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" 3071827443SEdward Cree #include "io.h" 31dd40781eSBen Hutchings #include "selftest.h" 327fa8d547SShradha Shah #include "sriov.h" 33874aeea5SJeff Kirsher 34874aeea5SJeff Kirsher #include "mcdi.h" 35e5fbd977SJon Cooper #include "mcdi_pcol.h" 36874aeea5SJeff Kirsher #include "workarounds.h" 37874aeea5SJeff Kirsher 38874aeea5SJeff Kirsher /************************************************************************** 39874aeea5SJeff Kirsher * 40874aeea5SJeff Kirsher * Type name strings 41874aeea5SJeff Kirsher * 42874aeea5SJeff Kirsher ************************************************************************** 43874aeea5SJeff Kirsher */ 44874aeea5SJeff Kirsher 45874aeea5SJeff Kirsher /* Loopback mode names (see LOOPBACK_MODE()) */ 46874aeea5SJeff Kirsher const unsigned int efx_loopback_mode_max = LOOPBACK_MAX; 4718e83e4cSBen Hutchings const char *const efx_loopback_mode_names[] = { 48874aeea5SJeff Kirsher [LOOPBACK_NONE] = "NONE", 49874aeea5SJeff Kirsher [LOOPBACK_DATA] = "DATAPATH", 50874aeea5SJeff Kirsher [LOOPBACK_GMAC] = "GMAC", 51874aeea5SJeff Kirsher [LOOPBACK_XGMII] = "XGMII", 52874aeea5SJeff Kirsher [LOOPBACK_XGXS] = "XGXS", 53874aeea5SJeff Kirsher [LOOPBACK_XAUI] = "XAUI", 54874aeea5SJeff Kirsher [LOOPBACK_GMII] = "GMII", 55874aeea5SJeff Kirsher [LOOPBACK_SGMII] = "SGMII", 56874aeea5SJeff Kirsher [LOOPBACK_XGBR] = "XGBR", 57874aeea5SJeff Kirsher [LOOPBACK_XFI] = "XFI", 58874aeea5SJeff Kirsher [LOOPBACK_XAUI_FAR] = "XAUI_FAR", 59874aeea5SJeff Kirsher [LOOPBACK_GMII_FAR] = "GMII_FAR", 60874aeea5SJeff Kirsher [LOOPBACK_SGMII_FAR] = "SGMII_FAR", 61874aeea5SJeff Kirsher [LOOPBACK_XFI_FAR] = "XFI_FAR", 62874aeea5SJeff Kirsher [LOOPBACK_GPHY] = "GPHY", 63874aeea5SJeff Kirsher [LOOPBACK_PHYXS] = "PHYXS", 64874aeea5SJeff Kirsher [LOOPBACK_PCS] = "PCS", 65874aeea5SJeff Kirsher [LOOPBACK_PMAPMD] = "PMA/PMD", 66874aeea5SJeff Kirsher [LOOPBACK_XPORT] = "XPORT", 67874aeea5SJeff Kirsher [LOOPBACK_XGMII_WS] = "XGMII_WS", 68874aeea5SJeff Kirsher [LOOPBACK_XAUI_WS] = "XAUI_WS", 69874aeea5SJeff Kirsher [LOOPBACK_XAUI_WS_FAR] = "XAUI_WS_FAR", 70874aeea5SJeff Kirsher [LOOPBACK_XAUI_WS_NEAR] = "XAUI_WS_NEAR", 71874aeea5SJeff Kirsher [LOOPBACK_GMII_WS] = "GMII_WS", 72874aeea5SJeff Kirsher [LOOPBACK_XFI_WS] = "XFI_WS", 73874aeea5SJeff Kirsher [LOOPBACK_XFI_WS_FAR] = "XFI_WS_FAR", 74874aeea5SJeff Kirsher [LOOPBACK_PHYXS_WS] = "PHYXS_WS", 75874aeea5SJeff Kirsher }; 76874aeea5SJeff Kirsher 77874aeea5SJeff Kirsher const unsigned int efx_reset_type_max = RESET_TYPE_MAX; 7818e83e4cSBen Hutchings const char *const efx_reset_type_names[] = { 79874aeea5SJeff Kirsher [RESET_TYPE_INVISIBLE] = "INVISIBLE", 80874aeea5SJeff Kirsher [RESET_TYPE_ALL] = "ALL", 81626950dbSAlexandre Rames [RESET_TYPE_RECOVER_OR_ALL] = "RECOVER_OR_ALL", 82874aeea5SJeff Kirsher [RESET_TYPE_WORLD] = "WORLD", 83626950dbSAlexandre Rames [RESET_TYPE_RECOVER_OR_DISABLE] = "RECOVER_OR_DISABLE", 84087e9025SJon Cooper [RESET_TYPE_DATAPATH] = "DATAPATH", 85e283546cSEdward Cree [RESET_TYPE_MC_BIST] = "MC_BIST", 86874aeea5SJeff Kirsher [RESET_TYPE_DISABLE] = "DISABLE", 87874aeea5SJeff Kirsher [RESET_TYPE_TX_WATCHDOG] = "TX_WATCHDOG", 88874aeea5SJeff Kirsher [RESET_TYPE_INT_ERROR] = "INT_ERROR", 893de82b91SAlexandre Rames [RESET_TYPE_DMA_ERROR] = "DMA_ERROR", 90874aeea5SJeff Kirsher [RESET_TYPE_TX_SKIP] = "TX_SKIP", 91874aeea5SJeff Kirsher [RESET_TYPE_MC_FAILURE] = "MC_FAILURE", 92e283546cSEdward Cree [RESET_TYPE_MCDI_TIMEOUT] = "MCDI_TIMEOUT (FLR)", 93874aeea5SJeff Kirsher }; 94874aeea5SJeff Kirsher 95e5fbd977SJon Cooper /* UDP tunnel type names */ 96e5fbd977SJon Cooper static const char *const efx_udp_tunnel_type_names[] = { 97e5fbd977SJon Cooper [TUNNEL_ENCAP_UDP_PORT_ENTRY_VXLAN] = "vxlan", 98e5fbd977SJon Cooper [TUNNEL_ENCAP_UDP_PORT_ENTRY_GENEVE] = "geneve", 99e5fbd977SJon Cooper }; 100e5fbd977SJon Cooper 101e5fbd977SJon Cooper void efx_get_udp_tunnel_type_name(u16 type, char *buf, size_t buflen) 102e5fbd977SJon Cooper { 103e5fbd977SJon Cooper if (type < ARRAY_SIZE(efx_udp_tunnel_type_names) && 104e5fbd977SJon Cooper efx_udp_tunnel_type_names[type] != NULL) 105e5fbd977SJon Cooper snprintf(buf, buflen, "%s", efx_udp_tunnel_type_names[type]); 106e5fbd977SJon Cooper else 107e5fbd977SJon Cooper snprintf(buf, buflen, "type %d", type); 108e5fbd977SJon Cooper } 109e5fbd977SJon Cooper 110874aeea5SJeff Kirsher /* Reset workqueue. If any NIC has a hardware failure then a reset will be 111874aeea5SJeff Kirsher * queued onto this work queue. This is not a per-nic work queue, because 112874aeea5SJeff Kirsher * efx_reset_work() acquires the rtnl lock, so resets are naturally serialised. 113874aeea5SJeff Kirsher */ 114874aeea5SJeff Kirsher static struct workqueue_struct *reset_workqueue; 115874aeea5SJeff Kirsher 11674cd60a4SJon Cooper /* How often and how many times to poll for a reset while waiting for a 11774cd60a4SJon Cooper * BIST that another function started to complete. 11874cd60a4SJon Cooper */ 11974cd60a4SJon Cooper #define BIST_WAIT_DELAY_MS 100 12074cd60a4SJon Cooper #define BIST_WAIT_DELAY_COUNT 100 12174cd60a4SJon Cooper 122874aeea5SJeff Kirsher /************************************************************************** 123874aeea5SJeff Kirsher * 124874aeea5SJeff Kirsher * Configurable values 125874aeea5SJeff Kirsher * 126874aeea5SJeff Kirsher *************************************************************************/ 127874aeea5SJeff Kirsher 128874aeea5SJeff Kirsher /* 129874aeea5SJeff Kirsher * Use separate channels for TX and RX events 130874aeea5SJeff Kirsher * 131874aeea5SJeff Kirsher * Set this to 1 to use separate channels for TX and RX. It allows us 132874aeea5SJeff Kirsher * to control interrupt affinity separately for TX and RX. 133874aeea5SJeff Kirsher * 134874aeea5SJeff Kirsher * This is only used in MSI-X interrupt mode 135874aeea5SJeff Kirsher */ 136b0fbdae1SShradha Shah bool efx_separate_tx_channels; 137b0fbdae1SShradha Shah module_param(efx_separate_tx_channels, bool, 0444); 138b0fbdae1SShradha Shah MODULE_PARM_DESC(efx_separate_tx_channels, 139874aeea5SJeff Kirsher "Use separate channels for TX and RX"); 140874aeea5SJeff Kirsher 141874aeea5SJeff Kirsher /* This is the weight assigned to each of the (per-channel) virtual 142874aeea5SJeff Kirsher * NAPI devices. 143874aeea5SJeff Kirsher */ 144874aeea5SJeff Kirsher static int napi_weight = 64; 145874aeea5SJeff Kirsher 146874aeea5SJeff Kirsher /* This is the time (in jiffies) between invocations of the hardware 147626950dbSAlexandre Rames * monitor. 148626950dbSAlexandre Rames * On Falcon-based NICs, this will: 149874aeea5SJeff Kirsher * - Check the on-board hardware monitor; 150874aeea5SJeff Kirsher * - Poll the link state and reconfigure the hardware as necessary. 151626950dbSAlexandre Rames * On Siena-based NICs for power systems with EEH support, this will give EEH a 152626950dbSAlexandre Rames * chance to start. 153874aeea5SJeff Kirsher */ 154874aeea5SJeff Kirsher static unsigned int efx_monitor_interval = 1 * HZ; 155874aeea5SJeff Kirsher 156874aeea5SJeff Kirsher /* Initial interrupt moderation settings. They can be modified after 157874aeea5SJeff Kirsher * module load with ethtool. 158874aeea5SJeff Kirsher * 159874aeea5SJeff Kirsher * The default for RX should strike a balance between increasing the 160874aeea5SJeff Kirsher * round-trip latency and reducing overhead. 161874aeea5SJeff Kirsher */ 162874aeea5SJeff Kirsher static unsigned int rx_irq_mod_usec = 60; 163874aeea5SJeff Kirsher 164874aeea5SJeff Kirsher /* Initial interrupt moderation settings. They can be modified after 165874aeea5SJeff Kirsher * module load with ethtool. 166874aeea5SJeff Kirsher * 167874aeea5SJeff Kirsher * This default is chosen to ensure that a 10G link does not go idle 168874aeea5SJeff Kirsher * while a TX queue is stopped after it has become full. A queue is 169874aeea5SJeff Kirsher * restarted when it drops below half full. The time this takes (assuming 170874aeea5SJeff Kirsher * worst case 3 descriptors per packet and 1024 descriptors) is 171874aeea5SJeff Kirsher * 512 / 3 * 1.2 = 205 usec. 172874aeea5SJeff Kirsher */ 173874aeea5SJeff Kirsher static unsigned int tx_irq_mod_usec = 150; 174874aeea5SJeff Kirsher 175874aeea5SJeff Kirsher /* This is the first interrupt mode to try out of: 176874aeea5SJeff Kirsher * 0 => MSI-X 177874aeea5SJeff Kirsher * 1 => MSI 178874aeea5SJeff Kirsher * 2 => legacy 179874aeea5SJeff Kirsher */ 180874aeea5SJeff Kirsher static unsigned int interrupt_mode; 181874aeea5SJeff Kirsher 182874aeea5SJeff Kirsher /* This is the requested number of CPUs to use for Receive-Side Scaling (RSS), 183874aeea5SJeff Kirsher * i.e. the number of CPUs among which we may distribute simultaneous 184874aeea5SJeff Kirsher * interrupt handling. 185874aeea5SJeff Kirsher * 186874aeea5SJeff Kirsher * Cards without MSI-X will only target one CPU via legacy or MSI interrupt. 187cdb08f8fSBen Hutchings * The default (0) means to assign an interrupt to each core. 188874aeea5SJeff Kirsher */ 189874aeea5SJeff Kirsher static unsigned int rss_cpus; 190874aeea5SJeff Kirsher module_param(rss_cpus, uint, 0444); 191874aeea5SJeff Kirsher MODULE_PARM_DESC(rss_cpus, "Number of CPUs to use for Receive-Side Scaling"); 192874aeea5SJeff Kirsher 193b9cc977dSBen Hutchings static bool phy_flash_cfg; 194b9cc977dSBen Hutchings module_param(phy_flash_cfg, bool, 0644); 195874aeea5SJeff Kirsher MODULE_PARM_DESC(phy_flash_cfg, "Set PHYs into reflash mode initially"); 196874aeea5SJeff Kirsher 197e7bed9c8SBen Hutchings static unsigned irq_adapt_low_thresh = 8000; 198874aeea5SJeff Kirsher module_param(irq_adapt_low_thresh, uint, 0644); 199874aeea5SJeff Kirsher MODULE_PARM_DESC(irq_adapt_low_thresh, 200874aeea5SJeff Kirsher "Threshold score for reducing IRQ moderation"); 201874aeea5SJeff Kirsher 202e7bed9c8SBen Hutchings static unsigned irq_adapt_high_thresh = 16000; 203874aeea5SJeff Kirsher module_param(irq_adapt_high_thresh, uint, 0644); 204874aeea5SJeff Kirsher MODULE_PARM_DESC(irq_adapt_high_thresh, 205874aeea5SJeff Kirsher "Threshold score for increasing IRQ moderation"); 206874aeea5SJeff Kirsher 207874aeea5SJeff Kirsher static unsigned debug = (NETIF_MSG_DRV | NETIF_MSG_PROBE | 208874aeea5SJeff Kirsher NETIF_MSG_LINK | NETIF_MSG_IFDOWN | 209874aeea5SJeff Kirsher NETIF_MSG_IFUP | NETIF_MSG_RX_ERR | 210874aeea5SJeff Kirsher NETIF_MSG_TX_ERR | NETIF_MSG_HW); 211874aeea5SJeff Kirsher module_param(debug, uint, 0); 212874aeea5SJeff Kirsher MODULE_PARM_DESC(debug, "Bitmapped debugging message enable value"); 213874aeea5SJeff Kirsher 214874aeea5SJeff Kirsher /************************************************************************** 215874aeea5SJeff Kirsher * 216874aeea5SJeff Kirsher * Utility functions and prototypes 217874aeea5SJeff Kirsher * 218874aeea5SJeff Kirsher *************************************************************************/ 219874aeea5SJeff Kirsher 220261e4d96SJon Cooper static int efx_soft_enable_interrupts(struct efx_nic *efx); 221d8291187SBen Hutchings static void efx_soft_disable_interrupts(struct efx_nic *efx); 2227f967c01SBen Hutchings static void efx_remove_channel(struct efx_channel *channel); 223874aeea5SJeff Kirsher static void efx_remove_channels(struct efx_nic *efx); 2247f967c01SBen Hutchings static const struct efx_channel_type efx_default_channel_type; 225874aeea5SJeff Kirsher static void efx_remove_port(struct efx_nic *efx); 2267f967c01SBen Hutchings static void efx_init_napi_channel(struct efx_channel *channel); 227874aeea5SJeff Kirsher static void efx_fini_napi(struct efx_nic *efx); 228874aeea5SJeff Kirsher static void efx_fini_napi_channel(struct efx_channel *channel); 229874aeea5SJeff Kirsher static void efx_fini_struct(struct efx_nic *efx); 230874aeea5SJeff Kirsher static void efx_start_all(struct efx_nic *efx); 231874aeea5SJeff Kirsher static void efx_stop_all(struct efx_nic *efx); 232874aeea5SJeff Kirsher 233874aeea5SJeff Kirsher #define EFX_ASSERT_RESET_SERIALISED(efx) \ 234874aeea5SJeff Kirsher do { \ 235f16aeea0SBen Hutchings if ((efx->state == STATE_READY) || \ 236626950dbSAlexandre Rames (efx->state == STATE_RECOVERY) || \ 237874aeea5SJeff Kirsher (efx->state == STATE_DISABLED)) \ 238874aeea5SJeff Kirsher ASSERT_RTNL(); \ 239874aeea5SJeff Kirsher } while (0) 240874aeea5SJeff Kirsher 2418b7325b4SBen Hutchings static int efx_check_disabled(struct efx_nic *efx) 2428b7325b4SBen Hutchings { 243626950dbSAlexandre Rames if (efx->state == STATE_DISABLED || efx->state == STATE_RECOVERY) { 2448b7325b4SBen Hutchings netif_err(efx, drv, efx->net_dev, 2458b7325b4SBen Hutchings "device is disabled due to earlier errors\n"); 2468b7325b4SBen Hutchings return -EIO; 2478b7325b4SBen Hutchings } 2488b7325b4SBen Hutchings return 0; 2498b7325b4SBen Hutchings } 2508b7325b4SBen Hutchings 251874aeea5SJeff Kirsher /************************************************************************** 252874aeea5SJeff Kirsher * 253874aeea5SJeff Kirsher * Event queue processing 254874aeea5SJeff Kirsher * 255874aeea5SJeff Kirsher *************************************************************************/ 256874aeea5SJeff Kirsher 257874aeea5SJeff Kirsher /* Process channel's event queue 258874aeea5SJeff Kirsher * 259874aeea5SJeff Kirsher * This function is responsible for processing the event queue of a 260874aeea5SJeff Kirsher * single channel. The caller must guarantee that this function will 261874aeea5SJeff Kirsher * never be concurrently called more than once on the same channel, 262874aeea5SJeff Kirsher * though different channels may be being processed concurrently. 263874aeea5SJeff Kirsher */ 264874aeea5SJeff Kirsher static int efx_process_channel(struct efx_channel *channel, int budget) 265874aeea5SJeff Kirsher { 266c936835cSPeter Dunning struct efx_tx_queue *tx_queue; 267874aeea5SJeff Kirsher int spent; 268874aeea5SJeff Kirsher 2699f2cb71cSBen Hutchings if (unlikely(!channel->enabled)) 270874aeea5SJeff Kirsher return 0; 271874aeea5SJeff Kirsher 272c936835cSPeter Dunning efx_for_each_channel_tx_queue(tx_queue, channel) { 273c936835cSPeter Dunning tx_queue->pkts_compl = 0; 274c936835cSPeter Dunning tx_queue->bytes_compl = 0; 275c936835cSPeter Dunning } 276c936835cSPeter Dunning 277874aeea5SJeff Kirsher spent = efx_nic_process_eventq(channel, budget); 278d9ab7007SBen Hutchings if (spent && efx_channel_has_rx_queue(channel)) { 279d9ab7007SBen Hutchings struct efx_rx_queue *rx_queue = 280d9ab7007SBen Hutchings efx_channel_get_rx_queue(channel); 281874aeea5SJeff Kirsher 282ff734ef4SBen Hutchings efx_rx_flush_packet(channel); 283cce28794SJon Cooper efx_fast_push_rx_descriptors(rx_queue, true); 284d9ab7007SBen Hutchings } 285874aeea5SJeff Kirsher 286c936835cSPeter Dunning /* Update BQL */ 287c936835cSPeter Dunning efx_for_each_channel_tx_queue(tx_queue, channel) { 288c936835cSPeter Dunning if (tx_queue->bytes_compl) { 289c936835cSPeter Dunning netdev_tx_completed_queue(tx_queue->core_txq, 290c936835cSPeter Dunning tx_queue->pkts_compl, tx_queue->bytes_compl); 291c936835cSPeter Dunning } 292c936835cSPeter Dunning } 293c936835cSPeter Dunning 294874aeea5SJeff Kirsher return spent; 295874aeea5SJeff Kirsher } 296874aeea5SJeff Kirsher 297874aeea5SJeff Kirsher /* NAPI poll handler 298874aeea5SJeff Kirsher * 299874aeea5SJeff Kirsher * NAPI guarantees serialisation of polls of the same device, which 300874aeea5SJeff Kirsher * provides the guarantee required by efx_process_channel(). 301874aeea5SJeff Kirsher */ 302539de7c5SBert Kenward static void efx_update_irq_mod(struct efx_nic *efx, struct efx_channel *channel) 303539de7c5SBert Kenward { 304539de7c5SBert Kenward int step = efx->irq_mod_step_us; 305539de7c5SBert Kenward 306539de7c5SBert Kenward if (channel->irq_mod_score < irq_adapt_low_thresh) { 307539de7c5SBert Kenward if (channel->irq_moderation_us > step) { 308539de7c5SBert Kenward channel->irq_moderation_us -= step; 309539de7c5SBert Kenward efx->type->push_irq_moderation(channel); 310539de7c5SBert Kenward } 311539de7c5SBert Kenward } else if (channel->irq_mod_score > irq_adapt_high_thresh) { 312539de7c5SBert Kenward if (channel->irq_moderation_us < 313539de7c5SBert Kenward efx->irq_rx_moderation_us) { 314539de7c5SBert Kenward channel->irq_moderation_us += step; 315539de7c5SBert Kenward efx->type->push_irq_moderation(channel); 316539de7c5SBert Kenward } 317539de7c5SBert Kenward } 318539de7c5SBert Kenward 319539de7c5SBert Kenward channel->irq_count = 0; 320539de7c5SBert Kenward channel->irq_mod_score = 0; 321539de7c5SBert Kenward } 322539de7c5SBert Kenward 323874aeea5SJeff Kirsher static int efx_poll(struct napi_struct *napi, int budget) 324874aeea5SJeff Kirsher { 325874aeea5SJeff Kirsher struct efx_channel *channel = 326874aeea5SJeff Kirsher container_of(napi, struct efx_channel, napi_str); 327874aeea5SJeff Kirsher struct efx_nic *efx = channel->efx; 328874aeea5SJeff Kirsher int spent; 329874aeea5SJeff Kirsher 330874aeea5SJeff Kirsher netif_vdbg(efx, intr, efx->net_dev, 331874aeea5SJeff Kirsher "channel %d NAPI poll executing on CPU %d\n", 332874aeea5SJeff Kirsher channel->channel, raw_smp_processor_id()); 333874aeea5SJeff Kirsher 334874aeea5SJeff Kirsher spent = efx_process_channel(channel, budget); 335874aeea5SJeff Kirsher 336874aeea5SJeff Kirsher if (spent < budget) { 3379d9a6973SBen Hutchings if (efx_channel_has_rx_queue(channel) && 338874aeea5SJeff Kirsher efx->irq_rx_adaptive && 339874aeea5SJeff Kirsher unlikely(++channel->irq_count == 1000)) { 340539de7c5SBert Kenward efx_update_irq_mod(efx, channel); 341874aeea5SJeff Kirsher } 342874aeea5SJeff Kirsher 343874aeea5SJeff Kirsher efx_filter_rfs_expire(channel); 344874aeea5SJeff Kirsher 345874aeea5SJeff Kirsher /* There is no race here; although napi_disable() will 346874aeea5SJeff Kirsher * only wait for napi_complete(), this isn't a problem 347514bedbcSBen Hutchings * since efx_nic_eventq_read_ack() will have no effect if 348874aeea5SJeff Kirsher * interrupts have already been disabled. 349874aeea5SJeff Kirsher */ 350f820c0acSBert Kenward if (napi_complete_done(napi, spent)) 351514bedbcSBen Hutchings efx_nic_eventq_read_ack(channel); 352874aeea5SJeff Kirsher } 353874aeea5SJeff Kirsher 354874aeea5SJeff Kirsher return spent; 355874aeea5SJeff Kirsher } 356874aeea5SJeff Kirsher 357874aeea5SJeff Kirsher /* Create event queue 358874aeea5SJeff Kirsher * Event queue memory allocations are done only once. If the channel 359874aeea5SJeff Kirsher * is reset, the memory buffer will be reused; this guards against 360874aeea5SJeff Kirsher * errors during channel reset and also simplifies interrupt handling. 361874aeea5SJeff Kirsher */ 362874aeea5SJeff Kirsher static int efx_probe_eventq(struct efx_channel *channel) 363874aeea5SJeff Kirsher { 364874aeea5SJeff Kirsher struct efx_nic *efx = channel->efx; 365874aeea5SJeff Kirsher unsigned long entries; 366874aeea5SJeff Kirsher 36786ee5302SBen Hutchings netif_dbg(efx, probe, efx->net_dev, 368874aeea5SJeff Kirsher "chan %d create event queue\n", channel->channel); 369874aeea5SJeff Kirsher 370874aeea5SJeff Kirsher /* Build an event queue with room for one event per tx and rx buffer, 371874aeea5SJeff Kirsher * plus some extra for link state events and MCDI completions. */ 372874aeea5SJeff Kirsher entries = roundup_pow_of_two(efx->rxq_entries + efx->txq_entries + 128); 373e01b16a7SEdward Cree EFX_WARN_ON_PARANOID(entries > EFX_MAX_EVQ_SIZE); 374874aeea5SJeff Kirsher channel->eventq_mask = max(entries, EFX_MIN_EVQ_SIZE) - 1; 375874aeea5SJeff Kirsher 376874aeea5SJeff Kirsher return efx_nic_probe_eventq(channel); 377874aeea5SJeff Kirsher } 378874aeea5SJeff Kirsher 379874aeea5SJeff Kirsher /* Prepare channel's event queue */ 380261e4d96SJon Cooper static int efx_init_eventq(struct efx_channel *channel) 381874aeea5SJeff Kirsher { 38215acb1ceSBen Hutchings struct efx_nic *efx = channel->efx; 383261e4d96SJon Cooper int rc; 384261e4d96SJon Cooper 385261e4d96SJon Cooper EFX_WARN_ON_PARANOID(channel->eventq_init); 386261e4d96SJon Cooper 38715acb1ceSBen Hutchings netif_dbg(efx, drv, efx->net_dev, 388874aeea5SJeff Kirsher "chan %d init event queue\n", channel->channel); 389874aeea5SJeff Kirsher 390261e4d96SJon Cooper rc = efx_nic_init_eventq(channel); 391261e4d96SJon Cooper if (rc == 0) { 39215acb1ceSBen Hutchings efx->type->push_irq_moderation(channel); 393874aeea5SJeff Kirsher channel->eventq_read_ptr = 0; 394be3fc09cSBen Hutchings channel->eventq_init = true; 395874aeea5SJeff Kirsher } 396261e4d96SJon Cooper return rc; 397261e4d96SJon Cooper } 398874aeea5SJeff Kirsher 3999f2cb71cSBen Hutchings /* Enable event queue processing and NAPI */ 40036763266SAlexandre Rames void efx_start_eventq(struct efx_channel *channel) 4019f2cb71cSBen Hutchings { 4029f2cb71cSBen Hutchings netif_dbg(channel->efx, ifup, channel->efx->net_dev, 4039f2cb71cSBen Hutchings "chan %d start event queue\n", channel->channel); 4049f2cb71cSBen Hutchings 405514bedbcSBen Hutchings /* Make sure the NAPI handler sees the enabled flag set */ 4069f2cb71cSBen Hutchings channel->enabled = true; 4079f2cb71cSBen Hutchings smp_wmb(); 4089f2cb71cSBen Hutchings 4099f2cb71cSBen Hutchings napi_enable(&channel->napi_str); 4109f2cb71cSBen Hutchings efx_nic_eventq_read_ack(channel); 4119f2cb71cSBen Hutchings } 4129f2cb71cSBen Hutchings 4139f2cb71cSBen Hutchings /* Disable event queue processing and NAPI */ 41436763266SAlexandre Rames void efx_stop_eventq(struct efx_channel *channel) 4159f2cb71cSBen Hutchings { 4169f2cb71cSBen Hutchings if (!channel->enabled) 4179f2cb71cSBen Hutchings return; 4189f2cb71cSBen Hutchings 4199f2cb71cSBen Hutchings napi_disable(&channel->napi_str); 4209f2cb71cSBen Hutchings channel->enabled = false; 4219f2cb71cSBen Hutchings } 4229f2cb71cSBen Hutchings 423874aeea5SJeff Kirsher static void efx_fini_eventq(struct efx_channel *channel) 424874aeea5SJeff Kirsher { 425be3fc09cSBen Hutchings if (!channel->eventq_init) 426be3fc09cSBen Hutchings return; 427be3fc09cSBen Hutchings 428874aeea5SJeff Kirsher netif_dbg(channel->efx, drv, channel->efx->net_dev, 429874aeea5SJeff Kirsher "chan %d fini event queue\n", channel->channel); 430874aeea5SJeff Kirsher 431874aeea5SJeff Kirsher efx_nic_fini_eventq(channel); 432be3fc09cSBen Hutchings channel->eventq_init = false; 433874aeea5SJeff Kirsher } 434874aeea5SJeff Kirsher 435874aeea5SJeff Kirsher static void efx_remove_eventq(struct efx_channel *channel) 436874aeea5SJeff Kirsher { 437874aeea5SJeff Kirsher netif_dbg(channel->efx, drv, channel->efx->net_dev, 438874aeea5SJeff Kirsher "chan %d remove event queue\n", channel->channel); 439874aeea5SJeff Kirsher 440874aeea5SJeff Kirsher efx_nic_remove_eventq(channel); 441874aeea5SJeff Kirsher } 442874aeea5SJeff Kirsher 443874aeea5SJeff Kirsher /************************************************************************** 444874aeea5SJeff Kirsher * 445874aeea5SJeff Kirsher * Channel handling 446874aeea5SJeff Kirsher * 447874aeea5SJeff Kirsher *************************************************************************/ 448874aeea5SJeff Kirsher 4497f967c01SBen Hutchings /* Allocate and initialise a channel structure. */ 450874aeea5SJeff Kirsher static struct efx_channel * 451874aeea5SJeff Kirsher efx_alloc_channel(struct efx_nic *efx, int i, struct efx_channel *old_channel) 452874aeea5SJeff Kirsher { 453874aeea5SJeff Kirsher struct efx_channel *channel; 