1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2007 - 2018 Intel Corporation. */ 3 4 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 5 6 #include <linux/module.h> 7 #include <linux/types.h> 8 #include <linux/init.h> 9 #include <linux/bitops.h> 10 #include <linux/vmalloc.h> 11 #include <linux/pagemap.h> 12 #include <linux/netdevice.h> 13 #include <linux/ipv6.h> 14 #include <linux/slab.h> 15 #include <net/checksum.h> 16 #include <net/ip6_checksum.h> 17 #include <net/pkt_sched.h> 18 #include <net/pkt_cls.h> 19 #include <linux/net_tstamp.h> 20 #include <linux/mii.h> 21 #include <linux/ethtool.h> 22 #include <linux/if.h> 23 #include <linux/if_vlan.h> 24 #include <linux/pci.h> 25 #include <linux/delay.h> 26 #include <linux/interrupt.h> 27 #include <linux/ip.h> 28 #include <linux/tcp.h> 29 #include <linux/sctp.h> 30 #include <linux/if_ether.h> 31 #include <linux/aer.h> 32 #include <linux/prefetch.h> 33 #include <linux/bpf.h> 34 #include <linux/bpf_trace.h> 35 #include <linux/pm_runtime.h> 36 #include <linux/etherdevice.h> 37 #ifdef CONFIG_IGB_DCA 38 #include <linux/dca.h> 39 #endif 40 #include <linux/i2c.h> 41 #include "igb.h" 42 43 enum queue_mode { 44 QUEUE_MODE_STRICT_PRIORITY, 45 QUEUE_MODE_STREAM_RESERVATION, 46 }; 47 48 enum tx_queue_prio { 49 TX_QUEUE_PRIO_HIGH, 50 TX_QUEUE_PRIO_LOW, 51 }; 52 53 char igb_driver_name[] = "igb"; 54 static const char igb_driver_string[] = 55 "Intel(R) Gigabit Ethernet Network Driver"; 56 static const char igb_copyright[] = 57 "Copyright (c) 2007-2014 Intel Corporation."; 58 59 static const struct e1000_info *igb_info_tbl[] = { 60 [board_82575] = &e1000_82575_info, 61 }; 62 63 static const struct pci_device_id igb_pci_tbl[] = { 64 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_BACKPLANE_1GBPS) }, 65 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_SGMII) }, 66 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_BACKPLANE_2_5GBPS) }, 67 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I211_COPPER), board_82575 }, 68 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_COPPER), board_82575 }, 69 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_FIBER), board_82575 }, 70 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SERDES), board_82575 }, 71 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SGMII), board_82575 }, 72 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_COPPER_FLASHLESS), board_82575 }, 73 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SERDES_FLASHLESS), board_82575 }, 74 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_COPPER), board_82575 }, 75 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_FIBER), board_82575 }, 76 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SERDES), board_82575 }, 77 { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SGMII), board_82575 }, 78 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER), board_82575 }, 79 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_FIBER), board_82575 }, 80 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_QUAD_FIBER), board_82575 }, 81 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SERDES), board_82575 }, 82 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SGMII), board_82575 }, 83 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER_DUAL), board_82575 }, 84 { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SGMII), board_82575 }, 85 { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SERDES), board_82575 }, 86 { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_BACKPLANE), board_82575 }, 87 { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SFP), board_82575 }, 88 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 }, 89 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS), board_82575 }, 90 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS_SERDES), board_82575 }, 91 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, 92 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, 93 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES_QUAD), board_82575 }, 94 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER_ET2), board_82575 }, 95 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 }, 96 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, 97 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, 98 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, 99 /* required last entry */ 100 {0, } 101 }; 102 103 MODULE_DEVICE_TABLE(pci, igb_pci_tbl); 104 105 static int igb_setup_all_tx_resources(struct igb_adapter *); 106 static int igb_setup_all_rx_resources(struct igb_adapter *); 107 static void igb_free_all_tx_resources(struct igb_adapter *); 108 static void igb_free_all_rx_resources(struct igb_adapter *); 109 static void igb_setup_mrqc(struct igb_adapter *); 110 static int igb_probe(struct pci_dev *, const struct pci_device_id *); 111 static void igb_remove(struct pci_dev *pdev); 112 static int igb_sw_init(struct igb_adapter *); 113 int igb_open(struct net_device *); 114 int igb_close(struct net_device *); 115 static void igb_configure(struct igb_adapter *); 116 static void igb_configure_tx(struct igb_adapter *); 117 static void igb_configure_rx(struct igb_adapter *); 118 static void igb_clean_all_tx_rings(struct igb_adapter *); 119 static void igb_clean_all_rx_rings(struct igb_adapter *); 120 static void igb_clean_tx_ring(struct igb_ring *); 121 static void igb_clean_rx_ring(struct igb_ring *); 122 static void igb_set_rx_mode(struct net_device *); 123 static void igb_update_phy_info(struct timer_list *); 124 static void igb_watchdog(struct timer_list *); 125 static void igb_watchdog_task(struct work_struct *); 126 static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, struct net_device *); 127 static void igb_get_stats64(struct net_device *dev, 128 struct rtnl_link_stats64 *stats); 129 static int igb_change_mtu(struct net_device *, int); 130 static int igb_set_mac(struct net_device *, void *); 131 static void igb_set_uta(struct igb_adapter *adapter, bool set); 132 static irqreturn_t igb_intr(int irq, void *); 133 static irqreturn_t igb_intr_msi(int irq, void *); 134 static irqreturn_t igb_msix_other(int irq, void *); 135 static irqreturn_t igb_msix_ring(int irq, void *); 136 #ifdef CONFIG_IGB_DCA 137 static void igb_update_dca(struct igb_q_vector *); 138 static void igb_setup_dca(struct igb_adapter *); 139 #endif /* CONFIG_IGB_DCA */ 140 static int igb_poll(struct napi_struct *, int); 141 static bool igb_clean_tx_irq(struct igb_q_vector *, int); 142 static int igb_clean_rx_irq(struct igb_q_vector *, int); 143 static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); 144 static void igb_tx_timeout(struct net_device *, unsigned int txqueue); 145 static void igb_reset_task(struct work_struct *); 146 static void igb_vlan_mode(struct net_device *netdev, 147 netdev_features_t features); 148 static int igb_vlan_rx_add_vid(struct net_device *, __be16, u16); 149 static int igb_vlan_rx_kill_vid(struct net_device *, __be16, u16); 150 static void igb_restore_vlan(struct igb_adapter *); 151 static void igb_rar_set_index(struct igb_adapter *, u32); 152 static void igb_ping_all_vfs(struct igb_adapter *); 153 static void igb_msg_task(struct igb_adapter *); 154 static void igb_vmm_control(struct igb_adapter *); 155 static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *); 156 static void igb_flush_mac_table(struct igb_adapter *); 157 static int igb_available_rars(struct igb_adapter *, u8); 158 static void igb_set_default_mac_filter(struct igb_adapter *); 159 static int igb_uc_sync(struct net_device *, const unsigned char *); 160 static int igb_uc_unsync(struct net_device *, const unsigned char *); 161 static void igb_restore_vf_multicasts(struct igb_adapter *adapter); 162 static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac); 163 static int igb_ndo_set_vf_vlan(struct net_device *netdev, 164 int vf, u16 vlan, u8 qos, __be16 vlan_proto); 165 static int igb_ndo_set_vf_bw(struct net_device *, int, int, int); 166 static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, 167 bool setting); 168 static int igb_ndo_set_vf_trust(struct net_device *netdev, int vf, 169 bool setting); 170 static int igb_ndo_get_vf_config(struct net_device *netdev, int vf, 171 struct ifla_vf_info *ivi); 172 static void igb_check_vf_rate_limit(struct igb_adapter *); 173 static void igb_nfc_filter_exit(struct igb_adapter *adapter); 174 static void igb_nfc_filter_restore(struct igb_adapter *adapter); 175 176 #ifdef CONFIG_PCI_IOV 177 static int igb_vf_configure(struct igb_adapter *adapter, int vf); 178 static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs); 179 static int igb_disable_sriov(struct pci_dev *dev); 180 static int igb_pci_disable_sriov(struct pci_dev *dev); 181 #endif 182 183 static int igb_suspend(struct device *); 184 static int igb_resume(struct device *); 185 static int igb_runtime_suspend(struct device *dev); 186 static int igb_runtime_resume(struct device *dev); 187 static int igb_runtime_idle(struct device *dev); 188 static const struct dev_pm_ops igb_pm_ops = { 189 SET_SYSTEM_SLEEP_PM_OPS(igb_suspend, igb_resume) 190 SET_RUNTIME_PM_OPS(igb_runtime_suspend, igb_runtime_resume, 191 igb_runtime_idle) 192 }; 193 static void igb_shutdown(struct pci_dev *); 194 static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs); 195 #ifdef CONFIG_IGB_DCA 196 static int igb_notify_dca(struct notifier_block *, unsigned long, void *); 197 static struct notifier_block dca_notifier = { 198 .notifier_call = igb_notify_dca, 199 .next = NULL, 200 .priority = 0 201 }; 202 #endif 203 #ifdef CONFIG_PCI_IOV 204 static unsigned int max_vfs; 205 module_param(max_vfs, uint, 0); 206 MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate per physical function"); 207 #endif /* CONFIG_PCI_IOV */ 208 209 static pci_ers_result_t igb_io_error_detected(struct pci_dev *, 210 pci_channel_state_t); 211 static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); 212 static void igb_io_resume(struct pci_dev *); 213 214 static const struct pci_error_handlers igb_err_handler = { 215 .error_detected = igb_io_error_detected, 216 .slot_reset = igb_io_slot_reset, 217 .resume = igb_io_resume, 218 }; 219 220 static void igb_init_dmac(struct igb_adapter *adapter, u32 pba); 221 222 static struct pci_driver igb_driver = { 223 .name = igb_driver_name, 224 .id_table = igb_pci_tbl, 225 .probe = igb_probe, 226 .remove = igb_remove, 227 #ifdef CONFIG_PM 228 .driver.pm = &igb_pm_ops, 229 #endif 230 .shutdown = igb_shutdown, 231 .sriov_configure = igb_pci_sriov_configure, 232 .err_handler = &igb_err_handler 233 }; 234 235 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); 236 MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); 237 MODULE_LICENSE("GPL v2"); 238 239 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) 240 static int debug = -1; 241 module_param(debug, int, 0); 242 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); 243 244 struct igb_reg_info { 245 u32 ofs; 246 char *name; 247 }; 248 249 static const struct igb_reg_info igb_reg_info_tbl[] = { 250 251 /* General Registers */ 252 {E1000_CTRL, "CTRL"}, 253 {E1000_STATUS, "STATUS"}, 254 {E1000_CTRL_EXT, "CTRL_EXT"}, 255 256 /* Interrupt Registers */ 257 {E1000_ICR, "ICR"}, 258 259 /* RX Registers */ 260 {E1000_RCTL, "RCTL"}, 261 {E1000_RDLEN(0), "RDLEN"}, 262 {E1000_RDH(0), "RDH"}, 263 {E1000_RDT(0), "RDT"}, 264 {E1000_RXDCTL(0), "RXDCTL"}, 265 {E1000_RDBAL(0), "RDBAL"}, 266 {E1000_RDBAH(0), "RDBAH"}, 267 268 /* TX Registers */ 269 {E1000_TCTL, "TCTL"}, 270 {E1000_TDBAL(0), "TDBAL"}, 271 {E1000_TDBAH(0), "TDBAH"}, 272 {E1000_TDLEN(0), "TDLEN"}, 273 {E1000_TDH(0), "TDH"}, 274 {E1000_TDT(0), "TDT"}, 275 {E1000_TXDCTL(0), "TXDCTL"}, 276 {E1000_TDFH, "TDFH"}, 277 {E1000_TDFT, "TDFT"}, 278 {E1000_TDFHS, "TDFHS"}, 279 {E1000_TDFPC, "TDFPC"}, 280 281 /* List Terminator */ 282 {} 283 }; 284 285 /* igb_regdump - register printout routine */ 286 static void igb_regdump(struct e1000_hw *hw, struct igb_reg_info *reginfo) 287 { 288 int n = 0; 289 char rname[16]; 290 u32 regs[8]; 291 292 switch (reginfo->ofs) { 293 case E1000_RDLEN(0): 294 for (n = 0; n < 4; n++) 295 regs[n] = rd32(E1000_RDLEN(n)); 296 break; 297 case E1000_RDH(0): 298 for (n = 0; n < 4; n++) 299 regs[n] = rd32(E1000_RDH(n)); 300 break; 301 case E1000_RDT(0): 302 for (n = 0; n < 4; n++) 303 regs[n] = rd32(E1000_RDT(n)); 304 break; 305 case E1000_RXDCTL(0): 306 for (n = 0; n < 4; n++) 307 regs[n] = rd32(E1000_RXDCTL(n)); 308 break; 309 case E1000_RDBAL(0): 310 for (n = 0; n < 4; n++) 311 regs[n] = rd32(E1000_RDBAL(n)); 312 break; 313 case E1000_RDBAH(0): 314 for (n = 0; n < 4; n++) 315 regs[n] = rd32(E1000_RDBAH(n)); 316 break; 317 case E1000_TDBAL(0): 318 for (n = 0; n < 4; n++) 319 regs[n] = rd32(E1000_TDBAL(n)); 320 break; 321 case E1000_TDBAH(0): 322 for (n = 0; n < 4; n++) 323 regs[n] = rd32(E1000_TDBAH(n)); 324 break; 325 case E1000_TDLEN(0): 326 for (n = 0; n < 4; n++) 327 regs[n] = rd32(E1000_TDLEN(n)); 328 break; 329 case E1000_TDH(0): 330 for (n = 0; n < 4; n++) 331 regs[n] = rd32(E1000_TDH(n)); 332 break; 333 case E1000_TDT(0): 334 for (n = 0; n < 4; n++) 335 regs[n] = rd32(E1000_TDT(n)); 336 break; 337 case E1000_TXDCTL(0): 338 for (n = 0; n < 4; n++) 339 regs[n] = rd32(E1000_TXDCTL(n)); 340 break; 341 default: 342 pr_info("%-15s %08x\n", reginfo->name, rd32(reginfo->ofs)); 343 return; 344 } 345 346 snprintf(rname, 16, "%s%s", reginfo->name, "[0-3]"); 347 pr_info("%-15s %08x %08x %08x %08x\n", rname, regs[0], regs[1], 348 regs[2], regs[3]); 349 } 350 351 /* igb_dump - Print registers, Tx-rings and Rx-rings */ 352 static void igb_dump(struct igb_adapter *adapter) 353 { 354 struct net_device *netdev = adapter->netdev; 355 struct e1000_hw *hw = &adapter->hw; 356 struct igb_reg_info *reginfo; 357 struct igb_ring *tx_ring; 358 union e1000_adv_tx_desc *tx_desc; 359 struct my_u0 { __le64 a; __le64 b; } *u0; 360 struct igb_ring *rx_ring; 361 union e1000_adv_rx_desc *rx_desc; 362 u32 staterr; 363 u16 i, n; 364 365 if (!netif_msg_hw(adapter)) 366 return; 367 368 /* Print netdevice Info */ 369 if (netdev) { 370 dev_info(&adapter->pdev->dev, "Net device Info\n"); 371 pr_info("Device Name state trans_start\n"); 372 pr_info("%-15s %016lX %016lX\n", netdev->name, 373 netdev->state, dev_trans_start(netdev)); 374 } 375 376 /* Print Registers */ 377 dev_info(&adapter->pdev->dev, "Register Dump\n"); 378 pr_info(" Register Name Value\n"); 379 for (reginfo = (struct igb_reg_info *)igb_reg_info_tbl; 380 reginfo->name; reginfo++) { 381 igb_regdump(hw, reginfo); 382 } 383 384 /* Print TX Ring Summary */ 385 if (!netdev || !netif_running(netdev)) 386 goto exit; 387 388 dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); 389 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); 390 for (n = 0; n < adapter->num_tx_queues; n++) { 391 struct igb_tx_buffer *buffer_info; 392 tx_ring = adapter->tx_ring[n]; 393 buffer_info = &tx_ring->tx_buffer_info[tx_ring->next_to_clean]; 394 pr_info(" %5d %5X %5X %016llX %04X %p %016llX\n", 395 n, tx_ring->next_to_use, tx_ring->next_to_clean, 396 (u64)dma_unmap_addr(buffer_info, dma), 397 dma_unmap_len(buffer_info, len), 398 buffer_info->next_to_watch, 399 (u64)buffer_info->time_stamp); 400 } 401 402 /* Print TX Rings */ 403 if (!netif_msg_tx_done(adapter)) 404 goto rx_ring_summary; 405 406 dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); 407 408 /* Transmit Descriptor Formats 409 * 410 * Advanced Transmit Descriptor 411 * +--------------------------------------------------------------+ 412 * 0 | Buffer Address [63:0] | 413 * +--------------------------------------------------------------+ 414 * 8 | PAYLEN | PORTS |CC|IDX | STA | DCMD |DTYP|MAC|RSV| DTALEN | 415 * +--------------------------------------------------------------+ 416 * 63 46 45 40 39 38 36 35 32 31 24 15 0 417 */ 418 419 for (n = 0; n < adapter->num_tx_queues; n++) { 420 tx_ring = adapter->tx_ring[n]; 421 pr_info("------------------------------------\n"); 422 pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index); 423 pr_info("------------------------------------\n"); 424 pr_info("T [desc] [address 63:0 ] [PlPOCIStDDM Ln] [bi->dma ] leng ntw timestamp bi->skb\n"); 425 426 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { 427 const char *next_desc; 428 struct igb_tx_buffer *buffer_info; 429 tx_desc = IGB_TX_DESC(tx_ring, i); 430 buffer_info = &tx_ring->tx_buffer_info[i]; 431 u0 = (struct my_u0 *)tx_desc; 432 if (i == tx_ring->next_to_use && 433 i == tx_ring->next_to_clean) 434 next_desc = " NTC/U"; 435 else if (i == tx_ring->next_to_use) 436 next_desc = " NTU"; 437 else if (i == tx_ring->next_to_clean) 438 next_desc = " NTC"; 439 else 440 next_desc = ""; 441 442 pr_info("T [0x%03X] %016llX %016llX %016llX %04X %p %016llX %p%s\n", 443 i, le64_to_cpu(u0->a), 444 le64_to_cpu(u0->b), 445 (u64)dma_unmap_addr(buffer_info, dma), 446 dma_unmap_len(buffer_info, len), 447 buffer_info->next_to_watch, 448 (u64)buffer_info->time_stamp, 449 buffer_info->skb, next_desc); 450 451 if (netif_msg_pktdata(adapter) && buffer_info->skb) 452 print_hex_dump(KERN_INFO, "", 453 DUMP_PREFIX_ADDRESS, 454 16, 1, buffer_info->skb->data, 455 dma_unmap_len(buffer_info, len), 456 true); 457 } 458 } 459 460 /* Print RX Rings Summary */ 461 rx_ring_summary: 462 dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); 463 pr_info("Queue [NTU] [NTC]\n"); 464 for (n = 0; n < adapter->num_rx_queues; n++) { 465 rx_ring = adapter->rx_ring[n]; 466 pr_info(" %5d %5X %5X\n", 467 n, rx_ring->next_to_use, rx_ring->next_to_clean); 468 } 469 470 /* Print RX Rings */ 471 if (!netif_msg_rx_status(adapter)) 472 goto exit; 473 474 dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); 475 476 /* Advanced Receive Descriptor (Read) Format 477 * 63 1 0 478 * +-----------------------------------------------------+ 479 * 0 | Packet Buffer Address [63:1] |A0/NSE| 480 * +----------------------------------------------+------+ 481 * 8 | Header Buffer Address [63:1] | DD | 482 * +-----------------------------------------------------+ 483 * 484 * 485 * Advanced Receive Descriptor (Write-Back) Format 486 * 487 * 63 48 47 32 31 30 21 20 17 16 4 3 0 488 * +------------------------------------------------------+ 489 * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS | 490 * | Checksum Ident | | | | Type | Type | 491 * +------------------------------------------------------+ 492 * 8 | VLAN Tag | Length | Extended Error | Extended Status | 493 * +------------------------------------------------------+ 494 * 63 48 47 32 31 20 19 0 495 */ 496 497 for (n = 0; n < adapter->num_rx_queues; n++) { 498 rx_ring = adapter->rx_ring[n]; 499 pr_info("------------------------------------\n"); 500 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); 501 pr_info("------------------------------------\n"); 502 pr_info("R [desc] [ PktBuf A0] [ HeadBuf DD] [bi->dma ] [bi->skb] <-- Adv Rx Read format\n"); 503 pr_info("RWB[desc] [PcsmIpSHl PtRs] [vl er S cks ln] ---------------- [bi->skb] <-- Adv Rx Write-Back format\n"); 504 505 for (i = 0; i < rx_ring->count; i++) { 506 const char *next_desc; 507 struct igb_rx_buffer *buffer_info; 508 buffer_info = &rx_ring->rx_buffer_info[i]; 509 rx_desc = IGB_RX_DESC(rx_ring, i); 510 u0 = (struct my_u0 *)rx_desc; 511 staterr = le32_to_cpu(rx_desc->wb.upper.status_error); 512 513 if (i == rx_ring->next_to_use) 514 next_desc = " NTU"; 515 else if (i == rx_ring->next_to_clean) 516 next_desc = " NTC"; 517 else 518 next_desc = ""; 519 520 if (staterr & E1000_RXD_STAT_DD) { 521 /* Descriptor Done */ 522 pr_info("%s[0x%03X] %016llX %016llX ---------------- %s\n", 523 "RWB", i, 524 le64_to_cpu(u0->a), 525 le64_to_cpu(u0->b), 526 next_desc); 527 } else { 528 pr_info("%s[0x%03X] %016llX %016llX %016llX %s\n", 529 "R ", i, 530 le64_to_cpu(u0->a), 531 le64_to_cpu(u0->b), 532 (u64)buffer_info->dma, 533 next_desc); 534 535 if (netif_msg_pktdata(adapter) && 536 buffer_info->dma && buffer_info->page) { 537 print_hex_dump(KERN_INFO, "", 538 DUMP_PREFIX_ADDRESS, 539 16, 1, 540 page_address(buffer_info->page) + 541 buffer_info->page_offset, 542 igb_rx_bufsz(rx_ring), true); 543 } 544 } 545 } 546 } 547 548 exit: 549 return; 550 } 551 552 /** 553 * igb_get_i2c_data - Reads the I2C SDA data bit 554 * @data: opaque pointer to adapter struct 555 * 556 * Returns the I2C data bit value 557 **/ 558 static int igb_get_i2c_data(void *data) 559 { 560 struct igb_adapter *adapter = (struct igb_adapter *)data; 561 struct e1000_hw *hw = &adapter->hw; 562 s32 i2cctl = rd32(E1000_I2CPARAMS); 563 564 return !!(i2cctl & E1000_I2C_DATA_IN); 565 } 566 567 /** 568 * igb_set_i2c_data - Sets the I2C data bit 569 * @data: pointer to hardware structure 570 * @state: I2C data value (0 or 1) to set 571 * 572 * Sets the I2C data bit 573 **/ 574 static void igb_set_i2c_data(void *data, int state) 575 { 576 struct igb_adapter *adapter = (struct igb_adapter *)data; 577 struct e1000_hw *hw = &adapter->hw; 578 s32 i2cctl = rd32(E1000_I2CPARAMS); 579 580 if (state) { 581 i2cctl |= E1000_I2C_DATA_OUT | E1000_I2C_DATA_OE_N; 582 } else { 583 i2cctl &= ~E1000_I2C_DATA_OE_N; 584 i2cctl &= ~E1000_I2C_DATA_OUT; 585 } 586 587 wr32(E1000_I2CPARAMS, i2cctl); 588 wrfl(); 589 } 590 591 /** 592 * igb_set_i2c_clk - Sets the I2C SCL clock 593 * @data: pointer to hardware structure 594 * @state: state to set clock 595 * 596 * Sets the I2C clock line to state 597 **/ 598 static void igb_set_i2c_clk(void *data, int state) 599 { 600 struct igb_adapter *adapter = (struct igb_adapter *)data; 601 struct e1000_hw *hw = &adapter->hw; 602 s32 i2cctl = rd32(E1000_I2CPARAMS); 603 604 if (state) { 605 i2cctl |= E1000_I2C_CLK_OUT | E1000_I2C_CLK_OE_N; 606 } else { 607 i2cctl &= ~E1000_I2C_CLK_OUT; 608 i2cctl &= ~E1000_I2C_CLK_OE_N; 609 } 610 wr32(E1000_I2CPARAMS, i2cctl); 611 wrfl(); 612 } 613 614 /** 615 * igb_get_i2c_clk - Gets the I2C SCL clock state 616 * @data: pointer to hardware structure 617 * 618 * Gets the I2C clock state 619 **/ 620 static int igb_get_i2c_clk(void *data) 621 { 622 struct igb_adapter *adapter = (struct igb_adapter *)data; 623 struct e1000_hw *hw = &adapter->hw; 624 s32 i2cctl = rd32(E1000_I2CPARAMS); 625 626 return !!(i2cctl & E1000_I2C_CLK_IN); 627 } 628 629 static const struct i2c_algo_bit_data igb_i2c_algo = { 630 .setsda = igb_set_i2c_data, 631 .setscl = igb_set_i2c_clk, 632 .getsda = igb_get_i2c_data, 633 .getscl = igb_get_i2c_clk, 634 .udelay = 5, 635 .timeout = 20, 636 }; 637 638 /** 639 * igb_get_hw_dev - return device 640 * @hw: pointer to hardware structure 641 * 642 * used by hardware layer to print debugging information 643 **/ 644 struct net_device *igb_get_hw_dev(struct e1000_hw *hw) 645 { 646 struct igb_adapter *adapter = hw->back; 647 return adapter->netdev; 648 } 649 650 /** 651 * igb_init_module - Driver Registration Routine 652 * 653 * igb_init_module is the first routine called when the driver is 654 * loaded. All it does is register with the PCI subsystem. 655 **/ 656 static int __init igb_init_module(void) 657 { 658 int ret; 659 660 pr_info("%s\n", igb_driver_string); 661 pr_info("%s\n", igb_copyright); 662 663 #ifdef CONFIG_IGB_DCA 664 dca_register_notify(&dca_notifier); 665 #endif 666 ret = pci_register_driver(&igb_driver); 667 return ret; 668 } 669 670 module_init(igb_init_module); 671 672 /** 673 * igb_exit_module - Driver Exit Cleanup Routine 674 * 675 * igb_exit_module is called just before the driver is removed 676 * from memory. 677 **/ 678 static void __exit igb_exit_module(void) 679 { 680 #ifdef CONFIG_IGB_DCA 681 dca_unregister_notify(&dca_notifier); 682 #endif 683 pci_unregister_driver(&igb_driver); 684 } 685 686 module_exit(igb_exit_module); 687 688 #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) 689 /** 690 * igb_cache_ring_register - Descriptor ring to register mapping 691 * @adapter: board private structure to initialize 692 * 693 * Once we know the feature-set enabled for the device, we'll cache 694 * the register offset the descriptor ring is assigned to. 695 **/ 696 static void igb_cache_ring_register(struct igb_adapter *adapter) 697 { 698 int i = 0, j = 0; 699 u32 rbase_offset = adapter->vfs_allocated_count; 700 701 switch (adapter->hw.mac.type) { 702 case e1000_82576: 703 /* The queues are allocated for virtualization such that VF 0 704 * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. 705 * In order to avoid collision we start at the first free queue 706 * and continue consuming queues in the same sequence 707 */ 708 if (adapter->vfs_allocated_count) { 709 for (; i < adapter->rss_queues; i++) 710 adapter->rx_ring[i]->reg_idx = rbase_offset + 711 Q_IDX_82576(i); 712 } 713 fallthrough; 714 case e1000_82575: 715 case e1000_82580: 716 case e1000_i350: 717 case e1000_i354: 718 case e1000_i210: 719 case e1000_i211: 720 default: 721 for (; i < adapter->num_rx_queues; i++) 722 adapter->rx_ring[i]->reg_idx = rbase_offset + i; 723 for (; j < adapter->num_tx_queues; j++) 724 adapter->tx_ring[j]->reg_idx = rbase_offset + j; 725 break; 726 } 727 } 728 729 u32 igb_rd32(struct e1000_hw *hw, u32 reg) 730 { 731 struct igb_adapter *igb = container_of(hw, struct igb_adapter, hw); 732 u8 __iomem *hw_addr = READ_ONCE(hw->hw_addr); 733 u32 value = 0; 734 735 if (E1000_REMOVED(hw_addr)) 736 return ~value; 737 738 value = readl(&hw_addr[reg]); 739 740 /* reads should not return all F's */ 741 if (!(~value) && (!reg || !(~readl(hw_addr)))) { 742 struct net_device *netdev = igb->netdev; 743 hw->hw_addr = NULL; 744 netdev_err(netdev, "PCIe link lost\n"); 745 WARN(pci_device_is_present(igb->pdev), 746 "igb: Failed to read reg 0x%x!\n", reg); 747 } 748 749 return value; 750 } 751 752 /** 753 * igb_write_ivar - configure ivar for given MSI-X vector 754 * @hw: pointer to the HW structure 755 * @msix_vector: vector number we are allocating to a given ring 756 * @index: row index of IVAR register to write within IVAR table 757 * @offset: column offset of in IVAR, should be multiple of 8 758 * 759 * This function is intended to handle the writing of the IVAR register 760 * for adapters 82576 and newer. The IVAR table consists of 2 columns, 761 * each containing an cause allocation for an Rx and Tx ring, and a 762 * variable number of rows depending on the number of queues supported. 763 **/ 764 static void igb_write_ivar(struct e1000_hw *hw, int msix_vector, 765 int index, int offset) 766 { 767 u32 ivar = array_rd32(E1000_IVAR0, index); 768 769 /* clear any bits that are currently set */ 770 ivar &= ~((u32)0xFF << offset); 771 772 /* write vector and valid bit */ 773 ivar |= (msix_vector | E1000_IVAR_VALID) << offset; 774 775 array_wr32(E1000_IVAR0, index, ivar); 776 } 777 778 #define IGB_N0_QUEUE -1 779 static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector) 780 { 781 struct igb_adapter *adapter = q_vector->adapter; 782 struct e1000_hw *hw = &adapter->hw; 783 int rx_queue = IGB_N0_QUEUE; 784 int tx_queue = IGB_N0_QUEUE; 785 u32 msixbm = 0; 786 787 if (q_vector->rx.ring) 788 rx_queue = q_vector->rx.ring->reg_idx; 789 if (q_vector->tx.ring) 790 tx_queue = q_vector->tx.ring->reg_idx; 791 792 switch (hw->mac.type) { 793 case e1000_82575: 794 /* The 82575 assigns vectors using a bitmask, which matches the 795 * bitmask for the EICR/EIMS/EIMC registers. To assign one 796 * or more queues to a vector, we write the appropriate bits 797 * into the MSIXBM register for that vector. 798 */ 799 if (rx_queue > IGB_N0_QUEUE) 800 msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; 801 if (tx_queue > IGB_N0_QUEUE) 802 msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; 803 if (!(adapter->flags & IGB_FLAG_HAS_MSIX) && msix_vector == 0) 804 msixbm |= E1000_EIMS_OTHER; 805 array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); 806 q_vector->eims_value = msixbm; 807 break; 808 case e1000_82576: 809 /* 82576 uses a table that essentially consists of 2 columns 810 * with 8 rows. The ordering is column-major so we use the 811 * lower 3 bits as the row index, and the 4th bit as the 812 * column offset. 813 */ 814 if (rx_queue > IGB_N0_QUEUE) 815 igb_write_ivar(hw, msix_vector, 816 rx_queue & 0x7, 817 (rx_queue & 0x8) << 1); 818 if (tx_queue > IGB_N0_QUEUE) 819 igb_write_ivar(hw, msix_vector, 820 tx_queue & 0x7, 821 ((tx_queue & 0x8) << 1) + 8); 822 q_vector->eims_value = BIT(msix_vector); 823 break; 824 case e1000_82580: 825 case e1000_i350: 826 case e1000_i354: 827 case e1000_i210: 828 case e1000_i211: 829 /* On 82580 and newer adapters the scheme is similar to 82576 830 * however instead of ordering column-major we have things 831 * ordered row-major. So we traverse the table by using 832 * bit 0 as the column offset, and the remaining bits as the 833 * row index. 834 */ 835 if (rx_queue > IGB_N0_QUEUE) 836 igb_write_ivar(hw, msix_vector, 837 rx_queue >> 1, 838 (rx_queue & 0x1) << 4); 839 if (tx_queue > IGB_N0_QUEUE) 840 igb_write_ivar(hw, msix_vector, 841 tx_queue >> 1, 842 ((tx_queue & 0x1) << 4) + 8); 843 q_vector->eims_value = BIT(msix_vector); 844 break; 845 default: 846 BUG(); 847 break; 848 } 849 850 /* add q_vector eims value to global eims_enable_mask */ 851 adapter->eims_enable_mask |= q_vector->eims_value; 852 853 /* configure q_vector to set itr on first interrupt */ 854 q_vector->set_itr = 1; 855 } 856 857 /** 858 * igb_configure_msix - Configure MSI-X hardware 859 * @adapter: board private structure to initialize 860 * 861 * igb_configure_msix sets up the hardware to properly 862 * generate MSI-X interrupts. 863 **/ 864 static void igb_configure_msix(struct igb_adapter *adapter) 865 { 866 u32 tmp; 867 int i, vector = 0; 868 struct e1000_hw *hw = &adapter->hw; 869 870 adapter->eims_enable_mask = 0; 871 872 /* set vector for other causes, i.e. link changes */ 873 switch (hw->mac.type) { 874 case e1000_82575: 875 tmp = rd32(E1000_CTRL_EXT); 876 /* enable MSI-X PBA support*/ 877 tmp |= E1000_CTRL_EXT_PBA_CLR; 878 879 /* Auto-Mask interrupts upon ICR read. */ 880 tmp |= E1000_CTRL_EXT_EIAME; 881 tmp |= E1000_CTRL_EXT_IRCA; 882 883 wr32(E1000_CTRL_EXT, tmp); 884 885 /* enable msix_other interrupt */ 886 array_wr32(E1000_MSIXBM(0), vector++, E1000_EIMS_OTHER); 887 adapter->eims_other = E1000_EIMS_OTHER; 888 889 break; 890 891 case e1000_82576: 892 case e1000_82580: 893 case e1000_i350: 894 case e1000_i354: 895 case e1000_i210: 896 case e1000_i211: 897 /* Turn on MSI-X capability first, or our settings 898 * won't stick. And it will take days to debug. 899 */ 900 wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | 901 E1000_GPIE_PBA | E1000_GPIE_EIAME | 902 E1000_GPIE_NSICR); 903 904 /* enable msix_other interrupt */ 905 adapter->eims_other = BIT(vector); 906 tmp = (vector++ | E1000_IVAR_VALID) << 8; 907 908 wr32(E1000_IVAR_MISC, tmp); 909 break; 910 default: 911 /* do nothing, since nothing else supports MSI-X */ 912 break; 913 } /* switch (hw->mac.type) */ 914 915 adapter->eims_enable_mask |= adapter->eims_other; 916 917 for (i = 0; i < adapter->num_q_vectors; i++) 918 igb_assign_vector(adapter->q_vector[i], vector++); 919 920 wrfl(); 921 } 922 923 /** 924 * igb_request_msix - Initialize MSI-X interrupts 925 * @adapter: board private structure to initialize 926 * 927 * igb_request_msix allocates MSI-X vectors and requests interrupts from the 928 * kernel. 929 **/ 930 static int igb_request_msix(struct igb_adapter *adapter) 931 { 932 unsigned int num_q_vectors = adapter->num_q_vectors; 933 struct net_device *netdev = adapter->netdev; 934 int i, err = 0, vector = 0, free_vector = 0; 935 936 err = request_irq(adapter->msix_entries[vector].vector, 937 igb_msix_other, 0, netdev->name, adapter); 938 if (err) 939 goto err_out; 940 941 if (num_q_vectors > MAX_Q_VECTORS) { 942 num_q_vectors = MAX_Q_VECTORS; 943 dev_warn(&adapter->pdev->dev, 944 "The number of queue vectors (%d) is higher than max allowed (%d)\n", 945 adapter->num_q_vectors, MAX_Q_VECTORS); 946 } 947 for (i = 0; i < num_q_vectors; i++) { 948 struct igb_q_vector *q_vector = adapter->q_vector[i]; 949 950 vector++; 951 952 q_vector->itr_register = adapter->io_addr + E1000_EITR(vector); 953 954 if (q_vector->rx.ring && q_vector->tx.ring) 955 sprintf(q_vector->name, "%s-TxRx-%u", netdev->name, 956 q_vector->rx.ring->queue_index); 957 else if (q_vector->tx.ring) 958 sprintf(q_vector->name, "%s-tx-%u", netdev->name, 959 q_vector->tx.ring->queue_index); 960 else if (q_vector->rx.ring) 961 sprintf(q_vector->name, "%s-rx-%u", netdev->name, 962 q_vector->rx.ring->queue_index); 963 else 964 sprintf(q_vector->name, "%s-unused", netdev->name); 965 966 err = request_irq(adapter->msix_entries[vector].vector, 967 igb_msix_ring, 0, q_vector->name, 968 q_vector); 969 if (err) 970 goto err_free; 971 } 972 973 igb_configure_msix(adapter); 974 return 0; 975 976 err_free: 977 /* free already assigned IRQs */ 978 free_irq(adapter->msix_entries[free_vector++].vector, adapter); 979 980 vector--; 981 for (i = 0; i < vector; i++) { 982 free_irq(adapter->msix_entries[free_vector++].vector, 983 adapter->q_vector[i]); 984 } 985 err_out: 986 return err; 987 } 988 989 /** 990 * igb_free_q_vector - Free memory allocated for specific interrupt vector 991 * @adapter: board private structure to initialize 992 * @v_idx: Index of vector to be freed 993 * 994 * This function frees the memory allocated to the q_vector. 995 **/ 996 static void igb_free_q_vector(struct igb_adapter *adapter, int v_idx) 997 { 998 struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; 999 1000 adapter->q_vector[v_idx] = NULL; 1001 1002 /* igb_get_stats64() might access the rings on this vector, 1003 * we must wait a grace period before freeing it. 1004 */ 1005 if (q_vector) 1006 kfree_rcu(q_vector, rcu); 1007 } 1008 1009 /** 1010 * igb_reset_q_vector - Reset config for interrupt vector 1011 * @adapter: board private structure to initialize 1012 * @v_idx: Index of vector to be reset 1013 * 1014 * If NAPI is enabled it will delete any references to the 1015 * NAPI struct. This is preparation for igb_free_q_vector. 1016 **/ 1017 static void igb_reset_q_vector(struct igb_adapter *adapter, int v_idx) 1018 { 1019 struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; 1020 1021 /* Coming from igb_set_interrupt_capability, the vectors are not yet 1022 * allocated. So, q_vector is NULL so we should stop here. 1023 */ 1024 if (!q_vector) 1025 return; 1026 1027 if (q_vector->tx.ring) 1028 adapter->tx_ring[q_vector->tx.ring->queue_index] = NULL; 1029 1030 if (q_vector->rx.ring) 1031 adapter->rx_ring[q_vector->rx.ring->queue_index] = NULL; 1032 1033 netif_napi_del(&q_vector->napi); 1034 1035 } 1036 1037 static void igb_reset_interrupt_capability(struct igb_adapter *adapter) 1038 { 1039 int v_idx = adapter->num_q_vectors; 1040 1041 if (adapter->flags & IGB_FLAG_HAS_MSIX) 1042 pci_disable_msix(adapter->pdev); 1043 else if (adapter->flags & IGB_FLAG_HAS_MSI) 1044 pci_disable_msi(adapter->pdev); 1045 1046 while (v_idx--) 1047 igb_reset_q_vector(adapter, v_idx); 1048 } 1049 1050 /** 1051 * igb_free_q_vectors - Free memory allocated for interrupt vectors 1052 * @adapter: board private structure to initialize 1053 * 1054 * This function frees the memory allocated to the q_vectors. In addition if 1055 * NAPI is enabled it will delete any references to the NAPI struct prior 1056 * to freeing the q_vector. 1057 **/ 1058 static void igb_free_q_vectors(struct igb_adapter *adapter) 1059 { 1060 int v_idx = adapter->num_q_vectors; 1061 1062 adapter->num_tx_queues = 0; 1063 adapter->num_rx_queues = 0; 1064 adapter->num_q_vectors = 0; 1065 1066 while (v_idx--) { 1067 igb_reset_q_vector(adapter, v_idx); 1068 igb_free_q_vector(adapter, v_idx); 1069 } 1070 } 1071 1072 /** 1073 * igb_clear_interrupt_scheme - reset the device to a state of no interrupts 1074 * @adapter: board private structure to initialize 1075 * 1076 * This function resets the device so that it has 0 Rx queues, Tx queues, and 1077 * MSI-X interrupts allocated. 1078 */ 1079 static void igb_clear_interrupt_scheme(struct igb_adapter *adapter) 1080 { 1081 igb_free_q_vectors(adapter); 1082 igb_reset_interrupt_capability(adapter); 1083 } 1084 1085 /** 1086 * igb_set_interrupt_capability - set MSI or MSI-X if supported 1087 * @adapter: board private structure to initialize 1088 * @msix: boolean value of MSIX capability 1089 * 1090 * Attempt to configure interrupts using the best available 1091 * capabilities of the hardware and kernel. 1092 **/ 1093 static void igb_set_interrupt_capability(struct igb_adapter *adapter, bool msix) 1094 { 1095 int err; 1096 int numvecs, i; 1097 1098 if (!msix) 1099 goto msi_only; 1100 adapter->flags |= IGB_FLAG_HAS_MSIX; 1101 1102 /* Number of supported queues. */ 1103 adapter->num_rx_queues = adapter->rss_queues; 1104 if (adapter->vfs_allocated_count) 1105 adapter->num_tx_queues = 1; 1106 else 1107 adapter->num_tx_queues = adapter->rss_queues; 1108 1109 /* start with one vector for every Rx queue */ 1110 numvecs = adapter->num_rx_queues; 1111 1112 /* if Tx handler is separate add 1 for every Tx queue */ 1113 if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS)) 1114 numvecs += adapter->num_tx_queues; 1115 1116 /* store the number of vectors reserved for queues */ 1117 adapter->num_q_vectors = numvecs; 1118 1119 /* add 1 vector for link status interrupts */ 1120 numvecs++; 1121 for (i = 0; i < numvecs; i++) 1122 adapter->msix_entries[i].entry = i; 1123 1124 err = pci_enable_msix_range(adapter->pdev, 1125 adapter->msix_entries, 1126 numvecs, 1127 numvecs); 1128 if (err > 0) 1129 return; 1130 1131 igb_reset_interrupt_capability(adapter); 1132 1133 /* If we can't do MSI-X, try MSI */ 1134 msi_only: 1135 adapter->flags &= ~IGB_FLAG_HAS_MSIX; 1136 #ifdef CONFIG_PCI_IOV 1137 /* disable SR-IOV for non MSI-X configurations */ 1138 if (adapter->vf_data) { 1139 struct e1000_hw *hw = &adapter->hw; 1140 /* disable iov and allow time for transactions to clear */ 1141 pci_disable_sriov(adapter->pdev); 1142 msleep(500); 1143 1144 kfree(adapter->vf_mac_list); 1145 adapter->vf_mac_list = NULL; 1146 kfree(adapter->vf_data); 1147 adapter->vf_data = NULL; 1148 wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); 1149 wrfl(); 1150 msleep(100); 1151 dev_info(&adapter->pdev->dev, "IOV Disabled\n"); 1152 } 1153 #endif 1154 adapter->vfs_allocated_count = 0; 1155 adapter->rss_queues = 1; 1156 adapter->flags |= IGB_FLAG_QUEUE_PAIRS; 1157 adapter->num_rx_queues = 1; 1158 adapter->num_tx_queues = 1; 1159 adapter->num_q_vectors = 1; 1160 if (!pci_enable_msi(adapter->pdev)) 1161 adapter->flags |= IGB_FLAG_HAS_MSI; 1162 } 1163 1164 static void igb_add_ring(struct igb_ring *ring, 1165 struct igb_ring_container *head) 1166 { 1167 head->ring = ring; 1168 head->count++; 1169 } 1170 1171 /** 1172 * igb_alloc_q_vector - Allocate memory for a single interrupt vector 1173 * @adapter: board private structure to initialize 1174 * @v_count: q_vectors allocated on adapter, used for ring interleaving 1175 * @v_idx: index of vector in adapter struct 1176 * @txr_count: total number of Tx rings to allocate 1177 * @txr_idx: index of first Tx ring to allocate 1178 * @rxr_count: total number of Rx rings to allocate 1179 * @rxr_idx: index of first Rx ring to allocate 1180 * 1181 * We allocate one q_vector. If allocation fails we return -ENOMEM. 