for transmit and receive operations are allocated, the interrupt
 * handler is registered with the OS, the netdev watchdog subtask is
 * enabled, and the stack is notified that the interface is ready.
 *
 * Returns 0 on success, negative value on failure
 **/
5285
int i40e_open(struct net_device *netdev)
J
Jesse Brandeburg 已提交
5286 5287 5288 5289 5290 5291
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int err;

5292 5293 5294
	/* disallow open during test or if eeprom is broken */
	if (test_bit(__I40E_TESTING, &pf->state) ||
	    test_bit(__I40E_BAD_EEPROM, &pf->state))
J
Jesse Brandeburg 已提交
5295 5296 5297 5298
		return -EBUSY;

	netif_carrier_off(netdev);

5299 5300 5301 5302
	err = i40e_vsi_open(vsi);
	if (err)
		return err;

5303 5304 5305 5306 5307 5308 5309 5310
	/* configure global TSO hardware offload settings */
	wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
						       TCP_FLAG_FIN) >> 16);
	wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
						       TCP_FLAG_FIN |
						       TCP_FLAG_CWR) >> 16);
	wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);

5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328
#ifdef CONFIG_I40E_VXLAN
	vxlan_get_rx_port(netdev);
#endif

	return 0;
}

/**
 * i40e_vsi_open -
 * @vsi: the VSI to open
 *
 * Finish initialization of the VSI.
 *
 * Returns 0 on success, negative value on failure
 **/
int i40e_vsi_open(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
5329
	char int_name[I40E_INT_NAME_STR_LEN];
5330 5331
	int err;

J
Jesse Brandeburg 已提交
5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343
	/* allocate descriptors */
	err = i40e_vsi_setup_tx_resources(vsi);
	if (err)
		goto err_setup_tx;
	err = i40e_vsi_setup_rx_resources(vsi);
	if (err)
		goto err_setup_rx;

	err = i40e_vsi_configure(vsi);
	if (err)
		goto err_setup_rx;

5344 5345 5346 5347 5348 5349
	if (vsi->netdev) {
		snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
			 dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
		err = i40e_vsi_request_irq(vsi, int_name);
		if (err)
			goto err_setup_rx;
J
Jesse Brandeburg 已提交
5350

5351 5352 5353 5354 5355
		/* Notify the stack of the actual queue counts. */
		err = netif_set_real_num_tx_queues(vsi->netdev,
						   vsi->num_queue_pairs);
		if (err)
			goto err_set_queues;
5356

5357 5358 5359 5360
		err = netif_set_real_num_rx_queues(vsi->netdev,
						   vsi->num_queue_pairs);
		if (err)
			goto err_set_queues;
5361 5362

	} else if (vsi->type == I40E_VSI_FDIR) {
5363
		snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5364 5365
			 dev_driver_string(&pf->pdev->dev),
			 dev_name(&pf->pdev->dev));
5366
		err = i40e_vsi_request_irq(vsi, int_name);
5367

5368
	} else {
5369
		err = -EINVAL;
5370 5371
		goto err_setup_rx;
	}
5372

J
Jesse Brandeburg 已提交
5373 5374 5375 5376 5377 5378 5379 5380
	err = i40e_up_complete(vsi);
	if (err)
		goto err_up_complete;

	return 0;

err_up_complete:
	i40e_down(vsi);
5381
err_set_queues:
J
Jesse Brandeburg 已提交
5382 5383 5384 5385 5386 5387
	i40e_vsi_free_irq(vsi);
err_setup_rx:
	i40e_vsi_free_rx_resources(vsi);
err_setup_tx:
	i40e_vsi_free_tx_resources(vsi);
	if (vsi == pf->vsi[pf->lan_vsi])
5388
		i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
J
Jesse Brandeburg 已提交
5389 5390 5391 5392

	return err;
}

5393 5394
/**
 * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5395
 * @pf: Pointer to PF
5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412
 *
 * This function destroys the hlist where all the Flow Director
 * filters were saved.
 **/
static void i40e_fdir_filter_exit(struct i40e_pf *pf)
{
	struct i40e_fdir_filter *filter;
	struct hlist_node *node2;

	hlist_for_each_entry_safe(filter, node2,
				  &pf->fdir_filter_list, fdir_node) {
		hlist_del(&filter->fdir_node);
		kfree(filter);
	}
	pf->fdir_pf_active_filters = 0;
}

J
Jesse Brandeburg 已提交
5413 5414 5415 5416 5417 5418 5419 5420 5421 5422
/**
 * i40e_close - Disables a network interface
 * @netdev: network interface device structure
 *
 * The close entry point is called when an interface is de-activated
 * by the OS.  The hardware is still under the driver's control, but
 * this netdev interface is disabled.
 *
 * Returns 0, this is not allowed to fail
 **/
5423 5424 5425
#ifdef I40E_FCOE
int i40e_close(struct net_device *netdev)
#else
J
Jesse Brandeburg 已提交
5426
static int i40e_close(struct net_device *netdev)
5427
#endif
J
Jesse Brandeburg 已提交
5428 5429 5430 5431
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

5432
	i40e_vsi_close(vsi);
J
Jesse Brandeburg 已提交
5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451

	return 0;
}

/**
 * i40e_do_reset - Start a PF or Core Reset sequence
 * @pf: board private structure
 * @reset_flags: which reset is requested
 *
 * The essential difference in resets is that the PF Reset
 * doesn't clear the packet buffers, doesn't reset the PE
 * firmware, and doesn't bother the other PFs on the chip.
 **/
void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
{
	u32 val;

	WARN_ON(in_interrupt());

5452 5453 5454
	if (i40e_check_asq_alive(&pf->hw))
		i40e_vc_notify_reset(pf);

J
Jesse Brandeburg 已提交
5455
	/* do the biggest reset indicated */
5456
	if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
J
Jesse Brandeburg 已提交
5457 5458 5459 5460 5461 5462 5463 5464 5465

		/* Request a Global Reset
		 *
		 * This will start the chip's countdown to the actual full
		 * chip reset event, and a warning interrupt to be sent
		 * to all PFs, including the requestor.  Our handler
		 * for the warning interrupt will deal with the shutdown
		 * and recovery of the switch setup.
		 */
J
Jesse Brandeburg 已提交
5466
		dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
J
Jesse Brandeburg 已提交
5467 5468 5469 5470
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);

5471
	} else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
J
Jesse Brandeburg 已提交
5472 5473 5474 5475 5476

		/* Request a Core Reset
		 *
		 * Same as Global Reset, except does *not* include the MAC/PHY
		 */
J
Jesse Brandeburg 已提交
5477
		dev_dbg(&pf->pdev->dev, "CoreR requested\n");
J
Jesse Brandeburg 已提交
5478 5479 5480 5481 5482
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_CORER_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
		i40e_flush(&pf->hw);

5483
	} else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
J
Jesse Brandeburg 已提交
5484 5485 5486 5487 5488 5489 5490 5491 5492

		/* Request a PF Reset
		 *
		 * Resets only the PF-specific registers
		 *
		 * This goes directly to the tear-down and rebuild of
		 * the switch, since we need to do all the recovery as
		 * for the Core Reset.
		 */
J
Jesse Brandeburg 已提交
5493
		dev_dbg(&pf->pdev->dev, "PFR requested\n");
J
Jesse Brandeburg 已提交
5494 5495
		i40e_handle_reset_warning(pf);

5496
	} else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
J
Jesse Brandeburg 已提交
5497 5498 5499 5500 5501
		int v;

		/* Find the VSI(s) that requested a re-init */
		dev_info(&pf->pdev->dev,
			 "VSI reinit requested\n");
M
Mitch Williams 已提交
5502
		for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
5503
			struct i40e_vsi *vsi = pf->vsi[v];
J
Jesse Brandeburg 已提交
5504

J
Jesse Brandeburg 已提交
5505 5506 5507 5508 5509 5510
			if (vsi != NULL &&
			    test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
				i40e_vsi_reinit_locked(pf->vsi[v]);
				clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
			}
		}
5511
	} else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5512 5513 5514 5515 5516 5517
		int v;

		/* Find the VSI(s) that needs to be brought down */
		dev_info(&pf->pdev->dev, "VSI down requested\n");
		for (v = 0; v < pf->num_alloc_vsi; v++) {
			struct i40e_vsi *vsi = pf->vsi[v];
J
Jesse Brandeburg 已提交
5518

5519 5520 5521 5522 5523 5524 5525
			if (vsi != NULL &&
			    test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
				set_bit(__I40E_DOWN, &vsi->state);
				i40e_down(vsi);
				clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
			}
		}
J
Jesse Brandeburg 已提交
5526 5527 5528 5529 5530 5531
	} else {
		dev_info(&pf->pdev->dev,
			 "bad reset request 0x%08x\n", reset_flags);
	}
}

N
Neerav Parikh 已提交
5532 5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553
#ifdef CONFIG_I40E_DCB
/**
 * i40e_dcb_need_reconfig - Check if DCB needs reconfig
 * @pf: board private structure
 * @old_cfg: current DCB config
 * @new_cfg: new DCB config
 **/
bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
			    struct i40e_dcbx_config *old_cfg,
			    struct i40e_dcbx_config *new_cfg)
{
	bool need_reconfig = false;

	/* Check if ETS configuration has changed */
	if (memcmp(&new_cfg->etscfg,
		   &old_cfg->etscfg,
		   sizeof(new_cfg->etscfg))) {
		/* If Priority Table has changed reconfig is needed */
		if (memcmp(&new_cfg->etscfg.prioritytable,
			   &old_cfg->etscfg.prioritytable,
			   sizeof(new_cfg->etscfg.prioritytable))) {
			need_reconfig = true;
J
Jesse Brandeburg 已提交
5554
			dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
N
Neerav Parikh 已提交
5555 5556 5557 5558 5559
		}

		if (memcmp(&new_cfg->etscfg.tcbwtable,
			   &old_cfg->etscfg.tcbwtable,
			   sizeof(new_cfg->etscfg.tcbwtable)))
J
Jesse Brandeburg 已提交
5560
			dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
N
Neerav Parikh 已提交
5561 5562 5563 5564

		if (memcmp(&new_cfg->etscfg.tsatable,
			   &old_cfg->etscfg.tsatable,
			   sizeof(new_cfg->etscfg.tsatable)))
J
Jesse Brandeburg 已提交
5565
			dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
N
Neerav Parikh 已提交
5566 5567 5568 5569 5570 5571 5572
	}

	/* Check if PFC configuration has changed */
	if (memcmp(&new_cfg->pfc,
		   &old_cfg->pfc,
		   sizeof(new_cfg->pfc))) {
		need_reconfig = true;
J
Jesse Brandeburg 已提交
5573
		dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
N
Neerav Parikh 已提交
5574 5575 5576 5577 5578
	}

	/* Check if APP Table has changed */
	if (memcmp(&new_cfg->app,
		   &old_cfg->app,
5579
		   sizeof(new_cfg->app))) {
N
Neerav Parikh 已提交
5580
		need_reconfig = true;
J
Jesse Brandeburg 已提交
5581
		dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5582
	}
N
Neerav Parikh 已提交
5583

S
Shannon Nelson 已提交
5584
	dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
N
Neerav Parikh 已提交
5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603
	return need_reconfig;
}

/**
 * i40e_handle_lldp_event - Handle LLDP Change MIB event
 * @pf: board private structure
 * @e: event info posted on ARQ
 **/
static int i40e_handle_lldp_event(struct i40e_pf *pf,
				  struct i40e_arq_event_info *e)
{
	struct i40e_aqc_lldp_get_mib *mib =
		(struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_dcbx_config tmp_dcbx_cfg;
	bool need_reconfig = false;
	int ret = 0;
	u8 type;

5604 5605 5606 5607
	/* Not DCB capable or capability disabled */
	if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
		return ret;

N
Neerav Parikh 已提交
5608 5609 5610
	/* Ignore if event is not for Nearest Bridge */
	type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
		& I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
S
Shannon Nelson 已提交
5611
	dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
N
Neerav Parikh 已提交
5612 5613 5614 5615 5616
	if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
		return ret;

	/* Check MIB Type and return if event for Remote MIB update */
	type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5617
	dev_dbg(&pf->pdev->dev,
S
Shannon Nelson 已提交
5618
		"LLDP event mib type %s\n", type ? "remote" : "local");
N
Neerav Parikh 已提交
5619 5620 5621 5622 5623 5624 5625 5626
	if (type == I40E_AQ_LLDP_MIB_REMOTE) {
		/* Update the remote cached instance and return */
		ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
				I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
				&hw->remote_dcbx_config);
		goto exit;
	}

5627
	/* Store the old configuration */
5628
	tmp_dcbx_cfg = hw->local_dcbx_config;
5629

5630 5631
	/* Reset the old DCBx configuration data */
	memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5632 5633
	/* Get updated DCBX data from firmware */
	ret = i40e_get_dcb_config(&pf->hw);
N
Neerav Parikh 已提交
5634
	if (ret) {
5635 5636 5637 5638
		dev_info(&pf->pdev->dev,
			 "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
N
Neerav Parikh 已提交
5639 5640 5641 5642
		goto exit;
	}

	/* No change detected in DCBX configs */
5643 5644
	if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
		    sizeof(tmp_dcbx_cfg))) {
J
Jesse Brandeburg 已提交
5645
		dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
N
Neerav Parikh 已提交
5646 5647 5648
		goto exit;
	}

5649 5650
	need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
					       &hw->local_dcbx_config);
N
Neerav Parikh 已提交
5651

5652
	i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
N
Neerav Parikh 已提交
5653 5654 5655 5656

	if (!need_reconfig)
		goto exit;

5657
	/* Enable DCB tagging only when more than one TC */
5658
	if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5659 5660 5661 5662
		pf->flags |= I40E_FLAG_DCB_ENABLED;
	else
		pf->flags &= ~I40E_FLAG_DCB_ENABLED;

5663
	set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
N
Neerav Parikh 已提交
5664 5665 5666 5667 5668 5669
	/* Reconfiguration needed quiesce all VSIs */
	i40e_pf_quiesce_all_vsi(pf);

	/* Changes in configuration update VEB/VSI */
	i40e_dcb_reconfigure(pf);

5670 5671
	ret = i40e_resume_port_tx(pf);

5672
	clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5673
	/* In case of error no point in resuming VSIs */
5674 5675 5676 5677 5678
	if (ret)
		goto exit;

	/* Wait for the PF's Tx queues to be disabled */
	ret = i40e_pf_wait_txq_disabled(pf);
5679 5680 5681 5682 5683
	if (ret) {
		/* Schedule PF reset to recover */
		set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
		i40e_service_event_schedule(pf);
	} else {
5684
		i40e_pf_unquiesce_all_vsi(pf);
5685 5686
	}

N
Neerav Parikh 已提交
5687 5688 5689 5690 5691
exit:
	return ret;
}
#endif /* CONFIG_I40E_DCB */

5692 5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704
/**
 * i40e_do_reset_safe - Protected reset path for userland calls.
 * @pf: board private structure
 * @reset_flags: which reset is requested
 *
 **/
void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
{
	rtnl_lock();
	i40e_do_reset(pf, reset_flags);
	rtnl_unlock();
}

J
Jesse Brandeburg 已提交
5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723
/**
 * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
 * @pf: board private structure
 * @e: event info posted on ARQ
 *
 * Handler for LAN Queue Overflow Event generated by the firmware for PF
 * and VF queues
 **/
static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
					   struct i40e_arq_event_info *e)
{
	struct i40e_aqc_lan_overflow *data =
		(struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
	u32 queue = le32_to_cpu(data->prtdcb_rupto);
	u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vf *vf;
	u16 vf_id;

J
Jesse Brandeburg 已提交
5724 5725
	dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
		queue, qtx_ctl);
J
Jesse Brandeburg 已提交
5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746

	/* Queue belongs to VF, find the VF and issue VF reset */
	if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
	    >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
		vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
			 >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
		vf_id -= hw->func_caps.vf_base_id;
		vf = &pf->vf[vf_id];
		i40e_vc_notify_vf_reset(vf);
		/* Allow VF to process pending reset notification */
		msleep(20);
		i40e_reset_vf(vf, false);
	}
}

/**
 * i40e_service_event_complete - Finish up the service event
 * @pf: board private structure
 **/
static void i40e_service_event_complete(struct i40e_pf *pf)
{
5747
	WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
J
Jesse Brandeburg 已提交
5748 5749

	/* flush memory to make sure state is correct before next watchog */
5750
	smp_mb__before_atomic();
J
Jesse Brandeburg 已提交
5751 5752 5753
	clear_bit(__I40E_SERVICE_SCHED, &pf->state);
}

5754
/**
5755 5756 5757
 * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
 * @pf: board private structure
 **/
5758
u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5759
{
5760
	u32 val, fcnt_prog;
5761 5762 5763 5764 5765 5766 5767

	val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
	fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
	return fcnt_prog;
}

/**
5768
 * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5769 5770
 * @pf: board private structure
 **/
5771
u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5772
{
5773 5774
	u32 val, fcnt_prog;

5775 5776 5777 5778 5779 5780
	val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
	fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
		    ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
		      I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
	return fcnt_prog;
}
5781

5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796
/**
 * i40e_get_global_fd_count - Get total FD filters programmed on device
 * @pf: board private structure
 **/
u32 i40e_get_global_fd_count(struct i40e_pf *pf)
{
	u32 val, fcnt_prog;

	val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
	fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
		    ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
		     I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
	return fcnt_prog;
}

5797 5798 5799 5800 5801 5802
/**
 * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
 * @pf: board private structure
 **/
void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
{
5803
	struct i40e_fdir_filter *filter;
5804
	u32 fcnt_prog, fcnt_avail;
5805
	struct hlist_node *node;
5806

5807 5808 5809
	if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
		return;

5810 5811 5812
	/* Check if, FD SB or ATR was auto disabled and if there is enough room
	 * to re-enable
	 */
5813
	fcnt_prog = i40e_get_global_fd_count(pf);
5814
	fcnt_avail = pf->fdir_pf_filter_count;
5815 5816 5817
	if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
	    (pf->fd_add_err == 0) ||
	    (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5818 5819 5820
		if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
		    (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
			pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5821 5822
			if (I40E_DEBUG_FD & pf->hw.debug_mask)
				dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5823 5824 5825 5826 5827 5828 5829
		}
	}
	/* Wait for some more space to be available to turn on ATR */
	if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
		if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
		    (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
			pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5830 5831
			if (I40E_DEBUG_FD & pf->hw.debug_mask)
				dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5832 5833
		}
	}
5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845

	/* if hw had a problem adding a filter, delete it */
	if (pf->fd_inv > 0) {
		hlist_for_each_entry_safe(filter, node,
					  &pf->fdir_filter_list, fdir_node) {
			if (filter->fd_id == pf->fd_inv) {
				hlist_del(&filter->fdir_node);
				kfree(filter);
				pf->fdir_pf_active_filters--;
			}
		}
	}
5846 5847
}

5848
#define I40E_MIN_FD_FLUSH_INTERVAL 10
5849
#define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5850 5851 5852 5853 5854 5855
/**
 * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
 * @pf: board private structure
 **/
static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
{
5856
	unsigned long min_flush_time;
5857
	int flush_wait_retry = 50;
5858 5859
	bool disable_atr = false;
	int fd_room;
5860 5861
	int reg;

5862 5863 5864
	if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
		return;

5865 5866 5867
	if (!time_after(jiffies, pf->fd_flush_timestamp +
				 (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
		return;
5868

5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907
	/* If the flush is happening too quick and we have mostly SB rules we
	 * should not re-enable ATR for some time.
	 */
	min_flush_time = pf->fd_flush_timestamp +
			 (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
	fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;

	if (!(time_after(jiffies, min_flush_time)) &&
	    (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
		if (I40E_DEBUG_FD & pf->hw.debug_mask)
			dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
		disable_atr = true;
	}

	pf->fd_flush_timestamp = jiffies;
	pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
	/* flush all filters */
	wr32(&pf->hw, I40E_PFQF_CTL_1,
	     I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
	i40e_flush(&pf->hw);
	pf->fd_flush_cnt++;
	pf->fd_add_err = 0;
	do {
		/* Check FD flush status every 5-6msec */
		usleep_range(5000, 6000);
		reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
		if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
			break;
	} while (flush_wait_retry--);
	if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
		dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
	} else {
		/* replay sideband filters */
		i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
		if (!disable_atr)
			pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
		clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
		if (I40E_DEBUG_FD & pf->hw.debug_mask)
			dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5908
	}
5909

5910 5911 5912 5913 5914 5915
}

/**
 * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
 * @pf: board private structure
 **/
5916
u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927
{
	return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
}

/* We can see up to 256 filter programming desc in transit if the filters are
 * being applied really fast; before we see the first
 * filter miss error on Rx queue 0. Accumulating enough error messages before
 * reacting will make sure we don't cause flush too often.
 */
#define I40E_MAX_FD_PROGRAM_ERROR 256

J
Jesse Brandeburg 已提交
5928 5929 5930 5931 5932 5933 5934 5935 5936 5937
/**
 * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
 * @pf: board private structure
 **/
static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
{

	/* if interface is down do nothing */
	if (test_bit(__I40E_DOWN, &pf->state))
		return;
5938

5939 5940 5941
	if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
		return;

5942
	if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5943 5944
		i40e_fdir_flush_and_replay(pf);

5945 5946
	i40e_fdir_check_and_reenable(pf);

J
Jesse Brandeburg 已提交
5947 5948 5949 5950 5951 5952 5953 5954 5955
}

/**
 * i40e_vsi_link_event - notify VSI of a link event
 * @vsi: vsi to be notified
 * @link_up: link up or down
 **/
static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
{
5956
	if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
J
Jesse Brandeburg 已提交
5957 5958 5959 5960
		return;

	switch (vsi->type) {
	case I40E_VSI_MAIN:
5961 5962 5963
#ifdef I40E_FCOE
	case I40E_VSI_FCOE:
#endif
J
Jesse Brandeburg 已提交
5964 5965 5966 5967 5968 5969 5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 5988 5989 5990 5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002 6003 6004 6005
		if (!vsi->netdev || !vsi->netdev_registered)
			break;

		if (link_up) {
			netif_carrier_on(vsi->netdev);
			netif_tx_wake_all_queues(vsi->netdev);
		} else {
			netif_carrier_off(vsi->netdev);
			netif_tx_stop_all_queues(vsi->netdev);
		}
		break;

	case I40E_VSI_SRIOV:
	case I40E_VSI_VMDQ2:
	case I40E_VSI_CTRL:
	case I40E_VSI_MIRROR:
	default:
		/* there is no notification for other VSIs */
		break;
	}
}

/**
 * i40e_veb_link_event - notify elements on the veb of a link event
 * @veb: veb to be notified
 * @link_up: link up or down
 **/
static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
{
	struct i40e_pf *pf;
	int i;

	if (!veb || !veb->pf)
		return;
	pf = veb->pf;

	/* depth first... */
	for (i = 0; i < I40E_MAX_VEB; i++)
		if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
			i40e_veb_link_event(pf->veb[i], link_up);

	/* ... now the local VSIs */
M
Mitch Williams 已提交
6006
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
6007 6008 6009 6010 6011 6012 6013 6014 6015 6016
		if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
			i40e_vsi_link_event(pf->vsi[i], link_up);
}

/**
 * i40e_link_event - Update netif_carrier status
 * @pf: board private structure
 **/
static void i40e_link_event(struct i40e_pf *pf)
{
M
Mitch Williams 已提交
6017
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6018
	u8 new_link_speed, old_link_speed;
6019 6020
	i40e_status status;
	bool new_link, old_link;
J
Jesse Brandeburg 已提交
6021

6022 6023 6024
	/* save off old link status information */
	pf->hw.phy.link_info_old = pf->hw.phy.link_info;

6025 6026 6027
	/* set this to force the get_link_status call to refresh state */
	pf->hw.phy.get_link_info = true;

J
Jesse Brandeburg 已提交
6028
	old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6029 6030 6031 6032 6033 6034 6035 6036

	status = i40e_get_link_status(&pf->hw, &new_link);
	if (status) {
		dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
			status);
		return;
	}

6037 6038
	old_link_speed = pf->hw.phy.link_info_old.link_speed;
	new_link_speed = pf->hw.phy.link_info.link_speed;
J
Jesse Brandeburg 已提交
6039

6040
	if (new_link == old_link &&
6041
	    new_link_speed == old_link_speed &&
M
Mitch Williams 已提交
6042 6043
	    (test_bit(__I40E_DOWN, &vsi->state) ||
	     new_link == netif_carrier_ok(vsi->netdev)))
J
Jesse Brandeburg 已提交
6044
		return;
M
Mitch Williams 已提交
6045 6046 6047

	if (!test_bit(__I40E_DOWN, &vsi->state))
		i40e_print_link_message(vsi, new_link);
J
Jesse Brandeburg 已提交
6048 6049 6050 6051 6052 6053 6054

	/* Notify the base of the switch tree connected to
	 * the link.  Floating VEBs are not notified.
	 */
	if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
		i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
	else
M
Mitch Williams 已提交
6055
		i40e_vsi_link_event(vsi, new_link);
J
Jesse Brandeburg 已提交
6056 6057 6058

	if (pf->vf)
		i40e_vc_notify_link_state(pf);
J
Jacob Keller 已提交
6059 6060 6061

	if (pf->flags & I40E_FLAG_PTP)
		i40e_ptp_set_increment(pf);
J
Jesse Brandeburg 已提交
6062 6063 6064
}

/**
6065
 * i40e_watchdog_subtask - periodic checks not using event driven response
J
Jesse Brandeburg 已提交
6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076
 * @pf: board private structure
 **/
static void i40e_watchdog_subtask(struct i40e_pf *pf)
{
	int i;

	/* if interface is down do nothing */
	if (test_bit(__I40E_DOWN, &pf->state) ||
	    test_bit(__I40E_CONFIG_BUSY, &pf->state))
		return;

6077 6078 6079 6080 6081 6082
	/* make sure we don't do these things too often */
	if (time_before(jiffies, (pf->service_timer_previous +
				  pf->service_timer_period)))
		return;
	pf->service_timer_previous = jiffies;

