1874aeea5SJeff Kirsher /**************************************************************************** 2f7a6d2c4SBen Hutchings * Driver for Solarflare network controllers and boards 3874aeea5SJeff Kirsher * Copyright 2005-2006 Fen Systems Ltd. 4f7a6d2c4SBen Hutchings * Copyright 2005-2013 Solarflare Communications Inc. 5874aeea5SJeff Kirsher * 6874aeea5SJeff Kirsher * This program is free software; you can redistribute it and/or modify it 7874aeea5SJeff Kirsher * under the terms of the GNU General Public License version 2 as published 8874aeea5SJeff Kirsher * by the Free Software Foundation, incorporated herein by reference. 9874aeea5SJeff Kirsher */ 10874aeea5SJeff Kirsher 11874aeea5SJeff Kirsher #include <linux/module.h> 12874aeea5SJeff Kirsher #include <linux/pci.h> 13874aeea5SJeff Kirsher #include <linux/netdevice.h> 14874aeea5SJeff Kirsher #include <linux/etherdevice.h> 15874aeea5SJeff Kirsher #include <linux/delay.h> 16874aeea5SJeff Kirsher #include <linux/notifier.h> 17874aeea5SJeff Kirsher #include <linux/ip.h> 18874aeea5SJeff Kirsher #include <linux/tcp.h> 19874aeea5SJeff Kirsher #include <linux/in.h> 20874aeea5SJeff Kirsher #include <linux/ethtool.h> 21874aeea5SJeff Kirsher #include <linux/topology.h> 22874aeea5SJeff Kirsher #include <linux/gfp.h> 23626950dbSAlexandre Rames #include <linux/aer.h> 24b28405b0SAlexandre Rames #include <linux/interrupt.h> 25874aeea5SJeff Kirsher #include "net_driver.h" 26e5fbd977SJon Cooper #include <net/gre.h> 27e5fbd977SJon Cooper #include <net/udp_tunnel.h> 28874aeea5SJeff Kirsher #include "efx.h" 29874aeea5SJeff Kirsher #include "nic.h" 30dd40781eSBen Hutchings #include "selftest.h" 317fa8d547SShradha Shah #include "sriov.h" 32874aeea5SJeff Kirsher 33874aeea5SJeff Kirsher #include "mcdi.h" 34e5fbd977SJon Cooper #include "mcdi_pcol.h" 35874aeea5SJeff Kirsher #include "workarounds.h" 36874aeea5SJeff Kirsher 37874aeea5SJeff Kirsher /************************************************************************** 38874aeea5SJeff Kirsher * 39874aeea5SJeff Kirsher * Type name strings 40874aeea5SJeff Kirsher * 41874aeea5SJeff Kirsher ************************************************************************** 42874aeea5SJeff Kirsher */ 43874aeea5SJeff Kirsher 44874aeea5SJeff Kirsher /* Loopback mode names (see LOOPBACK_MODE()) */ 45874aeea5SJeff Kirsher const unsigned int efx_loopback_mode_max = LOOPBACK_MAX; 4618e83e4cSBen Hutchings const char *const efx_loopback_mode_names[] = { 47874aeea5SJeff Kirsher [LOOPBACK_NONE] = "NONE", 48874aeea5SJeff Kirsher [LOOPBACK_DATA] = "DATAPATH", 49874aeea5SJeff Kirsher [LOOPBACK_GMAC] = "GMAC", 50874aeea5SJeff Kirsher [LOOPBACK_XGMII] = "XGMII", 51874aeea5SJeff Kirsher [LOOPBACK_XGXS] = "XGXS", 52874aeea5SJeff Kirsher [LOOPBACK_XAUI] = "XAUI", 53874aeea5SJeff Kirsher [LOOPBACK_GMII] = "GMII", 54874aeea5SJeff Kirsher [LOOPBACK_SGMII] = "SGMII", 55874aeea5SJeff Kirsher [LOOPBACK_XGBR] = "XGBR", 56874aeea5SJeff Kirsher [LOOPBACK_XFI] = "XFI", 57874aeea5SJeff Kirsher [LOOPBACK_XAUI_FAR] = "XAUI_FAR", 58874aeea5SJeff Kirsher [LOOPBACK_GMII_FAR] = "GMII_FAR", 59874aeea5SJeff Kirsher [LOOPBACK_SGMII_FAR] = "SGMII_FAR", 60874aeea5SJeff Kirsher [LOOPBACK_XFI_FAR] = "XFI_FAR", 61874aeea5SJeff Kirsher [LOOPBACK_GPHY] = "GPHY", 62874aeea5SJeff Kirsher [LOOPBACK_PHYXS] = "PHYXS", 63874aeea5SJeff Kirsher [LOOPBACK_PCS] = "PCS", 64874aeea5SJeff Kirsher [LOOPBACK_PMAPMD] = "PMA/PMD", 65874aeea5SJeff Kirsher [LOOPBACK_XPORT] = "XPORT", 66874aeea5SJeff Kirsher [LOOPBACK_XGMII_WS] = "XGMII_WS", 67874aeea5SJeff Kirsher [LOOPBACK_XAUI_WS] = "XAUI_WS", 68874aeea5SJeff Kirsher [LOOPBACK_XAUI_WS_FAR] = "XAUI_WS_FAR", 69874aeea5SJeff Kirsher [LOOPBACK_XAUI_WS_NEAR] = "XAUI_WS_NEAR", 70874aeea5SJeff Kirsher [LOOPBACK_GMII_WS] = "GMII_WS", 71874aeea5SJeff Kirsher [LOOPBACK_XFI_WS] = "XFI_WS", 72874aeea5SJeff Kirsher [LOOPBACK_XFI_WS_FAR] = "XFI_WS_FAR", 73874aeea5SJeff Kirsher [LOOPBACK_PHYXS_WS] = "PHYXS_WS", 74874aeea5SJeff Kirsher }; 75874aeea5SJeff Kirsher 76874aeea5SJeff Kirsher const unsigned int efx_reset_type_max = RESET_TYPE_MAX; 7718e83e4cSBen Hutchings const char *const efx_reset_type_names[] = { 78874aeea5SJeff Kirsher [RESET_TYPE_INVISIBLE] = "INVISIBLE", 79874aeea5SJeff Kirsher [RESET_TYPE_ALL] = "ALL", 80626950dbSAlexandre Rames [RESET_TYPE_RECOVER_OR_ALL] = "RECOVER_OR_ALL", 81874aeea5SJeff Kirsher [RESET_TYPE_WORLD] = "WORLD", 82626950dbSAlexandre Rames [RESET_TYPE_RECOVER_OR_DISABLE] = "RECOVER_OR_DISABLE", 83087e9025SJon Cooper [RESET_TYPE_DATAPATH] = "DATAPATH", 84e283546cSEdward Cree [RESET_TYPE_MC_BIST] = "MC_BIST", 85874aeea5SJeff Kirsher [RESET_TYPE_DISABLE] = "DISABLE", 86874aeea5SJeff Kirsher [RESET_TYPE_TX_WATCHDOG] = "TX_WATCHDOG", 87874aeea5SJeff Kirsher [RESET_TYPE_INT_ERROR] = "INT_ERROR", 883de82b91SAlexandre Rames [RESET_TYPE_DMA_ERROR] = "DMA_ERROR", 89874aeea5SJeff Kirsher [RESET_TYPE_TX_SKIP] = "TX_SKIP", 90874aeea5SJeff Kirsher [RESET_TYPE_MC_FAILURE] = "MC_FAILURE", 91e283546cSEdward Cree [RESET_TYPE_MCDI_TIMEOUT] = "MCDI_TIMEOUT (FLR)", 92874aeea5SJeff Kirsher }; 93874aeea5SJeff Kirsher 94e5fbd977SJon Cooper /* UDP tunnel type names */ 95e5fbd977SJon Cooper static const char *const efx_udp_tunnel_type_names[] = { 96e5fbd977SJon Cooper [TUNNEL_ENCAP_UDP_PORT_ENTRY_VXLAN] = "vxlan", 97e5fbd977SJon Cooper [TUNNEL_ENCAP_UDP_PORT_ENTRY_GENEVE] = "geneve", 98e5fbd977SJon Cooper }; 99e5fbd977SJon Cooper 100e5fbd977SJon Cooper void efx_get_udp_tunnel_type_name(u16 type, char *buf, size_t buflen) 101e5fbd977SJon Cooper { 102e5fbd977SJon Cooper if (type < ARRAY_SIZE(efx_udp_tunnel_type_names) && 103e5fbd977SJon Cooper efx_udp_tunnel_type_names[type] != NULL) 104e5fbd977SJon Cooper snprintf(buf, buflen, "%s", efx_udp_tunnel_type_names[type]); 105e5fbd977SJon Cooper else 106e5fbd977SJon Cooper snprintf(buf, buflen, "type %d", type); 107e5fbd977SJon Cooper } 108e5fbd977SJon Cooper 109874aeea5SJeff Kirsher /* Reset workqueue. If any NIC has a hardware failure then a reset will be 110874aeea5SJeff Kirsher * queued onto this work queue. This is not a per-nic work queue, because 111874aeea5SJeff Kirsher * efx_reset_work() acquires the rtnl lock, so resets are naturally serialised. 112874aeea5SJeff Kirsher */ 113874aeea5SJeff Kirsher static struct workqueue_struct *reset_workqueue; 114874aeea5SJeff Kirsher 11574cd60a4SJon Cooper /* How often and how many times to poll for a reset while waiting for a 11674cd60a4SJon Cooper * BIST that another function started to complete. 11774cd60a4SJon Cooper */ 11874cd60a4SJon Cooper #define BIST_WAIT_DELAY_MS 100 11974cd60a4SJon Cooper #define BIST_WAIT_DELAY_COUNT 100 12074cd60a4SJon Cooper 121874aeea5SJeff Kirsher /************************************************************************** 122874aeea5SJeff Kirsher * 123874aeea5SJeff Kirsher * Configurable values 124874aeea5SJeff Kirsher * 125874aeea5SJeff Kirsher *************************************************************************/ 126874aeea5SJeff Kirsher 127874aeea5SJeff Kirsher /* 128874aeea5SJeff Kirsher * Use separate channels for TX and RX events 129874aeea5SJeff Kirsher * 130874aeea5SJeff Kirsher * Set this to 1 to use separate channels for TX and RX. It allows us 131874aeea5SJeff Kirsher * to control interrupt affinity separately for TX and RX. 132874aeea5SJeff Kirsher * 133874aeea5SJeff Kirsher * This is only used in MSI-X interrupt mode 134874aeea5SJeff Kirsher */ 135b0fbdae1SShradha Shah bool efx_separate_tx_channels; 136b0fbdae1SShradha Shah module_param(efx_separate_tx_channels, bool, 0444); 137b0fbdae1SShradha Shah MODULE_PARM_DESC(efx_separate_tx_channels, 138874aeea5SJeff Kirsher "Use separate channels for TX and RX"); 139874aeea5SJeff Kirsher 140874aeea5SJeff Kirsher /* This is the weight assigned to each of the (per-channel) virtual 141874aeea5SJeff Kirsher * NAPI devices. 142874aeea5SJeff Kirsher */ 143874aeea5SJeff Kirsher static int napi_weight = 64; 144874aeea5SJeff Kirsher 145874aeea5SJeff Kirsher /* This is the time (in jiffies) between invocations of the hardware 146626950dbSAlexandre Rames * monitor. 147626950dbSAlexandre Rames * On Falcon-based NICs, this will: 148874aeea5SJeff Kirsher * - Check the on-board hardware monitor; 149874aeea5SJeff Kirsher * - Poll the link state and reconfigure the hardware as necessary. 150626950dbSAlexandre Rames * On Siena-based NICs for power systems with EEH support, this will give EEH a 151626950dbSAlexandre Rames * chance to start. 152874aeea5SJeff Kirsher */ 153874aeea5SJeff Kirsher static unsigned int efx_monitor_interval = 1 * HZ; 154874aeea5SJeff Kirsher 155874aeea5SJeff Kirsher /* Initial interrupt moderation settings. They can be modified after 156874aeea5SJeff Kirsher * module load with ethtool. 157874aeea5SJeff Kirsher * 158874aeea5SJeff Kirsher * The default for RX should strike a balance between increasing the 159874aeea5SJeff Kirsher * round-trip latency and reducing overhead. 160874aeea5SJeff Kirsher */ 161874aeea5SJeff Kirsher static unsigned int rx_irq_mod_usec = 60; 162874aeea5SJeff Kirsher 163874aeea5SJeff Kirsher /* Initial interrupt moderation settings. They can be modified after 164874aeea5SJeff Kirsher * module load with ethtool. 165874aeea5SJeff Kirsher * 166874aeea5SJeff Kirsher * This default is chosen to ensure that a 10G link does not go idle 167874aeea5SJeff Kirsher * while a TX queue is stopped after it has become full. A queue is 168874aeea5SJeff Kirsher * restarted when it drops below half full. The time this takes (assuming 169874aeea5SJeff Kirsher * worst case 3 descriptors per packet and 1024 descriptors) is 170874aeea5SJeff Kirsher * 512 / 3 * 1.2 = 205 usec. 171874aeea5SJeff Kirsher */ 172874aeea5SJeff Kirsher static unsigned int tx_irq_mod_usec = 150; 173874aeea5SJeff Kirsher 174874aeea5SJeff Kirsher /* This is the first interrupt mode to try out of: 175874aeea5SJeff Kirsher * 0 => MSI-X 176874aeea5SJeff Kirsher * 1 => MSI 177874aeea5SJeff Kirsher * 2 => legacy 178874aeea5SJeff Kirsher */ 179874aeea5SJeff Kirsher static unsigned int interrupt_mode; 180874aeea5SJeff Kirsher 181874aeea5SJeff Kirsher /* This is the requested number of CPUs to use for Receive-Side Scaling (RSS), 182874aeea5SJeff Kirsher * i.e. the number of CPUs among which we may distribute simultaneous 183874aeea5SJeff Kirsher * interrupt handling. 184874aeea5SJeff Kirsher * 185874aeea5SJeff Kirsher * Cards without MSI-X will only target one CPU via legacy or MSI interrupt. 186cdb08f8fSBen Hutchings * The default (0) means to assign an interrupt to each core. 187874aeea5SJeff Kirsher */ 188874aeea5SJeff Kirsher static unsigned int rss_cpus; 189874aeea5SJeff Kirsher module_param(rss_cpus, uint, 0444); 190874aeea5SJeff Kirsher MODULE_PARM_DESC(rss_cpus, "Number of CPUs to use for Receive-Side Scaling"); 191874aeea5SJeff Kirsher 192b9cc977dSBen Hutchings static bool phy_flash_cfg; 193b9cc977dSBen Hutchings module_param(phy_flash_cfg, bool, 0644); 194874aeea5SJeff Kirsher MODULE_PARM_DESC(phy_flash_cfg, "Set PHYs into reflash mode initially"); 195874aeea5SJeff Kirsher 196e7bed9c8SBen Hutchings static unsigned irq_adapt_low_thresh = 8000; 197874aeea5SJeff Kirsher module_param(irq_adapt_low_thresh, uint, 0644); 198874aeea5SJeff Kirsher MODULE_PARM_DESC(irq_adapt_low_thresh, 199874aeea5SJeff Kirsher "Threshold score for reducing IRQ moderation"); 200874aeea5SJeff Kirsher 201e7bed9c8SBen Hutchings static unsigned irq_adapt_high_thresh = 16000; 202874aeea5SJeff Kirsher module_param(irq_adapt_high_thresh, uint, 0644); 203874aeea5SJeff Kirsher MODULE_PARM_DESC(irq_adapt_high_thresh, 204874aeea5SJeff Kirsher "Threshold score for increasing IRQ moderation"); 205874aeea5SJeff Kirsher 206874aeea5SJeff Kirsher static unsigned debug = (NETIF_MSG_DRV | NETIF_MSG_PROBE | 207874aeea5SJeff Kirsher NETIF_MSG_LINK | NETIF_MSG_IFDOWN | 208874aeea5SJeff Kirsher NETIF_MSG_IFUP | NETIF_MSG_RX_ERR | 209874aeea5SJeff Kirsher NETIF_MSG_TX_ERR | NETIF_MSG_HW); 210874aeea5SJeff Kirsher module_param(debug, uint, 0); 211874aeea5SJeff Kirsher MODULE_PARM_DESC(debug, "Bitmapped debugging message enable value"); 212874aeea5SJeff Kirsher 213874aeea5SJeff Kirsher /************************************************************************** 214874aeea5SJeff Kirsher * 215874aeea5SJeff Kirsher * Utility functions and prototypes 216874aeea5SJeff Kirsher * 217874aeea5SJeff Kirsher *************************************************************************/ 218874aeea5SJeff Kirsher 219261e4d96SJon Cooper static int efx_soft_enable_interrupts(struct efx_nic *efx); 220d8291187SBen Hutchings static void efx_soft_disable_interrupts(struct efx_nic *efx); 2217f967c01SBen Hutchings static void efx_remove_channel(struct efx_channel *channel); 222874aeea5SJeff Kirsher static void efx_remove_channels(struct efx_nic *efx); 2237f967c01SBen Hutchings static const struct efx_channel_type efx_default_channel_type; 224874aeea5SJeff Kirsher static void efx_remove_port(struct efx_nic *efx); 2257f967c01SBen Hutchings static void efx_init_napi_channel(struct efx_channel *channel); 226874aeea5SJeff Kirsher static void efx_fini_napi(struct efx_nic *efx); 227874aeea5SJeff Kirsher static void efx_fini_napi_channel(struct efx_channel *channel); 228874aeea5SJeff Kirsher static void efx_fini_struct(struct efx_nic *efx); 229874aeea5SJeff Kirsher static void efx_start_all(struct efx_nic *efx); 230874aeea5SJeff Kirsher static void efx_stop_all(struct efx_nic *efx); 231874aeea5SJeff Kirsher 232874aeea5SJeff Kirsher #define EFX_ASSERT_RESET_SERIALISED(efx) \ 233874aeea5SJeff Kirsher do { \ 234f16aeea0SBen Hutchings if ((efx->state == STATE_READY) || \ 235626950dbSAlexandre Rames (efx->state == STATE_RECOVERY) || \ 236874aeea5SJeff Kirsher (efx->state == STATE_DISABLED)) \ 237874aeea5SJeff Kirsher ASSERT_RTNL(); \ 238874aeea5SJeff Kirsher } while (0) 239874aeea5SJeff Kirsher 2408b7325b4SBen Hutchings static int efx_check_disabled(struct efx_nic *efx) 2418b7325b4SBen Hutchings { 242626950dbSAlexandre Rames if (efx->state == STATE_DISABLED || efx->state == STATE_RECOVERY) { 2438b7325b4SBen Hutchings netif_err(efx, drv, efx->net_dev, 2448b7325b4SBen Hutchings "device is disabled due to earlier errors\n"); 2458b7325b4SBen Hutchings return -EIO; 2468b7325b4SBen Hutchings } 2478b7325b4SBen Hutchings return 0; 2488b7325b4SBen Hutchings } 2498b7325b4SBen Hutchings 250874aeea5SJeff Kirsher /************************************************************************** 251874aeea5SJeff Kirsher * 252874aeea5SJeff Kirsher * Event queue processing 253874aeea5SJeff Kirsher * 254874aeea5SJeff Kirsher *************************************************************************/ 255874aeea5SJeff Kirsher 256874aeea5SJeff Kirsher /* Process channel's event queue 257874aeea5SJeff Kirsher * 258874aeea5SJeff Kirsher * This function is responsible for processing the event queue of a 259874aeea5SJeff Kirsher * single channel. The caller must guarantee that this function will 260874aeea5SJeff Kirsher * never be concurrently called more than once on the same channel, 261874aeea5SJeff Kirsher * though different channels may be being processed concurrently. 262874aeea5SJeff Kirsher */ 263874aeea5SJeff Kirsher static int efx_process_channel(struct efx_channel *channel, int budget) 264874aeea5SJeff Kirsher { 265c936835cSPeter Dunning struct efx_tx_queue *tx_queue; 266874aeea5SJeff Kirsher int spent; 267874aeea5SJeff Kirsher 2689f2cb71cSBen Hutchings if (unlikely(!channel->enabled)) 269874aeea5SJeff Kirsher return 0; 270874aeea5SJeff Kirsher 271c936835cSPeter Dunning efx_for_each_channel_tx_queue(tx_queue, channel) { 272c936835cSPeter Dunning tx_queue->pkts_compl = 0; 273c936835cSPeter Dunning tx_queue->bytes_compl = 0; 274c936835cSPeter Dunning } 275c936835cSPeter Dunning 276874aeea5SJeff Kirsher spent = efx_nic_process_eventq(channel, budget); 277d9ab7007SBen Hutchings if (spent && efx_channel_has_rx_queue(channel)) { 278d9ab7007SBen Hutchings struct efx_rx_queue *rx_queue = 279d9ab7007SBen Hutchings efx_channel_get_rx_queue(channel); 280874aeea5SJeff Kirsher 281ff734ef4SBen Hutchings efx_rx_flush_packet(channel); 282cce28794SJon Cooper efx_fast_push_rx_descriptors(rx_queue, true); 283d9ab7007SBen Hutchings } 284874aeea5SJeff Kirsher 285c936835cSPeter Dunning /* Update BQL */ 286c936835cSPeter Dunning efx_for_each_channel_tx_queue(tx_queue, channel) { 287c936835cSPeter Dunning if (tx_queue->bytes_compl) { 288c936835cSPeter Dunning netdev_tx_completed_queue(tx_queue->core_txq, 289c936835cSPeter Dunning tx_queue->pkts_compl, tx_queue->bytes_compl); 290c936835cSPeter Dunning } 291c936835cSPeter Dunning } 292c936835cSPeter Dunning 293874aeea5SJeff Kirsher return spent; 294874aeea5SJeff Kirsher } 295874aeea5SJeff Kirsher 296874aeea5SJeff Kirsher /* NAPI poll handler 297874aeea5SJeff Kirsher * 298874aeea5SJeff Kirsher * NAPI guarantees serialisation of polls of the same device, which 299874aeea5SJeff Kirsher * provides the guarantee required by efx_process_channel(). 300874aeea5SJeff Kirsher */ 301539de7c5SBert Kenward static void efx_update_irq_mod(struct efx_nic *efx, struct efx_channel *channel) 302539de7c5SBert Kenward { 303539de7c5SBert Kenward int step = efx->irq_mod_step_us; 304539de7c5SBert Kenward 305539de7c5SBert Kenward if (channel->irq_mod_score < irq_adapt_low_thresh) { 306539de7c5SBert Kenward if (channel->irq_moderation_us > step) { 307539de7c5SBert Kenward channel->irq_moderation_us -= step; 308539de7c5SBert Kenward efx->type->push_irq_moderation(channel); 309539de7c5SBert Kenward } 310539de7c5SBert Kenward } else if (channel->irq_mod_score > irq_adapt_high_thresh) { 311539de7c5SBert Kenward if (channel->irq_moderation_us < 312539de7c5SBert Kenward efx->irq_rx_moderation_us) { 313539de7c5SBert Kenward channel->irq_moderation_us += step; 314539de7c5SBert Kenward efx->type->push_irq_moderation(channel); 315539de7c5SBert Kenward } 316539de7c5SBert Kenward } 317539de7c5SBert Kenward 318539de7c5SBert Kenward channel->irq_count = 0; 319539de7c5SBert Kenward channel->irq_mod_score = 0; 320539de7c5SBert Kenward } 321539de7c5SBert Kenward 322874aeea5SJeff Kirsher static int efx_poll(struct napi_struct *napi, int budget) 323874aeea5SJeff Kirsher { 324874aeea5SJeff Kirsher struct efx_channel *channel = 325874aeea5SJeff Kirsher container_of(napi, struct efx_channel, napi_str); 326874aeea5SJeff Kirsher struct efx_nic *efx = channel->efx; 327874aeea5SJeff Kirsher int spent; 328874aeea5SJeff Kirsher 329874aeea5SJeff Kirsher netif_vdbg(efx, intr, efx->net_dev, 330874aeea5SJeff Kirsher "channel %d NAPI poll executing on CPU %d\n", 331874aeea5SJeff Kirsher channel->channel, raw_smp_processor_id()); 332874aeea5SJeff Kirsher 333874aeea5SJeff Kirsher spent = efx_process_channel(channel, budget); 334874aeea5SJeff Kirsher 335874aeea5SJeff Kirsher if (spent < budget) { 3369d9a6973SBen Hutchings if (efx_channel_has_rx_queue(channel) && 337874aeea5SJeff Kirsher efx->irq_rx_adaptive && 338874aeea5SJeff Kirsher unlikely(++channel->irq_count == 1000)) { 339539de7c5SBert Kenward efx_update_irq_mod(efx, channel); 340874aeea5SJeff Kirsher } 341874aeea5SJeff Kirsher 342874aeea5SJeff Kirsher efx_filter_rfs_expire(channel); 343874aeea5SJeff Kirsher 344874aeea5SJeff Kirsher /* There is no race here; although napi_disable() will 345874aeea5SJeff Kirsher * only wait for napi_complete(), this isn't a problem 346514bedbcSBen Hutchings * since efx_nic_eventq_read_ack() will have no effect if 347874aeea5SJeff Kirsher * interrupts have already been disabled. 348874aeea5SJeff Kirsher */ 349f820c0acSBert Kenward if (napi_complete_done(napi, spent)) 350514bedbcSBen Hutchings efx_nic_eventq_read_ack(channel); 351874aeea5SJeff Kirsher } 352874aeea5SJeff Kirsher 353874aeea5SJeff Kirsher return spent; 354874aeea5SJeff Kirsher } 355874aeea5SJeff Kirsher 356874aeea5SJeff Kirsher /* Create event queue 357874aeea5SJeff Kirsher * Event queue memory allocations are done only once. If the channel 358874aeea5SJeff Kirsher * is reset, the memory buffer will be reused; this guards against 359874aeea5SJeff Kirsher * errors during channel reset and also simplifies interrupt handling. 360874aeea5SJeff Kirsher */ 361874aeea5SJeff Kirsher static int efx_probe_eventq(struct efx_channel *channel) 362874aeea5SJeff Kirsher { 363874aeea5SJeff Kirsher struct efx_nic *efx = channel->efx; 364874aeea5SJeff Kirsher unsigned long entries; 365874aeea5SJeff Kirsher 36686ee5302SBen Hutchings netif_dbg(efx, probe, efx->net_dev, 367874aeea5SJeff Kirsher "chan %d create event queue\n", channel->channel); 368874aeea5SJeff Kirsher 369874aeea5SJeff Kirsher /* Build an event queue with room for one event per tx and rx buffer, 370874aeea5SJeff Kirsher * plus some extra for link state events and MCDI completions. */ 371874aeea5SJeff Kirsher entries = roundup_pow_of_two(efx->rxq_entries + efx->txq_entries + 128); 372e01b16a7SEdward Cree EFX_WARN_ON_PARANOID(entries > EFX_MAX_EVQ_SIZE); 373874aeea5SJeff Kirsher channel->eventq_mask = max(entries, EFX_MIN_EVQ_SIZE) - 1; 374874aeea5SJeff Kirsher 375874aeea5SJeff Kirsher return efx_nic_probe_eventq(channel); 376874aeea5SJeff Kirsher } 377874aeea5SJeff Kirsher 378874aeea5SJeff Kirsher /* Prepare channel's event queue */ 379261e4d96SJon Cooper static int efx_init_eventq(struct efx_channel *channel) 380874aeea5SJeff Kirsher { 38115acb1ceSBen Hutchings struct efx_nic *efx = channel->efx; 382261e4d96SJon Cooper int rc; 383261e4d96SJon Cooper 384261e4d96SJon Cooper EFX_WARN_ON_PARANOID(channel->eventq_init); 385261e4d96SJon Cooper 38615acb1ceSBen Hutchings netif_dbg(efx, drv, efx->net_dev, 387874aeea5SJeff Kirsher "chan %d init event queue\n", channel->channel); 388874aeea5SJeff Kirsher 389261e4d96SJon Cooper rc = efx_nic_init_eventq(channel); 390261e4d96SJon Cooper if (rc == 0) { 39115acb1ceSBen Hutchings efx->type->push_irq_moderation(channel); 392874aeea5SJeff Kirsher channel->eventq_read_ptr = 0; 393be3fc09cSBen Hutchings channel->eventq_init = true; 394874aeea5SJeff Kirsher } 395261e4d96SJon Cooper return rc; 396261e4d96SJon Cooper } 397874aeea5SJeff Kirsher 3989f2cb71cSBen Hutchings /* Enable event queue processing and NAPI */ 39936763266SAlexandre Rames void efx_start_eventq(struct efx_channel *channel) 4009f2cb71cSBen Hutchings { 4019f2cb71cSBen Hutchings netif_dbg(channel->efx, ifup, channel->efx->net_dev, 4029f2cb71cSBen Hutchings "chan %d start event queue\n", channel->channel); 4039f2cb71cSBen Hutchings 404514bedbcSBen Hutchings /* Make sure the NAPI handler sees the enabled flag set */ 4059f2cb71cSBen Hutchings channel->enabled = true; 4069f2cb71cSBen Hutchings smp_wmb(); 4079f2cb71cSBen Hutchings 4089f2cb71cSBen Hutchings napi_enable(&channel->napi_str); 4099f2cb71cSBen Hutchings efx_nic_eventq_read_ack(channel); 4109f2cb71cSBen Hutchings } 4119f2cb71cSBen Hutchings 4129f2cb71cSBen Hutchings /* Disable event queue processing and NAPI */ 41336763266SAlexandre Rames void efx_stop_eventq(struct efx_channel *channel) 4149f2cb71cSBen Hutchings { 4159f2cb71cSBen Hutchings if (!channel->enabled) 4169f2cb71cSBen Hutchings return; 4179f2cb71cSBen Hutchings 4189f2cb71cSBen Hutchings napi_disable(&channel->napi_str); 4199f2cb71cSBen Hutchings channel->enabled = false; 4209f2cb71cSBen Hutchings } 4219f2cb71cSBen Hutchings 422874aeea5SJeff Kirsher static void efx_fini_eventq(struct efx_channel *channel) 423874aeea5SJeff Kirsher { 424be3fc09cSBen Hutchings if (!channel->eventq_init) 425be3fc09cSBen Hutchings return; 426be3fc09cSBen Hutchings 427874aeea5SJeff Kirsher netif_dbg(channel->efx, drv, channel->efx->net_dev, 428874aeea5SJeff Kirsher "chan %d fini event queue\n", channel->channel); 429874aeea5SJeff Kirsher 430874aeea5SJeff Kirsher efx_nic_fini_eventq(channel); 431be3fc09cSBen Hutchings channel->eventq_init = false; 432874aeea5SJeff Kirsher } 433874aeea5SJeff Kirsher 434874aeea5SJeff Kirsher static void efx_remove_eventq(struct efx_channel *channel) 435874aeea5SJeff Kirsher { 436874aeea5SJeff Kirsher netif_dbg(channel->efx, drv, channel->efx->net_dev, 437874aeea5SJeff Kirsher "chan %d remove event queue\n", channel->channel); 438874aeea5SJeff Kirsher 439874aeea5SJeff Kirsher efx_nic_remove_eventq(channel); 440874aeea5SJeff Kirsher } 441874aeea5SJeff Kirsher 442874aeea5SJeff Kirsher /************************************************************************** 443874aeea5SJeff Kirsher * 444874aeea5SJeff Kirsher * Channel handling 445874aeea5SJeff Kirsher * 446874aeea5SJeff Kirsher *************************************************************************/ 447874aeea5SJeff Kirsher 4487f967c01SBen Hutchings /* Allocate and initialise a channel structure. */ 449874aeea5SJeff Kirsher static struct efx_channel * 450874aeea5SJeff Kirsher efx_alloc_channel(struct efx_nic *efx, int i, struct efx_channel *old_channel) 451874aeea5SJeff Kirsher { 452874aeea5SJeff Kirsher struct efx_channel *channel; 453874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 454874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 455874aeea5SJeff Kirsher int j; 456874aeea5SJeff Kirsher 4577f967c01SBen Hutchings channel = kzalloc(sizeof(*channel), GFP_KERNEL); 4587f967c01SBen Hutchings if (!channel) 4597f967c01SBen Hutchings return NULL; 4607f967c01SBen Hutchings 4617f967c01SBen Hutchings channel->efx = efx; 4627f967c01SBen Hutchings channel->channel = i; 4637f967c01SBen Hutchings channel->type = &efx_default_channel_type; 4647f967c01SBen Hutchings 4657f967c01SBen Hutchings for (j = 0; j < EFX_TXQ_TYPES; j++) { 4667f967c01SBen Hutchings tx_queue = &channel->tx_queue[j]; 4677f967c01SBen Hutchings tx_queue->efx = efx; 4687f967c01SBen Hutchings tx_queue->queue = i * EFX_TXQ_TYPES + j; 4697f967c01SBen Hutchings tx_queue->channel = channel; 4707f967c01SBen Hutchings } 4717f967c01SBen Hutchings 4727f967c01SBen Hutchings rx_queue = &channel->rx_queue; 4737f967c01SBen Hutchings rx_queue->efx = efx; 4747f967c01SBen Hutchings setup_timer(&rx_queue->slow_fill, efx_rx_slow_fill, 4757f967c01SBen Hutchings (unsigned long)rx_queue); 4767f967c01SBen Hutchings 4777f967c01SBen Hutchings return channel; 4787f967c01SBen Hutchings } 4797f967c01SBen Hutchings 4807f967c01SBen Hutchings /* Allocate and initialise a channel structure, copying parameters 4817f967c01SBen Hutchings * (but not resources) from an old channel structure. 