1182 **/ 1183 static int igb_alloc_q_vector(struct igb_adapter *adapter, 1184 int v_count, int v_idx, 1185 int txr_count, int txr_idx, 1186 int rxr_count, int rxr_idx) 1187 { 1188 struct igb_q_vector *q_vector; 1189 struct igb_ring *ring; 1190 int ring_count; 1191 size_t size; 1192 1193 /* igb only supports 1 Tx and/or 1 Rx queue per vector */ 1194 if (txr_count > 1 || rxr_count > 1) 1195 return -ENOMEM; 1196 1197 ring_count = txr_count + rxr_count; 1198 size = struct_size(q_vector, ring, ring_count); 1199 1200 /* allocate q_vector and rings */ 1201 q_vector = adapter->q_vector[v_idx]; 1202 if (!q_vector) { 1203 q_vector = kzalloc(size, GFP_KERNEL); 1204 } else if (size > ksize(q_vector)) { 1205 kfree_rcu(q_vector, rcu); 1206 q_vector = kzalloc(size, GFP_KERNEL); 1207 } else { 1208 memset(q_vector, 0, size); 1209 } 1210 if (!q_vector) 1211 return -ENOMEM; 1212 1213 /* initialize NAPI */ 1214 netif_napi_add(adapter->netdev, &q_vector->napi, 1215 igb_poll, 64); 1216 1217 /* tie q_vector and adapter together */ 1218 adapter->q_vector[v_idx] = q_vector; 1219 q_vector->adapter = adapter; 1220 1221 /* initialize work limits */ 1222 q_vector->tx.work_limit = adapter->tx_work_limit; 1223 1224 /* initialize ITR configuration */ 1225 q_vector->itr_register = adapter->io_addr + E1000_EITR(0); 1226 q_vector->itr_val = IGB_START_ITR; 1227 1228 /* initialize pointer to rings */ 1229 ring = q_vector->ring; 1230 1231 /* intialize ITR */ 1232 if (rxr_count) { 1233 /* rx or rx/tx vector */ 1234 if (!adapter->rx_itr_setting || adapter->rx_itr_setting > 3) 1235 q_vector->itr_val = adapter->rx_itr_setting; 1236 } else { 1237 /* tx only vector */ 1238 if (!adapter->tx_itr_setting || adapter->tx_itr_setting > 3) 1239 q_vector->itr_val = adapter->tx_itr_setting; 1240 } 1241 1242 if (txr_count) { 1243 /* assign generic ring traits */ 1244 ring->dev = &adapter->pdev->dev; 1245 ring->netdev = adapter->netdev; 1246 1247 /* configure backlink on ring */ 1248 ring->q_vector = q_vector; 1249 1250 /* update q_vector Tx values */ 1251 igb_add_ring(ring, &q_vector->tx); 1252 1253 /* For 82575, context index must be unique per ring. */ 1254 if (adapter->hw.mac.type == e1000_82575) 1255 set_bit(IGB_RING_FLAG_TX_CTX_IDX, &ring->flags); 1256 1257 /* apply Tx specific ring traits */ 1258 ring->count = adapter->tx_ring_count; 1259 ring->queue_index = txr_idx; 1260 1261 ring->cbs_enable = false; 1262 ring->idleslope = 0; 1263 ring->sendslope = 0; 1264 ring->hicredit = 0; 1265 ring->locredit = 0; 1266 1267 u64_stats_init(&ring->tx_syncp); 1268 u64_stats_init(&ring->tx_syncp2); 1269 1270 /* assign ring to adapter */ 1271 adapter->tx_ring[txr_idx] = ring; 1272 1273 /* push pointer to next ring */ 1274 ring++; 1275 } 1276 1277 if (rxr_count) { 1278 /* assign generic ring traits */ 1279 ring->dev = &adapter->pdev->dev; 1280 ring->netdev = adapter->netdev; 1281 1282 /* configure backlink on ring */ 1283 ring->q_vector = q_vector; 1284 1285 /* update q_vector Rx values */ 1286 igb_add_ring(ring, &q_vector->rx); 1287 1288 /* set flag indicating ring supports SCTP checksum offload */ 1289 if (adapter->hw.mac.type >= e1000_82576) 1290 set_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags); 1291 1292 /* On i350, i354, i210, and i211, loopback VLAN packets 1293 * have the tag byte-swapped. 1294 */ 1295 if (adapter->hw.mac.type >= e1000_i350) 1296 set_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags); 1297 1298 /* apply Rx specific ring traits */ 1299 ring->count = adapter->rx_ring_count; 1300 ring->queue_index = rxr_idx; 1301 1302 u64_stats_init(&ring->rx_syncp); 1303 1304 /* assign ring to adapter */ 1305 adapter->rx_ring[rxr_idx] = ring; 1306 } 1307 1308 return 0; 1309 } 1310 1311 1312 /** 1313 * igb_alloc_q_vectors - Allocate memory for interrupt vectors 1314 * @adapter: board private structure to initialize 1315 * 1316 * We allocate one q_vector per queue interrupt. If allocation fails we 1317 * return -ENOMEM. 1318 **/ 1319 static int igb_alloc_q_vectors(struct igb_adapter *adapter) 1320 { 1321 int q_vectors = adapter->num_q_vectors; 1322 int rxr_remaining = adapter->num_rx_queues; 1323 int txr_remaining = adapter->num_tx_queues; 1324 int rxr_idx = 0, txr_idx = 0, v_idx = 0; 1325 int err; 1326 1327 if (q_vectors >= (rxr_remaining + txr_remaining)) { 1328 for (; rxr_remaining; v_idx++) { 1329 err = igb_alloc_q_vector(adapter, q_vectors, v_idx, 1330 0, 0, 1, rxr_idx); 1331 1332 if (err) 1333 goto err_out; 1334 1335 /* update counts and index */ 1336 rxr_remaining--; 1337 rxr_idx++; 1338 } 1339 } 1340 1341 for (; v_idx < q_vectors; v_idx++) { 1342 int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - v_idx); 1343 int tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - v_idx); 1344 1345 err = igb_alloc_q_vector(adapter, q_vectors, v_idx, 1346 tqpv, txr_idx, rqpv, rxr_idx); 1347 1348 if (err) 1349 goto err_out; 1350 1351 /* update counts and index */ 1352 rxr_remaining -= rqpv; 1353 txr_remaining -= tqpv; 1354 rxr_idx++; 1355 txr_idx++; 1356 } 1357 1358 return 0; 1359 1360 err_out: 1361 adapter->num_tx_queues = 0; 1362 adapter->num_rx_queues = 0; 1363 adapter->num_q_vectors = 0; 1364 1365 while (v_idx--) 1366 igb_free_q_vector(adapter, v_idx); 1367 1368 return -ENOMEM; 1369 } 1370 1371 /** 1372 * igb_init_interrupt_scheme - initialize interrupts, allocate queues/vectors 1373 * @adapter: board private structure to initialize 1374 * @msix: boolean value of MSIX capability 1375 * 1376 * This function initializes the interrupts and allocates all of the queues. 1377 **/ 1378 static int igb_init_interrupt_scheme(struct igb_adapter *adapter, bool msix) 1379 { 1380 struct pci_dev *pdev = adapter->pdev; 1381 int err; 1382 1383 igb_set_interrupt_capability(adapter, msix); 1384 1385 err = igb_alloc_q_vectors(adapter); 1386 if (err) { 1387 dev_err(&pdev->dev, "Unable to allocate memory for vectors\n"); 1388 goto err_alloc_q_vectors; 1389 } 1390 1391 igb_cache_ring_register(adapter); 1392 1393 return 0; 1394 1395 err_alloc_q_vectors: 1396 igb_reset_interrupt_capability(adapter); 1397 return err; 1398 } 1399 1400 /** 1401 * igb_request_irq - initialize interrupts 1402 * @adapter: board private structure to initialize 1403 * 1404 * Attempts to configure interrupts using the best available 1405 * capabilities of the hardware and kernel. 1406 **/ 1407 static int igb_request_irq(struct igb_adapter *adapter) 1408 { 1409 struct net_device *netdev = adapter->netdev; 1410 struct pci_dev *pdev = adapter->pdev; 1411 int err = 0; 1412 1413 if (adapter->flags & IGB_FLAG_HAS_MSIX) { 1414 err = igb_request_msix(adapter); 1415 if (!err) 1416 goto request_done; 1417 /* fall back to MSI */ 1418 igb_free_all_tx_resources(adapter); 1419 igb_free_all_rx_resources(adapter); 1420 1421 igb_clear_interrupt_scheme(adapter); 1422 err = igb_init_interrupt_scheme(adapter, false); 1423 if (err) 1424 goto request_done; 1425 1426 igb_setup_all_tx_resources(adapter); 1427 igb_setup_all_rx_resources(adapter); 1428 igb_configure(adapter); 1429 } 1430 1431 igb_assign_vector(adapter->q_vector[0], 0); 1432 1433 if (adapter->flags & IGB_FLAG_HAS_MSI) { 1434 err = request_irq(pdev->irq, igb_intr_msi, 0, 1435 netdev->name, adapter); 1436 if (!err) 1437 goto request_done; 1438 1439 /* fall back to legacy interrupts */ 1440 igb_reset_interrupt_capability(adapter); 1441 adapter->flags &= ~IGB_FLAG_HAS_MSI; 1442 } 1443 1444 err = request_irq(pdev->irq, igb_intr, IRQF_SHARED, 1445 netdev->name, adapter); 1446 1447 if (err) 1448 dev_err(&pdev->dev, "Error %d getting interrupt\n", 1449 err); 1450 1451 request_done: 1452 return err; 1453 } 1454 1455 static void igb_free_irq(struct igb_adapter *adapter) 1456 { 1457 if (adapter->flags & IGB_FLAG_HAS_MSIX) { 1458 int vector = 0, i; 1459 1460 free_irq(adapter->msix_entries[vector++].vector, adapter); 1461 1462 for (i = 0; i < adapter->num_q_vectors; i++) 1463 free_irq(adapter->msix_entries[vector++].vector, 1464 adapter->q_vector[i]); 1465 } else { 1466 free_irq(adapter->pdev->irq, adapter); 1467 } 1468 } 1469 1470 /** 1471 * igb_irq_disable - Mask off interrupt generation on the NIC 1472 * @adapter: board private structure 1473 **/ 1474 static void igb_irq_disable(struct igb_adapter *adapter) 1475 { 1476 struct e1000_hw *hw = &adapter->hw; 1477 1478 /* we need to be careful when disabling interrupts. The VFs are also 1479 * mapped into these registers and so clearing the bits can cause 1480 * issues on the VF drivers so we only need to clear what we set 1481 */ 1482 if (adapter->flags & IGB_FLAG_HAS_MSIX) { 1483 u32 regval = rd32(E1000_EIAM); 1484 1485 wr32(E1000_EIAM, regval & ~adapter->eims_enable_mask); 1486 wr32(E1000_EIMC, adapter->eims_enable_mask); 1487 regval = rd32(E1000_EIAC); 1488 wr32(E1000_EIAC, regval & ~adapter->eims_enable_mask); 1489 } 1490 1491 wr32(E1000_IAM, 0); 1492 wr32(E1000_IMC, ~0); 1493 wrfl(); 1494 if (adapter->flags & IGB_FLAG_HAS_MSIX) { 1495 int i; 1496 1497 for (i = 0; i < adapter->num_q_vectors; i++) 1498 synchronize_irq(adapter->msix_entries[i].vector); 1499 } else { 1500 synchronize_irq(adapter->pdev->irq); 1501 } 1502 } 1503 1504 /** 1505 * igb_irq_enable - Enable default interrupt generation settings 1506 * @adapter: board private structure 1507 **/ 1508 static void igb_irq_enable(struct igb_adapter *adapter) 1509 { 1510 struct e1000_hw *hw = &adapter->hw; 1511 1512 if (adapter->flags & IGB_FLAG_HAS_MSIX) { 1513 u32 ims = E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_DRSTA; 1514 u32 regval = rd32(E1000_EIAC); 1515 1516 wr32(E1000_EIAC, regval | adapter->eims_enable_mask); 1517 regval = rd32(E1000_EIAM); 1518 wr32(E1000_EIAM, regval | adapter->eims_enable_mask); 1519 wr32(E1000_EIMS, adapter->eims_enable_mask); 1520 if (adapter->vfs_allocated_count) { 1521 wr32(E1000_MBVFIMR, 0xFF); 1522 ims |= E1000_IMS_VMMB; 1523 } 1524 wr32(E1000_IMS, ims); 1525 } else { 1526 wr32(E1000_IMS, IMS_ENABLE_MASK | 1527 E1000_IMS_DRSTA); 1528 wr32(E1000_IAM, IMS_ENABLE_MASK | 1529 E1000_IMS_DRSTA); 1530 } 1531 } 1532 1533 static void igb_update_mng_vlan(struct igb_adapter *adapter) 1534 { 1535 struct e1000_hw *hw = &adapter->hw; 1536 u16 pf_id = adapter->vfs_allocated_count; 1537 u16 vid = adapter->hw.mng_cookie.vlan_id; 1538 u16 old_vid = adapter->mng_vlan_id; 1539 1540 if (hw->mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { 1541 /* add VID to filter table */ 1542 igb_vfta_set(hw, vid, pf_id, true, true); 1543 adapter->mng_vlan_id = vid; 1544 } else { 1545 adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; 1546 } 1547 1548 if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && 1549 (vid != old_vid) && 1550 !test_bit(old_vid, adapter->active_vlans)) { 1551 /* remove VID from filter table */ 1552 igb_vfta_set(hw, vid, pf_id, false, true); 1553 } 1554 } 1555 1556 /** 1557 * igb_release_hw_control - release control of the h/w to f/w 1558 * @adapter: address of board private structure 1559 * 1560 * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. 1561 * For ASF and Pass Through versions of f/w this means that the 1562 * driver is no longer loaded. 1563 **/ 1564 static void igb_release_hw_control(struct igb_adapter *adapter) 1565 { 1566 struct e1000_hw *hw = &adapter->hw; 1567 u32 ctrl_ext; 1568 1569 /* Let firmware take over control of h/w */ 1570 ctrl_ext = rd32(E1000_CTRL_EXT); 1571 wr32(E1000_CTRL_EXT, 1572 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); 1573 } 1574 1575 /** 1576 * igb_get_hw_control - get control of the h/w from f/w 1577 * @adapter: address of board private structure 1578 * 1579 * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. 1580 * For ASF and Pass Through versions of f/w this means that 1581 * the driver is loaded. 1582 **/ 1583 static void igb_get_hw_control(struct igb_adapter *adapter) 1584 { 1585 struct e1000_hw *hw = &adapter->hw; 1586 u32 ctrl_ext; 1587 1588 /* Let firmware know the driver has taken over */ 1589 ctrl_ext = rd32(E1000_CTRL_EXT); 1590 wr32(E1000_CTRL_EXT, 1591 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); 1592 } 1593 1594 static void enable_fqtss(struct igb_adapter *adapter, bool enable) 1595 { 1596 struct net_device *netdev = adapter->netdev; 1597 struct e1000_hw *hw = &adapter->hw; 1598 1599 WARN_ON(hw->mac.type != e1000_i210); 1600 1601 if (enable) 1602 adapter->flags |= IGB_FLAG_FQTSS; 1603 else 1604 adapter->flags &= ~IGB_FLAG_FQTSS; 1605 1606 if (netif_running(netdev)) 1607 schedule_work(&adapter->reset_task); 1608 } 1609 1610 static bool is_fqtss_enabled(struct igb_adapter *adapter) 1611 { 1612 return (adapter->flags & IGB_FLAG_FQTSS) ? true : false; 1613 } 1614 1615 static void set_tx_desc_fetch_prio(struct e1000_hw *hw, int queue, 1616 enum tx_queue_prio prio) 1617 { 1618 u32 val; 1619 1620 WARN_ON(hw->mac.type != e1000_i210); 1621 WARN_ON(queue < 0 || queue > 4); 1622 1623 val = rd32(E1000_I210_TXDCTL(queue)); 1624 1625 if (prio == TX_QUEUE_PRIO_HIGH) 1626 val |= E1000_TXDCTL_PRIORITY; 1627 else 1628 val &= ~E1000_TXDCTL_PRIORITY; 1629 1630 wr32(E1000_I210_TXDCTL(queue), val); 1631 } 1632 1633 static void set_queue_mode(struct e1000_hw *hw, int queue, enum queue_mode mode) 1634 { 1635 u32 val; 1636 1637 WARN_ON(hw->mac.type != e1000_i210); 1638 WARN_ON(queue < 0 || queue > 1); 1639 1640 val = rd32(E1000_I210_TQAVCC(queue)); 1641 1642 if (mode == QUEUE_MODE_STREAM_RESERVATION) 1643 val |= E1000_TQAVCC_QUEUEMODE; 1644 else 1645 val &= ~E1000_TQAVCC_QUEUEMODE; 1646 1647 wr32(E1000_I210_TQAVCC(queue), val); 1648 } 1649 1650 static bool is_any_cbs_enabled(struct igb_adapter *adapter) 1651 { 1652 int i; 1653 1654 for (i = 0; i < adapter->num_tx_queues; i++) { 1655 if (adapter->tx_ring[i]->cbs_enable) 1656 return true; 1657 } 1658 1659 return false; 1660 } 1661 1662 static bool is_any_txtime_enabled(struct igb_adapter *adapter) 1663 { 1664 int i; 1665 1666 for (i = 0; i < adapter->num_tx_queues; i++) { 1667 if (adapter->tx_ring[i]->launchtime_enable) 1668 return true; 1669 } 1670 1671 return false; 1672 } 1673 1674 /** 1675 * igb_config_tx_modes - Configure "Qav Tx mode" features on igb 1676 * @adapter: pointer to adapter struct 1677 * @queue: queue number 1678 * 1679 * Configure CBS and Launchtime for a given hardware queue. 1680 * Parameters are retrieved from the correct Tx ring, so 1681 * igb_save_cbs_params() and igb_save_txtime_params() should be used 1682 * for setting those correctly prior to this function being called. 1683 **/ 1684 static void igb_config_tx_modes(struct igb_adapter *adapter, int queue) 1685 { 1686 struct net_device *netdev = adapter->netdev; 1687 struct e1000_hw *hw = &adapter->hw; 1688 struct igb_ring *ring; 1689 u32 tqavcc, tqavctrl; 1690 u16 value; 1691 1692 WARN_ON(hw->mac.type != e1000_i210); 1693 WARN_ON(queue < 0 || queue > 1); 1694 ring = adapter->tx_ring[queue]; 1695 1696 /* If any of the Qav features is enabled, configure queues as SR and 1697 * with HIGH PRIO. If none is, then configure them with LOW PRIO and 1698 * as SP. 1699 */ 1700 if (ring->cbs_enable || ring->launchtime_enable) { 1701 set_tx_desc_fetch_prio(hw, queue, TX_QUEUE_PRIO_HIGH); 1702 set_queue_mode(hw, queue, QUEUE_MODE_STREAM_RESERVATION); 1703 } else { 1704 set_tx_desc_fetch_prio(hw, queue, TX_QUEUE_PRIO_LOW); 1705 set_queue_mode(hw, queue, QUEUE_MODE_STRICT_PRIORITY); 1706 } 1707 1708 /* If CBS is enabled, set DataTranARB and config its parameters. */ 1709 if (ring->cbs_enable || queue == 0) { 1710 /* i210 does not allow the queue 0 to be in the Strict 1711 * Priority mode while the Qav mode is enabled, so, 1712 * instead of disabling strict priority mode, we give 1713 * queue 0 the maximum of credits possible. 1714 * 1715 * See section 8.12.19 of the i210 datasheet, "Note: 1716 * Queue0 QueueMode must be set to 1b when 1717 * TransmitMode is set to Qav." 1718 */ 1719 if (queue == 0 && !ring->cbs_enable) { 1720 /* max "linkspeed" idleslope in kbps */ 1721 ring->idleslope = 1000000; 1722 ring->hicredit = ETH_FRAME_LEN; 1723 } 1724 1725 /* Always set data transfer arbitration to credit-based 1726 * shaper algorithm on TQAVCTRL if CBS is enabled for any of 1727 * the queues. 1728 */ 1729 tqavctrl = rd32(E1000_I210_TQAVCTRL); 1730 tqavctrl |= E1000_TQAVCTRL_DATATRANARB; 1731 wr32(E1000_I210_TQAVCTRL, tqavctrl); 1732 1733 /* According to i210 datasheet section 7.2.7.7, we should set 1734 * the 'idleSlope' field from TQAVCC register following the 1735 * equation: 1736 * 1737 * For 100 Mbps link speed: 1738 * 1739 * value = BW * 0x7735 * 0.2 (E1) 1740 * 1741 * For 1000Mbps link speed: 1742 * 1743 * value = BW * 0x7735 * 2 (E2) 1744 * 1745 * E1 and E2 can be merged into one equation as shown below. 1746 * Note that 'link-speed' is in Mbps. 1747 * 1748 * value = BW * 0x7735 * 2 * link-speed 1749 * -------------- (E3) 1750 * 1000 1751 * 1752 * 'BW' is the percentage bandwidth out of full link speed 1753 * which can be found with the following equation. Note that 1754 * idleSlope here is the parameter from this function which 1755 * is in kbps. 1756 * 1757 * BW = idleSlope 1758 * ----------------- (E4) 1759 * link-speed * 1000 1760 * 1761 * That said, we can come up with a generic equation to 1762 * calculate the value we should set it TQAVCC register by 1763 * replacing 'BW' in E3 by E4. The resulting equation is: 1764 * 1765 * value = idleSlope * 0x7735 * 2 * link-speed 1766 * ----------------- -------------- (E5) 1767 * link-speed * 1000 1000 1768 * 1769 * 'link-speed' is present in both sides of the fraction so 1770 * it is canceled out. The final equation is the following: 1771 * 1772 * value = idleSlope * 61034 1773 * ----------------- (E6) 1774 * 1000000 1775 * 1776 * NOTE: For i210, given the above, we can see that idleslope 1777 * is represented in 16.38431 kbps units by the value at 1778 * the TQAVCC register (1Gbps / 61034), which reduces 1779 * the granularity for idleslope increments. 1780 * For instance, if you want to configure a 2576kbps 1781 * idleslope, the value to be written on the register 1782 * would have to be 157.23. If rounded down, you end 1783 * up with less bandwidth available than originally 1784 * required (~2572 kbps). If rounded up, you end up 1785 * with a higher bandwidth (~2589 kbps). Below the 1786 * approach we take is to always round up the 1787 * calculated value, so the resulting bandwidth might 1788 * be slightly higher for some configurations. 1789 */ 1790 value = DIV_ROUND_UP_ULL(ring->idleslope * 61034ULL, 1000000); 1791 1792 tqavcc = rd32(E1000_I210_TQAVCC(queue)); 1793 tqavcc &= ~E1000_TQAVCC_IDLESLOPE_MASK; 1794 tqavcc |= value; 1795 wr32(E1000_I210_TQAVCC(queue), tqavcc); 1796 1797 wr32(E1000_I210_TQAVHC(queue), 1798 0x80000000 + ring->hicredit * 0x7735); 1799 } else { 1800 1801 /* Set idleSlope to zero. */ 1802 tqavcc = rd32(E1000_I210_TQAVCC(queue)); 1803 tqavcc &= ~E1000_TQAVCC_IDLESLOPE_MASK; 1804 wr32(E1000_I210_TQAVCC(queue), tqavcc); 1805 1806 /* Set hiCredit to zero. */ 1807 wr32(E1000_I210_TQAVHC(queue), 0); 1808 1809 /* If CBS is not enabled for any queues anymore, then return to 1810 * the default state of Data Transmission Arbitration on 1811 * TQAVCTRL. 1812 */ 1813 if (!is_any_cbs_enabled(adapter)) { 1814 tqavctrl = rd32(E1000_I210_TQAVCTRL); 1815 tqavctrl &= ~E1000_TQAVCTRL_DATATRANARB; 1816 wr32(E1000_I210_TQAVCTRL, tqavctrl); 1817 } 1818 } 1819 1820 /* If LaunchTime is enabled, set DataTranTIM. */ 1821 if (ring->launchtime_enable) { 1822 /* Always set DataTranTIM on TQAVCTRL if LaunchTime is enabled 1823 * for any of the SR queues, and configure fetchtime delta. 1824 * XXX NOTE: 1825 * - LaunchTime will be enabled for all SR queues. 1826 * - A fixed offset can be added relative to the launch 1827 * time of all packets if configured at reg LAUNCH_OS0. 1828 * We are keeping it as 0 for now (default value). 1829 */ 1830 tqavctrl = rd32(E1000_I210_TQAVCTRL); 1831 tqavctrl |= E1000_TQAVCTRL_DATATRANTIM | 1832 E1000_TQAVCTRL_FETCHTIME_DELTA; 1833 wr32(E1000_I210_TQAVCTRL, tqavctrl); 1834 } else { 1835 /* If Launchtime is not enabled for any SR queues anymore, 1836 * then clear DataTranTIM on TQAVCTRL and clear fetchtime delta, 1837 * effectively disabling Launchtime. 1838 */ 1839 if (!is_any_txtime_enabled(adapter)) { 1840 tqavctrl = rd32(E1000_I210_TQAVCTRL); 1841 tqavctrl &= ~E1000_TQAVCTRL_DATATRANTIM; 1842 tqavctrl &= ~E1000_TQAVCTRL_FETCHTIME_DELTA; 1843 wr32(E1000_I210_TQAVCTRL, tqavctrl); 1844 } 1845 } 1846 1847 /* XXX: In i210 controller the sendSlope and loCredit parameters from 1848 * CBS are not configurable by software so we don't do any 'controller 1849 * configuration' in respect to these parameters. 1850 */ 1851 1852 netdev_dbg(netdev, "Qav Tx mode: cbs %s, launchtime %s, queue %d idleslope %d sendslope %d hiCredit %d locredit %d\n", 1853 ring->cbs_enable ? "enabled" : "disabled", 1854 ring->launchtime_enable ? "enabled" : "disabled", 1855 queue, 1856 ring->idleslope, ring->sendslope, 1857 ring->hicredit, ring->locredit); 1858 } 1859 1860 static int igb_save_txtime_params(struct igb_adapter *adapter, int queue, 1861 bool enable) 1862 { 1863 struct igb_ring *ring; 1864 1865 if (queue < 0 || queue > adapter->num_tx_queues) 1866 return -EINVAL; 1867 1868 ring = adapter->tx_ring[queue]; 1869 ring->launchtime_enable = enable; 1870 1871 return 0; 1872 } 1873 1874 static int igb_save_cbs_params(struct igb_adapter *adapter, int queue, 1875 bool enable, int idleslope, int sendslope, 1876 int hicredit, int locredit) 1877 { 1878 struct igb_ring *ring; 1879 1880 if (queue < 0 || queue > adapter->num_tx_queues) 1881 return -EINVAL; 1882 1883 ring = adapter->tx_ring[queue]; 1884 1885 ring->cbs_enable = enable; 1886 ring->idleslope = idleslope; 1887 ring->sendslope = sendslope; 1888 ring->hicredit = hicredit; 1889 ring->locredit = locredit; 1890 1891 return 0; 1892 } 1893 1894 /** 1895 * igb_setup_tx_mode - Switch to/from Qav Tx mode when applicable 1896 * @adapter: pointer to adapter struct 1897 * 1898 * Configure TQAVCTRL register switching the controller's Tx mode 1899 * if FQTSS mode is enabled or disabled. Additionally, will issue 1900 * a call to igb_config_tx_modes() per queue so any previously saved 1901 * Tx parameters are applied. 1902 **/ 1903 static void igb_setup_tx_mode(struct igb_adapter *adapter) 1904 { 1905 struct net_device *netdev = adapter->netdev; 1906 struct e1000_hw *hw = &adapter->hw; 1907 u32 val; 1908 1909 /* Only i210 controller supports changing the transmission mode. */ 1910 if (hw->mac.type != e1000_i210) 1911 return; 1912 1913 if (is_fqtss_enabled(adapter)) { 1914 int i, max_queue; 1915 1916 /* Configure TQAVCTRL register: set transmit mode to 'Qav', 1917 * set data fetch arbitration to 'round robin', set SP_WAIT_SR 1918 * so SP queues wait for SR ones. 1919 */ 1920 val = rd32(E1000_I210_TQAVCTRL); 1921 val |= E1000_TQAVCTRL_XMIT_MODE | E1000_TQAVCTRL_SP_WAIT_SR; 1922 val &= ~E1000_TQAVCTRL_DATAFETCHARB; 1923 wr32(E1000_I210_TQAVCTRL, val); 1924 1925 /* Configure Tx and Rx packet buffers sizes as described in 1926 * i210 datasheet section 7.2.7.7. 1927 */ 1928 val = rd32(E1000_TXPBS); 1929 val &= ~I210_TXPBSIZE_MASK; 1930 val |= I210_TXPBSIZE_PB0_6KB | I210_TXPBSIZE_PB1_6KB | 1931 I210_TXPBSIZE_PB2_6KB | I210_TXPBSIZE_PB3_6KB; 1932 wr32(E1000_TXPBS, val); 1933 1934 val = rd32(E1000_RXPBS); 1935 val &= ~I210_RXPBSIZE_MASK; 1936 val |= I210_RXPBSIZE_PB_30KB; 1937 wr32(E1000_RXPBS, val); 1938 1939 /* Section 8.12.9 states that MAX_TPKT_SIZE from DTXMXPKTSZ 1940 * register should not exceed the buffer size programmed in 1941 * TXPBS. The smallest buffer size programmed in TXPBS is 4kB 1942 * so according to the datasheet we should set MAX_TPKT_SIZE to 1943 * 4kB / 64. 1944 * 1945 * However, when we do so, no frame from queue 2 and 3 are 1946 * transmitted. It seems the MAX_TPKT_SIZE should not be great 1947 * or _equal_ to the buffer size programmed in TXPBS. For this 1948 * reason, we set set MAX_ TPKT_SIZE to (4kB - 1) / 64. 1949 */ 1950 val = (4096 - 1) / 64; 1951 wr32(E1000_I210_DTXMXPKTSZ, val); 1952 1953 /* Since FQTSS mode is enabled, apply any CBS configuration 1954 * previously set. If no previous CBS configuration has been 1955 * done, then the initial configuration is applied, which means 1956 * CBS is disabled. 1957 */ 1958 max_queue = (adapter->num_tx_queues < I210_SR_QUEUES_NUM) ? 1959 adapter->num_tx_queues : I210_SR_QUEUES_NUM; 1960 1961 for (i = 0; i < max_queue; i++) { 1962 igb_config_tx_modes(adapter, i); 1963 } 1964 } else { 1965 wr32(E1000_RXPBS, I210_RXPBSIZE_DEFAULT); 1966 wr32(E1000_TXPBS, I210_TXPBSIZE_DEFAULT); 1967 wr32(E1000_I210_DTXMXPKTSZ, I210_DTXMXPKTSZ_DEFAULT); 1968 1969 val = rd32(E1000_I210_TQAVCTRL); 1970 /* According to Section 8.12.21, the other flags we've set when 1971 * enabling FQTSS are not relevant when disabling FQTSS so we 1972 * don't set they here. 1973 */ 1974 val &= ~E1000_TQAVCTRL_XMIT_MODE; 1975 wr32(E1000_I210_TQAVCTRL, val); 1976 } 1977 1978 netdev_dbg(netdev, "FQTSS %s\n", (is_fqtss_enabled(adapter)) ? 1979 "enabled" : "disabled"); 1980 } 1981 1982 /** 1983 * igb_configure - configure the hardware for RX and TX 1984 * @adapter: private board structure 1985 **/ 1986 static void igb_configure(struct igb_adapter *adapter) 1987 { 1988 struct net_device *netdev = adapter->netdev; 1989 int i; 1990 1991 igb_get_hw_control(adapter); 1992 igb_set_rx_mode(netdev); 1993 igb_setup_tx_mode(adapter); 1994 1995 igb_restore_vlan(adapter); 1996 1997 igb_setup_tctl(adapter); 1998 igb_setup_mrqc(adapter); 1999 igb_setup_rctl(adapter); 2000 2001 igb_nfc_filter_restore(adapter); 2002 igb_configure_tx(adapter); 2003 igb_configure_rx(adapter); 2004 2005 igb_rx_fifo_flush_82575(&adapter->hw); 2006 2007 /* call igb_desc_unused which always leaves 2008 * at least 1 descriptor unused to make sure 2009 * next_to_use != next_to_clean 2010 */ 2011 for (i = 0; i < adapter->num_rx_queues; i++) { 2012 struct igb_ring *ring = adapter->rx_ring[i]; 2013 igb_alloc_rx_buffers(ring, igb_desc_unused(ring)); 2014 } 2015 } 2016 2017 /** 2018 * igb_power_up_link - Power up the phy/serdes link 2019 * @adapter: address of board private structure 2020 **/ 2021 void igb_power_up_link(struct igb_adapter *adapter) 2022 { 2023 igb_reset_phy(&adapter->hw); 2024 2025 if (adapter->hw.phy.media_type == e1000_media_type_copper) 2026 igb_power_up_phy_copper(&adapter->hw); 2027 else 2028 igb_power_up_serdes_link_82575(&adapter->hw); 2029 2030 igb_setup_link(&adapter->hw); 2031 } 2032 2033 /** 2034 * igb_power_down_link - Power down the phy/serdes link 2035 * @adapter: address of board private structure 2036 */ 2037 static void igb_power_down_link(struct igb_adapter *adapter) 2038 { 2039 if (adapter->hw.phy.media_type == e1000_media_type_copper) 2040 igb_power_down_phy_copper_82575(&adapter->hw); 2041 else 2042 igb_shutdown_serdes_link_82575(&adapter->hw); 2043 } 2044 2045 /** 2046 * igb_check_swap_media - Detect and switch function for Media Auto Sense 2047 * @adapter: address of the board private structure 2048 **/ 2049 static void igb_check_swap_media(struct igb_adapter *adapter) 2050 { 2051 struct e1000_hw *hw = &adapter->hw; 2052 u32 ctrl_ext, connsw; 2053 bool swap_now = false; 2054 2055 ctrl_ext = rd32(E1000_CTRL_EXT); 2056 connsw = rd32(E1000_CONNSW); 2057 2058 /* need to live swap if current media is copper and we have fiber/serdes 2059 * to go to. 2060 */ 2061 2062 if ((hw->phy.media_type == e1000_media_type_copper) && 2063 (!(connsw & E1000_CONNSW_AUTOSENSE_EN))) { 2064 swap_now = true; 2065 } else if ((hw->phy.media_type != e1000_media_type_copper) && 2066 !(connsw & E1000_CONNSW_SERDESD)) { 2067 /* copper signal takes time to appear */ 2068 if (adapter->copper_tries < 4) { 2069 adapter->copper_tries++; 2070 connsw |= E1000_CONNSW_AUTOSENSE_CONF; 2071 wr32(E1000_CONNSW, connsw); 2072 return; 2073 } else { 2074 adapter->copper_tries = 0; 2075 if ((connsw & E1000_CONNSW_PHYSD) && 2076 (!(connsw & E1000_CONNSW_PHY_PDN))) { 2077 swap_now = true; 2078 connsw &= ~E1000_CONNSW_AUTOSENSE_CONF; 2079 wr32(E1000_CONNSW, connsw); 2080 } 2081 } 2082 } 2083 2084 if (!swap_now) 2085 return; 2086 2087 switch (hw->phy.media_type) { 2088 case e1000_media_type_copper: 2089 netdev_info(adapter->netdev, 2090 "MAS: changing media to fiber/serdes\n"); 2091 ctrl_ext |= 2092 E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; 2093 adapter->flags |= IGB_FLAG_MEDIA_RESET; 2094 adapter->copper_tries = 0; 2095 break; 2096 case e1000_media_type_internal_serdes: 2097 case e1000_media_type_fiber: 2098 netdev_info(adapter->netdev, 2099 "MAS: changing media to copper\n"); 2100 ctrl_ext &= 2101 ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; 2102 adapter->flags |= IGB_FLAG_MEDIA_RESET; 2103 break; 2104 default: 2105 /* shouldn't get here during regular operation */ 2106 netdev_err(adapter->netdev, 2107 "AMS: Invalid media type found, returning\n"); 2108 break; 2109 } 2110 wr32(E1000_CTRL_EXT, ctrl_ext); 2111 } 2112 2113 /** 2114 * igb_up - Open the interface and prepare it to handle traffic 2115 * @adapter: board private structure 2116 **/ 2117 int igb_up(struct igb_adapter *adapter) 2118 { 2119 struct e1000_hw *hw = &adapter->hw; 2120 int i; 2121 2122 /* hardware has been reset, we need to reload some things */ 2123 igb_configure(adapter); 2124 2125 clear_bit(__IGB_DOWN, &adapter->state); 2126 2127 for (i = 0; i < adapter->num_q_vectors; i++) 2128 napi_enable(&(adapter->q_vector[i]->napi)); 2129 2130 if (adapter->flags & IGB_FLAG_HAS_MSIX) 2131 igb_configure_msix(adapter); 2132 else 2133 igb_assign_vector(adapter->q_vector[0], 0); 2134 2135 /* Clear any pending interrupts. */ 2136 rd32(E1000_TSICR); 2137 rd32(E1000_ICR); 2138 igb_irq_enable(adapter); 2139 2140 /* notify VFs that reset has been completed */ 2141 if (adapter->vfs_allocated_count) { 2142 u32 reg_data = rd32(E1000_CTRL_EXT); 2143 2144 reg_data |= E1000_CTRL_EXT_PFRSTD; 2145 wr32(E1000_CTRL_EXT, reg_data); 2146 } 2147 2148 netif_tx_start_all_queues(adapter->netdev); 2149 2150 /* start the watchdog. */ 2151 hw->mac.get_link_status = 1; 2152 schedule_work(&adapter->watchdog_task); 2153 2154 if ((adapter->flags & IGB_FLAG_EEE) && 2155 (!hw->dev_spec._82575.eee_disable)) 2156 adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T; 2157 2158 return 0; 2159 } 2160 2161 void igb_down(struct igb_adapter *adapter) 2162 { 2163 struct net_device *netdev = adapter->netdev; 2164 struct e1000_hw *hw = &adapter->hw; 2165 u32 tctl, rctl; 2166 int i; 2167 2168 /* signal that we're down so the interrupt handler does not 2169 * reschedule our watchdog timer 2170 */ 2171 set_bit(__IGB_DOWN, &adapter->state); 2172 2173 /* disable receives in the hardware */ 2174 rctl = rd32(E1000_RCTL); 2175 wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); 2176 /* flush and sleep below */ 2177 2178 igb_nfc_filter_exit(adapter); 2179 2180 netif_carrier_off(netdev); 2181 netif_tx_stop_all_queues(netdev); 2182 2183 /* disable transmits in the hardware */ 2184 tctl = rd32(E1000_TCTL); 2185 tctl &= ~E1000_TCTL_EN; 2186 wr32(E1000_TCTL, tctl); 2187 /* flush both disables and wait for them to finish */ 2188 wrfl(); 2189 usleep_range(10000, 11000); 2190 2191 igb_irq_disable(adapter); 2192 2193 adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; 2194 2195 for (i = 0; i < adapter->num_q_vectors; i++) { 2196 if (adapter->q_vector[i]) { 2197 napi_synchronize(&adapter->q_vector[i]->napi); 2198 napi_disable(&adapter->q_vector[i]->napi); 2199 } 2200 } 2201 2202 del_timer_sync(&adapter->watchdog_timer); 2203 del_timer_sync(&adapter->phy_info_timer); 2204 2205 /* record the stats before reset*/ 2206 spin_lock(&adapter->stats64_lock); 2207 igb_update_stats(adapter); 2208 spin_unlock(&adapter->stats64_lock); 2209 2210 adapter->link_speed = 0; 2211 adapter->link_duplex = 0; 2212 2213 if (!pci_channel_offline(adapter->pdev)) 2214 igb_reset(adapter); 2215 2216 /* clear VLAN promisc flag so VFTA will be updated if necessary */ 2217 adapter->flags &= ~IGB_FLAG_VLAN_PROMISC; 2218 2219 igb_clean_all_tx_rings(adapter); 2220 igb_clean_all_rx_rings(adapter); 2221 #ifdef CONFIG_IGB_DCA 2222 2223 /* since we reset the hardware DCA settings were cleared */ 2224 igb_setup_dca(adapter); 2225 #endif 2226 } 2227 2228 void igb_reinit_locked(struct igb_adapter *adapter) 2229 { 2230 while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) 2231 usleep_range(1000, 2000); 2232 igb_down(adapter); 2233 igb_up(adapter); 2234 clear_bit(__IGB_RESETTING, &adapter->state); 2235 } 2236 2237 /** igb_enable_mas - Media Autosense re-enable after swap 2238 * 2239 * @adapter: adapter struct 2240 **/ 2241 static void igb_enable_mas(struct igb_adapter *adapter) 2242 { 2243 struct e1000_hw *hw = &adapter->hw; 2244 u32 connsw = rd32(E1000_CONNSW); 2245 2246 /* configure for SerDes media detect */ 2247 if ((hw->phy.media_type == e1000_media_type_copper) && 2248 (!(connsw & E1000_CONNSW_SERDESD))) { 2249 connsw |= E1000_CONNSW_ENRGSRC; 2250 connsw |= E1000_CONNSW_AUTOSENSE_EN; 2251 wr32(E1000_CONNSW, connsw); 2252 wrfl(); 2253 } 2254 } 2255 2256 void igb_reset(struct igb_adapter *adapter) 2257 { 2258 struct pci_dev *pdev = adapter->pdev; 2259 struct e1000_hw *hw = &adapter->hw; 2260 struct e1000_mac_info *mac = &hw->mac; 2261 struct e1000_fc_info *fc = &hw->fc; 2262 u32 pba, hwm; 2263 2264 /* Repartition Pba for greater than 9k mtu 2265 * To take effect CTRL.RST is required. 2266 */ 2267 switch (mac->type) { 2268 case e1000_i350: 2269 case e1000_i354: 2270 case e1000_82580: 2271 pba = rd32(E1000_RXPBS); 2272 pba = igb_rxpbs_adjust_82580(pba); 2273 break; 2274 case e1000_82576: 2275 pba = rd32(E1000_RXPBS); 2276 pba &= E1000_RXPBS_SIZE_MASK_82576; 2277 break; 2278 case e1000_82575: 2279 case e1000_i210: 2280 case e1000_i211: 2281 default: 2282 pba = E1000_PBA_34K; 2283 break; 2284 } 2285 2286 if (mac->type == e1000_82575) { 2287 u32 min_rx_space, min_tx_space, needed_tx_space; 2288 2289 /* write Rx PBA so that hardware can report correct Tx PBA */ 2290 wr32(E1000_PBA, pba); 2291 2292 /* To maintain wire speed transmits, the Tx FIFO should be 2293 * large enough to accommodate two full transmit packets, 2294 * rounded up to the next 1KB and expressed in KB. Likewise, 2295 * the Rx FIFO should be large enough to accommodate at least 2296 * one full receive packet and is similarly rounded up and 2297 * expressed in KB. 2298 */ 2299 min_rx_space = DIV_ROUND_UP(MAX_JUMBO_FRAME_SIZE, 1024); 2300 2301 /* The Tx FIFO also stores 16 bytes of information about the Tx 2302 * but don't include Ethernet FCS because hardware appends it. 2303 * We only need to round down to the nearest 512 byte block 2304 * count since the value we care about is 2 frames, not 1. 2305 */ 2306 min_tx_space = adapter->max_frame_size; 2307 min_tx_space += sizeof(union e1000_adv_tx_desc) - ETH_FCS_LEN; 2308 min_tx_space = DIV_ROUND_UP(min_tx_space, 512); 2309 2310 /* upper 16 bits has Tx packet buffer allocation size in KB */ 2311 needed_tx_space = min_tx_space - (rd32(E1000_PBA) >> 16); 2312 2313 /* If current Tx allocation is less than the min Tx FIFO size, 2314 * and the min Tx FIFO size is less than the current Rx FIFO 2315 * allocation, take space away from current Rx allocation. 2316 */ 2317 if (needed_tx_space < pba) { 2318 pba -= needed_tx_space; 2319 2320 /* if short on Rx space, Rx wins and must trump Tx 2321 * adjustment 2322 */ 2323 if (pba < min_rx_space) 2324 pba = min_rx_space; 2325 } 2326 2327 /* adjust PBA for jumbo frames */ 2328 wr32(E1000_PBA, pba); 2329 } 2330 2331 /* flow control settings 2332 * The high water mark must be low enough to fit one full frame 2333 * after transmitting the pause frame. As such we must have enough 2334 * space to allow for us to complete our current transmit and then 2335 * receive the frame that is in progress from the link partner. 2336 * Set it to: 2337 * - the full Rx FIFO size minus one full Tx plus one full Rx frame 2338 */ 2339 hwm = (pba << 10) - (adapter->max_frame_size + MAX_JUMBO_FRAME_SIZE); 2340 2341 fc->high_water = hwm & 0xFFFFFFF0; /* 16-byte granularity */ 2342 fc->low_water = fc->high_water - 16; 2343 fc->pause_time = 0xFFFF; 2344 fc->send_xon = 1; 2345 fc->current_mode = fc->requested_mode; 2346 2347 /* disable receive for all VFs and wait one second */ 2348 if (adapter->vfs_allocated_count) { 2349 int i; 2350 2351 for (i = 0 ; i < adapter->vfs_allocated_count; i++) 2352 adapter->vf_data[i].flags &= IGB_VF_FLAG_PF_SET_MAC; 2353 2354 /* ping all the active vfs to let them know we are going down */ 2355 igb_ping_all_vfs(adapter); 2356 2357 /* disable transmits and receives */ 2358 wr32(E1000_VFRE, 0); 2359 wr32(E1000_VFTE, 0); 2360 } 2361 2362 /* Allow time for pending master requests to run */ 2363 hw->mac.ops.reset_hw(hw); 2364 wr32(E1000_WUC, 0); 2365 2366 if (adapter->flags & IGB_FLAG_MEDIA_RESET) { 2367 /* need to resetup here after media swap */ 2368 adapter->ei.get_invariants(hw); 2369 adapter->flags &= ~IGB_FLAG_MEDIA_RESET; 2370 } 2371 if ((mac->type == e1000_82575 || mac->type == e1000_i350) && 2372 (adapter->flags & IGB_FLAG_MAS_ENABLE)) { 2373 igb_enable_mas(adapter); 2374 } 2375 if (hw->mac.ops.init_hw(hw)) 2376 dev_err(&pdev->dev, "Hardware Error\n"); 2377 2378 /* RAR registers were cleared during init_hw, clear mac table */ 2379 igb_flush_mac_table(adapter); 2380 __dev_uc_unsync(adapter->netdev, NULL); 2381 2382 /* Recover default RAR entry */ 2383 igb_set_default_mac_filter(adapter); 2384 2385 /* Flow control settings reset on hardware reset, so guarantee flow 2386 * control is off when forcing speed. 2387 */ 2388 if (!hw->mac.autoneg) 2389 igb_force_mac_fc(hw); 2390 2391 igb_init_dmac(adapter, pba); 2392 #ifdef CONFIG_IGB_HWMON 2393 /* Re-initialize the thermal sensor on i350 devices. */ 2394 if (!test_bit(__IGB_DOWN, &adapter->state)) { 2395 if (mac->type == e1000_i350 && hw->bus.func == 0) { 2396 /* If present, re-initialize the external thermal sensor 2397 * interface. 