454874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 455874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 456874aeea5SJeff Kirsher int j; 457874aeea5SJeff Kirsher 4587f967c01SBen Hutchings channel = kzalloc(sizeof(*channel), GFP_KERNEL); 4597f967c01SBen Hutchings if (!channel) 4607f967c01SBen Hutchings return NULL; 4617f967c01SBen Hutchings 4627f967c01SBen Hutchings channel->efx = efx; 4637f967c01SBen Hutchings channel->channel = i; 4647f967c01SBen Hutchings channel->type = &efx_default_channel_type; 4657f967c01SBen Hutchings 4667f967c01SBen Hutchings for (j = 0; j < EFX_TXQ_TYPES; j++) { 4677f967c01SBen Hutchings tx_queue = &channel->tx_queue[j]; 4687f967c01SBen Hutchings tx_queue->efx = efx; 4697f967c01SBen Hutchings tx_queue->queue = i * EFX_TXQ_TYPES + j; 4707f967c01SBen Hutchings tx_queue->channel = channel; 4717f967c01SBen Hutchings } 4727f967c01SBen Hutchings 4737f967c01SBen Hutchings rx_queue = &channel->rx_queue; 4747f967c01SBen Hutchings rx_queue->efx = efx; 4757aa1402eSKees Cook timer_setup(&rx_queue->slow_fill, efx_rx_slow_fill, 0); 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)); 5147aa1402eSKees Cook timer_setup(&rx_queue->slow_fill, efx_rx_slow_fill, 0); 515874aeea5SJeff Kirsher 516874aeea5SJeff Kirsher return channel; 517874aeea5SJeff Kirsher } 518874aeea5SJeff Kirsher 519874aeea5SJeff Kirsher static int efx_probe_channel(struct efx_channel *channel) 520874aeea5SJeff Kirsher { 521874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 522874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 523874aeea5SJeff Kirsher int rc; 524874aeea5SJeff Kirsher 525874aeea5SJeff Kirsher netif_dbg(channel->efx, probe, channel->efx->net_dev, 526874aeea5SJeff Kirsher "creating channel %d\n", channel->channel); 527874aeea5SJeff Kirsher 5287f967c01SBen Hutchings rc = channel->type->pre_probe(channel); 5297f967c01SBen Hutchings if (rc) 5307f967c01SBen Hutchings goto fail; 5317f967c01SBen Hutchings 532874aeea5SJeff Kirsher rc = efx_probe_eventq(channel); 533874aeea5SJeff Kirsher if (rc) 5347f967c01SBen Hutchings goto fail; 535874aeea5SJeff Kirsher 536874aeea5SJeff Kirsher efx_for_each_channel_tx_queue(tx_queue, channel) { 537874aeea5SJeff Kirsher rc = efx_probe_tx_queue(tx_queue); 538874aeea5SJeff Kirsher if (rc) 5397f967c01SBen Hutchings goto fail; 540874aeea5SJeff Kirsher } 541874aeea5SJeff Kirsher 542874aeea5SJeff Kirsher efx_for_each_channel_rx_queue(rx_queue, channel) { 543874aeea5SJeff Kirsher rc = efx_probe_rx_queue(rx_queue); 544874aeea5SJeff Kirsher if (rc) 5457f967c01SBen Hutchings goto fail; 546874aeea5SJeff Kirsher } 547874aeea5SJeff Kirsher 548874aeea5SJeff Kirsher return 0; 549874aeea5SJeff Kirsher 5507f967c01SBen Hutchings fail: 5517f967c01SBen Hutchings efx_remove_channel(channel); 552874aeea5SJeff Kirsher return rc; 553874aeea5SJeff Kirsher } 554874aeea5SJeff Kirsher 5557f967c01SBen Hutchings static void 5567f967c01SBen Hutchings efx_get_channel_name(struct efx_channel *channel, char *buf, size_t len) 5577f967c01SBen Hutchings { 5587f967c01SBen Hutchings struct efx_nic *efx = channel->efx; 5597f967c01SBen Hutchings const char *type; 5607f967c01SBen Hutchings int number; 5617f967c01SBen Hutchings 5627f967c01SBen Hutchings number = channel->channel; 5637f967c01SBen Hutchings if (efx->tx_channel_offset == 0) { 5647f967c01SBen Hutchings type = ""; 5657f967c01SBen Hutchings } else if (channel->channel < efx->tx_channel_offset) { 5667f967c01SBen Hutchings type = "-rx"; 5677f967c01SBen Hutchings } else { 5687f967c01SBen Hutchings type = "-tx"; 5697f967c01SBen Hutchings number -= efx->tx_channel_offset; 5707f967c01SBen Hutchings } 5717f967c01SBen Hutchings snprintf(buf, len, "%s%s-%d", efx->name, type, number); 5727f967c01SBen Hutchings } 573874aeea5SJeff Kirsher 574874aeea5SJeff Kirsher static void efx_set_channel_names(struct efx_nic *efx) 575874aeea5SJeff Kirsher { 576874aeea5SJeff Kirsher struct efx_channel *channel; 577874aeea5SJeff Kirsher 5787f967c01SBen Hutchings efx_for_each_channel(channel, efx) 5797f967c01SBen Hutchings channel->type->get_name(channel, 580d8291187SBen Hutchings efx->msi_context[channel->channel].name, 581d8291187SBen Hutchings sizeof(efx->msi_context[0].name)); 582874aeea5SJeff Kirsher } 583874aeea5SJeff Kirsher 584874aeea5SJeff Kirsher static int efx_probe_channels(struct efx_nic *efx) 585874aeea5SJeff Kirsher { 586874aeea5SJeff Kirsher struct efx_channel *channel; 587874aeea5SJeff Kirsher int rc; 588874aeea5SJeff Kirsher 589874aeea5SJeff Kirsher /* Restart special buffer allocation */ 590874aeea5SJeff Kirsher efx->next_buffer_table = 0; 591874aeea5SJeff Kirsher 592c92aaff1SBen Hutchings /* Probe channels in reverse, so that any 'extra' channels 593c92aaff1SBen Hutchings * use the start of the buffer table. This allows the traffic 594c92aaff1SBen Hutchings * channels to be resized without moving them or wasting the 595c92aaff1SBen Hutchings * entries before them. 596c92aaff1SBen Hutchings */ 597c92aaff1SBen Hutchings efx_for_each_channel_rev(channel, efx) { 598874aeea5SJeff Kirsher rc = efx_probe_channel(channel); 599874aeea5SJeff Kirsher if (rc) { 600874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 601874aeea5SJeff Kirsher "failed to create channel %d\n", 602874aeea5SJeff Kirsher channel->channel); 603874aeea5SJeff Kirsher goto fail; 604874aeea5SJeff Kirsher } 605874aeea5SJeff Kirsher } 606874aeea5SJeff Kirsher efx_set_channel_names(efx); 607874aeea5SJeff Kirsher 608874aeea5SJeff Kirsher return 0; 609874aeea5SJeff Kirsher 610874aeea5SJeff Kirsher fail: 611874aeea5SJeff Kirsher efx_remove_channels(efx); 612874aeea5SJeff Kirsher return rc; 613874aeea5SJeff Kirsher } 614874aeea5SJeff Kirsher 615874aeea5SJeff Kirsher /* Channels are shutdown and reinitialised whilst the NIC is running 616874aeea5SJeff Kirsher * to propagate configuration changes (mtu, checksum offload), or 617874aeea5SJeff Kirsher * to clear hardware error conditions 618874aeea5SJeff Kirsher */ 6199f2cb71cSBen Hutchings static void efx_start_datapath(struct efx_nic *efx) 620874aeea5SJeff Kirsher { 621ebfcd0fdSAndrew Rybchenko netdev_features_t old_features = efx->net_dev->features; 62285740cdfSBen Hutchings bool old_rx_scatter = efx->rx_scatter; 623874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 624874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 625874aeea5SJeff Kirsher struct efx_channel *channel; 62685740cdfSBen Hutchings size_t rx_buf_len; 627874aeea5SJeff Kirsher 628874aeea5SJeff Kirsher /* Calculate the rx buffer allocation parameters required to 629874aeea5SJeff Kirsher * support the current MTU, including padding for header 630874aeea5SJeff Kirsher * alignment and overruns. 631874aeea5SJeff Kirsher */ 63243a3739dSJon Cooper efx->rx_dma_len = (efx->rx_prefix_size + 633874aeea5SJeff Kirsher EFX_MAX_FRAME_LEN(efx->net_dev->mtu) + 634874aeea5SJeff Kirsher efx->type->rx_buffer_padding); 63585740cdfSBen Hutchings rx_buf_len = (sizeof(struct efx_rx_page_state) + 6362ec03014SAndrew Rybchenko efx->rx_ip_align + efx->rx_dma_len); 63785740cdfSBen Hutchings if (rx_buf_len <= PAGE_SIZE) { 638e8c68c0aSJon Cooper efx->rx_scatter = efx->type->always_rx_scatter; 63985740cdfSBen Hutchings efx->rx_buffer_order = 0; 64085740cdfSBen Hutchings } else if (efx->type->can_rx_scatter) { 641950c54dfSBen Hutchings BUILD_BUG_ON(EFX_RX_USR_BUF_SIZE % L1_CACHE_BYTES); 64285740cdfSBen Hutchings BUILD_BUG_ON(sizeof(struct efx_rx_page_state) + 643950c54dfSBen Hutchings 2 * ALIGN(NET_IP_ALIGN + EFX_RX_USR_BUF_SIZE, 644950c54dfSBen Hutchings EFX_RX_BUF_ALIGNMENT) > 645950c54dfSBen Hutchings PAGE_SIZE); 64685740cdfSBen Hutchings efx->rx_scatter = true; 64785740cdfSBen Hutchings efx->rx_dma_len = EFX_RX_USR_BUF_SIZE; 64885740cdfSBen Hutchings efx->rx_buffer_order = 0; 64985740cdfSBen Hutchings } else { 65085740cdfSBen Hutchings efx->rx_scatter = false; 65185740cdfSBen Hutchings efx->rx_buffer_order = get_order(rx_buf_len); 65285740cdfSBen Hutchings } 65385740cdfSBen Hutchings 6541648a23fSDaniel Pieczko efx_rx_config_page_split(efx); 6551648a23fSDaniel Pieczko if (efx->rx_buffer_order) 6561648a23fSDaniel Pieczko netif_dbg(efx, drv, efx->net_dev, 6571648a23fSDaniel Pieczko "RX buf len=%u; page order=%u batch=%u\n", 6581648a23fSDaniel Pieczko efx->rx_dma_len, efx->rx_buffer_order, 6591648a23fSDaniel Pieczko efx->rx_pages_per_batch); 6601648a23fSDaniel Pieczko else 6611648a23fSDaniel Pieczko netif_dbg(efx, drv, efx->net_dev, 6621648a23fSDaniel Pieczko "RX buf len=%u step=%u bpp=%u; page batch=%u\n", 6631648a23fSDaniel Pieczko efx->rx_dma_len, efx->rx_page_buf_step, 6641648a23fSDaniel Pieczko efx->rx_bufs_per_page, efx->rx_pages_per_batch); 6652768935aSDaniel Pieczko 666ebfcd0fdSAndrew Rybchenko /* Restore previously fixed features in hw_features and remove 667ebfcd0fdSAndrew Rybchenko * features which are fixed now 668ebfcd0fdSAndrew Rybchenko */ 669ebfcd0fdSAndrew Rybchenko efx->net_dev->hw_features |= efx->net_dev->features; 670ebfcd0fdSAndrew Rybchenko efx->net_dev->hw_features &= ~efx->fixed_features; 671ebfcd0fdSAndrew Rybchenko efx->net_dev->features |= efx->fixed_features; 672ebfcd0fdSAndrew Rybchenko if (efx->net_dev->features != old_features) 673ebfcd0fdSAndrew Rybchenko netdev_features_change(efx->net_dev); 674ebfcd0fdSAndrew Rybchenko 675e8c68c0aSJon Cooper /* RX filters may also have scatter-enabled flags */ 67685740cdfSBen Hutchings if (efx->rx_scatter != old_rx_scatter) 677add72477SBen Hutchings efx->type->filter_update_rx_scatter(efx); 678874aeea5SJeff Kirsher 67914bf718fSBen Hutchings /* We must keep at least one descriptor in a TX ring empty. 68014bf718fSBen Hutchings * We could avoid this when the queue size does not exactly 68114bf718fSBen Hutchings * match the hardware ring size, but it's not that important. 68214bf718fSBen Hutchings * Therefore we stop the queue when one more skb might fill 68314bf718fSBen Hutchings * the ring completely. We wake it when half way back to 68414bf718fSBen Hutchings * empty. 68514bf718fSBen Hutchings */ 68614bf718fSBen Hutchings efx->txq_stop_thresh = efx->txq_entries - efx_tx_max_skb_descs(efx); 68714bf718fSBen Hutchings efx->txq_wake_thresh = efx->txq_stop_thresh / 2; 68814bf718fSBen Hutchings 689874aeea5SJeff Kirsher /* Initialise the channels */ 690874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 6913881d8abSAlexandre Rames efx_for_each_channel_tx_queue(tx_queue, channel) { 692874aeea5SJeff Kirsher efx_init_tx_queue(tx_queue); 6933881d8abSAlexandre Rames atomic_inc(&efx->active_queues); 6943881d8abSAlexandre Rames } 695874aeea5SJeff Kirsher 6969f2cb71cSBen Hutchings efx_for_each_channel_rx_queue(rx_queue, channel) { 697874aeea5SJeff Kirsher efx_init_rx_queue(rx_queue); 6983881d8abSAlexandre Rames atomic_inc(&efx->active_queues); 699cce28794SJon Cooper efx_stop_eventq(channel); 700cce28794SJon Cooper efx_fast_push_rx_descriptors(rx_queue, false); 701cce28794SJon Cooper efx_start_eventq(channel); 7029f2cb71cSBen Hutchings } 703874aeea5SJeff Kirsher 70485740cdfSBen Hutchings WARN_ON(channel->rx_pkt_n_frags); 705874aeea5SJeff Kirsher } 7069f2cb71cSBen Hutchings 7072ea4dc28SAlexandre Rames efx_ptp_start_datapath(efx); 7082ea4dc28SAlexandre Rames 7099f2cb71cSBen Hutchings if (netif_device_present(efx->net_dev)) 7109f2cb71cSBen Hutchings netif_tx_wake_all_queues(efx->net_dev); 711874aeea5SJeff Kirsher } 712874aeea5SJeff Kirsher 7139f2cb71cSBen Hutchings static void efx_stop_datapath(struct efx_nic *efx) 714874aeea5SJeff Kirsher { 715874aeea5SJeff Kirsher struct efx_channel *channel; 716874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 717874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 718874aeea5SJeff Kirsher int rc; 719874aeea5SJeff Kirsher 720874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 721874aeea5SJeff Kirsher BUG_ON(efx->port_enabled); 722874aeea5SJeff Kirsher 7232ea4dc28SAlexandre Rames efx_ptp_stop_datapath(efx); 7242ea4dc28SAlexandre Rames 725d8aec745SBen Hutchings /* Stop RX refill */ 726d8aec745SBen Hutchings efx_for_each_channel(channel, efx) { 727d8aec745SBen Hutchings efx_for_each_channel_rx_queue(rx_queue, channel) 728d8aec745SBen Hutchings rx_queue->refill_enabled = false; 729d8aec745SBen Hutchings } 730d8aec745SBen Hutchings 731874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 7329f2cb71cSBen Hutchings /* RX packet processing is pipelined, so wait for the 7339f2cb71cSBen Hutchings * NAPI handler to complete. At least event queue 0 7349f2cb71cSBen Hutchings * might be kept active by non-data events, so don't 7359f2cb71cSBen Hutchings * use napi_synchronize() but actually disable NAPI 7369f2cb71cSBen Hutchings * temporarily. 7379f2cb71cSBen Hutchings */ 7389f2cb71cSBen Hutchings if (efx_channel_has_rx_queue(channel)) { 7399f2cb71cSBen Hutchings efx_stop_eventq(channel); 7409f2cb71cSBen Hutchings efx_start_eventq(channel); 7419f2cb71cSBen Hutchings } 742e42c3d85SBen Hutchings } 743874aeea5SJeff Kirsher 744e42c3d85SBen Hutchings rc = efx->type->fini_dmaq(efx); 7455a6681e2SEdward Cree if (rc) { 746e42c3d85SBen Hutchings netif_err(efx, drv, efx->net_dev, "failed to flush queues\n"); 747e42c3d85SBen Hutchings } else { 748e42c3d85SBen Hutchings netif_dbg(efx, drv, efx->net_dev, 749e42c3d85SBen Hutchings "successfully flushed all queues\n"); 750e42c3d85SBen Hutchings } 751e42c3d85SBen Hutchings 752e42c3d85SBen Hutchings efx_for_each_channel(channel, efx) { 753874aeea5SJeff Kirsher efx_for_each_channel_rx_queue(rx_queue, channel) 754874aeea5SJeff Kirsher efx_fini_rx_queue(rx_queue); 755874aeea5SJeff Kirsher efx_for_each_possible_channel_tx_queue(tx_queue, channel) 756874aeea5SJeff Kirsher efx_fini_tx_queue(tx_queue); 757874aeea5SJeff Kirsher } 758874aeea5SJeff Kirsher } 759874aeea5SJeff Kirsher 760874aeea5SJeff Kirsher static void efx_remove_channel(struct efx_channel *channel) 761874aeea5SJeff Kirsher { 762874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 763874aeea5SJeff Kirsher struct efx_rx_queue *rx_queue; 764874aeea5SJeff Kirsher 765874aeea5SJeff Kirsher netif_dbg(channel->efx, drv, channel->efx->net_dev, 766874aeea5SJeff Kirsher "destroy chan %d\n", channel->channel); 767874aeea5SJeff Kirsher 768874aeea5SJeff Kirsher efx_for_each_channel_rx_queue(rx_queue, channel) 769874aeea5SJeff Kirsher efx_remove_rx_queue(rx_queue); 770874aeea5SJeff Kirsher efx_for_each_possible_channel_tx_queue(tx_queue, channel) 771874aeea5SJeff Kirsher efx_remove_tx_queue(tx_queue); 772874aeea5SJeff Kirsher efx_remove_eventq(channel); 773c31e5f9fSStuart Hodgson channel->type->post_remove(channel); 774874aeea5SJeff Kirsher } 775874aeea5SJeff Kirsher 776874aeea5SJeff Kirsher static void efx_remove_channels(struct efx_nic *efx) 777874aeea5SJeff Kirsher { 778874aeea5SJeff Kirsher struct efx_channel *channel; 779874aeea5SJeff Kirsher 780874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) 781874aeea5SJeff Kirsher efx_remove_channel(channel); 782874aeea5SJeff Kirsher } 783874aeea5SJeff Kirsher 784874aeea5SJeff Kirsher int 785874aeea5SJeff Kirsher efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries) 786874aeea5SJeff Kirsher { 787874aeea5SJeff Kirsher struct efx_channel *other_channel[EFX_MAX_CHANNELS], *channel; 788874aeea5SJeff Kirsher u32 old_rxq_entries, old_txq_entries; 7897f967c01SBen Hutchings unsigned i, next_buffer_table = 0; 790261e4d96SJon Cooper int rc, rc2; 7918b7325b4SBen Hutchings 7928b7325b4SBen Hutchings rc = efx_check_disabled(efx); 7938b7325b4SBen Hutchings if (rc) 7948b7325b4SBen Hutchings return rc; 7957f967c01SBen Hutchings 7967f967c01SBen Hutchings /* Not all channels should be reallocated. We must avoid 7977f967c01SBen Hutchings * reallocating their buffer table entries. 7987f967c01SBen Hutchings */ 7997f967c01SBen Hutchings efx_for_each_channel(channel, efx) { 8007f967c01SBen Hutchings struct efx_rx_queue *rx_queue; 8017f967c01SBen Hutchings struct efx_tx_queue *tx_queue; 8027f967c01SBen Hutchings 8037f967c01SBen Hutchings if (channel->type->copy) 8047f967c01SBen Hutchings continue; 8057f967c01SBen Hutchings next_buffer_table = max(next_buffer_table, 8067f967c01SBen Hutchings channel->eventq.index + 8077f967c01SBen Hutchings channel->eventq.entries); 8087f967c01SBen Hutchings efx_for_each_channel_rx_queue(rx_queue, channel) 8097f967c01SBen Hutchings next_buffer_table = max(next_buffer_table, 8107f967c01SBen Hutchings rx_queue->rxd.index + 8117f967c01SBen Hutchings rx_queue->rxd.entries); 8127f967c01SBen Hutchings efx_for_each_channel_tx_queue(tx_queue, channel) 8137f967c01SBen Hutchings next_buffer_table = max(next_buffer_table, 8147f967c01SBen Hutchings tx_queue->txd.index + 8157f967c01SBen Hutchings tx_queue->txd.entries); 8167f967c01SBen Hutchings } 817874aeea5SJeff Kirsher 81829c69a48SBen Hutchings efx_device_detach_sync(efx); 819874aeea5SJeff Kirsher efx_stop_all(efx); 820d8291187SBen Hutchings efx_soft_disable_interrupts(efx); 821874aeea5SJeff Kirsher 8227f967c01SBen Hutchings /* Clone channels (where possible) */ 823874aeea5SJeff Kirsher memset(other_channel, 0, sizeof(other_channel)); 824874aeea5SJeff Kirsher for (i = 0; i < efx->n_channels; i++) { 8257f967c01SBen Hutchings channel = efx->channel[i]; 8267f967c01SBen Hutchings if (channel->type->copy) 8277f967c01SBen Hutchings channel = channel->type->copy(channel); 828874aeea5SJeff Kirsher if (!channel) { 829874aeea5SJeff Kirsher rc = -ENOMEM; 830874aeea5SJeff Kirsher goto out; 831874aeea5SJeff Kirsher } 832874aeea5SJeff Kirsher other_channel[i] = channel; 833874aeea5SJeff Kirsher } 834874aeea5SJeff Kirsher 835874aeea5SJeff Kirsher /* Swap entry counts and channel pointers */ 836874aeea5SJeff Kirsher old_rxq_entries = efx->rxq_entries; 837874aeea5SJeff Kirsher old_txq_entries = efx->txq_entries; 838874aeea5SJeff Kirsher efx->rxq_entries = rxq_entries; 839874aeea5SJeff Kirsher efx->txq_entries = txq_entries; 840874aeea5SJeff Kirsher for (i = 0; i < efx->n_channels; i++) { 841874aeea5SJeff Kirsher channel = efx->channel[i]; 842874aeea5SJeff Kirsher efx->channel[i] = other_channel[i]; 843874aeea5SJeff Kirsher other_channel[i] = channel; 844874aeea5SJeff Kirsher } 845874aeea5SJeff Kirsher 8467f967c01SBen Hutchings /* Restart buffer table allocation */ 8477f967c01SBen Hutchings efx->next_buffer_table = next_buffer_table; 8487f967c01SBen Hutchings 8497f967c01SBen Hutchings for (i = 0; i < efx->n_channels; i++) { 8507f967c01SBen Hutchings channel = efx->channel[i]; 8517f967c01SBen Hutchings if (!channel->type->copy) 8527f967c01SBen Hutchings continue; 8537f967c01SBen Hutchings rc = efx_probe_channel(channel); 854874aeea5SJeff Kirsher if (rc) 855874aeea5SJeff Kirsher goto rollback; 8567f967c01SBen Hutchings efx_init_napi_channel(efx->channel[i]); 857874aeea5SJeff Kirsher } 858874aeea5SJeff Kirsher 8597f967c01SBen Hutchings out: 8607f967c01SBen Hutchings /* Destroy unused channel structures */ 8617f967c01SBen Hutchings for (i = 0; i < efx->n_channels; i++) { 8627f967c01SBen Hutchings channel = other_channel[i]; 8637f967c01SBen Hutchings if (channel && channel->type->copy) { 8647f967c01SBen Hutchings efx_fini_napi_channel(channel); 8657f967c01SBen Hutchings efx_remove_channel(channel); 8667f967c01SBen Hutchings kfree(channel); 8677f967c01SBen Hutchings } 8687f967c01SBen Hutchings } 8697f967c01SBen Hutchings 870261e4d96SJon Cooper rc2 = efx_soft_enable_interrupts(efx); 871261e4d96SJon Cooper if (rc2) { 872261e4d96SJon Cooper rc = rc ? rc : rc2; 873261e4d96SJon Cooper netif_err(efx, drv, efx->net_dev, 874261e4d96SJon Cooper "unable to restart interrupts on channel reallocation\n"); 875261e4d96SJon Cooper efx_schedule_reset(efx, RESET_TYPE_DISABLE); 876261e4d96SJon Cooper } else { 877874aeea5SJeff Kirsher efx_start_all(efx); 8789c568fd8SPeter Dunning efx_device_attach_if_not_resetting(efx); 879261e4d96SJon Cooper } 880874aeea5SJeff Kirsher return rc; 881874aeea5SJeff Kirsher 882874aeea5SJeff Kirsher rollback: 883874aeea5SJeff Kirsher /* Swap back */ 884874aeea5SJeff Kirsher efx->rxq_entries = old_rxq_entries; 885874aeea5SJeff Kirsher efx->txq_entries = old_txq_entries; 886874aeea5SJeff Kirsher for (i = 0; i < efx->n_channels; i++) { 887874aeea5SJeff Kirsher channel = efx->channel[i]; 888874aeea5SJeff Kirsher efx->channel[i] = other_channel[i]; 889874aeea5SJeff Kirsher other_channel[i] = channel; 890874aeea5SJeff Kirsher } 891874aeea5SJeff Kirsher goto out; 892874aeea5SJeff Kirsher } 893874aeea5SJeff Kirsher 894874aeea5SJeff Kirsher void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue) 895874aeea5SJeff Kirsher { 896874aeea5SJeff Kirsher mod_timer(&rx_queue->slow_fill, jiffies + msecs_to_jiffies(100)); 897874aeea5SJeff Kirsher } 898874aeea5SJeff Kirsher 8992935e3c3SEdward Cree bool efx_default_channel_want_txqs(struct efx_channel *channel) 9002935e3c3SEdward Cree { 9012935e3c3SEdward Cree return channel->channel - channel->efx->tx_channel_offset < 9022935e3c3SEdward Cree channel->efx->n_tx_channels; 9032935e3c3SEdward Cree } 9042935e3c3SEdward Cree 9057f967c01SBen Hutchings static const struct efx_channel_type efx_default_channel_type = { 9067f967c01SBen Hutchings .pre_probe = efx_channel_dummy_op_int, 907c31e5f9fSStuart Hodgson .post_remove = efx_channel_dummy_op_void, 9087f967c01SBen Hutchings .get_name = efx_get_channel_name, 9097f967c01SBen Hutchings .copy = efx_copy_channel, 9102935e3c3SEdward Cree .want_txqs = efx_default_channel_want_txqs, 9117f967c01SBen Hutchings .keep_eventq = false, 9122935e3c3SEdward Cree .want_pio = true, 9137f967c01SBen Hutchings }; 9147f967c01SBen Hutchings 9157f967c01SBen Hutchings int efx_channel_dummy_op_int(struct efx_channel *channel) 9167f967c01SBen Hutchings { 9177f967c01SBen Hutchings return 0; 9187f967c01SBen Hutchings } 9197f967c01SBen Hutchings 920c31e5f9fSStuart Hodgson void efx_channel_dummy_op_void(struct efx_channel *channel) 921c31e5f9fSStuart Hodgson { 922c31e5f9fSStuart Hodgson } 923c31e5f9fSStuart Hodgson 924874aeea5SJeff Kirsher /************************************************************************** 925874aeea5SJeff Kirsher * 926874aeea5SJeff Kirsher * Port handling 927874aeea5SJeff Kirsher * 928874aeea5SJeff Kirsher **************************************************************************/ 929874aeea5SJeff Kirsher 930874aeea5SJeff Kirsher /* This ensures that the kernel is kept informed (via 931874aeea5SJeff Kirsher * netif_carrier_on/off) of the link status, and also maintains the 932874aeea5SJeff Kirsher * link status's stop on the port's TX queue. 