1 /* Intel(R) Gigabit Ethernet Linux driver 2 * Copyright(c) 2007-2014 Intel Corporation. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License along with 14 * this program; if not, see <http://www.gnu.org/licenses/>. 15 * 16 * The full GNU General Public License is included in this distribution in 17 * the file called "COPYING". 18 * 19 * Contact Information: 20 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 21 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 22 */ 23 24 /* Linux PRO/1000 Ethernet Driver main header file */ 25 26 #ifndef _IGB_H_ 27 #define _IGB_H_ 28 29 #include "e1000_mac.h" 30 #include "e1000_82575.h" 31 32 #include <linux/clocksource.h> 33 #include <linux/net_tstamp.h> 34 #include <linux/ptp_clock_kernel.h> 35 #include <linux/bitops.h> 36 #include <linux/if_vlan.h> 37 #include <linux/i2c.h> 38 #include <linux/i2c-algo-bit.h> 39 #include <linux/pci.h> 40 #include <linux/mdio.h> 41 42 struct igb_adapter; 43 44 #define E1000_PCS_CFG_IGN_SD 1 45 46 /* Interrupt defines */ 47 #define IGB_START_ITR 648 /* ~6000 ints/sec */ 48 #define IGB_4K_ITR 980 49 #define IGB_20K_ITR 196 50 #define IGB_70K_ITR 56 51 52 /* TX/RX descriptor defines */ 53 #define IGB_DEFAULT_TXD 256 54 #define IGB_DEFAULT_TX_WORK 128 55 #define IGB_MIN_TXD 80 56 #define IGB_MAX_TXD 4096 57 58 #define IGB_DEFAULT_RXD 256 59 #define IGB_MIN_RXD 80 60 #define IGB_MAX_RXD 4096 61 62 #define IGB_DEFAULT_ITR 3 /* dynamic */ 63 #define IGB_MAX_ITR_USECS 10000 64 #define IGB_MIN_ITR_USECS 10 65 #define NON_Q_VECTORS 1 66 #define MAX_Q_VECTORS 8 67 #define MAX_MSIX_ENTRIES 10 68 69 /* Transmit and receive queues */ 70 #define IGB_MAX_RX_QUEUES 8 71 #define IGB_MAX_RX_QUEUES_82575 4 72 #define IGB_MAX_RX_QUEUES_I211 2 73 #define IGB_MAX_TX_QUEUES 8 74 #define IGB_MAX_VF_MC_ENTRIES 30 75 #define IGB_MAX_VF_FUNCTIONS 8 76 #define IGB_MAX_VFTA_ENTRIES 128 77 #define IGB_82576_VF_DEV_ID 0x10CA 78 #define IGB_I350_VF_DEV_ID 0x1520 79 80 /* NVM version defines */ 81 #define IGB_MAJOR_MASK 0xF000 82 #define IGB_MINOR_MASK 0x0FF0 83 #define IGB_BUILD_MASK 0x000F 84 #define IGB_COMB_VER_MASK 0x00FF 85 #define IGB_MAJOR_SHIFT 12 86 #define IGB_MINOR_SHIFT 4 87 #define IGB_COMB_VER_SHFT 8 88 #define IGB_NVM_VER_INVALID 0xFFFF 89 #define IGB_ETRACK_SHIFT 16 90 #define NVM_ETRACK_WORD 0x0042 91 #define NVM_COMB_VER_OFF 0x0083 92 #define NVM_COMB_VER_PTR 0x003d 93 94 struct vf_data_storage { 95 unsigned char vf_mac_addresses[ETH_ALEN]; 96 u16 vf_mc_hashes[IGB_MAX_VF_MC_ENTRIES]; 97 u16 num_vf_mc_hashes; 98 u16 vlans_enabled; 99 u32 flags; 100 unsigned long last_nack; 101 u16 pf_vlan; /* When set, guest VLAN config not allowed. */ 102 u16 pf_qos; 103 u16 tx_rate; 104 bool spoofchk_enabled; 105 }; 106 107 #define IGB_VF_FLAG_CTS 0x00000001 /* VF is clear to send data */ 108 #define IGB_VF_FLAG_UNI_PROMISC 0x00000002 /* VF has unicast promisc */ 109 #define IGB_VF_FLAG_MULTI_PROMISC 0x00000004 /* VF has multicast promisc */ 110 #define IGB_VF_FLAG_PF_SET_MAC 0x00000008 /* PF has set MAC address */ 111 112 /* RX descriptor control thresholds. 