1 /* Intel PRO/1000 Linux driver 2 * Copyright(c) 1999 - 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 * The full GNU General Public License is included in this distribution in 14 * the file called "COPYING". 15 * 16 * Contact Information: 17 * Linux NICS <linux.nics@intel.com> 18 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 19 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 20 */ 21 22 /* Linux PRO/1000 Ethernet Driver main header file */ 23 24 #ifndef _E1000_H_ 25 #define _E1000_H_ 26 27 #include <linux/bitops.h> 28 #include <linux/types.h> 29 #include <linux/timer.h> 30 #include <linux/workqueue.h> 31 #include <linux/io.h> 32 #include <linux/netdevice.h> 33 #include <linux/pci.h> 34 #include <linux/pci-aspm.h> 35 #include <linux/crc32.h> 36 #include <linux/if_vlan.h> 37 #include <linux/timecounter.h> 38 #include <linux/net_tstamp.h> 39 #include <linux/ptp_clock_kernel.h> 40 #include <linux/ptp_classify.h> 41 #include <linux/mii.h> 42 #include <linux/mdio.h> 43 #include <linux/pm_qos.h> 44 #include "hw.h" 45 46 struct e1000_info; 47 48 #define e_dbg(format, arg...) \ 49 netdev_dbg(hw->adapter->netdev, format, ## arg) 50 #define e_err(format, arg...) \ 51 netdev_err(adapter->netdev, format, ## arg) 52 #define e_info(format, arg...) \ 53 netdev_info(adapter->netdev, format, ## arg) 54 #define e_warn(format, arg...) \ 55 netdev_warn(adapter->netdev, format, ## arg) 56 #define e_notice(format, arg...) \ 57 netdev_notice(adapter->netdev, format, ## arg) 58 59 /* Interrupt modes, as used by the IntMode parameter */ 60 #define E1000E_INT_MODE_LEGACY 0 61 #define E1000E_INT_MODE_MSI 1 62 #define E1000E_INT_MODE_MSIX 2 63 64 /* Tx/Rx descriptor defines */ 65 #define E1000_DEFAULT_TXD 256 66 #define E1000_MAX_TXD 4096 67 #define E1000_MIN_TXD 64 68 69 #define E1000_DEFAULT_RXD 256 70 #define E1000_MAX_RXD 4096 71 #define E1000_MIN_RXD 64 72 73 #define E1000_MIN_ITR_USECS 10 /* 100000 irq/sec */ 74 #define E1000_MAX_ITR_USECS 10000 /* 100 irq/sec */ 75 76 #define E1000_FC_PAUSE_TIME 0x0680 /* 858 usec */ 77 78 /* How many Tx Descriptors do we need to call netif_wake_queue ? */ 79 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 80 #define E1000_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 81 82 #define AUTO_ALL_MODES 0 83 #define E1000_EEPROM_APME 0x0400 84 85 #define E1000_MNG_VLAN_NONE (-1) 86 87 #define DEFAULT_JUMBO 9234 88 89 /* Time to wait before putting the device into D3 if there's no link (in ms). */ 90 #define LINK_TIMEOUT 100 91 92 /* Count for polling __E1000_RESET condition every 10-20msec. 93 * Experimentation has shown the reset can take approximately 210msec. 94 */ 95 #define E1000_CHECK_RESET_COUNT 25 96 97 #define DEFAULT_RDTR 0 98 #define DEFAULT_RADV 8 99 #define BURST_RDTR 0x20 100 #define BURST_RADV 0x20 101 102 /* in the case of WTHRESH, it appears at least the 82571/2 hardware 103 * writes back 4 descriptors when WTHRESH=5, and 3 descriptors when 104 * WTHRESH=4, so a setting of 5 gives the most efficient bus 105 * utilization but to avoid