S
Shannon Nelson 已提交
6083 6084
	if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
		i40e_link_event(pf);
6085

J
Jesse Brandeburg 已提交
6086 6087 6088
	/* Update the stats for active netdevs so the network stack
	 * can look at updated numbers whenever it cares to
	 */
M
Mitch Williams 已提交
6089
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
6090 6091 6092
		if (pf->vsi[i] && pf->vsi[i]->netdev)
			i40e_update_stats(pf->vsi[i]);

6093 6094 6095 6096 6097 6098
	if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
		/* Update the stats for the active switching components */
		for (i = 0; i < I40E_MAX_VEB; i++)
			if (pf->veb[i])
				i40e_update_veb_stats(pf->veb[i]);
	}
J
Jacob Keller 已提交
6099 6100

	i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
J
Jesse Brandeburg 已提交
6101 6102 6103 6104 6105 6106 6107 6108 6109 6110
}

/**
 * i40e_reset_subtask - Set up for resetting the device and driver
 * @pf: board private structure
 **/
static void i40e_reset_subtask(struct i40e_pf *pf)
{
	u32 reset_flags = 0;

6111
	rtnl_lock();
J
Jesse Brandeburg 已提交
6112
	if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6113
		reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
J
Jesse Brandeburg 已提交
6114 6115 6116
		clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
	}
	if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6117
		reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
J
Jesse Brandeburg 已提交
6118 6119 6120
		clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
	}
	if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6121
		reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
J
Jesse Brandeburg 已提交
6122 6123 6124
		clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
	}
	if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6125
		reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
J
Jesse Brandeburg 已提交
6126 6127
		clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
	}
6128
	if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6129
		reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
6130 6131
		clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
	}
J
Jesse Brandeburg 已提交
6132 6133 6134 6135 6136 6137

	/* If there's a recovery already waiting, it takes
	 * precedence before starting a new reset sequence.
	 */
	if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
		i40e_handle_reset_warning(pf);
6138
		goto unlock;
J
Jesse Brandeburg 已提交
6139 6140 6141 6142 6143 6144 6145
	}

	/* If we're already down or resetting, just bail */
	if (reset_flags &&
	    !test_bit(__I40E_DOWN, &pf->state) &&
	    !test_bit(__I40E_CONFIG_BUSY, &pf->state))
		i40e_do_reset(pf, reset_flags);
6146 6147 6148

unlock:
	rtnl_unlock();
J
Jesse Brandeburg 已提交
6149 6150 6151 6152 6153 6154 6155 6156 6157 6158 6159 6160 6161
}

/**
 * i40e_handle_link_event - Handle link event
 * @pf: board private structure
 * @e: event info posted on ARQ
 **/
static void i40e_handle_link_event(struct i40e_pf *pf,
				   struct i40e_arq_event_info *e)
{
	struct i40e_aqc_get_link_status *status =
		(struct i40e_aqc_get_link_status *)&e->desc.params.raw;

6162 6163 6164 6165 6166 6167 6168 6169
	/* Do a new status request to re-enable LSE reporting
	 * and load new status information into the hw struct
	 * This completely ignores any state information
	 * in the ARQ event info, instead choosing to always
	 * issue the AQ update link status command.
	 */
	i40e_link_event(pf);

6170 6171 6172 6173 6174 6175
	/* check for unqualified module, if link is down */
	if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
	    (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
	    (!(status->link_info & I40E_AQ_LINK_UP)))
		dev_err(&pf->pdev->dev,
			"The driver failed to link because an unqualified module was detected.\n");
J
Jesse Brandeburg 已提交
6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188
}

/**
 * i40e_clean_adminq_subtask - Clean the AdminQ rings
 * @pf: board private structure
 **/
static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
{
	struct i40e_arq_event_info event;
	struct i40e_hw *hw = &pf->hw;
	u16 pending, i = 0;
	i40e_status ret;
	u16 opcode;
6189
	u32 oldval;
J
Jesse Brandeburg 已提交
6190 6191
	u32 val;

6192 6193 6194 6195
	/* Do not run clean AQ when PF reset fails */
	if (test_bit(__I40E_RESET_FAILED, &pf->state))
		return;

6196 6197 6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230
	/* check for error indications */
	val = rd32(&pf->hw, pf->hw.aq.arq.len);
	oldval = val;
	if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
		dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
		val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
	}
	if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
		dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
		val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
	}
	if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
		dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
		val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
	}
	if (oldval != val)
		wr32(&pf->hw, pf->hw.aq.arq.len, val);

	val = rd32(&pf->hw, pf->hw.aq.asq.len);
	oldval = val;
	if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
		dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
		val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
	}
	if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
		dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
		val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
	}
	if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
		dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
		val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
	}
	if (oldval != val)
		wr32(&pf->hw, pf->hw.aq.asq.len, val);

M
Mitch Williams 已提交
6231 6232
	event.buf_len = I40E_MAX_AQ_BUF_SIZE;
	event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
J
Jesse Brandeburg 已提交
6233 6234 6235 6236 6237
	if (!event.msg_buf)
		return;

	do {
		ret = i40e_clean_arq_element(hw, &event, &pending);
M
Mitch Williams 已提交
6238
		if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
J
Jesse Brandeburg 已提交
6239
			break;
M
Mitch Williams 已提交
6240
		else if (ret) {
J
Jesse Brandeburg 已提交
6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252 6253 6254 6255 6256
			dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
			break;
		}

		opcode = le16_to_cpu(event.desc.opcode);
		switch (opcode) {

		case i40e_aqc_opc_get_link_status:
			i40e_handle_link_event(pf, &event);
			break;
		case i40e_aqc_opc_send_msg_to_pf:
			ret = i40e_vc_process_vf_msg(pf,
					le16_to_cpu(event.desc.retval),
					le32_to_cpu(event.desc.cookie_high),
					le32_to_cpu(event.desc.cookie_low),
					event.msg_buf,
M
Mitch Williams 已提交
6257
					event.msg_len);
J
Jesse Brandeburg 已提交
6258 6259
			break;
		case i40e_aqc_opc_lldp_update_mib:
J
Jesse Brandeburg 已提交
6260
			dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
N
Neerav Parikh 已提交
6261 6262 6263 6264 6265
#ifdef CONFIG_I40E_DCB
			rtnl_lock();
			ret = i40e_handle_lldp_event(pf, &event);
			rtnl_unlock();
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
6266 6267
			break;
		case i40e_aqc_opc_event_lan_overflow:
J
Jesse Brandeburg 已提交
6268
			dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
J
Jesse Brandeburg 已提交
6269 6270
			i40e_handle_lan_overflow_event(pf, &event);
			break;
6271 6272 6273
		case i40e_aqc_opc_send_msg_to_peer:
			dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
			break;
6274 6275 6276 6277
		case i40e_aqc_opc_nvm_erase:
		case i40e_aqc_opc_nvm_update:
			i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
			break;
J
Jesse Brandeburg 已提交
6278 6279
		default:
			dev_info(&pf->pdev->dev,
6280 6281
				 "ARQ Error: Unknown event 0x%04x received\n",
				 opcode);
J
Jesse Brandeburg 已提交
6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295
			break;
		}
	} while (pending && (i++ < pf->adminq_work_limit));

	clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
	/* re-enable Admin queue interrupt cause */
	val = rd32(hw, I40E_PFINT_ICR0_ENA);
	val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
	wr32(hw, I40E_PFINT_ICR0_ENA, val);
	i40e_flush(hw);

	kfree(event.msg_buf);
}

6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320
/**
 * i40e_verify_eeprom - make sure eeprom is good to use
 * @pf: board private structure
 **/
static void i40e_verify_eeprom(struct i40e_pf *pf)
{
	int err;

	err = i40e_diag_eeprom_test(&pf->hw);
	if (err) {
		/* retry in case of garbage read */
		err = i40e_diag_eeprom_test(&pf->hw);
		if (err) {
			dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
				 err);
			set_bit(__I40E_BAD_EEPROM, &pf->state);
		}
	}

	if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
		dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
		clear_bit(__I40E_BAD_EEPROM, &pf->state);
	}
}

6321 6322
/**
 * i40e_enable_pf_switch_lb
6323
 * @pf: pointer to the PF structure
6324 6325 6326 6327 6328 6329 6330
 *
 * enable switch loop back or die - no point in a return value
 **/
static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	struct i40e_vsi_context ctxt;
6331
	int ret;
6332 6333 6334 6335

	ctxt.seid = pf->main_vsi_seid;
	ctxt.pf_num = pf->hw.pf_id;
	ctxt.vf_num = 0;
6336 6337
	ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
	if (ret) {
6338
		dev_info(&pf->pdev->dev,
6339 6340 6341
			 "couldn't get PF vsi config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6342 6343 6344 6345 6346 6347
		return;
	}
	ctxt.flags = I40E_AQ_VSI_TYPE_PF;
	ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
	ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);

6348 6349
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
6350
		dev_info(&pf->pdev->dev,
6351 6352 6353
			 "update vsi switch failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6354 6355 6356 6357 6358
	}
}

/**
 * i40e_disable_pf_switch_lb
6359
 * @pf: pointer to the PF structure
6360 6361 6362 6363 6364 6365 6366
 *
 * disable switch loop back or die - no point in a return value
 **/
static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	struct i40e_vsi_context ctxt;
6367
	int ret;
6368 6369 6370 6371

	ctxt.seid = pf->main_vsi_seid;
	ctxt.pf_num = pf->hw.pf_id;
	ctxt.vf_num = 0;
6372 6373
	ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
	if (ret) {
6374
		dev_info(&pf->pdev->dev,
6375 6376 6377
			 "couldn't get PF vsi config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6378 6379 6380 6381 6382 6383
		return;
	}
	ctxt.flags = I40E_AQ_VSI_TYPE_PF;
	ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
	ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);

6384 6385
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
6386
		dev_info(&pf->pdev->dev,
6387 6388 6389
			 "update vsi switch failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6390 6391 6392
	}
}

6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404
/**
 * i40e_config_bridge_mode - Configure the HW bridge mode
 * @veb: pointer to the bridge instance
 *
 * Configure the loop back mode for the LAN VSI that is downlink to the
 * specified HW bridge instance. It is expected this function is called
 * when a new HW bridge is instantiated.
 **/
static void i40e_config_bridge_mode(struct i40e_veb *veb)
{
	struct i40e_pf *pf = veb->pf;

6405 6406 6407
	if (pf->hw.debug_mask & I40E_DEBUG_LAN)
		dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
			 veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6408 6409 6410 6411 6412 6413
	if (veb->bridge_mode & BRIDGE_MODE_VEPA)
		i40e_disable_pf_switch_lb(pf);
	else
		i40e_enable_pf_switch_lb(pf);
}

J
Jesse Brandeburg 已提交
6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430
/**
 * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
 * @veb: pointer to the VEB instance
 *
 * This is a recursive function that first builds the attached VSIs then
 * recurses in to build the next layer of VEB.  We track the connections
 * through our own index numbers because the seid's from the HW could
 * change across the reset.
 **/
static int i40e_reconstitute_veb(struct i40e_veb *veb)
{
	struct i40e_vsi *ctl_vsi = NULL;
	struct i40e_pf *pf = veb->pf;
	int v, veb_idx;
	int ret;

	/* build VSI that owns this VEB, temporarily attached to base VEB */
M
Mitch Williams 已提交
6431
	for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
J
Jesse Brandeburg 已提交
6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449
		if (pf->vsi[v] &&
		    pf->vsi[v]->veb_idx == veb->idx &&
		    pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
			ctl_vsi = pf->vsi[v];
			break;
		}
	}
	if (!ctl_vsi) {
		dev_info(&pf->pdev->dev,
			 "missing owner VSI for veb_idx %d\n", veb->idx);
		ret = -ENOENT;
		goto end_reconstitute;
	}
	if (ctl_vsi != pf->vsi[pf->lan_vsi])
		ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
	ret = i40e_add_vsi(ctl_vsi);
	if (ret) {
		dev_info(&pf->pdev->dev,
6450 6451
			 "rebuild of veb_idx %d owner VSI failed: %d\n",
			 veb->idx, ret);
J
Jesse Brandeburg 已提交
6452 6453 6454 6455 6456 6457 6458 6459 6460
		goto end_reconstitute;
	}
	i40e_vsi_reset_stats(ctl_vsi);

	/* create the VEB in the switch and move the VSI onto the VEB */
	ret = i40e_add_veb(veb, ctl_vsi);
	if (ret)
		goto end_reconstitute;

6461 6462 6463 6464
	if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
		veb->bridge_mode = BRIDGE_MODE_VEB;
	else
		veb->bridge_mode = BRIDGE_MODE_VEPA;
6465
	i40e_config_bridge_mode(veb);
6466

J
Jesse Brandeburg 已提交
6467
	/* create the remaining VSIs attached to this VEB */
M
Mitch Williams 已提交
6468
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
6469 6470 6471 6472 6473
		if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
			continue;

		if (pf->vsi[v]->veb_idx == veb->idx) {
			struct i40e_vsi *vsi = pf->vsi[v];
J
Jesse Brandeburg 已提交
6474

J
Jesse Brandeburg 已提交
6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523 6524 6525 6526 6527 6528 6529 6530
			vsi->uplink_seid = veb->seid;
			ret = i40e_add_vsi(vsi);
			if (ret) {
				dev_info(&pf->pdev->dev,
					 "rebuild of vsi_idx %d failed: %d\n",
					 v, ret);
				goto end_reconstitute;
			}
			i40e_vsi_reset_stats(vsi);
		}
	}

	/* create any VEBs attached to this VEB - RECURSION */
	for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
		if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
			pf->veb[veb_idx]->uplink_seid = veb->seid;
			ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
			if (ret)
				break;
		}
	}

end_reconstitute:
	return ret;
}

/**
 * i40e_get_capabilities - get info about the HW
 * @pf: the PF struct
 **/
static int i40e_get_capabilities(struct i40e_pf *pf)
{
	struct i40e_aqc_list_capabilities_element_resp *cap_buf;
	u16 data_size;
	int buf_len;
	int err;

	buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
	do {
		cap_buf = kzalloc(buf_len, GFP_KERNEL);
		if (!cap_buf)
			return -ENOMEM;

		/* this loads the data into the hw struct for us */
		err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
					    &data_size,
					    i40e_aqc_opc_list_func_capabilities,
					    NULL);
		/* data loaded, buffer no longer needed */
		kfree(cap_buf);

		if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
			/* retry with a larger buffer */
			buf_len = data_size;
		} else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
			dev_info(&pf->pdev->dev,
6531 6532 6533 6534
				 "capability discovery failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, err),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
6535 6536 6537 6538 6539 6540 6541 6542 6543 6544 6545 6546 6547 6548 6549
			return -ENODEV;
		}
	} while (err);

	if (pf->hw.debug_mask & I40E_DEBUG_USER)
		dev_info(&pf->pdev->dev,
			 "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
			 pf->hw.pf_id, pf->hw.func_caps.num_vfs,
			 pf->hw.func_caps.num_msix_vectors,
			 pf->hw.func_caps.num_msix_vectors_vf,
			 pf->hw.func_caps.fd_filters_guaranteed,
			 pf->hw.func_caps.fd_filters_best_effort,
			 pf->hw.func_caps.num_tx_qp,
			 pf->hw.func_caps.num_vsis);

6550 6551 6552 6553 6554 6555 6556 6557 6558
#define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
		       + pf->hw.func_caps.num_vfs)
	if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
		dev_info(&pf->pdev->dev,
			 "got num_vsis %d, setting num_vsis to %d\n",
			 pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
		pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
	}

J
Jesse Brandeburg 已提交
6559 6560 6561
	return 0;
}

6562 6563
static int i40e_vsi_clear(struct i40e_vsi *vsi);

J
Jesse Brandeburg 已提交
6564
/**
6565
 * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
J
Jesse Brandeburg 已提交
6566 6567
 * @pf: board private structure
 **/
6568
static void i40e_fdir_sb_setup(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
6569 6570
{
	struct i40e_vsi *vsi;
6571
	int i;
J
Jesse Brandeburg 已提交
6572

6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583 6584 6585 6586
	/* quick workaround for an NVM issue that leaves a critical register
	 * uninitialized
	 */
	if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
		static const u32 hkey[] = {
			0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
			0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
			0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
			0x95b3a76d};

		for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
			wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
	}

6587
	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
J
Jesse Brandeburg 已提交
6588 6589
		return;

6590
	/* find existing VSI and see if it needs configuring */
J
Jesse Brandeburg 已提交
6591
	vsi = NULL;
M
Mitch Williams 已提交
6592
	for (i = 0; i < pf->num_alloc_vsi; i++) {
6593
		if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
J
Jesse Brandeburg 已提交
6594
			vsi = pf->vsi[i];
6595 6596 6597 6598 6599
			break;
		}
	}

	/* create a new VSI if none exists */
J
Jesse Brandeburg 已提交
6600
	if (!vsi) {
6601 6602
		vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
				     pf->vsi[pf->lan_vsi]->seid, 0);
J
Jesse Brandeburg 已提交
6603 6604
		if (!vsi) {
			dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6605 6606
			pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
			return;
J
Jesse Brandeburg 已提交
6607
		}
6608
	}
J
Jesse Brandeburg 已提交
6609

6610
	i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
J
Jesse Brandeburg 已提交
6611 6612 6613 6614 6615 6616 6617 6618 6619 6620
}

/**
 * i40e_fdir_teardown - release the Flow Director resources
 * @pf: board private structure
 **/
static void i40e_fdir_teardown(struct i40e_pf *pf)
{
	int i;

6621
	i40e_fdir_filter_exit(pf);
M
Mitch Williams 已提交
6622
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
6623 6624 6625 6626 6627 6628 6629 6630
		if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
			i40e_vsi_release(pf->vsi[i]);
			break;
		}
	}
}

/**
A
Anjali Singhai Jain 已提交
6631
 * i40e_prep_for_reset - prep for the core to reset
J
Jesse Brandeburg 已提交
6632 6633
 * @pf: board private structure
 *
6634
 * Close up the VFs and other things in prep for PF Reset.
A
Anjali Singhai Jain 已提交
6635
  **/
S
Shannon Nelson 已提交
6636
static void i40e_prep_for_reset(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
6637 6638
{
	struct i40e_hw *hw = &pf->hw;
6639
	i40e_status ret = 0;
J
Jesse Brandeburg 已提交
6640 6641 6642 6643
	u32 v;

	clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
	if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
S
Shannon Nelson 已提交
6644
		return;
J
Jesse Brandeburg 已提交
6645

J
Jesse Brandeburg 已提交
6646
	dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
J
Jesse Brandeburg 已提交
6647 6648 6649 6650

	/* quiesce the VSIs and their queues that are not already DOWN */
	i40e_pf_quiesce_all_vsi(pf);

M
Mitch Williams 已提交
6651
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
6652 6653 6654 6655 6656 6657
		if (pf->vsi[v])
			pf->vsi[v]->seid = 0;
	}

	i40e_shutdown_adminq(&pf->hw);

A
Anjali Singhai Jain 已提交
6658
	/* call shutdown HMC */
6659 6660
	if (hw->hmc.hmc_obj) {
		ret = i40e_shutdown_lan_hmc(hw);
S
Shannon Nelson 已提交
6661
		if (ret)
6662 6663
			dev_warn(&pf->pdev->dev,
				 "shutdown_lan_hmc failed: %d\n", ret);
A
Anjali Singhai Jain 已提交
6664 6665 6666
	}
}

J
Jesse Brandeburg 已提交
6667 6668 6669 6670 6671 6672 6673 6674 6675 6676 6677 6678
/**
 * i40e_send_version - update firmware with driver version
 * @pf: PF struct
 */
static void i40e_send_version(struct i40e_pf *pf)
{
	struct i40e_driver_version dv;

	dv.major_version = DRV_VERSION_MAJOR;
	dv.minor_version = DRV_VERSION_MINOR;
	dv.build_version = DRV_VERSION_BUILD;
	dv.subbuild_version = 0;
6679
	strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
J
Jesse Brandeburg 已提交
6680 6681 6682
	i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
}

A
Anjali Singhai Jain 已提交
6683
/**
J
Jesse Brandeburg 已提交
6684
 * i40e_reset_and_rebuild - reset and rebuild using a saved config
A
Anjali Singhai Jain 已提交
6685
 * @pf: board private structure
6686
 * @reinit: if the Main VSI needs to re-initialized.
A
Anjali Singhai Jain 已提交
6687
 **/
6688
static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
A
Anjali Singhai Jain 已提交
6689 6690
{
	struct i40e_hw *hw = &pf->hw;
6691
	u8 set_fc_aq_fail = 0;
A
Anjali Singhai Jain 已提交
6692
	i40e_status ret;
6693
	u32 val;
A
Anjali Singhai Jain 已提交
6694 6695
	u32 v;

J
Jesse Brandeburg 已提交
6696 6697 6698 6699 6700
	/* Now we wait for GRST to settle out.
	 * We don't have to delete the VEBs or VSIs from the hw switch
	 * because the reset will make them disappear.
	 */
	ret = i40e_pf_reset(hw);
6701
	if (ret) {
J
Jesse Brandeburg 已提交
6702
		dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6703 6704
		set_bit(__I40E_RESET_FAILED, &pf->state);
		goto clear_recovery;
6705
	}
J
Jesse Brandeburg 已提交
6706 6707 6708
	pf->pfr_count++;

	if (test_bit(__I40E_DOWN, &pf->state))
6709
		goto clear_recovery;
J
Jesse Brandeburg 已提交
6710
	dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
J
Jesse Brandeburg 已提交
6711 6712 6713 6714

	/* rebuild the basics for the AdminQ, HMC, and initial HW switch */
	ret = i40e_init_adminq(&pf->hw);
	if (ret) {
6715 6716 6717
		dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6718
		goto clear_recovery;
J
Jesse Brandeburg 已提交
6719 6720
	}

6721
	/* re-verify the eeprom if we just had an EMP reset */
6722
	if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6723 6724
		i40e_verify_eeprom(pf);

6725
	i40e_clear_pxe_mode(hw);
J
Jesse Brandeburg 已提交
6726
	ret = i40e_get_capabilities(pf);
6727
	if (ret)
J
Jesse Brandeburg 已提交
6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742
		goto end_core_reset;

	ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
				hw->func_caps.num_rx_qp,
				pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
	if (ret) {
		dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
		goto end_core_reset;
	}
	ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
	if (ret) {
		dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
		goto end_core_reset;
	}

N
Neerav Parikh 已提交
6743 6744 6745
#ifdef CONFIG_I40E_DCB
	ret = i40e_init_pf_dcb(pf);
	if (ret) {
6746 6747 6748
		dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
		pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
		/* Continue without DCB enabled */
N
Neerav Parikh 已提交
6749 6750
	}
#endif /* CONFIG_I40E_DCB */
6751
#ifdef I40E_FCOE
6752
	i40e_init_pf_fcoe(pf);
N
Neerav Parikh 已提交
6753

6754
#endif
J
Jesse Brandeburg 已提交
6755
	/* do basic switch setup */
6756
	ret = i40e_setup_pf_switch(pf, reinit);
J
Jesse Brandeburg 已提交
6757 6758 6759
	if (ret)
		goto end_core_reset;

J
Jesse Brandeburg 已提交
6760 6761 6762 6763 6764 6765 6766
	/* driver is only interested in link up/down and module qualification
	 * reports from firmware
	 */
	ret = i40e_aq_set_phy_int_mask(&pf->hw,
				       I40E_AQ_EVENT_LINK_UPDOWN |
				       I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
	if (ret)
6767 6768 6769
		dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
6770

6771 6772 6773
	/* make sure our flow control settings are restored */
	ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
	if (ret)
6774 6775 6776
		dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
			i40e_stat_str(&pf->hw, ret),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6777

J
Jesse Brandeburg 已提交
6778 6779 6780 6781 6782 6783 6784 6785
	/* Rebuild the VSIs and VEBs that existed before reset.
	 * They are still in our local switch element arrays, so only
	 * need to rebuild the switch model in the HW.
	 *
	 * If there were VEBs but the reconstitution failed, we'll try
	 * try to recover minimal use by getting the basic PF VSI working.
	 */
	if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
J
Jesse Brandeburg 已提交
6786
		dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
J
Jesse Brandeburg 已提交
6787 6788 6789 6790 6791 6792 6793 6794 6795 6796 6797 6798 6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821
		/* find the one VEB connected to the MAC, and find orphans */
		for (v = 0; v < I40E_MAX_VEB; v++) {
			if (!pf->veb[v])
				continue;

			if (pf->veb[v]->uplink_seid == pf->mac_seid ||
			    pf->veb[v]->uplink_seid == 0) {
				ret = i40e_reconstitute_veb(pf->veb[v]);

				if (!ret)
					continue;

				/* If Main VEB failed, we're in deep doodoo,
				 * so give up rebuilding the switch and set up
				 * for minimal rebuild of PF VSI.
				 * If orphan failed, we'll report the error
				 * but try to keep going.
				 */
				if (pf->veb[v]->uplink_seid == pf->mac_seid) {
					dev_info(&pf->pdev->dev,
						 "rebuild of switch failed: %d, will try to set up simple PF connection\n",
						 ret);
					pf->vsi[pf->lan_vsi]->uplink_seid
								= pf->mac_seid;
					break;
				} else if (pf->veb[v]->uplink_seid == 0) {
					dev_info(&pf->pdev->dev,
						 "rebuild of orphan VEB failed: %d\n",
						 ret);
				}
			}
		}
	}

	if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
S
Shannon Nelson 已提交
6822
		dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
J
Jesse Brandeburg 已提交
6823 6824 6825 6826 6827 6828 6829 6830 6831
		/* no VEB, so rebuild only the Main VSI */
		ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "rebuild of Main VSI failed: %d\n", ret);
			goto end_core_reset;
		}
	}

