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linux/drivers/net/ethernet/intel/ice/ice_main.c

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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018, Intel Corporation. */
/* Intel(R) Ethernet Connection E800 Series Linux Driver */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "ice.h"
#include "ice_lib.h"
#define DRV_VERSION "0.7.2-k"
#define DRV_SUMMARY "Intel(R) Ethernet Connection E800 Series Linux Driver"
const char ice_drv_ver[] = DRV_VERSION;
static const char ice_driver_string[] = DRV_SUMMARY;
static const char ice_copyright[] = "Copyright (c) 2018, Intel Corporation.";
MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_DESCRIPTION(DRV_SUMMARY);
MODULE_LICENSE("GPL v2");
MODULE_VERSION(DRV_VERSION);
static int debug = -1;
module_param(debug, int, 0644);
#ifndef CONFIG_DYNAMIC_DEBUG
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all), hw debug_mask (0x8XXXXXXX)");
#else
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all)");
#endif /* !CONFIG_DYNAMIC_DEBUG */
static struct workqueue_struct *ice_wq;
static const struct net_device_ops ice_netdev_ops;
static void ice_pf_dis_all_vsi(struct ice_pf *pf);
static void ice_rebuild(struct ice_pf *pf);
static void ice_vsi_release_all(struct ice_pf *pf);
static void ice_update_vsi_stats(struct ice_vsi *vsi);
static void ice_update_pf_stats(struct ice_pf *pf);
/**
* ice_get_tx_pending - returns number of Tx descriptors not processed
* @ring: the ring of descriptors
*/
static u32 ice_get_tx_pending(struct ice_ring *ring)
{
u32 head, tail;
head = ring->next_to_clean;
tail = readl(ring->tail);
if (head != tail)
return (head < tail) ?
tail - head : (tail + ring->count - head);
return 0;
}
/**
* ice_check_for_hang_subtask - check for and recover hung queues
* @pf: pointer to PF struct
*/
static void ice_check_for_hang_subtask(struct ice_pf *pf)
{
struct ice_vsi *vsi = NULL;
unsigned int i;
u32 v, v_idx;
int packets;
ice_for_each_vsi(pf, v)
if (pf->vsi[v] && pf->vsi[v]->type == ICE_VSI_PF) {
vsi = pf->vsi[v];
break;
}
if (!vsi || test_bit(__ICE_DOWN, vsi->state))
return;
if (!(vsi->netdev && netif_carrier_ok(vsi->netdev)))
return;
for (i = 0; i < vsi->num_txq; i++) {
struct ice_ring *tx_ring = vsi->tx_rings[i];
if (tx_ring && tx_ring->desc) {
int itr = ICE_ITR_NONE;
/* If packet counter has not changed the queue is
* likely stalled, so force an interrupt for this
* queue.
*
* prev_pkt would be negative if there was no
* pending work.
*/
packets = tx_ring->stats.pkts & INT_MAX;
if (tx_ring->tx_stats.prev_pkt == packets) {
/* Trigger sw interrupt to revive the queue */
v_idx = tx_ring->q_vector->v_idx;
wr32(&vsi->back->hw,
GLINT_DYN_CTL(vsi->hw_base_vector + v_idx),
(itr << GLINT_DYN_CTL_ITR_INDX_S) |
GLINT_DYN_CTL_SWINT_TRIG_M |
GLINT_DYN_CTL_INTENA_MSK_M);
continue;
}
/* Memory barrier between read of packet count and call
* to ice_get_tx_pending()
*/
smp_rmb();
tx_ring->tx_stats.prev_pkt =
ice_get_tx_pending(tx_ring) ? packets : -1;
}
}
}
/**
* ice_add_mac_to_sync_list - creates list of mac addresses to be synced
* @netdev: the net device on which the sync is happening
* @addr: mac address to sync
*
* This is a callback function which is called by the in kernel device sync
* functions (like __dev_uc_sync, __dev_mc_sync, etc). This function only
* populates the tmp_sync_list, which is later used by ice_add_mac to add the
* mac filters from the hardware.
*/
static int ice_add_mac_to_sync_list(struct net_device *netdev, const u8 *addr)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
if (ice_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr))
return -EINVAL;
return 0;
}
/**
* ice_add_mac_to_unsync_list - creates list of mac addresses to be unsynced
* @netdev: the net device on which the unsync is happening
* @addr: mac address to unsync
*
* This is a callback function which is called by the in kernel device unsync
* functions (like __dev_uc_unsync, __dev_mc_unsync, etc). This function only
* populates the tmp_unsync_list, which is later used by ice_remove_mac to
* delete the mac filters from the hardware.
*/
static int ice_add_mac_to_unsync_list(struct net_device *netdev, const u8 *addr)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
if (ice_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr))
return -EINVAL;
return 0;
}
/**
* ice_vsi_fltr_changed - check if filter state changed
* @vsi: VSI to be checked
*
* returns true if filter state has changed, false otherwise.
*/
static bool ice_vsi_fltr_changed(struct ice_vsi *vsi)
{
return test_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags) ||
test_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags) ||
test_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
}
/**
* ice_cfg_promisc - Enable or disable promiscuous mode for a given PF
* @vsi: the VSI being configured
* @promisc_m: mask of promiscuous config bits
* @set_promisc: enable or disable promisc flag request
*
*/
static int ice_cfg_promisc(struct ice_vsi *vsi, u8 promisc_m, bool set_promisc)
{
struct ice_hw *hw = &vsi->back->hw;
enum ice_status status = 0;
if (vsi->type != ICE_VSI_PF)
return 0;
if (vsi->vlan_ena) {
status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
set_promisc);
} else {
if (set_promisc)
status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
0);
else
status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
0);
}
if (status)
return -EIO;
return 0;
}
/**
* ice_vsi_sync_fltr - Update the VSI filter list to the HW
* @vsi: ptr to the VSI
*
* Push any outstanding VSI filter changes through the AdminQ.
*/
static int ice_vsi_sync_fltr(struct ice_vsi *vsi)
{
struct device *dev = &vsi->back->pdev->dev;
struct net_device *netdev = vsi->netdev;
bool promisc_forced_on = false;
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
enum ice_status status = 0;
u32 changed_flags = 0;
u8 promisc_m;
int err = 0;
if (!vsi->netdev)
return -EINVAL;
while (test_and_set_bit(__ICE_CFG_BUSY, vsi->state))
usleep_range(1000, 2000);
changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
vsi->current_netdev_flags = vsi->netdev->flags;
INIT_LIST_HEAD(&vsi->tmp_sync_list);
INIT_LIST_HEAD(&vsi->tmp_unsync_list);
if (ice_vsi_fltr_changed(vsi)) {
clear_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
clear_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
clear_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
/* grab the netdev's addr_list_lock */
netif_addr_lock_bh(netdev);
__dev_uc_sync(netdev, ice_add_mac_to_sync_list,
ice_add_mac_to_unsync_list);
__dev_mc_sync(netdev, ice_add_mac_to_sync_list,
ice_add_mac_to_unsync_list);
/* our temp lists are populated. release lock */
netif_addr_unlock_bh(netdev);
}
/* Remove mac addresses in the unsync list */
status = ice_remove_mac(hw, &vsi->tmp_unsync_list);
ice_free_fltr_list(dev, &vsi->tmp_unsync_list);
if (status) {
netdev_err(netdev, "Failed to delete MAC filters\n");
/* if we failed because of alloc failures, just bail */
if (status == ICE_ERR_NO_MEMORY) {
err = -ENOMEM;
goto out;
}
}
/* Add mac addresses in the sync list */
status = ice_add_mac(hw, &vsi->tmp_sync_list);
ice_free_fltr_list(dev, &vsi->tmp_sync_list);
/* If filter is added successfully or already exists, do not go into
* 'if' condition and report it as error. Instead continue processing
* rest of the function.
*/
if (status && status != ICE_ERR_ALREADY_EXISTS) {
netdev_err(netdev, "Failed to add MAC filters\n");
/* If there is no more space for new umac filters, vsi
* should go into promiscuous mode. There should be some
* space reserved for promiscuous filters.
*/
if (hw->adminq.sq_last_status == ICE_AQ_RC_ENOSPC &&
!test_and_set_bit(__ICE_FLTR_OVERFLOW_PROMISC,
vsi->state)) {
promisc_forced_on = true;
netdev_warn(netdev,
"Reached MAC filter limit, forcing promisc mode on VSI %d\n",
vsi->vsi_num);
} else {
err = -EIO;
goto out;
}
}
/* check for changes in promiscuous modes */
if (changed_flags & IFF_ALLMULTI) {
if (vsi->current_netdev_flags & IFF_ALLMULTI) {
if (vsi->vlan_ena)
promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
else
promisc_m = ICE_MCAST_PROMISC_BITS;
err = ice_cfg_promisc(vsi, promisc_m, true);
if (err) {
netdev_err(netdev, "Error setting Multicast promiscuous mode on VSI %i\n",
vsi->vsi_num);
vsi->current_netdev_flags &= ~IFF_ALLMULTI;
goto out_promisc;
}
} else if (!(vsi->current_netdev_flags & IFF_ALLMULTI)) {
if (vsi->vlan_ena)
promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
else
promisc_m = ICE_MCAST_PROMISC_BITS;
err = ice_cfg_promisc(vsi, promisc_m, false);
if (err) {
netdev_err(netdev, "Error clearing Multicast promiscuous mode on VSI %i\n",
vsi->vsi_num);
vsi->current_netdev_flags |= IFF_ALLMULTI;
goto out_promisc;
}
}
}
if (((changed_flags & IFF_PROMISC) || promisc_forced_on) ||
test_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags)) {
clear_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags);
if (vsi->current_netdev_flags & IFF_PROMISC) {
/* Apply TX filter rule to get traffic from VMs */
status = ice_cfg_dflt_vsi(hw, vsi->idx, true,
ICE_FLTR_TX);
if (status) {
netdev_err(netdev, "Error setting default VSI %i tx rule\n",
vsi->vsi_num);
vsi->current_netdev_flags &= ~IFF_PROMISC;
err = -EIO;
goto out_promisc;
}
/* Apply RX filter rule to get traffic from wire */
status = ice_cfg_dflt_vsi(hw, vsi->idx, true,
ICE_FLTR_RX);
if (status) {
netdev_err(netdev, "Error setting default VSI %i rx rule\n",
vsi->vsi_num);
vsi->current_netdev_flags &= ~IFF_PROMISC;
err = -EIO;
goto out_promisc;
}
} else {
/* Clear TX filter rule to stop traffic from VMs */
status = ice_cfg_dflt_vsi(hw, vsi->idx, false,
ICE_FLTR_TX);
if (status) {
netdev_err(netdev, "Error clearing default VSI %i tx rule\n",
vsi->vsi_num);
vsi->current_netdev_flags |= IFF_PROMISC;
err = -EIO;
goto out_promisc;
}
/* Clear RX filter to remove traffic from wire */
status = ice_cfg_dflt_vsi(hw, vsi->idx, false,
ICE_FLTR_RX);
if (status) {
netdev_err(netdev, "Error clearing default VSI %i rx rule\n",
vsi->vsi_num);
vsi->current_netdev_flags |= IFF_PROMISC;
err = -EIO;
goto out_promisc;
}
}
}
goto exit;
out_promisc:
set_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags);
goto exit;
out:
/* if something went wrong then set the changed flag so we try again */
set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
exit:
clear_bit(__ICE_CFG_BUSY, vsi->state);
return err;
}
/**
* ice_sync_fltr_subtask - Sync the VSI filter list with HW
* @pf: board private structure
*/
static void ice_sync_fltr_subtask(struct ice_pf *pf)
{
int v;
if (!pf || !(test_bit(ICE_FLAG_FLTR_SYNC, pf->flags)))
return;
clear_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
ice_for_each_vsi(pf, v)
if (pf->vsi[v] && ice_vsi_fltr_changed(pf->vsi[v]) &&
ice_vsi_sync_fltr(pf->vsi[v])) {
/* come back and try again later */
set_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
break;
}
}
/**
* ice_prepare_for_reset - prep for the core to reset
* @pf: board private structure
*
* Inform or close all dependent features in prep for reset.
*/
static void
ice_prepare_for_reset(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
/* already prepared for reset */
if (test_bit(__ICE_PREPARED_FOR_RESET, pf->state))
return;
/* Notify VFs of impending reset */
if (ice_check_sq_alive(hw, &hw->mailboxq))
ice_vc_notify_reset(pf);
/* disable the VSIs and their queues that are not already DOWN */
ice_pf_dis_all_vsi(pf);
if (hw->port_info)
ice_sched_clear_port(hw->port_info);
ice_shutdown_all_ctrlq(hw);
set_bit(__ICE_PREPARED_FOR_RESET, pf->state);
}
/**
* ice_do_reset - Initiate one of many types of resets
* @pf: board private structure
* @reset_type: reset type requested
* before this function was called.
*/
static void ice_do_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
{
struct device *dev = &pf->pdev->dev;
struct ice_hw *hw = &pf->hw;
dev_dbg(dev, "reset_type 0x%x requested\n", reset_type);
WARN_ON(in_interrupt());
ice_prepare_for_reset(pf);
/* trigger the reset */
if (ice_reset(hw, reset_type)) {
dev_err(dev, "reset %d failed\n", reset_type);
set_bit(__ICE_RESET_FAILED, pf->state);
clear_bit(__ICE_RESET_OICR_RECV, pf->state);
clear_bit(__ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(__ICE_PFR_REQ, pf->state);
clear_bit(__ICE_CORER_REQ, pf->state);
clear_bit(__ICE_GLOBR_REQ, pf->state);
return;
}
/* PFR is a bit of a special case because it doesn't result in an OICR
* interrupt. So for PFR, rebuild after the reset and clear the reset-
* associated state bits.
*/
if (reset_type == ICE_RESET_PFR) {
pf->pfr_count++;
ice_rebuild(pf);
clear_bit(__ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(__ICE_PFR_REQ, pf->state);
ice_reset_all_vfs(pf, true);
}
}
/**
* ice_reset_subtask - Set up for resetting the device and driver
* @pf: board private structure
*/
static void ice_reset_subtask(struct ice_pf *pf)
{
enum ice_reset_req reset_type = ICE_RESET_INVAL;
/* When a CORER/GLOBR/EMPR is about to happen, the hardware triggers an
* OICR interrupt. The OICR handler (ice_misc_intr) determines what type
* of reset is pending and sets bits in pf->state indicating the reset
* type and __ICE_RESET_OICR_RECV. So, if the latter bit is set
* prepare for pending reset if not already (for PF software-initiated
* global resets the software should already be prepared for it as
* indicated by __ICE_PREPARED_FOR_RESET; for global resets initiated
* by firmware or software on other PFs, that bit is not set so prepare
* for the reset now), poll for reset done, rebuild and return.