113 * PTHRESH - MAC will consider prefetch if it has fewer than this number of 114 * descriptors available in its onboard memory. 115 * Setting this to 0 disables RX descriptor prefetch. 116 * HTHRESH - MAC will only prefetch if there are at least this many descriptors 117 * available in host memory. 118 * If PTHRESH is 0, this should also be 0. 119 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back 120 * descriptors until either it has this many to write back, or the 121 * ITR timer expires. 122 */ 123 #define IGB_RX_PTHRESH ((hw->mac.type == e1000_i354) ? 12 : 8) 124 #define IGB_RX_HTHRESH 8 125 #define IGB_TX_PTHRESH ((hw->mac.type == e1000_i354) ? 20 : 8) 126 #define IGB_TX_HTHRESH 1 127 #define IGB_RX_WTHRESH ((hw->mac.type == e1000_82576 && \ 128 (adapter->flags & IGB_FLAG_HAS_MSIX)) ? 1 : 4) 129 #define IGB_TX_WTHRESH ((hw->mac.type == e1000_82576 && \ 130 (adapter->flags & IGB_FLAG_HAS_MSIX)) ? 1 : 16) 131 132 /* this is the size past which hardware will drop packets when setting LPE=0 */ 133 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522 134 135 /* Supported Rx Buffer Sizes */ 136 #define IGB_RXBUFFER_256 256 137 #define IGB_RXBUFFER_2048 2048 138 #define IGB_RX_HDR_LEN IGB_RXBUFFER_256 139 #define IGB_RX_BUFSZ IGB_RXBUFFER_2048 140 141 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 142 #define IGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 143 144 #define AUTO_ALL_MODES 0 145 #define IGB_EEPROM_APME 0x0400 146 147 #ifndef IGB_MASTER_SLAVE 148 /* Switch to override PHY master/slave setting */ 149 #define IGB_MASTER_SLAVE e1000_ms_hw_default 150 #endif 151 152 #define IGB_MNG_VLAN_NONE -1 153 154 enum igb_tx_flags { 155 /* cmd_type flags */ 156 IGB_TX_FLAGS_VLAN = 0x01, 157 IGB_TX_FLAGS_TSO = 0x02, 158 IGB_TX_FLAGS_TSTAMP = 0x04, 159 160 /* olinfo flags */ 161 IGB_TX_FLAGS_IPV4 = 0x10, 162 IGB_TX_FLAGS_CSUM = 0x20, 163 }; 164 165 /* VLAN info */ 166 #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 167 #define IGB_TX_FLAGS_VLAN_SHIFT 16 168 169 /* The largest size we can write to the descriptor is 65535. In order to 170 * maintain a power of two alignment we have to limit ourselves to 32K. 171 */ 172 #define IGB_MAX_TXD_PWR 15 173 #define IGB_MAX_DATA_PER_TXD (1 << IGB_MAX_TXD_PWR) 174 175 /* Tx Descriptors needed, worst case */ 176 #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IGB_MAX_DATA_PER_TXD) 177 #define DESC_NEEDED (MAX_SKB_FRAGS + 4) 178 179 /* EEPROM byte offsets */ 180 #define IGB_SFF_8472_SWAP 0x5C 181 #define IGB_SFF_8472_COMP 0x5E 182 183 /* Bitmasks */ 184 #define IGB_SFF_ADDRESSING_MODE 0x4 185 #define IGB_SFF_8472_UNSUP 0x00 186 187 /* wrapper around a pointer to a socket buffer, 188 * so a