16e173d3bSMartin Habets // SPDX-License-Identifier: GPL-2.0-only
26e173d3bSMartin Habets /****************************************************************************
36e173d3bSMartin Habets * Driver for Solarflare network controllers and boards
46e173d3bSMartin Habets * Copyright 2005-2006 Fen Systems Ltd.
56e173d3bSMartin Habets * Copyright 2005-2013 Solarflare Communications Inc.
66e173d3bSMartin Habets */
76e173d3bSMartin Habets
86e173d3bSMartin Habets #include <linux/filter.h>
96e173d3bSMartin Habets #include <linux/module.h>
106e173d3bSMartin Habets #include <linux/pci.h>
116e173d3bSMartin Habets #include <linux/netdevice.h>
126e173d3bSMartin Habets #include <linux/etherdevice.h>
136e173d3bSMartin Habets #include <linux/delay.h>
146e173d3bSMartin Habets #include <linux/notifier.h>
156e173d3bSMartin Habets #include <linux/ip.h>
166e173d3bSMartin Habets #include <linux/tcp.h>
176e173d3bSMartin Habets #include <linux/in.h>
186e173d3bSMartin Habets #include <linux/ethtool.h>
196e173d3bSMartin Habets #include <linux/topology.h>
206e173d3bSMartin Habets #include <linux/gfp.h>
216e173d3bSMartin Habets #include <linux/interrupt.h>
226e173d3bSMartin Habets #include "net_driver.h"
236e173d3bSMartin Habets #include <net/gre.h>
246e173d3bSMartin Habets #include <net/udp_tunnel.h>
256e173d3bSMartin Habets #include "efx.h"
266e173d3bSMartin Habets #include "efx_common.h"
276e173d3bSMartin Habets #include "efx_channels.h"
286e173d3bSMartin Habets #include "rx_common.h"
296e173d3bSMartin Habets #include "tx_common.h"
306e173d3bSMartin Habets #include "nic.h"
316e173d3bSMartin Habets #include "io.h"
326e173d3bSMartin Habets #include "selftest.h"
336e173d3bSMartin Habets #include "sriov.h"
34c3743039SMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
35c3743039SMartin Habets #include "siena_sriov.h"
36c3743039SMartin Habets #endif
376e173d3bSMartin Habets
386e173d3bSMartin Habets #include "mcdi_port_common.h"
396e173d3bSMartin Habets #include "mcdi_pcol.h"
406e173d3bSMartin Habets #include "workarounds.h"
416e173d3bSMartin Habets
426e173d3bSMartin Habets /**************************************************************************
436e173d3bSMartin Habets *
446e173d3bSMartin Habets * Configurable values
456e173d3bSMartin Habets *
466e173d3bSMartin Habets *************************************************************************/
476e173d3bSMartin Habets
4871ad88f6SMartin Habets module_param_named(interrupt_mode, efx_siena_interrupt_mode, uint, 0444);
496e173d3bSMartin Habets MODULE_PARM_DESC(interrupt_mode,
506e173d3bSMartin Habets "Interrupt mode (0=>MSIX 1=>MSI 2=>legacy)");
516e173d3bSMartin Habets
5271ad88f6SMartin Habets module_param_named(rss_cpus, efx_siena_rss_cpus, uint, 0444);
536e173d3bSMartin Habets MODULE_PARM_DESC(rss_cpus, "Number of CPUs to use for Receive-Side Scaling");
546e173d3bSMartin Habets
556e173d3bSMartin Habets /*
566e173d3bSMartin Habets * Use separate channels for TX and RX events
576e173d3bSMartin Habets *
586e173d3bSMartin Habets * Set this to 1 to use separate channels for TX and RX. It allows us
596e173d3bSMartin Habets * to control interrupt affinity separately for TX and RX.
606e173d3bSMartin Habets *
616e173d3bSMartin Habets * This is only used in MSI-X interrupt mode
626e173d3bSMartin Habets */
637f9e4b2aSMartin Habets bool efx_siena_separate_tx_channels;
647f9e4b2aSMartin Habets module_param_named(efx_separate_tx_channels, efx_siena_separate_tx_channels,
657f9e4b2aSMartin Habets bool, 0444);
666e173d3bSMartin Habets MODULE_PARM_DESC(efx_separate_tx_channels,
676e173d3bSMartin Habets "Use separate channels for TX and RX");
686e173d3bSMartin Habets
696e173d3bSMartin Habets /* Initial interrupt moderation settings. They can be modified after
706e173d3bSMartin Habets * module load with ethtool.
716e173d3bSMartin Habets *
726e173d3bSMartin Habets * The default for RX should strike a balance between increasing the
736e173d3bSMartin Habets * round-trip latency and reducing overhead.
746e173d3bSMartin Habets */
756e173d3bSMartin Habets static unsigned int rx_irq_mod_usec = 60;
766e173d3bSMartin Habets
776e173d3bSMartin Habets /* Initial interrupt moderation settings. They can be modified after
786e173d3bSMartin Habets * module load with ethtool.
796e173d3bSMartin Habets *
806e173d3bSMartin Habets * This default is chosen to ensure that a 10G link does not go idle
816e173d3bSMartin Habets * while a TX queue is stopped after it has become full. A queue is
826e173d3bSMartin Habets * restarted when it drops below half full. The time this takes (assuming
836e173d3bSMartin Habets * worst case 3 descriptors per packet and 1024 descriptors) is
846e173d3bSMartin Habets * 512 / 3 * 1.2 = 205 usec.
856e173d3bSMartin Habets */
866e173d3bSMartin Habets static unsigned int tx_irq_mod_usec = 150;
876e173d3bSMartin Habets
886e173d3bSMartin Habets static bool phy_flash_cfg;
896e173d3bSMartin Habets module_param(phy_flash_cfg, bool, 0644);
906e173d3bSMartin Habets MODULE_PARM_DESC(phy_flash_cfg, "Set PHYs into reflash mode initially");
916e173d3bSMartin Habets
926e173d3bSMartin Habets static unsigned debug = (NETIF_MSG_DRV | NETIF_MSG_PROBE |
936e173d3bSMartin Habets NETIF_MSG_LINK | NETIF_MSG_IFDOWN |
946e173d3bSMartin Habets NETIF_MSG_IFUP | NETIF_MSG_RX_ERR |
956e173d3bSMartin Habets NETIF_MSG_TX_ERR | NETIF_MSG_HW);
966e173d3bSMartin Habets module_param(debug, uint, 0);
976e173d3bSMartin Habets MODULE_PARM_DESC(debug, "Bitmapped debugging message enable value");
986e173d3bSMartin Habets
996e173d3bSMartin Habets /**************************************************************************
1006e173d3bSMartin Habets *
1016e173d3bSMartin Habets * Utility functions and prototypes
1026e173d3bSMartin Habets *
1036e173d3bSMartin Habets *************************************************************************/
1046e173d3bSMartin Habets
1056e173d3bSMartin Habets static void efx_remove_port(struct efx_nic *efx);
1066e173d3bSMartin Habets static int efx_xdp_setup_prog(struct efx_nic *efx, struct bpf_prog *prog);
1076e173d3bSMartin Habets static int efx_xdp(struct net_device *dev, struct netdev_bpf *xdp);
1086e173d3bSMartin Habets static int efx_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **xdpfs,
1096e173d3bSMartin Habets u32 flags);
1106e173d3bSMartin Habets
1116e173d3bSMartin Habets #define EFX_ASSERT_RESET_SERIALISED(efx) \
1126e173d3bSMartin Habets do { \
1136e173d3bSMartin Habets if ((efx->state == STATE_READY) || \
1146e173d3bSMartin Habets (efx->state == STATE_RECOVERY) || \
1156e173d3bSMartin Habets (efx->state == STATE_DISABLED)) \
1166e173d3bSMartin Habets ASSERT_RTNL(); \
1176e173d3bSMartin Habets } while (0)
1186e173d3bSMartin Habets
1196e173d3bSMartin Habets /**************************************************************************
1206e173d3bSMartin Habets *
1216e173d3bSMartin Habets * Port handling
1226e173d3bSMartin Habets *
1236e173d3bSMartin Habets **************************************************************************/
1246e173d3bSMartin Habets
1256e173d3bSMartin Habets static void efx_fini_port(struct efx_nic *efx);
1266e173d3bSMartin Habets
efx_probe_port(struct efx_nic * efx)1276e173d3bSMartin Habets static int efx_probe_port(struct efx_nic *efx)
1286e173d3bSMartin Habets {
1296e173d3bSMartin Habets int rc;
1306e173d3bSMartin Habets
1316e173d3bSMartin Habets netif_dbg(efx, probe, efx->net_dev, "create port\n");
1326e173d3bSMartin Habets
1336e173d3bSMartin Habets if (phy_flash_cfg)
1346e173d3bSMartin Habets efx->phy_mode = PHY_MODE_SPECIAL;
1356e173d3bSMartin Habets
1366e173d3bSMartin Habets /* Connect up MAC/PHY operations table */
1376e173d3bSMartin Habets rc = efx->type->probe_port(efx);
1386e173d3bSMartin Habets if (rc)
1396e173d3bSMartin Habets return rc;
1406e173d3bSMartin Habets
1416e173d3bSMartin Habets /* Initialise MAC address to permanent address */
1426e173d3bSMartin Habets eth_hw_addr_set(efx->net_dev, efx->net_dev->perm_addr);
1436e173d3bSMartin Habets
1446e173d3bSMartin Habets return 0;
1456e173d3bSMartin Habets }
1466e173d3bSMartin Habets
efx_init_port(struct efx_nic * efx)1476e173d3bSMartin Habets static int efx_init_port(struct efx_nic *efx)
1486e173d3bSMartin Habets {
1496e173d3bSMartin Habets int rc;
1506e173d3bSMartin Habets
1516e173d3bSMartin Habets netif_dbg(efx, drv, efx->net_dev, "init port\n");
1526e173d3bSMartin Habets
1536e173d3bSMartin Habets mutex_lock(&efx->mac_lock);
1546e173d3bSMartin Habets
1556e173d3bSMartin Habets efx->port_initialized = true;
1566e173d3bSMartin Habets