933874aeea5SJeff Kirsher */ 934874aeea5SJeff Kirsher void efx_link_status_changed(struct efx_nic *efx) 935874aeea5SJeff Kirsher { 936874aeea5SJeff Kirsher struct efx_link_state *link_state = &efx->link_state; 937874aeea5SJeff Kirsher 938874aeea5SJeff Kirsher /* SFC Bug 5356: A net_dev notifier is registered, so we must ensure 939874aeea5SJeff Kirsher * that no events are triggered between unregister_netdev() and the 940874aeea5SJeff Kirsher * driver unloading. A more general condition is that NETDEV_CHANGE 941874aeea5SJeff Kirsher * can only be generated between NETDEV_UP and NETDEV_DOWN */ 942874aeea5SJeff Kirsher if (!netif_running(efx->net_dev)) 943874aeea5SJeff Kirsher return; 944874aeea5SJeff Kirsher 945874aeea5SJeff Kirsher if (link_state->up != netif_carrier_ok(efx->net_dev)) { 946874aeea5SJeff Kirsher efx->n_link_state_changes++; 947874aeea5SJeff Kirsher 948874aeea5SJeff Kirsher if (link_state->up) 949874aeea5SJeff Kirsher netif_carrier_on(efx->net_dev); 950874aeea5SJeff Kirsher else 951874aeea5SJeff Kirsher netif_carrier_off(efx->net_dev); 952874aeea5SJeff Kirsher } 953874aeea5SJeff Kirsher 954874aeea5SJeff Kirsher /* Status message for kernel log */ 9552aa9ef11SBen Hutchings if (link_state->up) 956874aeea5SJeff Kirsher netif_info(efx, link, efx->net_dev, 957964e6135SBen Hutchings "link up at %uMbps %s-duplex (MTU %d)\n", 958874aeea5SJeff Kirsher link_state->speed, link_state->fd ? "full" : "half", 959964e6135SBen Hutchings efx->net_dev->mtu); 9602aa9ef11SBen Hutchings else 961874aeea5SJeff Kirsher netif_info(efx, link, efx->net_dev, "link down\n"); 962874aeea5SJeff Kirsher } 963874aeea5SJeff Kirsher 964c2ab85d2SEdward Cree void efx_link_set_advertising(struct efx_nic *efx, 965c2ab85d2SEdward Cree const unsigned long *advertising) 966874aeea5SJeff Kirsher { 967c2ab85d2SEdward Cree memcpy(efx->link_advertising, advertising, 968c2ab85d2SEdward Cree sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK())); 969c2ab85d2SEdward Cree 970c2ab85d2SEdward Cree efx->link_advertising[0] |= ADVERTISED_Autoneg; 971c2ab85d2SEdward Cree if (advertising[0] & ADVERTISED_Pause) 972874aeea5SJeff Kirsher efx->wanted_fc |= (EFX_FC_TX | EFX_FC_RX); 973874aeea5SJeff Kirsher else 974874aeea5SJeff Kirsher efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX); 975c2ab85d2SEdward Cree if (advertising[0] & ADVERTISED_Asym_Pause) 976874aeea5SJeff Kirsher efx->wanted_fc ^= EFX_FC_TX; 977874aeea5SJeff Kirsher } 978c2ab85d2SEdward Cree 979c2ab85d2SEdward Cree /* Equivalent to efx_link_set_advertising with all-zeroes, except does not 980c2ab85d2SEdward Cree * force the Autoneg bit on. 981c2ab85d2SEdward Cree */ 982c2ab85d2SEdward Cree void efx_link_clear_advertising(struct efx_nic *efx) 983c2ab85d2SEdward Cree { 984c2ab85d2SEdward Cree bitmap_zero(efx->link_advertising, __ETHTOOL_LINK_MODE_MASK_NBITS); 985c2ab85d2SEdward Cree efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX); 986874aeea5SJeff Kirsher } 987874aeea5SJeff Kirsher 988874aeea5SJeff Kirsher void efx_link_set_wanted_fc(struct efx_nic *efx, u8 wanted_fc) 989874aeea5SJeff Kirsher { 990874aeea5SJeff Kirsher efx->wanted_fc = wanted_fc; 991c2ab85d2SEdward Cree if (efx->link_advertising[0]) { 992874aeea5SJeff Kirsher if (wanted_fc & EFX_FC_RX) 993c2ab85d2SEdward Cree efx->link_advertising[0] |= (ADVERTISED_Pause | 994874aeea5SJeff Kirsher ADVERTISED_Asym_Pause); 995874aeea5SJeff Kirsher else 996c2ab85d2SEdward Cree efx->link_advertising[0] &= ~(ADVERTISED_Pause | 997874aeea5SJeff Kirsher ADVERTISED_Asym_Pause); 998874aeea5SJeff Kirsher if (wanted_fc & EFX_FC_TX) 999c2ab85d2SEdward Cree efx->link_advertising[0] ^= ADVERTISED_Asym_Pause; 1000874aeea5SJeff Kirsher } 1001874aeea5SJeff Kirsher } 1002874aeea5SJeff Kirsher 1003874aeea5SJeff Kirsher static void efx_fini_port(struct efx_nic *efx); 1004874aeea5SJeff Kirsher 10050d322413SEdward Cree /* We assume that efx->type->reconfigure_mac will always try to sync RX 10060d322413SEdward Cree * filters and therefore needs to read-lock the filter table against freeing 10070d322413SEdward Cree */ 10080d322413SEdward Cree void efx_mac_reconfigure(struct efx_nic *efx) 10090d322413SEdward Cree { 10100d322413SEdward Cree down_read(&efx->filter_sem); 10110d322413SEdward Cree efx->type->reconfigure_mac(efx); 10120d322413SEdward Cree up_read(&efx->filter_sem); 10130d322413SEdward Cree } 10140d322413SEdward Cree 1015874aeea5SJeff Kirsher /* Push loopback/power/transmit disable settings to the PHY, and reconfigure 1016874aeea5SJeff Kirsher * the MAC appropriately. All other PHY configuration changes are pushed 1017874aeea5SJeff Kirsher * through phy_op->set_settings(), and pushed asynchronously to the MAC 1018874aeea5SJeff Kirsher * through efx_monitor(). 1019874aeea5SJeff Kirsher * 1020874aeea5SJeff Kirsher * Callers must hold the mac_lock 1021874aeea5SJeff Kirsher */ 1022874aeea5SJeff Kirsher int __efx_reconfigure_port(struct efx_nic *efx) 1023874aeea5SJeff Kirsher { 1024874aeea5SJeff Kirsher enum efx_phy_mode phy_mode; 1025874aeea5SJeff Kirsher int rc; 1026874aeea5SJeff Kirsher 1027874aeea5SJeff Kirsher WARN_ON(!mutex_is_locked(&efx->mac_lock)); 1028874aeea5SJeff Kirsher 1029874aeea5SJeff Kirsher /* Disable PHY transmit in mac level loopbacks */ 1030874aeea5SJeff Kirsher phy_mode = efx->phy_mode; 1031874aeea5SJeff Kirsher if (LOOPBACK_INTERNAL(efx)) 1032874aeea5SJeff Kirsher efx->phy_mode |= PHY_MODE_TX_DISABLED; 1033874aeea5SJeff Kirsher else 1034874aeea5SJeff Kirsher efx->phy_mode &= ~PHY_MODE_TX_DISABLED; 1035874aeea5SJeff Kirsher 1036874aeea5SJeff Kirsher rc = efx->type->reconfigure_port(efx); 1037874aeea5SJeff Kirsher 1038874aeea5SJeff Kirsher if (rc) 1039874aeea5SJeff Kirsher efx->phy_mode = phy_mode; 1040874aeea5SJeff Kirsher 1041874aeea5SJeff Kirsher return rc; 1042874aeea5SJeff Kirsher } 1043874aeea5SJeff Kirsher 1044874aeea5SJeff Kirsher /* Reinitialise the MAC to pick up new PHY settings, even if the port is 1045874aeea5SJeff Kirsher * disabled. */ 1046874aeea5SJeff Kirsher int efx_reconfigure_port(struct efx_nic *efx) 1047874aeea5SJeff Kirsher { 1048874aeea5SJeff Kirsher int rc; 1049874aeea5SJeff Kirsher 1050874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 1051874aeea5SJeff Kirsher 1052874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1053874aeea5SJeff Kirsher rc = __efx_reconfigure_port(efx); 1054874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1055874aeea5SJeff Kirsher 1056874aeea5SJeff Kirsher return rc; 1057874aeea5SJeff Kirsher } 1058874aeea5SJeff Kirsher 1059874aeea5SJeff Kirsher /* Asynchronous work item for changing MAC promiscuity and multicast 1060874aeea5SJeff Kirsher * hash. Avoid a drain/rx_ingress enable by reconfiguring the current 1061874aeea5SJeff Kirsher * MAC directly. */ 1062874aeea5SJeff Kirsher static void efx_mac_work(struct work_struct *data) 1063874aeea5SJeff Kirsher { 1064874aeea5SJeff Kirsher struct efx_nic *efx = container_of(data, struct efx_nic, mac_work); 1065874aeea5SJeff Kirsher 1066874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 106730b81cdaSBen Hutchings if (efx->port_enabled) 10680d322413SEdward Cree efx_mac_reconfigure(efx); 1069874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1070874aeea5SJeff Kirsher } 1071874aeea5SJeff Kirsher 1072874aeea5SJeff Kirsher static int efx_probe_port(struct efx_nic *efx) 1073874aeea5SJeff Kirsher { 1074874aeea5SJeff Kirsher int rc; 1075874aeea5SJeff Kirsher 1076874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, "create port\n"); 1077874aeea5SJeff Kirsher 1078874aeea5SJeff Kirsher if (phy_flash_cfg) 1079874aeea5SJeff Kirsher efx->phy_mode = PHY_MODE_SPECIAL; 1080874aeea5SJeff Kirsher 1081874aeea5SJeff Kirsher /* Connect up MAC/PHY operations table */ 1082874aeea5SJeff Kirsher rc = efx->type->probe_port(efx); 1083874aeea5SJeff Kirsher if (rc) 1084874aeea5SJeff Kirsher return rc; 1085874aeea5SJeff Kirsher 1086e332bcb3SBen Hutchings /* Initialise MAC address to permanent address */ 1087cd84ff4dSEdward Cree ether_addr_copy(efx->net_dev->dev_addr, efx->net_dev->perm_addr); 1088874aeea5SJeff Kirsher 1089874aeea5SJeff Kirsher return 0; 1090874aeea5SJeff Kirsher } 1091874aeea5SJeff Kirsher 1092874aeea5SJeff Kirsher static int efx_init_port(struct efx_nic *efx) 1093874aeea5SJeff Kirsher { 1094874aeea5SJeff Kirsher int rc; 1095874aeea5SJeff Kirsher 1096874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "init port\n"); 1097874aeea5SJeff Kirsher 1098874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1099874aeea5SJeff Kirsher 1100874aeea5SJeff Kirsher rc = efx->phy_op->init(efx); 1101874aeea5SJeff Kirsher if (rc) 1102874aeea5SJeff Kirsher goto fail1; 1103874aeea5SJeff Kirsher 1104874aeea5SJeff Kirsher efx->port_initialized = true; 1105874aeea5SJeff Kirsher 1106874aeea5SJeff Kirsher /* Reconfigure the MAC before creating dma queues (required for 1107874aeea5SJeff Kirsher * Falcon/A1 where RX_INGR_EN/TX_DRAIN_EN isn't supported) */ 11080d322413SEdward Cree efx_mac_reconfigure(efx); 1109874aeea5SJeff Kirsher 1110874aeea5SJeff Kirsher /* Ensure the PHY advertises the correct flow control settings */ 1111874aeea5SJeff Kirsher rc = efx->phy_op->reconfigure(efx); 1112267d9d73SEdward Cree if (rc && rc != -EPERM) 1113874aeea5SJeff Kirsher goto fail2; 1114874aeea5SJeff Kirsher 1115874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1116874aeea5SJeff Kirsher return 0; 1117874aeea5SJeff Kirsher 1118874aeea5SJeff Kirsher fail2: 1119874aeea5SJeff Kirsher efx->phy_op->fini(efx); 1120874aeea5SJeff Kirsher fail1: 1121874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1122874aeea5SJeff Kirsher return rc; 1123874aeea5SJeff Kirsher } 1124874aeea5SJeff Kirsher 1125874aeea5SJeff Kirsher static void efx_start_port(struct efx_nic *efx) 1126874aeea5SJeff Kirsher { 1127874aeea5SJeff Kirsher netif_dbg(efx, ifup, efx->net_dev, "start port\n"); 1128874aeea5SJeff Kirsher BUG_ON(efx->port_enabled); 1129874aeea5SJeff Kirsher 1130874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1131874aeea5SJeff Kirsher efx->port_enabled = true; 1132874aeea5SJeff Kirsher 1133d615c039SBen Hutchings /* Ensure MAC ingress/egress is enabled */ 11340d322413SEdward Cree efx_mac_reconfigure(efx); 1135874aeea5SJeff Kirsher 1136874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1137874aeea5SJeff Kirsher } 1138874aeea5SJeff Kirsher 1139d615c039SBen Hutchings /* Cancel work for MAC reconfiguration, periodic hardware monitoring 1140d615c039SBen Hutchings * and the async self-test, wait for them to finish and prevent them 1141d615c039SBen Hutchings * being scheduled again. This doesn't cover online resets, which 1142d615c039SBen Hutchings * should only be cancelled when removing the device. 1143d615c039SBen Hutchings */ 1144874aeea5SJeff Kirsher static void efx_stop_port(struct efx_nic *efx) 1145874aeea5SJeff Kirsher { 1146874aeea5SJeff Kirsher netif_dbg(efx, ifdown, efx->net_dev, "stop port\n"); 1147874aeea5SJeff Kirsher 1148d615c039SBen Hutchings EFX_ASSERT_RESET_SERIALISED(efx); 1149d615c039SBen Hutchings 1150874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1151874aeea5SJeff Kirsher efx->port_enabled = false; 1152874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1153874aeea5SJeff Kirsher 1154874aeea5SJeff Kirsher /* Serialise against efx_set_multicast_list() */ 1155874aeea5SJeff Kirsher netif_addr_lock_bh(efx->net_dev); 1156874aeea5SJeff Kirsher netif_addr_unlock_bh(efx->net_dev); 1157d615c039SBen Hutchings 1158d615c039SBen Hutchings cancel_delayed_work_sync(&efx->monitor_work); 1159d615c039SBen Hutchings efx_selftest_async_cancel(efx); 1160d615c039SBen Hutchings cancel_work_sync(&efx->mac_work); 1161874aeea5SJeff Kirsher } 1162874aeea5SJeff Kirsher 1163874aeea5SJeff Kirsher static void efx_fini_port(struct efx_nic *efx) 1164874aeea5SJeff Kirsher { 1165874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "shut down port\n"); 1166874aeea5SJeff Kirsher 1167874aeea5SJeff Kirsher if (!efx->port_initialized) 1168874aeea5SJeff Kirsher return; 1169874aeea5SJeff Kirsher 1170874aeea5SJeff Kirsher efx->phy_op->fini(efx); 1171874aeea5SJeff Kirsher efx->port_initialized = false; 1172874aeea5SJeff Kirsher 1173874aeea5SJeff Kirsher efx->link_state.up = false; 1174874aeea5SJeff Kirsher efx_link_status_changed(efx); 1175874aeea5SJeff Kirsher } 1176874aeea5SJeff Kirsher 1177874aeea5SJeff Kirsher static void efx_remove_port(struct efx_nic *efx) 1178874aeea5SJeff Kirsher { 1179874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "destroying port\n"); 1180874aeea5SJeff Kirsher 1181874aeea5SJeff Kirsher efx->type->remove_port(efx); 1182874aeea5SJeff Kirsher } 1183874aeea5SJeff Kirsher 1184874aeea5SJeff Kirsher /************************************************************************** 1185874aeea5SJeff Kirsher * 1186874aeea5SJeff Kirsher * NIC handling 1187874aeea5SJeff Kirsher * 1188874aeea5SJeff Kirsher **************************************************************************/ 1189874aeea5SJeff Kirsher 11900bcf4a64SBen Hutchings static LIST_HEAD(efx_primary_list); 11910bcf4a64SBen Hutchings static LIST_HEAD(efx_unassociated_list); 11920bcf4a64SBen Hutchings 11930bcf4a64SBen Hutchings static bool efx_same_controller(struct efx_nic *left, struct efx_nic *right) 11940bcf4a64SBen Hutchings { 11950bcf4a64SBen Hutchings return left->type == right->type && 11960bcf4a64SBen Hutchings left->vpd_sn && right->vpd_sn && 11970bcf4a64SBen Hutchings !strcmp(left->vpd_sn, right->vpd_sn); 11980bcf4a64SBen Hutchings } 11990bcf4a64SBen Hutchings 12000bcf4a64SBen Hutchings static void efx_associate(struct efx_nic *efx) 12010bcf4a64SBen Hutchings { 12020bcf4a64SBen Hutchings struct efx_nic *other, *next; 12030bcf4a64SBen Hutchings 12040bcf4a64SBen Hutchings if (efx->primary == efx) { 12050bcf4a64SBen Hutchings /* Adding primary function; look for secondaries */ 12060bcf4a64SBen Hutchings 12070bcf4a64SBen Hutchings netif_dbg(efx, probe, efx->net_dev, "adding to primary list\n"); 12080bcf4a64SBen Hutchings list_add_tail(&efx->node, &efx_primary_list); 12090bcf4a64SBen Hutchings 12100bcf4a64SBen Hutchings list_for_each_entry_safe(other, next, &efx_unassociated_list, 12110bcf4a64SBen Hutchings node) { 12120bcf4a64SBen Hutchings if (efx_same_controller(efx, other)) { 12130bcf4a64SBen Hutchings list_del(&other->node); 12140bcf4a64SBen Hutchings netif_dbg(other, probe, other->net_dev, 12150bcf4a64SBen Hutchings "moving to secondary list of %s %s\n", 12160bcf4a64SBen Hutchings pci_name(efx->pci_dev), 12170bcf4a64SBen Hutchings efx->net_dev->name); 12180bcf4a64SBen Hutchings list_add_tail(&other->node, 12190bcf4a64SBen Hutchings &efx->secondary_list); 12200bcf4a64SBen Hutchings other->primary = efx; 12210bcf4a64SBen Hutchings } 12220bcf4a64SBen Hutchings } 12230bcf4a64SBen Hutchings } else { 12240bcf4a64SBen Hutchings /* Adding secondary function; look for primary */ 12250bcf4a64SBen Hutchings 12260bcf4a64SBen Hutchings list_for_each_entry(other, &efx_primary_list, node) { 12270bcf4a64SBen Hutchings if (efx_same_controller(efx, other)) { 12280bcf4a64SBen Hutchings netif_dbg(efx, probe, efx->net_dev, 12290bcf4a64SBen Hutchings "adding to secondary list of %s %s\n", 12300bcf4a64SBen Hutchings pci_name(other->pci_dev), 12310bcf4a64SBen Hutchings other->net_dev->name); 12320bcf4a64SBen Hutchings list_add_tail(&efx->node, 12330bcf4a64SBen Hutchings &other->secondary_list); 12340bcf4a64SBen Hutchings efx->primary = other; 12350bcf4a64SBen Hutchings return; 12360bcf4a64SBen Hutchings } 12370bcf4a64SBen Hutchings } 12380bcf4a64SBen Hutchings 12390bcf4a64SBen Hutchings netif_dbg(efx, probe, efx->net_dev, 12400bcf4a64SBen Hutchings "adding to unassociated list\n"); 12410bcf4a64SBen Hutchings list_add_tail(&efx->node, &efx_unassociated_list); 12420bcf4a64SBen Hutchings } 12430bcf4a64SBen Hutchings } 12440bcf4a64SBen Hutchings 12450bcf4a64SBen Hutchings static void efx_dissociate(struct efx_nic *efx) 12460bcf4a64SBen Hutchings { 12470bcf4a64SBen Hutchings struct efx_nic *other, *next; 12480bcf4a64SBen Hutchings 12490bcf4a64SBen Hutchings list_del(&efx->node); 12500bcf4a64SBen Hutchings efx->primary = NULL; 12510bcf4a64SBen Hutchings 12520bcf4a64SBen Hutchings list_for_each_entry_safe(other, next, &efx->secondary_list, node) { 12530bcf4a64SBen Hutchings list_del(&other->node); 12540bcf4a64SBen Hutchings netif_dbg(other, probe, other->net_dev, 12550bcf4a64SBen Hutchings "moving to unassociated list\n"); 12560bcf4a64SBen Hutchings list_add_tail(&other->node, &efx_unassociated_list); 12570bcf4a64SBen Hutchings other->primary = NULL; 12580bcf4a64SBen Hutchings } 12590bcf4a64SBen Hutchings } 12600bcf4a64SBen Hutchings 1261874aeea5SJeff Kirsher /* This configures the PCI device to enable I/O and DMA. */ 1262874aeea5SJeff Kirsher static int efx_init_io(struct efx_nic *efx) 1263874aeea5SJeff Kirsher { 1264874aeea5SJeff Kirsher struct pci_dev *pci_dev = efx->pci_dev; 1265874aeea5SJeff Kirsher dma_addr_t dma_mask = efx->type->max_dma_mask; 1266b105798fSBen Hutchings unsigned int mem_map_size = efx->type->mem_map_size(efx); 126702246a7fSShradha Shah int rc, bar; 1268874aeea5SJeff Kirsher 1269874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, "initialising I/O\n"); 1270874aeea5SJeff Kirsher 127103714bbbSEdward Cree bar = efx->type->mem_bar(efx); 127202246a7fSShradha Shah 1273874aeea5SJeff Kirsher rc = pci_enable_device(pci_dev); 1274874aeea5SJeff Kirsher if (rc) { 1275874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1276874aeea5SJeff Kirsher "failed to enable PCI device\n"); 1277874aeea5SJeff Kirsher goto fail1; 1278874aeea5SJeff Kirsher } 1279874aeea5SJeff Kirsher 1280874aeea5SJeff Kirsher pci_set_master(pci_dev); 1281874aeea5SJeff Kirsher 1282874aeea5SJeff Kirsher /* Set the PCI DMA mask. Try all possibilities from our 1283874aeea5SJeff Kirsher * genuine mask down to 32 bits, because some architectures 1284874aeea5SJeff Kirsher * (e.g. x86_64 with iommu_sac_force set) will allow 40 bit 1285874aeea5SJeff Kirsher * masks event though they reject 46 bit masks. 1286874aeea5SJeff Kirsher */ 1287874aeea5SJeff Kirsher while (dma_mask > 0x7fffffffUL) { 12889663dedaSRussell King rc = dma_set_mask_and_coherent(&pci_dev->dev, dma_mask); 1289e9e01846SBen Hutchings if (rc == 0) 1290874aeea5SJeff Kirsher break; 1291874aeea5SJeff Kirsher dma_mask >>= 1; 1292874aeea5SJeff Kirsher } 1293874aeea5SJeff Kirsher if (rc) { 1294874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1295874aeea5SJeff Kirsher "could not find a suitable DMA mask\n"); 1296874aeea5SJeff Kirsher goto fail2; 1297874aeea5SJeff Kirsher } 1298874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, 1299874aeea5SJeff Kirsher "using DMA mask %llx\n", (unsigned long long) dma_mask); 1300874aeea5SJeff Kirsher 130102246a7fSShradha Shah efx->membase_phys = pci_resource_start(efx->pci_dev, bar); 130202246a7fSShradha Shah rc = pci_request_region(pci_dev, bar, "sfc"); 1303874aeea5SJeff Kirsher if (rc) { 1304874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1305874aeea5SJeff Kirsher "request for memory BAR failed\n"); 1306874aeea5SJeff Kirsher rc = -EIO; 1307874aeea5SJeff Kirsher goto fail3; 1308874aeea5SJeff Kirsher } 1309b105798fSBen Hutchings efx->membase = ioremap_nocache(efx->membase_phys, mem_map_size); 1310874aeea5SJeff Kirsher if (!efx->membase) { 1311874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1312874aeea5SJeff Kirsher "could not map memory BAR at %llx+%x\n", 1313b105798fSBen Hutchings (unsigned long long)efx->membase_phys, mem_map_size); 1314874aeea5SJeff Kirsher rc = -ENOMEM; 1315874aeea5SJeff Kirsher goto fail4; 1316874aeea5SJeff Kirsher } 1317874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, 1318874aeea5SJeff Kirsher "memory BAR at %llx+%x (virtual %p)\n", 1319b105798fSBen Hutchings (unsigned long long)efx->membase_phys, mem_map_size, 1320b105798fSBen Hutchings efx->membase); 1321874aeea5SJeff Kirsher 1322874aeea5SJeff Kirsher return 0; 1323874aeea5SJeff Kirsher 1324874aeea5SJeff Kirsher fail4: 132502246a7fSShradha Shah pci_release_region(efx->pci_dev, bar); 1326874aeea5SJeff Kirsher fail3: 1327874aeea5SJeff Kirsher efx->membase_phys = 0; 1328874aeea5SJeff Kirsher fail2: 1329874aeea5SJeff Kirsher pci_disable_device(efx->pci_dev); 1330874aeea5SJeff Kirsher fail1: 1331874aeea5SJeff Kirsher return rc; 1332874aeea5SJeff Kirsher } 1333874aeea5SJeff Kirsher 1334874aeea5SJeff Kirsher static void efx_fini_io(struct efx_nic *efx) 1335874aeea5SJeff Kirsher { 133602246a7fSShradha Shah int bar; 133702246a7fSShradha Shah 1338874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "shutting down I/O\n"); 1339874aeea5SJeff Kirsher 1340874aeea5SJeff Kirsher if (efx->membase) { 1341874aeea5SJeff Kirsher iounmap(efx->membase); 1342874aeea5SJeff Kirsher efx->membase = NULL; 1343874aeea5SJeff Kirsher } 1344874aeea5SJeff Kirsher 1345874aeea5SJeff Kirsher if (efx->membase_phys) { 134603714bbbSEdward Cree bar = efx->type->mem_bar(efx); 134702246a7fSShradha Shah pci_release_region(efx->pci_dev, bar); 1348874aeea5SJeff Kirsher efx->membase_phys = 0; 1349874aeea5SJeff Kirsher } 1350874aeea5SJeff Kirsher 13516598dad2SDaniel Pieczko /* Don't disable bus-mastering if VFs are assigned */ 13526598dad2SDaniel Pieczko if (!pci_vfs_assigned(efx->pci_dev)) 1353874aeea5SJeff Kirsher pci_disable_device(efx->pci_dev); 1354874aeea5SJeff Kirsher } 1355874aeea5SJeff Kirsher 1356267c0157SJon Cooper void efx_set_default_rx_indir_table(struct efx_nic *efx) 1357267c0157SJon Cooper { 1358267c0157SJon Cooper size_t i; 1359267c0157SJon Cooper 1360267c0157SJon Cooper for (i = 0; i < ARRAY_SIZE(efx->rx_indir_table); i++) 1361267c0157SJon Cooper efx->rx_indir_table[i] = 1362267c0157SJon Cooper ethtool_rxfh_indir_default(i, efx->rss_spread); 1363267c0157SJon Cooper } 1364267c0157SJon Cooper 1365a9a52506SBen Hutchings static unsigned int efx_wanted_parallelism(struct efx_nic *efx) 1366874aeea5SJeff Kirsher { 1367cdb08f8fSBen Hutchings cpumask_var_t thread_mask; 1368a16e5b24SBen Hutchings unsigned int count; 1369874aeea5SJeff Kirsher int cpu; 1370874aeea5SJeff Kirsher 1371cd2d5b52SBen Hutchings if (rss_cpus) { 1372cd2d5b52SBen Hutchings count = rss_cpus; 1373cd2d5b52SBen Hutchings } else { 1374cdb08f8fSBen Hutchings if (unlikely(!zalloc_cpumask_var(&thread_mask, GFP_KERNEL))) { 1375a9a52506SBen Hutchings netif_warn(efx, probe, efx->net_dev, 1376a9a52506SBen Hutchings "RSS disabled due to allocation failure\n"); 1377874aeea5SJeff Kirsher return 1; 1378874aeea5SJeff Kirsher } 1379874aeea5SJeff Kirsher 1380874aeea5SJeff Kirsher count = 0; 1381874aeea5SJeff Kirsher for_each_online_cpu(cpu) { 1382cdb08f8fSBen Hutchings if (!cpumask_test_cpu(cpu, thread_mask)) { 1383874aeea5SJeff Kirsher ++count; 1384cdb08f8fSBen Hutchings cpumask_or(thread_mask, thread_mask, 138506931e62SBartosz Golaszewski topology_sibling_cpumask(cpu)); 1386874aeea5SJeff Kirsher } 1387874aeea5SJeff Kirsher } 1388874aeea5SJeff Kirsher 1389cdb08f8fSBen Hutchings free_cpumask_var(thread_mask); 1390cd2d5b52SBen Hutchings } 1391cd2d5b52SBen Hutchings 1392271a8b42SBert Kenward if (count > EFX_MAX_RX_QUEUES) { 1393271a8b42SBert Kenward netif_cond_dbg(efx, probe, efx->net_dev, !rss_cpus, warn, 1394271a8b42SBert Kenward "Reducing number of rx queues from %u to %u.\n", 1395271a8b42SBert Kenward count, EFX_MAX_RX_QUEUES); 1396271a8b42SBert Kenward count = EFX_MAX_RX_QUEUES; 1397271a8b42SBert Kenward } 1398271a8b42SBert Kenward 1399cd2d5b52SBen Hutchings /* If RSS is requested for the PF *and* VFs then we can't write RSS 1400cd2d5b52SBen Hutchings * table entries that are inaccessible to VFs 1401cd2d5b52SBen Hutchings */ 14027fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 14037fa8d547SShradha Shah if (efx->type->sriov_wanted) { 1404d98a4ffeSShradha Shah if (efx->type->sriov_wanted(efx) && efx_vf_size(efx) > 1 && 1405cd2d5b52SBen Hutchings count > efx_vf_size(efx)) { 1406cd2d5b52SBen Hutchings netif_warn(efx, probe, efx->net_dev, 1407cd2d5b52SBen Hutchings "Reducing number of RSS channels from %u to %u for " 1408cd2d5b52SBen Hutchings "VF support. Increase vf-msix-limit to use more " 1409cd2d5b52SBen Hutchings "channels on the PF.