2398 */ 2399 if (adapter->ets) 2400 mac->ops.init_thermal_sensor_thresh(hw); 2401 } 2402 } 2403 #endif 2404 /* Re-establish EEE setting */ 2405 if (hw->phy.media_type == e1000_media_type_copper) { 2406 switch (mac->type) { 2407 case e1000_i350: 2408 case e1000_i210: 2409 case e1000_i211: 2410 igb_set_eee_i350(hw, true, true); 2411 break; 2412 case e1000_i354: 2413 igb_set_eee_i354(hw, true, true); 2414 break; 2415 default: 2416 break; 2417 } 2418 } 2419 if (!netif_running(adapter->netdev)) 2420 igb_power_down_link(adapter); 2421 2422 igb_update_mng_vlan(adapter); 2423 2424 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ 2425 wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); 2426 2427 /* Re-enable PTP, where applicable. */ 2428 if (adapter->ptp_flags & IGB_PTP_ENABLED) 2429 igb_ptp_reset(adapter); 2430 2431 igb_get_phy_info(hw); 2432 } 2433 2434 static netdev_features_t igb_fix_features(struct net_device *netdev, 2435 netdev_features_t features) 2436 { 2437 /* Since there is no support for separate Rx/Tx vlan accel 2438 * enable/disable make sure Tx flag is always in same state as Rx. 2439 */ 2440 if (features & NETIF_F_HW_VLAN_CTAG_RX) 2441 features |= NETIF_F_HW_VLAN_CTAG_TX; 2442 else 2443 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2444 2445 return features; 2446 } 2447 2448 static int igb_set_features(struct net_device *netdev, 2449 netdev_features_t features) 2450 { 2451 netdev_features_t changed = netdev->features ^ features; 2452 struct igb_adapter *adapter = netdev_priv(netdev); 2453 2454 if (changed & NETIF_F_HW_VLAN_CTAG_RX) 2455 igb_vlan_mode(netdev, features); 2456 2457 if (!(changed & (NETIF_F_RXALL | NETIF_F_NTUPLE))) 2458 return 0; 2459 2460 if (!(features & NETIF_F_NTUPLE)) { 2461 struct hlist_node *node2; 2462 struct igb_nfc_filter *rule; 2463 2464 spin_lock(&adapter->nfc_lock); 2465 hlist_for_each_entry_safe(rule, node2, 2466 &adapter->nfc_filter_list, nfc_node) { 2467 igb_erase_filter(adapter, rule); 2468 hlist_del(&rule->nfc_node); 2469 kfree(rule); 2470 } 2471 spin_unlock(&adapter->nfc_lock); 2472 adapter->nfc_filter_count = 0; 2473 } 2474 2475 netdev->features = features; 2476 2477 if (netif_running(netdev)) 2478 igb_reinit_locked(adapter); 2479 else 2480 igb_reset(adapter); 2481 2482 return 1; 2483 } 2484 2485 static int igb_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 2486 struct net_device *dev, 2487 const unsigned char *addr, u16 vid, 2488 u16 flags, 2489 struct netlink_ext_ack *extack) 2490 { 2491 /* guarantee we can provide a unique filter for the unicast address */ 2492 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) { 2493 struct igb_adapter *adapter = netdev_priv(dev); 2494 int vfn = adapter->vfs_allocated_count; 2495 2496 if (netdev_uc_count(dev) >= igb_available_rars(adapter, vfn)) 2497 return -ENOMEM; 2498 } 2499 2500 return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags); 2501 } 2502 2503 #define IGB_MAX_MAC_HDR_LEN 127 2504 #define IGB_MAX_NETWORK_HDR_LEN 511 2505 2506 static netdev_features_t 2507 igb_features_check(struct sk_buff *skb, struct net_device *dev, 2508 netdev_features_t features) 2509 { 2510 unsigned int network_hdr_len, mac_hdr_len; 2511 2512 /* Make certain the headers can be described by a context descriptor */ 2513 mac_hdr_len = skb_network_header(skb) - skb->data; 2514 if (unlikely(mac_hdr_len > IGB_MAX_MAC_HDR_LEN)) 2515 return features & ~(NETIF_F_HW_CSUM | 2516 NETIF_F_SCTP_CRC | 2517 NETIF_F_GSO_UDP_L4 | 2518 NETIF_F_HW_VLAN_CTAG_TX | 2519 NETIF_F_TSO | 2520 NETIF_F_TSO6); 2521 2522 network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); 2523 if (unlikely(network_hdr_len > IGB_MAX_NETWORK_HDR_LEN)) 2524 return features & ~(NETIF_F_HW_CSUM | 2525 NETIF_F_SCTP_CRC | 2526 NETIF_F_GSO_UDP_L4 | 2527 NETIF_F_TSO | 2528 NETIF_F_TSO6); 2529 2530 /* We can only support IPV4 TSO in tunnels if we can mangle the 2531 * inner IP ID field, so strip TSO if MANGLEID is not supported. 2532 */ 2533 if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) 2534 features &= ~NETIF_F_TSO; 2535 2536 return features; 2537 } 2538 2539 static void igb_offload_apply(struct igb_adapter *adapter, s32 queue) 2540 { 2541 if (!is_fqtss_enabled(adapter)) { 2542 enable_fqtss(adapter, true); 2543 return; 2544 } 2545 2546 igb_config_tx_modes(adapter, queue); 2547 2548 if (!is_any_cbs_enabled(adapter) && !is_any_txtime_enabled(adapter)) 2549 enable_fqtss(adapter, false); 2550 } 2551 2552 static int igb_offload_cbs(struct igb_adapter *adapter, 2553 struct tc_cbs_qopt_offload *qopt) 2554 { 2555 struct e1000_hw *hw = &adapter->hw; 2556 int err; 2557 2558 /* CBS offloading is only supported by i210 controller. */ 2559 if (hw->mac.type != e1000_i210) 2560 return -EOPNOTSUPP; 2561 2562 /* CBS offloading is only supported by queue 0 and queue 1. */ 2563 if (qopt->queue < 0 || qopt->queue > 1) 2564 return -EINVAL; 2565 2566 err = igb_save_cbs_params(adapter, qopt->queue, qopt->enable, 2567 qopt->idleslope, qopt->sendslope, 2568 qopt->hicredit, qopt->locredit); 2569 if (err) 2570 return err; 2571 2572 igb_offload_apply(adapter, qopt->queue); 2573 2574 return 0; 2575 } 2576 2577 #define ETHER_TYPE_FULL_MASK ((__force __be16)~0) 2578 #define VLAN_PRIO_FULL_MASK (0x07) 2579 2580 static int igb_parse_cls_flower(struct igb_adapter *adapter, 2581 struct flow_cls_offload *f, 2582 int traffic_class, 2583 struct igb_nfc_filter *input) 2584 { 2585 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 2586 struct flow_dissector *dissector = rule->match.dissector; 2587 struct netlink_ext_ack *extack = f->common.extack; 2588 2589 if (dissector->used_keys & 2590 ~(BIT(FLOW_DISSECTOR_KEY_BASIC) | 2591 BIT(FLOW_DISSECTOR_KEY_CONTROL) | 2592 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 2593 BIT(FLOW_DISSECTOR_KEY_VLAN))) { 2594 NL_SET_ERR_MSG_MOD(extack, 2595 "Unsupported key used, only BASIC, CONTROL, ETH_ADDRS and VLAN are supported"); 2596 return -EOPNOTSUPP; 2597 } 2598 2599 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 2600 struct flow_match_eth_addrs match; 2601 2602 flow_rule_match_eth_addrs(rule, &match); 2603 if (!is_zero_ether_addr(match.mask->dst)) { 2604 if (!is_broadcast_ether_addr(match.mask->dst)) { 2605 NL_SET_ERR_MSG_MOD(extack, "Only full masks are supported for destination MAC address"); 2606 return -EINVAL; 2607 } 2608 2609 input->filter.match_flags |= 2610 IGB_FILTER_FLAG_DST_MAC_ADDR; 2611 ether_addr_copy(input->filter.dst_addr, match.key->dst); 2612 } 2613 2614 if (!is_zero_ether_addr(match.mask->src)) { 2615 if (!is_broadcast_ether_addr(match.mask->src)) { 2616 NL_SET_ERR_MSG_MOD(extack, "Only full masks are supported for source MAC address"); 2617 return -EINVAL; 2618 } 2619 2620 input->filter.match_flags |= 2621 IGB_FILTER_FLAG_SRC_MAC_ADDR; 2622 ether_addr_copy(input->filter.src_addr, match.key->src); 2623 } 2624 } 2625 2626 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 2627 struct flow_match_basic match; 2628 2629 flow_rule_match_basic(rule, &match); 2630 if (match.mask->n_proto) { 2631 if (match.mask->n_proto != ETHER_TYPE_FULL_MASK) { 2632 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for EtherType filter"); 2633 return -EINVAL; 2634 } 2635 2636 input->filter.match_flags |= IGB_FILTER_FLAG_ETHER_TYPE; 2637 input->filter.etype = match.key->n_proto; 2638 } 2639 } 2640 2641 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 2642 struct flow_match_vlan match; 2643 2644 flow_rule_match_vlan(rule, &match); 2645 if (match.mask->vlan_priority) { 2646 if (match.mask->vlan_priority != VLAN_PRIO_FULL_MASK) { 2647 NL_SET_ERR_MSG_MOD(extack, "Only full mask is supported for VLAN priority"); 2648 return -EINVAL; 2649 } 2650 2651 input->filter.match_flags |= IGB_FILTER_FLAG_VLAN_TCI; 2652 input->filter.vlan_tci = 2653 (__force __be16)match.key->vlan_priority; 2654 } 2655 } 2656 2657 input->action = traffic_class; 2658 input->cookie = f->cookie; 2659 2660 return 0; 2661 } 2662 2663 static int igb_configure_clsflower(struct igb_adapter *adapter, 2664 struct flow_cls_offload *cls_flower) 2665 { 2666 struct netlink_ext_ack *extack = cls_flower->common.extack; 2667 struct igb_nfc_filter *filter, *f; 2668 int err, tc; 2669 2670 tc = tc_classid_to_hwtc(adapter->netdev, cls_flower->classid); 2671 if (tc < 0) { 2672 NL_SET_ERR_MSG_MOD(extack, "Invalid traffic class"); 2673 return -EINVAL; 2674 } 2675 2676 filter = kzalloc(sizeof(*filter), GFP_KERNEL); 2677 if (!filter) 2678 return -ENOMEM; 2679 2680 err = igb_parse_cls_flower(adapter, cls_flower, tc, filter); 2681 if (err < 0) 2682 goto err_parse; 2683 2684 spin_lock(&adapter->nfc_lock); 2685 2686 hlist_for_each_entry(f, &adapter->nfc_filter_list, nfc_node) { 2687 if (!memcmp(&f->filter, &filter->filter, sizeof(f->filter))) { 2688 err = -EEXIST; 2689 NL_SET_ERR_MSG_MOD(extack, 2690 "This filter is already set in ethtool"); 2691 goto err_locked; 2692 } 2693 } 2694 2695 hlist_for_each_entry(f, &adapter->cls_flower_list, nfc_node) { 2696 if (!memcmp(&f->filter, &filter->filter, sizeof(f->filter))) { 2697 err = -EEXIST; 2698 NL_SET_ERR_MSG_MOD(extack, 2699 "This filter is already set in cls_flower"); 2700 goto err_locked; 2701 } 2702 } 2703 2704 err = igb_add_filter(adapter, filter); 2705 if (err < 0) { 2706 NL_SET_ERR_MSG_MOD(extack, "Could not add filter to the adapter"); 2707 goto err_locked; 2708 } 2709 2710 hlist_add_head(&filter->nfc_node, &adapter->cls_flower_list); 2711 2712 spin_unlock(&adapter->nfc_lock); 2713 2714 return 0; 2715 2716 err_locked: 2717 spin_unlock(&adapter->nfc_lock); 2718 2719 err_parse: 2720 kfree(filter); 2721 2722 return err; 2723 } 2724 2725 static int igb_delete_clsflower(struct igb_adapter *adapter, 2726 struct flow_cls_offload *cls_flower) 2727 { 2728 struct igb_nfc_filter *filter; 2729 int err; 2730 2731 spin_lock(&adapter->nfc_lock); 2732 2733 hlist_for_each_entry(filter, &adapter->cls_flower_list, nfc_node) 2734 if (filter->cookie == cls_flower->cookie) 2735 break; 2736 2737 if (!filter) { 2738 err = -ENOENT; 2739 goto out; 2740 } 2741 2742 err = igb_erase_filter(adapter, filter); 2743 if (err < 0) 2744 goto out; 2745 2746 hlist_del(&filter->nfc_node); 2747 kfree(filter); 2748 2749 out: 2750 spin_unlock(&adapter->nfc_lock); 2751 2752 return err; 2753 } 2754 2755 static int igb_setup_tc_cls_flower(struct igb_adapter *adapter, 2756 struct flow_cls_offload *cls_flower) 2757 { 2758 switch (cls_flower->command) { 2759 case FLOW_CLS_REPLACE: 2760 return igb_configure_clsflower(adapter, cls_flower); 2761 case FLOW_CLS_DESTROY: 2762 return igb_delete_clsflower(adapter, cls_flower); 2763 case FLOW_CLS_STATS: 2764 return -EOPNOTSUPP; 2765 default: 2766 return -EOPNOTSUPP; 2767 } 2768 } 2769 2770 static int igb_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 2771 void *cb_priv) 2772 { 2773 struct igb_adapter *adapter = cb_priv; 2774 2775 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 2776 return -EOPNOTSUPP; 2777 2778 switch (type) { 2779 case TC_SETUP_CLSFLOWER: 2780 return igb_setup_tc_cls_flower(adapter, type_data); 2781 2782 default: 2783 return -EOPNOTSUPP; 2784 } 2785 } 2786 2787 static int igb_offload_txtime(struct igb_adapter *adapter, 2788 struct tc_etf_qopt_offload *qopt) 2789 { 2790 struct e1000_hw *hw = &adapter->hw; 2791 int err; 2792 2793 /* Launchtime offloading is only supported by i210 controller. */ 2794 if (hw->mac.type != e1000_i210) 2795 return -EOPNOTSUPP; 2796 2797 /* Launchtime offloading is only supported by queues 0 and 1. */ 2798 if (qopt->queue < 0 || qopt->queue > 1) 2799 return -EINVAL; 2800 2801 err = igb_save_txtime_params(adapter, qopt->queue, qopt->enable); 2802 if (err) 2803 return err; 2804 2805 igb_offload_apply(adapter, qopt->queue); 2806 2807 return 0; 2808 } 2809 2810 static LIST_HEAD(igb_block_cb_list); 2811 2812 static int igb_setup_tc(struct net_device *dev, enum tc_setup_type type, 2813 void *type_data) 2814 { 2815 struct igb_adapter *adapter = netdev_priv(dev); 2816 2817 switch (type) { 2818 case TC_SETUP_QDISC_CBS: 2819 return igb_offload_cbs(adapter, type_data); 2820 case TC_SETUP_BLOCK: 2821 return flow_block_cb_setup_simple(type_data, 2822 &igb_block_cb_list, 2823 igb_setup_tc_block_cb, 2824 adapter, adapter, true); 2825 2826 case TC_SETUP_QDISC_ETF: 2827 return igb_offload_txtime(adapter, type_data); 2828 2829 default: 2830 return -EOPNOTSUPP; 2831 } 2832 } 2833 2834 static int igb_xdp_setup(struct net_device *dev, struct netdev_bpf *bpf) 2835 { 2836 int i, frame_size = dev->mtu + IGB_ETH_PKT_HDR_PAD; 2837 struct igb_adapter *adapter = netdev_priv(dev); 2838 struct bpf_prog *prog = bpf->prog, *old_prog; 2839 bool running = netif_running(dev); 2840 bool need_reset; 2841 2842 /* verify igb ring attributes are sufficient for XDP */ 2843 for (i = 0; i < adapter->num_rx_queues; i++) { 2844 struct igb_ring *ring = adapter->rx_ring[i]; 2845 2846 if (frame_size > igb_rx_bufsz(ring)) { 2847 NL_SET_ERR_MSG_MOD(bpf->extack, 2848 "The RX buffer size is too small for the frame size"); 2849 netdev_warn(dev, "XDP RX buffer size %d is too small for the frame size %d\n", 2850 igb_rx_bufsz(ring), frame_size); 2851 return -EINVAL; 2852 } 2853 } 2854 2855 old_prog = xchg(&adapter->xdp_prog, prog); 2856 need_reset = (!!prog != !!old_prog); 2857 2858 /* device is up and bpf is added/removed, must setup the RX queues */ 2859 if (need_reset && running) { 2860 igb_close(dev); 2861 } else { 2862 for (i = 0; i < adapter->num_rx_queues; i++) 2863 (void)xchg(&adapter->rx_ring[i]->xdp_prog, 2864 adapter->xdp_prog); 2865 } 2866 2867 if (old_prog) 2868 bpf_prog_put(old_prog); 2869 2870 /* bpf is just replaced, RXQ and MTU are already setup */ 2871 if (!need_reset) 2872 return 0; 2873 2874 if (running) 2875 igb_open(dev); 2876 2877 return 0; 2878 } 2879 2880 static int igb_xdp(struct net_device *dev, struct netdev_bpf *xdp) 2881 { 2882 switch (xdp->command) { 2883 case XDP_SETUP_PROG: 2884 return igb_xdp_setup(dev, xdp); 2885 default: 2886 return -EINVAL; 2887 } 2888 } 2889 2890 static void igb_xdp_ring_update_tail(struct igb_ring *ring) 2891 { 2892 /* Force memory writes to complete before letting h/w know there 2893 * are new descriptors to fetch. 2894 */ 2895 wmb(); 2896 writel(ring->next_to_use, ring->tail); 2897 } 2898 2899 static struct igb_ring *igb_xdp_tx_queue_mapping(struct igb_adapter *adapter) 2900 { 2901 unsigned int r_idx = smp_processor_id(); 2902 2903 if (r_idx >= adapter->num_tx_queues) 2904 r_idx = r_idx % adapter->num_tx_queues; 2905 2906 return adapter->tx_ring[r_idx]; 2907 } 2908 2909 static int igb_xdp_xmit_back(struct igb_adapter *adapter, struct xdp_buff *xdp) 2910 { 2911 struct xdp_frame *xdpf = xdp_convert_buff_to_frame(xdp); 2912 int cpu = smp_processor_id(); 2913 struct igb_ring *tx_ring; 2914 struct netdev_queue *nq; 2915 u32 ret; 2916 2917 if (unlikely(!xdpf)) 2918 return IGB_XDP_CONSUMED; 2919 2920 /* During program transitions its possible adapter->xdp_prog is assigned 2921 * but ring has not been configured yet. In this case simply abort xmit. 2922 */ 2923 tx_ring = adapter->xdp_prog ? igb_xdp_tx_queue_mapping(adapter) : NULL; 2924 if (unlikely(!tx_ring)) 2925 return IGB_XDP_CONSUMED; 2926 2927 nq = txring_txq(tx_ring); 2928 __netif_tx_lock(nq, cpu); 2929 /* Avoid transmit queue timeout since we share it with the slow path */ 2930 txq_trans_cond_update(nq); 2931 ret = igb_xmit_xdp_ring(adapter, tx_ring, xdpf); 2932 __netif_tx_unlock(nq); 2933 2934 return ret; 2935 } 2936 2937 static int igb_xdp_xmit(struct net_device *dev, int n, 2938 struct xdp_frame **frames, u32 flags) 2939 { 2940 struct igb_adapter *adapter = netdev_priv(dev); 2941 int cpu = smp_processor_id(); 2942 struct igb_ring *tx_ring; 2943 struct netdev_queue *nq; 2944 int nxmit = 0; 2945 int i; 2946 2947 if (unlikely(test_bit(__IGB_DOWN, &adapter->state))) 2948 return -ENETDOWN; 2949 2950 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 2951 return -EINVAL; 2952 2953 /* During program transitions its possible adapter->xdp_prog is assigned 2954 * but ring has not been configured yet. In this case simply abort xmit. 2955 */ 2956 tx_ring = adapter->xdp_prog ? igb_xdp_tx_queue_mapping(adapter) : NULL; 2957 if (unlikely(!tx_ring)) 2958 return -ENXIO; 2959 2960 nq = txring_txq(tx_ring); 2961 __netif_tx_lock(nq, cpu); 2962 2963 /* Avoid transmit queue timeout since we share it with the slow path */ 2964 txq_trans_cond_update(nq); 2965 2966 for (i = 0; i < n; i++) { 2967 struct xdp_frame *xdpf = frames[i]; 2968 int err; 2969 2970 err = igb_xmit_xdp_ring(adapter, tx_ring, xdpf); 2971 if (err != IGB_XDP_TX) 2972 break; 2973 nxmit++; 2974 } 2975 2976 __netif_tx_unlock(nq); 2977 2978 if (unlikely(flags & XDP_XMIT_FLUSH)) 2979 igb_xdp_ring_update_tail(tx_ring); 2980 2981 return nxmit; 2982 } 2983 2984 static const struct net_device_ops igb_netdev_ops = { 2985 .ndo_open = igb_open, 2986 .ndo_stop = igb_close, 2987 .ndo_start_xmit = igb_xmit_frame, 2988 .ndo_get_stats64 = igb_get_stats64, 2989 .ndo_set_rx_mode = igb_set_rx_mode, 2990 .ndo_set_mac_address = igb_set_mac, 2991 .ndo_change_mtu = igb_change_mtu, 2992 .ndo_eth_ioctl = igb_ioctl, 2993 .ndo_tx_timeout = igb_tx_timeout, 2994 .ndo_validate_addr = eth_validate_addr, 2995 .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, 2996 .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, 2997 .ndo_set_vf_mac = igb_ndo_set_vf_mac, 2998 .ndo_set_vf_vlan = igb_ndo_set_vf_vlan, 2999 .ndo_set_vf_rate = igb_ndo_set_vf_bw, 3000 .ndo_set_vf_spoofchk = igb_ndo_set_vf_spoofchk, 3001 .ndo_set_vf_trust = igb_ndo_set_vf_trust, 3002 .ndo_get_vf_config = igb_ndo_get_vf_config, 3003 .ndo_fix_features = igb_fix_features, 3004 .ndo_set_features = igb_set_features, 3005 .ndo_fdb_add = igb_ndo_fdb_add, 3006 .ndo_features_check = igb_features_check, 3007 .ndo_setup_tc = igb_setup_tc, 3008 .ndo_bpf = igb_xdp, 3009 .ndo_xdp_xmit = igb_xdp_xmit, 3010 }; 3011 3012 /** 3013 * igb_set_fw_version - Configure version string for ethtool 3014 * @adapter: adapter struct 3015 **/ 3016 void igb_set_fw_version(struct igb_adapter *adapter) 3017 { 3018 struct e1000_hw *hw = &adapter->hw; 3019 struct e1000_fw_version fw; 3020 3021 igb_get_fw_version(hw, &fw); 3022 3023 switch (hw->mac.type) { 3024 case e1000_i210: 3025 case e1000_i211: 3026 if (!(igb_get_flash_presence_i210(hw))) { 3027 snprintf(adapter->fw_version, 3028 sizeof(adapter->fw_version), 3029 "%2d.%2d-%d", 3030 fw.invm_major, fw.invm_minor, 3031 fw.invm_img_type); 3032 break; 3033 } 3034 fallthrough; 3035 default: 3036 /* if option is rom valid, display its version too */ 3037 if (fw.or_valid) { 3038 snprintf(adapter->fw_version, 3039 sizeof(adapter->fw_version), 3040 "%d.%d, 0x%08x, %d.%d.%d", 3041 fw.eep_major, fw.eep_minor, fw.etrack_id, 3042 fw.or_major, fw.or_build, fw.or_patch); 3043 /* no option rom */ 3044 } else if (fw.etrack_id != 0X0000) { 3045 snprintf(adapter->fw_version, 3046 sizeof(adapter->fw_version), 3047 "%d.%d, 0x%08x", 3048 fw.eep_major, fw.eep_minor, fw.etrack_id); 3049 } else { 3050 snprintf(adapter->fw_version, 3051 sizeof(adapter->fw_version), 3052 "%d.%d.%d", 3053 fw.eep_major, fw.eep_minor, fw.eep_build); 3054 } 3055 break; 3056 } 3057 } 3058 3059 /** 3060 * igb_init_mas - init Media Autosense feature if enabled in the NVM 3061 * 3062 * @adapter: adapter struct 3063 **/ 3064 static void igb_init_mas(struct igb_adapter *adapter) 3065 { 3066 struct e1000_hw *hw = &adapter->hw; 3067 u16 eeprom_data; 3068 3069 hw->nvm.ops.read(hw, NVM_COMPAT, 1, &eeprom_data); 3070 switch (hw->bus.func) { 3071 case E1000_FUNC_0: 3072 if (eeprom_data & IGB_MAS_ENABLE_0) { 3073 adapter->flags |= IGB_FLAG_MAS_ENABLE; 3074 netdev_info(adapter->netdev, 3075 "MAS: Enabling Media Autosense for port %d\n", 3076 hw->bus.func); 3077 } 3078 break; 3079 case E1000_FUNC_1: 3080 if (eeprom_data & IGB_MAS_ENABLE_1) { 3081 adapter->flags |= IGB_FLAG_MAS_ENABLE; 3082 netdev_info(adapter->netdev, 3083 "MAS: Enabling Media Autosense for port %d\n", 3084 hw->bus.func); 3085 } 3086 break; 3087 case E1000_FUNC_2: 3088 if (eeprom_data & IGB_MAS_ENABLE_2) { 3089 adapter->flags |= IGB_FLAG_MAS_ENABLE; 3090 netdev_info(adapter->netdev, 3091 "MAS: Enabling Media Autosense for port %d\n", 3092 hw->bus.func); 3093 } 3094 break; 3095 case E1000_FUNC_3: 3096 if (eeprom_data & IGB_MAS_ENABLE_3) { 3097 adapter->flags |= IGB_FLAG_MAS_ENABLE; 3098 netdev_info(adapter->netdev, 3099 "MAS: Enabling Media Autosense for port %d\n", 3100 hw->bus.func); 3101 } 3102 break; 3103 default: 3104 /* Shouldn't get here */ 3105 netdev_err(adapter->netdev, 3106 "MAS: Invalid port configuration, returning\n"); 3107 break; 3108 } 3109 } 3110 3111 /** 3112 * igb_init_i2c - Init I2C interface 3113 * @adapter: pointer to adapter structure 3114 **/ 3115 static s32 igb_init_i2c(struct igb_adapter *adapter) 3116 { 3117 struct e1000_hw *hw = &adapter->hw; 3118 s32 status = 0; 3119 s32 i2cctl; 3120 3121 /* I2C interface supported on i350 devices */ 3122 if (adapter->hw.mac.type != e1000_i350) 3123 return 0; 3124 3125 i2cctl = rd32(E1000_I2CPARAMS); 3126 i2cctl |= E1000_I2CBB_EN 3127 | E1000_I2C_CLK_OUT | E1000_I2C_CLK_OE_N 3128 | E1000_I2C_DATA_OUT | E1000_I2C_DATA_OE_N; 3129 wr32(E1000_I2CPARAMS, i2cctl); 3130 wrfl(); 3131 3132 /* Initialize the i2c bus which is controlled by the registers. 3133 * This bus will use the i2c_algo_bit structure that implements 3134 * the protocol through toggling of the 4 bits in the register. 3135 */ 3136 adapter->i2c_adap.owner = THIS_MODULE; 3137 adapter->i2c_algo = igb_i2c_algo; 3138 adapter->i2c_algo.data = adapter; 3139 adapter->i2c_adap.algo_data = &adapter->i2c_algo; 3140 adapter->i2c_adap.dev.parent = &adapter->pdev->dev; 3141 strlcpy(adapter->i2c_adap.name, "igb BB", 3142 sizeof(adapter->i2c_adap.name)); 3143 status = i2c_bit_add_bus(&adapter->i2c_adap); 3144 return status; 3145 } 3146 3147 /** 3148 * igb_probe - Device Initialization Routine 3149 * @pdev: PCI device information struct 3150 * @ent: entry in igb_pci_tbl 3151 * 3152 * Returns 0 on success, negative on failure 3153 * 3154 * igb_probe initializes an adapter identified by a pci_dev structure. 3155 * The OS initialization, configuring of the adapter private structure, 3156 * and a hardware reset occur. 3157 **/ 3158 static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 3159 { 3160 struct net_device *netdev; 3161 struct igb_adapter *adapter; 3162 struct e1000_hw *hw; 3163 u16 eeprom_data = 0; 3164 s32 ret_val; 3165 static int global_quad_port_a; /* global quad port a indication */ 3166 const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; 3167 int err, pci_using_dac; 3168 u8 part_str[E1000_PBANUM_LENGTH]; 3169 3170 /* Catch broken hardware that put the wrong VF device ID in 3171 * the PCIe SR-IOV capability. 3172 */ 3173 if (pdev->is_virtfn) { 3174 WARN(1, KERN_ERR "%s (%x:%x) should not be a VF!\n", 3175 pci_name(pdev), pdev->vendor, pdev->device); 3176 return -EINVAL; 3177 } 3178 3179 err = pci_enable_device_mem(pdev); 3180 if (err) 3181 return err; 3182 3183 pci_using_dac = 0; 3184 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 3185 if (!err) { 3186 pci_using_dac = 1; 3187 } else { 3188 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 3189 if (err) { 3190 dev_err(&pdev->dev, 3191 "No usable DMA configuration, aborting\n"); 3192 goto err_dma; 3193 } 3194 } 3195 3196 err = pci_request_mem_regions(pdev, igb_driver_name); 3197 if (err) 3198 goto err_pci_reg; 3199 3200 pci_enable_pcie_error_reporting(pdev); 3201 3202 pci_set_master(pdev); 3203 pci_save_state(pdev); 3204 3205 err = -ENOMEM; 3206 netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), 3207 IGB_MAX_TX_QUEUES); 3208 if (!netdev) 3209 goto err_alloc_etherdev; 3210 3211 SET_NETDEV_DEV(netdev, &pdev->dev); 3212 3213 pci_set_drvdata(pdev, netdev); 3214 adapter = netdev_priv(netdev); 3215 adapter->netdev = netdev; 3216 adapter->pdev = pdev; 3217 hw = &adapter->hw; 3218 hw->back = adapter; 3219 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); 3220 3221 err = -EIO; 3222 adapter->io_addr = pci_iomap(pdev, 0, 0); 3223 if (!adapter->io_addr) 3224 goto err_ioremap; 3225 /* hw->hw_addr can be altered, we'll use adapter->io_addr for unmap */ 3226 hw->hw_addr = adapter->io_addr; 3227 3228 netdev->netdev_ops = &igb_netdev_ops; 3229 igb_set_ethtool_ops(netdev); 3230 netdev->watchdog_timeo = 5 * HZ; 3231 3232 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); 3233 3234 netdev->mem_start = pci_resource_start(pdev, 0); 3235 netdev->mem_end = pci_resource_end(pdev, 0); 3236 3237 /* PCI config space info */ 3238 hw->vendor_id = pdev->vendor; 3239 hw->device_id = pdev->device; 3240 hw->revision_id = pdev->revision; 3241 hw->subsystem_vendor_id = pdev->subsystem_vendor; 3242 hw->subsystem_device_id = pdev->subsystem_device; 3243 3244 /* Copy the default MAC, PHY and NVM function pointers */ 3245 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); 3246 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); 3247 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); 3248 /* Initialize skew-specific constants */ 3249 err = ei->get_invariants(hw); 3250 if (err) 3251 goto err_sw_init; 3252 3253 /* setup the private structure */ 3254 err = igb_sw_init(adapter); 3255 if (err) 3256 goto err_sw_init; 3257 3258 igb_get_bus_info_pcie(hw); 3259 3260 hw->phy.autoneg_wait_to_complete = false; 3261 3262 /* Copper options */ 3263 if (hw->phy.media_type == e1000_media_type_copper) { 3264 hw->phy.mdix = AUTO_ALL_MODES; 3265 hw->phy.disable_polarity_correction = false; 3266 hw->phy.ms_type = e1000_ms_hw_default; 3267 } 3268 3269 if (igb_check_reset_block(hw)) 3270 dev_info(&pdev->dev, 3271 "PHY reset is blocked due to SOL/IDER session.\n"); 3272 3273 /* features is initialized to 0 in allocation, it might have bits 3274 * set by igb_sw_init so we should use an or instead of an 3275 * assignment. 3276 */ 3277 netdev->features |= NETIF_F_SG | 3278 NETIF_F_TSO | 3279 NETIF_F_TSO6 | 3280 NETIF_F_RXHASH | 3281 NETIF_F_RXCSUM | 3282 NETIF_F_HW_CSUM; 3283 3284 if (hw->mac.type >= e1000_82576) 3285 netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_GSO_UDP_L4; 3286 3287 if (hw->mac.type >= e1000_i350) 3288 netdev->features |= NETIF_F_HW_TC; 3289 3290 #define IGB_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \ 3291 NETIF_F_GSO_GRE_CSUM | \ 3292 NETIF_F_GSO_IPXIP4 | \ 3293 NETIF_F_GSO_IPXIP6 | \ 3294 NETIF_F_GSO_UDP_TUNNEL | \ 3295 NETIF_F_GSO_UDP_TUNNEL_CSUM) 3296 3297 netdev->gso_partial_features = IGB_GSO_PARTIAL_FEATURES; 3298 netdev->features |= NETIF_F_GSO_PARTIAL | IGB_GSO_PARTIAL_FEATURES; 3299 3300 /* copy netdev features into list of user selectable features */ 3301 netdev->hw_features |= netdev->features | 3302 NETIF_F_HW_VLAN_CTAG_RX | 3303 NETIF_F_HW_VLAN_CTAG_TX | 3304 NETIF_F_RXALL; 3305 3306 if (hw->mac.type >= e1000_i350) 3307 netdev->hw_features |= NETIF_F_NTUPLE; 3308 3309 if (pci_using_dac) 3310 netdev->features |= NETIF_F_HIGHDMA; 3311 3312 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; 3313 netdev->mpls_features |= NETIF_F_HW_CSUM; 3314 netdev->hw_enc_features |= netdev->vlan_features; 3315 3316 /* set this bit last since it cannot be part of vlan_features */ 3317 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | 3318 NETIF_F_HW_VLAN_CTAG_RX | 3319 NETIF_F_HW_VLAN_CTAG_TX; 3320 3321 netdev->priv_flags |= IFF_SUPP_NOFCS; 3322 3323 netdev->priv_flags |= IFF_UNICAST_FLT; 3324 3325 /* MTU range: 68 - 9216 */ 3326 netdev->min_mtu = ETH_MIN_MTU; 3327 netdev->max_mtu = MAX_STD_JUMBO_FRAME_SIZE; 3328 3329 adapter->en_mng_pt = igb_enable_mng_pass_thru(hw); 3330 3331 /* before reading the NVM, reset the controller to put the device in a 3332 * known good starting state 3333 */ 3334 hw->mac.ops.reset_hw(hw); 3335 3336 /* make sure the NVM is good , i211/i210 parts can have special NVM 3337 * that doesn't contain a checksum 3338 */ 3339 switch (hw->mac.type) { 3340 case e1000_i210: 3341 case e1000_i211: 3342 if (igb_get_flash_presence_i210(hw)) { 3343 if (hw->nvm.ops.validate(hw) < 0) { 3344 dev_err(&pdev->dev, 3345 "The NVM Checksum Is Not Valid\n"); 3346 err = -EIO; 3347 goto err_eeprom; 3348 } 3349 } 3350 break; 3351 default: 3352 if (hw->nvm.ops.validate(hw) < 0) { 3353 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); 3354 err = -EIO; 3355 goto err_eeprom; 3356 } 3357 break; 3358 } 3359 3360 if (eth_platform_get_mac_address(&pdev->dev, hw->mac.addr)) { 3361 /* copy the MAC address out of the NVM */ 3362 if (hw->mac.ops.read_mac_addr(hw)) 3363 dev_err(&pdev->dev, "NVM Read Error\n"); 3364 } 3365 3366 eth_hw_addr_set(netdev, hw->mac.addr); 3367 3368 if (!is_valid_ether_addr(netdev->dev_addr)) { 3369 dev_err(&pdev->dev, "Invalid MAC Address\n"); 3370 err = -EIO; 3371 goto err_eeprom; 3372 } 3373 3374 igb_set_default_mac_filter(adapter); 3375 3376 /* get firmware version for ethtool -i */ 3377 igb_set_fw_version(adapter); 3378 3379 /* configure RXPBSIZE and TXPBSIZE */ 3380 if (hw->mac.type == e1000_i210) { 3381 wr32(E1000_RXPBS, I210_RXPBSIZE_DEFAULT); 3382 wr32(E1000_TXPBS, I210_TXPBSIZE_DEFAULT); 3383 } 3384 3385 timer_setup(&adapter->watchdog_timer, igb_watchdog, 0); 3386 timer_setup(&adapter->phy_info_timer, igb_update_phy_info, 0); 3387 3388 INIT_WORK(&adapter->reset_task, igb_reset_task); 3389 INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); 3390 3391 /* Initialize link properties that are user-changeable */ 3392 adapter->fc_autoneg = true; 3393 hw->mac.autoneg = true; 3394 hw->phy.autoneg_advertised = 0x2f; 3395 3396 hw->fc.requested_mode = e1000_fc_default; 3397 hw->fc.current_mode = e1000_fc_default; 3398 3399 igb_validate_mdi_setting(hw); 3400 3401 /* By default, support wake on port A */ 3402 if (hw->bus.func == 0) 3403 adapter->flags |= IGB_FLAG_WOL_SUPPORTED; 3404 3405 /* Check the NVM for wake support on non-port A ports */ 3406 if (hw->mac.type >= e1000_82580) 3407 hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A + 3408 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1, 3409 &eeprom_data); 3410 else if (hw->bus.func == 1) 3411 hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); 3412 3413 if (eeprom_data & IGB_EEPROM_APME) 3414 adapter->flags |= IGB_FLAG_WOL_SUPPORTED; 3415 3416 /* now that we have the eeprom settings, apply the special cases where 3417 * the eeprom may be wrong or the board simply won't support wake on 3418 * lan on a particular port 3419 */ 3420 switch (pdev->device) { 3421 case E1000_DEV_ID_82575GB_QUAD_COPPER: 3422 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; 3423 break; 3424 case E1000_DEV_ID_82575EB_FIBER_SERDES: 3425 case E1000_DEV_ID_82576_FIBER: 3426 case E1000_DEV_ID_82576_SERDES: 3427 /* Wake events only supported on port A for dual fiber 3428 * regardless of eeprom setting 3429 */ 3430 if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) 3431 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; 3432 break; 3433 case E1000_DEV_ID_82576_QUAD_COPPER: 3434 case E1000_DEV_ID_82576_QUAD_COPPER_ET2: 3435 /* if quad port adapter, disable WoL on all but port A */ 3436 if (global_quad_port_a != 0) 3437 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; 3438 else 3439 adapter->flags |= IGB_FLAG_QUAD_PORT_A; 3440 /* Reset for multiple quad port adapters */ 3441 if (++global_quad_port_a == 4) 3442 global_quad_port_a = 0; 3443 break; 3444 default: 3445 /* If the device can't wake, don't set software support */ 3446 if (!device_can_wakeup(&adapter->pdev->dev)) 3447 adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; 3448 } 3449 3450 /* initialize the wol settings based on the eeprom settings */ 3451 if (adapter->flags & IGB_FLAG_WOL_SUPPORTED) 3452 adapter->wol |= E1000_WUFC_MAG; 3453 3454 /* Some vendors want WoL disabled by default, but still supported */ 3455 if ((hw->mac.type == e1000_i350) && 3456 (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) { 3457 adapter->flags |= IGB_FLAG_WOL_SUPPORTED; 3458 adapter->wol = 0; 3459 } 3460 3461 /* Some vendors want the ability to Use the EEPROM setting as 3462 * enable/disable only, and not for capability 3463 */ 3464 if (((hw->mac.type == e1000_i350) || 3465 (hw->mac.type == e1000_i354)) && 3466 (pdev->subsystem_vendor == PCI_VENDOR_ID_DELL)) { 3467 adapter->flags |= IGB_FLAG_WOL_SUPPORTED; 3468 adapter->wol = 0; 3469 } 3470 if (hw->mac.type == e1000_i350) { 3471 if (((pdev->subsystem_device == 0x5001) || 3472 (pdev->subsystem_device == 0x5002)) && 3473 (hw->bus.func == 0)) { 3474 adapter->flags |= IGB_FLAG_WOL_SUPPORTED; 3475 adapter->wol = 0; 3476 } 3477 if (pdev->subsystem_device == 0x1F52) 3478 adapter->flags |= IGB_FLAG_WOL_SUPPORTED; 3479 } 3480 3481 device_set_wakeup_enable(&adapter->pdev->dev, 3482 adapter->flags & IGB_FLAG_WOL_SUPPORTED); 3483 3484 /* reset the hardware with the new settings */ 3485 igb_reset(adapter); 3486 3487 /* Init the I2C interface */ 3488 err = igb_init_i2c(adapter); 3489 if (err) { 3490 dev_err(&pdev->dev, "failed to init i2c interface\n"); 3491 goto err_eeprom; 3492 } 3493 3494 /* let the f/w know that the h/w is now under the control of the 3495 * driver. 3496 */ 3497 igb_get_hw_control(adapter); 3498 3499 strcpy(netdev->name, "eth%d"); 3500 err = register_netdev(netdev); 3501 if (err) 3502 goto err_register; 3503 3504 /* carrier off reporting is important to ethtool even BEFORE open */ 3505 netif_carrier_off(netdev); 3506 3507 #ifdef CONFIG_IGB_DCA 3508 if (dca_add_requester(&pdev->dev) == 0) { 3509 adapter->flags |= IGB_FLAG_DCA_ENABLED; 3510 dev_info(&pdev->dev, "DCA enabled\n"); 3511 igb_setup_dca(adapter); 3512 } 3513 3514 #endif 3515 #ifdef CONFIG_IGB_HWMON 3516 /* Initialize the thermal sensor on i350 devices. */ 3517 if (hw->mac.type == e1000_i350 && hw->bus.func == 0) { 3518 u16 ets_word; 3519 3520 /* Read the NVM to determine if this i350 device supports an 3521 * external thermal sensor. 3522 */ 3523 hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_word); 3524 if (ets_word != 0x0000 && ets_word != 0xFFFF) 3525 adapter->ets = true; 3526 else 3527 adapter->ets = false; 3528 if (igb_sysfs_init(adapter)) 3529 dev_err(&pdev->dev, 3530 "failed to allocate sysfs resources\n"); 3531 } else { 3532 adapter->ets = false; 3533 } 3534 #endif 3535 /* Check if Media Autosense is enabled */ 3536 adapter->ei = *ei; 3537 if (hw->dev_spec._82575.mas_capable) 3538 igb_init_mas(adapter); 3539 3540 /* do hw tstamp init after resetting */ 3541 igb_ptp_init(adapter); 3542 3543 dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); 3544 /* print bus type/speed/width info, not applicable to i354 */ 3545 if (hw->mac.type != e1000_i354) { 3546 dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", 3547 netdev->name, 3548 ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" : 3549 (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" : 3550 "unknown"), 3551 ((hw->bus.width == e1000_bus_width_pcie_x4) ? 3552 "Width x4" : 3553 (hw->bus.width == e1000_bus_width_pcie_x2) ? 3554 "Width x2" : 3555 (hw->bus.width == e1000_bus_width_pcie_x1) ? 3556 "Width x1" : "unknown"), netdev->dev_addr); 3557 } 3558 3559 if ((hw->mac.type == e1000_82576 && 3560 rd32(E1000_EECD) & E1000_EECD_PRES) || 3561 (hw->mac.type >= e1000_i210 || 3562 igb_get_flash_presence_i210(hw))) { 3563 ret_val = igb_read_part_string(hw, part_str, 3564 E1000_PBANUM_LENGTH); 3565 } else { 3566 ret_val = -E1000_ERR_INVM_VALUE_NOT_FOUND; 3567 } 3568 3569 if (ret_val) 3570 strcpy(part_str, "Unknown"); 3571 dev_info(&pdev->dev, "%s: PBA No: %s\n", netdev->name, part_str); 3572 dev_info(&pdev->dev, 3573 "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", 3574 (adapter->flags & IGB_FLAG_HAS_MSIX) ? "MSI-X" : 3575 (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", 3576 adapter->num_rx_queues, adapter->num_tx_queues); 3577 if (hw->phy.media_type == e1000_media_type_copper) { 3578 switch (hw->mac.type) { 3579 case e1000_i350: 3580 case e1000_i210: 3581 case e1000_i211: 3582 /* Enable EEE for internal copper PHY devices */ 3583 err = igb_set_eee_i350(hw, true, true); 3584 if ((!err) && 3585 (!hw->dev_spec._82575.eee_disable)) { 3586 adapter->eee_advert = 3587 MDIO_EEE_100TX | MDIO_EEE_1000T; 3588 adapter->flags |= IGB_FLAG_EEE; 3589 } 3590 break; 3591 case e1000_i354: 3592 if ((rd32(E1000_CTRL_EXT) & 3593 E1000_CTRL_EXT_LINK_MODE_SGMII)) { 3594 err = igb_set_eee_i354(hw, true, true); 3595 if ((!err) && 3596 (!hw->dev_spec._82575.eee_disable)) { 3597 adapter->eee_advert = 3598 MDIO_EEE_100TX | MDIO_EEE_1000T; 3599 adapter->flags |= IGB_FLAG_EEE; 3600 } 3601 } 3602 break; 3603 default: 3604 break; 3605 } 3606 } 3607 3608 dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NO_DIRECT_COMPLETE); 3609 3610 pm_runtime_put_noidle(&pdev->dev); 3611 return 0; 3612 3613 err_register: 3614 igb_release_hw_control(adapter); 3615 memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap)); 3616 err_eeprom: 3617 if (!igb_check_reset_block(hw)) 3618 igb_reset_phy(hw); 3619 3620 if (hw->flash_address) 3621 iounmap(hw->flash_address); 3622 err_sw_init: 3623 kfree(adapter->mac_table); 3624 kfree(adapter->shadow_vfta); 3625 igb_clear_interrupt_scheme(adapter); 3626 #ifdef CONFIG_PCI_IOV 3627 igb_disable_sriov(pdev); 3628 #endif 3629 pci_iounmap(pdev, adapter->io_addr); 3630 err_ioremap: 3631 free_netdev(netdev); 3632 err_alloc_etherdev: 3633 pci_disable_pcie_error_reporting(pdev); 3634 pci_release_mem_regions(pdev); 3635 err_pci_reg: 3636 err_dma: 3637 pci_disable_device(pdev); 3638 return err; 3639 } 3640 3641 #ifdef CONFIG_PCI_IOV 3642 static int igb_disable_sriov(struct pci_dev *pdev) 3643 { 3644 struct net_device *netdev = pci_get_drvdata(pdev); 3645 struct igb_adapter *adapter = netdev_priv(netdev); 3646 struct e1000_hw *hw = &adapter->hw; 3647 3648 /* reclaim resources allocated to VFs */ 3649 if (adapter->vf_data) { 3650 /* disable iov and allow time for transactions to clear */ 3651 if (pci_vfs_assigned(pdev)) { 3652 dev_warn(&pdev->dev, 3653 "Cannot deallocate SR-IOV virtual functions while they are assigned - VFs will not be deallocated\n"); 3654 return -EPERM; 3655 } else { 3656 pci_disable_sriov(pdev); 3657 msleep(500); 3658 } 3659 3660 kfree(adapter->vf_mac_list); 3661 adapter->vf_mac_list = NULL; 3662 kfree(adapter->vf_data); 3663 adapter->vf_data = NULL; 3664 adapter->vfs_allocated_count = 0; 3665 wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); 3666 wrfl(); 3667 msleep(100); 3668 dev_info(&pdev->dev, "IOV Disabled\n"); 3669 3670 /* Re-enable DMA Coalescing flag since IOV is turned off */ 3671 adapter->flags |= IGB_FLAG_DMAC; 3672 } 3673 3674 return 0; 3675 } 3676 3677 static int igb_enable_sriov(struct pci_dev *pdev, int num_vfs) 3678 { 3679 struct net_device *netdev = pci_get_drvdata(pdev); 3680 struct igb_adapter *adapter = netdev_priv(netdev); 3681 int old_vfs = pci_num_vf(pdev); 3682 struct vf_mac_filter *mac_list; 3683 int err = 0; 3684 int num_vf_mac_filters, i; 3685 3686 if (!