possible Tx stalls, set it to 1 106 */ 107 #define E1000_TXDCTL_DMA_BURST_ENABLE \ 108 (E1000_TXDCTL_GRAN | /* set descriptor granularity */ \ 109 E1000_TXDCTL_COUNT_DESC | \ 110 (1 << 16) | /* wthresh must be +1 more than desired */\ 111 (1 << 8) | /* hthresh */ \ 112 0x1f) /* pthresh */ 113 114 #define E1000_RXDCTL_DMA_BURST_ENABLE \ 115 (0x01000000 | /* set descriptor granularity */ \ 116 (4 << 16) | /* set writeback threshold */ \ 117 (4 << 8) | /* set prefetch threshold */ \ 118 0x20) /* set hthresh */ 119 120 #define E1000_TIDV_FPD (1 << 31) 121 #define E1000_RDTR_FPD (1 << 31) 122 123 enum e1000_boards { 124 board_82571, 125 board_82572, 126 board_82573, 127 board_82574, 128 board_82583, 129 board_80003es2lan, 130 board_ich8lan, 131 board_ich9lan, 132 board_ich10lan, 133 board_pchlan, 134 board_pch2lan, 135 board_pch_lpt, 136 board_pch_spt 137 }; 138 139 struct e1000_ps_page { 140 struct page *page; 141 u64 dma; /* must be u64 - written to hw */ 142 }; 143 144 /* wrappers around a pointer to a socket buffer, 145 * so a DMA handle can be stored along with the buffer 146 */ 147 struct e1000_buffer { 148 dma_addr_t dma; 149 struct sk_buff *skb; 150 union { 151 /* Tx */ 152 struct { 153 unsigned long time_stamp; 154 u16 length; 155 u16 next_to_watch; 156 unsigned int segs; 157 unsigned int bytecount; 158 u16 mapped_as_page; 159 }; 160 /* Rx */ 161 struct { 162 /* arrays of page information for packet split */ 163 struct e1000_ps_page *ps_pages; 164 struct page *page; 165 }; 166 }; 167 }; 168 169 struct e1000_ring { 170 struct e1000_adapter *adapter; /* back pointer to adapter */ 171 void *desc; /* pointer to ring memory */ 172 dma_addr_t dma; /* phys address of ring */ 173 unsigned int size; /* length of ring in bytes */ 174 unsigned int count; /* number of desc. in ring */ 175 176 u16 next_to_use; 177 u16 next_to_clean; 178 179 void __iomem *head; 180 void __iomem *tail; 181 182 /* array of buffer information structs */ 183 struct e1000_buffer *buffer_info; 184 185 char name[IFNAMSIZ + 5]; 186 u32 ims_val; 187 u32 itr_val; 188 void __iomem *itr_register; 189 int set_itr; 190 191 struct sk_buff *rx_skb_top; 192 }; 193 194 /* PHY register snapshot values */ 195 struct e1000_phy_regs { 196 u16 bmcr; /* basic mode control register */ 197 u16 bmsr; /* basic mode status register */ 198 u16 advertise; /* auto-negotiation advertisement */ 199 u16 lpa; /* link partner ability register */ 200 u16 expansion; /* auto-negotiation expansion reg */ 201 u16 ctrl1000; /* 1000BASE-T control register */ 202 u16 stat1000; /* 1000BASE-T status register */ 203 u16 estatus; /* extended status register */ 204 }; 205 206 /* board specific private data structure */ 207 struct e1000_adapter { 208 struct timer_list watchdog_timer; 209 struct timer_list phy_info_timer; 210 struct timer_list blink_timer; 211 212 struct work_struct reset_task; 213 struct work_struct watchdog_task; 214 215 const struct e1000_info *ei; 216 217 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 218 u32 bd_number; 219 u32 rx_buffer_len; 