DMA handle can be stored along with the buffer 189 */ 190 struct igb_tx_buffer { 191 union e1000_adv_tx_desc *next_to_watch; 192 unsigned long time_stamp; 193 struct sk_buff *skb; 194 unsigned int bytecount; 195 u16 gso_segs; 196 __be16 protocol; 197 198 DEFINE_DMA_UNMAP_ADDR(dma); 199 DEFINE_DMA_UNMAP_LEN(len); 200 u32 tx_flags; 201 }; 202 203 struct igb_rx_buffer { 204 dma_addr_t dma; 205 struct page *page; 206 unsigned int page_offset; 207 }; 208 209 struct igb_tx_queue_stats { 210 u64 packets; 211 u64 bytes; 212 u64 restart_queue; 213 u64 restart_queue2; 214 }; 215 216 struct igb_rx_queue_stats { 217 u64 packets; 218 u64 bytes; 219 u64 drops; 220 u64 csum_err; 221 u64 alloc_failed; 222 }; 223 224 struct igb_ring_container { 225 struct igb_ring *ring; /* pointer to linked list of rings */ 226 unsigned int total_bytes; /* total bytes processed this int */ 227 unsigned int total_packets; /* total packets processed this int */ 228 u16 work_limit; /* total work allowed per interrupt */ 229 u8 count; /* total number of rings in vector */ 230 u8 itr; /* current ITR setting for ring */ 231 }; 232 233 struct igb_ring { 234 struct igb_q_vector *q_vector; /* backlink to q_vector */ 235 struct net_device *netdev; /* back pointer to net_device */ 236 struct device *dev; /* device pointer for dma mapping */ 237 union { /* array of buffer info structs */ 238 struct igb_tx_buffer *tx_buffer_info; 239 struct igb_rx_buffer *rx_buffer_info; 240 }; 241 void *desc; /* descriptor ring memory */ 242 unsigned long flags; /* ring specific flags */ 243 void __iomem *tail; /* pointer to ring tail register */ 244 dma_addr_t dma; /* phys address of the ring */ 245 unsigned int size; /* length of desc. ring in bytes */ 246 247 u16 count; /* number of desc. in the ring */ 248 u8 queue_index; /* logical index of the ring*/ 249 u8 reg_idx; /* physical index of the ring */ 250 251 /* everything past this point are written often */ 252 u16 next_to_clean; 253 u16 next_to_use; 254 u16 next_to_alloc; 255 256 union { 257 /* TX */ 258 struct { 259 struct igb_tx_queue_stats tx_stats; 260 struct u64_stats_sync tx_syncp; 261 struct u64_stats_sync tx_syncp2; 262 }; 263 /* RX */ 264 struct { 265 struct sk_buff *skb; 266 struct igb_rx_queue_stats rx_stats; 267 struct u64_stats_sync rx_syncp; 268 }; 269 }; 270 } ____cacheline_internodealigned_in_smp; 271 272 struct igb_q_vector { 273 struct igb_adapter *adapter; /* backlink */ 274 int cpu; /* CPU for DCA */ 275 u32 eims_value; /* EIMS mask value */ 276 277 u16 itr_val; 278 u8 set_itr; 279 void __iomem *itr_register; 280 281 struct igb_ring_container rx, tx; 282 283 struct napi_struct napi; 284 struct rcu_head rcu; /* to avoid race with update stats on free */ 285 char name[IFNAMSIZ + 9]; 286 287 /* for dynamic allocation of rings associated with this q_vector */ 288 struct igb_ring ring[0] ____cacheline_internodealigned_in_smp; 