1576e173d3bSMartin Habets /* Ensure the PHY advertises the correct flow control settings */
1584d49e5cdSMartin Habets rc = efx_siena_mcdi_port_reconfigure(efx);
1596e173d3bSMartin Habets if (rc && rc != -EPERM)
1606e173d3bSMartin Habets goto fail;
1616e173d3bSMartin Habets
1626e173d3bSMartin Habets mutex_unlock(&efx->mac_lock);
1636e173d3bSMartin Habets return 0;
1646e173d3bSMartin Habets
1656e173d3bSMartin Habets fail:
1666e173d3bSMartin Habets mutex_unlock(&efx->mac_lock);
1676e173d3bSMartin Habets return rc;
1686e173d3bSMartin Habets }
1696e173d3bSMartin Habets
efx_fini_port(struct efx_nic * efx)1706e173d3bSMartin Habets static void efx_fini_port(struct efx_nic *efx)
1716e173d3bSMartin Habets {
1726e173d3bSMartin Habets netif_dbg(efx, drv, efx->net_dev, "shut down port\n");
1736e173d3bSMartin Habets
1746e173d3bSMartin Habets if (!efx->port_initialized)
1756e173d3bSMartin Habets return;
1766e173d3bSMartin Habets
1776e173d3bSMartin Habets efx->port_initialized = false;
1786e173d3bSMartin Habets
1796e173d3bSMartin Habets efx->link_state.up = false;
18071ad88f6SMartin Habets efx_siena_link_status_changed(efx);
1816e173d3bSMartin Habets }
1826e173d3bSMartin Habets
efx_remove_port(struct efx_nic * efx)1836e173d3bSMartin Habets static void efx_remove_port(struct efx_nic *efx)
1846e173d3bSMartin Habets {
1856e173d3bSMartin Habets netif_dbg(efx, drv, efx->net_dev, "destroying port\n");
1866e173d3bSMartin Habets
1876e173d3bSMartin Habets efx->type->remove_port(efx);
1886e173d3bSMartin Habets }
1896e173d3bSMartin Habets
1906e173d3bSMartin Habets /**************************************************************************
1916e173d3bSMartin Habets *
1926e173d3bSMartin Habets * NIC handling
1936e173d3bSMartin Habets *
1946e173d3bSMartin Habets **************************************************************************/
1956e173d3bSMartin Habets
1966e173d3bSMartin Habets static LIST_HEAD(efx_primary_list);
1976e173d3bSMartin Habets static LIST_HEAD(efx_unassociated_list);
1986e173d3bSMartin Habets
efx_same_controller(struct efx_nic * left,struct efx_nic * right)1996e173d3bSMartin Habets static bool efx_same_controller(struct efx_nic *left, struct efx_nic *right)
2006e173d3bSMartin Habets {
2016e173d3bSMartin Habets return left->type == right->type &&
2026e173d3bSMartin Habets left->vpd_sn && right->vpd_sn &&
2036e173d3bSMartin Habets !strcmp(left->vpd_sn, right->vpd_sn);
2046e173d3bSMartin Habets }
2056e173d3bSMartin Habets
efx_associate(struct efx_nic * efx)2066e173d3bSMartin Habets static void efx_associate(struct efx_nic *efx)
2076e173d3bSMartin Habets {
2086e173d3bSMartin Habets struct efx_nic *other, *next;
2096e173d3bSMartin Habets
2106e173d3bSMartin Habets if (efx->primary == efx) {
2116e173d3bSMartin Habets /* Adding primary function; look for secondaries */
2126e173d3bSMartin Habets
2136e173d3bSMartin Habets netif_dbg(efx, probe, efx->net_dev, "adding to primary list\n");
2146e173d3bSMartin Habets list_add_tail(&efx->node, &efx_primary_list);
2156e173d3bSMartin Habets
2166e173d3bSMartin Habets list_for_each_entry_safe(other, next, &efx_unassociated_list,
2176e173d3bSMartin Habets node) {
2186e173d3bSMartin Habets if (efx_same_controller(efx, other)) {
2196e173d3bSMartin Habets list_del(&other->node);
2206e173d3bSMartin Habets netif_dbg(other, probe, other->net_dev,
2216e173d3bSMartin Habets "moving to secondary list of %s %s\n",
2226e173d3bSMartin Habets pci_name(efx->pci_dev),
2236e173d3bSMartin Habets efx->net_dev->name);
2246e173d3bSMartin Habets list_add_tail(&other->node,
2256e173d3bSMartin Habets &efx->secondary_list);
2266e173d3bSMartin Habets other->primary = efx;
2276e173d3bSMartin Habets }
2286e173d3bSMartin Habets }
2296e173d3bSMartin Habets } else {
2306e173d3bSMartin Habets /* Adding secondary function; look for primary */
2316e173d3bSMartin Habets
2326e173d3bSMartin Habets list_for_each_entry(other, &efx_primary_list, node) {
2336e173d3bSMartin Habets if (efx_same_controller(efx, other)) {
2346e173d3bSMartin Habets netif_dbg(efx, probe, efx->net_dev,
2356e173d3bSMartin Habets "adding to secondary list of %s %s\n",
2366e173d3bSMartin Habets pci_name(other->pci_dev),
2376e173d3bSMartin Habets other->net_dev->name);
2386e173d3bSMartin Habets list_add_tail(&efx->node,
2396e173d3bSMartin Habets &other->secondary_list);
2406e173d3bSMartin Habets efx->primary = other;
2416e173d3bSMartin Habets return;
2426e173d3bSMartin Habets }
2436e173d3bSMartin Habets }
2446e173d3bSMartin Habets
2456e173d3bSMartin Habets netif_dbg(efx, probe, efx->net_dev,
2466e173d3bSMartin Habets "adding to unassociated list\n");
2476e173d3bSMartin Habets list_add_tail(&efx->node, &efx_unassociated_list);
2486e173d3bSMartin Habets }
2496e173d3bSMartin Habets }
2506e173d3bSMartin Habets
efx_dissociate(struct efx_nic * efx)2516e173d3bSMartin Habets static void efx_dissociate(struct efx_nic *efx)
2526e173d3bSMartin Habets {
2536e173d3bSMartin Habets struct efx_nic *other, *next;
2546e173d3bSMartin Habets
2556e173d3bSMartin Habets list_del(&efx->node);
2566e173d3bSMartin Habets efx->primary = NULL;
2576e173d3bSMartin Habets
2586e173d3bSMartin Habets list_for_each_entry_safe(other, next, &efx->secondary_list, node) {
2596e173d3bSMartin Habets list_del(&other->node);
2606e173d3bSMartin Habets netif_dbg(other, probe, other->net_dev,
2616e173d3bSMartin Habets "moving to unassociated list\n");
2626e173d3bSMartin Habets list_add_tail(&other->node, &efx_unassociated_list);
2636e173d3bSMartin Habets other->primary = NULL;
2646e173d3bSMartin Habets }
2656e173d3bSMartin Habets }
2666e173d3bSMartin Habets
efx_probe_nic(struct efx_nic * efx)2676e173d3bSMartin Habets static int efx_probe_nic(struct efx_nic *efx)
2686e173d3bSMartin Habets {
2696e173d3bSMartin Habets int rc;
2706e173d3bSMartin Habets
2716e173d3bSMartin Habets netif_dbg(efx, probe, efx->net_dev, "creating NIC\n");
2726e173d3bSMartin Habets
2736e173d3bSMartin Habets /* Carry out hardware-type specific initialisation */
2746e173d3bSMartin Habets rc = efx->type->probe(efx);
2756e173d3bSMartin Habets if (rc)
2766e173d3bSMartin Habets return rc;
2776e173d3bSMartin Habets
2786e173d3bSMartin Habets do {
2796e173d3bSMartin Habets if (!efx->max_channels || !efx->max_tx_channels) {
2806e173d3bSMartin Habets netif_err(efx, drv, efx->net_dev,
2816e173d3bSMartin Habets "Insufficient resources to allocate"
2826e173d3bSMartin Habets " any channels\n");
2836e173d3bSMartin Habets rc = -ENOSPC;
2846e173d3bSMartin Habets goto fail1;
2856e173d3bSMartin Habets }
2866e173d3bSMartin Habets
2876e173d3bSMartin Habets /* Determine the number of channels and queues by trying
2886e173d3bSMartin Habets * to hook in MSI-X interrupts.
2896e173d3bSMartin Habets */
29071ad88f6SMartin Habets rc = efx_siena_probe_interrupts(efx);
2916e173d3bSMartin Habets if (rc)
2926e173d3bSMartin Habets goto fail1;
2936e173d3bSMartin Habets
29471ad88f6SMartin Habets rc = efx_siena_set_channels(efx);
2956e173d3bSMartin Habets if (rc)
2966e173d3bSMartin Habets goto fail1;
2976e173d3bSMartin Habets
2986e173d3bSMartin Habets /* dimension_resources can fail with EAGAIN */
2996e173d3bSMartin Habets rc = efx->type->dimension_resources(efx);
3006e173d3bSMartin Habets if (rc != 0 && rc != -EAGAIN)
3016e173d3bSMartin Habets goto fail2;
3026e173d3bSMartin Habets
3036e173d3bSMartin Habets if (rc == -EAGAIN)
3046e173d3bSMartin Habets /* try again with new max_channels */
30571ad88f6SMartin Habets efx_siena_remove_interrupts(efx);
3066e173d3bSMartin Habets
3076e173d3bSMartin Habets } while (rc == -EAGAIN);
3086e173d3bSMartin Habets
3096e173d3bSMartin Habets if (efx->n_channels > 1)
3106e173d3bSMartin Habets netdev_rss_key_fill(efx->rss_context.rx_hash_key,
3116e173d3bSMartin Habets sizeof(efx->rss_context.rx_hash_key));
3127f9e4b2aSMartin Habets efx_siena_set_default_rx_indir_table(efx, &efx->rss_context);
3136e173d3bSMartin Habets
3146e173d3bSMartin Habets /* Initialise the interrupt moderation settings */
3156e173d3bSMartin Habets efx->irq_mod_step_us = DIV_ROUND_UP(efx->timer_quantum_ns, 1000);
31671ad88f6SMartin Habets efx_siena_init_irq_moderation(efx, tx_irq_mod_usec, rx_irq_mod_usec,
31771ad88f6SMartin Habets true, true);
3186e173d3bSMartin Habets
3196e173d3bSMartin Habets return 0;
3206e173d3bSMartin Habets
3216e173d3bSMartin Habets fail2:
32271ad88f6SMartin Habets efx_siena_remove_interrupts(efx);
3236e173d3bSMartin Habets fail1:
3246e173d3bSMartin Habets efx->type->remove(efx);
3256e173d3bSMartin Habets return rc;
3266e173d3bSMartin Habets }
3276e173d3bSMartin Habets