(adapter->flags & IGB_FLAG_HAS_MSIX) || num_vfs > 7) { 3687 err = -EPERM; 3688 goto out; 3689 } 3690 if (!num_vfs) 3691 goto out; 3692 3693 if (old_vfs) { 3694 dev_info(&pdev->dev, "%d pre-allocated VFs found - override max_vfs setting of %d\n", 3695 old_vfs, max_vfs); 3696 adapter->vfs_allocated_count = old_vfs; 3697 } else 3698 adapter->vfs_allocated_count = num_vfs; 3699 3700 adapter->vf_data = kcalloc(adapter->vfs_allocated_count, 3701 sizeof(struct vf_data_storage), GFP_KERNEL); 3702 3703 /* if allocation failed then we do not support SR-IOV */ 3704 if (!adapter->vf_data) { 3705 adapter->vfs_allocated_count = 0; 3706 err = -ENOMEM; 3707 goto out; 3708 } 3709 3710 /* Due to the limited number of RAR entries calculate potential 3711 * number of MAC filters available for the VFs. Reserve entries 3712 * for PF default MAC, PF MAC filters and at least one RAR entry 3713 * for each VF for VF MAC. 3714 */ 3715 num_vf_mac_filters = adapter->hw.mac.rar_entry_count - 3716 (1 + IGB_PF_MAC_FILTERS_RESERVED + 3717 adapter->vfs_allocated_count); 3718 3719 adapter->vf_mac_list = kcalloc(num_vf_mac_filters, 3720 sizeof(struct vf_mac_filter), 3721 GFP_KERNEL); 3722 3723 mac_list = adapter->vf_mac_list; 3724 INIT_LIST_HEAD(&adapter->vf_macs.l); 3725 3726 if (adapter->vf_mac_list) { 3727 /* Initialize list of VF MAC filters */ 3728 for (i = 0; i < num_vf_mac_filters; i++) { 3729 mac_list->vf = -1; 3730 mac_list->free = true; 3731 list_add(&mac_list->l, &adapter->vf_macs.l); 3732 mac_list++; 3733 } 3734 } else { 3735 /* If we could not allocate memory for the VF MAC filters 3736 * we can continue without this feature but warn user. 3737 */ 3738 dev_err(&pdev->dev, 3739 "Unable to allocate memory for VF MAC filter list\n"); 3740 } 3741 3742 /* only call pci_enable_sriov() if no VFs are allocated already */ 3743 if (!old_vfs) { 3744 err = pci_enable_sriov(pdev, adapter->vfs_allocated_count); 3745 if (err) 3746 goto err_out; 3747 } 3748 dev_info(&pdev->dev, "%d VFs allocated\n", 3749 adapter->vfs_allocated_count); 3750 for (i = 0; i < adapter->vfs_allocated_count; i++) 3751 igb_vf_configure(adapter, i); 3752 3753 /* DMA Coalescing is not supported in IOV mode. */ 3754 adapter->flags &= ~IGB_FLAG_DMAC; 3755 goto out; 3756 3757 err_out: 3758 kfree(adapter->vf_mac_list); 3759 adapter->vf_mac_list = NULL; 3760 kfree(adapter->vf_data); 3761 adapter->vf_data = NULL; 3762 adapter->vfs_allocated_count = 0; 3763 out: 3764 return err; 3765 } 3766 3767 #endif 3768 /** 3769 * igb_remove_i2c - Cleanup I2C interface 3770 * @adapter: pointer to adapter structure 3771 **/ 3772 static void igb_remove_i2c(struct igb_adapter *adapter) 3773 { 3774 /* free the adapter bus structure */ 3775 i2c_del_adapter(&adapter->i2c_adap); 3776 } 3777 3778 /** 3779 * igb_remove - Device Removal Routine 3780 * @pdev: PCI device information struct 3781 * 3782 * igb_remove is called by the PCI subsystem to alert the driver 3783 * that it should release a PCI device. The could be caused by a 3784 * Hot-Plug event, or because the driver is going to be removed from 3785 * memory. 3786 **/ 3787 static void igb_remove(struct pci_dev *pdev) 3788 { 3789 struct net_device *netdev = pci_get_drvdata(pdev); 3790 struct igb_adapter *adapter = netdev_priv(netdev); 3791 struct e1000_hw *hw = &adapter->hw; 3792 3793 pm_runtime_get_noresume(&pdev->dev); 3794 #ifdef CONFIG_IGB_HWMON 3795 igb_sysfs_exit(adapter); 3796 #endif 3797 igb_remove_i2c(adapter); 3798 igb_ptp_stop(adapter); 3799 /* The watchdog timer may be rescheduled, so explicitly 3800 * disable watchdog from being rescheduled. 3801 */ 3802 set_bit(__IGB_DOWN, &adapter->state); 3803 del_timer_sync(&adapter->watchdog_timer); 3804 del_timer_sync(&adapter->phy_info_timer); 3805 3806 cancel_work_sync(&adapter->reset_task); 3807 cancel_work_sync(&adapter->watchdog_task); 3808 3809 #ifdef CONFIG_IGB_DCA 3810 if (adapter->flags & IGB_FLAG_DCA_ENABLED) { 3811 dev_info(&pdev->dev, "DCA disabled\n"); 3812 dca_remove_requester(&pdev->dev); 3813 adapter->flags &= ~IGB_FLAG_DCA_ENABLED; 3814 wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); 3815 } 3816 #endif 3817 3818 /* Release control of h/w to f/w. If f/w is AMT enabled, this 3819 * would have already happened in close and is redundant. 3820 */ 3821 igb_release_hw_control(adapter); 3822 3823 #ifdef CONFIG_PCI_IOV 3824 igb_disable_sriov(pdev); 3825 #endif 3826 3827 unregister_netdev(netdev); 3828 3829 igb_clear_interrupt_scheme(adapter); 3830 3831 pci_iounmap(pdev, adapter->io_addr); 3832 if (hw->flash_address) 3833 iounmap(hw->flash_address); 3834 pci_release_mem_regions(pdev); 3835 3836 kfree(adapter->mac_table); 3837 kfree(adapter->shadow_vfta); 3838 free_netdev(netdev); 3839 3840 pci_disable_pcie_error_reporting(pdev); 3841 3842 pci_disable_device(pdev); 3843 } 3844 3845 /** 3846 * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space 3847 * @adapter: board private structure to initialize 3848 * 3849 * This function initializes the vf specific data storage and then attempts to 3850 * allocate the VFs. The reason for ordering it this way is because it is much 3851 * mor expensive time wise to disable SR-IOV than it is to allocate and free 3852 * the memory for the VFs. 3853 **/ 3854 static void igb_probe_vfs(struct igb_adapter *adapter) 3855 { 3856 #ifdef CONFIG_PCI_IOV 3857 struct pci_dev *pdev = adapter->pdev; 3858 struct e1000_hw *hw = &adapter->hw; 3859 3860 /* Virtualization features not supported on i210 family. */ 3861 if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) 3862 return; 3863 3864 /* Of the below we really only want the effect of getting 3865 * IGB_FLAG_HAS_MSIX set (if available), without which 3866 * igb_enable_sriov() has no effect. 3867 */ 3868 igb_set_interrupt_capability(adapter, true); 3869 igb_reset_interrupt_capability(adapter); 3870 3871 pci_sriov_set_totalvfs(pdev, 7); 3872 igb_enable_sriov(pdev, max_vfs); 3873 3874 #endif /* CONFIG_PCI_IOV */ 3875 } 3876 3877 unsigned int igb_get_max_rss_queues(struct igb_adapter *adapter) 3878 { 3879 struct e1000_hw *hw = &adapter->hw; 3880 unsigned int max_rss_queues; 3881 3882 /* Determine the maximum number of RSS queues supported. */ 3883 switch (hw->mac.type) { 3884 case e1000_i211: 3885 max_rss_queues = IGB_MAX_RX_QUEUES_I211; 3886 break; 3887 case e1000_82575: 3888 case e1000_i210: 3889 max_rss_queues = IGB_MAX_RX_QUEUES_82575; 3890 break; 3891 case e1000_i350: 3892 /* I350 cannot do RSS and SR-IOV at the same time */ 3893 if (!!adapter->vfs_allocated_count) { 3894 max_rss_queues = 1; 3895 break; 3896 } 3897 fallthrough; 3898 case e1000_82576: 3899 if (!!adapter->vfs_allocated_count) { 3900 max_rss_queues = 2; 3901 break; 3902 } 3903 fallthrough; 3904 case e1000_82580: 3905 case e1000_i354: 3906 default: 3907 max_rss_queues = IGB_MAX_RX_QUEUES; 3908 break; 3909 } 3910 3911 return max_rss_queues; 3912 } 3913 3914 static void igb_init_queue_configuration(struct igb_adapter *adapter) 3915 { 3916 u32 max_rss_queues; 3917 3918 max_rss_queues = igb_get_max_rss_queues(adapter); 3919 adapter->rss_queues = min_t(u32, max_rss_queues, num_online_cpus()); 3920 3921 igb_set_flag_queue_pairs(adapter, max_rss_queues); 3922 } 3923 3924 void igb_set_flag_queue_pairs(struct igb_adapter *adapter, 3925 const u32 max_rss_queues) 3926 { 3927 struct e1000_hw *hw = &adapter->hw; 3928 3929 /* Determine if we need to pair queues. */ 3930 switch (hw->mac.type) { 3931 case e1000_82575: 3932 case e1000_i211: 3933 /* Device supports enough interrupts without queue pairing. */ 3934 break; 3935 case e1000_82576: 3936 case e1000_82580: 3937 case e1000_i350: 3938 case e1000_i354: 3939 case e1000_i210: 3940 default: 3941 /* If rss_queues > half of max_rss_queues, pair the queues in 3942 * order to conserve interrupts due to limited supply. 3943 */ 3944 if (adapter->rss_queues > (max_rss_queues / 2)) 3945 adapter->flags |= IGB_FLAG_QUEUE_PAIRS; 3946 else 3947 adapter->flags &= ~IGB_FLAG_QUEUE_PAIRS; 3948 break; 3949 } 3950 } 3951 3952 /** 3953 * igb_sw_init - Initialize general software structures (struct igb_adapter) 3954 * @adapter: board private structure to initialize 3955 * 3956 * igb_sw_init initializes the Adapter private data structure. 3957 * Fields are initialized based on PCI device information and 3958 * OS network device settings (MTU size). 3959 **/ 3960 static int igb_sw_init(struct igb_adapter *adapter) 3961 { 3962 struct e1000_hw *hw = &adapter->hw; 3963 struct net_device *netdev = adapter->netdev; 3964 struct pci_dev *pdev = adapter->pdev; 3965 3966 pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); 3967 3968 /* set default ring sizes */ 3969 adapter->tx_ring_count = IGB_DEFAULT_TXD; 3970 adapter->rx_ring_count = IGB_DEFAULT_RXD; 3971 3972 /* set default ITR values */ 3973 adapter->rx_itr_setting = IGB_DEFAULT_ITR; 3974 adapter->tx_itr_setting = IGB_DEFAULT_ITR; 3975 3976 /* set default work limits */ 3977 adapter->tx_work_limit = IGB_DEFAULT_TX_WORK; 3978 3979 adapter->max_frame_size = netdev->mtu + IGB_ETH_PKT_HDR_PAD; 3980 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; 3981 3982 spin_lock_init(&adapter->nfc_lock); 3983 spin_lock_init(&adapter->stats64_lock); 3984 #ifdef CONFIG_PCI_IOV 3985 switch (hw->mac.type) { 3986 case e1000_82576: 3987 case e1000_i350: 3988 if (max_vfs > 7) { 3989 dev_warn(&pdev->dev, 3990 "Maximum of 7 VFs per PF, using max\n"); 3991 max_vfs = adapter->vfs_allocated_count = 7; 3992 } else 3993 adapter->vfs_allocated_count = max_vfs; 3994 if (adapter->vfs_allocated_count) 3995 dev_warn(&pdev->dev, 3996 "Enabling SR-IOV VFs using the module parameter is deprecated - please use the pci sysfs interface.\n"); 3997 break; 3998 default: 3999 break; 4000 } 4001 #endif /* CONFIG_PCI_IOV */ 4002 4003 /* Assume MSI-X interrupts, will be checked during IRQ allocation */ 4004 adapter->flags |= IGB_FLAG_HAS_MSIX; 4005 4006 adapter->mac_table = kcalloc(hw->mac.rar_entry_count, 4007 sizeof(struct igb_mac_addr), 4008 GFP_KERNEL); 4009 if (!adapter->mac_table) 4010 return -ENOMEM; 4011 4012 igb_probe_vfs(adapter); 4013 4014 igb_init_queue_configuration(adapter); 4015 4016 /* Setup and initialize a copy of the hw vlan table array */ 4017 adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32), 4018 GFP_KERNEL); 4019 if (!adapter->shadow_vfta) 4020 return -ENOMEM; 4021 4022 /* This call may decrease the number of queues */ 4023 if (igb_init_interrupt_scheme(adapter, true)) { 4024 dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); 4025 return -ENOMEM; 4026 } 4027 4028 /* Explicitly disable IRQ since the NIC can be in any state. */ 4029 igb_irq_disable(adapter); 4030 4031 if (hw->mac.type >= e1000_i350) 4032 adapter->flags &= ~IGB_FLAG_DMAC; 4033 4034 set_bit(__IGB_DOWN, &adapter->state); 4035 return 0; 4036 } 4037 4038 /** 4039 * __igb_open - Called when a network interface is made active 4040 * @netdev: network interface device structure 4041 * @resuming: indicates whether we are in a resume call 4042 * 4043 * Returns 0 on success, negative value on failure 4044 * 4045 * The open entry point is called when a network interface is made 4046 * active by the system (IFF_UP). At this point all resources needed 4047 * for transmit and receive operations are allocated, the interrupt 4048 * handler is registered with the OS, the watchdog timer is started, 4049 * and the stack is notified that the interface is ready. 4050 **/ 4051 static int __igb_open(struct net_device *netdev, bool resuming) 4052 { 4053 struct igb_adapter *adapter = netdev_priv(netdev); 4054 struct e1000_hw *hw = &adapter->hw; 4055 struct pci_dev *pdev = adapter->pdev; 4056 int err; 4057 int i; 4058 4059 /* disallow open during test */ 4060 if (test_bit(__IGB_TESTING, &adapter->state)) { 4061 WARN_ON(resuming); 4062 return -EBUSY; 4063 } 4064 4065 if (!resuming) 4066 pm_runtime_get_sync(&pdev->dev); 4067 4068 netif_carrier_off(netdev); 4069 4070 /* allocate transmit descriptors */ 4071 err = igb_setup_all_tx_resources(adapter); 4072 if (err) 4073 goto err_setup_tx; 4074 4075 /* allocate receive descriptors */ 4076 err = igb_setup_all_rx_resources(adapter); 4077 if (err) 4078 goto err_setup_rx; 4079 4080 igb_power_up_link(adapter); 4081 4082 /* before we allocate an interrupt, we must be ready to handle it. 4083 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt 4084 * as soon as we call pci_request_irq, so we have to setup our 4085 * clean_rx handler before we do so. 4086 */ 4087 igb_configure(adapter); 4088 4089 err = igb_request_irq(adapter); 4090 if (err) 4091 goto err_req_irq; 4092 4093 /* Notify the stack of the actual queue counts. */ 4094 err = netif_set_real_num_tx_queues(adapter->netdev, 4095 adapter->num_tx_queues); 4096 if (err) 4097 goto err_set_queues; 4098 4099 err = netif_set_real_num_rx_queues(adapter->netdev, 4100 adapter->num_rx_queues); 4101 if (err) 4102 goto err_set_queues; 4103 4104 /* From here on the code is the same as igb_up() */ 4105 clear_bit(__IGB_DOWN, &adapter->state); 4106 4107 for (i = 0; i < adapter->num_q_vectors; i++) 4108 napi_enable(&(adapter->q_vector[i]->napi)); 4109 4110 /* Clear any pending interrupts. */ 4111 rd32(E1000_TSICR); 4112 rd32(E1000_ICR); 4113 4114 igb_irq_enable(adapter); 4115 4116 /* notify VFs that reset has been completed */ 4117 if (adapter->vfs_allocated_count) { 4118 u32 reg_data = rd32(E1000_CTRL_EXT); 4119 4120 reg_data |= E1000_CTRL_EXT_PFRSTD; 4121 wr32(E1000_CTRL_EXT, reg_data); 4122 } 4123 4124 netif_tx_start_all_queues(netdev); 4125 4126 if (!resuming) 4127 pm_runtime_put(&pdev->dev); 4128 4129 /* start the watchdog. */ 4130 hw->mac.get_link_status = 1; 4131 schedule_work(&adapter->watchdog_task); 4132 4133 return 0; 4134 4135 err_set_queues: 4136 igb_free_irq(adapter); 4137 err_req_irq: 4138 igb_release_hw_control(adapter); 4139 igb_power_down_link(adapter); 4140 igb_free_all_rx_resources(adapter); 4141 err_setup_rx: 4142 igb_free_all_tx_resources(adapter); 4143 err_setup_tx: 4144 igb_reset(adapter); 4145 if (!resuming) 4146 pm_runtime_put(&pdev->dev); 4147 4148 return err; 4149 } 4150 4151 int igb_open(struct net_device *netdev) 4152 { 4153 return __igb_open(netdev, false); 4154 } 4155 4156 /** 4157 * __igb_close - Disables a network interface 4158 * @netdev: network interface device structure 4159 * @suspending: indicates we are in a suspend call 4160 * 4161 * Returns 0, this is not allowed to fail 4162 * 4163 * The close entry point is called when an interface is de-activated 4164 * by the OS. The hardware is still under the driver's control, but 4165 * needs to be disabled. A global MAC reset is issued to stop the 4166 * hardware, and all transmit and receive resources are freed. 4167 **/ 4168 static int __igb_close(struct net_device *netdev, bool suspending) 4169 { 4170 struct igb_adapter *adapter = netdev_priv(netdev); 4171 struct pci_dev *pdev = adapter->pdev; 4172 4173 WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); 4174 4175 if (!suspending) 4176 pm_runtime_get_sync(&pdev->dev); 4177 4178 igb_down(adapter); 4179 igb_free_irq(adapter); 4180 4181 igb_free_all_tx_resources(adapter); 4182 igb_free_all_rx_resources(adapter); 4183 4184 if (!suspending) 4185 pm_runtime_put_sync(&pdev->dev); 4186 return 0; 4187 } 4188 4189 int igb_close(struct net_device *netdev) 4190 { 4191 if (netif_device_present(netdev) || netdev->dismantle) 4192 return __igb_close(netdev, false); 4193 return 0; 4194 } 4195 4196 /** 4197 * igb_setup_tx_resources - allocate Tx resources (Descriptors) 4198 * @tx_ring: tx descriptor ring (for a specific queue) to setup 4199 * 4200 * Return 0 on success, negative on failure 4201 **/ 4202 int igb_setup_tx_resources(struct igb_ring *tx_ring) 4203 { 4204 struct device *dev = tx_ring->dev; 4205 int size; 4206 4207 size = sizeof(struct igb_tx_buffer) * tx_ring->count; 4208 4209 tx_ring->tx_buffer_info = vmalloc(size); 4210 if (!tx_ring->tx_buffer_info) 4211 goto err; 4212 4213 /* round up to nearest 4K */ 4214 tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); 4215 tx_ring->size = ALIGN(tx_ring->size, 4096); 4216 4217 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, 4218 &tx_ring->dma, GFP_KERNEL); 4219 if (!tx_ring->desc) 4220 goto err; 4221 4222 tx_ring->next_to_use = 0; 4223 tx_ring->next_to_clean = 0; 4224 4225 return 0; 4226 4227 err: 4228 vfree(tx_ring->tx_buffer_info); 4229 tx_ring->tx_buffer_info = NULL; 4230 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); 4231 return -ENOMEM; 4232 } 4233 4234 /** 4235 * igb_setup_all_tx_resources - wrapper to allocate Tx resources 4236 * (Descriptors) for all queues 4237 * @adapter: board private structure 4238 * 4239 * Return 0 on success, negative on failure 4240 **/ 4241 static int igb_setup_all_tx_resources(struct igb_adapter *adapter) 4242 { 4243 struct pci_dev *pdev = adapter->pdev; 4244 int i, err = 0; 4245 4246 for (i = 0; i < adapter->num_tx_queues; i++) { 4247 err = igb_setup_tx_resources(adapter->tx_ring[i]); 4248 if (err) { 4249 dev_err(&pdev->dev, 4250 "Allocation for Tx Queue %u failed\n", i); 4251 for (i--; i >= 0; i--) 4252 igb_free_tx_resources(adapter->tx_ring[i]); 4253 break; 4254 } 4255 } 4256 4257 return err; 4258 } 4259 4260 /** 4261 * igb_setup_tctl - configure the transmit control registers 4262 * @adapter: Board private structure 4263 **/ 4264 void igb_setup_tctl(struct igb_adapter *adapter) 4265 { 4266 struct e1000_hw *hw = &adapter->hw; 4267 u32 tctl; 4268 4269 /* disable queue 0 which is enabled by default on 82575 and 82576 */ 4270 wr32(E1000_TXDCTL(0), 0); 4271 4272 /* Program the Transmit Control Register */ 4273 tctl = rd32(E1000_TCTL); 4274 tctl &= ~E1000_TCTL_CT; 4275 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | 4276 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); 4277 4278 igb_config_collision_dist(hw); 4279 4280 /* Enable transmits */ 4281 tctl |= E1000_TCTL_EN; 4282 4283 wr32(E1000_TCTL, tctl); 4284 } 4285 4286 /** 4287 * igb_configure_tx_ring - Configure transmit ring after Reset 4288 * @adapter: board private structure 4289 * @ring: tx ring to configure 4290 * 4291 * Configure a transmit ring after a reset. 4292 **/ 4293 void igb_configure_tx_ring(struct igb_adapter *adapter, 4294 struct igb_ring *ring) 4295 { 4296 struct e1000_hw *hw = &adapter->hw; 4297 u32 txdctl = 0; 4298 u64 tdba = ring->dma; 4299 int reg_idx = ring->reg_idx; 4300 4301 wr32(E1000_TDLEN(reg_idx), 4302 ring->count * sizeof(union e1000_adv_tx_desc)); 4303 wr32(E1000_TDBAL(reg_idx), 4304 tdba & 0x00000000ffffffffULL); 4305 wr32(E1000_TDBAH(reg_idx), tdba >> 32); 4306 4307 ring->tail = adapter->io_addr + E1000_TDT(reg_idx); 4308 wr32(E1000_TDH(reg_idx), 0); 4309 writel(0, ring->tail); 4310 4311 txdctl |= IGB_TX_PTHRESH; 4312 txdctl |= IGB_TX_HTHRESH << 8; 4313 txdctl |= IGB_TX_WTHRESH << 16; 4314 4315 /* reinitialize tx_buffer_info */ 4316 memset(ring->tx_buffer_info, 0, 4317 sizeof(struct igb_tx_buffer) * ring->count); 4318 4319 txdctl |= E1000_TXDCTL_QUEUE_ENABLE; 4320 wr32(E1000_TXDCTL(reg_idx), txdctl); 4321 } 4322 4323 /** 4324 * igb_configure_tx - Configure transmit Unit after Reset 4325 * @adapter: board private structure 4326 * 4327 * Configure the Tx unit of the MAC after a reset. 4328 **/ 4329 static void igb_configure_tx(struct igb_adapter *adapter) 4330 { 4331 struct e1000_hw *hw = &adapter->hw; 4332 int i; 4333 4334 /* disable the queues */ 4335 for (i = 0; i < adapter->num_tx_queues; i++) 4336 wr32(E1000_TXDCTL(adapter->tx_ring[i]->reg_idx), 0); 4337 4338 wrfl(); 4339 usleep_range(10000, 20000); 4340 4341 for (i = 0; i < adapter->num_tx_queues; i++) 4342 igb_configure_tx_ring(adapter, adapter->tx_ring[i]); 4343 } 4344 4345 /** 4346 * igb_setup_rx_resources - allocate Rx resources (Descriptors) 4347 * @rx_ring: Rx descriptor ring (for a specific queue) to setup 4348 * 4349 * Returns 0 on success, negative on failure 4350 **/ 4351 int igb_setup_rx_resources(struct igb_ring *rx_ring) 4352 { 4353 struct igb_adapter *adapter = netdev_priv(rx_ring->netdev); 4354 struct device *dev = rx_ring->dev; 4355 int size; 4356 4357 size = sizeof(struct igb_rx_buffer) * rx_ring->count; 4358 4359 rx_ring->rx_buffer_info = vmalloc(size); 4360 if (!rx_ring->rx_buffer_info) 4361 goto err; 4362 4363 /* Round up to nearest 4K */ 4364 rx_ring->size = rx_ring->count * sizeof(union e1000_adv_rx_desc); 4365 rx_ring->size = ALIGN(rx_ring->size, 4096); 4366 4367 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, 4368 &rx_ring->dma, GFP_KERNEL); 4369 if (!rx_ring->desc) 4370 goto err; 4371 4372 rx_ring->next_to_alloc = 0; 4373 rx_ring->next_to_clean = 0; 4374 rx_ring->next_to_use = 0; 4375 4376 rx_ring->xdp_prog = adapter->xdp_prog; 4377 4378 /* XDP RX-queue info */ 4379 if (xdp_rxq_info_reg(&rx_ring->xdp_rxq, rx_ring->netdev, 4380 rx_ring->queue_index, 0) < 0) 4381 goto err; 4382 4383 return 0; 4384 4385 err: 4386 vfree(rx_ring->rx_buffer_info); 4387 rx_ring->rx_buffer_info = NULL; 4388 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); 4389 return -ENOMEM; 4390 } 4391 4392 /** 4393 * igb_setup_all_rx_resources - wrapper to allocate Rx resources 4394 * (Descriptors) for all queues 4395 * @adapter: board private structure 4396 * 4397 * Return 0 on success, negative on failure 4398 **/ 4399 static int igb_setup_all_rx_resources(struct igb_adapter *adapter) 4400 { 4401 struct pci_dev *pdev = adapter->pdev; 4402 int i, err = 0; 4403 4404 for (i = 0; i < adapter->num_rx_queues; i++) { 4405 err = igb_setup_rx_resources(adapter->rx_ring[i]); 4406 if (err) { 4407 dev_err(&pdev->dev, 4408 "Allocation for Rx Queue %u failed\n", i); 4409 for (i--; i >= 0; i--) 4410 igb_free_rx_resources(adapter->rx_ring[i]); 4411 break; 4412 } 4413 } 4414 4415 return err; 4416 } 4417 4418 /** 4419 * igb_setup_mrqc - configure the multiple receive queue control registers 4420 * @adapter: Board private structure 4421 **/ 4422 static void igb_setup_mrqc(struct igb_adapter *adapter) 4423 { 4424 struct e1000_hw *hw = &adapter->hw; 4425 u32 mrqc, rxcsum; 4426 u32 j, num_rx_queues; 4427 u32 rss_key[10]; 4428 4429 netdev_rss_key_fill(rss_key, sizeof(rss_key)); 4430 for (j = 0; j < 10; j++) 4431 wr32(E1000_RSSRK(j), rss_key[j]); 4432 4433 num_rx_queues = adapter->rss_queues; 4434 4435 switch (hw->mac.type) { 4436 case e1000_82576: 4437 /* 82576 supports 2 RSS queues for SR-IOV */ 4438 if (adapter->vfs_allocated_count) 4439 num_rx_queues = 2; 4440 break; 4441 default: 4442 break; 4443 } 4444 4445 if (adapter->rss_indir_tbl_init != num_rx_queues) { 4446 for (j = 0; j < IGB_RETA_SIZE; j++) 4447 adapter->rss_indir_tbl[j] = 4448 (j * num_rx_queues) / IGB_RETA_SIZE; 4449 adapter->rss_indir_tbl_init = num_rx_queues; 4450 } 4451 igb_write_rss_indir_tbl(adapter); 4452 4453 /* Disable raw packet checksumming so that RSS hash is placed in 4454 * descriptor on writeback. No need to enable TCP/UDP/IP checksum 4455 * offloads as they are enabled by default 4456 */ 4457 rxcsum = rd32(E1000_RXCSUM); 4458 rxcsum |= E1000_RXCSUM_PCSD; 4459 4460 if (adapter->hw.mac.type >= e1000_82576) 4461 /* Enable Receive Checksum Offload for SCTP */ 4462 rxcsum |= E1000_RXCSUM_CRCOFL; 4463 4464 /* Don't need to set TUOFL or IPOFL, they default to 1 */ 4465 wr32(E1000_RXCSUM, rxcsum); 4466 4467 /* Generate RSS hash based on packet types, TCP/UDP 4468 * port numbers and/or IPv4/v6 src and dst addresses 4469 */ 4470 mrqc = E1000_MRQC_RSS_FIELD_IPV4 | 4471 E1000_MRQC_RSS_FIELD_IPV4_TCP | 4472 E1000_MRQC_RSS_FIELD_IPV6 | 4473 E1000_MRQC_RSS_FIELD_IPV6_TCP | 4474 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX; 4475 4476 if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP) 4477 mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP; 4478 if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP) 4479 mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP; 4480 4481 /* If VMDq is enabled then we set the appropriate mode for that, else 4482 * we default to RSS so that an RSS hash is calculated per packet even 4483 * if we are only using one queue 4484 */ 4485 if (adapter->vfs_allocated_count) { 4486 if (hw->mac.type > e1000_82575) { 4487 /* Set the default pool for the PF's first queue */ 4488 u32 vtctl = rd32(E1000_VT_CTL); 4489 4490 vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | 4491 E1000_VT_CTL_DISABLE_DEF_POOL); 4492 vtctl |= adapter->vfs_allocated_count << 4493 E1000_VT_CTL_DEFAULT_POOL_SHIFT; 4494 wr32(E1000_VT_CTL, vtctl); 4495 } 4496 if (adapter->rss_queues > 1) 4497 mrqc |= E1000_MRQC_ENABLE_VMDQ_RSS_MQ; 4498 else 4499 mrqc |= E1000_MRQC_ENABLE_VMDQ; 4500 } else { 4501 mrqc |= E1000_MRQC_ENABLE_RSS_MQ; 4502 } 4503 igb_vmm_control(adapter); 4504 4505 wr32(E1000_MRQC, mrqc); 4506 } 4507 4508 /** 4509 * igb_setup_rctl - configure the receive control registers 4510 * @adapter: Board private structure 4511 **/ 4512 void igb_setup_rctl(struct igb_adapter *adapter) 4513 { 4514 struct e1000_hw *hw = &adapter->hw; 4515 u32 rctl; 4516 4517 rctl = rd32(E1000_RCTL); 4518 4519 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); 4520 rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); 4521 4522 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | 4523 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); 4524 4525 /* enable stripping of CRC. It's unlikely this will break BMC 4526 * redirection as it did with e1000. Newer features require 4527 * that the HW strips the CRC. 4528 */ 4529 rctl |= E1000_RCTL_SECRC; 4530 4531 /* disable store bad packets and clear size bits. */ 4532 rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); 4533 4534 /* enable LPE to allow for reception of jumbo frames */ 4535 rctl |= E1000_RCTL_LPE; 4536 4537 /* disable queue 0 to prevent tail write w/o re-config */ 4538 wr32(E1000_RXDCTL(0), 0); 4539 4540 /* Attention!!! For SR-IOV PF driver operations you must enable 4541 * queue drop for all VF and PF queues to prevent head of line blocking 4542 * if an un-trusted VF does not provide descriptors to hardware. 4543 */ 4544 if (adapter->vfs_allocated_count) { 4545 /* set all queue drop enable bits */ 4546 wr32(E1000_QDE, ALL_QUEUES); 4547 } 4548 4549 /* This is useful for sniffing bad packets. */ 4550 if (adapter->netdev->features & NETIF_F_RXALL) { 4551 /* UPE and MPE will be handled by normal PROMISC logic 4552 * in e1000e_set_rx_mode 4553 */ 4554 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ 4555 E1000_RCTL_BAM | /* RX All Bcast Pkts */ 4556 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ 4557 4558 rctl &= ~(E1000_RCTL_DPF | /* Allow filtered pause */ 4559 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ 4560 /* Do not mess with E1000_CTRL_VME, it affects transmit as well, 4561 * and that breaks VLANs. 4562 */ 4563 } 4564 4565 wr32(E1000_RCTL, rctl); 4566 } 4567 4568 static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, 4569 int vfn) 4570 { 4571 struct e1000_hw *hw = &adapter->hw; 4572 u32 vmolr; 4573 4574 if (size > MAX_JUMBO_FRAME_SIZE) 4575 size = MAX_JUMBO_FRAME_SIZE; 4576 4577 vmolr = rd32(E1000_VMOLR(vfn)); 4578 vmolr &= ~E1000_VMOLR_RLPML_MASK; 4579 vmolr |= size | E1000_VMOLR_LPE; 4580 wr32(E1000_VMOLR(vfn), vmolr); 4581 4582 return 0; 4583 } 4584 4585 static inline void igb_set_vf_vlan_strip(struct igb_adapter *adapter, 4586 int vfn, bool enable) 4587 { 4588 struct e1000_hw *hw = &adapter->hw; 4589 u32 val, reg; 4590 4591 if (hw->mac.type < e1000_82576) 4592 return; 4593 4594 if (hw->mac.type == e1000_i350) 4595 reg = E1000_DVMOLR(vfn); 4596 else 4597 reg = E1000_VMOLR(vfn); 4598 4599 val = rd32(reg); 4600 if (enable) 4601 val |= E1000_VMOLR_STRVLAN; 4602 else 4603 val &= ~(E1000_VMOLR_STRVLAN); 4604 wr32(reg, val); 4605 } 4606 4607 static inline void igb_set_vmolr(struct igb_adapter *adapter, 4608 int vfn, bool aupe) 4609 { 4610 struct e1000_hw *hw = &adapter->hw; 4611 u32 vmolr; 4612 4613 /* This register exists only on 82576 and newer so if we are older then 4614 * we should exit and do nothing 4615 */ 4616 if (hw->mac.type < e1000_82576) 4617 return; 4618 4619 vmolr = rd32(E1000_VMOLR(vfn)); 4620 if (aupe) 4621 vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */ 4622 else 4623 vmolr &= ~(E1000_VMOLR_AUPE); /* Tagged packets ONLY */ 4624 4625 /* clear all bits that might not be set */ 4626 vmolr &= ~(E1000_VMOLR_BAM | E1000_VMOLR_RSSE); 4627 4628 if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count) 4629 vmolr |= E1000_VMOLR_RSSE; /* enable RSS */ 4630 /* for VMDq only allow the VFs and pool 0 to accept broadcast and 4631 * multicast packets 4632 */ 4633 if (vfn <= adapter->vfs_allocated_count) 4634 vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */ 4635 4636 wr32(E1000_VMOLR(vfn), vmolr); 4637 } 4638 4639 /** 4640 * igb_setup_srrctl - configure the split and replication receive control 4641 * registers 4642 * @adapter: Board private structure 4643 * @ring: receive ring to be configured 4644 **/ 4645 void igb_setup_srrctl(struct igb_adapter *adapter, struct igb_ring *ring) 4646 { 4647 struct e1000_hw *hw = &adapter->hw; 4648 int reg_idx = ring->reg_idx; 4649 u32 srrctl = 0; 4650 4651 srrctl = IGB_RX_HDR_LEN << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; 4652 if (ring_uses_large_buffer(ring)) 4653 srrctl |= IGB_RXBUFFER_3072 >> E1000_SRRCTL_BSIZEPKT_SHIFT; 4654 else 4655 srrctl |= IGB_RXBUFFER_2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT; 4656 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; 4657 if (hw->mac.type >= e1000_82580) 4658 srrctl |= E1000_SRRCTL_TIMESTAMP; 4659 /* Only set Drop Enable if VFs allocated, or we are supporting multiple 4660 * queues and rx flow control is disabled 4661 */ 4662 if (adapter->vfs_allocated_count || 4663 (!(hw->fc.current_mode & e1000_fc_rx_pause) && 4664 adapter->num_rx_queues > 1)) 4665 srrctl |= E1000_SRRCTL_DROP_EN; 4666 4667 wr32(E1000_SRRCTL(reg_idx), srrctl); 4668 } 4669 4670 /** 4671 * igb_configure_rx_ring - Configure a receive ring after Reset 4672 * @adapter: board private structure 4673 * @ring: receive ring to be configured 4674 * 4675 * Configure the Rx unit of the MAC after a reset. 4676 **/ 4677 void igb_configure_rx_ring(struct igb_adapter *adapter, 4678 struct igb_ring *ring) 4679 { 4680 struct e1000_hw *hw = &adapter->hw; 4681 union e1000_adv_rx_desc *rx_desc; 4682 u64 rdba = ring->dma; 4683 int reg_idx = ring->reg_idx; 4684 u32 rxdctl = 0; 4685 4686 xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq); 4687 WARN_ON(xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, 4688 MEM_TYPE_PAGE_SHARED, NULL)); 4689 4690 /* disable the queue */ 4691 wr32(E1000_RXDCTL(reg_idx), 0); 4692 4693 /* Set DMA base address registers */ 4694 wr32(E1000_RDBAL(reg_idx), 4695 rdba & 0x00000000ffffffffULL); 4696 wr32(E1000_RDBAH(reg_idx), rdba >> 32); 4697 wr32(E1000_RDLEN(reg_idx), 4698 ring->count * sizeof(union e1000_adv_rx_desc)); 4699 4700 /* initialize head and tail */ 4701 ring->tail = adapter->io_addr + E1000_RDT(reg_idx); 4702 wr32(E1000_RDH(reg_idx), 0); 4703 writel(0, ring->tail); 4704 4705 /* set descriptor configuration */ 4706 igb_setup_srrctl(adapter, ring); 4707 4708 /* set filtering for VMDQ pools */ 4709 igb_set_vmolr(adapter, reg_idx & 0x7, true); 4710 4711 rxdctl |= IGB_RX_PTHRESH; 4712 rxdctl |= IGB_RX_HTHRESH << 8; 4713 rxdctl |= IGB_RX_WTHRESH << 16; 4714 4715 /* initialize rx_buffer_info */ 4716 memset(ring->rx_buffer_info, 0, 4717 sizeof(struct igb_rx_buffer) * ring->count); 4718 4719 /* initialize Rx descriptor 0 */ 4720 rx_desc = IGB_RX_DESC(ring, 0); 4721 rx_desc->wb.upper.length = 0; 4722 4723 /* enable receive descriptor fetching */ 4724 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; 4725 wr32(E1000_RXDCTL(reg_idx), rxdctl); 4726 } 4727 4728 static void igb_set_rx_buffer_len(struct igb_adapter *adapter, 4729 struct igb_ring *rx_ring) 4730 { 4731 /* set build_skb and buffer size flags */ 4732 clear_ring_build_skb_enabled(rx_ring); 4733 clear_ring_uses_large_buffer(rx_ring); 4734 4735 if (adapter->flags & IGB_FLAG_RX_LEGACY) 4736 return; 4737 4738 set_ring_build_skb_enabled(rx_ring); 4739 4740 #if (PAGE_SIZE < 8192) 4741 if (adapter->max_frame_size <= IGB_MAX_FRAME_BUILD_SKB) 4742 return; 4743 4744 set_ring_uses_large_buffer(rx_ring); 4745 #endif 4746 } 4747 4748 /** 4749 * igb_configure_rx - Configure receive Unit after Reset 4750 * @adapter: board private structure 4751 * 4752 * Configure the Rx unit of the MAC after a reset. 4753 **/ 4754 static void igb_configure_rx(struct igb_adapter *adapter) 4755 { 4756 int i; 4757 4758 /* set the correct pool for the PF default MAC address in entry 0 */ 4759 igb_set_default_mac_filter(adapter); 4760 4761 /* Setup the HW Rx Head and Tail Descriptor Pointers and 4762 * the Base and Length of the Rx Descriptor Ring 4763 */ 4764 for (i = 0; i < adapter->num_rx_queues; i++) { 4765 struct igb_ring *rx_ring = adapter->rx_ring[i]; 4766 4767 igb_set_rx_buffer_len(adapter, rx_ring); 4768 igb_configure_rx_ring(adapter, rx_ring); 4769 } 4770 } 4771 4772 /** 4773 * igb_free_tx_resources - Free Tx Resources per Queue 4774 * @tx_ring: Tx descriptor ring for a specific queue 4775 * 4776 * Free all transmit software resources 4777 **/ 4778 void igb_free_tx_resources(struct igb_ring *tx_ring) 4779 { 4780 igb_clean_tx_ring(tx_ring); 4781 4782 vfree(tx_ring->tx_buffer_info); 4783 tx_ring->tx_buffer_info = NULL; 4784 4785 /* if not set, then don't free */ 4786 if (!tx_ring->desc) 4787 return; 4788 4789 dma_free_coherent(tx_ring->dev, tx_ring->size, 4790 tx_ring->desc, tx_ring->dma); 4791 4792 tx_ring->desc = NULL; 4793 } 4794 4795 /** 4796 * igb_free_all_tx_resources - Free Tx Resources for All Queues 4797 * @adapter: board private structure 4798 * 4799 * Free all transmit software resources 4800 **/ 4801 static void igb_free_all_tx_resources(struct igb_adapter *adapter) 4802 { 4803 int i; 4804 4805 for (i = 0; i < adapter->num_tx_queues; i++) 4806 if (adapter->tx_ring[i]) 4807 igb_free_tx_resources(adapter->tx_ring[i]); 4808 } 4809 4810 /** 4811 * igb_clean_tx_ring - Free Tx Buffers 4812 * @tx_ring: ring to be cleaned 4813 **/ 4814 static void igb_clean_tx_ring(struct igb_ring *tx_ring) 4815 { 4816 u16 i = tx_ring->next_to_clean; 4817 struct igb_tx_buffer *tx_buffer = &tx_ring->tx_buffer_info[i]; 4818 4819 while (i != tx_ring->next_to_use) { 4820 union e1000_adv_tx_desc *eop_desc, *tx_desc; 4821 4822 /* Free all the Tx ring sk_buffs */ 4823 dev_kfree_skb_any(tx_buffer->skb); 4824 4825 /* unmap skb header data */ 4826 dma_unmap_single(tx_ring->dev, 4827 dma_unmap_addr(tx_buffer, dma), 4828 dma_unmap_len(tx_buffer, len), 4829 DMA_TO_DEVICE); 4830 4831 /* check for eop_desc to determine the end of the packet */ 4832 eop_desc = tx_buffer->next_to_watch; 4833 tx_desc = IGB_TX_DESC(tx_ring, i); 4834 4835 /* unmap remaining buffers */ 4836 while (tx_desc != eop_desc) { 4837 tx_buffer++; 4838 tx_desc++; 4839 i++; 4840 if (unlikely(i == tx_ring->count)) { 4841 i = 0; 4842 tx_buffer = tx_ring->tx_buffer_info; 4843 tx_desc = IGB_TX_DESC(tx_ring, 0); 4844 } 4845 4846 /* unmap any remaining paged data */ 4847 if (dma_unmap_len(tx_buffer, len)) 4848 dma_unmap_page(tx_ring->dev, 4849 dma_unmap_addr(tx_buffer, dma), 4850 dma_unmap_len(tx_buffer, len), 4851 DMA_TO_DEVICE); 4852 } 4853 4854 tx_buffer->next_to_watch = NULL; 4855 4856 /* move us one more past the eop_desc for start of next pkt */ 4857 tx_buffer++; 4858 i++; 4859 if (unlikely(i == tx_ring->count)) { 4860 i = 0; 4861 tx_buffer = tx_ring->tx_buffer_info; 4862 } 4863 } 4864 4865 /* reset BQL for queue */ 4866 netdev_tx_reset_queue(txring_txq(tx_ring)); 4867 4868 /* reset next_to_use and next_to_clean */ 4869 tx_ring->next_to_use = 0; 4870 tx_ring->next_to_clean = 0; 4871 } 4872 4873 /** 4874 * igb_clean_all_tx_rings - Free Tx Buffers for all queues 4875 * @adapter: board private structure 4876 **/ 4877 static void igb_clean_all_tx_rings(struct igb_adapter *adapter) 4878 { 4879 int i; 4880 4881 for (i = 0; i < adapter->num_tx_queues; i++) 4882 if (adapter->tx_ring[i]) 4883 igb_clean_tx_ring(adapter->tx_ring[i]); 4884 } 4885 4886 /** 4887 * igb_free_rx_resources - Free Rx Resources 4888 * @rx_ring: ring to clean the resources from 4889 * 4890 * Free all receive software resources 4891 **/ 4892 void igb_free_rx_resources(struct igb_ring *rx_ring) 4893 { 4894 igb_clean_rx_ring(rx_ring); 4895 4896 rx_ring->xdp_prog = NULL; 4897 xdp_rxq_info_unreg(&rx_ring->xdp_rxq); 4898 vfree(rx_ring->rx_buffer_info); 4899 rx_ring->rx_buffer_info = NULL; 4900 4901 /* if not set, then don't free */ 4902 if (!rx_ring->desc) 4903 return; 4904 4905 dma_free_coherent(rx_ring->dev, rx_ring->size, 4906 rx_ring->desc, rx_ring->dma); 4907 4908 rx_ring->desc = NULL; 4909 } 4910 4911 /** 4912 * igb_free_all_rx_resources - Free Rx Resources for All Queues 4913 * @adapter: board private structure 4914 * 4915 * Free all receive software resources 4916 **/ 4917 static void igb_free_all_rx_resources(struct igb_adapter *adapter) 4918 { 4919 int i; 4920 4921 for (i = 0; i < adapter->num_rx_queues; i++) 4922 if (adapter->rx_ring[i]) 4923 igb_free_rx_resources(adapter->rx_ring[i]); 4924 } 4925 4926 /** 4927 * igb_clean_rx_ring - Free Rx Buffers per Queue 4928 * @rx_ring: ring to free buffers from 4929 **/ 4930 static void igb_clean_rx_ring(struct igb_ring *rx_ring) 4931 { 4932 u16 i = rx_ring->next_to_clean; 4933 4934 dev_kfree_skb(rx_ring->skb); 4935 rx_ring->skb = NULL; 4936 4937 /* Free all the Rx ring sk_buffs */ 4938 while (i != rx_ring->next_to_alloc) { 4939 struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i]; 4940 4941 /* Invalidate cache lines that may have been written to by 4942 * device so that we avoid corrupting memory. 4943 */ 4944 dma_sync_single_range_for_cpu(rx_ring->dev, 4945 buffer_info->dma, 4946 buffer_info->page_offset, 4947 igb_rx_bufsz(rx_ring), 4948 DMA_FROM_DEVICE); 4949 4950 /* free resources associated with mapping */ 4951 dma_unmap_page_attrs(rx_ring->dev, 4952 buffer_info->dma, 4953 igb_rx_pg_size(rx_ring), 4954 DMA_FROM_DEVICE, 4955 IGB_RX_DMA_ATTR); 4956 __page_frag_cache_drain(buffer_info->page, 4957 buffer_info->pagecnt_bias); 4958 4959 i++; 4960 if (i == rx_ring->count) 4961 i = 0; 4962 } 4963 4964 rx_ring->next_to_alloc = 0; 4965 rx_ring->next_to_clean = 0; 4966 rx_ring->next_to_use = 0; 4967 } 4968 4969 /** 4970 * igb_clean_all_rx_rings - Free Rx Buffers for all queues 4971 * @adapter: board private structure 4972 **/ 4973 static void igb_clean_all_rx_rings(struct igb_adapter *adapter) 4974 { 4975 int i; 4976 4977 for (i = 0; i < adapter->num_rx_queues; i++) 4978 if (adapter->rx_ring[i]) 4979 igb_clean_rx_ring(adapter->rx_ring[i]); 4980 } 4981 4982 /** 4983 * igb_set_mac - Change the Ethernet Address of the NIC 4984 * @netdev: network interface device structure 4985 * @p: pointer to an address structure 4986 * 4987 * Returns 0 on success, negative on failure 4988 **/ 4989 static int igb_set_mac(struct net_device *netdev, void *p) 4990 { 4991 struct igb_adapter *adapter = netdev_priv(netdev); 4992 struct e1000_hw *hw = &adapter->hw; 4993 struct sockaddr *addr = p; 4994 4995 if (!is_valid_ether_addr(addr->sa_data)) 4996 return -EADDRNOTAVAIL; 4997 4998 eth_hw_addr_set(netdev, addr->sa_data); 4999 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); 5000 5001 /* set the correct pool for the new PF MAC address in entry 0 */ 5002 igb_set_default_mac_filter(adapter); 5003 5004 return 0; 5005 } 5006 5007 /** 5008 * igb_write_mc_addr_list - write multicast addresses to MTA 5009 * @netdev: network interface device structure 5010 * 5011 * Writes multicast address list to the MTA hash table. 