*/
if (test_bit(__ICE_RESET_OICR_RECV, pf->state)) {
/* Perform the largest reset requested */
if (test_and_clear_bit(__ICE_CORER_RECV, pf->state))
reset_type = ICE_RESET_CORER;
if (test_and_clear_bit(__ICE_GLOBR_RECV, pf->state))
reset_type = ICE_RESET_GLOBR;
/* return if no valid reset type requested */
if (reset_type == ICE_RESET_INVAL)
return;
ice_prepare_for_reset(pf);
/* make sure we are ready to rebuild */
if (ice_check_reset(&pf->hw)) {
set_bit(__ICE_RESET_FAILED, pf->state);
} else {
/* done with reset. start rebuild */
pf->hw.reset_ongoing = false;
ice_rebuild(pf);
/* clear bit to resume normal operations, but
* ICE_NEEDS_RESTART bit is set incase rebuild failed
*/
clear_bit(__ICE_RESET_OICR_RECV, pf->state);
clear_bit(__ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(__ICE_PFR_REQ, pf->state);
clear_bit(__ICE_CORER_REQ, pf->state);
clear_bit(__ICE_GLOBR_REQ, pf->state);
ice_reset_all_vfs(pf, true);
}
return;
}
/* No pending resets to finish processing. Check for new resets */
if (test_bit(__ICE_PFR_REQ, pf->state))
reset_type = ICE_RESET_PFR;
if (test_bit(__ICE_CORER_REQ, pf->state))
reset_type = ICE_RESET_CORER;
if (test_bit(__ICE_GLOBR_REQ, pf->state))
reset_type = ICE_RESET_GLOBR;
/* If no valid reset type requested just return */
if (reset_type == ICE_RESET_INVAL)
return;
/* reset if not already down or busy */
if (!test_bit(__ICE_DOWN, pf->state) &&
!test_bit(__ICE_CFG_BUSY, pf->state)) {
ice_do_reset(pf, reset_type);
}
}
/**
* ice_print_link_msg - print link up or down message
* @vsi: the VSI whose link status is being queried
* @isup: boolean for if the link is now up or down
*/
void ice_print_link_msg(struct ice_vsi *vsi, bool isup)
{
const char *speed;
const char *fc;
if (vsi->current_isup == isup)
return;
vsi->current_isup = isup;
if (!isup) {
netdev_info(vsi->netdev, "NIC Link is Down\n");
return;
}
switch (vsi->port_info->phy.link_info.link_speed) {
case ICE_AQ_LINK_SPEED_40GB:
speed = "40 G";
break;
case ICE_AQ_LINK_SPEED_25GB:
speed = "25 G";
break;
case ICE_AQ_LINK_SPEED_20GB:
speed = "20 G";
break;
case ICE_AQ_LINK_SPEED_10GB:
speed = "10 G";
break;
case ICE_AQ_LINK_SPEED_5GB:
speed = "5 G";
break;
case ICE_AQ_LINK_SPEED_2500MB:
speed = "2.5 G";
break;
case ICE_AQ_LINK_SPEED_1000MB:
speed = "1 G";
break;
case ICE_AQ_LINK_SPEED_100MB:
speed = "100 M";
break;
default:
speed = "Unknown";
break;
}
switch (vsi->port_info->fc.current_mode) {
case ICE_FC_FULL:
fc = "RX/TX";
break;
case ICE_FC_TX_PAUSE:
fc = "TX";
break;
case ICE_FC_RX_PAUSE:
fc = "RX";
break;
default:
fc = "Unknown";
break;
}
netdev_info(vsi->netdev, "NIC Link is up %sbps, Flow Control: %s\n",
speed, fc);
}
/**
* ice_vsi_link_event - update the vsi's netdev
* @vsi: the vsi on which the link event occurred
* @link_up: whether or not the vsi needs to be set up or down
*/
static void ice_vsi_link_event(struct ice_vsi *vsi, bool link_up)
{
if (!vsi || test_bit(__ICE_DOWN, vsi->state))
return;
if (vsi->type == ICE_VSI_PF) {
if (!vsi->netdev) {
dev_dbg(&vsi->back->pdev->dev,
"vsi->netdev is not initialized!\n");
return;
}
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);
}
}
}
/**
* ice_link_event - process the link event
* @pf: pf that the link event is associated with
* @pi: port_info for the port that the link event is associated with
*
* Returns -EIO if ice_get_link_status() fails
* Returns 0 on success
*/
static int
ice_link_event(struct ice_pf *pf, struct ice_port_info *pi)
{
u8 new_link_speed, old_link_speed;
struct ice_phy_info *phy_info;
bool new_link_same_as_old;
bool new_link, old_link;
u8 lport;
u16 v;
phy_info = &pi->phy;
phy_info->link_info_old = phy_info->link_info;
/* Force ice_get_link_status() to update link info */
phy_info->get_link_info = true;
old_link = (phy_info->link_info_old.link_info & ICE_AQ_LINK_UP);
old_link_speed = phy_info->link_info_old.link_speed;
lport = pi->lport;
if (ice_get_link_status(pi, &new_link)) {
dev_dbg(&pf->pdev->dev,
"Could not get link status for port %d\n", lport);
return -EIO;
}
new_link_speed = phy_info->link_info.link_speed;
new_link_same_as_old = (new_link == old_link &&
new_link_speed == old_link_speed);
ice_for_each_vsi(pf, v) {
struct ice_vsi *vsi = pf->vsi[v];
if (!vsi || !vsi->port_info)
continue;
if (new_link_same_as_old &&
(test_bit(__ICE_DOWN, vsi->state) ||
new_link == netif_carrier_ok(vsi->netdev)))
continue;
if (vsi->port_info->lport == lport) {
ice_print_link_msg(vsi, new_link);
ice_vsi_link_event(vsi, new_link);
}
}
if (!new_link_same_as_old && pf->num_alloc_vfs)
ice_vc_notify_link_state(pf);
return 0;
}
/**
* ice_watchdog_subtask - periodic tasks not using event driven scheduling
* @pf: board private structure
*/
static void ice_watchdog_subtask(struct ice_pf *pf)
{
int i;
/* if interface is down do nothing */
if (test_bit(__ICE_DOWN, pf->state) ||
test_bit(__ICE_CFG_BUSY, pf->state))
return;
/* make sure we don't do these things too often */
if (time_before(jiffies,
pf->serv_tmr_prev + pf->serv_tmr_period))
return;
pf->serv_tmr_prev = jiffies;
/* Update the stats for active netdevs so the network stack
* can look at updated numbers whenever it cares to
*/
ice_update_pf_stats(pf);
ice_for_each_vsi(pf, i)
if (pf->vsi[i] && pf->vsi[i]->netdev)
ice_update_vsi_stats(pf->vsi[i]);
}
/**
* ice_init_link_events - enable/initialize link events
* @pi: pointer to the port_info instance
*
* Returns -EIO on failure, 0 on success
*/
static int ice_init_link_events(struct ice_port_info *pi)
{
u16 mask;
mask = ~((u16)(ICE_AQ_LINK_EVENT_UPDOWN | ICE_AQ_LINK_EVENT_MEDIA_NA |
ICE_AQ_LINK_EVENT_MODULE_QUAL_FAIL));
if (ice_aq_set_event_mask(pi->hw, pi->lport, mask, NULL)) {
dev_dbg(ice_hw_to_dev(pi->hw),
"Failed to set link event mask for port %d\n",
pi->lport);
return -EIO;
}
if (ice_aq_get_link_info(pi, true, NULL, NULL)) {
dev_dbg(ice_hw_to_dev(pi->hw),
"Failed to enable link events for port %d\n",
pi->lport);
return -EIO;
}
return 0;
}
/**
* ice_handle_link_event - handle link event via ARQ
* @pf: pf that the link event is associated with
*
* Return -EINVAL if port_info is null
* Return status on success
*/
static int ice_handle_link_event(struct ice_pf *pf)
{
struct ice_port_info *port_info;
int status;
port_info = pf->hw.port_info;
if (!port_info)
return -EINVAL;
status = ice_link_event(pf, port_info);
if (status)
dev_dbg(&pf->pdev->dev,
"Could not process link event, error %d\n", status);
return status;
}
/**
* __ice_clean_ctrlq - helper function to clean controlq rings
* @pf: ptr to struct ice_pf
* @q_type: specific Control queue type
*/
static int __ice_clean_ctrlq(struct ice_pf *pf, enum ice_ctl_q q_type)
{
struct ice_rq_event_info event;
struct ice_hw *hw = &pf->hw;
struct ice_ctl_q_info *cq;
u16 pending, i = 0;
const char *qtype;
u32 oldval, val;
/* Do not clean control queue if/when PF reset fails */
if (test_bit(__ICE_RESET_FAILED, pf->state))
return 0;
switch (q_type) {
case ICE_CTL_Q_ADMIN:
cq = &hw->adminq;
qtype = "Admin";
break;
case ICE_CTL_Q_MAILBOX:
cq = &hw->mailboxq;
qtype = "Mailbox";
break;
default:
dev_warn(&pf->pdev->dev, "Unknown control queue type 0x%x\n",
q_type);
return 0;
}
/* check for error indications - PF_xx_AxQLEN register layout for
* FW/MBX/SB are identical so just use defines for PF_FW_AxQLEN.
*/
val = rd32(hw, cq->rq.len);
if (val & (PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
PF_FW_ARQLEN_ARQCRIT_M)) {
oldval = val;
if (val & PF_FW_ARQLEN_ARQVFE_M)
dev_dbg(&pf->pdev->dev,
"%s Receive Queue VF Error detected\n", qtype);
if (val & PF_FW_ARQLEN_ARQOVFL_M) {
dev_dbg(&pf->pdev->dev,
"%s Receive Queue Overflow Error detected\n",
qtype);
}
if (val & PF_FW_ARQLEN_ARQCRIT_M)
dev_dbg(&pf->pdev->dev,
"%s Receive Queue Critical Error detected\n",
qtype);
val &= ~(PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
PF_FW_ARQLEN_ARQCRIT_M);
if (oldval != val)
wr32(hw, cq->rq.len, val);
}
val = rd32(hw, cq->sq.len);
if (val & (PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
PF_FW_ATQLEN_ATQCRIT_M)) {
oldval = val;
if (val & PF_FW_ATQLEN_ATQVFE_M)
dev_dbg(&pf->pdev->dev,
"%s Send Queue VF Error detected\n", qtype);
if (val & PF_FW_ATQLEN_ATQOVFL_M) {
dev_dbg(&pf->pdev->dev,
"%s Send Queue Overflow Error detected\n",
qtype);
}
if (val & PF_FW_ATQLEN_ATQCRIT_M)
dev_dbg(&pf->pdev->dev,
"%s Send Queue Critical Error detected\n",
qtype);
val &= ~(PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
PF_FW_ATQLEN_ATQCRIT_M);
if (oldval != val)
wr32(hw, cq->sq.len, val);
}
event.buf_len = cq->rq_buf_size;
event.msg_buf = devm_kzalloc(&pf->pdev->dev, event.buf_len,
GFP_KERNEL);
if (!event.msg_buf)
return 0;
do {
enum ice_status ret;
u16 opcode;
ret = ice_clean_rq_elem(hw, cq, &event, &pending);
if (ret == ICE_ERR_AQ_NO_WORK)
break;
if (ret) {
dev_err(&pf->pdev->dev,
"%s Receive Queue event error %d\n", qtype,
ret);
break;
}
opcode = le16_to_cpu(event.desc.opcode);
switch (opcode) {
case ice_aqc_opc_get_link_status:
if (ice_handle_link_event(pf))
dev_err(&pf->pdev->dev,
"Could not handle link event\n");
break;
case ice_mbx_opc_send_msg_to_pf:
ice_vc_process_vf_msg(pf, &event);
break;
case ice_aqc_opc_fw_logging:
ice_output_fw_log(hw, &event.desc, event.msg_buf);
break;
default:
dev_dbg(&pf->pdev->dev,
"%s Receive Queue unknown event 0x%04x ignored\n",
qtype, opcode);
break;
}
} while (pending && (i++ < ICE_DFLT_IRQ_WORK));
devm_kfree(&pf->pdev->dev, event.msg_buf);
return pending && (i == ICE_DFLT_IRQ_WORK);
}
/**
* ice_ctrlq_pending - check if there is a difference between ntc and ntu
* @hw: pointer to hardware info
* @cq: control queue information
*
* returns true if there are pending messages in a queue, false if there aren't
*/
static bool ice_ctrlq_pending(struct ice_hw *hw, struct ice_ctl_q_info *cq)
{
u16 ntu;
ntu = (u16)(rd32(hw, cq->rq.head) & cq->rq.head_mask);
return cq->rq.next_to_clean != ntu;
}
/**
* ice_clean_adminq_subtask - clean the AdminQ rings
* @pf: board private structure
*/
static void ice_clean_adminq_subtask(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
if (!test_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state))
return;
if (__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN))
return;
clear_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state);
/* There might be a situation where new messages arrive to a control
* queue between processing the last message and clearing the
* EVENT_PENDING bit. So before exiting, check queue head again (using
* ice_ctrlq_pending) and process new messages if any.
*/
if (ice_ctrlq_pending(hw, &hw->adminq))
__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN);
ice_flush(hw);
}
/**
* ice_clean_mailboxq_subtask - clean the MailboxQ rings
* @pf: board private structure
*/
static void ice_clean_mailboxq_subtask(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
if (!test_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state))
return;
if (__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX))
return;
clear_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state);
if (ice_ctrlq_pending(hw, &hw->mailboxq))
__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX);
ice_flush(hw);
}
/**
* ice_service_task_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 ice_service_task_schedule(struct ice_pf *pf)
{
if (!test_bit(__ICE_SERVICE_DIS, pf->state) &&
!test_and_set_bit(__ICE_SERVICE_SCHED, pf->state) &&
!test_bit(__ICE_NEEDS_RESTART, pf->state))
queue_work(ice_wq, &pf->serv_task);
}
/**
* ice_service_task_complete - finish up the service task
* @pf: board private structure
*/
static void ice_service_task_complete(struct ice_pf *pf)
{
WARN_ON(!test_bit(__ICE_SERVICE_SCHED, pf->state));
/* force memory (pf->state) to sync before next service task */
smp_mb__before_atomic();
clear_bit(__ICE_SERVICE_SCHED, pf->state);
}
/**
* ice_service_task_stop - stop service task and cancel works
* @pf: board private structure
*/
static void ice_service_task_stop(struct ice_pf *pf)
{
set_bit(__ICE_SERVICE_DIS, pf->state);
if (pf->serv_tmr.function)
del_timer_sync(&pf->serv_tmr);
if (pf->serv_task.func)
cancel_work_sync(&pf->serv_task);
clear_bit(__ICE_SERVICE_SCHED, pf->state);
}
/**
* ice_service_task_restart - restart service task and schedule works
* @pf: board private structure
*
* This function is needed for suspend and resume works (e.g WoL scenario)
*/
static void ice_service_task_restart(struct ice_pf *pf)
{
clear_bit(__ICE_SERVICE_DIS, pf->state);
ice_service_task_schedule(pf);
}
/**
* ice_service_timer - timer callback to schedule service task
* @t: pointer to timer_list
*/
static void ice_service_timer(struct timer_list *t)
{
struct ice_pf *pf = from_timer(pf, t, serv_tmr);
mod_timer(&pf->serv_tmr, round_jiffies(pf->serv_tmr_period + jiffies));
ice_service_task_schedule(pf);
}
/**
* ice_handle_mdd_event - handle malicious driver detect event
* @pf: pointer to the PF structure
*
* Called from service task. OICR interrupt handler indicates MDD event
*/
static void ice_handle_mdd_event(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
bool mdd_detected = false;
u32 reg;
int i;
if (!test_bit(__ICE_MDD_EVENT_PENDING, pf->state))
return;
/* find what triggered the MDD event */
reg = rd32(hw, GL_MDET_TX_PQM);
if (reg & GL_MDET_TX_PQM_VALID_M) {
u8 pf_num = (reg & GL_MDET_TX_PQM_PF_NUM_M) >>
GL_MDET_TX_PQM_PF_NUM_S;
u16 vf_num = (reg & GL_MDET_TX_PQM_VF_NUM_M) >>
GL_MDET_TX_PQM_VF_NUM_S;
u8 event = (reg & GL_MDET_TX_PQM_MAL_TYPE_M) >>
GL_MDET_TX_PQM_MAL_TYPE_S;
u16 queue = ((reg & GL_MDET_TX_PQM_QNUM_M) >>
GL_MDET_TX_PQM_QNUM_S);
if (netif_msg_tx_err(pf))
dev_info(&pf->pdev->dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
event, queue, pf_num, vf_num);
wr32(hw, GL_MDET_TX_PQM, 0xffffffff);
mdd_detected = true;
}
reg = rd32(hw, GL_MDET_TX_TCLAN);
if (reg & GL_MDET_TX_TCLAN_VALID_M) {
u8 pf_num = (reg & GL_MDET_TX_TCLAN_PF_NUM_M) >>
GL_MDET_TX_TCLAN_PF_NUM_S;
u16 vf_num = (reg & GL_MDET_TX_TCLAN_VF_NUM_M) >>
GL_MDET_TX_TCLAN_VF_NUM_S;
u8 event = (reg & GL_MDET_TX_TCLAN_MAL_TYPE_M) >>
GL_MDET_TX_TCLAN_MAL_TYPE_S;
u16 queue = ((reg & GL_MDET_TX_TCLAN_QNUM_M) >>
GL_MDET_TX_TCLAN_QNUM_S);
if (netif_msg_rx_err(pf))
dev_info(&pf->pdev->dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
event, queue, pf_num, vf_num);
wr32(hw, GL_MDET_TX_TCLAN, 0xffffffff);
mdd_detected = true;
}
reg = rd32(hw, GL_MDET_RX);
if (reg & GL_MDET_RX_VALID_M) {
u8 pf_num = (reg & GL_MDET_RX_PF_NUM_M) >>
GL_MDET_RX_PF_NUM_S;
u16 vf_num = (reg & GL_MDET_RX_VF_NUM_M) >>
GL_MDET_RX_VF_NUM_S;
u8 event = (reg & GL_MDET_RX_MAL_TYPE_M) >>
GL_MDET_RX_MAL_TYPE_S;
u16 queue = ((reg & GL_MDET_RX_QNUM_M) >>
GL_MDET_RX_QNUM_S);
if (netif_msg_rx_err(pf))
dev_info(&pf->pdev->dev, "Malicious Driver Detection event %d on RX queue %d PF# %d VF# %d\n",
event, queue, pf_num, vf_num);
wr32(hw, GL_MDET_RX, 0xffffffff);
mdd_detected = true;
}
if (mdd_detected) {
bool pf_mdd_detected = false;
reg = rd32(hw, PF_MDET_TX_PQM);
if (reg & PF_MDET_TX_PQM_VALID_M) {
wr32(hw, PF_MDET_TX_PQM, 0xFFFF);
dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
pf_mdd_detected = true;
}
reg = rd32(hw, PF_MDET_TX_TCLAN);
if (reg & PF_MDET_TX_TCLAN_VALID_M) {
wr32(hw, PF_MDET_TX_TCLAN, 0xFFFF);
dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
pf_mdd_detected = true;
}
reg = rd32(hw, PF_MDET_RX);
if (reg & PF_MDET_RX_VALID_M) {
wr32(hw, PF_MDET_RX, 0xFFFF);
dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
pf_mdd_detected = true;
}
/* Queue belongs to the PF initiate a reset */
if (pf_mdd_detected) {
set_bit(__ICE_NEEDS_RESTART, pf->state);
ice_service_task_schedule(pf);
}
}
/* see if one of the VFs needs to be reset */
for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
struct ice_vf *vf = &pf->vf[i];
reg = rd32(hw, VP_MDET_TX_PQM(i));
if (reg & VP_MDET_TX_PQM_VALID_M) {
wr32(hw, VP_MDET_TX_PQM(i), 0xFFFF);
vf->num_mdd_events++;
dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
i);
}
reg = rd32(hw, VP_MDET_TX_TCLAN(i));
if (reg & VP_MDET_TX_TCLAN_VALID_M) {
wr32(hw, VP_MDET_TX_TCLAN(i), 0xFFFF);
vf->num_mdd_events++;
dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
i);
}
reg = rd32(hw, VP_MDET_TX_TDPU(i));
if (reg & VP_MDET_TX_TDPU_VALID_M) {
wr32(hw, VP_MDET_TX_TDPU(i), 0xFFFF);
vf->num_mdd_events++;
dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
i);
}
reg = rd32(hw, VP_MDET_RX(i));
if (reg & VP_MDET_RX_VALID_M) {
wr32(hw, VP_MDET_RX(i), 0xFFFF);
vf->num_mdd_events++;
dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
i);
}
if (vf->num_mdd_events > ICE_DFLT_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(ICE_VF_STATE_DIS, vf->vf_states);
}
}
/* re-enable MDD interrupt cause */
clear_bit(__ICE_MDD_EVENT_PENDING, pf->state);
reg = rd32(hw, PFINT_OICR_ENA);
reg |= PFINT_OICR_MAL_DETECT_M;
wr32(hw, PFINT_OICR_ENA, reg);
ice_flush(hw);
}
/**
* ice_service_task - manage and run subtasks
* @work: pointer to work_struct contained by the PF struct
*/
static void ice_service_task(struct work_struct *work)
{
struct ice_pf *pf = container_of(work, struct ice_pf, serv_task);
unsigned long start_time = jiffies;
/* subtasks */
/* process reset requests first */
ice_reset_subtask(pf);
/* bail if a reset/recovery cycle is pending or rebuild failed */
if (ice_is_reset_in_progress(pf->state) ||
test_bit(__ICE_SUSPENDED, pf->state) ||
test_bit(__ICE_NEEDS_RESTART, pf->state)) {
ice_service_task_complete(pf);
return;
}
ice_check_for_hang_subtask(pf);
ice_sync_fltr_subtask(pf);
ice_handle_mdd_event(pf);
ice_process_vflr_event(pf);
ice_watchdog_subtask(pf);
ice_clean_adminq_subtask(pf);
ice_clean_mailboxq_subtask(pf);
/* Clear __ICE_SERVICE_SCHED flag to allow scheduling next event */
ice_service_task_complete(pf);
/* If the tasks have taken longer than one service timer period
* or there is more work to be done, reset the service timer to
* schedule the service task now.