efx_remove_nic(struct efx_nic * efx)3286e173d3bSMartin Habets static void efx_remove_nic(struct efx_nic *efx)
3296e173d3bSMartin Habets {
3306e173d3bSMartin Habets netif_dbg(efx, drv, efx->net_dev, "destroying NIC\n");
3316e173d3bSMartin Habets
33271ad88f6SMartin Habets efx_siena_remove_interrupts(efx);
3336e173d3bSMartin Habets efx->type->remove(efx);
3346e173d3bSMartin Habets }
3356e173d3bSMartin Habets
3366e173d3bSMartin Habets /**************************************************************************
3376e173d3bSMartin Habets *
3386e173d3bSMartin Habets * NIC startup/shutdown
3396e173d3bSMartin Habets *
3406e173d3bSMartin Habets *************************************************************************/
3416e173d3bSMartin Habets
efx_probe_all(struct efx_nic * efx)3426e173d3bSMartin Habets static int efx_probe_all(struct efx_nic *efx)
3436e173d3bSMartin Habets {
3446e173d3bSMartin Habets int rc;
3456e173d3bSMartin Habets
3466e173d3bSMartin Habets rc = efx_probe_nic(efx);
3476e173d3bSMartin Habets if (rc) {
3486e173d3bSMartin Habets netif_err(efx, probe, efx->net_dev, "failed to create NIC\n");
3496e173d3bSMartin Habets goto fail1;
3506e173d3bSMartin Habets }
3516e173d3bSMartin Habets
3526e173d3bSMartin Habets rc = efx_probe_port(efx);
3536e173d3bSMartin Habets if (rc) {
3546e173d3bSMartin Habets netif_err(efx, probe, efx->net_dev, "failed to create port\n");
3556e173d3bSMartin Habets goto fail2;
3566e173d3bSMartin Habets }
3576e173d3bSMartin Habets
3586e173d3bSMartin Habets BUILD_BUG_ON(EFX_DEFAULT_DMAQ_SIZE < EFX_RXQ_MIN_ENT);
3596e173d3bSMartin Habets if (WARN_ON(EFX_DEFAULT_DMAQ_SIZE < EFX_TXQ_MIN_ENT(efx))) {
3606e173d3bSMartin Habets rc = -EINVAL;
3616e173d3bSMartin Habets goto fail3;
3626e173d3bSMartin Habets }
3636e173d3bSMartin Habets
364dfb1cfbdSMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
3656e173d3bSMartin Habets rc = efx->type->vswitching_probe(efx);
3666e173d3bSMartin Habets if (rc) /* not fatal; the PF will still work fine */
3676e173d3bSMartin Habets netif_warn(efx, probe, efx->net_dev,
3686e173d3bSMartin Habets "failed to setup vswitching rc=%d;"
3696e173d3bSMartin Habets " VFs may not function\n", rc);
3706e173d3bSMartin Habets #endif
3716e173d3bSMartin Habets
3727f9e4b2aSMartin Habets rc = efx_siena_probe_filters(efx);
3736e173d3bSMartin Habets if (rc) {
3746e173d3bSMartin Habets netif_err(efx, probe, efx->net_dev,
3756e173d3bSMartin Habets "failed to create filter tables\n");
3766e173d3bSMartin Habets goto fail4;
3776e173d3bSMartin Habets }
3786e173d3bSMartin Habets
37971ad88f6SMartin Habets rc = efx_siena_probe_channels(efx);
3806e173d3bSMartin Habets if (rc)
3816e173d3bSMartin Habets goto fail5;
3826e173d3bSMartin Habets
3836e173d3bSMartin Habets return 0;
3846e173d3bSMartin Habets
3856e173d3bSMartin Habets fail5:
3867f9e4b2aSMartin Habets efx_siena_remove_filters(efx);
3876e173d3bSMartin Habets fail4:
388dfb1cfbdSMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
3896e173d3bSMartin Habets efx->type->vswitching_remove(efx);
3906e173d3bSMartin Habets #endif
3916e173d3bSMartin Habets fail3:
3926e173d3bSMartin Habets efx_remove_port(efx);
3936e173d3bSMartin Habets fail2:
3946e173d3bSMartin Habets efx_remove_nic(efx);
3956e173d3bSMartin Habets fail1:
3966e173d3bSMartin Habets return rc;
3976e173d3bSMartin Habets }
3986e173d3bSMartin Habets
efx_remove_all(struct efx_nic * efx)3996e173d3bSMartin Habets static void efx_remove_all(struct efx_nic *efx)
4006e173d3bSMartin Habets {
4016e173d3bSMartin Habets rtnl_lock();
4026e173d3bSMartin Habets efx_xdp_setup_prog(efx, NULL);
4036e173d3bSMartin Habets rtnl_unlock();
4046e173d3bSMartin Habets
40571ad88f6SMartin Habets efx_siena_remove_channels(efx);
4067f9e4b2aSMartin Habets efx_siena_remove_filters(efx);
407dfb1cfbdSMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
4086e173d3bSMartin Habets efx->type->vswitching_remove(efx);
4096e173d3bSMartin Habets #endif
4106e173d3bSMartin Habets efx_remove_port(efx);
4116e173d3bSMartin Habets efx_remove_nic(efx);
4126e173d3bSMartin Habets }
4136e173d3bSMartin Habets
4146e173d3bSMartin Habets /**************************************************************************
4156e173d3bSMartin Habets *
4166e173d3bSMartin Habets * Interrupt moderation
4176e173d3bSMartin Habets *
4186e173d3bSMartin Habets **************************************************************************/
efx_siena_usecs_to_ticks(struct efx_nic * efx,unsigned int usecs)41971ad88f6SMartin Habets unsigned int efx_siena_usecs_to_ticks(struct efx_nic *efx, unsigned int usecs)
4206e173d3bSMartin Habets {
4216e173d3bSMartin Habets if (usecs == 0)
4226e173d3bSMartin Habets return 0;
4236e173d3bSMartin Habets if (usecs * 1000 < efx->timer_quantum_ns)
4246e173d3bSMartin Habets return 1; /* never round down to 0 */
4256e173d3bSMartin Habets return usecs * 1000 / efx->timer_quantum_ns;
4266e173d3bSMartin Habets }
4276e173d3bSMartin Habets
4286e173d3bSMartin Habets /* Set interrupt moderation parameters */
efx_siena_init_irq_moderation(struct efx_nic * efx,unsigned int tx_usecs,unsigned int rx_usecs,bool rx_adaptive,bool rx_may_override_tx)42971ad88f6SMartin Habets int efx_siena_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
4306e173d3bSMartin Habets unsigned int rx_usecs, bool rx_adaptive,
4316e173d3bSMartin Habets bool rx_may_override_tx)
4326e173d3bSMartin Habets {
4336e173d3bSMartin Habets struct efx_channel *channel;
4346e173d3bSMartin Habets unsigned int timer_max_us;
4356e173d3bSMartin Habets
4366e173d3bSMartin Habets EFX_ASSERT_RESET_SERIALISED(efx);
4376e173d3bSMartin Habets
4386e173d3bSMartin Habets timer_max_us = efx->timer_max_ns / 1000;
4396e173d3bSMartin Habets
4406e173d3bSMartin Habets if (tx_usecs > timer_max_us || rx_usecs > timer_max_us)
4416e173d3bSMartin Habets return -EINVAL;
4426e173d3bSMartin Habets
4436e173d3bSMartin Habets if (tx_usecs != rx_usecs && efx->tx_channel_offset == 0 &&
4446e173d3bSMartin Habets !rx_may_override_tx) {
4456e173d3bSMartin Habets netif_err(efx, drv, efx->net_dev, "Channels are shared. "
4466e173d3bSMartin Habets "RX and TX IRQ moderation must be equal\n");
4476e173d3bSMartin Habets return -EINVAL;
4486e173d3bSMartin Habets }
4496e173d3bSMartin Habets
4506e173d3bSMartin Habets efx->irq_rx_adaptive = rx_adaptive;
4516e173d3bSMartin Habets efx->irq_rx_moderation_us = rx_usecs;
4526e173d3bSMartin Habets efx_for_each_channel(channel, efx) {
4536e173d3bSMartin Habets if (efx_channel_has_rx_queue(channel))
4546e173d3bSMartin Habets channel->irq_moderation_us = rx_usecs;
4556e173d3bSMartin Habets else if (efx_channel_has_tx_queues(channel))
4566e173d3bSMartin Habets channel->irq_moderation_us = tx_usecs;
4576e173d3bSMartin Habets else if (efx_channel_is_xdp_tx(channel))
4586e173d3bSMartin Habets channel->irq_moderation_us = tx_usecs;
4596e173d3bSMartin Habets }
4606e173d3bSMartin Habets
4616e173d3bSMartin Habets return 0;
4626e173d3bSMartin Habets }
4636e173d3bSMartin Habets
efx_siena_get_irq_moderation(struct efx_nic * efx,unsigned int * tx_usecs,unsigned int * rx_usecs,bool * rx_adaptive)46471ad88f6SMartin Habets void efx_siena_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
4656e173d3bSMartin Habets unsigned int *rx_usecs, bool *rx_adaptive)
4666e173d3bSMartin Habets {
4676e173d3bSMartin Habets *rx_adaptive = efx->irq_rx_adaptive;
4686e173d3bSMartin Habets *rx_usecs = efx->irq_rx_moderation_us;
4696e173d3bSMartin Habets
4706e173d3bSMartin Habets /* If channels are shared between RX and TX, so is IRQ
4716e173d3bSMartin Habets * moderation. Otherwise, IRQ moderation is the same for all
4726e173d3bSMartin Habets * TX channels and is not adaptive.
4736e173d3bSMartin Habets */
4746e173d3bSMartin Habets if (efx->tx_channel_offset == 0) {
4756e173d3bSMartin Habets *tx_usecs = *rx_usecs;
4766e173d3bSMartin Habets } else {
4776e173d3bSMartin Habets struct efx_channel *tx_channel;
4786e173d3bSMartin Habets
4796e173d3bSMartin Habets tx_channel = efx->channel[efx->tx_channel_offset];
4806e173d3bSMartin Habets *tx_usecs = tx_channel->irq_moderation_us;
4816e173d3bSMartin Habets }
4826e173d3bSMartin Habets }
4836e173d3bSMartin Habets
4846e173d3bSMartin Habets /**************************************************************************
4856e173d3bSMartin Habets *
4866e173d3bSMartin Habets * ioctls
4876e173d3bSMartin Habets *
4886e173d3bSMartin Habets *************************************************************************/
4896e173d3bSMartin Habets
4906e173d3bSMartin Habets /* Net device ioctl
4916e173d3bSMartin Habets * Context: process, rtnl_lock() held.
