i40e_main.c 278.8 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 2
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#define DRV_VERSION_BUILD 43
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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_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_20G_KR2), 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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		} else {
			/* not enough, so skip over it and continue looking */
			i += j;
		}
	}

	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;
}

/**
 * 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;

	pf->tx_timeout_count++;

	if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
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		pf->tx_timeout_recovery_level = 1;
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	pf->tx_timeout_last_recovery = jiffies;
	netdev_info(netdev, "tx_timeout recovery level %d\n",
		    pf->tx_timeout_recovery_level);

	switch (pf->tx_timeout_recovery_level) {
	case 0:
		/* disable and re-enable queues for the VSI */
		if (in_interrupt()) {
			set_bit(__I40E_REINIT_REQUESTED, &pf->state);
			set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
		} else {
			i40e_vsi_reinit_locked(vsi);
		}
		break;
	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");
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		set_bit(__I40E_DOWN_REQUESTED, &pf->state);
		set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
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		break;
	}
	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;
	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 ,
			       sizeof(vsi->rx_rings[i]->stats));
			memset(&vsi->rx_rings[i]->rx_stats, 0 ,
			       sizeof(vsi->rx_rings[i]->rx_stats));
			memset(&vsi->tx_rings[i]->stats, 0 ,
			       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
		*stat = (new_data + ((u64)1 << 48)) - *offset;
	*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
		*stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
}

/**
 * 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 */
	int idx = 0;

	idx = veb->stats_idx;
	es = &veb->stats;
	oes = &veb->stats_offsets;

	/* 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);
	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;
	u16 i, v;

	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;

	/* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
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	for (v = 0; v < pf->num_alloc_vsi; v++) {
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		struct i40e_vsi *vsi = pf->vsi[v];

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		if (!vsi || !vsi->tx_rings[0])
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			continue;

		for (i = 0; i < vsi->num_queue_pairs; i++) {
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			struct i40e_ring *ring = vsi->tx_rings[i];
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			clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
		}
	}
}

/**
 * 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;
	u16 i, v;
	u8 tc;

	dcb_cfg = &hw->local_dcbx_config;

	/* See if DCB enabled with PFC TC */
	if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
	    !(dcb_cfg->pfc.pfcenable)) {
		i40e_update_link_xoff_rx(pf);
		return;
	}

	for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
		u64 prio_xoff = nsd->priority_xoff_rx[i];
		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;
	}

	/* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
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	for (v = 0; v < pf->num_alloc_vsi; v++) {
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		struct i40e_vsi *vsi = pf->vsi[v];

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		if (!vsi || !vsi->tx_rings[0])
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			continue;

		for (i = 0; i < vsi->num_queue_pairs; i++) {
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			struct i40e_ring *ring = vsi->tx_rings[i];
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			tc = ring->dcb_tc;
			if (xoff[tc])
				clear_bit(__I40E_HANG_CHECK_ARMED,
					  &ring->state);
		}
	}
}

/**
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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 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;
	tx_restart = tx_busy = 0;
	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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		/* 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;
	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),
1007
				   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);

1083 1084 1085 1086 1087 1088 1089 1090
	/* FDIR stats */
	i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
			   pf->stat_offsets_loaded,
			   &osd->fd_atr_match, &nsd->fd_atr_match);
	i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
			   pf->stat_offsets_loaded,
			   &osd->fd_sb_match, &nsd->fd_sb_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);

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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);
1122 1123 1124
#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
1132
 * @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
1160
 * @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) {
		if (f->vlan >= 0)
			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
1208
 * @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) {
		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);
}

1234 1235 1236 1237
/**
 * 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
1238 1239 1240
 *
 * Some older firmware configurations set up a default promiscuous VLAN
 * filter that needs to be removed.
1241
 **/
1242
static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1243 1244 1245 1246 1247 1248 1249
{
	struct i40e_aqc_remove_macvlan_element_data element;
	struct i40e_pf *pf = vsi->back;
	i40e_status aq_ret;

	/* Only appropriate for the PF main VSI */
	if (vsi->type != I40E_VSI_MAIN)
1250
		return -EINVAL;
1251

1252
	memset(&element, 0, sizeof(element));
1253 1254 1255 1256 1257 1258
	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;
	aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
	if (aq_ret)
1259 1260 1261
		return -ENOENT;

	return 0;
1262 1263
}

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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
1269
 * @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.
 **/
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;

1289
		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
1329
 * @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
 **/
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 {
1356
		/* make sure we don't remove a filter in use by VF or netdev */
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		int min_f = 0;
		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
 **/
1382 1383 1384
#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)
1386
#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
1390 1391
	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;

1398 1399 1400 1401 1402
	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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1404 1405 1406 1407
	if (test_bit(__I40E_DOWN, &vsi->back->state) ||
	    test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
		return -EADDRNOTAVAIL;

1408 1409 1410 1411 1412 1413
	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;
		ret = i40e_aq_mac_address_write(&vsi->back->hw,
1417
						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;
		}
	}

1427 1428
	if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
		struct i40e_aqc_remove_macvlan_element_data element;
1429

1430 1431 1432 1433 1434
		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 {
1435 1436 1437
		i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
				false, false);
	}
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1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454
	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 {
		f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
				    false, false);
		if (f)
			f->is_laa = true;
	}

	i40e_sync_vsi_filters(vsi);
	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.
 **/
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#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)
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#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++) {
			if (enabled_tc & (1 << i)) /* TC is enabled */
				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 */
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	/* In MFP case we can have a much lower count of MSIx
	 * vectors available and so we need to lower the used
	 * q count.
	 */
	qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
	num_tc_qps = qcount / numtc;
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	num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
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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 */
		if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
			int pow, num_qps;

			switch (vsi->type) {
			case I40E_VSI_MAIN:
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				qcount = min_t(int, pf->rss_size, num_tc_qps);
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				break;
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#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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			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;
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			while (num_qps && ((1 << 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;
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	if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
		if (vsi->req_queue_pairs > 0)
			vsi->num_queue_pairs = vsi->req_queue_pairs;
		else
			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
 **/
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#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)
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#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;

	/* 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) {
		bool found = false;

		if (!f->is_netdev)
			continue;

		if (is_multicast_ether_addr(f->macaddr)) {
			netdev_for_each_mc_addr(mca, netdev) {
				if (ether_addr_equal(mca->addr, f->macaddr)) {
					found = true;
					break;
				}
			}
		} else {
			netdev_for_each_uc_addr(uca, netdev) {
				if (ether_addr_equal(uca->addr, f->macaddr)) {
					found = true;
					break;
				}
			}

			for_each_dev_addr(netdev, ha) {
				if (ether_addr_equal(ha->addr, f->macaddr)) {
					found = true;
					break;
				}
			}
		}
		if (!found)
			i40e_del_filter(
			   vsi, f->macaddr, I40E_VLAN_ANY, false, true);
	}

	/* 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;
	}
}

/**
 * i40e_sync_vsi_filters - Update the VSI filter list to the HW
 * @vsi: ptr to the VSI
 *
 * Push any outstanding VSI filter changes through the AdminQ.
 *
 * Returns 0 or error value
 **/
int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
{
	struct i40e_mac_filter *f, *ftmp;
	bool promisc_forced_on = false;
	bool add_happened = false;
	int filter_list_len = 0;
	u32 changed_flags = 0;
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	i40e_status aq_ret = 0;
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	struct i40e_pf *pf;
	int num_add = 0;
	int num_del = 0;
	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;
	}

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

		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)
			return -ENOMEM;

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

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

			/* add to delete list */
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			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++;

			/* unlink from filter list */
			list_del(&f->list);
			kfree(f);

			/* flush a full buffer */
			if (num_del == filter_list_len) {
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				aq_ret = i40e_aq_remove_macvlan(&pf->hw,
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					    vsi->seid, del_list, num_del,
					    NULL);
				num_del = 0;
				memset(del_list, 0, sizeof(*del_list));

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				if (aq_ret &&
				    pf->hw.aq.asq_last_status !=
							      I40E_AQ_RC_ENOENT)
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					dev_info(&pf->pdev->dev,
						 "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
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						 aq_ret,
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						 pf->hw.aq.asq_last_status);
			}
		}
		if (num_del) {
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			aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
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						     del_list, num_del, NULL);
			num_del = 0;

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			if (aq_ret &&
			    pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
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				dev_info(&pf->pdev->dev,
					 "ignoring delete macvlan error, err %d, aq_err %d\n",
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					 aq_ret, pf->hw.aq.asq_last_status);
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		}

		kfree(del_list);
		del_list = NULL;

		/* 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);
		if (!add_list)
			return -ENOMEM;

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

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

			/* add to add array */
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			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) {
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				aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
							     add_list, num_add,
							     NULL);
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				num_add = 0;

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				if (aq_ret)
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					break;
				memset(add_list, 0, sizeof(*add_list));
			}
		}
		if (num_add) {
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			aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
						     add_list, num_add, NULL);
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			num_add = 0;
		}
		kfree(add_list);
		add_list = NULL;

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		if (add_happened && aq_ret &&
		    pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
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			dev_info(&pf->pdev->dev,
				 "add filter failed, err %d, aq_err %d\n",
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				 aq_ret, pf->hw.aq.asq_last_status);
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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;
		cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
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		aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
							       vsi->seid,
							       cur_multipromisc,
							       NULL);
		if (aq_ret)
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			dev_info(&pf->pdev->dev,
				 "set multi promisc failed, err %d, aq_err %d\n",
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				 aq_ret, pf->hw.aq.asq_last_status);
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	}
	if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
		bool cur_promisc;
		cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
			       test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
					&vsi->state));
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		aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
							     vsi->seid,
							     cur_promisc, NULL);
		if (aq_ret)
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			dev_info(&pf->pdev->dev,
				 "set uni promisc failed, err %d, aq_err %d\n",
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				 aq_ret, pf->hw.aq.asq_last_status);
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		aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
						   vsi->seid,
						   cur_promisc, NULL);
		if (aq_ret)
			dev_info(&pf->pdev->dev,
				 "set brdcast promisc failed, err %d, aq_err %d\n",
				 aq_ret, 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))
			i40e_sync_vsi_filters(pf->vsi[v]);
	}
}

/**
 * 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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/**
 * 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;
	memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
			 "%s: update vsi failed, aq_err=%d\n",
			 __func__, vsi->back->hw.aq.asq_last_status);
	}
}

/**
 * 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;
	memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
	ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (ret) {
		dev_info(&vsi->back->pdev->dev,
			 "%s: update vsi failed, aq_err=%d\n",
			 __func__, vsi->back->hw.aq.asq_last_status);
	}
}

/**
 * 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);

	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);
			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);
			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);
				return -ENOMEM;
			}
		}
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	}
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	/* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
	if (vid > 0 && !vsi->info.pvid) {
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		list_for_each_entry(f, &vsi->mac_filter_list, list) {
			if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
					     is_vf, is_netdev)) {
				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);
					return -ENOMEM;
				}
			}
		}
	}

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

	return i40e_sync_vsi_filters(vsi);
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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);

	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);
			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,
					    is_vf, is_netdev);
			if (!add_f) {
				dev_info(&vsi->back->pdev->dev,
					 "Could not add filter %d for %pM\n",
					 I40E_VLAN_ANY, f->macaddr);
				return -ENOMEM;
			}
		}
	}

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

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	return i40e_sync_vsi_filters(vsi);
}

/**
 * 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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 **/
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#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)
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#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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	/* 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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	 */
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	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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 *
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 * net_device_ops implementation for removing vlan ids
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 **/
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#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)
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#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
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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;
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	i40e_status aq_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;
	memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
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	aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (aq_ret) {
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		dev_info(&vsi->back->pdev->dev,
			 "%s: update vsi failed, aq_err=%d\n",
			 __func__, 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++)
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		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;

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	if (!vsi->tx_rings)
		return;

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	for (i = 0; i < vsi->num_queue_pairs; i++)
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		if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
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			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++)
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		err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
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#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;

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	if (!vsi->rx_rings)
		return;

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	for (i = 0; i < vsi->num_queue_pairs; i++)
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		if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2385
			i40e_free_rx_resources(vsi->rx_rings[i]);
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#ifdef I40E_FCOE
	i40e_fcoe_free_ddp_resources(vsi);
#endif
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}

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/**
 * 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;

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	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))
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			netif_set_xps_queue(ring->netdev,
					    &ring->q_vector->affinity_mask,
					    ring->queue_index);
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	} 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);
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	}
}

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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;
	}

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	/* 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));
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#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);
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	/* 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) {
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		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 {
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		qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
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	}

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	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);

	clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);

	/* 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));
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	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;
	rx_ctx.showiv = 1;
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#ifdef I40E_FCOE
	rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
#endif
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	/* set the prefena field to 1 because the manual says to */
	rx_ctx.prefena = 1;
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	/* 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);

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	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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	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;

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	for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
		err = i40e_configure_tx_ring(vsi->tx_rings[i]);
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	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;
	}

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#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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	/* round up for the chip's needs */
	vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
				(1 << I40E_RXQ_CTX_HBUFF_SHIFT));
	vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
				(1 << I40E_RXQ_CTX_DBUFF_SHIFT));

	/* set up individual rings */
	for (i = 0; i < vsi->num_queue_pairs && !err; i++)
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		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)
{
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	struct i40e_ring *tx_ring, *rx_ring;
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	u16 qoffset, qcount;
	int i, n;

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	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++) {
		if (!(vsi->tc_config.enabled_tc & (1 << n)))
			continue;

		qoffset = vsi->tc_config.tc_info[n].qoffset;
		qcount = vsi->tc_config.tc_info[n].qcount;
		for (i = qoffset; i < (qoffset + qcount); i++) {
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			rx_ring = vsi->rx_rings[i];
			tx_ring = vsi->tx_rings[i];
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			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);
}

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/**
 * 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;

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

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	hlist_for_each_entry_safe(filter, node,
				  &pf->fdir_filter_list, fdir_node) {
		i40e_add_del_fdir(vsi, filter, true);
	}
}

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/**
 * 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_q_vector *q_vector;
	struct i40e_hw *hw = &pf->hw;
	u16 vector;
	int i, q;
	u32 val;
	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;
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	for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
		q_vector = vsi->q_vectors[i];
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		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);

		/* 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++) {
			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
 **/
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static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
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{
2843
	struct i40e_hw *hw = &pf->hw;
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	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;

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

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	wr32(hw, I40E_PFINT_ICR0_ENA, val);

	/* SW_ITR_IDX = 0, but don't change INTENA */
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	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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	/* 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)
{
2878
	struct i40e_q_vector *q_vector = vsi->q_vectors[0];
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	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u32 val;

	/* set the ITR configuration */
	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);

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	i40e_enable_misc_int_causes(pf);
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	/* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
	wr32(hw, I40E_PFINT_LNKLST0, 0);

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	/* Associate the queue pair to the vector and enable the queue int */
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	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);
}

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/**
 * 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);
}

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/**
 * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
 * @pf: board private structure
 **/
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void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
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{
	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);
}

/**
 * i40e_irq_dynamic_enable - Enable default interrupt generation settings
 * @vsi: pointer to a vsi
 * @vector: enable a particular Hw Interrupt vector
 **/
void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u32 val;

	val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
	      I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
	      (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
	wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2956
	/* skip the flush */
J
Jesse Brandeburg 已提交
2957 2958
}

2959 2960 2961
/**
 * i40e_irq_dynamic_disable - Disable default interrupt generation settings
 * @vsi: pointer to a vsi
G
Greg Rose 已提交
2962
 * @vector: disable a particular Hw Interrupt vector
2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974
 **/
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);
}

J
Jesse Brandeburg 已提交
2975 2976 2977 2978 2979 2980 2981 2982 2983
/**
 * 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;

2984
	if (!q_vector->tx.ring && !q_vector->rx.ring)
J
Jesse Brandeburg 已提交
2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008
		return IRQ_HANDLED;

	napi_schedule(&q_vector->napi);

	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++) {
3009
		struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
J
Jesse Brandeburg 已提交
3010

3011
		if (q_vector->tx.ring && q_vector->rx.ring) {
J
Jesse Brandeburg 已提交
3012 3013 3014
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "TxRx", rx_int_idx++);
			tx_int_idx++;
3015
		} else if (q_vector->rx.ring) {
J
Jesse Brandeburg 已提交
3016 3017
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "rx", rx_int_idx++);
3018
		} else if (q_vector->tx.ring) {
J
Jesse Brandeburg 已提交
3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040
			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: request_irq failed, error: %d\n",
				 __func__, err);
			goto free_queue_irqs;
		}
		/* assign the mask for this irq */
		irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
				      &q_vector->affinity_mask);
	}