5012 * Returns: -ENOMEM on failure 5013 * 0 on no addresses written 5014 * X on writing X addresses to MTA 5015 **/ 5016 static int igb_write_mc_addr_list(struct net_device *netdev) 5017 { 5018 struct igb_adapter *adapter = netdev_priv(netdev); 5019 struct e1000_hw *hw = &adapter->hw; 5020 struct netdev_hw_addr *ha; 5021 u8 *mta_list; 5022 int i; 5023 5024 if (netdev_mc_empty(netdev)) { 5025 /* nothing to program, so clear mc list */ 5026 igb_update_mc_addr_list(hw, NULL, 0); 5027 igb_restore_vf_multicasts(adapter); 5028 return 0; 5029 } 5030 5031 mta_list = kcalloc(netdev_mc_count(netdev), 6, GFP_ATOMIC); 5032 if (!mta_list) 5033 return -ENOMEM; 5034 5035 /* The shared function expects a packed array of only addresses. */ 5036 i = 0; 5037 netdev_for_each_mc_addr(ha, netdev) 5038 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); 5039 5040 igb_update_mc_addr_list(hw, mta_list, i); 5041 kfree(mta_list); 5042 5043 return netdev_mc_count(netdev); 5044 } 5045 5046 static int igb_vlan_promisc_enable(struct igb_adapter *adapter) 5047 { 5048 struct e1000_hw *hw = &adapter->hw; 5049 u32 i, pf_id; 5050 5051 switch (hw->mac.type) { 5052 case e1000_i210: 5053 case e1000_i211: 5054 case e1000_i350: 5055 /* VLAN filtering needed for VLAN prio filter */ 5056 if (adapter->netdev->features & NETIF_F_NTUPLE) 5057 break; 5058 fallthrough; 5059 case e1000_82576: 5060 case e1000_82580: 5061 case e1000_i354: 5062 /* VLAN filtering needed for pool filtering */ 5063 if (adapter->vfs_allocated_count) 5064 break; 5065 fallthrough; 5066 default: 5067 return 1; 5068 } 5069 5070 /* We are already in VLAN promisc, nothing to do */ 5071 if (adapter->flags & IGB_FLAG_VLAN_PROMISC) 5072 return 0; 5073 5074 if (!adapter->vfs_allocated_count) 5075 goto set_vfta; 5076 5077 /* Add PF to all active pools */ 5078 pf_id = adapter->vfs_allocated_count + E1000_VLVF_POOLSEL_SHIFT; 5079 5080 for (i = E1000_VLVF_ARRAY_SIZE; --i;) { 5081 u32 vlvf = rd32(E1000_VLVF(i)); 5082 5083 vlvf |= BIT(pf_id); 5084 wr32(E1000_VLVF(i), vlvf); 5085 } 5086 5087 set_vfta: 5088 /* Set all bits in the VLAN filter table array */ 5089 for (i = E1000_VLAN_FILTER_TBL_SIZE; i--;) 5090 hw->mac.ops.write_vfta(hw, i, ~0U); 5091 5092 /* Set flag so we don't redo unnecessary work */ 5093 adapter->flags |= IGB_FLAG_VLAN_PROMISC; 5094 5095 return 0; 5096 } 5097 5098 #define VFTA_BLOCK_SIZE 8 5099 static void igb_scrub_vfta(struct igb_adapter *adapter, u32 vfta_offset) 5100 { 5101 struct e1000_hw *hw = &adapter->hw; 5102 u32 vfta[VFTA_BLOCK_SIZE] = { 0 }; 5103 u32 vid_start = vfta_offset * 32; 5104 u32 vid_end = vid_start + (VFTA_BLOCK_SIZE * 32); 5105 u32 i, vid, word, bits, pf_id; 5106 5107 /* guarantee that we don't scrub out management VLAN */ 5108 vid = adapter->mng_vlan_id; 5109 if (vid >= vid_start && vid < vid_end) 5110 vfta[(vid - vid_start) / 32] |= BIT(vid % 32); 5111 5112 if (!adapter->vfs_allocated_count) 5113 goto set_vfta; 5114 5115 pf_id = adapter->vfs_allocated_count + E1000_VLVF_POOLSEL_SHIFT; 5116 5117 for (i = E1000_VLVF_ARRAY_SIZE; --i;) { 5118 u32 vlvf = rd32(E1000_VLVF(i)); 5119 5120 /* pull VLAN ID from VLVF */ 5121 vid = vlvf & VLAN_VID_MASK; 5122 5123 /* only concern ourselves with a certain range */ 5124 if (vid < vid_start || vid >= vid_end) 5125 continue; 5126 5127 if (vlvf & E1000_VLVF_VLANID_ENABLE) { 5128 /* record VLAN ID in VFTA */ 5129 vfta[(vid - vid_start) / 32] |= BIT(vid % 32); 5130 5131 /* if PF is part of this then continue */ 5132 if (test_bit(vid, adapter->active_vlans)) 5133 continue; 5134 } 5135 5136 /* remove PF from the pool */ 5137 bits = ~BIT(pf_id); 5138 bits &= rd32(E1000_VLVF(i)); 5139 wr32(E1000_VLVF(i), bits); 5140 } 5141 5142 set_vfta: 5143 /* extract values from active_vlans and write back to VFTA */ 5144 for (i = VFTA_BLOCK_SIZE; i--;) { 5145 vid = (vfta_offset + i) * 32; 5146 word = vid / BITS_PER_LONG; 5147 bits = vid % BITS_PER_LONG; 5148 5149 vfta[i] |= adapter->active_vlans[word] >> bits; 5150 5151 hw->mac.ops.write_vfta(hw, vfta_offset + i, vfta[i]); 5152 } 5153 } 5154 5155 static void igb_vlan_promisc_disable(struct igb_adapter *adapter) 5156 { 5157 u32 i; 5158 5159 /* We are not in VLAN promisc, nothing to do */ 5160 if (!(adapter->flags & IGB_FLAG_VLAN_PROMISC)) 5161 return; 5162 5163 /* Set flag so we don't redo unnecessary work */ 5164 adapter->flags &= ~IGB_FLAG_VLAN_PROMISC; 5165 5166 for (i = 0; i < E1000_VLAN_FILTER_TBL_SIZE; i += VFTA_BLOCK_SIZE) 5167 igb_scrub_vfta(adapter, i); 5168 } 5169 5170 /** 5171 * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set 5172 * @netdev: network interface device structure 5173 * 5174 * The set_rx_mode entry point is called whenever the unicast or multicast 5175 * address lists or the network interface flags are updated. This routine is 5176 * responsible for configuring the hardware for proper unicast, multicast, 5177 * promiscuous mode, and all-multi behavior. 5178 **/ 5179 static void igb_set_rx_mode(struct net_device *netdev) 5180 { 5181 struct igb_adapter *adapter = netdev_priv(netdev); 5182 struct e1000_hw *hw = &adapter->hw; 5183 unsigned int vfn = adapter->vfs_allocated_count; 5184 u32 rctl = 0, vmolr = 0, rlpml = MAX_JUMBO_FRAME_SIZE; 5185 int count; 5186 5187 /* Check for Promiscuous and All Multicast modes */ 5188 if (netdev->flags & IFF_PROMISC) { 5189 rctl |= E1000_RCTL_UPE | E1000_RCTL_MPE; 5190 vmolr |= E1000_VMOLR_MPME; 5191 5192 /* enable use of UTA filter to force packets to default pool */ 5193 if (hw->mac.type == e1000_82576) 5194 vmolr |= E1000_VMOLR_ROPE; 5195 } else { 5196 if (netdev->flags & IFF_ALLMULTI) { 5197 rctl |= E1000_RCTL_MPE; 5198 vmolr |= E1000_VMOLR_MPME; 5199 } else { 5200 /* Write addresses to the MTA, if the attempt fails 5201 * then we should just turn on promiscuous mode so 5202 * that we can at least receive multicast traffic 5203 */ 5204 count = igb_write_mc_addr_list(netdev); 5205 if (count < 0) { 5206 rctl |= E1000_RCTL_MPE; 5207 vmolr |= E1000_VMOLR_MPME; 5208 } else if (count) { 5209 vmolr |= E1000_VMOLR_ROMPE; 5210 } 5211 } 5212 } 5213 5214 /* Write addresses to available RAR registers, if there is not 5215 * sufficient space to store all the addresses then enable 5216 * unicast promiscuous mode 5217 */ 5218 if (__dev_uc_sync(netdev, igb_uc_sync, igb_uc_unsync)) { 5219 rctl |= E1000_RCTL_UPE; 5220 vmolr |= E1000_VMOLR_ROPE; 5221 } 5222 5223 /* enable VLAN filtering by default */ 5224 rctl |= E1000_RCTL_VFE; 5225 5226 /* disable VLAN filtering for modes that require it */ 5227 if ((netdev->flags & IFF_PROMISC) || 5228 (netdev->features & NETIF_F_RXALL)) { 5229 /* if we fail to set all rules then just clear VFE */ 5230 if (igb_vlan_promisc_enable(adapter)) 5231 rctl &= ~E1000_RCTL_VFE; 5232 } else { 5233 igb_vlan_promisc_disable(adapter); 5234 } 5235 5236 /* update state of unicast, multicast, and VLAN filtering modes */ 5237 rctl |= rd32(E1000_RCTL) & ~(E1000_RCTL_UPE | E1000_RCTL_MPE | 5238 E1000_RCTL_VFE); 5239 wr32(E1000_RCTL, rctl); 5240 5241 #if (PAGE_SIZE < 8192) 5242 if (!adapter->vfs_allocated_count) { 5243 if (adapter->max_frame_size <= IGB_MAX_FRAME_BUILD_SKB) 5244 rlpml = IGB_MAX_FRAME_BUILD_SKB; 5245 } 5246 #endif 5247 wr32(E1000_RLPML, rlpml); 5248 5249 /* In order to support SR-IOV and eventually VMDq it is necessary to set 5250 * the VMOLR to enable the appropriate modes. Without this workaround 5251 * we will have issues with VLAN tag stripping not being done for frames 5252 * that are only arriving because we are the default pool 5253 */ 5254 if ((hw->mac.type < e1000_82576) || (hw->mac.type > e1000_i350)) 5255 return; 5256 5257 /* set UTA to appropriate mode */ 5258 igb_set_uta(adapter, !!(vmolr & E1000_VMOLR_ROPE)); 5259 5260 vmolr |= rd32(E1000_VMOLR(vfn)) & 5261 ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE); 5262 5263 /* enable Rx jumbo frames, restrict as needed to support build_skb */ 5264 vmolr &= ~E1000_VMOLR_RLPML_MASK; 5265 #if (PAGE_SIZE < 8192) 5266 if (adapter->max_frame_size <= IGB_MAX_FRAME_BUILD_SKB) 5267 vmolr |= IGB_MAX_FRAME_BUILD_SKB; 5268 else 5269 #endif 5270 vmolr |= MAX_JUMBO_FRAME_SIZE; 5271 vmolr |= E1000_VMOLR_LPE; 5272 5273 wr32(E1000_VMOLR(vfn), vmolr); 5274 5275 igb_restore_vf_multicasts(adapter); 5276 } 5277 5278 static void igb_check_wvbr(struct igb_adapter *adapter) 5279 { 5280 struct e1000_hw *hw = &adapter->hw; 5281 u32 wvbr = 0; 5282 5283 switch (hw->mac.type) { 5284 case e1000_82576: 5285 case e1000_i350: 5286 wvbr = rd32(E1000_WVBR); 5287 if (!wvbr) 5288 return; 5289 break; 5290 default: 5291 break; 5292 } 5293 5294 adapter->wvbr |= wvbr; 5295 } 5296 5297 #define IGB_STAGGERED_QUEUE_OFFSET 8 5298 5299 static void igb_spoof_check(struct igb_adapter *adapter) 5300 { 5301 int j; 5302 5303 if (!adapter->wvbr) 5304 return; 5305 5306 for (j = 0; j < adapter->vfs_allocated_count; j++) { 5307 if (adapter->wvbr & BIT(j) || 5308 adapter->wvbr & BIT(j + IGB_STAGGERED_QUEUE_OFFSET)) { 5309 dev_warn(&adapter->pdev->dev, 5310 "Spoof event(s) detected on VF %d\n", j); 5311 adapter->wvbr &= 5312 ~(BIT(j) | 5313 BIT(j + IGB_STAGGERED_QUEUE_OFFSET)); 5314 } 5315 } 5316 } 5317 5318 /* Need to wait a few seconds after link up to get diagnostic information from 5319 * the phy 5320 */ 5321 static void igb_update_phy_info(struct timer_list *t) 5322 { 5323 struct igb_adapter *adapter = from_timer(adapter, t, phy_info_timer); 5324 igb_get_phy_info(&adapter->hw); 5325 } 5326 5327 /** 5328 * igb_has_link - check shared code for link and determine up/down 5329 * @adapter: pointer to driver private info 5330 **/ 5331 bool igb_has_link(struct igb_adapter *adapter) 5332 { 5333 struct e1000_hw *hw = &adapter->hw; 5334 bool link_active = false; 5335 5336 /* get_link_status is set on LSC (link status) interrupt or 5337 * rx sequence error interrupt. get_link_status will stay 5338 * false until the e1000_check_for_link establishes link 5339 * for copper adapters ONLY 5340 */ 5341 switch (hw->phy.media_type) { 5342 case e1000_media_type_copper: 5343 if (!hw->mac.get_link_status) 5344 return true; 5345 fallthrough; 5346 case e1000_media_type_internal_serdes: 5347 hw->mac.ops.check_for_link(hw); 5348 link_active = !hw->mac.get_link_status; 5349 break; 5350 default: 5351 case e1000_media_type_unknown: 5352 break; 5353 } 5354 5355 if (((hw->mac.type == e1000_i210) || 5356 (hw->mac.type == e1000_i211)) && 5357 (hw->phy.id == I210_I_PHY_ID)) { 5358 if (!netif_carrier_ok(adapter->netdev)) { 5359 adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; 5360 } else if (!(adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)) { 5361 adapter->flags |= IGB_FLAG_NEED_LINK_UPDATE; 5362 adapter->link_check_timeout = jiffies; 5363 } 5364 } 5365 5366 return link_active; 5367 } 5368 5369 static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event) 5370 { 5371 bool ret = false; 5372 u32 ctrl_ext, thstat; 5373 5374 /* check for thermal sensor event on i350 copper only */ 5375 if (hw->mac.type == e1000_i350) { 5376 thstat = rd32(E1000_THSTAT); 5377 ctrl_ext = rd32(E1000_CTRL_EXT); 5378 5379 if ((hw->phy.media_type == e1000_media_type_copper) && 5380 !(ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII)) 5381 ret = !!(thstat & event); 5382 } 5383 5384 return ret; 5385 } 5386 5387 /** 5388 * igb_check_lvmmc - check for malformed packets received 5389 * and indicated in LVMMC register 5390 * @adapter: pointer to adapter 5391 **/ 5392 static void igb_check_lvmmc(struct igb_adapter *adapter) 5393 { 5394 struct e1000_hw *hw = &adapter->hw; 5395 u32 lvmmc; 5396 5397 lvmmc = rd32(E1000_LVMMC); 5398 if (lvmmc) { 5399 if (unlikely(net_ratelimit())) { 5400 netdev_warn(adapter->netdev, 5401 "malformed Tx packet detected and dropped, LVMMC:0x%08x\n", 5402 lvmmc); 5403 } 5404 } 5405 } 5406 5407 /** 5408 * igb_watchdog - Timer Call-back 5409 * @t: pointer to timer_list containing our private info pointer 5410 **/ 5411 static void igb_watchdog(struct timer_list *t) 5412 { 5413 struct igb_adapter *adapter = from_timer(adapter, t, watchdog_timer); 5414 /* Do the rest outside of interrupt context */ 5415 schedule_work(&adapter->watchdog_task); 5416 } 5417 5418 static void igb_watchdog_task(struct work_struct *work) 5419 { 5420 struct igb_adapter *adapter = container_of(work, 5421 struct igb_adapter, 5422 watchdog_task); 5423 struct e1000_hw *hw = &adapter->hw; 5424 struct e1000_phy_info *phy = &hw->phy; 5425 struct net_device *netdev = adapter->netdev; 5426 u32 link; 5427 int i; 5428 u32 connsw; 5429 u16 phy_data, retry_count = 20; 5430 5431 link = igb_has_link(adapter); 5432 5433 if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) { 5434 if (time_after(jiffies, (adapter->link_check_timeout + HZ))) 5435 adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; 5436 else 5437 link = false; 5438 } 5439 5440 /* Force link down if we have fiber to swap to */ 5441 if (adapter->flags & IGB_FLAG_MAS_ENABLE) { 5442 if (hw->phy.media_type == e1000_media_type_copper) { 5443 connsw = rd32(E1000_CONNSW); 5444 if (!(connsw & E1000_CONNSW_AUTOSENSE_EN)) 5445 link = 0; 5446 } 5447 } 5448 if (link) { 5449 /* Perform a reset if the media type changed. */ 5450 if (hw->dev_spec._82575.media_changed) { 5451 hw->dev_spec._82575.media_changed = false; 5452 adapter->flags |= IGB_FLAG_MEDIA_RESET; 5453 igb_reset(adapter); 5454 } 5455 /* Cancel scheduled suspend requests. */ 5456 pm_runtime_resume(netdev->dev.parent); 5457 5458 if (!netif_carrier_ok(netdev)) { 5459 u32 ctrl; 5460 5461 hw->mac.ops.get_speed_and_duplex(hw, 5462 &adapter->link_speed, 5463 &adapter->link_duplex); 5464 5465 ctrl = rd32(E1000_CTRL); 5466 /* Links status message must follow this format */ 5467 netdev_info(netdev, 5468 "igb: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", 5469 netdev->name, 5470 adapter->link_speed, 5471 adapter->link_duplex == FULL_DUPLEX ? 5472 "Full" : "Half", 5473 (ctrl & E1000_CTRL_TFCE) && 5474 (ctrl & E1000_CTRL_RFCE) ? "RX/TX" : 5475 (ctrl & E1000_CTRL_RFCE) ? "RX" : 5476 (ctrl & E1000_CTRL_TFCE) ? "TX" : "None"); 5477 5478 /* disable EEE if enabled */ 5479 if ((adapter->flags & IGB_FLAG_EEE) && 5480 (adapter->link_duplex == HALF_DUPLEX)) { 5481 dev_info(&adapter->pdev->dev, 5482 "EEE Disabled: unsupported at half duplex. Re-enable using ethtool when at full duplex.\n"); 5483 adapter->hw.dev_spec._82575.eee_disable = true; 5484 adapter->flags &= ~IGB_FLAG_EEE; 5485 } 5486 5487 /* check if SmartSpeed worked */ 5488 igb_check_downshift(hw); 5489 if (phy->speed_downgraded) 5490 netdev_warn(netdev, "Link Speed was downgraded by SmartSpeed\n"); 5491 5492 /* check for thermal sensor event */ 5493 if (igb_thermal_sensor_event(hw, 5494 E1000_THSTAT_LINK_THROTTLE)) 5495 netdev_info(netdev, "The network adapter link speed was downshifted because it overheated\n"); 5496 5497 /* adjust timeout factor according to speed/duplex */ 5498 adapter->tx_timeout_factor = 1; 5499 switch (adapter->link_speed) { 5500 case SPEED_10: 5501 adapter->tx_timeout_factor = 14; 5502 break; 5503 case SPEED_100: 5504 /* maybe add some timeout factor ? */ 5505 break; 5506 } 5507 5508 if (adapter->link_speed != SPEED_1000) 5509 goto no_wait; 5510 5511 /* wait for Remote receiver status OK */ 5512 retry_read_status: 5513 if (!igb_read_phy_reg(hw, PHY_1000T_STATUS, 5514 &phy_data)) { 5515 if (!(phy_data & SR_1000T_REMOTE_RX_STATUS) && 5516 retry_count) { 5517 msleep(100); 5518 retry_count--; 5519 goto retry_read_status; 5520 } else if (!retry_count) { 5521 dev_err(&adapter->pdev->dev, "exceed max 2 second\n"); 5522 } 5523 } else { 5524 dev_err(&adapter->pdev->dev, "read 1000Base-T Status Reg\n"); 5525 } 5526 no_wait: 5527 netif_carrier_on(netdev); 5528 5529 igb_ping_all_vfs(adapter); 5530 igb_check_vf_rate_limit(adapter); 5531 5532 /* link state has changed, schedule phy info update */ 5533 if (!test_bit(__IGB_DOWN, &adapter->state)) 5534 mod_timer(&adapter->phy_info_timer, 5535 round_jiffies(jiffies + 2 * HZ)); 5536 } 5537 } else { 5538 if (netif_carrier_ok(netdev)) { 5539 adapter->link_speed = 0; 5540 adapter->link_duplex = 0; 5541 5542 /* check for thermal sensor event */ 5543 if (igb_thermal_sensor_event(hw, 5544 E1000_THSTAT_PWR_DOWN)) { 5545 netdev_err(netdev, "The network adapter was stopped because it overheated\n"); 5546 } 5547 5548 /* Links status message must follow this format */ 5549 netdev_info(netdev, "igb: %s NIC Link is Down\n", 5550 netdev->name); 5551 netif_carrier_off(netdev); 5552 5553 igb_ping_all_vfs(adapter); 5554 5555 /* link state has changed, schedule phy info update */ 5556 if (!test_bit(__IGB_DOWN, &adapter->state)) 5557 mod_timer(&adapter->phy_info_timer, 5558 round_jiffies(jiffies + 2 * HZ)); 5559 5560 /* link is down, time to check for alternate media */ 5561 if (adapter->flags & IGB_FLAG_MAS_ENABLE) { 5562 igb_check_swap_media(adapter); 5563 if (adapter->flags & IGB_FLAG_MEDIA_RESET) { 5564 schedule_work(&adapter->reset_task); 5565 /* return immediately */ 5566 return; 5567 } 5568 } 5569 pm_schedule_suspend(netdev->dev.parent, 5570 MSEC_PER_SEC * 5); 5571 5572 /* also check for alternate media here */ 5573 } else if (!netif_carrier_ok(netdev) && 5574 (adapter->flags & IGB_FLAG_MAS_ENABLE)) { 5575 igb_check_swap_media(adapter); 5576 if (adapter->flags & IGB_FLAG_MEDIA_RESET) { 5577 schedule_work(&adapter->reset_task); 5578 /* return immediately */ 5579 return; 5580 } 5581 } 5582 } 5583 5584 spin_lock(&adapter->stats64_lock); 5585 igb_update_stats(adapter); 5586 spin_unlock(&adapter->stats64_lock); 5587 5588 for (i = 0; i < adapter->num_tx_queues; i++) { 5589 struct igb_ring *tx_ring = adapter->tx_ring[i]; 5590 if (!netif_carrier_ok(netdev)) { 5591 /* We've lost link, so the controller stops DMA, 5592 * but we've got queued Tx work that's never going 5593 * to get done, so reset controller to flush Tx. 5594 * (Do the reset outside of interrupt context). 5595 */ 5596 if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) { 5597 adapter->tx_timeout_count++; 5598 schedule_work(&adapter->reset_task); 5599 /* return immediately since reset is imminent */ 5600 return; 5601 } 5602 } 5603 5604 /* Force detection of hung controller every watchdog period */ 5605 set_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); 5606 } 5607 5608 /* Cause software interrupt to ensure Rx ring is cleaned */ 5609 if (adapter->flags & IGB_FLAG_HAS_MSIX) { 5610 u32 eics = 0; 5611 5612 for (i = 0; i < adapter->num_q_vectors; i++) 5613 eics |= adapter->q_vector[i]->eims_value; 5614 wr32(E1000_EICS, eics); 5615 } else { 5616 wr32(E1000_ICS, E1000_ICS_RXDMT0); 5617 } 5618 5619 igb_spoof_check(adapter); 5620 igb_ptp_rx_hang(adapter); 5621 igb_ptp_tx_hang(adapter); 5622 5623 /* Check LVMMC register on i350/i354 only */ 5624 if ((adapter->hw.mac.type == e1000_i350) || 5625 (adapter->hw.mac.type == e1000_i354)) 5626 igb_check_lvmmc(adapter); 5627 5628 /* Reset the timer */ 5629 if (!test_bit(__IGB_DOWN, &adapter->state)) { 5630 if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) 5631 mod_timer(&adapter->watchdog_timer, 5632 round_jiffies(jiffies + HZ)); 5633 else 5634 mod_timer(&adapter->watchdog_timer, 5635 round_jiffies(jiffies + 2 * HZ)); 5636 } 5637 } 5638 5639 enum latency_range { 5640 lowest_latency = 0, 5641 low_latency = 1, 5642 bulk_latency = 2, 5643 latency_invalid = 255 5644 }; 5645 5646 /** 5647 * igb_update_ring_itr - update the dynamic ITR value based on packet size 5648 * @q_vector: pointer to q_vector 5649 * 5650 * Stores a new ITR value based on strictly on packet size. This 5651 * algorithm is less sophisticated than that used in igb_update_itr, 5652 * due to the difficulty of synchronizing statistics across multiple 5653 * receive rings. The divisors and thresholds used by this function 5654 * were determined based on theoretical maximum wire speed and testing 5655 * data, in order to minimize response time while increasing bulk 5656 * throughput. 5657 * This functionality is controlled by ethtool's coalescing settings. 5658 * NOTE: This function is called only when operating in a multiqueue 5659 * receive environment. 5660 **/ 5661 static void igb_update_ring_itr(struct igb_q_vector *q_vector) 5662 { 5663 int new_val = q_vector->itr_val; 5664 int avg_wire_size = 0; 5665 struct igb_adapter *adapter = q_vector->adapter; 5666 unsigned int packets; 5667 5668 /* For non-gigabit speeds, just fix the interrupt rate at 4000 5669 * ints/sec - ITR timer value of 120 ticks. 5670 */ 5671 if (adapter->link_speed != SPEED_1000) { 5672 new_val = IGB_4K_ITR; 5673 goto set_itr_val; 5674 } 5675 5676 packets = q_vector->rx.total_packets; 5677 if (packets) 5678 avg_wire_size = q_vector->rx.total_bytes / packets; 5679 5680 packets = q_vector->tx.total_packets; 5681 if (packets) 5682 avg_wire_size = max_t(u32, avg_wire_size, 5683 q_vector->tx.total_bytes / packets); 5684 5685 /* if avg_wire_size isn't set no work was done */ 5686 if (!avg_wire_size) 5687 goto clear_counts; 5688 5689 /* Add 24 bytes to size to account for CRC, preamble, and gap */ 5690 avg_wire_size += 24; 5691 5692 /* Don't starve jumbo frames */ 5693 avg_wire_size = min(avg_wire_size, 3000); 5694 5695 /* Give a little boost to mid-size frames */ 5696 if ((avg_wire_size > 300) && (avg_wire_size < 1200)) 5697 new_val = avg_wire_size / 3; 5698 else 5699 new_val = avg_wire_size / 2; 5700 5701 /* conservative mode (itr 3) eliminates the lowest_latency setting */ 5702 if (new_val < IGB_20K_ITR && 5703 ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || 5704 (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) 5705 new_val = IGB_20K_ITR; 5706 5707 set_itr_val: 5708 if (new_val != q_vector->itr_val) { 5709 q_vector->itr_val = new_val; 5710 q_vector->set_itr = 1; 5711 } 5712 clear_counts: 5713 q_vector->rx.total_bytes = 0; 5714 q_vector->rx.total_packets = 0; 5715 q_vector->tx.total_bytes = 0; 5716 q_vector->tx.total_packets = 0; 5717 } 5718 5719 /** 5720 * igb_update_itr - update the dynamic ITR value based on statistics 5721 * @q_vector: pointer to q_vector 5722 * @ring_container: ring info to update the itr for 5723 * 5724 * Stores a new ITR value based on packets and byte 5725 * counts during the last interrupt. The advantage of per interrupt 5726 * computation is faster updates and more accurate ITR for the current 5727 * traffic pattern. Constants in this function were computed 5728 * based on theoretical maximum wire speed and thresholds were set based 5729 * on testing data as well as attempting to minimize response time 5730 * while increasing bulk throughput. 5731 * This functionality is controlled by ethtool's coalescing settings. 5732 * NOTE: These calculations are only valid when operating in a single- 5733 * queue environment. 5734 **/ 5735 static void igb_update_itr(struct igb_q_vector *q_vector, 5736 struct igb_ring_container *ring_container) 5737 { 5738 unsigned int packets = ring_container->total_packets; 5739 unsigned int bytes = ring_container->total_bytes; 5740 u8 itrval = ring_container->itr; 5741 5742 /* no packets, exit with status unchanged */ 5743 if (packets == 0) 5744 return; 5745 5746 switch (itrval) { 5747 case lowest_latency: 5748 /* handle TSO and jumbo frames */ 5749 if (bytes/packets > 8000) 5750 itrval = bulk_latency; 5751 else if ((packets < 5) && (bytes > 512)) 5752 itrval = low_latency; 5753 break; 5754 case low_latency: /* 50 usec aka 20000 ints/s */ 5755 if (bytes > 10000) { 5756 /* this if handles the TSO accounting */ 5757 if (bytes/packets > 8000) 5758 itrval = bulk_latency; 5759 else if ((packets < 10) || ((bytes/packets) > 1200)) 5760 itrval = bulk_latency; 5761 else if ((packets > 35)) 5762 itrval = lowest_latency; 5763 } else if (bytes/packets > 2000) { 5764 itrval = bulk_latency; 5765 } else if (packets <= 2 && bytes < 512) { 5766 itrval = lowest_latency; 5767 } 5768 break; 5769 case bulk_latency: /* 250 usec aka 4000 ints/s */ 5770 if (bytes > 25000) { 5771 if (packets > 35) 5772 itrval = low_latency; 5773 } else if (bytes < 1500) { 5774 itrval = low_latency; 5775 } 5776 break; 5777 } 5778 5779 /* clear work counters since we have the values we need */ 5780 ring_container->total_bytes = 0; 5781 ring_container->total_packets = 0; 5782 5783 /* write updated itr to ring container */ 5784 ring_container->itr = itrval; 5785 } 5786 5787 static void igb_set_itr(struct igb_q_vector *q_vector) 5788 { 5789 struct igb_adapter *adapter = q_vector->adapter; 5790 u32 new_itr = q_vector->itr_val; 5791 u8 current_itr = 0; 5792 5793 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ 5794 if (adapter->link_speed != SPEED_1000) { 5795 current_itr = 0; 5796 new_itr = IGB_4K_ITR; 5797 goto set_itr_now; 5798 } 5799 5800 igb_update_itr(q_vector, &q_vector->tx); 5801 igb_update_itr(q_vector, &q_vector->rx); 5802 5803 current_itr = max(q_vector->rx.itr, q_vector->tx.itr); 5804 5805 /* conservative mode (itr 3) eliminates the lowest_latency setting */ 5806 if (current_itr == lowest_latency && 5807 ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || 5808 (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) 5809 current_itr = low_latency; 5810 5811 switch (current_itr) { 5812 /* counts and packets in update_itr are dependent on these numbers */ 5813 case lowest_latency: 5814 new_itr = IGB_70K_ITR; /* 70,000 ints/sec */ 5815 break; 5816 case low_latency: 5817 new_itr = IGB_20K_ITR; /* 20,000 ints/sec */ 5818 break; 5819 case bulk_latency: 5820 new_itr = IGB_4K_ITR; /* 4,000 ints/sec */ 5821 break; 5822 default: 5823 break; 5824 } 5825 5826 set_itr_now: 5827 if (new_itr != q_vector->itr_val) { 5828 /* this attempts to bias the interrupt rate towards Bulk 5829 * by adding intermediate steps when interrupt rate is 5830 * increasing 5831 */ 5832 new_itr = new_itr > q_vector->itr_val ? 5833 max((new_itr * q_vector->itr_val) / 5834 (new_itr + (q_vector->itr_val >> 2)), 5835 new_itr) : new_itr; 5836 /* Don't write the value here; it resets the adapter's 5837 * internal timer, and causes us to delay far longer than 5838 * we should between interrupts. Instead, we write the ITR 5839 * value at the beginning of the next interrupt so the timing 5840 * ends up being correct. 5841 */ 5842 q_vector->itr_val = new_itr; 5843 q_vector->set_itr = 1; 5844 } 5845 } 5846 5847 static void igb_tx_ctxtdesc(struct igb_ring *tx_ring, 5848 struct igb_tx_buffer *first, 5849 u32 vlan_macip_lens, u32 type_tucmd, 5850 u32 mss_l4len_idx) 5851 { 5852 struct e1000_adv_tx_context_desc *context_desc; 5853 u16 i = tx_ring->next_to_use; 5854 struct timespec64 ts; 5855 5856 context_desc = IGB_TX_CTXTDESC(tx_ring, i); 5857 5858 i++; 5859 tx_ring->next_to_use = (i < tx_ring->count) ? i : 0; 5860 5861 /* set bits to identify this as an advanced context descriptor */ 5862 type_tucmd |= E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT; 5863 5864 /* For 82575, context index must be unique per ring. */ 5865 if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) 5866 mss_l4len_idx |= tx_ring->reg_idx << 4; 5867 5868 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); 5869 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd); 5870 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); 5871 5872 /* We assume there is always a valid tx time available. Invalid times 5873 * should have been handled by the upper layers. 5874 */ 5875 if (tx_ring->launchtime_enable) { 5876 ts = ktime_to_timespec64(first->skb->tstamp); 5877 skb_txtime_consumed(first->skb); 5878 context_desc->seqnum_seed = cpu_to_le32(ts.tv_nsec / 32); 5879 } else { 5880 context_desc->seqnum_seed = 0; 5881 } 5882 } 5883 5884 static int igb_tso(struct igb_ring *tx_ring, 5885 struct igb_tx_buffer *first, 5886 u8 *hdr_len) 5887 { 5888 u32 vlan_macip_lens, type_tucmd, mss_l4len_idx; 5889 struct sk_buff *skb = first->skb; 5890 union { 5891 struct iphdr *v4; 5892 struct ipv6hdr *v6; 5893 unsigned char *hdr; 5894 } ip; 5895 union { 5896 struct tcphdr *tcp; 5897 struct udphdr *udp; 5898 unsigned char *hdr; 5899 } l4; 5900 u32 paylen, l4_offset; 5901 int err; 5902 5903 if (skb->ip_summed != CHECKSUM_PARTIAL) 5904 return 0; 5905 5906 if (!skb_is_gso(skb)) 5907 return 0; 5908 5909 err = skb_cow_head(skb, 0); 5910 if (err < 0) 5911 return err; 5912 5913 ip.hdr = skb_network_header(skb); 5914 l4.hdr = skb_checksum_start(skb); 5915 5916 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ 5917 type_tucmd = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ? 5918 E1000_ADVTXD_TUCMD_L4T_UDP : E1000_ADVTXD_TUCMD_L4T_TCP; 5919 5920 /* initialize outer IP header fields */ 5921 if (ip.v4->version == 4) { 5922 unsigned char *csum_start = skb_checksum_start(skb); 5923 unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4); 5924 5925 /* IP header will have to cancel out any data that 5926 * is not a part of the outer IP header 5927 */ 5928 ip.v4->check = csum_fold(csum_partial(trans_start, 5929 csum_start - trans_start, 5930 0)); 5931 type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; 5932 5933 ip.v4->tot_len = 0; 5934 first->tx_flags |= IGB_TX_FLAGS_TSO | 5935 IGB_TX_FLAGS_CSUM | 5936 IGB_TX_FLAGS_IPV4; 5937 } else { 5938 ip.v6->payload_len = 0; 5939 first->tx_flags |= IGB_TX_FLAGS_TSO | 5940 IGB_TX_FLAGS_CSUM; 5941 } 5942 5943 /* determine offset of inner transport header */ 5944 l4_offset = l4.hdr - skb->data; 5945 5946 /* remove payload length from inner checksum */ 5947 paylen = skb->len - l4_offset; 5948 if (type_tucmd & E1000_ADVTXD_TUCMD_L4T_TCP) { 5949 /* compute length of segmentation header */ 5950 *hdr_len = (l4.tcp->doff * 4) + l4_offset; 5951 csum_replace_by_diff(&l4.tcp->check, 5952 (__force __wsum)htonl(paylen)); 5953 } else { 5954 /* compute length of segmentation header */ 5955 *hdr_len = sizeof(*l4.udp) + l4_offset; 5956 csum_replace_by_diff(&l4.udp->check, 5957 (__force __wsum)htonl(paylen)); 5958 } 5959 5960 /* update gso size and bytecount with header size */ 5961 first->gso_segs = skb_shinfo(skb)->gso_segs; 5962 first->bytecount += (first->gso_segs - 1) * *hdr_len; 5963 5964 /* MSS L4LEN IDX */ 5965 mss_l4len_idx = (*hdr_len - l4_offset) << E1000_ADVTXD_L4LEN_SHIFT; 5966 mss_l4len_idx |= skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT; 5967 5968 /* VLAN MACLEN IPLEN */ 5969 vlan_macip_lens = l4.hdr - ip.hdr; 5970 vlan_macip_lens |= (ip.hdr - skb->data) << E1000_ADVTXD_MACLEN_SHIFT; 5971 vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; 5972 5973 igb_tx_ctxtdesc(tx_ring, first, vlan_macip_lens, 5974 type_tucmd, mss_l4len_idx); 5975 5976 return 1; 5977 } 5978 5979 static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first) 5980 { 5981 struct sk_buff *skb = first->skb; 5982 u32 vlan_macip_lens = 0; 5983 u32 type_tucmd = 0; 5984 5985 if (skb->ip_summed != CHECKSUM_PARTIAL) { 5986 csum_failed: 5987 if (!(first->tx_flags & IGB_TX_FLAGS_VLAN) && 5988 !tx_ring->launchtime_enable) 5989 return; 5990 goto no_csum; 5991 } 5992 5993 switch (skb->csum_offset) { 5994 case offsetof(struct tcphdr, check): 5995 type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP; 5996 fallthrough; 5997 case offsetof(struct udphdr, check): 5998 break; 5999 case offsetof(struct sctphdr, checksum): 6000 /* validate that this is actually an SCTP request */ 6001 if (skb_csum_is_sctp(skb)) { 6002 type_tucmd = E1000_ADVTXD_TUCMD_L4T_SCTP; 6003 break; 6004 } 6005 fallthrough; 6006 default: 6007 skb_checksum_help(skb); 6008 goto csum_failed; 6009 } 6010 6011 /* update TX checksum flag */ 6012 first->tx_flags |= IGB_TX_FLAGS_CSUM; 6013 vlan_macip_lens = skb_checksum_start_offset(skb) - 6014 skb_network_offset(skb); 6015 no_csum: 6016 vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; 6017 vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; 6018 6019 igb_tx_ctxtdesc(tx_ring, first, vlan_macip_lens, type_tucmd, 0); 6020 } 6021 6022 #define IGB_SET_FLAG(_input, _flag, _result) \ 6023 ((_flag <= _result) ? \ 6024 ((u32)(_input & _flag) * (_result / _flag)) : \ 6025 ((u32)(_input & _flag) / (_flag / _result))) 6026 6027 static u32 igb_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) 6028 { 6029 /* set type for advanced descriptor with frame checksum insertion */ 6030 u32 cmd_type = E1000_ADVTXD_DTYP_DATA | 6031 E1000_ADVTXD_DCMD_DEXT | 6032 E1000_ADVTXD_DCMD_IFCS; 6033 6034 /* set HW vlan bit if vlan is present */ 6035 cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_VLAN, 6036 (E1000_ADVTXD_DCMD_VLE)); 6037 6038 /* set segmentation bits for TSO */ 6039 cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSO, 6040 (E1000_ADVTXD_DCMD_TSE)); 6041 6042 /* set timestamp bit if present */ 6043 cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSTAMP, 6044 (E1000_ADVTXD_MAC_TSTAMP)); 6045 6046 /* insert frame checksum */ 6047 cmd_type ^= IGB_SET_FLAG(skb->no_fcs, 1, E1000_ADVTXD_DCMD_IFCS); 6048 6049 return cmd_type; 6050 } 6051 6052 static void igb_tx_olinfo_status(struct igb_ring *tx_ring, 6053 union e1000_adv_tx_desc *tx_desc, 6054 u32 tx_flags, unsigned int paylen) 6055 { 6056 u32 olinfo_status = paylen << E1000_ADVTXD_PAYLEN_SHIFT; 6057 6058 /* 82575 requires a unique index per ring */ 6059 if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) 6060 olinfo_status |= tx_ring->reg_idx << 4; 6061 6062 /* insert L4 checksum */ 6063 olinfo_status |= IGB_SET_FLAG(tx_flags, 6064 IGB_TX_FLAGS_CSUM, 6065 (E1000_TXD_POPTS_TXSM << 8)); 6066 6067 /* insert IPv4 checksum */ 6068 olinfo_status |= IGB_SET_FLAG(tx_flags, 6069 IGB_TX_FLAGS_IPV4, 6070 (E1000_TXD_POPTS_IXSM << 8)); 6071 6072 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); 6073 } 6074 6075 static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) 6076 { 6077 struct net_device *netdev = tx_ring->netdev; 6078 6079 netif_stop_subqueue(netdev, tx_ring->queue_index); 6080 6081 /* Herbert's original patch had: 6082 * smp_mb__after_netif_stop_queue(); 6083 * but since that doesn't exist yet, just open code it. 6084 */ 6085 smp_mb(); 6086 6087 /* We need to check again in a case another CPU has just 6088 * made room available. 6089 */ 6090 if (igb_desc_unused(tx_ring) < size) 6091 return -EBUSY; 6092 6093 /* A reprieve! */ 6094 netif_wake_subqueue(netdev, tx_ring->queue_index); 6095 6096 u64_stats_update_begin(&tx_ring->tx_syncp2); 6097 tx_ring->tx_stats.restart_queue2++; 6098 u64_stats_update_end(&tx_ring->tx_syncp2); 6099 6100 return 0; 6101 } 6102 6103 static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) 6104 { 6105 if (igb_desc_unused(tx_ring) >= size) 6106 return 0; 6107 return __igb_maybe_stop_tx(tx_ring, size); 6108 } 6109 6110 static int igb_tx_map(struct igb_ring *tx_ring, 6111 struct igb_tx_buffer *first, 6112 const u8 hdr_len) 6113 { 6114 struct sk_buff *skb = first->skb; 6115 struct igb_tx_buffer *tx_buffer; 6116 union e1000_adv_tx_desc *tx_desc; 6117 skb_frag_t *frag; 6118 dma_addr_t dma; 6119 unsigned int data_len, size; 6120 u32 tx_flags = first->tx_flags; 6121 u32 cmd_type = igb_tx_cmd_type(skb, tx_flags); 6122 u16 i = tx_ring->next_to_use; 6123 6124 tx_desc = IGB_TX_DESC(tx_ring, i); 6125 6126 igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, skb->len - hdr_len); 6127 6128 size = skb_headlen(skb); 6129 data_len = skb->data_len; 6130 6131 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); 6132 6133 tx_buffer = first; 6134 6135 for (frag = &skb_shinfo(skb)->frags[0];; frag++) { 6136 if (dma_mapping_error(tx_ring->dev, dma)) 6137 goto dma_error; 6138 6139 /* record length, and DMA address */ 6140 dma_unmap_len_set(tx_buffer, len, size); 6141 dma_unmap_addr_set(tx_buffer, dma, dma); 6142 6143 tx_desc->read.buffer_addr = cpu_to_le64(dma); 6144 6145 while (unlikely(size > IGB_MAX_DATA_PER_TXD)) { 6146 tx_desc->read.cmd_type_len = 6147 cpu_to_le32(cmd_type ^ IGB_MAX_DATA_PER_TXD); 6148 6149 i++; 6150 tx_desc++; 6151 if (i == tx_ring->count) { 6152 tx_desc = IGB_TX_DESC(tx_ring, 0); 6153 i = 0; 6154 } 6155 tx_desc->read.olinfo_status = 0; 6156 6157 dma += IGB_MAX_DATA_PER_TXD; 6158 size -= IGB_MAX_DATA_PER_TXD; 6159 6160 tx_desc->read.buffer_addr = cpu_to_le64(dma); 6161 } 6162 6163 if (likely(!data_len)) 6164 break; 6165 6166 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); 6167 6168 i++; 6169 tx_desc++; 6170 if (i == tx_ring->count) { 6171 tx_desc = IGB_TX_DESC(tx_ring, 0); 6172 i = 0; 6173 } 6174 tx_desc->read.olinfo_status = 0; 6175 6176 size = skb_frag_size(frag); 6177 data_len -= size; 6178 6179 dma = skb_frag_dma_map(tx_ring->dev, frag, 0, 6180 size, DMA_TO_DEVICE); 6181 6182 tx_buffer = &tx_ring->tx_buffer_info[i]; 6183 } 6184 6185 /* write last descriptor with RS and EOP bits */ 6186 cmd_type |= size | IGB_TXD_DCMD; 6187 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 6188 6189 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); 6190 6191 /* set the timestamp */ 6192 first->time_stamp = jiffies; 6193 6194 skb_tx_timestamp(skb); 6195 6196 /* Force memory writes to complete before letting h/w know there 6197 * are new descriptors to fetch. (Only applicable for weak-ordered 6198 * memory model archs, such as IA-64). 6199 * 6200 * We also need this memory barrier to make certain all of the 6201 * status bits have been updated before next_to_watch is written. 