i40e_main.c 261.0 KB
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/*******************************************************************************
 *
 * Intel Ethernet Controller XL710 Family Linux Driver
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 * Copyright(c) 2013 - 2014 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 1
#define DRV_VERSION_BUILD 23
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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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	/* 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;
}

/**
 * i40e_pf_reset_stats - Reset all of the stats for the given pf
 * @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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/**
 * i40e_update_pf_stats - Update the pf statistics counters.
 * @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);
	i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
			   pf->stat_offsets_loaded,
			   &osd->eth.tx_discards,
			   &nsd->eth.tx_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),
1011
				   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);

1087 1088 1089 1090 1091 1092 1093 1094
	/* 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);
1126 1127 1128
#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
 * @is_vf: make sure its a vf filter, else doesn't matter
 * @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
 * @is_vf: make sure its a vf filter, else doesn't matter
 * @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
 * @is_vf: true if it is a vf
 * @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);
}

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/**
 * 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
1242 1243 1244
 *
 * Some older firmware configurations set up a default promiscuous VLAN
 * filter that needs to be removed.
1245
 **/
1246
static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
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{
	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)
1254
		return -EINVAL;
1255

1256
	memset(&element, 0, sizeof(element));
1257 1258 1259 1260 1261 1262
	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)
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		return -ENOENT;

	return 0;
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}

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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
 * @is_vf: make sure its a vf filter, else doesn't matter
 * @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;

1293
		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
 * @is_vf: make sure it's a vf filter, else doesn't matter
 * @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 {
		/* make sure we don't remove a filter in use by vf or netdev */
		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
 **/
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#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)
1390
#endif
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{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
1394 1395
	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;

1402 1403 1404 1405 1406
	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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	if (test_bit(__I40E_DOWN, &vsi->back->state) ||
	    test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
		return -EADDRNOTAVAIL;

1412 1413 1414 1415 1416 1417
	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,
1421
						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;
		}
	}

1431 1432
	if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
		struct i40e_aqc_remove_macvlan_element_data element;
1433

1434 1435 1436 1437 1438
		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 {
1439 1440 1441
		i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
				false, false);
	}
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1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458
	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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	num_tc_qps = vsi->alloc_queue_pairs/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 power-of-2 of the number of 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;

	/* 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)
2186
#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)
2225
#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++)
2318
		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++)
2337
		if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2338
			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++)
2356
		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++)
2377
		if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2378
			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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}

/**
 * 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;
	}

	/* initialize XPS */
	if (ring->q_vector && ring->netdev &&
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	    vsi->tc_config.numtc <= 1 &&
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	    !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
		netif_set_xps_queue(ring->netdev,
				    &ring->q_vector->affinity_mask,
				    ring->queue_index);

	/* 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));
2423 2424 2425
#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);
2427 2428 2429 2430 2431
	/* 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
2545 2546
	/* 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);

	i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));

	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;

	if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
		return;

	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
 **/
static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
{
	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          |
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	      I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
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	      I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
	      I40E_PFINT_ICR0_ENA_VFLR_MASK          |
	      I40E_PFINT_ICR0_ENA_ADMINQ_MASK;

	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)
{
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	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);

	i40e_enable_misc_int_causes(hw);

	/* 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);
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	/* skip the flush */
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}

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/**
 * i40e_irq_dynamic_disable - Disable default interrupt generation settings
 * @vsi: pointer to a vsi
 * @vector: enable a particular Hw Interrupt vector
 **/
void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
{
	struct i40e_pf *pf = vsi->back;
	struct i40e_hw *hw = &pf->hw;
	u32 val;

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

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/**
 * 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;

2938
	if (!q_vector->tx.ring && !q_vector->rx.ring)
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		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++) {
2963
		struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
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Jesse Brandeburg 已提交
2964

2965
		if (q_vector->tx.ring && q_vector->rx.ring) {
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2966 2967 2968
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "TxRx", rx_int_idx++);
			tx_int_idx++;
2969
		} else if (q_vector->rx.ring) {
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Jesse Brandeburg 已提交
2970 2971
			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
				 "%s-%s-%d", basename, "rx", rx_int_idx++);
2972
		} else if (q_vector->tx.ring) {
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2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994
			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);
	}

2995
	vsi->irqs_ready = true;
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2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020
	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++) {
3021 3022
		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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3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058
	}

	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);
	}

3059
	i40e_flush(&pf->hw);
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3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086
	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;
3087
	irqreturn_t ret = IRQ_NONE;
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3088 3089 3090 3091
	u32 icr0, icr0_remaining;
	u32 val, ena_mask;

	icr0 = rd32(hw, I40E_PFINT_ICR0);
3092
	ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
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Jesse Brandeburg 已提交
3093

3094 3095
	/* if sharing a legacy IRQ, we might get called w/o an intr pending */
	if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3096
		goto enable_intr;
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3097

S
Shannon Nelson 已提交
3098 3099 3100 3101 3102
	/* 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++;

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3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115
	/* 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))
3116
			napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
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3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140
	}

	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;
3141
		if (val == I40E_RESET_CORER) {
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Jesse Brandeburg 已提交
3142
			pf->corer_count++;
3143
		} else if (val == I40E_RESET_GLOBR) {
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Jesse Brandeburg 已提交
3144
			pf->globr_count++;
3145
		} else if (val == I40E_RESET_EMPR) {
J
Jesse Brandeburg 已提交
3146
			pf->empr_count++;
3147 3148
			set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
		}
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Jesse Brandeburg 已提交
3149 3150
	}

3151 3152 3153 3154 3155
	if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
		icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
		dev_info(&pf->pdev->dev, "HMC error interrupt\n");
	}

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Jacob Keller 已提交
3156 3157 3158 3159
	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) {
3160
			icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
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Jacob Keller 已提交
3161 3162 3163 3164
			i40e_ptp_tx_hwtstamp(pf);
		}
	}

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3165 3166 3167 3168 3169 3170 3171 3172
	/* 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);
3173
		if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
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3174
		    (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3175
		    (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3176 3177 3178
			dev_info(&pf->pdev->dev, "device will be reset\n");
			set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
			i40e_service_event_schedule(pf);
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3179 3180 3181
		}
		ena_mask &= ~icr0_remaining;
	}
3182
	ret = IRQ_HANDLED;
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3183

3184
enable_intr:
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3185 3186 3187 3188 3189 3190 3191
	/* 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);
	}

3192
	return ret;
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3193 3194
}

3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230
/**
 * 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;

3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241
		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);
		}
3242 3243 3244 3245 3246
		/* 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);
3247 3248
		if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
			kfree(tx_buf->raw_buf);
3249

3250 3251 3252
		tx_buf->raw_buf = NULL;
		tx_buf->tx_flags = 0;
		tx_buf->next_to_watch = NULL;
3253
		dma_unmap_len_set(tx_buf, len, 0);
3254 3255
		tx_desc->buffer_addr = 0;
		tx_desc->cmd_type_offset_bsz = 0;
3256

3257
		/* move us past the eop_desc for start of next FD desc */
3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299
		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;
}

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Jesse Brandeburg 已提交
3300
/**
3301
 * i40e_map_vector_to_qp - Assigns the queue pair to the vector
J
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3302 3303
 * @vsi: the VSI being configured
 * @v_idx: vector index
3304
 * @qp_idx: queue pair index
J
Jesse Brandeburg 已提交
3305
 **/
3306
static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
J
Jesse Brandeburg 已提交
3307
{
3308
	struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3309 3310
	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
3311 3312

	tx_ring->q_vector = q_vector;
3313 3314
	tx_ring->next = q_vector->tx.ring;
	q_vector->tx.ring = tx_ring;
J
Jesse Brandeburg 已提交
3315
	q_vector->tx.count++;
3316 3317 3318 3319 3320

	rx_ring->q_vector = q_vector;
	rx_ring->next = q_vector->rx.ring;
	q_vector->rx.ring = rx_ring;
	q_vector->rx.count++;
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3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335
}

/**
 * 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;
3336
	int num_ringpairs;
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Jesse Brandeburg 已提交
3337 3338 3339 3340 3341
	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.
3342 3343 3344 3345
	 * 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
3346
	 */
3347
	for (; v_start < q_vectors; v_start++) {
3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362
		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--;
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Jesse Brandeburg 已提交
3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399
		}
	}
}

/**
 * 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,
				  pf->misc_int_name, pf);
	else
		err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
				  pf->misc_int_name, pf);

	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.
 **/
3400 3401 3402
#ifdef I40E_FCOE
void i40e_netpoll(struct net_device *netdev)
#else
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Jesse Brandeburg 已提交
3403
static void i40e_netpoll(struct net_device *netdev)
3404
#endif
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Jesse Brandeburg 已提交
3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417
{
	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++)
3418
			i40e_msix_clean_rings(0, vsi->q_vectors[i]);
J
Jesse Brandeburg 已提交
3419 3420 3421 3422 3423 3424 3425
	} else {
		i40e_intr(pf->pdev->irq, netdev);
	}
	pf->flags &= ~I40E_FLAG_IN_NETPOLL;
}
#endif

3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446
/**
 * 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;

3447
		usleep_range(10, 20);
3448 3449 3450 3451 3452 3453 3454
	}
	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
		return -ETIMEDOUT;

	return 0;
}

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3455 3456 3457 3458 3459 3460 3461 3462 3463
/**
 * 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;
3464
	int i, j, pf_q, ret = 0;
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3465 3466 3467 3468
	u32 tx_reg;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3469 3470 3471 3472

		/* warn the TX unit of coming changes */
		i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
		if (!enable)
3473
			usleep_range(10, 20);
3474

3475
		for (j = 0; j < 50; j++) {
J
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3476
			tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3477 3478 3479 3480 3481
			if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
			    ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
				break;
			usleep_range(1000, 2000);
		}
3482
		/* Skip if the queue is already in the requested state */
3483
		if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3484
			continue;
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3485 3486

		/* turn on/off the queue */
3487 3488
		if (enable) {
			wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3489
			tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3490
		} else {
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3491
			tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3492
		}
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3493 3494 3495 3496

		wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);

		/* wait for the change to finish */
3497 3498 3499 3500 3501 3502 3503
		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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		}
	}

3507 3508
	if (hw->revision_id == 0)
		mdelay(50);
3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532
	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;

3533
		usleep_range(10, 20);
3534 3535 3536
	}
	if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
		return -ETIMEDOUT;
3537

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	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;
3550
	int i, j, pf_q, ret = 0;
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	u32 rx_reg;

	pf_q = vsi->base_queue;
	for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3555
		for (j = 0; j < 50; j++) {
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			rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3557 3558 3559 3560 3561
			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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3562

3563 3564 3565
		/* 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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		/* turn on/off the queue */
		if (enable)
3569
			rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
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3570
		else
3571
			rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
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		wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);

		/* wait for the change to finish */
3575 3576 3577 3578 3579 3580 3581
		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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3582 3583 3584
		}
	}

3585
	return ret;
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}

/**
 * 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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int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
J
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3594
{
3595
	int ret = 0;
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3596 3597 3598 3599 3600 3601 3602 3603

	/* 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 {
3604 3605 3606
		/* 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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	}

	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;

3628 3629 3630 3631
		if (!vsi->irqs_ready)
			return;

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

			/* free only the irqs that were actually requested */
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			if (!vsi->q_vectors[i] ||
			    !vsi->q_vectors[i]->num_ringpairs)
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3638 3639 3640 3641 3642 3643
				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,
3644
				 vsi->q_vectors[i]);
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			/* 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);
	}
}