3041
	vsi->irqs_ready = true;
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Jesse Brandeburg 已提交
3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066
	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++) {
3067 3068
		wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
		wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
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Jesse Brandeburg 已提交
3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104
	}

	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) {
		for (i = vsi->base_vector;
		     i < (vsi->num_q_vectors + vsi->base_vector); i++)
			i40e_irq_dynamic_enable(vsi, i);
	} else {
		i40e_irq_dynamic_enable_icr0(pf);
	}

3105
	i40e_flush(&pf->hw);
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Jesse Brandeburg 已提交
3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132
	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;
3133
	irqreturn_t ret = IRQ_NONE;
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Jesse Brandeburg 已提交
3134 3135 3136 3137
	u32 icr0, icr0_remaining;
	u32 val, ena_mask;

	icr0 = rd32(hw, I40E_PFINT_ICR0);
3138
	ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
J
Jesse Brandeburg 已提交
3139

3140 3141
	/* if sharing a legacy IRQ, we might get called w/o an intr pending */
	if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3142
		goto enable_intr;
J
Jesse Brandeburg 已提交
3143

S
Shannon Nelson 已提交
3144 3145 3146 3147 3148
	/* 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++;

J
Jesse Brandeburg 已提交
3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161
	/* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
	if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {

		/* temporarily disable queue cause for NAPI processing */
		u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
		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))
3162
			napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
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Jesse Brandeburg 已提交
3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186
	}

	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;
3187
		if (val == I40E_RESET_CORER) {
J
Jesse Brandeburg 已提交
3188
			pf->corer_count++;
3189
		} else if (val == I40E_RESET_GLOBR) {
J
Jesse Brandeburg 已提交
3190
			pf->globr_count++;
3191
		} else if (val == I40E_RESET_EMPR) {
J
Jesse Brandeburg 已提交
3192
			pf->empr_count++;
3193
			set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3194
		}
J
Jesse Brandeburg 已提交
3195 3196
	}

3197 3198 3199
	if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
		icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
		dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3200 3201 3202
		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));
3203 3204
	}

J
Jacob Keller 已提交
3205 3206 3207 3208
	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) {
3209
			icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
J
Jacob Keller 已提交
3210 3211 3212 3213
			i40e_ptp_tx_hwtstamp(pf);
		}
	}

J
Jesse Brandeburg 已提交
3214 3215 3216 3217 3218 3219 3220 3221
	/* 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);
3222
		if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
J
Jesse Brandeburg 已提交
3223
		    (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3224
		    (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3225 3226 3227
			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
3228 3229 3230
		}
		ena_mask &= ~icr0_remaining;
	}
3231
	ret = IRQ_HANDLED;
J
Jesse Brandeburg 已提交
3232

3233
enable_intr:
J
Jesse Brandeburg 已提交
3234 3235 3236 3237 3238 3239 3240
	/* 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);
	}

3241
	return ret;
J
Jesse Brandeburg 已提交
3242 3243
}

3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279
/**
 * 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;

3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290
		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);
		}
3291 3292 3293 3294 3295
		/* 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);
3296 3297
		if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
			kfree(tx_buf->raw_buf);
3298

3299 3300 3301
		tx_buf->raw_buf = NULL;
		tx_buf->tx_flags = 0;
		tx_buf->next_to_watch = NULL;
3302
		dma_unmap_len_set(tx_buf, len, 0);
3303 3304
		tx_desc->buffer_addr = 0;
		tx_desc->cmd_type_offset_bsz = 0;
3305

3306
		/* move us past the eop_desc for start of next FD desc */
3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348
		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;

	if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
		i40e_irq_dynamic_enable(vsi,
				tx_ring->q_vector->v_idx + vsi->base_vector);
	}
	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
3349
/**
3350
 * i40e_map_vector_to_qp - Assigns the queue pair to the vector
J
Jesse Brandeburg 已提交
3351 3352
 * @vsi: the VSI being configured
 * @v_idx: vector index
3353
 * @qp_idx: queue pair index
J
Jesse Brandeburg 已提交
3354
 **/
3355
static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
J
Jesse Brandeburg 已提交
3356
{
3357
	struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3358 3359
	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
3360 3361

	tx_ring->q_vector = q_vector;
3362 3363
	tx_ring->next = q_vector->tx.ring;
	q_vector->tx.ring = tx_ring;
J
Jesse Brandeburg 已提交
3364
	q_vector->tx.count++;
3365 3366 3367 3368 3369

	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
3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384
}

/**
 * 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;
3385
	int num_ringpairs;
J
Jesse Brandeburg 已提交
3386 3387 3388 3389 3390
	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.
3391 3392 3393 3394
	 * 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
3395
	 */
3396
	for (; v_start < q_vectors; v_start++) {
3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411
		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--) {
			map_vector_to_qp(vsi, v_start, qp_idx);
			qp_idx++;
			qp_remaining--;
J
Jesse Brandeburg 已提交
3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429
		}
	}
}

/**
 * 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,
3430
				  pf->int_name, pf);
J
Jesse Brandeburg 已提交
3431 3432
	else
		err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3433
				  pf->int_name, pf);
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3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448

	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.
 **/
3449 3450 3451
#ifdef I40E_FCOE
void i40e_netpoll(struct net_device *netdev)
#else
J
Jesse Brandeburg 已提交
3452
static void i40e_netpoll(struct net_device *netdev)
3453
#endif
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3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466
{
	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;

	pf->flags |= I40E_FLAG_IN_NETPOLL;
	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		for (i = 0; i < vsi->num_q_vectors; i++)
3467
			i40e_msix_clean_rings(0, vsi->q_vectors[i]);
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3468 3469 3470 3471 3472 3473 3474
	} else {
		i40e_intr(pf->pdev->irq, netdev);
	}
	pf->flags &= ~I40E_FLAG_IN_NETPOLL;
}
#endif

3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495
/**
 * 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;

3496
		usleep_range(10, 20);
3497 3498 3499 3500 3501 3502 3503
	}
	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
		return -ETIMEDOUT;

	return 0;
}

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3504 3505 3506 3507 3508 3509 3510 3511 3512
/**
 * 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;
3513
	int i, j, pf_q, ret = 0;
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3514 3515 3516 3517
	u32 tx_reg;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3518 3519 3520 3521

		/* warn the TX unit of coming changes */
		i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
		if (!enable)
3522
			usleep_range(10, 20);
3523

3524
		for (j = 0; j < 50; j++) {
J
Jesse Brandeburg 已提交
3525
			tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3526 3527 3528 3529 3530
			if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
			    ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
				break;
			usleep_range(1000, 2000);
		}
3531
		/* Skip if the queue is already in the requested state */
3532
		if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3533
			continue;
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Jesse Brandeburg 已提交
3534 3535

		/* turn on/off the queue */
3536 3537
		if (enable) {
			wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3538
			tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3539
		} else {
J
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3540
			tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3541
		}
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3542 3543

		wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3544 3545 3546
		/* No waiting for the Tx queue to disable */
		if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
			continue;
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3547 3548

		/* wait for the change to finish */
3549 3550 3551 3552 3553 3554 3555
		ret = i40e_pf_txq_wait(pf, pf_q, enable);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "%s: VSI seid %d Tx ring %d %sable timeout\n",
				 __func__, vsi->seid, pf_q,
				 (enable ? "en" : "dis"));
			break;
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3556 3557 3558
		}
	}

3559 3560
	if (hw->revision_id == 0)
		mdelay(50);
3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584
	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;

3585
		usleep_range(10, 20);
3586 3587 3588
	}
	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
		return -ETIMEDOUT;
3589

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3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601
	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;
3602
	int i, j, pf_q, ret = 0;
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3603 3604 3605 3606
	u32 rx_reg;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3607
		for (j = 0; j < 50; j++) {
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3608
			rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3609 3610 3611 3612 3613
			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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3614

3615 3616 3617
		/* 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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3618 3619 3620

		/* turn on/off the queue */
		if (enable)
3621
			rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
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3622
		else
3623
			rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
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3624 3625 3626
		wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);

		/* wait for the change to finish */
3627 3628 3629 3630 3631 3632 3633
		ret = i40e_pf_rxq_wait(pf, pf_q, enable);
		if (ret) {
			dev_info(&pf->pdev->dev,
				 "%s: VSI seid %d Rx ring %d %sable timeout\n",
				 __func__, vsi->seid, pf_q,
				 (enable ? "en" : "dis"));
			break;
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3634 3635 3636
		}
	}

3637
	return ret;
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3638 3639 3640 3641 3642 3643 3644
}

/**
 * i40e_vsi_control_rings - Start or stop a VSI's rings
 * @vsi: the VSI being configured
 * @enable: start or stop the rings
 **/
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3645
int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
J
Jesse Brandeburg 已提交
3646
{
3647
	int ret = 0;
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3648 3649 3650 3651 3652 3653 3654 3655

	/* 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 {
3656 3657 3658
		/* 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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3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679
	}

	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;

3680 3681 3682 3683
		if (!vsi->irqs_ready)
			return;

		vsi->irqs_ready = false;
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3684 3685 3686 3687
		for (i = 0; i < vsi->num_q_vectors; i++) {
			u16 vector = i + base;

			/* free only the irqs that were actually requested */
S
Shannon Nelson 已提交
3688 3689
			if (!vsi->q_vectors[i] ||
			    !vsi->q_vectors[i]->num_ringpairs)
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3690 3691 3692 3693 3694 3695
				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,
3696
				 vsi->q_vectors[i]);
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3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778

			/* 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);
	}
}

3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790
/**
 * 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];
3791
	struct i40e_ring *ring;
3792 3793 3794 3795 3796

	if (!q_vector)
		return;

	/* disassociate q_vector from rings */
3797 3798 3799 3800 3801
	i40e_for_each_ring(ring, q_vector->tx)
		ring->q_vector = NULL;

	i40e_for_each_ring(ring, q_vector->rx)
		ring->q_vector = NULL;
3802 3803 3804 3805 3806 3807 3808 3809 3810 3811

	/* 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
3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822
/**
 * 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;

3823 3824
	for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
		i40e_free_q_vector(vsi, v_idx);
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Jesse Brandeburg 已提交
3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837
}

/**
 * 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;
3838 3839
		kfree(pf->irq_pile);
		pf->irq_pile = NULL;
J
Jesse Brandeburg 已提交
3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856
	} 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;

3857 3858 3859 3860 3861 3862
	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
3863
	i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
M
Mitch Williams 已提交
3864
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881
		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++)
3882
		napi_enable(&vsi->q_vectors[q_idx]->napi);
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Jesse Brandeburg 已提交
3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896
}

/**
 * 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++)
3897
		napi_disable(&vsi->q_vectors[q_idx]->napi);
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Jesse Brandeburg 已提交
3898 3899
}

3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912
/**
 * 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);
}

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Jesse Brandeburg 已提交
3913 3914 3915 3916 3917 3918 3919 3920 3921
/**
 * 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;

3922 3923 3924 3925 3926 3927 3928 3929 3930
	/* 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: VSI seid %d skipping FCoE VSI disable\n",
			 __func__, vsi->seid);
		return;
	}

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Jesse Brandeburg 已提交
3931 3932 3933 3934
	set_bit(__I40E_NEEDS_RESTART, &vsi->state);
	if (vsi->netdev && netif_running(vsi->netdev)) {
		vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
	} else {
3935
		i40e_vsi_close(vsi);
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Jesse Brandeburg 已提交
3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951
	}
}

/**
 * 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
3952
		i40e_vsi_open(vsi);   /* this clears the DOWN bit */
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}

/**
 * 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;

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	for (v = 0; v < pf->num_alloc_vsi; v++) {
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		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;

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	for (v = 0; v < pf->num_alloc_vsi; v++) {
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		if (pf->vsi[v])
			i40e_unquiesce_vsi(pf->vsi[v]);
	}
}

3983 3984 3985 3986 3987 3988 3989 3990 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
#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: VSI seid %d Tx ring %d disable timeout\n",
				 __func__, vsi->seid, pf_q);
			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++) {
4022 4023
		/* No need to wait for FCoE VSI queues */
		if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4024 4025 4026 4027 4028 4029 4030 4031 4032 4033
			ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
			if (ret)
				break;
		}
	}

	return ret;
}

#endif
4034 4035
/**
 * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4036
 * @pf: pointer to PF
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
 *
 * 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];
			enabled_tc |= (1 << tc);
			break;
		}
	}

	return enabled_tc;
}

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/**
 * 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)
{
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	u8 num_tc = 0;
	int i;
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	/* 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
	 */
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	return num_tc + 1;
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}

/**
 * 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++)
		enabled_tc |= 1 << i;

	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;

4126 4127 4128 4129
	/* SFP mode will be enabled for all TCs on port */
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		return i40e_dcb_get_num_tc(dcbcfg);

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	/* MFP mode return count of enabled TCs for this PF */
4131 4132 4133
	if (pf->hw.func_caps.iscsi)
		enabled_tc =  i40e_get_iscsi_tc_map(pf);
	else
4134
		return 1; /* Only TC0 */
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4136 4137 4138 4139 4140 4141 4142
	/* At least have TC0 */
	enabled_tc = (enabled_tc ? enabled_tc : 0x1);
	for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
		if (enabled_tc & (1 << i))
			num_tc++;
	}
	return num_tc;
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}

/**
 * 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++) {
		if (enabled_tc & (1 << i))
			break;
	}

	return 1 << i;
}

/**
 * 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 */
4181 4182 4183
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);

4184
	/* MFP enabled and iSCSI PF type */
4185 4186 4187
	if (pf->hw.func_caps.iscsi)
		return i40e_get_iscsi_tc_map(pf);
	else
4188
		return i40e_pf_get_default_tc(pf);
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}

/**
 * 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;
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	i40e_status aq_ret;
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4204 4205 4206 4207
	u32 tc_bw_max;
	int i;

	/* Get the VSI level BW configuration */
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	aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
	if (aq_ret) {
J
Jesse Brandeburg 已提交
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		dev_info(&pf->pdev->dev,
4211
			 "couldn't get PF vsi bw config, err %d, aq_err %d\n",
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4212 4213
			 aq_ret, pf->hw.aq.asq_last_status);
		return -EINVAL;
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4214 4215 4216
	}

	/* Get the VSI level BW configuration per TC */
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4217
	aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
J
Jesse Brandeburg 已提交
4218
						  NULL);
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4219
	if (aq_ret) {
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4220
		dev_info(&pf->pdev->dev,
4221
			 "couldn't get PF vsi ets bw config, err %d, aq_err %d\n",
J
Jesse Brandeburg 已提交
4222 4223
			 aq_ret, pf->hw.aq.asq_last_status);
		return -EINVAL;
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	}

	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);
	}
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4245

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4246
	return 0;
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4247 4248 4249 4250 4251 4252 4253 4254 4255 4256
}

/**
 * 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
 **/
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static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
J
Jesse Brandeburg 已提交
4258 4259 4260
				       u8 *bw_share)
{
	struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
J
Jesse Brandeburg 已提交
4261 4262
	i40e_status aq_ret;
	int i;
J
Jesse Brandeburg 已提交
4263 4264 4265 4266 4267

	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];

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Jesse Brandeburg 已提交
4268 4269 4270
	aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
					  NULL);
	if (aq_ret) {
J
Jesse Brandeburg 已提交
4271
		dev_info(&vsi->back->pdev->dev,
J
Jesse Brandeburg 已提交
4272 4273
			 "AQ command Config VSI BW allocation per TC failed = %d\n",
			 vsi->back->hw.aq.asq_last_status);
J
Jesse Brandeburg 已提交
4274
		return -EINVAL;
J
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4275 4276 4277 4278 4279
	}

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

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Jesse Brandeburg 已提交
4280
	return 0;
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4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 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
}

/**
 * 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.
		 */
		if (vsi->tc_config.enabled_tc & (1 << i))
			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++) {
		if (enabled_tc & (1 << i))
			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;
	memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
	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,
			 "update vsi failed, aq_err=%d\n",
			 vsi->back->hw.aq.asq_last_status);
		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,
			 "Failed updating vsi bw info, aq_err=%d\n",
			 vsi->back->hw.aq.asq_last_status);
		goto out;
	}

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

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Neerav Parikh 已提交
4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505
/**
 * 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++) {
		if (enabled_tc & (1 << i))
			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,
			 "veb bw config failed, aq_err=%d\n",
			 pf->hw.aq.asq_last_status);
		goto out;
	}

	/* Update the BW information */
	ret = i40e_veb_get_bw_info(veb);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "Failed getting veb bw config, aq_err=%d\n",
			 pf->hw.aq.asq_last_status);
	}

