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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) 2005 - 2016 Broadcom4 * All rights reserved.5 *6 * Contact Information:7 * linux-drivers@emulex.com8 *9 * Emulex10 * 3333 Susan Street11 * Costa Mesa, CA 9262612 */13 14#include <linux/prefetch.h>15#include <linux/module.h>16#include "be.h"17#include "be_cmds.h"18#include <asm/div64.h>19#include <linux/if_bridge.h>20#include <net/busy_poll.h>21#include <net/vxlan.h>22 23MODULE_DESCRIPTION(DRV_DESC);24MODULE_AUTHOR("Emulex Corporation");25MODULE_LICENSE("GPL");26 27/* num_vfs module param is obsolete.28 * Use sysfs method to enable/disable VFs.29 */30static unsigned int num_vfs;31module_param(num_vfs, uint, 0444);32MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");33 34static ushort rx_frag_size = 2048;35module_param(rx_frag_size, ushort, 0444);36MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");37 38/* Per-module error detection/recovery workq shared across all functions.39 * Each function schedules its own work request on this shared workq.40 */41static struct workqueue_struct *be_err_recovery_workq;42 43static const struct pci_device_id be_dev_ids[] = {44#ifdef CONFIG_BE2NET_BE245 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },46 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },47#endif /* CONFIG_BE2NET_BE2 */48#ifdef CONFIG_BE2NET_BE349 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },50 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },51#endif /* CONFIG_BE2NET_BE3 */52#ifdef CONFIG_BE2NET_LANCER53 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},54 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)},55#endif /* CONFIG_BE2NET_LANCER */56#ifdef CONFIG_BE2NET_SKYHAWK57 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)},58 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)},59#endif /* CONFIG_BE2NET_SKYHAWK */60 { 0 }61};62MODULE_DEVICE_TABLE(pci, be_dev_ids);63 64/* Workqueue used by all functions for defering cmd calls to the adapter */65static struct workqueue_struct *be_wq;66 67/* UE Status Low CSR */68static const char * const ue_status_low_desc[] = {69 "CEV",70 "CTX",71 "DBUF",72 "ERX",73 "Host",74 "MPU",75 "NDMA",76 "PTC ",77 "RDMA ",78 "RXF ",79 "RXIPS ",80 "RXULP0 ",81 "RXULP1 ",82 "RXULP2 ",83 "TIM ",84 "TPOST ",85 "TPRE ",86 "TXIPS ",87 "TXULP0 ",88 "TXULP1 ",89 "UC ",90 "WDMA ",91 "TXULP2 ",92 "HOST1 ",93 "P0_OB_LINK ",94 "P1_OB_LINK ",95 "HOST_GPIO ",96 "MBOX ",97 "ERX2 ",98 "SPARE ",99 "JTAG ",100 "MPU_INTPEND "101};102 103/* UE Status High CSR */104static const char * const ue_status_hi_desc[] = {105 "LPCMEMHOST",106 "MGMT_MAC",107 "PCS0ONLINE",108 "MPU_IRAM",109 "PCS1ONLINE",110 "PCTL0",111 "PCTL1",112 "PMEM",113 "RR",114 "TXPB",115 "RXPP",116 "XAUI",117 "TXP",118 "ARM",119 "IPC",120 "HOST2",121 "HOST3",122 "HOST4",123 "HOST5",124 "HOST6",125 "HOST7",126 "ECRC",127 "Poison TLP",128 "NETC",129 "PERIPH",130 "LLTXULP",131 "D2P",132 "RCON",133 "LDMA",134 "LLTXP",135 "LLTXPB",136 "Unknown"137};138 139#define BE_VF_IF_EN_FLAGS (BE_IF_FLAGS_UNTAGGED | \140 BE_IF_FLAGS_BROADCAST | \141 BE_IF_FLAGS_MULTICAST | \142 BE_IF_FLAGS_PASS_L3L4_ERRORS)143 144static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)145{146 struct be_dma_mem *mem = &q->dma_mem;147 148 if (mem->va) {149 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,150 mem->dma);151 mem->va = NULL;152 }153}154 155static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,156 u16 len, u16 entry_size)157{158 struct be_dma_mem *mem = &q->dma_mem;159 160 memset(q, 0, sizeof(*q));161 q->len = len;162 q->entry_size = entry_size;163 mem->size = len * entry_size;164 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,165 &mem->dma, GFP_KERNEL);166 if (!mem->va)167 return -ENOMEM;168 return 0;169}170 171static void be_reg_intr_set(struct be_adapter *adapter, bool enable)172{173 u32 reg, enabled;174 175 pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET,176 ®);177 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;178 179 if (!enabled && enable)180 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;181 else if (enabled && !enable)182 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;183 else184 return;185 186 pci_write_config_dword(adapter->pdev,187 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg);188}189 190static void be_intr_set(struct be_adapter *adapter, bool enable)191{192 int status = 0;193 194 /* On lancer interrupts can't be controlled via this register */195 if (lancer_chip(adapter))196 return;197 198 if (be_check_error(adapter, BE_ERROR_EEH))199 return;200 201 status = be_cmd_intr_set(adapter, enable);202 if (status)203 be_reg_intr_set(adapter, enable);204}205 206static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)207{208 u32 val = 0;209 210 if (be_check_error(adapter, BE_ERROR_HW))211 return;212 213 val |= qid & DB_RQ_RING_ID_MASK;214 val |= posted << DB_RQ_NUM_POSTED_SHIFT;215 216 wmb();217 iowrite32(val, adapter->db + DB_RQ_OFFSET);218}219 220static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo,221 u16 posted)222{223 u32 val = 0;224 225 if (be_check_error(adapter, BE_ERROR_HW))226 return;227 228 val |= txo->q.id & DB_TXULP_RING_ID_MASK;229 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;230 231 wmb();232 iowrite32(val, adapter->db + txo->db_offset);233}234 235static void be_eq_notify(struct be_adapter *adapter, u16 qid,236 bool arm, bool clear_int, u16 num_popped,237 u32 eq_delay_mult_enc)238{239 u32 val = 0;240 241 val |= qid & DB_EQ_RING_ID_MASK;242 val |= ((qid & DB_EQ_RING_ID_EXT_MASK) << DB_EQ_RING_ID_EXT_MASK_SHIFT);243 244 if (be_check_error(adapter, BE_ERROR_HW))245 return;246 247 if (arm)248 val |= 1 << DB_EQ_REARM_SHIFT;249 if (clear_int)250 val |= 1 << DB_EQ_CLR_SHIFT;251 val |= 1 << DB_EQ_EVNT_SHIFT;252 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;253 val |= eq_delay_mult_enc << DB_EQ_R2I_DLY_SHIFT;254 iowrite32(val, adapter->db + DB_EQ_OFFSET);255}256 257void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)258{259 u32 val = 0;260 261 val |= qid & DB_CQ_RING_ID_MASK;262 val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<263 DB_CQ_RING_ID_EXT_MASK_SHIFT);264 265 if (be_check_error(adapter, BE_ERROR_HW))266 return;267 268 if (arm)269 val |= 1 << DB_CQ_REARM_SHIFT;270 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;271 iowrite32(val, adapter->db + DB_CQ_OFFSET);272}273 274static int be_dev_mac_add(struct be_adapter *adapter, const u8 *mac)275{276 int i;277 278 /* Check if mac has already been added as part of uc-list */279 for (i = 0; i < adapter->uc_macs; i++) {280 if (ether_addr_equal(adapter->uc_list[i].mac, mac)) {281 /* mac already added, skip addition */282 adapter->pmac_id[0] = adapter->pmac_id[i + 1];283 return 0;284 }285 }286 287 return be_cmd_pmac_add(adapter, mac, adapter->if_handle,288 &adapter->pmac_id[0], 0);289}290 291static void be_dev_mac_del(struct be_adapter *adapter, int pmac_id)292{293 int i;294 295 /* Skip deletion if the programmed mac is296 * being used in uc-list297 */298 for (i = 0; i < adapter->uc_macs; i++) {299 if (adapter->pmac_id[i + 1] == pmac_id)300 return;301 }302 be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);303}304 305static int be_mac_addr_set(struct net_device *netdev, void *p)306{307 struct be_adapter *adapter = netdev_priv(netdev);308 struct device *dev = &adapter->pdev->dev;309 struct sockaddr *addr = p;310 int status;311 u8 mac[ETH_ALEN];312 u32 old_pmac_id = adapter->pmac_id[0];313 314 if (!is_valid_ether_addr(addr->sa_data))315 return -EADDRNOTAVAIL;316 317 /* Proceed further only if, User provided MAC is different318 * from active MAC319 */320 if (ether_addr_equal(addr->sa_data, adapter->dev_mac))321 return 0;322 323 /* BE3 VFs without FILTMGMT privilege are not allowed to set its MAC324 * address325 */326 if (BEx_chip(adapter) && be_virtfn(adapter) &&327 !check_privilege(adapter, BE_PRIV_FILTMGMT))328 return -EPERM;329 330 /* if device is not running, copy MAC to netdev->dev_addr */331 if (!netif_running(netdev))332 goto done;333 334 /* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT335 * privilege or if PF did not provision the new MAC address.336 * On BE3, this cmd will always fail if the VF doesn't have the337 * FILTMGMT privilege. This failure is OK, only if the PF programmed338 * the MAC for the VF.339 */340 mutex_lock(&adapter->rx_filter_lock);341 status = be_dev_mac_add(adapter, (u8 *)addr->sa_data);342 if (!status) {343 344 /* Delete the old programmed MAC. This call may fail if the345 * old MAC was already deleted by the PF driver.346 */347 if (adapter->pmac_id[0] != old_pmac_id)348 be_dev_mac_del(adapter, old_pmac_id);349 }350 351 mutex_unlock(&adapter->rx_filter_lock);352 /* Decide if the new MAC is successfully activated only after353 * querying the FW354 */355 status = be_cmd_get_active_mac(adapter, adapter->pmac_id[0], mac,356 adapter->if_handle, true, 0);357 if (status)358 goto err;359 360 /* The MAC change did not happen, either due to lack of privilege361 * or PF didn't pre-provision.362 */363 if (!ether_addr_equal(addr->sa_data, mac)) {364 status = -EPERM;365 goto err;366 }367 368 /* Remember currently programmed MAC */369 ether_addr_copy(adapter->dev_mac, addr->sa_data);370done:371 eth_hw_addr_set(netdev, addr->sa_data);372 dev_info(dev, "MAC address changed to %pM\n", addr->sa_data);373 return 0;374err:375 dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);376 return status;377}378 379/* BE2 supports only v0 cmd */380static void *hw_stats_from_cmd(struct be_adapter *adapter)381{382 if (BE2_chip(adapter)) {383 struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va;384 385 return &cmd->hw_stats;386 } else if (BE3_chip(adapter)) {387 struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va;388 389 return &cmd->hw_stats;390 } else {391 struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va;392 393 return &cmd->hw_stats;394 }395}396 397/* BE2 supports only v0 cmd */398static void *be_erx_stats_from_cmd(struct be_adapter *adapter)399{400 if (BE2_chip(adapter)) {401 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);402 403 return &hw_stats->erx;404 } else if (BE3_chip(adapter)) {405 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);406 407 return &hw_stats->erx;408 } else {409 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);410 411 return &hw_stats->erx;412 }413}414 415static void populate_be_v0_stats(struct be_adapter *adapter)416{417 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);418 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;419 struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf;420 struct be_port_rxf_stats_v0 *port_stats =421 &rxf_stats->port[adapter->port_num];422 struct be_drv_stats *drvs = &adapter->drv_stats;423 424 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));425 drvs->rx_pause_frames = port_stats->rx_pause_frames;426 drvs->rx_crc_errors = port_stats->rx_crc_errors;427 drvs->rx_control_frames = port_stats->rx_control_frames;428 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;429 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;430 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;431 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;432 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;433 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;434 drvs->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow;435 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;436 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;437 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;438 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;439 drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow;440 drvs->rx_dropped_header_too_small =441 port_stats->rx_dropped_header_too_small;442 drvs->rx_address_filtered =443 port_stats->rx_address_filtered +444 port_stats->rx_vlan_filtered;445 drvs->rx_alignment_symbol_errors =446 port_stats->rx_alignment_symbol_errors;447 448 drvs->tx_pauseframes = port_stats->tx_pauseframes;449 drvs->tx_controlframes = port_stats->tx_controlframes;450 451 if (adapter->port_num)452 drvs->jabber_events = rxf_stats->port1_jabber_events;453 else454 drvs->jabber_events = rxf_stats->port0_jabber_events;455 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;456 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;457 drvs->forwarded_packets = rxf_stats->forwarded_packets;458 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;459 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;460 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;461 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;462}463 464static void populate_be_v1_stats(struct be_adapter *adapter)465{466 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);467 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;468 struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf;469 struct be_port_rxf_stats_v1 *port_stats =470 &rxf_stats->port[adapter->port_num];471 struct be_drv_stats *drvs = &adapter->drv_stats;472 473 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));474 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;475 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;476 drvs->rx_pause_frames = port_stats->rx_pause_frames;477 drvs->rx_crc_errors = port_stats->rx_crc_errors;478 drvs->rx_control_frames = port_stats->rx_control_frames;479 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;480 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;481 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;482 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;483 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;484 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;485 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;486 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;487 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;488 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;489 drvs->rx_dropped_header_too_small =490 port_stats->rx_dropped_header_too_small;491 drvs->rx_input_fifo_overflow_drop =492 port_stats->rx_input_fifo_overflow_drop;493 drvs->rx_address_filtered = port_stats->rx_address_filtered;494 drvs->rx_alignment_symbol_errors =495 port_stats->rx_alignment_symbol_errors;496 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;497 drvs->tx_pauseframes = port_stats->tx_pauseframes;498 drvs->tx_controlframes = port_stats->tx_controlframes;499 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;500 drvs->jabber_events = port_stats->jabber_events;501 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;502 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;503 drvs->forwarded_packets = rxf_stats->forwarded_packets;504 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;505 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;506 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;507 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;508}509 510static void populate_be_v2_stats(struct be_adapter *adapter)511{512 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);513 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;514 struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf;515 struct be_port_rxf_stats_v2 *port_stats =516 &rxf_stats->port[adapter->port_num];517 struct be_drv_stats *drvs = &adapter->drv_stats;518 519 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));520 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;521 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;522 drvs->rx_pause_frames = port_stats->rx_pause_frames;523 drvs->rx_crc_errors = port_stats->rx_crc_errors;524 drvs->rx_control_frames = port_stats->rx_control_frames;525 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;526 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;527 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;528 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;529 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;530 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;531 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;532 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;533 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;534 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;535 drvs->rx_dropped_header_too_small =536 port_stats->rx_dropped_header_too_small;537 drvs->rx_input_fifo_overflow_drop =538 port_stats->rx_input_fifo_overflow_drop;539 drvs->rx_address_filtered = port_stats->rx_address_filtered;540 drvs->rx_alignment_symbol_errors =541 port_stats->rx_alignment_symbol_errors;542 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;543 drvs->tx_pauseframes = port_stats->tx_pauseframes;544 drvs->tx_controlframes = port_stats->tx_controlframes;545 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;546 drvs->jabber_events = port_stats->jabber_events;547 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;548 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;549 drvs->forwarded_packets = rxf_stats->forwarded_packets;550 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;551 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;552 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;553 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;554 if (be_roce_supported(adapter)) {555 drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd;556 drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd;557 drvs->rx_roce_frames = port_stats->roce_frames_received;558 drvs->roce_drops_crc = port_stats->roce_drops_crc;559 drvs->roce_drops_payload_len =560 port_stats->roce_drops_payload_len;561 }562}563 564static void populate_lancer_stats(struct be_adapter *adapter)565{566 struct be_drv_stats *drvs = &adapter->drv_stats;567 struct lancer_pport_stats *pport_stats = pport_stats_from_cmd(adapter);568 569 be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats));570 drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo;571 drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo;572 drvs->rx_control_frames = pport_stats->rx_control_frames_lo;573 drvs->rx_in_range_errors = pport_stats->rx_in_range_errors;574 drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo;575 drvs->rx_dropped_runt = pport_stats->rx_dropped_runt;576 drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors;577 drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors;578 drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors;579 drvs->rx_dropped_tcp_length =580 pport_stats->rx_dropped_invalid_tcp_length;581 drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small;582 drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short;583 drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors;584 drvs->rx_dropped_header_too_small =585 pport_stats->rx_dropped_header_too_small;586 drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow;587 drvs->rx_address_filtered =588 pport_stats->rx_address_filtered +589 pport_stats->rx_vlan_filtered;590 drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo;591 drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow;592 drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo;593 drvs->tx_controlframes = pport_stats->tx_control_frames_lo;594 drvs->jabber_events = pport_stats->rx_jabbers;595 drvs->forwarded_packets = pport_stats->num_forwards_lo;596 drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo;597 drvs->rx_drops_too_many_frags =598 pport_stats->rx_drops_too_many_frags_lo;599}600 601static void accumulate_16bit_val(u32 *acc, u16 val)602{603#define lo(x) (x & 0xFFFF)604#define hi(x) (x & 0xFFFF0000)605 bool wrapped = val < lo(*acc);606 u32 newacc = hi(*acc) + val;607 608 if (wrapped)609 newacc += 65536;610 WRITE_ONCE(*acc, newacc);611}612 613static void populate_erx_stats(struct be_adapter *adapter,614 struct be_rx_obj *rxo, u32 erx_stat)615{616 if (!BEx_chip(adapter))617 rx_stats(rxo)->rx_drops_no_frags = erx_stat;618 else619 /* below erx HW counter can actually wrap around after620 * 65535. Driver accumulates a 32-bit value621 */622 accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,623 (u16)erx_stat);624}625 626void be_parse_stats(struct be_adapter *adapter)627{628 struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter);629 struct be_rx_obj *rxo;630 int i;631 u32 erx_stat;632 633 if (lancer_chip(adapter)) {634 populate_lancer_stats(adapter);635 } else {636 if (BE2_chip(adapter))637 populate_be_v0_stats(adapter);638 else if (BE3_chip(adapter))639 /* for BE3 */640 populate_be_v1_stats(adapter);641 else642 populate_be_v2_stats(adapter);643 644 /* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */645 for_all_rx_queues(adapter, rxo, i) {646 erx_stat = erx->rx_drops_no_fragments[rxo->q.id];647 populate_erx_stats(adapter, rxo, erx_stat);648 }649 }650}651 652static void be_get_stats64(struct net_device *netdev,653 struct rtnl_link_stats64 *stats)654{655 struct be_adapter *adapter = netdev_priv(netdev);656 struct be_drv_stats *drvs = &adapter->drv_stats;657 struct be_rx_obj *rxo;658 struct be_tx_obj *txo;659 u64 pkts, bytes;660 unsigned int start;661 int i;662 663 for_all_rx_queues(adapter, rxo, i) {664 const struct be_rx_stats *rx_stats = rx_stats(rxo);665 666 do {667 start = u64_stats_fetch_begin(&rx_stats->sync);668 pkts = rx_stats(rxo)->rx_pkts;669 bytes = rx_stats(rxo)->rx_bytes;670 } while (u64_stats_fetch_retry(&rx_stats->sync, start));671 stats->rx_packets += pkts;672 stats->rx_bytes += bytes;673 stats->multicast += rx_stats(rxo)->rx_mcast_pkts;674 stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs +675 rx_stats(rxo)->rx_drops_no_frags;676 }677 678 for_all_tx_queues(adapter, txo, i) {679 const struct be_tx_stats *tx_stats = tx_stats(txo);680 681 do {682 start = u64_stats_fetch_begin(&tx_stats->sync);683 pkts = tx_stats(txo)->tx_pkts;684 bytes = tx_stats(txo)->tx_bytes;685 } while (u64_stats_fetch_retry(&tx_stats->sync, start));686 stats->tx_packets += pkts;687 stats->tx_bytes += bytes;688 }689 690 /* bad pkts received */691 stats->rx_errors = drvs->rx_crc_errors +692 drvs->rx_alignment_symbol_errors +693 drvs->rx_in_range_errors +694 drvs->rx_out_range_errors +695 drvs->rx_frame_too_long +696 drvs->rx_dropped_too_small +697 drvs->rx_dropped_too_short +698 drvs->rx_dropped_header_too_small +699 drvs->rx_dropped_tcp_length +700 drvs->rx_dropped_runt;701 702 /* detailed rx errors */703 stats->rx_length_errors = drvs->rx_in_range_errors +704 drvs->rx_out_range_errors +705 drvs->rx_frame_too_long;706 707 stats->rx_crc_errors = drvs->rx_crc_errors;708 709 /* frame alignment errors */710 stats->rx_frame_errors = drvs->rx_alignment_symbol_errors;711 712 /* receiver fifo overrun */713 /* drops_no_pbuf is no per i/f, it's per BE card */714 stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop +715 drvs->rx_input_fifo_overflow_drop +716 drvs->rx_drops_no_pbuf;717}718 719void be_link_status_update(struct be_adapter *adapter, u8 link_status)720{721 struct net_device *netdev = adapter->netdev;722 723 if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) {724 netif_carrier_off(netdev);725 adapter->flags |= BE_FLAGS_LINK_STATUS_INIT;726 }727 728 if (link_status)729 netif_carrier_on(netdev);730 else731 netif_carrier_off(netdev);732 733 netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down");734}735 736static int be_gso_hdr_len(struct sk_buff *skb)737{738 if (skb->encapsulation)739 return skb_inner_tcp_all_headers(skb);740 741 return skb_tcp_all_headers(skb);742}743 744static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)745{746 struct be_tx_stats *stats = tx_stats(txo);747 u32 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;748 /* Account for headers which get duplicated in TSO pkt */749 u32 dup_hdr_len = tx_pkts > 1 ? be_gso_hdr_len(skb) * (tx_pkts - 1) : 0;750 751 u64_stats_update_begin(&stats->sync);752 stats->tx_reqs++;753 stats->tx_bytes += skb->len + dup_hdr_len;754 stats->tx_pkts += tx_pkts;755 if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)756 stats->tx_vxlan_offload_pkts += tx_pkts;757 u64_stats_update_end(&stats->sync);758}759 760/* Returns number of WRBs needed for the skb */761static u32 skb_wrb_cnt(struct sk_buff *skb)762{763 /* +1 for the header wrb */764 return 1 + (skb_headlen(skb) ? 