6832 6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843 6844 6845
	/* Reconfigure hardware for allowing smaller MSS in the case
	 * of TSO, so that we avoid the MDD being fired and causing
	 * a reset in the case of small MSS+TSO.
	 */
#define I40E_REG_MSS          0x000E64DC
#define I40E_REG_MSS_MIN_MASK 0x3FF0000
#define I40E_64BYTE_MSS       0x400000
	val = rd32(hw, I40E_REG_MSS);
	if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
		val &= ~I40E_REG_MSS_MIN_MASK;
		val |= I40E_64BYTE_MSS;
		wr32(hw, I40E_REG_MSS, val);
	}

6846 6847 6848 6849 6850
	if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
	    (pf->hw.aq.fw_maj_ver < 4)) {
		msleep(75);
		ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
		if (ret)
6851 6852 6853 6854
			dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
6855
	}
J
Jesse Brandeburg 已提交
6856 6857 6858 6859
	/* reinit the misc interrupt */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		ret = i40e_setup_misc_vector(pf);

6860 6861 6862 6863 6864 6865 6866 6867 6868
	/* Add a filter to drop all Flow control frames from any VSI from being
	 * transmitted. By doing so we stop a malicious VF from sending out
	 * PAUSE or PFC frames and potentially controlling traffic for other
	 * PF/VF VSIs.
	 * The FW can still send Flow control frames if enabled.
	 */
	i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
						       pf->main_vsi_seid);

J
Jesse Brandeburg 已提交
6869 6870 6871
	/* restart the VSIs that were rebuilt and running before the reset */
	i40e_pf_unquiesce_all_vsi(pf);

M
Mitch Williams 已提交
6872 6873 6874 6875 6876
	if (pf->num_alloc_vfs) {
		for (v = 0; v < pf->num_alloc_vfs; v++)
			i40e_reset_vf(&pf->vf[v], true);
	}

J
Jesse Brandeburg 已提交
6877
	/* tell the firmware that we're starting */
J
Jesse Brandeburg 已提交
6878
	i40e_send_version(pf);
J
Jesse Brandeburg 已提交
6879 6880

end_core_reset:
6881 6882
	clear_bit(__I40E_RESET_FAILED, &pf->state);
clear_recovery:
J
Jesse Brandeburg 已提交
6883 6884 6885
	clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
}

A
Anjali Singhai Jain 已提交
6886
/**
6887
 * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
A
Anjali Singhai Jain 已提交
6888 6889 6890 6891 6892 6893 6894
 * @pf: board private structure
 *
 * Close up the VFs and other things in prep for a Core Reset,
 * then get ready to rebuild the world.
 **/
static void i40e_handle_reset_warning(struct i40e_pf *pf)
{
S
Shannon Nelson 已提交
6895 6896
	i40e_prep_for_reset(pf);
	i40e_reset_and_rebuild(pf, false);
A
Anjali Singhai Jain 已提交
6897 6898
}

J
Jesse Brandeburg 已提交
6899 6900
/**
 * i40e_handle_mdd_event
6901
 * @pf: pointer to the PF structure
J
Jesse Brandeburg 已提交
6902 6903 6904 6905 6906 6907 6908
 *
 * Called from the MDD irq handler to identify possibly malicious vfs
 **/
static void i40e_handle_mdd_event(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	bool mdd_detected = false;
6909
	bool pf_mdd_detected = false;
J
Jesse Brandeburg 已提交
6910 6911 6912 6913 6914 6915 6916 6917 6918 6919
	struct i40e_vf *vf;
	u32 reg;
	int i;

	if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
		return;

	/* find what triggered the MDD event */
	reg = rd32(hw, I40E_GL_MDET_TX);
	if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6920 6921
		u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
				I40E_GL_MDET_TX_PF_NUM_SHIFT;
6922
		u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6923
				I40E_GL_MDET_TX_VF_NUM_SHIFT;
6924
		u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6925
				I40E_GL_MDET_TX_EVENT_SHIFT;
6926 6927 6928
		u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
				I40E_GL_MDET_TX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
6929
		if (netif_msg_tx_err(pf))
6930
			dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6931
				 event, queue, pf_num, vf_num);
J
Jesse Brandeburg 已提交
6932 6933 6934 6935 6936
		wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
		mdd_detected = true;
	}
	reg = rd32(hw, I40E_GL_MDET_RX);
	if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6937 6938
		u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
				I40E_GL_MDET_RX_FUNCTION_SHIFT;
6939
		u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6940
				I40E_GL_MDET_RX_EVENT_SHIFT;
6941 6942 6943
		u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
				I40E_GL_MDET_RX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
6944 6945 6946
		if (netif_msg_rx_err(pf))
			dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
				 event, queue, func);
J
Jesse Brandeburg 已提交
6947 6948 6949 6950
		wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
		mdd_detected = true;
	}

6951 6952 6953 6954
	if (mdd_detected) {
		reg = rd32(hw, I40E_PF_MDET_TX);
		if (reg & I40E_PF_MDET_TX_VALID_MASK) {
			wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6955
			dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6956 6957 6958 6959 6960
			pf_mdd_detected = true;
		}
		reg = rd32(hw, I40E_PF_MDET_RX);
		if (reg & I40E_PF_MDET_RX_VALID_MASK) {
			wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6961
			dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6962 6963 6964 6965 6966 6967 6968 6969 6970
			pf_mdd_detected = true;
		}
		/* Queue belongs to the PF, initiate a reset */
		if (pf_mdd_detected) {
			set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
			i40e_service_event_schedule(pf);
		}
	}

J
Jesse Brandeburg 已提交
6971 6972 6973 6974 6975 6976 6977
	/* see if one of the VFs needs its hand slapped */
	for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
		vf = &(pf->vf[i]);
		reg = rd32(hw, I40E_VP_MDET_TX(i));
		if (reg & I40E_VP_MDET_TX_VALID_MASK) {
			wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
			vf->num_mdd_events++;
6978 6979
			dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
				 i);
J
Jesse Brandeburg 已提交
6980 6981 6982 6983 6984 6985
		}

		reg = rd32(hw, I40E_VP_MDET_RX(i));
		if (reg & I40E_VP_MDET_RX_VALID_MASK) {
			wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
			vf->num_mdd_events++;
6986 6987
			dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
				 i);
J
Jesse Brandeburg 已提交
6988 6989 6990 6991 6992 6993 6994 6995 6996 6997 6998 6999 7000 7001 7002 7003 7004 7005 7006
		}

		if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
			dev_info(&pf->pdev->dev,
				 "Too many MDD events on VF %d, disabled\n", i);
			dev_info(&pf->pdev->dev,
				 "Use PF Control I/F to re-enable the VF\n");
			set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
		}
	}

	/* re-enable mdd interrupt cause */
	clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
	reg = rd32(hw, I40E_PFINT_ICR0_ENA);
	reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
	wr32(hw, I40E_PFINT_ICR0_ENA, reg);
	i40e_flush(hw);
}

7007 7008 7009 7010 7011 7012 7013 7014 7015 7016 7017 7018 7019 7020 7021 7022 7023 7024
#ifdef CONFIG_I40E_VXLAN
/**
 * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
 * @pf: board private structure
 **/
static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	i40e_status ret;
	__be16 port;
	int i;

	if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
		return;

	pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;

	for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7025 7026
		if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
			pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7027
			port = pf->vxlan_ports[i];
S
Shannon Nelson 已提交
7028 7029
			if (port)
				ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7030
						     I40E_AQC_TUNNEL_TYPE_VXLAN,
S
Shannon Nelson 已提交
7031 7032 7033
						     NULL, NULL);
			else
				ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7034 7035

			if (ret) {
S
Shannon Nelson 已提交
7036
				dev_info(&pf->pdev->dev,
7037
					 "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
S
Shannon Nelson 已提交
7038
					 port ? "add" : "delete",
7039 7040 7041 7042
					 ntohs(port), i,
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						    pf->hw.aq.asq_last_status));
7043 7044 7045 7046 7047 7048 7049
				pf->vxlan_ports[i] = 0;
			}
		}
	}
}

#endif
J
Jesse Brandeburg 已提交
7050 7051 7052 7053 7054 7055 7056 7057 7058 7059 7060
/**
 * i40e_service_task - Run the driver's async subtasks
 * @work: pointer to work_struct containing our data
 **/
static void i40e_service_task(struct work_struct *work)
{
	struct i40e_pf *pf = container_of(work,
					  struct i40e_pf,
					  service_task);
	unsigned long start_time = jiffies;

7061 7062 7063 7064 7065 7066
	/* don't bother with service tasks if a reset is in progress */
	if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
		i40e_service_event_complete(pf);
		return;
	}

7067
	i40e_detect_recover_hung(pf);
J
Jesse Brandeburg 已提交
7068 7069 7070 7071 7072 7073
	i40e_reset_subtask(pf);
	i40e_handle_mdd_event(pf);
	i40e_vc_process_vflr_event(pf);
	i40e_watchdog_subtask(pf);
	i40e_fdir_reinit_subtask(pf);
	i40e_sync_filters_subtask(pf);
7074 7075 7076
#ifdef CONFIG_I40E_VXLAN
	i40e_sync_vxlan_filters_subtask(pf);
#endif
J
Jesse Brandeburg 已提交
7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092 7093 7094 7095 7096 7097 7098 7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118 7119 7120 7121 7122 7123 7124 7125 7126 7127 7128 7129 7130 7131 7132 7133 7134 7135 7136 7137 7138 7139 7140 7141 7142 7143 7144
	i40e_clean_adminq_subtask(pf);

	i40e_service_event_complete(pf);

	/* If the tasks have taken longer than one timer cycle or there
	 * is more work to be done, reschedule the service task now
	 * rather than wait for the timer to tick again.
	 */
	if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
	    test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)		 ||
	    test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)		 ||
	    test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
		i40e_service_event_schedule(pf);
}

/**
 * i40e_service_timer - timer callback
 * @data: pointer to PF struct
 **/
static void i40e_service_timer(unsigned long data)
{
	struct i40e_pf *pf = (struct i40e_pf *)data;

	mod_timer(&pf->service_timer,
		  round_jiffies(jiffies + pf->service_timer_period));
	i40e_service_event_schedule(pf);
}

/**
 * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
 * @vsi: the VSI being configured
 **/
static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;

	switch (vsi->type) {
	case I40E_VSI_MAIN:
		vsi->alloc_queue_pairs = pf->num_lan_qps;
		vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
				      I40E_REQ_DESCRIPTOR_MULTIPLE);
		if (pf->flags & I40E_FLAG_MSIX_ENABLED)
			vsi->num_q_vectors = pf->num_lan_msix;
		else
			vsi->num_q_vectors = 1;

		break;

	case I40E_VSI_FDIR:
		vsi->alloc_queue_pairs = 1;
		vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
				      I40E_REQ_DESCRIPTOR_MULTIPLE);
		vsi->num_q_vectors = 1;
		break;

	case I40E_VSI_VMDQ2:
		vsi->alloc_queue_pairs = pf->num_vmdq_qps;
		vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
				      I40E_REQ_DESCRIPTOR_MULTIPLE);
		vsi->num_q_vectors = pf->num_vmdq_msix;
		break;

	case I40E_VSI_SRIOV:
		vsi->alloc_queue_pairs = pf->num_vf_qps;
		vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
				      I40E_REQ_DESCRIPTOR_MULTIPLE);
		break;

7145 7146 7147 7148 7149 7150 7151 7152 7153
#ifdef I40E_FCOE
	case I40E_VSI_FCOE:
		vsi->alloc_queue_pairs = pf->num_fcoe_qps;
		vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
				      I40E_REQ_DESCRIPTOR_MULTIPLE);
		vsi->num_q_vectors = pf->num_fcoe_msix;
		break;

#endif /* I40E_FCOE */
J
Jesse Brandeburg 已提交
7154 7155 7156 7157 7158 7159 7160 7161
	default:
		WARN_ON(1);
		return -ENODATA;
	}

	return 0;
}

A
Anjali Singhai Jain 已提交
7162 7163 7164
/**
 * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
 * @type: VSI pointer
7165
 * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
A
Anjali Singhai Jain 已提交
7166 7167 7168 7169
 *
 * On error: returns error code (negative)
 * On success: returns 0
 **/
7170
static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
A
Anjali Singhai Jain 已提交
7171 7172 7173 7174
{
	int size;
	int ret = 0;

7175
	/* allocate memory for both Tx and Rx ring pointers */
A
Anjali Singhai Jain 已提交
7176 7177 7178 7179 7180 7181
	size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
	vsi->tx_rings = kzalloc(size, GFP_KERNEL);
	if (!vsi->tx_rings)
		return -ENOMEM;
	vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];

7182 7183
	if (alloc_qvectors) {
		/* allocate memory for q_vector pointers */
7184
		size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7185 7186 7187 7188 7189
		vsi->q_vectors = kzalloc(size, GFP_KERNEL);
		if (!vsi->q_vectors) {
			ret = -ENOMEM;
			goto err_vectors;
		}
A
Anjali Singhai Jain 已提交
7190 7191 7192 7193 7194 7195 7196 7197
	}
	return ret;

err_vectors:
	kfree(vsi->tx_rings);
	return ret;
}

J
Jesse Brandeburg 已提交
7198 7199 7200 7201 7202 7203 7204 7205 7206 7207 7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220 7221 7222
/**
 * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
 * @pf: board private structure
 * @type: type of VSI
 *
 * On error: returns error code (negative)
 * On success: returns vsi index in PF (positive)
 **/
static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
{
	int ret = -ENODEV;
	struct i40e_vsi *vsi;
	int vsi_idx;
	int i;

	/* Need to protect the allocation of the VSIs at the PF level */
	mutex_lock(&pf->switch_mutex);

	/* VSI list may be fragmented if VSI creation/destruction has
	 * been happening.  We can afford to do a quick scan to look
	 * for any free VSIs in the list.
	 *
	 * find next empty vsi slot, looping back around if necessary
	 */
	i = pf->next_vsi;
M
Mitch Williams 已提交
7223
	while (i < pf->num_alloc_vsi && pf->vsi[i])
J
Jesse Brandeburg 已提交
7224
		i++;
M
Mitch Williams 已提交
7225
	if (i >= pf->num_alloc_vsi) {
J
Jesse Brandeburg 已提交
7226 7227 7228 7229 7230
		i = 0;
		while (i < pf->next_vsi && pf->vsi[i])
			i++;
	}

M
Mitch Williams 已提交
7231
	if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
J
Jesse Brandeburg 已提交
7232 7233 7234
		vsi_idx = i;             /* Found one! */
	} else {
		ret = -ENODEV;
7235
		goto unlock_pf;  /* out of VSI slots! */
J
Jesse Brandeburg 已提交
7236 7237 7238 7239 7240 7241
	}
	pf->next_vsi = ++i;

	vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
	if (!vsi) {
		ret = -ENOMEM;
7242
		goto unlock_pf;
J
Jesse Brandeburg 已提交
7243 7244 7245 7246 7247 7248 7249 7250
	}
	vsi->type = type;
	vsi->back = pf;
	set_bit(__I40E_DOWN, &vsi->state);
	vsi->flags = 0;
	vsi->idx = vsi_idx;
	vsi->rx_itr_setting = pf->rx_itr_default;
	vsi->tx_itr_setting = pf->tx_itr_default;
7251
	vsi->int_rate_limit = 0;
7252 7253
	vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
				pf->rss_table_size : 64;
J
Jesse Brandeburg 已提交
7254 7255 7256
	vsi->netdev_registered = false;
	vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
	INIT_LIST_HEAD(&vsi->mac_filter_list);
7257
	vsi->irqs_ready = false;
J
Jesse Brandeburg 已提交
7258

7259 7260 7261 7262
	ret = i40e_set_num_rings_in_vsi(vsi);
	if (ret)
		goto err_rings;

7263
	ret = i40e_vsi_alloc_arrays(vsi, true);
A
Anjali Singhai Jain 已提交
7264
	if (ret)
7265
		goto err_rings;
7266

J
Jesse Brandeburg 已提交
7267 7268 7269
	/* Setup default MSIX irq handler for VSI */
	i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);

K
Kiran Patil 已提交
7270 7271
	/* Initialize VSI lock */
	spin_lock_init(&vsi->mac_filter_list_lock);
J
Jesse Brandeburg 已提交
7272 7273
	pf->vsi[vsi_idx] = vsi;
	ret = vsi_idx;
7274 7275
	goto unlock_pf;

7276
err_rings:
7277 7278 7279
	pf->next_vsi = i - 1;
	kfree(vsi);
unlock_pf:
J
Jesse Brandeburg 已提交
7280 7281 7282 7283
	mutex_unlock(&pf->switch_mutex);
	return ret;
}

A
Anjali Singhai Jain 已提交
7284 7285 7286
/**
 * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
 * @type: VSI pointer
7287
 * @free_qvectors: a bool to specify if q_vectors need to be freed.
A
Anjali Singhai Jain 已提交
7288 7289 7290 7291
 *
 * On error: returns error code (negative)
 * On success: returns 0
 **/
7292
static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
A
Anjali Singhai Jain 已提交
7293 7294
{
	/* free the ring and vector containers */
7295 7296 7297 7298
	if (free_qvectors) {
		kfree(vsi->q_vectors);
		vsi->q_vectors = NULL;
	}
A
Anjali Singhai Jain 已提交
7299 7300 7301 7302 7303
	kfree(vsi->tx_rings);
	vsi->tx_rings = NULL;
	vsi->rx_rings = NULL;
}

7304 7305 7306 7307 7308 7309 7310 7311 7312 7313 7314 7315 7316 7317 7318 7319 7320
/**
 * i40e_clear_rss_config_user - clear the user configured RSS hash keys
 * and lookup table
 * @vsi: Pointer to VSI structure
 */
static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
{
	if (!vsi)
		return;

	kfree(vsi->rss_hkey_user);
	vsi->rss_hkey_user = NULL;

	kfree(vsi->rss_lut_user);
	vsi->rss_lut_user = NULL;
}

J
Jesse Brandeburg 已提交
7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332 7333 7334 7335 7336 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352
/**
 * i40e_vsi_clear - Deallocate the VSI provided
 * @vsi: the VSI being un-configured
 **/
static int i40e_vsi_clear(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf;

	if (!vsi)
		return 0;

	if (!vsi->back)
		goto free_vsi;
	pf = vsi->back;

	mutex_lock(&pf->switch_mutex);
	if (!pf->vsi[vsi->idx]) {
		dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
			vsi->idx, vsi->idx, vsi, vsi->type);
		goto unlock_vsi;
	}

	if (pf->vsi[vsi->idx] != vsi) {
		dev_err(&pf->pdev->dev,
			"pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
			pf->vsi[vsi->idx]->idx,
			pf->vsi[vsi->idx],
			pf->vsi[vsi->idx]->type,
			vsi->idx, vsi, vsi->type);
		goto unlock_vsi;
	}

7353
	/* updates the PF for this cleared vsi */
J
Jesse Brandeburg 已提交
7354 7355 7356
	i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
	i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);

7357
	i40e_vsi_free_arrays(vsi, true);
7358
	i40e_clear_rss_config_user(vsi);
7359

J
Jesse Brandeburg 已提交
7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370 7371
	pf->vsi[vsi->idx] = NULL;
	if (vsi->idx < pf->next_vsi)
		pf->next_vsi = vsi->idx;

unlock_vsi:
	mutex_unlock(&pf->switch_mutex);
free_vsi:
	kfree(vsi);

	return 0;
}

7372 7373 7374 7375
/**
 * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
 * @vsi: the VSI being cleaned
 **/
7376
static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7377 7378 7379
{
	int i;

7380
	if (vsi->tx_rings && vsi->tx_rings[0]) {
N
Neerav Parikh 已提交
7381
		for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7382 7383 7384 7385
			kfree_rcu(vsi->tx_rings[i], rcu);
			vsi->tx_rings[i] = NULL;
			vsi->rx_rings[i] = NULL;
		}
7386
	}
7387 7388
}

J
Jesse Brandeburg 已提交
7389 7390 7391 7392 7393 7394
/**
 * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
 * @vsi: the VSI being configured
 **/
static int i40e_alloc_rings(struct i40e_vsi *vsi)
{
7395
	struct i40e_ring *tx_ring, *rx_ring;
J
Jesse Brandeburg 已提交
7396 7397 7398 7399
	struct i40e_pf *pf = vsi->back;
	int i;

	/* Set basic values in the rings to be used later during open() */
N
Neerav Parikh 已提交
7400
	for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7401
		/* allocate space for both Tx and Rx in one shot */
7402 7403 7404
		tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
		if (!tx_ring)
			goto err_out;
J
Jesse Brandeburg 已提交
7405 7406 7407 7408 7409 7410 7411 7412 7413 7414

		tx_ring->queue_index = i;
		tx_ring->reg_idx = vsi->base_queue + i;
		tx_ring->ring_active = false;
		tx_ring->vsi = vsi;
		tx_ring->netdev = vsi->netdev;
		tx_ring->dev = &pf->pdev->dev;
		tx_ring->count = vsi->num_desc;
		tx_ring->size = 0;
		tx_ring->dcb_tc = 0;
7415 7416
		if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
			tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7417 7418
		if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
			tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7419
		vsi->tx_rings[i] = tx_ring;
J
Jesse Brandeburg 已提交
7420

7421
		rx_ring = &tx_ring[1];
J
Jesse Brandeburg 已提交
7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434
		rx_ring->queue_index = i;
		rx_ring->reg_idx = vsi->base_queue + i;
		rx_ring->ring_active = false;
		rx_ring->vsi = vsi;
		rx_ring->netdev = vsi->netdev;
		rx_ring->dev = &pf->pdev->dev;
		rx_ring->count = vsi->num_desc;
		rx_ring->size = 0;
		rx_ring->dcb_tc = 0;
		if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
			set_ring_16byte_desc_enabled(rx_ring);
		else
			clear_ring_16byte_desc_enabled(rx_ring);
7435
		vsi->rx_rings[i] = rx_ring;
J
Jesse Brandeburg 已提交
7436 7437 7438
	}

	return 0;
7439 7440 7441 7442

err_out:
	i40e_vsi_clear_rings(vsi);
	return -ENOMEM;
J
Jesse Brandeburg 已提交
7443 7444 7445 7446 7447 7448 7449 7450 7451 7452 7453
}

/**
 * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
 * @pf: board private structure
 * @vectors: the number of MSI-X vectors to request
 *
 * Returns the number of vectors reserved, or error
 **/
static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
{
7454 7455 7456
	vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
					I40E_MIN_MSIX, vectors);
	if (vectors < 0) {
J
Jesse Brandeburg 已提交
7457
		dev_info(&pf->pdev->dev,
7458
			 "MSI-X vector reservation failed: %d\n", vectors);
J
Jesse Brandeburg 已提交
7459 7460 7461 7462 7463 7464 7465 7466 7467 7468 7469 7470
		vectors = 0;
	}

	return vectors;
}

/**
 * i40e_init_msix - Setup the MSIX capability
 * @pf: board private structure
 *
 * Work with the OS to set up the MSIX vectors needed.
 *
7471
 * Returns the number of vectors reserved or negative on failure
J
Jesse Brandeburg 已提交
7472 7473 7474 7475
 **/
static int i40e_init_msix(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
S
Shannon Nelson 已提交
7476
	int vectors_left;
J
Jesse Brandeburg 已提交
7477
	int v_budget, i;
7478
	int v_actual;
J
Jesse Brandeburg 已提交
7479 7480 7481 7482 7483 7484 7485

	if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
		return -ENODEV;

	/* The number of vectors we'll request will be comprised of:
	 *   - Add 1 for "other" cause for Admin Queue events, etc.
	 *   - The number of LAN queue pairs
7486 7487 7488 7489 7490
	 *	- Queues being used for RSS.
	 *		We don't need as many as max_rss_size vectors.
	 *		use rss_size instead in the calculation since that
	 *		is governed by number of cpus in the system.
	 *	- assumes symmetric Tx/Rx pairing
J
Jesse Brandeburg 已提交
7491
	 *   - The number of VMDq pairs
7492 7493 7494
#ifdef I40E_FCOE
	 *   - The number of FCOE qps.
#endif
J
Jesse Brandeburg 已提交
7495 7496 7497 7498 7499
	 * Once we count this up, try the request.
	 *
	 * If we can't get what we want, we'll simplify to nearly nothing
	 * and try again.  If that still fails, we punt.
	 */
S
Shannon Nelson 已提交
7500 7501 7502 7503 7504 7505 7506 7507 7508 7509 7510 7511 7512 7513 7514 7515 7516 7517 7518 7519 7520 7521 7522
	vectors_left = hw->func_caps.num_msix_vectors;
	v_budget = 0;

	/* reserve one vector for miscellaneous handler */
	if (vectors_left) {
		v_budget++;
		vectors_left--;
	}

	/* reserve vectors for the main PF traffic queues */
	pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
	vectors_left -= pf->num_lan_msix;
	v_budget += pf->num_lan_msix;

	/* reserve one vector for sideband flow director */
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
		if (vectors_left) {
			v_budget++;
			vectors_left--;
		} else {
			pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
		}
	}
7523

7524
#ifdef I40E_FCOE
S
Shannon Nelson 已提交
7525
	/* can we reserve enough for FCoE? */
7526
	if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
S
Shannon Nelson 已提交
7527 7528 7529 7530 7531 7532
		if (!vectors_left)
			pf->num_fcoe_msix = 0;
		else if (vectors_left >= pf->num_fcoe_qps)
			pf->num_fcoe_msix = pf->num_fcoe_qps;
		else
			pf->num_fcoe_msix = 1;
7533
		v_budget += pf->num_fcoe_msix;
S
Shannon Nelson 已提交
7534
		vectors_left -= pf->num_fcoe_msix;
7535
	}
S
Shannon Nelson 已提交
7536

7537
#endif
S
Shannon Nelson 已提交
7538 7539 7540 7541 7542 7543 7544 7545 7546 7547 7548 7549 7550 7551 7552 7553 7554 7555
	/* any vectors left over go for VMDq support */
	if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
		int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
		int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);