\n", 1410cd2d5b52SBen Hutchings count, efx_vf_size(efx)); 1411cd2d5b52SBen Hutchings count = efx_vf_size(efx); 1412cd2d5b52SBen Hutchings } 14137fa8d547SShradha Shah } 14147fa8d547SShradha Shah #endif 1415cd2d5b52SBen Hutchings 1416874aeea5SJeff Kirsher return count; 1417874aeea5SJeff Kirsher } 1418874aeea5SJeff Kirsher 1419874aeea5SJeff Kirsher /* Probe the number and type of interrupts we are able to obtain, and 1420874aeea5SJeff Kirsher * the resulting numbers of channels and RX queues. 1421874aeea5SJeff Kirsher */ 1422874aeea5SJeff Kirsher static int efx_probe_interrupts(struct efx_nic *efx) 1423874aeea5SJeff Kirsher { 14247f967c01SBen Hutchings unsigned int extra_channels = 0; 14257f967c01SBen Hutchings unsigned int i, j; 1426a16e5b24SBen Hutchings int rc; 1427874aeea5SJeff Kirsher 14287f967c01SBen Hutchings for (i = 0; i < EFX_MAX_EXTRA_CHANNELS; i++) 14297f967c01SBen Hutchings if (efx->extra_channel_type[i]) 14307f967c01SBen Hutchings ++extra_channels; 14317f967c01SBen Hutchings 1432874aeea5SJeff Kirsher if (efx->interrupt_mode == EFX_INT_MODE_MSIX) { 1433874aeea5SJeff Kirsher struct msix_entry xentries[EFX_MAX_CHANNELS]; 1434a16e5b24SBen Hutchings unsigned int n_channels; 1435874aeea5SJeff Kirsher 1436a9a52506SBen Hutchings n_channels = efx_wanted_parallelism(efx); 1437b0fbdae1SShradha Shah if (efx_separate_tx_channels) 1438874aeea5SJeff Kirsher n_channels *= 2; 14397f967c01SBen Hutchings n_channels += extra_channels; 1440b105798fSBen Hutchings n_channels = min(n_channels, efx->max_channels); 1441874aeea5SJeff Kirsher 1442874aeea5SJeff Kirsher for (i = 0; i < n_channels; i++) 1443874aeea5SJeff Kirsher xentries[i].entry = i; 1444184603d8SAlexander Gordeev rc = pci_enable_msix_range(efx->pci_dev, 1445184603d8SAlexander Gordeev xentries, 1, n_channels); 1446184603d8SAlexander Gordeev if (rc < 0) { 1447184603d8SAlexander Gordeev /* Fall back to single channel MSI */ 1448184603d8SAlexander Gordeev netif_err(efx, drv, efx->net_dev, 1449184603d8SAlexander Gordeev "could not enable MSI-X\n"); 145062980cb6SAndrew Rybchenko if (efx->type->min_interrupt_mode >= EFX_INT_MODE_MSI) 145162980cb6SAndrew Rybchenko efx->interrupt_mode = EFX_INT_MODE_MSI; 145262980cb6SAndrew Rybchenko else 145362980cb6SAndrew Rybchenko return rc; 1454184603d8SAlexander Gordeev } else if (rc < n_channels) { 1455874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 1456874aeea5SJeff Kirsher "WARNING: Insufficient MSI-X vectors" 1457a16e5b24SBen Hutchings " available (%d < %u).\n", rc, n_channels); 1458874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 1459874aeea5SJeff Kirsher "WARNING: Performance may be reduced.\n"); 1460874aeea5SJeff Kirsher n_channels = rc; 1461874aeea5SJeff Kirsher } 1462874aeea5SJeff Kirsher 1463184603d8SAlexander Gordeev if (rc > 0) { 1464874aeea5SJeff Kirsher efx->n_channels = n_channels; 14657f967c01SBen Hutchings if (n_channels > extra_channels) 14667f967c01SBen Hutchings n_channels -= extra_channels; 1467b0fbdae1SShradha Shah if (efx_separate_tx_channels) { 1468b0fbdae1SShradha Shah efx->n_tx_channels = min(max(n_channels / 2, 1469b0fbdae1SShradha Shah 1U), 1470b0fbdae1SShradha Shah efx->max_tx_channels); 14717f967c01SBen Hutchings efx->n_rx_channels = max(n_channels - 14727f967c01SBen Hutchings efx->n_tx_channels, 14737f967c01SBen Hutchings 1U); 1474874aeea5SJeff Kirsher } else { 1475b0fbdae1SShradha Shah efx->n_tx_channels = min(n_channels, 1476b0fbdae1SShradha Shah efx->max_tx_channels); 14777f967c01SBen Hutchings efx->n_rx_channels = n_channels; 1478874aeea5SJeff Kirsher } 14797f967c01SBen Hutchings for (i = 0; i < efx->n_channels; i++) 1480874aeea5SJeff Kirsher efx_get_channel(efx, i)->irq = 1481874aeea5SJeff Kirsher xentries[i].vector; 1482874aeea5SJeff Kirsher } 1483874aeea5SJeff Kirsher } 1484874aeea5SJeff Kirsher 1485874aeea5SJeff Kirsher /* Try single interrupt MSI */ 1486874aeea5SJeff Kirsher if (efx->interrupt_mode == EFX_INT_MODE_MSI) { 1487874aeea5SJeff Kirsher efx->n_channels = 1; 1488874aeea5SJeff Kirsher efx->n_rx_channels = 1; 1489874aeea5SJeff Kirsher efx->n_tx_channels = 1; 1490874aeea5SJeff Kirsher rc = pci_enable_msi(efx->pci_dev); 1491874aeea5SJeff Kirsher if (rc == 0) { 1492874aeea5SJeff Kirsher efx_get_channel(efx, 0)->irq = efx->pci_dev->irq; 1493874aeea5SJeff Kirsher } else { 1494874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 1495874aeea5SJeff Kirsher "could not enable MSI\n"); 149662980cb6SAndrew Rybchenko if (efx->type->min_interrupt_mode >= EFX_INT_MODE_LEGACY) 1497874aeea5SJeff Kirsher efx->interrupt_mode = EFX_INT_MODE_LEGACY; 149862980cb6SAndrew Rybchenko else 149962980cb6SAndrew Rybchenko return rc; 1500874aeea5SJeff Kirsher } 1501874aeea5SJeff Kirsher } 1502874aeea5SJeff Kirsher 1503874aeea5SJeff Kirsher /* Assume legacy interrupts */ 1504874aeea5SJeff Kirsher if (efx->interrupt_mode == EFX_INT_MODE_LEGACY) { 1505b0fbdae1SShradha Shah efx->n_channels = 1 + (efx_separate_tx_channels ? 1 : 0); 1506874aeea5SJeff Kirsher efx->n_rx_channels = 1; 1507874aeea5SJeff Kirsher efx->n_tx_channels = 1; 1508874aeea5SJeff Kirsher efx->legacy_irq = efx->pci_dev->irq; 1509874aeea5SJeff Kirsher } 1510874aeea5SJeff Kirsher 15117f967c01SBen Hutchings /* Assign extra channels if possible */ 15122935e3c3SEdward Cree efx->n_extra_tx_channels = 0; 15137f967c01SBen Hutchings j = efx->n_channels; 15147f967c01SBen Hutchings for (i = 0; i < EFX_MAX_EXTRA_CHANNELS; i++) { 15157f967c01SBen Hutchings if (!efx->extra_channel_type[i]) 15167f967c01SBen Hutchings continue; 15177f967c01SBen Hutchings if (efx->interrupt_mode != EFX_INT_MODE_MSIX || 15187f967c01SBen Hutchings efx->n_channels <= extra_channels) { 15197f967c01SBen Hutchings efx->extra_channel_type[i]->handle_no_channel(efx); 15207f967c01SBen Hutchings } else { 15217f967c01SBen Hutchings --j; 15227f967c01SBen Hutchings efx_get_channel(efx, j)->type = 15237f967c01SBen Hutchings efx->extra_channel_type[i]; 15242935e3c3SEdward Cree if (efx_channel_has_tx_queues(efx_get_channel(efx, j))) 15252935e3c3SEdward Cree efx->n_extra_tx_channels++; 15267f967c01SBen Hutchings } 15277f967c01SBen Hutchings } 15287f967c01SBen Hutchings 1529cd2d5b52SBen Hutchings /* RSS might be usable on VFs even if it is disabled on the PF */ 15307fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 15317fa8d547SShradha Shah if (efx->type->sriov_wanted) { 1532327c685eSShradha Shah efx->rss_spread = ((efx->n_rx_channels > 1 || 1533d98a4ffeSShradha Shah !efx->type->sriov_wanted(efx)) ? 1534cd2d5b52SBen Hutchings efx->n_rx_channels : efx_vf_size(efx)); 15357fa8d547SShradha Shah return 0; 15367fa8d547SShradha Shah } 15377fa8d547SShradha Shah #endif 15387fa8d547SShradha Shah efx->rss_spread = efx->n_rx_channels; 1539cd2d5b52SBen Hutchings 1540874aeea5SJeff Kirsher return 0; 1541874aeea5SJeff Kirsher } 1542874aeea5SJeff Kirsher 1543261e4d96SJon Cooper static int efx_soft_enable_interrupts(struct efx_nic *efx) 1544d8291187SBen Hutchings { 1545261e4d96SJon Cooper struct efx_channel *channel, *end_channel; 1546261e4d96SJon Cooper int rc; 1547d8291187SBen Hutchings 1548d8291187SBen Hutchings BUG_ON(efx->state == STATE_DISABLED); 1549d8291187SBen Hutchings 1550d8291187SBen Hutchings efx->irq_soft_enabled = true; 1551d8291187SBen Hutchings smp_wmb(); 1552d8291187SBen Hutchings 1553d8291187SBen Hutchings efx_for_each_channel(channel, efx) { 1554261e4d96SJon Cooper if (!channel->type->keep_eventq) { 1555261e4d96SJon Cooper rc = efx_init_eventq(channel); 1556261e4d96SJon Cooper if (rc) 1557261e4d96SJon Cooper goto fail; 1558261e4d96SJon Cooper } 1559d8291187SBen Hutchings efx_start_eventq(channel); 1560d8291187SBen Hutchings } 1561d8291187SBen Hutchings 1562d8291187SBen Hutchings efx_mcdi_mode_event(efx); 1563261e4d96SJon Cooper 1564261e4d96SJon Cooper return 0; 1565261e4d96SJon Cooper fail: 1566261e4d96SJon Cooper end_channel = channel; 1567261e4d96SJon Cooper efx_for_each_channel(channel, efx) { 1568261e4d96SJon Cooper if (channel == end_channel) 1569261e4d96SJon Cooper break; 1570261e4d96SJon Cooper efx_stop_eventq(channel); 1571261e4d96SJon Cooper if (!channel->type->keep_eventq) 1572261e4d96SJon Cooper efx_fini_eventq(channel); 1573261e4d96SJon Cooper } 1574261e4d96SJon Cooper 1575261e4d96SJon Cooper return rc; 1576d8291187SBen Hutchings } 1577d8291187SBen Hutchings 1578d8291187SBen Hutchings static void efx_soft_disable_interrupts(struct efx_nic *efx) 1579d8291187SBen Hutchings { 1580d8291187SBen Hutchings struct efx_channel *channel; 1581d8291187SBen Hutchings 1582d8291187SBen Hutchings if (efx->state == STATE_DISABLED) 1583d8291187SBen Hutchings return; 1584d8291187SBen Hutchings 1585d8291187SBen Hutchings efx_mcdi_mode_poll(efx); 1586d8291187SBen Hutchings 1587d8291187SBen Hutchings efx->irq_soft_enabled = false; 1588d8291187SBen Hutchings smp_wmb(); 1589d8291187SBen Hutchings 1590d8291187SBen Hutchings if (efx->legacy_irq) 1591d8291187SBen Hutchings synchronize_irq(efx->legacy_irq); 1592d8291187SBen Hutchings 1593d8291187SBen Hutchings efx_for_each_channel(channel, efx) { 1594d8291187SBen Hutchings if (channel->irq) 1595d8291187SBen Hutchings synchronize_irq(channel->irq); 1596d8291187SBen Hutchings 1597d8291187SBen Hutchings efx_stop_eventq(channel); 1598d8291187SBen Hutchings if (!channel->type->keep_eventq) 1599d8291187SBen Hutchings efx_fini_eventq(channel); 1600d8291187SBen Hutchings } 1601cade715fSBen Hutchings 1602cade715fSBen Hutchings /* Flush the asynchronous MCDI request queue */ 1603cade715fSBen Hutchings efx_mcdi_flush_async(efx); 1604d8291187SBen Hutchings } 1605d8291187SBen Hutchings 1606261e4d96SJon Cooper static int efx_enable_interrupts(struct efx_nic *efx) 16079f2cb71cSBen Hutchings { 1608261e4d96SJon Cooper struct efx_channel *channel, *end_channel; 1609261e4d96SJon Cooper int rc; 16109f2cb71cSBen Hutchings 16118b7325b4SBen Hutchings BUG_ON(efx->state == STATE_DISABLED); 16128b7325b4SBen Hutchings 1613b28405b0SAlexandre Rames if (efx->eeh_disabled_legacy_irq) { 1614b28405b0SAlexandre Rames enable_irq(efx->legacy_irq); 1615b28405b0SAlexandre Rames efx->eeh_disabled_legacy_irq = false; 1616b28405b0SAlexandre Rames } 1617d8291187SBen Hutchings 161886094f7fSBen Hutchings efx->type->irq_enable_master(efx); 16199f2cb71cSBen Hutchings 16209f2cb71cSBen Hutchings efx_for_each_channel(channel, efx) { 1621261e4d96SJon Cooper if (channel->type->keep_eventq) { 1622261e4d96SJon Cooper rc = efx_init_eventq(channel); 1623261e4d96SJon Cooper if (rc) 1624261e4d96SJon Cooper goto fail; 1625261e4d96SJon Cooper } 16269f2cb71cSBen Hutchings } 16279f2cb71cSBen Hutchings 1628261e4d96SJon Cooper rc = efx_soft_enable_interrupts(efx); 1629261e4d96SJon Cooper if (rc) 1630261e4d96SJon Cooper goto fail; 1631261e4d96SJon Cooper 1632261e4d96SJon Cooper return 0; 1633261e4d96SJon Cooper 1634261e4d96SJon Cooper fail: 1635261e4d96SJon Cooper end_channel = channel; 1636261e4d96SJon Cooper efx_for_each_channel(channel, efx) { 1637261e4d96SJon Cooper if (channel == end_channel) 1638261e4d96SJon Cooper break; 1639261e4d96SJon Cooper if (channel->type->keep_eventq) 1640261e4d96SJon Cooper efx_fini_eventq(channel); 1641261e4d96SJon Cooper } 1642261e4d96SJon Cooper 1643261e4d96SJon Cooper efx->type->irq_disable_non_ev(efx); 1644261e4d96SJon Cooper 1645261e4d96SJon Cooper return rc; 16469f2cb71cSBen Hutchings } 16479f2cb71cSBen Hutchings 1648d8291187SBen Hutchings static void efx_disable_interrupts(struct efx_nic *efx) 16499f2cb71cSBen Hutchings { 16509f2cb71cSBen Hutchings struct efx_channel *channel; 16519f2cb71cSBen Hutchings 1652d8291187SBen Hutchings efx_soft_disable_interrupts(efx); 16539f2cb71cSBen Hutchings 16549f2cb71cSBen Hutchings efx_for_each_channel(channel, efx) { 1655d8291187SBen Hutchings if (channel->type->keep_eventq) 16569f2cb71cSBen Hutchings efx_fini_eventq(channel); 16579f2cb71cSBen Hutchings } 1658d8291187SBen Hutchings 165986094f7fSBen Hutchings efx->type->irq_disable_non_ev(efx); 16609f2cb71cSBen Hutchings } 16619f2cb71cSBen Hutchings 1662874aeea5SJeff Kirsher static void efx_remove_interrupts(struct efx_nic *efx) 1663874aeea5SJeff Kirsher { 1664874aeea5SJeff Kirsher struct efx_channel *channel; 1665874aeea5SJeff Kirsher 1666874aeea5SJeff Kirsher /* Remove MSI/MSI-X interrupts */ 1667874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) 1668874aeea5SJeff Kirsher channel->irq = 0; 1669874aeea5SJeff Kirsher pci_disable_msi(efx->pci_dev); 1670874aeea5SJeff Kirsher pci_disable_msix(efx->pci_dev); 1671874aeea5SJeff Kirsher 1672874aeea5SJeff Kirsher /* Remove legacy interrupt */ 1673874aeea5SJeff Kirsher efx->legacy_irq = 0; 1674874aeea5SJeff Kirsher } 1675874aeea5SJeff Kirsher 1676874aeea5SJeff Kirsher static void efx_set_channels(struct efx_nic *efx) 1677874aeea5SJeff Kirsher { 1678874aeea5SJeff Kirsher struct efx_channel *channel; 1679874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 1680874aeea5SJeff Kirsher 1681874aeea5SJeff Kirsher efx->tx_channel_offset = 1682b0fbdae1SShradha Shah efx_separate_tx_channels ? 1683b0fbdae1SShradha Shah efx->n_channels - efx->n_tx_channels : 0; 1684874aeea5SJeff Kirsher 168579d68b37SStuart Hodgson /* We need to mark which channels really have RX and TX 168679d68b37SStuart Hodgson * queues, and adjust the TX queue numbers if we have separate 1687874aeea5SJeff Kirsher * RX-only and TX-only channels. 1688874aeea5SJeff Kirsher */ 1689874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 169079d68b37SStuart Hodgson if (channel->channel < efx->n_rx_channels) 169179d68b37SStuart Hodgson channel->rx_queue.core_index = channel->channel; 169279d68b37SStuart Hodgson else 169379d68b37SStuart Hodgson channel->rx_queue.core_index = -1; 169479d68b37SStuart Hodgson 1695874aeea5SJeff Kirsher efx_for_each_channel_tx_queue(tx_queue, channel) 1696874aeea5SJeff Kirsher tx_queue->queue -= (efx->tx_channel_offset * 1697874aeea5SJeff Kirsher EFX_TXQ_TYPES); 1698874aeea5SJeff Kirsher } 1699874aeea5SJeff Kirsher } 1700874aeea5SJeff Kirsher 1701874aeea5SJeff Kirsher static int efx_probe_nic(struct efx_nic *efx) 1702874aeea5SJeff Kirsher { 1703874aeea5SJeff Kirsher int rc; 1704874aeea5SJeff Kirsher 1705874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, "creating NIC\n"); 1706874aeea5SJeff Kirsher 1707874aeea5SJeff Kirsher /* Carry out hardware-type specific initialisation */ 1708874aeea5SJeff Kirsher rc = efx->type->probe(efx); 1709874aeea5SJeff Kirsher if (rc) 1710874aeea5SJeff Kirsher return rc; 1711874aeea5SJeff Kirsher 1712b0fbdae1SShradha Shah do { 1713b0fbdae1SShradha Shah if (!efx->max_channels || !efx->max_tx_channels) { 1714b0fbdae1SShradha Shah netif_err(efx, drv, efx->net_dev, 1715b0fbdae1SShradha Shah "Insufficient resources to allocate" 1716b0fbdae1SShradha Shah " any channels\n"); 1717b0fbdae1SShradha Shah rc = -ENOSPC; 1718b0fbdae1SShradha Shah goto fail1; 1719b0fbdae1SShradha Shah } 1720b0fbdae1SShradha Shah 1721b0fbdae1SShradha Shah /* Determine the number of channels and queues by trying 1722b0fbdae1SShradha Shah * to hook in MSI-X interrupts. 1723b0fbdae1SShradha Shah */ 1724874aeea5SJeff Kirsher rc = efx_probe_interrupts(efx); 1725874aeea5SJeff Kirsher if (rc) 1726c15eed22SBen Hutchings goto fail1; 1727874aeea5SJeff Kirsher 172852ad762bSDaniel Pieczko efx_set_channels(efx); 172952ad762bSDaniel Pieczko 1730b0fbdae1SShradha Shah /* dimension_resources can fail with EAGAIN */ 1731c15eed22SBen Hutchings rc = efx->type->dimension_resources(efx); 1732b0fbdae1SShradha Shah if (rc != 0 && rc != -EAGAIN) 1733c15eed22SBen Hutchings goto fail2; 173428e47c49SBen Hutchings 1735b0fbdae1SShradha Shah if (rc == -EAGAIN) 1736b0fbdae1SShradha Shah /* try again with new max_channels */ 1737b0fbdae1SShradha Shah efx_remove_interrupts(efx); 1738b0fbdae1SShradha Shah 1739b0fbdae1SShradha Shah } while (rc == -EAGAIN); 1740b0fbdae1SShradha Shah 1741874aeea5SJeff Kirsher if (efx->n_channels > 1) 1742267c0157SJon Cooper netdev_rss_key_fill(&efx->rx_hash_key, 1743267c0157SJon Cooper sizeof(efx->rx_hash_key)); 1744267c0157SJon Cooper efx_set_default_rx_indir_table(efx); 1745874aeea5SJeff Kirsher 1746874aeea5SJeff Kirsher netif_set_real_num_tx_queues(efx->net_dev, efx->n_tx_channels); 1747874aeea5SJeff Kirsher netif_set_real_num_rx_queues(efx->net_dev, efx->n_rx_channels); 1748874aeea5SJeff Kirsher 1749874aeea5SJeff Kirsher /* Initialise the interrupt moderation settings */ 1750539de7c5SBert Kenward efx->irq_mod_step_us = DIV_ROUND_UP(efx->timer_quantum_ns, 1000); 17519e393b30SBen Hutchings efx_init_irq_moderation(efx, tx_irq_mod_usec, rx_irq_mod_usec, true, 17529e393b30SBen Hutchings true); 1753874aeea5SJeff Kirsher 1754874aeea5SJeff Kirsher return 0; 1755874aeea5SJeff Kirsher 1756c15eed22SBen Hutchings fail2: 1757c15eed22SBen Hutchings efx_remove_interrupts(efx); 1758c15eed22SBen Hutchings fail1: 1759874aeea5SJeff Kirsher efx->type->remove(efx); 1760874aeea5SJeff Kirsher return rc; 1761874aeea5SJeff Kirsher } 1762874aeea5SJeff Kirsher 1763874aeea5SJeff Kirsher static void efx_remove_nic(struct efx_nic *efx) 1764874aeea5SJeff Kirsher { 1765874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "destroying NIC\n"); 1766874aeea5SJeff Kirsher 1767874aeea5SJeff Kirsher efx_remove_interrupts(efx); 1768874aeea5SJeff Kirsher efx->type->remove(efx); 1769874aeea5SJeff Kirsher } 1770874aeea5SJeff Kirsher 1771add72477SBen Hutchings static int efx_probe_filters(struct efx_nic *efx) 1772add72477SBen Hutchings { 1773add72477SBen Hutchings int rc; 1774add72477SBen Hutchings 1775add72477SBen Hutchings spin_lock_init(&efx->filter_lock); 17760d322413SEdward Cree init_rwsem(&efx->filter_sem); 1777d248953aSMartin Habets mutex_lock(&efx->mac_lock); 17780d322413SEdward Cree down_write(&efx->filter_sem); 1779add72477SBen Hutchings rc = efx->type->filter_table_probe(efx); 1780add72477SBen Hutchings if (rc) 17810d322413SEdward Cree goto out_unlock; 1782add72477SBen Hutchings 1783add72477SBen Hutchings #ifdef CONFIG_RFS_ACCEL 1784add72477SBen Hutchings if (efx->type->offload_features & NETIF_F_NTUPLE) { 1785faf8dcc1SJon Cooper struct efx_channel *channel; 1786faf8dcc1SJon Cooper int i, success = 1; 1787faf8dcc1SJon Cooper 1788faf8dcc1SJon Cooper efx_for_each_channel(channel, efx) { 1789faf8dcc1SJon Cooper channel->rps_flow_id = 1790faf8dcc1SJon Cooper kcalloc(efx->type->max_rx_ip_filters, 1791faf8dcc1SJon Cooper sizeof(*channel->rps_flow_id), 1792add72477SBen Hutchings GFP_KERNEL); 1793faf8dcc1SJon Cooper if (!channel->rps_flow_id) 1794faf8dcc1SJon Cooper success = 0; 1795faf8dcc1SJon Cooper else 1796faf8dcc1SJon Cooper for (i = 0; 1797faf8dcc1SJon Cooper i < efx->type->max_rx_ip_filters; 1798faf8dcc1SJon Cooper ++i) 1799faf8dcc1SJon Cooper channel->rps_flow_id[i] = 1800faf8dcc1SJon Cooper RPS_FLOW_ID_INVALID; 1801faf8dcc1SJon Cooper } 1802faf8dcc1SJon Cooper 1803faf8dcc1SJon Cooper if (!success) { 1804faf8dcc1SJon Cooper efx_for_each_channel(channel, efx) 1805faf8dcc1SJon Cooper kfree(channel->rps_flow_id); 1806add72477SBen Hutchings efx->type->filter_table_remove(efx); 18070d322413SEdward Cree rc = -ENOMEM; 18080d322413SEdward Cree goto out_unlock; 1809add72477SBen Hutchings } 1810faf8dcc1SJon Cooper 1811faf8dcc1SJon Cooper efx->rps_expire_index = efx->rps_expire_channel = 0; 1812add72477SBen Hutchings } 1813add72477SBen Hutchings #endif 18140d322413SEdward Cree out_unlock: 18150d322413SEdward Cree up_write(&efx->filter_sem); 1816d248953aSMartin Habets mutex_unlock(&efx->mac_lock); 18170d322413SEdward Cree return rc; 1818add72477SBen Hutchings } 1819add72477SBen Hutchings 1820add72477SBen Hutchings static void efx_remove_filters(struct efx_nic *efx) 1821add72477SBen Hutchings { 1822add72477SBen Hutchings #ifdef CONFIG_RFS_ACCEL 1823faf8dcc1SJon Cooper struct efx_channel *channel; 1824faf8dcc1SJon Cooper 1825faf8dcc1SJon Cooper efx_for_each_channel(channel, efx) 1826faf8dcc1SJon Cooper kfree(channel->rps_flow_id); 1827add72477SBen Hutchings #endif 18280d322413SEdward Cree down_write(&efx->filter_sem); 1829add72477SBen Hutchings efx->type->filter_table_remove(efx); 18300d322413SEdward Cree up_write(&efx->filter_sem); 1831add72477SBen Hutchings } 1832add72477SBen Hutchings 1833add72477SBen Hutchings static void efx_restore_filters(struct efx_nic *efx) 1834add72477SBen Hutchings { 18350d322413SEdward Cree down_read(&efx->filter_sem); 1836add72477SBen Hutchings efx->type->filter_table_restore(efx); 18370d322413SEdward Cree up_read(&efx->filter_sem); 1838add72477SBen Hutchings } 1839add72477SBen Hutchings 1840874aeea5SJeff Kirsher /************************************************************************** 1841874aeea5SJeff Kirsher * 1842874aeea5SJeff Kirsher * NIC startup/shutdown 1843874aeea5SJeff Kirsher * 1844874aeea5SJeff Kirsher *************************************************************************/ 1845874aeea5SJeff Kirsher 1846874aeea5SJeff Kirsher static int efx_probe_all(struct efx_nic *efx) 1847874aeea5SJeff Kirsher { 1848874aeea5SJeff Kirsher int rc; 1849874aeea5SJeff Kirsher 1850874aeea5SJeff Kirsher rc = efx_probe_nic(efx); 1851874aeea5SJeff Kirsher if (rc) { 1852874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, "failed to create NIC\n"); 1853874aeea5SJeff Kirsher goto fail1; 1854874aeea5SJeff Kirsher } 1855874aeea5SJeff Kirsher 1856874aeea5SJeff Kirsher rc = efx_probe_port(efx); 1857874aeea5SJeff Kirsher if (rc) { 1858874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, "failed to create port\n"); 1859874aeea5SJeff Kirsher goto fail2; 1860874aeea5SJeff Kirsher } 1861874aeea5SJeff Kirsher 18627e6d06f0SBen Hutchings BUILD_BUG_ON(EFX_DEFAULT_DMAQ_SIZE < EFX_RXQ_MIN_ENT); 18637e6d06f0SBen Hutchings if (WARN_ON(EFX_DEFAULT_DMAQ_SIZE < EFX_TXQ_MIN_ENT(efx))) { 18647e6d06f0SBen Hutchings rc = -EINVAL; 18657e6d06f0SBen Hutchings goto fail3; 18667e6d06f0SBen Hutchings } 1867874aeea5SJeff Kirsher efx->rxq_entries = efx->txq_entries = EFX_DEFAULT_DMAQ_SIZE; 1868874aeea5SJeff Kirsher 18696d8aaaf6SDaniel Pieczko #ifdef CONFIG_SFC_SRIOV 18706d8aaaf6SDaniel Pieczko rc = efx->type->vswitching_probe(efx); 18716d8aaaf6SDaniel Pieczko if (rc) /* not fatal; the PF will still work fine */ 18726d8aaaf6SDaniel Pieczko netif_warn(efx, probe, efx->net_dev, 18736d8aaaf6SDaniel Pieczko "failed to setup vswitching rc=%d;" 18746d8aaaf6SDaniel Pieczko " VFs may not function\n", rc); 18756d8aaaf6SDaniel Pieczko #endif 18766d8aaaf6SDaniel Pieczko 1877874aeea5SJeff Kirsher rc = efx_probe_filters(efx); 1878874aeea5SJeff Kirsher if (rc) { 1879874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 1880874aeea5SJeff Kirsher "failed to create filter tables\n"); 18816d8aaaf6SDaniel Pieczko goto fail4; 1882874aeea5SJeff Kirsher } 1883874aeea5SJeff Kirsher 18847f967c01SBen Hutchings rc = efx_probe_channels(efx); 18857f967c01SBen Hutchings if (rc) 18866d8aaaf6SDaniel Pieczko goto fail5; 18877f967c01SBen Hutchings 1888874aeea5SJeff Kirsher return 0; 1889874aeea5SJeff Kirsher 18906d8aaaf6SDaniel Pieczko fail5: 18917f967c01SBen Hutchings efx_remove_filters(efx); 18926d8aaaf6SDaniel Pieczko fail4: 18936d8aaaf6SDaniel Pieczko #ifdef CONFIG_SFC_SRIOV 18946d8aaaf6SDaniel Pieczko efx->type->vswitching_remove(efx); 18956d8aaaf6SDaniel Pieczko #endif 1896874aeea5SJeff Kirsher fail3: 1897874aeea5SJeff Kirsher efx_remove_port(efx); 1898874aeea5SJeff Kirsher fail2: 1899874aeea5SJeff Kirsher efx_remove_nic(efx); 1900874aeea5SJeff Kirsher fail1: 1901874aeea5SJeff Kirsher return rc; 1902874aeea5SJeff Kirsher } 1903874aeea5SJeff Kirsher 19048b7325b4SBen Hutchings /* If the interface is supposed to be running but is not, start 19058b7325b4SBen Hutchings * the hardware and software data path, regular activity for the port 19068b7325b4SBen Hutchings * (MAC statistics, link polling, etc.) and schedule the port to be 19078b7325b4SBen Hutchings * reconfigured. Interrupts must already be enabled. This function 19088b7325b4SBen Hutchings * is safe to call multiple times, so long as the NIC is not disabled. 