3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738
/**
 * 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];
3739
	struct i40e_ring *ring;
3740 3741 3742 3743 3744

	if (!q_vector)
		return;

	/* disassociate q_vector from rings */
3745 3746 3747 3748 3749
	i40e_for_each_ring(ring, q_vector->tx)
		ring->q_vector = NULL;

	i40e_for_each_ring(ring, q_vector->rx)
		ring->q_vector = NULL;
3750 3751 3752 3753 3754 3755 3756 3757 3758 3759

	/* 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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/**
 * 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;

3771 3772
	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
3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803
}

/**
 * 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;
	} 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;

	i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
M
Mitch Williams 已提交
3804
	for (i = 0; i < pf->num_alloc_vsi; i++)
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3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821
		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++)
3822
		napi_enable(&vsi->q_vectors[q_idx]->napi);
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Jesse Brandeburg 已提交
3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836
}

/**
 * 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++)
3837
		napi_disable(&vsi->q_vectors[q_idx]->napi);
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Jesse Brandeburg 已提交
3838 3839
}

3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852
/**
 * 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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/**
 * 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;

	set_bit(__I40E_NEEDS_RESTART, &vsi->state);
	if (vsi->netdev && netif_running(vsi->netdev)) {
		vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
	} else {
3866
		i40e_vsi_close(vsi);
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	}
}

/**
 * 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
3883
		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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3894
	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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Mitch Williams 已提交
3908
	for (v = 0; v < pf->num_alloc_vsi; v++) {
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		if (pf->vsi[v])
			i40e_unquiesce_vsi(pf->vsi[v]);
	}
}

/**
 * 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;

	/* MFP mode return count of enabled TCs for this PF */
	if (pf->flags & I40E_FLAG_MFP_ENABLED) {
		enabled_tc = pf->hw.func_caps.enabled_tcmap;
		for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
			if (enabled_tc & (1 << i))
				num_tc++;
		}
		return num_tc;
	}

	/* SFP mode will be enabled for all TCs on port */
	return i40e_dcb_get_num_tc(dcbcfg);
}

/**
 * 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);

	/* MFP mode will have enabled TCs set by FW */
	if (pf->flags & I40E_FLAG_MFP_ENABLED)
		return pf->hw.func_caps.enabled_tcmap;

	/* SFP mode we want PF to be enabled for all TCs */
	return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
}

/**
 * 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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4047 4048 4049 4050
	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
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		dev_info(&pf->pdev->dev,
			 "couldn't get pf vsi bw config, err %d, aq_err %d\n",
J
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4055 4056
			 aq_ret, pf->hw.aq.asq_last_status);
		return -EINVAL;
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4057 4058 4059
	}

	/* Get the VSI level BW configuration per TC */
J
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4060
	aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
J
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4061
						  NULL);
J
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4062
	if (aq_ret) {
J
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4063 4064
		dev_info(&pf->pdev->dev,
			 "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
J
Jesse Brandeburg 已提交
4065 4066
			 aq_ret, pf->hw.aq.asq_last_status);
		return -EINVAL;
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4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087
	}

	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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4089
	return 0;
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}

/**
 * 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
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4101 4102 4103
				       u8 *bw_share)
{
	struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
J
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4104 4105
	i40e_status aq_ret;
	int i;
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4106 4107 4108 4109 4110

	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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	aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
					  NULL);
	if (aq_ret) {
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		dev_info(&vsi->back->pdev->dev,
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			 "AQ command Config VSI BW allocation per TC failed = %d\n",
			 vsi->back->hw.aq.asq_last_status);
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		return -EINVAL;
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4118 4119 4120 4121 4122
	}

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

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4123
	return 0;
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}

/**
 * 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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/**
 * 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 */
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	for (v = 0; v < pf->num_alloc_vsi; v++) {
N
Neerav Parikh 已提交
4350 4351 4352 4353
		if (!pf->vsi[v])
			continue;

		/* - Enable all TCs for the LAN VSI
4354 4355 4356 4357
#ifdef I40E_FCOE
		 * - For FCoE VSI only enable the TC configured
		 *   as per the APP TLV
#endif
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4358 4359 4360 4361 4362 4363
		 * - 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);
4364 4365 4366 4367
#ifdef I40E_FCOE
		if (pf->vsi[v]->type == I40E_VSI_FCOE)
			tc_map = i40e_get_fcoe_tc_map(pf);
#endif /* #ifdef I40E_FCOE */
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4368 4369 4370 4371 4372 4373 4374 4375

		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 {
4376 4377
			/* Re-configure VSI vectors based on updated TC map */
			i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
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4378 4379 4380 4381 4382 4383
			if (pf->vsi[v]->netdev)
				i40e_dcbnl_set_all(pf->vsi[v]);
		}
	}
}

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
/**
 * 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;
}

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/**
 * 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;

	if (pf->hw.func_caps.npar_enable)
		goto out;

	/* 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;
4440 4441 4442 4443 4444

			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;
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		}
4446 4447 4448
	} else {
		dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
			 pf->hw.aq.asq_last_status);
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4449 4450 4451 4452 4453 4454
	}

out:
	return err;
}
#endif /* CONFIG_I40E_DCB */
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#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;
	}

	switch (vsi->back->hw.phy.link_info.link_speed) {
	case I40E_LINK_SPEED_40GB:
4473
		strlcpy(speed, "40 Gbps", SPEED_SIZE);
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		break;
	case I40E_LINK_SPEED_10GB:
4476
		strlcpy(speed, "10 Gbps", SPEED_SIZE);
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4477 4478
		break;
	case I40E_LINK_SPEED_1GB:
4479
		strlcpy(speed, "1000 Mbps", SPEED_SIZE);
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4480
		break;
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4481 4482 4483
	case I40E_LINK_SPEED_100MB:
		strncpy(speed, "100 Mbps", SPEED_SIZE);
		break;
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	default:
		break;
	}

	switch (vsi->back->hw.fc.current_mode) {
	case I40E_FC_FULL:
4490
		strlcpy(fc, "RX/TX", FC_SIZE);
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4491 4492
		break;
	case I40E_FC_TX_PAUSE:
4493
		strlcpy(fc, "TX", FC_SIZE);
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4494 4495
		break;
	case I40E_FC_RX_PAUSE:
4496
		strlcpy(fc, "RX", FC_SIZE);
J
Jesse Brandeburg 已提交
4497 4498
		break;
	default:
4499
		strlcpy(fc, "None", FC_SIZE);
J
Jesse Brandeburg 已提交
4500 4501 4502 4503 4504 4505
		break;
	}

	netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
		    speed, fc);
}
N
Neerav Parikh 已提交
4506

J
Jesse Brandeburg 已提交
4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531
/**
 * 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
4532
		i40e_print_link_message(vsi, true);
J
Jesse Brandeburg 已提交
4533 4534
		netif_tx_start_all_queues(vsi->netdev);
		netif_carrier_on(vsi->netdev);
A
Anjali Singhai 已提交
4535
	} else if (vsi->netdev) {
J
Jesse Brandeburg 已提交
4536
		i40e_print_link_message(vsi, false);
4537 4538 4539 4540 4541 4542 4543
		/* 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
4544
	}
4545 4546

	/* replay FDIR SB filters */
4547 4548 4549 4550 4551 4552 4553 4554
	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;
		}
4555
		i40e_fdir_filter_restore(vsi);
4556
	}
J
Jesse Brandeburg 已提交
4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622
	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++) {
4623 4624
		i40e_clean_tx_ring(vsi->tx_rings[i]);
		i40e_clean_rx_ring(vsi->rx_rings[i]);
J
Jesse Brandeburg 已提交
4625 4626 4627 4628 4629 4630 4631 4632
	}
}

/**
 * i40e_setup_tc - configure multiple traffic classes
 * @netdev: net device to configure
 * @tc: number of traffic classes to enable
 **/
4633 4634 4635
#ifdef I40E_FCOE
int i40e_setup_tc(struct net_device *netdev, u8 tc)
#else
J
Jesse Brandeburg 已提交
4636
static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4637
#endif
J
Jesse Brandeburg 已提交
4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701
{
	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
 **/
4702 4703 4704
#ifdef I40E_FCOE
int i40e_open(struct net_device *netdev)
#else
J
Jesse Brandeburg 已提交
4705
static int i40e_open(struct net_device *netdev)
4706
#endif
J
Jesse Brandeburg 已提交
4707 4708 4709 4710 4711 4712
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;
	struct i40e_pf *pf = vsi->back;
	int err;

4713 4714 4715
	/* 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
4716 4717 4718 4719
		return -EBUSY;

	netif_carrier_off(netdev);

4720 4721 4722 4723
	err = i40e_vsi_open(vsi);
	if (err)
		return err;

4724 4725 4726 4727 4728 4729 4730 4731
	/* 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);

4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752
#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;
	char int_name[IFNAMSIZ];
	int err;

J
Jesse Brandeburg 已提交
4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764
	/* 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;

4765 4766 4767 4768 4769 4770
	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
4771

4772 4773 4774 4775 4776
		/* 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;
4777

4778 4779 4780 4781
		err = netif_set_real_num_rx_queues(vsi->netdev,
						   vsi->num_queue_pairs);
		if (err)
			goto err_set_queues;
4782 4783 4784 4785 4786

	} else if (vsi->type == I40E_VSI_FDIR) {
		snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
			 dev_driver_string(&pf->pdev->dev));
		err = i40e_vsi_request_irq(vsi, int_name);
4787
	} else {
4788
		err = -EINVAL;
4789 4790
		goto err_setup_rx;
	}
4791

J
Jesse Brandeburg 已提交
4792 4793 4794 4795 4796 4797 4798 4799
	err = i40e_up_complete(vsi);
	if (err)
		goto err_up_complete;

	return 0;

err_up_complete:
	i40e_down(vsi);
4800
err_set_queues:
J
Jesse Brandeburg 已提交
4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811
	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;
}

4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831
/**
 * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
 * @pf: Pointer to pf
 *
 * 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
4832 4833 4834 4835 4836 4837 4838 4839 4840 4841
/**
 * 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
 **/
4842 4843 4844
#ifdef I40E_FCOE
int i40e_close(struct net_device *netdev)
#else
J
Jesse Brandeburg 已提交
4845
static int i40e_close(struct net_device *netdev)
4846
#endif
J
Jesse Brandeburg 已提交
4847 4848 4849 4850
{
	struct i40e_netdev_priv *np = netdev_priv(netdev);
	struct i40e_vsi *vsi = np->vsi;

4851
	i40e_vsi_close(vsi);
J
Jesse Brandeburg 已提交
4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870

	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());

4871 4872 4873
	if (i40e_check_asq_alive(&pf->hw))
		i40e_vc_notify_reset(pf);

J
Jesse Brandeburg 已提交
4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884
	/* 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
4885
		dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
J
Jesse Brandeburg 已提交
4886 4887 4888 4889 4890 4891 4892 4893 4894 4895
		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
4896
		dev_dbg(&pf->pdev->dev, "CoreR requested\n");
J
Jesse Brandeburg 已提交
4897 4898 4899 4900 4901
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_CORER_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
		i40e_flush(&pf->hw);

4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919
	} else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {

		/* Request a Firmware Reset
		 *
		 * Same as Global reset, plus restarting the
		 * embedded firmware engine.
		 */
		/* enable EMP Reset */
		val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
		val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
		wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);

		/* force the reset */
		val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
		val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
		wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
		i40e_flush(&pf->hw);