4827f967c01SBen Hutchings */ 4837f967c01SBen Hutchings static struct efx_channel * 4847f967c01SBen Hutchings efx_copy_channel(const struct efx_channel *old_channel) 4857f967c01SBen Hutchings { 4867f967c01SBen Hutchings struct efx_channel *channel; 4877f967c01SBen Hutchings struct efx_rx_queue *rx_queue; 4887f967c01SBen Hutchings struct efx_tx_queue *tx_queue; 4897f967c01SBen Hutchings int j; 4907f967c01SBen Hutchings 491874aeea5SJeff Kirsher channel = kmalloc(sizeof(*channel), GFP_KERNEL); 492874aeea5SJeff Kirsher if (!channel) 493874aeea5SJeff Kirsher return NULL; 494874aeea5SJeff Kirsher 495874aeea5SJeff Kirsher *channel = *old_channel; 496874aeea5SJeff Kirsher 497874aeea5SJeff Kirsher channel->napi_dev = NULL; 49846d054f8SBert Kenward INIT_HLIST_NODE(&channel->napi_str.napi_hash_node); 49946d054f8SBert Kenward channel->napi_str.napi_id = 0; 50046d054f8SBert Kenward channel->napi_str.state = 0; 501874aeea5SJeff Kirsher memset(&channel->eventq, 0, sizeof(channel->eventq)); 502874aeea5SJeff Kirsher 503874aeea5SJeff Kirsher for (j = 0; j < EFX_TXQ_TYPES; j++) { 504874aeea5SJeff Kirsher tx_queue = &channel->tx_queue[j]; 505874aeea5SJeff Kirsher if (tx_queue->channel) 506874aeea5SJeff Kirsher tx_queue->channel = channel; 507874aeea5SJeff Kirsher tx_queue->buffer = NULL; 508874aeea5SJeff Kirsher memset(&tx_queue->txd, 0, sizeof(tx_queue->txd)); 509874aeea5SJeff Kirsher } 510874aeea5SJeff Kirsher 511874aeea5SJeff Kirsher rx_queue = &channel->rx_queue; 5127f967c01SBen Hutchings rx_queue->buffer = NULL; 5137f967c01SBen Hutchings memset(&rx_queue->rxd, 0, sizeof(rx_queue->rxd)); 514874aeea5SJeff Kirsher setup_timer(&rx_queue->slow_fill, efx_rx_slow_fill, 515874aeea5SJeff Kirsher (unsigned long)rx_queue); 516874aeea5SJeff Kirsher 517874aeea5SJeff Kirsher return channel; 518874aeea5SJeff Kirsher } 519874aeea5SJeff Kirsher 520874aeea5SJeff Kirsher static int efx_probe_channel(struct efx_channel *channel) 521874aeea5SJeff Kirsher { 522874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 523874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 524874aeea5SJeff Kirsher int rc; 525874aeea5SJeff Kirsher 526874aeea5SJeff Kirsher netif_dbg(channel->efx, probe, channel->efx->net_dev, 527874aeea5SJeff Kirsher "creating channel %d\n", channel->channel); 528874aeea5SJeff Kirsher 5297f967c01SBen Hutchings rc = channel->type->pre_probe(channel); 5307f967c01SBen Hutchings if (rc) 5317f967c01SBen Hutchings goto fail; 5327f967c01SBen Hutchings 533874aeea5SJeff Kirsher rc = efx_probe_eventq(channel); 534874aeea5SJeff Kirsher if (rc) 5357f967c01SBen Hutchings goto fail; 536874aeea5SJeff Kirsher 537874aeea5SJeff Kirsher efx_for_each_channel_tx_queue(tx_queue, channel) { 538874aeea5SJeff Kirsher rc = efx_probe_tx_queue(tx_queue); 539874aeea5SJeff Kirsher if (rc) 5407f967c01SBen Hutchings goto fail; 541874aeea5SJeff Kirsher } 542874aeea5SJeff Kirsher 543874aeea5SJeff Kirsher efx_for_each_channel_rx_queue(rx_queue, channel) { 544874aeea5SJeff Kirsher rc = efx_probe_rx_queue(rx_queue); 545874aeea5SJeff Kirsher if (rc) 5467f967c01SBen Hutchings goto fail; 547874aeea5SJeff Kirsher } 548874aeea5SJeff Kirsher 549874aeea5SJeff Kirsher return 0; 550874aeea5SJeff Kirsher 5517f967c01SBen Hutchings fail: 5527f967c01SBen Hutchings efx_remove_channel(channel); 553874aeea5SJeff Kirsher return rc; 554874aeea5SJeff Kirsher } 555874aeea5SJeff Kirsher 5567f967c01SBen Hutchings static void 5577f967c01SBen Hutchings efx_get_channel_name(struct efx_channel *channel, char *buf, size_t len) 5587f967c01SBen Hutchings { 5597f967c01SBen Hutchings struct efx_nic *efx = channel->efx; 5607f967c01SBen Hutchings const char *type; 5617f967c01SBen Hutchings int number; 5627f967c01SBen Hutchings 5637f967c01SBen Hutchings number = channel->channel; 5647f967c01SBen Hutchings if (efx->tx_channel_offset == 0) { 5657f967c01SBen Hutchings type = ""; 5667f967c01SBen Hutchings } else if (channel->channel < efx->tx_channel_offset) { 5677f967c01SBen Hutchings type = "-rx"; 5687f967c01SBen Hutchings } else { 5697f967c01SBen Hutchings type = "-tx"; 5707f967c01SBen Hutchings number -= efx->tx_channel_offset; 5717f967c01SBen Hutchings } 5727f967c01SBen Hutchings snprintf(buf, len, "%s%s-%d", efx->name, type, number); 5737f967c01SBen Hutchings } 574874aeea5SJeff Kirsher 575874aeea5SJeff Kirsher static void efx_set_channel_names(struct efx_nic *efx) 576874aeea5SJeff Kirsher { 577874aeea5SJeff Kirsher struct efx_channel *channel; 578874aeea5SJeff Kirsher 5797f967c01SBen Hutchings efx_for_each_channel(channel, efx) 5807f967c01SBen Hutchings channel->type->get_name(channel, 581d8291187SBen Hutchings efx->msi_context[channel->channel].name, 582d8291187SBen Hutchings sizeof(efx->msi_context[0].name)); 583874aeea5SJeff Kirsher } 584874aeea5SJeff Kirsher 585874aeea5SJeff Kirsher static int efx_probe_channels(struct efx_nic *efx) 586874aeea5SJeff Kirsher { 587874aeea5SJeff Kirsher struct efx_channel *channel; 588874aeea5SJeff Kirsher int rc; 589874aeea5SJeff Kirsher 590874aeea5SJeff Kirsher /* Restart special buffer allocation */ 591874aeea5SJeff Kirsher efx->next_buffer_table = 0; 592874aeea5SJeff Kirsher 593c92aaff1SBen Hutchings /* Probe channels in reverse, so that any 'extra' channels 594c92aaff1SBen Hutchings * use the start of the buffer table. This allows the traffic 595c92aaff1SBen Hutchings * channels to be resized without moving them or wasting the 596c92aaff1SBen Hutchings * entries before them. 597c92aaff1SBen Hutchings */ 598c92aaff1SBen Hutchings efx_for_each_channel_rev(channel, efx) { 599874aeea5SJeff Kirsher rc = efx_probe_channel(channel); 600874aeea5SJeff Kirsher if (rc) { 601874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 602874aeea5SJeff Kirsher "failed to create channel %d\n", 603874aeea5SJeff Kirsher channel->channel); 604874aeea5SJeff Kirsher goto fail; 605874aeea5SJeff Kirsher } 606874aeea5SJeff Kirsher } 607874aeea5SJeff Kirsher efx_set_channel_names(efx); 608874aeea5SJeff Kirsher 609874aeea5SJeff Kirsher return 0; 610874aeea5SJeff Kirsher 611874aeea5SJeff Kirsher fail: 612874aeea5SJeff Kirsher efx_remove_channels(efx); 613874aeea5SJeff Kirsher return rc; 614874aeea5SJeff Kirsher } 615874aeea5SJeff Kirsher 616874aeea5SJeff Kirsher /* Channels are shutdown and reinitialised whilst the NIC is running 617874aeea5SJeff Kirsher * to propagate configuration changes (mtu, checksum offload), or 618874aeea5SJeff Kirsher * to clear hardware error conditions 619874aeea5SJeff Kirsher */ 6209f2cb71cSBen Hutchings static void efx_start_datapath(struct efx_nic *efx) 621874aeea5SJeff Kirsher { 622ebfcd0fdSAndrew Rybchenko netdev_features_t old_features = efx->net_dev->features; 62385740cdfSBen Hutchings bool old_rx_scatter = efx->rx_scatter; 624874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 625874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 626874aeea5SJeff Kirsher struct efx_channel *channel; 62785740cdfSBen Hutchings size_t rx_buf_len; 628874aeea5SJeff Kirsher 629874aeea5SJeff Kirsher /* Calculate the rx buffer allocation parameters required to 630874aeea5SJeff Kirsher * support the current MTU, including padding for header 631874aeea5SJeff Kirsher * alignment and overruns. 632874aeea5SJeff Kirsher */ 63343a3739dSJon Cooper efx->rx_dma_len = (efx->rx_prefix_size + 634874aeea5SJeff Kirsher EFX_MAX_FRAME_LEN(efx->net_dev->mtu) + 635874aeea5SJeff Kirsher efx->type->rx_buffer_padding); 63685740cdfSBen Hutchings rx_buf_len = (sizeof(struct efx_rx_page_state) + 6372ec03014SAndrew Rybchenko efx->rx_ip_align + efx->rx_dma_len); 63885740cdfSBen Hutchings if (rx_buf_len <= PAGE_SIZE) { 639e8c68c0aSJon Cooper efx->rx_scatter = efx->type->always_rx_scatter; 64085740cdfSBen Hutchings efx->rx_buffer_order = 0; 64185740cdfSBen Hutchings } else if (efx->type->can_rx_scatter) { 642950c54dfSBen Hutchings BUILD_BUG_ON(EFX_RX_USR_BUF_SIZE % L1_CACHE_BYTES); 64385740cdfSBen Hutchings BUILD_BUG_ON(sizeof(struct efx_rx_page_state) + 644950c54dfSBen Hutchings 2 * ALIGN(NET_IP_ALIGN + EFX_RX_USR_BUF_SIZE, 645950c54dfSBen Hutchings EFX_RX_BUF_ALIGNMENT) > 646950c54dfSBen Hutchings PAGE_SIZE); 64785740cdfSBen Hutchings efx->rx_scatter = true; 64885740cdfSBen Hutchings efx->rx_dma_len = EFX_RX_USR_BUF_SIZE; 64985740cdfSBen Hutchings efx->rx_buffer_order = 0; 65085740cdfSBen Hutchings } else { 65185740cdfSBen Hutchings efx->rx_scatter = false; 65285740cdfSBen Hutchings efx->rx_buffer_order = get_order(rx_buf_len); 65385740cdfSBen Hutchings } 65485740cdfSBen Hutchings 6551648a23fSDaniel Pieczko efx_rx_config_page_split(efx); 6561648a23fSDaniel Pieczko if (efx->rx_buffer_order) 6571648a23fSDaniel Pieczko netif_dbg(efx, drv, efx->net_dev, 6581648a23fSDaniel Pieczko "RX buf len=%u; page order=%u batch=%u\n", 6591648a23fSDaniel Pieczko efx->rx_dma_len, efx->rx_buffer_order, 6601648a23fSDaniel Pieczko efx->rx_pages_per_batch); 6611648a23fSDaniel Pieczko else 6621648a23fSDaniel Pieczko netif_dbg(efx, drv, efx->net_dev, 6631648a23fSDaniel Pieczko "RX buf len=%u step=%u bpp=%u; page batch=%u\n", 6641648a23fSDaniel Pieczko efx->rx_dma_len, efx->rx_page_buf_step, 6651648a23fSDaniel Pieczko efx->rx_bufs_per_page, efx->rx_pages_per_batch); 6662768935aSDaniel Pieczko 667ebfcd0fdSAndrew Rybchenko /* Restore previously fixed features in hw_features and remove 668ebfcd0fdSAndrew Rybchenko * features which are fixed now 669ebfcd0fdSAndrew Rybchenko */ 670ebfcd0fdSAndrew Rybchenko efx->net_dev->hw_features |= efx->net_dev->features; 671ebfcd0fdSAndrew Rybchenko efx->net_dev->hw_features &= ~efx->fixed_features; 672ebfcd0fdSAndrew Rybchenko efx->net_dev->features |= efx->fixed_features; 673ebfcd0fdSAndrew Rybchenko if (efx->net_dev->features != old_features) 674ebfcd0fdSAndrew Rybchenko netdev_features_change(efx->net_dev); 675ebfcd0fdSAndrew Rybchenko 676e8c68c0aSJon Cooper /* RX filters may also have scatter-enabled flags */ 67785740cdfSBen Hutchings if (efx->rx_scatter != old_rx_scatter) 678add72477SBen Hutchings efx->type->filter_update_rx_scatter(efx); 679874aeea5SJeff Kirsher 68014bf718fSBen Hutchings /* We must keep at least one descriptor in a TX ring empty. 68114bf718fSBen Hutchings * We could avoid this when the queue size does not exactly 68214bf718fSBen Hutchings * match the hardware ring size, but it's not that important. 68314bf718fSBen Hutchings * Therefore we stop the queue when one more skb might fill 68414bf718fSBen Hutchings * the ring completely. We wake it when half way back to 68514bf718fSBen Hutchings * empty. 68614bf718fSBen Hutchings */ 68714bf718fSBen Hutchings efx->txq_stop_thresh = efx->txq_entries - efx_tx_max_skb_descs(efx); 68814bf718fSBen Hutchings efx->txq_wake_thresh = efx->txq_stop_thresh / 2; 68914bf718fSBen Hutchings 690874aeea5SJeff Kirsher /* Initialise the channels */ 691874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 6923881d8abSAlexandre Rames efx_for_each_channel_tx_queue(tx_queue, channel) { 693874aeea5SJeff Kirsher efx_init_tx_queue(tx_queue); 6943881d8abSAlexandre Rames atomic_inc(&efx->active_queues); 6953881d8abSAlexandre Rames } 696874aeea5SJeff Kirsher 6979f2cb71cSBen Hutchings efx_for_each_channel_rx_queue(rx_queue, channel) { 698874aeea5SJeff Kirsher efx_init_rx_queue(rx_queue); 6993881d8abSAlexandre Rames atomic_inc(&efx->active_queues); 700cce28794SJon Cooper efx_stop_eventq(channel); 701cce28794SJon Cooper efx_fast_push_rx_descriptors(rx_queue, false); 702cce28794SJon Cooper efx_start_eventq(channel); 7039f2cb71cSBen Hutchings } 704874aeea5SJeff Kirsher 70585740cdfSBen Hutchings WARN_ON(channel->rx_pkt_n_frags); 706874aeea5SJeff Kirsher } 7079f2cb71cSBen Hutchings 7082ea4dc28SAlexandre Rames efx_ptp_start_datapath(efx); 7092ea4dc28SAlexandre Rames 7109f2cb71cSBen Hutchings if (netif_device_present(efx->net_dev)) 7119f2cb71cSBen Hutchings netif_tx_wake_all_queues(efx->net_dev); 712874aeea5SJeff Kirsher } 713874aeea5SJeff Kirsher 7149f2cb71cSBen Hutchings static void efx_stop_datapath(struct efx_nic *efx) 715874aeea5SJeff Kirsher { 716874aeea5SJeff Kirsher struct efx_channel *channel; 717874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 718874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 719874aeea5SJeff Kirsher int rc; 720874aeea5SJeff Kirsher 721874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 722874aeea5SJeff Kirsher BUG_ON(efx->port_enabled); 723874aeea5SJeff Kirsher 7242ea4dc28SAlexandre Rames efx_ptp_stop_datapath(efx); 7252ea4dc28SAlexandre Rames 726d8aec745SBen Hutchings /* Stop RX refill */ 727d8aec745SBen Hutchings efx_for_each_channel(channel, efx) { 728d8aec745SBen Hutchings efx_for_each_channel_rx_queue(rx_queue, channel) 729d8aec745SBen Hutchings rx_queue->refill_enabled = false; 730d8aec745SBen Hutchings } 731d8aec745SBen Hutchings 732874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 7339f2cb71cSBen Hutchings /* RX packet processing is pipelined, so wait for the 7349f2cb71cSBen Hutchings * NAPI handler to complete. At least event queue 0 7359f2cb71cSBen Hutchings * might be kept active by non-data events, so don't 7369f2cb71cSBen Hutchings * use napi_synchronize() but actually disable NAPI 7379f2cb71cSBen Hutchings * temporarily. 7389f2cb71cSBen Hutchings */ 7399f2cb71cSBen Hutchings if (efx_channel_has_rx_queue(channel)) { 7409f2cb71cSBen Hutchings efx_stop_eventq(channel); 7419f2cb71cSBen Hutchings efx_start_eventq(channel); 7429f2cb71cSBen Hutchings } 743e42c3d85SBen Hutchings } 744874aeea5SJeff Kirsher 745e42c3d85SBen Hutchings rc = efx->type->fini_dmaq(efx); 7465a6681e2SEdward Cree if (rc) { 747e42c3d85SBen Hutchings netif_err(efx, drv, efx->net_dev, "failed to flush queues\n"); 748e42c3d85SBen Hutchings } else { 749e42c3d85SBen Hutchings netif_dbg(efx, drv, efx->net_dev, 750e42c3d85SBen Hutchings "successfully flushed all queues\n"); 751e42c3d85SBen Hutchings } 752e42c3d85SBen Hutchings 753e42c3d85SBen Hutchings efx_for_each_channel(channel, efx) { 754874aeea5SJeff Kirsher efx_for_each_channel_rx_queue(rx_queue, channel) 755874aeea5SJeff Kirsher efx_fini_rx_queue(rx_queue); 756874aeea5SJeff Kirsher efx_for_each_possible_channel_tx_queue(tx_queue, channel) 757874aeea5SJeff Kirsher efx_fini_tx_queue(tx_queue); 758874aeea5SJeff Kirsher } 759874aeea5SJeff Kirsher } 760874aeea5SJeff Kirsher 761874aeea5SJeff Kirsher static void efx_remove_channel(struct efx_channel *channel) 762874aeea5SJeff Kirsher { 763874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 764874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 765874aeea5SJeff Kirsher 766874aeea5SJeff Kirsher netif_dbg(channel->efx, drv, channel->efx->net_dev, 767874aeea5SJeff Kirsher "destroy chan %d\n", channel->channel); 768874aeea5SJeff Kirsher 769874aeea5SJeff Kirsher efx_for_each_channel_rx_queue(rx_queue, channel) 770874aeea5SJeff Kirsher efx_remove_rx_queue(rx_queue); 771874aeea5SJeff Kirsher efx_for_each_possible_channel_tx_queue(tx_queue, channel) 772874aeea5SJeff Kirsher efx_remove_tx_queue(tx_queue); 773874aeea5SJeff Kirsher efx_remove_eventq(channel); 774c31e5f9fSStuart Hodgson channel->type->post_remove(channel); 775874aeea5SJeff Kirsher } 776874aeea5SJeff Kirsher 777874aeea5SJeff Kirsher static void efx_remove_channels(struct efx_nic *efx) 778874aeea5SJeff Kirsher { 779874aeea5SJeff Kirsher struct efx_channel *channel; 780874aeea5SJeff Kirsher 781874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) 782874aeea5SJeff Kirsher efx_remove_channel(channel); 783874aeea5SJeff Kirsher } 784874aeea5SJeff Kirsher 785874aeea5SJeff Kirsher int 786874aeea5SJeff Kirsher efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries) 787874aeea5SJeff Kirsher { 788874aeea5SJeff Kirsher struct efx_channel *other_channel[EFX_MAX_CHANNELS], *channel; 789874aeea5SJeff Kirsher u32 old_rxq_entries, old_txq_entries; 7907f967c01SBen Hutchings unsigned i, next_buffer_table = 0; 791261e4d96SJon Cooper int rc, rc2; 7928b7325b4SBen Hutchings 7938b7325b4SBen Hutchings rc = efx_check_disabled(efx); 7948b7325b4SBen Hutchings if (rc) 7958b7325b4SBen Hutchings return rc; 7967f967c01SBen Hutchings 7977f967c01SBen Hutchings /* Not all channels should be reallocated. We must avoid 7987f967c01SBen Hutchings * reallocating their buffer table entries. 7997f967c01SBen Hutchings */ 8007f967c01SBen Hutchings efx_for_each_channel(channel, efx) { 8017f967c01SBen Hutchings struct efx_rx_queue *rx_queue; 8027f967c01SBen Hutchings struct efx_tx_queue *tx_queue; 8037f967c01SBen Hutchings 8047f967c01SBen Hutchings if (channel->type->copy) 8057f967c01SBen Hutchings continue; 8067f967c01SBen Hutchings next_buffer_table = max(next_buffer_table, 8077f967c01SBen Hutchings channel->eventq.index + 8087f967c01SBen Hutchings channel->eventq.entries); 8097f967c01SBen Hutchings efx_for_each_channel_rx_queue(rx_queue, channel) 8107f967c01SBen Hutchings next_buffer_table = max(next_buffer_table, 8117f967c01SBen Hutchings rx_queue->rxd.index + 8127f967c01SBen Hutchings rx_queue->rxd.entries); 8137f967c01SBen Hutchings efx_for_each_channel_tx_queue(tx_queue, channel) 8147f967c01SBen Hutchings next_buffer_table = max(next_buffer_table, 8157f967c01SBen Hutchings tx_queue->txd.index + 8167f967c01SBen Hutchings tx_queue->txd.entries); 8177f967c01SBen Hutchings } 818874aeea5SJeff Kirsher 81929c69a48SBen Hutchings efx_device_detach_sync(efx); 820874aeea5SJeff Kirsher efx_stop_all(efx); 821d8291187SBen Hutchings efx_soft_disable_interrupts(efx); 822874aeea5SJeff Kirsher 8237f967c01SBen Hutchings /* Clone channels (where possible) */ 824874aeea5SJeff Kirsher memset(other_channel, 0, sizeof(other_channel)); 825874aeea5SJeff Kirsher for (i = 0; i < efx->n_channels; i++) { 8267f967c01SBen Hutchings channel = efx->channel[i]; 8277f967c01SBen Hutchings if (channel->type->copy) 8287f967c01SBen Hutchings channel = channel->type->copy(channel); 829874aeea5SJeff Kirsher if (!channel) { 830874aeea5SJeff Kirsher rc = -ENOMEM; 831874aeea5SJeff Kirsher goto out; 832874aeea5SJeff Kirsher } 833874aeea5SJeff Kirsher other_channel[i] = channel; 834874aeea5SJeff Kirsher } 835874aeea5SJeff Kirsher 836874aeea5SJeff Kirsher /* Swap entry counts and channel pointers */ 837874aeea5SJeff Kirsher old_rxq_entries = efx->rxq_entries; 838874aeea5SJeff Kirsher old_txq_entries = efx->txq_entries; 839874aeea5SJeff Kirsher efx->rxq_entries = rxq_entries; 840874aeea5SJeff Kirsher efx->txq_entries = txq_entries; 841874aeea5SJeff Kirsher for (i = 0; i < efx->n_channels; i++) { 842874aeea5SJeff Kirsher channel = efx->channel[i]; 843874aeea5SJeff Kirsher efx->channel[i] = other_channel[i]; 844874aeea5SJeff Kirsher other_channel[i] = channel; 845874aeea5SJeff Kirsher } 846874aeea5SJeff Kirsher 8477f967c01SBen Hutchings /* Restart buffer table allocation */ 8487f967c01SBen Hutchings efx->next_buffer_table = next_buffer_table; 8497f967c01SBen Hutchings 8507f967c01SBen Hutchings for (i = 0; i < efx->n_channels; i++) { 8517f967c01SBen Hutchings channel = efx->channel[i]; 8527f967c01SBen Hutchings if (!channel->type->copy) 8537f967c01SBen Hutchings continue; 8547f967c01SBen Hutchings rc = efx_probe_channel(channel); 855874aeea5SJeff Kirsher if (rc) 856874aeea5SJeff Kirsher goto rollback; 8577f967c01SBen Hutchings efx_init_napi_channel(efx->channel[i]); 858874aeea5SJeff Kirsher } 859874aeea5SJeff Kirsher 8607f967c01SBen Hutchings out: 8617f967c01SBen Hutchings /* Destroy unused channel structures */ 8627f967c01SBen Hutchings for (i = 0; i < efx->n_channels; i++) { 8637f967c01SBen Hutchings channel = other_channel[i]; 8647f967c01SBen Hutchings if (channel && channel->type->copy) { 8657f967c01SBen Hutchings efx_fini_napi_channel(channel); 8667f967c01SBen Hutchings efx_remove_channel(channel); 8677f967c01SBen Hutchings kfree(channel); 8687f967c01SBen Hutchings } 8697f967c01SBen Hutchings } 8707f967c01SBen Hutchings 871261e4d96SJon Cooper rc2 = efx_soft_enable_interrupts(efx); 872261e4d96SJon Cooper if (rc2) { 873261e4d96SJon Cooper rc = rc ? rc : rc2; 874261e4d96SJon Cooper netif_err(efx, drv, efx->net_dev, 875261e4d96SJon Cooper "unable to restart interrupts on channel reallocation\n"); 876261e4d96SJon Cooper efx_schedule_reset(efx, RESET_TYPE_DISABLE); 877261e4d96SJon Cooper } else { 878874aeea5SJeff Kirsher efx_start_all(efx); 87929c69a48SBen Hutchings netif_device_attach(efx->net_dev); 880261e4d96SJon Cooper } 881874aeea5SJeff Kirsher return rc; 882874aeea5SJeff Kirsher 883874aeea5SJeff Kirsher rollback: 884874aeea5SJeff Kirsher /* Swap back */ 885874aeea5SJeff Kirsher efx->rxq_entries = old_rxq_entries; 886874aeea5SJeff Kirsher efx->txq_entries = old_txq_entries; 887874aeea5SJeff Kirsher for (i = 0; i < efx->n_channels; i++) { 888874aeea5SJeff Kirsher channel = efx->channel[i]; 889874aeea5SJeff Kirsher efx->channel[i] = other_channel[i]; 890874aeea5SJeff Kirsher other_channel[i] = channel; 891874aeea5SJeff Kirsher } 892874aeea5SJeff Kirsher goto out; 893874aeea5SJeff Kirsher } 894874aeea5SJeff Kirsher 895874aeea5SJeff Kirsher void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue) 896874aeea5SJeff Kirsher { 897874aeea5SJeff Kirsher mod_timer(&rx_queue->slow_fill, jiffies + msecs_to_jiffies(100)); 898874aeea5SJeff Kirsher } 899874aeea5SJeff Kirsher 9007f967c01SBen Hutchings static const struct efx_channel_type efx_default_channel_type = { 9017f967c01SBen Hutchings .pre_probe = efx_channel_dummy_op_int, 902c31e5f9fSStuart Hodgson .post_remove = efx_channel_dummy_op_void, 9037f967c01SBen Hutchings .get_name = efx_get_channel_name, 9047f967c01SBen Hutchings .copy = efx_copy_channel, 9057f967c01SBen Hutchings .keep_eventq = false, 9067f967c01SBen Hutchings }; 9077f967c01SBen Hutchings 9087f967c01SBen Hutchings int efx_channel_dummy_op_int(struct efx_channel *channel) 9097f967c01SBen Hutchings { 9107f967c01SBen Hutchings return 0; 9117f967c01SBen Hutchings } 9127f967c01SBen Hutchings 913c31e5f9fSStuart Hodgson void efx_channel_dummy_op_void(struct efx_channel *channel) 914c31e5f9fSStuart Hodgson { 915c31e5f9fSStuart Hodgson } 916c31e5f9fSStuart Hodgson 917874aeea5SJeff Kirsher /************************************************************************** 918874aeea5SJeff Kirsher * 919874aeea5SJeff Kirsher * Port handling 920874aeea5SJeff Kirsher * 921874aeea5SJeff Kirsher **************************************************************************/ 922874aeea5SJeff Kirsher 923874aeea5SJeff Kirsher /* This ensures that the kernel is kept informed (via 924874aeea5SJeff Kirsher * netif_carrier_on/off) of the link status, and also maintains the 925874aeea5SJeff Kirsher * link status's stop on the port's TX queue. 