220 u16 mng_vlan_id; 221 u16 link_speed; 222 u16 link_duplex; 223 u16 eeprom_vers; 224 225 /* track device up/down/testing state */ 226 unsigned long state; 227 228 /* Interrupt Throttle Rate */ 229 u32 itr; 230 u32 itr_setting; 231 u16 tx_itr; 232 u16 rx_itr; 233 234 /* Tx - one ring per active queue */ 235 struct e1000_ring *tx_ring ____cacheline_aligned_in_smp; 236 u32 tx_fifo_limit; 237 238 struct napi_struct napi; 239 240 unsigned int uncorr_errors; /* uncorrectable ECC errors */ 241 unsigned int corr_errors; /* correctable ECC errors */ 242 unsigned int restart_queue; 243 u32 txd_cmd; 244 245 bool detect_tx_hung; 246 bool tx_hang_recheck; 247 u8 tx_timeout_factor; 248 249 u32 tx_int_delay; 250 u32 tx_abs_int_delay; 251 252 unsigned int total_tx_bytes; 253 unsigned int total_tx_packets; 254 unsigned int total_rx_bytes; 255 unsigned int total_rx_packets; 256 257 /* Tx stats */ 258 u64 tpt_old; 259 u64 colc_old; 260 u32 gotc; 261 u64 gotc_old; 262 u32 tx_timeout_count; 263 u32 tx_fifo_head; 264 u32 tx_head_addr; 265 u32 tx_fifo_size; 266 u32 tx_dma_failed; 267 u32 tx_hwtstamp_timeouts; 268 269 /* Rx */ 270 bool (*clean_rx)(struct e1000_ring *ring, int *work_done, 271 int work_to_do) ____cacheline_aligned_in_smp; 272 void (*alloc_rx_buf)(struct e1000_ring *ring, int cleaned_count, 273 gfp_t gfp); 274 struct e1000_ring *rx_ring; 275 276 u32 rx_int_delay; 277 u32 rx_abs_int_delay; 278 279 /* Rx stats */ 280 u64 hw_csum_err; 281 u64 hw_csum_good; 282 u64 rx_hdr_split; 283 u32 gorc; 284 u64 gorc_old; 285 u32 alloc_rx_buff_failed; 286 u32 rx_dma_failed; 287 u32 rx_hwtstamp_cleared; 288 289 unsigned int rx_ps_pages; 290 u16 rx_ps_bsize0; 291 u32 max_frame_size; 292 u32 min_frame_size; 293 294 /* OS defined structs */ 295 struct net_device *netdev; 296 struct pci_dev *pdev; 297 298 /* structs defined in e1000_hw.h */ 299 struct e1000_hw hw; 300 301 spinlock_t stats64_lock; /* protects statistics counters */ 302 struct e1000_hw_stats stats; 303 struct e1000_phy_info phy_info; 304 struct e1000_phy_stats phy_stats; 305 306 /* Snapshot of PHY registers */ 307 struct e1000_phy_regs phy_regs; 308 309 struct e1000_ring test_tx_ring; 310 struct e1000_ring test_rx_ring; 311 u32 test_icr; 312 313 u32 msg_enable; 314 unsigned int num_vectors; 315 struct msix_entry *msix_entries; 316 int int_mode; 317 u32 eiac_mask; 318 319 u32 eeprom_wol; 320 u32 wol; 321 u32 pba; 322 u32 max_hw_frame_size; 323 324 bool fc_autoneg; 325 326 unsigned int flags; 327 unsigned int flags2; 328 struct work_struct downshift_task; 329 struct work_struct update_phy_task; 330 struct work_struct print_hang_task; 331 332 int phy_hang_count; 333 334 u16 tx_ring_count; 335 u16 rx_ring_count; 336 337 struct hwtstamp_config hwtstamp_config; 338 struct delayed_work systim_overflow_work; 339 struct sk_buff *tx_hwtstamp_skb; 340 unsigned long tx_hwtstamp_start; 341 struct work_struct tx_hwtstamp_work; 342 spinlock_t systim_lock; /* protects SYSTIML/H regsters */ 343 struct cyclecounter cc; 344 struct timecounter tc; 345 struct ptp_clock *ptp_clock; 346 struct ptp_clock_info ptp_clock_info; 347 struct pm_qos_request pm_qos_req; 348 349 u16 eee_advert; 350 }; 351 352 struct e1000_info { 353 enum e1000_mac_type mac; 354 unsigned int flags; 355 unsigned int flags2; 356 u32 pba; 357 u32 max_hw_frame_size; 358 s32 (*get_variants)(struct e1000_adapter *); 359 const struct e1000_mac_operations *mac_ops; 360 const struct e1000_phy_operations *phy_ops; 361 const struct e1000_nvm_operations *nvm_ops; 362 }; 363 364 s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca); 365 366 /* The system time is maintained by a 64-bit counter comprised of the 32-bit 367 * SYSTIMH and SYSTIML registers. How the counter increments (and therefore 368 * its resolution) is based on the contents of the TIMINCA register - it 369 * increments every incperiod (bits 31:24) clock ticks by incvalue (bits 23:0). 370 * For the best accuracy, the incperiod should be as small as possible. The 371 * incvalue is scaled by a factor as large as possible (while still fitting 372 * in bits 23:0) so that relatively small clock corrections can be made. 373 * 374 * As a result, a shift of INCVALUE_SHIFT_n is used to fit a value of 375 * INCVALUE_n into the TIMINCA register allowing 32+8+(24-INCVALUE_SHIFT_n) 376 * bits to count nanoseconds leaving the rest for fractional nonseconds. 377 */ 378 #define INCVALUE_96MHz 125 379 #define INCVALUE_SHIFT_96MHz 17 380 #define INCPERIOD_SHIFT_96MHz 2 381 #define INCPERIOD_96MHz (12 >> INCPERIOD_SHIFT_96MHz) 382 383 #define INCVALUE_25MHz 40 384 #define INCVALUE_SHIFT_25MHz 18 385 #define INCPERIOD_25MHz 1 386 387 /* Another drawback of scaling the incvalue by a large factor is the 388 * 64-bit SYSTIM register overflows more quickly. This is dealt with 389 * by simply reading the clock before it overflows. 390 * 391 * Clock ns bits Overflows after 392 * ~~~~~~ ~~~~~~~ ~~~~~~~~~~~~~~~ 393 * 96MHz 47-bit 2^(47-INCPERIOD_SHIFT_96MHz) / 10^9 / 3600 = 9.77 hrs 394 * 25MHz 46-bit 2^46 / 10^9 / 3600 = 19.55 hours 395 */ 396 #define E1000_SYSTIM_OVERFLOW_PERIOD (HZ * 60 * 60 * 4) 397 #define E1000_MAX_82574_SYSTIM_REREADS 50 398 #define E1000_82574_SYSTIM_EPSILON (1ULL << 35ULL) 399 400 /* hardware capability, feature, and workaround flags */ 401 #define FLAG_HAS_AMT (1 << 0) 402 #define FLAG_HAS_FLASH (1 << 1) 403 #define FLAG_HAS_HW_VLAN_FILTER (1 << 2) 404 #define FLAG_HAS_WOL (1 << 3) 405 /* reserved bit4 */ 406 #define FLAG_HAS_CTRLEXT_ON_LOAD (1 << 5) 407 #define FLAG_HAS_SWSM_ON_LOAD (1 << 6) 408 #define FLAG_HAS_JUMBO_FRAMES (1 << 7) 409 #define FLAG_READ_ONLY_NVM (1 << 8) 410 #define FLAG_IS_ICH (1 << 9) 411 #define FLAG_HAS_MSIX (1 << 10) 412 #define FLAG_HAS_SMART_POWER_DOWN (1 << 11) 413 #define FLAG_IS_QUAD_PORT_A (1 << 12) 414 #define FLAG_IS_QUAD_PORT (1 << 13) 415 #define FLAG_HAS_HW_TIMESTAMP (1 << 14) 416 #define FLAG_APME_IN_WUC (1 << 15) 417 #define FLAG_APME_IN_CTRL3 (1 << 16) 418 #define FLAG_APME_CHECK_PORT_B (1 << 17) 419 #define FLAG_DISABLE_FC_PAUSE_TIME (1 << 18) 420 #define FLAG_NO_WAKE_UCAST (1 << 19) 421 #define