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
4506
	for (v = 0; v < pf->num_alloc_vsi; v++) {
N
Neerav Parikh 已提交
4507 4508 4509 4510
		if (!pf->vsi[v])
			continue;

		/* - Enable all TCs for the LAN VSI
4511 4512 4513 4514
#ifdef I40E_FCOE
		 * - For FCoE VSI only enable the TC configured
		 *   as per the APP TLV
#endif
N
Neerav Parikh 已提交
4515 4516 4517 4518 4519 4520
		 * - 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);
4521 4522 4523 4524
#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
4525 4526 4527 4528 4529 4530 4531 4532

		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 {
4533 4534
			/* Re-configure VSI vectors based on updated TC map */
			i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
N
Neerav Parikh 已提交
4535 4536 4537 4538 4539 4540
			if (pf->vsi[v]->netdev)
				i40e_dcbnl_set_all(pf->vsi[v]);
		}
	}
}

4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565
/**
 * 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,
			 "AQ command Resume Port Tx failed = %d\n",
			  pf->hw.aq.asq_last_status);
		/* 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
4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577
/**
 * 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;

4578 4579 4580 4581 4582
	/* 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
4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598
	/* 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;
4599 4600 4601 4602 4603

			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;
4604 4605
			dev_dbg(&pf->pdev->dev,
				"DCBX offload is supported for this PF.\n");
N
Neerav Parikh 已提交
4606
		}
4607
	} else {
4608 4609
		dev_info(&pf->pdev->dev,
			 "AQ Querying DCB configuration failed: aq_err %d\n",
4610
			 pf->hw.aq.asq_last_status);
N
Neerav Parikh 已提交
4611 4612 4613 4614 4615 4616
	}

out:
	return err;
}
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632
#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
 */
static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
{
	char speed[SPEED_SIZE] = "Unknown";
	char fc[FC_SIZE] = "RX/TX";

	if (!isup) {
		netdev_info(vsi->netdev, "NIC Link is Down\n");
		return;
	}

4633 4634 4635 4636 4637 4638 4639 4640 4641
	/* 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
4642 4643
	switch (vsi->back->hw.phy.link_info.link_speed) {
	case I40E_LINK_SPEED_40GB:
4644
		strlcpy(speed, "40 Gbps", SPEED_SIZE);
J
Jesse Brandeburg 已提交
4645
		break;
4646 4647 4648
	case I40E_LINK_SPEED_20GB:
		strncpy(speed, "20 Gbps", SPEED_SIZE);
		break;
J
Jesse Brandeburg 已提交
4649
	case I40E_LINK_SPEED_10GB:
4650
		strlcpy(speed, "10 Gbps", SPEED_SIZE);
J
Jesse Brandeburg 已提交
4651 4652
		break;
	case I40E_LINK_SPEED_1GB:
4653
		strlcpy(speed, "1000 Mbps", SPEED_SIZE);
J
Jesse Brandeburg 已提交
4654
		break;
M
Mitch Williams 已提交
4655 4656 4657
	case I40E_LINK_SPEED_100MB:
		strncpy(speed, "100 Mbps", SPEED_SIZE);
		break;
J
Jesse Brandeburg 已提交
4658 4659 4660 4661 4662 4663
	default:
		break;
	}

	switch (vsi->back->hw.fc.current_mode) {
	case I40E_FC_FULL:
4664
		strlcpy(fc, "RX/TX", FC_SIZE);
J
Jesse Brandeburg 已提交
4665 4666
		break;
	case I40E_FC_TX_PAUSE:
4667
		strlcpy(fc, "TX", FC_SIZE);
J
Jesse Brandeburg 已提交
4668 4669
		break;
	case I40E_FC_RX_PAUSE:
4670
		strlcpy(fc, "RX", FC_SIZE);
J
Jesse Brandeburg 已提交
4671 4672
		break;
	default:
4673
		strlcpy(fc, "None", FC_SIZE);
J
Jesse Brandeburg 已提交
4674 4675 4676 4677 4678 4679
		break;
	}

	netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
		    speed, fc);
}
N
Neerav Parikh 已提交
4680

J
Jesse Brandeburg 已提交
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
/**
 * 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
4706
		i40e_print_link_message(vsi, true);
J
Jesse Brandeburg 已提交
4707 4708
		netif_tx_start_all_queues(vsi->netdev);
		netif_carrier_on(vsi->netdev);
A
Anjali Singhai 已提交
4709
	} else if (vsi->netdev) {
J
Jesse Brandeburg 已提交
4710
		i40e_print_link_message(vsi, false);
4711 4712 4713 4714 4715 4716 4717
		/* 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
4718
	}
4719 4720

	/* replay FDIR SB filters */
4721 4722 4723 4724 4725 4726 4727 4728
	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;
			dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
			pf->fd_tcp_rule = 0;
		}
4729
		i40e_fdir_filter_restore(vsi);
4730
	}
J
Jesse Brandeburg 已提交
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 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796
	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++) {
4797 4798
		i40e_clean_tx_ring(vsi->tx_rings[i]);
		i40e_clean_rx_ring(vsi->rx_rings[i]);
J
Jesse Brandeburg 已提交
4799 4800 4801 4802 4803 4804 4805 4806
	}
}

/**
 * i40e_setup_tc - configure multiple traffic classes
 * @netdev: net device to configure
 * @tc: number of traffic classes to enable
 **/
4807 4808 4809
#ifdef I40E_FCOE
int i40e_setup_tc(struct net_device *netdev, u8 tc)
#else
J
Jesse Brandeburg 已提交
4810
static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4811
#endif
J
Jesse Brandeburg 已提交
4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875
{
	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++)
		enabled_tc |= (1 << i);

	/* 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
 **/
4876
int i40e_open(struct net_device *netdev)
J
Jesse Brandeburg 已提交
4877 4878 4879 4880 4881 4882
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int err;

4883 4884 4885
	/* 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
4886 4887 4888 4889
		return -EBUSY;

	netif_carrier_off(netdev);

4890 4891 4892 4893
	err = i40e_vsi_open(vsi);
	if (err)
		return err;

4894 4895 4896 4897 4898 4899 4900 4901
	/* 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);

4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919
#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;
4920
	char int_name[I40E_INT_NAME_STR_LEN];
4921 4922
	int err;

J
Jesse Brandeburg 已提交
4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934
	/* 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;

4935 4936 4937 4938 4939 4940
	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
4941

4942 4943 4944 4945 4946
		/* 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;
4947

4948 4949 4950 4951
		err = netif_set_real_num_rx_queues(vsi->netdev,
						   vsi->num_queue_pairs);
		if (err)
			goto err_set_queues;
4952 4953

	} else if (vsi->type == I40E_VSI_FDIR) {
4954
		snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4955 4956
			 dev_driver_string(&pf->pdev->dev),
			 dev_name(&pf->pdev->dev));
4957
		err = i40e_vsi_request_irq(vsi, int_name);
4958

4959
	} else {
4960
		err = -EINVAL;
4961 4962
		goto err_setup_rx;
	}
4963

J
Jesse Brandeburg 已提交
4964 4965 4966 4967 4968 4969 4970 4971
	err = i40e_up_complete(vsi);
	if (err)
		goto err_up_complete;

	return 0;

err_up_complete:
	i40e_down(vsi);
4972
err_set_queues:
J
Jesse Brandeburg 已提交
4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983
	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])
		i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));

	return err;
}

4984 4985
/**
 * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4986
 * @pf: Pointer to PF
4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003
 *
 * 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
5004 5005 5006 5007 5008 5009 5010 5011 5012 5013
/**
 * 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
 **/
5014 5015 5016
#ifdef I40E_FCOE
int i40e_close(struct net_device *netdev)
#else
J
Jesse Brandeburg 已提交
5017
static int i40e_close(struct net_device *netdev)
5018
#endif
J
Jesse Brandeburg 已提交
5019 5020 5021 5022
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

5023
	i40e_vsi_close(vsi);
J
Jesse Brandeburg 已提交
5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042

	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());

5043 5044 5045
	if (i40e_check_asq_alive(&pf->hw))
		i40e_vc_notify_reset(pf);

J
Jesse Brandeburg 已提交
5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056
	/* do the biggest reset indicated */
	if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {

		/* 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
5057
		dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
J
Jesse Brandeburg 已提交
5058 5059 5060 5061 5062 5063 5064 5065 5066 5067
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);

	} else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {

		/* Request a Core Reset
		 *
		 * Same as Global Reset, except does *not* include the MAC/PHY
		 */
J
Jesse Brandeburg 已提交
5068
		dev_dbg(&pf->pdev->dev, "CoreR requested\n");
J
Jesse Brandeburg 已提交
5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_CORER_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
		i40e_flush(&pf->hw);

	} else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {

		/* 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
5084
		dev_dbg(&pf->pdev->dev, "PFR requested\n");
J
Jesse Brandeburg 已提交
5085 5086 5087 5088 5089 5090 5091 5092
		i40e_handle_reset_warning(pf);

	} else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
		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
5093
		for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
5094 5095 5096 5097 5098 5099 5100 5101
			struct i40e_vsi *vsi = pf->vsi[v];
			if (vsi != NULL &&
			    test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
				i40e_vsi_reinit_locked(pf->vsi[v]);
				clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
			}
		}

5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118
		/* no further action needed, so return now */
		return;
	} else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
		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];
			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
5119 5120 5121 5122 5123 5124 5125 5126 5127
		/* no further action needed, so return now */
		return;
	} else {
		dev_info(&pf->pdev->dev,
			 "bad reset request 0x%08x\n", reset_flags);
		return;
	}
}

N
Neerav Parikh 已提交
5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149
#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
5150
			dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
N
Neerav Parikh 已提交
5151 5152 5153 5154 5155
		}

		if (memcmp(&new_cfg->etscfg.tcbwtable,
			   &old_cfg->etscfg.tcbwtable,
			   sizeof(new_cfg->etscfg.tcbwtable)))
J
Jesse Brandeburg 已提交
5156
			dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
N
Neerav Parikh 已提交
5157 5158 5159 5160

		if (memcmp(&new_cfg->etscfg.tsatable,
			   &old_cfg->etscfg.tsatable,
			   sizeof(new_cfg->etscfg.tsatable)))
J
Jesse Brandeburg 已提交
5161
			dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
N
Neerav Parikh 已提交
5162 5163 5164 5165 5166 5167 5168
	}

	/* 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
5169
		dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
N
Neerav Parikh 已提交
5170 5171 5172 5173 5174
	}

	/* Check if APP Table has changed */
	if (memcmp(&new_cfg->app,
		   &old_cfg->app,
5175
		   sizeof(new_cfg->app))) {
N
Neerav Parikh 已提交
5176
		need_reconfig = true;
J
Jesse Brandeburg 已提交
5177
		dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5178
	}
N
Neerav Parikh 已提交
5179

5180 5181
	dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
		need_reconfig);
N
Neerav Parikh 已提交
5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200
	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;

5201 5202 5203 5204
	/* Not DCB capable or capability disabled */
	if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
		return ret;

N
Neerav Parikh 已提交
5205 5206 5207
	/* Ignore if event is not for Nearest Bridge */
	type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
		& I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5208 5209
	dev_dbg(&pf->pdev->dev,
		"%s: LLDP event mib bridge type 0x%x\n", __func__, type);
N
Neerav Parikh 已提交
5210 5211 5212 5213 5214
	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;
5215 5216 5217
	dev_dbg(&pf->pdev->dev,
		"%s: LLDP event mib type %s\n", __func__,
		type ? "remote" : "local");
N
Neerav Parikh 已提交
5218 5219 5220 5221 5222 5223 5224 5225 5226
	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;
	}

	memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5227
	/* Store the old configuration */
5228
	memcpy(&tmp_dcbx_cfg, &hw->local_dcbx_config, sizeof(tmp_dcbx_cfg));
5229

5230 5231
	/* Reset the old DCBx configuration data */
	memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5232 5233
	/* Get updated DCBX data from firmware */
	ret = i40e_get_dcb_config(&pf->hw);
N
Neerav Parikh 已提交
5234
	if (ret) {
5235
		dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
N
Neerav Parikh 已提交
5236 5237 5238 5239
		goto exit;
	}

	/* No change detected in DCBX configs */
5240 5241
	if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
		    sizeof(tmp_dcbx_cfg))) {
J
Jesse Brandeburg 已提交
5242
		dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
N
Neerav Parikh 已提交
5243 5244 5245
		goto exit;
	}

5246 5247
	need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
					       &hw->local_dcbx_config);
N
Neerav Parikh 已提交
5248

5249
	i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
N
Neerav Parikh 已提交
5250 5251 5252 5253

	if (!need_reconfig)
		goto exit;

5254
	/* Enable DCB tagging only when more than one TC */
5255
	if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5256 5257 5258 5259
		pf->flags |= I40E_FLAG_DCB_ENABLED;
	else
		pf->flags &= ~I40E_FLAG_DCB_ENABLED;

5260
	set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
N
Neerav Parikh 已提交
5261 5262 5263 5264 5265 5266
	/* Reconfiguration needed quiesce all VSIs */
	i40e_pf_quiesce_all_vsi(pf);

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

5267 5268
	ret = i40e_resume_port_tx(pf);

5269
	clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5270
	/* In case of error no point in resuming VSIs */
5271 5272 5273 5274 5275
	if (ret)
		goto exit;

	/* Wait for the PF's Tx queues to be disabled */
	ret = i40e_pf_wait_txq_disabled(pf);
5276 5277 5278 5279 5280
	if (ret) {
		/* Schedule PF reset to recover */
		set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
		i40e_service_event_schedule(pf);
	} else {
5281
		i40e_pf_unquiesce_all_vsi(pf);
5282 5283
	}

N
Neerav Parikh 已提交
5284 5285 5286 5287 5288
exit:
	return ret;
}
#endif /* CONFIG_I40E_DCB */

5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301
/**
 * 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
5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320
/**
 * 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
5321 5322
	dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
		queue, qtx_ctl);
J
Jesse Brandeburg 已提交
5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346

	/* 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)
{
	BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));

	/* flush memory to make sure state is correct before next watchog */
5347
	smp_mb__before_atomic();
J
Jesse Brandeburg 已提交
5348 5349 5350
	clear_bit(__I40E_SERVICE_SCHED, &pf->state);
}

5351
/**
5352 5353 5354
 * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
 * @pf: board private structure
 **/
5355
u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5356
{
5357
	u32 val, fcnt_prog;
5358 5359 5360 5361 5362 5363 5364

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

/**
5365
 * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5366 5367
 * @pf: board private structure
 **/
5368
u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5369
{
5370 5371
	u32 val, fcnt_prog;

5372 5373 5374 5375 5376 5377
	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;
}
5378

5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393
/**
 * 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;
}

5394 5395 5396 5397 5398 5399 5400 5401
/**
 * 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)
{
	u32 fcnt_prog, fcnt_avail;

5402 5403 5404
	if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
		return;

5405 5406 5407
	/* Check if, FD SB or ATR was auto disabled and if there is enough room
	 * to re-enable
	 */
5408
	fcnt_prog = i40e_get_global_fd_count(pf);
5409
	fcnt_avail = pf->fdir_pf_filter_count;
5410 5411 5412
	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)) {
5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428
		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;
			dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
		}
	}
	/* 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;
			dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
		}
	}
}

5429
#define I40E_MIN_FD_FLUSH_INTERVAL 10
5430
#define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5431 5432 5433 5434 5435 5436
/**
 * 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)
{
5437
	unsigned long min_flush_time;
5438
	int flush_wait_retry = 50;
5439 5440
	bool disable_atr = false;
	int fd_room;
5441 5442
	int reg;

5443 5444 5445
	if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
		return;

5446 5447
	if (time_after(jiffies, pf->fd_flush_timestamp +
				(I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460
		/* 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)) {
			dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
			disable_atr = true;
		}

5461 5462 5463 5464 5465 5466
		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);
5467
		pf->fd_flush_cnt++;
5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480
		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]);
5481 5482
			if (!disable_atr)
				pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5483 5484 5485 5486 5487 5488 5489 5490 5491 5492
			clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
			dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
		}
	}
}

/**
 * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
 * @pf: board private structure
 **/
5493
u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504
{
	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
5505 5506 5507 5508 5509 5510 5511 5512 5513 5514
/**
 * 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;
5515

5516 5517 5518
	if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
		return;

5519
	if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5520 5521
		i40e_fdir_flush_and_replay(pf);

5522 5523
	i40e_fdir_check_and_reenable(pf);