289 }; 290 291 enum e1000_ring_flags_t { 292 IGB_RING_FLAG_RX_SCTP_CSUM, 293 IGB_RING_FLAG_RX_LB_VLAN_BSWAP, 294 IGB_RING_FLAG_TX_CTX_IDX, 295 IGB_RING_FLAG_TX_DETECT_HANG 296 }; 297 298 #define IGB_TXD_DCMD (E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_RS) 299 300 #define IGB_RX_DESC(R, i) \ 301 (&(((union e1000_adv_rx_desc *)((R)->desc))[i])) 302 #define IGB_TX_DESC(R, i) \ 303 (&(((union e1000_adv_tx_desc *)((R)->desc))[i])) 304 #define IGB_TX_CTXTDESC(R, i) \ 305 (&(((struct e1000_adv_tx_context_desc *)((R)->desc))[i])) 306 307 /* igb_test_staterr - tests bits within Rx descriptor status and error fields */ 308 static inline __le32 igb_test_staterr(union e1000_adv_rx_desc *rx_desc, 309 const u32 stat_err_bits) 310 { 311 return rx_desc->wb.upper.status_error & cpu_to_le32(stat_err_bits); 312 } 313 314 /* igb_desc_unused - calculate if we have unused descriptors */ 315 static inline int igb_desc_unused(struct igb_ring *ring) 316 { 317 if (ring->next_to_clean > ring->next_to_use) 318 return ring->next_to_clean - ring->next_to_use - 1; 319 320 return ring->count + ring->next_to_clean - ring->next_to_use - 1; 321 } 322 323 #ifdef CONFIG_IGB_HWMON 324 325 #define IGB_HWMON_TYPE_LOC 0 326 #define IGB_HWMON_TYPE_TEMP 1 327 #define IGB_HWMON_TYPE_CAUTION 2 328 #define IGB_HWMON_TYPE_MAX 3 329 330 struct hwmon_attr { 331 struct device_attribute dev_attr; 332 struct e1000_hw *hw; 333 struct e1000_thermal_diode_data *sensor; 334 char name[12]; 335 }; 336 337 struct hwmon_buff { 338 struct attribute_group group; 339 const struct attribute_group *groups[2]; 340 struct attribute *attrs[E1000_MAX_SENSORS * 4 + 1]; 341 struct hwmon_attr hwmon_list[E1000_MAX_SENSORS * 4]; 342 unsigned int n_hwmon; 343 }; 344 #endif 345 346 #define IGB_RETA_SIZE 128 347 348 /* board specific private data structure */ 349 struct igb_adapter { 350 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 351 352 struct net_device *netdev; 353 354 unsigned long state; 355 unsigned int flags; 356 357 unsigned int num_q_vectors; 358 struct msix_entry msix_entries[MAX_MSIX_ENTRIES]; 359 360 /* Interrupt Throttle Rate */ 361 u32 rx_itr_setting; 362 u32 tx_itr_setting; 363 u16 tx_itr; 364 u16 rx_itr; 365 366 /* TX */ 367 u16 tx_work_limit; 368 u32 tx_timeout_count; 369 int num_tx_queues; 370 struct igb_ring *tx_ring[16]; 371 372 /* RX */ 373 int num_rx_queues; 374 struct igb_ring *rx_ring[16]; 375 376 u32 max_frame_size; 377 u32 min_frame_size; 378 379 struct timer_list watchdog_timer; 380 struct timer_list phy_info_timer; 381 382 u16 mng_vlan_id; 383 u32 bd_number; 384 u32 wol; 385 u32 en_mng_pt; 386 u16 link_speed; 387 u16 link_duplex; 388 389 struct work_struct reset_task; 390 struct work_struct watchdog_task; 391 bool fc_autoneg; 392 u8 tx_timeout_factor; 393 struct timer_list blink_timer; 394 unsigned long led_status; 395 396 /* OS defined structs */ 397 struct pci_dev *pdev; 398 399 spinlock_t stats64_lock; 400 struct rtnl_link_stats64 stats64; 401 402 /* structs defined in e1000_hw.h */ 403 struct e1000_hw hw; 404 struct e1000_hw_stats stats; 405 struct e1000_phy_info phy_info; 406 407 u32 test_icr; 408 struct igb_ring test_tx_ring; 409 struct igb_ring test_rx_ring; 410 411 int msg_enable; 412 413 struct igb_q_vector *q_vector[MAX_Q_VECTORS]; 414 u32 eims_enable_mask; 415 u32 eims_other; 416 417 /* to not mess up cache alignment, always add to the bottom */ 418 u16 tx_ring_count; 419 u16 rx_ring_count; 420 unsigned int vfs_allocated_count; 421 struct vf_data_storage *vf_data; 422 int vf_rate_link_speed; 423 u32 rss_queues; 424 u32 wvbr; 425 u32 *shadow_vfta; 426 427 struct ptp_clock *ptp_clock; 428 struct ptp_clock_info ptp_caps; 429 struct delayed_work ptp_overflow_work; 430 struct work_struct ptp_tx_work; 431 struct sk_buff *ptp_tx_skb; 432 struct hwtstamp_config tstamp_config; 433 unsigned long ptp_tx_start; 434 unsigned long last_rx_ptp_check; 435 unsigned long last_rx_timestamp; 436 spinlock_t tmreg_lock; 437 struct cyclecounter cc; 438 struct timecounter tc; 439 u32 tx_hwtstamp_timeouts; 440 u32 rx_hwtstamp_cleared; 441 442 char fw_version[32]; 443 #ifdef CONFIG_IGB_HWMON 444 struct hwmon_buff *igb_hwmon_buff; 445 bool ets; 446 #endif 447 struct i2c_algo_bit_data i2c_algo; 448 struct i2c_adapter i2c_adap; 449 struct i2c_client *i2c_client; 450 u32 rss_indir_tbl_init; 451 u8 rss_indir_tbl[IGB_RETA_SIZE]; 452 453 unsigned long link_check_timeout; 454 int copper_tries; 455 struct e1000_info ei; 456 u16 eee_advert; 457 }; 458 459 #define IGB_FLAG_HAS_MSI (1 << 0) 460 #define IGB_FLAG_DCA_ENABLED (1 << 1) 461 #define IGB_FLAG_QUAD_PORT_A (1 << 2) 462 #define IGB_FLAG_QUEUE_PAIRS (1 << 3) 463 #define IGB_FLAG_DMAC (1 << 4) 464 #define IGB_FLAG_PTP (1 << 5) 465 #define IGB_FLAG_RSS_FIELD_IPV4_UDP (1 << 6) 466 #define IGB_FLAG_RSS_FIELD_IPV6_UDP (1 << 7) 467 #define IGB_FLAG_WOL_SUPPORTED (1 << 8) 468 #define IGB_FLAG_NEED_LINK_UPDATE (1 << 9) 469 #define IGB_FLAG_MEDIA_RESET (1 << 10) 470 #define IGB_FLAG_MAS_CAPABLE (1 << 11) 471 #define IGB_FLAG_MAS_ENABLE (1 << 12) 472 #define IGB_FLAG_HAS_MSIX (1 << 13) 473 #define IGB_FLAG_EEE (1 << 14) 474 475 /* Media Auto Sense */ 476 #define IGB_MAS_ENABLE_0 0X0001 477 #define IGB_MAS_ENABLE_1 0X0002 478 #define IGB_MAS_ENABLE_2 0X0004 479 #define IGB_MAS_ENABLE_3 0X0008 480 481 /* DMA Coalescing defines */ 482 #define IGB_MIN_TXPBSIZE 20408 483 #define IGB_TX_BUF_4096 4096 484 #define IGB_DMCTLX_DCFLUSH_DIS 0x80000000 /* Disable DMA Coal Flush */ 485 486 #define IGB_82576_TSYNC_SHIFT 19 487 #define IGB_TS_HDR_LEN 16 488 enum e1000_state_t { 489 __IGB_TESTING, 490 __IGB_RESETTING, 491 __IGB_DOWN, 492 __IGB_PTP_TX_IN_PROGRESS, 493 }; 494 495 enum igb_boards { 496 board_82575, 497 }; 498 499 extern char igb_driver_name[]; 500 extern char igb_driver_version[]; 