Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/e1000/if_em.h
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1 /****************************************************************************** 2 3 Copyright (c) 2001-2011, Intel Corporation 4 All rights reserved. 5 6 Redistribution and use in source and binary forms, with or without 7 modification, are permitted provided that the following conditions are met: 8 9 1. Redistributions of source code must retain the above copyright notice, 10 this list of conditions and the following disclaimer. 11 12 2. Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in the 14 documentation and/or other materials provided with the distribution. 15 16 3. Neither the name of the Intel Corporation nor the names of its 17 contributors may be used to endorse or promote products derived from 18 this software without specific prior written permission. 19 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 POSSIBILITY OF SUCH DAMAGE. 31 32 ******************************************************************************/ 33 /*$FreeBSD$*/ 34 35 36 #ifndef _EM_H_DEFINED_ 37 #define _EM_H_DEFINED_ 38 39 40 /* Tunables */ 41 42 /* 43 * EM_TXD: Maximum number of Transmit Descriptors 44 * Valid Range: 80-256 for 82542 and 82543-based adapters 45 * 80-4096 for others 46 * Default Value: 256 47 * This value is the number of transmit descriptors allocated by the driver. 48 * Increasing this value allows the driver to queue more transmits. Each 49 * descriptor is 16 bytes. 50 * Since TDLEN should be multiple of 128bytes, the number of transmit 51 * desscriptors should meet the following condition. 52 * (num_tx_desc * sizeof(struct e1000_tx_desc)) % 128 == 0 53 */ 54 #define EM_MIN_TXD 80 55 #define EM_MAX_TXD 4096 56 #define EM_DEFAULT_TXD 1024 57 58 /* 59 * EM_RXD - Maximum number of receive Descriptors 60 * Valid Range: 80-256 for 82542 and 82543-based adapters 61 * 80-4096 for others 62 * Default Value: 256 63 * This value is the number of receive descriptors allocated by the driver. 64 * Increasing this value allows the driver to buffer more incoming packets. 65 * Each descriptor is 16 bytes. A receive buffer is also allocated for each 66 * descriptor. The maximum MTU size is 16110. 67 * Since TDLEN should be multiple of 128bytes, the number of transmit 68 * desscriptors should meet the following condition. 69 * (num_tx_desc * sizeof(struct e1000_tx_desc)) % 128 == 0 70 */ 71 #define EM_MIN_RXD 80 72 #define EM_MAX_RXD 4096 73 #define EM_DEFAULT_RXD 1024 74 75 /* 76 * EM_TIDV - Transmit Interrupt Delay Value 77 * Valid Range: 0-65535 (0=off) 78 * Default Value: 64 79 * This value delays the generation of transmit interrupts in units of 80 * 1.024 microseconds. Transmit interrupt reduction can improve CPU 81 * efficiency if properly tuned for specific network traffic. If the 82 * system is reporting dropped transmits, this value may be set too high 83 * causing the driver to run out of available transmit descriptors. 84 */ 85 #define EM_TIDV 64 86 87 /* 88 * EM_TADV - Transmit Absolute Interrupt Delay Value 89 * (Not valid for 82542/82543/82544) 90 * Valid Range: 0-65535 (0=off) 91 * Default Value: 64 92 * This value, in units of 1.024 microseconds, limits the delay in which a 93 * transmit interrupt is generated. Useful only if EM_TIDV is non-zero, 94 * this value ensures that an interrupt is generated after the initial 95 * packet is sent on the wire within the set amount of time. Proper tuning, 96 * along with EM_TIDV, may improve traffic throughput in specific 97 * network conditions. 