4926e173d3bSMartin Habets */
efx_ioctl(struct net_device * net_dev,struct ifreq * ifr,int cmd)4936e173d3bSMartin Habets static int efx_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd)
4946e173d3bSMartin Habets {
4956e173d3bSMartin Habets struct efx_nic *efx = netdev_priv(net_dev);
4966e173d3bSMartin Habets struct mii_ioctl_data *data = if_mii(ifr);
4976e173d3bSMartin Habets
4986e173d3bSMartin Habets if (cmd == SIOCSHWTSTAMP)
49995e96f77SMartin Habets return efx_siena_ptp_set_ts_config(efx, ifr);
5006e173d3bSMartin Habets if (cmd == SIOCGHWTSTAMP)
50195e96f77SMartin Habets return efx_siena_ptp_get_ts_config(efx, ifr);
5026e173d3bSMartin Habets
5036e173d3bSMartin Habets /* Convert phy_id from older PRTAD/DEVAD format */
5046e173d3bSMartin Habets if ((cmd == SIOCGMIIREG || cmd == SIOCSMIIREG) &&
5056e173d3bSMartin Habets (data->phy_id & 0xfc00) == 0x0400)
5066e173d3bSMartin Habets data->phy_id ^= MDIO_PHY_ID_C45 | 0x0400;
5076e173d3bSMartin Habets
5086e173d3bSMartin Habets return mdio_mii_ioctl(&efx->mdio, data, cmd);
5096e173d3bSMartin Habets }
5106e173d3bSMartin Habets
5116e173d3bSMartin Habets /**************************************************************************
5126e173d3bSMartin Habets *
5136e173d3bSMartin Habets * Kernel net device interface
5146e173d3bSMartin Habets *
5156e173d3bSMartin Habets *************************************************************************/
5166e173d3bSMartin Habets
5176e173d3bSMartin Habets /* Context: process, rtnl_lock() held. */
efx_net_open(struct net_device * net_dev)51871ad88f6SMartin Habets static int efx_net_open(struct net_device *net_dev)
5196e173d3bSMartin Habets {
5206e173d3bSMartin Habets struct efx_nic *efx = netdev_priv(net_dev);
5216e173d3bSMartin Habets int rc;
5226e173d3bSMartin Habets
5236e173d3bSMartin Habets netif_dbg(efx, ifup, efx->net_dev, "opening device on CPU %d\n",
5246e173d3bSMartin Habets raw_smp_processor_id());
5256e173d3bSMartin Habets
5266e173d3bSMartin Habets rc = efx_check_disabled(efx);
5276e173d3bSMartin Habets if (rc)
5286e173d3bSMartin Habets return rc;
5296e173d3bSMartin Habets if (efx->phy_mode & PHY_MODE_SPECIAL)
5306e173d3bSMartin Habets return -EBUSY;
5314d49e5cdSMartin Habets if (efx_siena_mcdi_poll_reboot(efx) && efx_siena_reset(efx, RESET_TYPE_ALL))
5326e173d3bSMartin Habets return -EIO;
5336e173d3bSMartin Habets
5346e173d3bSMartin Habets /* Notify the kernel of the link state polled during driver load,
5356e173d3bSMartin Habets * before the monitor starts running */
53671ad88f6SMartin Habets efx_siena_link_status_changed(efx);
5376e173d3bSMartin Habets
53871ad88f6SMartin Habets efx_siena_start_all(efx);
5396e173d3bSMartin Habets if (efx->state == STATE_DISABLED || efx->reset_pending)
5406e173d3bSMartin Habets netif_device_detach(efx->net_dev);
54195e96f77SMartin Habets efx_siena_selftest_async_start(efx);
5426e173d3bSMartin Habets return 0;
5436e173d3bSMartin Habets }
5446e173d3bSMartin Habets
5456e173d3bSMartin Habets /* Context: process, rtnl_lock() held.
5466e173d3bSMartin Habets * Note that the kernel will ignore our return code; this method
5476e173d3bSMartin Habets * should really be a void.
5486e173d3bSMartin Habets */
efx_net_stop(struct net_device * net_dev)54971ad88f6SMartin Habets static int efx_net_stop(struct net_device *net_dev)
5506e173d3bSMartin Habets {
5516e173d3bSMartin Habets struct efx_nic *efx = netdev_priv(net_dev);
5526e173d3bSMartin Habets
5536e173d3bSMartin Habets netif_dbg(efx, ifdown, efx->net_dev, "closing on CPU %d\n",
5546e173d3bSMartin Habets raw_smp_processor_id());
5556e173d3bSMartin Habets
5566e173d3bSMartin Habets /* Stop the device and flush all the channels */
55771ad88f6SMartin Habets efx_siena_stop_all(efx);
5586e173d3bSMartin Habets
5596e173d3bSMartin Habets return 0;
5606e173d3bSMartin Habets }
5616e173d3bSMartin Habets
efx_vlan_rx_add_vid(struct net_device * net_dev,__be16 proto,u16 vid)5626e173d3bSMartin Habets static int efx_vlan_rx_add_vid(struct net_device *net_dev, __be16 proto, u16 vid)
5636e173d3bSMartin Habets {
5646e173d3bSMartin Habets struct efx_nic *efx = netdev_priv(net_dev);
5656e173d3bSMartin Habets
5666e173d3bSMartin Habets if (efx->type->vlan_rx_add_vid)
5676e173d3bSMartin Habets return efx->type->vlan_rx_add_vid(efx, proto, vid);
5686e173d3bSMartin Habets else
5696e173d3bSMartin Habets return -EOPNOTSUPP;
5706e173d3bSMartin Habets }
5716e173d3bSMartin Habets
efx_vlan_rx_kill_vid(struct net_device * net_dev,__be16 proto,u16 vid)5726e173d3bSMartin Habets static int efx_vlan_rx_kill_vid(struct net_device *net_dev, __be16 proto, u16 vid)
5736e173d3bSMartin Habets {
5746e173d3bSMartin Habets struct efx_nic *efx = netdev_priv(net_dev);
5756e173d3bSMartin Habets
5766e173d3bSMartin Habets if (efx->type->vlan_rx_kill_vid)
5776e173d3bSMartin Habets return efx->type->vlan_rx_kill_vid(efx, proto, vid);
5786e173d3bSMartin Habets else
5796e173d3bSMartin Habets return -EOPNOTSUPP;
5806e173d3bSMartin Habets }
5816e173d3bSMartin Habets
5826e173d3bSMartin Habets static const struct net_device_ops efx_netdev_ops = {
5836e173d3bSMartin Habets .ndo_open = efx_net_open,
5846e173d3bSMartin Habets .ndo_stop = efx_net_stop,
58571ad88f6SMartin Habets .ndo_get_stats64 = efx_siena_net_stats,
58671ad88f6SMartin Habets .ndo_tx_timeout = efx_siena_watchdog,
58771ad88f6SMartin Habets .ndo_start_xmit = efx_siena_hard_start_xmit,
5886e173d3bSMartin Habets .ndo_validate_addr = eth_validate_addr,
5896e173d3bSMartin Habets .ndo_eth_ioctl = efx_ioctl,
59071ad88f6SMartin Habets .ndo_change_mtu = efx_siena_change_mtu,
59171ad88f6SMartin Habets .ndo_set_mac_address = efx_siena_set_mac_address,
59271ad88f6SMartin Habets .ndo_set_rx_mode = efx_siena_set_rx_mode,
59371ad88f6SMartin Habets .ndo_set_features = efx_siena_set_features,
59471ad88f6SMartin Habets .ndo_features_check = efx_siena_features_check,
5956e173d3bSMartin Habets .ndo_vlan_rx_add_vid = efx_vlan_rx_add_vid,
5966e173d3bSMartin Habets .ndo_vlan_rx_kill_vid = efx_vlan_rx_kill_vid,
597dfb1cfbdSMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
5986e173d3bSMartin Habets .ndo_set_vf_mac = efx_sriov_set_vf_mac,
5996e173d3bSMartin Habets .ndo_set_vf_vlan = efx_sriov_set_vf_vlan,
6006e173d3bSMartin Habets .ndo_set_vf_spoofchk = efx_sriov_set_vf_spoofchk,
6016e173d3bSMartin Habets .ndo_get_vf_config = efx_sriov_get_vf_config,
6026e173d3bSMartin Habets .ndo_set_vf_link_state = efx_sriov_set_vf_link_state,
6036e173d3bSMartin Habets #endif
60471ad88f6SMartin Habets .ndo_get_phys_port_id = efx_siena_get_phys_port_id,
60571ad88f6SMartin Habets .ndo_get_phys_port_name = efx_siena_get_phys_port_name,
60671ad88f6SMartin Habets .ndo_setup_tc = efx_siena_setup_tc,
6076e173d3bSMartin Habets #ifdef CONFIG_RFS_ACCEL
6087f9e4b2aSMartin Habets .ndo_rx_flow_steer = efx_siena_filter_rfs,
6096e173d3bSMartin Habets #endif
6106e173d3bSMartin Habets .ndo_xdp_xmit = efx_xdp_xmit,
6116e173d3bSMartin Habets .ndo_bpf = efx_xdp
6126e173d3bSMartin Habets };
6136e173d3bSMartin Habets
efx_xdp_setup_prog(struct efx_nic * efx,struct bpf_prog * prog)6146e173d3bSMartin Habets static int efx_xdp_setup_prog(struct efx_nic *efx, struct bpf_prog *prog)
6156e173d3bSMartin Habets {
6166e173d3bSMartin Habets struct bpf_prog *old_prog;
6176e173d3bSMartin Habets
6186e173d3bSMartin Habets if (efx->xdp_rxq_info_failed) {
6196e173d3bSMartin Habets netif_err(efx, drv, efx->net_dev,
6206e173d3bSMartin Habets "Unable to bind XDP program due to previous failure of rxq_info\n");
6216e173d3bSMartin Habets return -EINVAL;
6226e173d3bSMartin Habets }
6236e173d3bSMartin Habets
62471ad88f6SMartin Habets if (prog && efx->net_dev->mtu > efx_siena_xdp_max_mtu(efx)) {
6256e173d3bSMartin Habets netif_err(efx, drv, efx->net_dev,
6266e173d3bSMartin Habets "Unable to configure XDP with MTU of %d (max: %d)\n",
62771ad88f6SMartin Habets efx->net_dev->mtu, efx_siena_xdp_max_mtu(efx));
6286e173d3bSMartin Habets return -EINVAL;
6296e173d3bSMartin Habets }
6306e173d3bSMartin Habets
6316e173d3bSMartin Habets old_prog = rtnl_dereference(efx->xdp_prog);
6326e173d3bSMartin Habets rcu_assign_pointer(efx->xdp_prog, prog);
6336e173d3bSMartin Habets /* Release the reference that was originally passed by the caller. */
6346e173d3bSMartin Habets if (old_prog)
6356e173d3bSMartin Habets bpf_prog_put(old_prog);
6366e173d3bSMartin Habets
6376e173d3bSMartin Habets return 0;
6386e173d3bSMartin Habets }
6396e173d3bSMartin Habets
6406e173d3bSMartin Habets /* Context: process, rtnl_lock() held. */
efx_xdp(struct net_device * dev,struct netdev_bpf * xdp)6416e173d3bSMartin Habets static int efx_xdp(struct net_device *dev, struct netdev_bpf *xdp)
6426e173d3bSMartin Habets {
6436e173d3bSMartin Habets struct efx_nic *efx = netdev_priv(dev);
6446e173d3bSMartin Habets
6456e173d3bSMartin Habets switch (xdp->command) {
6466e173d3bSMartin Habets case XDP_SETUP_PROG:
6476e173d3bSMartin Habets return efx_xdp_setup_prog(efx, xdp->prog);
6486e173d3bSMartin Habets default:
6496e173d3bSMartin Habets return -EINVAL;
6506e173d3bSMartin Habets }
6516e173d3bSMartin Habets }
6526e173d3bSMartin Habets
efx_xdp_xmit(struct net_device * dev,int n,struct xdp_frame ** xdpfs,u32 flags)6536e173d3bSMartin Habets static int efx_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **xdpfs,