J
Jesse Brandeburg 已提交
4920 4921 4922 4923 4924 4925 4926 4927 4928 4929
	} 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
4930
		dev_dbg(&pf->pdev->dev, "PFR requested\n");
J
Jesse Brandeburg 已提交
4931 4932 4933 4934 4935 4936 4937 4938
		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
4939
		for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
4940 4941 4942 4943 4944 4945 4946 4947
			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);
			}
		}

4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964
		/* 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
4965 4966 4967 4968 4969 4970 4971 4972 4973
		/* 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
4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995
#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
4996
			dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
N
Neerav Parikh 已提交
4997 4998 4999 5000 5001
		}

		if (memcmp(&new_cfg->etscfg.tcbwtable,
			   &old_cfg->etscfg.tcbwtable,
			   sizeof(new_cfg->etscfg.tcbwtable)))
J
Jesse Brandeburg 已提交
5002
			dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
N
Neerav Parikh 已提交
5003 5004 5005 5006

		if (memcmp(&new_cfg->etscfg.tsatable,
			   &old_cfg->etscfg.tsatable,
			   sizeof(new_cfg->etscfg.tsatable)))
J
Jesse Brandeburg 已提交
5007
			dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
N
Neerav Parikh 已提交
5008 5009 5010 5011 5012 5013 5014
	}

	/* 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
5015
		dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
N
Neerav Parikh 已提交
5016 5017 5018 5019 5020
	}

	/* Check if APP Table has changed */
	if (memcmp(&new_cfg->app,
		   &old_cfg->app,
5021
		   sizeof(new_cfg->app))) {
N
Neerav Parikh 已提交
5022
		need_reconfig = true;
J
Jesse Brandeburg 已提交
5023
		dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5024
	}
N
Neerav Parikh 已提交
5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045

	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 *dcbx_cfg = &hw->local_dcbx_config;
	struct i40e_dcbx_config tmp_dcbx_cfg;
	bool need_reconfig = false;
	int ret = 0;
	u8 type;

5046 5047 5048 5049
	/* Not DCB capable or capability disabled */
	if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
		return ret;

N
Neerav Parikh 已提交
5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076
	/* Ignore if event is not for Nearest Bridge */
	type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
		& I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
	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;
	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;
	}

	/* Convert/store the DCBX data from LLDPDU temporarily */
	memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
	ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
	if (ret) {
		/* Error in LLDPDU parsing return */
		dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
		goto exit;
	}

	/* No change detected in DCBX configs */
	if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
J
Jesse Brandeburg 已提交
5077
		dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
N
Neerav Parikh 已提交
5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090
		goto exit;
	}

	need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);

	i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);

	/* Overwrite the new configuration */
	*dcbx_cfg = tmp_dcbx_cfg;

	if (!need_reconfig)
		goto exit;

5091 5092 5093 5094 5095 5096
	/* Enable DCB tagging only when more than one TC */
	if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
		pf->flags |= I40E_FLAG_DCB_ENABLED;
	else
		pf->flags &= ~I40E_FLAG_DCB_ENABLED;

N
Neerav Parikh 已提交
5097 5098 5099 5100 5101 5102
	/* Reconfiguration needed quiesce all VSIs */
	i40e_pf_quiesce_all_vsi(pf);

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

5103 5104 5105 5106 5107
	ret = i40e_resume_port_tx(pf);

	/* In case of error no point in resuming VSIs */
	if (!ret)
		i40e_pf_unquiesce_all_vsi(pf);
N
Neerav Parikh 已提交
5108 5109 5110 5111 5112
exit:
	return ret;
}
#endif /* CONFIG_I40E_DCB */

5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125
/**
 * 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
5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144
/**
 * 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
5145 5146
	dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
		queue, qtx_ctl);
J
Jesse Brandeburg 已提交
5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170

	/* 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 */
5171
	smp_mb__before_atomic();
J
Jesse Brandeburg 已提交
5172 5173 5174
	clear_bit(__I40E_SERVICE_SCHED, &pf->state);
}

5175
/**
5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189
 * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
 * @pf: board private structure
 **/
int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
{
	int val, fcnt_prog;

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

/**
 * i40e_get_current_fd_count - Get the count of total FD filters programmed
5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200
 * @pf: board private structure
 **/
int i40e_get_current_fd_count(struct i40e_pf *pf)
{
	int val, fcnt_prog;
	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;
}
5201

5202 5203 5204 5205 5206 5207 5208 5209
/**
 * 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;

5210 5211 5212
	if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
		return;

5213 5214 5215
	/* Check if, FD SB or ATR was auto disabled and if there is enough room
	 * to re-enable
	 */
5216 5217
	fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
	fcnt_avail = pf->fdir_pf_filter_count;
5218 5219 5220
	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)) {
5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236
		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");
		}
	}
}

5237 5238 5239 5240 5241 5242 5243 5244 5245 5246
#define I40E_MIN_FD_FLUSH_INTERVAL 10
/**
 * 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)
{
	int flush_wait_retry = 50;
	int reg;

5247 5248 5249
	if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
		return;

5250 5251 5252 5253 5254 5255 5256 5257 5258 5259
	if (time_after(jiffies, pf->fd_flush_timestamp +
				(I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
		set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
		pf->fd_flush_timestamp = jiffies;
		pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
		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);
5260
		pf->fd_flush_cnt++;
5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299
		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]);

			pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
			pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
			pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
			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
 **/
int i40e_get_current_atr_cnt(struct i40e_pf *pf)
{
	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
5300 5301 5302 5303 5304 5305 5306 5307 5308 5309
/**
 * 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;
5310

5311 5312 5313
	if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
		return;

5314 5315 5316 5317 5318
	if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
	    (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
	    (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
		i40e_fdir_flush_and_replay(pf);

5319 5320
	i40e_fdir_check_and_reenable(pf);

J
Jesse Brandeburg 已提交
5321 5322 5323 5324 5325 5326 5327 5328 5329
}

/**
 * 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)
{
5330
	if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
J
Jesse Brandeburg 已提交
5331 5332 5333 5334
		return;

	switch (vsi->type) {
	case I40E_VSI_MAIN:
5335 5336 5337
#ifdef I40E_FCOE
	case I40E_VSI_FCOE:
#endif
J
Jesse Brandeburg 已提交
5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381
		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:
		break;

	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
5382
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393
		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
5394
	struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
J
Jesse Brandeburg 已提交
5395

5396 5397 5398
	/* 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
5399
	old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5400
	new_link = i40e_get_link_status(&pf->hw);
J
Jesse Brandeburg 已提交
5401

5402
	if (new_link == old_link &&
M
Mitch Williams 已提交
5403 5404
	    (test_bit(__I40E_DOWN, &vsi->state) ||
	     new_link == netif_carrier_ok(vsi->netdev)))
J
Jesse Brandeburg 已提交
5405
		return;
M
Mitch Williams 已提交
5406 5407 5408

	if (!test_bit(__I40E_DOWN, &vsi->state))
		i40e_print_link_message(vsi, new_link);
J
Jesse Brandeburg 已提交
5409 5410 5411 5412 5413 5414 5415

	/* 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
5416
		i40e_vsi_link_event(vsi, new_link);
J
Jesse Brandeburg 已提交
5417 5418 5419

	if (pf->vf)
		i40e_vc_notify_link_state(pf);
J
Jacob Keller 已提交
5420 5421 5422

	if (pf->flags & I40E_FLAG_PTP)
		i40e_ptp_set_increment(pf);
J
Jesse Brandeburg 已提交
5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445
}

/**
 * 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 */
	if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
		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
5446
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
5447 5448 5449 5450 5451 5452 5453 5454 5455
		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++) {
5456
			set_check_for_tx_hang(vsi->tx_rings[i]);
J
Jesse Brandeburg 已提交
5457
			if (test_bit(__I40E_HANG_CHECK_ARMED,
5458
				     &vsi->tx_rings[i]->state))
J
Jesse Brandeburg 已提交
5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480
				armed++;
		}

		if (armed) {
			if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
				wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
				     (I40E_PFINT_DYN_CTL0_INTENA_MASK |
				      I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
			} else {
				u16 vec = vsi->base_vector - 1;
				u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
					   I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
				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);
		}
	}
}

/**
5481
 * i40e_watchdog_subtask - periodic checks not using event driven response
J
Jesse Brandeburg 已提交
5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492
 * @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;

5493 5494 5495 5496 5497 5498 5499 5500 5501
	/* 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
5502 5503 5504
	/* 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
5505
	for (i = 0; i < pf->num_alloc_vsi; i++)
J
Jesse Brandeburg 已提交
5506 5507 5508 5509 5510 5511 5512
		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
5513 5514

	i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
J
Jesse Brandeburg 已提交
5515 5516 5517 5518 5519 5520 5521 5522 5523 5524
}

/**
 * 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;

5525
	rtnl_lock();
J
Jesse Brandeburg 已提交
5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541
	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);
	}
5542 5543 5544 5545
	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
5546 5547 5548 5549 5550 5551

	/* 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);
5552
		goto unlock;
J
Jesse Brandeburg 已提交
5553 5554 5555 5556 5557 5558 5559
	}

	/* 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);
5560 5561 5562

unlock:
	rtnl_unlock();
J
Jesse Brandeburg 已提交
5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581
}

/**
 * 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));

5582 5583 5584 5585 5586 5587 5588 5589
	/* 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);

5590 5591 5592 5593 5594 5595
	/* 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
5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608
}

/**
 * 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;
5609
	u32 oldval;
J
Jesse Brandeburg 已提交
5610 5611
	u32 val;

5612 5613 5614 5615
	/* Do not run clean AQ when PF reset fails */
	if (test_bit(__I40E_RESET_FAILED, &pf->state))
		return;

5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650
	/* 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
5651
	event.msg_size = I40E_MAX_AQ_BUF_SIZE;
J
Jesse Brandeburg 已提交
5652 5653 5654 5655 5656
	event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
	if (!event.msg_buf)
		return;

	do {
5657
		event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
J
Jesse Brandeburg 已提交
5658
		ret = i40e_clean_arq_element(hw, &event, &pending);
M
Mitch Williams 已提交
5659
		if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
J
Jesse Brandeburg 已提交
5660
			break;
M
Mitch Williams 已提交
5661
		else if (ret) {
J
Jesse Brandeburg 已提交
5662 5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 5675 5676 5677 5678 5679 5680
			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,
					event.msg_size);
			break;
		case i40e_aqc_opc_lldp_update_mib:
J
Jesse Brandeburg 已提交
5681
			dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
N
Neerav Parikh 已提交
5682 5683 5684 5685 5686
#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
5687 5688
			break;
		case i40e_aqc_opc_event_lan_overflow:
J
Jesse Brandeburg 已提交
5689
			dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
J
Jesse Brandeburg 已提交
5690 5691
			i40e_handle_lan_overflow_event(pf, &event);
			break;
5692 5693 5694
		case i40e_aqc_opc_send_msg_to_peer:
			dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
			break;
J
Jesse Brandeburg 已提交
5695 5696
		default:
			dev_info(&pf->pdev->dev,
5697 5698
				 "ARQ Error: Unknown event 0x%04x received\n",
				 opcode);
J
Jesse Brandeburg 已提交
5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 5712
			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);
}

5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737
/**
 * 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);
	}
}

J
Jesse Brandeburg 已提交
5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754
/**
 * 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
5755
	for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
J
Jesse Brandeburg 已提交
5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784
		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;

	/* create the remaining VSIs attached to this VEB */
M
Mitch Williams 已提交
5785
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 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
		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);