J
Jesse Brandeburg 已提交
5524 5525 5526 5527 5528 5529 5530 5531 5532
}

/**
 * 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)
{
5533
	if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
J
Jesse Brandeburg 已提交
5534 5535 5536 5537
		return;

	switch (vsi->type) {
	case I40E_VSI_MAIN:
5538 5539 5540
#ifdef I40E_FCOE
	case I40E_VSI_FCOE:
#endif
J
Jesse Brandeburg 已提交
5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582
		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
5583
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594
		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)
{
	bool new_link, old_link;
M
Mitch Williams 已提交
5595
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5596
	u8 new_link_speed, old_link_speed;
J
Jesse Brandeburg 已提交
5597

5598 5599 5600
	/* 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
5601
	old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5602
	new_link = i40e_get_link_status(&pf->hw);
5603 5604
	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
5605

5606
	if (new_link == old_link &&
5607
	    new_link_speed == old_link_speed &&
M
Mitch Williams 已提交
5608 5609
	    (test_bit(__I40E_DOWN, &vsi->state) ||
	     new_link == netif_carrier_ok(vsi->netdev)))
J
Jesse Brandeburg 已提交
5610
		return;
M
Mitch Williams 已提交
5611 5612 5613

	if (!test_bit(__I40E_DOWN, &vsi->state))
		i40e_print_link_message(vsi, new_link);
J
Jesse Brandeburg 已提交
5614 5615 5616 5617 5618 5619 5620

	/* 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
5621
		i40e_vsi_link_event(vsi, new_link);
J
Jesse Brandeburg 已提交
5622 5623 5624

	if (pf->vf)
		i40e_vc_notify_link_state(pf);
J
Jacob Keller 已提交
5625 5626 5627

	if (pf->flags & I40E_FLAG_PTP)
		i40e_ptp_set_increment(pf);
J
Jesse Brandeburg 已提交
5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641
}

/**
 * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
 * @pf: board private structure
 *
 * Set the per-queue flags to request a check for stuck queues in the irq
 * clean functions, then force interrupts to be sure the irq clean is called.
 **/
static void i40e_check_hang_subtask(struct i40e_pf *pf)
{
	int i, v;

	/* If we're down or resetting, just bail */
5642 5643
	if (test_bit(__I40E_DOWN, &pf->state) ||
	    test_bit(__I40E_CONFIG_BUSY, &pf->state))
J
Jesse Brandeburg 已提交
5644 5645 5646 5647 5648 5649 5650 5651
		return;

	/* for each VSI/netdev
	 *     for each Tx queue
	 *         set the check flag
	 *     for each q_vector
	 *         force an interrupt
	 */
M
Mitch Williams 已提交
5652
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
5653 5654 5655 5656 5657 5658 5659 5660 5661
		struct i40e_vsi *vsi = pf->vsi[v];
		int armed = 0;

		if (!pf->vsi[v] ||
		    test_bit(__I40E_DOWN, &vsi->state) ||
		    (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
			continue;

		for (i = 0; i < vsi->num_queue_pairs; i++) {
5662
			set_check_for_tx_hang(vsi->tx_rings[i]);
J
Jesse Brandeburg 已提交
5663
			if (test_bit(__I40E_HANG_CHECK_ARMED,
5664
				     &vsi->tx_rings[i]->state))
J
Jesse Brandeburg 已提交
5665 5666 5667 5668 5669 5670 5671
				armed++;
		}

		if (armed) {
			if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
				wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
				     (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5672 5673 5674 5675
				      I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
				      I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
				      I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
				      I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
J
Jesse Brandeburg 已提交
5676 5677 5678
			} else {
				u16 vec = vsi->base_vector - 1;
				u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5679 5680 5681 5682
				      I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
				      I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
				      I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
				      I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
J
Jesse Brandeburg 已提交
5683 5684 5685 5686 5687 5688 5689 5690 5691 5692
				for (i = 0; i < vsi->num_q_vectors; i++, vec++)
					wr32(&vsi->back->hw,
					     I40E_PFINT_DYN_CTLN(vec), val);
			}
			i40e_flush(&vsi->back->hw);
		}
	}
}

/**
5693
 * i40e_watchdog_subtask - periodic checks not using event driven response
J
Jesse Brandeburg 已提交
5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704
 * @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;

5705 5706 5707 5708 5709 5710 5711 5712 5713
	/* 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;

	i40e_check_hang_subtask(pf);
	i40e_link_event(pf);

J
Jesse Brandeburg 已提交
5714 5715 5716
	/* 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
5717
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
5718 5719 5720 5721 5722 5723 5724
		if (pf->vsi[i] && pf->vsi[i]->netdev)
			i40e_update_stats(pf->vsi[i]);

	/* 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
5725 5726

	i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
J
Jesse Brandeburg 已提交
5727 5728 5729 5730 5731 5732 5733 5734 5735 5736
}

/**
 * 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;

5737
	rtnl_lock();
J
Jesse Brandeburg 已提交
5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753
	if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
		reset_flags |= (1 << __I40E_REINIT_REQUESTED);
		clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
	}
	if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
		reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
		clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
	}
	if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
		reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
		clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
	}
	if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
		reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
		clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
	}
5754 5755 5756 5757
	if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
		reset_flags |= (1 << __I40E_DOWN_REQUESTED);
		clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
	}
J
Jesse Brandeburg 已提交
5758 5759 5760 5761 5762 5763

	/* 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);
5764
		goto unlock;
J
Jesse Brandeburg 已提交
5765 5766 5767 5768 5769 5770 5771
	}

	/* 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);
5772 5773 5774

unlock:
	rtnl_unlock();
J
Jesse Brandeburg 已提交
5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793
}

/**
 * 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_hw *hw = &pf->hw;
	struct i40e_aqc_get_link_status *status =
		(struct i40e_aqc_get_link_status *)&e->desc.params.raw;
	struct i40e_link_status *hw_link_info = &hw->phy.link_info;

	/* save off old link status information */
	memcpy(&pf->hw.phy.link_info_old, hw_link_info,
	       sizeof(pf->hw.phy.link_info_old));

5794 5795 5796 5797 5798 5799 5800 5801
	/* 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);

5802 5803 5804 5805 5806 5807
	/* 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
5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820
}

/**
 * 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;
5821
	u32 oldval;
J
Jesse Brandeburg 已提交
5822 5823
	u32 val;

5824 5825 5826 5827
	/* Do not run clean AQ when PF reset fails */
	if (test_bit(__I40E_RESET_FAILED, &pf->state))
		return;

5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862
	/* 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
5863 5864
	event.buf_len = I40E_MAX_AQ_BUF_SIZE;
	event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
J
Jesse Brandeburg 已提交
5865 5866 5867 5868 5869
	if (!event.msg_buf)
		return;

	do {
		ret = i40e_clean_arq_element(hw, &event, &pending);
M
Mitch Williams 已提交
5870
		if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
J
Jesse Brandeburg 已提交
5871
			break;
M
Mitch Williams 已提交
5872
		else if (ret) {
J
Jesse Brandeburg 已提交
5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888
			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
5889
					event.msg_len);
J
Jesse Brandeburg 已提交
5890 5891
			break;
		case i40e_aqc_opc_lldp_update_mib:
J
Jesse Brandeburg 已提交
5892
			dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
N
Neerav Parikh 已提交
5893 5894 5895 5896 5897
#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
5898 5899
			break;
		case i40e_aqc_opc_event_lan_overflow:
J
Jesse Brandeburg 已提交
5900
			dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
J
Jesse Brandeburg 已提交
5901 5902
			i40e_handle_lan_overflow_event(pf, &event);
			break;
5903 5904 5905
		case i40e_aqc_opc_send_msg_to_peer:
			dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
			break;
5906 5907 5908 5909
		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
5910 5911
		default:
			dev_info(&pf->pdev->dev,
5912 5913
				 "ARQ Error: Unknown event 0x%04x received\n",
				 opcode);
J
Jesse Brandeburg 已提交
5914 5915 5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927
			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);
}

5928 5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952
/**
 * 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);
	}
}

5953 5954
/**
 * i40e_enable_pf_switch_lb
5955
 * @pf: pointer to the PF structure
5956 5957 5958 5959 5960 5961 5962 5963 5964 5965 5966 5967 5968 5969 5970
 *
 * 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;
	int aq_ret;

	ctxt.seid = pf->main_vsi_seid;
	ctxt.pf_num = pf->hw.pf_id;
	ctxt.vf_num = 0;
	aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
	if (aq_ret) {
		dev_info(&pf->pdev->dev,
5971
			 "%s couldn't get PF vsi config, err %d, aq_err %d\n",
5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 5988
			 __func__, aq_ret, pf->hw.aq.asq_last_status);
		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);

	aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (aq_ret) {
		dev_info(&pf->pdev->dev,
			 "%s: update vsi switch failed, aq_err=%d\n",
			 __func__, vsi->back->hw.aq.asq_last_status);
	}
}

/**
 * i40e_disable_pf_switch_lb
5989
 * @pf: pointer to the PF structure
5990 5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002 6003 6004
 *
 * 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;
	int aq_ret;

	ctxt.seid = pf->main_vsi_seid;
	ctxt.pf_num = pf->hw.pf_id;
	ctxt.vf_num = 0;
	aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
	if (aq_ret) {
		dev_info(&pf->pdev->dev,
6005
			 "%s couldn't get PF vsi config, err %d, aq_err %d\n",
6006 6007 6008 6009 6010 6011 6012 6013 6014 6015 6016 6017 6018 6019 6020
			 __func__, aq_ret, pf->hw.aq.asq_last_status);
		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);

	aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
	if (aq_ret) {
		dev_info(&pf->pdev->dev,
			 "%s: update vsi switch failed, aq_err=%d\n",
			 __func__, vsi->back->hw.aq.asq_last_status);
	}
}

6021 6022 6023 6024 6025 6026 6027 6028 6029 6030 6031 6032 6033 6034 6035 6036 6037 6038 6039 6040
/**
 * 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;

	dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
		 veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
	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
6041 6042 6043 6044 6045 6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057
/**
 * 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
6058
	for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
J
Jesse Brandeburg 已提交
6059 6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086
		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,
			 "rebuild of owner VSI failed: %d\n", ret);
		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;

6087
	i40e_config_bridge_mode(veb);
6088

J
Jesse Brandeburg 已提交
6089
	/* create the remaining VSIs attached to this VEB */
M
Mitch Williams 已提交
6090
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136 6137 6138 6139 6140 6141 6142 6143 6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154 6155 6156 6157
		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];
			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,
				 "capability discovery failed: aq=%d\n",
				 pf->hw.aq.asq_last_status);
			return -ENODEV;
		}
	} while (err);

6158 6159 6160 6161 6162 6163
	if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
	    (pf->hw.aq.fw_maj_ver < 2)) {
		pf->hw.func_caps.num_msix_vectors++;
		pf->hw.func_caps.num_msix_vectors_vf++;
	}

J
Jesse Brandeburg 已提交
6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174
	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);

6175 6176 6177 6178 6179 6180 6181 6182 6183
#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
6184 6185 6186
	return 0;
}

6187 6188
static int i40e_vsi_clear(struct i40e_vsi *vsi);

J
Jesse Brandeburg 已提交
6189
/**
6190
 * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
J
Jesse Brandeburg 已提交
6191 6192
 * @pf: board private structure
 **/
6193
static void i40e_fdir_sb_setup(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
6194 6195
{
	struct i40e_vsi *vsi;
6196
	int i;
J
Jesse Brandeburg 已提交
6197

6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208 6209 6210 6211
	/* 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]);
	}

6212
	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
J
Jesse Brandeburg 已提交
6213 6214
		return;

6215
	/* find existing VSI and see if it needs configuring */
J
Jesse Brandeburg 已提交
6216
	vsi = NULL;
M
Mitch Williams 已提交
6217
	for (i = 0; i < pf->num_alloc_vsi; i++) {
6218
		if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
J
Jesse Brandeburg 已提交
6219
			vsi = pf->vsi[i];
6220 6221 6222 6223 6224
			break;
		}
	}

	/* create a new VSI if none exists */
J
Jesse Brandeburg 已提交
6225
	if (!vsi) {
6226 6227
		vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
				     pf->vsi[pf->lan_vsi]->seid, 0);
J
Jesse Brandeburg 已提交
6228 6229
		if (!vsi) {
			dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6230 6231
			pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
			return;
J
Jesse Brandeburg 已提交
6232
		}
6233
	}
J
Jesse Brandeburg 已提交
6234

6235
	i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
J
Jesse Brandeburg 已提交
6236 6237 6238 6239 6240 6241 6242 6243 6244 6245
}

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

6246
	i40e_fdir_filter_exit(pf);
M
Mitch Williams 已提交
6247
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
6248 6249 6250 6251 6252 6253 6254 6255
		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
6256
 * i40e_prep_for_reset - prep for the core to reset
J
Jesse Brandeburg 已提交
6257 6258
 * @pf: board private structure
 *
6259
 * Close up the VFs and other things in prep for PF Reset.
A
Anjali Singhai Jain 已提交
6260
  **/
S
Shannon Nelson 已提交
6261
static void i40e_prep_for_reset(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
6262 6263
{
	struct i40e_hw *hw = &pf->hw;
6264
	i40e_status ret = 0;
J
Jesse Brandeburg 已提交
6265 6266 6267 6268
	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
6269
		return;
J
Jesse Brandeburg 已提交
6270

J
Jesse Brandeburg 已提交
6271
	dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
J
Jesse Brandeburg 已提交
6272 6273 6274 6275

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

M
Mitch Williams 已提交
6276
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
6277 6278 6279 6280 6281 6282
		if (pf->vsi[v])
			pf->vsi[v]->seid = 0;
	}

	i40e_shutdown_adminq(&pf->hw);

A
Anjali Singhai Jain 已提交
6283
	/* call shutdown HMC */
6284 6285
	if (hw->hmc.hmc_obj) {
		ret = i40e_shutdown_lan_hmc(hw);
S
Shannon Nelson 已提交
6286
		if (ret)
6287 6288
			dev_warn(&pf->pdev->dev,
				 "shutdown_lan_hmc failed: %d\n", ret);
A
Anjali Singhai Jain 已提交
6289 6290 6291
	}
}

J
Jesse Brandeburg 已提交
6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303
/**
 * 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;
6304
	strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
J
Jesse Brandeburg 已提交
6305 6306 6307
	i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
}

A
Anjali Singhai Jain 已提交
6308
/**
J
Jesse Brandeburg 已提交
6309
 * i40e_reset_and_rebuild - reset and rebuild using a saved config
A
Anjali Singhai Jain 已提交
6310
 * @pf: board private structure
6311
 * @reinit: if the Main VSI needs to re-initialized.
A
Anjali Singhai Jain 已提交
6312
 **/
6313
static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
A
Anjali Singhai Jain 已提交
6314 6315
{
	struct i40e_hw *hw = &pf->hw;
6316
	u8 set_fc_aq_fail = 0;
A
Anjali Singhai Jain 已提交
6317 6318 6319
	i40e_status ret;
	u32 v;

J
Jesse Brandeburg 已提交
6320 6321 6322 6323 6324
	/* 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);
6325
	if (ret) {
J
Jesse Brandeburg 已提交
6326
		dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6327 6328
		set_bit(__I40E_RESET_FAILED, &pf->state);
		goto clear_recovery;
6329
	}
J
Jesse Brandeburg 已提交
6330 6331 6332
	pf->pfr_count++;

	if (test_bit(__I40E_DOWN, &pf->state))
6333
		goto clear_recovery;
J
Jesse Brandeburg 已提交
6334
	dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
J
Jesse Brandeburg 已提交
6335 6336 6337 6338 6339

	/* rebuild the basics for the AdminQ, HMC, and initial HW switch */
	ret = i40e_init_adminq(&pf->hw);
	if (ret) {
		dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6340
		goto clear_recovery;
J
Jesse Brandeburg 已提交
6341 6342
	}

6343
	/* re-verify the eeprom if we just had an EMP reset */
6344
	if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6345 6346
		i40e_verify_eeprom(pf);

6347
	i40e_clear_pxe_mode(hw);
J
Jesse Brandeburg 已提交
6348 6349 6350 6351 6352 6353 6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 6364 6365 6366 6367
	ret = i40e_get_capabilities(pf);
	if (ret) {
		dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
			 ret);
		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
6368 6369 6370
#ifdef CONFIG_I40E_DCB
	ret = i40e_init_pf_dcb(pf);
	if (ret) {
6371 6372 6373
		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
6374 6375
	}
#endif /* CONFIG_I40E_DCB */
6376 6377 6378 6379
#ifdef I40E_FCOE
	ret = i40e_init_pf_fcoe(pf);
	if (ret)
		dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
N
Neerav Parikh 已提交
6380