1 : 0) + skb_shinfo(skb)->nr_frags;765}766 767static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)768{769 wrb->frag_pa_hi = cpu_to_le32(upper_32_bits(addr));770 wrb->frag_pa_lo = cpu_to_le32(lower_32_bits(addr));771 wrb->frag_len = cpu_to_le32(len & ETH_WRB_FRAG_LEN_MASK);772 wrb->rsvd0 = 0;773}774 775/* A dummy wrb is just all zeros. Using a separate routine for dummy-wrb776 * to avoid the swap and shift/mask operations in wrb_fill().777 */778static inline void wrb_fill_dummy(struct be_eth_wrb *wrb)779{780 wrb->frag_pa_hi = 0;781 wrb->frag_pa_lo = 0;782 wrb->frag_len = 0;783 wrb->rsvd0 = 0;784}785 786static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,787 struct sk_buff *skb)788{789 u8 vlan_prio;790 u16 vlan_tag;791 792 vlan_tag = skb_vlan_tag_get(skb);793 vlan_prio = skb_vlan_tag_get_prio(skb);794 /* If vlan priority provided by OS is NOT in available bmap */795 if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))796 vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |797 adapter->recommended_prio_bits;798 799 return vlan_tag;800}801 802/* Used only for IP tunnel packets */803static u16 skb_inner_ip_proto(struct sk_buff *skb)804{805 return (inner_ip_hdr(skb)->version == 4) ?806 inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr;807}808 809static u16 skb_ip_proto(struct sk_buff *skb)810{811 return (ip_hdr(skb)->version == 4) ?812 ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr;813}814 815static inline bool be_is_txq_full(struct be_tx_obj *txo)816{817 return atomic_read(&txo->q.used) + BE_MAX_TX_FRAG_COUNT >= txo->q.len;818}819 820static inline bool be_can_txq_wake(struct be_tx_obj *txo)821{822 return atomic_read(&txo->q.used) < txo->q.len / 2;823}824 825static inline bool be_is_tx_compl_pending(struct be_tx_obj *txo)826{827 return atomic_read(&txo->q.used) > txo->pend_wrb_cnt;828}829 830static void be_get_wrb_params_from_skb(struct be_adapter *adapter,831 struct sk_buff *skb,832 struct be_wrb_params *wrb_params)833{834 u16 proto;835 836 if (skb_is_gso(skb)) {837 BE_WRB_F_SET(wrb_params->features, LSO, 1);838 wrb_params->lso_mss = skb_shinfo(skb)->gso_size;839 if (skb_is_gso_v6(skb) && !lancer_chip(adapter))840 BE_WRB_F_SET(wrb_params->features, LSO6, 1);841 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {842 if (skb->encapsulation) {843 BE_WRB_F_SET(wrb_params->features, IPCS, 1);844 proto = skb_inner_ip_proto(skb);845 } else {846 proto = skb_ip_proto(skb);847 }848 if (proto == IPPROTO_TCP)849 BE_WRB_F_SET(wrb_params->features, TCPCS, 1);850 else if (proto == IPPROTO_UDP)851 BE_WRB_F_SET(wrb_params->features, UDPCS, 1);852 }853 854 if (skb_vlan_tag_present(skb)) {855 BE_WRB_F_SET(wrb_params->features, VLAN, 1);856 wrb_params->vlan_tag = be_get_tx_vlan_tag(adapter, skb);857 }858 859 BE_WRB_F_SET(wrb_params->features, CRC, 1);860}861 862static void wrb_fill_hdr(struct be_adapter *adapter,863 struct be_eth_hdr_wrb *hdr,864 struct be_wrb_params *wrb_params,865 struct sk_buff *skb)866{867 memset(hdr, 0, sizeof(*hdr));868 869 SET_TX_WRB_HDR_BITS(crc, hdr,870 BE_WRB_F_GET(wrb_params->features, CRC));871 SET_TX_WRB_HDR_BITS(ipcs, hdr,872 BE_WRB_F_GET(wrb_params->features, IPCS));873 SET_TX_WRB_HDR_BITS(tcpcs, hdr,874 BE_WRB_F_GET(wrb_params->features, TCPCS));875 SET_TX_WRB_HDR_BITS(udpcs, hdr,876 BE_WRB_F_GET(wrb_params->features, UDPCS));877 878 SET_TX_WRB_HDR_BITS(lso, hdr,879 BE_WRB_F_GET(wrb_params->features, LSO));880 SET_TX_WRB_HDR_BITS(lso6, hdr,881 BE_WRB_F_GET(wrb_params->features, LSO6));882 SET_TX_WRB_HDR_BITS(lso_mss, hdr, wrb_params->lso_mss);883 884 /* Hack to skip HW VLAN tagging needs evt = 1, compl = 0. When this885 * hack is not needed, the evt bit is set while ringing DB.886 */887 SET_TX_WRB_HDR_BITS(event, hdr,888 BE_WRB_F_GET(wrb_params->features, VLAN_SKIP_HW));889 SET_TX_WRB_HDR_BITS(vlan, hdr,890 BE_WRB_F_GET(wrb_params->features, VLAN));891 SET_TX_WRB_HDR_BITS(vlan_tag, hdr, wrb_params->vlan_tag);892 893 SET_TX_WRB_HDR_BITS(num_wrb, hdr, skb_wrb_cnt(skb));894 SET_TX_WRB_HDR_BITS(len, hdr, skb->len);895 SET_TX_WRB_HDR_BITS(mgmt, hdr,896 BE_WRB_F_GET(wrb_params->features, OS2BMC));897}898 899static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,900 bool unmap_single)901{902 dma_addr_t dma;903 u32 frag_len = le32_to_cpu(wrb->frag_len);904 905 906 dma = (u64)le32_to_cpu(wrb->frag_pa_hi) << 32 |907 (u64)le32_to_cpu(wrb->frag_pa_lo);908 if (frag_len) {909 if (unmap_single)910 dma_unmap_single(dev, dma, frag_len, DMA_TO_DEVICE);911 else912 dma_unmap_page(dev, dma, frag_len, DMA_TO_DEVICE);913 }914}915 916/* Grab a WRB header for xmit */917static u32 be_tx_get_wrb_hdr(struct be_tx_obj *txo)918{919 u32 head = txo->q.head;920 921 queue_head_inc(&txo->q);922 return head;923}924 925/* Set up the WRB header for xmit */926static void be_tx_setup_wrb_hdr(struct be_adapter *adapter,927 struct be_tx_obj *txo,928 struct be_wrb_params *wrb_params,929 struct sk_buff *skb, u16 head)930{931 u32 num_frags = skb_wrb_cnt(skb);932 struct be_queue_info *txq = &txo->q;933 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, head);934 935 wrb_fill_hdr(adapter, hdr, wrb_params, skb);936 be_dws_cpu_to_le(hdr, sizeof(*hdr));937 938 BUG_ON(txo->sent_skb_list[head]);939 txo->sent_skb_list[head] = skb;940 txo->last_req_hdr = head;941 atomic_add(num_frags, &txq->used);942 txo->last_req_wrb_cnt = num_frags;943 txo->pend_wrb_cnt += num_frags;944}945 946/* Setup a WRB fragment (buffer descriptor) for xmit */947static void be_tx_setup_wrb_frag(struct be_tx_obj *txo, dma_addr_t busaddr,948 int len)949{950 struct be_eth_wrb *wrb;951 struct be_queue_info *txq = &txo->q;952 953 wrb = queue_head_node(txq);954 wrb_fill(wrb, busaddr, len);955 queue_head_inc(txq);956}957 958/* Bring the queue back to the state it was in before be_xmit_enqueue() routine959 * was invoked. The producer index is restored to the previous packet and the960 * WRBs of the current packet are unmapped. Invoked to handle tx setup errors.961 */962static void be_xmit_restore(struct be_adapter *adapter,963 struct be_tx_obj *txo, u32 head, bool map_single,964 u32 copied)965{966 struct device *dev;967 struct be_eth_wrb *wrb;968 struct be_queue_info *txq = &txo->q;969 970 dev = &adapter->pdev->dev;971 txq->head = head;972 973 /* skip the first wrb (hdr); it's not mapped */974 queue_head_inc(txq);975 while (copied) {976 wrb = queue_head_node(txq);977 unmap_tx_frag(dev, wrb, map_single);978 map_single = false;979 copied -= le32_to_cpu(wrb->frag_len);980 queue_head_inc(txq);981 }982 983 txq->head = head;984}985 986/* Enqueue the given packet for transmit. This routine allocates WRBs for the987 * packet, dma maps the packet buffers and sets up the WRBs. Returns the number988 * of WRBs used up by the packet.989 */990static u32 be_xmit_enqueue(struct be_adapter *adapter, struct be_tx_obj *txo,991 struct sk_buff *skb,992 struct be_wrb_params *wrb_params)993{994 u32 i, copied = 0, wrb_cnt = skb_wrb_cnt(skb);995 struct device *dev = &adapter->pdev->dev;996 bool map_single = false;997 u32 head;998 dma_addr_t busaddr;999 int len;1000 1001 head = be_tx_get_wrb_hdr(txo);1002 1003 if (skb->len > skb->data_len) {1004 len = skb_headlen(skb);1005 1006 busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE);1007 if (dma_mapping_error(dev, busaddr))1008 goto dma_err;1009 map_single = true;1010 be_tx_setup_wrb_frag(txo, busaddr, len);1011 copied += len;1012 }1013 1014 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {1015 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];1016 len = skb_frag_size(frag);1017 1018 busaddr = skb_frag_dma_map(dev, frag, 0, len, DMA_TO_DEVICE);1019 if (dma_mapping_error(dev, busaddr))1020 goto dma_err;1021 be_tx_setup_wrb_frag(txo, busaddr, len);1022 copied += len;1023 }1024 1025 be_tx_setup_wrb_hdr(adapter, txo, wrb_params, skb, head);1026 1027 be_tx_stats_update(txo, skb);1028 return wrb_cnt;1029 1030dma_err:1031 adapter->drv_stats.dma_map_errors++;1032 be_xmit_restore(adapter, txo, head, map_single, copied);1033 return 0;1034}1035 1036static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)1037{1038 return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;1039}1040 1041static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,1042 struct sk_buff *skb,1043 struct be_wrb_params1044 *wrb_params)1045{1046 bool insert_vlan = false;1047 u16 vlan_tag = 0;1048 1049 skb = skb_share_check(skb, GFP_ATOMIC);1050 if (unlikely(!skb))1051 return skb;1052 1053 if (skb_vlan_tag_present(skb)) {1054 vlan_tag = be_get_tx_vlan_tag(adapter, skb);1055 insert_vlan = true;1056 }1057 1058 if (qnq_async_evt_rcvd(adapter) && adapter->pvid) {1059 if (!insert_vlan) {1060 vlan_tag = adapter->pvid;1061 insert_vlan = true;1062 }1063 /* f/w workaround to set skip_hw_vlan = 1, informs the F/W to1064 * skip VLAN insertion1065 */1066 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);1067 }1068 1069 if (insert_vlan) {1070 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),1071 vlan_tag);1072 if (unlikely(!skb))1073 return skb;1074 __vlan_hwaccel_clear_tag(skb);1075 }1076 1077 /* Insert the outer VLAN, if any */1078 if (adapter->qnq_vid) {1079 vlan_tag = adapter->qnq_vid;1080 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),1081 vlan_tag);1082 if (unlikely(!skb))1083 return skb;1084 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);1085 }1086 1087 return skb;1088}1089 1090static bool be_ipv6_exthdr_check(struct sk_buff *skb)1091{1092 struct ethhdr *eh = (struct ethhdr *)skb->data;1093 u16 offset = ETH_HLEN;1094 1095 if (eh->h_proto == htons(ETH_P_IPV6)) {1096 struct ipv6hdr *ip6h = (struct ipv6hdr *)(skb->data + offset);1097 1098 offset += sizeof(struct ipv6hdr);1099 if (ip6h->nexthdr != NEXTHDR_TCP &&1100 ip6h->nexthdr != NEXTHDR_UDP) {1101 struct ipv6_opt_hdr *ehdr =1102 (struct ipv6_opt_hdr *)(skb->data + offset);1103 1104 /* offending pkt: 2nd byte following IPv6 hdr is 0xff */1105 if (ehdr->hdrlen == 0xff)1106 return true;1107 }1108 }1109 return false;1110}1111 1112static int be_vlan_tag_tx_chk(struct be_adapter *adapter, struct sk_buff *skb)1113{1114 return skb_vlan_tag_present(skb) || adapter->pvid || adapter->qnq_vid;1115}1116 1117static int be_ipv6_tx_stall_chk(struct be_adapter *adapter, struct sk_buff *skb)1118{1119 return BE3_chip(adapter) && be_ipv6_exthdr_check(skb);1120}1121 1122static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,1123 struct sk_buff *skb,1124 struct be_wrb_params1125 *wrb_params)1126{1127 struct vlan_ethhdr *veh = skb_vlan_eth_hdr(skb);1128 unsigned int eth_hdr_len;1129 struct iphdr *ip;1130 1131 /* For padded packets, BE HW modifies tot_len field in IP header1132 * incorrecly when VLAN tag is inserted by HW.1133 * For padded packets, Lancer computes incorrect checksum.1134 */1135 eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ?1136 VLAN_ETH_HLEN : ETH_HLEN;1137 if (skb->len <= 60 &&1138 (lancer_chip(adapter) || BE3_chip(adapter) ||1139 skb_vlan_tag_present(skb)) && is_ipv4_pkt(skb)) {1140 ip = (struct iphdr *)ip_hdr(skb);1141 if (unlikely(pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len))))1142 goto tx_drop;1143 }1144 1145 /* If vlan tag is already inlined in the packet, skip HW VLAN1146 * tagging in pvid-tagging mode1147 */1148 if (be_pvid_tagging_enabled(adapter) &&1149 veh->h_vlan_proto == htons(ETH_P_8021Q))1150 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);1151 1152 /* HW has a bug wherein it will calculate CSUM for VLAN1153 * pkts even though it is disabled.1154 * Manually insert VLAN in pkt.1155 */1156 if (skb->ip_summed != CHECKSUM_PARTIAL &&1157 skb_vlan_tag_present(skb)) {1158 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);1159 if (unlikely(!skb))1160 goto err;1161 }1162 1163 /* HW may lockup when VLAN HW tagging is requested on1164 * certain ipv6 packets. Drop such pkts if the HW workaround to1165 * skip HW tagging is not enabled by FW.1166 */1167 if (unlikely(be_ipv6_tx_stall_chk(adapter, skb) &&1168 (adapter->pvid || adapter->qnq_vid) &&1169 !qnq_async_evt_rcvd(adapter)))1170 goto tx_drop;1171 1172 /* Manual VLAN tag insertion to prevent:1173 * ASIC lockup when the ASIC inserts VLAN tag into1174 * certain ipv6 packets. Insert VLAN tags in driver,1175 * and set event, completion, vlan bits accordingly1176 * in the Tx WRB.1177 */1178 if (be_ipv6_tx_stall_chk(adapter, skb) &&1179 be_vlan_tag_tx_chk(adapter, skb)) {1180 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);1181 if (unlikely(!skb))1182 goto err;1183 }1184 1185 return skb;1186tx_drop:1187 dev_kfree_skb_any(skb);1188err:1189 return NULL;1190}1191 1192static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter,1193 struct sk_buff *skb,1194 struct be_wrb_params *wrb_params)1195{1196 int err;1197 1198 /* Lancer, SH and BE3 in SRIOV mode have a bug wherein1199 * packets that are 32b or less may cause a transmit stall1200 * on that port. The workaround is to pad such packets1201 * (len <= 32 bytes) to a minimum length of 36b.1202 */1203 if (skb->len <= 32) {1204 if (skb_put_padto(skb, 36))1205 return NULL;1206 }1207 1208 if (BEx_chip(adapter) || lancer_chip(adapter)) {1209 skb = be_lancer_xmit_workarounds(adapter, skb, wrb_params);1210 if (!skb)1211 return NULL;1212 }1213 1214 /* The stack can send us skbs with length greater than1215 * what the HW can handle. Trim the extra bytes.1216 */1217 WARN_ON_ONCE(skb->len > BE_MAX_GSO_SIZE);1218 err = pskb_trim(skb, BE_MAX_GSO_SIZE);1219 WARN_ON(err);1220 1221 return skb;1222}1223 1224static void be_xmit_flush(struct be_adapter *adapter, struct be_tx_obj *txo)1225{1226 struct be_queue_info *txq = &txo->q;1227 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, txo->last_req_hdr);1228 1229 /* Mark the last request eventable if it hasn't been marked already */1230 if (!(hdr->dw[2] & cpu_to_le32(TX_HDR_WRB_EVT)))1231 hdr->dw[2] |= cpu_to_le32(TX_HDR_WRB_EVT | TX_HDR_WRB_COMPL);1232 1233 /* compose a dummy wrb if there are odd set of wrbs to notify */1234 if (!lancer_chip(adapter) && (txo->pend_wrb_cnt & 1)) {1235 wrb_fill_dummy(queue_head_node(txq));1236 queue_head_inc(txq);1237 atomic_inc(&txq->used);1238 txo->pend_wrb_cnt++;1239 hdr->dw[2] &= ~cpu_to_le32(TX_HDR_WRB_NUM_MASK <<1240 TX_HDR_WRB_NUM_SHIFT);1241 hdr->dw[2] |= cpu_to_le32((txo->last_req_wrb_cnt + 1) <<1242 TX_HDR_WRB_NUM_SHIFT);1243 }1244 be_txq_notify(adapter, txo, txo->pend_wrb_cnt);1245 txo->pend_wrb_cnt = 0;1246}1247 1248/* OS2BMC related */1249 1250#define DHCP_CLIENT_PORT 681251#define DHCP_SERVER_PORT 671252#define NET_BIOS_PORT1 1371253#define NET_BIOS_PORT2 1381254#define DHCPV6_RAS_PORT 5471255 1256#define is_mc_allowed_on_bmc(adapter, eh) \1257 (!is_multicast_filt_enabled(adapter) && \1258 is_multicast_ether_addr(eh->h_dest) && \1259 !is_broadcast_ether_addr(eh->h_dest))1260 1261#define is_bc_allowed_on_bmc(adapter, eh) \1262 (!is_broadcast_filt_enabled(adapter) && \1263 is_broadcast_ether_addr(eh->h_dest))1264 1265#define is_arp_allowed_on_bmc(adapter, skb) \1266 (is_arp(skb) && is_arp_filt_enabled(adapter))1267 1268#define is_arp(skb) (skb->protocol == htons(ETH_P_ARP))1269 1270#define is_arp_filt_enabled(adapter) \1271 (adapter->bmc_filt_mask & (BMC_FILT_BROADCAST_ARP))1272 1273#define is_dhcp_client_filt_enabled(adapter) \1274 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_CLIENT)1275 1276#define is_dhcp_srvr_filt_enabled(adapter) \1277 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_SERVER)1278 1279#define is_nbios_filt_enabled(adapter) \1280 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_NET_BIOS)1281 1282#define is_ipv6_na_filt_enabled(adapter) \1283 (adapter->bmc_filt_mask & \1284 BMC_FILT_MULTICAST_IPV6_NEIGH_ADVER)1285 1286#define is_ipv6_ra_filt_enabled(adapter) \1287 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RA)1288 1289#define is_ipv6_ras_filt_enabled(adapter) \1290 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RAS)1291 1292#define is_broadcast_filt_enabled(adapter) \1293 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST)1294 1295#define is_multicast_filt_enabled(adapter) \1296 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST)1297 1298static bool be_send_pkt_to_bmc(struct be_adapter *adapter,1299 struct sk_buff **skb)1300{1301 struct ethhdr *eh = (struct ethhdr *)(*skb)->data;1302 bool os2bmc = false;1303 1304 if (!be_is_os2bmc_enabled(adapter))1305 goto done;1306 1307 if (!is_multicast_ether_addr(eh->h_dest))1308 goto done;1309 1310 if (is_mc_allowed_on_bmc(adapter, eh) ||1311 is_bc_allowed_on_bmc(adapter, eh) ||1312 is_arp_allowed_on_bmc(adapter, (*skb))) {1313 os2bmc = true;1314 goto done;1315 }1316 1317 if ((*skb)->protocol == htons(ETH_P_IPV6)) {1318 struct ipv6hdr *hdr = ipv6_hdr((*skb));1319 u8 nexthdr = hdr->nexthdr;1320 1321 if (nexthdr == IPPROTO_ICMPV6) {1322 struct icmp6hdr *icmp6 = icmp6_hdr((*skb));1323 1324 switch (icmp6->icmp6_type) {1325 case NDISC_ROUTER_ADVERTISEMENT:1326 os2bmc = is_ipv6_ra_filt_enabled(adapter);1327 goto done;1328 case NDISC_NEIGHBOUR_ADVERTISEMENT:1329 os2bmc = is_ipv6_na_filt_enabled(adapter);1330 goto done;1331 default:1332 break;1333 }1334 }1335 }1336 1337 if (is_udp_pkt((*skb))) {1338 struct udphdr *udp = udp_hdr((*skb));1339 1340 switch (ntohs(udp->dest)) {1341 case DHCP_CLIENT_PORT:1342 os2bmc = is_dhcp_client_filt_enabled(adapter);1343 goto done;1344 case DHCP_SERVER_PORT:1345 os2bmc = is_dhcp_srvr_filt_enabled(adapter);1346 goto done;1347 case NET_BIOS_PORT1:1348 case NET_BIOS_PORT2:1349 os2bmc = is_nbios_filt_enabled(adapter);1350 goto done;1351 case DHCPV6_RAS_PORT:1352 os2bmc = is_ipv6_ras_filt_enabled(adapter);1353 goto done;1354 default:1355 break;1356 }1357 }1358done:1359 /* For packets over a vlan, which are destined1360 * to BMC, asic expects the vlan to be inline in the packet.1361 */1362 if (os2bmc)1363 *skb = be_insert_vlan_in_pkt(adapter, *skb, NULL);1364 1365 return os2bmc;1366}1367 1368static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)1369{1370 struct be_adapter *adapter = netdev_priv(netdev);1371 u16 q_idx = skb_get_queue_mapping(skb);1372 struct be_tx_obj *txo = &adapter->tx_obj[q_idx];1373 struct be_wrb_params wrb_params = { 0 };1374 bool flush = !netdev_xmit_more();1375 u16 wrb_cnt;1376 1377 skb = be_xmit_workarounds(adapter, skb, &wrb_params);1378 if (unlikely(!skb))1379 goto drop;1380 1381 be_get_wrb_params_from_skb(adapter, skb, &wrb_params);1382 1383 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);1384 if (unlikely(!wrb_cnt))1385 goto drop_skb;1386 1387 /* if os2bmc is enabled and if the pkt is destined to bmc,1388 * enqueue the pkt a 2nd time with mgmt bit set.1389 */1390 if (be_send_pkt_to_bmc(adapter, &skb)) {1391 BE_WRB_F_SET(wrb_params.features, OS2BMC, 1);1392 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);1393 if (unlikely(!wrb_cnt))1394 goto drop_skb;1395 else1396 skb_get(skb);1397 }1398 1399 if (be_is_txq_full(txo)) {1400 netif_stop_subqueue(netdev, q_idx);1401 tx_stats(txo)->tx_stops++;1402 }1403 1404 if (flush || __netif_subqueue_stopped(netdev, q_idx))1405 be_xmit_flush(adapter, txo);1406 1407 return NETDEV_TX_OK;1408drop_skb:1409 dev_kfree_skb_any(skb);1410drop:1411 tx_stats(txo)->tx_drv_drops++;1412 /* Flush the already enqueued tx requests */1413 if (flush && txo->pend_wrb_cnt)1414 be_xmit_flush(adapter, txo);1415 1416 return NETDEV_TX_OK;1417}1418 1419static void be_tx_timeout(struct net_device *netdev, unsigned int txqueue)1420{1421 struct be_adapter *adapter = netdev_priv(netdev);1422 struct device *dev = &adapter->pdev->dev;1423 struct be_tx_obj *txo;1424 struct sk_buff *skb;1425 struct tcphdr *tcphdr;1426 struct udphdr *udphdr;1427 u32 *entry;1428 int status;1429 int i, j;1430 1431 for_all_tx_queues(adapter, txo, i) {1432 dev_info(dev, "TXQ Dump: %d H: %d T: %d used: %d, qid: 0x%x\n",1433 i, txo->q.head, txo->q.tail,1434 atomic_read(&txo->q.used), txo->q.id);1435 1436 entry = txo->q.dma_mem.va;1437 for (j = 0; j < TX_Q_LEN * 4; j += 4) {1438 if (entry[j] != 0 || entry[j + 1] != 0 ||1439 entry[j + 2] != 0 || entry[j + 3] != 0) {1440 dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n",1441 j, entry[j], entry[j + 1],1442 entry[j + 2], entry[j + 3]);1443 }1444 }1445 1446 entry = txo->cq.dma_mem.va;1447 dev_info(dev, "TXCQ Dump: %d H: %d T: %d used: %d\n",1448 i, txo->cq.head, txo->cq.tail,1449 atomic_read(&txo->cq.used));1450 for (j = 0; j < TX_CQ_LEN * 4; j += 4) {1451 if (entry[j] != 0 || entry[j + 1] != 0 ||1452 entry[j + 2] != 0 || entry[j + 3] != 0) {1453 dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n",1454 j, entry[j], entry[j + 1],1455 entry[j + 2], entry[j + 3]);1456 }1457 }1458 1459 for (j = 0; j < TX_Q_LEN; j++) {1460 if (txo->sent_skb_list[j]) {1461 skb = txo->sent_skb_list[j];1462 if (ip_hdr(skb)->protocol == IPPROTO_TCP) {1463 tcphdr = tcp_hdr(skb);1464 dev_info(dev, "TCP source port %d\n",1465 ntohs(tcphdr->source));1466 dev_info(dev, "TCP dest port %d\n",1467 ntohs(tcphdr->dest));1468 dev_info(dev, "TCP sequence num %d\n",1469 ntohs(tcphdr->seq));1470 dev_info(dev, "TCP ack_seq %d\n",1471 ntohs(tcphdr->ack_seq));1472 } else if (ip_hdr(skb)->protocol ==1473 IPPROTO_UDP) {1474 udphdr = udp_hdr(skb);1475 dev_info(dev, "UDP source port %d\n",1476 ntohs(udphdr->source));1477 dev_info(dev, "UDP dest port %d\n",1478 ntohs(udphdr->dest));1479 }1480 dev_info(dev, "skb[%d] %p len %d proto 0x%x\n",1481 j, skb, skb->len, skb->protocol);1482 }1483 }1484 }1485 1486 if (lancer_chip(adapter)) {1487 dev_info(dev, "Initiating reset due to tx timeout\n");1488 dev_info(dev, "Resetting adapter\n");1489 status = lancer_physdev_ctrl(adapter,1490 PHYSDEV_CONTROL_FW_RESET_MASK);1491 if (status)1492 dev_err(dev, "Reset failed .. Reboot server\n");1493 }1494}1495 1496static inline bool be_in_all_promisc(struct be_adapter *adapter)1497{1498 return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) ==1499 BE_IF_FLAGS_ALL_PROMISCUOUS;1500}1501 1502static int be_set_vlan_promisc(struct be_adapter *adapter)1503{1504 struct device *dev = &adapter->pdev->dev;1505 int status;1506 1507 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS)1508 return 0;1509 1510 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, ON);1511 if (!status) {1512 dev_info(dev, "Enabled VLAN promiscuous mode\n");1513 adapter->if_flags |= BE_IF_FLAGS_VLAN_PROMISCUOUS;1514 } else {1515 dev_err(dev, "Failed to enable VLAN promiscuous mode\n");1516 }1517 return status;1518}1519 1520static int be_clear_vlan_promisc(struct be_adapter *adapter)1521{1522 struct device *dev = &adapter->pdev->dev;1523 int status;1524 1525 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, OFF);1526 if (!status) {1527 dev_info(dev, "Disabling VLAN promiscuous mode\n");1528 adapter->if_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;1529 }1530 return status;1531}1532 1533/*1534 * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.1535 * If the user configures more, place BE in vlan promiscuous mode.1536 */1537static int be_vid_config(struct be_adapter *adapter)1538{1539 struct device *dev = &adapter->pdev->dev;1540 u16 vids[BE_NUM_VLANS_SUPPORTED];1541 u16 num = 0, i = 0;1542 int status = 0;1543 1544 /* No need to change the VLAN state if the I/F is in promiscuous */1545 if (adapter->netdev->flags & IFF_PROMISC)1546 return 0;1547 1548 if (adapter->vlans_added > be_max_vlans(adapter))1549 return be_set_vlan_promisc(adapter);1550 1551 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {1552 status = be_clear_vlan_promisc(adapter);1553 if (status)1554 return status;1555 }1556 /* Construct VLAN Table to give to HW */1557 for_each_set_bit(i, adapter->vids, VLAN_N_VID)1558 vids[num++] = cpu_to_le16(i);1559 1560 status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 0);1561 if (status) {1562 dev_err(dev, "Setting HW VLAN filtering failed\n");1563 /* Set to VLAN promisc mode as setting VLAN filter failed */1564 if (addl_status(status) == MCC_ADDL_STATUS_INSUFFICIENT_VLANS ||1565 addl_status(status) ==1566 MCC_ADDL_STATUS_INSUFFICIENT_RESOURCES)1567 return be_set_vlan_promisc(adapter);1568 }1569 return status;1570}1571 1572static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid)1573{1574 struct be_adapter *adapter = netdev_priv(netdev);1575 int status = 0;1576 1577 mutex_lock(&adapter->rx_filter_lock);1578 1579 /* Packets with VID 0 are always received by Lancer by default */1580 if (lancer_chip(adapter) && vid == 0)1581 goto done;1582 1583 if (test_bit(vid, adapter->vids))1584 goto done;1585 1586 set_bit(vid, adapter->vids);1587 adapter->vlans_added++;1588 1589 status = be_vid_config(adapter);1590done:1591 mutex_unlock(&adapter->rx_filter_lock);1592 return status;1593}1594 1595static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid)1596{1597 struct be_adapter *adapter = netdev_priv(netdev);1598 int status = 0;1599 1600 mutex_lock(&adapter->rx_filter_lock);1601 1602 /* Packets with VID 0 are always received by Lancer by default */1603 if (lancer_chip(adapter) && vid == 0)1604 goto done;1605 1606 if (!test_bit(vid, adapter->vids))1607 goto done;1608 1609 clear_bit(vid, adapter->vids);1610 adapter->vlans_added--;1611 1612 status = be_vid_config(adapter);1613done:1614 mutex_unlock(&adapter->rx_filter_lock);1615 return status;1616}1617 1618static void be_set_all_promisc(struct be_adapter *adapter)1619{1620 be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, ON);1621 adapter->if_flags |= BE_IF_FLAGS_ALL_PROMISCUOUS;1622}1623 1624static void be_set_mc_promisc(struct be_adapter *adapter)1625{1626 int status;1627 1628 if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS)1629 return;1630 1631 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MCAST_PROMISCUOUS, ON);1632 if (!status)1633 adapter->if_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS;1634}1635 1636static void be_set_uc_promisc(struct be_adapter *adapter)1637{1638 int status;1639 1640 if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS)1641 return;1642 1643 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, ON);1644 if (!status)1645 adapter->if_flags |= BE_IF_FLAGS_PROMISCUOUS;1646}1647 1648static void be_clear_uc_promisc(struct be_adapter *adapter)1649{1650 int status;1651 1652 if (!(adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS))1653 return;1654 1655 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, OFF);1656 if (!status)1657 adapter->if_flags &= ~BE_IF_FLAGS_PROMISCUOUS;1658}1659 1660/* The below 2 functions are the callback args for __dev_mc_sync/dev_uc_sync().1661 * We use a single callback function for both sync and unsync. We really don't1662 * add/remove addresses through this callback. But, we use it to detect changes1663 * to the uc/mc lists. The entire uc/mc list is programmed in be_set_rx_mode().1664 */1665static int be_uc_list_update(struct net_device *netdev,1666 const unsigned char *addr)1667{1668 struct be_adapter *adapter = netdev_priv(netdev);1669 1670 adapter->update_uc_list = true;1671 return 0;1672}1673 1674static int be_mc_list_update(struct net_device *netdev,1675 const unsigned char *addr)1676{1677 struct be_adapter *adapter = netdev_priv(netdev);1678 1679 adapter->update_mc_list = true;1680 return 0;1681}1682 1683static void be_set_mc_list(struct be_adapter *adapter)1684{1685 struct net_device *netdev = adapter->netdev;1686 struct netdev_hw_addr *ha;1687 bool mc_promisc = false;1688 int status;1689 1690 netif_addr_lock_bh(netdev);1691 __dev_mc_sync(netdev, be_mc_list_update, be_mc_list_update);1692 1693 if (netdev->flags & IFF_PROMISC) {1694 adapter->update_mc_list = false;1695 } else if (netdev->flags & IFF_ALLMULTI ||1696 netdev_mc_count(netdev) > be_max_mc(adapter)) {1697 /* Enable multicast promisc if num configured exceeds1698 * what we support1699 */1700 mc_promisc = true;1701 adapter->update_mc_list = false;1702 } else if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS) {1703 /* Update mc-list unconditionally if the iface was previously1704 * in mc-promisc mode and now is out of that mode.1705 */1706 adapter->update_mc_list = true;1707 }1708 1709 if (adapter->update_mc_list) {1710 int i = 0;1711 1712 /* cache the mc-list in adapter */1713 netdev_for_each_mc_addr(ha, netdev) {1714 ether_addr_copy(adapter->mc_list[i].mac, ha->addr);1715 i++;1716 }1717 adapter->mc_count = netdev_mc_count(netdev);1718 }1719 netif_addr_unlock_bh(netdev);1720 1721 if (mc_promisc) {1722 be_set_mc_promisc(adapter);1723 } else if (adapter->update_mc_list) {1724 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, ON);1725 if (!status)1726 adapter->if_flags &= ~BE_IF_FLAGS_MCAST_PROMISCUOUS;1727 else1728 be_set_mc_promisc(adapter);1729 1730 adapter->update_mc_list = false;1731 }1732}1733 1734static void be_clear_mc_list(struct be_adapter *adapter)1735{1736 struct net_device *netdev = adapter->netdev;1737 1738 __dev_mc_unsync(netdev, NULL);1739 be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, OFF);1740 adapter->mc_count = 0;1741}1742 1743static int be_uc_mac_add(struct be_adapter *adapter, int uc_idx)1744{1745 if (ether_addr_equal(adapter->uc_list[uc_idx].mac, adapter->dev_mac)) {1746 adapter->pmac_id[uc_idx + 1] = adapter->pmac_id[0];1747 return 0;1748 }1749 1750 return be_cmd_pmac_add(adapter, adapter->uc_list[uc_idx].mac,1751 adapter->if_handle,1752 &adapter->pmac_id[uc_idx + 1], 0);1753}1754 1755static void be_uc_mac_del(struct be_adapter *adapter, int pmac_id)1756{1757 if (pmac_id == adapter->pmac_id[0])1758 return;1759 1760 be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);1761}1762 1763static void be_set_uc_list(struct be_adapter *adapter)1764{1765 struct net_device *netdev = adapter->netdev;1766 struct netdev_hw_addr *ha;1767 bool uc_promisc = false;1768 int curr_uc_macs = 0, i;1769 1770 netif_addr_lock_bh(netdev);1771 __dev_uc_sync(netdev, be_uc_list_update, be_uc_list_update);1772 1773 if (netdev->flags & IFF_PROMISC) {1774 adapter->update_uc_list = false;1775 } else if (netdev_uc_count(netdev) > (be_max_uc(adapter) - 1)) {1776 uc_promisc = true;1777 adapter->update_uc_list = false;1778 } else if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS) {1779 /* Update uc-list unconditionally if the iface was previously1780 * in uc-promisc mode and now is out of that mode.1781 */1782 adapter->update_uc_list = true;1783 }1784 1785 if (adapter->update_uc_list) {1786 /* cache the uc-list in adapter array */1787 i = 0;1788 netdev_for_each_uc_addr(ha, netdev) {1789 ether_addr_copy(adapter->uc_list[i].mac, ha->addr);1790 i++;1791 }1792 curr_uc_macs = netdev_uc_count(netdev);1793 }1794 netif_addr_unlock_bh(netdev);1795 1796 if (uc_promisc) {1797 be_set_uc_promisc(adapter);1798 } else if (adapter->update_uc_list) {1799 be_clear_uc_promisc(adapter);1800 1801 for (i = 0; i < adapter->uc_macs; i++)1802 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);1803 1804 for (i = 0; i < curr_uc_macs; i++)1805 be_uc_mac_add(adapter, i);1806 adapter->uc_macs = curr_uc_macs;1807 adapter->update_uc_list = false;1808 }1809}1810 1811static void be_clear_uc_list(struct be_adapter *adapter)1812{1813 struct net_device *netdev = adapter->netdev;1814 int i;1815 1816 __dev_uc_unsync(netdev, NULL);1817 for (i = 0; i < adapter->uc_macs; i++)1818 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);1819 1820 adapter->uc_macs = 0;1821}1822 1823static void __be_set_rx_mode(struct be_adapter *adapter)1824{1825 struct net_device *netdev = adapter->netdev;1826 1827 mutex_lock(&adapter->rx_filter_lock);1828 1829 if (netdev->flags & IFF_PROMISC) {1830 if (!be_in_all_promisc(adapter))1831 be_set_all_promisc(adapter);1832 } else if (be_in_all_promisc(adapter)) {1833 /* We need to re-program the vlan-list or clear1834 * vlan-promisc mode (if needed) when the interface1835 * comes out of promisc mode.1836 */1837 be_vid_config(adapter);1838 }1839 1840 be_set_uc_list(adapter);1841 be_set_mc_list(adapter);1842 1843 mutex_unlock(&adapter->rx_filter_lock);1844}1845 1846static void be_work_set_rx_mode(struct work_struct *work)1847{1848 struct be_cmd_work *cmd_work =1849 container_of(work, struct be_cmd_work, work);1850 1851 __be_set_rx_mode(cmd_work->adapter);1852 kfree(cmd_work);1853}1854 1855static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)1856{1857 struct be_adapter *adapter = netdev_priv(netdev);1858 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];1859 int status;1860 1861 if (!sriov_enabled(adapter))1862 return -EPERM;1863 1864 if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs)1865 return -EINVAL;1866 1867 /* Proceed further only if user provided MAC is different1868 * from active MAC1869 */1870 if (ether_addr_equal(mac, vf_cfg->mac_addr))1871 return 0;1872 1873 if (BEx_chip(adapter)) {1874 be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id,1875 vf + 1);1876 1877 status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle,1878 &vf_cfg->pmac_id, vf + 1);1879 } else {1880 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,1881 vf + 1);1882 }1883 1884 if (status) {1885 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed: %#x",1886 mac, vf, status);1887 return be_cmd_status(status);1888 }1889 1890 ether_addr_copy(vf_cfg->mac_addr, mac);1891 1892 return 0;1893}1894 1895static int be_get_vf_config(struct net_device *netdev, int vf,1896 struct ifla_vf_info *vi)1897{1898 struct be_adapter *adapter = netdev_priv(netdev);1899 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];1900 1901 if (!sriov_enabled(adapter))1902 return -EPERM;1903 1904 if (vf >= adapter->num_vfs)1905 return -EINVAL;1906 1907 vi->vf = vf;1908 vi->max_tx_rate = vf_cfg->tx_rate;1909 vi->min_tx_rate = 0;1910 vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK;1911 vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT;1912 memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN);1913 vi->linkstate = adapter->vf_cfg[vf].plink_tracking;1914 vi->spoofchk = adapter->vf_cfg[vf].spoofchk;1915 1916 return 0;1917}1918 1919static int be_set_vf_tvt(struct be_adapter *adapter, int vf, u16 vlan)1920{1921 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];1922 u16 vids[BE_NUM_VLANS_SUPPORTED];1923 int vf_if_id = vf_cfg->if_handle;1924 int status;1925 1926 /* Enable Transparent VLAN Tagging */1927 status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, vf_if_id, 0, 0);1928 if (status)1929 return status;1930 1931 /* Clear pre-programmed VLAN filters on VF if any, if TVT is enabled */1932 vids[0] = 0;1933 status = be_cmd_vlan_config(adapter, vf_if_id, vids, 1, vf + 1);1934 if (!status)1935 dev_info(&adapter->pdev->dev,1936 "Cleared guest VLANs on VF%d", vf);1937 1938 /* After TVT is enabled, disallow VFs to program VLAN filters */1939 if (vf_cfg->privileges & BE_PRIV_FILTMGMT) {1940 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges &1941 ~BE_PRIV_FILTMGMT, vf + 1);1942 if (!status)1943 vf_cfg->privileges &= ~BE_PRIV_FILTMGMT;1944 }1945 return 0;1946}1947 1948static int be_clear_vf_tvt(struct be_adapter *adapter, int vf)1949{1950 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];1951 struct device *dev = &adapter->pdev->dev;1952 int status;1953 1954 /* Reset Transparent VLAN Tagging. */1955 status = be_cmd_set_hsw_config(adapter, BE_RESET_VLAN_TAG_ID, vf + 1,1956 vf_cfg->if_handle, 0, 0);1957 if (status)1958 return status;1959 1960 /* Allow VFs to program VLAN filtering */1961 if (!(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {1962 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges |1963 BE_PRIV_FILTMGMT, vf + 1);1964 if (!status) {1965 vf_cfg->privileges |= BE_PRIV_FILTMGMT;1966 dev_info(dev, "VF%d: FILTMGMT priv enabled", vf);1967 }1968 }1969 1970 dev_info(dev,1971 "Disable/re-enable i/f in VM to clear Transparent VLAN tag");1972 return 0;1973}1974 1975static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,1976 __be16 vlan_proto)1977{1978 struct be_adapter *adapter = netdev_priv(netdev);1979 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];1980 int status;1981 1982 if (!sriov_enabled(adapter))1983 return -EPERM;1984 1985 if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7)1986 return -EINVAL;1987 1988 if (vlan_proto != htons(ETH_P_8021Q))1989 return -EPROTONOSUPPORT;1990 1991 if (vlan || qos) {1992 vlan |= qos << VLAN_PRIO_SHIFT;1993 status = be_set_vf_tvt(adapter, vf, vlan);1994 } else {1995 status = be_clear_vf_tvt(adapter, vf);1996 }1997 1998 if (status) {1999 dev_err(&adapter->pdev->dev,2000 "VLAN %d config on VF %d failed : %#x\n", vlan, vf,2001 status);2002 return be_cmd_status(status);2003 }2004 2005 vf_cfg->vlan_tag = vlan;2006 return 0;2007}2008 2009static int be_set_vf_tx_rate(struct net_device *netdev, int vf,2010 int min_tx_rate, int max_tx_rate)2011{2012 struct be_adapter *adapter = netdev_priv(netdev);2013 struct device *dev = &adapter->pdev->dev;2014 int percent_rate, status = 0;2015 u16 link_speed = 0;2016 u8 link_status;2017 2018 if (!sriov_enabled(adapter))2019 return -EPERM;2020 2021 if (vf >= adapter->num_vfs)2022 return -EINVAL;2023 2024 if (min_tx_rate)2025 return -EINVAL;2026 2027 if (!max_tx_rate)2028 goto config_qos;2029 2030 status = be_cmd_link_status_query(adapter, &link_speed,2031 &link_status, 0);2032 if (status)2033 goto err;2034 2035 if (!link_status) {2036 dev_err(dev, "TX-rate setting not allowed when link is down\n");2037 status = -ENETDOWN;2038 goto err;2039 }2040 2041 if (max_tx_rate < 100 || max_tx_rate > link_speed) {2042 dev_err(dev, "TX-rate must be between 100 and %d Mbps\n",2043 link_speed);2044 status = -EINVAL;2045 goto err;2046 }2047 2048 /* On Skyhawk the QOS setting must be done only as a % value */2049 percent_rate = link_speed / 100;2050 if (skyhawk_chip(adapter) && (max_tx_rate % percent_rate)) {2051 dev_err(dev, "TX-rate must be a multiple of %d Mbps\n",2052 percent_rate);2053 status = -EINVAL;2054 goto err;2055 }2056 2057config_qos:2058 status = be_cmd_config_qos(adapter, max_tx_rate, link_speed, vf + 1);2059 if (status)2060 goto err;2061 2062 adapter->vf_cfg[vf].tx_rate = max_tx_rate;2063 return 0;2064 2065err:2066 dev_err(dev, "TX-rate setting of %dMbps on VF%d failed\n",2067 max_tx_rate, vf);2068 return be_cmd_status(status);2069}2070 2071static int be_set_vf_link_state(struct net_device *netdev, int vf,2072 int link_state)2073{2074 struct be_adapter *adapter = netdev_priv(netdev);2075 int status;2076 2077 if (!sriov_enabled(adapter))2078 return -EPERM;2079 2080 if (vf >= adapter->num_vfs)2081 return -EINVAL;2082 2083 status = be_cmd_set_logical_link_config(adapter, link_state, vf+1);2084 if (status) {2085 dev_err(&adapter->pdev->dev,2086 "Link state change on VF %d failed: %#x\n", vf, status);2087 return be_cmd_status(status);2088 }2089 2090 adapter->vf_cfg[vf].plink_tracking = link_state;2091 2092 return 0;2093}2094 2095static int be_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)2096{2097 struct be_adapter *adapter = netdev_priv(netdev);2098 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];2099 u8 spoofchk;2100 int status;2101 2102 if (!sriov_enabled(adapter))2103 return -EPERM;2104 2105 if (vf >= adapter->num_vfs)2106 return -EINVAL;2107 2108 if (BEx_chip(adapter))2109 return -EOPNOTSUPP;2110 2111 if (enable == vf_cfg->spoofchk)2112 return 0;2113 2114 spoofchk = enable ? ENABLE_MAC_SPOOFCHK : DISABLE_MAC_SPOOFCHK;2115 2116 status = be_cmd_set_hsw_config(adapter, 0, vf + 1, vf_cfg->if_handle,2117 0, spoofchk);2118 if (status) {2119 dev_err(&adapter->pdev->dev,2120 "Spoofchk change on VF %d failed: %#x\n", vf, status);2121 return be_cmd_status(status);2122 }2123 2124 vf_cfg->spoofchk = enable;2125 return 0;2126}2127 2128static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts,2129 ulong now)2130{2131 aic->rx_pkts_prev = rx_pkts;2132 aic->tx_reqs_prev = tx_pkts;2133 aic->jiffies = now;2134}2135 2136static int be_get_new_eqd(struct be_eq_obj *eqo)2137{2138 struct be_adapter *adapter = eqo->adapter;2139 int eqd, start;2140 struct be_aic_obj *aic;2141 struct be_rx_obj *rxo;2142 struct be_tx_obj *txo;2143 u64 rx_pkts = 0, tx_pkts = 0;2144 ulong now;2145 u32 pps, delta;2146 int i;2147 2148 aic = &adapter->aic_obj[eqo->idx];2149 if (!adapter->aic_enabled) {2150 if (aic->jiffies)2151 aic->jiffies = 0;2152 eqd = aic->et_eqd;2153 return eqd;2154 }2155 2156 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {2157 do {2158 start = u64_stats_fetch_begin(&rxo->stats.sync);2159 rx_pkts += rxo->stats.rx_pkts;2160 } while (u64_stats_fetch_retry(&rxo->stats.sync, start));2161 }2162 2163 for_all_tx_queues_on_eq(adapter, eqo, txo, i) {2164 do {2165 start = u64_stats_fetch_begin(&txo->stats.sync);2166 tx_pkts += txo->stats.tx_reqs;2167 } while (u64_stats_fetch_retry(&txo->stats.sync, start));2168 }2169 2170 /* Skip, if wrapped around or first calculation */2171 now = jiffies;2172 if (!aic->jiffies || time_before(now, aic->jiffies) ||2173 rx_pkts < aic->rx_pkts_prev ||2174 tx_pkts < aic->tx_reqs_prev) {2175 be_aic_update(aic, rx_pkts, tx_pkts, now);2176 return aic->prev_eqd;2177 }2178 2179 delta = jiffies_to_msecs(now - aic->jiffies);2180 if (delta == 0)2181 return aic->prev_eqd;2182 2183 pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) +2184 (((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta);2185 eqd = (pps / 15000) << 2;2186 2187 if (eqd < 8)2188 eqd = 0;2189 eqd = min_t(u32, eqd, aic->max_eqd);2190 eqd = max_t(u32, eqd, aic->min_eqd);2191 2192 be_aic_update(aic, rx_pkts, tx_pkts, now);2193 2194 return eqd;2195}2196 2197/* For Skyhawk-R only */2198static u32 be_get_eq_delay_mult_enc(struct be_eq_obj *eqo)2199{2200 struct be_adapter *adapter = eqo->adapter;2201 struct be_aic_obj *aic = &adapter->aic_obj[eqo->idx];2202 ulong now = jiffies;2203 int eqd;2204 u32 mult_enc;2205 2206 if (!adapter->aic_enabled)2207 return 0;2208 2209 if (jiffies_to_msecs(now - aic->jiffies) < 1)2210 eqd = aic->prev_eqd;2211 else2212 eqd = be_get_new_eqd(eqo);2213 2214 if (eqd > 100)2215 mult_enc = R2I_DLY_ENC_1;2216 else if (eqd > 60)2217 mult_enc = R2I_DLY_ENC_2;2218 else if (eqd > 20)2219 mult_enc = R2I_DLY_ENC_3;2220 else2221 mult_enc = R2I_DLY_ENC_0;2222 2223 aic->prev_eqd = eqd;2224 2225 return mult_enc;2226}2227 2228void be_eqd_update(struct be_adapter *adapter, bool force_update)2229{2230 struct be_set_eqd set_eqd[MAX_EVT_QS];2231 struct be_aic_obj *aic;2232 struct be_eq_obj *eqo;2233 int i, num = 0, eqd;2234 2235 for_all_evt_queues(adapter, eqo, i) {2236 aic = &adapter->aic_obj[eqo->idx];2237 eqd = be_get_new_eqd(eqo);2238 if (force_update || eqd != aic->prev_eqd) {2239 set_eqd[num].delay_multiplier = (eqd * 65)/100;2240 set_eqd[num].eq_id = eqo->q.id;2241 aic->prev_eqd = eqd;2242 num++;2243 }2244 }2245 2246 if (num)2247 be_cmd_modify_eqd(adapter, set_eqd, num);2248}2249 2250static void be_rx_stats_update(struct be_rx_obj *rxo,2251 struct be_rx_compl_info *rxcp)2252{2253 struct be_rx_stats *stats = rx_stats(rxo);2254 2255 u64_stats_update_begin(&stats->sync);2256 stats->rx_compl++;2257 stats->rx_bytes += rxcp->pkt_size;2258 stats->rx_pkts++;2259 if (rxcp->tunneled)2260 stats->rx_vxlan_offload_pkts++;2261 if (rxcp->pkt_type == BE_MULTICAST_PACKET)2262 stats->rx_mcast_pkts++;2263 if (rxcp->err)2264 stats->rx_compl_err++;2265 u64_stats_update_end(&stats->sync);2266}2267 2268static inline bool csum_passed(struct be_rx_compl_info *rxcp)2269{2270 /* L4 checksum is not reliable for non TCP/UDP packets.2271 * Also ignore ipcksm for ipv6 pkts2272 */2273 return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&2274 (rxcp->ip_csum || rxcp->ipv6) && !rxcp->err;2275}2276 2277static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo)2278{2279 struct be_adapter *adapter = rxo->adapter;2280 struct be_rx_page_info *rx_page_info;2281 struct be_queue_info *rxq = &rxo->q;2282 u32 frag_idx = rxq->tail;2283 2284 rx_page_info = &rxo->page_info_tbl[frag_idx];2285 BUG_ON(!rx_page_info->page);2286 2287 if (rx_page_info->last_frag) {2288 dma_unmap_page(&adapter->pdev->dev,2289 dma_unmap_addr(rx_page_info, bus),2290 adapter->big_page_size, DMA_FROM_DEVICE);2291 rx_page_info->last_frag = false;2292 } else {2293 dma_sync_single_for_cpu(&adapter->pdev->dev,2294 dma_unmap_addr(rx_page_info, bus),2295 rx_frag_size, DMA_FROM_DEVICE);2296 }2297 2298 queue_tail_inc(rxq);2299 atomic_dec(&rxq->used);2300 return rx_page_info;2301}2302 2303/* Throwaway the data in the Rx completion */2304static void be_rx_compl_discard(struct be_rx_obj *rxo,2305 struct be_rx_compl_info *rxcp)2306{2307 struct be_rx_page_info *page_info;2308 u16 i, num_rcvd = rxcp->num_rcvd;2309 2310 for (i = 0; i < num_rcvd; i++) {2311 page_info = get_rx_page_info(rxo);2312 put_page(page_info->page);2313 memset(page_info, 0, sizeof(*page_info));2314 }2315}2316 2317/*2318 * skb_fill_rx_data forms a complete skb for an ether frame2319 * indicated by rxcp.2320 */2321static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb,2322 struct be_rx_compl_info *rxcp)2323{2324 struct be_rx_page_info *page_info;2325 u16 i, j;2326 u16 hdr_len, curr_frag_len, remaining;2327 u8 *start;2328 2329 page_info = get_rx_page_info(rxo);2330 start = page_address(page_info->page) + page_info->page_offset;2331 prefetch(start);2332 2333 /* Copy data in the first descriptor of this completion */2334 curr_frag_len = min(rxcp->pkt_size, rx_frag_size);2335 2336 skb->len = curr_frag_len;2337 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */2338 memcpy(skb->data, start, curr_frag_len);2339 /* Complete packet has now been moved to data */2340 put_page(page_info->page);2341 skb->data_len = 0;2342 skb->tail += curr_frag_len;2343 } else {2344 hdr_len = ETH_HLEN;2345 memcpy(skb->data, start, hdr_len);2346 skb_shinfo(skb)->nr_frags = 1;2347 skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[0],2348 page_info->page,2349 page_info->page_offset + hdr_len,2350 curr_frag_len - hdr_len);2351 skb->data_len = curr_frag_len - hdr_len;2352 skb->truesize += rx_frag_size;2353 skb->tail += hdr_len;2354 }2355 page_info->page = NULL;2356 2357 if (rxcp->pkt_size <= rx_frag_size) {2358 BUG_ON(rxcp->num_rcvd != 1);2359 return;2360 }2361 2362 /* More frags present for this completion */2363 remaining = rxcp->pkt_size - curr_frag_len;2364 for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {2365 page_info = get_rx_page_info(rxo);2366 curr_frag_len = min(remaining, rx_frag_size);2367 2368 /* Coalesce all frags from the same physical page in one slot */2369 if (page_info->page_offset == 0) {2370 /* Fresh page */2371 j++;2372 skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[j],2373 page_info->page,2374 page_info->page_offset,2375 curr_frag_len);2376 skb_shinfo(skb)->nr_frags++;2377 } else {2378 put_page(page_info->page);2379 skb_frag_size_add(&skb_shinfo(skb)->frags[j],2380 curr_frag_len);2381 }2382 2383 skb->len += curr_frag_len;2384 skb->data_len += curr_frag_len;2385 skb->truesize += rx_frag_size;2386 remaining -= curr_frag_len;2387 page_info->page = NULL;2388 }2389 BUG_ON(j > MAX_SKB_FRAGS);2390}2391 2392/* Process the RX completion indicated by rxcp when GRO is disabled */2393static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,2394 struct be_rx_compl_info *rxcp)2395{2396 struct be_adapter *adapter = rxo->adapter;2397 struct net_device *netdev = adapter->netdev;2398 struct sk_buff *skb;2399 2400 skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE);2401 if (unlikely(!skb)) {2402 rx_stats(rxo)->rx_drops_no_skbs++;2403 be_rx_compl_discard(rxo, rxcp);2404 return;2405 }2406 2407 skb_fill_rx_data(rxo, skb, rxcp);2408 2409 if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp)))2410 skb->ip_summed = CHECKSUM_UNNECESSARY;2411 else2412 skb_checksum_none_assert(skb);2413 2414 skb->protocol = eth_type_trans(skb, netdev);2415 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);2416 if (netdev->features & NETIF_F_RXHASH)2417 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);2418 2419 skb->csum_level = rxcp->tunneled;2420 skb_mark_napi_id(skb, napi);2421 2422 if (rxcp->vlanf)2423 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);2424 2425 netif_receive_skb(skb);2426}2427 2428/* Process the RX completion indicated by rxcp when GRO is enabled */2429static void be_rx_compl_process_gro(struct be_rx_obj *rxo,2430 struct napi_struct *napi,2431 struct be_rx_compl_info *rxcp)2432{2433 struct be_adapter *adapter = rxo->adapter;2434 struct be_rx_page_info *page_info;2435 struct sk_buff *skb = NULL;2436 u16 remaining, curr_frag_len;2437 u16 i, j;2438 2439 skb = napi_get_frags(napi);2440 if (!skb) {2441 be_rx_compl_discard(rxo, rxcp);2442 return;2443 }2444 2445 remaining = rxcp->pkt_size;2446 for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {2447 page_info = get_rx_page_info(rxo);2448 2449 curr_frag_len = min(remaining, rx_frag_size);2450 2451 /* Coalesce all frags from the same physical page in one slot */2452 if (i == 0 || page_info->page_offset == 0) {2453 /* First frag or Fresh page */2454 j++;2455 skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[j],2456 page_info->page,2457 page_info->page_offset,2458 curr_frag_len);2459 } else {2460 put_page(page_info->page);2461 skb_frag_size_add(&skb_shinfo(skb)->frags[j],2462 curr_frag_len);2463 }2464 2465 skb->truesize += rx_frag_size;2466 remaining -= curr_frag_len;2467 memset(page_info, 0, sizeof(*page_info));2468 }2469 BUG_ON(j > MAX_SKB_FRAGS);2470 2471 skb_shinfo(skb)->nr_frags = j + 1;2472 skb->len = rxcp->pkt_size;2473 skb->data_len = rxcp->pkt_size;2474 skb->ip_summed = CHECKSUM_UNNECESSARY;2475 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);2476 if (adapter->netdev->features & NETIF_F_RXHASH)2477 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);2478 2479 skb->csum_level = rxcp->tunneled;2480 2481 if (rxcp->vlanf)2482 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);2483 2484 napi_gro_frags(napi);2485}2486 2487static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,2488 struct be_rx_compl_info *rxcp)2489{2490 rxcp->pkt_size = GET_RX_COMPL_V1_BITS(pktsize, compl);2491 rxcp->vlanf = GET_RX_COMPL_V1_BITS(vtp, compl);2492 rxcp->err = GET_RX_COMPL_V1_BITS(err, compl);2493 rxcp->tcpf = GET_RX_COMPL_V1_BITS(tcpf, compl);2494 rxcp->udpf = GET_RX_COMPL_V1_BITS(udpf, compl);2495 rxcp->ip_csum = GET_RX_COMPL_V1_BITS(ipcksm, compl);2496 rxcp->l4_csum = GET_RX_COMPL_V1_BITS(l4_cksm, compl);2497 rxcp->ipv6 = GET_RX_COMPL_V1_BITS(ip_version, compl);2498 rxcp->num_rcvd = GET_RX_COMPL_V1_BITS(numfrags, compl);2499 rxcp->pkt_type = GET_RX_COMPL_V1_BITS(cast_enc, compl);2500 rxcp->rss_hash = GET_RX_COMPL_V1_BITS(rsshash, compl);2501 if (rxcp->vlanf) {2502 rxcp->qnq = GET_RX_COMPL_V1_BITS(qnq, compl);2503 rxcp->vlan_tag = GET_RX_COMPL_V1_BITS(vlan_tag, compl);2504 }2505 rxcp->port = GET_RX_COMPL_V1_BITS(port, compl);2506 rxcp->tunneled =2507 GET_RX_COMPL_V1_BITS(tunneled, compl);2508}2509 2510static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,2511 struct be_rx_compl_info *rxcp)2512{2513 rxcp->pkt_size = GET_RX_COMPL_V0_BITS(pktsize, compl);2514 rxcp->vlanf = GET_RX_COMPL_V0_BITS(vtp, compl);2515 rxcp->err = GET_RX_COMPL_V0_BITS(err, compl);2516 rxcp->tcpf = GET_RX_COMPL_V0_BITS(tcpf, compl);2517 rxcp->udpf = GET_RX_COMPL_V0_BITS(udpf, compl);2518 rxcp->ip_csum = GET_RX_COMPL_V0_BITS(ipcksm, compl);2519 rxcp->l4_csum = GET_RX_COMPL_V0_BITS(l4_cksm, compl);2520 rxcp->ipv6 = GET_RX_COMPL_V0_BITS(ip_version, compl);2521 rxcp->num_rcvd = GET_RX_COMPL_V0_BITS(numfrags, compl);2522 rxcp->pkt_type = GET_RX_COMPL_V0_BITS(cast_enc, compl);2523 rxcp->rss_hash = GET_RX_COMPL_V0_BITS(rsshash, compl);2524 if (rxcp->vlanf) {2525 rxcp->qnq = GET_RX_COMPL_V0_BITS(qnq, compl);2526 rxcp->vlan_tag = GET_RX_COMPL_V0_BITS(vlan_tag, compl);2527 }2528 rxcp->port = GET_RX_COMPL_V0_BITS(port, compl);2529 rxcp->ip_frag = GET_RX_COMPL_V0_BITS(ip_frag, compl);2530}2531 2532static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)2533{2534 struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);2535 struct be_rx_compl_info *rxcp = &rxo->rxcp;2536 struct be_adapter *adapter = rxo->adapter;2537 2538 /* For checking the valid bit it is Ok to use either definition as the2539 * valid bit is at the same position in both v0 and v1 Rx compl */2540 if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)2541 return NULL;2542 2543 rmb();2544 be_dws_le_to_cpu(compl, sizeof(*compl));2545 2546 if (adapter->be3_native)2547 be_parse_rx_compl_v1(compl, rxcp);2548 else2549 be_parse_rx_compl_v0(compl, rxcp);2550 2551 if (rxcp->ip_frag)2552 rxcp->l4_csum = 0;2553 2554 if (rxcp->vlanf) {2555 /* In QNQ modes, if qnq bit is not set, then the packet was2556 * tagged only with the transparent outer vlan-tag and must2557 * not be treated as a vlan packet by host2558 */2559 if (be_is_qnq_mode(adapter) && !rxcp->qnq)2560 rxcp->vlanf = 0;2561 2562 if (!lancer_chip(adapter))2563 rxcp->vlan_tag = swab16(rxcp->vlan_tag);2564 2565 if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) &&2566 !test_bit(rxcp->vlan_tag, adapter->vids))2567 rxcp->vlanf = 0;2568 }2569 2570 /* As the compl has been parsed, reset it; we wont touch it again */2571 compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;2572 2573 queue_tail_inc(&rxo->cq);2574 return rxcp;2575}2576 2577static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)2578{2579 u32 order = get_order(size);2580 2581 if (order > 0)2582 gfp |= __GFP_COMP;2583 return alloc_pages(gfp, order);2584}2585 2586/*2587 * Allocate a page, split it to fragments of size rx_frag_size and post as2588 * receive buffers to BE2589 */2590static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed)2591{2592 struct be_adapter *adapter = rxo->adapter;2593 struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;2594 struct be_queue_info *rxq = &rxo->q;2595 struct page *pagep = NULL;2596 struct device *dev = &adapter->pdev->dev;2597 struct be_eth_rx_d *rxd;2598 u64 page_dmaaddr = 0, frag_dmaaddr;2599 u32 posted, page_offset = 0, notify = 0;2600 2601 page_info = &rxo->page_info_tbl[rxq->head];2602 for (posted = 0; posted < frags_needed && !page_info->page; posted++) {2603 if (!pagep) {2604 pagep = be_alloc_pages(adapter->big_page_size, gfp);2605 if (unlikely(!pagep)) {2606 rx_stats(rxo)->rx_post_fail++;2607 break;2608 }2609 page_dmaaddr = dma_map_page(dev, pagep, 0,2610 adapter->big_page_size,2611 DMA_FROM_DEVICE);2612 if (dma_mapping_error(dev, page_dmaaddr)) {2613 put_page(pagep);2614 pagep = NULL;2615 adapter->drv_stats.dma_map_errors++;2616 break;2617 }2618 page_offset = 0;2619 } else {2620 get_page(pagep);2621 page_offset += rx_frag_size;2622 }2623 page_info->page_offset = page_offset;2624 page_info->page = pagep;2625 2626 rxd = queue_head_node(rxq);2627 frag_dmaaddr = page_dmaaddr + page_info->page_offset;2628 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);2629 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));2630 2631 /* Any space left in the current big page for another frag? */2632 if ((page_offset + rx_frag_size + rx_frag_size) >2633 adapter->big_page_size) {2634 pagep = NULL;2635 page_info->last_frag = true;2636 dma_unmap_addr_set(page_info, bus, page_dmaaddr);2637 } else {2638 dma_unmap_addr_set(page_info, bus, frag_dmaaddr);2639 }2640 2641 prev_page_info = page_info;2642 queue_head_inc(rxq);2643 page_info = &rxo->page_info_tbl[rxq->head];2644 }2645 2646 /* Mark the last frag of a page when we break out of the above loop2647 * with no more slots available in the RXQ2648 */2649 if (pagep) {2650 prev_page_info->last_frag = true;2651 dma_unmap_addr_set(prev_page_info, bus, page_dmaaddr);2652 }2653 2654 if (posted) {2655 atomic_add(posted, &rxq->used);2656 if (rxo->rx_post_starved)2657 rxo->rx_post_starved = false;2658 do {2659 notify = min(MAX_NUM_POST_ERX_DB, posted);2660 be_rxq_notify(adapter, rxq->id, notify);2661 posted -= notify;2662 } while (posted);2663 } else if (atomic_read(&rxq->used) == 0) {2664 /* Let be_worker replenish when memory is available */2665 rxo->rx_post_starved = true;2666 }2667}2668 2669static inline void be_update_tx_err(struct be_tx_obj *txo, u8 status)2670{2671 switch (status) {2672 case BE_TX_COMP_HDR_PARSE_ERR:2673 tx_stats(txo)->tx_hdr_parse_err++;2674 break;2675 case BE_TX_COMP_NDMA_ERR:2676 tx_stats(txo)->tx_dma_err++;2677 break;2678 case BE_TX_COMP_ACL_ERR:2679 tx_stats(txo)->tx_spoof_check_err++;2680 break;2681 }2682}2683 2684static inline void lancer_update_tx_err(struct be_tx_obj *txo, u8 status)2685{2686 switch (status) {2687 case LANCER_TX_COMP_LSO_ERR:2688 tx_stats(txo)->tx_tso_err++;2689 break;2690 case LANCER_TX_COMP_HSW_DROP_MAC_ERR:2691 case LANCER_TX_COMP_HSW_DROP_VLAN_ERR:2692 tx_stats(txo)->tx_spoof_check_err++;2693 break;2694 case LANCER_TX_COMP_QINQ_ERR:2695 tx_stats(txo)->tx_qinq_err++;2696 break;2697 case LANCER_TX_COMP_PARITY_ERR:2698 tx_stats(txo)->tx_internal_parity_err++;2699 break;2700 case LANCER_TX_COMP_DMA_ERR:2701 tx_stats(txo)->tx_dma_err++;2702 break;2703 case LANCER_TX_COMP_SGE_ERR:2704 tx_stats(txo)->tx_sge_err++;2705 break;2706 }2707}2708 2709static struct be_tx_compl_info *be_tx_compl_get(struct be_adapter *adapter,2710 struct be_tx_obj *txo)2711{2712 struct be_queue_info *tx_cq = &txo->cq;2713 struct be_tx_compl_info *txcp = &txo->txcp;2714 struct be_eth_tx_compl *compl = queue_tail_node(tx_cq);2715 2716 if (compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)2717 return NULL;2718 2719 /* Ensure load ordering of valid bit dword and other dwords below */2720 rmb();2721 be_dws_le_to_cpu(compl, sizeof(*compl));2722 2723 txcp->status = GET_TX_COMPL_BITS(status, compl);2724 txcp->end_index = GET_TX_COMPL_BITS(wrb_index, compl);2725 2726 if (txcp->status) {2727 if (lancer_chip(adapter)) {2728 lancer_update_tx_err(txo, txcp->status);2729 /* Reset the adapter incase of TSO,2730 * SGE or Parity error2731 */2732 if (txcp->status == LANCER_TX_COMP_LSO_ERR ||2733 txcp->status == LANCER_TX_COMP_PARITY_ERR ||2734 txcp->status == LANCER_TX_COMP_SGE_ERR)2735 be_set_error(adapter, BE_ERROR_TX);2736 } else {2737 be_update_tx_err(txo, txcp->status);2738 }2739 }2740 2741 if (be_check_error(adapter, BE_ERROR_TX))2742 return NULL;2743 2744 compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;2745 queue_tail_inc(tx_cq);2746 return txcp;2747}2748 2749static u16 be_tx_compl_process(struct be_adapter *adapter,2750 struct be_tx_obj *txo, u16 last_index)2751{2752 struct sk_buff **sent_skbs = txo->sent_skb_list;2753 struct be_queue_info *txq = &txo->q;2754 struct sk_buff *skb = NULL;2755 bool unmap_skb_hdr = false;2756 struct be_eth_wrb *wrb;2757 u16 num_wrbs = 0;2758 u32 frag_index;2759 2760 do {2761 if (sent_skbs[txq->tail]) {2762 /* Free skb from prev req */2763 if (skb)2764 dev_consume_skb_any(skb);2765 skb = sent_skbs[txq->tail];2766 sent_skbs[txq->tail] = NULL;2767 queue_tail_inc(txq); /* skip hdr wrb */2768 num_wrbs++;2769 unmap_skb_hdr = true;2770 }2771 wrb = queue_tail_node(txq);2772 frag_index = txq->tail;2773 unmap_tx_frag(&adapter->pdev->dev, wrb,2774 (unmap_skb_hdr && skb_headlen(skb)));2775 unmap_skb_hdr = false;2776 queue_tail_inc(txq);2777 num_wrbs++;2778 } while (frag_index != last_index);2779 dev_consume_skb_any(skb);2780 2781 return num_wrbs;2782}2783 2784/* Return the number of events in the event queue */2785static inline int events_get(struct be_eq_obj *eqo)2786{2787 struct be_eq_entry *eqe;2788 int num = 0;2789 2790 do {2791 eqe = queue_tail_node(&eqo->q);2792 if (eqe->evt == 0)2793 break;2794 2795 rmb();2796 eqe->evt = 0;2797 num++;2798 queue_tail_inc(&eqo->q);2799 } while (true);2800 2801 return num;2802}2803 2804/* Leaves the EQ is disarmed state */2805static void be_eq_clean(struct be_eq_obj *eqo)2806{2807 int num = events_get(eqo);2808 2809 be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0);2810}2811 2812/* Free posted rx buffers that were not used */2813static void be_rxq_clean(struct be_rx_obj *rxo)2814{2815 struct be_queue_info *rxq = &rxo->q;2816 struct be_rx_page_info *page_info;2817 2818 while (atomic_read(&rxq->used) > 0) {2819 page_info = get_rx_page_info(rxo);2820 put_page(page_info->page);2821 memset(page_info, 0, sizeof(*page_info));2822 }2823 BUG_ON(atomic_read(&rxq->used));2824 rxq->tail = 0;2825 rxq->head = 0;2826}2827 2828static void be_rx_cq_clean(struct be_rx_obj *rxo)2829{2830 struct be_queue_info *rx_cq = &rxo->cq;2831 struct be_rx_compl_info *rxcp;2832 struct be_adapter *adapter = rxo->adapter;2833 int flush_wait = 0;2834 2835 /* Consume pending rx completions.2836 * Wait for the flush completion (identified by zero num_rcvd)2837 * to arrive. Notify CQ even when there are no more CQ entries2838 * for HW to flush partially coalesced CQ entries.2839 * In Lancer, there is no need to wait for flush compl.2840 */2841 for (;;) {2842 rxcp = be_rx_compl_get(rxo);2843 if (!rxcp) {2844 if (lancer_chip(adapter))2845 break;2846 2847 if (flush_wait++ > 50 ||2848 be_check_error(adapter,2849 BE_ERROR_HW)) {2850 dev_warn(&adapter->pdev->dev,2851 "did not receive flush compl\n");2852 break;2853 }2854 be_cq_notify(adapter, rx_cq->id, true, 0);2855 mdelay(1);2856 } else {2857 be_rx_compl_discard(rxo, rxcp);2858 be_cq_notify(adapter, rx_cq->id, false, 1);2859 if (rxcp->num_rcvd == 0)2860 break;2861 }2862 }2863 2864 /* After cleanup, leave the CQ in unarmed state */2865 be_cq_notify(adapter, rx_cq->id, false, 0);2866}2867 2868static void be_tx_compl_clean(struct be_adapter *adapter)2869{2870 struct device *dev = &adapter->pdev->dev;2871 u16 cmpl = 0, timeo = 0, num_wrbs = 0;2872 struct be_tx_compl_info *txcp;2873 struct be_queue_info *txq;2874 u32 end_idx, notified_idx;2875 struct be_tx_obj *txo;2876 int i, pending_txqs;2877 2878 /* Stop polling for compls when HW has been silent for 10ms */2879 do {2880 pending_txqs = adapter->num_tx_qs;2881 2882 for_all_tx_queues(adapter, txo, i) {2883 cmpl = 0;2884 num_wrbs = 0;2885 txq = &txo->q;2886 while ((txcp = be_tx_compl_get(adapter, txo))) {2887 num_wrbs +=2888 be_tx_compl_process(adapter, txo,2889 txcp->end_index);2890 cmpl++;2891 }2892 if (cmpl) {2893 be_cq_notify(adapter, txo->cq.id, false, cmpl);2894 atomic_sub(num_wrbs, &txq->used);2895 timeo = 0;2896 }2897 if (!be_is_tx_compl_pending(txo))2898 pending_txqs--;2899 }2900 2901 if (pending_txqs == 0 || ++timeo > 10 ||2902 be_check_error(adapter, BE_ERROR_HW))2903 break;2904 2905 mdelay(1);2906 } while (true);2907 2908 /* Free enqueued TX that was never notified to HW */2909 for_all_tx_queues(adapter, txo, i) {2910 txq = &txo->q;2911 2912 if (atomic_read(&txq->used)) {2913 dev_info(dev, "txq%d: cleaning %d pending tx-wrbs\n",2914 i, atomic_read(&txq->used));2915 notified_idx = txq->tail;2916 end_idx = txq->tail;2917 index_adv(&end_idx, atomic_read(&txq->used) - 1,2918 txq->len);2919 /* Use the tx-compl process logic to handle requests2920 * that were not sent to the HW.2921 */2922 num_wrbs = be_tx_compl_process(adapter, txo, end_idx);2923 atomic_sub(num_wrbs, &txq->used);2924 BUG_ON(atomic_read(&txq->used));2925 txo->pend_wrb_cnt = 0;2926 /* Since hw was never notified of these requests,2927 * reset TXQ indices2928 */2929 txq->head = notified_idx;2930 txq->tail = notified_idx;2931 }2932 }2933}2934 2935static void be_evt_queues_destroy(struct be_adapter *adapter)2936{2937 struct be_eq_obj *eqo;2938 int i;2939 2940 for_all_evt_queues(adapter, eqo, i) {2941 if (eqo->q.created) {2942 be_eq_clean(eqo);2943 be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);2944 netif_napi_del(&eqo->napi);2945 free_cpumask_var(eqo->affinity_mask);2946 }2947 be_queue_free(adapter, &eqo->q);2948 }2949}2950 2951static int be_evt_queues_create(struct be_adapter *adapter)2952{2953 struct be_queue_info *eq;2954 struct be_eq_obj *eqo;2955 struct be_aic_obj *aic;2956 int i, rc;2957 2958 /* need enough EQs to service both RX and TX queues */2959 adapter->num_evt_qs = min_t(u16, num_irqs(adapter),2960 max(adapter->cfg_num_rx_irqs,2961 adapter->cfg_num_tx_irqs));2962 2963 adapter->aic_enabled = true;2964 2965 for_all_evt_queues(adapter, eqo, i) {2966 int numa_node = dev_to_node(&adapter->pdev->dev);2967 2968 aic = &adapter->aic_obj[i];2969 eqo->adapter = adapter;2970 eqo->idx = i;2971 aic->max_eqd = BE_MAX_EQD;2972 2973 eq = &eqo->q;2974 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,2975 sizeof(struct be_eq_entry));2976 if (rc)2977 return rc;2978 2979 rc = be_cmd_eq_create(adapter, eqo);2980 if (rc)2981 return rc;2982 2983 if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))2984 return -ENOMEM;2985 cpumask_set_cpu(cpumask_local_spread(i, numa_node),2986 eqo->affinity_mask);2987 netif_napi_add(adapter->netdev, &eqo->napi, be_poll);2988 }2989 return 0;2990}2991 2992static void be_mcc_queues_destroy(struct be_adapter *adapter)2993{2994 struct be_queue_info *q;2995 2996 q = &adapter->mcc_obj.q;2997 if (q->created)2998 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);2999 be_queue_free(adapter, q);3000 3001 q = &adapter->mcc_obj.cq;3002 if (q->created)3003 