926874aeea5SJeff Kirsher */ 927874aeea5SJeff Kirsher void efx_link_status_changed(struct efx_nic *efx) 928874aeea5SJeff Kirsher { 929874aeea5SJeff Kirsher struct efx_link_state *link_state = &efx->link_state; 930874aeea5SJeff Kirsher 931874aeea5SJeff Kirsher /* SFC Bug 5356: A net_dev notifier is registered, so we must ensure 932874aeea5SJeff Kirsher * that no events are triggered between unregister_netdev() and the 933874aeea5SJeff Kirsher * driver unloading. A more general condition is that NETDEV_CHANGE 934874aeea5SJeff Kirsher * can only be generated between NETDEV_UP and NETDEV_DOWN */ 935874aeea5SJeff Kirsher if (!netif_running(efx->net_dev)) 936874aeea5SJeff Kirsher return; 937874aeea5SJeff Kirsher 938874aeea5SJeff Kirsher if (link_state->up != netif_carrier_ok(efx->net_dev)) { 939874aeea5SJeff Kirsher efx->n_link_state_changes++; 940874aeea5SJeff Kirsher 941874aeea5SJeff Kirsher if (link_state->up) 942874aeea5SJeff Kirsher netif_carrier_on(efx->net_dev); 943874aeea5SJeff Kirsher else 944874aeea5SJeff Kirsher netif_carrier_off(efx->net_dev); 945874aeea5SJeff Kirsher } 946874aeea5SJeff Kirsher 947874aeea5SJeff Kirsher /* Status message for kernel log */ 9482aa9ef11SBen Hutchings if (link_state->up) 949874aeea5SJeff Kirsher netif_info(efx, link, efx->net_dev, 950964e6135SBen Hutchings "link up at %uMbps %s-duplex (MTU %d)\n", 951874aeea5SJeff Kirsher link_state->speed, link_state->fd ? "full" : "half", 952964e6135SBen Hutchings efx->net_dev->mtu); 9532aa9ef11SBen Hutchings else 954874aeea5SJeff Kirsher netif_info(efx, link, efx->net_dev, "link down\n"); 955874aeea5SJeff Kirsher } 956874aeea5SJeff Kirsher 957874aeea5SJeff Kirsher void efx_link_set_advertising(struct efx_nic *efx, u32 advertising) 958874aeea5SJeff Kirsher { 959874aeea5SJeff Kirsher efx->link_advertising = advertising; 960874aeea5SJeff Kirsher if (advertising) { 961874aeea5SJeff Kirsher if (advertising & ADVERTISED_Pause) 962874aeea5SJeff Kirsher efx->wanted_fc |= (EFX_FC_TX | EFX_FC_RX); 963874aeea5SJeff Kirsher else 964874aeea5SJeff Kirsher efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX); 965874aeea5SJeff Kirsher if (advertising & ADVERTISED_Asym_Pause) 966874aeea5SJeff Kirsher efx->wanted_fc ^= EFX_FC_TX; 967874aeea5SJeff Kirsher } 968874aeea5SJeff Kirsher } 969874aeea5SJeff Kirsher 970874aeea5SJeff Kirsher void efx_link_set_wanted_fc(struct efx_nic *efx, u8 wanted_fc) 971874aeea5SJeff Kirsher { 972874aeea5SJeff Kirsher efx->wanted_fc = wanted_fc; 973874aeea5SJeff Kirsher if (efx->link_advertising) { 974874aeea5SJeff Kirsher if (wanted_fc & EFX_FC_RX) 975874aeea5SJeff Kirsher efx->link_advertising |= (ADVERTISED_Pause | 976874aeea5SJeff Kirsher ADVERTISED_Asym_Pause); 977874aeea5SJeff Kirsher else 978874aeea5SJeff Kirsher efx->link_advertising &= ~(ADVERTISED_Pause | 979874aeea5SJeff Kirsher ADVERTISED_Asym_Pause); 980874aeea5SJeff Kirsher if (wanted_fc & EFX_FC_TX) 981874aeea5SJeff Kirsher efx->link_advertising ^= ADVERTISED_Asym_Pause; 982874aeea5SJeff Kirsher } 983874aeea5SJeff Kirsher } 984874aeea5SJeff Kirsher 985874aeea5SJeff Kirsher static void efx_fini_port(struct efx_nic *efx); 986874aeea5SJeff Kirsher 9870d322413SEdward Cree /* We assume that efx->type->reconfigure_mac will always try to sync RX 9880d322413SEdward Cree * filters and therefore needs to read-lock the filter table against freeing 9890d322413SEdward Cree */ 9900d322413SEdward Cree void efx_mac_reconfigure(struct efx_nic *efx) 9910d322413SEdward Cree { 9920d322413SEdward Cree down_read(&efx->filter_sem); 9930d322413SEdward Cree efx->type->reconfigure_mac(efx); 9940d322413SEdward Cree up_read(&efx->filter_sem); 9950d322413SEdward Cree } 9960d322413SEdward Cree 997874aeea5SJeff Kirsher /* Push loopback/power/transmit disable settings to the PHY, and reconfigure 998874aeea5SJeff Kirsher * the MAC appropriately. All other PHY configuration changes are pushed 999874aeea5SJeff Kirsher * through phy_op->set_settings(), and pushed asynchronously to the MAC 1000874aeea5SJeff Kirsher * through efx_monitor(). 1001874aeea5SJeff Kirsher * 1002874aeea5SJeff Kirsher * Callers must hold the mac_lock 1003874aeea5SJeff Kirsher */ 1004874aeea5SJeff Kirsher int __efx_reconfigure_port(struct efx_nic *efx) 1005874aeea5SJeff Kirsher { 1006874aeea5SJeff Kirsher enum efx_phy_mode phy_mode; 1007874aeea5SJeff Kirsher int rc; 1008874aeea5SJeff Kirsher 1009874aeea5SJeff Kirsher WARN_ON(!mutex_is_locked(&efx->mac_lock)); 1010874aeea5SJeff Kirsher 1011874aeea5SJeff Kirsher /* Disable PHY transmit in mac level loopbacks */ 1012874aeea5SJeff Kirsher phy_mode = efx->phy_mode; 1013874aeea5SJeff Kirsher if (LOOPBACK_INTERNAL(efx)) 1014874aeea5SJeff Kirsher efx->phy_mode |= PHY_MODE_TX_DISABLED; 1015874aeea5SJeff Kirsher else 1016874aeea5SJeff Kirsher efx->phy_mode &= ~PHY_MODE_TX_DISABLED; 1017874aeea5SJeff Kirsher 1018874aeea5SJeff Kirsher rc = efx->type->reconfigure_port(efx); 1019874aeea5SJeff Kirsher 1020874aeea5SJeff Kirsher if (rc) 1021874aeea5SJeff Kirsher efx->phy_mode = phy_mode; 1022874aeea5SJeff Kirsher 1023874aeea5SJeff Kirsher return rc; 1024874aeea5SJeff Kirsher } 1025874aeea5SJeff Kirsher 1026874aeea5SJeff Kirsher /* Reinitialise the MAC to pick up new PHY settings, even if the port is 1027874aeea5SJeff Kirsher * disabled. */ 1028874aeea5SJeff Kirsher int efx_reconfigure_port(struct efx_nic *efx) 1029874aeea5SJeff Kirsher { 1030874aeea5SJeff Kirsher int rc; 1031874aeea5SJeff Kirsher 1032874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 1033874aeea5SJeff Kirsher 1034874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1035874aeea5SJeff Kirsher rc = __efx_reconfigure_port(efx); 1036874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1037874aeea5SJeff Kirsher 1038874aeea5SJeff Kirsher return rc; 1039874aeea5SJeff Kirsher } 1040874aeea5SJeff Kirsher 1041874aeea5SJeff Kirsher /* Asynchronous work item for changing MAC promiscuity and multicast 1042874aeea5SJeff Kirsher * hash. Avoid a drain/rx_ingress enable by reconfiguring the current 1043874aeea5SJeff Kirsher * MAC directly. */ 1044874aeea5SJeff Kirsher static void efx_mac_work(struct work_struct *data) 1045874aeea5SJeff Kirsher { 1046874aeea5SJeff Kirsher struct efx_nic *efx = container_of(data, struct efx_nic, mac_work); 1047874aeea5SJeff Kirsher 1048874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 104930b81cdaSBen Hutchings if (efx->port_enabled) 10500d322413SEdward Cree efx_mac_reconfigure(efx); 1051874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1052874aeea5SJeff Kirsher } 1053874aeea5SJeff Kirsher 1054874aeea5SJeff Kirsher static int efx_probe_port(struct efx_nic *efx) 1055874aeea5SJeff Kirsher { 1056874aeea5SJeff Kirsher int rc; 1057874aeea5SJeff Kirsher 1058874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, "create port\n"); 1059874aeea5SJeff Kirsher 1060874aeea5SJeff Kirsher if (phy_flash_cfg) 1061874aeea5SJeff Kirsher efx->phy_mode = PHY_MODE_SPECIAL; 1062874aeea5SJeff Kirsher 1063874aeea5SJeff Kirsher /* Connect up MAC/PHY operations table */ 1064874aeea5SJeff Kirsher rc = efx->type->probe_port(efx); 1065874aeea5SJeff Kirsher if (rc) 1066874aeea5SJeff Kirsher return rc; 1067874aeea5SJeff Kirsher 1068e332bcb3SBen Hutchings /* Initialise MAC address to permanent address */ 1069cd84ff4dSEdward Cree ether_addr_copy(efx->net_dev->dev_addr, efx->net_dev->perm_addr); 1070874aeea5SJeff Kirsher 1071874aeea5SJeff Kirsher return 0; 1072874aeea5SJeff Kirsher } 1073874aeea5SJeff Kirsher 1074874aeea5SJeff Kirsher static int efx_init_port(struct efx_nic *efx) 1075874aeea5SJeff Kirsher { 1076874aeea5SJeff Kirsher int rc; 1077874aeea5SJeff Kirsher 1078874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "init port\n"); 1079874aeea5SJeff Kirsher 1080874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1081874aeea5SJeff Kirsher 1082874aeea5SJeff Kirsher rc = efx->phy_op->init(efx); 1083874aeea5SJeff Kirsher if (rc) 1084874aeea5SJeff Kirsher goto fail1; 1085874aeea5SJeff Kirsher 1086874aeea5SJeff Kirsher efx->port_initialized = true; 1087874aeea5SJeff Kirsher 1088874aeea5SJeff Kirsher /* Reconfigure the MAC before creating dma queues (required for 1089874aeea5SJeff Kirsher * Falcon/A1 where RX_INGR_EN/TX_DRAIN_EN isn't supported) */ 10900d322413SEdward Cree efx_mac_reconfigure(efx); 1091874aeea5SJeff Kirsher 1092874aeea5SJeff Kirsher /* Ensure the PHY advertises the correct flow control settings */ 1093874aeea5SJeff Kirsher rc = efx->phy_op->reconfigure(efx); 1094267d9d73SEdward Cree if (rc && rc != -EPERM) 1095874aeea5SJeff Kirsher goto fail2; 1096874aeea5SJeff Kirsher 1097874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1098874aeea5SJeff Kirsher return 0; 1099874aeea5SJeff Kirsher 1100874aeea5SJeff Kirsher fail2: 1101874aeea5SJeff Kirsher efx->phy_op->fini(efx); 1102874aeea5SJeff Kirsher fail1: 1103874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1104874aeea5SJeff Kirsher return rc; 1105874aeea5SJeff Kirsher } 1106874aeea5SJeff Kirsher 1107874aeea5SJeff Kirsher static void efx_start_port(struct efx_nic *efx) 1108874aeea5SJeff Kirsher { 1109874aeea5SJeff Kirsher netif_dbg(efx, ifup, efx->net_dev, "start port\n"); 1110874aeea5SJeff Kirsher BUG_ON(efx->port_enabled); 1111874aeea5SJeff Kirsher 1112874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1113874aeea5SJeff Kirsher efx->port_enabled = true; 1114874aeea5SJeff Kirsher 1115d615c039SBen Hutchings /* Ensure MAC ingress/egress is enabled */ 11160d322413SEdward Cree efx_mac_reconfigure(efx); 1117874aeea5SJeff Kirsher 1118874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1119874aeea5SJeff Kirsher } 1120874aeea5SJeff Kirsher 1121d615c039SBen Hutchings /* Cancel work for MAC reconfiguration, periodic hardware monitoring 1122d615c039SBen Hutchings * and the async self-test, wait for them to finish and prevent them 1123d615c039SBen Hutchings * being scheduled again. This doesn't cover online resets, which 1124d615c039SBen Hutchings * should only be cancelled when removing the device. 1125d615c039SBen Hutchings */ 1126874aeea5SJeff Kirsher static void efx_stop_port(struct efx_nic *efx) 1127874aeea5SJeff Kirsher { 1128874aeea5SJeff Kirsher netif_dbg(efx, ifdown, efx->net_dev, "stop port\n"); 1129874aeea5SJeff Kirsher 1130d615c039SBen Hutchings EFX_ASSERT_RESET_SERIALISED(efx); 1131d615c039SBen Hutchings 1132874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1133874aeea5SJeff Kirsher efx->port_enabled = false; 1134874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1135874aeea5SJeff Kirsher 1136874aeea5SJeff Kirsher /* Serialise against efx_set_multicast_list() */ 1137874aeea5SJeff Kirsher netif_addr_lock_bh(efx->net_dev); 1138874aeea5SJeff Kirsher netif_addr_unlock_bh(efx->net_dev); 1139d615c039SBen Hutchings 1140d615c039SBen Hutchings cancel_delayed_work_sync(&efx->monitor_work); 1141d615c039SBen Hutchings efx_selftest_async_cancel(efx); 1142d615c039SBen Hutchings cancel_work_sync(&efx->mac_work); 1143874aeea5SJeff Kirsher } 1144874aeea5SJeff Kirsher 1145874aeea5SJeff Kirsher static void efx_fini_port(struct efx_nic *efx) 1146874aeea5SJeff Kirsher { 1147874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "shut down port\n"); 1148874aeea5SJeff Kirsher 1149874aeea5SJeff Kirsher if (!efx->port_initialized) 1150874aeea5SJeff Kirsher return; 1151874aeea5SJeff Kirsher 1152874aeea5SJeff Kirsher efx->phy_op->fini(efx); 1153874aeea5SJeff Kirsher efx->port_initialized = false; 1154874aeea5SJeff Kirsher 1155874aeea5SJeff Kirsher efx->link_state.up = false; 1156874aeea5SJeff Kirsher efx_link_status_changed(efx); 1157874aeea5SJeff Kirsher } 1158874aeea5SJeff Kirsher 1159874aeea5SJeff Kirsher static void efx_remove_port(struct efx_nic *efx) 1160874aeea5SJeff Kirsher { 1161874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "destroying port\n"); 1162874aeea5SJeff Kirsher 1163874aeea5SJeff Kirsher efx->type->remove_port(efx); 1164874aeea5SJeff Kirsher } 1165874aeea5SJeff Kirsher 1166874aeea5SJeff Kirsher /************************************************************************** 1167874aeea5SJeff Kirsher * 1168874aeea5SJeff Kirsher * NIC handling 1169874aeea5SJeff Kirsher * 1170874aeea5SJeff Kirsher **************************************************************************/ 1171874aeea5SJeff Kirsher 11720bcf4a64SBen Hutchings static LIST_HEAD(efx_primary_list); 11730bcf4a64SBen Hutchings static LIST_HEAD(efx_unassociated_list); 11740bcf4a64SBen Hutchings 11750bcf4a64SBen Hutchings static bool efx_same_controller(struct efx_nic *left, struct efx_nic *right) 11760bcf4a64SBen Hutchings { 11770bcf4a64SBen Hutchings return left->type == right->type && 11780bcf4a64SBen Hutchings left->vpd_sn && right->vpd_sn && 11790bcf4a64SBen Hutchings !strcmp(left->vpd_sn, right->vpd_sn); 11800bcf4a64SBen Hutchings } 11810bcf4a64SBen Hutchings 11820bcf4a64SBen Hutchings static void efx_associate(struct efx_nic *efx) 11830bcf4a64SBen Hutchings { 11840bcf4a64SBen Hutchings struct efx_nic *other, *next; 11850bcf4a64SBen Hutchings 11860bcf4a64SBen Hutchings if (efx->primary == efx) { 11870bcf4a64SBen Hutchings /* Adding primary function; look for secondaries */ 11880bcf4a64SBen Hutchings 11890bcf4a64SBen Hutchings netif_dbg(efx, probe, efx->net_dev, "adding to primary list\n"); 11900bcf4a64SBen Hutchings list_add_tail(&efx->node, &efx_primary_list); 11910bcf4a64SBen Hutchings 11920bcf4a64SBen Hutchings list_for_each_entry_safe(other, next, &efx_unassociated_list, 11930bcf4a64SBen Hutchings node) { 11940bcf4a64SBen Hutchings if (efx_same_controller(efx, other)) { 11950bcf4a64SBen Hutchings list_del(&other->node); 11960bcf4a64SBen Hutchings netif_dbg(other, probe, other->net_dev, 11970bcf4a64SBen Hutchings "moving to secondary list of %s %s\n", 11980bcf4a64SBen Hutchings pci_name(efx->pci_dev), 11990bcf4a64SBen Hutchings efx->net_dev->name); 12000bcf4a64SBen Hutchings list_add_tail(&other->node, 12010bcf4a64SBen Hutchings &efx->secondary_list); 12020bcf4a64SBen Hutchings other->primary = efx; 12030bcf4a64SBen Hutchings } 12040bcf4a64SBen Hutchings } 12050bcf4a64SBen Hutchings } else { 12060bcf4a64SBen Hutchings /* Adding secondary function; look for primary */ 12070bcf4a64SBen Hutchings 12080bcf4a64SBen Hutchings list_for_each_entry(other, &efx_primary_list, node) { 12090bcf4a64SBen Hutchings if (efx_same_controller(efx, other)) { 12100bcf4a64SBen Hutchings netif_dbg(efx, probe, efx->net_dev, 12110bcf4a64SBen Hutchings "adding to secondary list of %s %s\n", 12120bcf4a64SBen Hutchings pci_name(other->pci_dev), 12130bcf4a64SBen Hutchings other->net_dev->name); 12140bcf4a64SBen Hutchings list_add_tail(&efx->node, 12150bcf4a64SBen Hutchings &other->secondary_list); 12160bcf4a64SBen Hutchings efx->primary = other; 12170bcf4a64SBen Hutchings return; 12180bcf4a64SBen Hutchings } 12190bcf4a64SBen Hutchings } 12200bcf4a64SBen Hutchings 12210bcf4a64SBen Hutchings netif_dbg(efx, probe, efx->net_dev, 12220bcf4a64SBen Hutchings "adding to unassociated list\n"); 12230bcf4a64SBen Hutchings list_add_tail(&efx->node, &efx_unassociated_list); 12240bcf4a64SBen Hutchings } 12250bcf4a64SBen Hutchings } 12260bcf4a64SBen Hutchings 12270bcf4a64SBen Hutchings static void efx_dissociate(struct efx_nic *efx) 12280bcf4a64SBen Hutchings { 12290bcf4a64SBen Hutchings struct efx_nic *other, *next; 12300bcf4a64SBen Hutchings 12310bcf4a64SBen Hutchings list_del(&efx->node); 12320bcf4a64SBen Hutchings efx->primary = NULL; 12330bcf4a64SBen Hutchings 12340bcf4a64SBen Hutchings list_for_each_entry_safe(other, next, &efx->secondary_list, node) { 12350bcf4a64SBen Hutchings list_del(&other->node); 12360bcf4a64SBen Hutchings netif_dbg(other, probe, other->net_dev, 12370bcf4a64SBen Hutchings "moving to unassociated list\n"); 12380bcf4a64SBen Hutchings list_add_tail(&other->node, &efx_unassociated_list); 12390bcf4a64SBen Hutchings other->primary = NULL; 12400bcf4a64SBen Hutchings } 12410bcf4a64SBen Hutchings } 12420bcf4a64SBen Hutchings 1243874aeea5SJeff Kirsher /* This configures the PCI device to enable I/O and DMA. */ 1244874aeea5SJeff Kirsher static int efx_init_io(struct efx_nic *efx) 1245874aeea5SJeff Kirsher { 1246874aeea5SJeff Kirsher struct pci_dev *pci_dev = efx->pci_dev; 1247874aeea5SJeff Kirsher dma_addr_t dma_mask = efx->type->max_dma_mask; 1248b105798fSBen Hutchings unsigned int mem_map_size = efx->type->mem_map_size(efx); 124902246a7fSShradha Shah int rc, bar; 1250874aeea5SJeff Kirsher 1251874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, "initialising I/O\n"); 1252874aeea5SJeff Kirsher 125302246a7fSShradha Shah bar = efx->type->mem_bar; 125402246a7fSShradha Shah 1255874aeea5SJeff Kirsher rc = pci_enable_device(pci_dev); 1256874aeea5SJeff Kirsher if (rc) { 1257874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1258874aeea5SJeff Kirsher "failed to enable PCI device\n"); 1259874aeea5SJeff Kirsher goto fail1; 1260874aeea5SJeff Kirsher } 1261874aeea5SJeff Kirsher 1262874aeea5SJeff Kirsher pci_set_master(pci_dev); 1263874aeea5SJeff Kirsher 1264874aeea5SJeff Kirsher /* Set the PCI DMA mask. Try all possibilities from our 1265874aeea5SJeff Kirsher * genuine mask down to 32 bits, because some architectures 1266874aeea5SJeff Kirsher * (e.g. x86_64 with iommu_sac_force set) will allow 40 bit 1267874aeea5SJeff Kirsher * masks event though they reject 46 bit masks. 1268874aeea5SJeff Kirsher */ 1269874aeea5SJeff Kirsher while (dma_mask > 0x7fffffffUL) { 12709663dedaSRussell King rc = dma_set_mask_and_coherent(&pci_dev->dev, dma_mask); 1271e9e01846SBen Hutchings if (rc == 0) 1272874aeea5SJeff Kirsher break; 1273874aeea5SJeff Kirsher dma_mask >>= 1; 1274874aeea5SJeff Kirsher } 1275874aeea5SJeff Kirsher if (rc) { 1276874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1277874aeea5SJeff Kirsher "could not find a suitable DMA mask\n"); 1278874aeea5SJeff Kirsher goto fail2; 1279874aeea5SJeff Kirsher } 1280874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, 1281874aeea5SJeff Kirsher "using DMA mask %llx\n", (unsigned long long) dma_mask); 1282874aeea5SJeff Kirsher 128302246a7fSShradha Shah efx->membase_phys = pci_resource_start(efx->pci_dev, bar); 128402246a7fSShradha Shah rc = pci_request_region(pci_dev, bar, "sfc"); 1285874aeea5SJeff Kirsher if (rc) { 1286874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1287874aeea5SJeff Kirsher "request for memory BAR failed\n"); 1288874aeea5SJeff Kirsher rc = -EIO; 1289874aeea5SJeff Kirsher goto fail3; 1290874aeea5SJeff Kirsher } 1291b105798fSBen Hutchings efx->membase = ioremap_nocache(efx->membase_phys, mem_map_size); 1292874aeea5SJeff Kirsher if (!efx->membase) { 1293874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1294874aeea5SJeff Kirsher "could not map memory BAR at %llx+%x\n", 1295b105798fSBen Hutchings (unsigned long long)efx->membase_phys, mem_map_size); 1296874aeea5SJeff Kirsher rc = -ENOMEM; 1297874aeea5SJeff Kirsher goto fail4; 1298874aeea5SJeff Kirsher } 1299874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, 1300874aeea5SJeff Kirsher "memory BAR at %llx+%x (virtual %p)\n", 1301b105798fSBen Hutchings (unsigned long long)efx->membase_phys, mem_map_size, 1302b105798fSBen Hutchings efx->membase); 1303874aeea5SJeff Kirsher 1304874aeea5SJeff Kirsher return 0; 1305874aeea5SJeff Kirsher 1306874aeea5SJeff Kirsher fail4: 130702246a7fSShradha Shah pci_release_region(efx->pci_dev, bar); 1308874aeea5SJeff Kirsher fail3: 1309874aeea5SJeff Kirsher efx->membase_phys = 0; 1310874aeea5SJeff Kirsher fail2: 1311874aeea5SJeff Kirsher pci_disable_device(efx->pci_dev); 1312874aeea5SJeff Kirsher fail1: 1313874aeea5SJeff Kirsher return rc; 1314874aeea5SJeff Kirsher } 1315874aeea5SJeff Kirsher 1316874aeea5SJeff Kirsher static void efx_fini_io(struct efx_nic *efx) 1317874aeea5SJeff Kirsher { 131802246a7fSShradha Shah int bar; 131902246a7fSShradha Shah 1320874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "shutting down I/O\n"); 1321874aeea5SJeff Kirsher 1322874aeea5SJeff Kirsher if (efx->membase) { 1323874aeea5SJeff Kirsher iounmap(efx->membase); 1324874aeea5SJeff Kirsher efx->membase = NULL; 1325874aeea5SJeff Kirsher } 1326874aeea5SJeff Kirsher 1327874aeea5SJeff Kirsher if (efx->membase_phys) { 132802246a7fSShradha Shah bar = efx->type->mem_bar; 132902246a7fSShradha Shah pci_release_region(efx->pci_dev, bar); 1330874aeea5SJeff Kirsher efx->membase_phys = 0; 1331874aeea5SJeff Kirsher } 1332874aeea5SJeff Kirsher 13336598dad2SDaniel Pieczko /* Don't disable bus-mastering if VFs are assigned */ 13346598dad2SDaniel Pieczko if (!pci_vfs_assigned(efx->pci_dev)) 1335874aeea5SJeff Kirsher pci_disable_device(efx->pci_dev); 1336874aeea5SJeff Kirsher } 1337874aeea5SJeff Kirsher 1338267c0157SJon Cooper void efx_set_default_rx_indir_table(struct efx_nic *efx) 1339267c0157SJon Cooper { 1340267c0157SJon Cooper size_t i; 1341267c0157SJon Cooper 1342267c0157SJon Cooper for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++) 1343267c0157SJon Cooper efx->rx_indir_table[i] = 1344267c0157SJon Cooper ethtool_rxfh_indir_default(i, efx->rss_spread); 1345267c0157SJon Cooper } 1346267c0157SJon Cooper 1347a9a52506SBen Hutchings static unsigned int efx_wanted_parallelism(struct efx_nic *efx) 1348874aeea5SJeff Kirsher { 1349cdb08f8fSBen Hutchings cpumask_var_t thread_mask; 1350a16e5b24SBen Hutchings unsigned int count; 1351874aeea5SJeff Kirsher int cpu; 1352874aeea5SJeff Kirsher 1353cd2d5b52SBen Hutchings if (rss_cpus) { 1354cd2d5b52SBen Hutchings count = rss_cpus; 1355cd2d5b52SBen Hutchings } else { 1356cdb08f8fSBen Hutchings if (unlikely(!zalloc_cpumask_var(&thread_mask, GFP_KERNEL))) { 1357a9a52506SBen Hutchings netif_warn(efx, probe, efx->net_dev, 1358a9a52506SBen Hutchings "RSS disabled due to allocation failure\n"); 1359874aeea5SJeff Kirsher return 1; 1360874aeea5SJeff Kirsher } 1361874aeea5SJeff Kirsher 1362874aeea5SJeff Kirsher count = 0; 1363874aeea5SJeff Kirsher for_each_online_cpu(cpu) { 1364cdb08f8fSBen Hutchings if (!cpumask_test_cpu(cpu, thread_mask)) { 1365874aeea5SJeff Kirsher ++count; 1366cdb08f8fSBen Hutchings cpumask_or(thread_mask, thread_mask, 136706931e62SBartosz Golaszewski topology_sibling_cpumask(cpu)); 1368874aeea5SJeff Kirsher } 1369874aeea5SJeff Kirsher } 1370874aeea5SJeff Kirsher 1371cdb08f8fSBen Hutchings free_cpumask_var(thread_mask); 1372cd2d5b52SBen Hutchings } 1373cd2d5b52SBen Hutchings 1374cd2d5b52SBen Hutchings /* If RSS is requested for the PF *and* VFs then we can't write RSS 1375cd2d5b52SBen Hutchings * table entries that are inaccessible to VFs 1376cd2d5b52SBen Hutchings */ 13777fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 13787fa8d547SShradha Shah if (efx->type->sriov_wanted) { 1379d98a4ffeSShradha Shah if (efx->type->sriov_wanted(efx) && efx_vf_size(efx) > 1 && 1380cd2d5b52SBen Hutchings count > efx_vf_size(efx)) { 1381cd2d5b52SBen Hutchings netif_warn(efx, probe, efx->net_dev, 1382cd2d5b52SBen Hutchings "Reducing number of RSS channels from %u to %u for " 1383cd2d5b52SBen Hutchings "VF support. Increase vf-msix-limit to use more " 1384cd2d5b52SBen Hutchings "channels on the PF.