		/* if we're short on vectors for what's desired, we limit
		 * the queues per vmdq.  If this is still more than are
		 * available, the user will need to change the number of
		 * queues/vectors used by the PF later with the ethtool
		 * channels command
		 */
		if (vmdq_vecs < vmdq_vecs_wanted)
			pf->num_vmdq_qps = 1;
		pf->num_vmdq_msix = pf->num_vmdq_qps;

		v_budget += vmdq_vecs;
		vectors_left -= vmdq_vecs;
	}
J
Jesse Brandeburg 已提交
7556 7557 7558 7559 7560 7561 7562 7563

	pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
				   GFP_KERNEL);
	if (!pf->msix_entries)
		return -ENOMEM;

	for (i = 0; i < v_budget; i++)
		pf->msix_entries[i].entry = i;
7564
	v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7565

7566
	if (v_actual != v_budget) {
7567 7568 7569 7570 7571
		/* If we have limited resources, we will start with no vectors
		 * for the special features and then allocate vectors to some
		 * of these features based on the policy and at the end disable
		 * the features that did not get any vectors.
		 */
7572 7573 7574 7575
#ifdef I40E_FCOE
		pf->num_fcoe_qps = 0;
		pf->num_fcoe_msix = 0;
#endif
7576 7577 7578
		pf->num_vmdq_msix = 0;
	}

7579
	if (v_actual < I40E_MIN_MSIX) {
J
Jesse Brandeburg 已提交
7580 7581 7582 7583 7584
		pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
		kfree(pf->msix_entries);
		pf->msix_entries = NULL;
		return -ENODEV;

7585
	} else if (v_actual == I40E_MIN_MSIX) {
J
Jesse Brandeburg 已提交
7586 7587 7588 7589 7590 7591
		/* Adjust for minimal MSIX use */
		pf->num_vmdq_vsis = 0;
		pf->num_vmdq_qps = 0;
		pf->num_lan_qps = 1;
		pf->num_lan_msix = 1;

7592 7593 7594
	} else if (v_actual != v_budget) {
		int vec;

7595
		/* reserve the misc vector */
7596
		vec = v_actual - 1;
7597

J
Jesse Brandeburg 已提交
7598 7599
		/* Scale vector usage down */
		pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7600
		pf->num_vmdq_vsis = 1;
S
Shannon Nelson 已提交
7601 7602
		pf->num_vmdq_qps = 1;
		pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
J
Jesse Brandeburg 已提交
7603 7604 7605 7606 7607 7608 7609

		/* partition out the remaining vectors */
		switch (vec) {
		case 2:
			pf->num_lan_msix = 1;
			break;
		case 3:
7610 7611 7612 7613 7614 7615 7616
#ifdef I40E_FCOE
			/* give one vector to FCoE */
			if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
				pf->num_lan_msix = 1;
				pf->num_fcoe_msix = 1;
			}
#else
J
Jesse Brandeburg 已提交
7617
			pf->num_lan_msix = 2;
7618
#endif
J
Jesse Brandeburg 已提交
7619 7620
			break;
		default:
7621 7622 7623 7624 7625 7626 7627
#ifdef I40E_FCOE
			/* give one vector to FCoE */
			if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
				pf->num_fcoe_msix = 1;
				vec--;
			}
#endif
S
Shannon Nelson 已提交
7628 7629
			/* give the rest to the PF */
			pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
J
Jesse Brandeburg 已提交
7630 7631 7632 7633
			break;
		}
	}

7634 7635 7636 7637 7638
	if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
	    (pf->num_vmdq_msix == 0)) {
		dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
		pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
	}
7639 7640 7641 7642 7643 7644 7645
#ifdef I40E_FCOE

	if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
		dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
		pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
	}
#endif
7646
	return v_actual;
J
Jesse Brandeburg 已提交
7647 7648
}

7649
/**
7650
 * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7651 7652 7653 7654 7655
 * @vsi: the VSI being configured
 * @v_idx: index of the vector in the vsi struct
 *
 * We allocate one q_vector.  If allocation fails we return -ENOMEM.
 **/
7656
static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7657 7658 7659 7660 7661 7662 7663 7664 7665 7666 7667 7668 7669
{
	struct i40e_q_vector *q_vector;

	/* allocate q_vector */
	q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
	if (!q_vector)
		return -ENOMEM;

	q_vector->vsi = vsi;
	q_vector->v_idx = v_idx;
	cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
	if (vsi->netdev)
		netif_napi_add(vsi->netdev, &q_vector->napi,
J
Jesse Brandeburg 已提交
7670
			       i40e_napi_poll, NAPI_POLL_WEIGHT);
7671

7672 7673 7674
	q_vector->rx.latency_range = I40E_LOW_LATENCY;
	q_vector->tx.latency_range = I40E_LOW_LATENCY;

7675 7676 7677 7678 7679 7680
	/* tie q_vector and vsi together */
	vsi->q_vectors[v_idx] = q_vector;

	return 0;
}

J
Jesse Brandeburg 已提交
7681
/**
7682
 * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
J
Jesse Brandeburg 已提交
7683 7684 7685 7686 7687
 * @vsi: the VSI being configured
 *
 * We allocate one q_vector per queue interrupt.  If allocation fails we
 * return -ENOMEM.
 **/
7688
static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
J
Jesse Brandeburg 已提交
7689 7690 7691
{
	struct i40e_pf *pf = vsi->back;
	int v_idx, num_q_vectors;
7692
	int err;
J
Jesse Brandeburg 已提交
7693 7694 7695 7696 7697 7698 7699 7700 7701 7702

	/* if not MSIX, give the one vector only to the LAN VSI */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		num_q_vectors = vsi->num_q_vectors;
	else if (vsi == pf->vsi[pf->lan_vsi])
		num_q_vectors = 1;
	else
		return -EINVAL;

	for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7703
		err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7704 7705
		if (err)
			goto err_out;
J
Jesse Brandeburg 已提交
7706 7707 7708
	}

	return 0;
7709 7710 7711 7712 7713 7714

err_out:
	while (v_idx--)
		i40e_free_q_vector(vsi, v_idx);

	return err;
J
Jesse Brandeburg 已提交
7715 7716 7717 7718 7719 7720
}

/**
 * i40e_init_interrupt_scheme - Determine proper interrupt scheme
 * @pf: board private structure to initialize
 **/
7721
static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
7722
{
7723 7724
	int vectors = 0;
	ssize_t size;
J
Jesse Brandeburg 已提交
7725 7726

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7727 7728
		vectors = i40e_init_msix(pf);
		if (vectors < 0) {
J
Jesse Brandeburg 已提交
7729
			pf->flags &= ~(I40E_FLAG_MSIX_ENABLED	|
7730 7731 7732
#ifdef I40E_FCOE
				       I40E_FLAG_FCOE_ENABLED	|
#endif
J
Jesse Brandeburg 已提交
7733
				       I40E_FLAG_RSS_ENABLED	|
7734
				       I40E_FLAG_DCB_CAPABLE	|
J
Jesse Brandeburg 已提交
7735 7736 7737 7738
				       I40E_FLAG_SRIOV_ENABLED	|
				       I40E_FLAG_FD_SB_ENABLED	|
				       I40E_FLAG_FD_ATR_ENABLED	|
				       I40E_FLAG_VMDQ_ENABLED);
J
Jesse Brandeburg 已提交
7739 7740 7741 7742 7743 7744 7745 7746

			/* rework the queue expectations without MSIX */
			i40e_determine_queue_usage(pf);
		}
	}

	if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
	    (pf->flags & I40E_FLAG_MSI_ENABLED)) {
C
Catherine Sullivan 已提交
7747
		dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7748 7749 7750 7751
		vectors = pci_enable_msi(pf->pdev);
		if (vectors < 0) {
			dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
				 vectors);
J
Jesse Brandeburg 已提交
7752 7753
			pf->flags &= ~I40E_FLAG_MSI_ENABLED;
		}
7754
		vectors = 1;  /* one MSI or Legacy vector */
J
Jesse Brandeburg 已提交
7755 7756
	}

7757
	if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
C
Catherine Sullivan 已提交
7758
		dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7759

7760 7761 7762
	/* set up vector assignment tracking */
	size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
	pf->irq_pile = kzalloc(size, GFP_KERNEL);
7763 7764 7765 7766
	if (!pf->irq_pile) {
		dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
		return -ENOMEM;
	}
7767 7768 7769
	pf->irq_pile->num_entries = vectors;
	pf->irq_pile->search_hint = 0;

7770
	/* track first vector for misc interrupts, ignore return */
7771
	(void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7772 7773

	return 0;
J
Jesse Brandeburg 已提交
7774 7775 7776 7777 7778 7779 7780 7781 7782 7783 7784 7785 7786 7787 7788 7789 7790 7791 7792 7793
}

/**
 * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
 * @pf: board private structure
 *
 * This sets up the handler for MSIX 0, which is used to manage the
 * non-queue interrupts, e.g. AdminQ and errors.  This is not used
 * when in MSI or Legacy interrupt mode.
 **/
static int i40e_setup_misc_vector(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	int err = 0;

	/* Only request the irq if this is the first time through, and
	 * not when we're rebuilding after a Reset
	 */
	if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
		err = request_irq(pf->msix_entries[0].vector,
7794
				  i40e_intr, 0, pf->int_name, pf);
J
Jesse Brandeburg 已提交
7795 7796
		if (err) {
			dev_info(&pf->pdev->dev,
C
Catherine Sullivan 已提交
7797
				 "request_irq for %s failed: %d\n",
7798
				 pf->int_name, err);
J
Jesse Brandeburg 已提交
7799 7800 7801 7802
			return -EFAULT;
		}
	}

7803
	i40e_enable_misc_int_causes(pf);
J
Jesse Brandeburg 已提交
7804 7805 7806 7807 7808 7809 7810 7811 7812 7813 7814 7815 7816

	/* associate no queues to the misc vector */
	wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
	wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);

	i40e_flush(hw);

	i40e_irq_dynamic_enable_icr0(pf);

	return err;
}

/**
7817 7818 7819 7820
 * i40e_config_rss_aq - Prepare for RSS using AQ commands
 * @vsi: vsi structure
 * @seed: RSS hash seed
 **/
7821 7822
static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
			      u8 *lut, u16 lut_size)
7823 7824 7825 7826 7827 7828 7829 7830 7831 7832 7833 7834 7835 7836 7837 7838 7839 7840 7841 7842 7843 7844 7845 7846 7847
{
	struct i40e_aqc_get_set_rss_key_data rss_key;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	bool pf_lut = false;
	u8 *rss_lut;
	int ret, i;

	memset(&rss_key, 0, sizeof(rss_key));
	memcpy(&rss_key, seed, sizeof(rss_key));

	rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
	if (!rss_lut)
		return -ENOMEM;

	/* Populate the LUT with max no. of queues in round robin fashion */
	for (i = 0; i < vsi->rss_table_size; i++)
		rss_lut[i] = i % vsi->rss_size;

	ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "Cannot set RSS key, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7848
		goto config_rss_aq_out;
7849 7850 7851 7852 7853 7854 7855 7856 7857 7858 7859 7860 7861
	}

	if (vsi->type == I40E_VSI_MAIN)
		pf_lut = true;

	ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
				  vsi->rss_table_size);
	if (ret)
		dev_info(&pf->pdev->dev,
			 "Cannot set RSS lut, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));

7862 7863
config_rss_aq_out:
	kfree(rss_lut);
7864 7865 7866 7867 7868 7869 7870 7871 7872 7873 7874
	return ret;
}

/**
 * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
 * @vsi: VSI structure
 **/
static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
{
	u8 seed[I40E_HKEY_ARRAY_SIZE];
	struct i40e_pf *pf = vsi->back;
7875 7876 7877 7878 7879 7880 7881 7882 7883
	u8 *lut;
	int ret;

	if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
		return 0;

	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
	if (!lut)
		return -ENOMEM;
7884

7885
	i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7886
	netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7887
	vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7888 7889
	ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
	kfree(lut);
7890

7891
	return ret;
7892 7893 7894
}

/**
7895
 * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
7896
 * @vsi: Pointer to vsi structure
7897
 * @seed: RSS hash seed
7898 7899 7900 7901
 * @lut: Lookup table
 * @lut_size: Lookup table size
 *
 * Returns 0 on success, negative on failure
J
Jesse Brandeburg 已提交
7902
 **/
7903 7904
static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
			       const u8 *lut, u16 lut_size)
J
Jesse Brandeburg 已提交
7905
{
7906
	struct i40e_pf *pf = vsi->back;
7907
	struct i40e_hw *hw = &pf->hw;
7908
	u8 i;
J
Jesse Brandeburg 已提交
7909

7910
	/* Fill out hash function seed */
7911 7912 7913 7914 7915 7916 7917 7918 7919 7920 7921 7922 7923 7924 7925
	if (seed) {
		u32 *seed_dw = (u32 *)seed;

		for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
			wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
	}

	if (lut) {
		u32 *lut_dw = (u32 *)lut;

		if (lut_size != I40E_HLUT_ARRAY_SIZE)
			return -EINVAL;

		for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
			wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
7926 7927 7928 7929 7930 7931
	}
	i40e_flush(hw);

	return 0;
}

7932 7933 7934 7935 7936 7937 7938 7939 7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953 7954 7955 7956 7957 7958 7959 7960 7961 7962 7963 7964 7965 7966 7967 7968 7969 7970 7971 7972 7973 7974 7975 7976 7977 7978 7979 7980 7981 7982 7983 7984 7985 7986 7987 7988 7989 7990 7991 7992 7993 7994 7995 7996 7997 7998
/**
 * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
 * @vsi: Pointer to VSI structure
 * @seed: Buffer to store the keys
 * @lut: Buffer to store the lookup table entries
 * @lut_size: Size of buffer to store the lookup table entries
 *
 * Returns 0 on success, negative on failure
 */
static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
			    u8 *lut, u16 lut_size)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u16 i;

	if (seed) {
		u32 *seed_dw = (u32 *)seed;

		for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
			seed_dw[i] = rd32(hw, I40E_PFQF_HKEY(i));
	}
	if (lut) {
		u32 *lut_dw = (u32 *)lut;

		if (lut_size != I40E_HLUT_ARRAY_SIZE)
			return -EINVAL;
		for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
			lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
	}

	return 0;
}

/**
 * i40e_config_rss - Configure RSS keys and lut
 * @vsi: Pointer to VSI structure
 * @seed: RSS hash seed
 * @lut: Lookup table
 * @lut_size: Lookup table size
 *
 * Returns 0 on success, negative on failure
 */
int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
	struct i40e_pf *pf = vsi->back;

	if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
		return i40e_config_rss_aq(vsi, seed, lut, lut_size);
	else
		return i40e_config_rss_reg(vsi, seed, lut, lut_size);
}

/**
 * i40e_get_rss - Get RSS keys and lut
 * @vsi: Pointer to VSI structure
 * @seed: Buffer to store the keys
 * @lut: Buffer to store the lookup table entries
 * lut_size: Size of buffer to store the lookup table entries
 *
 * Returns 0 on success, negative on failure
 */
int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
	return i40e_get_rss_reg(vsi, seed, lut, lut_size);
}

7999 8000 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8011 8012 8013 8014
/**
 * i40e_fill_rss_lut - Fill the RSS lookup table with default values
 * @pf: Pointer to board private structure
 * @lut: Lookup table
 * @rss_table_size: Lookup table size
 * @rss_size: Range of queue number for hashing
 */
static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
			      u16 rss_table_size, u16 rss_size)
{
	u16 i;

	for (i = 0; i < rss_table_size; i++)
		lut[i] = i % rss_size;
}

8015
/**
8016
 * i40e_pf_config_rss - Prepare for RSS if used
8017 8018
 * @pf: board private structure
 **/
8019
static int i40e_pf_config_rss(struct i40e_pf *pf)
8020 8021 8022
{
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	u8 seed[I40E_HKEY_ARRAY_SIZE];
8023
	u8 *lut;
8024 8025 8026
	struct i40e_hw *hw = &pf->hw;
	u32 reg_val;
	u64 hena;
8027
	int ret;
8028

J
Jesse Brandeburg 已提交
8029 8030 8031
	/* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
	hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
		((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
8032 8033
	hena |= i40e_pf_get_default_rss_hena(pf);

J
Jesse Brandeburg 已提交
8034 8035 8036
	wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
	wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));

8037
	/* Determine the RSS table size based on the hardware capabilities */
8038
	reg_val = rd32(hw, I40E_PFQF_CTL_0);
8039 8040 8041
	reg_val = (pf->rss_table_size == 512) ?
			(reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
			(reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8042 8043
	wr32(hw, I40E_PFQF_CTL_0, reg_val);

8044 8045
	/* Determine the RSS size of the VSI */
	if (!vsi->rss_size)
8046 8047
		vsi->rss_size = min_t(int, pf->alloc_rss_size,
				      vsi->num_queue_pairs);
8048

8049 8050 8051 8052
	lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
	if (!lut)
		return -ENOMEM;

8053 8054 8055 8056 8057
	/* Use user configured lut if there is one, otherwise use default */
	if (vsi->rss_lut_user)
		memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
	else
		i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8058

8059 8060 8061 8062 8063 8064 8065
	/* Use user configured hash key if there is one, otherwise
	 * use default.
	 */
	if (vsi->rss_hkey_user)
		memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
	else
		netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8066
	ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8067 8068 8069
	kfree(lut);

	return ret;
J
Jesse Brandeburg 已提交
8070 8071
}

8072 8073 8074 8075 8076 8077 8078 8079 8080 8081
/**
 * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
 * @pf: board private structure
 * @queue_count: the requested queue count for rss.
 *
 * returns 0 if rss is not enabled, if enabled returns the final rss queue
 * count which may be different from the requested queue count.
 **/
int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
{
8082 8083 8084
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	int new_rss_size;

8085 8086 8087
	if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
		return 0;

8088
	new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8089

8090 8091
	if (queue_count != vsi->num_queue_pairs) {
		vsi->req_queue_pairs = queue_count;
8092 8093
		i40e_prep_for_reset(pf);

8094
		pf->alloc_rss_size = new_rss_size;
8095 8096

		i40e_reset_and_rebuild(pf, true);
8097 8098 8099 8100 8101 8102 8103 8104 8105 8106 8107

		/* Discard the user configured hash keys and lut, if less
		 * queues are enabled.
		 */
		if (queue_count < vsi->rss_size) {
			i40e_clear_rss_config_user(vsi);
			dev_dbg(&pf->pdev->dev,
				"discard user configured hash keys and lut\n");
		}

		/* Reset vsi->rss_size, as number of enabled queues changed */
8108 8109
		vsi->rss_size = min_t(int, pf->alloc_rss_size,
				      vsi->num_queue_pairs);
8110

8111
		i40e_pf_config_rss(pf);
8112
	}
8113 8114
	dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->alloc_rss_size);
	return pf->alloc_rss_size;
8115 8116
}

8117 8118 8119 8120 8121 8122 8123 8124 8125 8126 8127 8128 8129 8130 8131 8132 8133 8134 8135 8136 8137 8138 8139 8140 8141 8142 8143 8144 8145 8146 8147 8148
/**
 * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
 * @pf: board private structure
 **/
i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
{
	i40e_status status;
	bool min_valid, max_valid;
	u32 max_bw, min_bw;

	status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
					   &min_valid, &max_valid);

	if (!status) {
		if (min_valid)
			pf->npar_min_bw = min_bw;
		if (max_valid)
			pf->npar_max_bw = max_bw;
	}

	return status;
}

/**
 * i40e_set_npar_bw_setting - Set BW settings for this PF partition
 * @pf: board private structure
 **/
i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
{
	struct i40e_aqc_configure_partition_bw_data bw_data;
	i40e_status status;

8149
	/* Set the valid bit for this PF */
8150
	bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8151 8152 8153 8154 8155 8156 8157 8158 8159 8160 8161 8162 8163 8164 8165 8166 8167 8168 8169 8170 8171 8172 8173 8174 8175 8176 8177 8178 8179 8180 8181 8182 8183
	bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
	bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;

	/* Set the new bandwidths */
	status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);

	return status;
}

/**
 * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
 * @pf: board private structure
 **/
i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
{
	/* Commit temporary BW setting to permanent NVM image */
	enum i40e_admin_queue_err last_aq_status;
	i40e_status ret;
	u16 nvm_word;

	if (pf->hw.partition_id != 1) {
		dev_info(&pf->pdev->dev,
			 "Commit BW only works on partition 1! This is partition %d",
			 pf->hw.partition_id);
		ret = I40E_NOT_SUPPORTED;
		goto bw_commit_out;
	}

	/* Acquire NVM for read access */
	ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
	last_aq_status = pf->hw.aq.asq_last_status;
	if (ret) {
		dev_info(&pf->pdev->dev,
8184 8185 8186
			 "Cannot acquire NVM for read access, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
8187 8188 8189 8190 8191 8192 8193 8194 8195 8196 8197 8198 8199 8200
		goto bw_commit_out;
	}

	/* Read word 0x10 of NVM - SW compatibility word 1 */
	ret = i40e_aq_read_nvm(&pf->hw,
			       I40E_SR_NVM_CONTROL_WORD,
			       0x10, sizeof(nvm_word), &nvm_word,
			       false, NULL);
	/* Save off last admin queue command status before releasing
	 * the NVM
	 */
	last_aq_status = pf->hw.aq.asq_last_status;
	i40e_release_nvm(&pf->hw);
	if (ret) {
8201 8202 8203
		dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
8204 8205 8206 8207 8208 8209 8210 8211 8212 8213 8214
		goto bw_commit_out;
	}

	/* Wait a bit for NVM release to complete */
	msleep(50);

	/* Acquire NVM for write access */
	ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
	last_aq_status = pf->hw.aq.asq_last_status;
	if (ret) {
		dev_info(&pf->pdev->dev,
8215 8216 8217
			 "Cannot acquire NVM for write access, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
8218 8219 8220 8221 8222 8223 8224 8225 8226 8227 8228 8229 8230 8231 8232 8233 8234
		goto bw_commit_out;
	}
	/* Write it back out unchanged to initiate update NVM,
	 * which will force a write of the shadow (alt) RAM to
	 * the NVM - thus storing the bandwidth values permanently.
	 */
	ret = i40e_aq_update_nvm(&pf->hw,
				 I40E_SR_NVM_CONTROL_WORD,
				 0x10, sizeof(nvm_word),
				 &nvm_word, true, NULL);
	/* Save off last admin queue command status before releasing
	 * the NVM
	 */
	last_aq_status = pf->hw.aq.asq_last_status;
	i40e_release_nvm(&pf->hw);
	if (ret)
		dev_info(&pf->pdev->dev,
8235 8236 8237
			 "BW settings NOT SAVED, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, last_aq_status));
8238 8239 8240 8241 8242
bw_commit_out:

	return ret;
}

J
Jesse Brandeburg 已提交
8243 8244 8245 8246 8247 8248 8249 8250 8251 8252 8253 8254 8255 8256 8257
/**
 * i40e_sw_init - Initialize general software structures (struct i40e_pf)
 * @pf: board private structure to initialize
 *
 * i40e_sw_init initializes the Adapter private data structure.
 * Fields are initialized based on PCI device information and
 * OS network device settings (MTU size).
 **/
static int i40e_sw_init(struct i40e_pf *pf)
{
	int err = 0;
	int size;

	pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
				(NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
S
Shannon Nelson 已提交
8258
	pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
J
Jesse Brandeburg 已提交
8259 8260 8261 8262 8263 8264 8265 8266 8267 8268
	if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
		if (I40E_DEBUG_USER & debug)
			pf->hw.debug_mask = debug;
		pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
						I40E_DEFAULT_MSG_ENABLE);
	}

	/* Set default capability flags */
	pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
		    I40E_FLAG_MSI_ENABLED     |
S
Shannon Nelson 已提交
8269
		    I40E_FLAG_LINK_POLLING_ENABLED |
8270 8271 8272 8273 8274 8275
		    I40E_FLAG_MSIX_ENABLED;

	if (iommu_present(&pci_bus_type))
		pf->flags |= I40E_FLAG_RX_PS_ENABLED;
	else
		pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
J
Jesse Brandeburg 已提交
8276

8277 8278 8279 8280
	/* Set default ITR */
	pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
	pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;

8281 8282 8283
	/* Depending on PF configurations, it is possible that the RSS
	 * maximum might end up larger than the available queues
	 */
8284
	pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8285
	pf->alloc_rss_size = 1;
8286
	pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8287 8288
	pf->rss_size_max = min_t(int, pf->rss_size_max,
				 pf->hw.func_caps.num_tx_qp);
J
Jesse Brandeburg 已提交
8289 8290
	if (pf->hw.func_caps.rss) {
		pf->flags |= I40E_FLAG_RSS_ENABLED;
8291 8292
		pf->alloc_rss_size = min_t(int, pf->rss_size_max,
					   num_online_cpus());
J
Jesse Brandeburg 已提交
8293 8294
	}

8295
	/* MFP mode enabled */
8296
	if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8297 8298
		pf->flags |= I40E_FLAG_MFP_ENABLED;
		dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8299 8300 8301 8302 8303 8304 8305
		if (i40e_get_npar_bw_setting(pf))
			dev_warn(&pf->pdev->dev,
				 "Could not get NPAR bw settings\n");
		else
			dev_info(&pf->pdev->dev,
				 "Min BW = %8.8x, Max BW = %8.8x\n",
				 pf->npar_min_bw, pf->npar_max_bw);
8306 8307
	}

8308 8309 8310 8311 8312
	/* FW/NVM is not yet fixed in this regard */
	if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
	    (pf->hw.func_caps.fd_filters_best_effort > 0)) {
		pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
		pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8313 8314
		if (pf->flags & I40E_FLAG_MFP_ENABLED &&
		    pf->hw.num_partitions > 1)
8315
			dev_info(&pf->pdev->dev,
A
Anjali Singhai Jain 已提交
8316
				 "Flow Director Sideband mode Disabled in MFP mode\n");
8317 8318
		else
			pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8319 8320 8321 8322
		pf->fdir_pf_filter_count =
				 pf->hw.func_caps.fd_filters_guaranteed;
		pf->hw.fdir_shared_filter_count =
				 pf->hw.func_caps.fd_filters_best_effort;
J
Jesse Brandeburg 已提交
8323 8324 8325 8326
	}

	if (pf->hw.func_caps.vmdq) {
		pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8327
		pf->flags |= I40E_FLAG_VMDQ_ENABLED;
J
Jesse Brandeburg 已提交
8328
		pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
J
Jesse Brandeburg 已提交
8329 8330
	}