6202 */ 6203 dma_wmb(); 6204 6205 /* set next_to_watch value indicating a packet is present */ 6206 first->next_to_watch = tx_desc; 6207 6208 i++; 6209 if (i == tx_ring->count) 6210 i = 0; 6211 6212 tx_ring->next_to_use = i; 6213 6214 /* Make sure there is space in the ring for the next send. */ 6215 igb_maybe_stop_tx(tx_ring, DESC_NEEDED); 6216 6217 if (netif_xmit_stopped(txring_txq(tx_ring)) || !netdev_xmit_more()) { 6218 writel(i, tx_ring->tail); 6219 } 6220 return 0; 6221 6222 dma_error: 6223 dev_err(tx_ring->dev, "TX DMA map failed\n"); 6224 tx_buffer = &tx_ring->tx_buffer_info[i]; 6225 6226 /* clear dma mappings for failed tx_buffer_info map */ 6227 while (tx_buffer != first) { 6228 if (dma_unmap_len(tx_buffer, len)) 6229 dma_unmap_page(tx_ring->dev, 6230 dma_unmap_addr(tx_buffer, dma), 6231 dma_unmap_len(tx_buffer, len), 6232 DMA_TO_DEVICE); 6233 dma_unmap_len_set(tx_buffer, len, 0); 6234 6235 if (i-- == 0) 6236 i += tx_ring->count; 6237 tx_buffer = &tx_ring->tx_buffer_info[i]; 6238 } 6239 6240 if (dma_unmap_len(tx_buffer, len)) 6241 dma_unmap_single(tx_ring->dev, 6242 dma_unmap_addr(tx_buffer, dma), 6243 dma_unmap_len(tx_buffer, len), 6244 DMA_TO_DEVICE); 6245 dma_unmap_len_set(tx_buffer, len, 0); 6246 6247 dev_kfree_skb_any(tx_buffer->skb); 6248 tx_buffer->skb = NULL; 6249 6250 tx_ring->next_to_use = i; 6251 6252 return -1; 6253 } 6254 6255 int igb_xmit_xdp_ring(struct igb_adapter *adapter, 6256 struct igb_ring *tx_ring, 6257 struct xdp_frame *xdpf) 6258 { 6259 union e1000_adv_tx_desc *tx_desc; 6260 u32 len, cmd_type, olinfo_status; 6261 struct igb_tx_buffer *tx_buffer; 6262 dma_addr_t dma; 6263 u16 i; 6264 6265 len = xdpf->len; 6266 6267 if (unlikely(!igb_desc_unused(tx_ring))) 6268 return IGB_XDP_CONSUMED; 6269 6270 dma = dma_map_single(tx_ring->dev, xdpf->data, len, DMA_TO_DEVICE); 6271 if (dma_mapping_error(tx_ring->dev, dma)) 6272 return IGB_XDP_CONSUMED; 6273 6274 /* record the location of the first descriptor for this packet */ 6275 tx_buffer = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; 6276 tx_buffer->bytecount = len; 6277 tx_buffer->gso_segs = 1; 6278 tx_buffer->protocol = 0; 6279 6280 i = tx_ring->next_to_use; 6281 tx_desc = IGB_TX_DESC(tx_ring, i); 6282 6283 dma_unmap_len_set(tx_buffer, len, len); 6284 dma_unmap_addr_set(tx_buffer, dma, dma); 6285 tx_buffer->type = IGB_TYPE_XDP; 6286 tx_buffer->xdpf = xdpf; 6287 6288 tx_desc->read.buffer_addr = cpu_to_le64(dma); 6289 6290 /* put descriptor type bits */ 6291 cmd_type = E1000_ADVTXD_DTYP_DATA | 6292 E1000_ADVTXD_DCMD_DEXT | 6293 E1000_ADVTXD_DCMD_IFCS; 6294 cmd_type |= len | IGB_TXD_DCMD; 6295 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 6296 6297 olinfo_status = len << E1000_ADVTXD_PAYLEN_SHIFT; 6298 /* 82575 requires a unique index per ring */ 6299 if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) 6300 olinfo_status |= tx_ring->reg_idx << 4; 6301 6302 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); 6303 6304 netdev_tx_sent_queue(txring_txq(tx_ring), tx_buffer->bytecount); 6305 6306 /* set the timestamp */ 6307 tx_buffer->time_stamp = jiffies; 6308 6309 /* Avoid any potential race with xdp_xmit and cleanup */ 6310 smp_wmb(); 6311 6312 /* set next_to_watch value indicating a packet is present */ 6313 i++; 6314 if (i == tx_ring->count) 6315 i = 0; 6316 6317 tx_buffer->next_to_watch = tx_desc; 6318 tx_ring->next_to_use = i; 6319 6320 /* Make sure there is space in the ring for the next send. */ 6321 igb_maybe_stop_tx(tx_ring, DESC_NEEDED); 6322 6323 if (netif_xmit_stopped(txring_txq(tx_ring)) || !netdev_xmit_more()) 6324 writel(i, tx_ring->tail); 6325 6326 return IGB_XDP_TX; 6327 } 6328 6329 netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb, 6330 struct igb_ring *tx_ring) 6331 { 6332 struct igb_tx_buffer *first; 6333 int tso; 6334 u32 tx_flags = 0; 6335 unsigned short f; 6336 u16 count = TXD_USE_COUNT(skb_headlen(skb)); 6337 __be16 protocol = vlan_get_protocol(skb); 6338 u8 hdr_len = 0; 6339 6340 /* need: 1 descriptor per page * PAGE_SIZE/IGB_MAX_DATA_PER_TXD, 6341 * + 1 desc for skb_headlen/IGB_MAX_DATA_PER_TXD, 6342 * + 2 desc gap to keep tail from touching head, 6343 * + 1 desc for context descriptor, 6344 * otherwise try next time 6345 */ 6346 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) 6347 count += TXD_USE_COUNT(skb_frag_size( 6348 &skb_shinfo(skb)->frags[f])); 6349 6350 if (igb_maybe_stop_tx(tx_ring, count + 3)) { 6351 /* this is a hard error */ 6352 return NETDEV_TX_BUSY; 6353 } 6354 6355 /* record the location of the first descriptor for this packet */ 6356 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; 6357 first->type = IGB_TYPE_SKB; 6358 first->skb = skb; 6359 first->bytecount = skb->len; 6360 first->gso_segs = 1; 6361 6362 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { 6363 struct igb_adapter *adapter = netdev_priv(tx_ring->netdev); 6364 6365 if (adapter->tstamp_config.tx_type == HWTSTAMP_TX_ON && 6366 !test_and_set_bit_lock(__IGB_PTP_TX_IN_PROGRESS, 6367 &adapter->state)) { 6368 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 6369 tx_flags |= IGB_TX_FLAGS_TSTAMP; 6370 6371 adapter->ptp_tx_skb = skb_get(skb); 6372 adapter->ptp_tx_start = jiffies; 6373 if (adapter->hw.mac.type == e1000_82576) 6374 schedule_work(&adapter->ptp_tx_work); 6375 } else { 6376 adapter->tx_hwtstamp_skipped++; 6377 } 6378 } 6379 6380 if (skb_vlan_tag_present(skb)) { 6381 tx_flags |= IGB_TX_FLAGS_VLAN; 6382 tx_flags |= (skb_vlan_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); 6383 } 6384 6385 /* record initial flags and protocol */ 6386 first->tx_flags = tx_flags; 6387 first->protocol = protocol; 6388 6389 tso = igb_tso(tx_ring, first, &hdr_len); 6390 if (tso < 0) 6391 goto out_drop; 6392 else if (!tso) 6393 igb_tx_csum(tx_ring, first); 6394 6395 if (igb_tx_map(tx_ring, first, hdr_len)) 6396 goto cleanup_tx_tstamp; 6397 6398 return NETDEV_TX_OK; 6399 6400 out_drop: 6401 dev_kfree_skb_any(first->skb); 6402 first->skb = NULL; 6403 cleanup_tx_tstamp: 6404 if (unlikely(tx_flags & IGB_TX_FLAGS_TSTAMP)) { 6405 struct igb_adapter *adapter = netdev_priv(tx_ring->netdev); 6406 6407 dev_kfree_skb_any(adapter->ptp_tx_skb); 6408 adapter->ptp_tx_skb = NULL; 6409 if (adapter->hw.mac.type == e1000_82576) 6410 cancel_work_sync(&adapter->ptp_tx_work); 6411 clear_bit_unlock(__IGB_PTP_TX_IN_PROGRESS, &adapter->state); 6412 } 6413 6414 return NETDEV_TX_OK; 6415 } 6416 6417 static inline struct igb_ring *igb_tx_queue_mapping(struct igb_adapter *adapter, 6418 struct sk_buff *skb) 6419 { 6420 unsigned int r_idx = skb->queue_mapping; 6421 6422 if (r_idx >= adapter->num_tx_queues) 6423 r_idx = r_idx % adapter->num_tx_queues; 6424 6425 return adapter->tx_ring[r_idx]; 6426 } 6427 6428 static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, 6429 struct net_device *netdev) 6430 { 6431 struct igb_adapter *adapter = netdev_priv(netdev); 6432 6433 /* The minimum packet size with TCTL.PSP set is 17 so pad the skb 6434 * in order to meet this minimum size requirement. 6435 */ 6436 if (skb_put_padto(skb, 17)) 6437 return NETDEV_TX_OK; 6438 6439 return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb)); 6440 } 6441 6442 /** 6443 * igb_tx_timeout - Respond to a Tx Hang 6444 * @netdev: network interface device structure 6445 * @txqueue: number of the Tx queue that hung (unused) 6446 **/ 6447 static void igb_tx_timeout(struct net_device *netdev, unsigned int __always_unused txqueue) 6448 { 6449 struct igb_adapter *adapter = netdev_priv(netdev); 6450 struct e1000_hw *hw = &adapter->hw; 6451 6452 /* Do the reset outside of interrupt context */ 6453 adapter->tx_timeout_count++; 6454 6455 if (hw->mac.type >= e1000_82580) 6456 hw->dev_spec._82575.global_device_reset = true; 6457 6458 schedule_work(&adapter->reset_task); 6459 wr32(E1000_EICS, 6460 (adapter->eims_enable_mask & ~adapter->eims_other)); 6461 } 6462 6463 static void igb_reset_task(struct work_struct *work) 6464 { 6465 struct igb_adapter *adapter; 6466 adapter = container_of(work, struct igb_adapter, reset_task); 6467 6468 rtnl_lock(); 6469 /* If we're already down or resetting, just bail */ 6470 if (test_bit(__IGB_DOWN, &adapter->state) || 6471 test_bit(__IGB_RESETTING, &adapter->state)) { 6472 rtnl_unlock(); 6473 return; 6474 } 6475 6476 igb_dump(adapter); 6477 netdev_err(adapter->netdev, "Reset adapter\n"); 6478 igb_reinit_locked(adapter); 6479 rtnl_unlock(); 6480 } 6481 6482 /** 6483 * igb_get_stats64 - Get System Network Statistics 6484 * @netdev: network interface device structure 6485 * @stats: rtnl_link_stats64 pointer 6486 **/ 6487 static void igb_get_stats64(struct net_device *netdev, 6488 struct rtnl_link_stats64 *stats) 6489 { 6490 struct igb_adapter *adapter = netdev_priv(netdev); 6491 6492 spin_lock(&adapter->stats64_lock); 6493 igb_update_stats(adapter); 6494 memcpy(stats, &adapter->stats64, sizeof(*stats)); 6495 spin_unlock(&adapter->stats64_lock); 6496 } 6497 6498 /** 6499 * igb_change_mtu - Change the Maximum Transfer Unit 6500 * @netdev: network interface device structure 6501 * @new_mtu: new value for maximum frame size 6502 * 6503 * Returns 0 on success, negative on failure 6504 **/ 6505 static int igb_change_mtu(struct net_device *netdev, int new_mtu) 6506 { 6507 struct igb_adapter *adapter = netdev_priv(netdev); 6508 int max_frame = new_mtu + IGB_ETH_PKT_HDR_PAD; 6509 6510 if (adapter->xdp_prog) { 6511 int i; 6512 6513 for (i = 0; i < adapter->num_rx_queues; i++) { 6514 struct igb_ring *ring = adapter->rx_ring[i]; 6515 6516 if (max_frame > igb_rx_bufsz(ring)) { 6517 netdev_warn(adapter->netdev, 6518 "Requested MTU size is not supported with XDP. Max frame size is %d\n", 6519 max_frame); 6520 return -EINVAL; 6521 } 6522 } 6523 } 6524 6525 /* adjust max frame to be at least the size of a standard frame */ 6526 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) 6527 max_frame = ETH_FRAME_LEN + ETH_FCS_LEN; 6528 6529 while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) 6530 usleep_range(1000, 2000); 6531 6532 /* igb_down has a dependency on max_frame_size */ 6533 adapter->max_frame_size = max_frame; 6534 6535 if (netif_running(netdev)) 6536 igb_down(adapter); 6537 6538 netdev_dbg(netdev, "changing MTU from %d to %d\n", 6539 netdev->mtu, new_mtu); 6540 netdev->mtu = new_mtu; 6541 6542 if (netif_running(netdev)) 6543 igb_up(adapter); 6544 else 6545 igb_reset(adapter); 6546 6547 clear_bit(__IGB_RESETTING, &adapter->state); 6548 6549 return 0; 6550 } 6551 6552 /** 6553 * igb_update_stats - Update the board statistics counters 6554 * @adapter: board private structure 6555 **/ 6556 void igb_update_stats(struct igb_adapter *adapter) 6557 { 6558 struct rtnl_link_stats64 *net_stats = &adapter->stats64; 6559 struct e1000_hw *hw = &adapter->hw; 6560 struct pci_dev *pdev = adapter->pdev; 6561 u32 reg, mpc; 6562 int i; 6563 u64 bytes, packets; 6564 unsigned int start; 6565 u64 _bytes, _packets; 6566 6567 /* Prevent stats update while adapter is being reset, or if the pci 6568 * connection is down. 6569 */ 6570 if (adapter->link_speed == 0) 6571 return; 6572 if (pci_channel_offline(pdev)) 6573 return; 6574 6575 bytes = 0; 6576 packets = 0; 6577 6578 rcu_read_lock(); 6579 for (i = 0; i < adapter->num_rx_queues; i++) { 6580 struct igb_ring *ring = adapter->rx_ring[i]; 6581 u32 rqdpc = rd32(E1000_RQDPC(i)); 6582 if (hw->mac.type >= e1000_i210) 6583 wr32(E1000_RQDPC(i), 0); 6584 6585 if (rqdpc) { 6586 ring->rx_stats.drops += rqdpc; 6587 net_stats->rx_fifo_errors += rqdpc; 6588 } 6589 6590 do { 6591 start = u64_stats_fetch_begin_irq(&ring->rx_syncp); 6592 _bytes = ring->rx_stats.bytes; 6593 _packets = ring->rx_stats.packets; 6594 } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start)); 6595 bytes += _bytes; 6596 packets += _packets; 6597 } 6598 6599 net_stats->rx_bytes = bytes; 6600 net_stats->rx_packets = packets; 6601 6602 bytes = 0; 6603 packets = 0; 6604 for (i = 0; i < adapter->num_tx_queues; i++) { 6605 struct igb_ring *ring = adapter->tx_ring[i]; 6606 do { 6607 start = u64_stats_fetch_begin_irq(&ring->tx_syncp); 6608 _bytes = ring->tx_stats.bytes; 6609 _packets = ring->tx_stats.packets; 6610 } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start)); 6611 bytes += _bytes; 6612 packets += _packets; 6613 } 6614 net_stats->tx_bytes = bytes; 6615 net_stats->tx_packets = packets; 6616 rcu_read_unlock(); 6617 6618 /* read stats registers */ 6619 adapter->stats.crcerrs += rd32(E1000_CRCERRS); 6620 adapter->stats.gprc += rd32(E1000_GPRC); 6621 adapter->stats.gorc += rd32(E1000_GORCL); 6622 rd32(E1000_GORCH); /* clear GORCL */ 6623 adapter->stats.bprc += rd32(E1000_BPRC); 6624 adapter->stats.mprc += rd32(E1000_MPRC); 6625 adapter->stats.roc += rd32(E1000_ROC); 6626 6627 adapter->stats.prc64 += rd32(E1000_PRC64); 6628 adapter->stats.prc127 += rd32(E1000_PRC127); 6629 adapter->stats.prc255 += rd32(E1000_PRC255); 6630 adapter->stats.prc511 += rd32(E1000_PRC511); 6631 adapter->stats.prc1023 += rd32(E1000_PRC1023); 6632 adapter->stats.prc1522 += rd32(E1000_PRC1522); 6633 adapter->stats.symerrs += rd32(E1000_SYMERRS); 6634 adapter->stats.sec += rd32(E1000_SEC); 6635 6636 mpc = rd32(E1000_MPC); 6637 adapter->stats.mpc += mpc; 6638 net_stats->rx_fifo_errors += mpc; 6639 adapter->stats.scc += rd32(E1000_SCC); 6640 adapter->stats.ecol += rd32(E1000_ECOL); 6641 adapter->stats.mcc += rd32(E1000_MCC); 6642 adapter->stats.latecol += rd32(E1000_LATECOL); 6643 adapter->stats.dc += rd32(E1000_DC); 6644 adapter->stats.rlec += rd32(E1000_RLEC); 6645 adapter->stats.xonrxc += rd32(E1000_XONRXC); 6646 adapter->stats.xontxc += rd32(E1000_XONTXC); 6647 adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); 6648 adapter->stats.xofftxc += rd32(E1000_XOFFTXC); 6649 adapter->stats.fcruc += rd32(E1000_FCRUC); 6650 adapter->stats.gptc += rd32(E1000_GPTC); 6651 adapter->stats.gotc += rd32(E1000_GOTCL); 6652 rd32(E1000_GOTCH); /* clear GOTCL */ 6653 adapter->stats.rnbc += rd32(E1000_RNBC); 6654 adapter->stats.ruc += rd32(E1000_RUC); 6655 adapter->stats.rfc += rd32(E1000_RFC); 6656 adapter->stats.rjc += rd32(E1000_RJC); 6657 adapter->stats.tor += rd32(E1000_TORH); 6658 adapter->stats.tot += rd32(E1000_TOTH); 6659 adapter->stats.tpr += rd32(E1000_TPR); 6660 6661 adapter->stats.ptc64 += rd32(E1000_PTC64); 6662 adapter->stats.ptc127 += rd32(E1000_PTC127); 6663 adapter->stats.ptc255 += rd32(E1000_PTC255); 6664 adapter->stats.ptc511 += rd32(E1000_PTC511); 6665 adapter->stats.ptc1023 += rd32(E1000_PTC1023); 6666 adapter->stats.ptc1522 += rd32(E1000_PTC1522); 6667 6668 adapter->stats.mptc += rd32(E1000_MPTC); 6669 adapter->stats.bptc += rd32(E1000_BPTC); 6670 6671 adapter->stats.tpt += rd32(E1000_TPT); 6672 adapter->stats.colc += rd32(E1000_COLC); 6673 6674 adapter->stats.algnerrc += rd32(E1000_ALGNERRC); 6675 /* read internal phy specific stats */ 6676 reg = rd32(E1000_CTRL_EXT); 6677 if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) { 6678 adapter->stats.rxerrc += rd32(E1000_RXERRC); 6679 6680 /* this stat has invalid values on i210/i211 */ 6681 if ((hw->mac.type != e1000_i210) && 6682 (hw->mac.type != e1000_i211)) 6683 adapter->stats.tncrs += rd32(E1000_TNCRS); 6684 } 6685 6686 adapter->stats.tsctc += rd32(E1000_TSCTC); 6687 adapter->stats.tsctfc += rd32(E1000_TSCTFC); 6688 6689 adapter->stats.iac += rd32(E1000_IAC); 6690 adapter->stats.icrxoc += rd32(E1000_ICRXOC); 6691 adapter->stats.icrxptc += rd32(E1000_ICRXPTC); 6692 adapter->stats.icrxatc += rd32(E1000_ICRXATC); 6693 adapter->stats.ictxptc += rd32(E1000_ICTXPTC); 6694 adapter->stats.ictxatc += rd32(E1000_ICTXATC); 6695 adapter->stats.ictxqec += rd32(E1000_ICTXQEC); 6696 adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); 6697 adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); 6698 6699 /* Fill out the OS statistics structure */ 6700 net_stats->multicast = adapter->stats.mprc; 6701 net_stats->collisions = adapter->stats.colc; 6702 6703 /* Rx Errors */ 6704 6705 /* RLEC on some newer hardware can be incorrect so build 6706 * our own version based on RUC and ROC 6707 */ 6708 net_stats->rx_errors = adapter->stats.rxerrc + 6709 adapter->stats.crcerrs + adapter->stats.algnerrc + 6710 adapter->stats.ruc + adapter->stats.roc + 6711 adapter->stats.cexterr; 6712 net_stats->rx_length_errors = adapter->stats.ruc + 6713 adapter->stats.roc; 6714 net_stats->rx_crc_errors = adapter->stats.crcerrs; 6715 net_stats->rx_frame_errors = adapter->stats.algnerrc; 6716 net_stats->rx_missed_errors = adapter->stats.mpc; 6717 6718 /* Tx Errors */ 6719 net_stats->tx_errors = adapter->stats.ecol + 6720 adapter->stats.latecol; 6721 net_stats->tx_aborted_errors = adapter->stats.ecol; 6722 net_stats->tx_window_errors = adapter->stats.latecol; 6723 net_stats->tx_carrier_errors = adapter->stats.tncrs; 6724 6725 /* Tx Dropped needs to be maintained elsewhere */ 6726 6727 /* Management Stats */ 6728 adapter->stats.mgptc += rd32(E1000_MGTPTC); 6729 adapter->stats.mgprc += rd32(E1000_MGTPRC); 6730 adapter->stats.mgpdc += rd32(E1000_MGTPDC); 6731 6732 /* OS2BMC Stats */ 6733 reg = rd32(E1000_MANC); 6734 if (reg & E1000_MANC_EN_BMC2OS) { 6735 adapter->stats.o2bgptc += rd32(E1000_O2BGPTC); 6736 adapter->stats.o2bspc += rd32(E1000_O2BSPC); 6737 adapter->stats.b2ospc += rd32(E1000_B2OSPC); 6738 adapter->stats.b2ogprc += rd32(E1000_B2OGPRC); 6739 } 6740 } 6741 6742 static void igb_perout(struct igb_adapter *adapter, int tsintr_tt) 6743 { 6744 int pin = ptp_find_pin(adapter->ptp_clock, PTP_PF_PEROUT, tsintr_tt); 6745 struct e1000_hw *hw = &adapter->hw; 6746 struct timespec64 ts; 6747 u32 tsauxc; 6748 6749 if (pin < 0 || pin >= IGB_N_PEROUT) 6750 return; 6751 6752 spin_lock(&adapter->tmreg_lock); 6753 6754 if (hw->mac.type == e1000_82580 || 6755 hw->mac.type == e1000_i354 || 6756 hw->mac.type == e1000_i350) { 6757 s64 ns = timespec64_to_ns(&adapter->perout[pin].period); 6758 u32 systiml, systimh, level_mask, level, rem; 6759 u64 systim, now; 6760 6761 /* read systim registers in sequence */ 6762 rd32(E1000_SYSTIMR); 6763 systiml = rd32(E1000_SYSTIML); 6764 systimh = rd32(E1000_SYSTIMH); 6765 systim = (((u64)(systimh & 0xFF)) << 32) | ((u64)systiml); 6766 now = timecounter_cyc2time(&adapter->tc, systim); 6767 6768 if (pin < 2) { 6769 level_mask = (tsintr_tt == 1) ? 0x80000 : 0x40000; 6770 level = (rd32(E1000_CTRL) & level_mask) ? 1 : 0; 6771 } else { 6772 level_mask = (tsintr_tt == 1) ? 0x80 : 0x40; 6773 level = (rd32(E1000_CTRL_EXT) & level_mask) ? 1 : 0; 6774 } 6775 6776 div_u64_rem(now, ns, &rem); 6777 systim = systim + (ns - rem); 6778 6779 /* synchronize pin level with rising/falling edges */ 6780 div_u64_rem(now, ns << 1, &rem); 6781 if (rem < ns) { 6782 /* first half of period */ 6783 if (level == 0) { 6784 /* output is already low, skip this period */ 6785 systim += ns; 6786 pr_notice("igb: periodic output on %s missed falling edge\n", 6787 adapter->sdp_config[pin].name); 6788 } 6789 } else { 6790 /* second half of period */ 6791 if (level == 1) { 6792 /* output is already high, skip this period */ 6793 systim += ns; 6794 pr_notice("igb: periodic output on %s missed rising edge\n", 6795 adapter->sdp_config[pin].name); 6796 } 6797 } 6798 6799 /* for this chip family tv_sec is the upper part of the binary value, 6800 * so not seconds 6801 */ 6802 ts.tv_nsec = (u32)systim; 6803 ts.tv_sec = ((u32)(systim >> 32)) & 0xFF; 6804 } else { 6805 ts = timespec64_add(adapter->perout[pin].start, 6806 adapter->perout[pin].period); 6807 } 6808 6809 /* u32 conversion of tv_sec is safe until y2106 */ 6810 wr32((tsintr_tt == 1) ? E1000_TRGTTIML1 : E1000_TRGTTIML0, ts.tv_nsec); 6811 wr32((tsintr_tt == 1) ? E1000_TRGTTIMH1 : E1000_TRGTTIMH0, (u32)ts.tv_sec); 6812 tsauxc = rd32(E1000_TSAUXC); 6813 tsauxc |= TSAUXC_EN_TT0; 6814 wr32(E1000_TSAUXC, tsauxc); 6815 adapter->perout[pin].start = ts; 6816 6817 spin_unlock(&adapter->tmreg_lock); 6818 } 6819 6820 static void igb_extts(struct igb_adapter *adapter, int tsintr_tt) 6821 { 6822 int pin = ptp_find_pin(adapter->ptp_clock, PTP_PF_EXTTS, tsintr_tt); 6823 int auxstmpl = (tsintr_tt == 1) ? E1000_AUXSTMPL1 : E1000_AUXSTMPL0; 6824 int auxstmph = (tsintr_tt == 1) ? E1000_AUXSTMPH1 : E1000_AUXSTMPH0; 6825 struct e1000_hw *hw = &adapter->hw; 6826 struct ptp_clock_event event; 6827 struct timespec64 ts; 6828 6829 if (pin < 0 || pin >= IGB_N_EXTTS) 6830 return; 6831 6832 if (hw->mac.type == e1000_82580 || 6833 hw->mac.type == e1000_i354 || 6834 hw->mac.type == e1000_i350) { 6835 s64 ns = rd32(auxstmpl); 6836 6837 ns += ((s64)(rd32(auxstmph) & 0xFF)) << 32; 6838 ts = ns_to_timespec64(ns); 6839 } else { 6840 ts.tv_nsec = rd32(auxstmpl); 6841 ts.tv_sec = rd32(auxstmph); 6842 } 6843 6844 event.type = PTP_CLOCK_EXTTS; 6845 event.index = tsintr_tt; 6846 event.timestamp = ts.tv_sec * 1000000000ULL + ts.tv_nsec; 6847 ptp_clock_event(adapter->ptp_clock, &event); 6848 } 6849 6850 static void igb_tsync_interrupt(struct igb_adapter *adapter) 6851 { 6852 struct e1000_hw *hw = &adapter->hw; 6853 u32 ack = 0, tsicr = rd32(E1000_TSICR); 6854 struct ptp_clock_event event; 6855 6856 if (tsicr & TSINTR_SYS_WRAP) { 6857 event.type = PTP_CLOCK_PPS; 6858 if (adapter->ptp_caps.pps) 6859 ptp_clock_event(adapter->ptp_clock, &event); 6860 ack |= TSINTR_SYS_WRAP; 6861 } 6862 6863 if (tsicr & E1000_TSICR_TXTS) { 6864 /* retrieve hardware timestamp */ 6865 schedule_work(&adapter->ptp_tx_work); 6866 ack |= E1000_TSICR_TXTS; 6867 } 6868 6869 if (tsicr & TSINTR_TT0) { 6870 igb_perout(adapter, 0); 6871 ack |= TSINTR_TT0; 6872 } 6873 6874 if (tsicr & TSINTR_TT1) { 6875 igb_perout(adapter, 1); 6876 ack |= TSINTR_TT1; 6877 } 6878 6879 if (tsicr & TSINTR_AUTT0) { 6880 igb_extts(adapter, 0); 6881 ack |= TSINTR_AUTT0; 6882 } 6883 6884 if (tsicr & TSINTR_AUTT1) { 6885 igb_extts(adapter, 1); 6886 ack |= TSINTR_AUTT1; 6887 } 6888 6889 /* acknowledge the interrupts */ 6890 wr32(E1000_TSICR, ack); 6891 } 6892 6893 static irqreturn_t igb_msix_other(int irq, void *data) 6894 { 6895 struct igb_adapter *adapter = data; 6896 struct e1000_hw *hw = &adapter->hw; 6897 u32 icr = rd32(E1000_ICR); 6898 /* reading ICR causes bit 31 of EICR to be cleared */ 6899 6900 if (icr & E1000_ICR_DRSTA) 6901 schedule_work(&adapter->reset_task); 6902 6903 if (icr & E1000_ICR_DOUTSYNC) { 6904 /* HW is reporting DMA is out of sync */ 6905 adapter->stats.doosync++; 6906 /* The DMA Out of Sync is also indication of a spoof event 6907 * in IOV mode. Check the Wrong VM Behavior register to 6908 * see if it is really a spoof event. 6909 */ 6910 igb_check_wvbr(adapter); 6911 } 6912 6913 /* Check for a mailbox event */ 6914 if (icr & E1000_ICR_VMMB) 6915 igb_msg_task(adapter); 6916 6917 if (icr & E1000_ICR_LSC) { 6918 hw->mac.get_link_status = 1; 6919 /* guard against interrupt when we're going down */ 6920 if (!test_bit(__IGB_DOWN, &adapter->state)) 6921 mod_timer(&adapter->watchdog_timer, jiffies + 1); 6922 } 6923 6924 if (icr & E1000_ICR_TS) 6925 igb_tsync_interrupt(adapter); 6926 6927 wr32(E1000_EIMS, adapter->eims_other); 6928 6929 return IRQ_HANDLED; 6930 } 6931 6932 static void igb_write_itr(struct igb_q_vector *q_vector) 6933 { 6934 struct igb_adapter *adapter = q_vector->adapter; 6935 u32 itr_val = q_vector->itr_val & 0x7FFC; 6936 6937 if (!q_vector->set_itr) 6938 return; 6939 6940 if (!itr_val) 6941 itr_val = 0x4; 6942 6943 if (adapter->hw.mac.type == e1000_82575) 6944 itr_val |= itr_val << 16; 6945 else 6946 itr_val |= E1000_EITR_CNT_IGNR; 6947 6948 writel(itr_val, q_vector->itr_register); 6949 q_vector->set_itr = 0; 6950 } 6951 6952 static irqreturn_t igb_msix_ring(int irq, void *data) 6953 { 6954 struct igb_q_vector *q_vector = data; 6955 6956 /* Write the ITR value calculated from the previous interrupt. */ 6957 igb_write_itr(q_vector); 6958 6959 napi_schedule(&q_vector->napi); 6960 6961 return IRQ_HANDLED; 6962 } 6963 6964 #ifdef CONFIG_IGB_DCA 6965 static void igb_update_tx_dca(struct igb_adapter *adapter, 6966 struct igb_ring *tx_ring, 6967 int cpu) 6968 { 6969 struct e1000_hw *hw = &adapter->hw; 6970 u32 txctrl = dca3_get_tag(tx_ring->dev, cpu); 6971 6972 if (hw->mac.type != e1000_82575) 6973 txctrl <<= E1000_DCA_TXCTRL_CPUID_SHIFT; 6974 6975 /* We can enable relaxed ordering for reads, but not writes when 6976 * DCA is enabled. This is due to a known issue in some chipsets 6977 * which will cause the DCA tag to be cleared. 6978 */ 6979 txctrl |= E1000_DCA_TXCTRL_DESC_RRO_EN | 6980 E1000_DCA_TXCTRL_DATA_RRO_EN | 6981 E1000_DCA_TXCTRL_DESC_DCA_EN; 6982 6983 wr32(E1000_DCA_TXCTRL(tx_ring->reg_idx), txctrl); 6984 } 6985 6986 static void igb_update_rx_dca(struct igb_adapter *adapter, 6987 struct igb_ring *rx_ring, 6988 int cpu) 6989 { 6990 struct e1000_hw *hw = &adapter->hw; 6991 u32 rxctrl = dca3_get_tag(&adapter->pdev->dev, cpu); 6992 6993 if (hw->mac.type != e1000_82575) 6994 rxctrl <<= E1000_DCA_RXCTRL_CPUID_SHIFT; 6995 6996 /* We can enable relaxed ordering for reads, but not writes when 6997 * DCA is enabled. This is due to a known issue in some chipsets 6998 * which will cause the DCA tag to be cleared. 6999 */ 7000 rxctrl |= E1000_DCA_RXCTRL_DESC_RRO_EN | 7001 E1000_DCA_RXCTRL_DESC_DCA_EN; 7002 7003 wr32(E1000_DCA_RXCTRL(rx_ring->reg_idx), rxctrl); 7004 } 7005 7006 static void igb_update_dca(struct igb_q_vector *q_vector) 7007 { 7008 struct igb_adapter *adapter = q_vector->adapter; 7009 int cpu = get_cpu(); 7010 7011 if (q_vector->cpu == cpu) 7012 goto out_no_update; 7013 7014 if (q_vector->tx.ring) 7015 igb_update_tx_dca(adapter, q_vector->tx.ring, cpu); 7016 7017 if (q_vector->rx.ring) 7018 igb_update_rx_dca(adapter, q_vector->rx.ring, cpu); 7019 7020 q_vector->cpu = cpu; 7021 out_no_update: 7022 put_cpu(); 7023 } 7024 7025 static void igb_setup_dca(struct igb_adapter *adapter) 7026 { 7027 struct e1000_hw *hw = &adapter->hw; 7028 int i; 7029 7030 if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) 7031 return; 7032 7033 /* Always use CB2 mode, difference is masked in the CB driver. */ 7034 wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); 7035 7036 for (i = 0; i < adapter->num_q_vectors; i++) { 7037 adapter->q_vector[i]->cpu = -1; 7038 igb_update_dca(adapter->q_vector[i]); 7039 } 7040 } 7041 7042 static int __igb_notify_dca(struct device *dev, void *data) 7043 { 7044 struct net_device *netdev = dev_get_drvdata(dev); 7045 struct igb_adapter *adapter = netdev_priv(netdev); 7046 struct pci_dev *pdev = adapter->pdev; 7047 struct e1000_hw *hw = &adapter->hw; 7048 unsigned long event = *(unsigned long *)data; 7049 7050 switch (event) { 7051 case DCA_PROVIDER_ADD: 7052 /* if already enabled, don't do it again */ 7053 if (adapter->flags & IGB_FLAG_DCA_ENABLED) 7054 break; 7055 if (dca_add_requester(dev) == 0) { 7056 adapter->flags |= IGB_FLAG_DCA_ENABLED; 7057 dev_info(&pdev->dev, "DCA enabled\n"); 7058 igb_setup_dca(adapter); 7059 break; 7060 } 7061 fallthrough; /* since DCA is disabled. */ 7062 case DCA_PROVIDER_REMOVE: 7063 if (adapter->flags & IGB_FLAG_DCA_ENABLED) { 7064 /* without this a class_device is left 7065 * hanging around in the sysfs model 7066 */ 7067 dca_remove_requester(dev); 7068 dev_info(&pdev->dev, "DCA disabled\n"); 7069 adapter->flags &= ~IGB_FLAG_DCA_ENABLED; 7070 wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); 7071 } 7072 break; 7073 } 7074 7075 return 0; 7076 } 7077 7078 static int igb_notify_dca(struct notifier_block *nb, unsigned long event, 7079 void *p) 7080 { 7081 int ret_val; 7082 7083 ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, 7084 __igb_notify_dca); 7085 7086 return ret_val ? NOTIFY_BAD : NOTIFY_DONE; 7087 } 7088 #endif /* CONFIG_IGB_DCA */ 7089 7090 #ifdef CONFIG_PCI_IOV 7091 static int igb_vf_configure(struct igb_adapter *adapter, int vf) 7092 { 7093 unsigned char mac_addr[ETH_ALEN]; 7094 7095 eth_zero_addr(mac_addr); 7096 igb_set_vf_mac(adapter, vf, mac_addr); 7097 7098 /* By default spoof check is enabled for all VFs */ 7099 adapter->vf_data[vf].spoofchk_enabled = true; 7100 7101 /* By default VFs are not trusted */ 7102 adapter->vf_data[vf].trusted = false; 7103 7104 return 0; 7105 } 7106 7107 #endif 7108 static void igb_ping_all_vfs(struct igb_adapter *adapter) 7109 { 7110 struct e1000_hw *hw = &adapter->hw; 7111 u32 ping; 7112 int i; 7113 7114 for (i = 0 ; i < adapter->vfs_allocated_count; i++) { 7115 ping = E1000_PF_CONTROL_MSG; 7116 if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS) 7117 ping |= E1000_VT_MSGTYPE_CTS; 7118 igb_write_mbx(hw, &ping, 1, i); 7119 } 7120 } 7121 7122 static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) 7123 { 7124 struct e1000_hw *hw = &adapter->hw; 7125 u32 vmolr = rd32(E1000_VMOLR(vf)); 7126 struct vf_data_storage *vf_data = &adapter->vf_data[vf]; 7127 7128 vf_data->flags &= ~(IGB_VF_FLAG_UNI_PROMISC | 7129 IGB_VF_FLAG_MULTI_PROMISC); 7130 vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); 7131 7132 if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) { 7133 vmolr |= E1000_VMOLR_MPME; 7134 vf_data->flags |= IGB_VF_FLAG_MULTI_PROMISC; 7135 *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST; 7136 } else { 7137 /* if we have hashes and we are clearing a multicast promisc 7138 * flag we need to write the hashes to the MTA as this step 7139 * was previously skipped 7140 */ 7141 if (vf_data->num_vf_mc_hashes > 30) { 7142 vmolr |= E1000_VMOLR_MPME; 7143 } else if (vf_data->num_vf_mc_hashes) { 7144 int j; 7145 7146 vmolr |= E1000_VMOLR_ROMPE; 7147 for (j = 0; j < vf_data->num_vf_mc_hashes; j++) 7148 igb_mta_set(hw, vf_data->vf_mc_hashes[j]); 7149 } 7150 } 7151 7152 wr32(E1000_VMOLR(vf), vmolr); 7153 7154 /* there are flags left unprocessed, likely not supported */ 7155 if (*msgbuf & E1000_VT_MSGINFO_MASK) 7156 return -EINVAL; 7157 7158 return 0; 7159 } 7160 7161 static int igb_set_vf_multicasts(struct igb_adapter *adapter, 7162 u32 *msgbuf, u32 vf) 7163 { 7164 int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; 7165 u16 *hash_list = (u16 *)&msgbuf[1]; 7166 struct vf_data_storage *vf_data = &adapter->vf_data[vf]; 7167 int i; 7168 7169 /* salt away the number of multicast addresses assigned 7170 * to this VF for later use to restore when the PF multi cast 7171 * list changes 7172 */ 7173 vf_data->num_vf_mc_hashes = n; 7174 7175 /* only up to 30 hash values supported */ 7176 if (n > 30) 7177 n = 30; 7178 7179 /* store the hashes for later use */ 7180 for (i = 0; i < n; i++) 7181 vf_data->vf_mc_hashes[i] = hash_list[i]; 7182 7183 /* Flush and reset the mta with the new values */ 7184 igb_set_rx_mode(adapter->netdev); 7185 7186 return 0; 7187 } 7188 7189 static void igb_restore_vf_multicasts(struct igb_adapter *adapter) 7190 { 7191 struct e1000_hw *hw = &adapter->hw; 7192 struct vf_data_storage *vf_data; 7193 int i, j; 7194 7195 for (i = 0; i < adapter->vfs_allocated_count; i++) { 7196 u32 vmolr = rd32(E1000_VMOLR(i)); 7197 7198 vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); 7199 7200 vf_data = &adapter->vf_data[i]; 7201 7202 if ((vf_data->num_vf_mc_hashes > 30) || 7203 (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) { 7204 vmolr |= E1000_VMOLR_MPME; 7205 } else if (vf_data->num_vf_mc_hashes) { 7206 vmolr |= E1000_VMOLR_ROMPE; 7207 for (j = 0; j < vf_data->num_vf_mc_hashes; j++) 7208 igb_mta_set(hw, vf_data->vf_mc_hashes[j]); 7209 } 7210 wr32(E1000_VMOLR(i), vmolr); 7211 } 7212 } 7213 7214 static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) 7215 { 7216 struct e1000_hw *hw = &adapter->hw; 7217 u32 pool_mask, vlvf_mask, i; 7218 7219 /* create mask for VF and other pools */ 7220 pool_mask = E1000_VLVF_POOLSEL_MASK; 7221 vlvf_mask = BIT(E1000_VLVF_POOLSEL_SHIFT + vf); 7222 7223 /* drop PF from pool bits */ 7224 pool_mask &= ~BIT(E1000_VLVF_POOLSEL_SHIFT + 7225 adapter->vfs_allocated_count); 7226 7227 /* Find the vlan filter for this id */ 7228 for (i = E1000_VLVF_ARRAY_SIZE; i--;) { 7229 u32 vlvf = rd32(E1000_VLVF(i)); 7230 u32 vfta_mask, vid, vfta; 7231 7232 /* remove the vf from the pool */ 7233 if (!(vlvf & vlvf_mask)) 7234 continue; 7235 7236 /* clear out bit from VLVF */ 7237 vlvf ^= vlvf_mask; 7238 7239 /* if other pools are present, just remove ourselves */ 7240 if (vlvf & pool_mask) 7241 goto update_vlvfb; 7242 7243 /* if PF is present, leave VFTA */ 7244 if (vlvf & E1000_VLVF_POOLSEL_MASK) 7245 goto update_vlvf; 7246 7247 vid = vlvf & E1000_VLVF_VLANID_MASK; 7248 vfta_mask = BIT(vid % 32); 7249 7250 /* clear bit from VFTA */ 7251 vfta = adapter->shadow_vfta[vid / 32]; 7252 if (vfta & vfta_mask) 7253 hw->mac.ops.write_vfta(hw, vid / 32, vfta ^ vfta_mask); 7254 update_vlvf: 7255 /* clear pool selection enable */ 7256 if (adapter->flags & IGB_FLAG_VLAN_PROMISC) 7257 vlvf &= E1000_VLVF_POOLSEL_MASK; 7258 else 7259 vlvf = 0; 7260 update_vlvfb: 7261 /* clear pool bits */ 7262 wr32(E1000_VLVF(i), vlvf); 7263 } 7264 } 7265 7266 static int igb_find_vlvf_entry(struct e1000_hw *hw, u32 vlan) 7267 { 7268 u32 vlvf; 7269 int idx; 7270 7271 /* short cut the special case */ 7272 if (vlan == 0) 7273 return 0; 7274 7275 /* Search for the VLAN id in the VLVF entries */ 7276 for (idx = E1000_VLVF_ARRAY_SIZE; --idx;) { 7277 vlvf = rd32(E1000_VLVF(idx)); 7278 if ((vlvf & VLAN_VID_MASK) == vlan) 7279 break; 7280 } 7281 7282 return idx; 7283 } 7284 7285 static void igb_update_pf_vlvf(struct igb_adapter *adapter, u32 vid) 7286 { 7287 struct e1000_hw *hw = &adapter->hw; 7288 u32 bits, pf_id; 7289 int idx; 7290 7291 idx = igb_find_vlvf_entry(hw, vid); 7292 if (!idx) 7293 return; 7294 7295 /* See if any other pools are set for this VLAN filter 7296 * entry other than the PF. 7297 */ 7298 pf_id = adapter->vfs_allocated_count + E1000_VLVF_POOLSEL_SHIFT; 7299 bits = ~BIT(pf_id) & E1000_VLVF_POOLSEL_MASK; 7300 bits &= rd32(E1000_VLVF(idx)); 7301 7302 /* Disable the filter so this falls into the default pool. */ 7303 if (!bits) { 7304 if (adapter->flags & IGB_FLAG_VLAN_PROMISC) 7305 wr32(E1000_VLVF(idx), BIT(pf_id)); 7306 else 7307 wr32(E1000_VLVF(idx), 0); 7308 } 7309 } 7310 7311 static s32 igb_set_vf_vlan(struct igb_adapter *adapter, u32 vid, 7312 bool add, u32 vf) 7313 { 7314 int pf_id = adapter->vfs_allocated_count; 7315 struct e1000_hw *hw = &adapter->hw; 7316 int err; 7317 7318 /* If VLAN overlaps with one the PF is currently monitoring make 7319 * sure that we are able to allocate a VLVF entry. This may be 7320 * redundant but it guarantees PF will maintain visibility to 7321 * the VLAN. 7322 */ 7323 if (add && test_bit(vid, adapter->active_vlans)) { 7324 err = igb_vfta_set(hw, vid, pf_id, true, false); 7325 if (err) 7326 return err; 7327 } 7328 7329 err = igb_vfta_set(hw, vid, vf, add, false); 7330 7331 if (add && !err) 7332 return err; 7333 7334 /* If we failed to add the VF VLAN or we are removing the VF VLAN 7335 * we may need to drop the PF pool bit in order to allow us to free 7336 * up the VLVF resources. 7337 */ 7338 if (test_bit(vid, adapter->active_vlans) || 7339 (adapter->flags & IGB_FLAG_VLAN_PROMISC)) 7340 igb_update_pf_vlvf(adapter, vid); 7341 7342 return err; 7343 } 7344 7345 static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf) 7346 { 7347 struct e1000_hw *hw = &adapter->hw; 7348 7349 if (vid) 7350 wr32(E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT)); 7351 else 7352 wr32(E1000_VMVIR(vf), 0); 7353 } 7354 7355 static int igb_enable_port_vlan(struct igb_adapter *adapter, int vf, 7356 u16 vlan, u8 qos) 7357 { 7358 int err; 7359 7360 err = igb_set_vf_vlan(adapter, vlan, true, vf); 7361 if (err) 7362 return err; 7363 7364 igb_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); 7365 igb_set_vmolr(adapter, vf, !vlan); 7366 7367 /* revoke access to previous VLAN */ 7368 if (vlan != adapter->vf_data[vf].pf_vlan) 7369 igb_set_vf_vlan(adapter, adapter->vf_data[vf].pf_vlan, 7370 false, vf); 7371 7372 adapter->vf_data[vf].pf_vlan = vlan; 7373 adapter->vf_data[vf].pf_qos = qos; 7374 igb_set_vf_vlan_strip(adapter, vf, true); 7375 dev_info(&adapter->pdev->dev, 7376 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); 7377 if (test_bit(__IGB_DOWN, &adapter->state)) { 7378 dev_warn(&adapter->pdev->dev, 7379 "The VF VLAN has been set, but the PF device is not up.\n"); 7380 dev_warn(&adapter->pdev->dev, 7381 "Bring the PF device up before attempting to use the VF device.\n"); 7382 } 7383 7384 return err; 7385 } 7386 7387 static int igb_disable_port_vlan(struct igb_adapter *adapter, int vf) 7388 { 7389 /* Restore tagless access via VLAN 0 */ 7390 igb_set_vf_vlan(adapter, 0, true, vf); 7391 7392 igb_set_vmvir(adapter, 0, vf); 7393 igb_set_vmolr(adapter, vf, true); 7394 7395 /* Remove any PF assigned VLAN */ 7396 if (adapter->vf_data[vf].pf_vlan) 7397 igb_set_vf_vlan(adapter, adapter->vf_data[vf].pf_vlan, 7398 false, vf); 7399 7400 adapter->vf_data[vf].pf_vlan = 0; 7401 adapter->vf_data[vf].pf_qos = 0; 7402 igb_set_vf_vlan_strip(adapter, vf, false); 7403 7404 return 0; 7405 } 7406 7407 static int igb_ndo_set_vf_vlan(struct net_device *netdev, int vf, 7408 u16 vlan, u8 qos, __be16 vlan_proto) 7409 { 7410 struct igb_adapter *adapter = netdev_priv(netdev); 7411 7412 if ((vf >= adapter->vfs_allocated_count) || (vlan > 4095) || (qos > 7)) 7413 return -EINVAL; 7414 7415 if (vlan_proto != htons(ETH_P_8021Q)) 7416 return -EPROTONOSUPPORT; 7417 7418 return (vlan || qos) ? igb_enable_port_vlan(adapter, vf, vlan, qos) : 7419 igb_disable_port_vlan(adapter, vf); 7420 } 7421 7422 static int igb_set_vf_vlan_msg(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) 7423 { 7424 int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; 7425 int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); 7426 int ret; 7427 7428 if (adapter->vf_data[vf].pf_vlan) 7429 return -1; 7430 7431 /* VLAN 0 is a special case, don't allow it to be removed */ 7432 if (!vid && !add) 7433 return 0; 7434 7435 ret = igb_set_vf_vlan(adapter, vid, !!add, vf); 7436 if (!ret) 7437 igb_set_vf_vlan_strip(adapter, vf, !!vid); 7438 return ret; 7439 } 7440 7441 static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf) 7442 { 7443 struct vf_data_storage *vf_data = &adapter->vf_data[vf]; 7444 7445 /* clear flags - except flag that indicates PF has set the MAC */ 7446 vf_data->flags &= IGB_VF_FLAG_PF_SET_MAC; 7447 vf_data->last_nack = jiffies; 7448 7449 /* reset vlans for device */ 7450 igb_clear_vf_vfta(adapter, vf); 7451 igb_set_vf_vlan(adapter, vf_data->pf_vlan, true, vf); 7452 igb_set_vmvir(adapter, vf_data->pf_vlan | 7453 (vf_data->pf_qos << VLAN_PRIO_SHIFT), vf); 7454 igb_set_vmolr(adapter, vf, !vf_data->pf_vlan); 7455 igb_set_vf_vlan_strip(adapter, vf, !!