19098b7325b4SBen Hutchings * Requires the RTNL lock. 19109f2cb71cSBen Hutchings */ 1911874aeea5SJeff Kirsher static void efx_start_all(struct efx_nic *efx) 1912874aeea5SJeff Kirsher { 1913874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 19148b7325b4SBen Hutchings BUG_ON(efx->state == STATE_DISABLED); 1915874aeea5SJeff Kirsher 1916874aeea5SJeff Kirsher /* Check that it is appropriate to restart the interface. All 1917874aeea5SJeff Kirsher * of these flags are safe to read under just the rtnl lock */ 1918e283546cSEdward Cree if (efx->port_enabled || !netif_running(efx->net_dev) || 1919e283546cSEdward Cree efx->reset_pending) 1920874aeea5SJeff Kirsher return; 1921874aeea5SJeff Kirsher 1922874aeea5SJeff Kirsher efx_start_port(efx); 19239f2cb71cSBen Hutchings efx_start_datapath(efx); 1924874aeea5SJeff Kirsher 1925626950dbSAlexandre Rames /* Start the hardware monitor if there is one */ 1926626950dbSAlexandre Rames if (efx->type->monitor != NULL) 1927874aeea5SJeff Kirsher queue_delayed_work(efx->workqueue, &efx->monitor_work, 1928874aeea5SJeff Kirsher efx_monitor_interval); 1929626950dbSAlexandre Rames 19305a6681e2SEdward Cree /* Link state detection is normally event-driven; we have 1931626950dbSAlexandre Rames * to poll now because we could have missed a change 1932626950dbSAlexandre Rames */ 1933874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 1934874aeea5SJeff Kirsher if (efx->phy_op->poll(efx)) 1935874aeea5SJeff Kirsher efx_link_status_changed(efx); 1936874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 1937874aeea5SJeff Kirsher 1938874aeea5SJeff Kirsher efx->type->start_stats(efx); 1939f8f3b5aeSJon Cooper efx->type->pull_stats(efx); 1940f8f3b5aeSJon Cooper spin_lock_bh(&efx->stats_lock); 1941f8f3b5aeSJon Cooper efx->type->update_stats(efx, NULL, NULL); 1942f8f3b5aeSJon Cooper spin_unlock_bh(&efx->stats_lock); 1943874aeea5SJeff Kirsher } 1944874aeea5SJeff Kirsher 19458b7325b4SBen Hutchings /* Quiesce the hardware and software data path, and regular activity 19468b7325b4SBen Hutchings * for the port without bringing the link down. Safe to call multiple 19478b7325b4SBen Hutchings * times with the NIC in almost any state, but interrupts should be 19488b7325b4SBen Hutchings * enabled. Requires the RTNL lock. 19498b7325b4SBen Hutchings */ 1950874aeea5SJeff Kirsher static void efx_stop_all(struct efx_nic *efx) 1951874aeea5SJeff Kirsher { 1952874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 1953874aeea5SJeff Kirsher 1954874aeea5SJeff Kirsher /* port_enabled can be read safely under the rtnl lock */ 1955874aeea5SJeff Kirsher if (!efx->port_enabled) 1956874aeea5SJeff Kirsher return; 1957874aeea5SJeff Kirsher 1958f8f3b5aeSJon Cooper /* update stats before we go down so we can accurately count 1959f8f3b5aeSJon Cooper * rx_nodesc_drops 1960f8f3b5aeSJon Cooper */ 1961f8f3b5aeSJon Cooper efx->type->pull_stats(efx); 1962f8f3b5aeSJon Cooper spin_lock_bh(&efx->stats_lock); 1963f8f3b5aeSJon Cooper efx->type->update_stats(efx, NULL, NULL); 1964f8f3b5aeSJon Cooper spin_unlock_bh(&efx->stats_lock); 1965874aeea5SJeff Kirsher efx->type->stop_stats(efx); 1966874aeea5SJeff Kirsher efx_stop_port(efx); 1967874aeea5SJeff Kirsher 196829c69a48SBen Hutchings /* Stop the kernel transmit interface. This is only valid if 196929c69a48SBen Hutchings * the device is stopped or detached; otherwise the watchdog 197029c69a48SBen Hutchings * may fire immediately. 197129c69a48SBen Hutchings */ 197229c69a48SBen Hutchings WARN_ON(netif_running(efx->net_dev) && 197329c69a48SBen Hutchings netif_device_present(efx->net_dev)); 19749f2cb71cSBen Hutchings netif_tx_disable(efx->net_dev); 19759f2cb71cSBen Hutchings 19769f2cb71cSBen Hutchings efx_stop_datapath(efx); 1977874aeea5SJeff Kirsher } 1978874aeea5SJeff Kirsher 1979874aeea5SJeff Kirsher static void efx_remove_all(struct efx_nic *efx) 1980874aeea5SJeff Kirsher { 1981874aeea5SJeff Kirsher efx_remove_channels(efx); 19827f967c01SBen Hutchings efx_remove_filters(efx); 19836d8aaaf6SDaniel Pieczko #ifdef CONFIG_SFC_SRIOV 19846d8aaaf6SDaniel Pieczko efx->type->vswitching_remove(efx); 19856d8aaaf6SDaniel Pieczko #endif 1986874aeea5SJeff Kirsher efx_remove_port(efx); 1987874aeea5SJeff Kirsher efx_remove_nic(efx); 1988874aeea5SJeff Kirsher } 1989874aeea5SJeff Kirsher 1990874aeea5SJeff Kirsher /************************************************************************** 1991874aeea5SJeff Kirsher * 1992874aeea5SJeff Kirsher * Interrupt moderation 1993874aeea5SJeff Kirsher * 1994874aeea5SJeff Kirsher **************************************************************************/ 1995539de7c5SBert Kenward unsigned int efx_usecs_to_ticks(struct efx_nic *efx, unsigned int usecs) 1996874aeea5SJeff Kirsher { 1997b548f976SBen Hutchings if (usecs == 0) 1998b548f976SBen Hutchings return 0; 1999539de7c5SBert Kenward if (usecs * 1000 < efx->timer_quantum_ns) 2000874aeea5SJeff Kirsher return 1; /* never round down to 0 */ 2001539de7c5SBert Kenward return usecs * 1000 / efx->timer_quantum_ns; 2002539de7c5SBert Kenward } 2003539de7c5SBert Kenward 2004539de7c5SBert Kenward unsigned int efx_ticks_to_usecs(struct efx_nic *efx, unsigned int ticks) 2005539de7c5SBert Kenward { 2006539de7c5SBert Kenward /* We must round up when converting ticks to microseconds 2007539de7c5SBert Kenward * because we round down when converting the other way. 2008539de7c5SBert Kenward */ 2009539de7c5SBert Kenward return DIV_ROUND_UP(ticks * efx->timer_quantum_ns, 1000); 2010874aeea5SJeff Kirsher } 2011874aeea5SJeff Kirsher 2012874aeea5SJeff Kirsher /* Set interrupt moderation parameters */ 20139e393b30SBen Hutchings int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs, 20149e393b30SBen Hutchings unsigned int rx_usecs, bool rx_adaptive, 20159e393b30SBen Hutchings bool rx_may_override_tx) 2016874aeea5SJeff Kirsher { 2017874aeea5SJeff Kirsher struct efx_channel *channel; 2018d95e329aSBert Kenward unsigned int timer_max_us; 2019d95e329aSBert Kenward 2020874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 2021874aeea5SJeff Kirsher 2022d95e329aSBert Kenward timer_max_us = efx->timer_max_ns / 1000; 2023d95e329aSBert Kenward 2024d95e329aSBert Kenward if (tx_usecs > timer_max_us || rx_usecs > timer_max_us) 20259e393b30SBen Hutchings return -EINVAL; 20269e393b30SBen Hutchings 2027539de7c5SBert Kenward if (tx_usecs != rx_usecs && efx->tx_channel_offset == 0 && 20289e393b30SBen Hutchings !rx_may_override_tx) { 20299e393b30SBen Hutchings netif_err(efx, drv, efx->net_dev, "Channels are shared. " 20309e393b30SBen Hutchings "RX and TX IRQ moderation must be equal\n"); 20319e393b30SBen Hutchings return -EINVAL; 20329e393b30SBen Hutchings } 20339e393b30SBen Hutchings 2034874aeea5SJeff Kirsher efx->irq_rx_adaptive = rx_adaptive; 2035539de7c5SBert Kenward efx->irq_rx_moderation_us = rx_usecs; 2036874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 2037874aeea5SJeff Kirsher if (efx_channel_has_rx_queue(channel)) 2038539de7c5SBert Kenward channel->irq_moderation_us = rx_usecs; 2039874aeea5SJeff Kirsher else if (efx_channel_has_tx_queues(channel)) 2040539de7c5SBert Kenward channel->irq_moderation_us = tx_usecs; 2041874aeea5SJeff Kirsher } 20429e393b30SBen Hutchings 20439e393b30SBen Hutchings return 0; 2044874aeea5SJeff Kirsher } 2045874aeea5SJeff Kirsher 2046a0c4faf5SBen Hutchings void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs, 2047a0c4faf5SBen Hutchings unsigned int *rx_usecs, bool *rx_adaptive) 2048a0c4faf5SBen Hutchings { 2049a0c4faf5SBen Hutchings *rx_adaptive = efx->irq_rx_adaptive; 2050539de7c5SBert Kenward *rx_usecs = efx->irq_rx_moderation_us; 2051a0c4faf5SBen Hutchings 2052a0c4faf5SBen Hutchings /* If channels are shared between RX and TX, so is IRQ 2053a0c4faf5SBen Hutchings * moderation. Otherwise, IRQ moderation is the same for all 2054a0c4faf5SBen Hutchings * TX channels and is not adaptive. 2055a0c4faf5SBen Hutchings */ 2056539de7c5SBert Kenward if (efx->tx_channel_offset == 0) { 2057a0c4faf5SBen Hutchings *tx_usecs = *rx_usecs; 2058539de7c5SBert Kenward } else { 2059539de7c5SBert Kenward struct efx_channel *tx_channel; 2060539de7c5SBert Kenward 2061539de7c5SBert Kenward tx_channel = efx->channel[efx->tx_channel_offset]; 2062539de7c5SBert Kenward *tx_usecs = tx_channel->irq_moderation_us; 2063539de7c5SBert Kenward } 2064a0c4faf5SBen Hutchings } 2065a0c4faf5SBen Hutchings 2066874aeea5SJeff Kirsher /************************************************************************** 2067874aeea5SJeff Kirsher * 2068874aeea5SJeff Kirsher * Hardware monitor 2069874aeea5SJeff Kirsher * 2070874aeea5SJeff Kirsher **************************************************************************/ 2071874aeea5SJeff Kirsher 2072874aeea5SJeff Kirsher /* Run periodically off the general workqueue */ 2073874aeea5SJeff Kirsher static void efx_monitor(struct work_struct *data) 2074874aeea5SJeff Kirsher { 2075874aeea5SJeff Kirsher struct efx_nic *efx = container_of(data, struct efx_nic, 2076874aeea5SJeff Kirsher monitor_work.work); 2077874aeea5SJeff Kirsher 2078874aeea5SJeff Kirsher netif_vdbg(efx, timer, efx->net_dev, 2079874aeea5SJeff Kirsher "hardware monitor executing on CPU %d\n", 2080874aeea5SJeff Kirsher raw_smp_processor_id()); 2081874aeea5SJeff Kirsher BUG_ON(efx->type->monitor == NULL); 2082874aeea5SJeff Kirsher 2083874aeea5SJeff Kirsher /* If the mac_lock is already held then it is likely a port 2084874aeea5SJeff Kirsher * reconfiguration is already in place, which will likely do 2085874aeea5SJeff Kirsher * most of the work of monitor() anyway. */ 2086874aeea5SJeff Kirsher if (mutex_trylock(&efx->mac_lock)) { 2087874aeea5SJeff Kirsher if (efx->port_enabled) 2088874aeea5SJeff Kirsher efx->type->monitor(efx); 2089874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2090874aeea5SJeff Kirsher } 2091874aeea5SJeff Kirsher 2092874aeea5SJeff Kirsher queue_delayed_work(efx->workqueue, &efx->monitor_work, 2093874aeea5SJeff Kirsher efx_monitor_interval); 2094874aeea5SJeff Kirsher } 2095874aeea5SJeff Kirsher 2096874aeea5SJeff Kirsher /************************************************************************** 2097874aeea5SJeff Kirsher * 2098874aeea5SJeff Kirsher * ioctls 2099874aeea5SJeff Kirsher * 2100874aeea5SJeff Kirsher *************************************************************************/ 2101874aeea5SJeff Kirsher 2102874aeea5SJeff Kirsher /* Net device ioctl 2103874aeea5SJeff Kirsher * Context: process, rtnl_lock() held. 2104874aeea5SJeff Kirsher */ 2105874aeea5SJeff Kirsher static int efx_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd) 2106874aeea5SJeff Kirsher { 2107874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2108874aeea5SJeff Kirsher struct mii_ioctl_data *data = if_mii(ifr); 2109874aeea5SJeff Kirsher 21107c236c43SStuart Hodgson if (cmd == SIOCSHWTSTAMP) 2111433dc9b3SBen Hutchings return efx_ptp_set_ts_config(efx, ifr); 2112433dc9b3SBen Hutchings if (cmd == SIOCGHWTSTAMP) 2113433dc9b3SBen Hutchings return efx_ptp_get_ts_config(efx, ifr); 21147c236c43SStuart Hodgson 2115874aeea5SJeff Kirsher /* Convert phy_id from older PRTAD/DEVAD format */ 2116874aeea5SJeff Kirsher if ((cmd == SIOCGMIIREG || cmd == SIOCSMIIREG) && 2117874aeea5SJeff Kirsher (data->phy_id & 0xfc00) == 0x0400) 2118874aeea5SJeff Kirsher data->phy_id ^= MDIO_PHY_ID_C45 | 0x0400; 2119874aeea5SJeff Kirsher 2120874aeea5SJeff Kirsher return mdio_mii_ioctl(&efx->mdio, data, cmd); 2121874aeea5SJeff Kirsher } 2122874aeea5SJeff Kirsher 2123874aeea5SJeff Kirsher /************************************************************************** 2124874aeea5SJeff Kirsher * 2125874aeea5SJeff Kirsher * NAPI interface 2126874aeea5SJeff Kirsher * 2127874aeea5SJeff Kirsher **************************************************************************/ 2128874aeea5SJeff Kirsher 21297f967c01SBen Hutchings static void efx_init_napi_channel(struct efx_channel *channel) 2130874aeea5SJeff Kirsher { 21317f967c01SBen Hutchings struct efx_nic *efx = channel->efx; 2132874aeea5SJeff Kirsher 2133874aeea5SJeff Kirsher channel->napi_dev = efx->net_dev; 2134874aeea5SJeff Kirsher netif_napi_add(channel->napi_dev, &channel->napi_str, 2135874aeea5SJeff Kirsher efx_poll, napi_weight); 2136874aeea5SJeff Kirsher } 21377f967c01SBen Hutchings 21387f967c01SBen Hutchings static void efx_init_napi(struct efx_nic *efx) 21397f967c01SBen Hutchings { 21407f967c01SBen Hutchings struct efx_channel *channel; 21417f967c01SBen Hutchings 21427f967c01SBen Hutchings efx_for_each_channel(channel, efx) 21437f967c01SBen Hutchings efx_init_napi_channel(channel); 2144874aeea5SJeff Kirsher } 2145874aeea5SJeff Kirsher 2146874aeea5SJeff Kirsher static void efx_fini_napi_channel(struct efx_channel *channel) 2147874aeea5SJeff Kirsher { 2148973334a1SEric Dumazet if (channel->napi_dev) 2149874aeea5SJeff Kirsher netif_napi_del(&channel->napi_str); 2150973334a1SEric Dumazet 2151874aeea5SJeff Kirsher channel->napi_dev = NULL; 2152874aeea5SJeff Kirsher } 2153874aeea5SJeff Kirsher 2154874aeea5SJeff Kirsher static void efx_fini_napi(struct efx_nic *efx) 2155874aeea5SJeff Kirsher { 2156874aeea5SJeff Kirsher struct efx_channel *channel; 2157874aeea5SJeff Kirsher 2158874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) 2159874aeea5SJeff Kirsher efx_fini_napi_channel(channel); 2160874aeea5SJeff Kirsher } 2161874aeea5SJeff Kirsher 2162874aeea5SJeff Kirsher /************************************************************************** 2163874aeea5SJeff Kirsher * 2164874aeea5SJeff Kirsher * Kernel netpoll interface 2165874aeea5SJeff Kirsher * 2166874aeea5SJeff Kirsher *************************************************************************/ 2167874aeea5SJeff Kirsher 2168874aeea5SJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 2169874aeea5SJeff Kirsher 2170874aeea5SJeff Kirsher /* Although in the common case interrupts will be disabled, this is not 2171874aeea5SJeff Kirsher * guaranteed. However, all our work happens inside the NAPI callback, 2172874aeea5SJeff Kirsher * so no locking is required. 2173874aeea5SJeff Kirsher */ 2174874aeea5SJeff Kirsher static void efx_netpoll(struct net_device *net_dev) 2175874aeea5SJeff Kirsher { 2176874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2177874aeea5SJeff Kirsher struct efx_channel *channel; 2178874aeea5SJeff Kirsher 2179874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) 2180874aeea5SJeff Kirsher efx_schedule_channel(channel); 2181874aeea5SJeff Kirsher } 2182874aeea5SJeff Kirsher 2183874aeea5SJeff Kirsher #endif 2184874aeea5SJeff Kirsher 2185874aeea5SJeff Kirsher /************************************************************************** 2186874aeea5SJeff Kirsher * 2187874aeea5SJeff Kirsher * Kernel net device interface 2188874aeea5SJeff Kirsher * 2189874aeea5SJeff Kirsher *************************************************************************/ 2190874aeea5SJeff Kirsher 2191874aeea5SJeff Kirsher /* Context: process, rtnl_lock() held. */ 2192e340be92SShradha Shah int efx_net_open(struct net_device *net_dev) 2193874aeea5SJeff Kirsher { 2194874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 21958b7325b4SBen Hutchings int rc; 21968b7325b4SBen Hutchings 2197874aeea5SJeff Kirsher netif_dbg(efx, ifup, efx->net_dev, "opening device on CPU %d\n", 2198874aeea5SJeff Kirsher raw_smp_processor_id()); 2199874aeea5SJeff Kirsher 22008b7325b4SBen Hutchings rc = efx_check_disabled(efx); 22018b7325b4SBen Hutchings if (rc) 22028b7325b4SBen Hutchings return rc; 2203874aeea5SJeff Kirsher if (efx->phy_mode & PHY_MODE_SPECIAL) 2204874aeea5SJeff Kirsher return -EBUSY; 2205874aeea5SJeff Kirsher if (efx_mcdi_poll_reboot(efx) && efx_reset(efx, RESET_TYPE_ALL)) 2206874aeea5SJeff Kirsher return -EIO; 2207874aeea5SJeff Kirsher 2208874aeea5SJeff Kirsher /* Notify the kernel of the link state polled during driver load, 2209874aeea5SJeff Kirsher * before the monitor starts running */ 2210874aeea5SJeff Kirsher efx_link_status_changed(efx); 2211874aeea5SJeff Kirsher 2212874aeea5SJeff Kirsher efx_start_all(efx); 22139c568fd8SPeter Dunning if (efx->state == STATE_DISABLED || efx->reset_pending) 22149c568fd8SPeter Dunning netif_device_detach(efx->net_dev); 2215dd40781eSBen Hutchings efx_selftest_async_start(efx); 2216874aeea5SJeff Kirsher return 0; 2217874aeea5SJeff Kirsher } 2218874aeea5SJeff Kirsher 2219874aeea5SJeff Kirsher /* Context: process, rtnl_lock() held. 2220874aeea5SJeff Kirsher * Note that the kernel will ignore our return code; this method 2221874aeea5SJeff Kirsher * should really be a void. 2222874aeea5SJeff Kirsher */ 2223e340be92SShradha Shah int efx_net_stop(struct net_device *net_dev) 2224874aeea5SJeff Kirsher { 2225874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2226874aeea5SJeff Kirsher 2227874aeea5SJeff Kirsher netif_dbg(efx, ifdown, efx->net_dev, "closing on CPU %d\n", 2228874aeea5SJeff Kirsher raw_smp_processor_id()); 2229874aeea5SJeff Kirsher 2230874aeea5SJeff Kirsher /* Stop the device and flush all the channels */ 2231874aeea5SJeff Kirsher efx_stop_all(efx); 2232874aeea5SJeff Kirsher 2233874aeea5SJeff Kirsher return 0; 2234874aeea5SJeff Kirsher } 2235874aeea5SJeff Kirsher 2236874aeea5SJeff Kirsher /* Context: process, dev_base_lock or RTNL held, non-blocking. */ 2237bc1f4470Sstephen hemminger static void efx_net_stats(struct net_device *net_dev, 22382aa9ef11SBen Hutchings struct rtnl_link_stats64 *stats) 2239874aeea5SJeff Kirsher { 2240874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2241874aeea5SJeff Kirsher 2242874aeea5SJeff Kirsher spin_lock_bh(&efx->stats_lock); 2243cd0ecc9aSBen Hutchings efx->type->update_stats(efx, NULL, stats); 22441cb34522SBen Hutchings spin_unlock_bh(&efx->stats_lock); 2245874aeea5SJeff Kirsher } 2246874aeea5SJeff Kirsher 2247874aeea5SJeff Kirsher /* Context: netif_tx_lock held, BHs disabled. */ 2248874aeea5SJeff Kirsher static void efx_watchdog(struct net_device *net_dev) 2249874aeea5SJeff Kirsher { 2250874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2251874aeea5SJeff Kirsher 2252874aeea5SJeff Kirsher netif_err(efx, tx_err, efx->net_dev, 2253874aeea5SJeff Kirsher "TX stuck with port_enabled=%d: resetting channels\n", 2254874aeea5SJeff Kirsher efx->port_enabled); 2255874aeea5SJeff Kirsher 2256874aeea5SJeff Kirsher efx_schedule_reset(efx, RESET_TYPE_TX_WATCHDOG); 2257874aeea5SJeff Kirsher } 2258874aeea5SJeff Kirsher 2259874aeea5SJeff Kirsher 2260874aeea5SJeff Kirsher /* Context: process, rtnl_lock() held. */ 2261874aeea5SJeff Kirsher static int efx_change_mtu(struct net_device *net_dev, int new_mtu) 2262874aeea5SJeff Kirsher { 2263874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 22648b7325b4SBen Hutchings int rc; 2265874aeea5SJeff Kirsher 22668b7325b4SBen Hutchings rc = efx_check_disabled(efx); 22678b7325b4SBen Hutchings if (rc) 22688b7325b4SBen Hutchings return rc; 2269874aeea5SJeff Kirsher 2270874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "changing MTU to %d\n", new_mtu); 2271874aeea5SJeff Kirsher 227229c69a48SBen Hutchings efx_device_detach_sync(efx); 227329c69a48SBen Hutchings efx_stop_all(efx); 227429c69a48SBen Hutchings 2275874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 2276874aeea5SJeff Kirsher net_dev->mtu = new_mtu; 22770d322413SEdward Cree efx_mac_reconfigure(efx); 2278874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2279874aeea5SJeff Kirsher 2280874aeea5SJeff Kirsher efx_start_all(efx); 22819c568fd8SPeter Dunning efx_device_attach_if_not_resetting(efx); 22826c8eef4aSBen Hutchings return 0; 2283874aeea5SJeff Kirsher } 2284874aeea5SJeff Kirsher 2285874aeea5SJeff Kirsher static int efx_set_mac_address(struct net_device *net_dev, void *data) 2286874aeea5SJeff Kirsher { 2287874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2288874aeea5SJeff Kirsher struct sockaddr *addr = data; 2289e0b3ae30SBen Hutchings u8 *new_addr = addr->sa_data; 2290cfc77c2fSShradha Shah u8 old_addr[6]; 2291cfc77c2fSShradha Shah int rc; 2292874aeea5SJeff Kirsher 2293874aeea5SJeff Kirsher if (!is_valid_ether_addr(new_addr)) { 2294874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 2295874aeea5SJeff Kirsher "invalid ethernet MAC address requested: %pM\n", 2296874aeea5SJeff Kirsher new_addr); 2297504f9b5aSDanny Kukawka return -EADDRNOTAVAIL; 2298874aeea5SJeff Kirsher } 2299874aeea5SJeff Kirsher 2300cfc77c2fSShradha Shah /* save old address */ 2301cfc77c2fSShradha Shah ether_addr_copy(old_addr, net_dev->dev_addr); 2302cd84ff4dSEdward Cree ether_addr_copy(net_dev->dev_addr, new_addr); 2303910c8789SShradha Shah if (efx->type->set_mac_address) { 2304910c8789SShradha Shah rc = efx->type->set_mac_address(efx); 2305cfc77c2fSShradha Shah if (rc) { 2306cfc77c2fSShradha Shah ether_addr_copy(net_dev->dev_addr, old_addr); 2307cfc77c2fSShradha Shah return rc; 2308cfc77c2fSShradha Shah } 2309cfc77c2fSShradha Shah } 2310874aeea5SJeff Kirsher 2311874aeea5SJeff Kirsher /* Reconfigure the MAC */ 2312874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 23130d322413SEdward Cree efx_mac_reconfigure(efx); 2314874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2315874aeea5SJeff Kirsher 2316874aeea5SJeff Kirsher return 0; 2317874aeea5SJeff Kirsher } 2318874aeea5SJeff Kirsher 2319874aeea5SJeff Kirsher /* Context: netif_addr_lock held, BHs disabled. */ 23200fca8c97SBen Hutchings static void efx_set_rx_mode(struct net_device *net_dev) 2321874aeea5SJeff Kirsher { 2322874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 2323874aeea5SJeff Kirsher 2324874aeea5SJeff Kirsher if (efx->port_enabled) 2325874aeea5SJeff Kirsher queue_work(efx->workqueue, &efx->mac_work); 2326874aeea5SJeff Kirsher /* Otherwise efx_start_port() will do this */ 2327874aeea5SJeff Kirsher } 2328874aeea5SJeff Kirsher 2329c8f44affSMichał Mirosław static int efx_set_features(struct net_device *net_dev, netdev_features_t data) 2330874aeea5SJeff Kirsher { 2331874aeea5SJeff Kirsher struct efx_nic *efx = netdev_priv(net_dev); 23324a53ea8aSAndrew Rybchenko int rc; 2333874aeea5SJeff Kirsher 2334874aeea5SJeff Kirsher /* If disabling RX n-tuple filtering, clear existing filters */ 23354a53ea8aSAndrew Rybchenko if (net_dev->features & ~data & NETIF_F_NTUPLE) { 23364a53ea8aSAndrew Rybchenko rc = efx->type->filter_clear_rx(efx, EFX_FILTER_PRI_MANUAL); 23374a53ea8aSAndrew Rybchenko if (rc) 23384a53ea8aSAndrew Rybchenko return rc; 23394a53ea8aSAndrew Rybchenko } 23404a53ea8aSAndrew Rybchenko 23416978729fSEdward Cree /* If Rx VLAN filter is changed, update filters via mac_reconfigure. 