501 502 int igb_up(struct igb_adapter *); 503 void igb_down(struct igb_adapter *); 504 void igb_reinit_locked(struct igb_adapter *); 505 void igb_reset(struct igb_adapter *); 506 int igb_reinit_queues(struct igb_adapter *); 507 void igb_write_rss_indir_tbl(struct igb_adapter *); 508 int igb_set_spd_dplx(struct igb_adapter *, u32, u8); 509 int igb_setup_tx_resources(struct igb_ring *); 510 int igb_setup_rx_resources(struct igb_ring *); 511 void igb_free_tx_resources(struct igb_ring *); 512 void igb_free_rx_resources(struct igb_ring *); 513 void igb_configure_tx_ring(struct igb_adapter *, struct igb_ring *); 514 void igb_configure_rx_ring(struct igb_adapter *, struct igb_ring *); 515 void igb_setup_tctl(struct igb_adapter *); 516 void igb_setup_rctl(struct igb_adapter *); 517 netdev_tx_t igb_xmit_frame_ring(struct sk_buff *, struct igb_ring *); 518 void igb_unmap_and_free_tx_resource(struct igb_ring *, struct igb_tx_buffer *); 519 void igb_alloc_rx_buffers(struct igb_ring *, u16); 520 void igb_update_stats(struct igb_adapter *, struct rtnl_link_stats64 *); 521 bool igb_has_link(struct igb_adapter *adapter); 522 void igb_set_ethtool_ops(struct net_device *); 523 void igb_power_up_link(struct igb_adapter *); 524 void igb_set_fw_version(struct igb_adapter *); 525 void igb_ptp_init(struct igb_adapter *adapter); 526 void igb_ptp_stop(struct igb_adapter *adapter); 527 void igb_ptp_reset(struct igb_adapter *adapter); 528 void igb_ptp_rx_hang(struct igb_adapter *adapter); 529 void igb_ptp_rx_rgtstamp(struct igb_q_vector *q_vector, struct sk_buff *skb); 530 void igb_ptp_rx_pktstamp(struct igb_q_vector *q_vector, unsigned char *va, 531 struct sk_buff *skb); 532 int igb_ptp_set_ts_config(struct net_device *netdev, struct ifreq *ifr); 533 int igb_ptp_get_ts_config(struct net_device *netdev, struct ifreq *ifr); 534 #ifdef CONFIG_IGB_HWMON 535 void igb_sysfs_exit(struct igb_adapter *adapter); 536 int igb_sysfs_init(struct igb_adapter *adapter); 537 #endif 538 static inline s32 igb_reset_phy(struct e1000_hw *hw) 539 { 540 if (hw->phy.ops.reset) 541 return hw->phy.ops.reset(hw); 542 543 return 0; 544 } 545 546 static inline s32 igb_read_phy_reg(struct e1000_hw *hw, u32 offset, u16 *data) 547 { 548 if (hw->phy.ops.read_reg) 549 return hw->phy.ops.read_reg(hw, offset, data); 550 551 return 0; 552 } 553 554 static inline s32 igb_write_phy_reg(struct e1000_hw *hw, u32 offset, u16 data) 555 { 556 if (hw->phy.ops.write_reg) 557 return hw->phy.ops.write_reg(hw, offset, data); 558 559 return 0; 560 } 561 562 static inline s32 igb_get_phy_info(struct e1000_hw *hw) 563 { 564 if (hw->phy.ops.get_phy_info) 565 return hw->phy.ops.get_phy_info(hw); 566 567 return 0; 568 } 569 570 static inline struct netdev_queue *txring_txq(const struct igb_ring *tx_ring) 571 { 572 return netdev_get_tx_queue(tx_ring->netdev, tx_ring->queue_index); 573 } 574 575 #endif /* _IGB_H_ */ 576