be_cmd_q_destroy(adapter, q, QTYPE_CQ);3004 be_queue_free(adapter, q);3005}3006 3007/* Must be called only after TX qs are created as MCC shares TX EQ */3008static int be_mcc_queues_create(struct be_adapter *adapter)3009{3010 struct be_queue_info *q, *cq;3011 3012 cq = &adapter->mcc_obj.cq;3013 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,3014 sizeof(struct be_mcc_compl)))3015 goto err;3016 3017 /* Use the default EQ for MCC completions */3018 if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0))3019 goto mcc_cq_free;3020 3021 q = &adapter->mcc_obj.q;3022 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))3023 goto mcc_cq_destroy;3024 3025 if (be_cmd_mccq_create(adapter, q, cq))3026 goto mcc_q_free;3027 3028 return 0;3029 3030mcc_q_free:3031 be_queue_free(adapter, q);3032mcc_cq_destroy:3033 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);3034mcc_cq_free:3035 be_queue_free(adapter, cq);3036err:3037 return -1;3038}3039 3040static void be_tx_queues_destroy(struct be_adapter *adapter)3041{3042 struct be_queue_info *q;3043 struct be_tx_obj *txo;3044 u8 i;3045 3046 for_all_tx_queues(adapter, txo, i) {3047 q = &txo->q;3048 if (q->created)3049 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);3050 be_queue_free(adapter, q);3051 3052 q = &txo->cq;3053 if (q->created)3054 be_cmd_q_destroy(adapter, q, QTYPE_CQ);3055 be_queue_free(adapter, q);3056 }3057}3058 3059static int be_tx_qs_create(struct be_adapter *adapter)3060{3061 struct be_queue_info *cq;3062 struct be_tx_obj *txo;3063 struct be_eq_obj *eqo;3064 int status, i;3065 3066 adapter->num_tx_qs = min(adapter->num_evt_qs, adapter->cfg_num_tx_irqs);3067 3068 for_all_tx_queues(adapter, txo, i) {3069 cq = &txo->cq;3070 status = be_queue_alloc(adapter, cq, TX_CQ_LEN,3071 sizeof(struct be_eth_tx_compl));3072 if (status)3073 return status;3074 3075 u64_stats_init(&txo->stats.sync);3076 u64_stats_init(&txo->stats.sync_compl);3077 3078 /* If num_evt_qs is less than num_tx_qs, then more than3079 * one txq share an eq3080 */3081 eqo = &adapter->eq_obj[i % adapter->num_evt_qs];3082 status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3);3083 if (status)3084 return status;3085 3086 status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN,3087 sizeof(struct be_eth_wrb));3088 if (status)3089 return status;3090 3091 status = be_cmd_txq_create(adapter, txo);3092 if (status)3093 return status;3094 3095 netif_set_xps_queue(adapter->netdev, eqo->affinity_mask,3096 eqo->idx);3097 }3098 3099 dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",3100 adapter->num_tx_qs);3101 return 0;3102}3103 3104static void be_rx_cqs_destroy(struct be_adapter *adapter)3105{3106 struct be_queue_info *q;3107 struct be_rx_obj *rxo;3108 int i;3109 3110 for_all_rx_queues(adapter, rxo, i) {3111 q = &rxo->cq;3112 if (q->created)3113 be_cmd_q_destroy(adapter, q, QTYPE_CQ);3114 be_queue_free(adapter, q);3115 }3116}3117 3118static int be_rx_cqs_create(struct be_adapter *adapter)3119{3120 struct be_queue_info *eq, *cq;3121 struct be_rx_obj *rxo;3122 int rc, i;3123 3124 adapter->num_rss_qs =3125 min(adapter->num_evt_qs, adapter->cfg_num_rx_irqs);3126 3127 /* We'll use RSS only if atleast 2 RSS rings are supported. */3128 if (adapter->num_rss_qs < 2)3129 adapter->num_rss_qs = 0;3130 3131 adapter->num_rx_qs = adapter->num_rss_qs + adapter->need_def_rxq;3132 3133 /* When the interface is not capable of RSS rings (and there is no3134 * need to create a default RXQ) we'll still need one RXQ3135 */3136 if (adapter->num_rx_qs == 0)3137 adapter->num_rx_qs = 1;3138 3139 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;3140 for_all_rx_queues(adapter, rxo, i) {3141 rxo->adapter = adapter;3142 cq = &rxo->cq;3143 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,3144 sizeof(struct be_eth_rx_compl));3145 if (rc)3146 return rc;3147 3148 u64_stats_init(&rxo->stats.sync);3149 eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;3150 rc = be_cmd_cq_create(adapter, cq, eq, false, 3);3151 if (rc)3152 return rc;3153 }3154 3155 dev_info(&adapter->pdev->dev,3156 "created %d RX queue(s)\n", adapter->num_rx_qs);3157 return 0;3158}3159 3160static irqreturn_t be_intx(int irq, void *dev)3161{3162 struct be_eq_obj *eqo = dev;3163 struct be_adapter *adapter = eqo->adapter;3164 int num_evts = 0;3165 3166 /* IRQ is not expected when NAPI is scheduled as the EQ3167 * will not be armed.3168 * But, this can happen on Lancer INTx where it takes3169 * a while to de-assert INTx or in BE2 where occasionaly3170 * an interrupt may be raised even when EQ is unarmed.3171 * If NAPI is already scheduled, then counting & notifying3172 * events will orphan them.3173 */3174 if (napi_schedule_prep(&eqo->napi)) {3175 num_evts = events_get(eqo);3176 __napi_schedule(&eqo->napi);3177 if (num_evts)3178 eqo->spurious_intr = 0;3179 }3180 be_eq_notify(adapter, eqo->q.id, false, true, num_evts, 0);3181 3182 /* Return IRQ_HANDLED only for the first spurious intr3183 * after a valid intr to stop the kernel from branding3184 * this irq as a bad one!3185 */3186 if (num_evts || eqo->spurious_intr++ == 0)3187 return IRQ_HANDLED;3188 else3189 return IRQ_NONE;3190}3191 3192static irqreturn_t be_msix(int irq, void *dev)3193{3194 struct be_eq_obj *eqo = dev;3195 3196 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);3197 napi_schedule(&eqo->napi);3198 return IRQ_HANDLED;3199}3200 3201static inline bool do_gro(struct be_rx_compl_info *rxcp)3202{3203 return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;3204}3205 3206static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,3207 int budget)3208{3209 struct be_adapter *adapter = rxo->adapter;3210 struct be_queue_info *rx_cq = &rxo->cq;3211 struct be_rx_compl_info *rxcp;3212 u32 work_done;3213 u32 frags_consumed = 0;3214 3215 for (work_done = 0; work_done < budget; work_done++) {3216 rxcp = be_rx_compl_get(rxo);3217 if (!rxcp)3218 break;3219 3220 /* Is it a flush compl that has no data */3221 if (unlikely(rxcp->num_rcvd == 0))3222 goto loop_continue;3223 3224 /* Discard compl with partial DMA Lancer B0 */3225 if (unlikely(!rxcp->pkt_size)) {3226 be_rx_compl_discard(rxo, rxcp);3227 goto loop_continue;3228 }3229 3230 /* On BE drop pkts that arrive due to imperfect filtering in3231 * promiscuous mode on some skews3232 */3233 if (unlikely(rxcp->port != adapter->port_num &&3234 !lancer_chip(adapter))) {3235 be_rx_compl_discard(rxo, rxcp);3236 goto loop_continue;3237 }3238 3239 if (do_gro(rxcp))3240 be_rx_compl_process_gro(rxo, napi, rxcp);3241 else3242 be_rx_compl_process(rxo, napi, rxcp);3243 3244loop_continue:3245 frags_consumed += rxcp->num_rcvd;3246 be_rx_stats_update(rxo, rxcp);3247 }3248 3249 if (work_done) {3250 be_cq_notify(adapter, rx_cq->id, true, work_done);3251 3252 /* When an rx-obj gets into post_starved state, just3253 * let be_worker do the posting.3254 */3255 if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM &&3256 !rxo->rx_post_starved)3257 be_post_rx_frags(rxo, GFP_ATOMIC,3258 max_t(u32, MAX_RX_POST,3259 frags_consumed));3260 }3261 3262 return work_done;3263}3264 3265 3266static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo,3267 int idx)3268{3269 int num_wrbs = 0, work_done = 0;3270 struct be_tx_compl_info *txcp;3271 3272 while ((txcp = be_tx_compl_get(adapter, txo))) {3273 num_wrbs += be_tx_compl_process(adapter, txo, txcp->end_index);3274 work_done++;3275 }3276 3277 if (work_done) {3278 be_cq_notify(adapter, txo->cq.id, true, work_done);3279 atomic_sub(num_wrbs, &txo->q.used);3280 3281 /* As Tx wrbs have been freed up, wake up netdev queue3282 * if it was stopped due to lack of tx wrbs. */3283 if (__netif_subqueue_stopped(adapter->netdev, idx) &&3284 be_can_txq_wake(txo)) {3285 netif_wake_subqueue(adapter->netdev, idx);3286 }3287 3288 u64_stats_update_begin(&tx_stats(txo)->sync_compl);3289 tx_stats(txo)->tx_compl += work_done;3290 u64_stats_update_end(&tx_stats(txo)->sync_compl);3291 }3292}3293 3294int be_poll(struct napi_struct *napi, int budget)3295{3296 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);3297 struct be_adapter *adapter = eqo->adapter;3298 int max_work = 0, work, i, num_evts;3299 struct be_rx_obj *rxo;3300 struct be_tx_obj *txo;3301 u32 mult_enc = 0;3302 3303 num_evts = events_get(eqo);3304 3305 for_all_tx_queues_on_eq(adapter, eqo, txo, i)3306 be_process_tx(adapter, txo, i);3307 3308 /* This loop will iterate twice for EQ0 in which3309 * completions of the last RXQ (default one) are also processed3310 * For other EQs the loop iterates only once3311 */3312 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {3313 work = be_process_rx(rxo, napi, budget);3314 max_work = max(work, max_work);3315 }3316 3317 if (is_mcc_eqo(eqo))3318 be_process_mcc(adapter);3319 3320 if (max_work < budget) {3321 napi_complete_done(napi, max_work);3322 3323 /* Skyhawk EQ_DB has a provision to set the rearm to interrupt3324 * delay via a delay multiplier encoding value3325 */3326 if (skyhawk_chip(adapter))3327 mult_enc = be_get_eq_delay_mult_enc(eqo);3328 3329 be_eq_notify(adapter, eqo->q.id, true, false, num_evts,3330 mult_enc);3331 } else {3332 /* As we'll continue in polling mode, count and clear events */3333 be_eq_notify(adapter, eqo->q.id, false, false, num_evts, 0);3334 }3335 return max_work;3336}3337 3338void be_detect_error(struct be_adapter *adapter)3339{3340 u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0;3341 u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0;3342 struct device *dev = &adapter->pdev->dev;3343 u16 val;3344 u32 i;3345 3346 if (be_check_error(adapter, BE_ERROR_HW))3347 return;3348 3349 if (lancer_chip(adapter)) {3350 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);3351 if (sliport_status & SLIPORT_STATUS_ERR_MASK) {3352 be_set_error(adapter, BE_ERROR_UE);3353 sliport_err1 = ioread32(adapter->db +3354 SLIPORT_ERROR1_OFFSET);3355 sliport_err2 = ioread32(adapter->db +3356 SLIPORT_ERROR2_OFFSET);3357 /* Do not log error messages if its a FW reset */3358 if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&3359 sliport_err2 == SLIPORT_ERROR_FW_RESET2) {3360 dev_info(dev, "Reset is in progress\n");3361 } else {3362 dev_err(dev, "Error detected in the card\n");3363 dev_err(dev, "ERR: sliport status 0x%x\n",3364 sliport_status);3365 dev_err(dev, "ERR: sliport error1 0x%x\n",3366 sliport_err1);3367 dev_err(dev, "ERR: sliport error2 0x%x\n",3368 sliport_err2);3369 }3370 }3371 } else {3372 ue_lo = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_LOW);3373 ue_hi = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_HIGH);3374 ue_lo_mask = ioread32(adapter->pcicfg +3375 PCICFG_UE_STATUS_LOW_MASK);3376 ue_hi_mask = ioread32(adapter->pcicfg +3377 PCICFG_UE_STATUS_HI_MASK);3378 3379 ue_lo = (ue_lo & ~ue_lo_mask);3380 ue_hi = (ue_hi & ~ue_hi_mask);3381 3382 if (ue_lo || ue_hi) {3383 /* On certain platforms BE3 hardware can indicate3384 * spurious UEs. In case of a UE in the chip,3385 * the POST register correctly reports either a3386 * FAT_LOG_START state (FW is currently dumping3387 * FAT log data) or a ARMFW_UE state. Check for the3388 * above states to ascertain if the UE is valid or not.3389 */3390 if (BE3_chip(adapter)) {3391 val = be_POST_stage_get(adapter);3392 if ((val & POST_STAGE_FAT_LOG_START)3393 != POST_STAGE_FAT_LOG_START &&3394 (val & POST_STAGE_ARMFW_UE)3395 != POST_STAGE_ARMFW_UE &&3396 (val & POST_STAGE_RECOVERABLE_ERR)3397 != POST_STAGE_RECOVERABLE_ERR)3398 return;3399 }3400 3401 dev_err(dev, "Error detected in the adapter");3402 be_set_error(adapter, BE_ERROR_UE);3403 3404 for (i = 0; ue_lo; ue_lo >>= 1, i++) {3405 if (ue_lo & 1)3406 dev_err(dev, "UE: %s bit set\n",3407 ue_status_low_desc[i]);3408 }3409 for (i = 0; ue_hi; ue_hi >>= 1, i++) {3410 if (ue_hi & 1)3411 dev_err(dev, "UE: %s bit set\n",3412 ue_status_hi_desc[i]);3413 }3414 }3415 }3416}3417 3418static void be_msix_disable(struct be_adapter *adapter)3419{3420 if (msix_enabled(adapter)) {3421 pci_disable_msix(adapter->pdev);3422 adapter->num_msix_vec = 0;3423 adapter->num_msix_roce_vec = 0;3424 }3425}3426 3427static int be_msix_enable(struct be_adapter *adapter)3428{3429 unsigned int i, max_roce_eqs;3430 struct device *dev = &adapter->pdev->dev;3431 int num_vec;3432 3433 /* If RoCE is supported, program the max number of vectors that3434 * could be used for NIC and RoCE, else, just program the number3435 * we'll use initially.3436 */3437 if (be_roce_supported(adapter)) {3438 max_roce_eqs =3439 be_max_func_eqs(adapter) - be_max_nic_eqs(adapter);3440 max_roce_eqs = min(max_roce_eqs, num_online_cpus());3441 num_vec = be_max_any_irqs(adapter) + max_roce_eqs;3442 } else {3443 num_vec = max(adapter->cfg_num_rx_irqs,3444 adapter->cfg_num_tx_irqs);3445 }3446 3447 for (i = 0; i < num_vec; i++)3448 adapter->msix_entries[i].entry = i;3449 3450 num_vec = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,3451 MIN_MSIX_VECTORS, num_vec);3452 if (num_vec < 0)3453 goto fail;3454 3455 if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) {3456 adapter->num_msix_roce_vec = num_vec / 2;3457 dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n",3458 adapter->num_msix_roce_vec);3459 }3460 3461 adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec;3462 3463 dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n",3464 adapter->num_msix_vec);3465 return 0;3466 3467fail:3468 dev_warn(dev, "MSIx enable failed\n");3469 3470 /* INTx is not supported in VFs, so fail probe if enable_msix fails */3471 if (be_virtfn(adapter))3472 return num_vec;3473 return 0;3474}3475 3476static inline int be_msix_vec_get(struct be_adapter *adapter,3477 struct be_eq_obj *eqo)3478{3479 return adapter->msix_entries[eqo->msix_idx].vector;3480}3481 3482static int be_msix_register(struct be_adapter *adapter)3483{3484 struct net_device *netdev = adapter->netdev;3485 struct be_eq_obj *eqo;3486 int status, i, vec;3487 3488 for_all_evt_queues(adapter, eqo, i) {3489 sprintf(eqo->desc, "%s-q%d", netdev->name, i);3490 vec = be_msix_vec_get(adapter, eqo);3491 status = request_irq(vec, be_msix, 0, eqo->desc, eqo);3492 if (status)3493 goto err_msix;3494 3495 irq_update_affinity_hint(vec, eqo->affinity_mask);3496 }3497 3498 return 0;3499err_msix:3500 for (i--; i >= 0; i--) {3501 eqo = &adapter->eq_obj[i];3502 free_irq(be_msix_vec_get(adapter, eqo), eqo);3503 }3504 dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n",3505 status);3506 be_msix_disable(adapter);3507 return status;3508}3509 3510static int be_irq_register(struct be_adapter *adapter)3511{3512 struct net_device *netdev = adapter->netdev;3513 int status;3514 3515 if (msix_enabled(adapter)) {3516 status = be_msix_register(adapter);3517 if (status == 0)3518 goto done;3519 /* INTx is not supported for VF */3520 if (be_virtfn(adapter))3521 return status;3522 }3523 3524 /* INTx: only the first EQ is used */3525 netdev->irq = adapter->pdev->irq;3526 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,3527 &adapter->eq_obj[0]);3528 if (status) {3529 dev_err(&adapter->pdev->dev,3530 "INTx request IRQ failed - err %d\n", status);3531 return status;3532 }3533done:3534 adapter->isr_registered = true;3535 return 0;3536}3537 3538static void be_irq_unregister(struct be_adapter *adapter)3539{3540 struct net_device *netdev = adapter->netdev;3541 struct be_eq_obj *eqo;3542 int i, vec;3543 3544 if (!adapter->isr_registered)3545 return;3546 3547 /* INTx */3548 if (!msix_enabled(adapter)) {3549 free_irq(netdev->irq, &adapter->eq_obj[0]);3550 goto done;3551 }3552 3553 /* MSIx */3554 for_all_evt_queues(adapter, eqo, i) {3555 vec = be_msix_vec_get(adapter, eqo);3556 irq_update_affinity_hint(vec, NULL);3557 free_irq(vec, eqo);3558 }3559 3560done:3561 adapter->isr_registered = false;3562}3563 3564static void be_rx_qs_destroy(struct be_adapter *adapter)3565{3566 struct rss_info *rss = &adapter->rss_info;3567 struct be_queue_info *q;3568 struct be_rx_obj *rxo;3569 int i;3570 3571 for_all_rx_queues(adapter, rxo, i) {3572 q = &rxo->q;3573 if (q->created) {3574 /* If RXQs are destroyed while in an "out of buffer"3575 * state, there is a possibility of an HW stall on3576 * Lancer. So, post 64 buffers to each queue to relieve3577 * the "out of buffer" condition.3578 * Make sure there's space in the RXQ before posting.3579 */3580 if (lancer_chip(adapter)) {3581 be_rx_cq_clean(rxo);3582 if (atomic_read(&q->used) == 0)3583 be_post_rx_frags(rxo, GFP_KERNEL,3584 MAX_RX_POST);3585 }3586 3587 be_cmd_rxq_destroy(adapter, q);3588 be_rx_cq_clean(rxo);3589 be_rxq_clean(rxo);3590 }3591 be_queue_free(adapter, q);3592 }3593 3594 if (rss->rss_flags) {3595 rss->rss_flags = RSS_ENABLE_NONE;3596 be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,3597 128, rss->rss_hkey);3598 }3599}3600 3601static void be_disable_if_filters(struct be_adapter *adapter)3602{3603 /* Don't delete MAC on BE3 VFs without FILTMGMT privilege */3604 if (!BEx_chip(adapter) || !be_virtfn(adapter) ||3605 check_privilege(adapter, BE_PRIV_FILTMGMT)) {3606 be_dev_mac_del(adapter, adapter->pmac_id[0]);3607 eth_zero_addr(adapter->dev_mac);3608 }3609 3610 be_clear_uc_list(adapter);3611 be_clear_mc_list(adapter);3612 3613 /* The IFACE flags are enabled in the open path and cleared3614 * in the close path. When a VF gets detached from the host and3615 * assigned to a VM the following happens:3616 * - VF's IFACE flags get cleared in the detach path3617 * - IFACE create is issued by the VF in the attach path3618 * Due to a bug in the BE3/Skyhawk-R FW3619 * (Lancer FW doesn't have the bug), the IFACE capability flags3620 * specified along with the IFACE create cmd issued by a VF are not3621 * honoured by FW. As a consequence, if a *new* driver3622 * (that enables/disables IFACE flags in open/close)3623 * is loaded in the host and an *old* driver is * used by a VM/VF,3624 * the IFACE gets created *without* the needed flags.3625 * To avoid this, disable RX-filter flags only for Lancer.3626 */3627 if (lancer_chip(adapter)) {3628 be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF);3629 adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS;3630 }3631}3632 3633static int be_close(struct net_device *netdev)3634{3635 struct be_adapter *adapter = netdev_priv(netdev);3636 struct be_eq_obj *eqo;3637 int i;3638 3639 /* This protection is needed as be_close() may be called even when the3640 * adapter is in cleared state (after eeh perm failure)3641 */3642 if (!(adapter->flags & BE_FLAGS_SETUP_DONE))3643 return 0;3644 3645 /* Before attempting cleanup ensure all the pending cmds in the3646 * config_wq have finished execution3647 */3648 flush_workqueue(be_wq);3649 3650 be_disable_if_filters(adapter);3651 3652 if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {3653 for_all_evt_queues(adapter, eqo, i) {3654 napi_disable(&eqo->napi);3655 }3656 adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;3657 }3658 3659 be_async_mcc_disable(adapter);3660 3661 /* Wait for all pending tx completions to arrive so that3662 * all tx skbs are freed.3663 */3664 netif_tx_disable(netdev);3665 be_tx_compl_clean(adapter);3666 3667 be_rx_qs_destroy(adapter);3668 3669 for_all_evt_queues(adapter, eqo, i) {3670 if (msix_enabled(adapter))3671 synchronize_irq(be_msix_vec_get(adapter, eqo));3672 else3673 synchronize_irq(netdev->irq);3674 be_eq_clean(eqo);3675 }3676 3677 be_irq_unregister(adapter);3678 3679 return 0;3680}3681 3682static int be_rx_qs_create(struct be_adapter *adapter)3683{3684 struct rss_info *rss = &adapter->rss_info;3685 u8 rss_key[RSS_HASH_KEY_LEN];3686 struct be_rx_obj *rxo;3687 int rc, i, j;3688 3689 for_all_rx_queues(adapter, rxo, i) {3690 rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,3691 sizeof(struct be_eth_rx_d));3692 if (rc)3693 return rc;3694 }3695 3696 if (adapter->need_def_rxq || !adapter->num_rss_qs) {3697 rxo = default_rxo(adapter);3698 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,3699 rx_frag_size, adapter->if_handle,3700 false, &rxo->rss_id);3701 if (rc)3702 return rc;3703 }3704 3705 for_all_rss_queues(adapter, rxo, i) {3706 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,3707 rx_frag_size, adapter->if_handle,3708 true, &rxo->rss_id);3709 if (rc)3710 return rc;3711 }3712 3713 if (be_multi_rxq(adapter)) {3714 for (j = 0; j < RSS_INDIR_TABLE_LEN; j += adapter->num_rss_qs) {3715 for_all_rss_queues(adapter, rxo, i) {3716 if ((j + i) >= RSS_INDIR_TABLE_LEN)3717 break;3718 rss->rsstable[j + i] = rxo->rss_id;3719 rss->rss_queue[j + i] = i;3720 }3721 }3722 rss->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 |3723 RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6;3724 3725 if (!BEx_chip(adapter))3726 rss->rss_flags |= RSS_ENABLE_UDP_IPV4 |3727 RSS_ENABLE_UDP_IPV6;3728 3729 netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN);3730 rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,3731 RSS_INDIR_TABLE_LEN, rss_key);3732 if (rc) {3733 rss->rss_flags = RSS_ENABLE_NONE;3734 return rc;3735 }3736 3737 memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN);3738 } else {3739 /* Disable RSS, if only default RX Q is created */3740 rss->rss_flags = RSS_ENABLE_NONE;3741 }3742 3743 3744 /* Post 1 less than RXQ-len to avoid head being equal to tail,3745 * which is a queue empty condition3746 */3747 for_all_rx_queues(adapter, rxo, i)3748 be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1);3749 3750 return 0;3751}3752 3753static int be_enable_if_filters(struct be_adapter *adapter)3754{3755 int status;3756 3757 status = be_cmd_rx_filter(adapter, BE_IF_FILT_FLAGS_BASIC, ON);3758 if (status)3759 return status;3760 3761 /* Normally this condition usually true as the ->dev_mac is zeroed.3762 * But on BE3 VFs the initial MAC is pre-programmed by PF and3763 * subsequent be_dev_mac_add() can fail (after fresh boot)3764 */3765 if (!ether_addr_equal(adapter->dev_mac, adapter->netdev->dev_addr)) {3766 int old_pmac_id = -1;3767 3768 /* Remember old programmed MAC if any - can happen on BE3 VF */3769 if (!is_zero_ether_addr(adapter->dev_mac))3770 old_pmac_id = adapter->pmac_id[0];3771 3772 status = be_dev_mac_add(adapter, adapter->netdev->dev_addr);3773 if (status)3774 return status;3775 3776 /* Delete the old programmed MAC as we successfully programmed3777 * a new MAC3778 */3779 if (old_pmac_id >= 0 && old_pmac_id != adapter->pmac_id[0])3780 