23426978729fSEdward Cree * If rx-fcs is changed, mac_reconfigure updates that too. 23436978729fSEdward Cree */ 23446978729fSEdward Cree if ((net_dev->features ^ data) & (NETIF_F_HW_VLAN_CTAG_FILTER | 23456978729fSEdward Cree NETIF_F_RXFCS)) { 23464a53ea8aSAndrew Rybchenko /* efx_set_rx_mode() will schedule MAC work to update filters 23474a53ea8aSAndrew Rybchenko * when a new features are finally set in net_dev. 23484a53ea8aSAndrew Rybchenko */ 23494a53ea8aSAndrew Rybchenko efx_set_rx_mode(net_dev); 23504a53ea8aSAndrew Rybchenko } 2351874aeea5SJeff Kirsher 2352874aeea5SJeff Kirsher return 0; 2353874aeea5SJeff Kirsher } 2354874aeea5SJeff Kirsher 2355b40296fcSWei Yongjun static int efx_get_phys_port_id(struct net_device *net_dev, 235608a7b29bSBert Kenward struct netdev_phys_item_id *ppid) 235708a7b29bSBert Kenward { 235808a7b29bSBert Kenward struct efx_nic *efx = netdev_priv(net_dev); 235908a7b29bSBert Kenward 236008a7b29bSBert Kenward if (efx->type->get_phys_port_id) 236108a7b29bSBert Kenward return efx->type->get_phys_port_id(efx, ppid); 236208a7b29bSBert Kenward else 236308a7b29bSBert Kenward return -EOPNOTSUPP; 236408a7b29bSBert Kenward } 236508a7b29bSBert Kenward 2366ac019f08SBert Kenward static int efx_get_phys_port_name(struct net_device *net_dev, 2367ac019f08SBert Kenward char *name, size_t len) 2368ac019f08SBert Kenward { 2369ac019f08SBert Kenward struct efx_nic *efx = netdev_priv(net_dev); 2370ac019f08SBert Kenward 2371ac019f08SBert Kenward if (snprintf(name, len, "p%u", efx->port_num) >= len) 2372ac019f08SBert Kenward return -EINVAL; 2373ac019f08SBert Kenward return 0; 2374ac019f08SBert Kenward } 2375ac019f08SBert Kenward 23764a53ea8aSAndrew Rybchenko static int efx_vlan_rx_add_vid(struct net_device *net_dev, __be16 proto, u16 vid) 23774a53ea8aSAndrew Rybchenko { 23784a53ea8aSAndrew Rybchenko struct efx_nic *efx = netdev_priv(net_dev); 23794a53ea8aSAndrew Rybchenko 23804a53ea8aSAndrew Rybchenko if (efx->type->vlan_rx_add_vid) 23814a53ea8aSAndrew Rybchenko return efx->type->vlan_rx_add_vid(efx, proto, vid); 23824a53ea8aSAndrew Rybchenko else 23834a53ea8aSAndrew Rybchenko return -EOPNOTSUPP; 23844a53ea8aSAndrew Rybchenko } 23854a53ea8aSAndrew Rybchenko 23864a53ea8aSAndrew Rybchenko static int efx_vlan_rx_kill_vid(struct net_device *net_dev, __be16 proto, u16 vid) 23874a53ea8aSAndrew Rybchenko { 23884a53ea8aSAndrew Rybchenko struct efx_nic *efx = netdev_priv(net_dev); 23894a53ea8aSAndrew Rybchenko 23904a53ea8aSAndrew Rybchenko if (efx->type->vlan_rx_kill_vid) 23914a53ea8aSAndrew Rybchenko return efx->type->vlan_rx_kill_vid(efx, proto, vid); 23924a53ea8aSAndrew Rybchenko else 23934a53ea8aSAndrew Rybchenko return -EOPNOTSUPP; 23944a53ea8aSAndrew Rybchenko } 23954a53ea8aSAndrew Rybchenko 2396e5fbd977SJon Cooper static int efx_udp_tunnel_type_map(enum udp_parsable_tunnel_type in) 2397e5fbd977SJon Cooper { 2398e5fbd977SJon Cooper switch (in) { 2399e5fbd977SJon Cooper case UDP_TUNNEL_TYPE_VXLAN: 2400e5fbd977SJon Cooper return TUNNEL_ENCAP_UDP_PORT_ENTRY_VXLAN; 2401e5fbd977SJon Cooper case UDP_TUNNEL_TYPE_GENEVE: 2402e5fbd977SJon Cooper return TUNNEL_ENCAP_UDP_PORT_ENTRY_GENEVE; 2403e5fbd977SJon Cooper default: 2404e5fbd977SJon Cooper return -1; 2405e5fbd977SJon Cooper } 2406e5fbd977SJon Cooper } 2407e5fbd977SJon Cooper 2408e5fbd977SJon Cooper static void efx_udp_tunnel_add(struct net_device *dev, struct udp_tunnel_info *ti) 2409e5fbd977SJon Cooper { 2410e5fbd977SJon Cooper struct efx_nic *efx = netdev_priv(dev); 2411e5fbd977SJon Cooper struct efx_udp_tunnel tnl; 2412e5fbd977SJon Cooper int efx_tunnel_type; 2413e5fbd977SJon Cooper 2414e5fbd977SJon Cooper efx_tunnel_type = efx_udp_tunnel_type_map(ti->type); 2415e5fbd977SJon Cooper if (efx_tunnel_type < 0) 2416e5fbd977SJon Cooper return; 2417e5fbd977SJon Cooper 2418e5fbd977SJon Cooper tnl.type = (u16)efx_tunnel_type; 2419e5fbd977SJon Cooper tnl.port = ti->port; 2420e5fbd977SJon Cooper 2421e5fbd977SJon Cooper if (efx->type->udp_tnl_add_port) 2422e5fbd977SJon Cooper (void)efx->type->udp_tnl_add_port(efx, tnl); 2423e5fbd977SJon Cooper } 2424e5fbd977SJon Cooper 2425e5fbd977SJon Cooper static void efx_udp_tunnel_del(struct net_device *dev, struct udp_tunnel_info *ti) 2426e5fbd977SJon Cooper { 2427e5fbd977SJon Cooper struct efx_nic *efx = netdev_priv(dev); 2428e5fbd977SJon Cooper struct efx_udp_tunnel tnl; 2429e5fbd977SJon Cooper int efx_tunnel_type; 2430e5fbd977SJon Cooper 2431e5fbd977SJon Cooper efx_tunnel_type = efx_udp_tunnel_type_map(ti->type); 2432e5fbd977SJon Cooper if (efx_tunnel_type < 0) 2433e5fbd977SJon Cooper return; 2434e5fbd977SJon Cooper 2435e5fbd977SJon Cooper tnl.type = (u16)efx_tunnel_type; 2436e5fbd977SJon Cooper tnl.port = ti->port; 2437e5fbd977SJon Cooper 2438c04ca616SDan Carpenter if (efx->type->udp_tnl_del_port) 2439e5fbd977SJon Cooper (void)efx->type->udp_tnl_del_port(efx, tnl); 2440e5fbd977SJon Cooper } 2441e5fbd977SJon Cooper 24427fa8d547SShradha Shah static const struct net_device_ops efx_netdev_ops = { 2443874aeea5SJeff Kirsher .ndo_open = efx_net_open, 2444874aeea5SJeff Kirsher .ndo_stop = efx_net_stop, 2445874aeea5SJeff Kirsher .ndo_get_stats64 = efx_net_stats, 2446874aeea5SJeff Kirsher .ndo_tx_timeout = efx_watchdog, 2447874aeea5SJeff Kirsher .ndo_start_xmit = efx_hard_start_xmit, 2448874aeea5SJeff Kirsher .ndo_validate_addr = eth_validate_addr, 2449874aeea5SJeff Kirsher .ndo_do_ioctl = efx_ioctl, 2450874aeea5SJeff Kirsher .ndo_change_mtu = efx_change_mtu, 2451874aeea5SJeff Kirsher .ndo_set_mac_address = efx_set_mac_address, 24520fca8c97SBen Hutchings .ndo_set_rx_mode = efx_set_rx_mode, 2453874aeea5SJeff Kirsher .ndo_set_features = efx_set_features, 24544a53ea8aSAndrew Rybchenko .ndo_vlan_rx_add_vid = efx_vlan_rx_add_vid, 24554a53ea8aSAndrew Rybchenko .ndo_vlan_rx_kill_vid = efx_vlan_rx_kill_vid, 2456cd2d5b52SBen Hutchings #ifdef CONFIG_SFC_SRIOV 24577fa8d547SShradha Shah .ndo_set_vf_mac = efx_sriov_set_vf_mac, 24587fa8d547SShradha Shah .ndo_set_vf_vlan = efx_sriov_set_vf_vlan, 24597fa8d547SShradha Shah .ndo_set_vf_spoofchk = efx_sriov_set_vf_spoofchk, 24607fa8d547SShradha Shah .ndo_get_vf_config = efx_sriov_get_vf_config, 24614392dc69SEdward Cree .ndo_set_vf_link_state = efx_sriov_set_vf_link_state, 2462cd2d5b52SBen Hutchings #endif 246308a7b29bSBert Kenward .ndo_get_phys_port_id = efx_get_phys_port_id, 2464ac019f08SBert Kenward .ndo_get_phys_port_name = efx_get_phys_port_name, 2465874aeea5SJeff Kirsher #ifdef CONFIG_NET_POLL_CONTROLLER 2466874aeea5SJeff Kirsher .ndo_poll_controller = efx_netpoll, 2467874aeea5SJeff Kirsher #endif 2468874aeea5SJeff Kirsher .ndo_setup_tc = efx_setup_tc, 2469874aeea5SJeff Kirsher #ifdef CONFIG_RFS_ACCEL 2470874aeea5SJeff Kirsher .ndo_rx_flow_steer = efx_filter_rfs, 2471874aeea5SJeff Kirsher #endif 2472e5fbd977SJon Cooper .ndo_udp_tunnel_add = efx_udp_tunnel_add, 2473e5fbd977SJon Cooper .ndo_udp_tunnel_del = efx_udp_tunnel_del, 2474874aeea5SJeff Kirsher }; 2475874aeea5SJeff Kirsher 2476874aeea5SJeff Kirsher static void efx_update_name(struct efx_nic *efx) 2477874aeea5SJeff Kirsher { 2478874aeea5SJeff Kirsher strcpy(efx->name, efx->net_dev->name); 2479874aeea5SJeff Kirsher efx_mtd_rename(efx); 2480874aeea5SJeff Kirsher efx_set_channel_names(efx); 2481874aeea5SJeff Kirsher } 2482874aeea5SJeff Kirsher 2483874aeea5SJeff Kirsher static int efx_netdev_event(struct notifier_block *this, 2484874aeea5SJeff Kirsher unsigned long event, void *ptr) 2485874aeea5SJeff Kirsher { 2486351638e7SJiri Pirko struct net_device *net_dev = netdev_notifier_info_to_dev(ptr); 2487874aeea5SJeff Kirsher 24887fa8d547SShradha Shah if ((net_dev->netdev_ops == &efx_netdev_ops) && 2489874aeea5SJeff Kirsher event == NETDEV_CHANGENAME) 2490874aeea5SJeff Kirsher efx_update_name(netdev_priv(net_dev)); 2491874aeea5SJeff Kirsher 2492874aeea5SJeff Kirsher return NOTIFY_DONE; 2493874aeea5SJeff Kirsher } 2494874aeea5SJeff Kirsher 2495874aeea5SJeff Kirsher static struct notifier_block efx_netdev_notifier = { 2496874aeea5SJeff Kirsher .notifier_call = efx_netdev_event, 2497874aeea5SJeff Kirsher }; 2498874aeea5SJeff Kirsher 2499874aeea5SJeff Kirsher static ssize_t 2500874aeea5SJeff Kirsher show_phy_type(struct device *dev, struct device_attribute *attr, char *buf) 2501874aeea5SJeff Kirsher { 2502874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 2503874aeea5SJeff Kirsher return sprintf(buf, "%d\n", efx->phy_type); 2504874aeea5SJeff Kirsher } 2505776fbcc9SBen Hutchings static DEVICE_ATTR(phy_type, 0444, show_phy_type, NULL); 2506874aeea5SJeff Kirsher 2507e7fef9b4SEdward Cree #ifdef CONFIG_SFC_MCDI_LOGGING 2508e7fef9b4SEdward Cree static ssize_t show_mcdi_log(struct device *dev, struct device_attribute *attr, 2509e7fef9b4SEdward Cree char *buf) 2510e7fef9b4SEdward Cree { 2511e7fef9b4SEdward Cree struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 2512e7fef9b4SEdward Cree struct efx_mcdi_iface *mcdi = efx_mcdi(efx); 2513e7fef9b4SEdward Cree 2514e7fef9b4SEdward Cree return scnprintf(buf, PAGE_SIZE, "%d\n", mcdi->logging_enabled); 2515e7fef9b4SEdward Cree } 2516e7fef9b4SEdward Cree static ssize_t set_mcdi_log(struct device *dev, struct device_attribute *attr, 2517e7fef9b4SEdward Cree const char *buf, size_t count) 2518e7fef9b4SEdward Cree { 2519e7fef9b4SEdward Cree struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 2520e7fef9b4SEdward Cree struct efx_mcdi_iface *mcdi = efx_mcdi(efx); 2521e7fef9b4SEdward Cree bool enable = count > 0 && *buf != '0'; 2522e7fef9b4SEdward Cree 2523e7fef9b4SEdward Cree mcdi->logging_enabled = enable; 2524e7fef9b4SEdward Cree return count; 2525e7fef9b4SEdward Cree } 2526e7fef9b4SEdward Cree static DEVICE_ATTR(mcdi_logging, 0644, show_mcdi_log, set_mcdi_log); 2527e7fef9b4SEdward Cree #endif 2528e7fef9b4SEdward Cree 2529874aeea5SJeff Kirsher static int efx_register_netdev(struct efx_nic *efx) 2530874aeea5SJeff Kirsher { 2531874aeea5SJeff Kirsher struct net_device *net_dev = efx->net_dev; 2532874aeea5SJeff Kirsher struct efx_channel *channel; 2533874aeea5SJeff Kirsher int rc; 2534874aeea5SJeff Kirsher 2535874aeea5SJeff Kirsher net_dev->watchdog_timeo = 5 * HZ; 2536874aeea5SJeff Kirsher net_dev->irq = efx->pci_dev->irq; 25377fa8d547SShradha Shah net_dev->netdev_ops = &efx_netdev_ops; 25387fa8d547SShradha Shah if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) 25398127d661SBen Hutchings net_dev->priv_flags |= IFF_UNICAST_FLT; 25407ad24ea4SWilfried Klaebe net_dev->ethtool_ops = &efx_ethtool_ops; 25417e6d06f0SBen Hutchings net_dev->gso_max_segs = EFX_TSO_MAX_SEGS; 2542cd94e519SBert Kenward net_dev->min_mtu = EFX_MIN_MTU; 2543cd94e519SBert Kenward net_dev->max_mtu = EFX_MAX_MTU; 2544874aeea5SJeff Kirsher 2545874aeea5SJeff Kirsher rtnl_lock(); 2546874aeea5SJeff Kirsher 25477153f623SBen Hutchings /* Enable resets to be scheduled and check whether any were 25487153f623SBen Hutchings * already requested. If so, the NIC is probably hosed so we 25497153f623SBen Hutchings * abort. 25507153f623SBen Hutchings */ 25517153f623SBen Hutchings efx->state = STATE_READY; 25527153f623SBen Hutchings smp_mb(); /* ensure we change state before checking reset_pending */ 25537153f623SBen Hutchings if (efx->reset_pending) { 25547153f623SBen Hutchings netif_err(efx, probe, efx->net_dev, 25557153f623SBen Hutchings "aborting probe due to scheduled reset\n"); 25567153f623SBen Hutchings rc = -EIO; 25577153f623SBen Hutchings goto fail_locked; 25587153f623SBen Hutchings } 25597153f623SBen Hutchings 2560874aeea5SJeff Kirsher rc = dev_alloc_name(net_dev, net_dev->name); 2561874aeea5SJeff Kirsher if (rc < 0) 2562874aeea5SJeff Kirsher goto fail_locked; 2563874aeea5SJeff Kirsher efx_update_name(efx); 2564874aeea5SJeff Kirsher 25658f8b3d51SBen Hutchings /* Always start with carrier off; PHY events will detect the link */ 25668f8b3d51SBen Hutchings netif_carrier_off(net_dev); 25678f8b3d51SBen Hutchings 2568874aeea5SJeff Kirsher rc = register_netdevice(net_dev); 2569874aeea5SJeff Kirsher if (rc) 2570874aeea5SJeff Kirsher goto fail_locked; 2571874aeea5SJeff Kirsher 2572874aeea5SJeff Kirsher efx_for_each_channel(channel, efx) { 2573874aeea5SJeff Kirsher struct efx_tx_queue *tx_queue; 2574874aeea5SJeff Kirsher efx_for_each_channel_tx_queue(tx_queue, channel) 2575874aeea5SJeff Kirsher efx_init_tx_queue_core_txq(tx_queue); 2576874aeea5SJeff Kirsher } 2577874aeea5SJeff Kirsher 25780bcf4a64SBen Hutchings efx_associate(efx); 25790bcf4a64SBen Hutchings 2580874aeea5SJeff Kirsher rtnl_unlock(); 2581874aeea5SJeff Kirsher 2582874aeea5SJeff Kirsher rc = device_create_file(&efx->pci_dev->dev, &dev_attr_phy_type); 2583874aeea5SJeff Kirsher if (rc) { 2584874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 2585874aeea5SJeff Kirsher "failed to init net dev attributes\n"); 2586874aeea5SJeff Kirsher goto fail_registered; 2587874aeea5SJeff Kirsher } 2588e7fef9b4SEdward Cree #ifdef CONFIG_SFC_MCDI_LOGGING 2589e7fef9b4SEdward Cree rc = device_create_file(&efx->pci_dev->dev, &dev_attr_mcdi_logging); 2590e7fef9b4SEdward Cree if (rc) { 2591e7fef9b4SEdward Cree netif_err(efx, drv, efx->net_dev, 2592e7fef9b4SEdward Cree "failed to init net dev attributes\n"); 2593e7fef9b4SEdward Cree goto fail_attr_mcdi_logging; 2594e7fef9b4SEdward Cree } 2595e7fef9b4SEdward Cree #endif 2596874aeea5SJeff Kirsher 2597874aeea5SJeff Kirsher return 0; 2598874aeea5SJeff Kirsher 2599e7fef9b4SEdward Cree #ifdef CONFIG_SFC_MCDI_LOGGING 2600e7fef9b4SEdward Cree fail_attr_mcdi_logging: 2601e7fef9b4SEdward Cree device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_type); 2602e7fef9b4SEdward Cree #endif 26037153f623SBen Hutchings fail_registered: 26047153f623SBen Hutchings rtnl_lock(); 26050bcf4a64SBen Hutchings efx_dissociate(efx); 26067153f623SBen Hutchings unregister_netdevice(net_dev); 2607874aeea5SJeff Kirsher fail_locked: 26087153f623SBen Hutchings efx->state = STATE_UNINIT; 2609874aeea5SJeff Kirsher rtnl_unlock(); 2610874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, "could not register net dev\n"); 2611874aeea5SJeff Kirsher return rc; 2612874aeea5SJeff Kirsher } 2613874aeea5SJeff Kirsher 2614874aeea5SJeff Kirsher static void efx_unregister_netdev(struct efx_nic *efx) 2615874aeea5SJeff Kirsher { 2616874aeea5SJeff Kirsher if (!efx->net_dev) 2617874aeea5SJeff Kirsher return; 2618874aeea5SJeff Kirsher 2619874aeea5SJeff Kirsher BUG_ON(netdev_priv(efx->net_dev) != efx); 2620874aeea5SJeff Kirsher 2621e7fef9b4SEdward Cree if (efx_dev_registered(efx)) { 2622874aeea5SJeff Kirsher strlcpy(efx->name, pci_name(efx->pci_dev), sizeof(efx->name)); 2623e7fef9b4SEdward Cree #ifdef CONFIG_SFC_MCDI_LOGGING 2624e7fef9b4SEdward Cree device_remove_file(&efx->pci_dev->dev, &dev_attr_mcdi_logging); 2625e7fef9b4SEdward Cree #endif 2626874aeea5SJeff Kirsher device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_type); 2627e7fef9b4SEdward Cree unregister_netdev(efx->net_dev); 2628e7fef9b4SEdward Cree } 2629874aeea5SJeff Kirsher } 2630874aeea5SJeff Kirsher 2631874aeea5SJeff Kirsher /************************************************************************** 2632874aeea5SJeff Kirsher * 2633874aeea5SJeff Kirsher * Device reset and suspend 2634874aeea5SJeff Kirsher * 2635874aeea5SJeff Kirsher **************************************************************************/ 2636874aeea5SJeff Kirsher 2637874aeea5SJeff Kirsher /* Tears down the entire software state and most of the hardware state 2638874aeea5SJeff Kirsher * before reset. */ 2639874aeea5SJeff Kirsher void efx_reset_down(struct efx_nic *efx, enum reset_type method) 2640874aeea5SJeff Kirsher { 2641874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 2642874aeea5SJeff Kirsher 2643e283546cSEdward Cree if (method == RESET_TYPE_MCDI_TIMEOUT) 2644e283546cSEdward Cree efx->type->prepare_flr(efx); 2645e283546cSEdward Cree 2646874aeea5SJeff Kirsher efx_stop_all(efx); 2647d8291187SBen Hutchings efx_disable_interrupts(efx); 26485642ceefSBen Hutchings 26495642ceefSBen Hutchings mutex_lock(&efx->mac_lock); 2650087e9025SJon Cooper if (efx->port_initialized && method != RESET_TYPE_INVISIBLE && 2651087e9025SJon Cooper method != RESET_TYPE_DATAPATH) 2652874aeea5SJeff Kirsher efx->phy_op->fini(efx); 2653874aeea5SJeff Kirsher efx->type->fini(efx); 2654874aeea5SJeff Kirsher } 2655874aeea5SJeff Kirsher 2656874aeea5SJeff Kirsher /* This function will always ensure that the locks acquired in 2657874aeea5SJeff Kirsher * efx_reset_down() are released. A failure return code indicates 2658874aeea5SJeff Kirsher * that we were unable to reinitialise the hardware, and the 2659874aeea5SJeff Kirsher * driver should be disabled. If ok is false, then the rx and tx 2660874aeea5SJeff Kirsher * engines are not restarted, pending a RESET_DISABLE. */ 2661874aeea5SJeff Kirsher int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok) 2662874aeea5SJeff Kirsher { 2663874aeea5SJeff Kirsher int rc; 2664874aeea5SJeff Kirsher 2665874aeea5SJeff Kirsher EFX_ASSERT_RESET_SERIALISED(efx); 2666874aeea5SJeff Kirsher 2667e283546cSEdward Cree if (method == RESET_TYPE_MCDI_TIMEOUT) 2668e283546cSEdward Cree efx->type->finish_flr(efx); 2669e283546cSEdward Cree 2670e283546cSEdward Cree /* Ensure that SRAM is initialised even if we're disabling the device */ 2671874aeea5SJeff Kirsher rc = efx->type->init(efx); 2672874aeea5SJeff Kirsher if (rc) { 2673874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, "failed to initialise NIC\n"); 2674874aeea5SJeff Kirsher goto fail; 2675874aeea5SJeff Kirsher } 2676874aeea5SJeff Kirsher 2677874aeea5SJeff Kirsher if (!ok) 2678874aeea5SJeff Kirsher goto fail; 2679874aeea5SJeff Kirsher 2680087e9025SJon Cooper if (efx->port_initialized && method != RESET_TYPE_INVISIBLE && 2681087e9025SJon Cooper method != RESET_TYPE_DATAPATH) { 2682874aeea5SJeff Kirsher rc = efx->phy_op->init(efx); 2683874aeea5SJeff Kirsher if (rc) 2684874aeea5SJeff Kirsher goto fail; 2685267d9d73SEdward Cree rc = efx->phy_op->reconfigure(efx); 2686267d9d73SEdward Cree if (rc && rc != -EPERM) 2687874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, 2688874aeea5SJeff Kirsher "could not restore PHY settings\n"); 2689874aeea5SJeff Kirsher } 2690874aeea5SJeff Kirsher 2691261e4d96SJon Cooper rc = efx_enable_interrupts(efx); 2692261e4d96SJon Cooper if (rc) 2693261e4d96SJon Cooper goto fail; 26946d8aaaf6SDaniel Pieczko 26956d8aaaf6SDaniel Pieczko #ifdef CONFIG_SFC_SRIOV 26966d8aaaf6SDaniel Pieczko rc = efx->type->vswitching_restore(efx); 26976d8aaaf6SDaniel Pieczko if (rc) /* not fatal; the PF will still work fine */ 26986d8aaaf6SDaniel Pieczko netif_warn(efx, probe, efx->net_dev, 26996d8aaaf6SDaniel Pieczko "failed to restore vswitching rc=%d;" 27006d8aaaf6SDaniel Pieczko " VFs may not function\n", rc); 27016d8aaaf6SDaniel Pieczko #endif 27026d8aaaf6SDaniel Pieczko 27030d322413SEdward Cree down_read(&efx->filter_sem); 2704874aeea5SJeff Kirsher efx_restore_filters(efx); 27050d322413SEdward Cree up_read(&efx->filter_sem); 27067fa8d547SShradha Shah if (efx->type->sriov_reset) 2707d98a4ffeSShradha Shah efx->type->sriov_reset(efx); 2708874aeea5SJeff Kirsher 2709874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2710874aeea5SJeff Kirsher 2711874aeea5SJeff Kirsher efx_start_all(efx); 2712874aeea5SJeff Kirsher 2713e5fbd977SJon Cooper if (efx->type->udp_tnl_push_ports) 2714e5fbd977SJon Cooper efx->type->udp_tnl_push_ports(efx); 2715e5fbd977SJon Cooper 2716874aeea5SJeff Kirsher return 0; 2717874aeea5SJeff Kirsher 2718874aeea5SJeff Kirsher fail: 2719874aeea5SJeff Kirsher efx->port_initialized = false; 2720874aeea5SJeff Kirsher 2721874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 2722874aeea5SJeff Kirsher 2723874aeea5SJeff Kirsher return rc; 2724874aeea5SJeff Kirsher } 2725874aeea5SJeff Kirsher 2726874aeea5SJeff Kirsher /* Reset the NIC using the specified method. Note that the reset may 2727874aeea5SJeff Kirsher * fail, in which case the card will be left in an unusable state. 2728874aeea5SJeff Kirsher * 2729874aeea5SJeff Kirsher * Caller must hold the rtnl_lock. 2730874aeea5SJeff Kirsher */ 2731874aeea5SJeff Kirsher int efx_reset(struct efx_nic *efx, enum reset_type method) 2732874aeea5SJeff Kirsher { 2733874aeea5SJeff Kirsher int rc, rc2; 2734874aeea5SJeff Kirsher bool disabled; 2735874aeea5SJeff Kirsher 2736874aeea5SJeff Kirsher netif_info(efx, drv, efx->net_dev, "resetting (%s)\n", 2737874aeea5SJeff Kirsher RESET_TYPE(method)); 2738874aeea5SJeff Kirsher 2739c2f3b8e3SDaniel Pieczko efx_device_detach_sync(efx); 2740874aeea5SJeff Kirsher efx_reset_down(efx, method); 2741874aeea5SJeff Kirsher 2742874aeea5SJeff Kirsher rc = efx->type->reset(efx, method); 2743874aeea5SJeff Kirsher if (rc) { 2744874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, "failed to reset hardware\n"); 2745874aeea5SJeff Kirsher goto out; 2746874aeea5SJeff Kirsher } 2747874aeea5SJeff Kirsher 2748874aeea5SJeff Kirsher /* Clear flags for the scopes we covered. We assume the NIC and 2749874aeea5SJeff Kirsher * driver are now quiescent so that there is no race here. 2750874aeea5SJeff Kirsher */ 2751e283546cSEdward Cree if (method < RESET_TYPE_MAX_METHOD) 2752874aeea5SJeff Kirsher efx->reset_pending &= -(1 << (method + 1)); 2753e283546cSEdward Cree else /* it doesn't fit into the well-ordered scope hierarchy */ 2754e283546cSEdward Cree __clear_bit(method, &efx->reset_pending); 2755874aeea5SJeff Kirsher 2756874aeea5SJeff Kirsher /* Reinitialise bus-mastering, which may have been turned off before 2757874aeea5SJeff Kirsher * the reset was scheduled. This is still appropriate, even in the 2758874aeea5SJeff Kirsher * RESET_TYPE_DISABLE since this driver generally assumes the hardware 2759874aeea5SJeff Kirsher * can respond to requests. */ 2760874aeea5SJeff Kirsher pci_set_master(efx->pci_dev); 2761874aeea5SJeff Kirsher 2762874aeea5SJeff Kirsher out: 2763874aeea5SJeff Kirsher /* Leave device stopped if necessary */ 2764626950dbSAlexandre Rames disabled = rc || 2765626950dbSAlexandre Rames method == RESET_TYPE_DISABLE || 2766626950dbSAlexandre Rames method == RESET_TYPE_RECOVER_OR_DISABLE; 2767874aeea5SJeff Kirsher rc2 = efx_reset_up(efx, method, !disabled); 2768874aeea5SJeff Kirsher if (rc2) { 2769874aeea5SJeff Kirsher disabled = true; 2770874aeea5SJeff Kirsher if (!rc) 2771874aeea5SJeff Kirsher rc = rc2; 2772874aeea5SJeff Kirsher } 2773874aeea5SJeff Kirsher 2774874aeea5SJeff Kirsher if (disabled) { 2775874aeea5SJeff Kirsher dev_close(efx->net_dev); 2776874aeea5SJeff Kirsher netif_err(efx, drv, efx->net_dev, "has been disabled\n"); 2777874aeea5SJeff Kirsher efx->state = STATE_DISABLED; 2778874aeea5SJeff Kirsher } else { 2779874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "reset complete\n"); 27809c568fd8SPeter Dunning efx_device_attach_if_not_resetting(efx); 2781874aeea5SJeff Kirsher } 2782874aeea5SJeff Kirsher return rc; 2783874aeea5SJeff Kirsher } 2784874aeea5SJeff Kirsher 2785626950dbSAlexandre Rames /* Try recovery mechanisms. 2786626950dbSAlexandre Rames * For now only EEH is supported. 2787626950dbSAlexandre Rames * Returns 0 if the recovery mechanisms are unsuccessful. 2788626950dbSAlexandre Rames * Returns a non-zero value otherwise. 2789626950dbSAlexandre Rames */ 2790b28405b0SAlexandre Rames int efx_try_recovery(struct efx_nic *efx) 2791626950dbSAlexandre Rames { 2792626950dbSAlexandre Rames #ifdef CONFIG_EEH 2793626950dbSAlexandre Rames /* A PCI error can occur and not be seen by EEH because nothing 2794626950dbSAlexandre Rames * happens on the PCI bus. In this case the driver may fail and 2795626950dbSAlexandre Rames * schedule a 'recover or reset', leading to this recovery handler. 2796626950dbSAlexandre Rames * Manually call the eeh failure check function. 2797626950dbSAlexandre Rames */ 279812a89dbaSBenjamin Herrenschmidt struct eeh_dev *eehdev = pci_dev_to_eeh_dev(efx->pci_dev); 2799626950dbSAlexandre Rames if (eeh_dev_check_failure(eehdev)) { 2800626950dbSAlexandre Rames /* The EEH mechanisms will handle the error and reset the 2801626950dbSAlexandre Rames * device if necessary. 