6546e173d3bSMartin Habets u32 flags)
6556e173d3bSMartin Habets {
6566e173d3bSMartin Habets struct efx_nic *efx = netdev_priv(dev);
6576e173d3bSMartin Habets
6586e173d3bSMartin Habets if (!netif_running(dev))
6596e173d3bSMartin Habets return -EINVAL;
6606e173d3bSMartin Habets
66171ad88f6SMartin Habets return efx_siena_xdp_tx_buffers(efx, n, xdpfs, flags & XDP_XMIT_FLUSH);
6626e173d3bSMartin Habets }
6636e173d3bSMartin Habets
efx_update_name(struct efx_nic * efx)6646e173d3bSMartin Habets static void efx_update_name(struct efx_nic *efx)
6656e173d3bSMartin Habets {
6666e173d3bSMartin Habets strcpy(efx->name, efx->net_dev->name);
66771ad88f6SMartin Habets efx_siena_mtd_rename(efx);
66871ad88f6SMartin Habets efx_siena_set_channel_names(efx);
6696e173d3bSMartin Habets }
6706e173d3bSMartin Habets
efx_netdev_event(struct notifier_block * this,unsigned long event,void * ptr)6716e173d3bSMartin Habets static int efx_netdev_event(struct notifier_block *this,
6726e173d3bSMartin Habets unsigned long event, void *ptr)
6736e173d3bSMartin Habets {
6746e173d3bSMartin Habets struct net_device *net_dev = netdev_notifier_info_to_dev(ptr);
6756e173d3bSMartin Habets
6766e173d3bSMartin Habets if ((net_dev->netdev_ops == &efx_netdev_ops) &&
6776e173d3bSMartin Habets event == NETDEV_CHANGENAME)
6786e173d3bSMartin Habets efx_update_name(netdev_priv(net_dev));
6796e173d3bSMartin Habets
6806e173d3bSMartin Habets return NOTIFY_DONE;
6816e173d3bSMartin Habets }
6826e173d3bSMartin Habets
6836e173d3bSMartin Habets static struct notifier_block efx_netdev_notifier = {
6846e173d3bSMartin Habets .notifier_call = efx_netdev_event,
6856e173d3bSMartin Habets };
6866e173d3bSMartin Habets
phy_type_show(struct device * dev,struct device_attribute * attr,char * buf)6876e173d3bSMartin Habets static ssize_t phy_type_show(struct device *dev,
6886e173d3bSMartin Habets struct device_attribute *attr, char *buf)
6896e173d3bSMartin Habets {
6906e173d3bSMartin Habets struct efx_nic *efx = dev_get_drvdata(dev);
6916e173d3bSMartin Habets return sprintf(buf, "%d\n", efx->phy_type);
6926e173d3bSMartin Habets }
6936e173d3bSMartin Habets static DEVICE_ATTR_RO(phy_type);
6946e173d3bSMartin Habets
efx_register_netdev(struct efx_nic * efx)6956e173d3bSMartin Habets static int efx_register_netdev(struct efx_nic *efx)
6966e173d3bSMartin Habets {
6976e173d3bSMartin Habets struct net_device *net_dev = efx->net_dev;
6986e173d3bSMartin Habets struct efx_channel *channel;
6996e173d3bSMartin Habets int rc;
7006e173d3bSMartin Habets
7016e173d3bSMartin Habets net_dev->watchdog_timeo = 5 * HZ;
7026e173d3bSMartin Habets net_dev->irq = efx->pci_dev->irq;
7036e173d3bSMartin Habets net_dev->netdev_ops = &efx_netdev_ops;
7046e173d3bSMartin Habets if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0)
7056e173d3bSMartin Habets net_dev->priv_flags |= IFF_UNICAST_FLT;
70671ad88f6SMartin Habets net_dev->ethtool_ops = &efx_siena_ethtool_ops;
7076e173d3bSMartin Habets netif_set_tso_max_segs(net_dev, EFX_TSO_MAX_SEGS);
7086e173d3bSMartin Habets net_dev->min_mtu = EFX_MIN_MTU;
7096e173d3bSMartin Habets net_dev->max_mtu = EFX_MAX_MTU;
7106e173d3bSMartin Habets
7116e173d3bSMartin Habets rtnl_lock();
7126e173d3bSMartin Habets
7136e173d3bSMartin Habets /* Enable resets to be scheduled and check whether any were
7146e173d3bSMartin Habets * already requested. If so, the NIC is probably hosed so we
7156e173d3bSMartin Habets * abort.
7166e173d3bSMartin Habets */
7176e173d3bSMartin Habets efx->state = STATE_READY;
7186e173d3bSMartin Habets smp_mb(); /* ensure we change state before checking reset_pending */
7196e173d3bSMartin Habets if (efx->reset_pending) {
7206e173d3bSMartin Habets pci_err(efx->pci_dev, "aborting probe due to scheduled reset\n");
7216e173d3bSMartin Habets rc = -EIO;
7226e173d3bSMartin Habets goto fail_locked;
7236e173d3bSMartin Habets }
7246e173d3bSMartin Habets
7256e173d3bSMartin Habets rc = dev_alloc_name(net_dev, net_dev->name);
7266e173d3bSMartin Habets if (rc < 0)
7276e173d3bSMartin Habets goto fail_locked;
7286e173d3bSMartin Habets efx_update_name(efx);
7296e173d3bSMartin Habets
7306e173d3bSMartin Habets /* Always start with carrier off; PHY events will detect the link */
7316e173d3bSMartin Habets netif_carrier_off(net_dev);
7326e173d3bSMartin Habets
7336e173d3bSMartin Habets rc = register_netdevice(net_dev);
7346e173d3bSMartin Habets if (rc)
7356e173d3bSMartin Habets goto fail_locked;
7366e173d3bSMartin Habets
7376e173d3bSMartin Habets efx_for_each_channel(channel, efx) {
7386e173d3bSMartin Habets struct efx_tx_queue *tx_queue;
7396e173d3bSMartin Habets efx_for_each_channel_tx_queue(tx_queue, channel)
74071ad88f6SMartin Habets efx_siena_init_tx_queue_core_txq(tx_queue);
7416e173d3bSMartin Habets }
7426e173d3bSMartin Habets
7436e173d3bSMartin Habets efx_associate(efx);
7446e173d3bSMartin Habets
7456e173d3bSMartin Habets rtnl_unlock();
7466e173d3bSMartin Habets
7476e173d3bSMartin Habets rc = device_create_file(&efx->pci_dev->dev, &dev_attr_phy_type);
7486e173d3bSMartin Habets if (rc) {
7496e173d3bSMartin Habets netif_err(efx, drv, efx->net_dev,
7506e173d3bSMartin Habets "failed to init net dev attributes\n");
7516e173d3bSMartin Habets goto fail_registered;
7526e173d3bSMartin Habets }
7536e173d3bSMartin Habets
75471ad88f6SMartin Habets efx_siena_init_mcdi_logging(efx);
7556e173d3bSMartin Habets
7566e173d3bSMartin Habets return 0;
7576e173d3bSMartin Habets
7586e173d3bSMartin Habets fail_registered:
7596e173d3bSMartin Habets rtnl_lock();
7606e173d3bSMartin Habets efx_dissociate(efx);
7616e173d3bSMartin Habets unregister_netdevice(net_dev);
7626e173d3bSMartin Habets fail_locked:
7636e173d3bSMartin Habets efx->state = STATE_UNINIT;
7646e173d3bSMartin Habets rtnl_unlock();
7656e173d3bSMartin Habets netif_err(efx, drv, efx->net_dev, "could not register net dev\n");
7666e173d3bSMartin Habets return rc;
7676e173d3bSMartin Habets }
7686e173d3bSMartin Habets
efx_unregister_netdev(struct efx_nic * efx)7696e173d3bSMartin Habets static void efx_unregister_netdev(struct efx_nic *efx)
7706e173d3bSMartin Habets {
7716e173d3bSMartin Habets if (!efx->net_dev)
7726e173d3bSMartin Habets return;
7736e173d3bSMartin Habets
7746e173d3bSMartin Habets BUG_ON(netdev_priv(efx->net_dev) != efx);
7756e173d3bSMartin Habets
7766e173d3bSMartin Habets if (efx_dev_registered(efx)) {
777f029c781SWolfram Sang strscpy(efx->name, pci_name(efx->pci_dev), sizeof(efx->name));
77871ad88f6SMartin Habets efx_siena_fini_mcdi_logging(efx);
7796e173d3bSMartin Habets device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_type);
7806e173d3bSMartin Habets unregister_netdev(efx->net_dev);
7816e173d3bSMartin Habets }
7826e173d3bSMartin Habets }
7836e173d3bSMartin Habets
7846e173d3bSMartin Habets /**************************************************************************
7856e173d3bSMartin Habets *
7866e173d3bSMartin Habets * List of NICs we support
7876e173d3bSMartin Habets *
7886e173d3bSMartin Habets **************************************************************************/
7896e173d3bSMartin Habets
7906e173d3bSMartin Habets /* PCI device ID table */
7916e173d3bSMartin Habets static const struct pci_device_id efx_pci_table[] = {
792956f2d86SMartin Habets {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0803), /* SFC9020 */
793956f2d86SMartin Habets .driver_data = (unsigned long)&siena_a0_nic_type},
794956f2d86SMartin Habets {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0813), /* SFL9021 */
795956f2d86SMartin Habets .driver_data = (unsigned long)&siena_a0_nic_type},
7966e173d3bSMartin Habets {0} /* end of list */
7976e173d3bSMartin Habets };
7986e173d3bSMartin Habets
7996e173d3bSMartin Habets /**************************************************************************
8006e173d3bSMartin Habets *
8016e173d3bSMartin Habets * Data housekeeping
8026e173d3bSMartin Habets *
8036e173d3bSMartin Habets **************************************************************************/
8046e173d3bSMartin Habets
efx_siena_update_sw_stats(struct efx_nic * efx,u64 * stats)80571ad88f6SMartin Habets void efx_siena_update_sw_stats(struct efx_nic *efx, u64 *stats)
8066e173d3bSMartin Habets {
8076e173d3bSMartin Habets u64 n_rx_nodesc_trunc = 0;
8086e173d3bSMartin Habets struct efx_channel *channel;
8096e173d3bSMartin Habets
8106e173d3bSMartin Habets efx_for_each_channel(channel, efx)
8116e173d3bSMartin Habets n_rx_nodesc_trunc += channel->n_rx_nodesc_trunc;
8126e173d3bSMartin Habets stats[GENERIC_STAT_rx_nodesc_trunc] = n_rx_nodesc_trunc;
8136e173d3bSMartin Habets stats[GENERIC_STAT_rx_noskb_drops] = atomic_read(&efx->n_rx_noskb_drops);
8146e173d3bSMartin Habets }
8156e173d3bSMartin Habets
8166e173d3bSMartin Habets /**************************************************************************
8176e173d3bSMartin Habets *
8186e173d3bSMartin Habets * PCI interface
8196e173d3bSMartin Habets *
8206e173d3bSMartin Habets **************************************************************************/
8216e173d3bSMartin Habets
8226e173d3bSMartin Habets /* Main body of final NIC shutdown code
8236e173d3bSMartin Habets * This is called only at module unload (or hotplug removal).