5853 5854 5855 5856 5857 5858
	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
5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869
	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);

5870 5871 5872 5873 5874 5875 5876 5877 5878
#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
5879 5880 5881
	return 0;
}

5882 5883
static int i40e_vsi_clear(struct i40e_vsi *vsi);

J
Jesse Brandeburg 已提交
5884
/**
5885
 * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
J
Jesse Brandeburg 已提交
5886 5887
 * @pf: board private structure
 **/
5888
static void i40e_fdir_sb_setup(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
5889 5890
{
	struct i40e_vsi *vsi;
5891
	int i;
J
Jesse Brandeburg 已提交
5892

5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906
	/* 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]);
	}

5907
	if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
J
Jesse Brandeburg 已提交
5908 5909
		return;

5910
	/* find existing VSI and see if it needs configuring */
J
Jesse Brandeburg 已提交
5911
	vsi = NULL;
M
Mitch Williams 已提交
5912
	for (i = 0; i < pf->num_alloc_vsi; i++) {
5913
		if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
J
Jesse Brandeburg 已提交
5914
			vsi = pf->vsi[i];
5915 5916 5917 5918 5919
			break;
		}
	}

	/* create a new VSI if none exists */
J
Jesse Brandeburg 已提交
5920
	if (!vsi) {
5921 5922
		vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
				     pf->vsi[pf->lan_vsi]->seid, 0);
J
Jesse Brandeburg 已提交
5923 5924
		if (!vsi) {
			dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5925 5926
			pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
			return;
J
Jesse Brandeburg 已提交
5927
		}
5928
	}
J
Jesse Brandeburg 已提交
5929

5930
	i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
J
Jesse Brandeburg 已提交
5931 5932 5933 5934 5935 5936 5937 5938 5939 5940
}

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

5941
	i40e_fdir_filter_exit(pf);
M
Mitch Williams 已提交
5942
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
5943 5944 5945 5946 5947 5948 5949 5950
		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
5951
 * i40e_prep_for_reset - prep for the core to reset
J
Jesse Brandeburg 已提交
5952 5953
 * @pf: board private structure
 *
A
Anjali Singhai Jain 已提交
5954 5955
 * Close up the VFs and other things in prep for pf Reset.
  **/
S
Shannon Nelson 已提交
5956
static void i40e_prep_for_reset(struct i40e_pf *pf)
J
Jesse Brandeburg 已提交
5957 5958
{
	struct i40e_hw *hw = &pf->hw;
5959
	i40e_status ret = 0;
J
Jesse Brandeburg 已提交
5960 5961 5962 5963
	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
5964
		return;
J
Jesse Brandeburg 已提交
5965

J
Jesse Brandeburg 已提交
5966
	dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
J
Jesse Brandeburg 已提交
5967 5968 5969 5970

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

M
Mitch Williams 已提交
5971
	for (v = 0; v < pf->num_alloc_vsi; v++) {
J
Jesse Brandeburg 已提交
5972 5973 5974 5975 5976 5977
		if (pf->vsi[v])
			pf->vsi[v]->seid = 0;
	}

	i40e_shutdown_adminq(&pf->hw);

A
Anjali Singhai Jain 已提交
5978
	/* call shutdown HMC */
5979 5980
	if (hw->hmc.hmc_obj) {
		ret = i40e_shutdown_lan_hmc(hw);
S
Shannon Nelson 已提交
5981
		if (ret)
5982 5983
			dev_warn(&pf->pdev->dev,
				 "shutdown_lan_hmc failed: %d\n", ret);
A
Anjali Singhai Jain 已提交
5984 5985 5986
	}
}

J
Jesse Brandeburg 已提交
5987 5988 5989 5990 5991 5992 5993 5994 5995 5996 5997 5998
/**
 * 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;
5999
	strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
J
Jesse Brandeburg 已提交
6000 6001 6002
	i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
}

A
Anjali Singhai Jain 已提交
6003
/**
J
Jesse Brandeburg 已提交
6004
 * i40e_reset_and_rebuild - reset and rebuild using a saved config
A
Anjali Singhai Jain 已提交
6005
 * @pf: board private structure
6006
 * @reinit: if the Main VSI needs to re-initialized.
A
Anjali Singhai Jain 已提交
6007
 **/
6008
static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
A
Anjali Singhai Jain 已提交
6009 6010
{
	struct i40e_hw *hw = &pf->hw;
6011
	u8 set_fc_aq_fail = 0;
A
Anjali Singhai Jain 已提交
6012 6013 6014
	i40e_status ret;
	u32 v;

J
Jesse Brandeburg 已提交
6015 6016 6017 6018 6019
	/* 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);
6020
	if (ret) {
J
Jesse Brandeburg 已提交
6021
		dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6022 6023
		set_bit(__I40E_RESET_FAILED, &pf->state);
		goto clear_recovery;
6024
	}
J
Jesse Brandeburg 已提交
6025 6026 6027
	pf->pfr_count++;

	if (test_bit(__I40E_DOWN, &pf->state))
6028
		goto clear_recovery;
J
Jesse Brandeburg 已提交
6029
	dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
J
Jesse Brandeburg 已提交
6030 6031 6032 6033 6034

	/* 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);
6035
		goto clear_recovery;
J
Jesse Brandeburg 已提交
6036 6037
	}

6038 6039 6040 6041 6042 6043
	/* re-verify the eeprom if we just had an EMP reset */
	if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
		clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
		i40e_verify_eeprom(pf);
	}

6044
	i40e_clear_pxe_mode(hw);
J
Jesse Brandeburg 已提交
6045 6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059 6060 6061 6062 6063 6064
	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
6065 6066 6067 6068 6069 6070 6071
#ifdef CONFIG_I40E_DCB
	ret = i40e_init_pf_dcb(pf);
	if (ret) {
		dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
		goto end_core_reset;
	}
#endif /* CONFIG_I40E_DCB */
6072 6073 6074 6075
#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
6076

6077
#endif
J
Jesse Brandeburg 已提交
6078
	/* do basic switch setup */
6079
	ret = i40e_setup_pf_switch(pf, reinit);
J
Jesse Brandeburg 已提交
6080 6081 6082
	if (ret)
		goto end_core_reset;

J
Jesse Brandeburg 已提交
6083 6084 6085 6086 6087 6088 6089 6090 6091
	/* 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);

6092 6093 6094 6095 6096
	/* 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
6097 6098 6099 6100 6101 6102 6103 6104
	/* 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
6105
		dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
J
Jesse Brandeburg 已提交
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
		/* 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
6141
		dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
J
Jesse Brandeburg 已提交
6142 6143 6144 6145 6146 6147 6148 6149 6150
		/* 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;
		}
	}

6151 6152 6153 6154 6155 6156 6157
	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);
	}

J
Jesse Brandeburg 已提交
6158 6159 6160 6161 6162 6163 6164
	/* 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
6165 6166 6167 6168 6169
	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
6170
	/* tell the firmware that we're starting */
J
Jesse Brandeburg 已提交
6171
	i40e_send_version(pf);
J
Jesse Brandeburg 已提交
6172 6173

end_core_reset:
6174 6175
	clear_bit(__I40E_RESET_FAILED, &pf->state);
clear_recovery:
J
Jesse Brandeburg 已提交
6176 6177 6178
	clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
}

A
Anjali Singhai Jain 已提交
6179 6180 6181 6182 6183 6184 6185 6186 6187
/**
 * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
 * @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
6188 6189
	i40e_prep_for_reset(pf);
	i40e_reset_and_rebuild(pf, false);
A
Anjali Singhai Jain 已提交
6190 6191
}

J
Jesse Brandeburg 已提交
6192 6193 6194 6195 6196 6197 6198 6199 6200 6201
/**
 * i40e_handle_mdd_event
 * @pf: pointer to the pf structure
 *
 * 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;
6202
	bool pf_mdd_detected = false;
J
Jesse Brandeburg 已提交
6203 6204 6205 6206 6207 6208 6209 6210 6211 6212
	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) {
6213 6214
		u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
				I40E_GL_MDET_TX_PF_NUM_SHIFT;
6215
		u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6216
				I40E_GL_MDET_TX_VF_NUM_SHIFT;
6217
		u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6218
				I40E_GL_MDET_TX_EVENT_SHIFT;
6219 6220 6221
		u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
				I40E_GL_MDET_TX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
6222 6223 6224
		if (netif_msg_tx_err(pf))
			dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
				 event, queue, pf_num, vf_num);
J
Jesse Brandeburg 已提交
6225 6226 6227 6228 6229
		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) {
6230 6231
		u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
				I40E_GL_MDET_RX_FUNCTION_SHIFT;
6232
		u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6233
				I40E_GL_MDET_RX_EVENT_SHIFT;
6234 6235 6236
		u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
				I40E_GL_MDET_RX_QUEUE_SHIFT) -
				pf->hw.func_caps.base_queue;
6237 6238 6239
		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
6240 6241 6242 6243
		wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
		mdd_detected = true;
	}

6244 6245 6246 6247
	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);
6248
			dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6249 6250 6251 6252 6253
			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);
6254
			dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6255 6256 6257 6258 6259 6260 6261 6262 6263
			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
6264 6265 6266 6267 6268 6269 6270
	/* 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++;
6271 6272
			dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
				 i);
J
Jesse Brandeburg 已提交
6273 6274 6275 6276 6277 6278
		}

		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++;
6279 6280
			dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
				 i);
J
Jesse Brandeburg 已提交
6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299
		}

		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);
}

6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337 6338 6339 6340 6341 6342 6343
#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
6344 6345 6346 6347 6348 6349 6350 6351 6352 6353 6354
/**
 * 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;

6355 6356 6357 6358 6359 6360
	/* 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
6361 6362 6363 6364 6365 6366
	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);
6367 6368 6369
#ifdef CONFIG_I40E_VXLAN
	i40e_sync_vxlan_filters_subtask(pf);
#endif
J
Jesse Brandeburg 已提交
6370 6371 6372 6373 6374 6375 6376 6377 6378 6379 6380 6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 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
	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;

6438 6439 6440 6441 6442 6443 6444 6445 6446
#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
6447 6448 6449 6450 6451 6452 6453 6454
	default:
		WARN_ON(1);
		return -ENODATA;
	}

	return 0;
}

A
Anjali Singhai Jain 已提交
6455 6456 6457
/**
 * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
 * @type: VSI pointer
6458
 * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
A
Anjali Singhai Jain 已提交
6459 6460 6461 6462
 *
 * On error: returns error code (negative)
 * On success: returns 0
 **/
6463
static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
A
Anjali Singhai Jain 已提交
6464 6465 6466 6467
{
	int size;
	int ret = 0;

6468
	/* allocate memory for both Tx and Rx ring pointers */
A
Anjali Singhai Jain 已提交
6469 6470 6471 6472 6473 6474
	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];

6475 6476
	if (alloc_qvectors) {
		/* allocate memory for q_vector pointers */
6477
		size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6478 6479 6480 6481 6482
		vsi->q_vectors = kzalloc(size, GFP_KERNEL);
		if (!vsi->q_vectors) {
			ret = -ENOMEM;
			goto err_vectors;
		}
A
Anjali Singhai Jain 已提交
6483 6484 6485 6486 6487 6488 6489 6490
	}
	return ret;

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

J
Jesse Brandeburg 已提交
6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515
/**
 * 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
6516
	while (i < pf->num_alloc_vsi && pf->vsi[i])
J
Jesse Brandeburg 已提交
6517
		i++;
M
Mitch Williams 已提交
6518
	if (i >= pf->num_alloc_vsi) {
J
Jesse Brandeburg 已提交
6519 6520 6521 6522 6523
		i = 0;
		while (i < pf->next_vsi && pf->vsi[i])
			i++;
	}