\n", 1385cd2d5b52SBen Hutchings count, efx_vf_size(efx)); 1386cd2d5b52SBen Hutchings count = efx_vf_size(efx); 1387cd2d5b52SBen Hutchings } 13887fa8d547SShradha Shah } 13897fa8d547SShradha Shah #endif 1390cd2d5b52SBen Hutchings 1391874aeea5SJeff Kirsher return count; 1392874aeea5SJeff Kirsher } 1393874aeea5SJeff Kirsher 1394874aeea5SJeff Kirsher /* Probe the number and type of interrupts we are able to obtain, and 1395874aeea5SJeff Kirsher * the resulting numbers of channels and RX queues. 1396874aeea5SJeff Kirsher */ 1397874aeea5SJeff Kirsher static int efx_probe_interrupts(struct efx_nic *efx) 1398874aeea5SJeff Kirsher { 13997f967c01SBen Hutchings unsigned int extra_channels = 0; 14007f967c01SBen Hutchings unsigned int i, j; 1401a16e5b24SBen Hutchings int rc; 1402874aeea5SJeff Kirsher 14037f967c01SBen Hutchings for (i = 0; i < EFX_MAX_EXTRA_CHANNELS; i++) 14047f967c01SBen Hutchings if (efx->extra_channel_type[i]) 14057f967c01SBen Hutchings ++extra_channels; 14067f967c01SBen Hutchings 1407874aeea5SJeff Kirsher if (efx->interrupt_mode == EFX_INT_MODE_MSIX) { 1408874aeea5SJeff Kirsher struct msix_entry xentries[EFX_MAX_CHANNELS]; 1409a16e5b24SBen Hutchings unsigned int n_channels; 1410874aeea5SJeff Kirsher 1411a9a52506SBen Hutchings n_channels = efx_wanted_parallelism(efx); 1412b0fbdae1SShradha Shah if (efx_separate_tx_channels) 1413874aeea5SJeff Kirsher n_channels *= 2; 14147f967c01SBen Hutchings n_channels += extra_channels; 1415b105798fSBen Hutchings n_channels = min(n_channels, efx->max_channels); 1416874aeea5SJeff Kirsher 1417874aeea5SJeff Kirsher for (i = 0; i < n_channels; i++) 1418874aeea5SJeff Kirsher xentries[i].entry = i; 1419184603d8SAlexander Gordeev rc = pci_enable_msix_range(efx->pci_dev, 1420184603d8SAlexander Gordeev xentries, 1, n_channels); 1421184603d8SAlexander Gordeev if (rc < 0) { 1422184603d8SAlexander Gordeev /* Fall back to single channel MSI */ 1423184603d8SAlexander Gordeev efx->interrupt_mode = EFX_INT_MODE_MSI; 1424184603d8SAlexander Gordeev netif_err(efx, drv, efx->net_dev, 1425184603d8SAlexander Gordeev "could not enable MSI-X\n"); 1426184603d8SAlexander Gordeev } else if (rc < n_channels) { 1427874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 1428874aeea5SJeff Kirsher "WARNING: Insufficient MSI-X vectors" 1429a16e5b24SBen Hutchings " available (%d < %u).\n", rc, n_channels); 1430874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 1431874aeea5SJeff Kirsher "WARNING: Performance may be reduced.\n"); 1432874aeea5SJeff Kirsher n_channels = rc; 1433874aeea5SJeff Kirsher } 1434874aeea5SJeff Kirsher 1435184603d8SAlexander Gordeev if (rc > 0) { 1436874aeea5SJeff Kirsher efx->n_channels = n_channels; 14377f967c01SBen Hutchings if (n_channels > extra_channels) 14387f967c01SBen Hutchings n_channels -= extra_channels; 1439b0fbdae1SShradha Shah if (efx_separate_tx_channels) { 1440b0fbdae1SShradha Shah efx->n_tx_channels = min(max(n_channels / 2, 1441b0fbdae1SShradha Shah 1U), 1442b0fbdae1SShradha Shah efx->max_tx_channels); 14437f967c01SBen Hutchings efx->n_rx_channels = max(n_channels - 14447f967c01SBen Hutchings efx->n_tx_channels, 14457f967c01SBen Hutchings 1U); 1446874aeea5SJeff Kirsher } else { 1447b0fbdae1SShradha Shah efx->n_tx_channels = min(n_channels, 1448b0fbdae1SShradha Shah efx->max_tx_channels); 14497f967c01SBen Hutchings efx->n_rx_channels = n_channels; 1450874aeea5SJeff Kirsher } 14517f967c01SBen Hutchings for (i = 0; i < efx->n_channels; i++) 1452874aeea5SJeff Kirsher efx_get_channel(efx, i)->irq = 1453874aeea5SJeff Kirsher xentries[i].vector; 1454874aeea5SJeff Kirsher } 1455874aeea5SJeff Kirsher } 1456874aeea5SJeff Kirsher 1457874aeea5SJeff Kirsher /* Try single interrupt MSI */ 1458874aeea5SJeff Kirsher if (efx->interrupt_mode == EFX_INT_MODE_MSI) { 1459874aeea5SJeff Kirsher efx->n_channels = 1; 1460874aeea5SJeff Kirsher efx->n_rx_channels = 1; 1461874aeea5SJeff Kirsher efx->n_tx_channels = 1; 1462874aeea5SJeff Kirsher rc = pci_enable_msi(efx->pci_dev); 1463874aeea5SJeff Kirsher if (rc == 0) { 1464874aeea5SJeff Kirsher efx_get_channel(efx, 0)->irq = efx->pci_dev->irq; 1465874aeea5SJeff Kirsher } else { 1466874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 1467874aeea5SJeff Kirsher "could not enable MSI\n"); 1468874aeea5SJeff Kirsher efx->interrupt_mode = EFX_INT_MODE_LEGACY; 1469874aeea5SJeff Kirsher } 1470874aeea5SJeff Kirsher } 1471874aeea5SJeff Kirsher 1472874aeea5SJeff Kirsher /* Assume legacy interrupts */ 1473874aeea5SJeff Kirsher if (efx->interrupt_mode == EFX_INT_MODE_LEGACY) { 1474b0fbdae1SShradha Shah efx->n_channels = 1 + (efx_separate_tx_channels ? 1 : 0); 1475874aeea5SJeff Kirsher efx->n_rx_channels = 1; 1476874aeea5SJeff Kirsher efx->n_tx_channels = 1; 1477874aeea5SJeff Kirsher efx->legacy_irq = efx->pci_dev->irq; 1478874aeea5SJeff Kirsher } 1479874aeea5SJeff Kirsher 14807f967c01SBen Hutchings /* Assign extra channels if possible */ 14817f967c01SBen Hutchings j = efx->n_channels; 14827f967c01SBen Hutchings for (i = 0; i < EFX_MAX_EXTRA_CHANNELS; i++) { 14837f967c01SBen Hutchings if (!efx->extra_channel_type[i]) 14847f967c01SBen Hutchings continue; 14857f967c01SBen Hutchings if (efx->interrupt_mode != EFX_INT_MODE_MSIX || 14867f967c01SBen Hutchings efx->n_channels <= extra_channels) { 14877f967c01SBen Hutchings efx->extra_channel_type[i]->handle_no_channel(efx); 14887f967c01SBen Hutchings } else { 14897f967c01SBen Hutchings --j; 14907f967c01SBen Hutchings efx_get_channel(efx, j)->type = 14917f967c01SBen Hutchings efx->extra_channel_type[i]; 14927f967c01SBen Hutchings } 14937f967c01SBen Hutchings } 14947f967c01SBen Hutchings 1495cd2d5b52SBen Hutchings /* RSS might be usable on VFs even if it is disabled on the PF */ 14967fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 14977fa8d547SShradha Shah if (efx->type->sriov_wanted) { 1498327c685eSShradha Shah efx->rss_spread = ((efx->n_rx_channels > 1 || 1499d98a4ffeSShradha Shah !efx->type->sriov_wanted(efx)) ? 1500cd2d5b52SBen Hutchings efx->n_rx_channels : efx_vf_size(efx)); 15017fa8d547SShradha Shah return 0; 15027fa8d547SShradha Shah } 15037fa8d547SShradha Shah #endif 15047fa8d547SShradha Shah efx->rss_spread = efx->n_rx_channels; 1505cd2d5b52SBen Hutchings 1506874aeea5SJeff Kirsher return 0; 1507874aeea5SJeff Kirsher } 1508874aeea5SJeff Kirsher 1509261e4d96SJon Cooper static int efx_soft_enable_interrupts(struct efx_nic *efx) 1510d8291187SBen Hutchings { 1511261e4d96SJon Cooper struct efx_channel *channel, *end_channel; 1512261e4d96SJon Cooper int rc; 1513d8291187SBen Hutchings 1514d8291187SBen Hutchings BUG_ON(efx->state == STATE_DISABLED); 1515d8291187SBen Hutchings 1516d8291187SBen Hutchings efx->irq_soft_enabled = true; 1517d8291187SBen Hutchings smp_wmb(); 1518d8291187SBen Hutchings 1519d8291187SBen Hutchings efx_for_each_channel(channel, efx) { 1520261e4d96SJon Cooper if (!channel->type->keep_eventq) { 1521261e4d96SJon Cooper rc = efx_init_eventq(channel); 1522261e4d96SJon Cooper if (rc) 1523261e4d96SJon Cooper goto fail; 1524261e4d96SJon Cooper } 1525d8291187SBen Hutchings efx_start_eventq(channel); 1526d8291187SBen Hutchings } 1527d8291187SBen Hutchings 1528d8291187SBen Hutchings efx_mcdi_mode_event(efx); 1529261e4d96SJon Cooper 1530261e4d96SJon Cooper return 0; 1531261e4d96SJon Cooper fail: 1532261e4d96SJon Cooper end_channel = channel; 1533261e4d96SJon Cooper efx_for_each_channel(channel, efx) { 1534261e4d96SJon Cooper if (channel == end_channel) 1535261e4d96SJon Cooper break; 1536261e4d96SJon Cooper efx_stop_eventq(channel); 1537261e4d96SJon Cooper if (!channel->type->keep_eventq) 1538261e4d96SJon Cooper efx_fini_eventq(channel); 1539261e4d96SJon Cooper } 1540261e4d96SJon Cooper 1541261e4d96SJon Cooper return rc; 1542d8291187SBen Hutchings } 1543d8291187SBen Hutchings 1544d8291187SBen Hutchings static void efx_soft_disable_interrupts(struct efx_nic *efx) 1545d8291187SBen Hutchings { 1546d8291187SBen Hutchings struct efx_channel *channel; 1547d8291187SBen Hutchings 1548d8291187SBen Hutchings if (efx->state == STATE_DISABLED) 1549d8291187SBen Hutchings return; 1550d8291187SBen Hutchings 1551d8291187SBen Hutchings efx_mcdi_mode_poll(efx); 1552d8291187SBen Hutchings 1553d8291187SBen Hutchings efx->irq_soft_enabled = false; 1554d8291187SBen Hutchings smp_wmb(); 1555d8291187SBen Hutchings 1556d8291187SBen Hutchings if (efx->legacy_irq) 1557d8291187SBen Hutchings synchronize_irq(efx->legacy_irq); 1558d8291187SBen Hutchings 1559d8291187SBen Hutchings efx_for_each_channel(channel, efx) { 1560d8291187SBen Hutchings if (channel->irq) 1561d8291187SBen Hutchings synchronize_irq(channel->irq); 1562d8291187SBen Hutchings 1563d8291187SBen Hutchings efx_stop_eventq(channel); 1564d8291187SBen Hutchings if (!channel->type->keep_eventq) 1565d8291187SBen Hutchings efx_fini_eventq(channel); 1566d8291187SBen Hutchings } 1567cade715fSBen Hutchings 1568cade715fSBen Hutchings /* Flush the asynchronous MCDI request queue */ 1569cade715fSBen Hutchings efx_mcdi_flush_async(efx); 1570d8291187SBen Hutchings } 1571d8291187SBen Hutchings 1572261e4d96SJon Cooper static int efx_enable_interrupts(struct efx_nic *efx) 15739f2cb71cSBen Hutchings { 1574261e4d96SJon Cooper struct efx_channel *channel, *end_channel; 1575261e4d96SJon Cooper int rc; 15769f2cb71cSBen Hutchings 15778b7325b4SBen Hutchings BUG_ON(efx->state == STATE_DISABLED); 15788b7325b4SBen Hutchings 1579b28405b0SAlexandre Rames if (efx->eeh_disabled_legacy_irq) { 1580b28405b0SAlexandre Rames enable_irq(efx->legacy_irq); 1581b28405b0SAlexandre Rames efx->eeh_disabled_legacy_irq = false; 1582b28405b0SAlexandre Rames } 1583d8291187SBen Hutchings 158486094f7fSBen Hutchings efx->type->irq_enable_master(efx); 15859f2cb71cSBen Hutchings 15869f2cb71cSBen Hutchings efx_for_each_channel(channel, efx) { 1587261e4d96SJon Cooper if (channel->type->keep_eventq) { 1588261e4d96SJon Cooper rc = efx_init_eventq(channel); 1589261e4d96SJon Cooper if (rc) 1590261e4d96SJon Cooper goto fail; 1591261e4d96SJon Cooper } 15929f2cb71cSBen Hutchings } 15939f2cb71cSBen Hutchings 1594261e4d96SJon Cooper rc = efx_soft_enable_interrupts(efx); 1595261e4d96SJon Cooper if (rc) 1596261e4d96SJon Cooper goto fail; 1597261e4d96SJon Cooper 1598261e4d96SJon Cooper return 0; 1599261e4d96SJon Cooper 1600261e4d96SJon Cooper fail: 1601261e4d96SJon Cooper end_channel = channel; 1602261e4d96SJon Cooper efx_for_each_channel(channel, efx) { 1603261e4d96SJon Cooper if (channel == end_channel) 1604261e4d96SJon Cooper break; 1605261e4d96SJon Cooper if (channel->type->keep_eventq) 1606261e4d96SJon Cooper efx_fini_eventq(channel); 1607261e4d96SJon Cooper } 1608261e4d96SJon Cooper 1609261e4d96SJon Cooper efx->type->irq_disable_non_ev(efx); 1610261e4d96SJon Cooper 1611261e4d96SJon Cooper return rc; 16129f2cb71cSBen Hutchings } 16139f2cb71cSBen Hutchings 1614d8291187SBen Hutchings static void efx_disable_interrupts(struct efx_nic *efx) 16159f2cb71cSBen Hutchings { 16169f2cb71cSBen Hutchings struct efx_channel *channel; 16179f2cb71cSBen Hutchings 1618d8291187SBen Hutchings efx_soft_disable_interrupts(efx); 16199f2cb71cSBen Hutchings 16209f2cb71cSBen Hutchings efx_for_each_channel(channel, efx) { 1621d8291187SBen Hutchings if (channel->type->keep_eventq) 16229f2cb71cSBen Hutchings efx_fini_eventq(channel); 16239f2cb71cSBen Hutchings } 1624d8291187SBen Hutchings 162586094f7fSBen Hutchings efx->type->irq_disable_non_ev(efx); 16269f2cb71cSBen Hutchings } 16279f2cb71cSBen Hutchings 1628874aeea5SJeff Kirsher static void efx_remove_interrupts(struct efx_nic *efx) 1629874aeea5SJeff Kirsher { 1630874aeea5SJeff Kirsher struct efx_channel *channel; 1631874aeea5SJeff Kirsher 1632874aeea5SJeff Kirsher /* Remove MSI/MSI-X interrupts */ 1633874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) 1634874aeea5SJeff Kirsher channel->irq = 0; 1635874aeea5SJeff Kirsher pci_disable_msi(efx->pci_dev); 1636874aeea5SJeff Kirsher pci_disable_msix(efx->pci_dev); 1637874aeea5SJeff Kirsher 1638874aeea5SJeff Kirsher /* Remove legacy interrupt */ 1639874aeea5SJeff Kirsher efx->legacy_irq = 0; 1640874aeea5SJeff Kirsher } 1641874aeea5SJeff Kirsher 1642874aeea5SJeff Kirsher static void efx_set_channels(struct efx_nic *efx) 1643874aeea5SJeff Kirsher { 1644874aeea5SJeff Kirsher struct efx_channel *channel; 1645874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 1646874aeea5SJeff Kirsher 1647874aeea5SJeff Kirsher efx->tx_channel_offset = 1648b0fbdae1SShradha Shah efx_separate_tx_channels ? 1649b0fbdae1SShradha Shah efx->n_channels - efx->n_tx_channels : 0; 1650874aeea5SJeff Kirsher 165179d68b37SStuart Hodgson /* We need to mark which channels really have RX and TX 165279d68b37SStuart Hodgson * queues, and adjust the TX queue numbers if we have separate 1653874aeea5SJeff Kirsher * RX-only and TX-only channels. 1654874aeea5SJeff Kirsher */ 1655874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 165679d68b37SStuart Hodgson if (channel->channel < efx->n_rx_channels) 165779d68b37SStuart Hodgson channel->rx_queue.core_index = channel->channel; 165879d68b37SStuart Hodgson else 165979d68b37SStuart Hodgson channel->rx_queue.core_index = -1; 166079d68b37SStuart Hodgson 1661874aeea5SJeff Kirsher efx_for_each_channel_tx_queue(tx_queue, channel) 1662874aeea5SJeff Kirsher tx_queue->queue -= (efx->tx_channel_offset * 1663874aeea5SJeff Kirsher EFX_TXQ_TYPES); 1664874aeea5SJeff Kirsher } 1665874aeea5SJeff Kirsher } 1666874aeea5SJeff Kirsher 1667874aeea5SJeff Kirsher static int efx_probe_nic(struct efx_nic *efx) 1668874aeea5SJeff Kirsher { 1669874aeea5SJeff Kirsher int rc; 1670874aeea5SJeff Kirsher 1671874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, "creating NIC\n"); 1672874aeea5SJeff Kirsher 1673874aeea5SJeff Kirsher /* Carry out hardware-type specific initialisation */ 1674874aeea5SJeff Kirsher rc = efx->type->probe(efx); 1675874aeea5SJeff Kirsher if (rc) 1676874aeea5SJeff Kirsher return rc; 1677874aeea5SJeff Kirsher 1678b0fbdae1SShradha Shah do { 1679b0fbdae1SShradha Shah if (!efx->max_channels || !efx->max_tx_channels) { 1680b0fbdae1SShradha Shah netif_err(efx, drv, efx->net_dev, 1681b0fbdae1SShradha Shah "Insufficient resources to allocate" 1682b0fbdae1SShradha Shah " any channels\n"); 1683b0fbdae1SShradha Shah rc = -ENOSPC; 1684b0fbdae1SShradha Shah goto fail1; 1685b0fbdae1SShradha Shah } 1686b0fbdae1SShradha Shah 1687b0fbdae1SShradha Shah /* Determine the number of channels and queues by trying 1688b0fbdae1SShradha Shah * to hook in MSI-X interrupts. 1689b0fbdae1SShradha Shah */ 1690874aeea5SJeff Kirsher rc = efx_probe_interrupts(efx); 1691874aeea5SJeff Kirsher if (rc) 1692c15eed22SBen Hutchings goto fail1; 1693874aeea5SJeff Kirsher 169452ad762bSDaniel Pieczko efx_set_channels(efx); 169552ad762bSDaniel Pieczko 1696b0fbdae1SShradha Shah /* dimension_resources can fail with EAGAIN */ 1697c15eed22SBen Hutchings rc = efx->type->dimension_resources(efx); 1698b0fbdae1SShradha Shah if (rc != 0 && rc != -EAGAIN) 1699c15eed22SBen Hutchings goto fail2; 170028e47c49SBen Hutchings 1701b0fbdae1SShradha Shah if (rc == -EAGAIN) 1702b0fbdae1SShradha Shah /* try again with new max_channels */ 1703b0fbdae1SShradha Shah efx_remove_interrupts(efx); 1704b0fbdae1SShradha Shah 1705b0fbdae1SShradha Shah } while (rc == -EAGAIN); 1706b0fbdae1SShradha Shah 1707874aeea5SJeff Kirsher if (efx->n_channels > 1) 1708267c0157SJon Cooper netdev_rss_key_fill(&efx->rx_hash_key, 1709267c0157SJon Cooper sizeof(efx->rx_hash_key)); 1710267c0157SJon Cooper efx_set_default_rx_indir_table(efx); 1711874aeea5SJeff Kirsher 1712874aeea5SJeff Kirsher netif_set_real_num_tx_queues(efx->net_dev, efx->n_tx_channels); 1713874aeea5SJeff Kirsher netif_set_real_num_rx_queues(efx->net_dev, efx->n_rx_channels); 1714874aeea5SJeff Kirsher 1715874aeea5SJeff Kirsher /* Initialise the interrupt moderation settings */ 1716539de7c5SBert Kenward efx->irq_mod_step_us = DIV_ROUND_UP(efx->timer_quantum_ns, 1000); 17179e393b30SBen Hutchings efx_init_irq_moderation(efx, tx_irq_mod_usec, rx_irq_mod_usec, true, 17189e393b30SBen Hutchings true); 1719874aeea5SJeff Kirsher 1720874aeea5SJeff Kirsher return 0; 1721874aeea5SJeff Kirsher 1722c15eed22SBen Hutchings fail2: 1723c15eed22SBen Hutchings efx_remove_interrupts(efx); 1724c15eed22SBen Hutchings fail1: 1725874aeea5SJeff Kirsher efx->type->remove(efx); 1726874aeea5SJeff Kirsher return rc; 1727874aeea5SJeff Kirsher } 1728874aeea5SJeff Kirsher 1729874aeea5SJeff Kirsher static void efx_remove_nic(struct efx_nic *efx) 1730874aeea5SJeff Kirsher { 1731874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "destroying NIC\n"); 1732874aeea5SJeff Kirsher 1733874aeea5SJeff Kirsher efx_remove_interrupts(efx); 1734874aeea5SJeff Kirsher efx->type->remove(efx); 1735874aeea5SJeff Kirsher } 1736874aeea5SJeff Kirsher 1737add72477SBen Hutchings static int efx_probe_filters(struct efx_nic *efx) 1738add72477SBen Hutchings { 1739add72477SBen Hutchings int rc; 1740add72477SBen Hutchings 1741add72477SBen Hutchings spin_lock_init(&efx->filter_lock); 17420d322413SEdward Cree init_rwsem(&efx->filter_sem); 1743d248953aSMartin Habets mutex_lock(&efx->mac_lock); 17440d322413SEdward Cree down_write(&efx->filter_sem); 1745add72477SBen Hutchings rc = efx->type->filter_table_probe(efx); 1746add72477SBen Hutchings if (rc) 17470d322413SEdward Cree goto out_unlock; 1748add72477SBen Hutchings 1749add72477SBen Hutchings #ifdef CONFIG_RFS_ACCEL 1750add72477SBen Hutchings if (efx->type->offload_features & NETIF_F_NTUPLE) { 1751faf8dcc1SJon Cooper struct efx_channel *channel; 1752faf8dcc1SJon Cooper int i, success = 1; 1753faf8dcc1SJon Cooper 1754faf8dcc1SJon Cooper efx_for_each_channel(channel, efx) { 1755faf8dcc1SJon Cooper channel->rps_flow_id = 1756faf8dcc1SJon Cooper kcalloc(efx->type->max_rx_ip_filters, 1757faf8dcc1SJon Cooper sizeof(*channel->rps_flow_id), 1758add72477SBen Hutchings GFP_KERNEL); 1759faf8dcc1SJon Cooper if (!channel->rps_flow_id) 1760faf8dcc1SJon Cooper success = 0; 1761faf8dcc1SJon Cooper else 1762faf8dcc1SJon Cooper for (i = 0; 1763faf8dcc1SJon Cooper i < efx->type->max_rx_ip_filters; 1764faf8dcc1SJon Cooper ++i) 1765faf8dcc1SJon Cooper channel->rps_flow_id[i] = 1766faf8dcc1SJon Cooper RPS_FLOW_ID_INVALID; 1767faf8dcc1SJon Cooper } 1768faf8dcc1SJon Cooper 1769faf8dcc1SJon Cooper if (!success) { 1770faf8dcc1SJon Cooper efx_for_each_channel(channel, efx) 1771faf8dcc1SJon Cooper kfree(channel->rps_flow_id); 1772add72477SBen Hutchings efx->type->filter_table_remove(efx); 17730d322413SEdward Cree rc = -ENOMEM; 17740d322413SEdward Cree goto out_unlock; 1775add72477SBen Hutchings } 1776faf8dcc1SJon Cooper 1777faf8dcc1SJon Cooper efx->rps_expire_index = efx->rps_expire_channel = 0; 1778add72477SBen Hutchings } 1779add72477SBen Hutchings #endif 17800d322413SEdward Cree out_unlock: 17810d322413SEdward Cree up_write(&efx->filter_sem); 1782d248953aSMartin Habets mutex_unlock(&efx->mac_lock); 17830d322413SEdward Cree return rc; 1784add72477SBen Hutchings } 1785add72477SBen Hutchings 1786add72477SBen Hutchings static void efx_remove_filters(struct efx_nic *efx) 1787add72477SBen Hutchings { 1788add72477SBen Hutchings #ifdef CONFIG_RFS_ACCEL 1789faf8dcc1SJon Cooper struct efx_channel *channel; 1790faf8dcc1SJon Cooper 1791faf8dcc1SJon Cooper efx_for_each_channel(channel, efx) 1792faf8dcc1SJon Cooper kfree(channel->rps_flow_id); 1793add72477SBen Hutchings #endif 17940d322413SEdward Cree down_write(&efx->filter_sem); 1795add72477SBen Hutchings efx->type->filter_table_remove(efx); 17960d322413SEdward Cree up_write(&efx->filter_sem); 1797add72477SBen Hutchings } 1798add72477SBen Hutchings 1799add72477SBen Hutchings static void efx_restore_filters(struct efx_nic *efx) 1800add72477SBen Hutchings { 18010d322413SEdward Cree down_read(&efx->filter_sem); 1802add72477SBen Hutchings efx->type->filter_table_restore(efx); 18030d322413SEdward Cree up_read(&efx->filter_sem); 1804add72477SBen Hutchings } 1805add72477SBen Hutchings 1806874aeea5SJeff Kirsher /************************************************************************** 1807874aeea5SJeff Kirsher * 1808874aeea5SJeff Kirsher * NIC startup/shutdown 1809874aeea5SJeff Kirsher * 1810874aeea5SJeff Kirsher *************************************************************************/ 1811874aeea5SJeff Kirsher 1812874aeea5SJeff Kirsher static int efx_probe_all(struct efx_nic *efx) 1813874aeea5SJeff Kirsher { 1814874aeea5SJeff Kirsher int rc; 1815874aeea5SJeff Kirsher 1816874aeea5SJeff Kirsher rc = efx_probe_nic(efx); 1817874aeea5SJeff Kirsher if (rc) { 1818874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, "failed to create NIC\n"); 1819874aeea5SJeff Kirsher goto fail1; 1820874aeea5SJeff Kirsher } 1821874aeea5SJeff Kirsher 1822874aeea5SJeff Kirsher rc = efx_probe_port(efx); 1823874aeea5SJeff Kirsher if (rc) { 1824874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, "failed to create port\n"); 1825874aeea5SJeff Kirsher goto fail2; 1826874aeea5SJeff Kirsher } 1827874aeea5SJeff Kirsher 18287e6d06f0SBen Hutchings BUILD_BUG_ON(EFX_DEFAULT_DMAQ_SIZE < EFX_RXQ_MIN_ENT); 18297e6d06f0SBen Hutchings if (WARN_ON(EFX_DEFAULT_DMAQ_SIZE < EFX_TXQ_MIN_ENT(efx))) { 18307e6d06f0SBen Hutchings rc = -EINVAL; 18317e6d06f0SBen Hutchings goto fail3; 18327e6d06f0SBen Hutchings } 1833874aeea5SJeff Kirsher efx->rxq_entries = efx->txq_entries = EFX_DEFAULT_DMAQ_SIZE; 1834874aeea5SJeff Kirsher 18356d8aaaf6SDaniel Pieczko #ifdef CONFIG_SFC_SRIOV 18366d8aaaf6SDaniel Pieczko rc = efx->type->vswitching_probe(efx); 18376d8aaaf6SDaniel Pieczko if (rc) /* not fatal; the PF will still work fine */ 18386d8aaaf6SDaniel Pieczko netif_warn(efx, probe, efx->net_dev, 18396d8aaaf6SDaniel Pieczko "failed to setup vswitching rc=%d;" 18406d8aaaf6SDaniel Pieczko " VFs may not function\n", rc); 18416d8aaaf6SDaniel Pieczko #endif 18426d8aaaf6SDaniel Pieczko 1843874aeea5SJeff Kirsher rc = efx_probe_filters(efx); 1844874aeea5SJeff Kirsher if (rc) { 1845874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1846874aeea5SJeff Kirsher "failed to create filter tables\n"); 18476d8aaaf6SDaniel Pieczko goto fail4; 1848874aeea5SJeff Kirsher } 1849874aeea5SJeff Kirsher 18507f967c01SBen Hutchings rc = efx_probe_channels(efx); 18517f967c01SBen Hutchings if (rc) 18526d8aaaf6SDaniel Pieczko goto fail5; 18537f967c01SBen Hutchings 1854874aeea5SJeff Kirsher return 0; 1855874aeea5SJeff Kirsher 18566d8aaaf6SDaniel Pieczko fail5: 18577f967c01SBen Hutchings efx_remove_filters(efx); 18586d8aaaf6SDaniel Pieczko fail4: 18596d8aaaf6SDaniel Pieczko #ifdef CONFIG_SFC_SRIOV 18606d8aaaf6SDaniel Pieczko efx->type->vswitching_remove(efx); 18616d8aaaf6SDaniel Pieczko #endif 1862874aeea5SJeff Kirsher fail3: 1863874aeea5SJeff Kirsher efx_remove_port(efx); 1864874aeea5SJeff Kirsher fail2: 1865874aeea5SJeff Kirsher efx_remove_nic(efx); 1866874aeea5SJeff Kirsher fail1: 1867874aeea5SJeff Kirsher return rc; 1868874aeea5SJeff Kirsher } 1869874aeea5SJeff Kirsher 18708b7325b4SBen Hutchings /* If the interface is supposed to be running but is not, start 18718b7325b4SBen Hutchings * the hardware and software data path, regular activity for the port 18728b7325b4SBen Hutchings * (MAC statistics, link polling, etc.) and schedule the port to be 18738b7325b4SBen Hutchings * reconfigured. Interrupts must already be enabled. This function 18748b7325b4SBen Hutchings * is safe to call multiple times, so long as the NIC is not disabled. 