8246e173d3bSMartin Habets */
efx_pci_remove_main(struct efx_nic * efx)8256e173d3bSMartin Habets static void efx_pci_remove_main(struct efx_nic *efx)
8266e173d3bSMartin Habets {
8276e173d3bSMartin Habets /* Flush reset_work. It can no longer be scheduled since we
8286e173d3bSMartin Habets * are not READY.
8296e173d3bSMartin Habets */
8306e173d3bSMartin Habets BUG_ON(efx->state == STATE_READY);
83171ad88f6SMartin Habets efx_siena_flush_reset_workqueue(efx);
8326e173d3bSMartin Habets
83371ad88f6SMartin Habets efx_siena_disable_interrupts(efx);
83471ad88f6SMartin Habets efx_siena_clear_interrupt_affinity(efx);
835c8443b69SMartin Habets efx_siena_fini_interrupt(efx);
8366e173d3bSMartin Habets efx_fini_port(efx);
8376e173d3bSMartin Habets efx->type->fini(efx);
83871ad88f6SMartin Habets efx_siena_fini_napi(efx);
8396e173d3bSMartin Habets efx_remove_all(efx);
8406e173d3bSMartin Habets }
8416e173d3bSMartin Habets
8426e173d3bSMartin Habets /* Final NIC shutdown
8436e173d3bSMartin Habets * This is called only at module unload (or hotplug removal). A PF can call
8446e173d3bSMartin Habets * this on its VFs to ensure they are unbound first.
8456e173d3bSMartin Habets */
efx_pci_remove(struct pci_dev * pci_dev)8466e173d3bSMartin Habets static void efx_pci_remove(struct pci_dev *pci_dev)
8476e173d3bSMartin Habets {
8486e173d3bSMartin Habets struct efx_nic *efx;
8496e173d3bSMartin Habets
8506e173d3bSMartin Habets efx = pci_get_drvdata(pci_dev);
8516e173d3bSMartin Habets if (!efx)
8526e173d3bSMartin Habets return;
8536e173d3bSMartin Habets
8546e173d3bSMartin Habets /* Mark the NIC as fini, then stop the interface */
8556e173d3bSMartin Habets rtnl_lock();
8566e173d3bSMartin Habets efx_dissociate(efx);
8576e173d3bSMartin Habets dev_close(efx->net_dev);
85871ad88f6SMartin Habets efx_siena_disable_interrupts(efx);
8596e173d3bSMartin Habets efx->state = STATE_UNINIT;
8606e173d3bSMartin Habets rtnl_unlock();
8616e173d3bSMartin Habets
8626e173d3bSMartin Habets if (efx->type->sriov_fini)
8636e173d3bSMartin Habets efx->type->sriov_fini(efx);
8646e173d3bSMartin Habets
8656e173d3bSMartin Habets efx_unregister_netdev(efx);
8666e173d3bSMartin Habets
86771ad88f6SMartin Habets efx_siena_mtd_remove(efx);
8686e173d3bSMartin Habets
8696e173d3bSMartin Habets efx_pci_remove_main(efx);
8706e173d3bSMartin Habets
87171ad88f6SMartin Habets efx_siena_fini_io(efx);
8726e173d3bSMartin Habets netif_dbg(efx, drv, efx->net_dev, "shutdown successful\n");
8736e173d3bSMartin Habets
87471ad88f6SMartin Habets efx_siena_fini_struct(efx);
8756e173d3bSMartin Habets free_netdev(efx->net_dev);
8766e173d3bSMartin Habets };
8776e173d3bSMartin Habets
8786e173d3bSMartin Habets /* NIC VPD information
8796e173d3bSMartin Habets * Called during probe to display the part number of the
8806e173d3bSMartin Habets * installed NIC.
8816e173d3bSMartin Habets */
efx_probe_vpd_strings(struct efx_nic * efx)8826e173d3bSMartin Habets static void efx_probe_vpd_strings(struct efx_nic *efx)
8836e173d3bSMartin Habets {
8846e173d3bSMartin Habets struct pci_dev *dev = efx->pci_dev;
8856e173d3bSMartin Habets unsigned int vpd_size, kw_len;
8866e173d3bSMartin Habets u8 *vpd_data;
8876e173d3bSMartin Habets int start;
8886e173d3bSMartin Habets
8896e173d3bSMartin Habets vpd_data = pci_vpd_alloc(dev, &vpd_size);
8906e173d3bSMartin Habets if (IS_ERR(vpd_data)) {
8916e173d3bSMartin Habets pci_warn(dev, "Unable to read VPD\n");
8926e173d3bSMartin Habets return;
8936e173d3bSMartin Habets }
8946e173d3bSMartin Habets
8956e173d3bSMartin Habets start = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size,
8966e173d3bSMartin Habets PCI_VPD_RO_KEYWORD_PARTNO, &kw_len);
8976e173d3bSMartin Habets if (start < 0)
8986e173d3bSMartin Habets pci_err(dev, "Part number not found or incomplete\n");
8996e173d3bSMartin Habets else
9006e173d3bSMartin Habets pci_info(dev, "Part Number : %.*s\n", kw_len, vpd_data + start);
9016e173d3bSMartin Habets
9026e173d3bSMartin Habets start = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size,
9036e173d3bSMartin Habets PCI_VPD_RO_KEYWORD_SERIALNO, &kw_len);
9046e173d3bSMartin Habets if (start < 0)
9056e173d3bSMartin Habets pci_err(dev, "Serial number not found or incomplete\n");
9066e173d3bSMartin Habets else
9076e173d3bSMartin Habets efx->vpd_sn = kmemdup_nul(vpd_data + start, kw_len, GFP_KERNEL);
9086e173d3bSMartin Habets
9096e173d3bSMartin Habets kfree(vpd_data);
9106e173d3bSMartin Habets }
9116e173d3bSMartin Habets
9126e173d3bSMartin Habets
9136e173d3bSMartin Habets /* Main body of NIC initialisation
9146e173d3bSMartin Habets * This is called at module load (or hotplug insertion, theoretically).
9156e173d3bSMartin Habets */
efx_pci_probe_main(struct efx_nic * efx)9166e173d3bSMartin Habets static int efx_pci_probe_main(struct efx_nic *efx)
9176e173d3bSMartin Habets {
9186e173d3bSMartin Habets int rc;
9196e173d3bSMartin Habets
9206e173d3bSMartin Habets /* Do start-of-day initialisation */
9216e173d3bSMartin Habets rc = efx_probe_all(efx);
9226e173d3bSMartin Habets if (rc)
9236e173d3bSMartin Habets goto fail1;
9246e173d3bSMartin Habets
92571ad88f6SMartin Habets efx_siena_init_napi(efx);
9266e173d3bSMartin Habets
9276e173d3bSMartin Habets down_write(&efx->filter_sem);
9286e173d3bSMartin Habets rc = efx->type->init(efx);
9296e173d3bSMartin Habets up_write(&efx->filter_sem);
9306e173d3bSMartin Habets if (rc) {
9316e173d3bSMartin Habets pci_err(efx->pci_dev, "failed to initialise NIC\n");
9326e173d3bSMartin Habets goto fail3;
9336e173d3bSMartin Habets }
9346e173d3bSMartin Habets
9356e173d3bSMartin Habets rc = efx_init_port(efx);
9366e173d3bSMartin Habets if (rc) {
9376e173d3bSMartin Habets netif_err(efx, probe, efx->net_dev,
9386e173d3bSMartin Habets "failed to initialise port\n");
9396e173d3bSMartin Habets goto fail4;
9406e173d3bSMartin Habets }
9416e173d3bSMartin Habets
942c8443b69SMartin Habets rc = efx_siena_init_interrupt(efx);
9436e173d3bSMartin Habets if (rc)
9446e173d3bSMartin Habets goto fail5;
9456e173d3bSMartin Habets
94671ad88f6SMartin Habets efx_siena_set_interrupt_affinity(efx);
94771ad88f6SMartin Habets rc = efx_siena_enable_interrupts(efx);
9486e173d3bSMartin Habets if (rc)
9496e173d3bSMartin Habets goto fail6;
9506e173d3bSMartin Habets
9516e173d3bSMartin Habets return 0;
9526e173d3bSMartin Habets
9536e173d3bSMartin Habets fail6:
95471ad88f6SMartin Habets efx_siena_clear_interrupt_affinity(efx);
955c8443b69SMartin Habets efx_siena_fini_interrupt(efx);
9566e173d3bSMartin Habets fail5:
9576e173d3bSMartin Habets efx_fini_port(efx);
9586e173d3bSMartin Habets fail4:
9596e173d3bSMartin Habets efx->type->fini(efx);
9606e173d3bSMartin Habets fail3:
96171ad88f6SMartin Habets efx_siena_fini_napi(efx);
9626e173d3bSMartin Habets efx_remove_all(efx);
9636e173d3bSMartin Habets fail1:
9646e173d3bSMartin Habets return rc;
9656e173d3bSMartin Habets }
9666e173d3bSMartin Habets
efx_pci_probe_post_io(struct efx_nic * efx)9676e173d3bSMartin Habets static int efx_pci_probe_post_io(struct efx_nic *efx)
9686e173d3bSMartin Habets {
9696e173d3bSMartin Habets struct net_device *net_dev = efx->net_dev;
9706e173d3bSMartin Habets int rc = efx_pci_probe_main(efx);
9716e173d3bSMartin Habets
9726e173d3bSMartin Habets if (rc)
9736e173d3bSMartin Habets return rc;
9746e173d3bSMartin Habets
9756e173d3bSMartin Habets if (efx->type->sriov_init) {
9766e173d3bSMartin Habets rc = efx->type->sriov_init(efx);
9776e173d3bSMartin Habets if (rc)
9786e173d3bSMartin Habets pci_err(efx->pci_dev, "SR-IOV can't be enabled rc %d\n",
9796e173d3bSMartin Habets rc);
9806e173d3bSMartin Habets }
9816e173d3bSMartin Habets
9826e173d3bSMartin Habets /* Determine netdevice features */
9836e173d3bSMartin Habets net_dev->features |= (efx->type->offload_features | NETIF_F_SG |
9846e173d3bSMartin Habets NETIF_F_TSO | NETIF_F_RXCSUM | NETIF_F_RXALL);
9856e173d3bSMartin Habets if (efx->type->offload_features & (NETIF_F_IPV6_CSUM | NETIF_F_HW_CSUM))
9866e173d3bSMartin Habets net_dev->features |= NETIF_F_TSO6;
9876e173d3bSMartin Habets /* Check whether device supports TSO */
9886e173d3bSMartin Habets if (!efx->type->tso_versions || !efx->type->tso_versions(efx))
9896e173d3bSMartin Habets net_dev->features &= ~NETIF_F_ALL_TSO;
9906e173d3bSMartin Habets /* Mask for features that also apply to VLAN devices */
9916e173d3bSMartin Habets net_dev->vlan_features |= (NETIF_F_HW_CSUM | NETIF_F_SG |
9926e173d3bSMartin Habets NETIF_F_HIGHDMA | NETIF_F_ALL_TSO |
9936e173d3bSMartin Habets NETIF_F_RXCSUM);
9946e173d3bSMartin Habets
9956e173d3bSMartin Habets net_dev->hw_features |= net_dev->features & ~efx->fixed_features;
9966e173d3bSMartin Habets
9976e173d3bSMartin Habets /* Disable receiving frames with bad FCS, by default. */
9986e173d3bSMartin Habets net_dev->features &= ~NETIF_F_RXALL;
9996e173d3bSMartin Habets
10006e173d3bSMartin Habets /* Disable VLAN filtering by default. It may be enforced if
10016e173d3bSMartin Habets * the feature is fixed (i.e. VLAN filters are required to
10026e173d3bSMartin Habets * receive VLAN tagged packets due to vPort restrictions).