M
Mitch Williams 已提交
6524
	if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
J
Jesse Brandeburg 已提交
6525 6526 6527
		vsi_idx = i;             /* Found one! */
	} else {
		ret = -ENODEV;
6528
		goto unlock_pf;  /* out of VSI slots! */
J
Jesse Brandeburg 已提交
6529 6530 6531 6532 6533 6534
	}
	pf->next_vsi = ++i;

	vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
	if (!vsi) {
		ret = -ENOMEM;
6535
		goto unlock_pf;
J
Jesse Brandeburg 已提交
6536 6537 6538 6539 6540 6541 6542 6543 6544 6545 6546
	}
	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;
	vsi->netdev_registered = false;
	vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
	INIT_LIST_HEAD(&vsi->mac_filter_list);
6547
	vsi->irqs_ready = false;
J
Jesse Brandeburg 已提交
6548

6549 6550 6551 6552
	ret = i40e_set_num_rings_in_vsi(vsi);
	if (ret)
		goto err_rings;

6553
	ret = i40e_vsi_alloc_arrays(vsi, true);
A
Anjali Singhai Jain 已提交
6554
	if (ret)
6555
		goto err_rings;
6556

J
Jesse Brandeburg 已提交
6557 6558 6559 6560 6561
	/* Setup default MSIX irq handler for VSI */
	i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);

	pf->vsi[vsi_idx] = vsi;
	ret = vsi_idx;
6562 6563
	goto unlock_pf;

6564
err_rings:
6565 6566 6567
	pf->next_vsi = i - 1;
	kfree(vsi);
unlock_pf:
J
Jesse Brandeburg 已提交
6568 6569 6570 6571
	mutex_unlock(&pf->switch_mutex);
	return ret;
}

A
Anjali Singhai Jain 已提交
6572 6573 6574
/**
 * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
 * @type: VSI pointer
6575
 * @free_qvectors: a bool to specify if q_vectors need to be freed.
A
Anjali Singhai Jain 已提交
6576 6577 6578 6579
 *
 * On error: returns error code (negative)
 * On success: returns 0
 **/
6580
static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
A
Anjali Singhai Jain 已提交
6581 6582
{
	/* free the ring and vector containers */
6583 6584 6585 6586
	if (free_qvectors) {
		kfree(vsi->q_vectors);
		vsi->q_vectors = NULL;
	}
A
Anjali Singhai Jain 已提交
6587 6588 6589 6590 6591
	kfree(vsi->tx_rings);
	vsi->tx_rings = NULL;
	vsi->rx_rings = NULL;
}

J
Jesse Brandeburg 已提交
6592 6593 6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605 6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617 6618 6619 6620 6621 6622 6623 6624 6625 6626 6627
/**
 * 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;
	}

	/* updates the pf for this cleared vsi */
	i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
	i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);

6628
	i40e_vsi_free_arrays(vsi, true);
6629

J
Jesse Brandeburg 已提交
6630 6631 6632 6633 6634 6635 6636 6637 6638 6639 6640 6641
	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;
}

6642 6643 6644 6645
/**
 * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
 * @vsi: the VSI being cleaned
 **/
6646
static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6647 6648 6649
{
	int i;

6650
	if (vsi->tx_rings && vsi->tx_rings[0]) {
N
Neerav Parikh 已提交
6651
		for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6652 6653 6654 6655
			kfree_rcu(vsi->tx_rings[i], rcu);
			vsi->tx_rings[i] = NULL;
			vsi->rx_rings[i] = NULL;
		}
6656
	}
6657 6658
}

J
Jesse Brandeburg 已提交
6659 6660 6661 6662 6663 6664
/**
 * 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)
{
6665
	struct i40e_ring *tx_ring, *rx_ring;
J
Jesse Brandeburg 已提交
6666 6667 6668 6669
	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
6670
	for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6671
		/* allocate space for both Tx and Rx in one shot */
6672 6673 6674
		tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
		if (!tx_ring)
			goto err_out;
J
Jesse Brandeburg 已提交
6675 6676 6677 6678 6679 6680 6681 6682 6683 6684

		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;
6685
		vsi->tx_rings[i] = tx_ring;
J
Jesse Brandeburg 已提交
6686

6687
		rx_ring = &tx_ring[1];
J
Jesse Brandeburg 已提交
6688 6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700
		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);
6701
		vsi->rx_rings[i] = rx_ring;
J
Jesse Brandeburg 已提交
6702 6703 6704
	}

	return 0;
6705 6706 6707 6708

err_out:
	i40e_vsi_clear_rings(vsi);
	return -ENOMEM;
J
Jesse Brandeburg 已提交
6709 6710 6711 6712 6713 6714 6715 6716 6717 6718 6719
}

/**
 * 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)
{
6720 6721 6722
	vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
					I40E_MIN_MSIX, vectors);
	if (vectors < 0) {
J
Jesse Brandeburg 已提交
6723
		dev_info(&pf->pdev->dev,
6724
			 "MSI-X vector reservation failed: %d\n", vectors);
J
Jesse Brandeburg 已提交
6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742
		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.
 *
 * Returns 0 on success, negative on failure
 **/
static int i40e_init_msix(struct i40e_pf *pf)
{
	i40e_status err = 0;
	struct i40e_hw *hw = &pf->hw;
6743
	int other_vecs = 0;
J
Jesse Brandeburg 已提交
6744 6745 6746 6747 6748 6749 6750 6751 6752
	int v_budget, i;
	int vec;

	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
6753 6754 6755 6756 6757
	 *	- 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
6758
	 *   - The number of VMDq pairs
6759 6760 6761
#ifdef I40E_FCOE
	 *   - The number of FCOE qps.
#endif
J
Jesse Brandeburg 已提交
6762 6763 6764 6765 6766
	 * 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.
	 */
6767
	pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
J
Jesse Brandeburg 已提交
6768
	pf->num_vmdq_msix = pf->num_vmdq_qps;
6769 6770
	other_vecs = 1;
	other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
J
Jesse Brandeburg 已提交
6771
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6772
		other_vecs++;
J
Jesse Brandeburg 已提交
6773

6774 6775 6776 6777 6778 6779 6780
#ifdef I40E_FCOE
	if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
		pf->num_fcoe_msix = pf->num_fcoe_qps;
		v_budget += pf->num_fcoe_msix;
	}

#endif
J
Jesse Brandeburg 已提交
6781
	/* Scale down if necessary, and the rings will share vectors */
6782 6783 6784
	pf->num_lan_msix = min_t(int, pf->num_lan_msix,
			(hw->func_caps.num_msix_vectors - other_vecs));
	v_budget = pf->num_lan_msix + other_vecs;
J
Jesse Brandeburg 已提交
6785 6786 6787 6788 6789 6790 6791 6792 6793

	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;
	vec = i40e_reserve_msix_vectors(pf, v_budget);
6794 6795 6796 6797 6798 6799 6800

	if (vec != v_budget) {
		/* 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.
		 */
6801 6802 6803 6804
#ifdef I40E_FCOE
		pf->num_fcoe_qps = 0;
		pf->num_fcoe_msix = 0;
#endif
6805 6806 6807
		pf->num_vmdq_msix = 0;
	}

J
Jesse Brandeburg 已提交
6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821
	if (vec < I40E_MIN_MSIX) {
		pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
		kfree(pf->msix_entries);
		pf->msix_entries = NULL;
		return -ENODEV;

	} else if (vec == I40E_MIN_MSIX) {
		/* 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;

	} else if (vec != v_budget) {
6822 6823 6824
		/* reserve the misc vector */
		vec--;

J
Jesse Brandeburg 已提交
6825 6826
		/* Scale vector usage down */
		pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6827
		pf->num_vmdq_vsis = 1;
J
Jesse Brandeburg 已提交
6828 6829 6830 6831 6832 6833 6834

		/* partition out the remaining vectors */
		switch (vec) {
		case 2:
			pf->num_lan_msix = 1;
			break;
		case 3:
6835 6836 6837 6838 6839 6840 6841
#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
6842
			pf->num_lan_msix = 2;
6843
#endif
J
Jesse Brandeburg 已提交
6844 6845
			break;
		default:
6846 6847 6848 6849 6850 6851 6852
#ifdef I40E_FCOE
			/* give one vector to FCoE */
			if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
				pf->num_fcoe_msix = 1;
				vec--;
			}
#endif
J
Jesse Brandeburg 已提交
6853 6854 6855 6856 6857 6858 6859 6860
			pf->num_lan_msix = min_t(int, (vec / 2),
						 pf->num_lan_qps);
			pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
						  I40E_DEFAULT_NUM_VMDQ_VSI);
			break;
		}
	}

6861 6862 6863 6864 6865
	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;
	}
6866 6867 6868 6869 6870 6871 6872
#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
J
Jesse Brandeburg 已提交
6873 6874 6875
	return err;
}

6876
/**
6877
 * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6878 6879 6880 6881 6882
 * @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.
 **/
6883
static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894 6895 6896
{
	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
6897
			       i40e_napi_poll, NAPI_POLL_WEIGHT);
6898

6899 6900 6901
	q_vector->rx.latency_range = I40E_LOW_LATENCY;
	q_vector->tx.latency_range = I40E_LOW_LATENCY;

6902 6903 6904 6905 6906 6907
	/* tie q_vector and vsi together */
	vsi->q_vectors[v_idx] = q_vector;

	return 0;
}

J
Jesse Brandeburg 已提交
6908
/**
6909
 * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
J
Jesse Brandeburg 已提交
6910 6911 6912 6913 6914
 * @vsi: the VSI being configured
 *
 * We allocate one q_vector per queue interrupt.  If allocation fails we
 * return -ENOMEM.
 **/
6915
static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
J
Jesse Brandeburg 已提交
6916 6917 6918
{
	struct i40e_pf *pf = vsi->back;
	int v_idx, num_q_vectors;
6919
	int err;
J
Jesse Brandeburg 已提交
6920 6921 6922 6923 6924 6925 6926 6927 6928 6929

	/* 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++) {
6930
		err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6931 6932
		if (err)
			goto err_out;
J
Jesse Brandeburg 已提交
6933 6934 6935
	}

	return 0;
6936 6937 6938 6939 6940 6941

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

	return err;
J
Jesse Brandeburg 已提交
6942 6943 6944 6945 6946 6947 6948 6949 6950 6951 6952 6953 6954
}

/**
 * i40e_init_interrupt_scheme - Determine proper interrupt scheme
 * @pf: board private structure to initialize
 **/
static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
{
	int err = 0;

	if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
		err = i40e_init_msix(pf);
		if (err) {
J
Jesse Brandeburg 已提交
6955
			pf->flags &= ~(I40E_FLAG_MSIX_ENABLED	|
6956 6957 6958
#ifdef I40E_FCOE
				       I40E_FLAG_FCOE_ENABLED	|
#endif
J
Jesse Brandeburg 已提交
6959
				       I40E_FLAG_RSS_ENABLED	|
6960
				       I40E_FLAG_DCB_CAPABLE	|
J
Jesse Brandeburg 已提交
6961 6962 6963 6964
				       I40E_FLAG_SRIOV_ENABLED	|
				       I40E_FLAG_FD_SB_ENABLED	|
				       I40E_FLAG_FD_ATR_ENABLED	|
				       I40E_FLAG_VMDQ_ENABLED);
J
Jesse Brandeburg 已提交
6965 6966 6967 6968 6969 6970 6971 6972