18758b7325b4SBen Hutchings * Requires the RTNL lock. 18769f2cb71cSBen Hutchings */ 1877874aeea5SJeff Kirsher static void efx_start_all(struct efx_nic *efx) 1878874aeea5SJeff Kirsher { 1879874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 18808b7325b4SBen Hutchings BUG_ON(efx->state == STATE_DISABLED); 1881874aeea5SJeff Kirsher 1882874aeea5SJeff Kirsher /* Check that it is appropriate to restart the interface. All 1883874aeea5SJeff Kirsher * of these flags are safe to read under just the rtnl lock */ 1884e283546cSEdward Cree if (efx->port_enabled || !netif_running(efx->net_dev) || 1885e283546cSEdward Cree efx->reset_pending) 1886874aeea5SJeff Kirsher return; 1887874aeea5SJeff Kirsher 1888874aeea5SJeff Kirsher efx_start_port(efx); 18899f2cb71cSBen Hutchings efx_start_datapath(efx); 1890874aeea5SJeff Kirsher 1891626950dbSAlexandre Rames /* Start the hardware monitor if there is one */ 1892626950dbSAlexandre Rames if (efx->type->monitor != NULL) 1893874aeea5SJeff Kirsher queue_delayed_work(efx->workqueue, &efx->monitor_work, 1894874aeea5SJeff Kirsher efx_monitor_interval); 1895626950dbSAlexandre Rames 18965a6681e2SEdward Cree /* Link state detection is normally event-driven; we have 1897626950dbSAlexandre Rames * to poll now because we could have missed a change 1898626950dbSAlexandre Rames */ 1899874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1900874aeea5SJeff Kirsher if (efx->phy_op->poll(efx)) 1901874aeea5SJeff Kirsher efx_link_status_changed(efx); 1902874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1903874aeea5SJeff Kirsher 1904874aeea5SJeff Kirsher efx->type->start_stats(efx); 1905f8f3b5aeSJon Cooper efx->type->pull_stats(efx); 1906f8f3b5aeSJon Cooper spin_lock_bh(&efx->stats_lock); 1907f8f3b5aeSJon Cooper efx->type->update_stats(efx, NULL, NULL); 1908f8f3b5aeSJon Cooper spin_unlock_bh(&efx->stats_lock); 1909874aeea5SJeff Kirsher } 1910874aeea5SJeff Kirsher 19118b7325b4SBen Hutchings /* Quiesce the hardware and software data path, and regular activity 19128b7325b4SBen Hutchings * for the port without bringing the link down. Safe to call multiple 19138b7325b4SBen Hutchings * times with the NIC in almost any state, but interrupts should be 19148b7325b4SBen Hutchings * enabled. Requires the RTNL lock. 19158b7325b4SBen Hutchings */ 1916874aeea5SJeff Kirsher static void efx_stop_all(struct efx_nic *efx) 1917874aeea5SJeff Kirsher { 1918874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 1919874aeea5SJeff Kirsher 1920874aeea5SJeff Kirsher /* port_enabled can be read safely under the rtnl lock */ 1921874aeea5SJeff Kirsher if (!efx->port_enabled) 1922874aeea5SJeff Kirsher return; 1923874aeea5SJeff Kirsher 1924f8f3b5aeSJon Cooper /* update stats before we go down so we can accurately count 1925f8f3b5aeSJon Cooper * rx_nodesc_drops 1926f8f3b5aeSJon Cooper */ 1927f8f3b5aeSJon Cooper efx->type->pull_stats(efx); 1928f8f3b5aeSJon Cooper spin_lock_bh(&efx->stats_lock); 1929f8f3b5aeSJon Cooper efx->type->update_stats(efx, NULL, NULL); 1930f8f3b5aeSJon Cooper spin_unlock_bh(&efx->stats_lock); 1931874aeea5SJeff Kirsher efx->type->stop_stats(efx); 1932874aeea5SJeff Kirsher efx_stop_port(efx); 1933874aeea5SJeff Kirsher 193429c69a48SBen Hutchings /* Stop the kernel transmit interface. This is only valid if 193529c69a48SBen Hutchings * the device is stopped or detached; otherwise the watchdog 193629c69a48SBen Hutchings * may fire immediately. 193729c69a48SBen Hutchings */ 193829c69a48SBen Hutchings WARN_ON(netif_running(efx->net_dev) && 193929c69a48SBen Hutchings netif_device_present(efx->net_dev)); 19409f2cb71cSBen Hutchings netif_tx_disable(efx->net_dev); 19419f2cb71cSBen Hutchings 19429f2cb71cSBen Hutchings efx_stop_datapath(efx); 1943874aeea5SJeff Kirsher } 1944874aeea5SJeff Kirsher 1945874aeea5SJeff Kirsher static void efx_remove_all(struct efx_nic *efx) 1946874aeea5SJeff Kirsher { 1947874aeea5SJeff Kirsher efx_remove_channels(efx); 19487f967c01SBen Hutchings efx_remove_filters(efx); 19496d8aaaf6SDaniel Pieczko #ifdef CONFIG_SFC_SRIOV 19506d8aaaf6SDaniel Pieczko efx->type->vswitching_remove(efx); 19516d8aaaf6SDaniel Pieczko #endif 1952874aeea5SJeff Kirsher efx_remove_port(efx); 1953874aeea5SJeff Kirsher efx_remove_nic(efx); 1954874aeea5SJeff Kirsher } 1955874aeea5SJeff Kirsher 1956874aeea5SJeff Kirsher /************************************************************************** 1957874aeea5SJeff Kirsher * 1958874aeea5SJeff Kirsher * Interrupt moderation 1959874aeea5SJeff Kirsher * 1960874aeea5SJeff Kirsher **************************************************************************/ 1961539de7c5SBert Kenward unsigned int efx_usecs_to_ticks(struct efx_nic *efx, unsigned int usecs) 1962874aeea5SJeff Kirsher { 1963b548f976SBen Hutchings if (usecs == 0) 1964b548f976SBen Hutchings return 0; 1965539de7c5SBert Kenward if (usecs * 1000 < efx->timer_quantum_ns) 1966874aeea5SJeff Kirsher return 1; /* never round down to 0 */ 1967539de7c5SBert Kenward return usecs * 1000 / efx->timer_quantum_ns; 1968539de7c5SBert Kenward } 1969539de7c5SBert Kenward 1970539de7c5SBert Kenward unsigned int efx_ticks_to_usecs(struct efx_nic *efx, unsigned int ticks) 1971539de7c5SBert Kenward { 1972539de7c5SBert Kenward /* We must round up when converting ticks to microseconds 1973539de7c5SBert Kenward * because we round down when converting the other way. 1974539de7c5SBert Kenward */ 1975539de7c5SBert Kenward return DIV_ROUND_UP(ticks * efx->timer_quantum_ns, 1000); 1976874aeea5SJeff Kirsher } 1977874aeea5SJeff Kirsher 1978874aeea5SJeff Kirsher /* Set interrupt moderation parameters */ 19799e393b30SBen Hutchings int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs, 19809e393b30SBen Hutchings unsigned int rx_usecs, bool rx_adaptive, 19819e393b30SBen Hutchings bool rx_may_override_tx) 1982874aeea5SJeff Kirsher { 1983874aeea5SJeff Kirsher struct efx_channel *channel; 1984d95e329aSBert Kenward unsigned int timer_max_us; 1985d95e329aSBert Kenward 1986874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 1987874aeea5SJeff Kirsher 1988d95e329aSBert Kenward timer_max_us = efx->timer_max_ns / 1000; 1989d95e329aSBert Kenward 1990d95e329aSBert Kenward if (tx_usecs > timer_max_us || rx_usecs > timer_max_us) 19919e393b30SBen Hutchings return -EINVAL; 19929e393b30SBen Hutchings 1993539de7c5SBert Kenward if (tx_usecs != rx_usecs && efx->tx_channel_offset == 0 && 19949e393b30SBen Hutchings !rx_may_override_tx) { 19959e393b30SBen Hutchings netif_err(efx, drv, efx->net_dev, "Channels are shared. " 19969e393b30SBen Hutchings "RX and TX IRQ moderation must be equal\n"); 19979e393b30SBen Hutchings return -EINVAL; 19989e393b30SBen Hutchings } 19999e393b30SBen Hutchings 2000874aeea5SJeff Kirsher efx->irq_rx_adaptive = rx_adaptive; 2001539de7c5SBert Kenward efx->irq_rx_moderation_us = rx_usecs; 2002874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 2003874aeea5SJeff Kirsher if (efx_channel_has_rx_queue(channel)) 2004539de7c5SBert Kenward channel->irq_moderation_us = rx_usecs; 2005874aeea5SJeff Kirsher else if (efx_channel_has_tx_queues(channel)) 2006539de7c5SBert Kenward channel->irq_moderation_us = tx_usecs; 2007874aeea5SJeff Kirsher } 20089e393b30SBen Hutchings 20099e393b30SBen Hutchings return 0; 2010874aeea5SJeff Kirsher } 2011874aeea5SJeff Kirsher 2012a0c4faf5SBen Hutchings void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs, 2013a0c4faf5SBen Hutchings unsigned int *rx_usecs, bool *rx_adaptive) 2014a0c4faf5SBen Hutchings { 2015a0c4faf5SBen Hutchings *rx_adaptive = efx->irq_rx_adaptive; 2016539de7c5SBert Kenward *rx_usecs = efx->irq_rx_moderation_us; 2017a0c4faf5SBen Hutchings 2018a0c4faf5SBen Hutchings /* If channels are shared between RX and TX, so is IRQ 2019a0c4faf5SBen Hutchings * moderation. Otherwise, IRQ moderation is the same for all 2020a0c4faf5SBen Hutchings * TX channels and is not adaptive. 2021a0c4faf5SBen Hutchings */ 2022539de7c5SBert Kenward if (efx->tx_channel_offset == 0) { 2023a0c4faf5SBen Hutchings *tx_usecs = *rx_usecs; 2024539de7c5SBert Kenward } else { 2025539de7c5SBert Kenward struct efx_channel *tx_channel; 2026539de7c5SBert Kenward 2027539de7c5SBert Kenward tx_channel = efx->channel[efx->tx_channel_offset]; 2028539de7c5SBert Kenward *tx_usecs = tx_channel->irq_moderation_us; 2029539de7c5SBert Kenward } 2030a0c4faf5SBen Hutchings } 2031a0c4faf5SBen Hutchings 2032874aeea5SJeff Kirsher /************************************************************************** 2033874aeea5SJeff Kirsher * 2034874aeea5SJeff Kirsher * Hardware monitor 2035874aeea5SJeff Kirsher * 2036874aeea5SJeff Kirsher **************************************************************************/ 2037874aeea5SJeff Kirsher 2038874aeea5SJeff Kirsher /* Run periodically off the general workqueue */ 2039874aeea5SJeff Kirsher static void efx_monitor(struct work_struct *data) 2040874aeea5SJeff Kirsher { 2041874aeea5SJeff Kirsher struct efx_nic *efx = container_of(data, struct efx_nic, 2042874aeea5SJeff Kirsher monitor_work.work); 2043874aeea5SJeff Kirsher 2044874aeea5SJeff Kirsher netif_vdbg(efx, timer, efx->net_dev, 2045874aeea5SJeff Kirsher "hardware monitor executing on CPU %d\n", 2046874aeea5SJeff Kirsher raw_smp_processor_id()); 2047874aeea5SJeff Kirsher BUG_ON(efx->type->monitor == NULL); 2048874aeea5SJeff Kirsher 2049874aeea5SJeff Kirsher /* If the mac_lock is already held then it is likely a port 2050874aeea5SJeff Kirsher * reconfiguration is already in place, which will likely do 2051874aeea5SJeff Kirsher * most of the work of monitor() anyway. */ 2052874aeea5SJeff Kirsher if (mutex_trylock(&efx->mac_lock)) { 2053874aeea5SJeff Kirsher if (efx->port_enabled) 2054874aeea5SJeff Kirsher efx->type->monitor(efx); 2055874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2056874aeea5SJeff Kirsher } 2057874aeea5SJeff Kirsher 2058874aeea5SJeff Kirsher queue_delayed_work(efx->workqueue, &efx->monitor_work, 2059874aeea5SJeff Kirsher efx_monitor_interval); 2060874aeea5SJeff Kirsher } 2061874aeea5SJeff Kirsher 2062874aeea5SJeff Kirsher /************************************************************************** 2063874aeea5SJeff Kirsher * 2064874aeea5SJeff Kirsher * ioctls 2065874aeea5SJeff Kirsher * 2066874aeea5SJeff Kirsher *************************************************************************/ 2067874aeea5SJeff Kirsher 2068874aeea5SJeff Kirsher /* Net device ioctl 2069874aeea5SJeff Kirsher * Context: process, rtnl_lock() held. 2070874aeea5SJeff Kirsher */ 2071874aeea5SJeff Kirsher static int efx_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd) 2072874aeea5SJeff Kirsher { 2073874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2074874aeea5SJeff Kirsher struct mii_ioctl_data *data = if_mii(ifr); 2075874aeea5SJeff Kirsher 20767c236c43SStuart Hodgson if (cmd == SIOCSHWTSTAMP) 2077433dc9b3SBen Hutchings return efx_ptp_set_ts_config(efx, ifr); 2078433dc9b3SBen Hutchings if (cmd == SIOCGHWTSTAMP) 2079433dc9b3SBen Hutchings return efx_ptp_get_ts_config(efx, ifr); 20807c236c43SStuart Hodgson 2081874aeea5SJeff Kirsher /* Convert phy_id from older PRTAD/DEVAD format */ 2082874aeea5SJeff Kirsher if ((cmd == SIOCGMIIREG || cmd == SIOCSMIIREG) && 2083874aeea5SJeff Kirsher (data->phy_id & 0xfc00) == 0x0400) 2084874aeea5SJeff Kirsher data->phy_id ^= MDIO_PHY_ID_C45 | 0x0400; 2085874aeea5SJeff Kirsher 2086874aeea5SJeff Kirsher return mdio_mii_ioctl(&efx->mdio, data, cmd); 2087874aeea5SJeff Kirsher } 2088874aeea5SJeff Kirsher 2089874aeea5SJeff Kirsher /************************************************************************** 2090874aeea5SJeff Kirsher * 2091874aeea5SJeff Kirsher * NAPI interface 2092874aeea5SJeff Kirsher * 2093874aeea5SJeff Kirsher **************************************************************************/ 2094874aeea5SJeff Kirsher 20957f967c01SBen Hutchings static void efx_init_napi_channel(struct efx_channel *channel) 2096874aeea5SJeff Kirsher { 20977f967c01SBen Hutchings struct efx_nic *efx = channel->efx; 2098874aeea5SJeff Kirsher 2099874aeea5SJeff Kirsher channel->napi_dev = efx->net_dev; 2100874aeea5SJeff Kirsher netif_napi_add(channel->napi_dev, &channel->napi_str, 2101874aeea5SJeff Kirsher efx_poll, napi_weight); 2102874aeea5SJeff Kirsher } 21037f967c01SBen Hutchings 21047f967c01SBen Hutchings static void efx_init_napi(struct efx_nic *efx) 21057f967c01SBen Hutchings { 21067f967c01SBen Hutchings struct efx_channel *channel; 21077f967c01SBen Hutchings 21087f967c01SBen Hutchings efx_for_each_channel(channel, efx) 21097f967c01SBen Hutchings efx_init_napi_channel(channel); 2110874aeea5SJeff Kirsher } 2111874aeea5SJeff Kirsher 2112874aeea5SJeff Kirsher static void efx_fini_napi_channel(struct efx_channel *channel) 2113874aeea5SJeff Kirsher { 2114973334a1SEric Dumazet if (channel->napi_dev) 2115874aeea5SJeff Kirsher netif_napi_del(&channel->napi_str); 2116973334a1SEric Dumazet 2117874aeea5SJeff Kirsher channel->napi_dev = NULL; 2118874aeea5SJeff Kirsher } 2119874aeea5SJeff Kirsher 2120874aeea5SJeff Kirsher static void efx_fini_napi(struct efx_nic *efx) 2121874aeea5SJeff Kirsher { 2122874aeea5SJeff Kirsher struct efx_channel *channel; 2123874aeea5SJeff Kirsher 2124874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) 2125874aeea5SJeff Kirsher efx_fini_napi_channel(channel); 2126874aeea5SJeff Kirsher } 2127874aeea5SJeff Kirsher 2128874aeea5SJeff Kirsher /************************************************************************** 2129874aeea5SJeff Kirsher * 2130874aeea5SJeff Kirsher * Kernel netpoll interface 2131874aeea5SJeff Kirsher * 2132874aeea5SJeff Kirsher *************************************************************************/ 2133874aeea5SJeff Kirsher 2134874aeea5SJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 2135874aeea5SJeff Kirsher 2136874aeea5SJeff Kirsher /* Although in the common case interrupts will be disabled, this is not 2137874aeea5SJeff Kirsher * guaranteed. However, all our work happens inside the NAPI callback, 2138874aeea5SJeff Kirsher * so no locking is required. 2139874aeea5SJeff Kirsher */ 2140874aeea5SJeff Kirsher static void efx_netpoll(struct net_device *net_dev) 2141874aeea5SJeff Kirsher { 2142874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2143874aeea5SJeff Kirsher struct efx_channel *channel; 2144874aeea5SJeff Kirsher 2145874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) 2146874aeea5SJeff Kirsher efx_schedule_channel(channel); 2147874aeea5SJeff Kirsher } 2148874aeea5SJeff Kirsher 2149874aeea5SJeff Kirsher #endif 2150874aeea5SJeff Kirsher 2151874aeea5SJeff Kirsher /************************************************************************** 2152874aeea5SJeff Kirsher * 2153874aeea5SJeff Kirsher * Kernel net device interface 2154874aeea5SJeff Kirsher * 2155874aeea5SJeff Kirsher *************************************************************************/ 2156874aeea5SJeff Kirsher 2157874aeea5SJeff Kirsher /* Context: process, rtnl_lock() held. */ 2158e340be92SShradha Shah int efx_net_open(struct net_device *net_dev) 2159874aeea5SJeff Kirsher { 2160874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 21618b7325b4SBen Hutchings int rc; 21628b7325b4SBen Hutchings 2163874aeea5SJeff Kirsher netif_dbg(efx, ifup, efx->net_dev, "opening device on CPU %d\n", 2164874aeea5SJeff Kirsher raw_smp_processor_id()); 2165874aeea5SJeff Kirsher 21668b7325b4SBen Hutchings rc = efx_check_disabled(efx); 21678b7325b4SBen Hutchings if (rc) 21688b7325b4SBen Hutchings return rc; 2169874aeea5SJeff Kirsher if (efx->phy_mode & PHY_MODE_SPECIAL) 2170874aeea5SJeff Kirsher return -EBUSY; 2171874aeea5SJeff Kirsher if (efx_mcdi_poll_reboot(efx) && efx_reset(efx, RESET_TYPE_ALL)) 2172874aeea5SJeff Kirsher return -EIO; 2173874aeea5SJeff Kirsher 2174874aeea5SJeff Kirsher /* Notify the kernel of the link state polled during driver load, 2175874aeea5SJeff Kirsher * before the monitor starts running */ 2176874aeea5SJeff Kirsher efx_link_status_changed(efx); 2177874aeea5SJeff Kirsher 2178874aeea5SJeff Kirsher efx_start_all(efx); 2179dd40781eSBen Hutchings efx_selftest_async_start(efx); 2180874aeea5SJeff Kirsher return 0; 2181874aeea5SJeff Kirsher } 2182874aeea5SJeff Kirsher 2183874aeea5SJeff Kirsher /* Context: process, rtnl_lock() held. 2184874aeea5SJeff Kirsher * Note that the kernel will ignore our return code; this method 2185874aeea5SJeff Kirsher * should really be a void. 2186874aeea5SJeff Kirsher */ 2187e340be92SShradha Shah int efx_net_stop(struct net_device *net_dev) 2188874aeea5SJeff Kirsher { 2189874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2190874aeea5SJeff Kirsher 2191874aeea5SJeff Kirsher netif_dbg(efx, ifdown, efx->net_dev, "closing on CPU %d\n", 2192874aeea5SJeff Kirsher raw_smp_processor_id()); 2193874aeea5SJeff Kirsher 2194874aeea5SJeff Kirsher /* Stop the device and flush all the channels */ 2195874aeea5SJeff Kirsher efx_stop_all(efx); 2196874aeea5SJeff Kirsher 2197874aeea5SJeff Kirsher return 0; 2198874aeea5SJeff Kirsher } 2199874aeea5SJeff Kirsher 2200874aeea5SJeff Kirsher /* Context: process, dev_base_lock or RTNL held, non-blocking. */ 2201bc1f4470Sstephen hemminger static void efx_net_stats(struct net_device *net_dev, 22022aa9ef11SBen Hutchings struct rtnl_link_stats64 *stats) 2203874aeea5SJeff Kirsher { 2204874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2205874aeea5SJeff Kirsher 2206874aeea5SJeff Kirsher spin_lock_bh(&efx->stats_lock); 2207cd0ecc9aSBen Hutchings efx->type->update_stats(efx, NULL, stats); 22081cb34522SBen Hutchings spin_unlock_bh(&efx->stats_lock); 2209874aeea5SJeff Kirsher } 2210874aeea5SJeff Kirsher 2211874aeea5SJeff Kirsher /* Context: netif_tx_lock held, BHs disabled. */ 2212874aeea5SJeff Kirsher static void efx_watchdog(struct net_device *net_dev) 2213874aeea5SJeff Kirsher { 2214874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2215874aeea5SJeff Kirsher 2216874aeea5SJeff Kirsher netif_err(efx, tx_err, efx->net_dev, 2217874aeea5SJeff Kirsher "TX stuck with port_enabled=%d: resetting channels\n", 2218874aeea5SJeff Kirsher efx->port_enabled); 2219874aeea5SJeff Kirsher 2220874aeea5SJeff Kirsher efx_schedule_reset(efx, RESET_TYPE_TX_WATCHDOG); 2221874aeea5SJeff Kirsher } 2222874aeea5SJeff Kirsher 2223874aeea5SJeff Kirsher 2224874aeea5SJeff Kirsher /* Context: process, rtnl_lock() held. */ 2225874aeea5SJeff Kirsher static int efx_change_mtu(struct net_device *net_dev, int new_mtu) 2226874aeea5SJeff Kirsher { 2227874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 22288b7325b4SBen Hutchings int rc; 2229874aeea5SJeff Kirsher 22308b7325b4SBen Hutchings rc = efx_check_disabled(efx); 22318b7325b4SBen Hutchings if (rc) 22328b7325b4SBen Hutchings return rc; 2233874aeea5SJeff Kirsher 2234874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "changing MTU to %d\n", new_mtu); 2235874aeea5SJeff Kirsher 223629c69a48SBen Hutchings efx_device_detach_sync(efx); 223729c69a48SBen Hutchings efx_stop_all(efx); 223829c69a48SBen Hutchings 2239874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 2240874aeea5SJeff Kirsher net_dev->mtu = new_mtu; 22410d322413SEdward Cree efx_mac_reconfigure(efx); 2242874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2243874aeea5SJeff Kirsher 2244874aeea5SJeff Kirsher efx_start_all(efx); 224529c69a48SBen Hutchings netif_device_attach(efx->net_dev); 22466c8eef4aSBen Hutchings return 0; 2247874aeea5SJeff Kirsher } 2248874aeea5SJeff Kirsher 2249874aeea5SJeff Kirsher static int efx_set_mac_address(struct net_device *net_dev, void *data) 2250874aeea5SJeff Kirsher { 2251874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2252874aeea5SJeff Kirsher struct sockaddr *addr = data; 2253e0b3ae30SBen Hutchings u8 *new_addr = addr->sa_data; 2254cfc77c2fSShradha Shah u8 old_addr[6]; 2255cfc77c2fSShradha Shah int rc; 2256874aeea5SJeff Kirsher 2257874aeea5SJeff Kirsher if (!is_valid_ether_addr(new_addr)) { 2258874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 2259874aeea5SJeff Kirsher "invalid ethernet MAC address requested: %pM\n", 2260874aeea5SJeff Kirsher new_addr); 2261504f9b5aSDanny Kukawka return -EADDRNOTAVAIL; 2262874aeea5SJeff Kirsher } 2263874aeea5SJeff Kirsher 2264cfc77c2fSShradha Shah /* save old address */ 2265cfc77c2fSShradha Shah ether_addr_copy(old_addr, net_dev->dev_addr); 2266cd84ff4dSEdward Cree ether_addr_copy(net_dev->dev_addr, new_addr); 2267910c8789SShradha Shah if (efx->type->set_mac_address) { 2268910c8789SShradha Shah rc = efx->type->set_mac_address(efx); 2269cfc77c2fSShradha Shah if (rc) { 2270cfc77c2fSShradha Shah ether_addr_copy(net_dev->dev_addr, old_addr); 2271cfc77c2fSShradha Shah return rc; 2272cfc77c2fSShradha Shah } 2273cfc77c2fSShradha Shah } 2274874aeea5SJeff Kirsher 2275874aeea5SJeff Kirsher /* Reconfigure the MAC */ 2276874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 22770d322413SEdward Cree efx_mac_reconfigure(efx); 2278874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2279874aeea5SJeff Kirsher 2280874aeea5SJeff Kirsher return 0; 2281874aeea5SJeff Kirsher } 2282874aeea5SJeff Kirsher 2283874aeea5SJeff Kirsher /* Context: netif_addr_lock held, BHs disabled. */ 22840fca8c97SBen Hutchings static void efx_set_rx_mode(struct net_device *net_dev) 2285874aeea5SJeff Kirsher { 2286874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2287874aeea5SJeff Kirsher 2288874aeea5SJeff Kirsher if (efx->port_enabled) 2289874aeea5SJeff Kirsher queue_work(efx->workqueue, &efx->mac_work); 2290874aeea5SJeff Kirsher /* Otherwise efx_start_port() will do this */ 2291874aeea5SJeff Kirsher } 2292874aeea5SJeff