FLAG_MNG_PT_ENABLED (1 << 20) 422 #define FLAG_RESET_OVERWRITES_LAA (1 << 21) 423 #define FLAG_TARC_SPEED_MODE_BIT (1 << 22) 424 #define FLAG_TARC_SET_BIT_ZERO (1 << 23) 425 #define FLAG_RX_NEEDS_RESTART (1 << 24) 426 #define FLAG_LSC_GIG_SPEED_DROP (1 << 25) 427 #define FLAG_SMART_POWER_DOWN (1 << 26) 428 #define FLAG_MSI_ENABLED (1 << 27) 429 /* reserved (1 << 28) */ 430 #define FLAG_TSO_FORCE (1 << 29) 431 #define FLAG_RESTART_NOW (1 << 30) 432 #define FLAG_MSI_TEST_FAILED (1 << 31) 433 434 #define FLAG2_CRC_STRIPPING (1 << 0) 435 #define FLAG2_HAS_PHY_WAKEUP (1 << 1) 436 #define FLAG2_IS_DISCARDING (1 << 2) 437 #define FLAG2_DISABLE_ASPM_L1 (1 << 3) 438 #define FLAG2_HAS_PHY_STATS (1 << 4) 439 #define FLAG2_HAS_EEE (1 << 5) 440 #define FLAG2_DMA_BURST (1 << 6) 441 #define FLAG2_DISABLE_ASPM_L0S (1 << 7) 442 #define FLAG2_DISABLE_AIM (1 << 8) 443 #define FLAG2_CHECK_PHY_HANG (1 << 9) 444 #define FLAG2_NO_DISABLE_RX (1 << 10) 445 #define FLAG2_PCIM2PCI_ARBITER_WA (1 << 11) 446 #define FLAG2_DFLT_CRC_STRIPPING (1 << 12) 447 #define FLAG2_CHECK_RX_HWTSTAMP (1 << 13) 448 449 #define E1000_RX_DESC_PS(R, i) \ 450 (&(((union e1000_rx_desc_packet_split *)((R).desc))[i])) 451 #define E1000_RX_DESC_EXT(R, i) \ 452 (&(((union e1000_rx_desc_extended *)((R).desc))[i])) 453 #define E1000_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i])) 454 #define E1000_TX_DESC(R, i) E1000_GET_DESC(R, i, e1000_tx_desc) 455 #define E1000_CONTEXT_DESC(R, i) E1000_GET_DESC(R, i, e1000_context_desc) 456 457 enum e1000_state_t { 458 __E1000_TESTING, 459 __E1000_RESETTING, 460 __E1000_ACCESS_SHARED_RESOURCE, 461 __E1000_DOWN 462 }; 463 464 enum latency_range { 465 lowest_latency = 0, 466 low_latency = 1, 467 bulk_latency = 2, 468 latency_invalid = 255 469 }; 470 471 extern char e1000e_driver_name[]; 472 extern const char e1000e_driver_version[]; 473 474 void e1000e_check_options(struct e1000_adapter *adapter); 475 void e1000e_set_ethtool_ops(struct net_device *netdev); 476 477 int e1000e_up(struct e1000_adapter *adapter); 478 void e1000e_down(struct e1000_adapter *adapter, bool reset); 479 void e1000e_reinit_locked(struct e1000_adapter *adapter); 480 void e1000e_reset(struct e1000_adapter *adapter); 481 void e1000e_power_up_phy(struct e1000_adapter *adapter); 482 int e1000e_setup_rx_resources(struct e1000_ring *ring); 483 int e1000e_setup_tx_resources(struct e1000_ring *ring); 484 void e1000e_free_rx_resources(struct e1000_ring *ring); 485 void e1000e_free_tx_resources(struct e1000_ring *ring); 486 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev, 487 struct rtnl_link_stats64 *stats); 488 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter); 489 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter); 490 void e1000e_get_hw_control(struct e1000_adapter *adapter); 491 void e1000e_release_hw_control(struct e1000_adapter *adapter); 492 void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr); 493 494 extern unsigned int copybreak; 495 496 extern const struct e1000_info e1000_82571_info; 497 extern const