(vf_data->pf_vlan)); 7456 7457 /* reset multicast table array for vf */ 7458 adapter->vf_data[vf].num_vf_mc_hashes = 0; 7459 7460 /* Flush and reset the mta with the new values */ 7461 igb_set_rx_mode(adapter->netdev); 7462 } 7463 7464 static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) 7465 { 7466 unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; 7467 7468 /* clear mac address as we were hotplug removed/added */ 7469 if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC)) 7470 eth_zero_addr(vf_mac); 7471 7472 /* process remaining reset events */ 7473 igb_vf_reset(adapter, vf); 7474 } 7475 7476 static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) 7477 { 7478 struct e1000_hw *hw = &adapter->hw; 7479 unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; 7480 u32 reg, msgbuf[3]; 7481 u8 *addr = (u8 *)(&msgbuf[1]); 7482 7483 /* process all the same items cleared in a function level reset */ 7484 igb_vf_reset(adapter, vf); 7485 7486 /* set vf mac address */ 7487 igb_set_vf_mac(adapter, vf, vf_mac); 7488 7489 /* enable transmit and receive for vf */ 7490 reg = rd32(E1000_VFTE); 7491 wr32(E1000_VFTE, reg | BIT(vf)); 7492 reg = rd32(E1000_VFRE); 7493 wr32(E1000_VFRE, reg | BIT(vf)); 7494 7495 adapter->vf_data[vf].flags |= IGB_VF_FLAG_CTS; 7496 7497 /* reply to reset with ack and vf mac address */ 7498 if (!is_zero_ether_addr(vf_mac)) { 7499 msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; 7500 memcpy(addr, vf_mac, ETH_ALEN); 7501 } else { 7502 msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_NACK; 7503 } 7504 igb_write_mbx(hw, msgbuf, 3, vf); 7505 } 7506 7507 static void igb_flush_mac_table(struct igb_adapter *adapter) 7508 { 7509 struct e1000_hw *hw = &adapter->hw; 7510 int i; 7511 7512 for (i = 0; i < hw->mac.rar_entry_count; i++) { 7513 adapter->mac_table[i].state &= ~IGB_MAC_STATE_IN_USE; 7514 eth_zero_addr(adapter->mac_table[i].addr); 7515 adapter->mac_table[i].queue = 0; 7516 igb_rar_set_index(adapter, i); 7517 } 7518 } 7519 7520 static int igb_available_rars(struct igb_adapter *adapter, u8 queue) 7521 { 7522 struct e1000_hw *hw = &adapter->hw; 7523 /* do not count rar entries reserved for VFs MAC addresses */ 7524 int rar_entries = hw->mac.rar_entry_count - 7525 adapter->vfs_allocated_count; 7526 int i, count = 0; 7527 7528 for (i = 0; i < rar_entries; i++) { 7529 /* do not count default entries */ 7530 if (adapter->mac_table[i].state & IGB_MAC_STATE_DEFAULT) 7531 continue; 7532 7533 /* do not count "in use" entries for different queues */ 7534 if ((adapter->mac_table[i].state & IGB_MAC_STATE_IN_USE) && 7535 (adapter->mac_table[i].queue != queue)) 7536 continue; 7537 7538 count++; 7539 } 7540 7541 return count; 7542 } 7543 7544 /* Set default MAC address for the PF in the first RAR entry */ 7545 static void igb_set_default_mac_filter(struct igb_adapter *adapter) 7546 { 7547 struct igb_mac_addr *mac_table = &adapter->mac_table[0]; 7548 7549 ether_addr_copy(mac_table->addr, adapter->hw.mac.addr); 7550 mac_table->queue = adapter->vfs_allocated_count; 7551 mac_table->state = IGB_MAC_STATE_DEFAULT | IGB_MAC_STATE_IN_USE; 7552 7553 igb_rar_set_index(adapter, 0); 7554 } 7555 7556 /* If the filter to be added and an already existing filter express 7557 * the same address and address type, it should be possible to only 7558 * override the other configurations, for example the queue to steer 7559 * traffic. 7560 */ 7561 static bool igb_mac_entry_can_be_used(const struct igb_mac_addr *entry, 7562 const u8 *addr, const u8 flags) 7563 { 7564 if (!(entry->state & IGB_MAC_STATE_IN_USE)) 7565 return true; 7566 7567 if ((entry->state & IGB_MAC_STATE_SRC_ADDR) != 7568 (flags & IGB_MAC_STATE_SRC_ADDR)) 7569 return false; 7570 7571 if (!ether_addr_equal(addr, entry->addr)) 7572 return false; 7573 7574 return true; 7575 } 7576 7577 /* Add a MAC filter for 'addr' directing matching traffic to 'queue', 7578 * 'flags' is used to indicate what kind of match is made, match is by 7579 * default for the destination address, if matching by source address 7580 * is desired the flag IGB_MAC_STATE_SRC_ADDR can be used. 7581 */ 7582 static int igb_add_mac_filter_flags(struct igb_adapter *adapter, 7583 const u8 *addr, const u8 queue, 7584 const u8 flags) 7585 { 7586 struct e1000_hw *hw = &adapter->hw; 7587 int rar_entries = hw->mac.rar_entry_count - 7588 adapter->vfs_allocated_count; 7589 int i; 7590 7591 if (is_zero_ether_addr(addr)) 7592 return -EINVAL; 7593 7594 /* Search for the first empty entry in the MAC table. 7595 * Do not touch entries at the end of the table reserved for the VF MAC 7596 * addresses. 7597 */ 7598 for (i = 0; i < rar_entries; i++) { 7599 if (!igb_mac_entry_can_be_used(&adapter->mac_table[i], 7600 addr, flags)) 7601 continue; 7602 7603 ether_addr_copy(adapter->mac_table[i].addr, addr); 7604 adapter->mac_table[i].queue = queue; 7605 adapter->mac_table[i].state |= IGB_MAC_STATE_IN_USE | flags; 7606 7607 igb_rar_set_index(adapter, i); 7608 return i; 7609 } 7610 7611 return -ENOSPC; 7612 } 7613 7614 static int igb_add_mac_filter(struct igb_adapter *adapter, const u8 *addr, 7615 const u8 queue) 7616 { 7617 return igb_add_mac_filter_flags(adapter, addr, queue, 0); 7618 } 7619 7620 /* Remove a MAC filter for 'addr' directing matching traffic to 7621 * 'queue', 'flags' is used to indicate what kind of match need to be 7622 * removed, match is by default for the destination address, if 7623 * matching by source address is to be removed the flag 7624 * IGB_MAC_STATE_SRC_ADDR can be used. 7625 */ 7626 static int igb_del_mac_filter_flags(struct igb_adapter *adapter, 7627 const u8 *addr, const u8 queue, 7628 const u8 flags) 7629 { 7630 struct e1000_hw *hw = &adapter->hw; 7631 int rar_entries = hw->mac.rar_entry_count - 7632 adapter->vfs_allocated_count; 7633 int i; 7634 7635 if (is_zero_ether_addr(addr)) 7636 return -EINVAL; 7637 7638 /* Search for matching entry in the MAC table based on given address 7639 * and queue. Do not touch entries at the end of the table reserved 7640 * for the VF MAC addresses. 7641 */ 7642 for (i = 0; i < rar_entries; i++) { 7643 if (!(adapter->mac_table[i].state & IGB_MAC_STATE_IN_USE)) 7644 continue; 7645 if ((adapter->mac_table[i].state & flags) != flags) 7646 continue; 7647 if (adapter->mac_table[i].queue != queue) 7648 continue; 7649 if (!ether_addr_equal(adapter->mac_table[i].addr, addr)) 7650 continue; 7651 7652 /* When a filter for the default address is "deleted", 7653 * we return it to its initial configuration 7654 */ 7655 if (adapter->mac_table[i].state & IGB_MAC_STATE_DEFAULT) { 7656 adapter->mac_table[i].state = 7657 IGB_MAC_STATE_DEFAULT | IGB_MAC_STATE_IN_USE; 7658 adapter->mac_table[i].queue = 7659 adapter->vfs_allocated_count; 7660 } else { 7661 adapter->mac_table[i].state = 0; 7662 adapter->mac_table[i].queue = 0; 7663 eth_zero_addr(adapter->mac_table[i].addr); 7664 } 7665 7666 igb_rar_set_index(adapter, i); 7667 return 0; 7668 } 7669 7670 return -ENOENT; 7671 } 7672 7673 static int igb_del_mac_filter(struct igb_adapter *adapter, const u8 *addr, 7674 const u8 queue) 7675 { 7676 return igb_del_mac_filter_flags(adapter, addr, queue, 0); 7677 } 7678 7679 int igb_add_mac_steering_filter(struct igb_adapter *adapter, 7680 const u8 *addr, u8 queue, u8 flags) 7681 { 7682 struct e1000_hw *hw = &adapter->hw; 7683 7684 /* In theory, this should be supported on 82575 as well, but 7685 * that part wasn't easily accessible during development. 7686 */ 7687 if (hw->mac.type != e1000_i210) 7688 return -EOPNOTSUPP; 7689 7690 return igb_add_mac_filter_flags(adapter, addr, queue, 7691 IGB_MAC_STATE_QUEUE_STEERING | flags); 7692 } 7693 7694 int igb_del_mac_steering_filter(struct igb_adapter *adapter, 7695 const u8 *addr, u8 queue, u8 flags) 7696 { 7697 return igb_del_mac_filter_flags(adapter, addr, queue, 7698 IGB_MAC_STATE_QUEUE_STEERING | flags); 7699 } 7700 7701 static int igb_uc_sync(struct net_device *netdev, const unsigned char *addr) 7702 { 7703 struct igb_adapter *adapter = netdev_priv(netdev); 7704 int ret; 7705 7706 ret = igb_add_mac_filter(adapter, addr, adapter->vfs_allocated_count); 7707 7708 return min_t(int, ret, 0); 7709 } 7710 7711 static int igb_uc_unsync(struct net_device *netdev, const unsigned char *addr) 7712 { 7713 struct igb_adapter *adapter = netdev_priv(netdev); 7714 7715 igb_del_mac_filter(adapter, addr, adapter->vfs_allocated_count); 7716 7717 return 0; 7718 } 7719 7720 static int igb_set_vf_mac_filter(struct igb_adapter *adapter, const int vf, 7721 const u32 info, const u8 *addr) 7722 { 7723 struct pci_dev *pdev = adapter->pdev; 7724 struct vf_data_storage *vf_data = &adapter->vf_data[vf]; 7725 struct list_head *pos; 7726 struct vf_mac_filter *entry = NULL; 7727 int ret = 0; 7728 7729 if ((vf_data->flags & IGB_VF_FLAG_PF_SET_MAC) && 7730 !vf_data->trusted) { 7731 dev_warn(&pdev->dev, 7732 "VF %d requested MAC filter but is administratively denied\n", 7733 vf); 7734 return -EINVAL; 7735 } 7736 if (!is_valid_ether_addr(addr)) { 7737 dev_warn(&pdev->dev, 7738 "VF %d attempted to set invalid MAC filter\n", 7739 vf); 7740 return -EINVAL; 7741 } 7742 7743 switch (info) { 7744 case E1000_VF_MAC_FILTER_CLR: 7745 /* remove all unicast MAC filters related to the current VF */ 7746 list_for_each(pos, &adapter->vf_macs.l) { 7747 entry = list_entry(pos, struct vf_mac_filter, l); 7748 if (entry->vf == vf) { 7749 entry->vf = -1; 7750 entry->free = true; 7751 igb_del_mac_filter(adapter, entry->vf_mac, vf); 7752 } 7753 } 7754 break; 7755 case E1000_VF_MAC_FILTER_ADD: 7756 /* try to find empty slot in the list */ 7757 list_for_each(pos, &adapter->vf_macs.l) { 7758 entry = list_entry(pos, struct vf_mac_filter, l); 7759 if (entry->free) 7760 break; 7761 } 7762 7763 if (entry && entry->free) { 7764 entry->free = false; 7765 entry->vf = vf; 7766 ether_addr_copy(entry->vf_mac, addr); 7767 7768 ret = igb_add_mac_filter(adapter, addr, vf); 7769 ret = min_t(int, ret, 0); 7770 } else { 7771 ret = -ENOSPC; 7772 } 7773 7774 if (ret == -ENOSPC) 7775 dev_warn(&pdev->dev, 7776 "VF %d has requested MAC filter but there is no space for it\n", 7777 vf); 7778 break; 7779 default: 7780 ret = -EINVAL; 7781 break; 7782 } 7783 7784 return ret; 7785 } 7786 7787 static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) 7788 { 7789 struct pci_dev *pdev = adapter->pdev; 7790 struct vf_data_storage *vf_data = &adapter->vf_data[vf]; 7791 u32 info = msg[0] & E1000_VT_MSGINFO_MASK; 7792 7793 /* The VF MAC Address is stored in a packed array of bytes 7794 * starting at the second 32 bit word of the msg array 7795 */ 7796 unsigned char *addr = (unsigned char *)&msg[1]; 7797 int ret = 0; 7798 7799 if (!info) { 7800 if ((vf_data->flags & IGB_VF_FLAG_PF_SET_MAC) && 7801 !vf_data->trusted) { 7802 dev_warn(&pdev->dev, 7803 "VF %d attempted to override administratively set MAC address\nReload the VF driver to resume operations\n", 7804 vf); 7805 return -EINVAL; 7806 } 7807 7808 if (!is_valid_ether_addr(addr)) { 7809 dev_warn(&pdev->dev, 7810 "VF %d attempted to set invalid MAC\n", 7811 vf); 7812 return -EINVAL; 7813 } 7814 7815 ret = igb_set_vf_mac(adapter, vf, addr); 7816 } else { 7817 ret = igb_set_vf_mac_filter(adapter, vf, info, addr); 7818 } 7819 7820 return ret; 7821 } 7822 7823 static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) 7824 { 7825 struct e1000_hw *hw = &adapter->hw; 7826 struct vf_data_storage *vf_data = &adapter->vf_data[vf]; 7827 u32 msg = E1000_VT_MSGTYPE_NACK; 7828 7829 /* if device isn't clear to send it shouldn't be reading either */ 7830 if (!(vf_data->flags & IGB_VF_FLAG_CTS) && 7831 time_after(jiffies, vf_data->last_nack + (2 * HZ))) { 7832 igb_write_mbx(hw, &msg, 1, vf); 7833 vf_data->last_nack = jiffies; 7834 } 7835 } 7836 7837 static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) 7838 { 7839 struct pci_dev *pdev = adapter->pdev; 7840 u32 msgbuf[E1000_VFMAILBOX_SIZE]; 7841 struct e1000_hw *hw = &adapter->hw; 7842 struct vf_data_storage *vf_data = &adapter->vf_data[vf]; 7843 s32 retval; 7844 7845 retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf, false); 7846 7847 if (retval) { 7848 /* if receive failed revoke VF CTS stats and restart init */ 7849 dev_err(&pdev->dev, "Error receiving message from VF\n"); 7850 vf_data->flags &= ~IGB_VF_FLAG_CTS; 7851 if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) 7852 goto unlock; 7853 goto out; 7854 } 7855 7856 /* this is a message we already processed, do nothing */ 7857 if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) 7858 goto unlock; 7859 7860 /* until the vf completes a reset it should not be 7861 * allowed to start any configuration. 7862 */ 7863 if (msgbuf[0] == E1000_VF_RESET) { 7864 /* unlocks mailbox */ 7865 igb_vf_reset_msg(adapter, vf); 7866 return; 7867 } 7868 7869 if (!(vf_data->flags & IGB_VF_FLAG_CTS)) { 7870 if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) 7871 goto unlock; 7872 retval = -1; 7873 goto out; 7874 } 7875 7876 switch ((msgbuf[0] & 0xFFFF)) { 7877 case E1000_VF_SET_MAC_ADDR: 7878 retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); 7879 break; 7880 case E1000_VF_SET_PROMISC: 7881 retval = igb_set_vf_promisc(adapter, msgbuf, vf); 7882 break; 7883 case E1000_VF_SET_MULTICAST: 7884 retval = igb_set_vf_multicasts(adapter, msgbuf, vf); 7885 break; 7886 case E1000_VF_SET_LPE: 7887 retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); 7888 break; 7889 case E1000_VF_SET_VLAN: 7890 retval = -1; 7891 if (vf_data->pf_vlan) 7892 dev_warn(&pdev->dev, 7893 "VF %d attempted to override administratively set VLAN tag\nReload the VF driver to resume operations\n", 7894 vf); 7895 else 7896 retval = igb_set_vf_vlan_msg(adapter, msgbuf, vf); 7897 break; 7898 default: 7899 dev_err(&pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); 7900 retval = -1; 7901 break; 7902 } 7903 7904 msgbuf[0] |= E1000_VT_MSGTYPE_CTS; 7905 out: 7906 /* notify the VF of the results of what it sent us */ 7907 if (retval) 7908 msgbuf[0] |= E1000_VT_MSGTYPE_NACK; 7909 else 7910 msgbuf[0] |= E1000_VT_MSGTYPE_ACK; 7911 7912 /* unlocks mailbox */ 7913 igb_write_mbx(hw, msgbuf, 1, vf); 7914 return; 7915 7916 unlock: 7917 igb_unlock_mbx(hw, vf); 7918 } 7919 7920 static void igb_msg_task(struct igb_adapter *adapter) 7921 { 7922 struct e1000_hw *hw = &adapter->hw; 7923 u32 vf; 7924 7925 for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { 7926 /* process any reset requests */ 7927 if (!igb_check_for_rst(hw, vf)) 7928 igb_vf_reset_event(adapter, vf); 7929 7930 /* process any messages pending */ 7931 if (!igb_check_for_msg(hw, vf)) 7932 igb_rcv_msg_from_vf(adapter, vf); 7933 7934 /* process any acks */ 7935 if (!igb_check_for_ack(hw, vf)) 7936 igb_rcv_ack_from_vf(adapter, vf); 7937 } 7938 } 7939 7940 /** 7941 * igb_set_uta - Set unicast filter table address 7942 * @adapter: board private structure 7943 * @set: boolean indicating if we are setting or clearing bits 7944 * 7945 * The unicast table address is a register array of 32-bit registers. 7946 * The table is meant to be used in a way similar to how the MTA is used 7947 * however due to certain limitations in the hardware it is necessary to 7948 * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous 7949 * enable bit to allow vlan tag stripping when promiscuous mode is enabled 7950 **/ 7951 static void igb_set_uta(struct igb_adapter *adapter, bool set) 7952 { 7953 struct e1000_hw *hw = &adapter->hw; 7954 u32 uta = set ? ~0 : 0; 7955 int i; 7956 7957 /* we only need to do this if VMDq is enabled */ 7958 if (!adapter->vfs_allocated_count) 7959 return; 7960 7961 for (i = hw->mac.uta_reg_count; i--;) 7962 array_wr32(E1000_UTA, i, uta); 7963 } 7964 7965 /** 7966 * igb_intr_msi - Interrupt Handler 7967 * @irq: interrupt number 7968 * @data: pointer to a network interface device structure 7969 **/ 7970 static irqreturn_t igb_intr_msi(int irq, void *data) 7971 { 7972 struct igb_adapter *adapter = data; 7973 struct igb_q_vector *q_vector = adapter->q_vector[0]; 7974 struct e1000_hw *hw = &adapter->hw; 7975 /* read ICR disables interrupts using IAM */ 7976 u32 icr = rd32(E1000_ICR); 7977 7978 igb_write_itr(q_vector); 7979 7980 if (icr & E1000_ICR_DRSTA) 7981 schedule_work(&adapter->reset_task); 7982 7983 if (icr & E1000_ICR_DOUTSYNC) { 7984 /* HW is reporting DMA is out of sync */ 7985 adapter->stats.doosync++; 7986 } 7987 7988 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 7989 hw->mac.get_link_status = 1; 7990 if (!test_bit(__IGB_DOWN, &adapter->state)) 7991 mod_timer(&adapter->watchdog_timer, jiffies + 1); 7992 } 7993 7994 if (icr & E1000_ICR_TS) 7995 igb_tsync_interrupt(adapter); 7996 7997 napi_schedule(&q_vector->napi); 7998 7999 return IRQ_HANDLED; 8000 } 8001 8002 /** 8003 * igb_intr - Legacy Interrupt Handler 8004 * @irq: interrupt number 8005 * @data: pointer to a network interface device structure 8006 **/ 8007 static irqreturn_t igb_intr(int irq, void *data) 8008 { 8009 struct igb_adapter *adapter = data; 8010 struct igb_q_vector *q_vector = adapter->q_vector[0]; 8011 struct e1000_hw *hw = &adapter->hw; 8012 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No 8013 * need for the IMC write 8014 */ 8015 u32 icr = rd32(E1000_ICR); 8016 8017 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is 8018 * not set, then the adapter didn't send an interrupt 8019 */ 8020 if (!(icr & E1000_ICR_INT_ASSERTED)) 8021 return IRQ_NONE; 8022 8023 igb_write_itr(q_vector); 8024 8025 if (icr & E1000_ICR_DRSTA) 8026 schedule_work(&adapter->reset_task); 8027 8028 if (icr & E1000_ICR_DOUTSYNC) { 8029 /* HW is reporting DMA is out of sync */ 8030 adapter->stats.doosync++; 8031 } 8032 8033 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 8034 hw->mac.get_link_status = 1; 8035 /* guard against interrupt when we're going down */ 8036 if (!test_bit(__IGB_DOWN, &adapter->state)) 8037 mod_timer(&adapter->watchdog_timer, jiffies + 1); 8038 } 8039 8040 if (icr & E1000_ICR_TS) 8041 igb_tsync_interrupt(adapter); 8042 8043 napi_schedule(&q_vector->napi); 8044 8045 return IRQ_HANDLED; 8046 } 8047 8048 static void igb_ring_irq_enable(struct igb_q_vector *q_vector) 8049 { 8050 struct igb_adapter *adapter = q_vector->adapter; 8051 struct e1000_hw *hw = &adapter->hw; 8052 8053 if ((q_vector->rx.ring && (adapter->rx_itr_setting & 3)) || 8054 (!q_vector->rx.ring && (adapter->tx_itr_setting & 3))) { 8055 if ((adapter->num_q_vectors == 1) && !adapter->vf_data) 8056 igb_set_itr(q_vector); 8057 else 8058 igb_update_ring_itr(q_vector); 8059 } 8060 8061 if (!test_bit(__IGB_DOWN, &adapter->state)) { 8062 if (adapter->flags & IGB_FLAG_HAS_MSIX) 8063 wr32(E1000_EIMS, q_vector->eims_value); 8064 else 8065 igb_irq_enable(adapter); 8066 } 8067 } 8068 8069 /** 8070 * igb_poll - NAPI Rx polling callback 8071 * @napi: napi polling structure 8072 * @budget: count of how many packets we should handle 8073 **/ 8074 static int igb_poll(struct napi_struct *napi, int budget) 8075 { 8076 struct igb_q_vector *q_vector = container_of(napi, 8077 struct igb_q_vector, 8078 napi); 8079 bool clean_complete = true; 8080 int work_done = 0; 8081 8082 #ifdef CONFIG_IGB_DCA 8083 if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED) 8084 igb_update_dca(q_vector); 8085 #endif 8086 if (q_vector->tx.ring) 8087 clean_complete = igb_clean_tx_irq(q_vector, budget); 8088 8089 if (q_vector->rx.ring) { 8090 int cleaned = igb_clean_rx_irq(q_vector, budget); 8091 8092 work_done += cleaned; 8093 if (cleaned >= budget) 8094 clean_complete = false; 8095 } 8096 8097 /* If all work not completed, return budget and keep polling */ 8098 if (!clean_complete) 8099 return budget; 8100 8101 /* Exit the polling mode, but don't re-enable interrupts if stack might 8102 * poll us due to busy-polling 8103 */ 8104 if (likely(napi_complete_done(napi, work_done))) 8105 igb_ring_irq_enable(q_vector); 8106 8107 return work_done; 8108 } 8109 8110 /** 8111 * igb_clean_tx_irq - Reclaim resources after transmit completes 8112 * @q_vector: pointer to q_vector containing needed info 8113 * @napi_budget: Used to determine if we are in netpoll 8114 * 8115 * returns true if ring is completely cleaned 8116 **/ 8117 static bool igb_clean_tx_irq(struct igb_q_vector *q_vector, int napi_budget) 8118 { 8119 struct igb_adapter *adapter = q_vector->adapter; 8120 struct igb_ring *tx_ring = q_vector->tx.ring; 8121 struct igb_tx_buffer *tx_buffer; 8122 union e1000_adv_tx_desc *tx_desc; 8123 unsigned int total_bytes = 0, total_packets = 0; 8124 unsigned int budget = q_vector->tx.work_limit; 8125 unsigned int i = tx_ring->next_to_clean; 8126 8127 if (test_bit(__IGB_DOWN, &adapter->state)) 8128 return true; 8129 8130 tx_buffer = &tx_ring->tx_buffer_info[i]; 8131 tx_desc = IGB_TX_DESC(tx_ring, i); 8132 i -= tx_ring->count; 8133 8134 do { 8135 union e1000_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; 8136 8137 /* if next_to_watch is not set then there is no work pending */ 8138 if (!eop_desc) 8139 break; 8140 8141 /* prevent any other reads prior to eop_desc */ 8142 smp_rmb(); 8143 8144 /* if DD is not set pending work has not been completed */ 8145 if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD))) 8146 break; 8147 8148 /* clear next_to_watch to prevent false hangs */ 8149 tx_buffer->next_to_watch = NULL; 8150 8151 /* update the statistics for this packet */ 8152 total_bytes += tx_buffer->bytecount; 8153 total_packets += tx_buffer->gso_segs; 8154 8155 /* free the skb */ 8156 if (tx_buffer->type == IGB_TYPE_SKB) 8157 napi_consume_skb(tx_buffer->skb, napi_budget); 8158 else 8159 xdp_return_frame(tx_buffer->xdpf); 8160 8161 /* unmap skb header data */ 8162 dma_unmap_single(tx_ring->dev, 8163 dma_unmap_addr(tx_buffer, dma), 8164 dma_unmap_len(tx_buffer, len), 8165 DMA_TO_DEVICE); 8166 8167 /* clear tx_buffer data */ 8168 dma_unmap_len_set(tx_buffer, len, 0); 8169 8170 /* clear last DMA location and unmap remaining buffers */ 8171 while (tx_desc != eop_desc) { 8172 tx_buffer++; 8173 tx_desc++; 8174 i++; 8175 if (unlikely(!i)) { 8176 i -= tx_ring->count; 8177 tx_buffer = tx_ring->tx_buffer_info; 8178 tx_desc = IGB_TX_DESC(tx_ring, 0); 8179 } 8180 8181 /* unmap any remaining paged data */ 8182 if (dma_unmap_len(tx_buffer, len)) { 8183 dma_unmap_page(tx_ring->dev, 8184 dma_unmap_addr(tx_buffer, dma), 8185 dma_unmap_len(tx_buffer, len), 8186 DMA_TO_DEVICE); 8187 dma_unmap_len_set(tx_buffer, len, 0); 8188 } 8189 } 8190 8191 /* move us one more past the eop_desc for start of next pkt */ 8192 tx_buffer++; 8193 tx_desc++; 8194 i++; 8195 if (unlikely(!i)) { 8196 i -= tx_ring->count; 8197 tx_buffer = tx_ring->tx_buffer_info; 8198 tx_desc = IGB_TX_DESC(tx_ring, 0); 8199 } 8200 8201 /* issue prefetch for next Tx descriptor */ 8202 prefetch(tx_desc); 8203 8204 /* update budget accounting */ 8205 budget--; 8206 } while (likely(budget)); 8207 8208 netdev_tx_completed_queue(txring_txq(tx_ring), 8209 total_packets, total_bytes); 8210 i += tx_ring->count; 8211 tx_ring->next_to_clean = i; 8212 u64_stats_update_begin(&tx_ring->tx_syncp); 8213 tx_ring->tx_stats.bytes += total_bytes; 8214 tx_ring->tx_stats.packets += total_packets; 8215 u64_stats_update_end(&tx_ring->tx_syncp); 8216 q_vector->tx.total_bytes += total_bytes; 8217 q_vector->tx.total_packets += total_packets; 8218 8219 if (test_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags)) { 8220 struct e1000_hw *hw = &adapter->hw; 8221 8222 /* Detect a transmit hang in hardware, this serializes the 8223 * check with the clearing of time_stamp and movement of i 8224 */ 8225 clear_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); 8226 if (tx_buffer->next_to_watch && 8227 time_after(jiffies, tx_buffer->time_stamp + 8228 (adapter->tx_timeout_factor * HZ)) && 8229 !(rd32(E1000_STATUS) & E1000_STATUS_TXOFF)) { 8230 8231 /* detected Tx unit hang */ 8232 dev_err(tx_ring->dev, 8233 "Detected Tx Unit Hang\n" 8234 " Tx Queue <%d>\n" 8235 " TDH <%x>\n" 8236 " TDT <%x>\n" 8237 " next_to_use <%x>\n" 8238 " next_to_clean <%x>\n" 8239 "buffer_info[next_to_clean]\n" 8240 " time_stamp <%lx>\n" 8241 " next_to_watch <%p>\n" 8242 " jiffies <%lx>\n" 8243 " desc.status <%x>\n", 8244 tx_ring->queue_index, 8245 rd32(E1000_TDH(tx_ring->reg_idx)), 8246 readl(tx_ring->tail), 8247 tx_ring->next_to_use, 8248 tx_ring->next_to_clean, 8249 tx_buffer->time_stamp, 8250 tx_buffer->next_to_watch, 8251 jiffies, 8252 tx_buffer->next_to_watch->wb.status); 8253 netif_stop_subqueue(tx_ring->netdev, 8254 tx_ring->queue_index); 8255 8256 /* we are about to reset, no point in enabling stuff */ 8257 return true; 8258 } 8259 } 8260 8261 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) 8262 if (unlikely(total_packets && 8263 netif_carrier_ok(tx_ring->netdev) && 8264 igb_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD)) { 8265 /* Make sure that anybody stopping the queue after this 8266 * sees the new next_to_clean. 8267 */ 8268 smp_mb(); 8269 if (__netif_subqueue_stopped(tx_ring->netdev, 8270 tx_ring->queue_index) && 8271 !(test_bit(__IGB_DOWN, &adapter->state))) { 8272 netif_wake_subqueue(tx_ring->netdev, 8273 tx_ring->queue_index); 8274 8275 u64_stats_update_begin(&tx_ring->tx_syncp); 8276 tx_ring->tx_stats.restart_queue++; 8277 u64_stats_update_end(&tx_ring->tx_syncp); 8278 } 8279 } 8280 8281 return !!budget; 8282 } 8283 8284 /** 8285 * igb_reuse_rx_page - page flip buffer and store it back on the ring 8286 * @rx_ring: rx descriptor ring to store buffers on 8287 * @old_buff: donor buffer to have page reused 8288 * 8289 * Synchronizes page for reuse by the adapter 8290 **/ 8291 static void igb_reuse_rx_page(struct igb_ring *rx_ring, 8292 struct igb_rx_buffer *old_buff) 8293 { 8294 struct igb_rx_buffer *new_buff; 8295 u16 nta = rx_ring->next_to_alloc; 8296 8297 new_buff = &rx_ring->rx_buffer_info[nta]; 8298 8299 /* update, and store next to alloc */ 8300 nta++; 8301 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; 8302 8303 /* Transfer page from old buffer to new buffer. 8304 * Move each member individually to avoid possible store 8305 * forwarding stalls. 8306 */ 8307 new_buff->dma = old_buff->dma; 8308 new_buff->page = old_buff->page; 8309 new_buff->page_offset = old_buff->page_offset; 8310 new_buff->pagecnt_bias = old_buff->pagecnt_bias; 8311 } 8312 8313 static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer, 8314 int rx_buf_pgcnt) 8315 { 8316 unsigned int pagecnt_bias = rx_buffer->pagecnt_bias; 8317 struct page *page = rx_buffer->page; 8318 8319 /* avoid re-using remote and pfmemalloc pages */ 8320 if (!dev_page_is_reusable(page)) 8321 return false; 8322 8323 #if (PAGE_SIZE < 8192) 8324 /* if we are only owner of page we can reuse it */ 8325 if (unlikely((rx_buf_pgcnt - pagecnt_bias) > 1)) 8326 return false; 8327 #else 8328 #define IGB_LAST_OFFSET \ 8329 (SKB_WITH_OVERHEAD(PAGE_SIZE) - IGB_RXBUFFER_2048) 8330 8331 if (rx_buffer->page_offset > IGB_LAST_OFFSET) 8332 return false; 8333 #endif 8334 8335 /* If we have drained the page fragment pool we need to update 8336 * the pagecnt_bias and page count so that we fully restock the 8337 * number of references the driver holds. 8338 */ 8339 if (unlikely(pagecnt_bias == 1)) { 8340 page_ref_add(page, USHRT_MAX - 1); 8341 rx_buffer->pagecnt_bias = USHRT_MAX; 8342 } 8343 8344 return true; 8345 } 8346 8347 /** 8348 * igb_add_rx_frag - Add contents of Rx buffer to sk_buff 8349 * @rx_ring: rx descriptor ring to transact packets on 8350 * @rx_buffer: buffer containing page to add 8351 * @skb: sk_buff to place the data into 8352 * @size: size of buffer to be added 8353 * 8354 * This function will add the data contained in rx_buffer->page to the skb. 8355 **/ 8356 static void igb_add_rx_frag(struct igb_ring *rx_ring, 8357 struct igb_rx_buffer *rx_buffer, 8358 struct sk_buff *skb, 8359 unsigned int size) 8360 { 8361 #if (PAGE_SIZE < 8192) 8362 unsigned int truesize = igb_rx_pg_size(rx_ring) / 2; 8363 #else 8364 unsigned int truesize = ring_uses_build_skb(rx_ring) ? 8365 SKB_DATA_ALIGN(IGB_SKB_PAD + size) : 8366 SKB_DATA_ALIGN(size); 8367 #endif 8368 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page, 8369 rx_buffer->page_offset, size, truesize); 8370 #if (PAGE_SIZE < 8192) 8371 rx_buffer->page_offset ^= truesize; 8372 #else 8373 rx_buffer->page_offset += truesize; 8374 #endif 8375 } 8376 8377 static struct sk_buff *igb_construct_skb(struct igb_ring *rx_ring, 8378 struct igb_rx_buffer *rx_buffer, 8379 struct xdp_buff *xdp, 8380 ktime_t timestamp) 8381 { 8382 #if (PAGE_SIZE < 8192) 8383 unsigned int truesize = igb_rx_pg_size(rx_ring) / 2; 8384 #else 8385 unsigned int truesize = SKB_DATA_ALIGN(xdp->data_end - 8386 xdp->data_hard_start); 8387 #endif 8388 unsigned int size = xdp->data_end - xdp->data; 8389 unsigned int headlen; 8390 struct sk_buff *skb; 8391 8392 /* prefetch first cache line of first page */ 8393 net_prefetch(xdp->data); 8394 8395 /* allocate a skb to store the frags */ 8396 skb = napi_alloc_skb(&rx_ring->q_vector->napi, IGB_RX_HDR_LEN); 8397 if (unlikely(!skb)) 8398 return NULL; 8399 8400 if (timestamp) 8401 skb_hwtstamps(skb)->hwtstamp = timestamp; 8402 8403 /* Determine available headroom for copy */ 8404 headlen = size; 8405 if (headlen > IGB_RX_HDR_LEN) 8406 headlen = eth_get_headlen(skb->dev, xdp->data, IGB_RX_HDR_LEN); 8407 8408 /* align pull length to size of long to optimize memcpy performance */ 8409 memcpy(__skb_put(skb, headlen), xdp->data, ALIGN(headlen, sizeof(long))); 8410 8411 /* update all of the pointers */ 8412 size -= headlen; 8413 if (size) { 8414 skb_add_rx_frag(skb, 0, rx_buffer->page, 8415 (xdp->data + headlen) - page_address(rx_buffer->page), 8416 size, truesize); 8417 #if (PAGE_SIZE < 8192) 8418 rx_buffer->page_offset ^= truesize; 8419 #else 8420 rx_buffer->page_offset += truesize; 8421 #endif 8422 } else { 8423 rx_buffer->pagecnt_bias++; 8424 } 8425 8426 return skb; 8427 } 8428 8429 static struct sk_buff *igb_build_skb(struct igb_ring *rx_ring, 8430 struct igb_rx_buffer *rx_buffer, 8431 struct xdp_buff *xdp, 8432 ktime_t timestamp) 8433 { 8434 #if (PAGE_SIZE < 8192) 8435 unsigned int truesize = igb_rx_pg_size(rx_ring) / 2; 8436 #else 8437 unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + 8438 SKB_DATA_ALIGN(xdp->data_end - 8439 xdp->data_hard_start); 8440 #endif 8441 unsigned int metasize = xdp->data - xdp->data_meta; 8442 struct sk_buff *skb; 8443 8444 /* prefetch first cache line of first page */ 8445 net_prefetch(xdp->data_meta); 8446 8447 /* build an skb around the page buffer */ 8448 skb = napi_build_skb(xdp->data_hard_start, truesize); 8449 if (unlikely(!skb)) 8450 return NULL; 8451 8452 /* update pointers within the skb to store the data */ 8453 skb_reserve(skb, xdp->data - xdp->data_hard_start); 8454 __skb_put(skb, xdp->data_end - xdp->data); 8455 8456 if (metasize) 8457 skb_metadata_set(skb, metasize); 8458 8459 if (timestamp) 8460 skb_hwtstamps(skb)->hwtstamp = timestamp; 8461 8462 /* update buffer offset */ 8463 #if (PAGE_SIZE < 8192) 8464 rx_buffer->page_offset ^= truesize; 8465 #else 8466 rx_buffer->page_offset += truesize; 8467 #endif 8468 8469 return skb; 8470 } 8471 8472 static struct sk_buff *igb_run_xdp(struct igb_adapter *adapter, 8473 struct igb_ring *rx_ring, 8474 struct xdp_buff *xdp) 8475 { 8476 int err, result = IGB_XDP_PASS; 8477 struct bpf_prog *xdp_prog; 8478 u32 act; 8479 8480 xdp_prog = READ_ONCE(rx_ring->xdp_prog); 8481 8482 if (!xdp_prog) 8483 goto xdp_out; 8484 8485 prefetchw(xdp->data_hard_start); /* xdp_frame write */ 8486 8487 act = bpf_prog_run_xdp(xdp_prog, xdp); 8488 switch (act) { 8489 case XDP_PASS: 8490 break; 8491 case XDP_TX: 8492 result = igb_xdp_xmit_back(adapter, xdp); 8493 if (result == IGB_XDP_CONSUMED) 8494 goto out_failure; 8495 break; 8496 case XDP_REDIRECT: 8497 err = xdp_do_redirect(adapter->netdev, xdp, xdp_prog); 8498 if (err) 8499 goto out_failure; 8500 result = IGB_XDP_REDIR; 8501 break; 8502 default: 8503 bpf_warn_invalid_xdp_action(adapter->netdev, xdp_prog, act); 8504 fallthrough; 8505 case XDP_ABORTED: 8506 out_failure: 8507 trace_xdp_exception(rx_ring->netdev, xdp_prog, act); 8508 fallthrough; 8509 case XDP_DROP: 8510 result = IGB_XDP_CONSUMED; 8511 break; 8512 } 8513 xdp_out: 8514 return ERR_PTR(-result); 8515 } 8516 8517 static unsigned int igb_rx_frame_truesize(struct igb_ring *rx_ring, 8518 unsigned int size) 8519 { 8520 unsigned int truesize; 8521 8522 #if (PAGE_SIZE < 8192) 8523 truesize = igb_rx_pg_size(rx_ring) / 2; /* Must be power-of-2 */ 8524 #else 8525 truesize = ring_uses_build_skb(rx_ring) ? 8526 SKB_DATA_ALIGN(IGB_SKB_PAD + size) + 8527 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) : 8528 SKB_DATA_ALIGN(size); 8529 #endif 8530 return truesize; 8531 } 8532 8533 static void igb_rx_buffer_flip(struct igb_ring *rx_ring, 8534 struct igb_rx_buffer *rx_buffer, 8535 unsigned int size) 8536 { 8537 unsigned int truesize = igb_rx_frame_truesize(rx_ring, size); 8538 #if (PAGE_SIZE < 8192) 8539 rx_buffer->page_offset ^= truesize; 8540 #else 8541 rx_buffer->page_offset += truesize; 8542 #endif 8543 } 8544 8545 static inline void igb_rx_checksum(struct igb_ring *ring, 8546 union e1000_adv_rx_desc *rx_desc, 8547 struct sk_buff *skb) 8548 { 8549 skb_checksum_none_assert(skb); 8550 8551 /* Ignore Checksum bit is set */ 8552 if (igb_test_staterr(rx_desc, E1000_RXD_STAT_IXSM)) 8553 return; 8554 8555 /* Rx checksum disabled via ethtool */ 8556 if (!(ring->netdev->features & NETIF_F_RXCSUM)) 8557 return; 8558 8559 /* TCP/UDP checksum error bit is set */ 8560 if (igb_test_staterr(rx_desc, 8561 E1000_RXDEXT_STATERR_TCPE | 8562 E1000_RXDEXT_STATERR_IPE)) { 8563 /* work around errata with sctp packets where the TCPE aka 8564 * L4E bit is set incorrectly on 64 byte (60 byte w/o crc) 8565 * packets, (aka let the stack check the crc32c) 8566 */ 8567 if (!((skb->len == 60) && 8568 test_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags))) { 8569 u64_stats_update_begin(&ring->rx_syncp); 8570 ring->rx_stats.csum_err++; 8571 u64_stats_update_end(&ring->rx_syncp); 8572 } 8573 /* let the stack verify checksum errors */ 8574 return; 8575 } 8576 /* It must be a TCP or UDP packet with a valid checksum */ 8577 if (igb_test_staterr(rx_desc, E1000_RXD_STAT_TCPCS | 8578 E1000_RXD_STAT_UDPCS)) 8579 skb->ip_summed = CHECKSUM_UNNECESSARY; 8580 8581 dev_dbg(ring->dev, "cksum success: bits %08X\n", 8582 le32_to_cpu(rx_desc->wb.upper.status_error)); 8583 } 8584 8585 static inline void igb_rx_hash(struct igb_ring *ring, 8586 union e1000_adv_rx_desc *rx_desc, 8587 struct sk_buff *skb) 8588 { 8589 if (ring->netdev->features & NETIF_F_RXHASH) 8590 skb_set_hash(skb, 8591 le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), 8592 PKT_HASH_TYPE_L3); 8593 } 8594 8595 /** 8596 * igb_is_non_eop - process handling of non-EOP buffers 8597 * @rx_ring: Rx ring being processed 8598 * @rx_desc: Rx descriptor for current buffer 8599 * 8600 * This function updates next to clean. If the buffer is an EOP buffer 8601 * this function exits returning false, otherwise it will place the 8602 * sk_buff in the next buffer to be chained and return true indicating 8603 * that this is in fact a non-EOP buffer. 8604 **/ 8605 static bool igb_is_non_eop(struct igb_ring *rx_ring, 8606 union e1000_adv_rx_desc *rx_desc) 8607 { 8608 u32 ntc = rx_ring->next_to_clean + 1; 8609 8610 /* fetch, update, and store next to clean */ 8611 ntc = (ntc < rx_ring->count) ? ntc : 0; 8612 rx_ring->next_to_clean = ntc; 8613 8614 prefetch(IGB_RX_DESC(rx_ring, ntc)); 8615 8616 if (likely(igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP))) 8617 return false; 8618 8619 return true; 8620 } 8621 8622 /** 8623 * igb_cleanup_headers - Correct corrupted or empty headers 8624 * @rx_ring: rx descriptor ring packet is being transacted on 8625 * @rx_desc: pointer to the EOP Rx descriptor 8626 * @skb: pointer to current skb being fixed 8627 * 8628 * Address the case where we are pulling data in on pages only 8629 * and as such no data is present in the skb header. 8630 * 8631 * In addition if skb is not at least 60 bytes we need to pad it so that 8632 * it is large enough to qualify as a valid Ethernet frame. 8633 * 8634 * Returns true if an error was encountered and skb was freed. 8635 **/ 8636 static bool igb_cleanup_headers(struct igb_ring *rx_ring, 8637 union e1000_adv_rx_desc *rx_desc, 8638 struct sk_buff *skb) 8639 { 8640 /* XDP packets use error pointer so abort at this point */ 8641 if (IS_ERR(skb)) 8642 return true; 8643 8644 if (unlikely((igb_test_staterr(rx_desc, 8645 E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) { 8646 struct net_device *netdev = rx_ring->netdev; 8647 if (!