6381
#endif
J
Jesse Brandeburg 已提交
6382
	/* do basic switch setup */
6383
	ret = i40e_setup_pf_switch(pf, reinit);
J
Jesse Brandeburg 已提交
6384 6385 6386
	if (ret)
		goto end_core_reset;

J
Jesse Brandeburg 已提交
6387 6388 6389 6390 6391 6392 6393 6394 6395
	/* 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)
		dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);

6396 6397 6398 6399 6400
	/* make sure our flow control settings are restored */
	ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
	if (ret)
		dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);

J
Jesse Brandeburg 已提交
6401 6402 6403 6404 6405 6406 6407 6408
	/* 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
6409
		dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
J
Jesse Brandeburg 已提交
6410 6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444
		/* 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
6445
		dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
J
Jesse Brandeburg 已提交
6446 6447 6448 6449 6450 6451 6452 6453 6454
		/* 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;
		}
	}

6455 6456 6457 6458 6459 6460 6461
	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)
			dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
				 pf->hw.aq.asq_last_status);
6462
	}
J
Jesse Brandeburg 已提交
6463 6464 6465 6466 6467 6468 6469
	/* reinit the misc interrupt */
	if (pf->flags & I40E_FLAG_MSIX_ENABLED)
		ret = i40e_setup_misc_vector(pf);

	/* restart the VSIs that were rebuilt and running before the reset */
	i40e_pf_unquiesce_all_vsi(pf);

M
Mitch Williams 已提交
6470 6471 6472 6473 6474
	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
6475
	/* tell the firmware that we're starting */
J
Jesse Brandeburg 已提交
6476
	i40e_send_version(pf);
J
Jesse Brandeburg 已提交
6477 6478

end_core_reset:
6479 6480
	clear_bit(__I40E_RESET_FAILED, &pf->state);
clear_recovery:
J
Jesse Brandeburg 已提交
6481 6482 6483
	clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
}

A
Anjali Singhai Jain 已提交
6484
/**
6485
 * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
A
Anjali Singhai Jain 已提交
6486 6487 6488 6489 6490 6491 6492
 * @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
6493 6494
	i40e_prep_for_reset(pf);
	i40e_reset_and_rebuild(pf, false);
A
Anjali Singhai Jain 已提交
6495 6496
}

J
Jesse Brandeburg 已提交
6497 6498
/**
 * i40e_handle_mdd_event
6499
 * @pf: pointer to the PF structure
J
Jesse Brandeburg 已提交
6500 6501 6502 6503 6504 6505 6506
 *
 * 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;
6507
	bool pf_mdd_detected = false;
J
Jesse Brandeburg 已提交
6508 6509 6510 6511 6512 6513 6514 6515 6516 6517
	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) {
6518 6519
		u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
				I40E_GL_MDET_TX_PF_NUM_SHIFT;
6520
		u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6521
				I40E_GL_MDET_TX_VF_NUM_SHIFT;
6522
		u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6523
				I40E_GL_MDET_TX_EVENT_SHIFT;
6524 6525 6526
		u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
				I40E_GL_MDET_TX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
6527
		if (netif_msg_tx_err(pf))
6528
			dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6529
				 event, queue, pf_num, vf_num);
J
Jesse Brandeburg 已提交
6530 6531 6532 6533 6534
		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) {
6535 6536
		u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
				I40E_GL_MDET_RX_FUNCTION_SHIFT;
6537
		u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6538
				I40E_GL_MDET_RX_EVENT_SHIFT;
6539 6540 6541
		u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
				I40E_GL_MDET_RX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
6542 6543 6544
		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
6545 6546 6547 6548
		wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
		mdd_detected = true;
	}

6549 6550 6551 6552
	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);
6553
			dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6554 6555 6556 6557 6558
			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);
6559
			dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6560 6561 6562 6563 6564 6565 6566 6567 6568
			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
6569 6570 6571 6572 6573 6574 6575
	/* 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++;
6576 6577
			dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
				 i);
J
Jesse Brandeburg 已提交
6578 6579 6580 6581 6582 6583
		}

		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++;
6584 6585
			dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
				 i);
J
Jesse Brandeburg 已提交
6586 6587 6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604
		}

		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);
}

6605 6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617 6618 6619 6620 6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631 6632 6633 6634 6635 6636 6637 6638 6639 6640 6641 6642 6643 6644 6645 6646 6647 6648
#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;
	u8 filter_index;
	__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++) {
		if (pf->pending_vxlan_bitmap & (1 << i)) {
			pf->pending_vxlan_bitmap &= ~(1 << i);
			port = pf->vxlan_ports[i];
			ret = port ?
			      i40e_aq_add_udp_tunnel(hw, ntohs(port),
						     I40E_AQC_TUNNEL_TYPE_VXLAN,
						     &filter_index, NULL)
			      : i40e_aq_del_udp_tunnel(hw, i, NULL);

			if (ret) {
				dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
					 port ? "adding" : "deleting",
					 ntohs(port), port ? i : i);

				pf->vxlan_ports[i] = 0;
			} else {
				dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
					 port ? "Added" : "Deleted",
					 ntohs(port), port ? i : filter_index);
			}
		}
	}
}

#endif
J
Jesse Brandeburg 已提交
6649 6650 6651 6652 6653 6654 6655 6656 6657 6658 6659
/**
 * 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;

6660 6661 6662 6663 6664 6665
	/* 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;
	}

J
Jesse Brandeburg 已提交
6666 6667 6668 6669 6670 6671
	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);
6672 6673 6674
#ifdef CONFIG_I40E_VXLAN
	i40e_sync_vxlan_filters_subtask(pf);
#endif
J
Jesse Brandeburg 已提交
6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687 6688 6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717 6718 6719 6720 6721 6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742
	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;

6743 6744 6745 6746 6747 6748 6749 6750 6751
#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
6752 6753 6754 6755 6756 6757 6758 6759
	default:
		WARN_ON(1);
		return -ENODATA;
	}

	return 0;
}

A
Anjali Singhai Jain 已提交
6760 6761 6762
/**
 * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
 * @type: VSI pointer
6763
 * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
A
Anjali Singhai Jain 已提交
6764 6765 6766 6767
 *
 * On error: returns error code (negative)
 * On success: returns 0
 **/
6768
static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
A
Anjali Singhai Jain 已提交
6769 6770 6771 6772
{
	int size;
	int ret = 0;

6773
	/* allocate memory for both Tx and Rx ring pointers */
A
Anjali Singhai Jain 已提交
6774 6775 6776 6777 6778 6779
	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];

6780 6781
	if (alloc_qvectors) {
		/* allocate memory for q_vector pointers */
6782
		size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6783 6784 6785 6786 6787
		vsi->q_vectors = kzalloc(size, GFP_KERNEL);
		if (!vsi->q_vectors) {
			ret = -ENOMEM;
			goto err_vectors;
		}
A
Anjali Singhai Jain 已提交
6788 6789 6790 6791 6792 6793 6794 6795
	}
	return ret;

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

J
Jesse Brandeburg 已提交
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
/**
 * 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
6821
	while (i < pf->num_alloc_vsi && pf->vsi[i])
J
Jesse Brandeburg 已提交
6822
		i++;
M
Mitch Williams 已提交
6823
	if (i >= pf->num_alloc_vsi) {
J
Jesse Brandeburg 已提交
6824 6825 6826 6827 6828
		i = 0;
		while (i < pf->next_vsi && pf->vsi[i])
			i++;
	}

M
Mitch Williams 已提交
6829
	if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
J
Jesse Brandeburg 已提交
6830 6831 6832
		vsi_idx = i;             /* Found one! */
	} else {
		ret = -ENODEV;
6833
		goto unlock_pf;  /* out of VSI slots! */
J
Jesse Brandeburg 已提交
6834 6835 6836 6837 6838 6839
	}
	pf->next_vsi = ++i;

	vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
	if (!vsi) {
		ret = -ENOMEM;
6840
		goto unlock_pf;
J
Jesse Brandeburg 已提交
6841 6842 6843 6844 6845 6846 6847 6848
	}
	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;
6849 6850
	vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
				pf->rss_table_size : 64;
J
Jesse Brandeburg 已提交
6851 6852 6853
	vsi->netdev_registered = false;
	vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
	INIT_LIST_HEAD(&vsi->mac_filter_list);
6854
	vsi->irqs_ready = false;
J
Jesse Brandeburg 已提交
6855

6856 6857 6858 6859
	ret = i40e_set_num_rings_in_vsi(vsi);
	if (ret)
		goto err_rings;

6860
	ret = i40e_vsi_alloc_arrays(vsi, true);
A
Anjali Singhai Jain 已提交
6861
	if (ret)
6862
		goto err_rings;
6863

J
Jesse Brandeburg 已提交
6864 6865 6866 6867 6868
	/* Setup default MSIX irq handler for VSI */
	i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);

	pf->vsi[vsi_idx] = vsi;
	ret = vsi_idx;
6869 6870
	goto unlock_pf;

6871
err_rings:
6872 6873 6874
	pf->next_vsi = i - 1;
	kfree(vsi);
unlock_pf:
J
Jesse Brandeburg 已提交
6875 6876 6877 6878
	mutex_unlock(&pf->switch_mutex);
	return ret;
}

A
Anjali Singhai Jain 已提交
6879 6880 6881
/**
 * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
 * @type: VSI pointer
6882
 * @free_qvectors: a bool to specify if q_vectors need to be freed.
A
Anjali Singhai Jain 已提交
6883 6884 6885 6886
 *
 * On error: returns error code (negative)
 * On success: returns 0
 **/
6887
static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
A
Anjali Singhai Jain 已提交
6888 6889
{
	/* free the ring and vector containers */
6890 6891 6892 6893
	if (free_qvectors) {
		kfree(vsi->q_vectors);
		vsi->q_vectors = NULL;
	}
A
Anjali Singhai Jain 已提交
6894 6895 6896 6897 6898
	kfree(vsi->tx_rings);
	vsi->tx_rings = NULL;
	vsi->rx_rings = NULL;
}

J
Jesse Brandeburg 已提交
6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928 6929 6930
/**
 * 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;
	}

6931
	/* updates the PF for this cleared vsi */
J
Jesse Brandeburg 已提交
6932 6933 6934
	i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
	i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);

6935
	i40e_vsi_free_arrays(vsi, true);
6936

J
Jesse Brandeburg 已提交
6937 6938 6939 6940 6941 6942 6943 6944 6945 6946 6947 6948
	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;
}

6949 6950 6951 6952
/**
 * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
 * @vsi: the VSI being cleaned
 **/
6953
static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6954 6955 6956
{
	int i;

6957
	if (vsi->tx_rings && vsi->tx_rings[0]) {
N
Neerav Parikh 已提交
6958
		for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6959 6960 6961 6962
			kfree_rcu(vsi->tx_rings[i], rcu);
			vsi->tx_rings[i] = NULL;
			vsi->rx_rings[i] = NULL;
		}
6963
	}
6964 6965
}

J
Jesse Brandeburg 已提交
6966 6967 6968 6969 6970 6971
/**
 * 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)
{
6972
	struct i40e_ring *tx_ring, *rx_ring;
J
Jesse Brandeburg 已提交
6973 6974 6975 6976
	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
6977
	for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6978
		/* allocate space for both Tx and Rx in one shot */
6979 6980 6981
		tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
		if (!tx_ring)
			goto err_out;
J
Jesse Brandeburg 已提交
6982 6983 6984 6985 6986 6987 6988 6989 6990 6991

		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;
6992
		vsi->tx_rings[i] = tx_ring;
J
Jesse Brandeburg 已提交
6993

6994
		rx_ring = &tx_ring[1];
J
Jesse Brandeburg 已提交
6995 6996 6997 6998 6999 7000 7001 7002 7003 7004 7005 7006 7007
		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);
7008
		vsi->rx_rings[i] = rx_ring;
J
Jesse Brandeburg 已提交
7009 7010 7011
	}

	return 0;
7012 7013 7014 7015

err_out:
	i40e_vsi_clear_rings(vsi);
	return -ENOMEM;
J
Jesse Brandeburg 已提交
7016 7017 7018 7019 7020 7021 7022 7023 7024 7025 7026
}

/**
 * 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)
{
7027 7028 7029
	vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
					I40E_MIN_MSIX, vectors);
	if (vectors < 0) {
J
Jesse Brandeburg 已提交
7030
		dev_info(&pf->pdev->dev,
7031
			 "MSI-X vector reservation failed: %d\n", vectors);
J
Jesse Brandeburg 已提交
7032 7033 7034 7035 7036 7037 7038 7039 7040 7041 7042 7043
		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.
 *
7044
 * Returns the number of vectors reserved or negative on failure
J
Jesse Brandeburg 已提交
7045 7046 7047 7048
 **/
static int i40e_init_msix(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
S
Shannon Nelson 已提交
7049
	int vectors_left;
J
Jesse Brandeburg 已提交
7050
	int v_budget, i;
7051
	int v_actual;
J
Jesse Brandeburg 已提交
7052 7053 7054 7055 7056 7057 7058

	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
7059 7060 7061 7062 7063
	 *	- 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
7064
	 *   - The number of VMDq pairs
7065 7066 7067
#ifdef I40E_FCOE
	 *   - The number of FCOE qps.
#endif
J
Jesse Brandeburg 已提交
7068 7069 7070 7071 7072
	 * 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
7073 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092 7093 7094 7095
	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;
		}
	}
7096

7097
#ifdef I40E_FCOE
S
Shannon Nelson 已提交
7098
	/* can we reserve enough for FCoE? */
7099
	if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
S
Shannon Nelson 已提交
7100 7101 7102 7103 7104 7105
		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;
7106
		v_budget += pf->num_fcoe_msix;
S
Shannon Nelson 已提交
7107
		vectors_left -= pf->num_fcoe_msix;
7108
	}
S
Shannon Nelson 已提交
7109

7110
#endif
S
Shannon Nelson 已提交
7111 7112 7113 7114 7115 7116 7117 7118 7119 7120 7121 7122 7123 7124 7125 7126 7127 7128
	/* 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
7129 7130 7131 7132 7133 7134 7135 7136

	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;
7137
	v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7138

7139
	if (v_actual != v_budget) {
7140 7141 7142 7143 7144
		/* 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.
		 */
7145 7146 7147 7148
#ifdef I40E_FCOE
		pf->num_fcoe_qps = 0;
		pf->num_fcoe_msix = 0;
#endif
7149 7150 7151
		pf->num_vmdq_msix = 0;
	}

7152
	if (v_actual < I40E_MIN_MSIX) {
J
Jesse Brandeburg 已提交
7153 7154 7155 7156 7157
		pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
		kfree(pf->msix_entries);
		pf->msix_entries = NULL;
		return -ENODEV;

7158
	} else if (v_actual == I40E_MIN_MSIX) {
J
Jesse Brandeburg 已提交
7159 7160 7161 7162 7163 7164
		/* 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;

7165 7166 7167
	} else if (v_actual != v_budget) {
		int vec;

7168
		/* reserve the misc vector */
7169
		vec = v_actual - 1;
7170

J
Jesse Brandeburg 已提交
7171 7172
		/* Scale vector usage down */
		pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7173
		pf->num_vmdq_vsis = 1;
S
Shannon Nelson 已提交
7174 7175
		pf->num_vmdq_qps = 1;
		pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
J
Jesse Brandeburg 已提交
7176 7177 7178 7179 7180 7181 7182

		/* partition out the remaining vectors */
		switch (vec) {
		case 2:
			pf->num_lan_msix = 1;
			break;
		case 3:
7183 7184 7185 7186 7187 7188 7189
#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
7190
			pf->num_lan_msix = 2;
7191
#endif
J
Jesse Brandeburg 已提交
7192 7193
			break;
		default:
7194 7195 7196 7197 7198 7199 7200
#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
7201 7202
			/* give the rest to the PF */
			pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
J
Jesse Brandeburg 已提交
7203 7204 7205 7206
			break;
		}
	}

7207 7208 7209 7210 7211
	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;
	}
7212 7213 7214 7215 7216 7217 7218
#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
7219
	return v_actual;
J
Jesse Brandeburg 已提交
7220 7221
}

7222
/**
7223
 * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7224 7225 7226 7227 7228
 * @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.
 **/
7229
static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7230 7231 7232 7233 7234 7235 7236 7237 7238 7239 7240 7241 7242
{
	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
7243
			       i40e_napi_poll, NAPI_POLL_WEIGHT);
7244

7245 7246 7247
	q_vector->rx.latency_range = I40E_LOW_LATENCY;
	q_vector->tx.latency_range = I40E_LOW_LATENCY;