8331
#ifdef I40E_FCOE
8332
	i40e_init_pf_fcoe(pf);
8333 8334

#endif /* I40E_FCOE */
J
Jesse Brandeburg 已提交
8335
#ifdef CONFIG_PCI_IOV
8336
	if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
J
Jesse Brandeburg 已提交
8337 8338 8339 8340 8341 8342 8343
		pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
		pf->flags |= I40E_FLAG_SRIOV_ENABLED;
		pf->num_req_vfs = min_t(int,
					pf->hw.func_caps.num_vfs,
					I40E_MAX_VF_COUNT);
	}
#endif /* CONFIG_PCI_IOV */
8344 8345 8346 8347 8348 8349 8350 8351
	if (pf->hw.mac.type == I40E_MAC_X722) {
		pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
			     I40E_FLAG_128_QP_RSS_CAPABLE |
			     I40E_FLAG_HW_ATR_EVICT_CAPABLE |
			     I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
			     I40E_FLAG_WB_ON_ITR_CAPABLE |
			     I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
	}
J
Jesse Brandeburg 已提交
8352 8353 8354 8355
	pf->eeprom_version = 0xDEAD;
	pf->lan_veb = I40E_NO_VEB;
	pf->lan_vsi = I40E_NO_VSI;

8356 8357 8358
	/* By default FW has this off for performance reasons */
	pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;

J
Jesse Brandeburg 已提交
8359 8360 8361 8362 8363 8364 8365 8366 8367 8368 8369
	/* set up queue assignment tracking */
	size = sizeof(struct i40e_lump_tracking)
		+ (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
	pf->qp_pile = kzalloc(size, GFP_KERNEL);
	if (!pf->qp_pile) {
		err = -ENOMEM;
		goto sw_init_done;
	}
	pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
	pf->qp_pile->search_hint = 0;

8370 8371
	pf->tx_timeout_recovery_level = 1;

J
Jesse Brandeburg 已提交
8372 8373
	mutex_init(&pf->switch_mutex);

G
Greg Rose 已提交
8374 8375 8376 8377
	/* If NPAR is enabled nudge the Tx scheduler */
	if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
		i40e_set_npar_bw_setting(pf);

J
Jesse Brandeburg 已提交
8378 8379 8380 8381
sw_init_done:
	return err;
}

8382 8383 8384 8385 8386 8387 8388 8389 8390 8391 8392 8393 8394 8395 8396 8397 8398 8399 8400 8401 8402 8403 8404 8405 8406 8407
/**
 * i40e_set_ntuple - set the ntuple feature flag and take action
 * @pf: board private structure to initialize
 * @features: the feature set that the stack is suggesting
 *
 * returns a bool to indicate if reset needs to happen
 **/
bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
{
	bool need_reset = false;

	/* Check if Flow Director n-tuple support was enabled or disabled.  If
	 * the state changed, we need to reset.
	 */
	if (features & NETIF_F_NTUPLE) {
		/* Enable filters and mark for reset */
		if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
			need_reset = true;
		pf->flags |= I40E_FLAG_FD_SB_ENABLED;
	} else {
		/* turn off filters, mark for reset and clear SW filter list */
		if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
			need_reset = true;
			i40e_fdir_filter_exit(pf);
		}
		pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8408
		pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8409 8410 8411 8412
		/* reset fd counters */
		pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
		pf->fdir_pf_active_filters = 0;
		pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8413 8414
		if (I40E_DEBUG_FD & pf->hw.debug_mask)
			dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8415 8416 8417 8418
		/* if ATR was auto disabled it can be re-enabled. */
		if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
		    (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
			pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8419 8420 8421 8422
	}
	return need_reset;
}

J
Jesse Brandeburg 已提交
8423 8424 8425 8426 8427 8428 8429 8430 8431 8432
/**
 * i40e_set_features - set the netdev feature flags
 * @netdev: ptr to the netdev being adjusted
 * @features: the feature set that the stack is suggesting
 **/
static int i40e_set_features(struct net_device *netdev,
			     netdev_features_t features)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
8433 8434
	struct i40e_pf *pf = vsi->back;
	bool need_reset;
J
Jesse Brandeburg 已提交
8435 8436 8437 8438 8439 8440

	if (features & NETIF_F_HW_VLAN_CTAG_RX)
		i40e_vlan_stripping_enable(vsi);
	else
		i40e_vlan_stripping_disable(vsi);

8441 8442 8443
	need_reset = i40e_set_ntuple(pf, features);

	if (need_reset)
8444
		i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8445

J
Jesse Brandeburg 已提交
8446 8447 8448
	return 0;
}

8449 8450 8451 8452 8453 8454 8455 8456 8457 8458 8459 8460 8461 8462 8463 8464 8465 8466 8467 8468 8469 8470 8471 8472 8473 8474 8475 8476 8477 8478 8479 8480 8481 8482 8483 8484 8485 8486 8487 8488 8489 8490
#ifdef CONFIG_I40E_VXLAN
/**
 * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
 * @pf: board private structure
 * @port: The UDP port to look up
 *
 * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
 **/
static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
{
	u8 i;

	for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
		if (pf->vxlan_ports[i] == port)
			return i;
	}

	return i;
}

/**
 * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
 * @netdev: This physical port's netdev
 * @sa_family: Socket Family that VXLAN is notifying us about
 * @port: New UDP port number that VXLAN started listening to
 **/
static void i40e_add_vxlan_port(struct net_device *netdev,
				sa_family_t sa_family, __be16 port)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	u8 next_idx;
	u8 idx;

	if (sa_family == AF_INET6)
		return;

	idx = i40e_get_vxlan_port_idx(pf, port);

	/* Check if port already exists */
	if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
S
Shannon Nelson 已提交
8491 8492
		netdev_info(netdev, "vxlan port %d already offloaded\n",
			    ntohs(port));
8493 8494 8495 8496 8497 8498 8499
		return;
	}

	/* Now check if there is space to add the new port */
	next_idx = i40e_get_vxlan_port_idx(pf, 0);

	if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
S
Shannon Nelson 已提交
8500
		netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8501 8502 8503 8504 8505 8506
			    ntohs(port));
		return;
	}

	/* New port: add it and mark its index in the bitmap */
	pf->vxlan_ports[next_idx] = port;
8507
	pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8508 8509 8510 8511 8512 8513 8514 8515 8516 8517 8518 8519 8520 8521 8522 8523 8524 8525 8526 8527 8528 8529 8530 8531 8532 8533 8534 8535
	pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
}

/**
 * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
 * @netdev: This physical port's netdev
 * @sa_family: Socket Family that VXLAN is notifying us about
 * @port: UDP port number that VXLAN stopped listening to
 **/
static void i40e_del_vxlan_port(struct net_device *netdev,
				sa_family_t sa_family, __be16 port)
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	u8 idx;

	if (sa_family == AF_INET6)
		return;

	idx = i40e_get_vxlan_port_idx(pf, port);

	/* Check if port already exists */
	if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
		/* if port exists, set it to 0 (mark for deletion)
		 * and make it pending
		 */
		pf->vxlan_ports[idx] = 0;
8536
		pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8537 8538
		pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
	} else {
S
Shannon Nelson 已提交
8539
		netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8540 8541 8542 8543 8544
			    ntohs(port));
	}
}

#endif
8545
static int i40e_get_phys_port_id(struct net_device *netdev,
8546
				 struct netdev_phys_item_id *ppid)
8547 8548 8549 8550 8551 8552 8553 8554 8555 8556 8557 8558 8559 8560
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_pf *pf = np->vsi->back;
	struct i40e_hw *hw = &pf->hw;

	if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
		return -EOPNOTSUPP;

	ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
	memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);

	return 0;
}

8561 8562 8563 8564 8565 8566 8567 8568
/**
 * i40e_ndo_fdb_add - add an entry to the hardware database
 * @ndm: the input from the stack
 * @tb: pointer to array of nladdr (unused)
 * @dev: the net device pointer
 * @addr: the MAC address entry being added
 * @flags: instructions from stack about fdb operation
 */
8569 8570
static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
			    struct net_device *dev,
8571
			    const unsigned char *addr, u16 vid,
8572 8573 8574 8575 8576 8577 8578 8579 8580
			    u16 flags)
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_pf *pf = np->vsi->back;
	int err = 0;

	if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
		return -EOPNOTSUPP;

8581 8582 8583 8584 8585
	if (vid) {
		pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
		return -EINVAL;
	}

8586 8587 8588 8589 8590 8591 8592 8593 8594 8595 8596 8597 8598 8599 8600 8601 8602 8603 8604 8605 8606 8607
	/* Hardware does not support aging addresses so if a
	 * ndm_state is given only allow permanent addresses
	 */
	if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
		netdev_info(dev, "FDB only supports static addresses\n");
		return -EINVAL;
	}

	if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
		err = dev_uc_add_excl(dev, addr);
	else if (is_multicast_ether_addr(addr))
		err = dev_mc_add_excl(dev, addr);
	else
		err = -EINVAL;

	/* Only return duplicate errors if NLM_F_EXCL is set */
	if (err == -EEXIST && !(flags & NLM_F_EXCL))
		err = 0;

	return err;
}

8608 8609 8610 8611 8612 8613 8614 8615 8616 8617 8618 8619 8620
/**
 * i40e_ndo_bridge_setlink - Set the hardware bridge mode
 * @dev: the netdev being configured
 * @nlh: RTNL message
 *
 * Inserts a new hardware bridge if not already created and
 * enables the bridging mode requested (VEB or VEPA). If the
 * hardware bridge has already been inserted and the request
 * is to change the mode then that requires a PF reset to
 * allow rebuild of the components with required hardware
 * bridge mode enabled.
 **/
static int i40e_ndo_bridge_setlink(struct net_device *dev,
8621 8622
				   struct nlmsghdr *nlh,
				   u16 flags)
8623 8624 8625 8626 8627 8628 8629 8630 8631 8632 8633 8634 8635 8636 8637 8638 8639 8640 8641 8642 8643 8644 8645 8646 8647 8648 8649 8650 8651 8652 8653 8654 8655 8656 8657 8658 8659 8660 8661 8662 8663 8664 8665 8666 8667 8668
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_veb *veb = NULL;
	struct nlattr *attr, *br_spec;
	int i, rem;

	/* Only for PF VSI for now */
	if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
		return -EOPNOTSUPP;

	/* Find the HW bridge for PF VSI */
	for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
		if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
			veb = pf->veb[i];
	}

	br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);

	nla_for_each_nested(attr, br_spec, rem) {
		__u16 mode;

		if (nla_type(attr) != IFLA_BRIDGE_MODE)
			continue;

		mode = nla_get_u16(attr);
		if ((mode != BRIDGE_MODE_VEPA) &&
		    (mode != BRIDGE_MODE_VEB))
			return -EINVAL;

		/* Insert a new HW bridge */
		if (!veb) {
			veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
					     vsi->tc_config.enabled_tc);
			if (veb) {
				veb->bridge_mode = mode;
				i40e_config_bridge_mode(veb);
			} else {
				/* No Bridge HW offload available */
				return -ENOENT;
			}
			break;
		} else if (mode != veb->bridge_mode) {
			/* Existing HW bridge but different mode needs reset */
			veb->bridge_mode = mode;
8669 8670 8671 8672 8673 8674
			/* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
			if (mode == BRIDGE_MODE_VEB)
				pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
			else
				pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
			i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8675 8676 8677 8678 8679 8680 8681 8682 8683 8684 8685 8686 8687 8688
			break;
		}
	}

	return 0;
}

/**
 * i40e_ndo_bridge_getlink - Get the hardware bridge mode
 * @skb: skb buff
 * @pid: process id
 * @seq: RTNL message seq #
 * @dev: the netdev being configured
 * @filter_mask: unused
8689
 * @nlflags: netlink flags passed in
8690 8691 8692 8693 8694 8695
 *
 * Return the mode in which the hardware bridge is operating in
 * i.e VEB or VEPA.
 **/
static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
				   struct net_device *dev,
8696 8697
				   u32 __always_unused filter_mask,
				   int nlflags)
8698 8699 8700 8701 8702 8703 8704 8705 8706 8707 8708 8709 8710 8711 8712 8713 8714 8715 8716 8717
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	struct i40e_veb *veb = NULL;
	int i;

	/* Only for PF VSI for now */
	if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
		return -EOPNOTSUPP;

	/* Find the HW bridge for the PF VSI */
	for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
		if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
			veb = pf->veb[i];
	}

	if (!veb)
		return 0;

8718
	return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8719
				       nlflags, 0, 0, filter_mask, NULL);
8720 8721
}

8722 8723 8724 8725
#define I40E_MAX_TUNNEL_HDR_LEN 80
/**
 * i40e_features_check - Validate encapsulated packet conforms to limits
 * @skb: skb buff
J
Jean Sacren 已提交
8726
 * @dev: This physical port's netdev
8727 8728 8729 8730 8731 8732 8733 8734 8735 8736 8737 8738 8739 8740
 * @features: Offload features that the stack believes apply
 **/
static netdev_features_t i40e_features_check(struct sk_buff *skb,
					     struct net_device *dev,
					     netdev_features_t features)
{
	if (skb->encapsulation &&
	    (skb_inner_mac_header(skb) - skb_transport_header(skb) >
	     I40E_MAX_TUNNEL_HDR_LEN))
		return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);

	return features;
}

8741
static const struct net_device_ops i40e_netdev_ops = {
J
Jesse Brandeburg 已提交
8742 8743 8744 8745 8746 8747 8748 8749
	.ndo_open		= i40e_open,
	.ndo_stop		= i40e_close,
	.ndo_start_xmit		= i40e_lan_xmit_frame,
	.ndo_get_stats64	= i40e_get_netdev_stats_struct,
	.ndo_set_rx_mode	= i40e_set_rx_mode,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_set_mac_address	= i40e_set_mac,
	.ndo_change_mtu		= i40e_change_mtu,
J
Jacob Keller 已提交
8750
	.ndo_do_ioctl		= i40e_ioctl,
J
Jesse Brandeburg 已提交
8751 8752 8753 8754 8755 8756 8757
	.ndo_tx_timeout		= i40e_tx_timeout,
	.ndo_vlan_rx_add_vid	= i40e_vlan_rx_add_vid,
	.ndo_vlan_rx_kill_vid	= i40e_vlan_rx_kill_vid,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_poll_controller	= i40e_netpoll,
#endif
	.ndo_setup_tc		= i40e_setup_tc,
8758 8759 8760 8761
#ifdef I40E_FCOE
	.ndo_fcoe_enable	= i40e_fcoe_enable,
	.ndo_fcoe_disable	= i40e_fcoe_disable,
#endif
J
Jesse Brandeburg 已提交
8762 8763 8764
	.ndo_set_features	= i40e_set_features,
	.ndo_set_vf_mac		= i40e_ndo_set_vf_mac,
	.ndo_set_vf_vlan	= i40e_ndo_set_vf_port_vlan,
8765
	.ndo_set_vf_rate	= i40e_ndo_set_vf_bw,
J
Jesse Brandeburg 已提交
8766
	.ndo_get_vf_config	= i40e_ndo_get_vf_config,
M
Mitch Williams 已提交
8767
	.ndo_set_vf_link_state	= i40e_ndo_set_vf_link_state,
8768
	.ndo_set_vf_spoofchk	= i40e_ndo_set_vf_spoofchk,
8769 8770 8771 8772
#ifdef CONFIG_I40E_VXLAN
	.ndo_add_vxlan_port	= i40e_add_vxlan_port,
	.ndo_del_vxlan_port	= i40e_del_vxlan_port,
#endif
8773
	.ndo_get_phys_port_id	= i40e_get_phys_port_id,
8774
	.ndo_fdb_add		= i40e_ndo_fdb_add,
8775
	.ndo_features_check	= i40e_features_check,
8776 8777
	.ndo_bridge_getlink	= i40e_ndo_bridge_getlink,
	.ndo_bridge_setlink	= i40e_ndo_bridge_setlink,
J
Jesse Brandeburg 已提交
8778 8779 8780 8781 8782 8783 8784 8785 8786 8787
};

/**
 * i40e_config_netdev - Setup the netdev flags
 * @vsi: the VSI being configured
 *
 * Returns 0 on success, negative value on failure
 **/
static int i40e_config_netdev(struct i40e_vsi *vsi)
{
8788
	u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
J
Jesse Brandeburg 已提交
8789 8790 8791 8792 8793 8794 8795 8796
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_netdev_priv *np;
	struct net_device *netdev;
	u8 mac_addr[ETH_ALEN];
	int etherdev_size;

	etherdev_size = sizeof(struct i40e_netdev_priv);
8797
	netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
J
Jesse Brandeburg 已提交
8798 8799 8800 8801 8802 8803 8804
	if (!netdev)
		return -ENOMEM;

	vsi->netdev = netdev;
	np = netdev_priv(netdev);
	np->vsi = vsi;

8805
	netdev->hw_enc_features |= NETIF_F_IP_CSUM	 |
J
Jesse Brandeburg 已提交
8806
				  NETIF_F_GSO_UDP_TUNNEL |
8807
				  NETIF_F_GSO_GRE	 |
8808
				  NETIF_F_TSO;
J
Jesse Brandeburg 已提交
8809 8810 8811 8812 8813 8814

	netdev->features = NETIF_F_SG		       |
			   NETIF_F_IP_CSUM	       |
			   NETIF_F_SCTP_CSUM	       |
			   NETIF_F_HIGHDMA	       |
			   NETIF_F_GSO_UDP_TUNNEL      |
8815
			   NETIF_F_GSO_GRE	       |
J
Jesse Brandeburg 已提交
8816 8817 8818 8819 8820
			   NETIF_F_HW_VLAN_CTAG_TX     |
			   NETIF_F_HW_VLAN_CTAG_RX     |
			   NETIF_F_HW_VLAN_CTAG_FILTER |
			   NETIF_F_IPV6_CSUM	       |
			   NETIF_F_TSO		       |
8821
			   NETIF_F_TSO_ECN	       |
J
Jesse Brandeburg 已提交
8822 8823 8824 8825 8826
			   NETIF_F_TSO6		       |
			   NETIF_F_RXCSUM	       |
			   NETIF_F_RXHASH	       |
			   0;

8827 8828 8829
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		netdev->features |= NETIF_F_NTUPLE;

J
Jesse Brandeburg 已提交
8830 8831 8832 8833 8834
	/* copy netdev features into list of user selectable features */
	netdev->hw_features |= netdev->features;

	if (vsi->type == I40E_VSI_MAIN) {
		SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8835
		ether_addr_copy(mac_addr, hw->mac.perm_addr);
8836 8837 8838 8839
		/* The following steps are necessary to prevent reception
		 * of tagged packets - some older NVM configurations load a
		 * default a MAC-VLAN filter that accepts any tagged packet
		 * which must be replaced by a normal filter.
8840
		 */
K
Kiran Patil 已提交
8841 8842
		if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
			spin_lock_bh(&vsi->mac_filter_list_lock);
8843 8844
			i40e_add_filter(vsi, mac_addr,
					I40E_VLAN_ANY, false, true);
K
Kiran Patil 已提交
8845 8846
			spin_unlock_bh(&vsi->mac_filter_list_lock);
		}
J
Jesse Brandeburg 已提交
8847 8848 8849 8850 8851
	} else {
		/* relate the VSI_VMDQ name to the VSI_MAIN name */
		snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
			 pf->vsi[pf->lan_vsi]->netdev->name);
		random_ether_addr(mac_addr);
K
Kiran Patil 已提交
8852 8853

		spin_lock_bh(&vsi->mac_filter_list_lock);
J
Jesse Brandeburg 已提交
8854
		i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
K
Kiran Patil 已提交
8855
		spin_unlock_bh(&vsi->mac_filter_list_lock);
J
Jesse Brandeburg 已提交
8856
	}
K
Kiran Patil 已提交
8857 8858

	spin_lock_bh(&vsi->mac_filter_list_lock);
8859
	i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
K
Kiran Patil 已提交
8860
	spin_unlock_bh(&vsi->mac_filter_list_lock);
J
Jesse Brandeburg 已提交
8861

8862 8863
	ether_addr_copy(netdev->dev_addr, mac_addr);
	ether_addr_copy(netdev->perm_addr, mac_addr);
J
Jesse Brandeburg 已提交
8864 8865 8866 8867 8868 8869 8870 8871 8872 8873 8874 8875 8876 8877
	/* vlan gets same features (except vlan offload)
	 * after any tweaks for specific VSI types
	 */
	netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
						     NETIF_F_HW_VLAN_CTAG_RX |
						   NETIF_F_HW_VLAN_CTAG_FILTER);
	netdev->priv_flags |= IFF_UNICAST_FLT;
	netdev->priv_flags |= IFF_SUPP_NOFCS;
	/* Setup netdev TC information */
	i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);

	netdev->netdev_ops = &i40e_netdev_ops;
	netdev->watchdog_timeo = 5 * HZ;
	i40e_set_ethtool_ops(netdev);
8878 8879 8880
#ifdef I40E_FCOE
	i40e_fcoe_config_netdev(netdev, vsi);
#endif
J
Jesse Brandeburg 已提交
8881 8882 8883 8884 8885 8886 8887 8888 8889 8890 8891 8892 8893 8894 8895 8896 8897 8898 8899

	return 0;
}

/**
 * i40e_vsi_delete - Delete a VSI from the switch
 * @vsi: the VSI being removed
 *
 * Returns 0 on success, negative value on failure
 **/
static void i40e_vsi_delete(struct i40e_vsi *vsi)
{
	/* remove default VSI is not allowed */
	if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
		return;

	i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
}

8900 8901 8902 8903 8904 8905 8906 8907 8908 8909 8910 8911 8912 8913 8914 8915
/**
 * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
 * @vsi: the VSI being queried
 *
 * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
 **/
int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
{
	struct i40e_veb *veb;
	struct i40e_pf *pf = vsi->back;

	/* Uplink is not a bridge so default to VEB */
	if (vsi->veb_idx == I40E_NO_VEB)
		return 1;

	veb = pf->veb[vsi->veb_idx];
8916 8917 8918 8919 8920 8921
	if (!veb) {
		dev_info(&pf->pdev->dev,
			 "There is no veb associated with the bridge\n");
		return -ENOENT;
	}

8922
	/* Uplink is a bridge in VEPA mode */
8923
	if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8924
		return 0;
8925 8926 8927 8928
	} else {
		/* Uplink is a bridge in VEB mode */
		return 1;
	}
8929

8930 8931
	/* VEPA is now default bridge, so return 0 */
	return 0;
8932 8933
}

J
Jesse Brandeburg 已提交
8934 8935 8936 8937 8938 8939 8940 8941 8942 8943
/**
 * i40e_add_vsi - Add a VSI to the switch
 * @vsi: the VSI being configured
 *
 * This initializes a VSI context depending on the VSI type to be added and
 * passes it down to the add_vsi aq command.
 **/
static int i40e_add_vsi(struct i40e_vsi *vsi)
{
	int ret = -ENODEV;
K
Kiran Patil 已提交
8944 8945
	u8 laa_macaddr[ETH_ALEN];
	bool found_laa_mac_filter = false;
J
Jesse Brandeburg 已提交
8946 8947 8948
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vsi_context ctxt;
K
Kiran Patil 已提交
8949 8950
	struct i40e_mac_filter *f, *ftmp;

J
Jesse Brandeburg 已提交
8951 8952 8953 8954 8955 8956 8957 8958 8959 8960 8961 8962 8963 8964 8965 8966 8967 8968
	u8 enabled_tc = 0x1; /* TC0 enabled */
	int f_count = 0;

	memset(&ctxt, 0, sizeof(ctxt));
	switch (vsi->type) {
	case I40E_VSI_MAIN:
		/* The PF's main VSI is already setup as part of the
		 * device initialization, so we'll not bother with
		 * the add_vsi call, but we will retrieve the current
		 * VSI context.
		 */
		ctxt.seid = pf->main_vsi_seid;
		ctxt.pf_num = pf->hw.pf_id;
		ctxt.vf_num = 0;
		ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
		ctxt.flags = I40E_AQ_VSI_TYPE_PF;
		if (ret) {
			dev_info(&pf->pdev->dev,
8969 8970 8971 8972
				 "couldn't get PF vsi config, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
8973 8974
			return -ENOENT;
		}
8975
		vsi->info = ctxt.info;
J
Jesse Brandeburg 已提交
8976 8977 8978 8979 8980 8981 8982 8983
		vsi->info.valid_sections = 0;

		vsi->seid = ctxt.seid;
		vsi->id = ctxt.vsi_number;

		enabled_tc = i40e_pf_get_tc_map(pf);

		/* MFP mode setup queue map and update VSI */
8984 8985
		if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
		    !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
J
Jesse Brandeburg 已提交
8986 8987 8988 8989 8990 8991 8992 8993
			memset(&ctxt, 0, sizeof(ctxt));
			ctxt.seid = pf->main_vsi_seid;
			ctxt.pf_num = pf->hw.pf_id;
			ctxt.vf_num = 0;
			i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
			ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
			if (ret) {
				dev_info(&pf->pdev->dev,
8994 8995 8996 8997
					 "update vsi failed, err %s aq_err %s\n",
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						    pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
8998 8999 9000 9001 9002 9003 9004 9005 9006 9007
				ret = -ENOENT;
				goto err;
			}
			/* update the local VSI info queue map */
			i40e_vsi_update_queue_map(vsi, &ctxt);
			vsi->info.valid_sections = 0;
		} else {
			/* Default/Main VSI is only enabled for TC0
			 * reconfigure it to enable all TCs that are
			 * available on the port in SFP mode.
9008 9009
			 * For MFP case the iSCSI PF would use this
			 * flow to enable LAN+iSCSI TC.
J
Jesse Brandeburg 已提交
9010 9011 9012 9013
			 */
			ret = i40e_vsi_config_tc(vsi, enabled_tc);
			if (ret) {
				dev_info(&pf->pdev->dev,
9014 9015 9016 9017 9018
					 "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
					 enabled_tc,
					 i40e_stat_str(&pf->hw, ret),
					 i40e_aq_str(&pf->hw,
						    pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
9019 9020 9021 9022 9023 9024
				ret = -ENOENT;
			}
		}
		break;

	case I40E_VSI_FDIR:
9025 9026 9027
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = 0;
		ctxt.uplink_seid = vsi->uplink_seid;
9028
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9029
		ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9030 9031
		if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
		    (i40e_is_vsi_uplink_mode_veb(vsi))) {
9032
			ctxt.info.valid_sections |=
9033
			     cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9034
			ctxt.info.switch_id =
9035
			   cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9036
		}
J
Jesse Brandeburg 已提交
9037 9038 9039 9040 9041 9042 9043
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

	case I40E_VSI_VMDQ2:
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = 0;
		ctxt.uplink_seid = vsi->uplink_seid;
9044
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
J
Jesse Brandeburg 已提交
9045 9046 9047 9048 9049
		ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
9050 9051 9052 9053 9054 9055
		if (i40e_is_vsi_uplink_mode_veb(vsi)) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
			ctxt.info.switch_id =
				cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
		}
J
Jesse Brandeburg 已提交
9056 9057 9058 9059 9060 9061 9062 9063 9064