*/
if (time_after(jiffies, (start_time + pf->serv_tmr_period)) ||
test_bit(__ICE_MDD_EVENT_PENDING, pf->state) ||
test_bit(__ICE_VFLR_EVENT_PENDING, pf->state) ||
test_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state) ||
test_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state))
mod_timer(&pf->serv_tmr, jiffies);
}
/**
* ice_set_ctrlq_len - helper function to set controlq length
* @hw: pointer to the hw instance
*/
static void ice_set_ctrlq_len(struct ice_hw *hw)
{
hw->adminq.num_rq_entries = ICE_AQ_LEN;
hw->adminq.num_sq_entries = ICE_AQ_LEN;
hw->adminq.rq_buf_size = ICE_AQ_MAX_BUF_LEN;
hw->adminq.sq_buf_size = ICE_AQ_MAX_BUF_LEN;
hw->mailboxq.num_rq_entries = ICE_MBXQ_LEN;
hw->mailboxq.num_sq_entries = ICE_MBXQ_LEN;
hw->mailboxq.rq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
hw->mailboxq.sq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
}
/**
* ice_irq_affinity_notify - Callback for affinity changes
* @notify: context as to what irq was changed
* @mask: the new affinity mask
*
* This is a callback function used by the irq_set_affinity_notifier function
* so that we may register to receive changes to the irq affinity masks.
*/
static void
ice_irq_affinity_notify(struct irq_affinity_notify *notify,
const cpumask_t *mask)
{
struct ice_q_vector *q_vector =
container_of(notify, struct ice_q_vector, affinity_notify);
cpumask_copy(&q_vector->affinity_mask, mask);
}
/**
* ice_irq_affinity_release - Callback for affinity notifier release
* @ref: internal core kernel usage
*
* This is a callback function used by the irq_set_affinity_notifier function
* to inform the current notification subscriber that they will no longer
* receive notifications.
*/
static void ice_irq_affinity_release(struct kref __always_unused *ref) {}
/**
* ice_vsi_ena_irq - Enable IRQ for the given VSI
* @vsi: the VSI being configured
*/
static int ice_vsi_ena_irq(struct ice_vsi *vsi)
{
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags)) {
int i;
for (i = 0; i < vsi->num_q_vectors; i++)
ice_irq_dynamic_ena(hw, vsi, vsi->q_vectors[i]);
}
ice_flush(hw);
return 0;
}
/**
* ice_vsi_req_irq_msix - get MSI-X vectors from the OS for the VSI
* @vsi: the VSI being configured
* @basename: name for the vector
*/
static int ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename)
{
int q_vectors = vsi->num_q_vectors;
struct ice_pf *pf = vsi->back;
int base = vsi->sw_base_vector;
int rx_int_idx = 0;
int tx_int_idx = 0;
int vector, err;
int irq_num;
for (vector = 0; vector < q_vectors; vector++) {
struct ice_q_vector *q_vector = vsi->q_vectors[vector];
irq_num = pf->msix_entries[base + vector].vector;
if (q_vector->tx.ring && q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "TxRx", rx_int_idx++);
tx_int_idx++;
} else if (q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "rx", rx_int_idx++);
} else if (q_vector->tx.ring) {
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 = devm_request_irq(&pf->pdev->dev, irq_num,
vsi->irq_handler, 0,
q_vector->name, q_vector);
if (err) {
netdev_err(vsi->netdev,
"MSIX request_irq failed, error: %d\n", err);
goto free_q_irqs;
}
/* register for affinity change notifications */
q_vector->affinity_notify.notify = ice_irq_affinity_notify;
q_vector->affinity_notify.release = ice_irq_affinity_release;
irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
/* assign the mask for this irq */
irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
}
vsi->irqs_ready = true;
return 0;
free_q_irqs:
while (vector) {
vector--;
irq_num = pf->msix_entries[base + vector].vector,
irq_set_affinity_notifier(irq_num, NULL);
irq_set_affinity_hint(irq_num, NULL);
devm_free_irq(&pf->pdev->dev, irq_num, &vsi->q_vectors[vector]);
}
return err;
}
/**
* ice_ena_misc_vector - enable the non-queue interrupts
* @pf: board private structure
*/
static void ice_ena_misc_vector(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
u32 val;
/* clear things first */
wr32(hw, PFINT_OICR_ENA, 0); /* disable all */
rd32(hw, PFINT_OICR); /* read to clear */
val = (PFINT_OICR_ECC_ERR_M |
PFINT_OICR_MAL_DETECT_M |
PFINT_OICR_GRST_M |
PFINT_OICR_PCI_EXCEPTION_M |
PFINT_OICR_VFLR_M |
PFINT_OICR_HMC_ERR_M |
PFINT_OICR_PE_CRITERR_M);
wr32(hw, PFINT_OICR_ENA, val);
/* SW_ITR_IDX = 0, but don't change INTENA */
wr32(hw, GLINT_DYN_CTL(pf->hw_oicr_idx),
GLINT_DYN_CTL_SW_ITR_INDX_M | GLINT_DYN_CTL_INTENA_MSK_M);
}
/**
* ice_misc_intr - misc interrupt handler
* @irq: interrupt number
* @data: pointer to a q_vector
*/
static irqreturn_t ice_misc_intr(int __always_unused irq, void *data)
{
struct ice_pf *pf = (struct ice_pf *)data;
struct ice_hw *hw = &pf->hw;
irqreturn_t ret = IRQ_NONE;
u32 oicr, ena_mask;
set_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state);
set_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state);
oicr = rd32(hw, PFINT_OICR);
ena_mask = rd32(hw, PFINT_OICR_ENA);
if (oicr & PFINT_OICR_MAL_DETECT_M) {
ena_mask &= ~PFINT_OICR_MAL_DETECT_M;
set_bit(__ICE_MDD_EVENT_PENDING, pf->state);
}
if (oicr & PFINT_OICR_VFLR_M) {
ena_mask &= ~PFINT_OICR_VFLR_M;
set_bit(__ICE_VFLR_EVENT_PENDING, pf->state);
}
if (oicr & PFINT_OICR_GRST_M) {
u32 reset;
/* we have a reset warning */
ena_mask &= ~PFINT_OICR_GRST_M;
reset = (rd32(hw, GLGEN_RSTAT) & GLGEN_RSTAT_RESET_TYPE_M) >>
GLGEN_RSTAT_RESET_TYPE_S;
if (reset == ICE_RESET_CORER)
pf->corer_count++;
else if (reset == ICE_RESET_GLOBR)
pf->globr_count++;
else if (reset == ICE_RESET_EMPR)
pf->empr_count++;
else
dev_dbg(&pf->pdev->dev, "Invalid reset type %d\n",
reset);
/* If a reset cycle isn't already in progress, we set a bit in
* pf->state so that the service task can start a reset/rebuild.
* We also make note of which reset happened so that peer
* devices/drivers can be informed.
*/
if (!test_and_set_bit(__ICE_RESET_OICR_RECV, pf->state)) {
if (reset == ICE_RESET_CORER)
set_bit(__ICE_CORER_RECV, pf->state);
else if (reset == ICE_RESET_GLOBR)
set_bit(__ICE_GLOBR_RECV, pf->state);
else
set_bit(__ICE_EMPR_RECV, pf->state);
/* There are couple of different bits at play here.
* hw->reset_ongoing indicates whether the hardware is
* in reset. This is set to true when a reset interrupt
* is received and set back to false after the driver
* has determined that the hardware is out of reset.
*
* __ICE_RESET_OICR_RECV in pf->state indicates
* that a post reset rebuild is required before the
* driver is operational again. This is set above.
*
* As this is the start of the reset/rebuild cycle, set
* both to indicate that.
*/
hw->reset_ongoing = true;
}
}
if (oicr & PFINT_OICR_HMC_ERR_M) {
ena_mask &= ~PFINT_OICR_HMC_ERR_M;
dev_dbg(&pf->pdev->dev,
"HMC Error interrupt - info 0x%x, data 0x%x\n",
rd32(hw, PFHMC_ERRORINFO),
rd32(hw, PFHMC_ERRORDATA));
}
/* Report and mask off any remaining unexpected interrupts */
oicr &= ena_mask;
if (oicr) {
dev_dbg(&pf->pdev->dev, "unhandled interrupt oicr=0x%08x\n",
oicr);
/* If a critical error is pending there is no choice but to
* reset the device.
*/
if (oicr & (PFINT_OICR_PE_CRITERR_M |
PFINT_OICR_PCI_EXCEPTION_M |
PFINT_OICR_ECC_ERR_M)) {
set_bit(__ICE_PFR_REQ, pf->state);
ice_service_task_schedule(pf);
}
ena_mask &= ~oicr;
}
ret = IRQ_HANDLED;
/* re-enable interrupt causes that are not handled during this pass */
wr32(hw, PFINT_OICR_ENA, ena_mask);
if (!test_bit(__ICE_DOWN, pf->state)) {
ice_service_task_schedule(pf);
ice_irq_dynamic_ena(hw, NULL, NULL);
}
return ret;
}
/**
* ice_dis_ctrlq_interrupts - disable control queue interrupts
* @hw: pointer to HW structure
*/
static void ice_dis_ctrlq_interrupts(struct ice_hw *hw)
{
/* disable Admin queue Interrupt causes */
wr32(hw, PFINT_FW_CTL,
rd32(hw, PFINT_FW_CTL) & ~PFINT_FW_CTL_CAUSE_ENA_M);
/* disable Mailbox queue Interrupt causes */
wr32(hw, PFINT_MBX_CTL,
rd32(hw, PFINT_MBX_CTL) & ~PFINT_MBX_CTL_CAUSE_ENA_M);
/* disable Control queue Interrupt causes */
wr32(hw, PFINT_OICR_CTL,
rd32(hw, PFINT_OICR_CTL) & ~PFINT_OICR_CTL_CAUSE_ENA_M);
ice_flush(hw);
}
/**
* ice_free_irq_msix_misc - Unroll misc vector setup
* @pf: board private structure
*/
static void ice_free_irq_msix_misc(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
ice_dis_ctrlq_interrupts(hw);
/* disable OICR interrupt */
wr32(hw, PFINT_OICR_ENA, 0);
ice_flush(hw);
if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags) && pf->msix_entries) {
synchronize_irq(pf->msix_entries[pf->sw_oicr_idx].vector);
devm_free_irq(&pf->pdev->dev,
pf->msix_entries[pf->sw_oicr_idx].vector, pf);
}
pf->num_avail_sw_msix += 1;
ice_free_res(pf->sw_irq_tracker, pf->sw_oicr_idx, ICE_RES_MISC_VEC_ID);
pf->num_avail_hw_msix += 1;
ice_free_res(pf->hw_irq_tracker, pf->hw_oicr_idx, ICE_RES_MISC_VEC_ID);
}
/**
* ice_ena_ctrlq_interrupts - enable control queue interrupts
* @hw: pointer to HW structure
* @v_idx: HW vector index to associate the control queue interrupts with
*/
static void ice_ena_ctrlq_interrupts(struct ice_hw *hw, u16 v_idx)
{
u32 val;
val = ((v_idx & PFINT_OICR_CTL_MSIX_INDX_M) |
PFINT_OICR_CTL_CAUSE_ENA_M);
wr32(hw, PFINT_OICR_CTL, val);
/* enable Admin queue Interrupt causes */
val = ((v_idx & PFINT_FW_CTL_MSIX_INDX_M) |
PFINT_FW_CTL_CAUSE_ENA_M);
wr32(hw, PFINT_FW_CTL, val);
/* enable Mailbox queue Interrupt causes */
val = ((v_idx & PFINT_MBX_CTL_MSIX_INDX_M) |
PFINT_MBX_CTL_CAUSE_ENA_M);
wr32(hw, PFINT_MBX_CTL, val);
ice_flush(hw);
}
/**
* ice_req_irq_msix_misc - 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 ice_req_irq_msix_misc(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
int oicr_idx, err = 0;
if (!pf->int_name[0])
snprintf(pf->int_name, sizeof(pf->int_name) - 1, "%s-%s:misc",
dev_driver_string(&pf->pdev->dev),
dev_name(&pf->pdev->dev));
/* Do not request IRQ but do enable OICR interrupt since settings are
* lost during reset. Note that this function is called only during
* rebuild path and not while reset is in progress.