struct e1000_info e1000_82572_info; 498 extern const struct e1000_info e1000_82573_info; 499 extern const struct e1000_info e1000_82574_info; 500 extern const struct e1000_info e1000_82583_info; 501 extern const struct e1000_info e1000_ich8_info; 502 extern const struct e1000_info e1000_ich9_info; 503 extern const struct e1000_info e1000_ich10_info; 504 extern const struct e1000_info e1000_pch_info; 505 extern const struct e1000_info e1000_pch2_info; 506 extern const struct e1000_info e1000_pch_lpt_info; 507 extern const struct e1000_info e1000_pch_spt_info; 508 extern const struct e1000_info e1000_es2_info; 509 510 void e1000e_ptp_init(struct e1000_adapter *adapter); 511 void e1000e_ptp_remove(struct e1000_adapter *adapter); 512 513 static inline s32 e1000_phy_hw_reset(struct e1000_hw *hw) 514 { 515 return hw->phy.ops.reset(hw); 516 } 517 518 static inline s32 e1e_rphy(struct e1000_hw *hw, u32 offset, u16 *data) 519 { 520 return hw->phy.ops.read_reg(hw, offset, data); 521 } 522 523 static inline s32 e1e_rphy_locked(struct e1000_hw *hw, u32 offset, u16 *data) 524 { 525 return hw->phy.ops.read_reg_locked(hw, offset, data); 526 } 527 528 static inline s32 e1e_wphy(struct e1000_hw *hw, u32 offset, u16 data) 529 { 530 return hw->phy.ops.write_reg(hw, offset, data); 531 } 532 533 static inline s32 e1e_wphy_locked(struct e1000_hw *hw, u32 offset, u16 data) 534 { 535 return hw->phy.ops.write_reg_locked(hw, offset, data); 536 } 537 538 void e1000e_reload_nvm_generic(struct e1000_hw *hw); 539 540 static inline s32 e1000e_read_mac_addr(struct e1000_hw *hw) 541 { 542 if (hw->mac.ops.read_mac_addr) 543 return hw->mac.ops.read_mac_addr(hw); 544 545 return e1000_read_mac_addr_generic(hw); 546 } 547 548 static inline s32 e1000_validate_nvm_checksum(struct e1000_hw *hw) 549 { 550 return hw->nvm.ops.validate(hw); 551 } 552 553 static inline s32 e1000e_update_nvm_checksum(struct e1000_hw *hw) 554 { 555 return hw->nvm.ops.update(hw); 556 } 557 558 static inline s32 e1000_read_nvm(struct e1000_hw *hw, u16 offset, u16 words, 559 u16 *data) 560 { 561 return hw->nvm.ops.read(hw, offset, words, data); 562 } 563 564 static inline s32 e1000_write_nvm(struct e1000_hw *hw, u16 offset, u16 words, 565 u16 *data) 566 { 567 return hw->nvm.ops.write(hw, offset, words, data); 568 } 569 570 static inline s32 e1000_get_phy_info(struct e1000_hw *hw) 571 { 572 return hw->phy.ops.get_info(hw); 573 } 574 575 static inline u32 __er32(struct e1000_hw *hw, unsigned long reg) 576 { 577 return readl(hw->hw_addr + reg); 578 } 579 580 #define er32(reg) __er32(hw, E1000_##reg) 581 582 s32 __ew32_prepare(struct e1000_hw *hw); 583 void __ew32(struct e1000_hw *hw, unsigned long reg, u32 val); 584 585 #define ew32(reg, val) __ew32(hw, E1000_##reg, (val)) 586 587 #define e1e_flush() er32(STATUS) 588 589 #define E1000_WRITE_REG_ARRAY(a, reg, offset, value) \ 590 (__ew32((a), (reg + ((offset) << 2)), (value))) 591 592 #define E1000_READ_REG_ARRAY(a, reg, offset) \ 593 (readl((a)->hw_addr + reg + ((offset) << 2))) 594 595 #endif /* _E1000_H_ */ 596