		/* Setup the VSI tx/rx queue map for TC0 only for now */
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

	case I40E_VSI_SRIOV:
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
		ctxt.uplink_seid = vsi->uplink_seid;
9065
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
J
Jesse Brandeburg 已提交
9066 9067 9068 9069 9070
		ctxt.flags = I40E_AQ_VSI_TYPE_VF;

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
9071 9072 9073 9074 9075 9076
		if (i40e_is_vsi_uplink_mode_veb(vsi)) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
			ctxt.info.switch_id =
				cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
		}
J
Jesse Brandeburg 已提交
9077 9078 9079

		ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
		ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9080 9081 9082 9083 9084 9085 9086
		if (pf->vf[vsi->vf_id].spoofchk) {
			ctxt.info.valid_sections |=
				cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
			ctxt.info.sec_flags |=
				(I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
				 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
		}
J
Jesse Brandeburg 已提交
9087 9088 9089 9090
		/* Setup the VSI tx/rx queue map for TC0 only for now */
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

9091 9092 9093 9094 9095 9096 9097 9098 9099 9100
#ifdef I40E_FCOE
	case I40E_VSI_FCOE:
		ret = i40e_fcoe_vsi_init(vsi, &ctxt);
		if (ret) {
			dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
			return ret;
		}
		break;

#endif /* I40E_FCOE */
J
Jesse Brandeburg 已提交
9101 9102 9103 9104 9105 9106 9107 9108
	default:
		return -ENODEV;
	}

	if (vsi->type != I40E_VSI_MAIN) {
		ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
		if (ret) {
			dev_info(&vsi->back->pdev->dev,
9109 9110 9111 9112
				 "add vsi failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
9113 9114 9115
			ret = -ENOENT;
			goto err;
		}
9116
		vsi->info = ctxt.info;
J
Jesse Brandeburg 已提交
9117 9118 9119 9120 9121
		vsi->info.valid_sections = 0;
		vsi->seid = ctxt.seid;
		vsi->id = ctxt.vsi_number;
	}

K
Kiran Patil 已提交
9122
	spin_lock_bh(&vsi->mac_filter_list_lock);
J
Jesse Brandeburg 已提交
9123 9124 9125 9126
	/* If macvlan filters already exist, force them to get loaded */
	list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
		f->changed = true;
		f_count++;
S
Shannon Nelson 已提交
9127

K
Kiran Patil 已提交
9128
		/* Expected to have only one MAC filter entry for LAA in list */
S
Shannon Nelson 已提交
9129
		if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
K
Kiran Patil 已提交
9130 9131 9132 9133 9134
			ether_addr_copy(laa_macaddr, f->macaddr);
			found_laa_mac_filter = true;
		}
	}
	spin_unlock_bh(&vsi->mac_filter_list_lock);
9135

K
Kiran Patil 已提交
9136 9137
	if (found_laa_mac_filter) {
		struct i40e_aqc_remove_macvlan_element_data element;
9138

K
Kiran Patil 已提交
9139 9140 9141 9142 9143 9144 9145 9146 9147 9148 9149
		memset(&element, 0, sizeof(element));
		ether_addr_copy(element.mac_addr, laa_macaddr);
		element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
		ret = i40e_aq_remove_macvlan(hw, vsi->seid,
					     &element, 1, NULL);
		if (ret) {
			/* some older FW has a different default */
			element.flags |=
				       I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
			i40e_aq_remove_macvlan(hw, vsi->seid,
					       &element, 1, NULL);
S
Shannon Nelson 已提交
9150
		}
K
Kiran Patil 已提交
9151 9152 9153 9154

		i40e_aq_mac_address_write(hw,
					  I40E_AQC_WRITE_TYPE_LAA_WOL,
					  laa_macaddr, NULL);
J
Jesse Brandeburg 已提交
9155
	}
K
Kiran Patil 已提交
9156

J
Jesse Brandeburg 已提交
9157 9158 9159 9160 9161 9162 9163 9164 9165
	if (f_count) {
		vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
		pf->flags |= I40E_FLAG_FILTER_SYNC;
	}

	/* Update VSI BW information */
	ret = i40e_vsi_get_bw_info(vsi);
	if (ret) {
		dev_info(&pf->pdev->dev,
9166 9167 9168
			 "couldn't get vsi bw info, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
9169 9170 9171 9172 9173 9174 9175 9176 9177 9178 9179 9180 9181 9182 9183 9184 9185 9186 9187 9188 9189 9190 9191 9192 9193 9194 9195 9196 9197 9198 9199 9200 9201 9202 9203 9204 9205 9206 9207 9208 9209 9210 9211 9212 9213
		/* VSI is already added so not tearing that up */
		ret = 0;
	}

err:
	return ret;
}

/**
 * i40e_vsi_release - Delete a VSI and free its resources
 * @vsi: the VSI being removed
 *
 * Returns 0 on success or < 0 on error
 **/
int i40e_vsi_release(struct i40e_vsi *vsi)
{
	struct i40e_mac_filter *f, *ftmp;
	struct i40e_veb *veb = NULL;
	struct i40e_pf *pf;
	u16 uplink_seid;
	int i, n;

	pf = vsi->back;

	/* release of a VEB-owner or last VSI is not allowed */
	if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
		dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
			 vsi->seid, vsi->uplink_seid);
		return -ENODEV;
	}
	if (vsi == pf->vsi[pf->lan_vsi] &&
	    !test_bit(__I40E_DOWN, &pf->state)) {
		dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
		return -ENODEV;
	}

	uplink_seid = vsi->uplink_seid;
	if (vsi->type != I40E_VSI_SRIOV) {
		if (vsi->netdev_registered) {
			vsi->netdev_registered = false;
			if (vsi->netdev) {
				/* results in a call to i40e_close() */
				unregister_netdev(vsi->netdev);
			}
		} else {
9214
			i40e_vsi_close(vsi);
J
Jesse Brandeburg 已提交
9215 9216 9217 9218
		}
		i40e_vsi_disable_irq(vsi);
	}

K
Kiran Patil 已提交
9219
	spin_lock_bh(&vsi->mac_filter_list_lock);
J
Jesse Brandeburg 已提交
9220 9221 9222
	list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
		i40e_del_filter(vsi, f->macaddr, f->vlan,
				f->is_vf, f->is_netdev);
K
Kiran Patil 已提交
9223 9224
	spin_unlock_bh(&vsi->mac_filter_list_lock);

9225
	i40e_sync_vsi_filters(vsi, false);
J
Jesse Brandeburg 已提交
9226 9227 9228

	i40e_vsi_delete(vsi);
	i40e_vsi_free_q_vectors(vsi);
9229 9230 9231 9232
	if (vsi->netdev) {
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
J
Jesse Brandeburg 已提交
9233 9234 9235 9236 9237 9238 9239 9240 9241 9242 9243
	i40e_vsi_clear_rings(vsi);
	i40e_vsi_clear(vsi);

	/* If this was the last thing on the VEB, except for the
	 * controlling VSI, remove the VEB, which puts the controlling
	 * VSI onto the next level down in the switch.
	 *
	 * Well, okay, there's one more exception here: don't remove
	 * the orphan VEBs yet.  We'll wait for an explicit remove request
	 * from up the network stack.
	 */
M
Mitch Williams 已提交
9244
	for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
9245 9246 9247 9248 9249 9250 9251 9252 9253 9254 9255 9256 9257 9258 9259 9260 9261 9262 9263 9264 9265 9266 9267 9268 9269 9270 9271 9272 9273 9274 9275 9276 9277 9278 9279
		if (pf->vsi[i] &&
		    pf->vsi[i]->uplink_seid == uplink_seid &&
		    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
			n++;      /* count the VSIs */
		}
	}
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (!pf->veb[i])
			continue;
		if (pf->veb[i]->uplink_seid == uplink_seid)
			n++;     /* count the VEBs */
		if (pf->veb[i]->seid == uplink_seid)
			veb = pf->veb[i];
	}
	if (n == 0 && veb && veb->uplink_seid != 0)
		i40e_veb_release(veb);

	return 0;
}

/**
 * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
 * @vsi: ptr to the VSI
 *
 * This should only be called after i40e_vsi_mem_alloc() which allocates the
 * corresponding SW VSI structure and initializes num_queue_pairs for the
 * newly allocated VSI.
 *
 * Returns 0 on success or negative on failure
 **/
static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
{
	int ret = -ENOENT;
	struct i40e_pf *pf = vsi->back;

9280
	if (vsi->q_vectors[0]) {
J
Jesse Brandeburg 已提交
9281 9282 9283 9284 9285 9286
		dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
			 vsi->seid);
		return -EEXIST;
	}

	if (vsi->base_vector) {
9287
		dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
J
Jesse Brandeburg 已提交
9288 9289 9290 9291
			 vsi->seid, vsi->base_vector);
		return -EEXIST;
	}

9292
	ret = i40e_vsi_alloc_q_vectors(vsi);
J
Jesse Brandeburg 已提交
9293 9294 9295 9296 9297 9298 9299 9300
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "failed to allocate %d q_vector for VSI %d, ret=%d\n",
			 vsi->num_q_vectors, vsi->seid, ret);
		vsi->num_q_vectors = 0;
		goto vector_setup_out;
	}

9301 9302 9303 9304 9305
	/* In Legacy mode, we do not have to get any other vector since we
	 * piggyback on the misc/ICR0 for queue interrupts.
	*/
	if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
		return ret;
9306 9307 9308
	if (vsi->num_q_vectors)
		vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
						 vsi->num_q_vectors, vsi->idx);
J
Jesse Brandeburg 已提交
9309 9310
	if (vsi->base_vector < 0) {
		dev_info(&pf->pdev->dev,
9311 9312
			 "failed to get tracking for %d vectors for VSI %d, err=%d\n",
			 vsi->num_q_vectors, vsi->seid, vsi->base_vector);
J
Jesse Brandeburg 已提交
9313 9314 9315 9316 9317 9318 9319 9320 9321
		i40e_vsi_free_q_vectors(vsi);
		ret = -ENOENT;
		goto vector_setup_out;
	}

vector_setup_out:
	return ret;
}

9322 9323 9324 9325 9326 9327 9328 9329 9330 9331 9332 9333 9334 9335 9336 9337 9338 9339 9340 9341 9342 9343 9344 9345 9346 9347
/**
 * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
 * @vsi: pointer to the vsi.
 *
 * This re-allocates a vsi's queue resources.
 *
 * Returns pointer to the successfully allocated and configured VSI sw struct
 * on success, otherwise returns NULL on failure.
 **/
static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
{
	struct i40e_pf *pf = vsi->back;
	u8 enabled_tc;
	int ret;

	i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
	i40e_vsi_clear_rings(vsi);

	i40e_vsi_free_arrays(vsi, false);
	i40e_set_num_rings_in_vsi(vsi);
	ret = i40e_vsi_alloc_arrays(vsi, false);
	if (ret)
		goto err_vsi;

	ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
	if (ret < 0) {
9348
		dev_info(&pf->pdev->dev,
9349
			 "failed to get tracking for %d queues for VSI %d err %d\n",
9350
			 vsi->alloc_queue_pairs, vsi->seid, ret);
9351 9352 9353 9354 9355 9356 9357 9358 9359 9360 9361 9362 9363 9364 9365 9366 9367 9368 9369 9370 9371 9372 9373 9374 9375 9376 9377 9378 9379 9380 9381 9382 9383 9384 9385
		goto err_vsi;
	}
	vsi->base_queue = ret;

	/* Update the FW view of the VSI. Force a reset of TC and queue
	 * layout configurations.
	 */
	enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
	pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
	pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
	i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);

	/* assign it some queues */
	ret = i40e_alloc_rings(vsi);
	if (ret)
		goto err_rings;

	/* map all of the rings to the q_vectors */
	i40e_vsi_map_rings_to_vectors(vsi);
	return vsi;

err_rings:
	i40e_vsi_free_q_vectors(vsi);
	if (vsi->netdev_registered) {
		vsi->netdev_registered = false;
		unregister_netdev(vsi->netdev);
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
	i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
	i40e_vsi_clear(vsi);
	return NULL;
}

J
Jesse Brandeburg 已提交
9386 9387 9388 9389 9390 9391 9392 9393 9394 9395 9396 9397 9398 9399 9400 9401 9402 9403 9404 9405 9406 9407 9408 9409 9410 9411 9412 9413 9414 9415 9416 9417 9418 9419 9420 9421 9422 9423 9424 9425 9426 9427 9428
/**
 * i40e_vsi_setup - Set up a VSI by a given type
 * @pf: board private structure
 * @type: VSI type
 * @uplink_seid: the switch element to link to
 * @param1: usage depends upon VSI type. For VF types, indicates VF id
 *
 * This allocates the sw VSI structure and its queue resources, then add a VSI
 * to the identified VEB.
 *
 * Returns pointer to the successfully allocated and configure VSI sw struct on
 * success, otherwise returns NULL on failure.
 **/
struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
				u16 uplink_seid, u32 param1)
{
	struct i40e_vsi *vsi = NULL;
	struct i40e_veb *veb = NULL;
	int ret, i;
	int v_idx;

	/* The requested uplink_seid must be either
	 *     - the PF's port seid
	 *              no VEB is needed because this is the PF
	 *              or this is a Flow Director special case VSI
	 *     - seid of an existing VEB
	 *     - seid of a VSI that owns an existing VEB
	 *     - seid of a VSI that doesn't own a VEB
	 *              a new VEB is created and the VSI becomes the owner
	 *     - seid of the PF VSI, which is what creates the first VEB
	 *              this is a special case of the previous
	 *
	 * Find which uplink_seid we were given and create a new VEB if needed
	 */
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
			veb = pf->veb[i];
			break;
		}
	}

	if (!veb && uplink_seid != pf->mac_seid) {

M
Mitch Williams 已提交
9429
		for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
9430 9431 9432 9433 9434 9435 9436 9437 9438 9439 9440 9441 9442 9443 9444 9445 9446
			if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
				vsi = pf->vsi[i];
				break;
			}
		}
		if (!vsi) {
			dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
				 uplink_seid);
			return NULL;
		}

		if (vsi->uplink_seid == pf->mac_seid)
			veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
					     vsi->tc_config.enabled_tc);
		else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
			veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
					     vsi->tc_config.enabled_tc);
9447 9448 9449
		if (veb) {
			if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
				dev_info(&vsi->back->pdev->dev,
S
Shannon Nelson 已提交
9450
					 "New VSI creation error, uplink seid of LAN VSI expected.\n");
9451 9452
				return NULL;
			}
9453 9454 9455 9456 9457 9458 9459 9460
			/* We come up by default in VEPA mode if SRIOV is not
			 * already enabled, in which case we can't force VEPA
			 * mode.
			 */
			if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
				veb->bridge_mode = BRIDGE_MODE_VEPA;
				pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
			}
9461
			i40e_config_bridge_mode(veb);
9462
		}
J
Jesse Brandeburg 已提交
9463 9464 9465 9466 9467 9468 9469 9470 9471 9472 9473 9474 9475 9476 9477 9478 9479 9480
		for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
			if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
				veb = pf->veb[i];
		}
		if (!veb) {
			dev_info(&pf->pdev->dev, "couldn't add VEB\n");
			return NULL;
		}

		vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
		uplink_seid = veb->seid;
	}

	/* get vsi sw struct */
	v_idx = i40e_vsi_mem_alloc(pf, type);
	if (v_idx < 0)
		goto err_alloc;
	vsi = pf->vsi[v_idx];
9481 9482
	if (!vsi)
		goto err_alloc;
J
Jesse Brandeburg 已提交
9483 9484 9485 9486 9487 9488 9489 9490
	vsi->type = type;
	vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);

	if (type == I40E_VSI_MAIN)
		pf->lan_vsi = v_idx;
	else if (type == I40E_VSI_SRIOV)
		vsi->vf_id = param1;
	/* assign it some queues */
9491 9492
	ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
				vsi->idx);
J
Jesse Brandeburg 已提交
9493
	if (ret < 0) {
9494 9495 9496
		dev_info(&pf->pdev->dev,
			 "failed to get tracking for %d queues for VSI %d err=%d\n",
			 vsi->alloc_queue_pairs, vsi->seid, ret);
J
Jesse Brandeburg 已提交
9497 9498 9499 9500 9501 9502 9503 9504 9505 9506 9507 9508 9509 9510
		goto err_vsi;
	}
	vsi->base_queue = ret;

	/* get a VSI from the hardware */
	vsi->uplink_seid = uplink_seid;
	ret = i40e_add_vsi(vsi);
	if (ret)
		goto err_vsi;

	switch (vsi->type) {
	/* setup the netdev if needed */
	case I40E_VSI_MAIN:
	case I40E_VSI_VMDQ2:
9511
	case I40E_VSI_FCOE:
J
Jesse Brandeburg 已提交
9512 9513 9514 9515 9516 9517 9518 9519
		ret = i40e_config_netdev(vsi);
		if (ret)
			goto err_netdev;
		ret = register_netdev(vsi->netdev);
		if (ret)
			goto err_netdev;
		vsi->netdev_registered = true;
		netif_carrier_off(vsi->netdev);
N
Neerav Parikh 已提交
9520 9521 9522 9523
#ifdef CONFIG_I40E_DCB
		/* Setup DCB netlink interface */
		i40e_dcbnl_setup(vsi);
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
9524 9525 9526 9527 9528 9529 9530 9531 9532 9533 9534 9535 9536 9537 9538 9539 9540 9541 9542 9543 9544 9545 9546
		/* fall through */

	case I40E_VSI_FDIR:
		/* set up vectors and rings if needed */
		ret = i40e_vsi_setup_vectors(vsi);
		if (ret)
			goto err_msix;

		ret = i40e_alloc_rings(vsi);
		if (ret)
			goto err_rings;

		/* map all of the rings to the q_vectors */
		i40e_vsi_map_rings_to_vectors(vsi);

		i40e_vsi_reset_stats(vsi);
		break;

	default:
		/* no netdev or rings for the other VSI types */
		break;
	}

9547 9548 9549 9550
	if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
	    (vsi->type == I40E_VSI_VMDQ2)) {
		ret = i40e_vsi_config_rss(vsi);
	}
J
Jesse Brandeburg 已提交
9551 9552 9553 9554 9555 9556 9557 9558 9559 9560 9561 9562 9563 9564 9565 9566 9567 9568 9569 9570 9571 9572 9573 9574 9575 9576 9577 9578 9579 9580 9581 9582 9583 9584 9585 9586 9587 9588 9589
	return vsi;

err_rings:
	i40e_vsi_free_q_vectors(vsi);
err_msix:
	if (vsi->netdev_registered) {
		vsi->netdev_registered = false;
		unregister_netdev(vsi->netdev);
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
err_netdev:
	i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
	i40e_vsi_clear(vsi);
err_alloc:
	return NULL;
}

/**
 * i40e_veb_get_bw_info - Query VEB BW information
 * @veb: the veb to query
 *
 * Query the Tx scheduler BW configuration data for given VEB
 **/
static int i40e_veb_get_bw_info(struct i40e_veb *veb)
{
	struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
	struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
	struct i40e_pf *pf = veb->pf;
	struct i40e_hw *hw = &pf->hw;
	u32 tc_bw_max;
	int ret = 0;
	int i;

	ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
						  &bw_data, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
9590 9591 9592
			 "query veb bw config failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
J
Jesse Brandeburg 已提交
9593 9594 9595 9596 9597 9598 9599
		goto out;
	}

	ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
						   &ets_data, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
9600 9601 9602
			 "query veb bw ets config failed, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
J
Jesse Brandeburg 已提交
9603 9604 9605 9606 9607 9608
		goto out;
	}

	veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
	veb->bw_max_quanta = ets_data.tc_bw_max;
	veb->is_abs_credits = bw_data.absolute_credits_enable;
9609
	veb->enabled_tc = ets_data.tc_valid_bits;
J
Jesse Brandeburg 已提交
9610 9611 9612 9613 9614 9615 9616 9617 9618 9619 9620 9621 9622 9623 9624 9625 9626 9627 9628 9629 9630 9631 9632 9633 9634 9635 9636 9637 9638 9639 9640 9641 9642 9643 9644 9645 9646 9647 9648 9649 9650 9651 9652 9653 9654 9655 9656 9657 9658 9659 9660 9661 9662 9663 9664 9665 9666 9667 9668 9669 9670 9671 9672 9673 9674 9675 9676 9677 9678 9679 9680 9681 9682 9683 9684 9685 9686 9687 9688 9689 9690 9691 9692 9693 9694 9695
	tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
		    (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
		veb->bw_tc_limit_credits[i] =
					le16_to_cpu(bw_data.tc_bw_limits[i]);
		veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
	}

out:
	return ret;
}

/**
 * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
 * @pf: board private structure
 *
 * On error: returns error code (negative)
 * On success: returns vsi index in PF (positive)
 **/
static int i40e_veb_mem_alloc(struct i40e_pf *pf)
{
	int ret = -ENOENT;
	struct i40e_veb *veb;
	int i;

	/* Need to protect the allocation of switch elements at the PF level */
	mutex_lock(&pf->switch_mutex);

	/* VEB list may be fragmented if VEB creation/destruction has
	 * been happening.  We can afford to do a quick scan to look
	 * for any free slots in the list.
	 *
	 * find next empty veb slot, looping back around if necessary
	 */
	i = 0;
	while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
		i++;
	if (i >= I40E_MAX_VEB) {
		ret = -ENOMEM;
		goto err_alloc_veb;  /* out of VEB slots! */
	}

	veb = kzalloc(sizeof(*veb), GFP_KERNEL);
	if (!veb) {
		ret = -ENOMEM;
		goto err_alloc_veb;
	}
	veb->pf = pf;
	veb->idx = i;
	veb->enabled_tc = 1;

	pf->veb[i] = veb;
	ret = i;
err_alloc_veb:
	mutex_unlock(&pf->switch_mutex);
	return ret;
}

/**
 * i40e_switch_branch_release - Delete a branch of the switch tree
 * @branch: where to start deleting
 *
 * This uses recursion to find the tips of the branch to be
 * removed, deleting until we get back to and can delete this VEB.
 **/
static void i40e_switch_branch_release(struct i40e_veb *branch)
{
	struct i40e_pf *pf = branch->pf;
	u16 branch_seid = branch->seid;
	u16 veb_idx = branch->idx;
	int i;

	/* release any VEBs on this VEB - RECURSION */
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (!pf->veb[i])
			continue;
		if (pf->veb[i]->uplink_seid == branch->seid)
			i40e_switch_branch_release(pf->veb[i]);
	}

	/* Release the VSIs on this VEB, but not the owner VSI.
	 *
	 * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
	 *       the VEB itself, so don't use (*branch) after this loop.
	 */
M
Mitch Williams 已提交
9696
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
9697 9698 9699 9700 9701 9702 9703 9704 9705 9706 9707 9708 9709 9710 9711 9712 9713 9714 9715 9716 9717 9718 9719 9720 9721 9722 9723 9724 9725 9726 9727 9728 9729 9730 9731 9732 9733 9734 9735 9736 9737 9738 9739 9740 9741 9742 9743 9744 9745 9746 9747
		if (!pf->vsi[i])
			continue;
		if (pf->vsi[i]->uplink_seid == branch_seid &&
		   (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
			i40e_vsi_release(pf->vsi[i]);
		}
	}

	/* There's one corner case where the VEB might not have been
	 * removed, so double check it here and remove it if needed.
	 * This case happens if the veb was created from the debugfs
	 * commands and no VSIs were added to it.
	 */
	if (pf->veb[veb_idx])
		i40e_veb_release(pf->veb[veb_idx]);
}

/**
 * i40e_veb_clear - remove veb struct
 * @veb: the veb to remove
 **/
static void i40e_veb_clear(struct i40e_veb *veb)
{
	if (!veb)
		return;

	if (veb->pf) {
		struct i40e_pf *pf = veb->pf;

		mutex_lock(&pf->switch_mutex);
		if (pf->veb[veb->idx] == veb)
			pf->veb[veb->idx] = NULL;
		mutex_unlock(&pf->switch_mutex);
	}

	kfree(veb);
}

/**
 * i40e_veb_release - Delete a VEB and free its resources
 * @veb: the VEB being removed
 **/
void i40e_veb_release(struct i40e_veb *veb)
{
	struct i40e_vsi *vsi = NULL;
	struct i40e_pf *pf;
	int i, n = 0;

	pf = veb->pf;

	/* find the remaining VSI and check for extras */
M
Mitch Williams 已提交
9748
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
9749 9750 9751 9752 9753 9754 9755 9756 9757 9758 9759 9760 9761 9762 9763 9764 9765 9766 9767 9768 9769 9770 9771 9772 9773 9774 9775 9776 9777 9778 9779 9780 9781 9782 9783 9784 9785
		if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
			n++;
			vsi = pf->vsi[i];
		}
	}
	if (n != 1) {
		dev_info(&pf->pdev->dev,
			 "can't remove VEB %d with %d VSIs left\n",
			 veb->seid, n);
		return;
	}