*/
if (ice_is_reset_in_progress(pf->state))
goto skip_req_irq;
/* reserve one vector in sw_irq_tracker for misc interrupts */
oicr_idx = ice_get_res(pf, pf->sw_irq_tracker, 1, ICE_RES_MISC_VEC_ID);
if (oicr_idx < 0)
return oicr_idx;
pf->num_avail_sw_msix -= 1;
pf->sw_oicr_idx = oicr_idx;
/* reserve one vector in hw_irq_tracker for misc interrupts */
oicr_idx = ice_get_res(pf, pf->hw_irq_tracker, 1, ICE_RES_MISC_VEC_ID);
if (oicr_idx < 0) {
ice_free_res(pf->sw_irq_tracker, 1, ICE_RES_MISC_VEC_ID);
pf->num_avail_sw_msix += 1;
return oicr_idx;
}
pf->num_avail_hw_msix -= 1;
pf->hw_oicr_idx = oicr_idx;
err = devm_request_irq(&pf->pdev->dev,
pf->msix_entries[pf->sw_oicr_idx].vector,
ice_misc_intr, 0, pf->int_name, pf);
if (err) {
dev_err(&pf->pdev->dev,
"devm_request_irq for %s failed: %d\n",
pf->int_name, err);
ice_free_res(pf->sw_irq_tracker, 1, ICE_RES_MISC_VEC_ID);
pf->num_avail_sw_msix += 1;
ice_free_res(pf->hw_irq_tracker, 1, ICE_RES_MISC_VEC_ID);
pf->num_avail_hw_msix += 1;
return err;
}
skip_req_irq:
ice_ena_misc_vector(pf);
ice_ena_ctrlq_interrupts(hw, pf->hw_oicr_idx);
wr32(hw, GLINT_ITR(ICE_RX_ITR, pf->hw_oicr_idx),
ITR_REG_ALIGN(ICE_ITR_8K) >> ICE_ITR_GRAN_S);
ice_flush(hw);
ice_irq_dynamic_ena(hw, NULL, NULL);
return 0;
}
/**
* ice_napi_del - Remove NAPI handler for the VSI
* @vsi: VSI for which NAPI handler is to be removed
*/
void ice_napi_del(struct ice_vsi *vsi)
{
int v_idx;
if (!vsi->netdev)
return;
for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
netif_napi_del(&vsi->q_vectors[v_idx]->napi);
}
/**
* ice_napi_add - register NAPI handler for the VSI
* @vsi: VSI for which NAPI handler is to be registered
*
* This function is only called in the driver's load path. Registering the NAPI
* handler is done in ice_vsi_alloc_q_vector() for all other cases (i.e. resume,
* reset/rebuild, etc.)
*/
static void ice_napi_add(struct ice_vsi *vsi)
{
int v_idx;
if (!vsi->netdev)
return;
for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
netif_napi_add(vsi->netdev, &vsi->q_vectors[v_idx]->napi,
ice_napi_poll, NAPI_POLL_WEIGHT);
}
/**
* ice_cfg_netdev - Allocate, configure and register a netdev
* @vsi: the VSI associated with the new netdev
*
* Returns 0 on success, negative value on failure
*/
static int ice_cfg_netdev(struct ice_vsi *vsi)
{
netdev_features_t csumo_features;
netdev_features_t vlano_features;
netdev_features_t dflt_features;
netdev_features_t tso_features;
struct ice_netdev_priv *np;
struct net_device *netdev;
u8 mac_addr[ETH_ALEN];
int err;
netdev = alloc_etherdev_mqs(sizeof(*np), vsi->alloc_txq,
vsi->alloc_rxq);
if (!netdev)
return -ENOMEM;
vsi->netdev = netdev;
np = netdev_priv(netdev);
np->vsi = vsi;
dflt_features = NETIF_F_SG |
NETIF_F_HIGHDMA |
NETIF_F_RXHASH;
csumo_features = NETIF_F_RXCSUM |
NETIF_F_IP_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_IPV6_CSUM;
vlano_features = NETIF_F_HW_VLAN_CTAG_FILTER |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX;
tso_features = NETIF_F_TSO;
/* set features that user can change */
netdev->hw_features = dflt_features | csumo_features |
vlano_features | tso_features;
/* enable features */
netdev->features |= netdev->hw_features;
/* encap and VLAN devices inherit default, csumo and tso features */
netdev->hw_enc_features |= dflt_features | csumo_features |
tso_features;
netdev->vlan_features |= dflt_features | csumo_features |
tso_features;
if (vsi->type == ICE_VSI_PF) {
SET_NETDEV_DEV(netdev, &vsi->back->pdev->dev);
ether_addr_copy(mac_addr, vsi->port_info->mac.perm_addr);
ether_addr_copy(netdev->dev_addr, mac_addr);
ether_addr_copy(netdev->perm_addr, mac_addr);
}
netdev->priv_flags |= IFF_UNICAST_FLT;
/* assign netdev_ops */
netdev->netdev_ops = &ice_netdev_ops;
/* setup watchdog timeout value to be 5 second */
netdev->watchdog_timeo = 5 * HZ;
ice_set_ethtool_ops(netdev);
netdev->min_mtu = ETH_MIN_MTU;
netdev->max_mtu = ICE_MAX_MTU;
err = register_netdev(vsi->netdev);
if (err)
return err;
netif_carrier_off(vsi->netdev);
/* make sure transmit queues start off as stopped */
netif_tx_stop_all_queues(vsi->netdev);
return 0;
}
/**
* ice_fill_rss_lut - Fill the RSS lookup table with default values
* @lut: Lookup table
* @rss_table_size: Lookup table size
* @rss_size: Range of queue number for hashing
*/
void ice_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size)
{
u16 i;
for (i = 0; i < rss_table_size; i++)
lut[i] = i % rss_size;
}
/**
* ice_pf_vsi_setup - Set up a PF VSI
* @pf: board private structure
* @pi: pointer to the port_info instance
*
* Returns pointer to the successfully allocated VSI sw struct on success,
* otherwise returns NULL on failure.
*/
static struct ice_vsi *
ice_pf_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
{
return ice_vsi_setup(pf, pi, ICE_VSI_PF, ICE_INVAL_VFID);
}
/**
* ice_vlan_rx_add_vid - Add a vlan id filter to HW offload
* @netdev: network interface to be adjusted
* @proto: unused protocol
* @vid: vlan id to be added
*
* net_device_ops implementation for adding vlan ids
*/
static int
ice_vlan_rx_add_vid(struct net_device *netdev, __always_unused __be16 proto,
u16 vid)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
int ret;
if (vid >= VLAN_N_VID) {
netdev_err(netdev, "VLAN id requested %d is out of range %d\n",
vid, VLAN_N_VID);
return -EINVAL;
}
if (vsi->info.pvid)
return -EINVAL;
/* Enable VLAN pruning when VLAN 0 is added */
if (unlikely(!vid)) {
ret = ice_cfg_vlan_pruning(vsi, true, false);
if (ret)
return ret;
}
/* Add all VLAN ids including 0 to the switch filter. VLAN id 0 is
* needed to continue allowing all untagged packets since VLAN prune
* list is applied to all packets by the switch
*/
ret = ice_vsi_add_vlan(vsi, vid);
if (!ret) {
vsi->vlan_ena = true;
set_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
}
return ret;
}
/**
* ice_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
* @netdev: network interface to be adjusted
* @proto: unused protocol
* @vid: vlan id to be removed
*
* net_device_ops implementation for removing vlan ids
*/
static int
ice_vlan_rx_kill_vid(struct net_device *netdev, __always_unused __be16 proto,
u16 vid)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
int ret;
if (vsi->info.pvid)
return -EINVAL;
/* Make sure ice_vsi_kill_vlan is successful before updating VLAN
* information
*/
ret = ice_vsi_kill_vlan(vsi, vid);
if (ret)
return ret;
/* Disable VLAN pruning when VLAN 0 is removed */
if (unlikely(!vid))
ret = ice_cfg_vlan_pruning(vsi, false, false);
vsi->vlan_ena = false;
set_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
return ret;
}
/**
* ice_setup_pf_sw - Setup the HW switch on startup or after reset
* @pf: board private structure
*
* Returns 0 on success, negative value on failure
*/
static int ice_setup_pf_sw(struct ice_pf *pf)
{
LIST_HEAD(tmp_add_list);
u8 broadcast[ETH_ALEN];
struct ice_vsi *vsi;
int status = 0;
if (ice_is_reset_in_progress(pf->state))
return -EBUSY;
vsi = ice_pf_vsi_setup(pf, pf->hw.port_info);
if (!vsi) {
status = -ENOMEM;
goto unroll_vsi_setup;
}
status = ice_cfg_netdev(vsi);
if (status) {
status = -ENODEV;
goto unroll_vsi_setup;
}
/* registering the NAPI handler requires both the queues and
* netdev to be created, which are done in ice_pf_vsi_setup()
* and ice_cfg_netdev() respectively
*/
ice_napi_add(vsi);
/* To add a MAC filter, first add the MAC to a list and then
* pass the list to ice_add_mac.
*/
/* Add a unicast MAC filter so the VSI can get its packets */
status = ice_add_mac_to_list(vsi, &tmp_add_list,
vsi->port_info->mac.perm_addr);
if (status)
goto unroll_napi_add;
/* VSI needs to receive broadcast traffic, so add the broadcast
* MAC address to the list as well.
*/
eth_broadcast_addr(broadcast);
status = ice_add_mac_to_list(vsi, &tmp_add_list, broadcast);
if (status)
goto free_mac_list;
/* program MAC filters for entries in tmp_add_list */
status = ice_add_mac(&pf->hw, &tmp_add_list);
if (status) {
dev_err(&pf->pdev->dev, "Could not add MAC filters\n");
status = -ENOMEM;
goto free_mac_list;
}
ice_free_fltr_list(&pf->pdev->dev, &tmp_add_list);
return status;
free_mac_list:
ice_free_fltr_list(&pf->pdev->dev, &tmp_add_list);
unroll_napi_add:
if (vsi) {
ice_napi_del(vsi);
if (vsi->netdev) {
if (vsi->netdev->reg_state == NETREG_REGISTERED)
unregister_netdev(vsi->netdev);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
}
unroll_vsi_setup:
if (vsi) {
ice_vsi_free_q_vectors(vsi);
ice_vsi_delete(vsi);
ice_vsi_put_qs(vsi);
pf->q_left_tx += vsi->alloc_txq;
pf->q_left_rx += vsi->alloc_rxq;
ice_vsi_clear(vsi);
}
return status;
}
/**
* ice_determine_q_usage - Calculate queue distribution
* @pf: board private structure
*
* Return -ENOMEM if we don't get enough queues for all ports
*/
static void ice_determine_q_usage(struct ice_pf *pf)
{
u16 q_left_tx, q_left_rx;
q_left_tx = pf->hw.func_caps.common_cap.num_txq;
q_left_rx = pf->hw.func_caps.common_cap.num_rxq;
pf->num_lan_tx = min_t(int, q_left_tx, num_online_cpus());
/* only 1 Rx queue unless RSS is enabled */
if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags))
pf->num_lan_rx = 1;
else
pf->num_lan_rx = min_t(int, q_left_rx, num_online_cpus());
pf->q_left_tx = q_left_tx - pf->num_lan_tx;
pf->q_left_rx = q_left_rx - pf->num_lan_rx;
}
/**
* ice_deinit_pf - Unrolls initialziations done by ice_init_pf
* @pf: board private structure to initialize
*/
static void ice_deinit_pf(struct ice_pf *pf)
{
ice_service_task_stop(pf);
mutex_destroy(&pf->sw_mutex);
mutex_destroy(&pf->avail_q_mutex);
}
/**
* ice_init_pf - Initialize general software structures (struct ice_pf)
* @pf: board private structure to initialize
*/
static void ice_init_pf(struct ice_pf *pf)
{
bitmap_zero(pf->flags, ICE_PF_FLAGS_NBITS);
set_bit(ICE_FLAG_MSIX_ENA, pf->flags);
#ifdef CONFIG_PCI_IOV
if (pf->hw.func_caps.common_cap.sr_iov_1_1) {
struct ice_hw *hw = &pf->hw;
set_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags);
pf->num_vfs_supported = min_t(int, hw->func_caps.num_allocd_vfs,
ICE_MAX_VF_COUNT);
}
#endif /* CONFIG_PCI_IOV */
mutex_init(&pf->sw_mutex);
mutex_init(&pf->avail_q_mutex);
/* Clear avail_[t|r]x_qs bitmaps (set all to avail) */
mutex_lock(&pf->avail_q_mutex);
bitmap_zero(pf->avail_txqs, ICE_MAX_TXQS);
bitmap_zero(pf->avail_rxqs, ICE_MAX_RXQS);
mutex_unlock(&pf->avail_q_mutex);
if (pf->hw.func_caps.common_cap.rss_table_size)
set_bit(ICE_FLAG_RSS_ENA, pf->flags);
/* setup service timer and periodic service task */
timer_setup(&pf->serv_tmr, ice_service_timer, 0);
pf->serv_tmr_period = HZ;
INIT_WORK(&pf->serv_task, ice_service_task);
clear_bit(__ICE_SERVICE_SCHED, pf->state);
}
/**
* ice_ena_msix_range - Request a range of MSIX vectors from the OS
* @pf: board private structure
*
* compute the number of MSIX vectors required (v_budget) and request from
* the OS. Return the number of vectors reserved or negative on failure
*/
static int ice_ena_msix_range(struct ice_pf *pf)
{
int v_left, v_actual, v_budget = 0;
int needed, err, i;
v_left = pf->hw.func_caps.common_cap.num_msix_vectors;
/* reserve one vector for miscellaneous handler */
needed = 1;
v_budget += needed;
v_left -= needed;
/* reserve vectors for LAN traffic */
pf->num_lan_msix = min_t(int, num_online_cpus(), v_left);
v_budget += pf->num_lan_msix;
v_left -= pf->num_lan_msix;
pf->msix_entries = devm_kcalloc(&pf->pdev->dev, v_budget,
sizeof(*pf->msix_entries), GFP_KERNEL);
if (!pf->msix_entries) {
err = -ENOMEM;
goto exit_err;
}
for (i = 0; i < v_budget; i++)
pf->msix_entries[i].entry = i;
/* actually reserve the vectors */
v_actual = pci_enable_msix_range(pf->pdev, pf->msix_entries,
ICE_MIN_MSIX, v_budget);
if (v_actual < 0) {
dev_err(&pf->pdev->dev, "unable to reserve MSI-X vectors\n");
err = v_actual;
goto msix_err;
}
if (v_actual < v_budget) {
dev_warn(&pf->pdev->dev,
"not enough vectors. requested = %d, obtained = %d\n",
v_budget, v_actual);
if (v_actual >= (pf->num_lan_msix + 1)) {
pf->num_avail_sw_msix = v_actual -
(pf->num_lan_msix + 1);
} else if (v_actual >= 2) {
pf->num_lan_msix = 1;
pf->num_avail_sw_msix = v_actual - 2;
} else {
pci_disable_msix(pf->pdev);
err = -ERANGE;
goto msix_err;
}
}
return v_actual;
msix_err:
devm_kfree(&pf->pdev->dev, pf->msix_entries);
goto exit_err;
exit_err:
pf->num_lan_msix = 0;
clear_bit(ICE_FLAG_MSIX_ENA, pf->flags);
return err;
}
/**
* ice_dis_msix - Disable MSI-X interrupt setup in OS
* @pf: board private structure
*/
static void ice_dis_msix(struct ice_pf *pf)
{
pci_disable_msix(pf->pdev);
devm_kfree(&pf->pdev->dev, pf->msix_entries);
pf->msix_entries = NULL;
clear_bit(ICE_FLAG_MSIX_ENA, pf->flags);
}
/**
* ice_clear_interrupt_scheme - Undo things done by ice_init_interrupt_scheme
* @pf: board private structure
*/
static void ice_clear_interrupt_scheme(struct ice_pf *pf)
{
if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags))
ice_dis_msix(pf);
if (pf->sw_irq_tracker) {
devm_kfree(&pf->pdev->dev, pf->sw_irq_tracker);
pf->sw_irq_tracker = NULL;
}
if (pf->hw_irq_tracker) {
devm_kfree(&pf->pdev->dev, pf->hw_irq_tracker);
pf->hw_irq_tracker = NULL;
}
}
/**
* ice_init_interrupt_scheme - Determine proper interrupt scheme
* @pf: board private structure to initialize
*/
static int ice_init_interrupt_scheme(struct ice_pf *pf)
{
int vectors = 0, hw_vectors = 0;
if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags))
vectors = ice_ena_msix_range(pf);
else
return -ENODEV;
if (vectors < 0)
return vectors;
/* set up vector assignment tracking */
pf->sw_irq_tracker =
devm_kzalloc(&pf->pdev->dev, sizeof(*pf->sw_irq_tracker) +
(sizeof(u16) * vectors), GFP_KERNEL);
if (!pf->sw_irq_tracker) {
ice_dis_msix(pf);
return -ENOMEM;
}
/* populate SW interrupts pool with number of OS granted IRQs. */
pf->num_avail_sw_msix = vectors;
pf->sw_irq_tracker->num_entries = vectors;
/* set up HW vector assignment tracking */
hw_vectors = pf->hw.func_caps.common_cap.num_msix_vectors;
pf->hw_irq_tracker =
devm_kzalloc(&pf->pdev->dev, sizeof(*pf->hw_irq_tracker) +
(sizeof(u16) * hw_vectors), GFP_KERNEL);
if (!pf->hw_irq_tracker) {
ice_clear_interrupt_scheme(pf);
return -ENOMEM;
}
/* populate HW interrupts pool with number of HW supported irqs. */
pf->num_avail_hw_msix = hw_vectors;
pf->hw_irq_tracker->num_entries = hw_vectors;
return 0;
}
/**
* ice_verify_cacheline_size - verify driver's assumption of 64 Byte cache lines
* @pf: pointer to the PF structure
*
* There is no error returned here because the driver should be able to handle
* 128 Byte cache lines, so we only print a warning in case issues are seen,
* specifically with Tx.