			/* 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
6973
		dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
J
Jesse Brandeburg 已提交
6974 6975
		err = pci_enable_msi(pf->pdev);
		if (err) {
6976
			dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
J
Jesse Brandeburg 已提交
6977 6978 6979 6980
			pf->flags &= ~I40E_FLAG_MSI_ENABLED;
		}
	}

6981
	if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
C
Catherine Sullivan 已提交
6982
		dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6983

J
Jesse Brandeburg 已提交
6984 6985 6986 6987 6988 6989 6990 6991 6992 6993 6994 6995 6996 6997 6998 6999 7000 7001 7002 7003 7004 7005 7006 7007 7008
	/* track first vector for misc interrupts */
	err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
}

/**
 * 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,
				  i40e_intr, 0, pf->misc_int_name, pf);
		if (err) {
			dev_info(&pf->pdev->dev,
C
Catherine Sullivan 已提交
7009 7010
				 "request_irq for %s failed: %d\n",
				 pf->misc_int_name, err);
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Jesse Brandeburg 已提交
7011 7012 7013 7014 7015 7016 7017 7018 7019 7020 7021 7022 7023 7024 7025 7026 7027 7028 7029 7030 7031 7032 7033
			return -EFAULT;
		}
	}

	i40e_enable_misc_int_causes(hw);

	/* 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)
{
7034
	u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7035 7036 7037 7038
	struct i40e_hw *hw = &pf->hw;
	u32 lut = 0;
	int i, j;
	u64 hena;
7039
	u32 reg_val;
J
Jesse Brandeburg 已提交
7040

7041
	netdev_rss_key_fill(rss_key, sizeof(rss_key));
J
Jesse Brandeburg 已提交
7042
	for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7043
		wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
J
Jesse Brandeburg 已提交
7044 7045 7046 7047

	/* 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);
7048
	hena |= I40E_DEFAULT_RSS_HENA;
J
Jesse Brandeburg 已提交
7049 7050 7051
	wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
	wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));

7052 7053 7054 7055 7056 7057 7058 7059 7060 7061 7062
	/* Check capability and Set table size and register per hw expectation*/
	reg_val = rd32(hw, I40E_PFQF_CTL_0);
	if (hw->func_caps.rss_table_size == 512) {
		reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
		pf->rss_table_size = 512;
	} else {
		pf->rss_table_size = 128;
		reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
	}
	wr32(hw, I40E_PFQF_CTL_0, reg_val);

J
Jesse Brandeburg 已提交
7063
	/* Populate the LUT with max no. of queues in round robin fashion */
7064
	for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
J
Jesse Brandeburg 已提交
7065 7066 7067 7068 7069 7070 7071 7072 7073 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086

		/* 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.
		 */
		if (j == pf->rss_size)
			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;
}

7087 7088 7089 7090 7091 7092 7093 7094 7095 7096 7097 7098 7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113
/**
 * 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)
{
	if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
		return 0;

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

	if (queue_count != pf->rss_size) {
		i40e_prep_for_reset(pf);

		pf->rss_size = queue_count;

		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;
}

J
Jesse Brandeburg 已提交
7114 7115 7116 7117 7118 7119 7120 7121 7122 7123 7124 7125 7126 7127 7128
/**
 * 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
7129
	pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
J
Jesse Brandeburg 已提交
7130 7131 7132 7133 7134 7135 7136 7137 7138 7139 7140 7141 7142
	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     |
		    I40E_FLAG_MSIX_ENABLED    |
		    I40E_FLAG_RX_1BUF_ENABLED;

7143 7144 7145 7146
	/* 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;

7147 7148 7149
	/* 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
7150
	pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
P
Paul M Stillwell Jr 已提交
7151
	pf->rss_size = 1;
7152 7153
	pf->rss_size_max = min_t(int, pf->rss_size_max,
				 pf->hw.func_caps.num_tx_qp);
J
Jesse Brandeburg 已提交
7154 7155
	if (pf->hw.func_caps.rss) {
		pf->flags |= I40E_FLAG_RSS_ENABLED;
7156
		pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
J
Jesse Brandeburg 已提交
7157 7158
	}

7159 7160 7161 7162 7163 7164
	/* 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");
	}

7165 7166 7167 7168 7169
	/* 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;
7170 7171
		/* Setup a counter for fd_atr per pf */
		pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7172
		if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
J
Jesse Brandeburg 已提交
7173
			pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7174 7175
			/* Setup a counter for fd_sb per pf */
			pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7176 7177
		} else {
			dev_info(&pf->pdev->dev,
A
Anjali Singhai Jain 已提交
7178
				 "Flow Director Sideband mode Disabled in MFP mode\n");
J
Jesse Brandeburg 已提交
7179
		}
7180 7181 7182 7183
		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;
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Jesse Brandeburg 已提交
7184 7185 7186 7187 7188 7189 7190 7191
	}

	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;
	}

7192 7193 7194 7195 7196 7197
#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
7198 7199 7200 7201 7202 7203 7204 7205 7206 7207 7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220 7221 7222 7223 7224 7225 7226 7227 7228 7229 7230 7231 7232 7233
#ifdef CONFIG_PCI_IOV
	if (pf->hw.func_caps.num_vfs) {
		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;

	/* set up vector assignment tracking */
	size = sizeof(struct i40e_lump_tracking)
		+ (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
	pf->irq_pile = kzalloc(size, GFP_KERNEL);
	if (!pf->irq_pile) {
		kfree(pf->qp_pile);
		err = -ENOMEM;
		goto sw_init_done;
	}
	pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
	pf->irq_pile->search_hint = 0;

7234 7235
	pf->tx_timeout_recovery_level = 1;

J
Jesse Brandeburg 已提交
7236 7237 7238 7239 7240 7241
	mutex_init(&pf->switch_mutex);

sw_init_done:
	return err;
}

7242 7243 7244 7245 7246 7247 7248 7249 7250 7251 7252 7253 7254 7255 7256 7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267
/**
 * 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;
7268
		pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7269 7270 7271 7272 7273
		/* 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");
7274 7275 7276 7277
		/* 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;
7278 7279 7280 7281
	}
	return need_reset;
}

J
Jesse Brandeburg 已提交
7282 7283 7284 7285 7286 7287 7288 7289 7290 7291
/**
 * 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;
7292 7293
	struct i40e_pf *pf = vsi->back;
	bool need_reset;
J
Jesse Brandeburg 已提交
7294 7295 7296 7297 7298 7299

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

7300 7301 7302 7303 7304
	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
7305 7306 7307
	return 0;
}

7308 7309 7310 7311 7312 7313 7314 7315 7316 7317 7318 7319 7320 7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332 7333 7334 7335 7336 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359 7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370 7371 7372 7373 7374 7375 7376 7377 7378 7379 7380 7381 7382 7383 7384 7385 7386 7387 7388 7389 7390 7391 7392 7393 7394 7395 7396 7397 7398 7399 7400 7401 7402 7403 7404 7405
#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
7406 7407 7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421
static int i40e_get_phys_port_id(struct net_device *netdev,
				 struct netdev_phys_port_id *ppid)
{
	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;
}

7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434 7435 7436 7437 7438 7439 7440 7441 7442 7443 7444 7445 7446 7447 7448 7449 7450 7451 7452 7453 7454 7455 7456 7457 7458 7459 7460 7461 7462 7463 7464 7465 7466 7467 7468 7469 7470 7471 7472 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
#ifdef HAVE_FDB_OPS
#ifdef USE_CONST_DEV_UC_CHAR
static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
			    struct net_device *dev,
			    const unsigned char *addr,
			    u16 flags)
#else
static int i40e_ndo_fdb_add(struct ndmsg *ndm,
			    struct net_device *dev,
			    unsigned char *addr,
			    u16 flags)
#endif
{
	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;

	/* 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;
}

#ifndef USE_DEFAULT_FDB_DEL_DUMP
#ifdef USE_CONST_DEV_UC_CHAR
static int i40e_ndo_fdb_del(struct ndmsg *ndm,
			    struct net_device *dev,
			    const unsigned char *addr)
#else
static int i40e_ndo_fdb_del(struct ndmsg *ndm,
			    struct net_device *dev,
			    unsigned char *addr)
#endif
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_pf *pf = np->vsi->back;
	int err = -EOPNOTSUPP;

	if (ndm->ndm_state & NUD_PERMANENT) {
		netdev_info(dev, "FDB only supports static addresses\n");
		return -EINVAL;
	}

	if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
		if (is_unicast_ether_addr(addr))
			err = dev_uc_del(dev, addr);
		else if (is_multicast_ether_addr(addr))
			err = dev_mc_del(dev, addr);
		else
			err = -EINVAL;
	}

	return err;
}

static int i40e_ndo_fdb_dump(struct sk_buff *skb,
			     struct netlink_callback *cb,
			     struct net_device *dev,
7499
			     struct net_device *filter_dev,
7500 7501 7502 7503 7504 7505
			     int idx)
{
	struct i40e_netdev_priv *np = netdev_priv(dev);
	struct i40e_pf *pf = np->vsi->back;

	if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
7506
		idx = ndo_dflt_fdb_dump(skb, cb, dev, filter_dev, idx);
7507 7508 7509 7510 7511 7512

	return idx;
}

#endif /* USE_DEFAULT_FDB_DEL_DUMP */
#endif /* HAVE_FDB_OPS */
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static const struct net_device_ops i40e_netdev_ops = {
	.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
7522
	.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,
7530 7531 7532 7533
#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,
7537
	.ndo_set_vf_rate	= i40e_ndo_set_vf_bw,
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	.ndo_get_vf_config	= i40e_ndo_get_vf_config,
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7539
	.ndo_set_vf_link_state	= i40e_ndo_set_vf_link_state,
7540
	.ndo_set_vf_spoofchk	= i40e_ndo_set_vf_spoofchk,
7541 7542 7543 7544
#ifdef CONFIG_I40E_VXLAN
	.ndo_add_vxlan_port	= i40e_add_vxlan_port,
	.ndo_del_vxlan_port	= i40e_del_vxlan_port,
#endif
7545
	.ndo_get_phys_port_id	= i40e_get_phys_port_id,
7546 7547 7548 7549 7550 7551 7552
#ifdef HAVE_FDB_OPS
	.ndo_fdb_add		= i40e_ndo_fdb_add,
#ifndef USE_DEFAULT_FDB_DEL_DUMP
	.ndo_fdb_del		= i40e_ndo_fdb_del,
	.ndo_fdb_dump		= i40e_ndo_fdb_dump,
#endif
#endif
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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)
{
7563
	u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
J
Jesse Brandeburg 已提交
7564 7565 7566 7567 7568 7569 7570 7571
	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);
7572
	netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
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	if (!netdev)
		return -ENOMEM;

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

7580
	netdev->hw_enc_features |= NETIF_F_IP_CSUM	 |
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7581
				  NETIF_F_GSO_UDP_TUNNEL |
7582
				  NETIF_F_TSO;
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	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		       |
7594
			   NETIF_F_TSO_ECN	       |
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			   NETIF_F_TSO6		       |
			   NETIF_F_RXCSUM	       |
			   NETIF_F_RXHASH	       |
			   0;