Kirsher 2293c8f44affSMichał Mirosław static int efx_set_features(struct net_device *net_dev, netdev_features_t data) 2294874aeea5SJeff Kirsher { 2295874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 22964a53ea8aSAndrew Rybchenko int rc; 2297874aeea5SJeff Kirsher 2298874aeea5SJeff Kirsher /* If disabling RX n-tuple filtering, clear existing filters */ 22994a53ea8aSAndrew Rybchenko if (net_dev->features & ~data & NETIF_F_NTUPLE) { 23004a53ea8aSAndrew Rybchenko rc = efx->type->filter_clear_rx(efx, EFX_FILTER_PRI_MANUAL); 23014a53ea8aSAndrew Rybchenko if (rc) 23024a53ea8aSAndrew Rybchenko return rc; 23034a53ea8aSAndrew Rybchenko } 23044a53ea8aSAndrew Rybchenko 23054a53ea8aSAndrew Rybchenko /* If Rx VLAN filter is changed, update filters via mac_reconfigure */ 23064a53ea8aSAndrew Rybchenko if ((net_dev->features ^ data) & NETIF_F_HW_VLAN_CTAG_FILTER) { 23074a53ea8aSAndrew Rybchenko /* efx_set_rx_mode() will schedule MAC work to update filters 23084a53ea8aSAndrew Rybchenko * when a new features are finally set in net_dev. 23094a53ea8aSAndrew Rybchenko */ 23104a53ea8aSAndrew Rybchenko efx_set_rx_mode(net_dev); 23114a53ea8aSAndrew Rybchenko } 2312874aeea5SJeff Kirsher 2313874aeea5SJeff Kirsher return 0; 2314874aeea5SJeff Kirsher } 2315874aeea5SJeff Kirsher 2316b40296fcSWei Yongjun static int efx_get_phys_port_id(struct net_device *net_dev, 231708a7b29bSBert Kenward struct netdev_phys_item_id *ppid) 231808a7b29bSBert Kenward { 231908a7b29bSBert Kenward struct efx_nic *efx = netdev_priv(net_dev); 232008a7b29bSBert Kenward 232108a7b29bSBert Kenward if (efx->type->get_phys_port_id) 232208a7b29bSBert Kenward return efx->type->get_phys_port_id(efx, ppid); 232308a7b29bSBert Kenward else 232408a7b29bSBert Kenward return -EOPNOTSUPP; 232508a7b29bSBert Kenward } 232608a7b29bSBert Kenward 2327ac019f08SBert Kenward static int efx_get_phys_port_name(struct net_device *net_dev, 2328ac019f08SBert Kenward char *name, size_t len) 2329ac019f08SBert Kenward { 2330ac019f08SBert Kenward struct efx_nic *efx = netdev_priv(net_dev); 2331ac019f08SBert Kenward 2332ac019f08SBert Kenward if (snprintf(name, len, "p%u", efx->port_num) >= len) 2333ac019f08SBert Kenward return -EINVAL; 2334ac019f08SBert Kenward return 0; 2335ac019f08SBert Kenward } 2336ac019f08SBert Kenward 23374a53ea8aSAndrew Rybchenko static int efx_vlan_rx_add_vid(struct net_device *net_dev, __be16 proto, u16 vid) 23384a53ea8aSAndrew Rybchenko { 23394a53ea8aSAndrew Rybchenko struct efx_nic *efx = netdev_priv(net_dev); 23404a53ea8aSAndrew Rybchenko 23414a53ea8aSAndrew Rybchenko if (efx->type->vlan_rx_add_vid) 23424a53ea8aSAndrew Rybchenko return efx->type->vlan_rx_add_vid(efx, proto, vid); 23434a53ea8aSAndrew Rybchenko else 23444a53ea8aSAndrew Rybchenko return -EOPNOTSUPP; 23454a53ea8aSAndrew Rybchenko } 23464a53ea8aSAndrew Rybchenko 23474a53ea8aSAndrew Rybchenko static int efx_vlan_rx_kill_vid(struct net_device *net_dev, __be16 proto, u16 vid) 23484a53ea8aSAndrew Rybchenko { 23494a53ea8aSAndrew Rybchenko struct efx_nic *efx = netdev_priv(net_dev); 23504a53ea8aSAndrew Rybchenko 23514a53ea8aSAndrew Rybchenko if (efx->type->vlan_rx_kill_vid) 23524a53ea8aSAndrew Rybchenko return efx->type->vlan_rx_kill_vid(efx, proto, vid); 23534a53ea8aSAndrew Rybchenko else 23544a53ea8aSAndrew Rybchenko return -EOPNOTSUPP; 23554a53ea8aSAndrew Rybchenko } 23564a53ea8aSAndrew Rybchenko 2357e5fbd977SJon Cooper static int efx_udp_tunnel_type_map(enum udp_parsable_tunnel_type in) 2358e5fbd977SJon Cooper { 2359e5fbd977SJon Cooper switch (in) { 2360e5fbd977SJon Cooper case UDP_TUNNEL_TYPE_VXLAN: 2361e5fbd977SJon Cooper return TUNNEL_ENCAP_UDP_PORT_ENTRY_VXLAN; 2362e5fbd977SJon Cooper case UDP_TUNNEL_TYPE_GENEVE: 2363e5fbd977SJon Cooper return TUNNEL_ENCAP_UDP_PORT_ENTRY_GENEVE; 2364e5fbd977SJon Cooper default: 2365e5fbd977SJon Cooper return -1; 2366e5fbd977SJon Cooper } 2367e5fbd977SJon Cooper } 2368e5fbd977SJon Cooper 2369e5fbd977SJon Cooper static void efx_udp_tunnel_add(struct net_device *dev, struct udp_tunnel_info *ti) 2370e5fbd977SJon Cooper { 2371e5fbd977SJon Cooper struct efx_nic *efx = netdev_priv(dev); 2372e5fbd977SJon Cooper struct efx_udp_tunnel tnl; 2373e5fbd977SJon Cooper int efx_tunnel_type; 2374e5fbd977SJon Cooper 2375e5fbd977SJon Cooper efx_tunnel_type = efx_udp_tunnel_type_map(ti->type); 2376e5fbd977SJon Cooper if (efx_tunnel_type < 0) 2377e5fbd977SJon Cooper return; 2378e5fbd977SJon Cooper 2379e5fbd977SJon Cooper tnl.type = (u16)efx_tunnel_type; 2380e5fbd977SJon Cooper tnl.port = ti->port; 2381e5fbd977SJon Cooper 2382e5fbd977SJon Cooper if (efx->type->udp_tnl_add_port) 2383e5fbd977SJon Cooper (void)efx->type->udp_tnl_add_port(efx, tnl); 2384e5fbd977SJon Cooper } 2385e5fbd977SJon Cooper 2386e5fbd977SJon Cooper static void efx_udp_tunnel_del(struct net_device *dev, struct udp_tunnel_info *ti) 2387e5fbd977SJon Cooper { 2388e5fbd977SJon Cooper struct efx_nic *efx = netdev_priv(dev); 2389e5fbd977SJon Cooper struct efx_udp_tunnel tnl; 2390e5fbd977SJon Cooper int efx_tunnel_type; 2391e5fbd977SJon Cooper 2392e5fbd977SJon Cooper efx_tunnel_type = efx_udp_tunnel_type_map(ti->type); 2393e5fbd977SJon Cooper if (efx_tunnel_type < 0) 2394e5fbd977SJon Cooper return; 2395e5fbd977SJon Cooper 2396e5fbd977SJon Cooper tnl.type = (u16)efx_tunnel_type; 2397e5fbd977SJon Cooper tnl.port = ti->port; 2398e5fbd977SJon Cooper 2399e5fbd977SJon Cooper if (efx->type->udp_tnl_add_port) 2400e5fbd977SJon Cooper (void)efx->type->udp_tnl_del_port(efx, tnl); 2401e5fbd977SJon Cooper } 2402e5fbd977SJon Cooper 24037fa8d547SShradha Shah static const struct net_device_ops efx_netdev_ops = { 2404874aeea5SJeff Kirsher .ndo_open = efx_net_open, 2405874aeea5SJeff Kirsher .ndo_stop = efx_net_stop, 2406874aeea5SJeff Kirsher .ndo_get_stats64 = efx_net_stats, 2407874aeea5SJeff Kirsher .ndo_tx_timeout = efx_watchdog, 2408874aeea5SJeff Kirsher .ndo_start_xmit = efx_hard_start_xmit, 2409874aeea5SJeff Kirsher .ndo_validate_addr = eth_validate_addr, 2410874aeea5SJeff Kirsher .ndo_do_ioctl = efx_ioctl, 2411874aeea5SJeff Kirsher .ndo_change_mtu = efx_change_mtu, 2412874aeea5SJeff Kirsher .ndo_set_mac_address = efx_set_mac_address, 24130fca8c97SBen Hutchings .ndo_set_rx_mode = efx_set_rx_mode, 2414874aeea5SJeff Kirsher .ndo_set_features = efx_set_features, 24154a53ea8aSAndrew Rybchenko .ndo_vlan_rx_add_vid = efx_vlan_rx_add_vid, 24164a53ea8aSAndrew Rybchenko .ndo_vlan_rx_kill_vid = efx_vlan_rx_kill_vid, 2417cd2d5b52SBen Hutchings #ifdef CONFIG_SFC_SRIOV 24187fa8d547SShradha Shah .ndo_set_vf_mac = efx_sriov_set_vf_mac, 24197fa8d547SShradha Shah .ndo_set_vf_vlan = efx_sriov_set_vf_vlan, 24207fa8d547SShradha Shah .ndo_set_vf_spoofchk = efx_sriov_set_vf_spoofchk, 24217fa8d547SShradha Shah .ndo_get_vf_config = efx_sriov_get_vf_config, 24224392dc69SEdward Cree .ndo_set_vf_link_state = efx_sriov_set_vf_link_state, 2423cd2d5b52SBen Hutchings #endif 242408a7b29bSBert Kenward .ndo_get_phys_port_id = efx_get_phys_port_id, 2425ac019f08SBert Kenward .ndo_get_phys_port_name = efx_get_phys_port_name, 2426874aeea5SJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 2427874aeea5SJeff Kirsher .ndo_poll_controller = efx_netpoll, 2428874aeea5SJeff Kirsher #endif 2429874aeea5SJeff Kirsher .ndo_setup_tc = efx_setup_tc, 2430874aeea5SJeff Kirsher #ifdef CONFIG_RFS_ACCEL 2431874aeea5SJeff Kirsher .ndo_rx_flow_steer = efx_filter_rfs, 2432874aeea5SJeff Kirsher #endif 2433e5fbd977SJon Cooper .ndo_udp_tunnel_add = efx_udp_tunnel_add, 2434e5fbd977SJon Cooper .ndo_udp_tunnel_del = efx_udp_tunnel_del, 2435874aeea5SJeff Kirsher }; 2436874aeea5SJeff Kirsher 2437874aeea5SJeff Kirsher static void efx_update_name(struct efx_nic *efx) 2438874aeea5SJeff Kirsher { 2439874aeea5SJeff Kirsher strcpy(efx->name, efx->net_dev->name); 2440874aeea5SJeff Kirsher efx_mtd_rename(efx); 2441874aeea5SJeff Kirsher efx_set_channel_names(efx); 2442874aeea5SJeff Kirsher } 2443874aeea5SJeff Kirsher 2444874aeea5SJeff Kirsher static int efx_netdev_event(struct notifier_block *this, 2445874aeea5SJeff Kirsher unsigned long event, void *ptr) 2446874aeea5SJeff Kirsher { 2447351638e7SJiri Pirko struct net_device *net_dev = netdev_notifier_info_to_dev(ptr); 2448874aeea5SJeff Kirsher 24497fa8d547SShradha Shah if ((net_dev->netdev_ops == &efx_netdev_ops) && 2450874aeea5SJeff Kirsher event == NETDEV_CHANGENAME) 2451874aeea5SJeff Kirsher efx_update_name(netdev_priv(net_dev)); 2452874aeea5SJeff Kirsher 2453874aeea5SJeff Kirsher return NOTIFY_DONE; 2454874aeea5SJeff Kirsher } 2455874aeea5SJeff Kirsher 2456874aeea5SJeff Kirsher static struct notifier_block efx_netdev_notifier = { 2457874aeea5SJeff Kirsher .notifier_call = efx_netdev_event, 2458874aeea5SJeff Kirsher }; 2459874aeea5SJeff Kirsher 2460874aeea5SJeff Kirsher static ssize_t 2461874aeea5SJeff Kirsher show_phy_type(struct device *dev, struct device_attribute *attr, char *buf) 2462874aeea5SJeff Kirsher { 2463874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 2464874aeea5SJeff Kirsher return sprintf(buf, "%d\n", efx->phy_type); 2465874aeea5SJeff Kirsher } 2466776fbcc9SBen Hutchings static DEVICE_ATTR(phy_type, 0444, show_phy_type, NULL); 2467874aeea5SJeff Kirsher 2468e7fef9b4SEdward Cree #ifdef CONFIG_SFC_MCDI_LOGGING 2469e7fef9b4SEdward Cree static ssize_t show_mcdi_log(struct device *dev, struct device_attribute *attr, 2470e7fef9b4SEdward Cree char *buf) 2471e7fef9b4SEdward Cree { 2472e7fef9b4SEdward Cree struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 2473e7fef9b4SEdward Cree struct efx_mcdi_iface *mcdi = efx_mcdi(efx); 2474e7fef9b4SEdward Cree 2475e7fef9b4SEdward Cree return scnprintf(buf, PAGE_SIZE, "%d\n", mcdi->logging_enabled); 2476e7fef9b4SEdward Cree } 2477e7fef9b4SEdward Cree static ssize_t set_mcdi_log(struct device *dev, struct device_attribute *attr, 2478e7fef9b4SEdward Cree const char *buf, size_t count) 2479e7fef9b4SEdward Cree { 2480e7fef9b4SEdward Cree struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 2481e7fef9b4SEdward Cree struct efx_mcdi_iface *mcdi = efx_mcdi(efx); 2482e7fef9b4SEdward Cree bool enable = count > 0 && *buf != '0'; 2483e7fef9b4SEdward Cree 2484e7fef9b4SEdward Cree mcdi->logging_enabled = enable; 2485e7fef9b4SEdward Cree return count; 2486e7fef9b4SEdward Cree } 2487e7fef9b4SEdward Cree static DEVICE_ATTR(mcdi_logging, 0644, show_mcdi_log, set_mcdi_log); 2488e7fef9b4SEdward Cree #endif 2489e7fef9b4SEdward Cree 2490874aeea5SJeff Kirsher static int efx_register_netdev(struct efx_nic *efx) 2491874aeea5SJeff Kirsher { 2492874aeea5SJeff Kirsher struct net_device *net_dev = efx->net_dev; 2493874aeea5SJeff Kirsher struct efx_channel *channel; 2494874aeea5SJeff Kirsher int rc; 2495874aeea5SJeff Kirsher 2496874aeea5SJeff Kirsher net_dev->watchdog_timeo = 5 * HZ; 2497874aeea5SJeff Kirsher net_dev->irq = efx->pci_dev->irq; 24987fa8d547SShradha Shah net_dev->netdev_ops = &efx_netdev_ops; 24997fa8d547SShradha Shah if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) 25008127d661SBen Hutchings net_dev->priv_flags |= IFF_UNICAST_FLT; 25017ad24ea4SWilfried Klaebe net_dev->ethtool_ops = &efx_ethtool_ops; 25027e6d06f0SBen Hutchings net_dev->gso_max_segs = EFX_TSO_MAX_SEGS; 2503cd94e519SBert Kenward net_dev->min_mtu = EFX_MIN_MTU; 2504cd94e519SBert Kenward net_dev->max_mtu = EFX_MAX_MTU; 2505874aeea5SJeff Kirsher 2506874aeea5SJeff Kirsher rtnl_lock(); 2507874aeea5SJeff Kirsher 25087153f623SBen Hutchings /* Enable resets to be scheduled and check whether any were 25097153f623SBen Hutchings * already requested. If so, the NIC is probably hosed so we 25107153f623SBen Hutchings * abort. 25117153f623SBen Hutchings */ 25127153f623SBen Hutchings efx->state = STATE_READY; 25137153f623SBen Hutchings smp_mb(); /* ensure we change state before checking reset_pending */ 25147153f623SBen Hutchings if (efx->reset_pending) { 25157153f623SBen Hutchings netif_err(efx, probe, efx->net_dev, 25167153f623SBen Hutchings "aborting probe due to scheduled reset\n"); 25177153f623SBen Hutchings rc = -EIO; 25187153f623SBen Hutchings goto fail_locked; 25197153f623SBen Hutchings } 25207153f623SBen Hutchings 2521874aeea5SJeff Kirsher rc = dev_alloc_name(net_dev, net_dev->name); 2522874aeea5SJeff Kirsher if (rc < 0) 2523874aeea5SJeff Kirsher goto fail_locked; 2524874aeea5SJeff Kirsher efx_update_name(efx); 2525874aeea5SJeff Kirsher 25268f8b3d51SBen Hutchings /* Always start with carrier off; PHY events will detect the link */ 25278f8b3d51SBen Hutchings netif_carrier_off(net_dev); 25288f8b3d51SBen Hutchings 2529874aeea5SJeff Kirsher rc = register_netdevice(net_dev); 2530874aeea5SJeff Kirsher if (rc) 2531874aeea5SJeff Kirsher goto fail_locked; 2532874aeea5SJeff Kirsher 2533874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 2534874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 2535874aeea5SJeff Kirsher efx_for_each_channel_tx_queue(tx_queue, channel) 2536874aeea5SJeff Kirsher efx_init_tx_queue_core_txq(tx_queue); 2537874aeea5SJeff Kirsher } 2538874aeea5SJeff Kirsher 25390bcf4a64SBen Hutchings efx_associate(efx); 25400bcf4a64SBen Hutchings 2541874aeea5SJeff Kirsher rtnl_unlock(); 2542874aeea5SJeff Kirsher 2543874aeea5SJeff Kirsher rc = device_create_file(&efx->pci_dev->dev, &dev_attr_phy_type); 2544874aeea5SJeff Kirsher if (rc) { 2545874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 2546874aeea5SJeff Kirsher "failed to init net dev attributes\n"); 2547874aeea5SJeff Kirsher goto fail_registered; 2548874aeea5SJeff Kirsher } 2549e7fef9b4SEdward Cree #ifdef CONFIG_SFC_MCDI_LOGGING 2550e7fef9b4SEdward Cree rc = device_create_file(&efx->pci_dev->dev, &dev_attr_mcdi_logging); 2551e7fef9b4SEdward Cree if (rc) { 2552e7fef9b4SEdward Cree netif_err(efx, drv, efx->net_dev, 2553e7fef9b4SEdward Cree "failed to init net dev attributes\n"); 2554e7fef9b4SEdward Cree goto fail_attr_mcdi_logging; 2555e7fef9b4SEdward Cree } 2556e7fef9b4SEdward Cree #endif 2557874aeea5SJeff Kirsher 2558874aeea5SJeff Kirsher return 0; 2559874aeea5SJeff Kirsher 2560e7fef9b4SEdward Cree #ifdef CONFIG_SFC_MCDI_LOGGING 2561e7fef9b4SEdward Cree fail_attr_mcdi_logging: 2562e7fef9b4SEdward Cree device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_type); 2563e7fef9b4SEdward Cree #endif 25647153f623SBen Hutchings fail_registered: 25657153f623SBen Hutchings rtnl_lock(); 25660bcf4a64SBen Hutchings efx_dissociate(efx); 25677153f623SBen Hutchings unregister_netdevice(net_dev); 2568874aeea5SJeff Kirsher fail_locked: 25697153f623SBen Hutchings efx->state = STATE_UNINIT; 2570874aeea5SJeff Kirsher rtnl_unlock(); 2571874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, "could not register net dev\n"); 2572874aeea5SJeff Kirsher return rc; 2573874aeea5SJeff Kirsher } 2574874aeea5SJeff Kirsher 2575874aeea5SJeff Kirsher static void efx_unregister_netdev(struct efx_nic *efx) 2576874aeea5SJeff Kirsher { 2577874aeea5SJeff Kirsher if (!efx->net_dev) 2578874aeea5SJeff Kirsher return; 2579874aeea5SJeff Kirsher 2580874aeea5SJeff Kirsher BUG_ON(netdev_priv(efx->net_dev) != efx); 2581874aeea5SJeff Kirsher 2582e7fef9b4SEdward Cree if (efx_dev_registered(efx)) { 2583874aeea5SJeff Kirsher strlcpy(efx->name, pci_name(efx->pci_dev), sizeof(efx->name)); 2584e7fef9b4SEdward Cree #ifdef CONFIG_SFC_MCDI_LOGGING 2585e7fef9b4SEdward Cree device_remove_file(&efx->pci_dev->dev, &dev_attr_mcdi_logging); 2586e7fef9b4SEdward Cree #endif 2587874aeea5SJeff Kirsher device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_type); 2588e7fef9b4SEdward Cree unregister_netdev(efx->net_dev); 2589e7fef9b4SEdward Cree } 2590874aeea5SJeff Kirsher } 2591874aeea5SJeff Kirsher 2592874aeea5SJeff Kirsher /************************************************************************** 2593874aeea5SJeff Kirsher * 2594874aeea5SJeff Kirsher * Device reset and suspend 2595874aeea5SJeff Kirsher * 2596874aeea5SJeff Kirsher **************************************************************************/ 2597874aeea5SJeff Kirsher 2598874aeea5SJeff Kirsher /* Tears down the entire software state and most of the hardware state 2599874aeea5SJeff Kirsher * before reset. */ 2600874aeea5SJeff Kirsher void efx_reset_down(struct efx_nic *efx, enum reset_type method) 2601874aeea5SJeff Kirsher { 2602874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 2603874aeea5SJeff Kirsher 2604e283546cSEdward Cree if (method == RESET_TYPE_MCDI_TIMEOUT) 2605e283546cSEdward Cree efx->type->prepare_flr(efx); 2606e283546cSEdward Cree 2607874aeea5SJeff Kirsher efx_stop_all(efx); 2608d8291187SBen Hutchings efx_disable_interrupts(efx); 26095642ceefSBen Hutchings 26105642ceefSBen Hutchings mutex_lock(&efx->mac_lock); 2611087e9025SJon Cooper if (efx->port_initialized && method != RESET_TYPE_INVISIBLE && 2612087e9025SJon Cooper method != RESET_TYPE_DATAPATH) 2613874aeea5SJeff Kirsher efx->phy_op->fini(efx); 2614874aeea5SJeff Kirsher efx->type->fini(efx); 2615874aeea5SJeff Kirsher } 2616874aeea5SJeff Kirsher 2617874aeea5SJeff Kirsher /* This function will always ensure that the locks acquired in 2618874aeea5SJeff Kirsher * efx_reset_down() are released. A failure return code indicates 2619874aeea5SJeff Kirsher * that we were unable to reinitialise the hardware, and the 2620874aeea5SJeff Kirsher * driver should be disabled. If ok is false, then the rx and tx 2621874aeea5SJeff Kirsher * engines are not restarted, pending a RESET_DISABLE. */ 2622874aeea5SJeff Kirsher int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok) 2623874aeea5SJeff Kirsher { 2624874aeea5SJeff Kirsher int rc; 2625874aeea5SJeff Kirsher 2626874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 2627874aeea5SJeff Kirsher 2628e283546cSEdward Cree if (method == RESET_TYPE_MCDI_TIMEOUT) 2629e283546cSEdward Cree efx->type->finish_flr(efx); 2630e283546cSEdward Cree 2631e283546cSEdward Cree /* Ensure that SRAM is initialised even if we're disabling the device */ 2632874aeea5SJeff Kirsher rc = efx->type->init(efx); 2633874aeea5SJeff Kirsher if (rc) { 2634874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, "failed to initialise NIC\n"); 2635874aeea5SJeff Kirsher goto fail; 2636874aeea5SJeff Kirsher } 2637874aeea5SJeff Kirsher 2638874aeea5SJeff Kirsher if (!ok) 2639874aeea5SJeff Kirsher goto fail; 2640874aeea5SJeff Kirsher 2641087e9025SJon Cooper if (efx->port_initialized && method != RESET_TYPE_INVISIBLE && 2642087e9025SJon Cooper method != RESET_TYPE_DATAPATH) { 2643874aeea5SJeff Kirsher rc = efx->phy_op->init(efx); 2644874aeea5SJeff Kirsher if (rc) 2645874aeea5SJeff Kirsher goto fail; 2646267d9d73SEdward Cree rc = efx->phy_op->reconfigure(efx); 2647267d9d73SEdward Cree if (rc && rc != -EPERM) 2648874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 2649874aeea5SJeff Kirsher "could not restore PHY settings\n"); 2650874aeea5SJeff Kirsher } 2651874aeea5SJeff Kirsher 2652261e4d96SJon Cooper rc = efx_enable_interrupts(efx); 2653261e4d96SJon Cooper if (rc) 2654261e4d96SJon Cooper goto fail; 26556d8aaaf6SDaniel Pieczko 26566d8aaaf6SDaniel Pieczko #ifdef CONFIG_SFC_SRIOV 26576d8aaaf6SDaniel Pieczko rc = efx->type->vswitching_restore(efx); 26586d8aaaf6SDaniel Pieczko if (rc) /* not fatal; the PF will still work fine */ 26596d8aaaf6SDaniel Pieczko netif_warn(efx, probe, efx->net_dev, 26606d8aaaf6SDaniel Pieczko "failed to restore vswitching rc=%d;" 26616d8aaaf6SDaniel Pieczko " VFs may not function\n", rc); 26626d8aaaf6SDaniel Pieczko #endif 26636d8aaaf6SDaniel Pieczko 26640d322413SEdward Cree down_read(&efx->filter_sem); 2665874aeea5SJeff Kirsher efx_restore_filters(efx); 26660d322413SEdward Cree up_read(&efx->filter_sem); 26677fa8d547SShradha Shah if (efx->type->sriov_reset) 2668d98a4ffeSShradha Shah efx->type->sriov_reset(efx); 2669874aeea5SJeff Kirsher 2670874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2671874aeea5SJeff Kirsher 2672874aeea5SJeff Kirsher efx_start_all(efx); 2673874aeea5SJeff Kirsher 2674e5fbd977SJon Cooper if (efx->type->udp_tnl_push_ports) 2675e5fbd977SJon Cooper efx->type->udp_tnl_push_ports(efx); 2676e5fbd977SJon Cooper 2677874aeea5SJeff Kirsher return 0; 2678874aeea5SJeff Kirsher 2679874aeea5SJeff Kirsher fail: 2680874aeea5SJeff Kirsher efx->port_initialized = false; 2681874aeea5SJeff Kirsher 2682874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2683874aeea5SJeff Kirsher 2684874aeea5SJeff Kirsher return rc; 2685874aeea5SJeff Kirsher } 2686874aeea5SJeff Kirsher 2687874aeea5SJeff Kirsher /* Reset the NIC using the specified method. Note that the reset may 2688874aeea5SJeff Kirsher * fail, in which case the card will be left in an unusable state. 2689874aeea5SJeff Kirsher * 2690874aeea5SJeff Kirsher * Caller must hold the rtnl_lock. 2691874aeea5SJeff Kirsher */ 2692874aeea5SJeff Kirsher int efx_reset(struct efx_nic *efx, enum reset_type method) 2693874aeea5SJeff Kirsher { 2694874aeea5SJeff Kirsher int rc, rc2; 2695874aeea5SJeff Kirsher bool disabled; 2696874aeea5SJeff Kirsher 2697874aeea5SJeff Kirsher netif_info(efx, drv, efx->net_dev, "resetting (%s)\n", 2698874aeea5SJeff Kirsher RESET_TYPE(method)); 2699874aeea5SJeff Kirsher 2700c2f3b8e3SDaniel Pieczko efx_device_detach_sync(efx); 2701874aeea5SJeff Kirsher efx_reset_down(efx, method); 2702874aeea5SJeff Kirsher 2703874aeea5SJeff Kirsher rc = efx->type->reset(efx, method); 2704874aeea5SJeff Kirsher if (rc) { 2705874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, "failed to reset hardware\n"); 2706874aeea5SJeff Kirsher goto out; 2707874aeea5SJeff Kirsher } 2708874aeea5SJeff Kirsher 2709874aeea5SJeff Kirsher /* Clear flags for the scopes we covered. We assume the NIC and 2710874aeea5SJeff Kirsher * driver are now quiescent so that there is no race here. 2711874aeea5SJeff Kirsher */ 2712e283546cSEdward Cree if (method < RESET_TYPE_MAX_METHOD) 2713874aeea5SJeff Kirsher efx->reset_pending &= -(1 << (method + 1)); 2714e283546cSEdward Cree else /* it doesn't fit into the well-ordered scope hierarchy */ 2715e283546cSEdward Cree __clear_bit(method, &efx->reset_pending); 2716874aeea5SJeff Kirsher 2717874aeea5SJeff Kirsher /* Reinitialise bus-mastering, which may have been turned off before 2718874aeea5SJeff Kirsher * the reset was scheduled. This is still appropriate, even in the 2719874aeea5SJeff Kirsher * RESET_TYPE_DISABLE since this driver generally assumes the hardware 2720874aeea5SJeff Kirsher * can respond to requests. */ 2721874aeea5SJeff Kirsher pci_set_master(efx->pci_dev); 2722874aeea5SJeff Kirsher 2723874aeea5SJeff Kirsher out: 2724874aeea5SJeff Kirsher /* Leave device stopped if necessary */ 2725626950dbSAlexandre Rames disabled = rc || 2726626950dbSAlexandre Rames method == RESET_TYPE_DISABLE || 2727626950dbSAlexandre Rames method == RESET_TYPE_RECOVER_OR_DISABLE; 2728874aeea5SJeff Kirsher rc2 = efx_reset_up(efx, method, !disabled); 2729874aeea5SJeff Kirsher if (rc2) { 2730874aeea5SJeff Kirsher disabled = true; 2731874aeea5SJeff Kirsher if (!rc) 2732874aeea5SJeff Kirsher rc = rc2; 2733874aeea5SJeff Kirsher } 2734874aeea5SJeff Kirsher 2735874aeea5SJeff Kirsher if (disabled) { 2736874aeea5SJeff Kirsher dev_close(efx->net_dev); 2737874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, "has been disabled\n"); 2738874aeea5SJeff Kirsher efx->state = STATE_DISABLED; 2739874aeea5SJeff Kirsher } else { 2740874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "reset complete\n"); 2741874aeea5SJeff Kirsher netif_device_attach(efx->net_dev); 2742874aeea5SJeff Kirsher } 2743874aeea5SJeff Kirsher return rc; 2744874aeea5SJeff Kirsher } 2745874aeea5SJeff Kirsher 2746626950dbSAlexandre Rames /* Try recovery mechanisms. 