7248 7249 7250 7251 7252 7253
	/* tie q_vector and vsi together */
	vsi->q_vectors[v_idx] = q_vector;

	return 0;
}

J
Jesse Brandeburg 已提交
7254
/**
7255
 * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
J
Jesse Brandeburg 已提交
7256 7257 7258 7259 7260
 * @vsi: the VSI being configured
 *
 * We allocate one q_vector per queue interrupt.  If allocation fails we
 * return -ENOMEM.
 **/
7261
static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
J
Jesse Brandeburg 已提交
7262 7263 7264
{
	struct i40e_pf *pf = vsi->back;
	int v_idx, num_q_vectors;
7265
	int err;
J
Jesse Brandeburg 已提交
7266 7267 7268 7269 7270 7271 7272 7273 7274 7275

	/* 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++) {
7276
		err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7277 7278
		if (err)
			goto err_out;
J
Jesse Brandeburg 已提交
7279 7280 7281
	}

	return 0;
7282 7283 7284 7285 7286 7287

err_out:
	while (v_idx--)
		i40e_free_q_vector(vsi, v_idx);

	return err;
J
Jesse Brandeburg 已提交
7288 7289 7290 7291 7292 7293 7294 7295
}

/**
 * i40e_init_interrupt_scheme - Determine proper interrupt scheme
 * @pf: board private structure to initialize
 **/
static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
{
7296 7297
	int vectors = 0;
	ssize_t size;
J
Jesse Brandeburg 已提交
7298 7299

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7300 7301
		vectors = i40e_init_msix(pf);
		if (vectors < 0) {
J
Jesse Brandeburg 已提交
7302
			pf->flags &= ~(I40E_FLAG_MSIX_ENABLED	|
7303 7304 7305
#ifdef I40E_FCOE
				       I40E_FLAG_FCOE_ENABLED	|
#endif
J
Jesse Brandeburg 已提交
7306
				       I40E_FLAG_RSS_ENABLED	|
7307
				       I40E_FLAG_DCB_CAPABLE	|
J
Jesse Brandeburg 已提交
7308 7309 7310 7311
				       I40E_FLAG_SRIOV_ENABLED	|
				       I40E_FLAG_FD_SB_ENABLED	|
				       I40E_FLAG_FD_ATR_ENABLED	|
				       I40E_FLAG_VMDQ_ENABLED);
J
Jesse Brandeburg 已提交
7312 7313 7314 7315 7316 7317 7318 7319

			/* 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
7320
		dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7321 7322 7323 7324
		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
7325 7326
			pf->flags &= ~I40E_FLAG_MSI_ENABLED;
		}
7327
		vectors = 1;  /* one MSI or Legacy vector */
J
Jesse Brandeburg 已提交
7328 7329
	}

7330
	if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
C
Catherine Sullivan 已提交
7331
		dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7332

7333 7334 7335 7336 7337 7338
	/* set up vector assignment tracking */
	size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
	pf->irq_pile = kzalloc(size, GFP_KERNEL);
	pf->irq_pile->num_entries = vectors;
	pf->irq_pile->search_hint = 0;

J
Jesse Brandeburg 已提交
7339
	/* track first vector for misc interrupts */
7340
	(void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
J
Jesse Brandeburg 已提交
7341 7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359 7360
}

/**
 * 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,
7361
				  i40e_intr, 0, pf->int_name, pf);
J
Jesse Brandeburg 已提交
7362 7363
		if (err) {
			dev_info(&pf->pdev->dev,
C
Catherine Sullivan 已提交
7364
				 "request_irq for %s failed: %d\n",
7365
				 pf->int_name, err);
J
Jesse Brandeburg 已提交
7366 7367 7368 7369
			return -EFAULT;
		}
	}

7370
	i40e_enable_misc_int_causes(pf);
J
Jesse Brandeburg 已提交
7371 7372 7373 7374 7375 7376 7377 7378 7379 7380 7381 7382 7383 7384 7385 7386 7387 7388

	/* 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;
}

/**
 * i40e_config_rss - Prepare for RSS if used
 * @pf: board private structure
 **/
static int i40e_config_rss(struct i40e_pf *pf)
{
7389
	u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7390
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7391 7392 7393 7394
	struct i40e_hw *hw = &pf->hw;
	u32 lut = 0;
	int i, j;
	u64 hena;
7395
	u32 reg_val;
J
Jesse Brandeburg 已提交
7396

7397
	netdev_rss_key_fill(rss_key, sizeof(rss_key));
J
Jesse Brandeburg 已提交
7398
	for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7399
		wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
J
Jesse Brandeburg 已提交
7400 7401 7402 7403

	/* 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);
7404
	hena |= I40E_DEFAULT_RSS_HENA;
J
Jesse Brandeburg 已提交
7405 7406 7407
	wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
	wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));

7408 7409
	vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);

7410 7411
	/* Check capability and Set table size and register per hw expectation*/
	reg_val = rd32(hw, I40E_PFQF_CTL_0);
7412
	if (pf->rss_table_size == 512)
7413
		reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7414
	else
7415 7416 7417
		reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
	wr32(hw, I40E_PFQF_CTL_0, reg_val);

J
Jesse Brandeburg 已提交
7418
	/* Populate the LUT with max no. of queues in round robin fashion */
7419
	for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
J
Jesse Brandeburg 已提交
7420 7421 7422 7423 7424 7425 7426 7427

		/* The assumption is that lan qp count will be the highest
		 * qp count for any PF VSI that needs RSS.
		 * If multiple VSIs need RSS support, all the qp counts
		 * for those VSIs should be a power of 2 for RSS to work.
		 * If LAN VSI is the only consumer for RSS then this requirement
		 * is not necessary.
		 */
7428
		if (j == vsi->rss_size)
J
Jesse Brandeburg 已提交
7429 7430 7431 7432 7433 7434 7435 7436 7437 7438 7439 7440 7441
			j = 0;
		/* lut = 4-byte sliding window of 4 lut entries */
		lut = (lut << 8) | (j &
			 ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
		/* On i = 3, we have 4 entries in lut; write to the register */
		if ((i & 3) == 3)
			wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
	}
	i40e_flush(hw);

	return 0;
}

7442 7443 7444 7445 7446 7447 7448 7449 7450 7451
/**
 * 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)
{
7452 7453 7454
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
	int new_rss_size;

7455 7456 7457
	if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
		return 0;

7458
	new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7459

7460 7461
	if (queue_count != vsi->num_queue_pairs) {
		vsi->req_queue_pairs = queue_count;
7462 7463
		i40e_prep_for_reset(pf);

7464
		pf->rss_size = new_rss_size;
7465 7466 7467 7468 7469 7470 7471 7472

		i40e_reset_and_rebuild(pf, true);
		i40e_config_rss(pf);
	}
	dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
	return pf->rss_size;
}

7473 7474 7475 7476 7477 7478 7479 7480 7481 7482 7483 7484 7485 7486 7487 7488 7489 7490 7491 7492 7493 7494 7495 7496 7497 7498 7499 7500 7501 7502 7503 7504
/**
 * 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;

7505
	/* Set the valid bit for this PF */
7506 7507 7508 7509 7510 7511 7512 7513 7514 7515 7516 7517 7518 7519 7520 7521 7522 7523 7524 7525 7526 7527 7528 7529 7530 7531 7532 7533 7534 7535 7536 7537 7538 7539 7540 7541 7542 7543 7544 7545 7546 7547 7548 7549 7550 7551 7552 7553 7554 7555 7556 7557 7558 7559 7560 7561 7562 7563 7564 7565 7566 7567 7568 7569 7570 7571 7572 7573 7574 7575 7576 7577 7578 7579 7580 7581 7582 7583 7584 7585 7586 7587 7588 7589 7590 7591 7592 7593 7594
	bw_data.pf_valid_bits = cpu_to_le16(1 << pf->hw.pf_id);
	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,
			 "Cannot acquire NVM for read access, err %d: aq_err %d\n",
			 ret, last_aq_status);
		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) {
		dev_info(&pf->pdev->dev, "NVM read error, err %d aq_err %d\n",
			 ret, last_aq_status);
		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,
			 "Cannot acquire NVM for write access, err %d: aq_err %d\n",
			 ret, last_aq_status);
		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,
			 "BW settings NOT SAVED, err %d aq_err %d\n",
			 ret, last_aq_status);
bw_commit_out:

	return ret;
}

J
Jesse Brandeburg 已提交
7595 7596 7597 7598 7599 7600 7601 7602 7603 7604 7605 7606 7607 7608 7609
/**
 * 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
7610
	pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
J
Jesse Brandeburg 已提交
7611 7612 7613 7614 7615 7616 7617 7618 7619 7620
	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     |
7621 7622 7623 7624 7625 7626
		    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
7627

7628 7629 7630 7631
	/* 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;

7632 7633 7634
	/* Depending on PF configurations, it is possible that the RSS
	 * maximum might end up larger than the available queues
	 */
J
Jesse Brandeburg 已提交
7635
	pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
P
Paul M Stillwell Jr 已提交
7636
	pf->rss_size = 1;
7637
	pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7638 7639
	pf->rss_size_max = min_t(int, pf->rss_size_max,
				 pf->hw.func_caps.num_tx_qp);
J
Jesse Brandeburg 已提交
7640 7641
	if (pf->hw.func_caps.rss) {
		pf->flags |= I40E_FLAG_RSS_ENABLED;
7642
		pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
J
Jesse Brandeburg 已提交
7643 7644
	}

7645 7646 7647 7648
	/* MFP mode enabled */
	if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
		pf->flags |= I40E_FLAG_MFP_ENABLED;
		dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7649 7650 7651 7652 7653 7654 7655
		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);
7656 7657
	}

7658 7659 7660 7661 7662
	/* 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;
7663
		/* Setup a counter for fd_atr per PF */
7664
		pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7665
		if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
J
Jesse Brandeburg 已提交
7666
			pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7667
			/* Setup a counter for fd_sb per PF */
7668
			pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7669 7670
		} else {
			dev_info(&pf->pdev->dev,
A
Anjali Singhai Jain 已提交
7671
				 "Flow Director Sideband mode Disabled in MFP mode\n");
J
Jesse Brandeburg 已提交
7672
		}
7673 7674 7675 7676
		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
7677 7678 7679 7680 7681 7682 7683 7684
	}

	if (pf->hw.func_caps.vmdq) {
		pf->flags |= I40E_FLAG_VMDQ_ENABLED;
		pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
		pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
	}

7685 7686 7687 7688 7689 7690
#ifdef I40E_FCOE
	err = i40e_init_pf_fcoe(pf);
	if (err)
		dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);

#endif /* I40E_FCOE */
J
Jesse Brandeburg 已提交
7691
#ifdef CONFIG_PCI_IOV
7692
	if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
J
Jesse Brandeburg 已提交
7693 7694 7695 7696 7697 7698 7699 7700 7701 7702 7703 7704 7705 7706 7707 7708 7709 7710 7711 7712 7713 7714
		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 */
	pf->eeprom_version = 0xDEAD;
	pf->lan_veb = I40E_NO_VEB;
	pf->lan_vsi = I40E_NO_VSI;

	/* 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;

7715 7716
	pf->tx_timeout_recovery_level = 1;

J
Jesse Brandeburg 已提交
7717 7718
	mutex_init(&pf->switch_mutex);

G
Greg Rose 已提交
7719 7720 7721 7722
	/* 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
7723 7724 7725 7726
sw_init_done:
	return err;
}

7727 7728 7729 7730 7731 7732 7733 7734 7735 7736 7737 7738 7739 7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751 7752
/**
 * 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;
7753
		pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7754 7755 7756 7757 7758
		/* 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;
		dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7759 7760 7761 7762
		/* 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;
7763 7764 7765 7766
	}
	return need_reset;
}

J
Jesse Brandeburg 已提交
7767 7768 7769 7770 7771 7772 7773 7774 7775 7776
/**
 * 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;
7777 7778
	struct i40e_pf *pf = vsi->back;
	bool need_reset;
J
Jesse Brandeburg 已提交
7779 7780 7781 7782 7783 7784

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

7785 7786 7787 7788 7789
	need_reset = i40e_set_ntuple(pf, features);

	if (need_reset)
		i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));

J
Jesse Brandeburg 已提交
7790 7791 7792
	return 0;
}

7793 7794 7795 7796 7797 7798 7799 7800 7801 7802 7803 7804 7805 7806 7807 7808 7809 7810 7811 7812 7813 7814 7815 7816 7817 7818 7819 7820 7821 7822 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 7848 7849 7850 7851 7852 7853 7854 7855 7856 7857 7858 7859 7860 7861 7862 7863 7864 7865 7866 7867 7868 7869 7870 7871 7872 7873 7874 7875 7876 7877 7878 7879 7880 7881 7882 7883 7884 7885 7886 7887 7888 7889 7890
#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) {
		netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
		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) {
		netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
			    ntohs(port));
		return;
	}

	/* New port: add it and mark its index in the bitmap */
	pf->vxlan_ports[next_idx] = port;
	pf->pending_vxlan_bitmap |= (1 << next_idx);

	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;

		pf->pending_vxlan_bitmap |= (1 << idx);

		pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
	} else {
		netdev_warn(netdev, "Port %d was not found, not deleting\n",
			    ntohs(port));
	}
}

#endif
7891
static int i40e_get_phys_port_id(struct net_device *netdev,
7892
				 struct netdev_phys_item_id *ppid)
7893 7894 7895 7896 7897 7898 7899 7900 7901 7902 7903 7904 7905 7906
{
	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;
}

7907 7908 7909 7910 7911 7912 7913 7914
/**
 * 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
 */
7915 7916
static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
			    struct net_device *dev,
7917
			    const unsigned char *addr, u16 vid,
7918 7919 7920 7921 7922 7923 7924 7925 7926
			    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;

7927 7928 7929 7930 7931
	if (vid) {
		pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
		return -EINVAL;
	}

7932 7933 7934 7935 7936 7937 7938 7939 7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953
	/* 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;
}

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 7999 8000 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8011 8012 8013 8014 8015 8016 8017 8018 8019 8020 8021 8022 8023 8024 8025 8026 8027 8028 8029 8030 8031 8032 8033 8034 8035 8036 8037 8038 8039 8040 8041 8042 8043 8044 8045 8046 8047 8048 8049 8050 8051 8052 8053 8054 8055 8056 8057 8058 8059 8060 8061 8062 8063 8064 8065
#ifdef HAVE_BRIDGE_ATTRIBS
/**
 * 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,
				   struct nlmsghdr *nlh)
{
	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;
			i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
			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
 *
 * Return the mode in which the hardware bridge is operating in
 * i.e VEB or VEPA.
 **/
#ifdef HAVE_BRIDGE_FILTER
static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
				   struct net_device *dev,
				   u32 __always_unused filter_mask)
#else
static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
				   struct net_device *dev)
#endif /* HAVE_BRIDGE_FILTER */
{
	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;

	return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode);
}
#endif /* HAVE_BRIDGE_ATTRIBS */

8066
static const struct net_device_ops i40e_netdev_ops = {
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	.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
8075
	.ndo_do_ioctl		= i40e_ioctl,
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	.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,
8083 8084 8085 8086
#ifdef I40E_FCOE
	.ndo_fcoe_enable	= i40e_fcoe_enable,
	.ndo_fcoe_disable	= i40e_fcoe_disable,
#endif
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	.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,
8090
	.ndo_set_vf_rate	= i40e_ndo_set_vf_bw,
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Jesse Brandeburg 已提交
8091
	.ndo_get_vf_config	= i40e_ndo_get_vf_config,
M
Mitch Williams 已提交
8092
	.ndo_set_vf_link_state	= i40e_ndo_set_vf_link_state,
8093
	.ndo_set_vf_spoofchk	= i40e_ndo_set_vf_spoofchk,
8094 8095 8096 8097
#ifdef CONFIG_I40E_VXLAN
	.ndo_add_vxlan_port	= i40e_add_vxlan_port,
	.ndo_del_vxlan_port	= i40e_del_vxlan_port,
#endif
8098
	.ndo_get_phys_port_id	= i40e_get_phys_port_id,
8099
	.ndo_fdb_add		= i40e_ndo_fdb_add,
8100 8101 8102 8103
#ifdef HAVE_BRIDGE_ATTRIBS
	.ndo_bridge_getlink	= i40e_ndo_bridge_getlink,
	.ndo_bridge_setlink	= i40e_ndo_bridge_setlink,
#endif /* HAVE_BRIDGE_ATTRIBS */
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};

/**
 * 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)
{
8114
	u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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Jesse Brandeburg 已提交
8115 8116 8117 8118 8119 8120 8121 8122
	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);
8123
	netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
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8124 8125 8126 8127 8128 8129 8130
	if (!netdev)
		return -ENOMEM;

	vsi->netdev = netdev;
	np = netdev_priv(netdev);
	np->vsi = vsi;