*/
static void ice_verify_cacheline_size(struct ice_pf *pf)
{
if (rd32(&pf->hw, GLPCI_CNF2) & GLPCI_CNF2_CACHELINE_SIZE_M)
dev_warn(&pf->pdev->dev,
"%d Byte cache line assumption is invalid, driver may have Tx timeouts!\n",
ICE_CACHE_LINE_BYTES);
}
/**
* ice_probe - Device initialization routine
* @pdev: PCI device information struct
* @ent: entry in ice_pci_tbl
*
* Returns 0 on success, negative on failure
*/
static int
ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
{
struct device *dev = &pdev->dev;
struct ice_pf *pf;
struct ice_hw *hw;
int err;
/* this driver uses devres, see Documentation/driver-model/devres.txt */
err = pcim_enable_device(pdev);
if (err)
return err;
err = pcim_iomap_regions(pdev, BIT(ICE_BAR0), pci_name(pdev));
if (err) {
dev_err(dev, "BAR0 I/O map error %d\n", err);
return err;
}
pf = devm_kzalloc(dev, sizeof(*pf), GFP_KERNEL);
if (!pf)
return -ENOMEM;
/* set up for high or low dma */
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
if (err)
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (err) {
dev_err(dev, "DMA configuration failed: 0x%x\n", err);
return err;
}
pci_enable_pcie_error_reporting(pdev);
pci_set_master(pdev);
pf->pdev = pdev;
pci_set_drvdata(pdev, pf);
set_bit(__ICE_DOWN, pf->state);
/* Disable service task until DOWN bit is cleared */
set_bit(__ICE_SERVICE_DIS, pf->state);
hw = &pf->hw;
hw->hw_addr = pcim_iomap_table(pdev)[ICE_BAR0];
hw->back = pf;
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);
ice_set_ctrlq_len(hw);
pf->msg_enable = netif_msg_init(debug, ICE_DFLT_NETIF_M);
#ifndef CONFIG_DYNAMIC_DEBUG
if (debug < -1)
hw->debug_mask = debug;
#endif
err = ice_init_hw(hw);
if (err) {
dev_err(dev, "ice_init_hw failed: %d\n", err);
err = -EIO;
goto err_exit_unroll;
}
dev_info(dev, "firmware %d.%d.%05d api %d.%d\n",
hw->fw_maj_ver, hw->fw_min_ver, hw->fw_build,
hw->api_maj_ver, hw->api_min_ver);
ice_init_pf(pf);
ice_determine_q_usage(pf);
pf->num_alloc_vsi = hw->func_caps.guar_num_vsi;
if (!pf->num_alloc_vsi) {
err = -EIO;
goto err_init_pf_unroll;
}
pf->vsi = devm_kcalloc(dev, pf->num_alloc_vsi, sizeof(*pf->vsi),
GFP_KERNEL);
if (!pf->vsi) {
err = -ENOMEM;
goto err_init_pf_unroll;
}
err = ice_init_interrupt_scheme(pf);
if (err) {
dev_err(dev, "ice_init_interrupt_scheme failed: %d\n", err);
err = -EIO;
goto err_init_interrupt_unroll;
}
/* Driver is mostly up */
clear_bit(__ICE_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 (test_bit(ICE_FLAG_MSIX_ENA, pf->flags)) {
err = ice_req_irq_msix_misc(pf);
if (err) {
dev_err(dev, "setup of misc vector failed: %d\n", err);
goto err_init_interrupt_unroll;
}
}
/* create switch struct for the switch element created by FW on boot */
pf->first_sw = devm_kzalloc(dev, sizeof(*pf->first_sw), GFP_KERNEL);
if (!pf->first_sw) {
err = -ENOMEM;
goto err_msix_misc_unroll;
}
if (hw->evb_veb)
pf->first_sw->bridge_mode = BRIDGE_MODE_VEB;
else
pf->first_sw->bridge_mode = BRIDGE_MODE_VEPA;
pf->first_sw->pf = pf;
/* record the sw_id available for later use */
pf->first_sw->sw_id = hw->port_info->sw_id;
err = ice_setup_pf_sw(pf);
if (err) {
dev_err(dev, "probe failed due to setup pf switch:%d\n", err);
goto err_alloc_sw_unroll;
}
clear_bit(__ICE_SERVICE_DIS, pf->state);
/* since everything is good, start the service timer */
mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
err = ice_init_link_events(pf->hw.port_info);
if (err) {
dev_err(dev, "ice_init_link_events failed: %d\n", err);
goto err_alloc_sw_unroll;
}
ice_verify_cacheline_size(pf);
return 0;
err_alloc_sw_unroll:
set_bit(__ICE_SERVICE_DIS, pf->state);
set_bit(__ICE_DOWN, pf->state);
devm_kfree(&pf->pdev->dev, pf->first_sw);
err_msix_misc_unroll:
ice_free_irq_msix_misc(pf);
err_init_interrupt_unroll:
ice_clear_interrupt_scheme(pf);
devm_kfree(dev, pf->vsi);
err_init_pf_unroll:
ice_deinit_pf(pf);
ice_deinit_hw(hw);
err_exit_unroll:
pci_disable_pcie_error_reporting(pdev);
return err;
}
/**
* ice_remove - Device removal routine
* @pdev: PCI device information struct
*/
static void ice_remove(struct pci_dev *pdev)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
int i;
if (!pf)
return;
for (i = 0; i < ICE_MAX_RESET_WAIT; i++) {
if (!ice_is_reset_in_progress(pf->state))
break;
msleep(100);
}
set_bit(__ICE_DOWN, pf->state);
ice_service_task_stop(pf);
if (test_bit(ICE_FLAG_SRIOV_ENA, pf->flags))
ice_free_vfs(pf);
ice_vsi_release_all(pf);
ice_free_irq_msix_misc(pf);
ice_for_each_vsi(pf, i) {
if (!pf->vsi[i])
continue;
ice_vsi_free_q_vectors(pf->vsi[i]);
}
ice_clear_interrupt_scheme(pf);
ice_deinit_pf(pf);
ice_deinit_hw(&pf->hw);
pci_disable_pcie_error_reporting(pdev);
}
/**
* ice_pci_err_detected - warning that PCI error has been detected
* @pdev: PCI device information struct
* @err: the type of PCI error
*
* Called to warn that something happened on the PCI bus and the error handling
* is in progress. Allows the driver to gracefully prepare/handle PCI errors.
*/
static pci_ers_result_t
ice_pci_err_detected(struct pci_dev *pdev, enum pci_channel_state err)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
if (!pf) {
dev_err(&pdev->dev, "%s: unrecoverable device error %d\n",
__func__, err);
return PCI_ERS_RESULT_DISCONNECT;
}
if (!test_bit(__ICE_SUSPENDED, pf->state)) {
ice_service_task_stop(pf);
if (!test_bit(__ICE_PREPARED_FOR_RESET, pf->state)) {
set_bit(__ICE_PFR_REQ, pf->state);
ice_prepare_for_reset(pf);
}
}
return PCI_ERS_RESULT_NEED_RESET;
}
/**
* ice_pci_err_slot_reset - a PCI slot reset has just happened
* @pdev: PCI device information struct
*
* Called to determine if the driver can recover from the PCI slot reset by
* using a register read to determine if the device is recoverable.
*/
static pci_ers_result_t ice_pci_err_slot_reset(struct pci_dev *pdev)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
pci_ers_result_t result;
int err;
u32 reg;
err = pci_enable_device_mem(pdev);
if (err) {
dev_err(&pdev->dev,
"Cannot re-enable PCI device after reset, error %d\n",
err);
result = PCI_ERS_RESULT_DISCONNECT;
} else {
pci_set_master(pdev);
pci_restore_state(pdev);
pci_save_state(pdev);
pci_wake_from_d3(pdev, false);
/* Check for life */
reg = rd32(&pf->hw, GLGEN_RTRIG);
if (!reg)
result = PCI_ERS_RESULT_RECOVERED;
else
result = PCI_ERS_RESULT_DISCONNECT;
}
err = pci_cleanup_aer_uncorrect_error_status(pdev);
if (err)
dev_dbg(&pdev->dev,
"pci_cleanup_aer_uncorrect_error_status failed, error %d\n",
err);
/* non-fatal, continue */
return result;
}
/**
* ice_pci_err_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 have finished
*/
static void ice_pci_err_resume(struct pci_dev *pdev)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
if (!pf) {
dev_err(&pdev->dev,
"%s failed, device is unrecoverable\n", __func__);
return;
}
if (test_bit(__ICE_SUSPENDED, pf->state)) {
dev_dbg(&pdev->dev, "%s failed to resume normal operations!\n",
__func__);
return;
}
ice_do_reset(pf, ICE_RESET_PFR);
ice_service_task_restart(pf);
mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
}
/**
* ice_pci_err_reset_prepare - prepare device driver for PCI reset
* @pdev: PCI device information struct
*/
static void ice_pci_err_reset_prepare(struct pci_dev *pdev)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
if (!test_bit(__ICE_SUSPENDED, pf->state)) {
ice_service_task_stop(pf);
if (!test_bit(__ICE_PREPARED_FOR_RESET, pf->state)) {
set_bit(__ICE_PFR_REQ, pf->state);
ice_prepare_for_reset(pf);
}
}
}
/**
* ice_pci_err_reset_done - PCI reset done, device driver reset can begin
* @pdev: PCI device information struct
*/
static void ice_pci_err_reset_done(struct pci_dev *pdev)
{
ice_pci_err_resume(pdev);
}
/* ice_pci_tbl - PCI Device ID Table
*
* Wildcard entries (PCI_ANY_ID) should come last
* Last entry must be all 0s
*
* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
* Class, Class Mask, private data (not used) }
*/
static const struct pci_device_id ice_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_BACKPLANE), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_QSFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_SFP), 0 },
/* required last entry */
{ 0, }
};
MODULE_DEVICE_TABLE(pci, ice_pci_tbl);
static const struct pci_error_handlers ice_pci_err_handler = {
.error_detected = ice_pci_err_detected,
.slot_reset = ice_pci_err_slot_reset,
.reset_prepare = ice_pci_err_reset_prepare,
.reset_done = ice_pci_err_reset_done,
.resume = ice_pci_err_resume
};
static struct pci_driver ice_driver = {
.name = KBUILD_MODNAME,
.id_table = ice_pci_tbl,
.probe = ice_probe,
.remove = ice_remove,
.sriov_configure = ice_sriov_configure,
.err_handler = &ice_pci_err_handler
};
/**
* ice_module_init - Driver registration routine
*
* ice_module_init is the first routine called when the driver is
* loaded. All it does is register with the PCI subsystem.
*/
static int __init ice_module_init(void)
{
int status;
pr_info("%s - version %s\n", ice_driver_string, ice_drv_ver);
pr_info("%s\n", ice_copyright);
ice_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, KBUILD_MODNAME);
if (!ice_wq) {
pr_err("Failed to create workqueue\n");
return -ENOMEM;
}
status = pci_register_driver(&ice_driver);
if (status) {
pr_err("failed to register pci driver, err %d\n", status);
destroy_workqueue(ice_wq);
}
return status;
}
module_init(ice_module_init);
/**
* ice_module_exit - Driver exit cleanup routine
*
* ice_module_exit is called just before the driver is removed
* from memory.
*/
static void __exit ice_module_exit(void)
{
pci_unregister_driver(&ice_driver);
destroy_workqueue(ice_wq);
pr_info("module unloaded\n");
}
module_exit(ice_module_exit);
/**
* ice_set_mac_address - NDO callback to set mac address
* @netdev: network interface device structure
* @pi: pointer to an address structure
*
* Returns 0 on success, negative on failure
*/
static int ice_set_mac_address(struct net_device *netdev, void *pi)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
struct sockaddr *addr = pi;
enum ice_status status;
LIST_HEAD(a_mac_list);
LIST_HEAD(r_mac_list);
u8 flags = 0;
int err;
u8 *mac;
mac = (u8 *)addr->sa_data;
if (!is_valid_ether_addr(mac))
return -EADDRNOTAVAIL;
if (ether_addr_equal(netdev->dev_addr, mac)) {
netdev_warn(netdev, "already using mac %pM\n", mac);
return 0;
}
if (test_bit(__ICE_DOWN, pf->state) ||
ice_is_reset_in_progress(pf->state)) {
netdev_err(netdev, "can't set mac %pM. device not ready\n",
mac);
return -EBUSY;
}
/* When we change the mac address we also have to change the mac address
* based filter rules that were created previously for the old mac
* address. So first, we remove the old filter rule using ice_remove_mac
* and then create a new filter rule using ice_add_mac. Note that for
* both these operations, we first need to form a "list" of mac
* addresses (even though in this case, we have only 1 mac address to be
* added/removed) and this done using ice_add_mac_to_list. Depending on
* the ensuing operation this "list" of mac addresses is either to be
* added or removed from the filter.