2747626950dbSAlexandre Rames * For now only EEH is supported. 2748626950dbSAlexandre Rames * Returns 0 if the recovery mechanisms are unsuccessful. 2749626950dbSAlexandre Rames * Returns a non-zero value otherwise. 2750626950dbSAlexandre Rames */ 2751b28405b0SAlexandre Rames int efx_try_recovery(struct efx_nic *efx) 2752626950dbSAlexandre Rames { 2753626950dbSAlexandre Rames #ifdef CONFIG_EEH 2754626950dbSAlexandre Rames /* A PCI error can occur and not be seen by EEH because nothing 2755626950dbSAlexandre Rames * happens on the PCI bus. In this case the driver may fail and 2756626950dbSAlexandre Rames * schedule a 'recover or reset', leading to this recovery handler. 2757626950dbSAlexandre Rames * Manually call the eeh failure check function. 2758626950dbSAlexandre Rames */ 275912a89dbaSBenjamin Herrenschmidt struct eeh_dev *eehdev = pci_dev_to_eeh_dev(efx->pci_dev); 2760626950dbSAlexandre Rames if (eeh_dev_check_failure(eehdev)) { 2761626950dbSAlexandre Rames /* The EEH mechanisms will handle the error and reset the 2762626950dbSAlexandre Rames * device if necessary. 2763626950dbSAlexandre Rames */ 2764626950dbSAlexandre Rames return 1; 2765626950dbSAlexandre Rames } 2766626950dbSAlexandre Rames #endif 2767626950dbSAlexandre Rames return 0; 2768626950dbSAlexandre Rames } 2769626950dbSAlexandre Rames 277074cd60a4SJon Cooper static void efx_wait_for_bist_end(struct efx_nic *efx) 277174cd60a4SJon Cooper { 277274cd60a4SJon Cooper int i; 277374cd60a4SJon Cooper 277474cd60a4SJon Cooper for (i = 0; i < BIST_WAIT_DELAY_COUNT; ++i) { 277574cd60a4SJon Cooper if (efx_mcdi_poll_reboot(efx)) 277674cd60a4SJon Cooper goto out; 277774cd60a4SJon Cooper msleep(BIST_WAIT_DELAY_MS); 277874cd60a4SJon Cooper } 277974cd60a4SJon Cooper 278074cd60a4SJon Cooper netif_err(efx, drv, efx->net_dev, "Warning: No MC reboot after BIST mode\n"); 278174cd60a4SJon Cooper out: 278274cd60a4SJon Cooper /* Either way unset the BIST flag. If we found no reboot we probably 278374cd60a4SJon Cooper * won't recover, but we should try. 278474cd60a4SJon Cooper */ 278574cd60a4SJon Cooper efx->mc_bist_for_other_fn = false; 278674cd60a4SJon Cooper } 278774cd60a4SJon Cooper 2788874aeea5SJeff Kirsher /* The worker thread exists so that code that cannot sleep can 2789874aeea5SJeff Kirsher * schedule a reset for later. 2790874aeea5SJeff Kirsher */ 2791874aeea5SJeff Kirsher static void efx_reset_work(struct work_struct *data) 2792874aeea5SJeff Kirsher { 2793874aeea5SJeff Kirsher struct efx_nic *efx = container_of(data, struct efx_nic, reset_work); 2794626950dbSAlexandre Rames unsigned long pending; 2795626950dbSAlexandre Rames enum reset_type method; 2796626950dbSAlexandre Rames 2797626950dbSAlexandre Rames pending = ACCESS_ONCE(efx->reset_pending); 2798626950dbSAlexandre Rames method = fls(pending) - 1; 2799626950dbSAlexandre Rames 280074cd60a4SJon Cooper if (method == RESET_TYPE_MC_BIST) 280174cd60a4SJon Cooper efx_wait_for_bist_end(efx); 280274cd60a4SJon Cooper 2803626950dbSAlexandre Rames if ((method == RESET_TYPE_RECOVER_OR_DISABLE || 2804626950dbSAlexandre Rames method == RESET_TYPE_RECOVER_OR_ALL) && 2805626950dbSAlexandre Rames efx_try_recovery(efx)) 2806626950dbSAlexandre Rames return; 2807874aeea5SJeff Kirsher 2808874aeea5SJeff Kirsher if (!pending) 2809874aeea5SJeff Kirsher return; 2810874aeea5SJeff Kirsher 2811874aeea5SJeff Kirsher rtnl_lock(); 28127153f623SBen Hutchings 28137153f623SBen Hutchings /* We checked the state in efx_schedule_reset() but it may 28147153f623SBen Hutchings * have changed by now. Now that we have the RTNL lock, 28157153f623SBen Hutchings * it cannot change again. 28167153f623SBen Hutchings */ 28177153f623SBen Hutchings if (efx->state == STATE_READY) 2818626950dbSAlexandre Rames (void)efx_reset(efx, method); 28197153f623SBen Hutchings 2820874aeea5SJeff Kirsher rtnl_unlock(); 2821874aeea5SJeff Kirsher } 2822874aeea5SJeff Kirsher 2823874aeea5SJeff Kirsher void efx_schedule_reset(struct efx_nic *efx, enum reset_type type) 2824874aeea5SJeff Kirsher { 2825874aeea5SJeff Kirsher enum reset_type method; 2826874aeea5SJeff Kirsher 2827626950dbSAlexandre Rames if (efx->state == STATE_RECOVERY) { 2828626950dbSAlexandre Rames netif_dbg(efx, drv, efx->net_dev, 2829626950dbSAlexandre Rames "recovering: skip scheduling %s reset\n", 2830626950dbSAlexandre Rames RESET_TYPE(type)); 2831626950dbSAlexandre Rames return; 2832626950dbSAlexandre Rames } 2833626950dbSAlexandre Rames 2834874aeea5SJeff Kirsher switch (type) { 2835874aeea5SJeff Kirsher case RESET_TYPE_INVISIBLE: 2836874aeea5SJeff Kirsher case RESET_TYPE_ALL: 2837626950dbSAlexandre Rames case RESET_TYPE_RECOVER_OR_ALL: 2838874aeea5SJeff Kirsher case RESET_TYPE_WORLD: 2839874aeea5SJeff Kirsher case RESET_TYPE_DISABLE: 2840626950dbSAlexandre Rames case RESET_TYPE_RECOVER_OR_DISABLE: 2841087e9025SJon Cooper case RESET_TYPE_DATAPATH: 284274cd60a4SJon Cooper case RESET_TYPE_MC_BIST: 2843e283546cSEdward Cree case RESET_TYPE_MCDI_TIMEOUT: 2844874aeea5SJeff Kirsher method = type; 2845874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "scheduling %s reset\n", 2846874aeea5SJeff Kirsher RESET_TYPE(method)); 2847874aeea5SJeff Kirsher break; 2848874aeea5SJeff Kirsher default: 2849874aeea5SJeff Kirsher method = efx->type->map_reset_reason(type); 2850874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, 2851874aeea5SJeff Kirsher "scheduling %s reset for %s\n", 2852874aeea5SJeff Kirsher RESET_TYPE(method), RESET_TYPE(type)); 2853874aeea5SJeff Kirsher break; 2854874aeea5SJeff Kirsher } 2855874aeea5SJeff Kirsher 2856874aeea5SJeff Kirsher set_bit(method, &efx->reset_pending); 28577153f623SBen Hutchings smp_mb(); /* ensure we change reset_pending before checking state */ 28587153f623SBen Hutchings 28597153f623SBen Hutchings /* If we're not READY then just leave the flags set as the cue 28607153f623SBen Hutchings * to abort probing or reschedule the reset later. 28617153f623SBen Hutchings */ 28627153f623SBen Hutchings if (ACCESS_ONCE(efx->state) != STATE_READY) 28637153f623SBen Hutchings return; 2864874aeea5SJeff Kirsher 2865874aeea5SJeff Kirsher /* efx_process_channel() will no longer read events once a 2866874aeea5SJeff Kirsher * reset is scheduled. So switch back to poll'd MCDI completions. */ 2867874aeea5SJeff Kirsher efx_mcdi_mode_poll(efx); 2868874aeea5SJeff Kirsher 2869874aeea5SJeff Kirsher queue_work(reset_workqueue, &efx->reset_work); 2870874aeea5SJeff Kirsher } 2871874aeea5SJeff Kirsher 2872874aeea5SJeff Kirsher /************************************************************************** 2873874aeea5SJeff Kirsher * 2874874aeea5SJeff Kirsher * List of NICs we support 2875874aeea5SJeff Kirsher * 2876874aeea5SJeff Kirsher **************************************************************************/ 2877874aeea5SJeff Kirsher 2878874aeea5SJeff Kirsher /* PCI device ID table */ 28799baa3c34SBenoit Taine static const struct pci_device_id efx_pci_table[] = { 2880547c474fSBen Hutchings {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0803), /* SFC9020 */ 2881874aeea5SJeff Kirsher .driver_data = (unsigned long) &siena_a0_nic_type}, 2882547c474fSBen Hutchings {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0813), /* SFL9021 */ 2883874aeea5SJeff Kirsher .driver_data = (unsigned long) &siena_a0_nic_type}, 28848127d661SBen Hutchings {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0903), /* SFC9120 PF */ 28858127d661SBen Hutchings .driver_data = (unsigned long) &efx_hunt_a0_nic_type}, 28866f7f8aa6SShradha Shah {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1903), /* SFC9120 VF */ 28876f7f8aa6SShradha Shah .driver_data = (unsigned long) &efx_hunt_a0_vf_nic_type}, 28883b06a00eSMateusz Wrzesinski {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0923), /* SFC9140 PF */ 28893b06a00eSMateusz Wrzesinski .driver_data = (unsigned long) &efx_hunt_a0_nic_type}, 2890dd248f1bSBert Kenward {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1923), /* SFC9140 VF */ 2891dd248f1bSBert Kenward .driver_data = (unsigned long) &efx_hunt_a0_vf_nic_type}, 2892dd248f1bSBert Kenward {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0a03), /* SFC9220 PF */ 2893dd248f1bSBert Kenward .driver_data = (unsigned long) &efx_hunt_a0_nic_type}, 2894dd248f1bSBert Kenward {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1a03), /* SFC9220 VF */ 2895dd248f1bSBert Kenward .driver_data = (unsigned long) &efx_hunt_a0_vf_nic_type}, 2896874aeea5SJeff Kirsher {0} /* end of list */ 2897874aeea5SJeff Kirsher }; 2898874aeea5SJeff Kirsher 2899874aeea5SJeff Kirsher /************************************************************************** 2900874aeea5SJeff Kirsher * 2901874aeea5SJeff Kirsher * Dummy PHY/MAC operations 2902874aeea5SJeff Kirsher * 2903874aeea5SJeff Kirsher * Can be used for some unimplemented operations 2904874aeea5SJeff Kirsher * Needed so all function pointers are valid and do not have to be tested 2905874aeea5SJeff Kirsher * before use 2906874aeea5SJeff Kirsher * 2907874aeea5SJeff Kirsher **************************************************************************/ 2908874aeea5SJeff Kirsher int efx_port_dummy_op_int(struct efx_nic *efx) 2909874aeea5SJeff Kirsher { 2910874aeea5SJeff Kirsher return 0; 2911874aeea5SJeff Kirsher } 2912874aeea5SJeff Kirsher void efx_port_dummy_op_void(struct efx_nic *efx) {} 2913874aeea5SJeff Kirsher 2914874aeea5SJeff Kirsher static bool efx_port_dummy_op_poll(struct efx_nic *efx) 2915874aeea5SJeff Kirsher { 2916874aeea5SJeff Kirsher return false; 2917874aeea5SJeff Kirsher } 2918874aeea5SJeff Kirsher 2919874aeea5SJeff Kirsher static const struct efx_phy_operations efx_dummy_phy_operations = { 2920874aeea5SJeff Kirsher .init = efx_port_dummy_op_int, 2921874aeea5SJeff Kirsher .reconfigure = efx_port_dummy_op_int, 2922874aeea5SJeff Kirsher .poll = efx_port_dummy_op_poll, 2923874aeea5SJeff Kirsher .fini = efx_port_dummy_op_void, 2924874aeea5SJeff Kirsher }; 2925874aeea5SJeff Kirsher 2926874aeea5SJeff Kirsher /************************************************************************** 2927874aeea5SJeff Kirsher * 2928874aeea5SJeff Kirsher * Data housekeeping 2929874aeea5SJeff Kirsher * 2930874aeea5SJeff Kirsher **************************************************************************/ 2931874aeea5SJeff Kirsher 2932874aeea5SJeff Kirsher /* This zeroes out and then fills in the invariants in a struct 2933874aeea5SJeff Kirsher * efx_nic (including all sub-structures). 2934874aeea5SJeff Kirsher */ 2935adeb15aaSBen Hutchings static int efx_init_struct(struct efx_nic *efx, 2936874aeea5SJeff Kirsher struct pci_dev *pci_dev, struct net_device *net_dev) 2937874aeea5SJeff Kirsher { 2938874aeea5SJeff Kirsher int i; 2939874aeea5SJeff Kirsher 2940874aeea5SJeff Kirsher /* Initialise common structures */ 29410bcf4a64SBen Hutchings INIT_LIST_HEAD(&efx->node); 29420bcf4a64SBen Hutchings INIT_LIST_HEAD(&efx->secondary_list); 2943874aeea5SJeff Kirsher spin_lock_init(&efx->biu_lock); 2944874aeea5SJeff Kirsher #ifdef CONFIG_SFC_MTD 2945874aeea5SJeff Kirsher INIT_LIST_HEAD(&efx->mtd_list); 2946874aeea5SJeff Kirsher #endif 2947874aeea5SJeff Kirsher INIT_WORK(&efx->reset_work, efx_reset_work); 2948874aeea5SJeff Kirsher INIT_DELAYED_WORK(&efx->monitor_work, efx_monitor); 2949dd40781eSBen Hutchings INIT_DELAYED_WORK(&efx->selftest_work, efx_selftest_async_work); 2950874aeea5SJeff Kirsher efx->pci_dev = pci_dev; 2951874aeea5SJeff Kirsher efx->msg_enable = debug; 2952f16aeea0SBen Hutchings efx->state = STATE_UNINIT; 2953874aeea5SJeff Kirsher strlcpy(efx->name, pci_name(pci_dev), sizeof(efx->name)); 2954874aeea5SJeff Kirsher 2955874aeea5SJeff Kirsher efx->net_dev = net_dev; 295643a3739dSJon Cooper efx->rx_prefix_size = efx->type->rx_prefix_size; 29572ec03014SAndrew Rybchenko efx->rx_ip_align = 29582ec03014SAndrew Rybchenko NET_IP_ALIGN ? (efx->rx_prefix_size + NET_IP_ALIGN) % 4 : 0; 295943a3739dSJon Cooper efx->rx_packet_hash_offset = 296043a3739dSJon Cooper efx->type->rx_hash_offset - efx->type->rx_prefix_size; 2961bd9a265dSJon Cooper efx->rx_packet_ts_offset = 2962bd9a265dSJon Cooper efx->type->rx_ts_offset - efx->type->rx_prefix_size; 2963874aeea5SJeff Kirsher spin_lock_init(&efx->stats_lock); 2964874aeea5SJeff Kirsher mutex_init(&efx->mac_lock); 2965874aeea5SJeff Kirsher efx->phy_op = &efx_dummy_phy_operations; 2966874aeea5SJeff Kirsher efx->mdio.dev = net_dev; 2967874aeea5SJeff Kirsher INIT_WORK(&efx->mac_work, efx_mac_work); 29689f2cb71cSBen Hutchings init_waitqueue_head(&efx->flush_wq); 2969874aeea5SJeff Kirsher 2970874aeea5SJeff Kirsher for (i = 0; i < EFX_MAX_CHANNELS; i++) { 2971874aeea5SJeff Kirsher efx->channel[i] = efx_alloc_channel(efx, i, NULL); 2972874aeea5SJeff Kirsher if (!efx->channel[i]) 2973874aeea5SJeff Kirsher goto fail; 2974d8291187SBen Hutchings efx->msi_context[i].efx = efx; 2975d8291187SBen Hutchings efx->msi_context[i].index = i; 2976874aeea5SJeff Kirsher } 2977874aeea5SJeff Kirsher 2978874aeea5SJeff Kirsher /* Higher numbered interrupt modes are less capable! */ 2979874aeea5SJeff Kirsher efx->interrupt_mode = max(efx->type->max_interrupt_mode, 2980874aeea5SJeff Kirsher interrupt_mode); 2981874aeea5SJeff Kirsher 2982874aeea5SJeff Kirsher /* Would be good to use the net_dev name, but we're too early */ 2983874aeea5SJeff Kirsher snprintf(efx->workqueue_name, sizeof(efx->workqueue_name), "sfc%s", 2984874aeea5SJeff Kirsher pci_name(pci_dev)); 2985874aeea5SJeff Kirsher efx->workqueue = create_singlethread_workqueue(efx->workqueue_name); 2986874aeea5SJeff Kirsher if (!efx->workqueue) 2987874aeea5SJeff Kirsher goto fail; 2988874aeea5SJeff Kirsher 2989874aeea5SJeff Kirsher return 0; 2990874aeea5SJeff Kirsher 2991874aeea5SJeff Kirsher fail: 2992874aeea5SJeff Kirsher efx_fini_struct(efx); 2993874aeea5SJeff Kirsher return -ENOMEM; 2994874aeea5SJeff Kirsher } 2995874aeea5SJeff Kirsher 2996874aeea5SJeff Kirsher static void efx_fini_struct(struct efx_nic *efx) 2997874aeea5SJeff Kirsher { 2998874aeea5SJeff Kirsher int i; 2999874aeea5SJeff Kirsher 3000874aeea5SJeff Kirsher for (i = 0; i < EFX_MAX_CHANNELS; i++) 3001874aeea5SJeff Kirsher kfree(efx->channel[i]); 3002874aeea5SJeff Kirsher 3003ef215e64SBen Hutchings kfree(efx->vpd_sn); 3004ef215e64SBen Hutchings 3005874aeea5SJeff Kirsher if (efx->workqueue) { 3006874aeea5SJeff Kirsher destroy_workqueue(efx->workqueue); 3007874aeea5SJeff Kirsher efx->workqueue = NULL; 3008874aeea5SJeff Kirsher } 3009874aeea5SJeff Kirsher } 3010874aeea5SJeff Kirsher 3011e4d112e4SEdward Cree void efx_update_sw_stats(struct efx_nic *efx, u64 *stats) 3012e4d112e4SEdward Cree { 3013e4d112e4SEdward Cree u64 n_rx_nodesc_trunc = 0; 3014e4d112e4SEdward Cree struct efx_channel *channel; 3015e4d112e4SEdward Cree 3016e4d112e4SEdward Cree efx_for_each_channel(channel, efx) 3017e4d112e4SEdward Cree n_rx_nodesc_trunc += channel->n_rx_nodesc_trunc; 3018e4d112e4SEdward Cree stats[GENERIC_STAT_rx_nodesc_trunc] = n_rx_nodesc_trunc; 3019e4d112e4SEdward Cree stats[GENERIC_STAT_rx_noskb_drops] = atomic_read(&efx->n_rx_noskb_drops); 3020e4d112e4SEdward Cree } 3021e4d112e4SEdward Cree 3022874aeea5SJeff Kirsher /************************************************************************** 3023874aeea5SJeff Kirsher * 3024874aeea5SJeff Kirsher * PCI interface 3025874aeea5SJeff Kirsher * 3026874aeea5SJeff Kirsher **************************************************************************/ 3027874aeea5SJeff Kirsher 3028874aeea5SJeff Kirsher /* Main body of final NIC shutdown code 3029874aeea5SJeff Kirsher * This is called only at module unload (or hotplug removal). 3030874aeea5SJeff Kirsher */ 3031874aeea5SJeff Kirsher static void efx_pci_remove_main(struct efx_nic *efx) 3032874aeea5SJeff Kirsher { 30337153f623SBen Hutchings /* Flush reset_work. It can no longer be scheduled since we 30347153f623SBen Hutchings * are not READY. 30357153f623SBen Hutchings */ 30367153f623SBen Hutchings BUG_ON(efx->state == STATE_READY); 30377153f623SBen Hutchings cancel_work_sync(&efx->reset_work); 30387153f623SBen Hutchings 3039d8291187SBen Hutchings efx_disable_interrupts(efx); 3040874aeea5SJeff Kirsher efx_nic_fini_interrupt(efx); 3041874aeea5SJeff Kirsher efx_fini_port(efx); 3042874aeea5SJeff Kirsher efx->type->fini(efx); 3043874aeea5SJeff Kirsher efx_fini_napi(efx); 3044874aeea5SJeff Kirsher efx_remove_all(efx); 3045874aeea5SJeff Kirsher } 3046874aeea5SJeff Kirsher 3047874aeea5SJeff Kirsher /* Final NIC shutdown 30482a3fc311SDaniel Pieczko * This is called only at module unload (or hotplug removal). A PF can call 30492a3fc311SDaniel Pieczko * this on its VFs to ensure they are unbound first. 3050874aeea5SJeff Kirsher */ 3051874aeea5SJeff Kirsher static void efx_pci_remove(struct pci_dev *pci_dev) 3052874aeea5SJeff Kirsher { 3053874aeea5SJeff Kirsher struct efx_nic *efx; 3054874aeea5SJeff Kirsher 3055874aeea5SJeff Kirsher efx = pci_get_drvdata(pci_dev); 3056874aeea5SJeff Kirsher if (!efx) 3057874aeea5SJeff Kirsher return; 3058874aeea5SJeff Kirsher 3059874aeea5SJeff Kirsher /* Mark the NIC as fini, then stop the interface */ 3060874aeea5SJeff Kirsher rtnl_lock(); 30610bcf4a64SBen Hutchings efx_dissociate(efx); 3062874aeea5SJeff Kirsher dev_close(efx->net_dev); 3063d8291187SBen Hutchings efx_disable_interrupts(efx); 3064ea6bb99eSEdward Cree efx->state = STATE_UNINIT; 3065874aeea5SJeff Kirsher rtnl_unlock(); 3066874aeea5SJeff Kirsher 30677fa8d547SShradha Shah if (efx->type->sriov_fini) 3068d98a4ffeSShradha Shah efx->type->sriov_fini(efx); 30697fa8d547SShradha Shah 3070874aeea5SJeff Kirsher efx_unregister_netdev(efx); 3071874aeea5SJeff Kirsher 3072874aeea5SJeff Kirsher efx_mtd_remove(efx); 3073874aeea5SJeff Kirsher 3074874aeea5SJeff Kirsher efx_pci_remove_main(efx); 3075874aeea5SJeff Kirsher 3076874aeea5SJeff Kirsher efx_fini_io(efx); 3077874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "shutdown successful\n"); 3078874aeea5SJeff Kirsher 3079874aeea5SJeff Kirsher efx_fini_struct(efx); 3080874aeea5SJeff Kirsher free_netdev(efx->net_dev); 3081626950dbSAlexandre Rames 3082626950dbSAlexandre Rames pci_disable_pcie_error_reporting(pci_dev); 3083874aeea5SJeff Kirsher }; 3084874aeea5SJeff Kirsher 3085460eeaa0SBen Hutchings /* NIC VPD information 3086460eeaa0SBen Hutchings * Called during probe to display the part number of the 3087460eeaa0SBen Hutchings * installed NIC. VPD is potentially very large but this should 3088460eeaa0SBen Hutchings * always appear within the first 512 bytes. 3089460eeaa0SBen Hutchings */ 3090460eeaa0SBen Hutchings #define SFC_VPD_LEN 512 3091ef215e64SBen Hutchings static void efx_probe_vpd_strings(struct efx_nic *efx) 3092460eeaa0SBen Hutchings { 3093460eeaa0SBen Hutchings struct pci_dev *dev = efx->pci_dev; 3094460eeaa0SBen Hutchings char vpd_data[SFC_VPD_LEN]; 3095460eeaa0SBen Hutchings ssize_t vpd_size; 3096ef215e64SBen Hutchings int ro_start, ro_size, i, j; 3097460eeaa0SBen Hutchings 3098460eeaa0SBen Hutchings /* Get the vpd data from the device */ 3099460eeaa0SBen Hutchings vpd_size = pci_read_vpd(dev, 0, sizeof(vpd_data), vpd_data); 3100460eeaa0SBen Hutchings if (vpd_size <= 0) { 3101460eeaa0SBen Hutchings netif_err(efx, drv, efx->net_dev, "Unable to read VPD\n"); 3102460eeaa0SBen Hutchings return; 3103460eeaa0SBen Hutchings } 3104460eeaa0SBen Hutchings 3105460eeaa0SBen Hutchings /* Get the Read only section */ 3106ef215e64SBen Hutchings ro_start = pci_vpd_find_tag(vpd_data, 0, vpd_size, PCI_VPD_LRDT_RO_DATA); 3107ef215e64SBen Hutchings if (ro_start < 0) { 3108460eeaa0SBen Hutchings netif_err(efx, drv, efx->net_dev, "VPD Read-only not found\n"); 3109460eeaa0SBen Hutchings return; 3110460eeaa0SBen Hutchings } 3111460eeaa0SBen Hutchings 3112ef215e64SBen Hutchings ro_size = pci_vpd_lrdt_size(&vpd_data[ro_start]); 3113ef215e64SBen Hutchings j = ro_size; 3114ef215e64SBen Hutchings i = ro_start + PCI_VPD_LRDT_TAG_SIZE; 3115460eeaa0SBen Hutchings if (i + j > vpd_size) 3116460eeaa0SBen Hutchings j = vpd_size - i; 3117460eeaa0SBen Hutchings 3118460eeaa0SBen Hutchings /* Get the Part number */ 3119460eeaa0SBen Hutchings i = pci_vpd_find_info_keyword(vpd_data, i, j, "PN"); 3120460eeaa0SBen Hutchings if (i < 0) { 3121460eeaa0SBen Hutchings netif_err(efx, drv, efx->net_dev, "Part number not found\n"); 3122460eeaa0SBen Hutchings return; 3123460eeaa0SBen Hutchings } 3124460eeaa0SBen Hutchings 3125460eeaa0SBen Hutchings j = pci_vpd_info_field_size(&vpd_data[i]); 3126460eeaa0SBen Hutchings i += PCI_VPD_INFO_FLD_HDR_SIZE; 3127460eeaa0SBen Hutchings if (i + j > vpd_size) { 3128460eeaa0SBen Hutchings netif_err(efx, drv, efx->net_dev, "Incomplete part number\n"); 3129460eeaa0SBen Hutchings return; 3130460eeaa0SBen Hutchings } 3131460eeaa0SBen Hutchings 3132460eeaa0SBen Hutchings netif_info(efx, drv, efx->net_dev, 3133460eeaa0SBen Hutchings "Part Number : %.*s\n", j, &vpd_data[i]); 3134ef215e64SBen Hutchings 3135ef215e64SBen Hutchings i = ro_start + PCI_VPD_LRDT_TAG_SIZE; 3136ef215e64SBen Hutchings j = ro_size; 3137ef215e64SBen Hutchings i = pci_vpd_find_info_keyword(vpd_data, i, j, "SN"); 3138ef215e64SBen Hutchings if (i < 0) { 3139ef215e64SBen Hutchings netif_err(efx, drv, efx->net_dev, "Serial number not found\n"); 3140ef215e64SBen Hutchings return; 3141ef215e64SBen Hutchings } 3142ef215e64SBen Hutchings 3143ef215e64SBen Hutchings j = pci_vpd_info_field_size(&vpd_data[i]); 3144ef215e64SBen Hutchings i += PCI_VPD_INFO_FLD_HDR_SIZE; 3145ef215e64SBen Hutchings if (i + j > vpd_size) { 3146ef215e64SBen Hutchings netif_err(efx, drv, efx->net_dev, "Incomplete serial number\n"); 3147ef215e64SBen Hutchings return; 3148ef215e64SBen Hutchings } 3149ef215e64SBen Hutchings 3150ef215e64SBen Hutchings efx->vpd_sn = kmalloc(j + 1, GFP_KERNEL); 3151ef215e64SBen Hutchings if (!efx->vpd_sn) 3152ef215e64SBen Hutchings return; 3153ef215e64SBen Hutchings 3154ef215e64SBen Hutchings snprintf(efx->vpd_sn, j + 1, "%s", &vpd_data[i]); 3155460eeaa0SBen Hutchings } 3156460eeaa0SBen Hutchings 3157460eeaa0SBen Hutchings 3158874aeea5SJeff Kirsher /* Main body of NIC initialisation 3159874aeea5SJeff Kirsher * This is called at module load (or hotplug insertion, theoretically). 