2802626950dbSAlexandre Rames */ 2803626950dbSAlexandre Rames return 1; 2804626950dbSAlexandre Rames } 2805626950dbSAlexandre Rames #endif 2806626950dbSAlexandre Rames return 0; 2807626950dbSAlexandre Rames } 2808626950dbSAlexandre Rames 280974cd60a4SJon Cooper static void efx_wait_for_bist_end(struct efx_nic *efx) 281074cd60a4SJon Cooper { 281174cd60a4SJon Cooper int i; 281274cd60a4SJon Cooper 281374cd60a4SJon Cooper for (i = 0; i < BIST_WAIT_DELAY_COUNT; ++i) { 281474cd60a4SJon Cooper if (efx_mcdi_poll_reboot(efx)) 281574cd60a4SJon Cooper goto out; 281674cd60a4SJon Cooper msleep(BIST_WAIT_DELAY_MS); 281774cd60a4SJon Cooper } 281874cd60a4SJon Cooper 281974cd60a4SJon Cooper netif_err(efx, drv, efx->net_dev, "Warning: No MC reboot after BIST mode\n"); 282074cd60a4SJon Cooper out: 282174cd60a4SJon Cooper /* Either way unset the BIST flag. If we found no reboot we probably 282274cd60a4SJon Cooper * won't recover, but we should try. 282374cd60a4SJon Cooper */ 282474cd60a4SJon Cooper efx->mc_bist_for_other_fn = false; 282574cd60a4SJon Cooper } 282674cd60a4SJon Cooper 2827874aeea5SJeff Kirsher /* The worker thread exists so that code that cannot sleep can 2828874aeea5SJeff Kirsher * schedule a reset for later. 2829874aeea5SJeff Kirsher */ 2830874aeea5SJeff Kirsher static void efx_reset_work(struct work_struct *data) 2831874aeea5SJeff Kirsher { 2832874aeea5SJeff Kirsher struct efx_nic *efx = container_of(data, struct efx_nic, reset_work); 2833626950dbSAlexandre Rames unsigned long pending; 2834626950dbSAlexandre Rames enum reset_type method; 2835626950dbSAlexandre Rames 28366aa7de05SMark Rutland pending = READ_ONCE(efx->reset_pending); 2837626950dbSAlexandre Rames method = fls(pending) - 1; 2838626950dbSAlexandre Rames 283974cd60a4SJon Cooper if (method == RESET_TYPE_MC_BIST) 284074cd60a4SJon Cooper efx_wait_for_bist_end(efx); 284174cd60a4SJon Cooper 2842626950dbSAlexandre Rames if ((method == RESET_TYPE_RECOVER_OR_DISABLE || 2843626950dbSAlexandre Rames method == RESET_TYPE_RECOVER_OR_ALL) && 2844626950dbSAlexandre Rames efx_try_recovery(efx)) 2845626950dbSAlexandre Rames return; 2846874aeea5SJeff Kirsher 2847874aeea5SJeff Kirsher if (!pending) 2848874aeea5SJeff Kirsher return; 2849874aeea5SJeff Kirsher 2850874aeea5SJeff Kirsher rtnl_lock(); 28517153f623SBen Hutchings 28527153f623SBen Hutchings /* We checked the state in efx_schedule_reset() but it may 28537153f623SBen Hutchings * have changed by now. Now that we have the RTNL lock, 28547153f623SBen Hutchings * it cannot change again. 28557153f623SBen Hutchings */ 28567153f623SBen Hutchings if (efx->state == STATE_READY) 2857626950dbSAlexandre Rames (void)efx_reset(efx, method); 28587153f623SBen Hutchings 2859874aeea5SJeff Kirsher rtnl_unlock(); 2860874aeea5SJeff Kirsher } 2861874aeea5SJeff Kirsher 2862874aeea5SJeff Kirsher void efx_schedule_reset(struct efx_nic *efx, enum reset_type type) 2863874aeea5SJeff Kirsher { 2864874aeea5SJeff Kirsher enum reset_type method; 2865874aeea5SJeff Kirsher 2866626950dbSAlexandre Rames if (efx->state == STATE_RECOVERY) { 2867626950dbSAlexandre Rames netif_dbg(efx, drv, efx->net_dev, 2868626950dbSAlexandre Rames "recovering: skip scheduling %s reset\n", 2869626950dbSAlexandre Rames RESET_TYPE(type)); 2870626950dbSAlexandre Rames return; 2871626950dbSAlexandre Rames } 2872626950dbSAlexandre Rames 2873874aeea5SJeff Kirsher switch (type) { 2874874aeea5SJeff Kirsher case RESET_TYPE_INVISIBLE: 2875874aeea5SJeff Kirsher case RESET_TYPE_ALL: 2876626950dbSAlexandre Rames case RESET_TYPE_RECOVER_OR_ALL: 2877874aeea5SJeff Kirsher case RESET_TYPE_WORLD: 2878874aeea5SJeff Kirsher case RESET_TYPE_DISABLE: 2879626950dbSAlexandre Rames case RESET_TYPE_RECOVER_OR_DISABLE: 2880087e9025SJon Cooper case RESET_TYPE_DATAPATH: 288174cd60a4SJon Cooper case RESET_TYPE_MC_BIST: 2882e283546cSEdward Cree case RESET_TYPE_MCDI_TIMEOUT: 2883874aeea5SJeff Kirsher method = type; 2884874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "scheduling %s reset\n", 2885874aeea5SJeff Kirsher RESET_TYPE(method)); 2886874aeea5SJeff Kirsher break; 2887874aeea5SJeff Kirsher default: 2888874aeea5SJeff Kirsher method = efx->type->map_reset_reason(type); 2889874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, 2890874aeea5SJeff Kirsher "scheduling %s reset for %s\n", 2891874aeea5SJeff Kirsher RESET_TYPE(method), RESET_TYPE(type)); 2892874aeea5SJeff Kirsher break; 2893874aeea5SJeff Kirsher } 2894874aeea5SJeff Kirsher 2895874aeea5SJeff Kirsher set_bit(method, &efx->reset_pending); 28967153f623SBen Hutchings smp_mb(); /* ensure we change reset_pending before checking state */ 28977153f623SBen Hutchings 28987153f623SBen Hutchings /* If we're not READY then just leave the flags set as the cue 28997153f623SBen Hutchings * to abort probing or reschedule the reset later. 29007153f623SBen Hutchings */ 29016aa7de05SMark Rutland if (READ_ONCE(efx->state) != STATE_READY) 29027153f623SBen Hutchings return; 2903874aeea5SJeff Kirsher 2904874aeea5SJeff Kirsher /* efx_process_channel() will no longer read events once a 2905874aeea5SJeff Kirsher * reset is scheduled. So switch back to poll'd MCDI completions. */ 2906874aeea5SJeff Kirsher efx_mcdi_mode_poll(efx); 2907874aeea5SJeff Kirsher 2908874aeea5SJeff Kirsher queue_work(reset_workqueue, &efx->reset_work); 2909874aeea5SJeff Kirsher } 2910874aeea5SJeff Kirsher 2911874aeea5SJeff Kirsher /************************************************************************** 2912874aeea5SJeff Kirsher * 2913874aeea5SJeff Kirsher * List of NICs we support 2914874aeea5SJeff Kirsher * 2915874aeea5SJeff Kirsher **************************************************************************/ 2916874aeea5SJeff Kirsher 2917874aeea5SJeff Kirsher /* PCI device ID table */ 29189baa3c34SBenoit Taine static const struct pci_device_id efx_pci_table[] = { 2919547c474fSBen Hutchings {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0803), /* SFC9020 */ 2920874aeea5SJeff Kirsher .driver_data = (unsigned long) &siena_a0_nic_type}, 2921547c474fSBen Hutchings {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0813), /* SFL9021 */ 2922874aeea5SJeff Kirsher .driver_data = (unsigned long) &siena_a0_nic_type}, 29238127d661SBen Hutchings {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0903), /* SFC9120 PF */ 29248127d661SBen Hutchings .driver_data = (unsigned long) &efx_hunt_a0_nic_type}, 29256f7f8aa6SShradha Shah {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1903), /* SFC9120 VF */ 29266f7f8aa6SShradha Shah .driver_data = (unsigned long) &efx_hunt_a0_vf_nic_type}, 29273b06a00eSMateusz Wrzesinski {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0923), /* SFC9140 PF */ 29283b06a00eSMateusz Wrzesinski .driver_data = (unsigned long) &efx_hunt_a0_nic_type}, 2929dd248f1bSBert Kenward {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1923), /* SFC9140 VF */ 2930dd248f1bSBert Kenward .driver_data = (unsigned long) &efx_hunt_a0_vf_nic_type}, 2931dd248f1bSBert Kenward {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0a03), /* SFC9220 PF */ 2932dd248f1bSBert Kenward .driver_data = (unsigned long) &efx_hunt_a0_nic_type}, 2933dd248f1bSBert Kenward {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1a03), /* SFC9220 VF */ 2934dd248f1bSBert Kenward .driver_data = (unsigned long) &efx_hunt_a0_vf_nic_type}, 2935aae5a316SEdward Cree {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0b03), /* SFC9250 PF */ 2936aae5a316SEdward Cree .driver_data = (unsigned long) &efx_hunt_a0_nic_type}, 2937aae5a316SEdward Cree {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1b03), /* SFC9250 VF */ 2938aae5a316SEdward Cree .driver_data = (unsigned long) &efx_hunt_a0_vf_nic_type}, 2939874aeea5SJeff Kirsher {0} /* end of list */ 2940874aeea5SJeff Kirsher }; 2941874aeea5SJeff Kirsher 2942874aeea5SJeff Kirsher /************************************************************************** 2943874aeea5SJeff Kirsher * 2944874aeea5SJeff Kirsher * Dummy PHY/MAC operations 2945874aeea5SJeff Kirsher * 2946874aeea5SJeff Kirsher * Can be used for some unimplemented operations 2947874aeea5SJeff Kirsher * Needed so all function pointers are valid and do not have to be tested 2948874aeea5SJeff Kirsher * before use 2949874aeea5SJeff Kirsher * 2950874aeea5SJeff Kirsher **************************************************************************/ 2951874aeea5SJeff Kirsher int efx_port_dummy_op_int(struct efx_nic *efx) 2952874aeea5SJeff Kirsher { 2953874aeea5SJeff Kirsher return 0; 2954874aeea5SJeff Kirsher } 2955874aeea5SJeff Kirsher void efx_port_dummy_op_void(struct efx_nic *efx) {} 2956874aeea5SJeff Kirsher 2957874aeea5SJeff Kirsher static bool efx_port_dummy_op_poll(struct efx_nic *efx) 2958874aeea5SJeff Kirsher { 2959874aeea5SJeff Kirsher return false; 2960874aeea5SJeff Kirsher } 2961874aeea5SJeff Kirsher 2962874aeea5SJeff Kirsher static const struct efx_phy_operations efx_dummy_phy_operations = { 2963874aeea5SJeff Kirsher .init = efx_port_dummy_op_int, 2964874aeea5SJeff Kirsher .reconfigure = efx_port_dummy_op_int, 2965874aeea5SJeff Kirsher .poll = efx_port_dummy_op_poll, 2966874aeea5SJeff Kirsher .fini = efx_port_dummy_op_void, 2967874aeea5SJeff Kirsher }; 2968874aeea5SJeff Kirsher 2969874aeea5SJeff Kirsher /************************************************************************** 2970874aeea5SJeff Kirsher * 2971874aeea5SJeff Kirsher * Data housekeeping 2972874aeea5SJeff Kirsher * 2973874aeea5SJeff Kirsher **************************************************************************/ 2974874aeea5SJeff Kirsher 2975874aeea5SJeff Kirsher /* This zeroes out and then fills in the invariants in a struct 2976874aeea5SJeff Kirsher * efx_nic (including all sub-structures). 2977874aeea5SJeff Kirsher */ 2978adeb15aaSBen Hutchings static int efx_init_struct(struct efx_nic *efx, 2979874aeea5SJeff Kirsher struct pci_dev *pci_dev, struct net_device *net_dev) 2980874aeea5SJeff Kirsher { 29816f9f6ec2SAndrew Rybchenko int rc = -ENOMEM, i; 2982874aeea5SJeff Kirsher 2983874aeea5SJeff Kirsher /* Initialise common structures */ 29840bcf4a64SBen Hutchings INIT_LIST_HEAD(&efx->node); 29850bcf4a64SBen Hutchings INIT_LIST_HEAD(&efx->secondary_list); 2986874aeea5SJeff Kirsher spin_lock_init(&efx->biu_lock); 2987874aeea5SJeff Kirsher #ifdef CONFIG_SFC_MTD 2988874aeea5SJeff Kirsher INIT_LIST_HEAD(&efx->mtd_list); 2989874aeea5SJeff Kirsher #endif 2990874aeea5SJeff Kirsher INIT_WORK(&efx->reset_work, efx_reset_work); 2991874aeea5SJeff Kirsher INIT_DELAYED_WORK(&efx->monitor_work, efx_monitor); 2992dd40781eSBen Hutchings INIT_DELAYED_WORK(&efx->selftest_work, efx_selftest_async_work); 2993874aeea5SJeff Kirsher efx->pci_dev = pci_dev; 2994874aeea5SJeff Kirsher efx->msg_enable = debug; 2995f16aeea0SBen Hutchings efx->state = STATE_UNINIT; 2996874aeea5SJeff Kirsher strlcpy(efx->name, pci_name(pci_dev), sizeof(efx->name)); 2997874aeea5SJeff Kirsher 2998874aeea5SJeff Kirsher efx->net_dev = net_dev; 299943a3739dSJon Cooper efx->rx_prefix_size = efx->type->rx_prefix_size; 30002ec03014SAndrew Rybchenko efx->rx_ip_align = 30012ec03014SAndrew Rybchenko NET_IP_ALIGN ? (efx->rx_prefix_size + NET_IP_ALIGN) % 4 : 0; 300243a3739dSJon Cooper efx->rx_packet_hash_offset = 300343a3739dSJon Cooper efx->type->rx_hash_offset - efx->type->rx_prefix_size; 3004bd9a265dSJon Cooper efx->rx_packet_ts_offset = 3005bd9a265dSJon Cooper efx->type->rx_ts_offset - efx->type->rx_prefix_size; 3006874aeea5SJeff Kirsher spin_lock_init(&efx->stats_lock); 300771827443SEdward Cree efx->vi_stride = EFX_DEFAULT_VI_STRIDE; 3008c1be4821SEdward Cree efx->num_mac_stats = MC_CMD_MAC_NSTATS; 3009c1be4821SEdward Cree BUILD_BUG_ON(MC_CMD_MAC_NSTATS - 1 != MC_CMD_MAC_GENERATION_END); 3010874aeea5SJeff Kirsher mutex_init(&efx->mac_lock); 3011874aeea5SJeff Kirsher efx->phy_op = &efx_dummy_phy_operations; 3012874aeea5SJeff Kirsher efx->mdio.dev = net_dev; 3013874aeea5SJeff Kirsher INIT_WORK(&efx->mac_work, efx_mac_work); 30149f2cb71cSBen Hutchings init_waitqueue_head(&efx->flush_wq); 3015874aeea5SJeff Kirsher 3016874aeea5SJeff Kirsher for (i = 0; i < EFX_MAX_CHANNELS; i++) { 3017874aeea5SJeff Kirsher efx->channel[i] = efx_alloc_channel(efx, i, NULL); 3018874aeea5SJeff Kirsher if (!efx->channel[i]) 3019874aeea5SJeff Kirsher goto fail; 3020d8291187SBen Hutchings efx->msi_context[i].efx = efx; 3021d8291187SBen Hutchings efx->msi_context[i].index = i; 3022874aeea5SJeff Kirsher } 3023874aeea5SJeff Kirsher 3024874aeea5SJeff Kirsher /* Higher numbered interrupt modes are less capable! */ 30256f9f6ec2SAndrew Rybchenko if (WARN_ON_ONCE(efx->type->max_interrupt_mode > 30266f9f6ec2SAndrew Rybchenko efx->type->min_interrupt_mode)) { 30276f9f6ec2SAndrew Rybchenko rc = -EIO; 30286f9f6ec2SAndrew Rybchenko goto fail; 30296f9f6ec2SAndrew Rybchenko } 3030874aeea5SJeff Kirsher efx->interrupt_mode = max(efx->type->max_interrupt_mode, 3031874aeea5SJeff Kirsher interrupt_mode); 30326f9f6ec2SAndrew Rybchenko efx->interrupt_mode = min(efx->type->min_interrupt_mode, 30336f9f6ec2SAndrew Rybchenko interrupt_mode); 3034874aeea5SJeff Kirsher 3035874aeea5SJeff Kirsher /* Would be good to use the net_dev name, but we're too early */ 3036874aeea5SJeff Kirsher snprintf(efx->workqueue_name, sizeof(efx->workqueue_name), "sfc%s", 3037874aeea5SJeff Kirsher pci_name(pci_dev)); 3038874aeea5SJeff Kirsher efx->workqueue = create_singlethread_workqueue(efx->workqueue_name); 3039874aeea5SJeff Kirsher if (!efx->workqueue) 3040874aeea5SJeff Kirsher goto fail; 3041874aeea5SJeff Kirsher 3042874aeea5SJeff Kirsher return 0; 3043874aeea5SJeff Kirsher 3044874aeea5SJeff Kirsher fail: 3045874aeea5SJeff Kirsher efx_fini_struct(efx); 30466f9f6ec2SAndrew Rybchenko return rc; 3047874aeea5SJeff Kirsher } 3048874aeea5SJeff Kirsher 3049874aeea5SJeff Kirsher static void efx_fini_struct(struct efx_nic *efx) 3050874aeea5SJeff Kirsher { 3051874aeea5SJeff Kirsher int i; 3052874aeea5SJeff Kirsher 3053874aeea5SJeff Kirsher for (i = 0; i < EFX_MAX_CHANNELS; i++) 3054874aeea5SJeff Kirsher kfree(efx->channel[i]); 3055874aeea5SJeff Kirsher 3056ef215e64SBen Hutchings kfree(efx->vpd_sn); 3057ef215e64SBen Hutchings 3058874aeea5SJeff Kirsher if (efx->workqueue) { 3059874aeea5SJeff Kirsher destroy_workqueue(efx->workqueue); 3060874aeea5SJeff Kirsher efx->workqueue = NULL; 3061874aeea5SJeff Kirsher } 3062874aeea5SJeff Kirsher } 3063874aeea5SJeff Kirsher 3064e4d112e4SEdward Cree void efx_update_sw_stats(struct efx_nic *efx, u64 *stats) 3065e4d112e4SEdward Cree { 3066e4d112e4SEdward Cree u64 n_rx_nodesc_trunc = 0; 3067e4d112e4SEdward Cree struct efx_channel *channel; 3068e4d112e4SEdward Cree 3069e4d112e4SEdward Cree efx_for_each_channel(channel, efx) 3070e4d112e4SEdward Cree n_rx_nodesc_trunc += channel->n_rx_nodesc_trunc; 3071e4d112e4SEdward Cree stats[GENERIC_STAT_rx_nodesc_trunc] = n_rx_nodesc_trunc; 3072e4d112e4SEdward Cree stats[GENERIC_STAT_rx_noskb_drops] = atomic_read(&efx->n_rx_noskb_drops); 3073e4d112e4SEdward Cree } 3074e4d112e4SEdward Cree 3075874aeea5SJeff Kirsher /************************************************************************** 3076874aeea5SJeff Kirsher * 3077874aeea5SJeff Kirsher * PCI interface 3078874aeea5SJeff Kirsher * 3079874aeea5SJeff Kirsher **************************************************************************/ 3080874aeea5SJeff Kirsher 3081874aeea5SJeff Kirsher /* Main body of final NIC shutdown code 3082874aeea5SJeff Kirsher * This is called only at module unload (or hotplug removal). 3083874aeea5SJeff Kirsher */ 3084874aeea5SJeff Kirsher static void efx_pci_remove_main(struct efx_nic *efx) 3085874aeea5SJeff Kirsher { 30867153f623SBen Hutchings /* Flush reset_work. It can no longer be scheduled since we 30877153f623SBen Hutchings * are not READY. 30887153f623SBen Hutchings */ 30897153f623SBen Hutchings BUG_ON(efx->state == STATE_READY); 30907153f623SBen Hutchings cancel_work_sync(&efx->reset_work); 30917153f623SBen Hutchings 3092d8291187SBen Hutchings efx_disable_interrupts(efx); 3093874aeea5SJeff Kirsher efx_nic_fini_interrupt(efx); 3094874aeea5SJeff Kirsher efx_fini_port(efx); 3095874aeea5SJeff Kirsher efx->type->fini(efx); 3096874aeea5SJeff Kirsher efx_fini_napi(efx); 3097874aeea5SJeff Kirsher efx_remove_all(efx); 3098874aeea5SJeff Kirsher } 3099874aeea5SJeff Kirsher 3100874aeea5SJeff Kirsher /* Final NIC shutdown 31012a3fc311SDaniel Pieczko * This is called only at module unload (or hotplug removal). A PF can call 31022a3fc311SDaniel Pieczko * this on its VFs to ensure they are unbound first. 3103874aeea5SJeff Kirsher */ 3104874aeea5SJeff Kirsher static void efx_pci_remove(struct pci_dev *pci_dev) 3105874aeea5SJeff Kirsher { 3106874aeea5SJeff Kirsher struct efx_nic *efx; 3107874aeea5SJeff Kirsher 3108874aeea5SJeff Kirsher efx = pci_get_drvdata(pci_dev); 3109874aeea5SJeff Kirsher if (!efx) 3110874aeea5SJeff Kirsher return; 3111874aeea5SJeff Kirsher 3112874aeea5SJeff Kirsher /* Mark the NIC as fini, then stop the interface */ 3113874aeea5SJeff Kirsher rtnl_lock(); 31140bcf4a64SBen Hutchings efx_dissociate(efx); 3115874aeea5SJeff Kirsher dev_close(efx->net_dev); 3116d8291187SBen Hutchings efx_disable_interrupts(efx); 3117ea6bb99eSEdward Cree efx->state = STATE_UNINIT; 3118874aeea5SJeff Kirsher rtnl_unlock(); 3119874aeea5SJeff Kirsher 31207fa8d547SShradha Shah if (efx->type->sriov_fini) 3121d98a4ffeSShradha Shah efx->type->sriov_fini(efx); 31227fa8d547SShradha Shah 3123874aeea5SJeff Kirsher efx_unregister_netdev(efx); 3124874aeea5SJeff Kirsher 3125874aeea5SJeff Kirsher efx_mtd_remove(efx); 3126874aeea5SJeff Kirsher 3127874aeea5SJeff Kirsher efx_pci_remove_main(efx); 3128874aeea5SJeff Kirsher 3129874aeea5SJeff Kirsher efx_fini_io(efx); 3130874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "shutdown successful\n"); 3131874aeea5SJeff Kirsher 3132874aeea5SJeff Kirsher efx_fini_struct(efx); 3133874aeea5SJeff Kirsher free_netdev(efx->net_dev); 3134626950dbSAlexandre Rames 3135626950dbSAlexandre Rames pci_disable_pcie_error_reporting(pci_dev); 3136874aeea5SJeff Kirsher }; 3137874aeea5SJeff Kirsher 3138460eeaa0SBen Hutchings /* NIC VPD information 3139460eeaa0SBen Hutchings * Called during probe to display the part number of the 3140460eeaa0SBen Hutchings * installed NIC. VPD is potentially very large but this should 3141460eeaa0SBen Hutchings * always appear within the first 512 bytes. 3142460eeaa0SBen Hutchings */ 3143460eeaa0SBen Hutchings #define SFC_VPD_LEN 512 3144ef215e64SBen Hutchings static void efx_probe_vpd_strings(struct efx_nic *efx) 3145460eeaa0SBen Hutchings { 3146460eeaa0SBen Hutchings struct pci_dev *dev = efx->pci_dev; 3147460eeaa0SBen Hutchings char vpd_data[SFC_VPD_LEN]; 3148460eeaa0SBen Hutchings ssize_t vpd_size; 3149ef215e64SBen Hutchings int ro_start, ro_size, i, j; 3150460eeaa0SBen Hutchings 3151460eeaa0SBen Hutchings /* Get the vpd data from the device */ 3152460eeaa0SBen Hutchings vpd_size = pci_read_vpd(dev, 0, sizeof(vpd_data), vpd_data); 3153460eeaa0SBen Hutchings if (vpd_size <= 0) { 3154460eeaa0SBen Hutchings netif_err(efx, drv, efx->net_dev, "Unable to read VPD\n"); 3155460eeaa0SBen Hutchings return; 3156460eeaa0SBen Hutchings } 3157460eeaa0SBen Hutchings 3158460eeaa0SBen Hutchings /* Get the Read only section */ 3159ef215e64SBen Hutchings ro_start = pci_vpd_find_tag(vpd_data, 0, vpd_size, PCI_VPD_LRDT_RO_DATA); 3160ef215e64SBen Hutchings if (ro_start < 0) { 3161460eeaa0SBen Hutchings netif_err(efx, drv, efx->net_dev, "VPD Read-only not found\n"); 3162460eeaa0SBen Hutchings return; 3163460eeaa0SBen Hutchings } 3164460eeaa0SBen Hutchings 3165ef215e64SBen Hutchings ro_size = pci_vpd_lrdt_size(&vpd_data[ro_start]); 3166ef215e64SBen Hutchings j = ro_size; 3167ef215e64SBen Hutchings i = ro_start + PCI_VPD_LRDT_TAG_SIZE; 3168460eeaa0SBen Hutchings if (i + j > vpd_size) 3169460eeaa0SBen Hutchings j = vpd_size - i; 3170460eeaa0SBen Hutchings 3171460eeaa0SBen Hutchings /* Get the Part number */ 3172460eeaa0SBen Hutchings i = pci_vpd_find_info_keyword(vpd_data, i, j, "PN"); 3173460eeaa0SBen Hutchings if (i < 0) { 3174460eeaa0SBen Hutchings netif_err(efx, drv, efx->net_dev, "Part number not found\n"); 3175460eeaa0SBen Hutchings return; 3176460eeaa0SBen Hutchings } 3177460eeaa0SBen Hutchings 3178460eeaa0SBen Hutchings j = pci_vpd_info_field_size(&vpd_data[i]); 3179460eeaa0SBen Hutchings i += PCI_VPD_INFO_FLD_HDR_SIZE; 3180460eeaa0SBen Hutchings if (i + j > vpd_size) { 3181460eeaa0SBen Hutchings netif_err(efx, drv, efx->net_dev, "Incomplete part number\n"); 3182460eeaa0SBen Hutchings return; 3183460eeaa0SBen Hutchings } 3184460eeaa0SBen Hutchings 3185460eeaa0SBen Hutchings netif_info(efx, drv, efx->net_dev, 3186460eeaa0SBen Hutchings "Part Number : %.*s\n", j, &vpd_data[i]); 3187ef215e64SBen Hutchings 3188ef215e64SBen Hutchings i = ro_start + PCI_VPD_LRDT_TAG_SIZE; 3189ef215e64SBen Hutchings j = ro_size; 3190ef215e64SBen Hutchings i = pci_vpd_find_info_keyword(vpd_data, i, j, "SN"); 3191ef215e64SBen Hutchings if (i < 0) { 3192ef215e64SBen Hutchings netif_err(efx, drv, efx->net_dev, "Serial number not found\n"); 3193ef215e64SBen Hutchings return; 3194ef215e64SBen Hutchings } 3195ef215e64SBen Hutchings 3196ef215e64SBen Hutchings j = pci_vpd_info_field_size(&vpd_data[i]); 3197ef215e64SBen Hutchings i += PCI_VPD_INFO_FLD_HDR_SIZE; 3198ef215e64SBen Hutchings if (i + j > vpd_size) { 3199ef215e64SBen Hutchings netif_err(efx, drv, efx->net_dev, "Incomplete serial number\n"); 3200ef215e64SBen Hutchings return; 3201ef215e64SBen Hutchings } 3202ef215e64SBen Hutchings 3203ef215e64SBen Hutchings efx->vpd_sn = kmalloc(j + 1, GFP_KERNEL); 3204ef215e64SBen Hutchings if (!efx->vpd_sn) 3205ef215e64SBen Hutchings return; 3206ef215e64SBen Hutchings 3207ef215e64SBen Hutchings snprintf(efx->vpd_sn, j + 1, "%s", &vpd_data[i]); 3208460eeaa0SBen Hutchings } 3209460eeaa0SBen Hutchings 3210460eeaa0SBen Hutchings 3211874aeea5SJeff Kirsher /* Main body of NIC initialisation 3212874aeea5SJeff Kirsher * This is called at module load (or hotplug insertion, theoretically). 