(netdev->features & NETIF_F_RXALL)) { 8648 dev_kfree_skb_any(skb); 8649 return true; 8650 } 8651 } 8652 8653 /* if eth_skb_pad returns an error the skb was freed */ 8654 if (eth_skb_pad(skb)) 8655 return true; 8656 8657 return false; 8658 } 8659 8660 /** 8661 * igb_process_skb_fields - Populate skb header fields from Rx descriptor 8662 * @rx_ring: rx descriptor ring packet is being transacted on 8663 * @rx_desc: pointer to the EOP Rx descriptor 8664 * @skb: pointer to current skb being populated 8665 * 8666 * This function checks the ring, descriptor, and packet information in 8667 * order to populate the hash, checksum, VLAN, timestamp, protocol, and 8668 * other fields within the skb. 8669 **/ 8670 static void igb_process_skb_fields(struct igb_ring *rx_ring, 8671 union e1000_adv_rx_desc *rx_desc, 8672 struct sk_buff *skb) 8673 { 8674 struct net_device *dev = rx_ring->netdev; 8675 8676 igb_rx_hash(rx_ring, rx_desc, skb); 8677 8678 igb_rx_checksum(rx_ring, rx_desc, skb); 8679 8680 if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TS) && 8681 !igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) 8682 igb_ptp_rx_rgtstamp(rx_ring->q_vector, skb); 8683 8684 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && 8685 igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) { 8686 u16 vid; 8687 8688 if (igb_test_staterr(rx_desc, E1000_RXDEXT_STATERR_LB) && 8689 test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &rx_ring->flags)) 8690 vid = be16_to_cpu((__force __be16)rx_desc->wb.upper.vlan); 8691 else 8692 vid = le16_to_cpu(rx_desc->wb.upper.vlan); 8693 8694 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); 8695 } 8696 8697 skb_record_rx_queue(skb, rx_ring->queue_index); 8698 8699 skb->protocol = eth_type_trans(skb, rx_ring->netdev); 8700 } 8701 8702 static unsigned int igb_rx_offset(struct igb_ring *rx_ring) 8703 { 8704 return ring_uses_build_skb(rx_ring) ? IGB_SKB_PAD : 0; 8705 } 8706 8707 static struct igb_rx_buffer *igb_get_rx_buffer(struct igb_ring *rx_ring, 8708 const unsigned int size, int *rx_buf_pgcnt) 8709 { 8710 struct igb_rx_buffer *rx_buffer; 8711 8712 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; 8713 *rx_buf_pgcnt = 8714 #if (PAGE_SIZE < 8192) 8715 page_count(rx_buffer->page); 8716 #else 8717 0; 8718 #endif 8719 prefetchw(rx_buffer->page); 8720 8721 /* we are reusing so sync this buffer for CPU use */ 8722 dma_sync_single_range_for_cpu(rx_ring->dev, 8723 rx_buffer->dma, 8724 rx_buffer->page_offset, 8725 size, 8726 DMA_FROM_DEVICE); 8727 8728 rx_buffer->pagecnt_bias--; 8729 8730 return rx_buffer; 8731 } 8732 8733 static void igb_put_rx_buffer(struct igb_ring *rx_ring, 8734 struct igb_rx_buffer *rx_buffer, int rx_buf_pgcnt) 8735 { 8736 if (igb_can_reuse_rx_page(rx_buffer, rx_buf_pgcnt)) { 8737 /* hand second half of page back to the ring */ 8738 igb_reuse_rx_page(rx_ring, rx_buffer); 8739 } else { 8740 /* We are not reusing the buffer so unmap it and free 8741 * any references we are holding to it 8742 */ 8743 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 8744 igb_rx_pg_size(rx_ring), DMA_FROM_DEVICE, 8745 IGB_RX_DMA_ATTR); 8746 __page_frag_cache_drain(rx_buffer->page, 8747 rx_buffer->pagecnt_bias); 8748 } 8749 8750 /* clear contents of rx_buffer */ 8751 rx_buffer->page = NULL; 8752 } 8753 8754 static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) 8755 { 8756 struct igb_adapter *adapter = q_vector->adapter; 8757 struct igb_ring *rx_ring = q_vector->rx.ring; 8758 struct sk_buff *skb = rx_ring->skb; 8759 unsigned int total_bytes = 0, total_packets = 0; 8760 u16 cleaned_count = igb_desc_unused(rx_ring); 8761 unsigned int xdp_xmit = 0; 8762 struct xdp_buff xdp; 8763 u32 frame_sz = 0; 8764 int rx_buf_pgcnt; 8765 8766 /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */ 8767 #if (PAGE_SIZE < 8192) 8768 frame_sz = igb_rx_frame_truesize(rx_ring, 0); 8769 #endif 8770 xdp_init_buff(&xdp, frame_sz, &rx_ring->xdp_rxq); 8771 8772 while (likely(total_packets < budget)) { 8773 union e1000_adv_rx_desc *rx_desc; 8774 struct igb_rx_buffer *rx_buffer; 8775 ktime_t timestamp = 0; 8776 int pkt_offset = 0; 8777 unsigned int size; 8778 void *pktbuf; 8779 8780 /* return some buffers to hardware, one at a time is too slow */ 8781 if (cleaned_count >= IGB_RX_BUFFER_WRITE) { 8782 igb_alloc_rx_buffers(rx_ring, cleaned_count); 8783 cleaned_count = 0; 8784 } 8785 8786 rx_desc = IGB_RX_DESC(rx_ring, rx_ring->next_to_clean); 8787 size = le16_to_cpu(rx_desc->wb.upper.length); 8788 if (!size) 8789 break; 8790 8791 /* This memory barrier is needed to keep us from reading 8792 * any other fields out of the rx_desc until we know the 8793 * descriptor has been written back 8794 */ 8795 dma_rmb(); 8796 8797 rx_buffer = igb_get_rx_buffer(rx_ring, size, &rx_buf_pgcnt); 8798 pktbuf = page_address(rx_buffer->page) + rx_buffer->page_offset; 8799 8800 /* pull rx packet timestamp if available and valid */ 8801 if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) { 8802 int ts_hdr_len; 8803 8804 ts_hdr_len = igb_ptp_rx_pktstamp(rx_ring->q_vector, 8805 pktbuf, ×tamp); 8806 8807 pkt_offset += ts_hdr_len; 8808 size -= ts_hdr_len; 8809 } 8810 8811 /* retrieve a buffer from the ring */ 8812 if (!skb) { 8813 unsigned char *hard_start = pktbuf - igb_rx_offset(rx_ring); 8814 unsigned int offset = pkt_offset + igb_rx_offset(rx_ring); 8815 8816 xdp_prepare_buff(&xdp, hard_start, offset, size, true); 8817 #if (PAGE_SIZE > 4096) 8818 /* At larger PAGE_SIZE, frame_sz depend on len size */ 8819 xdp.frame_sz = igb_rx_frame_truesize(rx_ring, size); 8820 #endif 8821 skb = igb_run_xdp(adapter, rx_ring, &xdp); 8822 } 8823 8824 if (IS_ERR(skb)) { 8825 unsigned int xdp_res = -PTR_ERR(skb); 8826 8827 if (xdp_res & (IGB_XDP_TX | IGB_XDP_REDIR)) { 8828 xdp_xmit |= xdp_res; 8829 igb_rx_buffer_flip(rx_ring, rx_buffer, size); 8830 } else { 8831 rx_buffer->pagecnt_bias++; 8832 } 8833 total_packets++; 8834 total_bytes += size; 8835 } else if (skb) 8836 igb_add_rx_frag(rx_ring, rx_buffer, skb, size); 8837 else if (ring_uses_build_skb(rx_ring)) 8838 skb = igb_build_skb(rx_ring, rx_buffer, &xdp, 8839 timestamp); 8840 else 8841 skb = igb_construct_skb(rx_ring, rx_buffer, 8842 &xdp, timestamp); 8843 8844 /* exit if we failed to retrieve a buffer */ 8845 if (!skb) { 8846 rx_ring->rx_stats.alloc_failed++; 8847 rx_buffer->pagecnt_bias++; 8848 break; 8849 } 8850 8851 igb_put_rx_buffer(rx_ring, rx_buffer, rx_buf_pgcnt); 8852 cleaned_count++; 8853 8854 /* fetch next buffer in frame if non-eop */ 8855 if (igb_is_non_eop(rx_ring, rx_desc)) 8856 continue; 8857 8858 /* verify the packet layout is correct */ 8859 if (igb_cleanup_headers(rx_ring, rx_desc, skb)) { 8860 skb = NULL; 8861 continue; 8862 } 8863 8864 /* probably a little skewed due to removing CRC */ 8865 total_bytes += skb->len; 8866 8867 /* populate checksum, timestamp, VLAN, and protocol */ 8868 igb_process_skb_fields(rx_ring, rx_desc, skb); 8869 8870 napi_gro_receive(&q_vector->napi, skb); 8871 8872 /* reset skb pointer */ 8873 skb = NULL; 8874 8875 /* update budget accounting */ 8876 total_packets++; 8877 } 8878 8879 /* place incomplete frames back on ring for completion */ 8880 rx_ring->skb = skb; 8881 8882 if (xdp_xmit & IGB_XDP_REDIR) 8883 xdp_do_flush(); 8884 8885 if (xdp_xmit & IGB_XDP_TX) { 8886 struct igb_ring *tx_ring = igb_xdp_tx_queue_mapping(adapter); 8887 8888 igb_xdp_ring_update_tail(tx_ring); 8889 } 8890 8891 u64_stats_update_begin(&rx_ring->rx_syncp); 8892 rx_ring->rx_stats.packets += total_packets; 8893 rx_ring->rx_stats.bytes += total_bytes; 8894 u64_stats_update_end(&rx_ring->rx_syncp); 8895 q_vector->rx.total_packets += total_packets; 8896 q_vector->rx.total_bytes += total_bytes; 8897 8898 if (cleaned_count) 8899 igb_alloc_rx_buffers(rx_ring, cleaned_count); 8900 8901 return total_packets; 8902 } 8903 8904 static bool igb_alloc_mapped_page(struct igb_ring *rx_ring, 8905 struct igb_rx_buffer *bi) 8906 { 8907 struct page *page = bi->page; 8908 dma_addr_t dma; 8909 8910 /* since we are recycling buffers we should seldom need to alloc */ 8911 if (likely(page)) 8912 return true; 8913 8914 /* alloc new page for storage */ 8915 page = dev_alloc_pages(igb_rx_pg_order(rx_ring)); 8916 if (unlikely(!page)) { 8917 rx_ring->rx_stats.alloc_failed++; 8918 return false; 8919 } 8920 8921 /* map page for use */ 8922 dma = dma_map_page_attrs(rx_ring->dev, page, 0, 8923 igb_rx_pg_size(rx_ring), 8924 DMA_FROM_DEVICE, 8925 IGB_RX_DMA_ATTR); 8926 8927 /* if mapping failed free memory back to system since 8928 * there isn't much point in holding memory we can't use 8929 */ 8930 if (dma_mapping_error(rx_ring->dev, dma)) { 8931 __free_pages(page, igb_rx_pg_order(rx_ring)); 8932 8933 rx_ring->rx_stats.alloc_failed++; 8934 return false; 8935 } 8936 8937 bi->dma = dma; 8938 bi->page = page; 8939 bi->page_offset = igb_rx_offset(rx_ring); 8940 page_ref_add(page, USHRT_MAX - 1); 8941 bi->pagecnt_bias = USHRT_MAX; 8942 8943 return true; 8944 } 8945 8946 /** 8947 * igb_alloc_rx_buffers - Replace used receive buffers 8948 * @rx_ring: rx descriptor ring to allocate new receive buffers 8949 * @cleaned_count: count of buffers to allocate 8950 **/ 8951 void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count) 8952 { 8953 union e1000_adv_rx_desc *rx_desc; 8954 struct igb_rx_buffer *bi; 8955 u16 i = rx_ring->next_to_use; 8956 u16 bufsz; 8957 8958 /* nothing to do */ 8959 if (!cleaned_count) 8960 return; 8961 8962 rx_desc = IGB_RX_DESC(rx_ring, i); 8963 bi = &rx_ring->rx_buffer_info[i]; 8964 i -= rx_ring->count; 8965 8966 bufsz = igb_rx_bufsz(rx_ring); 8967 8968 do { 8969 if (!igb_alloc_mapped_page(rx_ring, bi)) 8970 break; 8971 8972 /* sync the buffer for use by the device */ 8973 dma_sync_single_range_for_device(rx_ring->dev, bi->dma, 8974 bi->page_offset, bufsz, 8975 DMA_FROM_DEVICE); 8976 8977 /* Refresh the desc even if buffer_addrs didn't change 8978 * because each write-back erases this info. 8979 */ 8980 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); 8981 8982 rx_desc++; 8983 bi++; 8984 i++; 8985 if (unlikely(!i)) { 8986 rx_desc = IGB_RX_DESC(rx_ring, 0); 8987 bi = rx_ring->rx_buffer_info; 8988 i -= rx_ring->count; 8989 } 8990 8991 /* clear the length for the next_to_use descriptor */ 8992 rx_desc->wb.upper.length = 0; 8993 8994 cleaned_count--; 8995 } while (cleaned_count); 8996 8997 i += rx_ring->count; 8998 8999 if (rx_ring->next_to_use != i) { 9000 /* record the next descriptor to use */ 9001 rx_ring->next_to_use = i; 9002 9003 /* update next to alloc since we have filled the ring */ 9004 rx_ring->next_to_alloc = i; 9005 9006 /* Force memory writes to complete before letting h/w 9007 * know there are new descriptors to fetch. (Only 9008 * applicable for weak-ordered memory model archs, 9009 * such as IA-64). 9010 */ 9011 dma_wmb(); 9012 writel(i, rx_ring->tail); 9013 } 9014 } 9015 9016 /** 9017 * igb_mii_ioctl - 9018 * @netdev: pointer to netdev struct 9019 * @ifr: interface structure 9020 * @cmd: ioctl command to execute 9021 **/ 9022 static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 9023 { 9024 struct igb_adapter *adapter = netdev_priv(netdev); 9025 struct mii_ioctl_data *data = if_mii(ifr); 9026 9027 if (adapter->hw.phy.media_type != e1000_media_type_copper) 9028 return -EOPNOTSUPP; 9029 9030 switch (cmd) { 9031 case SIOCGMIIPHY: 9032 data->phy_id = adapter->hw.phy.addr; 9033 break; 9034 case SIOCGMIIREG: 9035 if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, 9036 &data->val_out)) 9037 return -EIO; 9038 break; 9039 case SIOCSMIIREG: 9040 default: 9041 return -EOPNOTSUPP; 9042 } 9043 return 0; 9044 } 9045 9046 /** 9047 * igb_ioctl - 9048 * @netdev: pointer to netdev struct 9049 * @ifr: interface structure 9050 * @cmd: ioctl command to execute 9051 **/ 9052 static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 9053 { 9054 switch (cmd) { 9055 case SIOCGMIIPHY: 9056 case SIOCGMIIREG: 9057 case SIOCSMIIREG: 9058 return igb_mii_ioctl(netdev, ifr, cmd); 9059 case SIOCGHWTSTAMP: 9060 return igb_ptp_get_ts_config(netdev, ifr); 9061 case SIOCSHWTSTAMP: 9062 return igb_ptp_set_ts_config(netdev, ifr); 9063 default: 9064 return -EOPNOTSUPP; 9065 } 9066 } 9067 9068 void igb_read_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value) 9069 { 9070 struct igb_adapter *adapter = hw->back; 9071 9072 pci_read_config_word(adapter->pdev, reg, value); 9073 } 9074 9075 void igb_write_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value) 9076 { 9077 struct igb_adapter *adapter = hw->back; 9078 9079 pci_write_config_word(adapter->pdev, reg, *value); 9080 } 9081 9082 s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) 9083 { 9084 struct igb_adapter *adapter = hw->back; 9085 9086 if (pcie_capability_read_word(adapter->pdev, reg, value)) 9087 return -E1000_ERR_CONFIG; 9088 9089 return 0; 9090 } 9091 9092 s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) 9093 { 9094 struct igb_adapter *adapter = hw->back; 9095 9096 if (pcie_capability_write_word(adapter->pdev, reg, *value)) 9097 return -E1000_ERR_CONFIG; 9098 9099 return 0; 9100 } 9101 9102 static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features) 9103 { 9104 struct igb_adapter *adapter = netdev_priv(netdev); 9105 struct e1000_hw *hw = &adapter->hw; 9106 u32 ctrl, rctl; 9107 bool enable = !!(features & NETIF_F_HW_VLAN_CTAG_RX); 9108 9109 if (enable) { 9110 /* enable VLAN tag insert/strip */ 9111 ctrl = rd32(E1000_CTRL); 9112 ctrl |= E1000_CTRL_VME; 9113 wr32(E1000_CTRL, ctrl); 9114 9115 /* Disable CFI check */ 9116 rctl = rd32(E1000_RCTL); 9117 rctl &= ~E1000_RCTL_CFIEN; 9118 wr32(E1000_RCTL, rctl); 9119 } else { 9120 /* disable VLAN tag insert/strip */ 9121 ctrl = rd32(E1000_CTRL); 9122 ctrl &= ~E1000_CTRL_VME; 9123 wr32(E1000_CTRL, ctrl); 9124 } 9125 9126 igb_set_vf_vlan_strip(adapter, adapter->vfs_allocated_count, enable); 9127 } 9128 9129 static int igb_vlan_rx_add_vid(struct net_device *netdev, 9130 __be16 proto, u16 vid) 9131 { 9132 struct igb_adapter *adapter = netdev_priv(netdev); 9133 struct e1000_hw *hw = &adapter->hw; 9134 int pf_id = adapter->vfs_allocated_count; 9135 9136 /* add the filter since PF can receive vlans w/o entry in vlvf */ 9137 if (!vid || !(adapter->flags & IGB_FLAG_VLAN_PROMISC)) 9138 igb_vfta_set(hw, vid, pf_id, true, !!vid); 9139 9140 set_bit(vid, adapter->active_vlans); 9141 9142 return 0; 9143 } 9144 9145 static int igb_vlan_rx_kill_vid(struct net_device *netdev, 9146 __be16 proto, u16 vid) 9147 { 9148 struct igb_adapter *adapter = netdev_priv(netdev); 9149 int pf_id = adapter->vfs_allocated_count; 9150 struct e1000_hw *hw = &adapter->hw; 9151 9152 /* remove VID from filter table */ 9153 if (vid && !(adapter->flags & IGB_FLAG_VLAN_PROMISC)) 9154 igb_vfta_set(hw, vid, pf_id, false, true); 9155 9156 clear_bit(vid, adapter->active_vlans); 9157 9158 return 0; 9159 } 9160 9161 static void igb_restore_vlan(struct igb_adapter *adapter) 9162 { 9163 u16 vid = 1; 9164 9165 igb_vlan_mode(adapter->netdev, adapter->netdev->features); 9166 igb_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); 9167 9168 for_each_set_bit_from(vid, adapter->active_vlans, VLAN_N_VID) 9169 igb_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); 9170 } 9171 9172 int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx) 9173 { 9174 struct pci_dev *pdev = adapter->pdev; 9175 struct e1000_mac_info *mac = &adapter->hw.mac; 9176 9177 mac->autoneg = 0; 9178 9179 /* Make sure dplx is at most 1 bit and lsb of speed is not set 9180 * for the switch() below to work 9181 */ 9182 if ((spd & 1) || (dplx & ~1)) 9183 goto err_inval; 9184 9185 /* Fiber NIC's only allow 1000 gbps Full duplex 9186 * and 100Mbps Full duplex for 100baseFx sfp 9187 */ 9188 if (adapter->hw.phy.media_type == e1000_media_type_internal_serdes) { 9189 switch (spd + dplx) { 9190 case SPEED_10 + DUPLEX_HALF: 9191 case SPEED_10 + DUPLEX_FULL: 9192 case SPEED_100 + DUPLEX_HALF: 9193 goto err_inval; 9194 default: 9195 break; 9196 } 9197 } 9198 9199 switch (spd + dplx) { 9200 case SPEED_10 + DUPLEX_HALF: 9201 mac->forced_speed_duplex = ADVERTISE_10_HALF; 9202 break; 9203 case SPEED_10 + DUPLEX_FULL: 9204 mac->forced_speed_duplex = ADVERTISE_10_FULL; 9205 break; 9206 case SPEED_100 + DUPLEX_HALF: 9207 mac->forced_speed_duplex = ADVERTISE_100_HALF; 9208 break; 9209 case SPEED_100 + DUPLEX_FULL: 9210 mac->forced_speed_duplex = ADVERTISE_100_FULL; 9211 break; 9212 case SPEED_1000 + DUPLEX_FULL: 9213 mac->autoneg = 1; 9214 adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; 9215 break; 9216 case SPEED_1000 + DUPLEX_HALF: /* not supported */ 9217 default: 9218 goto err_inval; 9219 } 9220 9221 /* clear MDI, MDI(-X) override is only allowed when autoneg enabled */ 9222 adapter->hw.phy.mdix = AUTO_ALL_MODES; 9223 9224 return 0; 9225 9226 err_inval: 9227 dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n"); 9228 return -EINVAL; 9229 } 9230 9231 static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake, 9232 bool runtime) 9233 { 9234 struct net_device *netdev = pci_get_drvdata(pdev); 9235 struct igb_adapter *adapter = netdev_priv(netdev); 9236 struct e1000_hw *hw = &adapter->hw; 9237 u32 ctrl, rctl, status; 9238 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; 9239 bool wake; 9240 9241 rtnl_lock(); 9242 netif_device_detach(netdev); 9243 9244 if (netif_running(netdev)) 9245 __igb_close(netdev, true); 9246 9247 igb_ptp_suspend(adapter); 9248 9249 igb_clear_interrupt_scheme(adapter); 9250 rtnl_unlock(); 9251 9252 status = rd32(E1000_STATUS); 9253 if (status & E1000_STATUS_LU) 9254 wufc &= ~E1000_WUFC_LNKC; 9255 9256 if (wufc) { 9257 igb_setup_rctl(adapter); 9258 igb_set_rx_mode(netdev); 9259 9260 /* turn on all-multi mode if wake on multicast is enabled */ 9261 if (wufc & E1000_WUFC_MC) { 9262 rctl = rd32(E1000_RCTL); 9263 rctl |= E1000_RCTL_MPE; 9264 wr32(E1000_RCTL, rctl); 9265 } 9266 9267 ctrl = rd32(E1000_CTRL); 9268 ctrl |= E1000_CTRL_ADVD3WUC; 9269 wr32(E1000_CTRL, ctrl); 9270 9271 /* Allow time for pending master requests to run */ 9272 igb_disable_pcie_master(hw); 9273 9274 wr32(E1000_WUC, E1000_WUC_PME_EN); 9275 wr32(E1000_WUFC, wufc); 9276 } else { 9277 wr32(E1000_WUC, 0); 9278 wr32(E1000_WUFC, 0); 9279 } 9280 9281 wake = wufc || adapter->en_mng_pt; 9282 if (!wake) 9283 igb_power_down_link(adapter); 9284 else 9285 igb_power_up_link(adapter); 9286 9287 if (enable_wake) 9288 *enable_wake = wake; 9289 9290 /* Release control of h/w to f/w. If f/w is AMT enabled, this 9291 * would have already happened in close and is redundant. 9292 */ 9293 igb_release_hw_control(adapter); 9294 9295 pci_disable_device(pdev); 9296 9297 return 0; 9298 } 9299 9300 static void igb_deliver_wake_packet(struct net_device *netdev) 9301 { 9302 struct igb_adapter *adapter = netdev_priv(netdev); 9303 struct e1000_hw *hw = &adapter->hw; 9304 struct sk_buff *skb; 9305 u32 wupl; 9306 9307 wupl = rd32(E1000_WUPL) & E1000_WUPL_MASK; 9308 9309 /* WUPM stores only the first 128 bytes of the wake packet. 9310 * Read the packet only if we have the whole thing. 9311 */ 9312 if ((wupl == 0) || (wupl > E1000_WUPM_BYTES)) 9313 return; 9314 9315 skb = netdev_alloc_skb_ip_align(netdev, E1000_WUPM_BYTES); 9316 if (!skb) 9317 return; 9318 9319 skb_put(skb, wupl); 9320 9321 /* Ensure reads are 32-bit aligned */ 9322 wupl = roundup(wupl, 4); 9323 9324 memcpy_fromio(skb->data, hw->hw_addr + E1000_WUPM_REG(0), wupl); 9325 9326 skb->protocol = eth_type_trans(skb, netdev); 9327 netif_rx(skb); 9328 } 9329 9330 static int __maybe_unused igb_suspend(struct device *dev) 9331 { 9332 return __igb_shutdown(to_pci_dev(dev), NULL, 0); 9333 } 9334 9335 static int __maybe_unused __igb_resume(struct device *dev, bool rpm) 9336 { 9337 struct pci_dev *pdev = to_pci_dev(dev); 9338 struct net_device *netdev = pci_get_drvdata(pdev); 9339 struct igb_adapter *adapter = netdev_priv(netdev); 9340 struct e1000_hw *hw = &adapter->hw; 9341 u32 err, val; 9342 9343 pci_set_power_state(pdev, PCI_D0); 9344 pci_restore_state(pdev); 9345 pci_save_state(pdev); 9346 9347 if (!pci_device_is_present(pdev)) 9348 return -ENODEV; 9349 err = pci_enable_device_mem(pdev); 9350 if (err) { 9351 dev_err(&pdev->dev, 9352 "igb: Cannot enable PCI device from suspend\n"); 9353 return err; 9354 } 9355 pci_set_master(pdev); 9356 9357 pci_enable_wake(pdev, PCI_D3hot, 0); 9358 pci_enable_wake(pdev, PCI_D3cold, 0); 9359 9360 if (igb_init_interrupt_scheme(adapter, true)) { 9361 dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); 9362 return -ENOMEM; 9363 } 9364 9365 igb_reset(adapter); 9366 9367 /* let the f/w know that the h/w is now under the control of the 9368 * driver. 9369 */ 9370 igb_get_hw_control(adapter); 9371 9372 val = rd32(E1000_WUS); 9373 if (val & WAKE_PKT_WUS) 9374 igb_deliver_wake_packet(netdev); 9375 9376 wr32(E1000_WUS, ~0); 9377 9378 if (!rpm) 9379 rtnl_lock(); 9380 if (!err && netif_running(netdev)) 9381 err = __igb_open(netdev, true); 9382 9383 if (!err) 9384 netif_device_attach(netdev); 9385 if (!rpm) 9386 rtnl_unlock(); 9387 9388 return err; 9389 } 9390 9391 static int __maybe_unused igb_resume(struct device *dev) 9392 { 9393 return __igb_resume(dev, false); 9394 } 9395 9396 static int __maybe_unused igb_runtime_idle(struct device *dev) 9397 { 9398 struct net_device *netdev = dev_get_drvdata(dev); 9399 struct igb_adapter *adapter = netdev_priv(netdev); 9400 9401 if (!igb_has_link(adapter)) 9402 pm_schedule_suspend(dev, MSEC_PER_SEC * 5); 9403 9404 return -EBUSY; 9405 } 9406 9407 static int __maybe_unused igb_runtime_suspend(struct device *dev) 9408 { 9409 return __igb_shutdown(to_pci_dev(dev), NULL, 1); 9410 } 9411 9412 static int __maybe_unused igb_runtime_resume(struct device *dev) 9413 { 9414 return __igb_resume(dev, true); 9415 } 9416 9417 static void igb_shutdown(struct pci_dev *pdev) 9418 { 9419 bool wake; 9420 9421 __igb_shutdown(pdev, &wake, 0); 9422 9423 if (system_state == SYSTEM_POWER_OFF) { 9424 pci_wake_from_d3(pdev, wake); 9425 pci_set_power_state(pdev, PCI_D3hot); 9426 } 9427 } 9428 9429 #ifdef CONFIG_PCI_IOV 9430 static int igb_sriov_reinit(struct pci_dev *dev) 9431 { 9432 struct net_device *netdev = pci_get_drvdata(dev); 9433 struct igb_adapter *adapter = netdev_priv(netdev); 9434 struct pci_dev *pdev = adapter->pdev; 9435 9436 rtnl_lock(); 9437 9438 if (netif_running(netdev)) 9439 igb_close(netdev); 9440 else 9441 igb_reset(adapter); 9442 9443 igb_clear_interrupt_scheme(adapter); 9444 9445 igb_init_queue_configuration(adapter); 9446 9447 if (igb_init_interrupt_scheme(adapter, true)) { 9448 rtnl_unlock(); 9449 dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); 9450 return -ENOMEM; 9451 } 9452 9453 if (netif_running(netdev)) 9454 igb_open(netdev); 9455 9456 rtnl_unlock(); 9457 9458 return 0; 9459 } 9460 9461 static int igb_pci_disable_sriov(struct pci_dev *dev) 9462 { 9463 int err = igb_disable_sriov(dev); 9464 9465 if (!err) 9466 err = igb_sriov_reinit(dev); 9467 9468 return err; 9469 } 9470 9471 static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs) 9472 { 9473 int err = igb_enable_sriov(dev, num_vfs); 9474 9475 if (err) 9476 goto out; 9477 9478 err = igb_sriov_reinit(dev); 9479 if (!err) 9480 return num_vfs; 9481 9482 out: 9483 return err; 9484 } 9485 9486 #endif 9487 static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs) 9488 { 9489 #ifdef CONFIG_PCI_IOV 9490 if (num_vfs == 0) 9491 return igb_pci_disable_sriov(dev); 9492 else 9493 return igb_pci_enable_sriov(dev, num_vfs); 9494 #endif 9495 return 0; 9496 } 9497 9498 /** 9499 * igb_io_error_detected - called when PCI error is detected 9500 * @pdev: Pointer to PCI device 9501 * @state: The current pci connection state 9502 * 9503 * This function is called after a PCI bus error affecting 9504 * this device has been detected. 9505 **/ 9506 static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, 9507 pci_channel_state_t state) 9508 { 9509 struct net_device *netdev = pci_get_drvdata(pdev); 9510 struct igb_adapter *adapter = netdev_priv(netdev); 9511 9512 netif_device_detach(netdev); 9513 9514 if (state == pci_channel_io_perm_failure) 9515 return PCI_ERS_RESULT_DISCONNECT; 9516 9517 if (netif_running(netdev)) 9518 igb_down(adapter); 9519 pci_disable_device(pdev); 9520 9521 /* Request a slot slot reset. */ 9522 return PCI_ERS_RESULT_NEED_RESET; 9523 } 9524 9525 /** 9526 * igb_io_slot_reset - called after the pci bus has been reset. 9527 * @pdev: Pointer to PCI device 9528 * 9529 * Restart the card from scratch, as if from a cold-boot. Implementation 9530 * resembles the first-half of the __igb_resume routine. 9531 **/ 9532 static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) 9533 { 9534 struct net_device *netdev = pci_get_drvdata(pdev); 9535 struct igb_adapter *adapter = netdev_priv(netdev); 9536 struct e1000_hw *hw = &adapter->hw; 9537 pci_ers_result_t result; 9538 9539 if (pci_enable_device_mem(pdev)) { 9540 dev_err(&pdev->dev, 9541 "Cannot re-enable PCI device after reset.\n"); 9542 result = PCI_ERS_RESULT_DISCONNECT; 9543 } else { 9544 pci_set_master(pdev); 9545 pci_restore_state(pdev); 9546 pci_save_state(pdev); 9547 9548 pci_enable_wake(pdev, PCI_D3hot, 0); 9549 pci_enable_wake(pdev, PCI_D3cold, 0); 9550 9551 /* In case of PCI error, adapter lose its HW address 9552 * so we should re-assign it here. 9553 */ 9554 hw->hw_addr = adapter->io_addr; 9555 9556 igb_reset(adapter); 9557 wr32(E1000_WUS, ~0); 9558 result = PCI_ERS_RESULT_RECOVERED; 9559 } 9560 9561 return result; 9562 } 9563 9564 /** 9565 * igb_io_resume - called when traffic can start flowing again. 9566 * @pdev: Pointer to PCI device 9567 * 9568 * This callback is called when the error recovery driver tells us that 9569 * its OK to resume normal operation. Implementation resembles the 9570 * second-half of the __igb_resume routine. 9571 */ 9572 static void igb_io_resume(struct pci_dev *pdev) 9573 { 9574 struct net_device *netdev = pci_get_drvdata(pdev); 9575 struct igb_adapter *adapter = netdev_priv(netdev); 9576 9577 if (netif_running(netdev)) { 9578 if (igb_up(adapter)) { 9579 dev_err(&pdev->dev, "igb_up failed after reset\n"); 9580 return; 9581 } 9582 } 9583 9584 netif_device_attach(netdev); 9585 9586 /* let the f/w know that the h/w is now under the control of the 9587 * driver. 9588 */ 9589 igb_get_hw_control(adapter); 9590 } 9591 9592 /** 9593 * igb_rar_set_index - Sync RAL[index] and RAH[index] registers with MAC table 9594 * @adapter: Pointer to adapter structure 9595 * @index: Index of the RAR entry which need to be synced with MAC table 9596 **/ 9597 static void igb_rar_set_index(struct igb_adapter *adapter, u32 index) 9598 { 9599 struct e1000_hw *hw = &adapter->hw; 9600 u32 rar_low, rar_high; 9601 u8 *addr = adapter->mac_table[index].addr; 9602 9603 /* HW expects these to be in network order when they are plugged 9604 * into the registers which are little endian. In order to guarantee 9605 * that ordering we need to do an leXX_to_cpup here in order to be 9606 * ready for the byteswap that occurs with writel 9607 */ 9608 rar_low = le32_to_cpup((__le32 *)(addr)); 9609 rar_high = le16_to_cpup((__le16 *)(addr + 4)); 9610 9611 /* Indicate to hardware the Address is Valid. */ 9612 if (adapter->mac_table[index].state & IGB_MAC_STATE_IN_USE) { 9613 if (is_valid_ether_addr(addr)) 9614 rar_high |= E1000_RAH_AV; 9615 9616 if (adapter->mac_table[index].state & IGB_MAC_STATE_SRC_ADDR) 9617 rar_high |= E1000_RAH_ASEL_SRC_ADDR; 9618 9619 switch (hw->mac.type) { 9620 case e1000_82575: 9621 case e1000_i210: 9622 if (adapter->mac_table[index].state & 9623 IGB_MAC_STATE_QUEUE_STEERING) 9624 rar_high |= E1000_RAH_QSEL_ENABLE; 9625 9626 rar_high |= E1000_RAH_POOL_1 * 9627 adapter->mac_table[index].queue; 9628 break; 9629 default: 9630 rar_high |= E1000_RAH_POOL_1 << 9631 adapter->mac_table[index].queue; 9632 break; 9633 } 9634 } 9635 9636 wr32(E1000_RAL(index), rar_low); 9637 wrfl(); 9638 wr32(E1000_RAH(index), rar_high); 9639 wrfl(); 9640 } 9641 9642 static int igb_set_vf_mac(struct igb_adapter *adapter, 9643 int vf, unsigned char *mac_addr) 9644 { 9645 struct e1000_hw *hw = &adapter->hw; 9646 /* VF MAC addresses start at end of receive addresses and moves 9647 * towards the first, as a result a collision should not be possible 9648 */ 9649 int rar_entry = hw->mac.rar_entry_count - (vf + 1); 9650 unsigned char *vf_mac_addr = adapter->vf_data[vf].vf_mac_addresses; 9651 9652 ether_addr_copy(vf_mac_addr, mac_addr); 9653 ether_addr_copy(adapter->mac_table[rar_entry].addr, mac_addr); 9654 adapter->mac_table[rar_entry].queue = vf; 9655 adapter->mac_table[rar_entry].state |= IGB_MAC_STATE_IN_USE; 9656 igb_rar_set_index(adapter, rar_entry); 9657 9658 return 0; 9659 } 9660 9661 static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 9662 { 9663 struct igb_adapter *adapter = netdev_priv(netdev); 9664 9665 if (vf >= adapter->vfs_allocated_count) 9666 return -EINVAL; 9667 9668 /* Setting the VF MAC to 0 reverts the IGB_VF_FLAG_PF_SET_MAC 9669 * flag and allows to overwrite the MAC via VF netdev. This 9670 * is necessary to allow libvirt a way to restore the original 9671 * MAC after unbinding vfio-pci and reloading igbvf after shutting 9672 * down a VM. 9673 */ 9674 if (is_zero_ether_addr(mac)) { 9675 adapter->vf_data[vf].flags &= ~IGB_VF_FLAG_PF_SET_MAC; 9676 dev_info(&adapter->pdev->dev, 9677 "remove administratively set MAC on VF %d\n", 9678 vf); 9679 } else if (is_valid_ether_addr(mac)) { 9680 adapter->vf_data[vf].flags |= IGB_VF_FLAG_PF_SET_MAC; 9681 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", 9682 mac, vf); 9683 dev_info(&adapter->pdev->dev, 9684 "Reload the VF driver to make this change effective."); 9685 /* Generate additional warning if PF is down */ 9686 if (test_bit(__IGB_DOWN, &adapter->state)) { 9687 dev_warn(&adapter->pdev->dev, 9688 "The VF MAC address has been set, but the PF device is not up.\n"); 9689 dev_warn(&adapter->pdev->dev, 9690 "Bring the PF device up before attempting to use the VF device.\n"); 9691 } 9692 } else { 9693 return -EINVAL; 9694 } 9695 return igb_set_vf_mac(adapter, vf, mac); 9696 } 9697 9698 static int igb_link_mbps(int internal_link_speed) 9699 { 9700 switch (internal_link_speed) { 9701 case SPEED_100: 9702 return 100; 9703 case SPEED_1000: 9704 return 1000; 9705 default: 9706 return 0; 9707 } 9708 } 9709 9710 static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate, 9711 int link_speed) 9712 { 9713 int rf_dec, rf_int; 9714 u32 bcnrc_val; 9715 9716 if (tx_rate != 0) { 9717 /* Calculate the rate factor values to set */ 9718 rf_int = link_speed / tx_rate; 9719 rf_dec = (link_speed - (rf_int * tx_rate)); 9720 rf_dec = (rf_dec * BIT(E1000_RTTBCNRC_RF_INT_SHIFT)) / 9721 tx_rate; 9722 9723 bcnrc_val = E1000_RTTBCNRC_RS_ENA; 9724 bcnrc_val |= ((rf_int << E1000_RTTBCNRC_RF_INT_SHIFT) & 9725 E1000_RTTBCNRC_RF_INT_MASK); 9726 bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK); 9727 } else { 9728 bcnrc_val = 0; 9729 } 9730 9731 wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */ 9732 /* Set global transmit compensation time to the MMW_SIZE in RTTBCNRM 9733 * register. MMW_SIZE=0x014 if 9728-byte jumbo is supported. 9734 */ 9735 wr32(E1000_RTTBCNRM, 0x14); 9736 wr32(E1000_RTTBCNRC, bcnrc_val); 9737 } 9738 9739 static void igb_check_vf_rate_limit(struct igb_adapter *adapter) 9740 { 9741 int actual_link_speed, i; 9742 bool reset_rate = false; 9743 9744 /* VF TX rate limit was not set or not supported */ 9745 if ((adapter->vf_rate_link_speed == 0) || 9746 (adapter->hw.mac.type != e1000_82576)) 9747 return; 9748 9749 actual_link_speed = igb_link_mbps(adapter->link_speed); 9750 if (actual_link_speed != adapter->vf_rate_link_speed) { 9751 reset_rate = true; 9752 adapter->vf_rate_link_speed = 0; 9753 dev_info(&adapter->pdev->dev, 9754 "Link speed has been changed. VF Transmit rate is disabled\n"); 9755 } 9756 9757 for (i = 0; i < adapter->vfs_allocated_count; i++) { 9758 if (reset_rate) 9759 adapter->vf_data[i].tx_rate = 0; 9760 9761 igb_set_vf_rate_limit(&adapter->hw, i, 9762 adapter->vf_data[i].tx_rate, 9763 actual_link_speed); 9764 } 9765 } 9766 9767 static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, 9768 int min_tx_rate, int max_tx_rate) 9769 { 9770 struct igb_adapter *adapter = netdev_priv(netdev); 9771 struct e1000_hw *hw = &adapter->hw; 9772 int actual_link_speed; 9773 9774 if (hw->mac.type != e1000_82576) 9775 return -EOPNOTSUPP; 9776 9777 if (min_tx_rate) 9778 return -EINVAL; 9779 9780 actual_link_speed = igb_link_mbps(adapter->link_speed); 9781 if ((vf >= adapter->vfs_allocated_count) || 9782 (!(rd32(E1000_STATUS) & E1000_STATUS_LU)) || 9783 (max_tx_rate < 0) || 9784 (max_tx_rate > actual_link_speed)) 9785 return -EINVAL; 9786 9787 adapter->vf_rate_link_speed = actual_link_speed; 9788 adapter->vf_data[vf].tx_rate = (u16)max_tx_rate; 9789 igb_set_vf_rate_limit(hw, vf, max_tx_rate, actual_link_speed); 9790 9791 return 0; 9792 } 9793 9794 static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, 9795 bool setting) 9796 { 9797 struct igb_adapter *adapter = netdev_priv(netdev); 9798 struct e1000_hw *hw = &adapter->hw; 9799 u32 reg_val, reg_offset; 9800 9801 if (!adapter->vfs_allocated_count) 9802 return -EOPNOTSUPP; 9803 9804 if (vf >= adapter->vfs_allocated_count) 9805 return -EINVAL; 9806 9807 reg_offset = (hw->mac.type == e1000_82576) ? E1000_DTXSWC : E1000_TXSWC; 9808 reg_val = rd32(reg_offset); 9809 if (setting) 9810 reg_val |= (BIT(vf) | 9811 BIT(vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)); 9812 else 9813 reg_val &= ~(BIT(vf) | 9814 BIT(vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT)); 9815 wr32(reg_offset, reg_val); 9816 9817 adapter->vf_data[vf].spoofchk_enabled = setting; 9818 return 0; 9819 } 9820 9821 static int igb_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting) 9822 { 9823 struct igb_adapter *adapter = netdev_priv(netdev); 9824 9825 if (vf >= adapter->vfs_allocated_count) 9826 return -EINVAL; 9827 if (adapter->vf_data[vf].trusted == setting) 9828 return 0; 9829 9830 adapter->vf_data[vf].trusted = setting; 9831 9832 dev_info(&adapter->pdev->dev, "VF %u is %strusted\n", 9833 vf, setting ? "" : "not "); 9834 return 0; 9835 } 9836 9837 static int igb_ndo_get_vf_config(struct net_device *netdev, 9838 int vf, struct ifla_vf_info *ivi) 9839 { 9840 struct igb_adapter *adapter = netdev_priv(netdev); 9841 if (vf >= adapter->vfs_allocated_count) 9842 return -EINVAL; 9843 ivi->vf = vf; 9844 memcpy(&ivi->mac, adapter->vf_data[vf].vf_mac_addresses, ETH_ALEN); 9845 ivi->max_tx_rate = adapter->vf_data[vf].tx_rate; 9846 ivi->min_tx_rate = 0; 9847 ivi->vlan = adapter->vf_data[vf].pf_vlan; 9848 ivi->qos = adapter->vf_data[vf].pf_qos; 9849 ivi->spoofchk = adapter->vf_data[vf].spoofchk_enabled; 9850 ivi->trusted = adapter->vf_data[vf].trusted; 9851 return 0; 9852 } 9853 9854 static void igb_vmm_control(struct igb_adapter *adapter) 9855 { 9856 struct e1000_hw *hw = &adapter->hw; 9857 u32 reg; 9858 9859 switch (hw->mac.type) { 9860 case e1000_82575: 9861 case e1000_i210: 9862 case e1000_i211: 9863 case e1000_i354: 9864 default: 9865 /* replication is not supported for 82575 */ 9866 return; 9867 case e1000_82576: 9868 /* notify HW that the MAC is adding vlan tags */ 9869 reg = rd32(E1000_DTXCTL); 9870 reg |= E1000_DTXCTL_VLAN_ADDED; 9871 wr32(E1000_DTXCTL, reg); 9872 fallthrough; 9873 case e1000_82580: 9874 /* enable replication vlan tag stripping */ 9875 reg = rd32(E1000_RPLOLR); 9876 reg |= E1000_RPLOLR_STRVLAN; 9877 wr32(E1000_RPLOLR, reg); 9878 fallthrough; 9879 case e1000_i350: 9880 /* none of the above registers are supported by i350 */ 9881 break; 9882 } 9883 9884 if (adapter->vfs_allocated_count) { 9885 igb_vmdq_set_loopback_pf(hw, true); 9886 igb_vmdq_set_replication_pf(hw, true); 9887 igb_vmdq_set_anti_spoofing_pf(hw, true, 9888 adapter->vfs_allocated_count); 9889 } else { 9890 igb_vmdq_set_loopback_pf(hw, false); 9891 igb_vmdq_set_replication_pf(hw, false); 9892 } 9893 } 9894 9895 static void igb_init_dmac(struct igb_adapter *adapter, u32 pba) 9896 { 9897 struct e1000_hw *hw = &adapter->hw; 9898 u32 dmac_thr; 9899 u16 hwm; 9900 9901 if (hw->mac.type > e1000_82580) { 9902 if (adapter->flags & IGB_FLAG_DMAC) { 9903 u32 reg; 9904 9905 /* force threshold to 0. */ 9906 wr32(E1000_DMCTXTH, 0); 9907 9908 /* DMA Coalescing high water mark needs to be greater 9909 * than the Rx threshold. Set hwm to PBA - max frame 9910 * size in 16B units, capping it at PBA - 6KB. 9911 */ 9912 hwm = 64 * (pba - 6); 9913 reg = rd32(E1000_FCRTC); 9914 reg &= ~E1000_FCRTC_RTH_COAL_MASK; 9915 reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT) 9916 & E1000_FCRTC_RTH_COAL_MASK); 9917 wr32(E1000_FCRTC, reg); 9918 9919 /* Set the DMA Coalescing Rx threshold to PBA - 2 * max 9920 * frame size, capping it at PBA - 10KB. 9921 */ 9922 dmac_thr = pba - 10; 9923 reg = rd32(E1000_DMACR); 9924 reg &= ~E1000_DMACR_DMACTHR_MASK; 9925 reg |= ((dmac_thr << E1000_DMACR_DMACTHR_SHIFT) 9926 & E1000_DMACR_DMACTHR_MASK); 9927 9928 /* transition to L0x or L1 if available..*/ 9929 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK); 9930 9931 /* watchdog timer= +-1000 usec in 32usec intervals */ 9932 reg |= (1000 >> 5); 9933 9934 /* Disable BMC-to-OS Watchdog Enable */ 9935 if (hw->mac.type != e1000_i354) 9936 reg &= ~E1000_DMACR_DC_BMC2OSW_EN; 9937 9938 wr32(E1000_DMACR, reg); 9939 9940 /* no lower threshold to disable 9941 * coalescing(smart fifb)-UTRESH=0 9942 */ 9943 wr32(E1000_DMCRTRH, 0); 9944 9945 reg = (IGB_DMCTLX_DCFLUSH_DIS | 0x4); 9946 9947 wr32(E1000_DMCTLX, reg); 9948 9949 /* free space in tx packet buffer to wake from 9950 * DMA coal 9951 */ 9952 wr32(E1000_DMCTXTH, (IGB_MIN_TXPBSIZE - 9953 (IGB_TX_BUF_4096 + adapter->max_frame_size)) >> 6); 9954 9955 /* make low power state decision controlled 9956 * by DMA coal 9957 */ 9958 reg = rd32(E1000_PCIEMISC); 9959 reg &= ~E1000_PCIEMISC_LX_DECISION; 9960 wr32(E1000_PCIEMISC, reg); 9961 } /* endif adapter->dmac is not disabled */ 9962 } else if (hw->mac.type == e1000_82580) { 9963 u32 reg = rd32(E1000_PCIEMISC); 9964 9965 wr32(E1000_PCIEMISC, reg & ~E1000_PCIEMISC_LX_DECISION); 9966 wr32(E1000_DMACR, 0); 9967 } 9968 } 9969 9970 /** 9971 * igb_read_i2c_byte - Reads 8 bit word over I2C 9972 * @hw: pointer to hardware structure 9973 * @byte_offset: byte offset to read 9974 * @dev_addr: device address 9975 * @data: value read 9976 * 9977 * Performs byte read operation over I2C interface at 9978 * a specified device address. 9979 **/ 9980 s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset, 9981 u8 dev_addr, u8 *data) 9982 { 9983 struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); 9984 struct i2c_client *this_client = adapter->i2c_client; 9985 s32 status; 9986 u16 swfw_mask = 0; 9987 9988 if (!this_client) 9989 return E1000_ERR_I2C; 9990 9991 swfw_mask = E1000_SWFW_PHY0_SM; 9992 9993 if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)) 9994 return E1000_ERR_SWFW_SYNC; 9995 9996 status = i2c_smbus_read_byte_data(this_client, byte_offset); 9997 hw->mac.ops.release_swfw_sync(hw, swfw_mask); 9998 9999 if (status < 0) 10000 return E1000_ERR_I2C; 10001 else { 10002 *data = status; 10003 return 0; 10004 } 10005 } 10006 10007 /** 10008 * igb_write_i2c_byte - Writes 8 bit word over I2C 10009 * @hw: pointer to hardware structure 10010 * @byte_offset: byte offset to write 10011 * @dev_addr: device address 10012 * @data: value to write 10013 * 10014 * Performs byte write operation over I2C interface at 10015 * a specified device address. 10016 **/ 10017 s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset, 10018 u8 dev_addr, u8 data) 10019 { 10020 struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); 10021 struct i2c_client *this_client = adapter->i2c_client; 10022 s32 status; 10023 u16 swfw_mask = E1000_SWFW_PHY0_SM; 10024 10025 if (!this_client) 10026 return E1000_ERR_I2C; 10027 10028 if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)) 10029 return E1000_ERR_SWFW_SYNC; 10030 status = i2c_smbus_write_byte_data(this_client, byte_offset, data); 10031 hw->mac.ops.release_swfw_sync(hw, swfw_mask); 10032 10033 if (status) 10034 return E1000_ERR_I2C; 10035 else 10036 return 0; 10037 10038 } 10039 10040 int igb_reinit_queues(struct igb_adapter *adapter) 10041 { 10042 struct net_device *netdev = adapter->netdev; 10043 struct pci_dev *pdev = adapter->pdev; 10044 int err = 0; 10045 10046 if (netif_running(netdev)) 10047 igb_close(netdev); 10048 10049 igb_reset_interrupt_capability(adapter); 10050 10051 if (igb_init_interrupt_scheme(adapter, true)) { 10052 dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); 10053 return -ENOMEM; 10054 } 10055 10056 if (netif_running(netdev)) 10057 err = igb_open(netdev); 10058 10059 return err; 10060 } 10061 10062 static void igb_nfc_filter_exit(struct igb_adapter *adapter) 10063 { 10064 struct igb_nfc_filter *rule; 10065 10066 spin_lock(&adapter->nfc_lock); 10067 10068 hlist_for_each_entry(rule, &adapter->nfc_filter_list, nfc_node) 10069 igb_erase_filter(adapter, rule); 10070 10071 hlist_for_each_entry(rule, &adapter->cls_flower_list, nfc_node) 10072 igb_erase_filter(adapter, rule); 10073 10074 spin_unlock(&adapter->nfc_lock); 10075 } 10076 10077 static void igb_nfc_filter_restore(struct igb_adapter *adapter) 10078 { 10079 struct igb_nfc_filter *rule; 10080 10081 spin_lock(&adapter->nfc_lock); 10082 10083 hlist_for_each_entry(rule, &adapter->nfc_filter_list, nfc_node) 10084 igb_add_filter(adapter, rule); 10085 10086 spin_unlock(&adapter->nfc_lock); 10087 } 10088 /* igb_main.c */ 10089