7600 7601 7602
	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);
7608
		ether_addr_copy(mac_addr, hw->mac.perm_addr);
7609 7610 7611 7612
		/* 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.
7613
		 */
7614 7615 7616
		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
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	} 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);
	}
7624
	i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
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Jesse Brandeburg 已提交
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7626 7627
	ether_addr_copy(netdev->dev_addr, mac_addr);
	ether_addr_copy(netdev->perm_addr, mac_addr);
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	/* 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);
7642 7643 7644
#ifdef I40E_FCOE
	i40e_fcoe_config_netdev(netdev, vsi);
#endif
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	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);
}

/**
 * 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,
				 "couldn't get pf vsi config, err %d, aq_err %d\n",
				 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 */
		if (pf->flags & I40E_FLAG_MFP_ENABLED) {
			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.
			 */
			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:
7743 7744 7745 7746 7747
		ctxt.pf_num = hw->pf_id;
		ctxt.vf_num = 0;
		ctxt.uplink_seid = vsi->uplink_seid;
		ctxt.connection_type = 0x1;     /* regular data port */
		ctxt.flags = I40E_AQ_VSI_TYPE_PF;
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Jesse Brandeburg 已提交
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		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;
		ctxt.connection_type = 0x1;     /* regular data port */
		ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;

		ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
		ctxt.info.switch_id = 0;
		ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);

		/* 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;
		ctxt.connection_type = 0x1;     /* regular data port */
		ctxt.flags = I40E_AQ_VSI_TYPE_VF;

		ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);

		/* This VSI is connected to VEB so the switch_id
		 * should be set to zero by default.
		 */
		ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);

		ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
		ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7786 7787 7788 7789 7790 7791 7792
		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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		/* Setup the VSI tx/rx queue map for TC0 only for now */
		i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
		break;

7797 7798 7799 7800 7801 7802 7803 7804 7805 7806
#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
7830 7831

		if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7832 7833 7834 7835 7836 7837 7838 7839 7840 7841 7842 7843 7844 7845 7846 7847
			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
7848 7849 7850
						  I40E_AQC_WRITE_TYPE_LAA_WOL,
						  f->macaddr, NULL);
		}
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Jesse Brandeburg 已提交
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 7891 7892 7893 7894 7895 7896 7897 7898 7899 7900 7901 7902 7903 7904 7905 7906 7907
	}
	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 {
7908
			i40e_vsi_close(vsi);
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Jesse Brandeburg 已提交
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		}
		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);
7920 7921 7922 7923
	if (vsi->netdev) {
		free_netdev(vsi->netdev);
		vsi->netdev = NULL;
	}
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	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.
	 */
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Mitch Williams 已提交
7935
	for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
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Jesse Brandeburg 已提交
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		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;

7971
	if (vsi->q_vectors[0]) {
J
Jesse Brandeburg 已提交
7972 7973 7974 7975 7976 7977
		dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
			 vsi->seid);
		return -EEXIST;
	}

	if (vsi->base_vector) {
7978
		dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
J
Jesse Brandeburg 已提交
7979 7980 7981 7982
			 vsi->seid, vsi->base_vector);
		return -EEXIST;
	}

7983
	ret = i40e_vsi_alloc_q_vectors(vsi);
J
Jesse Brandeburg 已提交
7984 7985 7986 7987 7988 7989 7990 7991
	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;
	}

7992 7993 7994
	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
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	if (vsi->base_vector < 0) {
		dev_info(&pf->pdev->dev,
7997 7998
			 "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
7999 8000 8001 8002 8003 8004 8005 8006 8007
		i40e_vsi_free_q_vectors(vsi);
		ret = -ENOENT;
		goto vector_setup_out;
	}

vector_setup_out:
	return ret;
}

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
/**
 * 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) {
8034 8035 8036
		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);
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 8066 8067 8068 8069 8070 8071
		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
8072 8073 8074 8075 8076 8077 8078 8079 8080 8081 8082 8083 8084 8085 8086 8087 8088 8089 8090 8091 8092 8093 8094 8095 8096 8097 8098 8099 8100 8101 8102 8103 8104 8105 8106 8107 8108 8109 8110 8111 8112 8113 8114
/**
 * 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
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		for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
8116 8117 8118 8119 8120 8121 8122 8123 8124 8125 8126 8127 8128 8129 8130 8131 8132 8133 8134 8135 8136 8137 8138 8139 8140 8141 8142 8143 8144 8145 8146 8147 8148 8149 8150 8151
			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);

		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];
8152 8153
	if (!vsi)
		goto err_alloc;
J
Jesse Brandeburg 已提交
8154 8155 8156 8157 8158 8159 8160 8161
	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 */
8162 8163
	ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
				vsi->idx);
J
Jesse Brandeburg 已提交
8164
	if (ret < 0) {
8165 8166 8167
		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
8168 8169 8170 8171 8172 8173 8174 8175 8176 8177 8178 8179 8180 8181
		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:
8182
	case I40E_VSI_FCOE:
J
Jesse Brandeburg 已提交
8183 8184 8185 8186 8187 8188 8189 8190
		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
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#ifdef CONFIG_I40E_DCB
		/* Setup DCB netlink interface */
		i40e_dcbnl_setup(vsi);
#endif /* CONFIG_I40E_DCB */
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		/* 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;
	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
8360
	for (i = 0; i < pf->num_alloc_vsi; i++) {
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Jesse Brandeburg 已提交
8361 8362 8363 8364 8365 8366 8367 8368 8369 8370 8371 8372 8373 8374 8375 8376 8377 8378 8379 8380 8381 8382 8383 8384 8385 8386 8387 8388 8389 8390 8391 8392 8393 8394 8395 8396 8397 8398 8399 8400 8401 8402 8403 8404 8405 8406 8407 8408 8409 8410 8411
		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
8412
	for (i = 0; i < pf->num_alloc_vsi; i++) {
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Jesse Brandeburg 已提交
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		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)
{
8450
	bool is_default = false;
K
Kevin Scott 已提交
8451
	bool is_cloud = false;
J
Jesse Brandeburg 已提交
8452 8453 8454 8455
	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
8456 8457
			      veb->enabled_tc, is_default,
			      is_cloud, &veb->seid, NULL);
J
Jesse Brandeburg 已提交
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	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
8524
	for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
J
Jesse Brandeburg 已提交
8525 8526
		if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
			break;
M
Mitch Williams 已提交
8527
	if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
J
Jesse Brandeburg 已提交
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 8560 8561
		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;
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Shannon Nelson 已提交
8562 8563
	if (vsi_idx == pf->lan_vsi)
		pf->lan_veb = veb->idx;
J
Jesse Brandeburg 已提交
8564 8565 8566 8567 8568 8569 8570 8571 8572 8573 8574 8575 8576 8577 8578 8579 8580 8581 8582 8583 8584 8585 8586 8587 8588 8589 8590 8591 8592 8593 8594 8595 8596 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 8623 8624 8625 8626 8627 8628 8629 8630 8631 8632 8633 8634 8635 8636 8637 8638 8639 8640 8641 8642 8643 8644 8645 8646 8647 8648 8649 8650 8651 8652 8653 8654 8655 8656 8657 8658 8659 8660 8661 8662 8663 8664 8665 8666 8667 8668 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 8704 8705 8706 8707 8708 8709 8710 8711 8712 8713 8714

	return veb;

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

/**
 * i40e_setup_pf_switch_element - set pf vars based on switch type
 * @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
8715
 * @reinit: if the Main VSI needs to re-initialized.
J
Jesse Brandeburg 已提交
8716 8717 8718
 *
 * Returns 0 on success, negative value on failure
 **/
8719
static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
J
Jesse Brandeburg 已提交
8720 8721 8722 8723 8724 8725 8726 8727 8728 8729 8730 8731 8732 8733
{
	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 */
8734
	if (pf->lan_vsi == I40E_NO_VSI || reinit) {
J
Jesse Brandeburg 已提交
8735 8736 8737 8738 8739 8740 8741 8742 8743 8744
		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;
8745 8746 8747 8748
		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
8749 8750 8751 8752 8753 8754 8755 8756 8757 8758 8759 8760 8761 8762
		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]);

8763 8764
	i40e_fdir_sb_setup(pf);

J
Jesse Brandeburg 已提交
8765 8766 8767 8768 8769 8770 8771 8772 8773 8774 8775 8776 8777 8778 8779
	/* 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 */
8780 8781 8782 8783 8784 8785 8786 8787
	i40e_update_link_info(&pf->hw, true);
	i40e_link_event(pf);

	/* Initialize user-specific link properties */
	pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
				  I40E_AQ_AN_COMPLETED) ? true : false);

	/* fill in link information and enable LSE reporting */
8788
	i40e_update_link_info(&pf->hw, true);
J
Jesse Brandeburg 已提交
8789 8790
	i40e_link_event(pf);

8791
	/* Initialize user-specific link properties */
J
Jesse Brandeburg 已提交
8792 8793
	pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
				  I40E_AQ_AN_COMPLETED) ? true : false);
8794

J
Jacob Keller 已提交
8795 8796
	i40e_ptp_init(pf);

J
Jesse Brandeburg 已提交
8797 8798 8799 8800 8801 8802 8803 8804 8805 8806 8807 8808
	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;
8809 8810 8811
#ifdef I40E_FCOE
	pf->num_fcoe_qps = 0;
#endif
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Jesse Brandeburg 已提交
8812 8813 8814 8815 8816 8817 8818

	/* 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;

8819
	if ((queues_left == 1) ||
8820
	    !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
J
Jesse Brandeburg 已提交
8821 8822 8823 8824 8825
		/* 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
8826
		pf->flags &= ~(I40E_FLAG_RSS_ENABLED	|
8827 8828 8829
#ifdef I40E_FCOE
			       I40E_FLAG_FCOE_ENABLED	|
#endif
J
Jesse Brandeburg 已提交
8830 8831
			       I40E_FLAG_FD_SB_ENABLED	|
			       I40E_FLAG_FD_ATR_ENABLED	|
8832
			       I40E_FLAG_DCB_CAPABLE	|
J
Jesse Brandeburg 已提交
8833 8834
			       I40E_FLAG_SRIOV_ENABLED	|
			       I40E_FLAG_VMDQ_ENABLED);
8835 8836
	} else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
				  I40E_FLAG_FD_SB_ENABLED |
8837
				  I40E_FLAG_FD_ATR_ENABLED |
8838
				  I40E_FLAG_DCB_CAPABLE))) {
8839 8840 8841 8842 8843
		/* one qp for PF */
		pf->rss_size = pf->num_lan_qps = 1;
		queues_left -= pf->num_lan_qps;

		pf->flags &= ~(I40E_FLAG_RSS_ENABLED	|
8844 8845 8846
#ifdef I40E_FCOE
			       I40E_FLAG_FCOE_ENABLED	|
#endif
8847 8848 8849 8850
			       I40E_FLAG_FD_SB_ENABLED	|
			       I40E_FLAG_FD_ATR_ENABLED	|
			       I40E_FLAG_DCB_ENABLED	|
			       I40E_FLAG_VMDQ_ENABLED);
J
Jesse Brandeburg 已提交
8851
	} else {
8852
		/* Not enough queues for all TCs */
8853
		if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8854
		    (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8855
			pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8856 8857 8858 8859 8860 8861
			dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
		}
		pf->num_lan_qps = pf->rss_size_max;
		queues_left -= pf->num_lan_qps;
	}

8862 8863 8864 8865 8866 8867 8868 8869 8870 8871 8872 8873 8874 8875 8876 8877
#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
8878 8879 8880 8881 8882 8883 8884
	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
8885 8886 8887 8888
	}