be_dev_mac_del(adapter, old_pmac_id);3781 3782 ether_addr_copy(adapter->dev_mac, adapter->netdev->dev_addr);3783 }3784 3785 if (adapter->vlans_added)3786 be_vid_config(adapter);3787 3788 __be_set_rx_mode(adapter);3789 3790 return 0;3791}3792 3793static int be_open(struct net_device *netdev)3794{3795 struct be_adapter *adapter = netdev_priv(netdev);3796 struct be_eq_obj *eqo;3797 struct be_rx_obj *rxo;3798 struct be_tx_obj *txo;3799 u8 link_status;3800 int status, i;3801 3802 status = be_rx_qs_create(adapter);3803 if (status)3804 goto err;3805 3806 status = be_enable_if_filters(adapter);3807 if (status)3808 goto err;3809 3810 status = be_irq_register(adapter);3811 if (status)3812 goto err;3813 3814 for_all_rx_queues(adapter, rxo, i)3815 be_cq_notify(adapter, rxo->cq.id, true, 0);3816 3817 for_all_tx_queues(adapter, txo, i)3818 be_cq_notify(adapter, txo->cq.id, true, 0);3819 3820 be_async_mcc_enable(adapter);3821 3822 for_all_evt_queues(adapter, eqo, i) {3823 napi_enable(&eqo->napi);3824 be_eq_notify(adapter, eqo->q.id, true, true, 0, 0);3825 }3826 adapter->flags |= BE_FLAGS_NAPI_ENABLED;3827 3828 status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);3829 if (!status)3830 be_link_status_update(adapter, link_status);3831 3832 netif_tx_start_all_queues(netdev);3833 3834 udp_tunnel_nic_reset_ntf(netdev);3835 3836 return 0;3837err:3838 be_close(adapter->netdev);3839 return -EIO;3840}3841 3842static void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)3843{3844 u32 addr;3845 3846 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);3847 3848 mac[5] = (u8)(addr & 0xFF);3849 mac[4] = (u8)((addr >> 8) & 0xFF);3850 mac[3] = (u8)((addr >> 16) & 0xFF);3851 /* Use the OUI from the current MAC address */3852 memcpy(mac, adapter->netdev->dev_addr, 3);3853}3854 3855/*3856 * Generate a seed MAC address from the PF MAC Address using jhash.3857 * MAC Address for VFs are assigned incrementally starting from the seed.3858 * These addresses are programmed in the ASIC by the PF and the VF driver3859 * queries for the MAC address during its probe.3860 */3861static int be_vf_eth_addr_config(struct be_adapter *adapter)3862{3863 u32 vf;3864 int status = 0;3865 u8 mac[ETH_ALEN];3866 struct be_vf_cfg *vf_cfg;3867 3868 be_vf_eth_addr_generate(adapter, mac);3869 3870 for_all_vfs(adapter, vf_cfg, vf) {3871 if (BEx_chip(adapter))3872 status = be_cmd_pmac_add(adapter, mac,3873 vf_cfg->if_handle,3874 &vf_cfg->pmac_id, vf + 1);3875 else3876 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,3877 vf + 1);3878 3879 if (status)3880 dev_err(&adapter->pdev->dev,3881 "Mac address assignment failed for VF %d\n",3882 vf);3883 else3884 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);3885 3886 mac[5] += 1;3887 }3888 return status;3889}3890 3891static int be_vfs_mac_query(struct be_adapter *adapter)3892{3893 int status, vf;3894 u8 mac[ETH_ALEN];3895 struct be_vf_cfg *vf_cfg;3896 3897 for_all_vfs(adapter, vf_cfg, vf) {3898 status = be_cmd_get_active_mac(adapter, vf_cfg->pmac_id,3899 mac, vf_cfg->if_handle,3900 false, vf+1);3901 if (status)3902 return status;3903 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);3904 }3905 return 0;3906}3907 3908static void be_vf_clear(struct be_adapter *adapter)3909{3910 struct be_vf_cfg *vf_cfg;3911 u32 vf;3912 3913 if (pci_vfs_assigned(adapter->pdev)) {3914 dev_warn(&adapter->pdev->dev,3915 "VFs are assigned to VMs: not disabling VFs\n");3916 goto done;3917 }3918 3919 pci_disable_sriov(adapter->pdev);3920 3921 for_all_vfs(adapter, vf_cfg, vf) {3922 if (BEx_chip(adapter))3923 be_cmd_pmac_del(adapter, vf_cfg->if_handle,3924 vf_cfg->pmac_id, vf + 1);3925 else3926 be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle,3927 vf + 1);3928 3929 be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1);3930 }3931 3932 if (BE3_chip(adapter))3933 be_cmd_set_hsw_config(adapter, 0, 0,3934 adapter->if_handle,3935 PORT_FWD_TYPE_PASSTHRU, 0);3936done:3937 kfree(adapter->vf_cfg);3938 adapter->num_vfs = 0;3939 adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;3940}3941 3942static void be_clear_queues(struct be_adapter *adapter)3943{3944 be_mcc_queues_destroy(adapter);3945 be_rx_cqs_destroy(adapter);3946 be_tx_queues_destroy(adapter);3947 be_evt_queues_destroy(adapter);3948}3949 3950static void be_cancel_worker(struct be_adapter *adapter)3951{3952 if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) {3953 cancel_delayed_work_sync(&adapter->work);3954 adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED;3955 }3956}3957 3958static void be_cancel_err_detection(struct be_adapter *adapter)3959{3960 struct be_error_recovery *err_rec = &adapter->error_recovery;3961 3962 if (!be_err_recovery_workq)3963 return;3964 3965 if (adapter->flags & BE_FLAGS_ERR_DETECTION_SCHEDULED) {3966 cancel_delayed_work_sync(&err_rec->err_detection_work);3967 adapter->flags &= ~BE_FLAGS_ERR_DETECTION_SCHEDULED;3968 }3969}3970 3971/* VxLAN offload Notes:3972 *3973 * The stack defines tunnel offload flags (hw_enc_features) for IP and doesn't3974 * distinguish various types of transports (VxLAN, GRE, NVGRE ..). So, offload3975 * is expected to work across all types of IP tunnels once exported. Skyhawk3976 * supports offloads for either VxLAN or NVGRE, exclusively. So we export VxLAN3977 * offloads in hw_enc_features only when a VxLAN port is added. If other (non3978 * VxLAN) tunnels are configured while VxLAN offloads are enabled, offloads for3979 * those other tunnels are unexported on the fly through ndo_features_check().3980 */3981static int be_vxlan_set_port(struct net_device *netdev, unsigned int table,3982 unsigned int entry, struct udp_tunnel_info *ti)3983{3984 struct be_adapter *adapter = netdev_priv(netdev);3985 struct device *dev = &adapter->pdev->dev;3986 int status;3987 3988 status = be_cmd_manage_iface(adapter, adapter->if_handle,3989 OP_CONVERT_NORMAL_TO_TUNNEL);3990 if (status) {3991 dev_warn(dev, "Failed to convert normal interface to tunnel\n");3992 return status;3993 }3994 adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS;3995 3996 status = be_cmd_set_vxlan_port(adapter, ti->port);3997 if (status) {3998 dev_warn(dev, "Failed to add VxLAN port\n");3999 return status;4000 }4001 adapter->vxlan_port = ti->port;4002 4003 netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |4004 NETIF_F_TSO | NETIF_F_TSO6 |4005 NETIF_F_GSO_UDP_TUNNEL;4006 4007 dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n",4008 be16_to_cpu(ti->port));4009 return 0;4010}4011 4012static int be_vxlan_unset_port(struct net_device *netdev, unsigned int table,4013 unsigned int entry, struct udp_tunnel_info *ti)4014{4015 struct be_adapter *adapter = netdev_priv(netdev);4016 4017 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)4018 be_cmd_manage_iface(adapter, adapter->if_handle,4019 OP_CONVERT_TUNNEL_TO_NORMAL);4020 4021 if (adapter->vxlan_port)4022 be_cmd_set_vxlan_port(adapter, 0);4023 4024 adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS;4025 adapter->vxlan_port = 0;4026 4027 netdev->hw_enc_features = 0;4028 return 0;4029}4030 4031static const struct udp_tunnel_nic_info be_udp_tunnels = {4032 .set_port = be_vxlan_set_port,4033 .unset_port = be_vxlan_unset_port,4034 .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |4035 UDP_TUNNEL_NIC_INFO_OPEN_ONLY,4036 .tables = {4037 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },4038 },4039};4040 4041static void be_calculate_vf_res(struct be_adapter *adapter, u16 num_vfs,4042 struct be_resources *vft_res)4043{4044 struct be_resources res = adapter->pool_res;4045 u32 vf_if_cap_flags = res.vf_if_cap_flags;4046 struct be_resources res_mod = {0};4047 u16 num_vf_qs = 1;4048 4049 /* Distribute the queue resources among the PF and it's VFs */4050 if (num_vfs) {4051 /* Divide the rx queues evenly among the VFs and the PF, capped4052 * at VF-EQ-count. Any remainder queues belong to the PF.4053 */4054 num_vf_qs = min(SH_VF_MAX_NIC_EQS,4055 res.max_rss_qs / (num_vfs + 1));4056 4057 /* Skyhawk-R chip supports only MAX_PORT_RSS_TABLES4058 * RSS Tables per port. Provide RSS on VFs, only if number of4059 * VFs requested is less than it's PF Pool's RSS Tables limit.4060 */4061 if (num_vfs >= be_max_pf_pool_rss_tables(adapter))4062 num_vf_qs = 1;4063 }4064 4065 /* Resource with fields set to all '1's by GET_PROFILE_CONFIG cmd,4066 * which are modifiable using SET_PROFILE_CONFIG cmd.4067 */4068 be_cmd_get_profile_config(adapter, &res_mod, NULL, ACTIVE_PROFILE_TYPE,4069 RESOURCE_MODIFIABLE, 0);4070 4071 /* If RSS IFACE capability flags are modifiable for a VF, set the4072 * capability flag as valid and set RSS and DEFQ_RSS IFACE flags if4073 * more than 1 RSSQ is available for a VF.4074 * Otherwise, provision only 1 queue pair for VF.4075 */4076 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_RSS) {4077 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);4078 if (num_vf_qs > 1) {4079 vf_if_cap_flags |= BE_IF_FLAGS_RSS;4080 if (res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS)4081 vf_if_cap_flags |= BE_IF_FLAGS_DEFQ_RSS;4082 } else {4083 vf_if_cap_flags &= ~(BE_IF_FLAGS_RSS |4084 BE_IF_FLAGS_DEFQ_RSS);4085 }4086 } else {4087 num_vf_qs = 1;4088 }4089 4090 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {4091 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);4092 vf_if_cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;4093 }4094 4095 vft_res->vf_if_cap_flags = vf_if_cap_flags;4096 vft_res->max_rx_qs = num_vf_qs;4097 vft_res->max_rss_qs = num_vf_qs;4098 vft_res->max_tx_qs = res.max_tx_qs / (num_vfs + 1);4099 vft_res->max_cq_count = res.max_cq_count / (num_vfs + 1);4100 4101 /* Distribute unicast MACs, VLANs, IFACE count and MCCQ count equally4102 * among the PF and it's VFs, if the fields are changeable4103 */4104 if (res_mod.max_uc_mac == FIELD_MODIFIABLE)4105 vft_res->max_uc_mac = res.max_uc_mac / (num_vfs + 1);4106 4107 if (res_mod.max_vlans == FIELD_MODIFIABLE)4108 vft_res->max_vlans = res.max_vlans / (num_vfs + 1);4109 4110 if (res_mod.max_iface_count == FIELD_MODIFIABLE)4111 vft_res->max_iface_count = res.max_iface_count / (num_vfs + 1);4112 4113 if (res_mod.max_mcc_count == FIELD_MODIFIABLE)4114 vft_res->max_mcc_count = res.max_mcc_count / (num_vfs + 1);4115}4116 4117static void be_if_destroy(struct be_adapter *adapter)4118{4119 be_cmd_if_destroy(adapter, adapter->if_handle, 0);4120 4121 kfree(adapter->pmac_id);4122 adapter->pmac_id = NULL;4123 4124 kfree(adapter->mc_list);4125 adapter->mc_list = NULL;4126 4127 kfree(adapter->uc_list);4128 adapter->uc_list = NULL;4129}4130 4131static int be_clear(struct be_adapter *adapter)4132{4133 struct pci_dev *pdev = adapter->pdev;4134 struct be_resources vft_res = {0};4135 4136 be_cancel_worker(adapter);4137 4138 flush_workqueue(be_wq);4139 4140 if (sriov_enabled(adapter))4141 be_vf_clear(adapter);4142 4143 /* Re-configure FW to distribute resources evenly across max-supported4144 * number of VFs, only when VFs are not already enabled.4145 */4146 if (skyhawk_chip(adapter) && be_physfn(adapter) &&4147 !pci_vfs_assigned(pdev)) {4148 be_calculate_vf_res(adapter,4149 pci_sriov_get_totalvfs(pdev),4150 &vft_res);4151 be_cmd_set_sriov_config(adapter, adapter->pool_res,4152 pci_sriov_get_totalvfs(pdev),4153 &vft_res);4154 }4155 4156 be_vxlan_unset_port(adapter->netdev, 0, 0, NULL);4157 4158 be_if_destroy(adapter);4159 4160 be_clear_queues(adapter);4161 4162 be_msix_disable(adapter);4163 adapter->flags &= ~BE_FLAGS_SETUP_DONE;4164 return 0;4165}4166 4167static int be_vfs_if_create(struct be_adapter *adapter)4168{4169 struct be_resources res = {0};4170 u32 cap_flags, en_flags, vf;4171 struct be_vf_cfg *vf_cfg;4172 int status;4173 4174 /* If a FW profile exists, then cap_flags are updated */4175 cap_flags = BE_VF_IF_EN_FLAGS;4176 4177 for_all_vfs(adapter, vf_cfg, vf) {4178 if (!BE3_chip(adapter)) {4179 status = be_cmd_get_profile_config(adapter, &res, NULL,4180 ACTIVE_PROFILE_TYPE,4181 RESOURCE_LIMITS,4182 vf + 1);4183 if (!status) {4184 cap_flags = res.if_cap_flags;4185 /* Prevent VFs from enabling VLAN promiscuous4186 * mode4187 */4188 cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;4189 }4190 }4191 4192 /* PF should enable IF flags during proxy if_create call */4193 en_flags = cap_flags & BE_VF_IF_EN_FLAGS;4194 status = be_cmd_if_create(adapter, cap_flags, en_flags,4195 &vf_cfg->if_handle, vf + 1);4196 if (status)4197 return status;4198 }4199 4200 return 0;4201}4202 4203static int be_vf_setup_init(struct be_adapter *adapter)4204{4205 struct be_vf_cfg *vf_cfg;4206 int vf;4207 4208 adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg),4209 GFP_KERNEL);4210 if (!adapter->vf_cfg)4211 return -ENOMEM;4212 4213 for_all_vfs(adapter, vf_cfg, vf) {4214 vf_cfg->if_handle = -1;4215 vf_cfg->pmac_id = -1;4216 }4217 return 0;4218}4219 4220static int be_vf_setup(struct be_adapter *adapter)4221{4222 struct device *dev = &adapter->pdev->dev;4223 struct be_vf_cfg *vf_cfg;4224 int status, old_vfs, vf;4225 bool spoofchk;4226 4227 old_vfs = pci_num_vf(adapter->pdev);4228 4229 status = be_vf_setup_init(adapter);4230 if (status)4231 goto err;4232 4233 if (old_vfs) {4234 for_all_vfs(adapter, vf_cfg, vf) {4235 status = be_cmd_get_if_id(adapter, vf_cfg, vf);4236 if (status)4237 goto err;4238 }4239 4240 status = be_vfs_mac_query(adapter);4241 if (status)4242 goto err;4243 } else {4244 status = be_vfs_if_create(adapter);4245 if (status)4246 goto err;4247 4248 status = be_vf_eth_addr_config(adapter);4249 if (status)4250 goto err;4251 }4252 4253 for_all_vfs(adapter, vf_cfg, vf) {4254 /* Allow VFs to programs MAC/VLAN filters */4255 status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges,4256 vf + 1);4257 if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {4258 status = be_cmd_set_fn_privileges(adapter,4259 vf_cfg->privileges |4260 BE_PRIV_FILTMGMT,4261 vf + 1);4262 if (!status) {4263 vf_cfg->privileges |= BE_PRIV_FILTMGMT;4264 dev_info(dev, "VF%d has FILTMGMT privilege\n",4265 vf);4266 }4267 }4268 4269 /* Allow full available bandwidth */4270 if (!old_vfs)4271 be_cmd_config_qos(adapter, 0, 0, vf + 1);4272 4273 status = be_cmd_get_hsw_config(adapter, NULL, vf + 1,4274 vf_cfg->if_handle, NULL,4275 &spoofchk);4276 if (!status)4277 vf_cfg->spoofchk = spoofchk;4278 4279 if (!old_vfs) {4280 be_cmd_enable_vf(adapter, vf + 1);4281 be_cmd_set_logical_link_config(adapter,4282 IFLA_VF_LINK_STATE_AUTO,4283 vf+1);4284 }4285 }4286 4287 if (!old_vfs) {4288 status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);4289 if (status) {4290 dev_err(dev, "SRIOV enable failed\n");4291 adapter->num_vfs = 0;4292 goto err;4293 }4294 }4295 4296 if (BE3_chip(adapter)) {4297 /* On BE3, enable VEB only when SRIOV is enabled */4298 status = be_cmd_set_hsw_config(adapter, 0, 0,4299 adapter->if_handle,4300 PORT_FWD_TYPE_VEB, 0);4301 if (status)4302 goto err;4303 }4304 4305 adapter->flags |= BE_FLAGS_SRIOV_ENABLED;4306 return 0;4307err:4308 dev_err(dev, "VF setup failed\n");4309 be_vf_clear(adapter);4310 return status;4311}4312 4313/* Converting function_mode bits on BE3 to SH mc_type enums */4314 4315static u8 be_convert_mc_type(u32 function_mode)4316{4317 if (function_mode & VNIC_MODE && function_mode & QNQ_MODE)4318 return vNIC1;4319 else if (function_mode & QNQ_MODE)4320 return FLEX10;4321 else if (function_mode & VNIC_MODE)4322 return vNIC2;4323 else if (function_mode & UMC_ENABLED)4324 return UMC;4325 else4326 return MC_NONE;4327}4328 4329/* On BE2/BE3 FW does not suggest the supported limits */4330static void BEx_get_resources(struct be_adapter *adapter,4331 struct be_resources *res)4332{4333 bool use_sriov = adapter->num_vfs ? 1 : 0;4334 4335 if (be_physfn(adapter))4336 res->max_uc_mac = BE_UC_PMAC_COUNT;4337 else4338 res->max_uc_mac = BE_VF_UC_PMAC_COUNT;4339 4340 adapter->mc_type = be_convert_mc_type(adapter->function_mode);4341 4342 if (be_is_mc(adapter)) {4343 /* Assuming that there are 4 channels per port,4344 * when multi-channel is enabled4345 */4346 if (be_is_qnq_mode(adapter))4347 res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;4348 else4349 /* In a non-qnq multichannel mode, the pvid4350 * takes up one vlan entry4351 */4352 res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1;4353 } else {4354 res->max_vlans = BE_NUM_VLANS_SUPPORTED;4355 }4356 4357 res->max_mcast_mac = BE_MAX_MC;4358 4359 /* 1) For BE3 1Gb ports, FW does not support multiple TXQs4360 * 2) Create multiple TX rings on a BE3-R multi-channel interface4361 * *only* if it is RSS-capable.4362 */4363 if (BE2_chip(adapter) || use_sriov || (adapter->port_num > 1) ||4364 be_virtfn(adapter) ||4365 (be_is_mc(adapter) &&4366 !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {4367 res->max_tx_qs = 1;4368 } else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {4369 struct be_resources super_nic_res = {0};4370 4371 /* On a SuperNIC profile, the driver needs to use the4372 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits4373 */4374 be_cmd_get_profile_config(adapter, &super_nic_res, NULL,4375 ACTIVE_PROFILE_TYPE, RESOURCE_LIMITS,4376 0);4377 /* Some old versions of BE3 FW don't report max_tx_qs value */4378 res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;4379 } else {4380 res->max_tx_qs = BE3_MAX_TX_QS;4381 }4382 4383 if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&4384 !use_sriov && be_physfn(adapter))4385 res->max_rss_qs = (adapter->be3_native) ?4386 BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;4387 res->max_rx_qs = res->max_rss_qs + 1;4388 4389 if (be_physfn(adapter))4390 res->max_evt_qs = (be_max_vfs(adapter) > 0) ?4391 BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;4392 else4393 res->max_evt_qs = 1;4394 4395 res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;4396 res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS;4397 if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))4398 res->if_cap_flags &= ~BE_IF_FLAGS_RSS;4399}4400 4401static void be_setup_init(struct be_adapter *adapter)4402{4403 adapter->vlan_prio_bmap = 0xff;4404 adapter->phy.link_speed = -1;4405 adapter->if_handle = -1;4406 adapter->be3_native = false;4407 adapter->if_flags = 0;4408 adapter->phy_state = BE_UNKNOWN_PHY_STATE;4409 if (be_physfn(adapter))4410 adapter->cmd_privileges = MAX_PRIVILEGES;4411 else4412 adapter->cmd_privileges = MIN_PRIVILEGES;4413}4414 4415/* HW supports only MAX_PORT_RSS_TABLES RSS Policy Tables per port.4416 * However, this HW limitation is not exposed to the host via any SLI cmd.4417 * As a result, in the case of SRIOV and in particular multi-partition configs4418 * the driver needs to calcuate a proportional share of RSS Tables per PF-pool4419 * for distribution between the VFs. This self-imposed limit will determine the4420 * no: of VFs for which RSS can be enabled.4421 */4422static void be_calculate_pf_pool_rss_tables(struct be_adapter *adapter)4423{4424 struct be_port_resources port_res = {0};4425 u8 rss_tables_on_port;4426 u16 max_vfs = be_max_vfs(adapter);4427 4428 be_cmd_get_profile_config(adapter, NULL, &port_res, SAVED_PROFILE_TYPE,4429 RESOURCE_LIMITS, 0);4430 4431 rss_tables_on_port = MAX_PORT_RSS_TABLES - port_res.nic_pfs;4432 4433 /* Each PF Pool's RSS Tables limit =4434 * PF's Max VFs / Total_Max_VFs on Port * RSS Tables on Port4435 */4436 adapter->pool_res.max_rss_tables =4437 max_vfs * rss_tables_on_port / port_res.max_vfs;4438}4439 4440static int be_get_sriov_config(struct be_adapter *adapter)4441{4442 struct be_resources res = {0};4443 int max_vfs, old_vfs;4444 4445 be_cmd_get_profile_config(adapter, &res, NULL, ACTIVE_PROFILE_TYPE,4446 RESOURCE_LIMITS, 0);4447 4448 /* Some old versions of BE3 FW don't report max_vfs value */4449 if (BE3_chip(adapter) && !res.max_vfs) {4450 max_vfs = pci_sriov_get_totalvfs(adapter->pdev);4451 res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;4452 }4453 4454 adapter->pool_res = res;4455 4456 /* If during previous unload of the driver, the VFs were not disabled,4457 * then we cannot rely on the PF POOL limits for the TotalVFs value.4458 * Instead use the TotalVFs value stored in the pci-dev struct.4459 */4460 old_vfs = pci_num_vf(adapter->pdev);4461 if (old_vfs) {4462 dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n",4463 old_vfs);4464 4465 adapter->pool_res.max_vfs =4466 pci_sriov_get_totalvfs(adapter->pdev);4467 adapter->num_vfs = old_vfs;4468 }4469 4470 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {4471 be_calculate_pf_pool_rss_tables(adapter);4472 dev_info(&adapter->pdev->dev,4473 "RSS can be enabled for all VFs if num_vfs <= %d\n",4474 be_max_pf_pool_rss_tables(adapter));4475 }4476 return 0;4477}4478 4479static void be_alloc_sriov_res(struct be_adapter *adapter)4480{4481 int old_vfs = pci_num_vf(adapter->pdev);4482 struct be_resources vft_res = {0};4483 int status;4484 4485 be_get_sriov_config(adapter);4486 4487 if (!old_vfs)4488 pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter));4489 4490 /* When the HW is in SRIOV capable configuration, the PF-pool4491 * resources are given to PF during driver load, if there are no4492 * old VFs. This facility is not available in BE3 FW.4493 * Also, this is done by FW in Lancer chip.4494 */4495 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {4496 be_calculate_vf_res(adapter, 0, &vft_res);4497 status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0,4498 &vft_res);4499 if (status)4500 dev_err(&adapter->pdev->dev,4501 "Failed to optimize SRIOV resources\n");4502 }4503}4504 4505static int be_get_resources(struct be_adapter *adapter)4506{4507 struct device *dev = &adapter->pdev->dev;4508 struct be_resources res = {0};4509 int status;4510 4511 /* For Lancer, SH etc read per-function resource limits from FW.4512 * GET_FUNC_CONFIG returns per function guaranteed limits.4513 * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits4514 */4515 if (BEx_chip(adapter)) {4516 BEx_get_resources(adapter, &res);4517 } else {4518 status = be_cmd_get_func_config(adapter, &res);4519 if (status)4520 return status;4521 4522 /* If a deafault RXQ must be created, we'll use up one RSSQ*/4523 if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&4524 !