10036e173d3bSMartin Habets */
10046e173d3bSMartin Habets net_dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
10056e173d3bSMartin Habets net_dev->features |= efx->fixed_features;
10066e173d3bSMartin Habets
1007*9b0651e4SLorenzo Bianconi net_dev->xdp_features = NETDEV_XDP_ACT_BASIC |
1008*9b0651e4SLorenzo Bianconi NETDEV_XDP_ACT_REDIRECT |
1009*9b0651e4SLorenzo Bianconi NETDEV_XDP_ACT_NDO_XMIT;
1010*9b0651e4SLorenzo Bianconi
10116e173d3bSMartin Habets rc = efx_register_netdev(efx);
10126e173d3bSMartin Habets if (!rc)
10136e173d3bSMartin Habets return 0;
10146e173d3bSMartin Habets
10156e173d3bSMartin Habets efx_pci_remove_main(efx);
10166e173d3bSMartin Habets return rc;
10176e173d3bSMartin Habets }
10186e173d3bSMartin Habets
10196e173d3bSMartin Habets /* NIC initialisation
10206e173d3bSMartin Habets *
10216e173d3bSMartin Habets * This is called at module load (or hotplug insertion,
10226e173d3bSMartin Habets * theoretically). It sets up PCI mappings, resets the NIC,
10236e173d3bSMartin Habets * sets up and registers the network devices with the kernel and hooks
10246e173d3bSMartin Habets * the interrupt service routine. It does not prepare the device for
10256e173d3bSMartin Habets * transmission; this is left to the first time one of the network
10266e173d3bSMartin Habets * interfaces is brought up (i.e. efx_net_open).
10276e173d3bSMartin Habets */
efx_pci_probe(struct pci_dev * pci_dev,const struct pci_device_id * entry)10286e173d3bSMartin Habets static int efx_pci_probe(struct pci_dev *pci_dev,
10296e173d3bSMartin Habets const struct pci_device_id *entry)
10306e173d3bSMartin Habets {
10316e173d3bSMartin Habets struct net_device *net_dev;
10326e173d3bSMartin Habets struct efx_nic *efx;
10336e173d3bSMartin Habets int rc;
10346e173d3bSMartin Habets
10356e173d3bSMartin Habets /* Allocate and initialise a struct net_device and struct efx_nic */
10366e173d3bSMartin Habets net_dev = alloc_etherdev_mqs(sizeof(*efx), EFX_MAX_CORE_TX_QUEUES,
10376e173d3bSMartin Habets EFX_MAX_RX_QUEUES);
10386e173d3bSMartin Habets if (!net_dev)
10396e173d3bSMartin Habets return -ENOMEM;
10406e173d3bSMartin Habets efx = netdev_priv(net_dev);
10416e173d3bSMartin Habets efx->type = (const struct efx_nic_type *) entry->driver_data;
10426e173d3bSMartin Habets efx->fixed_features |= NETIF_F_HIGHDMA;
10436e173d3bSMartin Habets
10446e173d3bSMartin Habets pci_set_drvdata(pci_dev, efx);
10456e173d3bSMartin Habets SET_NETDEV_DEV(net_dev, &pci_dev->dev);
104671ad88f6SMartin Habets rc = efx_siena_init_struct(efx, pci_dev, net_dev);
10476e173d3bSMartin Habets if (rc)
10486e173d3bSMartin Habets goto fail1;
10496e173d3bSMartin Habets
10506e173d3bSMartin Habets pci_info(pci_dev, "Solarflare NIC detected\n");
10516e173d3bSMartin Habets
10526e173d3bSMartin Habets if (!efx->type->is_vf)
10536e173d3bSMartin Habets efx_probe_vpd_strings(efx);
10546e173d3bSMartin Habets
10556e173d3bSMartin Habets /* Set up basic I/O (BAR mappings etc) */
105671ad88f6SMartin Habets rc = efx_siena_init_io(efx, efx->type->mem_bar(efx),
105771ad88f6SMartin Habets efx->type->max_dma_mask,
10586e173d3bSMartin Habets efx->type->mem_map_size(efx));
10596e173d3bSMartin Habets if (rc)
10606e173d3bSMartin Habets goto fail2;
10616e173d3bSMartin Habets
10626e173d3bSMartin Habets rc = efx_pci_probe_post_io(efx);
10636e173d3bSMartin Habets if (rc) {
10646e173d3bSMartin Habets /* On failure, retry once immediately.
10656e173d3bSMartin Habets * If we aborted probe due to a scheduled reset, dismiss it.
10666e173d3bSMartin Habets */
10676e173d3bSMartin Habets efx->reset_pending = 0;
10686e173d3bSMartin Habets rc = efx_pci_probe_post_io(efx);
10696e173d3bSMartin Habets if (rc) {
10706e173d3bSMartin Habets /* On another failure, retry once more
10716e173d3bSMartin Habets * after a 50-305ms delay.
10726e173d3bSMartin Habets */
10736e173d3bSMartin Habets unsigned char r;
10746e173d3bSMartin Habets
10756e173d3bSMartin Habets get_random_bytes(&r, 1);
10766e173d3bSMartin Habets msleep((unsigned int)r + 50);
10776e173d3bSMartin Habets efx->reset_pending = 0;
10786e173d3bSMartin Habets rc = efx_pci_probe_post_io(efx);
10796e173d3bSMartin Habets }
10806e173d3bSMartin Habets }
10816e173d3bSMartin Habets if (rc)
10826e173d3bSMartin Habets goto fail3;
10836e173d3bSMartin Habets
10846e173d3bSMartin Habets netif_dbg(efx, probe, efx->net_dev, "initialisation successful\n");
10856e173d3bSMartin Habets
10866e173d3bSMartin Habets /* Try to create MTDs, but allow this to fail */
10876e173d3bSMartin Habets rtnl_lock();
10886e173d3bSMartin Habets rc = efx_mtd_probe(efx);
10896e173d3bSMartin Habets rtnl_unlock();
10906e173d3bSMartin Habets if (rc && rc != -EPERM)
10916e173d3bSMartin Habets netif_warn(efx, probe, efx->net_dev,
10926e173d3bSMartin Habets "failed to create MTDs (%d)\n", rc);
10936e173d3bSMartin Habets
10946e173d3bSMartin Habets if (efx->type->udp_tnl_push_ports)
10956e173d3bSMartin Habets efx->type->udp_tnl_push_ports(efx);
10966e173d3bSMartin Habets
10976e173d3bSMartin Habets return 0;
10986e173d3bSMartin Habets
10996e173d3bSMartin Habets fail3:
110071ad88f6SMartin Habets efx_siena_fini_io(efx);
11016e173d3bSMartin Habets fail2:
110271ad88f6SMartin Habets efx_siena_fini_struct(efx);
11036e173d3bSMartin Habets fail1:
11046e173d3bSMartin Habets WARN_ON(rc > 0);
11056e173d3bSMartin Habets netif_dbg(efx, drv, efx->net_dev, "initialisation failed. rc=%d\n", rc);
11066e173d3bSMartin Habets free_netdev(net_dev);
11076e173d3bSMartin Habets return rc;
11086e173d3bSMartin Habets }
11096e173d3bSMartin Habets
11106e173d3bSMartin Habets /* efx_pci_sriov_configure returns the actual number of Virtual Functions
11116e173d3bSMartin Habets * enabled on success
11126e173d3bSMartin Habets */
1113dfb1cfbdSMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
efx_pci_sriov_configure(struct pci_dev * dev,int num_vfs)11146e173d3bSMartin Habets static int efx_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
11156e173d3bSMartin Habets {
11166e173d3bSMartin Habets int rc;
11176e173d3bSMartin Habets struct efx_nic *efx = pci_get_drvdata(dev);
11186e173d3bSMartin Habets
11196e173d3bSMartin Habets if (efx->type->sriov_configure) {
11206e173d3bSMartin Habets rc = efx->type->sriov_configure(efx, num_vfs);
11216e173d3bSMartin Habets if (rc)
11226e173d3bSMartin Habets return rc;
11236e173d3bSMartin Habets else
11246e173d3bSMartin Habets return num_vfs;
11256e173d3bSMartin Habets } else
11266e173d3bSMartin Habets return -EOPNOTSUPP;
11276e173d3bSMartin Habets }
11286e173d3bSMartin Habets #endif
11296e173d3bSMartin Habets
efx_pm_freeze(struct device * dev)11306e173d3bSMartin Habets static int efx_pm_freeze(struct device *dev)
11316e173d3bSMartin Habets {
11326e173d3bSMartin Habets struct efx_nic *efx = dev_get_drvdata(dev);
11336e173d3bSMartin Habets
11346e173d3bSMartin Habets rtnl_lock();
11356e173d3bSMartin Habets
11366e173d3bSMartin Habets if (efx->state != STATE_DISABLED) {
11376e173d3bSMartin Habets efx->state = STATE_UNINIT;
11386e173d3bSMartin Habets
11396e173d3bSMartin Habets efx_device_detach_sync(efx);
11406e173d3bSMartin Habets
114171ad88f6SMartin Habets efx_siena_stop_all(efx);
114271ad88f6SMartin Habets efx_siena_disable_interrupts(efx);
11436e173d3bSMartin Habets }
11446e173d3bSMartin Habets
11456e173d3bSMartin Habets rtnl_unlock();
11466e173d3bSMartin Habets
11476e173d3bSMartin Habets return 0;
11486e173d3bSMartin Habets }
11496e173d3bSMartin Habets
efx_pci_shutdown(struct pci_dev * pci_dev)115041e3b072SPieter Jansen van Vuuren static void efx_pci_shutdown(struct pci_dev *pci_dev)
115141e3b072SPieter Jansen van Vuuren {
115241e3b072SPieter Jansen van Vuuren struct efx_nic *efx = pci_get_drvdata(pci_dev);
115341e3b072SPieter Jansen van Vuuren
115441e3b072SPieter Jansen van Vuuren if (!efx)
115541e3b072SPieter Jansen van Vuuren return;
115641e3b072SPieter Jansen van Vuuren
115741e3b072SPieter Jansen van Vuuren efx_pm_freeze(&pci_dev->dev);
115841e3b072SPieter Jansen van Vuuren pci_disable_device(pci_dev);
115941e3b072SPieter Jansen van Vuuren }
116041e3b072SPieter Jansen van Vuuren
efx_pm_thaw(struct device * dev)11616e173d3bSMartin Habets static int efx_pm_thaw(struct device *dev)
11626e173d3bSMartin Habets {
11636e173d3bSMartin Habets int rc;