3213874aeea5SJeff Kirsher */ 3214874aeea5SJeff Kirsher static int efx_pci_probe_main(struct efx_nic *efx) 3215874aeea5SJeff Kirsher { 3216874aeea5SJeff Kirsher int rc; 3217874aeea5SJeff Kirsher 3218874aeea5SJeff Kirsher /* Do start-of-day initialisation */ 3219874aeea5SJeff Kirsher rc = efx_probe_all(efx); 3220874aeea5SJeff Kirsher if (rc) 3221874aeea5SJeff Kirsher goto fail1; 3222874aeea5SJeff Kirsher 3223874aeea5SJeff Kirsher efx_init_napi(efx); 3224874aeea5SJeff Kirsher 3225874aeea5SJeff Kirsher rc = efx->type->init(efx); 3226874aeea5SJeff Kirsher if (rc) { 3227874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 3228874aeea5SJeff Kirsher "failed to initialise NIC\n"); 3229874aeea5SJeff Kirsher goto fail3; 3230874aeea5SJeff Kirsher } 3231874aeea5SJeff Kirsher 3232874aeea5SJeff Kirsher rc = efx_init_port(efx); 3233874aeea5SJeff Kirsher if (rc) { 3234874aeea5SJeff Kirsher netif_err(efx, probe, efx->net_dev, 3235874aeea5SJeff Kirsher "failed to initialise port\n"); 3236874aeea5SJeff Kirsher goto fail4; 3237874aeea5SJeff Kirsher } 3238874aeea5SJeff Kirsher 3239874aeea5SJeff Kirsher rc = efx_nic_init_interrupt(efx); 3240874aeea5SJeff Kirsher if (rc) 3241874aeea5SJeff Kirsher goto fail5; 3242261e4d96SJon Cooper rc = efx_enable_interrupts(efx); 3243261e4d96SJon Cooper if (rc) 3244261e4d96SJon Cooper goto fail6; 3245874aeea5SJeff Kirsher 3246874aeea5SJeff Kirsher return 0; 3247874aeea5SJeff Kirsher 3248261e4d96SJon Cooper fail6: 3249261e4d96SJon Cooper efx_nic_fini_interrupt(efx); 3250874aeea5SJeff Kirsher fail5: 3251874aeea5SJeff Kirsher efx_fini_port(efx); 3252874aeea5SJeff Kirsher fail4: 3253874aeea5SJeff Kirsher efx->type->fini(efx); 3254874aeea5SJeff Kirsher fail3: 3255874aeea5SJeff Kirsher efx_fini_napi(efx); 3256874aeea5SJeff Kirsher efx_remove_all(efx); 3257874aeea5SJeff Kirsher fail1: 3258874aeea5SJeff Kirsher return rc; 3259874aeea5SJeff Kirsher } 3260874aeea5SJeff Kirsher 32618a531400SJon Cooper static int efx_pci_probe_post_io(struct efx_nic *efx) 32628a531400SJon Cooper { 32638a531400SJon Cooper struct net_device *net_dev = efx->net_dev; 32648a531400SJon Cooper int rc = efx_pci_probe_main(efx); 32658a531400SJon Cooper 32668a531400SJon Cooper if (rc) 32678a531400SJon Cooper return rc; 32688a531400SJon Cooper 32698a531400SJon Cooper if (efx->type->sriov_init) { 32708a531400SJon Cooper rc = efx->type->sriov_init(efx); 32718a531400SJon Cooper if (rc) 32728a531400SJon Cooper netif_err(efx, probe, efx->net_dev, 32738a531400SJon Cooper "SR-IOV can't be enabled rc %d\n", rc); 32748a531400SJon Cooper } 32758a531400SJon Cooper 32768a531400SJon Cooper /* Determine netdevice features */ 32778a531400SJon Cooper net_dev->features |= (efx->type->offload_features | NETIF_F_SG | 32786978729fSEdward Cree NETIF_F_TSO | NETIF_F_RXCSUM | NETIF_F_RXALL); 32798a531400SJon Cooper if (efx->type->offload_features & (NETIF_F_IPV6_CSUM | NETIF_F_HW_CSUM)) 32808a531400SJon Cooper net_dev->features |= NETIF_F_TSO6; 32818a531400SJon Cooper /* Check whether device supports TSO */ 32828a531400SJon Cooper if (!efx->type->tso_versions || !efx->type->tso_versions(efx)) 32838a531400SJon Cooper net_dev->features &= ~NETIF_F_ALL_TSO; 32848a531400SJon Cooper /* Mask for features that also apply to VLAN devices */ 32858a531400SJon Cooper net_dev->vlan_features |= (NETIF_F_HW_CSUM | NETIF_F_SG | 32868a531400SJon Cooper NETIF_F_HIGHDMA | NETIF_F_ALL_TSO | 32878a531400SJon Cooper NETIF_F_RXCSUM); 32888a531400SJon Cooper 32896978729fSEdward Cree net_dev->hw_features |= net_dev->features & ~efx->fixed_features; 32906978729fSEdward Cree 32916978729fSEdward Cree /* Disable receiving frames with bad FCS, by default. */ 32926978729fSEdward Cree net_dev->features &= ~NETIF_F_RXALL; 32938a531400SJon Cooper 32948a531400SJon Cooper /* Disable VLAN filtering by default. It may be enforced if 32958a531400SJon Cooper * the feature is fixed (i.e. VLAN filters are required to 32968a531400SJon Cooper * receive VLAN tagged packets due to vPort restrictions). 32978a531400SJon Cooper */ 32988a531400SJon Cooper net_dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 32998a531400SJon Cooper net_dev->features |= efx->fixed_features; 33008a531400SJon Cooper 33018a531400SJon Cooper rc = efx_register_netdev(efx); 33028a531400SJon Cooper if (!rc) 33038a531400SJon Cooper return 0; 33048a531400SJon Cooper 33058a531400SJon Cooper efx_pci_remove_main(efx); 33068a531400SJon Cooper return rc; 33078a531400SJon Cooper } 33088a531400SJon Cooper 3309874aeea5SJeff Kirsher /* NIC initialisation 3310874aeea5SJeff Kirsher * 3311874aeea5SJeff Kirsher * This is called at module load (or hotplug insertion, 331273ba7b68SBen Hutchings * theoretically). It sets up PCI mappings, resets the NIC, 3313874aeea5SJeff Kirsher * sets up and registers the network devices with the kernel and hooks 3314874aeea5SJeff Kirsher * the interrupt service routine. It does not prepare the device for 3315874aeea5SJeff Kirsher * transmission; this is left to the first time one of the network 3316874aeea5SJeff Kirsher * interfaces is brought up (i.e. efx_net_open). 3317874aeea5SJeff Kirsher */ 331887d1fc11SBill Pemberton static int efx_pci_probe(struct pci_dev *pci_dev, 3319874aeea5SJeff Kirsher const struct pci_device_id *entry) 3320874aeea5SJeff Kirsher { 3321874aeea5SJeff Kirsher struct net_device *net_dev; 3322874aeea5SJeff Kirsher struct efx_nic *efx; 3323fadac6aaSBen Hutchings int rc; 3324874aeea5SJeff Kirsher 3325874aeea5SJeff Kirsher /* Allocate and initialise a struct net_device and struct efx_nic */ 3326874aeea5SJeff Kirsher net_dev = alloc_etherdev_mqs(sizeof(*efx), EFX_MAX_CORE_TX_QUEUES, 3327874aeea5SJeff Kirsher EFX_MAX_RX_QUEUES); 3328874aeea5SJeff Kirsher if (!net_dev) 3329874aeea5SJeff Kirsher return -ENOMEM; 3330adeb15aaSBen Hutchings efx = netdev_priv(net_dev); 3331adeb15aaSBen Hutchings efx->type = (const struct efx_nic_type *) entry->driver_data; 3332ebfcd0fdSAndrew Rybchenko efx->fixed_features |= NETIF_F_HIGHDMA; 3333eb7cfd8cSAndrew Rybchenko 3334874aeea5SJeff Kirsher pci_set_drvdata(pci_dev, efx); 3335874aeea5SJeff Kirsher SET_NETDEV_DEV(net_dev, &pci_dev->dev); 3336adeb15aaSBen Hutchings rc = efx_init_struct(efx, pci_dev, net_dev); 3337874aeea5SJeff Kirsher if (rc) 3338874aeea5SJeff Kirsher goto fail1; 3339874aeea5SJeff Kirsher 3340874aeea5SJeff Kirsher netif_info(efx, probe, efx->net_dev, 3341874aeea5SJeff Kirsher "Solarflare NIC detected\n"); 3342874aeea5SJeff Kirsher 33436f7f8aa6SShradha Shah if (!efx->type->is_vf) 3344ef215e64SBen Hutchings efx_probe_vpd_strings(efx); 3345460eeaa0SBen Hutchings 3346874aeea5SJeff Kirsher /* Set up basic I/O (BAR mappings etc) */ 3347874aeea5SJeff Kirsher rc = efx_init_io(efx); 3348874aeea5SJeff Kirsher if (rc) 3349874aeea5SJeff Kirsher goto fail2; 3350874aeea5SJeff Kirsher 33518a531400SJon Cooper rc = efx_pci_probe_post_io(efx); 33528a531400SJon Cooper if (rc) { 33538a531400SJon Cooper /* On failure, retry once immediately. 33548a531400SJon Cooper * If we aborted probe due to a scheduled reset, dismiss it. 33558a531400SJon Cooper */ 33568a531400SJon Cooper efx->reset_pending = 0; 33578a531400SJon Cooper rc = efx_pci_probe_post_io(efx); 33588a531400SJon Cooper if (rc) { 33598a531400SJon Cooper /* On another failure, retry once more 33608a531400SJon Cooper * after a 50-305ms delay. 33618a531400SJon Cooper */ 33628a531400SJon Cooper unsigned char r; 33638a531400SJon Cooper 33648a531400SJon Cooper get_random_bytes(&r, 1); 33658a531400SJon Cooper msleep((unsigned int)r + 50); 33668a531400SJon Cooper efx->reset_pending = 0; 33678a531400SJon Cooper rc = efx_pci_probe_post_io(efx); 33688a531400SJon Cooper } 33698a531400SJon Cooper } 3370fadac6aaSBen Hutchings if (rc) 3371874aeea5SJeff Kirsher goto fail3; 3372874aeea5SJeff Kirsher 3373874aeea5SJeff Kirsher netif_dbg(efx, probe, efx->net_dev, "initialisation successful\n"); 3374874aeea5SJeff Kirsher 33757c43161cSBen Hutchings /* Try to create MTDs, but allow this to fail */ 3376874aeea5SJeff Kirsher rtnl_lock(); 33777c43161cSBen Hutchings rc = efx_mtd_probe(efx); 3378874aeea5SJeff Kirsher rtnl_unlock(); 337909a04204SBert Kenward if (rc && rc != -EPERM) 33807c43161cSBen Hutchings netif_warn(efx, probe, efx->net_dev, 33817c43161cSBen Hutchings "failed to create MTDs (%d)\n", rc); 33827c43161cSBen Hutchings 3383626950dbSAlexandre Rames rc = pci_enable_pcie_error_reporting(pci_dev); 3384626950dbSAlexandre Rames if (rc && rc != -EINVAL) 338509a04204SBert Kenward netif_notice(efx, probe, efx->net_dev, 338609a04204SBert Kenward "PCIE error reporting unavailable (%d).\n", 338709a04204SBert Kenward rc); 3388626950dbSAlexandre Rames 3389e5fbd977SJon Cooper if (efx->type->udp_tnl_push_ports) 3390e5fbd977SJon Cooper efx->type->udp_tnl_push_ports(efx); 3391e5fbd977SJon Cooper 3392874aeea5SJeff Kirsher return 0; 3393874aeea5SJeff Kirsher 3394874aeea5SJeff Kirsher fail3: 3395874aeea5SJeff Kirsher efx_fini_io(efx); 3396874aeea5SJeff Kirsher fail2: 3397874aeea5SJeff Kirsher efx_fini_struct(efx); 3398874aeea5SJeff Kirsher fail1: 3399874aeea5SJeff Kirsher WARN_ON(rc > 0); 3400874aeea5SJeff Kirsher netif_dbg(efx, drv, efx->net_dev, "initialisation failed. rc=%d\n", rc); 3401874aeea5SJeff Kirsher free_netdev(net_dev); 3402874aeea5SJeff Kirsher return rc; 3403874aeea5SJeff Kirsher } 3404874aeea5SJeff Kirsher 3405834e23ddSShradha Shah /* efx_pci_sriov_configure returns the actual number of Virtual Functions 3406834e23ddSShradha Shah * enabled on success 3407834e23ddSShradha Shah */ 3408834e23ddSShradha Shah #ifdef CONFIG_SFC_SRIOV 3409834e23ddSShradha Shah static int efx_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 3410834e23ddSShradha Shah { 3411834e23ddSShradha Shah int rc; 3412834e23ddSShradha Shah struct efx_nic *efx = pci_get_drvdata(dev); 3413834e23ddSShradha Shah 3414834e23ddSShradha Shah if (efx->type->sriov_configure) { 3415834e23ddSShradha Shah rc = efx->type->sriov_configure(efx, num_vfs); 3416834e23ddSShradha Shah if (rc) 3417834e23ddSShradha Shah return rc; 3418834e23ddSShradha Shah else 3419834e23ddSShradha Shah return num_vfs; 3420834e23ddSShradha Shah } else 3421834e23ddSShradha Shah return -EOPNOTSUPP; 3422834e23ddSShradha Shah } 3423834e23ddSShradha Shah #endif 3424834e23ddSShradha Shah 3425874aeea5SJeff Kirsher static int efx_pm_freeze(struct device *dev) 3426874aeea5SJeff Kirsher { 3427874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 3428874aeea5SJeff Kirsher 342961da026dSBen Hutchings rtnl_lock(); 343061da026dSBen Hutchings 34316032fb56SBen Hutchings if (efx->state != STATE_DISABLED) { 3432f16aeea0SBen Hutchings efx->state = STATE_UNINIT; 3433874aeea5SJeff Kirsher 3434c2f3b8e3SDaniel Pieczko efx_device_detach_sync(efx); 3435874aeea5SJeff Kirsher 3436874aeea5SJeff Kirsher efx_stop_all(efx); 3437d8291187SBen Hutchings efx_disable_interrupts(efx); 34386032fb56SBen Hutchings } 3439874aeea5SJeff Kirsher 344061da026dSBen Hutchings rtnl_unlock(); 344161da026dSBen Hutchings 3442874aeea5SJeff Kirsher return 0; 3443874aeea5SJeff Kirsher } 3444874aeea5SJeff Kirsher 3445874aeea5SJeff Kirsher static int efx_pm_thaw(struct device *dev) 3446874aeea5SJeff Kirsher { 3447261e4d96SJon Cooper int rc; 3448874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); 3449874aeea5SJeff Kirsher 345061da026dSBen Hutchings rtnl_lock(); 345161da026dSBen Hutchings 34526032fb56SBen Hutchings if (efx->state != STATE_DISABLED) { 3453261e4d96SJon Cooper rc = efx_enable_interrupts(efx); 3454261e4d96SJon Cooper if (rc) 3455261e4d96SJon Cooper goto fail; 3456874aeea5SJeff Kirsher 3457874aeea5SJeff Kirsher mutex_lock(&efx->mac_lock); 3458874aeea5SJeff Kirsher efx->phy_op->reconfigure(efx); 3459874aeea5SJeff Kirsher mutex_unlock(&efx->mac_lock); 3460874aeea5SJeff Kirsher 3461874aeea5SJeff Kirsher efx_start_all(efx); 3462874aeea5SJeff Kirsher 34639c568fd8SPeter Dunning efx_device_attach_if_not_resetting(efx); 3464874aeea5SJeff Kirsher 3465f16aeea0SBen Hutchings efx->state = STATE_READY; 3466874aeea5SJeff Kirsher 3467874aeea5SJeff Kirsher efx->type->resume_wol(efx); 34686032fb56SBen Hutchings } 3469874aeea5SJeff Kirsher 347061da026dSBen Hutchings rtnl_unlock(); 347161da026dSBen Hutchings 3472874aeea5SJeff Kirsher /* Reschedule any quenched resets scheduled during efx_pm_freeze() */ 3473874aeea5SJeff Kirsher queue_work(reset_workqueue, &efx->reset_work); 3474874aeea5SJeff Kirsher 3475874aeea5SJeff Kirsher return 0; 3476261e4d96SJon Cooper 3477261e4d96SJon Cooper fail: 3478261e4d96SJon Cooper rtnl_unlock(); 3479261e4d96SJon Cooper 3480261e4d96SJon Cooper return rc; 3481874aeea5SJeff Kirsher } 3482874aeea5SJeff Kirsher 3483874aeea5SJeff Kirsher static int efx_pm_poweroff(struct device *dev) 3484874aeea5SJeff Kirsher { 3485874aeea5SJeff Kirsher struct pci_dev *pci_dev = to_pci_dev(dev); 3486874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(pci_dev); 3487874aeea5SJeff Kirsher 3488874aeea5SJeff Kirsher efx->type->fini(efx); 3489874aeea5SJeff Kirsher 3490874aeea5SJeff Kirsher efx->reset_pending = 0; 3491874aeea5SJeff Kirsher 3492874aeea5SJeff Kirsher pci_save_state(pci_dev); 3493874aeea5SJeff Kirsher return pci_set_power_state(pci_dev, PCI_D3hot); 3494874aeea5SJeff Kirsher } 3495874aeea5SJeff Kirsher 3496874aeea5SJeff Kirsher /* Used for both resume and restore */ 3497874aeea5SJeff Kirsher static int efx_pm_resume(struct device *dev) 3498874aeea5SJeff Kirsher { 3499874aeea5SJeff Kirsher struct pci_dev *pci_dev = to_pci_dev(dev); 3500874aeea5SJeff Kirsher struct efx_nic *efx = pci_get_drvdata(pci_dev); 3501874aeea5SJeff Kirsher int rc; 3502874aeea5SJeff Kirsher 3503874aeea5SJeff Kirsher rc = pci_set_power_state(pci_dev, PCI_D0); 3504874aeea5SJeff Kirsher if (rc) 3505874aeea5SJeff Kirsher return rc; 3506874aeea5SJeff Kirsher pci_restore_state(pci_dev); 3507874aeea5SJeff Kirsher rc = pci_enable_device(pci_dev); 3508874aeea5SJeff Kirsher if (rc) 3509874aeea5SJeff Kirsher return rc; 3510874aeea5SJeff Kirsher pci_set_master(efx->pci_dev); 3511874aeea5SJeff Kirsher rc = efx->type->reset(efx, RESET_TYPE_ALL); 3512874aeea5SJeff Kirsher if (rc) 3513874aeea5SJeff Kirsher return rc; 3514874aeea5SJeff Kirsher rc = efx->type->init(efx); 3515874aeea5SJeff Kirsher if (rc) 3516874aeea5SJeff Kirsher return rc; 3517261e4d96SJon Cooper rc = efx_pm_thaw(dev); 3518261e4d96SJon Cooper return rc; 3519874aeea5SJeff Kirsher } 3520874aeea5SJeff Kirsher 3521874aeea5SJeff Kirsher static int efx_pm_suspend(struct device *dev) 3522874aeea5SJeff Kirsher { 3523874aeea5SJeff Kirsher int rc; 3524874aeea5SJeff Kirsher 3525874aeea5SJeff Kirsher efx_pm_freeze(dev); 3526874aeea5SJeff Kirsher rc = efx_pm_poweroff(dev); 3527874aeea5SJeff Kirsher if (rc) 3528874aeea5SJeff Kirsher efx_pm_resume(dev); 3529874aeea5SJeff Kirsher return rc; 3530874aeea5SJeff Kirsher } 3531874aeea5SJeff Kirsher 353218e83e4cSBen Hutchings static const struct dev_pm_ops efx_pm_ops = { 3533874aeea5SJeff Kirsher .suspend = efx_pm_suspend, 3534874aeea5SJeff Kirsher .resume = efx_pm_resume, 3535874aeea5SJeff Kirsher .freeze = efx_pm_freeze, 3536874aeea5SJeff Kirsher .thaw = efx_pm_thaw, 3537874aeea5SJeff Kirsher .poweroff = efx_pm_poweroff, 3538874aeea5SJeff Kirsher .restore = efx_pm_resume, 3539874aeea5SJeff Kirsher }; 3540874aeea5SJeff Kirsher 3541626950dbSAlexandre Rames /* A PCI error affecting this device was detected. 3542626950dbSAlexandre Rames * At this point MMIO and DMA may be disabled. 3543626950dbSAlexandre Rames * Stop the software path and request a slot reset. 3544626950dbSAlexandre Rames */ 3545debd0034Sstephen hemminger static pci_ers_result_t efx_io_error_detected(struct pci_dev *pdev, 3546626950dbSAlexandre Rames enum pci_channel_state state) 3547626950dbSAlexandre Rames { 3548626950dbSAlexandre Rames pci_ers_result_t status = PCI_ERS_RESULT_RECOVERED; 3549626950dbSAlexandre Rames struct efx_nic *efx = pci_get_drvdata(pdev); 3550626950dbSAlexandre Rames 3551626950dbSAlexandre Rames if (state == pci_channel_io_perm_failure) 3552626950dbSAlexandre Rames return PCI_ERS_RESULT_DISCONNECT; 3553626950dbSAlexandre Rames 3554626950dbSAlexandre Rames rtnl_lock(); 3555626950dbSAlexandre Rames 3556626950dbSAlexandre Rames if (efx->state != STATE_DISABLED) { 3557626950dbSAlexandre Rames efx->state = STATE_RECOVERY; 3558626950dbSAlexandre Rames efx->reset_pending = 0; 3559626950dbSAlexandre Rames 3560626950dbSAlexandre Rames efx_device_detach_sync(efx); 3561626950dbSAlexandre Rames 3562626950dbSAlexandre Rames efx_stop_all(efx); 3563d8291187SBen Hutchings efx_disable_interrupts(efx); 3564626950dbSAlexandre Rames 3565626950dbSAlexandre Rames status = PCI_ERS_RESULT_NEED_RESET; 3566626950dbSAlexandre Rames } else { 3567626950dbSAlexandre Rames /* If the interface is disabled we don't want to do anything 3568626950dbSAlexandre Rames * with it. 3569626950dbSAlexandre Rames */ 3570626950dbSAlexandre Rames status = PCI_ERS_RESULT_RECOVERED; 3571626950dbSAlexandre Rames } 3572626950dbSAlexandre Rames 3573626950dbSAlexandre Rames rtnl_unlock(); 3574626950dbSAlexandre Rames 3575626950dbSAlexandre Rames pci_disable_device(pdev); 3576626950dbSAlexandre Rames 3577626950dbSAlexandre Rames return status; 3578626950dbSAlexandre Rames } 3579626950dbSAlexandre Rames 3580dbedd44eSJoe Perches /* Fake a successful reset, which will be performed later in efx_io_resume. */ 3581debd0034Sstephen hemminger static pci_ers_result_t efx_io_slot_reset(struct pci_dev *pdev) 3582626950dbSAlexandre Rames { 3583626950dbSAlexandre Rames struct efx_nic *efx = pci_get_drvdata(pdev); 3584626950dbSAlexandre Rames pci_ers_result_t status = PCI_ERS_RESULT_RECOVERED; 3585626950dbSAlexandre Rames int rc; 3586626950dbSAlexandre Rames 3587626950dbSAlexandre Rames if (pci_enable_device(pdev)) { 3588626950dbSAlexandre Rames netif_err(efx, hw, efx->net_dev, 3589626950dbSAlexandre Rames "Cannot re-enable PCI device after reset.\n"); 3590626950dbSAlexandre Rames status = PCI_ERS_RESULT_DISCONNECT; 3591626950dbSAlexandre Rames } 3592626950dbSAlexandre Rames 3593626950dbSAlexandre Rames rc = pci_cleanup_aer_uncorrect_error_status(pdev); 3594626950dbSAlexandre Rames if (rc) { 3595626950dbSAlexandre Rames netif_err(efx, hw, efx->net_dev, 3596626950dbSAlexandre Rames "pci_cleanup_aer_uncorrect_error_status failed (%d)\n", rc); 3597626950dbSAlexandre Rames /* Non-fatal error. Continue. */ 3598626950dbSAlexandre Rames } 3599626950dbSAlexandre Rames 3600626950dbSAlexandre Rames return status; 3601626950dbSAlexandre Rames } 3602626950dbSAlexandre Rames 3603626950dbSAlexandre Rames /* Perform the actual reset and resume I/O operations. */ 3604626950dbSAlexandre Rames static void efx_io_resume(struct pci_dev *pdev) 3605626950dbSAlexandre Rames { 3606626950dbSAlexandre Rames struct efx_nic *efx = pci_get_drvdata(pdev); 3607626950dbSAlexandre Rames int rc; 3608626950dbSAlexandre Rames 3609626950dbSAlexandre Rames rtnl_lock(); 3610626950dbSAlexandre Rames 3611626950dbSAlexandre Rames if (efx->state == STATE_DISABLED) 3612626950dbSAlexandre Rames goto out; 3613626950dbSAlexandre Rames 3614626950dbSAlexandre Rames rc = efx_reset(efx, RESET_TYPE_ALL); 3615626950dbSAlexandre Rames if (rc) { 3616626950dbSAlexandre Rames netif_err(efx, hw, efx->net_dev, 3617626950dbSAlexandre Rames "efx_reset failed after PCI error (%d)\n", rc); 3618626950dbSAlexandre Rames } else { 3619626950dbSAlexandre Rames efx->state = STATE_READY; 3620626950dbSAlexandre Rames netif_dbg(efx, hw, efx->net_dev, 3621626950dbSAlexandre Rames "Done resetting and resuming IO after PCI error.\n"); 3622626950dbSAlexandre Rames } 3623626950dbSAlexandre Rames 3624626950dbSAlexandre Rames out: 3625626950dbSAlexandre Rames rtnl_unlock(); 3626626950dbSAlexandre Rames } 3627626950dbSAlexandre Rames 3628626950dbSAlexandre Rames /* For simplicity and reliability, we always require a slot reset and try to 3629626950dbSAlexandre Rames * reset the hardware when a pci error affecting the device is detected. 3630626950dbSAlexandre Rames * We leave both the link_reset and mmio_enabled callback unimplemented: 3631626950dbSAlexandre Rames * with our request for slot reset the mmio_enabled callback will never be 3632626950dbSAlexandre Rames * called, and the link_reset callback is not used by AER or EEH mechanisms. 3633626950dbSAlexandre Rames */ 3634c300366bSJulia Lawall static const struct pci_error_handlers efx_err_handlers = { 3635626950dbSAlexandre Rames .error_detected = efx_io_error_detected, 3636626950dbSAlexandre Rames .slot_reset = efx_io_slot_reset, 3637626950dbSAlexandre Rames .resume = efx_io_resume, 3638626950dbSAlexandre Rames }; 3639626950dbSAlexandre Rames 3640874aeea5SJeff Kirsher static struct pci_driver efx_pci_driver = { 3641874aeea5SJeff Kirsher .name = KBUILD_MODNAME, 3642874aeea5SJeff Kirsher .id_table = efx_pci_table, 3643874aeea5SJeff Kirsher .probe = efx_pci_probe, 3644874aeea5SJeff Kirsher .remove = efx_pci_remove, 3645874aeea5SJeff Kirsher .driver.pm = &efx_pm_ops, 3646626950dbSAlexandre Rames .err_handler = &efx_err_handlers, 3647834e23ddSShradha Shah #ifdef CONFIG_SFC_SRIOV 3648834e23ddSShradha Shah .sriov_configure = efx_pci_sriov_configure, 3649834e23ddSShradha Shah #endif 3650874aeea5SJeff Kirsher }; 3651874aeea5SJeff Kirsher 3652874aeea5SJeff Kirsher /************************************************************************** 3653874aeea5SJeff Kirsher * 3654874aeea5SJeff Kirsher * Kernel module interface 3655874aeea5SJeff Kirsher * 3656874aeea5SJeff Kirsher *************************************************************************/ 3657874aeea5SJeff Kirsher 3658874aeea5SJeff Kirsher module_param(interrupt_mode, uint, 0444); 3659874aeea5SJeff Kirsher MODULE_PARM_DESC(interrupt_mode, 3660874aeea5SJeff Kirsher "Interrupt mode (0=>MSIX 1=>MSI 2=>legacy)"); 3661874aeea5SJeff Kirsher 3662874aeea5SJeff Kirsher static int __init efx_init_module(void) 3663874aeea5SJeff Kirsher { 3664874aeea5SJeff Kirsher int rc; 3665874aeea5SJeff Kirsher 3666874aeea5SJeff Kirsher printk(KERN_INFO "Solarflare NET driver v" EFX_DRIVER_VERSION "\n"); 3667874aeea5SJeff Kirsher 3668874aeea5SJeff Kirsher rc = register_netdevice_notifier(&efx_netdev_notifier); 3669874aeea5SJeff Kirsher if (rc) 3670874aeea5SJeff Kirsher goto err_notifier; 3671874aeea5SJeff Kirsher 36727fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 3673cd2d5b52SBen Hutchings rc = efx_init_sriov(); 3674cd2d5b52SBen Hutchings if (rc) 3675cd2d5b52SBen Hutchings goto err_sriov; 36767fa8d547SShradha Shah #endif 3677cd2d5b52SBen Hutchings 3678874aeea5SJeff Kirsher reset_workqueue = create_singlethread_workqueue("sfc_reset"); 3679874aeea5SJeff Kirsher if (!reset_workqueue) { 3680874aeea5SJeff Kirsher rc = -ENOMEM; 3681874aeea5SJeff Kirsher goto err_reset; 3682874aeea5SJeff Kirsher } 3683874aeea5SJeff Kirsher 3684874aeea5SJeff Kirsher rc = pci_register_driver(&efx_pci_driver); 3685874aeea5SJeff Kirsher if (rc < 0) 3686874aeea5SJeff Kirsher goto err_pci; 3687874aeea5SJeff Kirsher 3688874aeea5SJeff Kirsher return 0; 3689874aeea5SJeff Kirsher 3690874aeea5SJeff Kirsher err_pci: 3691874aeea5SJeff Kirsher destroy_workqueue(reset_workqueue); 3692874aeea5SJeff Kirsher err_reset: 36937fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 3694cd2d5b52SBen Hutchings efx_fini_sriov(); 3695cd2d5b52SBen Hutchings err_sriov: 36967fa8d547SShradha Shah #endif 3697874aeea5SJeff Kirsher unregister_netdevice_notifier(&efx_netdev_notifier); 3698874aeea5SJeff Kirsher err_notifier: 3699874aeea5SJeff Kirsher return rc; 3700874aeea5SJeff Kirsher } 3701874aeea5SJeff Kirsher 3702874aeea5SJeff Kirsher static void __exit efx_exit_module(void) 3703874aeea5SJeff Kirsher { 3704874aeea5SJeff Kirsher printk(KERN_INFO "Solarflare NET driver unloading\n"); 3705874aeea5SJeff Kirsher 3706874aeea5SJeff Kirsher pci_unregister_driver(&efx_pci_driver); 3707874aeea5SJeff Kirsher destroy_workqueue(reset_workqueue); 37087fa8d547SShradha Shah #ifdef CONFIG_SFC_SRIOV 3709cd2d5b52SBen Hutchings efx_fini_sriov(); 37107fa8d547SShradha Shah #endif 3711874aeea5SJeff Kirsher unregister_netdevice_notifier(&efx_netdev_notifier); 3712874aeea5SJeff Kirsher 3713874aeea5SJeff Kirsher } 3714874aeea5SJeff Kirsher 3715874aeea5SJeff Kirsher module_init(efx_init_module); 3716874aeea5SJeff Kirsher module_exit(efx_exit_module); 3717874aeea5SJeff Kirsher 3718874aeea5SJeff Kirsher MODULE_AUTHOR("Solarflare Communications and " 3719874aeea5SJeff Kirsher "Michael Brown <mbrown@fensystems.co.uk>"); 37206a350fdbSBen Hutchings MODULE_DESCRIPTION("Solarflare network driver"); 3721874aeea5SJeff Kirsher MODULE_LICENSE("GPL"); 3722874aeea5SJeff Kirsher MODULE_DEVICE_TABLE(pci, efx_pci_table); 372314077e9eSEdward Cree MODULE_VERSION(EFX_DRIVER_VERSION); 3724