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))4525 res.max_rss_qs -= 1;4526 }4527 4528 /* If RoCE is supported stash away half the EQs for RoCE */4529 res.max_nic_evt_qs = be_roce_supported(adapter) ?4530 res.max_evt_qs / 2 : res.max_evt_qs;4531 adapter->res = res;4532 4533 /* If FW supports RSS default queue, then skip creating non-RSS4534 * queue for non-IP traffic.4535 */4536 adapter->need_def_rxq = (be_if_cap_flags(adapter) &4537 BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1;4538 4539 dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",4540 be_max_txqs(adapter), be_max_rxqs(adapter),4541 be_max_rss(adapter), be_max_nic_eqs(adapter),4542 be_max_vfs(adapter));4543 dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",4544 be_max_uc(adapter), be_max_mc(adapter),4545 be_max_vlans(adapter));4546 4547 /* Ensure RX and TX queues are created in pairs at init time */4548 adapter->cfg_num_rx_irqs =4549 min_t(u16, netif_get_num_default_rss_queues(),4550 be_max_qp_irqs(adapter));4551 adapter->cfg_num_tx_irqs = adapter->cfg_num_rx_irqs;4552 return 0;4553}4554 4555static int be_get_config(struct be_adapter *adapter)4556{4557 int status, level;4558 u16 profile_id;4559 4560 status = be_cmd_get_cntl_attributes(adapter);4561 if (status)4562 return status;4563 4564 status = be_cmd_query_fw_cfg(adapter);4565 if (status)4566 return status;4567 4568 if (!lancer_chip(adapter) && be_physfn(adapter))4569 be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len);4570 4571 if (BEx_chip(adapter)) {4572 level = be_cmd_get_fw_log_level(adapter);4573 adapter->msg_enable =4574 level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;4575 }4576 4577 be_cmd_get_acpi_wol_cap(adapter);4578 pci_enable_wake(adapter->pdev, PCI_D3hot, adapter->wol_en);4579 pci_enable_wake(adapter->pdev, PCI_D3cold, adapter->wol_en);4580 4581 be_cmd_query_port_name(adapter);4582 4583 if (be_physfn(adapter)) {4584 status = be_cmd_get_active_profile(adapter, &profile_id);4585 if (!status)4586 dev_info(&adapter->pdev->dev,4587 "Using profile 0x%x\n", profile_id);4588 }4589 4590 return 0;4591}4592 4593static int be_mac_setup(struct be_adapter *adapter)4594{4595 u8 mac[ETH_ALEN];4596 int status;4597 4598 if (is_zero_ether_addr(adapter->netdev->dev_addr)) {4599 status = be_cmd_get_perm_mac(adapter, mac);4600 if (status)4601 return status;4602 4603 eth_hw_addr_set(adapter->netdev, mac);4604 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);4605 4606 /* Initial MAC for BE3 VFs is already programmed by PF */4607 if (BEx_chip(adapter) && be_virtfn(adapter))4608 memcpy(adapter->dev_mac, mac, ETH_ALEN);4609 }4610 4611 return 0;4612}4613 4614static void be_schedule_worker(struct be_adapter *adapter)4615{4616 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));4617 adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;4618}4619 4620static void be_destroy_err_recovery_workq(void)4621{4622 if (!be_err_recovery_workq)4623 return;4624 4625 destroy_workqueue(be_err_recovery_workq);4626 be_err_recovery_workq = NULL;4627}4628 4629static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay)4630{4631 struct be_error_recovery *err_rec = &adapter->error_recovery;4632 4633 if (!be_err_recovery_workq)4634 return;4635 4636 queue_delayed_work(be_err_recovery_workq, &err_rec->err_detection_work,4637 msecs_to_jiffies(delay));4638 adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED;4639}4640 4641static int be_setup_queues(struct be_adapter *adapter)4642{4643 struct net_device *netdev = adapter->netdev;4644 int status;4645 4646 status = be_evt_queues_create(adapter);4647 if (status)4648 goto err;4649 4650 status = be_tx_qs_create(adapter);4651 if (status)4652 goto err;4653 4654 status = be_rx_cqs_create(adapter);4655 if (status)4656 goto err;4657 4658 status = be_mcc_queues_create(adapter);4659 if (status)4660 goto err;4661 4662 status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);4663 if (status)4664 goto err;4665 4666 status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);4667 if (status)4668 goto err;4669 4670 return 0;4671err:4672 dev_err(&adapter->pdev->dev, "queue_setup failed\n");4673 return status;4674}4675 4676static int be_if_create(struct be_adapter *adapter)4677{4678 u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;4679 u32 cap_flags = be_if_cap_flags(adapter);4680 4681 /* alloc required memory for other filtering fields */4682 adapter->pmac_id = kcalloc(be_max_uc(adapter),4683 sizeof(*adapter->pmac_id), GFP_KERNEL);4684 if (!adapter->pmac_id)4685 return -ENOMEM;4686 4687 adapter->mc_list = kcalloc(be_max_mc(adapter),4688 sizeof(*adapter->mc_list), GFP_KERNEL);4689 if (!adapter->mc_list)4690 return -ENOMEM;4691 4692 adapter->uc_list = kcalloc(be_max_uc(adapter),4693 sizeof(*adapter->uc_list), GFP_KERNEL);4694 if (!adapter->uc_list)4695 return -ENOMEM;4696 4697 if (adapter->cfg_num_rx_irqs == 1)4698 cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS);4699 4700 en_flags &= cap_flags;4701 /* will enable all the needed filter flags in be_open() */4702 return be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,4703 &adapter->if_handle, 0);4704}4705 4706int be_update_queues(struct be_adapter *adapter)4707{4708 struct net_device *netdev = adapter->netdev;4709 int status;4710 4711 if (netif_running(netdev)) {4712 /* be_tx_timeout() must not run concurrently with this4713 * function, synchronize with an already-running dev_watchdog4714 */4715 netif_tx_lock_bh(netdev);4716 /* device cannot transmit now, avoid dev_watchdog timeouts */4717 netif_carrier_off(netdev);4718 netif_tx_unlock_bh(netdev);4719 4720 be_close(netdev);4721 }4722 4723 be_cancel_worker(adapter);4724 4725 /* If any vectors have been shared with RoCE we cannot re-program4726 * the MSIx table.4727 */4728 if (!adapter->num_msix_roce_vec)4729 be_msix_disable(adapter);4730 4731 be_clear_queues(adapter);4732 status = be_cmd_if_destroy(adapter, adapter->if_handle, 0);4733 if (status)4734 return status;4735 4736 if (!msix_enabled(adapter)) {4737 status = be_msix_enable(adapter);4738 if (status)4739 return status;4740 }4741 4742 status = be_if_create(adapter);4743 if (status)4744 return status;4745 4746 status = be_setup_queues(adapter);4747 if (status)4748 return status;4749 4750 be_schedule_worker(adapter);4751 4752 /* The IF was destroyed and re-created. We need to clear4753 * all promiscuous flags valid for the destroyed IF.4754 * Without this promisc mode is not restored during4755 * be_open() because the driver thinks that it is4756 * already enabled in HW.4757 */4758 adapter->if_flags &= ~BE_IF_FLAGS_ALL_PROMISCUOUS;4759 4760 if (netif_running(netdev))4761 status = be_open(netdev);4762 4763 return status;4764}4765 4766static inline int fw_major_num(const char *fw_ver)4767{4768 int fw_major = 0, i;4769 4770 i = sscanf(fw_ver, "%d.", &fw_major);4771 if (i != 1)4772 return 0;4773 4774 return fw_major;4775}4776 4777/* If it is error recovery, FLR the PF4778 * Else if any VFs are already enabled don't FLR the PF4779 */4780static bool be_reset_required(struct be_adapter *adapter)4781{4782 if (be_error_recovering(adapter))4783 return true;4784 else4785 return pci_num_vf(adapter->pdev) == 0;4786}4787 4788/* Wait for the FW to be ready and perform the required initialization */4789static int be_func_init(struct be_adapter *adapter)4790{4791 int status;4792 4793 status = be_fw_wait_ready(adapter);4794 if (status)4795 return status;4796 4797 /* FW is now ready; clear errors to allow cmds/doorbell */4798 be_clear_error(adapter, BE_CLEAR_ALL);4799 4800 if (be_reset_required(adapter)) {4801 status = be_cmd_reset_function(adapter);4802 if (status)4803 return status;4804 4805 /* Wait for interrupts to quiesce after an FLR */4806 msleep(100);4807 }4808 4809 /* Tell FW we're ready to fire cmds */4810 status = be_cmd_fw_init(adapter);4811 if (status)4812 return status;4813 4814 /* Allow interrupts for other ULPs running on NIC function */4815 be_intr_set(adapter, true);4816 4817 return 0;4818}4819 4820static int be_setup(struct be_adapter *adapter)4821{4822 struct device *dev = &adapter->pdev->dev;4823 int status;4824 4825 status = be_func_init(adapter);4826 if (status)4827 return status;4828 4829 be_setup_init(adapter);4830 4831 if (!lancer_chip(adapter))4832 be_cmd_req_native_mode(adapter);4833 4834 /* invoke this cmd first to get pf_num and vf_num which are needed4835 * for issuing profile related cmds4836 */4837 if (!BEx_chip(adapter)) {4838 status = be_cmd_get_func_config(adapter, NULL);4839 if (status)4840 return status;4841 }4842 4843 status = be_get_config(adapter);4844 if (status)4845 goto err;4846 4847 if (!BE2_chip(adapter) && be_physfn(adapter))4848 be_alloc_sriov_res(adapter);4849 4850 status = be_get_resources(adapter);4851 if (status)4852 goto err;4853 4854 status = be_msix_enable(adapter);4855 if (status)4856 goto err;4857 4858 /* will enable all the needed filter flags in be_open() */4859 status = be_if_create(adapter);4860 if (status)4861 goto err;4862 4863 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */4864 rtnl_lock();4865 status = be_setup_queues(adapter);4866 rtnl_unlock();4867 if (status)4868 goto err;4869 4870 be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);4871 4872 status = be_mac_setup(adapter);4873 if (status)4874 goto err;4875 4876 be_cmd_get_fw_ver(adapter);4877 dev_info(dev, "FW version is %s\n", adapter->fw_ver);4878 4879 if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {4880 dev_err(dev, "Firmware on card is old(%s), IRQs may not work",4881 adapter->fw_ver);4882 dev_err(dev, "Please upgrade firmware to version >= 4.0\n");4883 }4884 4885 status = be_cmd_set_flow_control(adapter, adapter->tx_fc,4886 adapter->rx_fc);4887 if (status)4888 be_cmd_get_flow_control(adapter, &adapter->tx_fc,4889 &adapter->rx_fc);4890 4891 dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n",4892 adapter->tx_fc, adapter->rx_fc);4893 4894 if (be_physfn(adapter))4895 be_cmd_set_logical_link_config(adapter,4896 IFLA_VF_LINK_STATE_AUTO, 0);4897 4898 /* BE3 EVB echoes broadcast/multicast packets back to PF's vport4899 * confusing a linux bridge or OVS that it might be connected to.4900 * Set the EVB to PASSTHRU mode which effectively disables the EVB4901 * when SRIOV is not enabled.4902 */4903 if (BE3_chip(adapter))4904 be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle,4905 PORT_FWD_TYPE_PASSTHRU, 0);4906 4907 if (adapter->num_vfs)4908 be_vf_setup(adapter);4909 4910 status = be_cmd_get_phy_info(adapter);4911 if (!status && be_pause_supported(adapter))4912 adapter->phy.fc_autoneg = 1;4913 4914 if (be_physfn(adapter) && !lancer_chip(adapter))4915 be_cmd_set_features(adapter);4916 4917 be_schedule_worker(adapter);4918 adapter->flags |= BE_FLAGS_SETUP_DONE;4919 return 0;4920err:4921 be_clear(adapter);4922 return status;4923}4924 4925#ifdef CONFIG_NET_POLL_CONTROLLER4926static void be_netpoll(struct net_device *netdev)4927{4928 struct be_adapter *adapter = netdev_priv(netdev);4929 struct be_eq_obj *eqo;4930 int i;4931 4932 for_all_evt_queues(adapter, eqo, i) {4933 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);4934 napi_schedule(&eqo->napi);4935 }4936}4937#endif4938 4939int be_load_fw(struct be_adapter *adapter, u8 *fw_file)4940{4941 const struct firmware *fw;4942 int status;4943 4944 if (!netif_running(adapter->netdev)) {4945 dev_err(&adapter->pdev->dev,4946 "Firmware load not allowed (interface is down)\n");4947 return -ENETDOWN;4948 }4949 4950 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);4951 if (status)4952 goto fw_exit;4953 4954 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);4955 4956 if (lancer_chip(adapter))4957 status = lancer_fw_download(adapter, fw);4958 else4959 status = be_fw_download(adapter, fw);4960 4961 if (!status)4962 be_cmd_get_fw_ver(adapter);4963 4964fw_exit:4965 release_firmware(fw);4966 return status;4967}4968 4969static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,4970 u16 flags, struct netlink_ext_ack *extack)4971{4972 struct be_adapter *adapter = netdev_priv(dev);4973 struct nlattr *attr, *br_spec;4974 int rem;4975 int status = 0;4976 u16 mode = 0;4977 4978 if (!sriov_enabled(adapter))4979 return -EOPNOTSUPP;4980 4981 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);4982 if (!br_spec)4983 return -EINVAL;4984 4985 nla_for_each_nested_type(attr, IFLA_BRIDGE_MODE, br_spec, rem) {4986 mode = nla_get_u16(attr);4987 if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA)4988 return -EOPNOTSUPP;4989 4990 if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)4991 return -EINVAL;4992 4993 status = be_cmd_set_hsw_config(adapter, 0, 0,4994 adapter->if_handle,4995 mode == BRIDGE_MODE_VEPA ?4996 PORT_FWD_TYPE_VEPA :4997 PORT_FWD_TYPE_VEB, 0);4998 if (status)4999 goto err;5000 5001 dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",5002 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");5003 5004 return status;5005 }5006err:5007 dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",5008 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");5009 5010 return status;5011}5012 5013static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,5014 struct net_device *dev, u32 filter_mask,5015 int nlflags)5016{5017 struct be_adapter *adapter = netdev_priv(dev);5018 int status = 0;5019 u8 hsw_mode;5020 5021 /* BE and Lancer chips support VEB mode only */5022 if (BEx_chip(adapter) || lancer_chip(adapter)) {5023 /* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */5024 if (!pci_sriov_get_totalvfs(adapter->pdev))5025 return 0;5026 hsw_mode = PORT_FWD_TYPE_VEB;5027 } else {5028 status = be_cmd_get_hsw_config(adapter, NULL, 0,5029 adapter->if_handle, &hsw_mode,5030 NULL);5031 if (status)5032 return 0;5033 5034 if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)5035 return 0;5036 }5037 5038 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,5039 hsw_mode == PORT_FWD_TYPE_VEPA ?5040 BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,5041 0, 0, nlflags, filter_mask, NULL);5042}5043 5044static struct be_cmd_work *be_alloc_work(struct be_adapter *adapter,5045 void (*func)(struct work_struct *))5046{5047 struct be_cmd_work *work;5048 5049 work = kzalloc(sizeof(*work), GFP_ATOMIC);5050 if (!work) {5051 dev_err(&adapter->pdev->dev,5052 "be_work memory allocation failed\n");5053 return NULL;5054 }5055 5056 INIT_WORK(&work->work, func);5057 work->adapter = adapter;5058 return work;5059}5060 5061static netdev_features_t be_features_check(struct sk_buff *skb,5062 struct net_device *dev,5063 netdev_features_t features)5064{5065 struct be_adapter *adapter = netdev_priv(dev);5066 u8 l4_hdr = 0;5067 5068 if (skb_is_gso(skb)) {5069 /* IPv6 TSO requests with extension hdrs are a problem5070 * to Lancer and BE3 HW. Disable TSO6 feature.5071 */5072 if (!skyhawk_chip(adapter) && is_ipv6_ext_hdr(skb))5073 features &= ~NETIF_F_TSO6;5074 5075 /* Lancer cannot handle the packet with MSS less than 256.5076 * Also it can't handle a TSO packet with a single segment5077 * Disable the GSO support in such cases5078 */5079 if (lancer_chip(adapter) &&5080 (skb_shinfo(skb)->gso_size < 256 ||5081 skb_shinfo(skb)->gso_segs == 1))5082 features &= ~NETIF_F_GSO_MASK;5083 }5084 5085 /* The code below restricts offload features for some tunneled and5086 * Q-in-Q packets.5087 * Offload features for normal (non tunnel) packets are unchanged.5088 */5089 features = vlan_features_check(skb, features);5090 if (!skb->encapsulation ||5091 !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS))5092 return features;5093 5094 /* It's an encapsulated packet and VxLAN offloads are enabled. We5095 * should disable tunnel offload features if it's not a VxLAN packet,5096 * as tunnel offloads have been enabled only for VxLAN. This is done to5097 * allow other tunneled traffic like GRE work fine while VxLAN5098 * offloads are configured in Skyhawk-R.5099 */5100 switch (vlan_get_protocol(skb)) {5101 case htons(ETH_P_IP):5102 l4_hdr = ip_hdr(skb)->protocol;5103 break;5104 case htons(ETH_P_IPV6):5105 l4_hdr = ipv6_hdr(skb)->nexthdr;5106 break;5107 default:5108 return features;5109 }5110 5111 if (l4_hdr != IPPROTO_UDP ||5112 skb->inner_protocol_type != ENCAP_TYPE_ETHER ||5113 skb->inner_protocol != htons(ETH_P_TEB) ||5114 skb_inner_mac_header(skb) - skb_transport_header(skb) !=5115 sizeof(struct udphdr) + sizeof(struct vxlanhdr) ||5116 !adapter->vxlan_port ||5117 udp_hdr(skb)->dest != adapter->vxlan_port)5118 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);5119 5120 return features;5121}5122 5123static int be_get_phys_port_id(struct net_device *dev,5124 struct netdev_phys_item_id *ppid)5125{5126 int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1;5127 struct be_adapter *adapter = netdev_priv(dev);5128 u8 *id;5129 5130 if (MAX_PHYS_ITEM_ID_LEN < id_len)5131 return -ENOSPC;5132 5133 ppid->id[0] = adapter->hba_port_num + 1;5134 id = &ppid->id[1];5135 for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0;5136 i--, id += CNTL_SERIAL_NUM_WORD_SZ)5137 memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ);5138 5139 ppid->id_len = id_len;5140 5141 return 0;5142}5143 5144static void be_set_rx_mode(struct net_device *dev)5145{5146 struct be_adapter *adapter = netdev_priv(dev);5147 struct be_cmd_work *work;5148 5149 work = be_alloc_work(adapter, be_work_set_rx_mode);5150 if (work)5151 queue_work(be_wq, &work->work);5152}5153 5154static const struct net_device_ops be_netdev_ops = {5155 .ndo_open = be_open,5156 .ndo_stop = be_close,5157 .ndo_start_xmit = be_xmit,5158 .ndo_set_rx_mode = be_set_rx_mode,5159 .ndo_set_mac_address = be_mac_addr_set,5160 .ndo_get_stats64 = be_get_stats64,5161 .ndo_validate_addr = eth_validate_addr,5162 .ndo_vlan_rx_add_vid = be_vlan_add_vid,5163 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,5164 .ndo_set_vf_mac = be_set_vf_mac,5165 .ndo_set_vf_vlan = be_set_vf_vlan,5166 .ndo_set_vf_rate = be_set_vf_tx_rate,5167 .ndo_get_vf_config = be_get_vf_config,5168 .ndo_set_vf_link_state = be_set_vf_link_state,5169 .ndo_set_vf_spoofchk = be_set_vf_spoofchk,5170 .ndo_tx_timeout = be_tx_timeout,5171#ifdef CONFIG_NET_POLL_CONTROLLER5172 .ndo_poll_controller = be_netpoll,5173#endif5174 .ndo_bridge_setlink = be_ndo_bridge_setlink,5175 .ndo_bridge_getlink = be_ndo_bridge_getlink,5176 .ndo_features_check = be_features_check,5177 .ndo_get_phys_port_id = be_get_phys_port_id,5178};5179 5180static void be_netdev_init(struct net_device *netdev)5181{5182 struct be_adapter *adapter = netdev_priv(netdev);5183 5184 netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |5185 NETIF_F_GSO_UDP_TUNNEL |5186 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |5187 NETIF_F_HW_VLAN_CTAG_TX;5188 if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS))5189 netdev->hw_features |= NETIF_F_RXHASH;5190 5191 netdev->features |= netdev->hw_features |5192 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER |5193 NETIF_F_HIGHDMA;5194 5195 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |5196 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;5197 5198 netdev->priv_flags |= IFF_UNICAST_FLT;5199 5200 netdev->flags |= IFF_MULTICAST;5201 5202 netif_set_tso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN);5203 5204 netdev->netdev_ops = &be_netdev_ops;5205 5206 netdev->ethtool_ops = &be_ethtool_ops;5207 5208 if (!lancer_chip(adapter) && !BEx_chip(adapter) && !be_is_mc(adapter))5209 netdev->udp_tunnel_nic_info = &be_udp_tunnels;5210 5211 /* MTU range: 256 - 9000 */5212 netdev->min_mtu = BE_MIN_MTU;5213 netdev->max_mtu = BE_MAX_MTU;5214}5215 5216static void be_cleanup(struct be_adapter *adapter)5217{5218 struct net_device *netdev = adapter->netdev;5219 5220 rtnl_lock();5221 netif_device_detach(netdev);5222 if (netif_running(netdev))5223 be_close(netdev);5224 rtnl_unlock();5225 5226 be_clear(adapter);5227}5228 5229static int be_resume(struct be_adapter *adapter)5230{5231 struct net_device *netdev = adapter->netdev;5232 int status;5233 5234 status = be_setup(adapter);5235 if (status)5236 return status;5237 5238 rtnl_lock();5239 if (netif_running(netdev))5240 status = be_open(netdev);5241 rtnl_unlock();5242 5243 if (status)5244 return status;5245 5246 netif_device_attach(netdev);5247 5248 return 0;5249}5250 5251static void be_soft_reset(struct be_adapter *adapter)5252{5253 u32 val;5254 5255 dev_info(&adapter->pdev->dev, "Initiating chip soft reset\n");5256 val = ioread32(adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);5257 val |= SLIPORT_SOFTRESET_SR_MASK;5258 iowrite32(val, adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);5259}5260 5261static bool be_err_is_recoverable(struct be_adapter *adapter)5262{5263 struct be_error_recovery *err_rec = &adapter->error_recovery;5264 unsigned long initial_idle_time =5265 msecs_to_jiffies(ERR_RECOVERY_IDLE_TIME);5266 unsigned long recovery_interval =5267 msecs_to_jiffies(ERR_RECOVERY_INTERVAL);5268 u16 ue_err_code;5269 u32 val;5270 5271 val = be_POST_stage_get(adapter);5272 if ((val & POST_STAGE_RECOVERABLE_ERR) != POST_STAGE_RECOVERABLE_ERR)5273 return false;5274 ue_err_code = val & POST_ERR_RECOVERY_CODE_MASK;5275 if (ue_err_code == 0)5276 return false;5277 5278 dev_err(&adapter->pdev->dev, "Recoverable HW error code: 0x%x\n",5279 ue_err_code);5280 5281 if (time_before_eq(jiffies - err_rec->probe_time, initial_idle_time)) {5282 dev_err(&adapter->pdev->dev,5283 "Cannot recover within %lu sec from driver load\n",5284 jiffies_to_msecs(initial_idle_time) / MSEC_PER_SEC);5285 return false;5286 }5287 5288 if (err_rec->last_recovery_time && time_before_eq(5289 jiffies - err_rec->last_recovery_time, recovery_interval)) {5290 dev_err(&adapter->pdev->dev,5291 "Cannot recover within %lu sec from last recovery\n",5292 jiffies_to_msecs(recovery_interval) / MSEC_PER_SEC);5293 return false;5294 }5295 5296 if (ue_err_code == err_rec->last_err_code) {5297 dev_err(&adapter->pdev->dev,5298 "Cannot recover from a consecutive TPE error\n");5299 return false;5300 }5301 5302 err_rec->last_recovery_time = jiffies;5303 err_rec->last_err_code = ue_err_code;5304 return true;5305}5306 5307static int be_tpe_recover(struct be_adapter *adapter)5308{5309 struct be_error_recovery *err_rec = &adapter->error_recovery;5310 int status = -EAGAIN;5311 u32 val;5312 5313 switch (err_rec->recovery_state) {5314 case ERR_RECOVERY_ST_NONE:5315 err_rec->recovery_state = ERR_RECOVERY_ST_DETECT;5316 err_rec->resched_delay = ERR_RECOVERY_UE_DETECT_DURATION;5317 break;5318 5319 case ERR_RECOVERY_ST_DETECT:5320 val = be_POST_stage_get(adapter);5321 if ((val & POST_STAGE_RECOVERABLE_ERR) !