3160874aeea5SJeff Kirsher */ 3161874aeea5SJeff Kirsher static int efx_pci_probe_main(struct efx_nic *efx) 3162874aeea5SJeff Kirsher { 3163874aeea5SJeff Kirsher int rc; 3164874aeea5SJeff Kirsher 3165874aeea5SJeff Kirsher /* Do start-of-day initialisation */ 3166874aeea5SJeff Kirsher rc = efx_probe_all(efx); 3167874aeea5SJeff Kirsher if (rc) 3168874aeea5SJeff Kirsher goto fail1; 3169874aeea5SJeff Kirsher 3170874aeea5SJeff Kirsher efx_init_napi(efx); 3171874aeea5SJeff Kirsher 3172874aeea5SJeff Kirsher rc = efx->type->init(efx); 3173874aeea5SJeff Kirsher if (rc) { 3174874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 3175874aeea5SJeff Kirsher "failed to initialise NIC\n"); 3176874aeea5SJeff Kirsher goto fail3; 3177874aeea5SJeff Kirsher } 3178874aeea5SJeff Kirsher 3179874aeea5SJeff Kirsher rc = efx_init_port(efx); 3180874aeea5SJeff Kirsher if (rc) { 3181874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 3182874aeea5SJeff Kirsher "failed to initialise port\n"); 3183874aeea5SJeff Kirsher goto fail4; 3184874aeea5SJeff Kirsher } 3185874aeea5SJeff Kirsher 3186874aeea5SJeff Kirsher rc = efx_nic_init_interrupt(efx); 3187874aeea5SJeff Kirsher if (rc) 3188874aeea5SJeff Kirsher goto fail5; 3189261e4d96SJon Cooper rc = efx_enable_interrupts(efx); 3190261e4d96SJon Cooper if (rc) 3191261e4d96SJon Cooper goto fail6; 3192874aeea5SJeff Kirsher 3193874aeea5SJeff Kirsher return 0; 3194874aeea5SJeff Kirsher 3195261e4d96SJon Cooper fail6: 3196261e4d96SJon Cooper efx_nic_fini_interrupt(efx); 3197874aeea5SJeff Kirsher fail5: 3198874aeea5SJeff Kirsher efx_fini_port(efx); 3199874aeea5SJeff Kirsher fail4: 3200874aeea5SJeff Kirsher efx->type->fini(efx); 3201874aeea5SJeff Kirsher fail3: 3202874aeea5SJeff Kirsher efx_fini_napi(efx); 3203874aeea5SJeff Kirsher efx_remove_all(efx); 3204874aeea5SJeff Kirsher fail1: 3205874aeea5SJeff Kirsher return rc; 3206874aeea5SJeff Kirsher } 3207874aeea5SJeff Kirsher 32088a531400SJon Cooper static int efx_pci_probe_post_io(struct efx_nic *efx) 32098a531400SJon Cooper { 32108a531400SJon Cooper struct net_device *net_dev = efx->net_dev; 32118a531400SJon Cooper int rc = efx_pci_probe_main(efx); 32128a531400SJon Cooper 32138a531400SJon Cooper if (rc) 32148a531400SJon Cooper return rc; 32158a531400SJon Cooper 32168a531400SJon Cooper if (efx->type->sriov_init) { 32178a531400SJon Cooper rc = efx->type->sriov_init(efx); 32188a531400SJon Cooper if (rc) 32198a531400SJon Cooper netif_err(efx, probe, efx->net_dev, 32208a531400SJon Cooper "SR-IOV can't be enabled rc %d\n", rc); 32218a531400SJon Cooper } 32228a531400SJon Cooper 32238a531400SJon Cooper /* Determine netdevice features */ 32248a531400SJon Cooper net_dev->features |= (efx->type->offload_features | NETIF_F_SG | 32258a531400SJon Cooper NETIF_F_TSO | NETIF_F_RXCSUM); 32268a531400SJon Cooper if (efx->type->offload_features & (NETIF_F_IPV6_CSUM | NETIF_F_HW_CSUM)) 32278a531400SJon Cooper net_dev->features |= NETIF_F_TSO6; 32288a531400SJon Cooper /* Check whether device supports TSO */ 32298a531400SJon Cooper if (!efx->type->tso_versions || !efx->type->tso_versions(efx)) 32308a531400SJon Cooper net_dev->features &= ~NETIF_F_ALL_TSO; 32318a531400SJon Cooper /* Mask for features that also apply to VLAN devices */ 32328a531400SJon Cooper net_dev->vlan_features |= (NETIF_F_HW_CSUM | NETIF_F_SG | 32338a531400SJon Cooper NETIF_F_HIGHDMA | NETIF_F_ALL_TSO | 32348a531400SJon Cooper NETIF_F_RXCSUM); 32358a531400SJon Cooper 32368a531400SJon Cooper net_dev->hw_features = net_dev->features & ~efx->fixed_features; 32378a531400SJon Cooper 32388a531400SJon Cooper /* Disable VLAN filtering by default. It may be enforced if 32398a531400SJon Cooper * the feature is fixed (i.e. VLAN filters are required to 32408a531400SJon Cooper * receive VLAN tagged packets due to vPort restrictions). 32418a531400SJon Cooper */ 32428a531400SJon Cooper net_dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 32438a531400SJon Cooper net_dev->features |= efx->fixed_features; 32448a531400SJon Cooper 32458a531400SJon Cooper rc = efx_register_netdev(efx); 32468a531400SJon Cooper if (!rc) 32478a531400SJon Cooper return 0; 32488a531400SJon Cooper 32498a531400SJon Cooper efx_pci_remove_main(efx); 32508a531400SJon Cooper return rc; 32518a531400SJon Cooper } 32528a531400SJon Cooper 3253874aeea5SJeff Kirsher /* NIC initialisation 3254874aeea5SJeff Kirsher * 3255874aeea5SJeff Kirsher * This is called at module load (or hotplug insertion, 325673ba7b68SBen Hutchings * theoretically). It sets up PCI mappings, resets the NIC, 3257874aeea5SJeff Kirsher * sets up and registers the network devices with the kernel and hooks 3258874aeea5SJeff Kirsher * the interrupt service routine. It does not prepare the device for 3259874aeea5SJeff Kirsher * transmission; this is left to the first time one of the network 3260874aeea5SJeff Kirsher * interfaces is brought up (i.e. efx_net_open). 3261874aeea5SJeff Kirsher */ 326287d1fc11SBill Pemberton static int efx_pci_probe(struct pci_dev *pci_dev, 3263874aeea5SJeff Kirsher const struct pci_device_id *entry) 3264874aeea5SJeff Kirsher { 3265874aeea5SJeff Kirsher struct net_device *net_dev; 3266874aeea5SJeff Kirsher struct efx_nic *efx; 3267fadac6aaSBen Hutchings int rc; 3268874aeea5SJeff Kirsher 3269874aeea5SJeff Kirsher /* Allocate and initialise a struct net_device and struct efx_nic */ 3270874aeea5SJeff Kirsher net_dev = alloc_etherdev_mqs(sizeof(*efx), EFX_MAX_CORE_TX_QUEUES, 3271874aeea5SJeff Kirsher EFX_MAX_RX_QUEUES); 3272874aeea5SJeff Kirsher if (!net_dev) 3273874aeea5SJeff Kirsher return -ENOMEM; 3274adeb15aaSBen Hutchings efx = netdev_priv(net_dev); 3275adeb15aaSBen Hutchings efx->type = (const struct efx_nic_type *) entry->driver_data; 3276ebfcd0fdSAndrew Rybchenko efx->fixed_features |= NETIF_F_HIGHDMA; 3277eb7cfd8cSAndrew Rybchenko 3278874aeea5SJeff Kirsher pci_set_drvdata(pci_dev, efx); 3279874aeea5SJeff Kirsher SET_NETDEV_DEV(net_dev, &pci_dev->dev); 3280adeb15aaSBen Hutchings rc = efx_init_struct(efx, pci_dev, net_dev); 3281874aeea5SJeff Kirsher if (rc) 3282874aeea5SJeff Kirsher goto fail1; 3283874aeea5SJeff Kirsher 3284874aeea5SJeff Kirsher netif_info(efx, probe, efx->net_dev, 3285874aeea5SJeff Kirsher "Solarflare NIC detected\n"); 3286874aeea5SJeff Kirsher 32876f7f8aa6SShradha Shah if (!efx->type->is_vf) 3288ef215e64SBen Hutchings efx_probe_vpd_strings(efx); 3289460eeaa0SBen Hutchings 3290874aeea5SJeff Kirsher /* Set up basic I/O (BAR mappings etc) */ 3291874aeea5SJeff Kirsher rc = efx_init_io(efx); 3292874aeea5SJeff Kirsher if (rc) 3293874aeea5SJeff Kirsher goto fail2; 3294874aeea5SJeff Kirsher 32958a531400SJon Cooper rc = efx_pci_probe_post_io(efx); 32968a531400SJon Cooper if (rc) { 32978a531400SJon Cooper /* On failure, retry once immediately. 32988a531400SJon Cooper * If we aborted probe due to a scheduled reset, dismiss it. 32998a531400SJon Cooper */ 33008a531400SJon Cooper efx->reset_pending = 0; 33018a531400SJon Cooper rc = efx_pci_probe_post_io(efx); 33028a531400SJon Cooper if (rc) { 33038a531400SJon Cooper /* On another failure, retry once more 33048a531400SJon Cooper * after a 50-305ms delay. 33058a531400SJon Cooper */ 33068a531400SJon Cooper unsigned char r; 33078a531400SJon Cooper 33088a531400SJon Cooper get_random_bytes(&r, 1); 33098a531400SJon Cooper msleep((unsigned int)r + 50); 33108a531400SJon Cooper efx->reset_pending = 0; 33118a531400SJon Cooper rc = efx_pci_probe_post_io(efx); 33128a531400SJon Cooper } 33138a531400SJon Cooper } 3314fadac6aaSBen Hutchings if (rc) 3315874aeea5SJeff Kirsher goto fail3; 3316874aeea5SJeff Kirsher 3317874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, "initialisation successful\n"); 3318874aeea5SJeff Kirsher 33197c43161cSBen Hutchings /* Try to create MTDs, but allow this to fail */ 3320874aeea5SJeff Kirsher rtnl_lock(); 33217c43161cSBen Hutchings rc = efx_mtd_probe(efx); 3322874aeea5SJeff Kirsher rtnl_unlock(); 332309a04204SBert Kenward if (rc && rc != -EPERM) 33247c43161cSBen Hutchings netif_warn(efx, probe, efx->net_dev, 33257c43161cSBen Hutchings "failed to create MTDs (%d)\n", rc); 33267c43161cSBen Hutchings 3327626950dbSAlexandre Rames rc = pci_enable_pcie_error_reporting(pci_dev); 3328626950dbSAlexandre Rames if (rc && rc != -EINVAL) 332909a04204SBert Kenward netif_notice(efx, probe, efx->net_dev, 333009a04204SBert Kenward "PCIE error reporting unavailable (%d).\n", 333109a04204SBert Kenward rc); 3332626950dbSAlexandre Rames 3333e5fbd977SJon Cooper if (efx->type->udp_tnl_push_ports) 3334e5fbd977SJon Cooper efx->type->udp_tnl_push_ports(efx); 3335e5fbd977SJon Cooper 3336874aeea5SJeff Kirsher return 0; 3337874aeea5SJeff Kirsher 3338874aeea5SJeff Kirsher fail3: 3339874aeea5SJeff Kirsher efx_fini_io(efx); 3340874aeea5SJeff Kirsher fail2: 3341874aeea5SJeff Kirsher efx_fini_struct(efx); 3342874aeea5SJeff Kirsher fail1: 3343874aeea5SJeff Kirsher WARN_ON(rc > 0); 3344874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "initialisation failed. rc=%d\n", rc); 3345874aeea5SJeff Kirsher free_netdev(net_dev); 3346874aeea5SJeff Kirsher return rc; 3347874aeea5SJeff Kirsher } 3348874aeea5SJeff Kirsher 3349834e23ddSShradha Shah /* efx_pci_sriov_configure returns the actual number of Virtual Functions 3350834e23ddSShradha Shah * enabled on success 3351834e23ddSShradha Shah */ 3352834e23ddSShradha Shah #ifdef CONFIG_SFC_SRIOV 3353834e23ddSShradha Shah static int efx_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 3354834e23ddSShradha Shah { 3355834e23ddSShradha Shah int rc; 3356834e23ddSShradha Shah struct efx_nic *efx = pci_get_drvdata(dev); 3357834e23ddSShradha Shah 3358834e23ddSShradha Shah if (efx->type->sriov_configure) { 3359834e23ddSShradha Shah rc = efx->type->sriov_configure(efx, num_vfs); 3360834e23ddSShradha Shah if (rc) 3361834e23ddSShradha Shah return rc; 3362834e23ddSShradha Shah else 3363834e23ddSShradha Shah return num_vfs; 3364834e23ddSShradha Shah } else 3365834e23ddSShradha Shah return -EOPNOTSUPP; 3366834e23ddSShradha Shah } 3367834e23ddSShradha Shah #endif 3368834e23ddSShradha Shah 3369874aeea5SJeff Kirsher static int efx_pm_freeze(struct device *dev) 3370874aeea5SJeff Kirsher { 3371874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 3372874aeea5SJeff Kirsher 337361da026dSBen Hutchings rtnl_lock(); 337461da026dSBen Hutchings 33756032fb56SBen Hutchings if (efx->state != STATE_DISABLED) { 3376f16aeea0SBen Hutchings efx->state = STATE_UNINIT; 3377874aeea5SJeff Kirsher 3378c2f3b8e3SDaniel Pieczko efx_device_detach_sync(efx); 3379874aeea5SJeff Kirsher 3380874aeea5SJeff Kirsher efx_stop_all(efx); 3381d8291187SBen Hutchings efx_disable_interrupts(efx); 33826032fb56SBen Hutchings } 3383874aeea5SJeff Kirsher 338461da026dSBen Hutchings rtnl_unlock(); 338561da026dSBen Hutchings 3386874aeea5SJeff Kirsher return 0; 3387874aeea5SJeff Kirsher } 3388874aeea5SJeff Kirsher 3389874aeea5SJeff Kirsher static int efx_pm_thaw(struct device *dev) 3390874aeea5SJeff Kirsher { 3391261e4d96SJon Cooper int rc; 3392874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 3393874aeea5SJeff Kirsher 339461da026dSBen Hutchings rtnl_lock(); 339561da026dSBen Hutchings 33966032fb56SBen Hutchings if (efx->state != STATE_DISABLED) { 3397261e4d96SJon Cooper rc = efx_enable_interrupts(efx); 3398261e4d96SJon Cooper if (rc) 3399261e4d96SJon Cooper goto fail; 3400874aeea5SJeff Kirsher 3401874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 3402874aeea5SJeff Kirsher efx->phy_op->reconfigure(efx); 3403874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 3404874aeea5SJeff Kirsher 3405874aeea5SJeff Kirsher efx_start_all(efx); 3406874aeea5SJeff Kirsher 3407874aeea5SJeff Kirsher netif_device_attach(efx->net_dev); 3408874aeea5SJeff Kirsher 3409f16aeea0SBen Hutchings efx->state = STATE_READY; 3410874aeea5SJeff Kirsher 3411874aeea5SJeff Kirsher efx->type->resume_wol(efx); 34126032fb56SBen Hutchings } 3413874aeea5SJeff Kirsher 341461da026dSBen Hutchings rtnl_unlock(); 341561da026dSBen Hutchings 3416874aeea5SJeff Kirsher /* Reschedule any quenched resets scheduled during efx_pm_freeze() */ 3417874aeea5SJeff Kirsher queue_work(reset_workqueue, &efx->reset_work); 3418874aeea5SJeff Kirsher 3419874aeea5SJeff Kirsher return 0; 3420261e4d96SJon Cooper 3421261e4d96SJon Cooper fail: 3422261e4d96SJon Cooper rtnl_unlock(); 3423261e4d96SJon Cooper 3424261e4d96SJon Cooper return rc; 3425874aeea5SJeff Kirsher } 3426874aeea5SJeff Kirsher 3427874aeea5SJeff Kirsher static int efx_pm_poweroff(struct device *dev) 3428874aeea5SJeff Kirsher { 3429874aeea5SJeff Kirsher struct pci_dev *pci_dev = to_pci_dev(dev); 3430874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(pci_dev); 3431874aeea5SJeff Kirsher 3432874aeea5SJeff Kirsher efx->type->fini(efx); 3433874aeea5SJeff Kirsher 3434874aeea5SJeff Kirsher efx->reset_pending = 0; 3435874aeea5SJeff Kirsher 3436874aeea5SJeff Kirsher pci_save_state(pci_dev); 3437874aeea5SJeff Kirsher return pci_set_power_state(pci_dev, PCI_D3hot); 3438874aeea5SJeff Kirsher } 3439874aeea5SJeff Kirsher 3440874aeea5SJeff Kirsher /* Used for both resume and restore */ 3441874aeea5SJeff Kirsher static int efx_pm_resume(struct device *dev) 3442874aeea5SJeff Kirsher { 3443874aeea5SJeff Kirsher struct pci_dev *pci_dev = to_pci_dev(dev); 3444874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(pci_dev); 3445874aeea5SJeff Kirsher int rc; 3446874aeea5SJeff Kirsher 3447874aeea5SJeff Kirsher rc = pci_set_power_state(pci_dev, PCI_D0); 3448874aeea5SJeff Kirsher if (rc) 3449874aeea5SJeff Kirsher return rc; 3450874aeea5SJeff Kirsher pci_restore_state(pci_dev); 3451874aeea5SJeff Kirsher rc = pci_enable_device(pci_dev); 3452874aeea5SJeff Kirsher if (rc) 3453874aeea5SJeff Kirsher return rc; 3454874aeea5SJeff Kirsher pci_set_master(efx->pci_dev); 3455874aeea5SJeff Kirsher rc = efx->type->reset(efx, RESET_TYPE_ALL); 3456874aeea5SJeff Kirsher if (rc) 3457874aeea5SJeff Kirsher return rc; 3458874aeea5SJeff Kirsher rc = efx->type->init(efx); 3459874aeea5SJeff Kirsher if (rc) 3460874aeea5SJeff Kirsher return rc; 3461261e4d96SJon Cooper rc = efx_pm_thaw(dev); 3462261e4d96SJon Cooper return rc; 3463874aeea5SJeff Kirsher } 3464874aeea5SJeff Kirsher 3465874aeea5SJeff Kirsher static int efx_pm_suspend(struct device *dev) 3466874aeea5SJeff Kirsher { 3467874aeea5SJeff Kirsher int rc; 3468874aeea5SJeff Kirsher 3469874aeea5SJeff Kirsher efx_pm_freeze(dev); 3470874aeea5SJeff Kirsher rc = efx_pm_poweroff(dev); 3471874aeea5SJeff Kirsher if (rc) 3472874aeea5SJeff Kirsher efx_pm_resume(dev); 3473874aeea5SJeff Kirsher return rc; 3474874aeea5SJeff Kirsher } 3475874aeea5SJeff Kirsher 347618e83e4cSBen Hutchings static const struct dev_pm_ops efx_pm_ops = { 3477874aeea5SJeff Kirsher .suspend = efx_pm_suspend, 3478874aeea5SJeff Kirsher .resume = efx_pm_resume, 3479874aeea5SJeff Kirsher .freeze = efx_pm_freeze, 3480874aeea5SJeff Kirsher .thaw = efx_pm_thaw, 3481874aeea5SJeff Kirsher .poweroff = efx_pm_poweroff, 3482874aeea5SJeff Kirsher .restore = efx_pm_resume, 3483874aeea5SJeff Kirsher }; 3484874aeea5SJeff Kirsher 3485626950dbSAlexandre Rames /* A PCI error affecting this device was detected. 3486626950dbSAlexandre Rames * At this point MMIO and DMA may be disabled. 3487626950dbSAlexandre Rames * Stop the software path and request a slot reset. 3488626950dbSAlexandre Rames */ 3489debd0034Sstephen hemminger static pci_ers_result_t efx_io_error_detected(struct pci_dev *pdev, 3490626950dbSAlexandre Rames enum pci_channel_state state) 3491626950dbSAlexandre Rames { 3492626950dbSAlexandre Rames pci_ers_result_t status = PCI_ERS_RESULT_RECOVERED; 3493626950dbSAlexandre Rames struct efx_nic *efx = pci_get_drvdata(pdev); 3494626950dbSAlexandre Rames 3495626950dbSAlexandre Rames if (state == pci_channel_io_perm_failure) 3496626950dbSAlexandre Rames return PCI_ERS_RESULT_DISCONNECT; 3497626950dbSAlexandre Rames 3498626950dbSAlexandre Rames rtnl_lock(); 3499626950dbSAlexandre Rames 3500626950dbSAlexandre Rames if (efx->state != STATE_DISABLED) { 3501626950dbSAlexandre Rames efx->state = STATE_RECOVERY; 3502626950dbSAlexandre Rames efx->reset_pending = 0; 3503626950dbSAlexandre Rames 3504626950dbSAlexandre Rames efx_device_detach_sync(efx); 3505626950dbSAlexandre Rames 3506626950dbSAlexandre Rames efx_stop_all(efx); 3507d8291187SBen Hutchings efx_disable_interrupts(efx); 3508626950dbSAlexandre Rames 3509626950dbSAlexandre Rames status = PCI_ERS_RESULT_NEED_RESET; 3510626950dbSAlexandre Rames } else { 3511626950dbSAlexandre Rames /* If the interface is disabled we don't want to do anything 3512626950dbSAlexandre Rames * with it. 3513626950dbSAlexandre Rames */ 3514626950dbSAlexandre Rames status = PCI_ERS_RESULT_RECOVERED; 3515626950dbSAlexandre Rames } 3516626950dbSAlexandre Rames 3517626950dbSAlexandre Rames rtnl_unlock(); 3518626950dbSAlexandre Rames 3519626950dbSAlexandre Rames pci_disable_device(pdev); 3520626950dbSAlexandre Rames 3521626950dbSAlexandre Rames return status; 3522626950dbSAlexandre Rames } 3523626950dbSAlexandre Rames 3524dbedd44eSJoe Perches /* Fake a successful reset, which will be performed later in efx_io_resume. */ 3525debd0034Sstephen hemminger static pci_ers_result_t efx_io_slot_reset(struct pci_dev *pdev) 3526626950dbSAlexandre Rames { 3527626950dbSAlexandre Rames struct efx_nic *efx = pci_get_drvdata(pdev); 3528626950dbSAlexandre Rames pci_ers_result_t status = PCI_ERS_RESULT_RECOVERED; 3529626950dbSAlexandre Rames int rc; 3530626950dbSAlexandre Rames 3531626950dbSAlexandre Rames if (pci_enable_device(pdev)) { 3532626950dbSAlexandre Rames netif_err(efx, hw, efx->net_dev, 3533626950dbSAlexandre Rames "Cannot re-enable PCI device after reset.\n"); 3534626950dbSAlexandre Rames status = PCI_ERS_RESULT_DISCONNECT; 3535626950dbSAlexandre Rames } 3536626950dbSAlexandre Rames 3537626950dbSAlexandre Rames rc = pci_cleanup_aer_uncorrect_error_status(pdev); 3538626950dbSAlexandre Rames if (rc) { 3539626950dbSAlexandre Rames netif_err(efx, hw, efx->net_dev, 3540626950dbSAlexandre Rames "pci_cleanup_aer_uncorrect_error_status failed (%d)\n", rc); 3541626950dbSAlexandre Rames /* Non-fatal error. Continue. */ 3542626950dbSAlexandre Rames } 3543626950dbSAlexandre Rames 3544626950dbSAlexandre Rames return status; 3545626950dbSAlexandre Rames } 3546626950dbSAlexandre Rames 3547626950dbSAlexandre Rames /* Perform the actual reset and resume I/O operations. */ 3548626950dbSAlexandre Rames static void efx_io_resume(struct pci_dev *pdev) 3549626950dbSAlexandre Rames { 3550626950dbSAlexandre Rames struct efx_nic *efx = pci_get_drvdata(pdev); 3551626950dbSAlexandre Rames int rc; 3552626950dbSAlexandre Rames 3553626950dbSAlexandre Rames rtnl_lock(); 3554626950dbSAlexandre Rames 3555626950dbSAlexandre Rames if (efx->state == STATE_DISABLED) 3556626950dbSAlexandre Rames goto out; 3557626950dbSAlexandre Rames 3558626950dbSAlexandre Rames rc = efx_reset(efx, RESET_TYPE_ALL); 3559626950dbSAlexandre Rames if (rc) { 3560626950dbSAlexandre Rames netif_err(efx, hw, efx->net_dev, 3561626950dbSAlexandre Rames "efx_reset failed after PCI error (%d)\n", rc); 3562626950dbSAlexandre Rames } else { 3563626950dbSAlexandre Rames efx->state = STATE_READY; 3564626950dbSAlexandre Rames netif_dbg(efx, hw, efx->net_dev, 3565626950dbSAlexandre Rames "Done resetting and resuming IO after PCI error.\n"); 3566626950dbSAlexandre Rames } 3567626950dbSAlexandre Rames 3568626950dbSAlexandre Rames out: 3569626950dbSAlexandre Rames rtnl_unlock(); 3570626950dbSAlexandre Rames } 3571626950dbSAlexandre Rames 3572626950dbSAlexandre Rames /* For simplicity and reliability, we always require a slot reset and try to 3573626950dbSAlexandre Rames * reset the hardware when a pci error affecting the device is detected. 3574626950dbSAlexandre Rames * We leave both the link_reset and mmio_enabled callback unimplemented: 3575626950dbSAlexandre Rames * with our request for slot reset the mmio_enabled callback will never be 3576626950dbSAlexandre Rames * called, and the link_reset callback is not used by AER or EEH mechanisms. 3577626950dbSAlexandre Rames */ 3578c300366bSJulia Lawall static const struct pci_error_handlers efx_err_handlers = { 3579626950dbSAlexandre Rames .error_detected = efx_io_error_detected, 3580626950dbSAlexandre Rames .slot_reset = efx_io_slot_reset, 3581626950dbSAlexandre Rames .resume = efx_io_resume, 3582626950dbSAlexandre Rames }; 3583626950dbSAlexandre Rames 3584874aeea5SJeff Kirsher static struct pci_driver efx_pci_driver = { 3585874aeea5SJeff Kirsher .name = KBUILD_MODNAME, 3586874aeea5SJeff Kirsher .id_table = efx_pci_table, 3587874aeea5SJeff Kirsher .probe = efx_pci_probe, 3588874aeea5SJeff Kirsher .remove = efx_pci_remove, 3589874aeea5SJeff Kirsher .driver.pm = &efx_pm_ops, 3590626950dbSAlexandre Rames .err_handler = &efx_err_handlers, 3591834e23ddSShradha Shah #ifdef CONFIG_SFC_SRIOV 3592834e23ddSShradha Shah .sriov_configure = efx_pci_sriov_configure, 3593834e23ddSShradha Shah #endif 3594874aeea5SJeff Kirsher }; 3595874aeea5SJeff Kirsher 3596874aeea5SJeff Kirsher /************************************************************************** 3597874aeea5SJeff Kirsher * 3598874aeea5SJeff Kirsher * Kernel module interface 3599874aeea5SJeff Kirsher * 3600874aeea5SJeff Kirsher *************************************************************************/ 3601874aeea5SJeff Kirsher 3602874aeea5SJeff Kirsher module_param(interrupt_mode, uint, 0444); 3603874aeea5SJeff Kirsher MODULE_PARM_DESC(interrupt_mode, 3604874aeea5SJeff Kirsher "Interrupt mode (0=>MSIX 1=>MSI 2=>legacy)"); 3605874aeea5SJeff Kirsher 3606874aeea5SJeff Kirsher static int __init efx_init_module(void) 3607874aeea5SJeff Kirsher { 3608874aeea5SJeff Kirsher int rc; 3609874aeea5SJeff Kirsher 3610874aeea5SJeff Kirsher printk(KERN_INFO "Solarflare NET driver v" EFX_DRIVER_VERSION "\n"); 3611874aeea5SJeff Kirsher 3612874aeea5SJeff Kirsher rc = register_netdevice_notifier(&efx_netdev_notifier); 3613874aeea5SJeff Kirsher if (rc) 3614874aeea5SJeff Kirsher goto err_notifier; 3615874aeea5SJeff Kirsher 36167fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 3617cd2d5b52SBen Hutchings rc = efx_init_sriov(); 3618cd2d5b52SBen Hutchings if (rc) 3619cd2d5b52SBen Hutchings goto err_sriov; 36207fa8d547SShradha Shah #endif 3621cd2d5b52SBen Hutchings 3622874aeea5SJeff Kirsher reset_workqueue = create_singlethread_workqueue("sfc_reset"); 3623874aeea5SJeff Kirsher if (!reset_workqueue) { 3624874aeea5SJeff Kirsher rc = -ENOMEM; 3625874aeea5SJeff Kirsher goto err_reset; 3626874aeea5SJeff Kirsher } 3627874aeea5SJeff Kirsher 3628874aeea5SJeff Kirsher rc = pci_register_driver(&efx_pci_driver); 3629874aeea5SJeff Kirsher if (rc < 0) 3630874aeea5SJeff Kirsher goto err_pci; 3631874aeea5SJeff Kirsher 3632874aeea5SJeff Kirsher return 0; 3633874aeea5SJeff Kirsher 3634874aeea5SJeff Kirsher err_pci: 3635874aeea5SJeff Kirsher destroy_workqueue(reset_workqueue); 3636874aeea5SJeff Kirsher err_reset: 36377fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 3638cd2d5b52SBen Hutchings efx_fini_sriov(); 3639cd2d5b52SBen Hutchings err_sriov: 36407fa8d547SShradha Shah #endif 3641874aeea5SJeff Kirsher unregister_netdevice_notifier(&efx_netdev_notifier); 3642874aeea5SJeff Kirsher err_notifier: 3643874aeea5SJeff Kirsher return rc; 3644874aeea5SJeff Kirsher } 3645874aeea5SJeff Kirsher 3646874aeea5SJeff Kirsher static void __exit efx_exit_module(void) 3647874aeea5SJeff Kirsher { 3648874aeea5SJeff Kirsher printk(KERN_INFO "Solarflare NET driver unloading\n"); 3649874aeea5SJeff Kirsher 3650874aeea5SJeff Kirsher pci_unregister_driver(&efx_pci_driver); 3651874aeea5SJeff Kirsher destroy_workqueue(reset_workqueue); 36527fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 3653cd2d5b52SBen Hutchings efx_fini_sriov(); 36547fa8d547SShradha Shah #endif 3655874aeea5SJeff Kirsher unregister_netdevice_notifier(&efx_netdev_notifier); 3656874aeea5SJeff Kirsher 3657874aeea5SJeff Kirsher } 3658874aeea5SJeff Kirsher 3659874aeea5SJeff Kirsher module_init(efx_init_module); 3660874aeea5SJeff Kirsher module_exit(efx_exit_module); 3661874aeea5SJeff Kirsher 3662874aeea5SJeff Kirsher MODULE_AUTHOR("Solarflare Communications and " 3663874aeea5SJeff Kirsher "Michael Brown <mbrown@fensystems.co.uk>"); 36646a350fdbSBen Hutchings MODULE_DESCRIPTION("Solarflare network driver"); 3665874aeea5SJeff Kirsher MODULE_LICENSE("GPL"); 3666874aeea5SJeff Kirsher MODULE_DEVICE_TABLE(pci, efx_pci_table); 366714077e9eSEdward Cree MODULE_VERSION(EFX_DRIVER_VERSION); 3668