	/* move the remaining VSI to uplink veb */
	vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
	if (veb->uplink_seid) {
		vsi->uplink_seid = veb->uplink_seid;
		if (veb->uplink_seid == pf->mac_seid)
			vsi->veb_idx = I40E_NO_VEB;
		else
			vsi->veb_idx = veb->veb_idx;
	} else {
		/* floating VEB */
		vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
		vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
	}

	i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
	i40e_veb_clear(veb);
}

/**
 * i40e_add_veb - create the VEB in the switch
 * @veb: the VEB to be instantiated
 * @vsi: the controlling VSI
 **/
static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
{
9786
	struct i40e_pf *pf = veb->pf;
9787
	bool is_default = veb->pf->cur_promisc;
K
Kevin Scott 已提交
9788
	bool is_cloud = false;
J
Jesse Brandeburg 已提交
9789 9790 9791
	int ret;

	/* get a VEB from the hardware */
9792
	ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
K
Kevin Scott 已提交
9793 9794
			      veb->enabled_tc, is_default,
			      is_cloud, &veb->seid, NULL);
J
Jesse Brandeburg 已提交
9795
	if (ret) {
9796 9797 9798 9799
		dev_info(&pf->pdev->dev,
			 "couldn't add VEB, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
9800 9801 9802 9803
		return -EPERM;
	}

	/* get statistics counter */
9804
	ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
J
Jesse Brandeburg 已提交
9805 9806
					 &veb->stats_idx, NULL, NULL, NULL);
	if (ret) {
9807 9808 9809 9810
		dev_info(&pf->pdev->dev,
			 "couldn't get VEB statistics idx, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
9811 9812 9813 9814
		return -EPERM;
	}
	ret = i40e_veb_get_bw_info(veb);
	if (ret) {
9815 9816 9817 9818 9819
		dev_info(&pf->pdev->dev,
			 "couldn't get VEB bw info, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
		i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
J
Jesse Brandeburg 已提交
9820 9821 9822 9823 9824 9825 9826 9827 9828 9829 9830 9831 9832 9833 9834 9835 9836 9837 9838 9839 9840 9841 9842 9843 9844 9845 9846 9847 9848 9849 9850 9851 9852 9853 9854 9855 9856 9857 9858 9859 9860 9861 9862 9863
		return -ENOENT;
	}

	vsi->uplink_seid = veb->seid;
	vsi->veb_idx = veb->idx;
	vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;

	return 0;
}

/**
 * i40e_veb_setup - Set up a VEB
 * @pf: board private structure
 * @flags: VEB setup flags
 * @uplink_seid: the switch element to link to
 * @vsi_seid: the initial VSI seid
 * @enabled_tc: Enabled TC bit-map
 *
 * This allocates the sw VEB structure and links it into the switch
 * It is possible and legal for this to be a duplicate of an already
 * existing VEB.  It is also possible for both uplink and vsi seids
 * to be zero, in order to create a floating VEB.
 *
 * Returns pointer to the successfully allocated VEB sw struct on
 * success, otherwise returns NULL on failure.
 **/
struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
				u16 uplink_seid, u16 vsi_seid,
				u8 enabled_tc)
{
	struct i40e_veb *veb, *uplink_veb = NULL;
	int vsi_idx, veb_idx;
	int ret;

	/* if one seid is 0, the other must be 0 to create a floating relay */
	if ((uplink_seid == 0 || vsi_seid == 0) &&
	    (uplink_seid + vsi_seid != 0)) {
		dev_info(&pf->pdev->dev,
			 "one, not both seid's are 0: uplink=%d vsi=%d\n",
			 uplink_seid, vsi_seid);
		return NULL;
	}

	/* make sure there is such a vsi and uplink */
M
Mitch Williams 已提交
9864
	for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
J
Jesse Brandeburg 已提交
9865 9866
		if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
			break;
M
Mitch Williams 已提交
9867
	if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
J
Jesse Brandeburg 已提交
9868 9869 9870 9871 9872 9873 9874 9875 9876 9877 9878 9879 9880 9881 9882 9883 9884 9885 9886 9887 9888 9889 9890 9891 9892 9893 9894 9895 9896 9897 9898 9899 9900 9901
		dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
			 vsi_seid);
		return NULL;
	}

	if (uplink_seid && uplink_seid != pf->mac_seid) {
		for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
			if (pf->veb[veb_idx] &&
			    pf->veb[veb_idx]->seid == uplink_seid) {
				uplink_veb = pf->veb[veb_idx];
				break;
			}
		}
		if (!uplink_veb) {
			dev_info(&pf->pdev->dev,
				 "uplink seid %d not found\n", uplink_seid);
			return NULL;
		}
	}

	/* get veb sw struct */
	veb_idx = i40e_veb_mem_alloc(pf);
	if (veb_idx < 0)
		goto err_alloc;
	veb = pf->veb[veb_idx];
	veb->flags = flags;
	veb->uplink_seid = uplink_seid;
	veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
	veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);

	/* create the VEB in the switch */
	ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
	if (ret)
		goto err_veb;
S
Shannon Nelson 已提交
9902 9903
	if (vsi_idx == pf->lan_vsi)
		pf->lan_veb = veb->idx;
J
Jesse Brandeburg 已提交
9904 9905 9906 9907 9908 9909 9910 9911 9912 9913

	return veb;

err_veb:
	i40e_veb_clear(veb);
err_alloc:
	return NULL;
}

/**
9914
 * i40e_setup_pf_switch_element - set PF vars based on switch type
J
Jesse Brandeburg 已提交
9915 9916 9917 9918 9919 9920 9921 9922 9923 9924 9925 9926 9927 9928 9929 9930 9931 9932 9933 9934 9935 9936 9937 9938 9939 9940 9941 9942 9943 9944 9945 9946 9947 9948 9949 9950 9951 9952 9953 9954 9955 9956 9957 9958 9959 9960 9961 9962 9963 9964 9965 9966 9967 9968 9969 9970 9971 9972 9973 9974 9975 9976 9977 9978 9979 9980 9981 9982 9983 9984 9985 9986 9987 9988 9989 9990 9991 9992 9993 9994 9995 9996 9997 9998 9999 10000 10001 10002 10003 10004 10005 10006 10007 10008 10009 10010 10011 10012 10013 10014 10015 10016 10017 10018 10019 10020 10021 10022 10023 10024
 * @pf: board private structure
 * @ele: element we are building info from
 * @num_reported: total number of elements
 * @printconfig: should we print the contents
 *
 * helper function to assist in extracting a few useful SEID values.
 **/
static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
				struct i40e_aqc_switch_config_element_resp *ele,
				u16 num_reported, bool printconfig)
{
	u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
	u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
	u8 element_type = ele->element_type;
	u16 seid = le16_to_cpu(ele->seid);

	if (printconfig)
		dev_info(&pf->pdev->dev,
			 "type=%d seid=%d uplink=%d downlink=%d\n",
			 element_type, seid, uplink_seid, downlink_seid);

	switch (element_type) {
	case I40E_SWITCH_ELEMENT_TYPE_MAC:
		pf->mac_seid = seid;
		break;
	case I40E_SWITCH_ELEMENT_TYPE_VEB:
		/* Main VEB? */
		if (uplink_seid != pf->mac_seid)
			break;
		if (pf->lan_veb == I40E_NO_VEB) {
			int v;

			/* find existing or else empty VEB */
			for (v = 0; v < I40E_MAX_VEB; v++) {
				if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
					pf->lan_veb = v;
					break;
				}
			}
			if (pf->lan_veb == I40E_NO_VEB) {
				v = i40e_veb_mem_alloc(pf);
				if (v < 0)
					break;
				pf->lan_veb = v;
			}
		}

		pf->veb[pf->lan_veb]->seid = seid;
		pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
		pf->veb[pf->lan_veb]->pf = pf;
		pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
		break;
	case I40E_SWITCH_ELEMENT_TYPE_VSI:
		if (num_reported != 1)
			break;
		/* This is immediately after a reset so we can assume this is
		 * the PF's VSI
		 */
		pf->mac_seid = uplink_seid;
		pf->pf_seid = downlink_seid;
		pf->main_vsi_seid = seid;
		if (printconfig)
			dev_info(&pf->pdev->dev,
				 "pf_seid=%d main_vsi_seid=%d\n",
				 pf->pf_seid, pf->main_vsi_seid);
		break;
	case I40E_SWITCH_ELEMENT_TYPE_PF:
	case I40E_SWITCH_ELEMENT_TYPE_VF:
	case I40E_SWITCH_ELEMENT_TYPE_EMP:
	case I40E_SWITCH_ELEMENT_TYPE_BMC:
	case I40E_SWITCH_ELEMENT_TYPE_PE:
	case I40E_SWITCH_ELEMENT_TYPE_PA:
		/* ignore these for now */
		break;
	default:
		dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
			 element_type, seid);
		break;
	}
}

/**
 * i40e_fetch_switch_configuration - Get switch config from firmware
 * @pf: board private structure
 * @printconfig: should we print the contents
 *
 * Get the current switch configuration from the device and
 * extract a few useful SEID values.
 **/
int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
{
	struct i40e_aqc_get_switch_config_resp *sw_config;
	u16 next_seid = 0;
	int ret = 0;
	u8 *aq_buf;
	int i;

	aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
	if (!aq_buf)
		return -ENOMEM;

	sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
	do {
		u16 num_reported, num_total;

		ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
						I40E_AQ_LARGE_BUF,
						&next_seid, NULL);
		if (ret) {
			dev_info(&pf->pdev->dev,
10025 10026 10027 10028
				 "get switch config failed err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, ret),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
10029 10030 10031 10032 10033 10034 10035 10036 10037 10038 10039 10040 10041 10042 10043 10044 10045 10046 10047 10048 10049 10050 10051 10052 10053 10054 10055 10056
			kfree(aq_buf);
			return -ENOENT;
		}

		num_reported = le16_to_cpu(sw_config->header.num_reported);
		num_total = le16_to_cpu(sw_config->header.num_total);

		if (printconfig)
			dev_info(&pf->pdev->dev,
				 "header: %d reported %d total\n",
				 num_reported, num_total);

		for (i = 0; i < num_reported; i++) {
			struct i40e_aqc_switch_config_element_resp *ele =
				&sw_config->element[i];

			i40e_setup_pf_switch_element(pf, ele, num_reported,
						     printconfig);
		}
	} while (next_seid != 0);

	kfree(aq_buf);
	return ret;
}

/**
 * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
 * @pf: board private structure
10057
 * @reinit: if the Main VSI needs to re-initialized.
J
Jesse Brandeburg 已提交
10058 10059 10060
 *
 * Returns 0 on success, negative value on failure
 **/
10061
static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
J
Jesse Brandeburg 已提交
10062 10063 10064 10065 10066 10067 10068
{
	int ret;

	/* find out what's out there already */
	ret = i40e_fetch_switch_configuration(pf, false);
	if (ret) {
		dev_info(&pf->pdev->dev,
10069 10070 10071
			 "couldn't fetch switch config, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, ret),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
10072 10073 10074 10075 10076
		return ret;
	}
	i40e_pf_reset_stats(pf);

	/* first time setup */
10077
	if (pf->lan_vsi == I40E_NO_VSI || reinit) {
J
Jesse Brandeburg 已提交
10078 10079 10080 10081 10082 10083 10084 10085 10086 10087
		struct i40e_vsi *vsi = NULL;
		u16 uplink_seid;

		/* Set up the PF VSI associated with the PF's main VSI
		 * that is already in the HW switch
		 */
		if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
			uplink_seid = pf->veb[pf->lan_veb]->seid;
		else
			uplink_seid = pf->mac_seid;
10088 10089 10090 10091
		if (pf->lan_vsi == I40E_NO_VSI)
			vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
		else if (reinit)
			vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
J
Jesse Brandeburg 已提交
10092 10093 10094 10095 10096 10097 10098 10099
		if (!vsi) {
			dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
			i40e_fdir_teardown(pf);
			return -EAGAIN;
		}
	} else {
		/* force a reset of TC and queue layout configurations */
		u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
J
Jesse Brandeburg 已提交
10100

J
Jesse Brandeburg 已提交
10101 10102 10103 10104 10105 10106
		pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
		pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
		i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
	}
	i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);

10107 10108
	i40e_fdir_sb_setup(pf);

J
Jesse Brandeburg 已提交
10109 10110 10111 10112 10113 10114 10115 10116 10117 10118 10119 10120
	/* Setup static PF queue filter control settings */
	ret = i40e_setup_pf_filter_control(pf);
	if (ret) {
		dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
			 ret);
		/* Failure here should not stop continuing other steps */
	}

	/* enable RSS in the HW, even for only one queue, as the stack can use
	 * the hash
	 */
	if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10121
		i40e_pf_config_rss(pf);
J
Jesse Brandeburg 已提交
10122 10123

	/* fill in link information and enable LSE reporting */
10124
	i40e_update_link_info(&pf->hw);
10125 10126
	i40e_link_event(pf);

10127
	/* Initialize user-specific link properties */
J
Jesse Brandeburg 已提交
10128 10129
	pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
				  I40E_AQ_AN_COMPLETED) ? true : false);
10130

J
Jacob Keller 已提交
10131 10132
	i40e_ptp_init(pf);

J
Jesse Brandeburg 已提交
10133 10134 10135 10136 10137 10138 10139 10140 10141 10142 10143 10144
	return ret;
}

/**
 * i40e_determine_queue_usage - Work out queue distribution
 * @pf: board private structure
 **/
static void i40e_determine_queue_usage(struct i40e_pf *pf)
{
	int queues_left;

	pf->num_lan_qps = 0;
10145 10146 10147
#ifdef I40E_FCOE
	pf->num_fcoe_qps = 0;
#endif
J
Jesse Brandeburg 已提交
10148 10149 10150 10151 10152 10153 10154

	/* Find the max queues to be put into basic use.  We'll always be
	 * using TC0, whether or not DCB is running, and TC0 will get the
	 * big RSS set.
	 */
	queues_left = pf->hw.func_caps.num_tx_qp;

10155
	if ((queues_left == 1) ||
10156
	    !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
J
Jesse Brandeburg 已提交
10157 10158
		/* one qp for PF, no queues for anything else */
		queues_left = 0;
10159
		pf->alloc_rss_size = pf->num_lan_qps = 1;
J
Jesse Brandeburg 已提交
10160 10161

		/* make sure all the fancies are disabled */
J
Jesse Brandeburg 已提交
10162
		pf->flags &= ~(I40E_FLAG_RSS_ENABLED	|
10163 10164 10165
#ifdef I40E_FCOE
			       I40E_FLAG_FCOE_ENABLED	|
#endif
J
Jesse Brandeburg 已提交
10166 10167
			       I40E_FLAG_FD_SB_ENABLED	|
			       I40E_FLAG_FD_ATR_ENABLED	|
10168
			       I40E_FLAG_DCB_CAPABLE	|
J
Jesse Brandeburg 已提交
10169 10170
			       I40E_FLAG_SRIOV_ENABLED	|
			       I40E_FLAG_VMDQ_ENABLED);
10171 10172
	} else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
				  I40E_FLAG_FD_SB_ENABLED |
10173
				  I40E_FLAG_FD_ATR_ENABLED |
10174
				  I40E_FLAG_DCB_CAPABLE))) {
10175
		/* one qp for PF */
10176
		pf->alloc_rss_size = pf->num_lan_qps = 1;
10177 10178 10179
		queues_left -= pf->num_lan_qps;

		pf->flags &= ~(I40E_FLAG_RSS_ENABLED	|
10180 10181 10182
#ifdef I40E_FCOE
			       I40E_FLAG_FCOE_ENABLED	|
#endif
10183 10184 10185 10186
			       I40E_FLAG_FD_SB_ENABLED	|
			       I40E_FLAG_FD_ATR_ENABLED	|
			       I40E_FLAG_DCB_ENABLED	|
			       I40E_FLAG_VMDQ_ENABLED);
J
Jesse Brandeburg 已提交
10187
	} else {
10188
		/* Not enough queues for all TCs */
10189
		if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10190
		    (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10191
			pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10192 10193
			dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
		}
10194 10195 10196 10197 10198
		pf->num_lan_qps = max_t(int, pf->rss_size_max,
					num_online_cpus());
		pf->num_lan_qps = min_t(int, pf->num_lan_qps,
					pf->hw.func_caps.num_tx_qp);

10199 10200 10201
		queues_left -= pf->num_lan_qps;
	}

10202 10203 10204 10205 10206 10207 10208 10209 10210 10211 10212 10213 10214 10215 10216 10217
#ifdef I40E_FCOE
	if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
		if (I40E_DEFAULT_FCOE <= queues_left) {
			pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
		} else if (I40E_MINIMUM_FCOE <= queues_left) {
			pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
		} else {
			pf->num_fcoe_qps = 0;
			pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
			dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
		}

		queues_left -= pf->num_fcoe_qps;
	}

#endif
10218 10219 10220 10221 10222 10223 10224
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
		if (queues_left > 1) {
			queues_left -= 1; /* save 1 queue for FD */
		} else {
			pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
			dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
		}
J
Jesse Brandeburg 已提交
10225 10226 10227 10228
	}

	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
	    pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10229 10230
		pf->num_req_vfs = min_t(int, pf->num_req_vfs,
					(queues_left / pf->num_vf_qps));
J
Jesse Brandeburg 已提交
10231 10232 10233 10234 10235 10236 10237 10238 10239 10240
		queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
	}

	if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
	    pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
		pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
					  (queues_left / pf->num_vmdq_qps));
		queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
	}

10241
	pf->queues_left = queues_left;
10242 10243 10244 10245
	dev_dbg(&pf->pdev->dev,
		"qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
		pf->hw.func_caps.num_tx_qp,
		!!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10246 10247 10248
		pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
		pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
		queues_left);
10249
#ifdef I40E_FCOE
10250
	dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10251
#endif
J
Jesse Brandeburg 已提交
10252 10253 10254 10255 10256 10257
}

/**
 * i40e_setup_pf_filter_control - Setup PF static filter control
 * @pf: PF to be setup
 *
10258
 * i40e_setup_pf_filter_control sets up a PF's initial filter control
J
Jesse Brandeburg 已提交
10259 10260 10261 10262 10263 10264 10265 10266 10267 10268 10269 10270 10271
 * settings. If PE/FCoE are enabled then it will also set the per PF
 * based filter sizes required for them. It also enables Flow director,
 * ethertype and macvlan type filter settings for the pf.
 *
 * Returns 0 on success, negative on failure
 **/
static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
{
	struct i40e_filter_control_settings *settings = &pf->filter_settings;

	settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;

	/* Flow Director is enabled */
J
Jesse Brandeburg 已提交
10272
	if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
J
Jesse Brandeburg 已提交
10273 10274 10275 10276 10277 10278 10279 10280 10281 10282 10283 10284
		settings->enable_fdir = true;

	/* Ethtype and MACVLAN filters enabled for PF */
	settings->enable_ethtype = true;
	settings->enable_macvlan = true;

	if (i40e_set_filter_control(&pf->hw, settings))
		return -ENOENT;

	return 0;
}

J
Jesse Brandeburg 已提交
10285
#define INFO_STRING_LEN 255
10286
#define REMAIN(__x) (INFO_STRING_LEN - (__x))
J
Jesse Brandeburg 已提交
10287 10288 10289 10290
static void i40e_print_features(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	char *buf, *string;
10291
	int i = 0;
J
Jesse Brandeburg 已提交
10292 10293 10294 10295 10296 10297 10298 10299 10300

	string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
	if (!string) {
		dev_err(&pf->pdev->dev, "Features string allocation failed\n");
		return;
	}

	buf = string;

10301
	i += snprintf(&buf[i], REMAIN(i), "Features: PF-id[%d] ", hw->pf_id);
J
Jesse Brandeburg 已提交
10302
#ifdef CONFIG_PCI_IOV
10303
	i += snprintf(&buf[i], REMAIN(i), "VFs: %d ", pf->num_req_vfs);
J
Jesse Brandeburg 已提交
10304
#endif
10305 10306 10307 10308
	i += snprintf(&buf[i], REMAIN(i), "VSIs: %d QP: %d RX: %s ",
		      pf->hw.func_caps.num_vsis,
		      pf->vsi[pf->lan_vsi]->num_queue_pairs,
		      pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
J
Jesse Brandeburg 已提交
10309 10310

	if (pf->flags & I40E_FLAG_RSS_ENABLED)
10311
		i += snprintf(&buf[i], REMAIN(i), "RSS ");
J
Jesse Brandeburg 已提交
10312
	if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10313
		i += snprintf(&buf[i], REMAIN(i), "FD_ATR ");
10314
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10315 10316
		i += snprintf(&buf[i], REMAIN(i), "FD_SB ");
		i += snprintf(&buf[i], REMAIN(i), "NTUPLE ");
10317
	}
10318
	if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10319
		i += snprintf(&buf[i], REMAIN(i), "DCB ");
J
Jesse Brandeburg 已提交
10320
#if IS_ENABLED(CONFIG_VXLAN)
10321
	i += snprintf(&buf[i], REMAIN(i), "VxLAN ");
J
Jesse Brandeburg 已提交
10322
#endif
J
Jesse Brandeburg 已提交
10323
	if (pf->flags & I40E_FLAG_PTP)
10324
		i += snprintf(&buf[i], REMAIN(i), "PTP ");
10325 10326
#ifdef I40E_FCOE
	if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10327
		i += snprintf(&buf[i], REMAIN(i), "FCOE ");
10328
#endif
10329
	if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10330
		i += snprintf(&buf[i], REMAIN(i), "VEPA ");
10331 10332
	else
		buf += sprintf(buf, "VEPA ");
J
Jesse Brandeburg 已提交
10333 10334 10335

	dev_info(&pf->pdev->dev, "%s\n", string);
	kfree(string);
10336
	WARN_ON(i > INFO_STRING_LEN);
J
Jesse Brandeburg 已提交
10337 10338
}

J
Jesse Brandeburg 已提交
10339 10340 10341 10342 10343
/**
 * i40e_probe - Device initialization routine
 * @pdev: PCI device information struct
 * @ent: entry in i40e_pci_tbl
 *
10344 10345
 * i40e_probe initializes a PF identified by a pci_dev structure.
 * The OS initialization, configuring of the PF private structure,
J
Jesse Brandeburg 已提交
10346 10347 10348 10349 10350 10351
 * and a hardware reset occur.
 *
 * Returns 0 on success, negative on failure
 **/
static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
10352
	struct i40e_aq_get_phy_abilities_resp abilities;
J
Jesse Brandeburg 已提交
10353 10354
	struct i40e_pf *pf;
	struct i40e_hw *hw;
10355
	static u16 pfs_found;
10356
	u16 wol_nvm_bits;
10357
	u16 link_status;
10358
	int err;
J
Jesse Brandeburg 已提交
10359
	u32 len;
10360
	u32 val;
10361
	u32 i;
10362
	u8 set_fc_aq_fail;
J
Jesse Brandeburg 已提交
10363 10364 10365 10366 10367 10368

	err = pci_enable_device_mem(pdev);
	if (err)
		return err;

	/* set up for high or low dma */
10369 10370
	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
	if (err) {
10371 10372 10373 10374 10375 10376
		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
		if (err) {
			dev_err(&pdev->dev,
				"DMA configuration failed: 0x%x\n", err);
			goto err_dma;
		}
J
Jesse Brandeburg 已提交
10377 10378 10379 10380 10381 10382 10383 10384 10385 10386 10387 10388 10389 10390 10391 10392 10393 10394 10395 10396 10397 10398 10399 10400 10401 10402 10403 10404 10405 10406
	}

	/* set up pci connections */
	err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
					   IORESOURCE_MEM), i40e_driver_name);
	if (err) {
		dev_info(&pdev->dev,
			 "pci_request_selected_regions failed %d\n", err);
		goto err_pci_reg;
	}

	pci_enable_pcie_error_reporting(pdev);
	pci_set_master(pdev);

	/* Now that we have a PCI connection, we need to do the
	 * low level device setup.  This is primarily setting up
	 * the Admin Queue structures and then querying for the
	 * device's current profile information.
	 */
	pf = kzalloc(sizeof(*pf), GFP_KERNEL);
	if (!pf) {
		err = -ENOMEM;
		goto err_pf_alloc;
	}
	pf->next_vsi = 0;
	pf->pdev = pdev;
	set_bit(__I40E_DOWN, &pf->state);

	hw = &pf->hw;
	hw->back = pf;
A
Anjali Singhai 已提交
10407

S
Shannon Nelson 已提交
10408 10409
	pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
				I40E_MAX_CSR_SPACE);
A
Anjali Singhai 已提交
10410

S
Shannon Nelson 已提交
10411
	hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
J
Jesse Brandeburg 已提交
10412 10413 10414 10415
	if (!hw->hw_addr) {
		err = -EIO;
		dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
			 (unsigned int)pci_resource_start(pdev, 0),
S
Shannon Nelson 已提交
10416
			 pf->ioremap_len, err);
J
Jesse Brandeburg 已提交
10417 10418 10419 10420 10421 10422 10423 10424 10425
		goto err_ioremap;
	}
	hw->vendor_id = pdev->vendor;
	hw->device_id = pdev->device;
	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
	hw->subsystem_vendor_id = pdev->subsystem_vendor;
	hw->subsystem_device_id = pdev->subsystem_device;
	hw->bus.device = PCI_SLOT(pdev->devfn);
	hw->bus.func = PCI_FUNC(pdev->devfn);
10426
	pf->instance = pfs_found;
J
Jesse Brandeburg 已提交
10427

S
Shannon Nelson 已提交
10428 10429 10430 10431 10432
	if (debug != -1) {
		pf->msg_enable = pf->hw.debug_mask;
		pf->msg_enable = debug;
	}