11646e173d3bSMartin Habets struct efx_nic *efx = dev_get_drvdata(dev);
11656e173d3bSMartin Habets
11666e173d3bSMartin Habets rtnl_lock();
11676e173d3bSMartin Habets
11686e173d3bSMartin Habets if (efx->state != STATE_DISABLED) {
116971ad88f6SMartin Habets rc = efx_siena_enable_interrupts(efx);
11706e173d3bSMartin Habets if (rc)
11716e173d3bSMartin Habets goto fail;
11726e173d3bSMartin Habets
11736e173d3bSMartin Habets mutex_lock(&efx->mac_lock);
11744d49e5cdSMartin Habets efx_siena_mcdi_port_reconfigure(efx);
11756e173d3bSMartin Habets mutex_unlock(&efx->mac_lock);
11766e173d3bSMartin Habets
117771ad88f6SMartin Habets efx_siena_start_all(efx);
11786e173d3bSMartin Habets
11796e173d3bSMartin Habets efx_device_attach_if_not_resetting(efx);
11806e173d3bSMartin Habets
11816e173d3bSMartin Habets efx->state = STATE_READY;
11826e173d3bSMartin Habets
11836e173d3bSMartin Habets efx->type->resume_wol(efx);
11846e173d3bSMartin Habets }
11856e173d3bSMartin Habets
11866e173d3bSMartin Habets rtnl_unlock();
11876e173d3bSMartin Habets
11886e173d3bSMartin Habets /* Reschedule any quenched resets scheduled during efx_pm_freeze() */
118971ad88f6SMartin Habets efx_siena_queue_reset_work(efx);
11906e173d3bSMartin Habets
11916e173d3bSMartin Habets return 0;
11926e173d3bSMartin Habets
11936e173d3bSMartin Habets fail:
11946e173d3bSMartin Habets rtnl_unlock();
11956e173d3bSMartin Habets
11966e173d3bSMartin Habets return rc;
11976e173d3bSMartin Habets }
11986e173d3bSMartin Habets
efx_pm_poweroff(struct device * dev)11996e173d3bSMartin Habets static int efx_pm_poweroff(struct device *dev)
12006e173d3bSMartin Habets {
12016e173d3bSMartin Habets struct pci_dev *pci_dev = to_pci_dev(dev);
12026e173d3bSMartin Habets struct efx_nic *efx = pci_get_drvdata(pci_dev);
12036e173d3bSMartin Habets
12046e173d3bSMartin Habets efx->type->fini(efx);
12056e173d3bSMartin Habets
12066e173d3bSMartin Habets efx->reset_pending = 0;
12076e173d3bSMartin Habets
12086e173d3bSMartin Habets pci_save_state(pci_dev);
12096e173d3bSMartin Habets return pci_set_power_state(pci_dev, PCI_D3hot);
12106e173d3bSMartin Habets }
12116e173d3bSMartin Habets
12126e173d3bSMartin Habets /* Used for both resume and restore */
efx_pm_resume(struct device * dev)12136e173d3bSMartin Habets static int efx_pm_resume(struct device *dev)
12146e173d3bSMartin Habets {
12156e173d3bSMartin Habets struct pci_dev *pci_dev = to_pci_dev(dev);
12166e173d3bSMartin Habets struct efx_nic *efx = pci_get_drvdata(pci_dev);
12176e173d3bSMartin Habets int rc;
12186e173d3bSMartin Habets
12196e173d3bSMartin Habets rc = pci_set_power_state(pci_dev, PCI_D0);
12206e173d3bSMartin Habets if (rc)
12216e173d3bSMartin Habets return rc;
12226e173d3bSMartin Habets pci_restore_state(pci_dev);
12236e173d3bSMartin Habets rc = pci_enable_device(pci_dev);
12246e173d3bSMartin Habets if (rc)
12256e173d3bSMartin Habets return rc;
12266e173d3bSMartin Habets pci_set_master(efx->pci_dev);
12276e173d3bSMartin Habets rc = efx->type->reset(efx, RESET_TYPE_ALL);
12286e173d3bSMartin Habets if (rc)
12296e173d3bSMartin Habets return rc;
12306e173d3bSMartin Habets down_write(&efx->filter_sem);
12316e173d3bSMartin Habets rc = efx->type->init(efx);
12326e173d3bSMartin Habets up_write(&efx->filter_sem);
12336e173d3bSMartin Habets if (rc)
12346e173d3bSMartin Habets return rc;
12356e173d3bSMartin Habets rc = efx_pm_thaw(dev);
12366e173d3bSMartin Habets return rc;
12376e173d3bSMartin Habets }
12386e173d3bSMartin Habets
efx_pm_suspend(struct device * dev)12396e173d3bSMartin Habets static int efx_pm_suspend(struct device *dev)
12406e173d3bSMartin Habets {
12416e173d3bSMartin Habets int rc;
12426e173d3bSMartin Habets
12436e173d3bSMartin Habets efx_pm_freeze(dev);
12446e173d3bSMartin Habets rc = efx_pm_poweroff(dev);
12456e173d3bSMartin Habets if (rc)
12466e173d3bSMartin Habets efx_pm_resume(dev);
12476e173d3bSMartin Habets return rc;
12486e173d3bSMartin Habets }
12496e173d3bSMartin Habets
12506e173d3bSMartin Habets static const struct dev_pm_ops efx_pm_ops = {
12516e173d3bSMartin Habets .suspend = efx_pm_suspend,
12526e173d3bSMartin Habets .resume = efx_pm_resume,
12536e173d3bSMartin Habets .freeze = efx_pm_freeze,
12546e173d3bSMartin Habets .thaw = efx_pm_thaw,
12556e173d3bSMartin Habets .poweroff = efx_pm_poweroff,
12566e173d3bSMartin Habets .restore = efx_pm_resume,
12576e173d3bSMartin Habets };
12586e173d3bSMartin Habets
12596e173d3bSMartin Habets static struct pci_driver efx_pci_driver = {
12606e173d3bSMartin Habets .name = KBUILD_MODNAME,
12616e173d3bSMartin Habets .id_table = efx_pci_table,
12626e173d3bSMartin Habets .probe = efx_pci_probe,
12636e173d3bSMartin Habets .remove = efx_pci_remove,
12646e173d3bSMartin Habets .driver.pm = &efx_pm_ops,
126541e3b072SPieter Jansen van Vuuren .shutdown = efx_pci_shutdown,
126671ad88f6SMartin Habets .err_handler = &efx_siena_err_handlers,
1267dfb1cfbdSMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
12686e173d3bSMartin Habets .sriov_configure = efx_pci_sriov_configure,
12696e173d3bSMartin Habets #endif
12706e173d3bSMartin Habets };
12716e173d3bSMartin Habets
12726e173d3bSMartin Habets /**************************************************************************
12736e173d3bSMartin Habets *
12746e173d3bSMartin Habets * Kernel module interface
12756e173d3bSMartin Habets *
12766e173d3bSMartin Habets *************************************************************************/
12776e173d3bSMartin Habets
efx_init_module(void)12786e173d3bSMartin Habets static int __init efx_init_module(void)
12796e173d3bSMartin Habets {
12806e173d3bSMartin Habets int rc;
12816e173d3bSMartin Habets
1282c5a13c31SMartin Habets pr_info("Solarflare Siena driver\n");
12836e173d3bSMartin Habets
12846e173d3bSMartin Habets rc = register_netdevice_notifier(&efx_netdev_notifier);
12856e173d3bSMartin Habets if (rc)
12866e173d3bSMartin Habets goto err_notifier;
12876e173d3bSMartin Habets
1288c3743039SMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
1289c3743039SMartin Habets rc = efx_init_sriov();
1290c3743039SMartin Habets if (rc)
1291c3743039SMartin Habets goto err_sriov;
1292c3743039SMartin Habets #endif
1293c3743039SMartin Habets
129471ad88f6SMartin Habets rc = efx_siena_create_reset_workqueue();
12956e173d3bSMartin Habets if (rc)
12966e173d3bSMartin Habets goto err_reset;
12976e173d3bSMartin Habets
12986e173d3bSMartin Habets rc = pci_register_driver(&efx_pci_driver);
12996e173d3bSMartin Habets if (rc < 0)
13006e173d3bSMartin Habets goto err_pci;
13016e173d3bSMartin Habets
13026e173d3bSMartin Habets return 0;
13036e173d3bSMartin Habets
13046e173d3bSMartin Habets err_pci:
130571ad88f6SMartin Habets efx_siena_destroy_reset_workqueue();
13066e173d3bSMartin Habets err_reset:
1307c3743039SMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
1308c3743039SMartin Habets efx_fini_sriov();
1309c3743039SMartin Habets err_sriov:
1310c3743039SMartin Habets #endif
13116e173d3bSMartin Habets unregister_netdevice_notifier(&efx_netdev_notifier);
13126e173d3bSMartin Habets err_notifier:
13136e173d3bSMartin Habets return rc;
13146e173d3bSMartin Habets }
13156e173d3bSMartin Habets
efx_exit_module(void)13166e173d3bSMartin Habets static void __exit efx_exit_module(void)
13176e173d3bSMartin Habets {
1318c5a13c31SMartin Habets pr_info("Solarflare Siena driver unloading\n");
13196e173d3bSMartin Habets
13206e173d3bSMartin Habets pci_unregister_driver(&efx_pci_driver);
132171ad88f6SMartin Habets efx_siena_destroy_reset_workqueue();
1322c3743039SMartin Habets #ifdef CONFIG_SFC_SIENA_SRIOV
1323c3743039SMartin Habets efx_fini_sriov();
1324c3743039SMartin Habets #endif
13256e173d3bSMartin Habets unregister_netdevice_notifier(&efx_netdev_notifier);
13266e173d3bSMartin Habets
13276e173d3bSMartin Habets }
13286e173d3bSMartin Habets
13296e173d3bSMartin Habets module_init(efx_init_module);
13306e173d3bSMartin Habets module_exit(efx_exit_module);
13316e173d3bSMartin Habets
13326e173d3bSMartin Habets MODULE_AUTHOR("Solarflare Communications and "
13336e173d3bSMartin Habets "Michael Brown <mbrown@fensystems.co.uk>");
1334c5a13c31SMartin Habets MODULE_DESCRIPTION("Solarflare Siena network driver");
13356e173d3bSMartin Habets MODULE_LICENSE("GPL");
13366e173d3bSMartin Habets MODULE_DEVICE_TABLE(pci, efx_pci_table);
1337