8131
	netdev->hw_enc_features |= NETIF_F_IP_CSUM	 |
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Jesse Brandeburg 已提交
8132
				  NETIF_F_GSO_UDP_TUNNEL |
8133
				  NETIF_F_TSO;
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8134 8135 8136 8137 8138 8139 8140 8141 8142 8143 8144

	netdev->features = NETIF_F_SG		       |
			   NETIF_F_IP_CSUM	       |
			   NETIF_F_SCTP_CSUM	       |
			   NETIF_F_HIGHDMA	       |
			   NETIF_F_GSO_UDP_TUNNEL      |
			   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		       |
8145
			   NETIF_F_TSO_ECN	       |
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8146 8147 8148 8149 8150
			   NETIF_F_TSO6		       |
			   NETIF_F_RXCSUM	       |
			   NETIF_F_RXHASH	       |
			   0;

8151 8152 8153
	if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
		netdev->features |= NETIF_F_NTUPLE;

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	/* 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);
8159
		ether_addr_copy(mac_addr, hw->mac.perm_addr);
8160 8161 8162 8163
		/* 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.
8164
		 */
8165 8166 8167
		if (!i40e_rm_default_mac_filter(vsi, mac_addr))
			i40e_add_filter(vsi, mac_addr,
					I40E_VLAN_ANY, false, true);
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Jesse Brandeburg 已提交
8168 8169 8170 8171 8172 8173 8174
	} 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);
		i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
	}
8175
	i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
J
Jesse Brandeburg 已提交
8176

8177 8178
	ether_addr_copy(netdev->dev_addr, mac_addr);
	ether_addr_copy(netdev->perm_addr, mac_addr);
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8179 8180 8181 8182 8183 8184 8185 8186 8187 8188 8189 8190 8191 8192
	/* 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);
8193 8194 8195
#ifdef I40E_FCOE
	i40e_fcoe_config_netdev(netdev, vsi);
#endif
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8196 8197 8198 8199 8200 8201 8202 8203 8204 8205 8206 8207 8208 8209 8210 8211 8212 8213 8214

	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);
}

8215 8216 8217 8218 8219 8220 8221 8222 8223 8224 8225 8226 8227 8228 8229 8230 8231 8232 8233 8234 8235 8236 8237 8238
/**
 * 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];
	/* Uplink is a bridge in VEPA mode */
	if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
		return 0;

	/* Uplink is a bridge in VEB mode */
	return 1;
}

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Jesse Brandeburg 已提交
8239 8240 8241 8242 8243 8244 8245 8246 8247 8248 8249 8250 8251 8252 8253 8254 8255 8256 8257 8258 8259 8260 8261 8262 8263 8264 8265 8266 8267 8268 8269 8270
/**
 * 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;
	struct i40e_mac_filter *f, *ftmp;
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	struct i40e_vsi_context ctxt;
	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,
8271
				 "couldn't get PF vsi config, err %d, aq_err %d\n",
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Jesse Brandeburg 已提交
8272 8273 8274 8275 8276 8277 8278 8279 8280 8281 8282 8283
				 ret, pf->hw.aq.asq_last_status);
			return -ENOENT;
		}
		memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
		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 */
8284 8285
		if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
		    !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
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Jesse Brandeburg 已提交
8286 8287 8288 8289 8290 8291 8292 8293 8294 8295 8296 8297 8298 8299 8300 8301 8302 8303 8304 8305
			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,
					 "update vsi failed, aq_err=%d\n",
					 pf->hw.aq.asq_last_status);
				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.
8306 8307
			 * For MFP case the iSCSI PF would use this
			 * flow to enable LAN+iSCSI TC.
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Jesse Brandeburg 已提交
8308 8309 8310 8311 8312 8313 8314 8315 8316 8317 8318 8319 8320
			 */
			ret = i40e_vsi_config_tc(vsi, enabled_tc);
			if (ret) {
				dev_info(&pf->pdev->dev,
					 "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
					 enabled_tc, ret,
					 pf->hw.aq.asq_last_status);
				ret = -ENOENT;
			}
		}
		break;

	case I40E_VSI_FDIR:
8321 8322 8323
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = 0;
		ctxt.uplink_seid = vsi->uplink_seid;
8324
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8325
		ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8326 8327
		if (i40e_is_vsi_uplink_mode_veb(vsi)) {
			ctxt.info.valid_sections |=
8328
				cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8329
			ctxt.info.switch_id =
8330
				cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8331
		}
J
Jesse Brandeburg 已提交
8332 8333 8334 8335 8336 8337 8338
		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;
8339
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
J
Jesse Brandeburg 已提交
8340 8341 8342 8343 8344
		ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
8345 8346 8347 8348 8349 8350
		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);
		}
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Jesse Brandeburg 已提交
8351 8352 8353 8354 8355 8356 8357 8358 8359

		/* 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;
8360
		ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
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Jesse Brandeburg 已提交
8361 8362 8363 8364 8365
		ctxt.flags = I40E_AQ_VSI_TYPE_VF;

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
8366 8367 8368 8369 8370 8371
		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);
		}
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Jesse Brandeburg 已提交
8372 8373 8374

		ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
		ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8375 8376 8377 8378 8379 8380 8381
		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);
		}
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Jesse Brandeburg 已提交
8382 8383 8384 8385
		/* Setup the VSI tx/rx queue map for TC0 only for now */
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

8386 8387 8388 8389 8390 8391 8392 8393 8394 8395
#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 */
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Jesse Brandeburg 已提交
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	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,
				 "add vsi failed, aq_err=%d\n",
				 vsi->back->hw.aq.asq_last_status);
			ret = -ENOENT;
			goto err;
		}
		memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
		vsi->info.valid_sections = 0;
		vsi->seid = ctxt.seid;
		vsi->id = ctxt.vsi_number;
	}

	/* 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
8419 8420

		if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8421 8422 8423 8424 8425 8426 8427 8428 8429 8430 8431 8432 8433 8434 8435 8436
			struct i40e_aqc_remove_macvlan_element_data element;

			memset(&element, 0, sizeof(element));
			ether_addr_copy(element.mac_addr, f->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);
			}

			i40e_aq_mac_address_write(hw,
S
Shannon Nelson 已提交
8437 8438 8439
						  I40E_AQC_WRITE_TYPE_LAA_WOL,
						  f->macaddr, NULL);
		}
J
Jesse Brandeburg 已提交
8440 8441 8442 8443 8444 8445 8446 8447 8448 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 8491 8492 8493 8494 8495 8496
	}
	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,
			 "couldn't get vsi bw info, err %d, aq_err %d\n",
			 ret, pf->hw.aq.asq_last_status);
		/* 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 {
8497
			i40e_vsi_close(vsi);
J
Jesse Brandeburg 已提交
8498 8499 8500 8501 8502 8503 8504 8505 8506 8507 8508
		}
		i40e_vsi_disable_irq(vsi);
	}

	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);
	i40e_sync_vsi_filters(vsi);

	i40e_vsi_delete(vsi);
	i40e_vsi_free_q_vectors(vsi);
8509 8510 8511 8512
	if (vsi->netdev) {
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
J
Jesse Brandeburg 已提交
8513 8514 8515 8516 8517 8518 8519 8520 8521 8522 8523
	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
8524
	for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
8525 8526 8527 8528 8529 8530 8531 8532 8533 8534 8535 8536 8537 8538 8539 8540 8541 8542 8543 8544 8545 8546 8547 8548 8549 8550 8551 8552 8553 8554 8555 8556 8557 8558 8559
		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;

8560
	if (vsi->q_vectors[0]) {
J
Jesse Brandeburg 已提交
8561 8562 8563 8564 8565 8566
		dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
			 vsi->seid);
		return -EEXIST;
	}

	if (vsi->base_vector) {
8567
		dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
J
Jesse Brandeburg 已提交
8568 8569 8570 8571
			 vsi->seid, vsi->base_vector);
		return -EEXIST;
	}

8572
	ret = i40e_vsi_alloc_q_vectors(vsi);
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Jesse Brandeburg 已提交
8573 8574 8575 8576 8577 8578 8579 8580
	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;
	}

8581 8582 8583
	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
8584 8585
	if (vsi->base_vector < 0) {
		dev_info(&pf->pdev->dev,
8586 8587
			 "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
8588 8589 8590 8591 8592 8593 8594 8595 8596
		i40e_vsi_free_q_vectors(vsi);
		ret = -ENOENT;
		goto vector_setup_out;
	}

vector_setup_out:
	return ret;
}

8597 8598 8599 8600 8601 8602 8603 8604 8605 8606 8607 8608 8609 8610 8611 8612 8613 8614 8615 8616 8617 8618 8619 8620 8621 8622
/**
 * 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) {
8623 8624 8625
		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);
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
		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
8661 8662 8663 8664 8665 8666 8667 8668 8669 8670 8671 8672 8673 8674 8675 8676 8677 8678 8679 8680 8681 8682 8683 8684 8685 8686 8687 8688 8689 8690 8691 8692 8693 8694 8695 8696 8697 8698 8699 8700 8701 8702 8703
/**
 * 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
8704
		for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
8705 8706 8707 8708 8709 8710 8711 8712 8713 8714 8715 8716 8717 8718 8719 8720 8721
			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);
8722 8723 8724 8725 8726 8727 8728
		if (veb) {
			if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
				dev_info(&vsi->back->pdev->dev,
					 "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
					 __func__);
				return NULL;
			}
8729
			i40e_config_bridge_mode(veb);
8730
		}
J
Jesse Brandeburg 已提交
8731 8732 8733 8734 8735 8736 8737 8738 8739 8740 8741 8742 8743 8744 8745 8746 8747 8748
		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];
8749 8750
	if (!vsi)
		goto err_alloc;
J
Jesse Brandeburg 已提交
8751 8752 8753 8754 8755 8756 8757 8758
	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 */
8759 8760
	ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
				vsi->idx);
J
Jesse Brandeburg 已提交
8761
	if (ret < 0) {
8762 8763 8764
		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
8765 8766 8767 8768 8769 8770 8771 8772 8773 8774 8775 8776 8777 8778
		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:
8779
	case I40E_VSI_FCOE:
J
Jesse Brandeburg 已提交
8780 8781 8782 8783 8784 8785 8786 8787
		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
8788 8789 8790 8791
#ifdef CONFIG_I40E_DCB
		/* Setup DCB netlink interface */
		i40e_dcbnl_setup(vsi);
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
8792 8793 8794 8795 8796 8797 8798 8799 8800 8801 8802 8803 8804 8805 8806 8807 8808 8809 8810 8811 8812 8813 8814 8815 8816 8817 8818 8819 8820 8821 8822 8823 8824 8825 8826 8827 8828 8829 8830 8831 8832 8833 8834 8835 8836 8837 8838 8839 8840 8841 8842 8843 8844 8845 8846 8847 8848 8849 8850 8851 8852 8853 8854 8855 8856 8857 8858 8859 8860 8861 8862 8863 8864 8865 8866 8867 8868 8869 8870
		/* 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;
	}

	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,
			 "query veb bw config failed, aq_err=%d\n",
			 hw->aq.asq_last_status);
		goto out;
	}

	ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
						   &ets_data, NULL);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "query veb bw ets config failed, aq_err=%d\n",
			 hw->aq.asq_last_status);
		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;
8871
	veb->enabled_tc = ets_data.tc_valid_bits;
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Jesse Brandeburg 已提交
8872 8873 8874 8875 8876 8877 8878 8879 8880 8881 8882 8883 8884 8885 8886 8887 8888 8889 8890 8891 8892 8893 8894 8895 8896 8897 8898 8899 8900 8901 8902 8903 8904 8905 8906 8907 8908 8909 8910 8911 8912 8913 8914 8915 8916 8917 8918 8919 8920 8921 8922 8923 8924 8925 8926 8927 8928 8929 8930 8931 8932 8933 8934 8935 8936 8937 8938 8939 8940 8941 8942 8943 8944 8945 8946 8947 8948 8949 8950 8951 8952 8953 8954 8955 8956 8957
	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
8958
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
8959 8960 8961 8962 8963 8964 8965 8966 8967 8968 8969 8970 8971 8972 8973 8974 8975 8976 8977 8978 8979 8980 8981 8982 8983 8984 8985 8986 8987 8988 8989 8990 8991 8992 8993 8994 8995 8996 8997 8998 8999 9000 9001 9002 9003 9004 9005 9006 9007 9008 9009
		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
9010
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
9011 9012 9013 9014 9015 9016 9017 9018 9019 9020 9021 9022 9023 9024 9025 9026 9027 9028 9029 9030 9031 9032 9033 9034 9035 9036 9037 9038 9039 9040 9041 9042 9043 9044 9045 9046 9047
		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)
{
9048
	bool is_default = false;
K
Kevin Scott 已提交
9049
	bool is_cloud = false;
J
Jesse Brandeburg 已提交
9050 9051 9052 9053
	int ret;

	/* get a VEB from the hardware */
	ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
K
Kevin Scott 已提交
9054 9055
			      veb->enabled_tc, is_default,
			      is_cloud, &veb->seid, NULL);
J
Jesse Brandeburg 已提交
9056 9057 9058 9059 9060 9061 9062 9063 9064 9065 9066 9067 9068 9069 9070 9071 9072 9073 9074 9075 9076 9077 9078 9079 9080 9081 9082 9083 9084 9085 9086 9087 9088 9089 9090 9091 9092 9093 9094 9095 9096 9097 9098 9099 9100 9101 9102 9103 9104 9105 9106 9107 9108 9109 9110 9111 9112 9113 9114 9115 9116 9117 9118 9119 9120 9121
	if (ret) {
		dev_info(&veb->pf->pdev->dev,
			 "couldn't add VEB, err %d, aq_err %d\n",
			 ret, veb->pf->hw.aq.asq_last_status);
		return -EPERM;
	}

	/* get statistics counter */
	ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
					 &veb->stats_idx, NULL, NULL, NULL);
	if (ret) {
		dev_info(&veb->pf->pdev->dev,
			 "couldn't get VEB statistics idx, err %d, aq_err %d\n",
			 ret, veb->pf->hw.aq.asq_last_status);
		return -EPERM;
	}
	ret = i40e_veb_get_bw_info(veb);
	if (ret) {
		dev_info(&veb->pf->pdev->dev,
			 "couldn't get VEB bw info, err %d, aq_err %d\n",
			 ret, veb->pf->hw.aq.asq_last_status);
		i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
		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
9122
	for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
J
Jesse Brandeburg 已提交
9123 9124
		if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
			break;
M
Mitch Williams 已提交
9125
	if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
J
Jesse Brandeburg 已提交
9126 9127 9128 9129 9130 9131 9132 9133 9134 9135 9136 9137 9138 9139 9140 9141 9142 9143 9144 9145 9146 9147 9148 9149 9150 9151 9152 9153 9154 9155 9156 9157 9158 9159
		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
9160 9161
	if (vsi_idx == pf->lan_vsi)
		pf->lan_veb = veb->idx;
J
Jesse Brandeburg 已提交
9162 9163 9164 9165 9166 9167 9168 9169 9170 9171

	return veb;

err_veb:
	i40e_veb_clear(veb);
err_alloc:
	return NULL;
}

/**
9172
 * i40e_setup_pf_switch_element - set PF vars based on switch type
J
Jesse Brandeburg 已提交
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 9214 9215 9216 9217 9218 9219 9220 9221 9222 9223 9224 9225 9226 9227 9228 9229 9230 9231 9232 9233 9234 9235 9236 9237 9238 9239 9240 9241 9242 9243 9244 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 9280 9281 9282 9283 9284 9285 9286 9287 9288 9289 9290 9291 9292 9293 9294 9295 9296 9297 9298 9299 9300 9301 9302 9303 9304 9305 9306 9307 9308 9309 9310 9311 9312
 * @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,
				 "get switch config failed %d aq_err=%x\n",
				 ret, pf->hw.aq.asq_last_status);
			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
9313
 * @reinit: if the Main VSI needs to re-initialized.
J
Jesse Brandeburg 已提交
9314 9315 9316
 *
 * Returns 0 on success, negative value on failure
 **/
9317
static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
J
Jesse Brandeburg 已提交
9318 9319 9320 9321 9322 9323 9324 9325 9326 9327 9328 9329 9330 9331
{
	int ret;

	/* find out what's out there already */
	ret = i40e_fetch_switch_configuration(pf, false);
	if (ret) {
		dev_info(&pf->pdev->dev,
			 "couldn't fetch switch config, err %d, aq_err %d\n",
			 ret, pf->hw.aq.asq_last_status);
		return ret;
	}
	i40e_pf_reset_stats(pf);