*/
err = ice_add_mac_to_list(vsi, &r_mac_list, netdev->dev_addr);
if (err) {
err = -EADDRNOTAVAIL;
goto free_lists;
}
status = ice_remove_mac(hw, &r_mac_list);
if (status) {
err = -EADDRNOTAVAIL;
goto free_lists;
}
err = ice_add_mac_to_list(vsi, &a_mac_list, mac);
if (err) {
err = -EADDRNOTAVAIL;
goto free_lists;
}
status = ice_add_mac(hw, &a_mac_list);
if (status) {
err = -EADDRNOTAVAIL;
goto free_lists;
}
free_lists:
/* free list entries */
ice_free_fltr_list(&pf->pdev->dev, &r_mac_list);
ice_free_fltr_list(&pf->pdev->dev, &a_mac_list);
if (err) {
netdev_err(netdev, "can't set mac %pM. filter update failed\n",
mac);
return err;
}
/* change the netdev's mac address */
memcpy(netdev->dev_addr, mac, netdev->addr_len);
netdev_dbg(vsi->netdev, "updated mac address to %pM\n",
netdev->dev_addr);
/* write new mac address to the firmware */
flags = ICE_AQC_MAN_MAC_UPDATE_LAA_WOL;
status = ice_aq_manage_mac_write(hw, mac, flags, NULL);
if (status) {
netdev_err(netdev, "can't set mac %pM. write to firmware failed.\n",
mac);
}
return 0;
}
/**
* ice_set_rx_mode - NDO callback to set the netdev filters
* @netdev: network interface device structure
*/
static void ice_set_rx_mode(struct net_device *netdev)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
if (!vsi)
return;
/* Set the flags to synchronize filters
* ndo_set_rx_mode may be triggered even without a change in netdev
* flags
*/
set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
set_bit(ICE_FLAG_FLTR_SYNC, vsi->back->flags);
/* schedule our worker thread which will take care of
* applying the new filter changes
*/
ice_service_task_schedule(vsi->back);
}
/**
* ice_fdb_add - add an entry to the hardware database
* @ndm: the input from the stack
* @tb: pointer to array of nladdr (unused)
* @dev: the net device pointer
* @addr: the MAC address entry being added
* @vid: VLAN id
* @flags: instructions from stack about fdb operation
* @extack: netlink extended ack
*/
static int
ice_fdb_add(struct ndmsg *ndm, struct nlattr __always_unused *tb[],
struct net_device *dev, const unsigned char *addr, u16 vid,
u16 flags, struct netlink_ext_ack __always_unused *extack)
{
int err;
if (vid) {
netdev_err(dev, "VLANs aren't supported yet for dev_uc|mc_add()\n");
return -EINVAL;
}
if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
netdev_err(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;
}
/**
* ice_fdb_del - delete an entry from the hardware database
* @ndm: the input from the stack
* @tb: pointer to array of nladdr (unused)
* @dev: the net device pointer
* @addr: the MAC address entry being added
* @vid: VLAN id
*/
static int
ice_fdb_del(struct ndmsg *ndm, __always_unused struct nlattr *tb[],
struct net_device *dev, const unsigned char *addr,
__always_unused u16 vid)
{
int err;
if (ndm->ndm_state & NUD_PERMANENT) {
netdev_err(dev, "FDB only supports static addresses\n");
return -EINVAL;
}
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;
}
/**
* ice_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
ice_set_features(struct net_device *netdev, netdev_features_t features)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
int ret = 0;
if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
ret = ice_vsi_manage_rss_lut(vsi, true);
else if (!(features & NETIF_F_RXHASH) &&
netdev->features & NETIF_F_RXHASH)
ret = ice_vsi_manage_rss_lut(vsi, false);
if ((features & NETIF_F_HW_VLAN_CTAG_RX) &&
!(netdev->features & NETIF_F_HW_VLAN_CTAG_RX))
ret = ice_vsi_manage_vlan_stripping(vsi, true);
else if (!(features & NETIF_F_HW_VLAN_CTAG_RX) &&
(netdev->features & NETIF_F_HW_VLAN_CTAG_RX))
ret = ice_vsi_manage_vlan_stripping(vsi, false);
else if ((features & NETIF_F_HW_VLAN_CTAG_TX) &&
!(netdev->features & NETIF_F_HW_VLAN_CTAG_TX))
ret = ice_vsi_manage_vlan_insertion(vsi);
else if (!(features & NETIF_F_HW_VLAN_CTAG_TX) &&
(netdev->features & NETIF_F_HW_VLAN_CTAG_TX))
ret = ice_vsi_manage_vlan_insertion(vsi);
return ret;
}
/**
* ice_vsi_vlan_setup - Setup vlan offload properties on a VSI
* @vsi: VSI to setup vlan properties for
*/
static int ice_vsi_vlan_setup(struct ice_vsi *vsi)
{
int ret = 0;
if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
ret = ice_vsi_manage_vlan_stripping(vsi, true);
if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_TX)
ret = ice_vsi_manage_vlan_insertion(vsi);
return ret;
}
/**
* ice_vsi_cfg - Setup the VSI
* @vsi: the VSI being configured
*
* Return 0 on success and negative value on error
*/
static int ice_vsi_cfg(struct ice_vsi *vsi)
{
int err;
if (vsi->netdev) {
ice_set_rx_mode(vsi->netdev);
err = ice_vsi_vlan_setup(vsi);
if (err)
return err;
}
err = ice_vsi_cfg_lan_txqs(vsi);
if (!err)
err = ice_vsi_cfg_rxqs(vsi);
return err;
}
/**
* ice_napi_enable_all - Enable NAPI for all q_vectors in the VSI
* @vsi: the VSI being configured
*/
static void ice_napi_enable_all(struct ice_vsi *vsi)
{
int q_idx;
if (!vsi->netdev)
return;
for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
struct ice_q_vector *q_vector = vsi->q_vectors[q_idx];
if (q_vector->rx.ring || q_vector->tx.ring)
napi_enable(&q_vector->napi);
}
}
/**
* ice_up_complete - Finish the last steps of bringing up a connection
* @vsi: The VSI being configured
*
* Return 0 on success and negative value on error
*/
static int ice_up_complete(struct ice_vsi *vsi)
{
struct ice_pf *pf = vsi->back;
int err;
if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags))
ice_vsi_cfg_msix(vsi);
else
return -ENOTSUPP;
/* Enable only Rx rings, Tx rings were enabled by the FW when the
* Tx queue group list was configured and the context bits were
* programmed using ice_vsi_cfg_txqs
*/
err = ice_vsi_start_rx_rings(vsi);
if (err)
return err;
clear_bit(__ICE_DOWN, vsi->state);
ice_napi_enable_all(vsi);
ice_vsi_ena_irq(vsi);
if (vsi->port_info &&
(vsi->port_info->phy.link_info.link_info & ICE_AQ_LINK_UP) &&
vsi->netdev) {
ice_print_link_msg(vsi, true);
netif_tx_start_all_queues(vsi->netdev);
netif_carrier_on(vsi->netdev);
}
ice_service_task_schedule(pf);
return 0;
}
/**
* ice_up - Bring the connection back up after being down
* @vsi: VSI being configured
*/
int ice_up(struct ice_vsi *vsi)
{
int err;
err = ice_vsi_cfg(vsi);
if (!err)
err = ice_up_complete(vsi);
return err;
}
/**
* ice_fetch_u64_stats_per_ring - get packets and bytes stats per ring
* @ring: Tx or Rx ring to read stats from
* @pkts: packets stats counter
* @bytes: bytes stats counter
*
* This function fetches stats from the ring considering the atomic operations
* that needs to be performed to read u64 values in 32 bit machine.
*/
static void
ice_fetch_u64_stats_per_ring(struct ice_ring *ring, u64 *pkts, u64 *bytes)
{
unsigned int start;
*pkts = 0;
*bytes = 0;
if (!ring)
return;
do {
start = u64_stats_fetch_begin_irq(&ring->syncp);
*pkts = ring->stats.pkts;
*bytes = ring->stats.bytes;
} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
}
/**
* ice_update_vsi_ring_stats - Update VSI stats counters
* @vsi: the VSI to be updated
*/
static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
{
struct rtnl_link_stats64 *vsi_stats = &vsi->net_stats;
struct ice_ring *ring;
u64 pkts, bytes;
int i;
/* reset netdev stats */
vsi_stats->tx_packets = 0;
vsi_stats->tx_bytes = 0;
vsi_stats->rx_packets = 0;
vsi_stats->rx_bytes = 0;
/* reset non-netdev (extended) stats */
vsi->tx_restart = 0;
vsi->tx_busy = 0;
vsi->tx_linearize = 0;
vsi->rx_buf_failed = 0;
vsi->rx_page_failed = 0;
rcu_read_lock();
/* update Tx rings counters */
ice_for_each_txq(vsi, i) {
ring = READ_ONCE(vsi->tx_rings[i]);
ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes);
vsi_stats->tx_packets += pkts;
vsi_stats->tx_bytes += bytes;
vsi->tx_restart += ring->tx_stats.restart_q;
vsi->tx_busy += ring->tx_stats.tx_busy;
vsi->tx_linearize += ring->tx_stats.tx_linearize;
}
/* update Rx rings counters */
ice_for_each_rxq(vsi, i) {
ring = READ_ONCE(vsi->rx_rings[i]);
ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes);
vsi_stats->rx_packets += pkts;
vsi_stats->rx_bytes += bytes;
vsi->rx_buf_failed += ring->rx_stats.alloc_buf_failed;
vsi->rx_page_failed += ring->rx_stats.alloc_page_failed;
}
rcu_read_unlock();
}
/**
* ice_update_vsi_stats - Update VSI stats counters
* @vsi: the VSI to be updated
*/
static void ice_update_vsi_stats(struct ice_vsi *vsi)
{
struct rtnl_link_stats64 *cur_ns = &vsi->net_stats;
struct ice_eth_stats *cur_es = &vsi->eth_stats;
struct ice_pf *pf = vsi->back;
if (test_bit(__ICE_DOWN, vsi->state) ||
test_bit(__ICE_CFG_BUSY, pf->state))
return;
/* get stats as recorded by Tx/Rx rings */
ice_update_vsi_ring_stats(vsi);
/* get VSI stats as recorded by the hardware */
ice_update_eth_stats(vsi);
cur_ns->tx_errors = cur_es->tx_errors;
cur_ns->rx_dropped = cur_es->rx_discards;
cur_ns->tx_dropped = cur_es->tx_discards;
cur_ns->multicast = cur_es->rx_multicast;
/* update some more netdev stats if this is main VSI */
if (vsi->type == ICE_VSI_PF) {
cur_ns->rx_crc_errors = pf->stats.crc_errors;
cur_ns->rx_errors = pf->stats.crc_errors +
pf->stats.illegal_bytes;
cur_ns->rx_length_errors = pf->stats.rx_len_errors;
}
}
/**
* ice_update_pf_stats - Update PF port stats counters
* @pf: PF whose stats needs to be updated
*/
static void ice_update_pf_stats(struct ice_pf *pf)
{
struct ice_hw_port_stats *prev_ps, *cur_ps;
struct ice_hw *hw = &pf->hw;
u8 pf_id;
prev_ps = &pf->stats_prev;
cur_ps = &pf->stats;
pf_id = hw->pf_id;
ice_stat_update40(hw, GLPRT_GORCH(pf_id), GLPRT_GORCL(pf_id),
pf->stat_prev_loaded, &prev_ps->eth.rx_bytes,
&cur_ps->eth.rx_bytes);
ice_stat_update40(hw, GLPRT_UPRCH(pf_id), GLPRT_UPRCL(pf_id),
pf->stat_prev_loaded, &prev_ps->eth.rx_unicast,
&cur_ps->eth.rx_unicast);
ice_stat_update40(hw, GLPRT_MPRCH(pf_id), GLPRT_MPRCL(pf_id),
pf->stat_prev_loaded, &prev_ps->eth.rx_multicast,
&cur_ps->eth.rx_multicast);
ice_stat_update40(hw, GLPRT_BPRCH(pf_id), GLPRT_BPRCL(pf_id),
pf->stat_prev_loaded, &prev_ps->eth.rx_broadcast,
&cur_ps->eth.rx_broadcast);
ice_stat_update40(hw, GLPRT_GOTCH(pf_id), GLPRT_GOTCL(pf_id),
pf->stat_prev_loaded, &prev_ps->eth.tx_bytes,
&cur_ps->eth.tx_bytes);
ice_stat_update40(hw, GLPRT_UPTCH(pf_id), GLPRT_UPTCL(pf_id),
pf->stat_prev_loaded, &prev_ps->eth.tx_unicast,
&cur_ps->eth.tx_unicast);
ice_stat_update40(hw, GLPRT_MPTCH(pf_id), GLPRT_MPTCL(pf_id),
pf->stat_prev_loaded, &prev_ps->eth.tx_multicast,
&cur_ps->eth.tx_multicast);
ice_stat_update40(hw, GLPRT_BPTCH(pf_id), GLPRT_BPTCL(pf_id),
pf->stat_prev_loaded, &prev_ps->eth.tx_broadcast,
&cur_ps->eth.tx_broadcast);
ice_stat_update32(hw, GLPRT_TDOLD(pf_id), pf->stat_prev_loaded,
&prev_ps->tx_dropped_link_down,
&cur_ps->tx_dropped_link_down);
ice_stat_update40(hw, GLPRT_PRC64H(pf_id), GLPRT_PRC64L(pf_id),
pf->stat_prev_loaded, &prev_ps->rx_size_64,
&cur_ps->rx_size_64);
ice_stat_update40(hw, GLPRT_PRC127H(pf_id), GLPRT_PRC127L(pf_id),
pf->stat_prev_loaded, &prev_ps->rx_size_127,
&cur_ps->rx_size_127);
ice_stat_update40(hw, GLPRT_PRC255H(pf_id), GLPRT_PRC255L(pf_id),
pf->stat_prev_loaded, &prev_ps->rx_size_255,
&cur_ps->rx_size_255);
ice_stat_update40(hw, GLPRT_PRC511H(pf_id), GLPRT_PRC511L(pf_id),
pf->stat_prev_loaded, &prev_ps->rx_size_511,
&cur_ps->rx_size_511);
ice_stat_update40(hw, GLPRT_PRC1023H(pf_id),
GLPRT_PRC1023L(pf_id), pf->stat_prev_loaded,
&prev_ps->rx_size_1023, &cur_ps->rx_size_1023);
ice_stat_update40(hw, GLPRT_PRC1522H(pf_id),
GLPRT_PRC1522L(pf_id), pf->stat_prev_loaded,
&prev_ps->rx_size_1522, &cur_ps->rx_size_1522);
ice_stat_update40(hw, GLPRT_PRC9522H(pf_id),
GLPRT_PRC9522L(pf_id), pf->stat_prev_loaded,
&prev_ps->rx_size_big, &cur_ps->rx_size_big);
ice_stat_update40(hw, GLPRT_PTC64H(pf_id), GLPRT_PTC64L(pf_id),
pf->stat_prev_loaded, &prev_ps->tx_size_64,
&cur_ps->tx_size_64);
ice_stat_update40(hw, GLPRT_PTC127H(pf_id), GLPRT_PTC127L(pf_id),
pf->stat_prev_loaded, &prev_ps->tx_size_127,
&cur_ps->tx_size_127);
ice_stat_update40(hw, GLPRT_PTC255H(pf_id), GLPRT_PTC255L(pf_id),
pf->stat_prev_loaded, &prev_ps->tx_size_255,
&cur_ps->tx_size_255);
ice_stat_update40(hw, GLPRT_PTC511H(pf_id), GLPRT_PTC511L(pf_id),
pf->stat_prev_loaded, &prev_ps->tx_size_511,
&cur_ps->tx_size_511);
ice_stat_update40(hw, GLPRT_PTC1023H(pf_id),
GLPRT_PTC1023L(pf_id), pf->stat_prev_loaded,
&prev_ps->tx_size_1023, &cur_ps->tx_size_1023);
ice_stat_update40(hw, GLPRT_PTC1522H(pf_id),
GLPRT_PTC1522L(pf_id), pf->stat_prev_loaded,
&prev_ps->tx_size_1522, &cur_ps->tx_size_1522);
ice_stat_update40(hw, GLPRT_PTC9522H(pf_id),
GLPRT_PTC9522L(pf_id), pf->stat_prev_loaded,
&prev_ps->tx_size_big, &cur_ps->tx_size_big);
ice_stat_update32(hw, GLPRT_LXONRXC(pf_id), pf->stat_prev_loaded,
&prev_ps->link_xon_rx, &cur_ps->link_xon_rx);
ice_stat_update32(hw, GLPRT_LXOFFRXC(pf_id), pf->stat_prev_loaded,
&prev_ps->link_xoff_rx, &cur_ps->link_xoff_rx);
ice_stat_update32(hw, GLPRT_LXONTXC(pf_id), pf->stat_prev_loaded,
&prev_ps->link_xon_tx, &cur_ps->link_xon_tx);
ice_stat_update32(hw, GLPRT_LXOFFTXC(pf_id), pf->stat_prev_loaded,
&prev_ps->link_xoff_tx, &cur_ps->link_xoff_tx);
ice_stat_update32(hw, GLPRT_CRCERRS(pf_id), pf->stat_prev_loaded,
&prev_ps->crc_errors, &cur_ps->crc_errors);
ice_stat_update32(hw, GLPRT_ILLERRC(pf_id), pf->stat_prev_loaded,
&prev_ps->illegal_bytes, &cur_ps->illegal_bytes);
ice_stat_update32(hw, GLPRT_MLFC(pf_id), pf->stat_prev_loaded,
&prev_ps->mac_local_faults,
&cur_ps->mac_local_faults);
ice_stat_update32(hw, GLPRT_MRFC(pf_id), pf->stat_prev_loaded,
&prev_ps->mac_remote_faults,
&cur_ps->mac_remote_faults);
ice_stat_update32(hw, GLPRT_RLEC(pf_id), pf->stat_prev_loaded,
&prev_ps->rx_len_errors, &cur_ps->rx_len_errors);
ice_stat_update32(hw, GLPRT_RUC(pf_id), pf->stat_prev_loaded,
&prev_ps->rx_undersize, &cur_ps->rx_undersize);
ice_stat_update32(hw, GLPRT_RFC(pf_id), pf->stat_prev_loaded,
&prev_ps->rx_fragments, &cur_ps->rx_fragments);
ice_stat_update32(hw, GLPRT_ROC(pf_id), pf->stat_prev_loaded,
&prev_ps->rx_oversize, &cur_ps->rx_oversize);
ice_stat_update32(hw, GLPRT_RJC(pf_id), pf->stat_prev_loaded,
&prev_ps->rx_jabber, &cur_ps->rx_jabber);
pf->stat_prev_loaded = true;
}
/**
* ice_get_stats64 - get statistics for network device structure
* @netdev: network interface device structure
* @stats: main device statistics structure
*/
static
void ice_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct rtnl_link_stats64 *vsi_stats;
struct ice_vsi *vsi = np->vsi;
vsi_stats = &vsi->net_stats;
if (test_bit(__ICE_DOWN, vsi->state) || !vsi->num_txq || !vsi->num_rxq)
return;
/* netdev packet/byte stats come from ring counter. These are obtained
* by summing up ring counters (done by ice_update_vsi_ring_stats).