10433 10434 10435 10436 10437 10438 10439 10440 10441 10442 10443
	/* do a special CORER for clearing PXE mode once at init */
	if (hw->revision_id == 0 &&
	    (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
		wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
		i40e_flush(hw);
		msleep(200);
		pf->corer_count++;

		i40e_clear_pxe_mode(hw);
	}

J
Jesse Brandeburg 已提交
10444
	/* Reset here to make sure all is clean and to define PF 'n' */
10445
	i40e_clear_hw(hw);
J
Jesse Brandeburg 已提交
10446 10447 10448 10449 10450 10451 10452 10453 10454 10455 10456 10457
	err = i40e_pf_reset(hw);
	if (err) {
		dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
		goto err_pf_reset;
	}
	pf->pfr_count++;

	hw->aq.num_arq_entries = I40E_AQ_LEN;
	hw->aq.num_asq_entries = I40E_AQ_LEN;
	hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
	hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
	pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10458

10459
	snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10460 10461
		 "%s-%s:misc",
		 dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
J
Jesse Brandeburg 已提交
10462 10463 10464

	err = i40e_init_shared_code(hw);
	if (err) {
10465 10466
		dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
			 err);
J
Jesse Brandeburg 已提交
10467 10468 10469
		goto err_pf_reset;
	}

10470 10471 10472
	/* set up a default setting for link flow control */
	pf->hw.fc.requested_mode = I40E_FC_NONE;

J
Jesse Brandeburg 已提交
10473
	err = i40e_init_adminq(hw);
10474

10475 10476 10477 10478 10479
	/* provide nvm, fw, api versions */
	dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
		 hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
		 hw->aq.api_maj_ver, hw->aq.api_min_ver,
		 i40e_nvm_version_str(hw));
10480

J
Jesse Brandeburg 已提交
10481 10482
	if (err) {
		dev_info(&pdev->dev,
10483
			 "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
J
Jesse Brandeburg 已提交
10484 10485 10486
		goto err_pf_reset;
	}

10487 10488
	if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
	    hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10489
		dev_info(&pdev->dev,
10490 10491 10492
			 "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
	else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
		 hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10493
		dev_info(&pdev->dev,
10494
			 "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10495

10496 10497
	i40e_verify_eeprom(pf);

10498 10499 10500 10501
	/* Rev 0 hardware was never productized */
	if (hw->revision_id < 1)
		dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");

10502
	i40e_clear_pxe_mode(hw);
J
Jesse Brandeburg 已提交
10503 10504 10505 10506 10507 10508 10509 10510 10511 10512 10513 10514 10515 10516 10517 10518 10519 10520 10521 10522 10523 10524 10525 10526 10527
	err = i40e_get_capabilities(pf);
	if (err)
		goto err_adminq_setup;

	err = i40e_sw_init(pf);
	if (err) {
		dev_info(&pdev->dev, "sw_init failed: %d\n", err);
		goto err_sw_init;
	}

	err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
				hw->func_caps.num_rx_qp,
				pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
	if (err) {
		dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
		goto err_init_lan_hmc;
	}

	err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
	if (err) {
		dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
		err = -ENOENT;
		goto err_configure_lan_hmc;
	}

10528 10529 10530 10531 10532 10533 10534 10535 10536 10537
	/* Disable LLDP for NICs that have firmware versions lower than v4.3.
	 * Ignore error return codes because if it was already disabled via
	 * hardware settings this will fail
	 */
	if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
	    (pf->hw.aq.fw_maj_ver < 4)) {
		dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
		i40e_aq_stop_lldp(hw, true, NULL);
	}

J
Jesse Brandeburg 已提交
10538
	i40e_get_mac_addr(hw, hw->mac.addr);
10539
	if (!is_valid_ether_addr(hw->mac.addr)) {
J
Jesse Brandeburg 已提交
10540 10541 10542 10543 10544
		dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
		err = -EIO;
		goto err_mac_addr;
	}
	dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10545
	ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10546 10547 10548
	i40e_get_port_mac_addr(hw, hw->mac.port_addr);
	if (is_valid_ether_addr(hw->mac.port_addr))
		pf->flags |= I40E_FLAG_PORT_ID_VALID;
10549 10550 10551 10552 10553 10554 10555 10556 10557 10558 10559 10560
#ifdef I40E_FCOE
	err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
	if (err)
		dev_info(&pdev->dev,
			 "(non-fatal) SAN MAC retrieval failed: %d\n", err);
	if (!is_valid_ether_addr(hw->mac.san_addr)) {
		dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
			 hw->mac.san_addr);
		ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
	}
	dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
#endif /* I40E_FCOE */
J
Jesse Brandeburg 已提交
10561 10562 10563

	pci_set_drvdata(pdev, pf);
	pci_save_state(pdev);
N
Neerav Parikh 已提交
10564 10565 10566
#ifdef CONFIG_I40E_DCB
	err = i40e_init_pf_dcb(pf);
	if (err) {
10567
		dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10568
		pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10569
		/* Continue without DCB enabled */
N
Neerav Parikh 已提交
10570 10571
	}
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
10572 10573 10574 10575 10576 10577 10578 10579 10580

	/* set up periodic task facility */
	setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
	pf->service_timer_period = HZ;

	INIT_WORK(&pf->service_task, i40e_service_task);
	clear_bit(__I40E_SERVICE_SCHED, &pf->state);
	pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;

10581 10582 10583 10584 10585 10586
	/* NVM bit on means WoL disabled for the port */
	i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
	if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
		pf->wol_en = false;
	else
		pf->wol_en = true;
S
Shannon Nelson 已提交
10587 10588
	device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);

J
Jesse Brandeburg 已提交
10589 10590
	/* set up the main switch operations */
	i40e_determine_queue_usage(pf);
10591 10592 10593
	err = i40e_init_interrupt_scheme(pf);
	if (err)
		goto err_switch_setup;
J
Jesse Brandeburg 已提交
10594

M
Mitch Williams 已提交
10595 10596 10597 10598
	/* The number of VSIs reported by the FW is the minimum guaranteed
	 * to us; HW supports far more and we share the remaining pool with
	 * the other PFs. We allocate space for more than the guarantee with
	 * the understanding that we might not get them all later.
J
Jesse Brandeburg 已提交
10599
	 */
M
Mitch Williams 已提交
10600 10601 10602 10603 10604 10605 10606
	if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
		pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
	else
		pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;

	/* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
	len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
J
Jesse Brandeburg 已提交
10607
	pf->vsi = kzalloc(len, GFP_KERNEL);
10608 10609
	if (!pf->vsi) {
		err = -ENOMEM;
J
Jesse Brandeburg 已提交
10610
		goto err_switch_setup;
10611
	}
J
Jesse Brandeburg 已提交
10612

10613 10614 10615 10616 10617 10618 10619 10620 10621
#ifdef CONFIG_PCI_IOV
	/* prep for VF support */
	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
	    (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
	    !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
		if (pci_num_vf(pdev))
			pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
	}
#endif
10622
	err = i40e_setup_pf_switch(pf, false);
J
Jesse Brandeburg 已提交
10623 10624 10625 10626
	if (err) {
		dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
		goto err_vsis;
	}
10627 10628 10629 10630 10631 10632 10633 10634 10635 10636 10637 10638 10639 10640 10641 10642 10643 10644 10645

	/* Make sure flow control is set according to current settings */
	err = i40e_set_fc(hw, &set_fc_aq_fail, true);
	if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
		dev_dbg(&pf->pdev->dev,
			"Set fc with err %s aq_err %s on get_phy_cap\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));
	if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
		dev_dbg(&pf->pdev->dev,
			"Set fc with err %s aq_err %s on set_phy_config\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));
	if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
		dev_dbg(&pf->pdev->dev,
			"Set fc with err %s aq_err %s on get_link_info\n",
			i40e_stat_str(hw, err),
			i40e_aq_str(hw, hw->aq.asq_last_status));

10646
	/* if FDIR VSI was set up, start it now */
M
Mitch Williams 已提交
10647
	for (i = 0; i < pf->num_alloc_vsi; i++) {
10648 10649 10650 10651 10652
		if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
			i40e_vsi_open(pf->vsi[i]);
			break;
		}
	}
J
Jesse Brandeburg 已提交
10653

J
Jesse Brandeburg 已提交
10654 10655 10656 10657 10658 10659 10660
	/* driver is only interested in link up/down and module qualification
	 * reports from firmware
	 */
	err = i40e_aq_set_phy_int_mask(&pf->hw,
				       I40E_AQ_EVENT_LINK_UPDOWN |
				       I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
	if (err)
10661 10662 10663
		dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
			 i40e_stat_str(&pf->hw, err),
			 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
J
Jesse Brandeburg 已提交
10664

10665 10666 10667 10668 10669 10670 10671 10672 10673 10674 10675
	/* Reconfigure hardware for allowing smaller MSS in the case
	 * of TSO, so that we avoid the MDD being fired and causing
	 * a reset in the case of small MSS+TSO.
	 */
	val = rd32(hw, I40E_REG_MSS);
	if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
		val &= ~I40E_REG_MSS_MIN_MASK;
		val |= I40E_64BYTE_MSS;
		wr32(hw, I40E_REG_MSS, val);
	}

10676 10677 10678 10679 10680
	if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
	    (pf->hw.aq.fw_maj_ver < 4)) {
		msleep(75);
		err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
		if (err)
10681 10682 10683 10684
			dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
				 i40e_stat_str(&pf->hw, err),
				 i40e_aq_str(&pf->hw,
					     pf->hw.aq.asq_last_status));
10685
	}
J
Jesse Brandeburg 已提交
10686 10687 10688 10689 10690 10691 10692 10693 10694 10695 10696 10697 10698 10699 10700 10701 10702 10703 10704 10705
	/* The main driver is (mostly) up and happy. We need to set this state
	 * before setting up the misc vector or we get a race and the vector
	 * ends up disabled forever.
	 */
	clear_bit(__I40E_DOWN, &pf->state);

	/* In case of MSIX we are going to setup the misc vector right here
	 * to handle admin queue events etc. In case of legacy and MSI
	 * the misc functionality and queue processing is combined in
	 * the same vector and that gets setup at open.
	 */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		err = i40e_setup_misc_vector(pf);
		if (err) {
			dev_info(&pdev->dev,
				 "setup of misc vector failed: %d\n", err);
			goto err_vsis;
		}
	}

10706
#ifdef CONFIG_PCI_IOV
J
Jesse Brandeburg 已提交
10707 10708
	/* prep for VF support */
	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10709 10710
	    (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
	    !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
J
Jesse Brandeburg 已提交
10711 10712 10713 10714 10715 10716 10717
		u32 val;

		/* disable link interrupts for VFs */
		val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
		val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
		wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
		i40e_flush(hw);
M
Mitch Williams 已提交
10718 10719 10720 10721 10722 10723 10724 10725 10726 10727

		if (pci_num_vf(pdev)) {
			dev_info(&pdev->dev,
				 "Active VFs found, allocating resources.\n");
			err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
			if (err)
				dev_info(&pdev->dev,
					 "Error %d allocating resources for existing VFs\n",
					 err);
		}
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	}
10729
#endif /* CONFIG_PCI_IOV */
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10731 10732
	pfs_found++;

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10733 10734 10735
	i40e_dbg_pf_init(pf);

	/* tell the firmware that we're starting */
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10736
	i40e_send_version(pf);
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10737 10738 10739 10740 10741

	/* since everything's happy, start the service_task timer */
	mod_timer(&pf->service_timer,
		  round_jiffies(jiffies + pf->service_timer_period));

10742 10743 10744 10745 10746
#ifdef I40E_FCOE
	/* create FCoE interface */
	i40e_fcoe_vsi_setup(pf);

#endif
10747 10748 10749 10750 10751 10752 10753 10754 10755 10756 10757 10758 10759 10760 10761 10762 10763 10764 10765 10766 10767 10768 10769 10770 10771 10772 10773 10774 10775 10776 10777 10778 10779 10780 10781 10782 10783 10784 10785 10786 10787 10788 10789 10790 10791 10792 10793 10794 10795
#define PCI_SPEED_SIZE 8
#define PCI_WIDTH_SIZE 8
	/* Devices on the IOSF bus do not have this information
	 * and will report PCI Gen 1 x 1 by default so don't bother
	 * checking them.
	 */
	if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
		char speed[PCI_SPEED_SIZE] = "Unknown";
		char width[PCI_WIDTH_SIZE] = "Unknown";

		/* Get the negotiated link width and speed from PCI config
		 * space
		 */
		pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
					  &link_status);

		i40e_set_pci_config_data(hw, link_status);

		switch (hw->bus.speed) {
		case i40e_bus_speed_8000:
			strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
		case i40e_bus_speed_5000:
			strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
		case i40e_bus_speed_2500:
			strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
		default:
			break;
		}
		switch (hw->bus.width) {
		case i40e_bus_width_pcie_x8:
			strncpy(width, "8", PCI_WIDTH_SIZE); break;
		case i40e_bus_width_pcie_x4:
			strncpy(width, "4", PCI_WIDTH_SIZE); break;
		case i40e_bus_width_pcie_x2:
			strncpy(width, "2", PCI_WIDTH_SIZE); break;
		case i40e_bus_width_pcie_x1:
			strncpy(width, "1", PCI_WIDTH_SIZE); break;
		default:
			break;
		}

		dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
			 speed, width);

		if (hw->bus.width < i40e_bus_width_pcie_x8 ||
		    hw->bus.speed < i40e_bus_speed_8000) {
			dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
			dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
		}
10796 10797
	}

10798 10799 10800
	/* get the requested speeds from the fw */
	err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
	if (err)
10801 10802 10803
		dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
			i40e_stat_str(&pf->hw, err),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10804 10805
	pf->hw.phy.link_info.requested_speeds = abilities.link_speed;

10806 10807 10808 10809 10810 10811 10812 10813
	/* get the supported phy types from the fw */
	err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
	if (err)
		dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
			i40e_stat_str(&pf->hw, err),
			i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
	pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);

10814 10815 10816 10817 10818 10819 10820 10821 10822
	/* Add a filter to drop all Flow control frames from any VSI from being
	 * transmitted. By doing so we stop a malicious VF from sending out
	 * PAUSE or PFC frames and potentially controlling traffic for other
	 * PF/VF VSIs.
	 * The FW can still send Flow control frames if enabled.
	 */
	i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
						       pf->main_vsi_seid);

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	/* print a string summarizing features */
	i40e_print_features(pf);

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10826 10827 10828 10829 10830 10831 10832
	return 0;

	/* Unwind what we've done if something failed in the setup */
err_vsis:
	set_bit(__I40E_DOWN, &pf->state);
	i40e_clear_interrupt_scheme(pf);
	kfree(pf->vsi);
10833 10834
err_switch_setup:
	i40e_reset_interrupt_capability(pf);
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10835 10836 10837 10838 10839 10840 10841 10842 10843 10844 10845 10846 10847 10848 10849 10850 10851 10852 10853 10854 10855 10856 10857 10858 10859 10860 10861 10862 10863 10864 10865 10866 10867 10868 10869
	del_timer_sync(&pf->service_timer);
err_mac_addr:
err_configure_lan_hmc:
	(void)i40e_shutdown_lan_hmc(hw);
err_init_lan_hmc:
	kfree(pf->qp_pile);
err_sw_init:
err_adminq_setup:
	(void)i40e_shutdown_adminq(hw);
err_pf_reset:
	iounmap(hw->hw_addr);
err_ioremap:
	kfree(pf);
err_pf_alloc:
	pci_disable_pcie_error_reporting(pdev);
	pci_release_selected_regions(pdev,
				     pci_select_bars(pdev, IORESOURCE_MEM));
err_pci_reg:
err_dma:
	pci_disable_device(pdev);
	return err;
}

/**
 * i40e_remove - Device removal routine
 * @pdev: PCI device information struct
 *
 * i40e_remove is called by the PCI subsystem to alert the driver
 * that is should release a PCI device.  This could be caused by a
 * Hot-Plug event, or because the driver is going to be removed from
 * memory.
 **/
static void i40e_remove(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);
10870
	struct i40e_hw *hw = &pf->hw;
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	i40e_status ret_code;
	int i;

	i40e_dbg_pf_exit(pf);

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	i40e_ptp_stop(pf);

10878 10879 10880 10881
	/* Disable RSS in hw */
	wr32(hw, I40E_PFQF_HENA(0), 0);
	wr32(hw, I40E_PFQF_HENA(1), 0);

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	/* no more scheduling of any task */
	set_bit(__I40E_DOWN, &pf->state);
	del_timer_sync(&pf->service_timer);
	cancel_work_sync(&pf->service_task);
10886
	i40e_fdir_teardown(pf);
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10888 10889 10890 10891 10892
	if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
		i40e_free_vfs(pf);
		pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
	}

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10893 10894 10895 10896 10897 10898 10899 10900 10901 10902 10903 10904 10905 10906 10907 10908 10909 10910 10911 10912 10913
	i40e_fdir_teardown(pf);

	/* If there is a switch structure or any orphans, remove them.
	 * This will leave only the PF's VSI remaining.
	 */
	for (i = 0; i < I40E_MAX_VEB; i++) {
		if (!pf->veb[i])
			continue;

		if (pf->veb[i]->uplink_seid == pf->mac_seid ||
		    pf->veb[i]->uplink_seid == 0)
			i40e_switch_branch_release(pf->veb[i]);
	}

	/* Now we can shutdown the PF's VSI, just before we kill
	 * adminq and hmc.
	 */
	if (pf->vsi[pf->lan_vsi])
		i40e_vsi_release(pf->vsi[pf->lan_vsi]);

	/* shutdown and destroy the HMC */
10914 10915 10916 10917 10918 10919 10920
	if (pf->hw.hmc.hmc_obj) {
		ret_code = i40e_shutdown_lan_hmc(&pf->hw);
		if (ret_code)
			dev_warn(&pdev->dev,
				 "Failed to destroy the HMC resources: %d\n",
				 ret_code);
	}
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10921 10922 10923 10924 10925 10926 10927 10928 10929 10930

	/* shutdown the adminq */
	ret_code = i40e_shutdown_adminq(&pf->hw);
	if (ret_code)
		dev_warn(&pdev->dev,
			 "Failed to destroy the Admin Queue resources: %d\n",
			 ret_code);

	/* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
	i40e_clear_interrupt_scheme(pf);
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	for (i = 0; i < pf->num_alloc_vsi; i++) {
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		if (pf->vsi[i]) {
			i40e_vsi_clear_rings(pf->vsi[i]);
			i40e_vsi_clear(pf->vsi[i]);
			pf->vsi[i] = NULL;
		}
	}

	for (i = 0; i < I40E_MAX_VEB; i++) {
		kfree(pf->veb[i]);
		pf->veb[i] = NULL;
	}

	kfree(pf->qp_pile);
	kfree(pf->vsi);

	iounmap(pf->hw.hw_addr);
	kfree(pf);
	pci_release_selected_regions(pdev,
				     pci_select_bars(pdev, IORESOURCE_MEM));

	pci_disable_pcie_error_reporting(pdev);
	pci_disable_device(pdev);
}

/**
 * i40e_pci_error_detected - warning that something funky happened in PCI land
 * @pdev: PCI device information struct
 *
 * Called to warn that something happened and the error handling steps
 * are in progress.  Allows the driver to quiesce things, be ready for
 * remediation.
 **/
static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
						enum pci_channel_state error)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

	dev_info(&pdev->dev, "%s: error %d\n", __func__, error);

	/* shutdown all operations */
10972 10973 10974 10975 10976
	if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
		rtnl_lock();
		i40e_prep_for_reset(pf);
		rtnl_unlock();
	}
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	/* Request a slot reset */
	return PCI_ERS_RESULT_NEED_RESET;
}

/**
 * i40e_pci_error_slot_reset - a PCI slot reset just happened
 * @pdev: PCI device information struct
 *
 * Called to find if the driver can work with the device now that
 * the pci slot has been reset.  If a basic connection seems good
 * (registers are readable and have sane content) then return a
 * happy little PCI_ERS_RESULT_xxx.
 **/
static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);
	pci_ers_result_t result;
	int err;
	u32 reg;

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	dev_dbg(&pdev->dev, "%s\n", __func__);
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	if (pci_enable_device_mem(pdev)) {
		dev_info(&pdev->dev,
			 "Cannot re-enable PCI device after reset.\n");
		result = PCI_ERS_RESULT_DISCONNECT;
	} else {
		pci_set_master(pdev);
		pci_restore_state(pdev);
		pci_save_state(pdev);
		pci_wake_from_d3(pdev, false);

		reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		if (reg == 0)
			result = PCI_ERS_RESULT_RECOVERED;
		else
			result = PCI_ERS_RESULT_DISCONNECT;
	}

	err = pci_cleanup_aer_uncorrect_error_status(pdev);
	if (err) {
		dev_info(&pdev->dev,
			 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
			 err);
		/* non-fatal, continue */
	}

	return result;
}

/**
 * i40e_pci_error_resume - restart operations after PCI error recovery
 * @pdev: PCI device information struct
 *
 * Called to allow the driver to bring things back up after PCI error
 * and/or reset recovery has finished.
 **/
static void i40e_pci_error_resume(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);

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11038
	dev_dbg(&pdev->dev, "%s\n", __func__);
11039 11040 11041 11042
	if (test_bit(__I40E_SUSPENDED, &pf->state))
		return;

	rtnl_lock();
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11043
	i40e_handle_reset_warning(pf);
11044
	rtnl_unlock();
11045 11046 11047 11048 11049 11050 11051 11052 11053
}

/**
 * i40e_shutdown - PCI callback for shutting down
 * @pdev: PCI device information struct
 **/
static void i40e_shutdown(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);
S
Shannon Nelson 已提交
11054
	struct i40e_hw *hw = &pf->hw;
11055 11056 11057 11058 11059 11060 11061

	set_bit(__I40E_SUSPENDED, &pf->state);
	set_bit(__I40E_DOWN, &pf->state);
	rtnl_lock();
	i40e_prep_for_reset(pf);
	rtnl_unlock();

S
Shannon Nelson 已提交
11062 11063 11064
	wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
	wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));

11065 11066 11067 11068 11069 11070 11071 11072 11073 11074 11075 11076 11077
	del_timer_sync(&pf->service_timer);
	cancel_work_sync(&pf->service_task);
	i40e_fdir_teardown(pf);

	rtnl_lock();
	i40e_prep_for_reset(pf);
	rtnl_unlock();

	wr32(hw, I40E_PFPM_APM,
	     (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
	wr32(hw, I40E_PFPM_WUFC,
	     (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));

11078 11079
	i40e_clear_interrupt_scheme(pf);

11080
	if (system_state == SYSTEM_POWER_OFF) {
S
Shannon Nelson 已提交
11081
		pci_wake_from_d3(pdev, pf->wol_en);
11082 11083 11084 11085 11086 11087 11088 11089 11090 11091 11092 11093
		pci_set_power_state(pdev, PCI_D3hot);
	}
}

#ifdef CONFIG_PM
/**
 * i40e_suspend - PCI callback for moving to D3
 * @pdev: PCI device information struct
 **/
static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);
S
Shannon Nelson 已提交
11094
	struct i40e_hw *hw = &pf->hw;
11095 11096 11097

	set_bit(__I40E_SUSPENDED, &pf->state);
	set_bit(__I40E_DOWN, &pf->state);
11098

11099 11100 11101 11102
	rtnl_lock();
	i40e_prep_for_reset(pf);
	rtnl_unlock();

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11103 11104 11105 11106
	wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
	wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));

	pci_wake_from_d3(pdev, pf->wol_en);
11107 11108 11109
	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
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11110 11111
}

11112 11113 11114 11115 11116 11117 11118 11119 11120 11121 11122 11123 11124 11125 11126 11127 11128 11129
/**
 * i40e_resume - PCI callback for waking up from D3
 * @pdev: PCI device information struct
 **/
static int i40e_resume(struct pci_dev *pdev)
{
	struct i40e_pf *pf = pci_get_drvdata(pdev);
	u32 err;

	pci_set_power_state(pdev, PCI_D0);
	pci_restore_state(pdev);
	/* pci_restore_state() clears dev->state_saves, so
	 * call pci_save_state() again to restore it.
	 */
	pci_save_state(pdev);

	err = pci_enable_device_mem(pdev);
	if (err) {
S
Shannon Nelson 已提交
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		dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11131 11132 11133 11134 11135 11136 11137 11138 11139 11140 11141 11142 11143 11144 11145 11146 11147 11148 11149
		return err;
	}
	pci_set_master(pdev);

	/* no wakeup events while running */
	pci_wake_from_d3(pdev, false);

	/* handling the reset will rebuild the device state */
	if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
		clear_bit(__I40E_DOWN, &pf->state);
		rtnl_lock();
		i40e_reset_and_rebuild(pf, false);
		rtnl_unlock();
	}

	return 0;
}

#endif
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static const struct pci_error_handlers i40e_err_handler = {
	.error_detected = i40e_pci_error_detected,
	.slot_reset = i40e_pci_error_slot_reset,
	.resume = i40e_pci_error_resume,
};

static struct pci_driver i40e_driver = {
	.name     = i40e_driver_name,
	.id_table = i40e_pci_tbl,
	.probe    = i40e_probe,
	.remove   = i40e_remove,
11161 11162 11163 11164 11165
#ifdef CONFIG_PM
	.suspend  = i40e_suspend,
	.resume   = i40e_resume,
#endif
	.shutdown = i40e_shutdown,
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	.err_handler = &i40e_err_handler,
	.sriov_configure = i40e_pci_sriov_configure,
};

/**
 * i40e_init_module - Driver registration routine
 *
 * i40e_init_module is the first routine called when the driver is
 * loaded. All it does is register with the PCI subsystem.
 **/
static int __init i40e_init_module(void)
{
	pr_info("%s: %s - version %s\n", i40e_driver_name,
		i40e_driver_string, i40e_driver_version_str);
	pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11181

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	i40e_dbg_init();
	return pci_register_driver(&i40e_driver);
}
module_init(i40e_init_module);

/**
 * i40e_exit_module - Driver exit cleanup routine
 *
 * i40e_exit_module is called just before the driver is removed
 * from memory.
 **/
static void __exit i40e_exit_module(void)
{
	pci_unregister_driver(&i40e_driver);
	i40e_dbg_exit();
}
module_exit(i40e_exit_module);