=5322 POST_STAGE_RECOVERABLE_ERR) {5323 dev_err(&adapter->pdev->dev,5324 "Unrecoverable HW error detected: 0x%x\n", val);5325 status = -EINVAL;5326 err_rec->resched_delay = 0;5327 break;5328 }5329 5330 dev_err(&adapter->pdev->dev, "Recoverable HW error detected\n");5331 5332 /* Only PF0 initiates Chip Soft Reset. But PF0 must wait UE2SR5333 * milliseconds before it checks for final error status in5334 * SLIPORT_SEMAPHORE to determine if recovery criteria is met.5335 * If it does, then PF0 initiates a Soft Reset.5336 */5337 if (adapter->pf_num == 0) {5338 err_rec->recovery_state = ERR_RECOVERY_ST_RESET;5339 err_rec->resched_delay = err_rec->ue_to_reset_time -5340 ERR_RECOVERY_UE_DETECT_DURATION;5341 break;5342 }5343 5344 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;5345 err_rec->resched_delay = err_rec->ue_to_poll_time -5346 ERR_RECOVERY_UE_DETECT_DURATION;5347 break;5348 5349 case ERR_RECOVERY_ST_RESET:5350 if (!be_err_is_recoverable(adapter)) {5351 dev_err(&adapter->pdev->dev,5352 "Failed to meet recovery criteria\n");5353 status = -EIO;5354 err_rec->resched_delay = 0;5355 break;5356 }5357 be_soft_reset(adapter);5358 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;5359 err_rec->resched_delay = err_rec->ue_to_poll_time -5360 err_rec->ue_to_reset_time;5361 break;5362 5363 case ERR_RECOVERY_ST_PRE_POLL:5364 err_rec->recovery_state = ERR_RECOVERY_ST_REINIT;5365 err_rec->resched_delay = 0;5366 status = 0; /* done */5367 break;5368 5369 default:5370 status = -EINVAL;5371 err_rec->resched_delay = 0;5372 break;5373 }5374 5375 return status;5376}5377 5378static int be_err_recover(struct be_adapter *adapter)5379{5380 int status;5381 5382 if (!lancer_chip(adapter)) {5383 if (!adapter->error_recovery.recovery_supported ||5384 adapter->priv_flags & BE_DISABLE_TPE_RECOVERY)5385 return -EIO;5386 status = be_tpe_recover(adapter);5387 if (status)5388 goto err;5389 }5390 5391 /* Wait for adapter to reach quiescent state before5392 * destroying queues5393 */5394 status = be_fw_wait_ready(adapter);5395 if (status)5396 goto err;5397 5398 adapter->flags |= BE_FLAGS_TRY_RECOVERY;5399 5400 be_cleanup(adapter);5401 5402 status = be_resume(adapter);5403 if (status)5404 goto err;5405 5406 adapter->flags &= ~BE_FLAGS_TRY_RECOVERY;5407 5408err:5409 return status;5410}5411 5412static void be_err_detection_task(struct work_struct *work)5413{5414 struct be_error_recovery *err_rec =5415 container_of(work, struct be_error_recovery,5416 err_detection_work.work);5417 struct be_adapter *adapter =5418 container_of(err_rec, struct be_adapter,5419 error_recovery);5420 u32 resched_delay = ERR_RECOVERY_DETECTION_DELAY;5421 struct device *dev = &adapter->pdev->dev;5422 int recovery_status;5423 5424 be_detect_error(adapter);5425 if (!be_check_error(adapter, BE_ERROR_HW))5426 goto reschedule_task;5427 5428 recovery_status = be_err_recover(adapter);5429 if (!recovery_status) {5430 err_rec->recovery_retries = 0;5431 err_rec->recovery_state = ERR_RECOVERY_ST_NONE;5432 dev_info(dev, "Adapter recovery successful\n");5433 goto reschedule_task;5434 } else if (!lancer_chip(adapter) && err_rec->resched_delay) {5435 /* BEx/SH recovery state machine */5436 if (adapter->pf_num == 0 &&5437 err_rec->recovery_state > ERR_RECOVERY_ST_DETECT)5438 dev_err(&adapter->pdev->dev,5439 "Adapter recovery in progress\n");5440 resched_delay = err_rec->resched_delay;5441 goto reschedule_task;5442 } else if (lancer_chip(adapter) && be_virtfn(adapter)) {5443 /* For VFs, check if PF have allocated resources5444 * every second.5445 */5446 dev_err(dev, "Re-trying adapter recovery\n");5447 goto reschedule_task;5448 } else if (lancer_chip(adapter) && err_rec->recovery_retries++ <5449 ERR_RECOVERY_MAX_RETRY_COUNT) {5450 /* In case of another error during recovery, it takes 30 sec5451 * for adapter to come out of error. Retry error recovery after5452 * this time interval.5453 */5454 dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n");5455 resched_delay = ERR_RECOVERY_RETRY_DELAY;5456 goto reschedule_task;5457 } else {5458 dev_err(dev, "Adapter recovery failed\n");5459 dev_err(dev, "Please reboot server to recover\n");5460 }5461 5462 return;5463 5464reschedule_task:5465 be_schedule_err_detection(adapter, resched_delay);5466}5467 5468static void be_log_sfp_info(struct be_adapter *adapter)5469{5470 int status;5471 5472 status = be_cmd_query_sfp_info(adapter);5473 if (!status) {5474 dev_err(&adapter->pdev->dev,5475 "Port %c: %s Vendor: %s part no: %s",5476 adapter->port_name,5477 be_misconfig_evt_port_state[adapter->phy_state],5478 adapter->phy.vendor_name,5479 adapter->phy.vendor_pn);5480 }5481 adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED;5482}5483 5484static void be_worker(struct work_struct *work)5485{5486 struct be_adapter *adapter =5487 container_of(work, struct be_adapter, work.work);5488 struct be_rx_obj *rxo;5489 int i;5490 5491 if (be_physfn(adapter) &&5492 MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)5493 be_cmd_get_die_temperature(adapter);5494 5495 /* when interrupts are not yet enabled, just reap any pending5496 * mcc completions5497 */5498 if (!netif_running(adapter->netdev)) {5499 local_bh_disable();5500 be_process_mcc(adapter);5501 local_bh_enable();5502 goto reschedule;5503 }5504 5505 if (!adapter->stats_cmd_sent) {5506 if (lancer_chip(adapter))5507 lancer_cmd_get_pport_stats(adapter,5508 &adapter->stats_cmd);5509 else5510 be_cmd_get_stats(adapter, &adapter->stats_cmd);5511 }5512 5513 for_all_rx_queues(adapter, rxo, i) {5514 /* Replenish RX-queues starved due to memory5515 * allocation failures.5516 */5517 if (rxo->rx_post_starved)5518 be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST);5519 }5520 5521 /* EQ-delay update for Skyhawk is done while notifying EQ */5522 if (!skyhawk_chip(adapter))5523 be_eqd_update(adapter, false);5524 5525 if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED)5526 be_log_sfp_info(adapter);5527 5528reschedule:5529 adapter->work_counter++;5530 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));5531}5532 5533static void be_unmap_pci_bars(struct be_adapter *adapter)5534{5535 if (adapter->csr)5536 pci_iounmap(adapter->pdev, adapter->csr);5537 if (adapter->db)5538 pci_iounmap(adapter->pdev, adapter->db);5539 if (adapter->pcicfg && adapter->pcicfg_mapped)5540 pci_iounmap(adapter->pdev, adapter->pcicfg);5541}5542 5543static int db_bar(struct be_adapter *adapter)5544{5545 if (lancer_chip(adapter) || be_virtfn(adapter))5546 return 0;5547 else5548 return 4;5549}5550 5551static int be_roce_map_pci_bars(struct be_adapter *adapter)5552{5553 if (skyhawk_chip(adapter)) {5554 adapter->roce_db.size = 4096;5555 adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,5556 db_bar(adapter));5557 adapter->roce_db.total_size = pci_resource_len(adapter->pdev,5558 db_bar(adapter));5559 }5560 return 0;5561}5562 5563static int be_map_pci_bars(struct be_adapter *adapter)5564{5565 struct pci_dev *pdev = adapter->pdev;5566 u8 __iomem *addr;5567 u32 sli_intf;5568 5569 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);5570 adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>5571 SLI_INTF_FAMILY_SHIFT;5572 adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;5573 5574 if (BEx_chip(adapter) && be_physfn(adapter)) {5575 adapter->csr = pci_iomap(pdev, 2, 0);5576 if (!adapter->csr)5577 return -ENOMEM;5578 }5579 5580 addr = pci_iomap(pdev, db_bar(adapter), 0);5581 if (!addr)5582 goto pci_map_err;5583 adapter->db = addr;5584 5585 if (skyhawk_chip(adapter) || BEx_chip(adapter)) {5586 if (be_physfn(adapter)) {5587 /* PCICFG is the 2nd BAR in BE2 */5588 addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0);5589 if (!addr)5590 goto pci_map_err;5591 adapter->pcicfg = addr;5592 adapter->pcicfg_mapped = true;5593 } else {5594 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;5595 adapter->pcicfg_mapped = false;5596 }5597 }5598 5599 be_roce_map_pci_bars(adapter);5600 return 0;5601 5602pci_map_err:5603 dev_err(&pdev->dev, "Error in mapping PCI BARs\n");5604 be_unmap_pci_bars(adapter);5605 return -ENOMEM;5606}5607 5608static void be_drv_cleanup(struct be_adapter *adapter)5609{5610 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;5611 struct device *dev = &adapter->pdev->dev;5612 5613 if (mem->va)5614 dma_free_coherent(dev, mem->size, mem->va, mem->dma);5615 5616 mem = &adapter->rx_filter;5617 if (mem->va)5618 dma_free_coherent(dev, mem->size, mem->va, mem->dma);5619 5620 mem = &adapter->stats_cmd;5621 if (mem->va)5622 dma_free_coherent(dev, mem->size, mem->va, mem->dma);5623}5624 5625/* Allocate and initialize various fields in be_adapter struct */5626static int be_drv_init(struct be_adapter *adapter)5627{5628 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;5629 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;5630 struct be_dma_mem *rx_filter = &adapter->rx_filter;5631 struct be_dma_mem *stats_cmd = &adapter->stats_cmd;5632 struct device *dev = &adapter->pdev->dev;5633 int status = 0;5634 5635 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;5636 mbox_mem_alloc->va = dma_alloc_coherent(dev, mbox_mem_alloc->size,5637 &mbox_mem_alloc->dma,5638 GFP_KERNEL);5639 if (!mbox_mem_alloc->va)5640 return -ENOMEM;5641 5642 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);5643 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);5644 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);5645 5646 rx_filter->size = sizeof(struct be_cmd_req_rx_filter);5647 rx_filter->va = dma_alloc_coherent(dev, rx_filter->size,5648 &rx_filter->dma, GFP_KERNEL);5649 if (!rx_filter->va) {5650 status = -ENOMEM;5651 goto free_mbox;5652 }5653 5654 if (lancer_chip(adapter))5655 stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats);5656 else if (BE2_chip(adapter))5657 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0);5658 else if (BE3_chip(adapter))5659 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1);5660 else5661 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2);5662 stats_cmd->va = dma_alloc_coherent(dev, stats_cmd->size,5663 &stats_cmd->dma, GFP_KERNEL);5664 if (!stats_cmd->va) {5665 status = -ENOMEM;5666 goto free_rx_filter;5667 }5668 5669 mutex_init(&adapter->mbox_lock);5670 mutex_init(&adapter->mcc_lock);5671 mutex_init(&adapter->rx_filter_lock);5672 spin_lock_init(&adapter->mcc_cq_lock);5673 init_completion(&adapter->et_cmd_compl);5674 5675 pci_save_state(adapter->pdev);5676 5677 INIT_DELAYED_WORK(&adapter->work, be_worker);5678 5679 adapter->error_recovery.recovery_state = ERR_RECOVERY_ST_NONE;5680 adapter->error_recovery.resched_delay = 0;5681 INIT_DELAYED_WORK(&adapter->error_recovery.err_detection_work,5682 be_err_detection_task);5683 5684 adapter->rx_fc = true;5685 adapter->tx_fc = true;5686 5687 /* Must be a power of 2 or else MODULO will BUG_ON */5688 adapter->be_get_temp_freq = 64;5689 5690 return 0;5691 5692free_rx_filter:5693 dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma);5694free_mbox:5695 dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va,5696 mbox_mem_alloc->dma);5697 return status;5698}5699 5700static void be_remove(struct pci_dev *pdev)5701{5702 struct be_adapter *adapter = pci_get_drvdata(pdev);5703 5704 if (!adapter)5705 return;5706 5707 be_roce_dev_remove(adapter);5708 be_intr_set(adapter, false);5709 5710 be_cancel_err_detection(adapter);5711 5712 unregister_netdev(adapter->netdev);5713 5714 be_clear(adapter);5715 5716 if (!pci_vfs_assigned(adapter->pdev))5717 be_cmd_reset_function(adapter);5718 5719 /* tell fw we're done with firing cmds */5720 be_cmd_fw_clean(adapter);5721 5722 be_unmap_pci_bars(adapter);5723 be_drv_cleanup(adapter);5724 5725 pci_release_regions(pdev);5726 pci_disable_device(pdev);5727 5728 free_netdev(adapter->netdev);5729}5730 5731static ssize_t be_hwmon_show_temp(struct device *dev,5732 struct device_attribute *dev_attr,5733 char *buf)5734{5735 struct be_adapter *adapter = dev_get_drvdata(dev);5736 5737 /* Unit: millidegree Celsius */5738 if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP)5739 return -EIO;5740 else5741 return sprintf(buf, "%u\n",5742 adapter->hwmon_info.be_on_die_temp * 1000);5743}5744 5745static SENSOR_DEVICE_ATTR(temp1_input, 0444,5746 be_hwmon_show_temp, NULL, 1);5747 5748static struct attribute *be_hwmon_attrs[] = {5749 &sensor_dev_attr_temp1_input.dev_attr.attr,5750 NULL5751};5752 5753ATTRIBUTE_GROUPS(be_hwmon);5754 5755static char *mc_name(struct be_adapter *adapter)5756{5757 char *str = ""; /* default */5758 5759 switch (adapter->mc_type) {5760 case UMC:5761 str = "UMC";5762 break;5763 case FLEX10:5764 str = "FLEX10";5765 break;5766 case vNIC1:5767 str = "vNIC-1";5768 break;5769 case nPAR:5770 str = "nPAR";5771 break;5772 case UFP:5773 str = "UFP";5774 break;5775 case vNIC2:5776 str = "vNIC-2";5777 break;5778 default:5779 str = "";5780 }5781 5782 return str;5783}5784 5785static inline char *func_name(struct be_adapter *adapter)5786{5787 return be_physfn(adapter) ? "PF" : "VF";5788}5789 5790static inline char *nic_name(struct pci_dev *pdev)5791{5792 switch (pdev->device) {5793 case OC_DEVICE_ID1:5794 return OC_NAME;5795 case OC_DEVICE_ID2:5796 return OC_NAME_BE;5797 case OC_DEVICE_ID3:5798 case OC_DEVICE_ID4:5799 return OC_NAME_LANCER;5800 case BE_DEVICE_ID2:5801 return BE3_NAME;5802 case OC_DEVICE_ID5:5803 case OC_DEVICE_ID6:5804 return OC_NAME_SH;5805 default:5806 return BE_NAME;5807 }5808}5809 5810static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)5811{5812 struct be_adapter *adapter;5813 struct net_device *netdev;5814 int status = 0;5815 5816 status = pci_enable_device(pdev);5817 if (status)5818 goto do_none;5819 5820 status = pci_request_regions(pdev, DRV_NAME);5821 if (status)5822 goto disable_dev;5823 pci_set_master(pdev);5824 5825 netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);5826 if (!netdev) {5827 status = -ENOMEM;5828 goto rel_reg;5829 }5830 adapter = netdev_priv(netdev);5831 adapter->pdev = pdev;5832 pci_set_drvdata(pdev, adapter);5833 adapter->netdev = netdev;5834 SET_NETDEV_DEV(netdev, &pdev->dev);5835 5836 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));5837 if (status) {5838 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");5839 goto free_netdev;5840 }5841 5842 status = be_map_pci_bars(adapter);5843 if (status)5844 goto free_netdev;5845 5846 status = be_drv_init(adapter);5847 if (status)5848 goto unmap_bars;5849 5850 status = be_setup(adapter);5851 if (status)5852 goto drv_cleanup;5853 5854 be_netdev_init(netdev);5855 status = register_netdev(netdev);5856 if (status != 0)5857 goto unsetup;5858 5859 be_roce_dev_add(adapter);5860 5861 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);5862 adapter->error_recovery.probe_time = jiffies;5863 5864 /* On Die temperature not supported for VF. */5865 if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) {5866 adapter->hwmon_info.hwmon_dev =5867 devm_hwmon_device_register_with_groups(&pdev->dev,5868 DRV_NAME,5869 adapter,5870 be_hwmon_groups);5871 adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP;5872 }5873 5874 dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),5875 func_name(adapter), mc_name(adapter), adapter->port_name);5876 5877 return 0;5878 5879unsetup:5880 be_clear(adapter);5881drv_cleanup:5882 be_drv_cleanup(adapter);5883unmap_bars:5884 be_unmap_pci_bars(adapter);5885free_netdev:5886 free_netdev(netdev);5887rel_reg:5888 pci_release_regions(pdev);5889disable_dev:5890 pci_disable_device(pdev);5891do_none:5892 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));5893 return status;5894}5895 5896static int __maybe_unused be_suspend(struct device *dev_d)5897{5898 struct be_adapter *adapter = dev_get_drvdata(dev_d);5899 5900 be_intr_set(adapter, false);5901 be_cancel_err_detection(adapter);5902 5903 be_cleanup(adapter);5904 5905 return 0;5906}5907 5908static int __maybe_unused be_pci_resume(struct device *dev_d)5909{5910 struct be_adapter *adapter = dev_get_drvdata(dev_d);5911 int status = 0;5912 5913 status = be_resume(adapter);5914 if (status)5915 return status;5916 5917 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);5918 5919 return 0;5920}5921 5922/*5923 * An FLR will stop BE from DMAing any data.5924 */5925static void be_shutdown(struct pci_dev *pdev)5926{5927 struct be_adapter *adapter = pci_get_drvdata(pdev);5928 5929 if (!adapter)5930 return;5931 5932 be_roce_dev_shutdown(adapter);5933 cancel_delayed_work_sync(&adapter->work);5934 be_cancel_err_detection(adapter);5935 5936 netif_device_detach(adapter->netdev);5937 5938 be_cmd_reset_function(adapter);5939 5940 pci_disable_device(pdev);5941}5942 5943static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,5944 pci_channel_state_t state)5945{5946 struct be_adapter *adapter = pci_get_drvdata(pdev);5947 5948 dev_err(&adapter->pdev->dev, "EEH error detected\n");5949 5950 be_roce_dev_remove(adapter);5951 5952 if (!be_check_error(adapter, BE_ERROR_EEH)) {5953 be_set_error(adapter, BE_ERROR_EEH);5954 5955 be_cancel_err_detection(adapter);5956 5957 be_cleanup(adapter);5958 }5959 5960 if (state == pci_channel_io_perm_failure)5961 return PCI_ERS_RESULT_DISCONNECT;5962 5963 pci_disable_device(pdev);5964 5965 /* The error could cause the FW to trigger a flash debug dump.5966 * Resetting the card while flash dump is in progress5967 * can cause it not to recover; wait for it to finish.5968 * Wait only for first function as it is needed only once per5969 * adapter.5970 */5971 if (pdev->devfn == 0)5972 ssleep(30);5973 5974 return PCI_ERS_RESULT_NEED_RESET;5975}5976 5977static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)5978{5979 struct be_adapter *adapter = pci_get_drvdata(pdev);5980 int status;5981 5982 dev_info(&adapter->pdev->dev, "EEH reset\n");5983 5984 status = pci_enable_device(pdev);5985 if (status)5986 return PCI_ERS_RESULT_DISCONNECT;5987 5988 pci_set_master(pdev);5989 pci_restore_state(pdev);5990 5991 /* Check if card is ok and fw is ready */5992 dev_info(&adapter->pdev->dev,5993 "Waiting for FW to be ready after EEH reset\n");5994 status = be_fw_wait_ready(adapter);5995 if (status)5996 return PCI_ERS_RESULT_DISCONNECT;5997 5998 be_clear_error(adapter, BE_CLEAR_ALL);5999 return PCI_ERS_RESULT_RECOVERED;6000}6001 6002static void be_eeh_resume(struct pci_dev *pdev)6003{6004 int status = 0;6005 struct be_adapter *adapter = pci_get_drvdata(pdev);6006 6007 dev_info(&adapter->pdev->dev, "EEH resume\n");6008 6009 pci_save_state(pdev);6010 6011 status = be_resume(adapter);6012 if (status)6013 goto err;6014 6015 be_roce_dev_add(adapter);6016 6017 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);6018 return;6019err:6020 dev_err(&adapter->pdev->dev, "EEH resume failed\n");6021}6022 6023static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)6024{6025 struct be_adapter *adapter = pci_get_drvdata(pdev);6026 struct be_resources vft_res = {0};6027 int status;6028 6029 if (!num_vfs)6030 be_vf_clear(adapter);6031 6032 adapter->num_vfs = num_vfs;6033 6034 if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) {6035 dev_warn(&pdev->dev,6036 "Cannot disable VFs while they are assigned\n");6037 return -EBUSY;6038 }6039 6040 /* When the HW is in SRIOV capable configuration, the PF-pool resources6041 * are equally distributed across the max-number of VFs. The user may6042 * request only a subset of the max-vfs to be enabled.6043 * Based on num_vfs, redistribute the resources across num_vfs so that6044 * each VF will have access to more number of resources.6045 * This facility is not available in BE3 FW.6046 * Also, this is done by FW in Lancer chip.6047 */6048 if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) {6049 be_calculate_vf_res(adapter, adapter->num_vfs,6050 &vft_res);6051 status = be_cmd_set_sriov_config(adapter, adapter->pool_res,6052 adapter->num_vfs, &vft_res);6053 if (status)6054 dev_err(&pdev->dev,6055 "Failed to optimize SR-IOV resources\n");6056 }6057 6058 status = be_get_resources(adapter);6059 if (status)6060 return be_cmd_status(status);6061 6062 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */6063 rtnl_lock();6064 status = be_update_queues(adapter);6065 rtnl_unlock();6066 if (status)6067 return be_cmd_status(status);6068 6069 if (adapter->num_vfs)6070 status = be_vf_setup(adapter);6071 6072 if (!status)6073 return adapter->num_vfs;6074 6075 return 0;6076}6077 6078static const struct pci_error_handlers be_eeh_handlers = {6079 .error_detected = be_eeh_err_detected,6080 .slot_reset = be_eeh_reset,6081 .resume = be_eeh_resume,6082};6083 6084static SIMPLE_DEV_PM_OPS(be_pci_pm_ops, be_suspend, be_pci_resume);6085 6086static struct pci_driver be_driver = {6087 .name = DRV_NAME,6088 .id_table = be_dev_ids,6089 .probe = be_probe,6090 .remove = be_remove,6091 .driver.pm = &be_pci_pm_ops,6092 .shutdown = be_shutdown,6093 .sriov_configure = be_pci_sriov_configure,6094 .err_handler = &be_eeh_handlers6095};6096 6097static int __init be_init_module(void)6098{6099 int status;6100 6101 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&6102 rx_frag_size != 2048) {6103 printk(KERN_WARNING DRV_NAME6104 " : Module param rx_frag_size must be 2048/4096/8192."6105 " Using 2048\n");6106 rx_frag_size = 2048;6107 }6108 6109 if (num_vfs > 0) {6110 pr_info(DRV_NAME " : Module param num_vfs is obsolete.");6111 pr_info(DRV_NAME " : Use sysfs method to enable VFs\n");6112 }6113 6114 be_wq = create_singlethread_workqueue("be_wq");6115 if (!be_wq) {6116 pr_warn(DRV_NAME "workqueue creation failed\n");6117 return -1;6118 }6119 6120 be_err_recovery_workq =6121 create_singlethread_workqueue("be_err_recover");6122 if (!be_err_recovery_workq)6123 pr_warn(DRV_NAME "Could not create error recovery workqueue\n");6124 6125 status = pci_register_driver(&be_driver);6126 if (status) {6127 destroy_workqueue(be_wq);6128 be_destroy_err_recovery_workq();6129 }6130 return status;6131}6132module_init(be_init_module);6133 6134static void __exit be_exit_module(void)6135{6136 pci_unregister_driver(&be_driver);6137 6138 be_destroy_err_recovery_workq();6139 6140 if (be_wq)6141 destroy_workqueue(be_wq);6142}6143module_exit(be_exit_module);6144