*/
ice_update_vsi_ring_stats(vsi);
stats->tx_packets = vsi_stats->tx_packets;
stats->tx_bytes = vsi_stats->tx_bytes;
stats->rx_packets = vsi_stats->rx_packets;
stats->rx_bytes = vsi_stats->rx_bytes;
/* The rest of the stats can be read from the hardware but instead we
* just return values that the watchdog task has already obtained from
* the hardware.
*/
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_dropped = vsi_stats->rx_dropped;
stats->rx_crc_errors = vsi_stats->rx_crc_errors;
stats->rx_length_errors = vsi_stats->rx_length_errors;
}
/**
* ice_napi_disable_all - Disable NAPI for all q_vectors in the VSI
* @vsi: VSI having NAPI disabled
*/
static void ice_napi_disable_all(struct ice_vsi *vsi)
{
int q_idx;
if (!vsi->netdev)
return;
for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
struct ice_q_vector *q_vector = vsi->q_vectors[q_idx];
if (q_vector->rx.ring || q_vector->tx.ring)
napi_disable(&q_vector->napi);
}
}
/**
* ice_force_phys_link_state - Force the physical link state
* @vsi: VSI to force the physical link state to up/down
* @link_up: true/false indicates to set the physical link to up/down
*
* Force the physical link state by getting the current PHY capabilities from
* hardware and setting the PHY config based on the determined capabilities. If
* link changes a link event will be triggered because both the Enable Automatic
* Link Update and LESM Enable bits are set when setting the PHY capabilities.
*
* Returns 0 on success, negative on failure
*/
static int ice_force_phys_link_state(struct ice_vsi *vsi, bool link_up)
{
struct ice_aqc_get_phy_caps_data *pcaps;
struct ice_aqc_set_phy_cfg_data *cfg;
struct ice_port_info *pi;
struct device *dev;
int retcode;
if (!vsi || !vsi->port_info || !vsi->back)
return -EINVAL;
if (vsi->type != ICE_VSI_PF)
return 0;
dev = &vsi->back->pdev->dev;
pi = vsi->port_info;
pcaps = devm_kzalloc(dev, sizeof(*pcaps), GFP_KERNEL);
if (!pcaps)
return -ENOMEM;
retcode = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_SW_CFG, pcaps,
NULL);
if (retcode) {
dev_err(dev,
"Failed to get phy capabilities, VSI %d error %d\n",
vsi->vsi_num, retcode);
retcode = -EIO;
goto out;
}
/* No change in link */
if (link_up == !!(pcaps->caps & ICE_AQC_PHY_EN_LINK) &&
link_up == !!(pi->phy.link_info.link_info & ICE_AQ_LINK_UP))
goto out;
cfg = devm_kzalloc(dev, sizeof(*cfg), GFP_KERNEL);
if (!cfg) {
retcode = -ENOMEM;
goto out;
}
cfg->phy_type_low = pcaps->phy_type_low;
cfg->phy_type_high = pcaps->phy_type_high;
cfg->caps = pcaps->caps | ICE_AQ_PHY_ENA_AUTO_LINK_UPDT;
cfg->low_power_ctrl = pcaps->low_power_ctrl;
cfg->eee_cap = pcaps->eee_cap;
cfg->eeer_value = pcaps->eeer_value;
cfg->link_fec_opt = pcaps->link_fec_options;
if (link_up)
cfg->caps |= ICE_AQ_PHY_ENA_LINK;
else
cfg->caps &= ~ICE_AQ_PHY_ENA_LINK;
retcode = ice_aq_set_phy_cfg(&vsi->back->hw, pi->lport, cfg, NULL);
if (retcode) {
dev_err(dev, "Failed to set phy config, VSI %d error %d\n",
vsi->vsi_num, retcode);
retcode = -EIO;
}
devm_kfree(dev, cfg);
out:
devm_kfree(dev, pcaps);
return retcode;
}
/**
* ice_down - Shutdown the connection
* @vsi: The VSI being stopped
*/
int ice_down(struct ice_vsi *vsi)
{
int i, tx_err, rx_err, link_err = 0;
/* Caller of this function is expected to set the
* vsi->state __ICE_DOWN bit
*/
if (vsi->netdev) {
netif_carrier_off(vsi->netdev);
netif_tx_disable(vsi->netdev);
}
ice_vsi_dis_irq(vsi);
tx_err = ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, 0);
if (tx_err)
netdev_err(vsi->netdev,
"Failed stop Tx rings, VSI %d error %d\n",
vsi->vsi_num, tx_err);
rx_err = ice_vsi_stop_rx_rings(vsi);
if (rx_err)
netdev_err(vsi->netdev,
"Failed stop Rx rings, VSI %d error %d\n",
vsi->vsi_num, rx_err);
ice_napi_disable_all(vsi);
if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) {
link_err = ice_force_phys_link_state(vsi, false);
if (link_err)
netdev_err(vsi->netdev,
"Failed to set physical link down, VSI %d error %d\n",
vsi->vsi_num, link_err);
}
ice_for_each_txq(vsi, i)
ice_clean_tx_ring(vsi->tx_rings[i]);
ice_for_each_rxq(vsi, i)
ice_clean_rx_ring(vsi->rx_rings[i]);
if (tx_err || rx_err || link_err) {
netdev_err(vsi->netdev,
"Failed to close VSI 0x%04X on switch 0x%04X\n",
vsi->vsi_num, vsi->vsw->sw_id);
return -EIO;
}
return 0;
}
/**
* ice_vsi_setup_tx_rings - Allocate VSI Tx queue resources
* @vsi: VSI having resources allocated
*
* Return 0 on success, negative on failure
*/
static int ice_vsi_setup_tx_rings(struct ice_vsi *vsi)
{
int i, err = 0;
if (!vsi->num_txq) {
dev_err(&vsi->back->pdev->dev, "VSI %d has 0 Tx queues\n",
vsi->vsi_num);
return -EINVAL;
}
ice_for_each_txq(vsi, i) {
vsi->tx_rings[i]->netdev = vsi->netdev;
err = ice_setup_tx_ring(vsi->tx_rings[i]);
if (err)
break;
}
return err;
}
/**
* ice_vsi_setup_rx_rings - Allocate VSI Rx queue resources
* @vsi: VSI having resources allocated
*
* Return 0 on success, negative on failure
*/
static int ice_vsi_setup_rx_rings(struct ice_vsi *vsi)
{
int i, err = 0;
if (!vsi->num_rxq) {
dev_err(&vsi->back->pdev->dev, "VSI %d has 0 Rx queues\n",
vsi->vsi_num);
return -EINVAL;
}
ice_for_each_rxq(vsi, i) {
vsi->rx_rings[i]->netdev = vsi->netdev;
err = ice_setup_rx_ring(vsi->rx_rings[i]);
if (err)
break;
}
return err;
}
/**
* ice_vsi_req_irq - Request IRQ from the OS
* @vsi: The VSI IRQ is being requested for
* @basename: name for the vector
*
* Return 0 on success and a negative value on error
*/
static int ice_vsi_req_irq(struct ice_vsi *vsi, char *basename)
{
struct ice_pf *pf = vsi->back;
int err = -EINVAL;
if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags))
err = ice_vsi_req_irq_msix(vsi, basename);
return err;
}
/**
* ice_vsi_open - Called when a network interface is made active
* @vsi: the VSI to open
*
* Initialization of the VSI
*
* Returns 0 on success, negative value on error
*/
static int ice_vsi_open(struct ice_vsi *vsi)
{
char int_name[ICE_INT_NAME_STR_LEN];
struct ice_pf *pf = vsi->back;
int err;
/* allocate descriptors */
err = ice_vsi_setup_tx_rings(vsi);
if (err)
goto err_setup_tx;
err = ice_vsi_setup_rx_rings(vsi);
if (err)
goto err_setup_rx;
err = ice_vsi_cfg(vsi);
if (err)
goto err_setup_rx;
snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
err = ice_vsi_req_irq(vsi, int_name);
if (err)
goto err_setup_rx;
/* Notify the stack of the actual queue counts. */
err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_txq);
if (err)
goto err_set_qs;
err = netif_set_real_num_rx_queues(vsi->netdev, vsi->num_rxq);
if (err)
goto err_set_qs;
err = ice_up_complete(vsi);
if (err)
goto err_up_complete;
return 0;
err_up_complete:
ice_down(vsi);
err_set_qs:
ice_vsi_free_irq(vsi);
err_setup_rx:
ice_vsi_free_rx_rings(vsi);
err_setup_tx:
ice_vsi_free_tx_rings(vsi);
return err;
}
/**
* ice_vsi_release_all - Delete all VSIs
* @pf: PF from which all VSIs are being removed
*/
static void ice_vsi_release_all(struct ice_pf *pf)
{
int err, i;
if (!pf->vsi)
return;
ice_for_each_vsi(pf, i) {
if (!pf->vsi[i])
continue;
err = ice_vsi_release(pf->vsi[i]);
if (err)
dev_dbg(&pf->pdev->dev,
"Failed to release pf->vsi[%d], err %d, vsi_num = %d\n",
i, err, pf->vsi[i]->vsi_num);
}
}
/**
* ice_dis_vsi - pause a VSI
* @vsi: the VSI being paused
* @locked: is the rtnl_lock already held
*/
static void ice_dis_vsi(struct ice_vsi *vsi, bool locked)
{
if (test_bit(__ICE_DOWN, vsi->state))
return;
set_bit(__ICE_NEEDS_RESTART, vsi->state);
if (vsi->type == ICE_VSI_PF && vsi->netdev) {
if (netif_running(vsi->netdev)) {
if (!locked) {
rtnl_lock();
vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
rtnl_unlock();
} else {
vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
}
} else {
ice_vsi_close(vsi);
}
}
}
/**
* ice_ena_vsi - resume a VSI
* @vsi: the VSI being resume
*/
static int ice_ena_vsi(struct ice_vsi *vsi)
{
int err = 0;
if (test_and_clear_bit(__ICE_NEEDS_RESTART, vsi->state) &&
vsi->netdev) {
if (netif_running(vsi->netdev)) {
rtnl_lock();
err = vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
rtnl_unlock();
} else {
err = ice_vsi_open(vsi);
}
}
return err;
}
/**
* ice_pf_dis_all_vsi - Pause all VSIs on a PF
* @pf: the PF
*/
static void ice_pf_dis_all_vsi(struct ice_pf *pf)
{
int v;
ice_for_each_vsi(pf, v)
if (pf->vsi[v])
ice_dis_vsi(pf->vsi[v], false);
}
/**
* ice_pf_ena_all_vsi - Resume all VSIs on a PF
* @pf: the PF
*/
static int ice_pf_ena_all_vsi(struct ice_pf *pf)
{
int v;
ice_for_each_vsi(pf, v)
if (pf->vsi[v])
if (ice_ena_vsi(pf->vsi[v]))
return -EIO;
return 0;
}
/**
* ice_vsi_rebuild_all - rebuild all VSIs in pf
* @pf: the PF
*/
static int ice_vsi_rebuild_all(struct ice_pf *pf)
{
int i;
/* loop through pf->vsi array and reinit the VSI if found */
ice_for_each_vsi(pf, i) {
int err;
if (!pf->vsi[i])
continue;
err = ice_vsi_rebuild(pf->vsi[i]);
if (err) {
dev_err(&pf->pdev->dev,
"VSI at index %d rebuild failed\n",
pf->vsi[i]->idx);
return err;
}
dev_info(&pf->pdev->dev,
"VSI at index %d rebuilt. vsi_num = 0x%x\n",
pf->vsi[i]->idx, pf->vsi[i]->vsi_num);
}
return 0;
}
/**
* ice_vsi_replay_all - replay all VSIs configuration in the PF
* @pf: the PF
*/
static int ice_vsi_replay_all(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
enum ice_status ret;
int i;
/* loop through pf->vsi array and replay the VSI if found */
ice_for_each_vsi(pf, i) {
if (!pf->vsi[i])
continue;
ret = ice_replay_vsi(hw, pf->vsi[i]->idx);
if (ret) {
dev_err(&pf->pdev->dev,
"VSI at index %d replay failed %d\n",
pf->vsi[i]->idx, ret);
return -EIO;
}
/* Re-map HW VSI number, using VSI handle that has been
* previously validated in ice_replay_vsi() call above
*/
pf->vsi[i]->vsi_num = ice_get_hw_vsi_num(hw, pf->vsi[i]->idx);
dev_info(&pf->pdev->dev,
"VSI at index %d filter replayed successfully - vsi_num %i\n",
pf->vsi[i]->idx, pf->vsi[i]->vsi_num);
}
/* Clean up replay filter after successful re-configuration */
ice_replay_post(hw);
return 0;
}
/**
* ice_rebuild - rebuild after reset
* @pf: pf to rebuild
*/
static void ice_rebuild(struct ice_pf *pf)
{
struct device *dev = &pf->pdev->dev;
struct ice_hw *hw = &pf->hw;
enum ice_status ret;
int err, i;
if (test_bit(__ICE_DOWN, pf->state))
goto clear_recovery;
dev_dbg(dev, "rebuilding pf\n");
ret = ice_init_all_ctrlq(hw);
if (ret) {
dev_err(dev, "control queues init failed %d\n", ret);
goto err_init_ctrlq;
}
ret = ice_clear_pf_cfg(hw);
if (ret) {
dev_err(dev, "clear PF configuration failed %d\n", ret);
goto err_init_ctrlq;
}
ice_clear_pxe_mode(hw);
ret = ice_get_caps(hw);
if (ret) {
dev_err(dev, "ice_get_caps failed %d\n", ret);
goto err_init_ctrlq;
}
err = ice_sched_init_port(hw->port_info);
if (err)
goto err_sched_init_port;
/* reset search_hint of irq_trackers to 0 since interrupts are
* reclaimed and could be allocated from beginning during VSI rebuild
*/
pf->sw_irq_tracker->search_hint = 0;
pf->hw_irq_tracker->search_hint = 0;
err = ice_vsi_rebuild_all(pf);
if (err) {
dev_err(dev, "ice_vsi_rebuild_all failed\n");
goto err_vsi_rebuild;
}
err = ice_update_link_info(hw->port_info);
if (err)
dev_err(&pf->pdev->dev, "Get link status error %d\n", err);
/* Replay all VSIs Configuration, including filters after reset */
if (ice_vsi_replay_all(pf)) {
dev_err(&pf->pdev->dev,
"error replaying VSI configurations with switch filter rules\n");
goto err_vsi_rebuild;
}
/* start misc vector */
if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags)) {
err = ice_req_irq_msix_misc(pf);
if (err) {
dev_err(dev, "misc vector setup failed: %d\n", err);
goto err_vsi_rebuild;
}
}
/* restart the VSIs that were rebuilt and running before the reset */
err = ice_pf_ena_all_vsi(pf);
if (err) {
dev_err(&pf->pdev->dev, "error enabling VSIs\n");
/* no need to disable VSIs in tear down path in ice_rebuild()
* since its already taken care in ice_vsi_open()
*/
goto err_vsi_rebuild;
}
ice_for_each_vsi(pf, i) {
bool link_up;
if (!pf->vsi[i] || pf->vsi[i]->type != ICE_VSI_PF)
continue;
ice_get_link_status(pf->vsi[i]->port_info, &link_up);
if (link_up) {
netif_carrier_on(pf->vsi[i]->netdev);
netif_tx_wake_all_queues(pf->vsi[i]->netdev);
} else {
netif_carrier_off(pf->vsi[i]->netdev);
netif_tx_stop_all_queues(pf->vsi[i]->netdev);
}
}
/* if we get here, reset flow is successful */
clear_bit(__ICE_RESET_FAILED, pf->state);
return;
err_vsi_rebuild:
ice_vsi_release_all(pf);
err_sched_init_port:
ice_sched_cleanup_all(hw);
err_init_ctrlq:
ice_shutdown_all_ctrlq(hw);
set_bit(__ICE_RESET_FAILED, pf->state);
clear_recovery:
/* set this bit in PF state to control service task scheduling */
set_bit(__ICE_NEEDS_RESTART, pf->state);
dev_err(dev, "Rebuild failed, unload and reload driver\n");
}
/**
* ice_change_mtu - NDO callback to change the MTU
* @netdev: network interface device structure
* @new_mtu: new value for maximum frame size
*
* Returns 0 on success, negative on failure