	/* first time setup */
9332
	if (pf->lan_vsi == I40E_NO_VSI || reinit) {
J
Jesse Brandeburg 已提交
9333 9334 9335 9336 9337 9338 9339 9340 9341 9342
		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;
9343 9344 9345 9346
		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
9347 9348 9349 9350 9351 9352 9353 9354 9355 9356 9357 9358 9359 9360
		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;
		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]);

9361 9362
	i40e_fdir_sb_setup(pf);

J
Jesse Brandeburg 已提交
9363 9364 9365 9366 9367 9368 9369 9370 9371 9372 9373 9374 9375 9376 9377
	/* 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))
		i40e_config_rss(pf);

	/* fill in link information and enable LSE reporting */
9378
	i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9379 9380
	i40e_link_event(pf);

9381
	/* Initialize user-specific link properties */
J
Jesse Brandeburg 已提交
9382 9383
	pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
				  I40E_AQ_AN_COMPLETED) ? true : false);
9384

J
Jacob Keller 已提交
9385 9386
	i40e_ptp_init(pf);

J
Jesse Brandeburg 已提交
9387 9388 9389 9390 9391 9392 9393 9394 9395 9396 9397 9398
	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;
9399 9400 9401
#ifdef I40E_FCOE
	pf->num_fcoe_qps = 0;
#endif
J
Jesse Brandeburg 已提交
9402 9403 9404 9405 9406 9407 9408

	/* 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;

9409
	if ((queues_left == 1) ||
9410
	    !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
J
Jesse Brandeburg 已提交
9411 9412 9413 9414 9415
		/* one qp for PF, no queues for anything else */
		queues_left = 0;
		pf->rss_size = pf->num_lan_qps = 1;

		/* make sure all the fancies are disabled */
J
Jesse Brandeburg 已提交
9416
		pf->flags &= ~(I40E_FLAG_RSS_ENABLED	|
9417 9418 9419
#ifdef I40E_FCOE
			       I40E_FLAG_FCOE_ENABLED	|
#endif
J
Jesse Brandeburg 已提交
9420 9421
			       I40E_FLAG_FD_SB_ENABLED	|
			       I40E_FLAG_FD_ATR_ENABLED	|
9422
			       I40E_FLAG_DCB_CAPABLE	|
J
Jesse Brandeburg 已提交
9423 9424
			       I40E_FLAG_SRIOV_ENABLED	|
			       I40E_FLAG_VMDQ_ENABLED);
9425 9426
	} else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
				  I40E_FLAG_FD_SB_ENABLED |
9427
				  I40E_FLAG_FD_ATR_ENABLED |
9428
				  I40E_FLAG_DCB_CAPABLE))) {
9429 9430 9431 9432 9433
		/* one qp for PF */
		pf->rss_size = pf->num_lan_qps = 1;
		queues_left -= pf->num_lan_qps;

		pf->flags &= ~(I40E_FLAG_RSS_ENABLED	|
9434 9435 9436
#ifdef I40E_FCOE
			       I40E_FLAG_FCOE_ENABLED	|
#endif
9437 9438 9439 9440
			       I40E_FLAG_FD_SB_ENABLED	|
			       I40E_FLAG_FD_ATR_ENABLED	|
			       I40E_FLAG_DCB_ENABLED	|
			       I40E_FLAG_VMDQ_ENABLED);
J
Jesse Brandeburg 已提交
9441
	} else {
9442
		/* Not enough queues for all TCs */
9443
		if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9444
		    (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9445
			pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9446 9447
			dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
		}
9448 9449 9450 9451 9452
		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);

9453 9454 9455
		queues_left -= pf->num_lan_qps;
	}

9456 9457 9458 9459 9460 9461 9462 9463 9464 9465 9466 9467 9468 9469 9470 9471
#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
9472 9473 9474 9475 9476 9477 9478
	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
9479 9480 9481 9482
	}

	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
	    pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9483 9484
		pf->num_req_vfs = min_t(int, pf->num_req_vfs,
					(queues_left / pf->num_vf_qps));
J
Jesse Brandeburg 已提交
9485 9486 9487 9488 9489 9490 9491 9492 9493 9494
		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);
	}

9495
	pf->queues_left = queues_left;
9496 9497 9498
#ifdef I40E_FCOE
	dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
#endif
J
Jesse Brandeburg 已提交
9499 9500 9501 9502 9503 9504
}

/**
 * i40e_setup_pf_filter_control - Setup PF static filter control
 * @pf: PF to be setup
 *
9505
 * i40e_setup_pf_filter_control sets up a PF's initial filter control
J
Jesse Brandeburg 已提交
9506 9507 9508 9509 9510 9511 9512 9513 9514 9515 9516 9517 9518
 * 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
9519
	if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
J
Jesse Brandeburg 已提交
9520 9521 9522 9523 9524 9525 9526 9527 9528 9529 9530 9531
		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
9532 9533 9534 9535 9536 9537 9538 9539 9540 9541 9542 9543 9544 9545 9546 9547 9548 9549
#define INFO_STRING_LEN 255
static void i40e_print_features(struct i40e_pf *pf)
{
	struct i40e_hw *hw = &pf->hw;
	char *buf, *string;

	string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
	if (!string) {
		dev_err(&pf->pdev->dev, "Features string allocation failed\n");
		return;
	}

	buf = string;

	buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
#ifdef CONFIG_PCI_IOV
	buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
#endif
9550 9551 9552 9553
	buf += sprintf(buf, "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
9554 9555 9556 9557

	if (pf->flags & I40E_FLAG_RSS_ENABLED)
		buf += sprintf(buf, "RSS ");
	if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9558 9559 9560
		buf += sprintf(buf, "FD_ATR ");
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
		buf += sprintf(buf, "FD_SB ");
J
Jesse Brandeburg 已提交
9561
		buf += sprintf(buf, "NTUPLE ");
9562
	}
9563
	if (pf->flags & I40E_FLAG_DCB_CAPABLE)
J
Jesse Brandeburg 已提交
9564 9565 9566
		buf += sprintf(buf, "DCB ");
	if (pf->flags & I40E_FLAG_PTP)
		buf += sprintf(buf, "PTP ");
9567 9568 9569 9570
#ifdef I40E_FCOE
	if (pf->flags & I40E_FLAG_FCOE_ENABLED)
		buf += sprintf(buf, "FCOE ");
#endif
J
Jesse Brandeburg 已提交
9571 9572 9573 9574 9575 9576

	BUG_ON(buf > (string + INFO_STRING_LEN));
	dev_info(&pf->pdev->dev, "%s\n", string);
	kfree(string);
}

J
Jesse Brandeburg 已提交
9577 9578 9579 9580 9581
/**
 * i40e_probe - Device initialization routine
 * @pdev: PCI device information struct
 * @ent: entry in i40e_pci_tbl
 *
9582 9583
 * 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
9584 9585 9586 9587 9588 9589
 * 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)
{
9590
	struct i40e_aq_get_phy_abilities_resp abilities;
9591
	unsigned long ioremap_len;
J
Jesse Brandeburg 已提交
9592 9593
	struct i40e_pf *pf;
	struct i40e_hw *hw;
9594
	static u16 pfs_found;
9595
	u16 link_status;
J
Jesse Brandeburg 已提交
9596 9597
	int err = 0;
	u32 len;
9598
	u32 i;
J
Jesse Brandeburg 已提交
9599 9600 9601 9602 9603 9604

	err = pci_enable_device_mem(pdev);
	if (err)
		return err;

	/* set up for high or low dma */
9605 9606
	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
	if (err) {
9607 9608 9609 9610 9611 9612
		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
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
	}

	/* 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
9643

9644
	ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
A
Anjali Singhai 已提交
9645 9646 9647
			    I40E_MAX_CSR_SPACE);

	hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
J
Jesse Brandeburg 已提交
9648 9649 9650 9651 9652 9653 9654 9655 9656 9657 9658 9659 9660 9661
	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),
			 (unsigned int)pci_resource_len(pdev, 0), err);
		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);
9662
	pf->instance = pfs_found;
J
Jesse Brandeburg 已提交
9663

S
Shannon Nelson 已提交
9664 9665 9666 9667 9668
	if (debug != -1) {
		pf->msg_enable = pf->hw.debug_mask;
		pf->msg_enable = debug;
	}

9669 9670 9671 9672 9673 9674 9675 9676 9677 9678 9679
	/* 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
9680
	/* Reset here to make sure all is clean and to define PF 'n' */
9681
	i40e_clear_hw(hw);
J
Jesse Brandeburg 已提交
9682 9683 9684 9685 9686 9687 9688 9689 9690 9691 9692 9693
	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;
9694

9695
	snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9696 9697
		 "%s-%s:misc",
		 dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
J
Jesse Brandeburg 已提交
9698 9699 9700 9701 9702 9703 9704

	err = i40e_init_shared_code(hw);
	if (err) {
		dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
		goto err_pf_reset;
	}

9705 9706 9707
	/* set up a default setting for link flow control */
	pf->hw.fc.requested_mode = I40E_FC_NONE;

J
Jesse Brandeburg 已提交
9708 9709 9710 9711
	err = i40e_init_adminq(hw);
	dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
	if (err) {
		dev_info(&pdev->dev,
9712
			 "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
9713 9714 9715
		goto err_pf_reset;
	}

9716 9717
	if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
	    hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9718
		dev_info(&pdev->dev,
9719 9720 9721
			 "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))
9722
		dev_info(&pdev->dev,
9723
			 "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9724

9725 9726
	i40e_verify_eeprom(pf);

9727 9728 9729 9730
	/* 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");

9731
	i40e_clear_pxe_mode(hw);
J
Jesse Brandeburg 已提交
9732 9733 9734 9735 9736 9737 9738 9739 9740 9741 9742 9743 9744 9745 9746 9747 9748 9749 9750 9751 9752 9753 9754 9755 9756
	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;
	}

9757 9758 9759 9760 9761 9762 9763 9764 9765 9766
	/* 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
9767
	i40e_get_mac_addr(hw, hw->mac.addr);
9768
	if (!is_valid_ether_addr(hw->mac.addr)) {
J
Jesse Brandeburg 已提交
9769 9770 9771 9772 9773
		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);
9774
	ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9775 9776 9777
	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;
9778 9779 9780 9781 9782 9783 9784 9785 9786 9787 9788 9789
#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
9790 9791 9792

	pci_set_drvdata(pdev, pf);
	pci_save_state(pdev);
N
Neerav Parikh 已提交
9793 9794 9795
#ifdef CONFIG_I40E_DCB
	err = i40e_init_pf_dcb(pf);
	if (err) {
9796
		dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9797
		pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9798
		/* Continue without DCB enabled */
N
Neerav Parikh 已提交
9799 9800
	}
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
9801 9802 9803 9804 9805 9806 9807 9808 9809 9810

	/* 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;
	pf->link_check_timeout = jiffies;

S
Shannon Nelson 已提交
9811 9812 9813 9814
	/* WoL defaults to disabled */
	pf->wol_en = false;
	device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);

J
Jesse Brandeburg 已提交
9815 9816 9817 9818
	/* set up the main switch operations */
	i40e_determine_queue_usage(pf);
	i40e_init_interrupt_scheme(pf);

M
Mitch Williams 已提交
9819 9820 9821 9822
	/* 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
9823
	 */
M
Mitch Williams 已提交
9824 9825 9826 9827 9828 9829 9830
	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
9831
	pf->vsi = kzalloc(len, GFP_KERNEL);
9832 9833
	if (!pf->vsi) {
		err = -ENOMEM;
J
Jesse Brandeburg 已提交
9834
		goto err_switch_setup;
9835
	}
J
Jesse Brandeburg 已提交
9836

9837
	err = i40e_setup_pf_switch(pf, false);
J
Jesse Brandeburg 已提交
9838 9839 9840 9841
	if (err) {
		dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
		goto err_vsis;
	}
9842
	/* if FDIR VSI was set up, start it now */
M
Mitch Williams 已提交
9843
	for (i = 0; i < pf->num_alloc_vsi; i++) {
9844 9845 9846 9847 9848
		if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
			i40e_vsi_open(pf->vsi[i]);
			break;
		}
	}
J
Jesse Brandeburg 已提交
9849

J
Jesse Brandeburg 已提交
9850 9851 9852 9853 9854 9855 9856 9857 9858
	/* 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)
		dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);

9859 9860 9861 9862 9863 9864 9865
	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)
			dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
				 pf->hw.aq.asq_last_status);
9866
	}
J
Jesse Brandeburg 已提交
9867 9868 9869 9870 9871 9872 9873 9874 9875 9876 9877 9878 9879 9880 9881 9882 9883 9884 9885 9886
	/* 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;
		}
	}

9887
#ifdef CONFIG_PCI_IOV
J
Jesse Brandeburg 已提交
9888 9889
	/* prep for VF support */
	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9890 9891
	    (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
	    !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
J
Jesse Brandeburg 已提交
9892 9893 9894 9895 9896 9897 9898
		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
9899 9900 9901 9902 9903 9904 9905 9906 9907 9908

		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);
		}
J
Jesse Brandeburg 已提交
9909
	}
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#endif /* CONFIG_PCI_IOV */
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	pfs_found++;

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	i40e_dbg_pf_init(pf);

	/* tell the firmware that we're starting */
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	i40e_send_version(pf);
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	/* since everything's happy, start the service_task timer */
	mod_timer(&pf->service_timer,
		  round_jiffies(jiffies + pf->service_timer_period));

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#ifdef I40E_FCOE
	/* create FCoE interface */
	i40e_fcoe_vsi_setup(pf);

#endif
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	/* 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);

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	dev_info(&pdev->dev, "PCI-Express: %s %s\n",
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		(hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
		 hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
		 hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
		 "Unknown"),
		(hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
		 hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
		 hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
		 hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
		 "Unknown"));

	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");
	}

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	/* get the requested speeds from the fw */
	err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
	if (err)
		dev_info(&pf->pdev->dev, "get phy abilities failed, aq_err %d, advertised speed settings may not be correct\n",
			 err);
	pf->hw.phy.link_info.requested_speeds = abilities.link_speed;

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	/* print a string summarizing features */
	i40e_print_features(pf);

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	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);
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err_switch_setup:
	i40e_reset_interrupt_capability(pf);
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	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);
	i40e_status ret_code;
	int i;

	i40e_dbg_pf_exit(pf);

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	i40e_ptp_stop(pf);

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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);
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	i40e_fdir_teardown(pf);
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	if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
		i40e_free_vfs(pf);
		pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
	}

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	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 */
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	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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	/* 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 */
10101 10102 10103 10104 10105
	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;

	dev_info(&pdev->dev, "%s\n", __func__);
	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);

	dev_info(&pdev->dev, "%s\n", __func__);
10168 10169 10170 10171
	if (test_bit(__I40E_SUSPENDED, &pf->state))
		return;

	rtnl_lock();
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	i40e_handle_reset_warning(pf);
10173 10174 10175 10176 10177 10178 10179 10180 10181 10182
	rtnl_lock();
}

/**
 * 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);
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	struct i40e_hw *hw = &pf->hw;
10184 10185 10186 10187 10188 10189 10190

	set_bit(__I40E_SUSPENDED, &pf->state);
	set_bit(__I40E_DOWN, &pf->state);
	rtnl_lock();
	i40e_prep_for_reset(pf);
	rtnl_unlock();

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	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));

10194 10195
	i40e_clear_interrupt_scheme(pf);

10196
	if (system_state == SYSTEM_POWER_OFF) {
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		pci_wake_from_d3(pdev, pf->wol_en);
10198 10199 10200 10201 10202 10203 10204 10205 10206 10207 10208 10209
		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);
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	struct i40e_hw *hw = &pf->hw;
10211 10212 10213

	set_bit(__I40E_SUSPENDED, &pf->state);
	set_bit(__I40E_DOWN, &pf->state);
10214 10215
	del_timer_sync(&pf->service_timer);
	cancel_work_sync(&pf->service_task);
10216 10217 10218 10219
	rtnl_lock();
	i40e_prep_for_reset(pf);
	rtnl_unlock();

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	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);
10224 10225 10226
	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
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}

10229 10230 10231 10232 10233 10234 10235 10236 10237 10238 10239 10240 10241 10242 10243 10244 10245 10246 10247 10248 10249 10250 10251 10252 10253 10254 10255 10256 10257 10258 10259 10260 10261 10262 10263 10264 10265 10266 10267 10268
/**
 * 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) {
		dev_err(&pdev->dev,
			"%s: Cannot enable PCI device from suspend\n",
			__func__);
		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,
10280 10281 10282 10283 10284
#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);
10300

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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);