	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
	    pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8889 8890
		pf->num_req_vfs = min_t(int, pf->num_req_vfs,
					(queues_left / pf->num_vf_qps));
J
Jesse Brandeburg 已提交
8891 8892 8893 8894 8895 8896 8897 8898 8899 8900
		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);
	}

8901
	pf->queues_left = queues_left;
8902 8903 8904
#ifdef I40E_FCOE
	dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
#endif
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Jesse Brandeburg 已提交
8905 8906 8907 8908 8909 8910 8911 8912 8913 8914 8915 8916 8917 8918 8919 8920 8921 8922 8923 8924
}

/**
 * i40e_setup_pf_filter_control - Setup PF static filter control
 * @pf: PF to be setup
 *
 * i40e_setup_pf_filter_control sets up a pf's initial filter control
 * 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
8925
	if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
J
Jesse Brandeburg 已提交
8926 8927 8928 8929 8930 8931 8932 8933 8934 8935 8936 8937
		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
8938 8939 8940 8941 8942 8943 8944 8945 8946 8947 8948 8949 8950 8951 8952 8953 8954 8955 8956 8957 8958 8959 8960 8961
#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
	buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
		       pf->vsi[pf->lan_vsi]->num_queue_pairs);

	if (pf->flags & I40E_FLAG_RSS_ENABLED)
		buf += sprintf(buf, "RSS ");
	if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8962 8963 8964
		buf += sprintf(buf, "FD_ATR ");
	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
		buf += sprintf(buf, "FD_SB ");
J
Jesse Brandeburg 已提交
8965
		buf += sprintf(buf, "NTUPLE ");
8966
	}
8967
	if (pf->flags & I40E_FLAG_DCB_CAPABLE)
J
Jesse Brandeburg 已提交
8968 8969 8970
		buf += sprintf(buf, "DCB ");
	if (pf->flags & I40E_FLAG_PTP)
		buf += sprintf(buf, "PTP ");
8971 8972 8973 8974
#ifdef I40E_FCOE
	if (pf->flags & I40E_FLAG_FCOE_ENABLED)
		buf += sprintf(buf, "FCOE ");
#endif
J
Jesse Brandeburg 已提交
8975 8976 8977 8978 8979 8980

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

J
Jesse Brandeburg 已提交
8981 8982 8983 8984 8985 8986 8987 8988 8989 8990 8991 8992 8993 8994 8995
/**
 * i40e_probe - Device initialization routine
 * @pdev: PCI device information struct
 * @ent: entry in i40e_pci_tbl
 *
 * i40e_probe initializes a pf identified by a pci_dev structure.
 * The OS initialization, configuring of the pf private structure,
 * 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)
{
	struct i40e_pf *pf;
	struct i40e_hw *hw;
8996
	static u16 pfs_found;
8997
	u16 link_status;
J
Jesse Brandeburg 已提交
8998 8999
	int err = 0;
	u32 len;
9000
	u32 i;
J
Jesse Brandeburg 已提交
9001 9002 9003 9004 9005 9006

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

	/* set up for high or low dma */
9007 9008
	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
	if (err) {
9009 9010 9011 9012 9013 9014
		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
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 9048 9049 9050 9051 9052 9053 9054 9055 9056 9057 9058 9059 9060
	}

	/* 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;
	hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
			      pci_resource_len(pdev, 0));
	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);
9061
	pf->instance = pfs_found;
J
Jesse Brandeburg 已提交
9062

S
Shannon Nelson 已提交
9063 9064 9065 9066 9067
	if (debug != -1) {
		pf->msg_enable = pf->hw.debug_mask;
		pf->msg_enable = debug;
	}

9068 9069 9070 9071 9072 9073 9074 9075 9076 9077 9078
	/* 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
9079
	/* Reset here to make sure all is clean and to define PF 'n' */
9080
	i40e_clear_hw(hw);
J
Jesse Brandeburg 已提交
9081 9082 9083 9084 9085 9086 9087 9088 9089 9090 9091 9092 9093 9094 9095 9096 9097 9098 9099 9100 9101 9102
	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;
	snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
		 "%s-pf%d:misc",
		 dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);

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

9103 9104 9105
	/* set up a default setting for link flow control */
	pf->hw.fc.requested_mode = I40E_FC_NONE;

J
Jesse Brandeburg 已提交
9106 9107 9108 9109
	err = i40e_init_adminq(hw);
	dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
	if (err) {
		dev_info(&pdev->dev,
9110
			 "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
9111 9112 9113
		goto err_pf_reset;
	}

9114 9115
	if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
	    hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9116
		dev_info(&pdev->dev,
9117 9118 9119
			 "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))
9120
		dev_info(&pdev->dev,
9121
			 "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9122 9123


9124 9125
	i40e_verify_eeprom(pf);

9126 9127 9128 9129
	/* 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");

9130
	i40e_clear_pxe_mode(hw);
J
Jesse Brandeburg 已提交
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
	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;
	}

	i40e_get_mac_addr(hw, hw->mac.addr);
9157
	if (!is_valid_ether_addr(hw->mac.addr)) {
J
Jesse Brandeburg 已提交
9158 9159 9160 9161 9162
		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);
9163
	ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9164 9165 9166
	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;
9167 9168 9169 9170 9171 9172 9173 9174 9175 9176 9177 9178
#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
9179 9180 9181

	pci_set_drvdata(pdev, pf);
	pci_save_state(pdev);
N
Neerav Parikh 已提交
9182 9183 9184 9185
#ifdef CONFIG_I40E_DCB
	err = i40e_init_pf_dcb(pf);
	if (err) {
		dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
9186
		pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9187
		/* Continue without DCB enabled */
N
Neerav Parikh 已提交
9188 9189
	}
#endif /* CONFIG_I40E_DCB */
J
Jesse Brandeburg 已提交
9190 9191 9192 9193 9194 9195 9196 9197 9198 9199

	/* 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
9200 9201 9202 9203
	/* WoL defaults to disabled */
	pf->wol_en = false;
	device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);

J
Jesse Brandeburg 已提交
9204 9205 9206 9207
	/* set up the main switch operations */
	i40e_determine_queue_usage(pf);
	i40e_init_interrupt_scheme(pf);

M
Mitch Williams 已提交
9208 9209 9210 9211
	/* 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
9212
	 */
M
Mitch Williams 已提交
9213 9214 9215 9216 9217 9218 9219
	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
9220
	pf->vsi = kzalloc(len, GFP_KERNEL);
9221 9222
	if (!pf->vsi) {
		err = -ENOMEM;
J
Jesse Brandeburg 已提交
9223
		goto err_switch_setup;
9224
	}
J
Jesse Brandeburg 已提交
9225

9226
	err = i40e_setup_pf_switch(pf, false);
J
Jesse Brandeburg 已提交
9227 9228 9229 9230
	if (err) {
		dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
		goto err_vsis;
	}
9231
	/* if FDIR VSI was set up, start it now */
M
Mitch Williams 已提交
9232
	for (i = 0; i < pf->num_alloc_vsi; i++) {
9233 9234 9235 9236 9237
		if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
			i40e_vsi_open(pf->vsi[i]);
			break;
		}
	}
J
Jesse Brandeburg 已提交
9238

J
Jesse Brandeburg 已提交
9239 9240 9241 9242 9243 9244 9245 9246 9247
	/* 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);

9248 9249 9250 9251 9252 9253 9254
	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);
	}

J
Jesse Brandeburg 已提交
9255 9256 9257 9258 9259 9260 9261 9262 9263 9264 9265 9266 9267 9268 9269 9270 9271 9272 9273 9274
	/* 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;
		}
	}

9275
#ifdef CONFIG_PCI_IOV
J
Jesse Brandeburg 已提交
9276 9277
	/* prep for VF support */
	if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9278 9279
	    (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
	    !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
J
Jesse Brandeburg 已提交
9280 9281 9282 9283 9284 9285 9286
		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
9287 9288 9289 9290 9291 9292 9293 9294 9295 9296

		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
9297
	}
9298
#endif /* CONFIG_PCI_IOV */
J
Jesse Brandeburg 已提交
9299

9300 9301
	pfs_found++;

J
Jesse Brandeburg 已提交
9302 9303 9304
	i40e_dbg_pf_init(pf);

	/* tell the firmware that we're starting */
J
Jesse Brandeburg 已提交
9305
	i40e_send_version(pf);
J
Jesse Brandeburg 已提交
9306 9307 9308 9309 9310

	/* since everything's happy, start the service_task timer */
	mod_timer(&pf->service_timer,
		  round_jiffies(jiffies + pf->service_timer_period));

9311 9312 9313 9314 9315
#ifdef I40E_FCOE
	/* create FCoE interface */
	i40e_fcoe_vsi_setup(pf);

#endif
9316 9317 9318 9319 9320
	/* 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);

J
Jesse Brandeburg 已提交
9321
	dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9322 9323 9324 9325 9326 9327 9328 9329 9330 9331 9332 9333 9334 9335 9336 9337
		(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");
	}

J
Jesse Brandeburg 已提交
9338 9339 9340
	/* print a string summarizing features */
	i40e_print_features(pf);

J
Jesse Brandeburg 已提交
9341 9342 9343 9344 9345 9346 9347
	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);
9348 9349
err_switch_setup:
	i40e_reset_interrupt_capability(pf);
J
Jesse Brandeburg 已提交
9350 9351 9352 9353 9354 9355 9356 9357 9358 9359 9360 9361 9362 9363 9364 9365 9366 9367 9368 9369 9370 9371 9372 9373 9374 9375 9376 9377 9378 9379 9380 9381 9382 9383 9384 9385 9386 9387 9388 9389 9390
	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);
	kfree(pf->irq_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);

J
Jacob Keller 已提交
9391 9392
	i40e_ptp_stop(pf);

J
Jesse Brandeburg 已提交
9393 9394 9395 9396 9397
	/* no more scheduling of any task */
	set_bit(__I40E_DOWN, &pf->state);
	del_timer_sync(&pf->service_timer);
	cancel_work_sync(&pf->service_task);

9398 9399 9400 9401 9402
	if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
		i40e_free_vfs(pf);
		pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
	}

J
Jesse Brandeburg 已提交
9403 9404 9405 9406 9407 9408 9409 9410 9411 9412 9413 9414 9415 9416 9417 9418 9419 9420 9421 9422 9423 9424 9425 9426 9427 9428 9429
	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]);

	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);
	}

	/* shutdown and destroy the HMC */
9430 9431 9432 9433 9434 9435 9436
	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);
	}
J
Jesse Brandeburg 已提交
9437 9438 9439 9440 9441 9442 9443 9444 9445 9446

	/* 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);
M
Mitch Williams 已提交
9447
	for (i = 0; i < pf->num_alloc_vsi; i++) {
J
Jesse Brandeburg 已提交
9448 9449 9450 9451 9452 9453 9454 9455 9456 9457 9458 9459 9460 9461 9462 9463 9464 9465 9466 9467 9468 9469 9470 9471 9472 9473 9474 9475 9476 9477 9478 9479 9480 9481 9482 9483 9484 9485 9486 9487 9488
		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->irq_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 */
9489 9490 9491 9492 9493
	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__);
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	if (test_bit(__I40E_SUSPENDED, &pf->state))
		return;

	rtnl_lock();
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	i40e_handle_reset_warning(pf);
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	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;
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	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));

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	if (system_state == SYSTEM_POWER_OFF) {
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		pci_wake_from_d3(pdev, pf->wol_en);
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		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;
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	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));

	pci_wake_from_d3(pdev, pf->wol_en);
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	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
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}

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/**
 * 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,
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#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);
	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);