*/
static int ice_change_mtu(struct net_device *netdev, int new_mtu)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
u8 count = 0;
if (new_mtu == netdev->mtu) {
netdev_warn(netdev, "mtu is already %u\n", netdev->mtu);
return 0;
}
if (new_mtu < netdev->min_mtu) {
netdev_err(netdev, "new mtu invalid. min_mtu is %d\n",
netdev->min_mtu);
return -EINVAL;
} else if (new_mtu > netdev->max_mtu) {
netdev_err(netdev, "new mtu invalid. max_mtu is %d\n",
netdev->min_mtu);
return -EINVAL;
}
/* if a reset is in progress, wait for some time for it to complete */
do {
if (ice_is_reset_in_progress(pf->state)) {
count++;
usleep_range(1000, 2000);
} else {
break;
}
} while (count < 100);
if (count == 100) {
netdev_err(netdev, "can't change mtu. Device is busy\n");
return -EBUSY;
}
netdev->mtu = new_mtu;
/* if VSI is up, bring it down and then back up */
if (!test_and_set_bit(__ICE_DOWN, vsi->state)) {
int err;
err = ice_down(vsi);
if (err) {
netdev_err(netdev, "change mtu if_up err %d\n", err);
return err;
}
err = ice_up(vsi);
if (err) {
netdev_err(netdev, "change mtu if_up err %d\n", err);
return err;
}
}
netdev_dbg(netdev, "changed mtu to %d\n", new_mtu);
return 0;
}
/**
* ice_set_rss - Set RSS keys and lut
* @vsi: Pointer to VSI structure
* @seed: RSS hash seed
* @lut: Lookup table
* @lut_size: Lookup table size
*
* Returns 0 on success, negative on failure
*/
int ice_set_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
enum ice_status status;
if (seed) {
struct ice_aqc_get_set_rss_keys *buf =
(struct ice_aqc_get_set_rss_keys *)seed;
status = ice_aq_set_rss_key(hw, vsi->idx, buf);
if (status) {
dev_err(&pf->pdev->dev,
"Cannot set RSS key, err %d aq_err %d\n",
status, hw->adminq.rq_last_status);
return -EIO;
}
}
if (lut) {
status = ice_aq_set_rss_lut(hw, vsi->idx, vsi->rss_lut_type,
lut, lut_size);
if (status) {
dev_err(&pf->pdev->dev,
"Cannot set RSS lut, err %d aq_err %d\n",
status, hw->adminq.rq_last_status);
return -EIO;
}
}
return 0;
}
/**
* ice_get_rss - Get RSS keys and lut
* @vsi: Pointer to VSI structure
* @seed: Buffer to store the keys
* @lut: Buffer to store the lookup table entries
* @lut_size: Size of buffer to store the lookup table entries
*
* Returns 0 on success, negative on failure
*/
int ice_get_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
enum ice_status status;
if (seed) {
struct ice_aqc_get_set_rss_keys *buf =
(struct ice_aqc_get_set_rss_keys *)seed;
status = ice_aq_get_rss_key(hw, vsi->idx, buf);
if (status) {
dev_err(&pf->pdev->dev,
"Cannot get RSS key, err %d aq_err %d\n",
status, hw->adminq.rq_last_status);
return -EIO;
}
}
if (lut) {
status = ice_aq_get_rss_lut(hw, vsi->idx, vsi->rss_lut_type,
lut, lut_size);
if (status) {
dev_err(&pf->pdev->dev,
"Cannot get RSS lut, err %d aq_err %d\n",
status, hw->adminq.rq_last_status);
return -EIO;
}
}
return 0;
}
/**
* ice_bridge_getlink - Get the hardware bridge mode
* @skb: skb buff
* @pid: process id
* @seq: RTNL message seq
* @dev: the netdev being configured
* @filter_mask: filter mask passed in
* @nlflags: netlink flags passed in
*
* Return the bridge mode (VEB/VEPA)
*/
static int
ice_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
struct net_device *dev, u32 filter_mask, int nlflags)
{
struct ice_netdev_priv *np = netdev_priv(dev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
u16 bmode;
bmode = pf->first_sw->bridge_mode;
return ndo_dflt_bridge_getlink(skb, pid, seq, dev, bmode, 0, 0, nlflags,
filter_mask, NULL);
}
/**
* ice_vsi_update_bridge_mode - Update VSI for switching bridge mode (VEB/VEPA)
* @vsi: Pointer to VSI structure
* @bmode: Hardware bridge mode (VEB/VEPA)
*
* Returns 0 on success, negative on failure
*/
static int ice_vsi_update_bridge_mode(struct ice_vsi *vsi, u16 bmode)
{
struct device *dev = &vsi->back->pdev->dev;
struct ice_aqc_vsi_props *vsi_props;
struct ice_hw *hw = &vsi->back->hw;
struct ice_vsi_ctx *ctxt;
enum ice_status status;
int ret = 0;
vsi_props = &vsi->info;
ctxt = devm_kzalloc(dev, sizeof(*ctxt), GFP_KERNEL);
if (!ctxt)
return -ENOMEM;
ctxt->info = vsi->info;
if (bmode == BRIDGE_MODE_VEB)
/* change from VEPA to VEB mode */
ctxt->info.sw_flags |= ICE_AQ_VSI_SW_FLAG_ALLOW_LB;
else
/* change from VEB to VEPA mode */
ctxt->info.sw_flags &= ~ICE_AQ_VSI_SW_FLAG_ALLOW_LB;
ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID);
status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
if (status) {
dev_err(dev, "update VSI for bridge mode failed, bmode = %d err %d aq_err %d\n",
bmode, status, hw->adminq.sq_last_status);
ret = -EIO;
goto out;
}
/* Update sw flags for book keeping */
vsi_props->sw_flags = ctxt->info.sw_flags;
out:
devm_kfree(dev, ctxt);
return ret;
}
/**
* ice_bridge_setlink - Set the hardware bridge mode
* @dev: the netdev being configured
* @nlh: RTNL message
* @flags: bridge setlink flags
* @extack: netlink extended ack
*
* Sets the bridge mode (VEB/VEPA) of the switch to which the netdev (VSI) is
* hooked up to. Iterates through the PF VSI list and sets the loopback mode (if
* not already set for all VSIs connected to this switch. And also update the
* unicast switch filter rules for the corresponding switch of the netdev.
*/
static int
ice_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
u16 __always_unused flags,
struct netlink_ext_ack __always_unused *extack)
{
struct ice_netdev_priv *np = netdev_priv(dev);
struct ice_pf *pf = np->vsi->back;
struct nlattr *attr, *br_spec;
struct ice_hw *hw = &pf->hw;
enum ice_status status;
struct ice_sw *pf_sw;
int rem, v, err = 0;
pf_sw = pf->first_sw;
/* find the attribute in the netlink message */
br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
nla_for_each_nested(attr, br_spec, rem) {
__u16 mode;
if (nla_type(attr) != IFLA_BRIDGE_MODE)
continue;
mode = nla_get_u16(attr);
if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
return -EINVAL;
/* Continue if bridge mode is not being flipped */
if (mode == pf_sw->bridge_mode)
continue;
/* Iterates through the PF VSI list and update the loopback
* mode of the VSI
*/
ice_for_each_vsi(pf, v) {
if (!pf->vsi[v])
continue;
err = ice_vsi_update_bridge_mode(pf->vsi[v], mode);
if (err)
return err;
}
hw->evb_veb = (mode == BRIDGE_MODE_VEB);
/* Update the unicast switch filter rules for the corresponding
* switch of the netdev
*/
status = ice_update_sw_rule_bridge_mode(hw);
if (status) {
netdev_err(dev, "switch rule update failed, mode = %d err %d aq_err %d\n",
mode, status, hw->adminq.sq_last_status);
/* revert hw->evb_veb */
hw->evb_veb = (pf_sw->bridge_mode == BRIDGE_MODE_VEB);
return -EIO;
}
pf_sw->bridge_mode = mode;
}
return 0;
}
/**
* ice_tx_timeout - Respond to a Tx Hang
* @netdev: network interface device structure
*/
static void ice_tx_timeout(struct net_device *netdev)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_ring *tx_ring = NULL;
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
int hung_queue = -1;
u32 i;
pf->tx_timeout_count++;
/* find the stopped queue the same way dev_watchdog() does */
for (i = 0; i < netdev->num_tx_queues; i++) {
unsigned long trans_start;
struct netdev_queue *q;
q = netdev_get_tx_queue(netdev, i);
trans_start = q->trans_start;
if (netif_xmit_stopped(q) &&
time_after(jiffies,
trans_start + netdev->watchdog_timeo)) {
hung_queue = i;
break;
}
}
if (i == netdev->num_tx_queues)
netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
else
/* now that we have an index, find the tx_ring struct */
for (i = 0; i < vsi->num_txq; i++)
if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
if (hung_queue == vsi->tx_rings[i]->q_index) {
tx_ring = vsi->tx_rings[i];
break;
}
/* Reset recovery level if enough time has elapsed after last timeout.
* Also ensure no new reset action happens before next timeout period.
*/
if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ * 20)))
pf->tx_timeout_recovery_level = 1;
else if (time_before(jiffies, (pf->tx_timeout_last_recovery +
netdev->watchdog_timeo)))
return;
if (tx_ring) {
struct ice_hw *hw = &pf->hw;
u32 head, val = 0;
head = (rd32(hw, QTX_COMM_HEAD(vsi->txq_map[hung_queue])) &
QTX_COMM_HEAD_HEAD_M) >> QTX_COMM_HEAD_HEAD_S;
/* Read interrupt register */
if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags))
val = rd32(hw,
GLINT_DYN_CTL(tx_ring->q_vector->v_idx +
tx_ring->vsi->hw_base_vector));
netdev_info(netdev, "tx_timeout: VSI_num: %d, Q %d, NTC: 0x%x, HW_HEAD: 0x%x, NTU: 0x%x, INT: 0x%x\n",
vsi->vsi_num, hung_queue, tx_ring->next_to_clean,
head, tx_ring->next_to_use, val);
}
pf->tx_timeout_last_recovery = jiffies;
netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
pf->tx_timeout_recovery_level, hung_queue);
switch (pf->tx_timeout_recovery_level) {
case 1:
set_bit(__ICE_PFR_REQ, pf->state);
break;
case 2:
set_bit(__ICE_CORER_REQ, pf->state);
break;
case 3:
set_bit(__ICE_GLOBR_REQ, pf->state);
break;
default:
netdev_err(netdev, "tx_timeout recovery unsuccessful, device is in unrecoverable state.\n");
set_bit(__ICE_DOWN, pf->state);
set_bit(__ICE_NEEDS_RESTART, vsi->state);
set_bit(__ICE_SERVICE_DIS, pf->state);
break;
}
ice_service_task_schedule(pf);
pf->tx_timeout_recovery_level++;
}
/**
* ice_open - Called when a network interface becomes 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 is enabled,
* and the stack is notified that the interface is ready.
*
* Returns 0 on success, negative value on failure
*/
static int ice_open(struct net_device *netdev)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
int err;
if (test_bit(__ICE_NEEDS_RESTART, vsi->back->state)) {
netdev_err(netdev, "driver needs to be unloaded and reloaded\n");
return -EIO;
}
netif_carrier_off(netdev);
err = ice_force_phys_link_state(vsi, true);
if (err) {
netdev_err(netdev,
"Failed to set physical link up, error %d\n", err);
return err;
}
err = ice_vsi_open(vsi);
if (err)
netdev_err(netdev, "Failed to open VSI 0x%04X on switch 0x%04X\n",
vsi->vsi_num, vsi->vsw->sw_id);
return err;
}
/**
* ice_stop - Disables a network interface
* @netdev: network interface device structure
*
* The stop entry point is called when an interface is de-activated by the OS,
* and the netdevice enters the DOWN state. The hardware is still under the
* driver's control, but the netdev interface is disabled.
*
* Returns success only - not allowed to fail
*/
static int ice_stop(struct net_device *netdev)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
ice_vsi_close(vsi);
return 0;
}
/**
* ice_features_check - Validate encapsulated packet conforms to limits
* @skb: skb buffer
* @netdev: This port's netdev
* @features: Offload features that the stack believes apply
*/
static netdev_features_t
ice_features_check(struct sk_buff *skb,
struct net_device __always_unused *netdev,
netdev_features_t features)
{
size_t len;
/* No point in doing any of this if neither checksum nor GSO are
* being requested for this frame. We can rule out both by just
* checking for CHECKSUM_PARTIAL
*/
if (skb->ip_summed != CHECKSUM_PARTIAL)
return features;
/* We cannot support GSO if the MSS is going to be less than
* 64 bytes. If it is then we need to drop support for GSO.
*/
if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
features &= ~NETIF_F_GSO_MASK;
len = skb_network_header(skb) - skb->data;
if (len & ~(ICE_TXD_MACLEN_MAX))
goto out_rm_features;
len = skb_transport_header(skb) - skb_network_header(skb);
if (len & ~(ICE_TXD_IPLEN_MAX))
goto out_rm_features;
if (skb->encapsulation) {
len = skb_inner_network_header(skb) - skb_transport_header(skb);
if (len & ~(ICE_TXD_L4LEN_MAX))
goto out_rm_features;
len = skb_inner_transport_header(skb) -
skb_inner_network_header(skb);
if (len & ~(ICE_TXD_IPLEN_MAX))
goto out_rm_features;
}
return features;
out_rm_features:
return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}
static const struct net_device_ops ice_netdev_ops = {
.ndo_open = ice_open,
.ndo_stop = ice_stop,
.ndo_start_xmit = ice_start_xmit,
.ndo_features_check = ice_features_check,
.ndo_set_rx_mode = ice_set_rx_mode,
.ndo_set_mac_address = ice_set_mac_address,
.ndo_validate_addr = eth_validate_addr,
.ndo_change_mtu = ice_change_mtu,
.ndo_get_stats64 = ice_get_stats64,
.ndo_set_vf_spoofchk = ice_set_vf_spoofchk,
.ndo_set_vf_mac = ice_set_vf_mac,
.ndo_get_vf_config = ice_get_vf_cfg,
.ndo_set_vf_trust = ice_set_vf_trust,
.ndo_set_vf_vlan = ice_set_vf_port_vlan,
.ndo_set_vf_link_state = ice_set_vf_link_state,
.ndo_vlan_rx_add_vid = ice_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = ice_vlan_rx_kill_vid,
.ndo_set_features = ice_set_features,
.ndo_bridge_getlink = ice_bridge_getlink,
.ndo_bridge_setlink = ice_bridge_setlink,
.ndo_fdb_add = ice_fdb_add,
.ndo_fdb_del = ice_fdb_del,
.ndo_tx_timeout = ice_tx_timeout,
};
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