98 */ 99 #define EM_TADV 64 100 101 /* 102 * EM_RDTR - Receive Interrupt Delay Timer (Packet Timer) 103 * Valid Range: 0-65535 (0=off) 104 * Default Value: 0 105 * This value delays the generation of receive interrupts in units of 1.024 106 * microseconds. Receive interrupt reduction can improve CPU efficiency if 107 * properly tuned for specific network traffic. Increasing this value adds 108 * extra latency to frame reception and can end up decreasing the throughput 109 * of TCP traffic. If the system is reporting dropped receives, this value 110 * may be set too high, causing the driver to run out of available receive 111 * descriptors. 112 * 113 * CAUTION: When setting EM_RDTR to a value other than 0, adapters 114 * may hang (stop transmitting) under certain network conditions. 115 * If this occurs a WATCHDOG message is logged in the system 116 * event log. In addition, the controller is automatically reset, 117 * restoring the network connection. To eliminate the potential 118 * for the hang ensure that EM_RDTR is set to 0. 119 */ 120 #define EM_RDTR 0 121 122 /* 123 * Receive Interrupt Absolute Delay Timer (Not valid for 82542/82543/82544) 124 * Valid Range: 0-65535 (0=off) 125 * Default Value: 64 126 * This value, in units of 1.024 microseconds, limits the delay in which a 127 * receive interrupt is generated. Useful only if EM_RDTR is non-zero, 128 * this value ensures that an interrupt is generated after the initial 129 * packet is received within the set amount of time. Proper tuning, 130 * along with EM_RDTR, may improve traffic throughput in specific network 131 * conditions. 132 */ 133 #define EM_RADV 64 134 135 /* 136 * This parameter controls the max duration of transmit watchdog. 137 */ 138 #define EM_WATCHDOG (10 * hz) 139 140 /* 141 * This parameter controls when the driver calls the routine to reclaim 142 * transmit descriptors. 143 */ 144 #define EM_TX_CLEANUP_THRESHOLD (adapter->num_tx_desc / 8) 145 146 /* 147 * This parameter controls whether or not autonegotation is enabled. 148 * 0 - Disable autonegotiation 149 * 1 - Enable autonegotiation 150 */ 151 #define DO_AUTO_NEG 1 152 153 /* 154 * This parameter control whether or not the driver will wait for 155 * autonegotiation to complete. 156 * 1 - Wait for autonegotiation to complete 157 * 0 - Don't wait for autonegotiation to complete 158 */ 159 #define WAIT_FOR_AUTO_NEG_DEFAULT 0 160 161 /* Tunables -- End */ 162 163 #define AUTONEG_ADV_DEFAULT (ADVERTISE_10_HALF | ADVERTISE_10_FULL | \ 164 ADVERTISE_100_HALF | ADVERTISE_100_FULL | \ 165 ADVERTISE_1000_FULL) 166 167 #define AUTO_ALL_MODES 0 168 169 /* PHY master/slave setting */ 170 #define EM_MASTER_SLAVE e1000_ms_hw_default 171 172 /* 173 * Micellaneous constants 174 */ 175 #define EM_VENDOR_ID 0x8086 176 #define EM_FLASH 0x0014 177 178 #define EM_JUMBO_PBA 0x00000028 179 #define EM_DEFAULT_PBA 0x00000030 180 #define EM_SMARTSPEED_DOWNSHIFT 3 181 #define EM_SMARTSPEED_MAX 15 182 #define EM_MAX_LOOP 10 183 184 #define MAX_NUM_MULTICAST_ADDRESSES 128 185 #define PCI_ANY_ID (~0U) 186 #define ETHER_ALIGN 2 187 #define EM_FC_PAUSE_TIME 0x0680 188 #define EM_EEPROM_APME 0x400; 189 #define EM_82544_APME 0x0004; 190 191 #define EM_QUEUE_IDLE 0 192 #define EM_QUEUE_WORKING 1 193 #define EM_QUEUE_HUNG 2 194 195 /* 196 * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be 197 * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary. This will 198 * also optimize cache line size effect. H/W supports up to cache line size 128. 199 */ 200 #define EM_DBA_ALIGN 128 201 202 #define SPEED_MODE_BIT (1<<21) /* On PCI-E MACs only */ 203 204 /* PCI Config defines */ 205 #define EM_BAR_TYPE(v) ((v) & EM_BAR_TYPE_MASK) 206 #define EM_BAR_TYPE_MASK 0x00000001 207 #define EM_BAR_TYPE_MMEM 0x00000000 208 #define EM_BAR_TYPE_FLASH 0x0014 209 #define EM_BAR_MEM_TYPE(v) ((v) & EM_BAR_MEM_TYPE_MASK) 210 #define EM_BAR_MEM_TYPE_MASK 0x00000006 211 #define EM_BAR_MEM_TYPE_32BIT 0x00000000 212 #define EM_BAR_MEM_TYPE_64BIT 0x00000004 213 #define EM_MSIX_BAR 3 /* On 82575 */ 214 215 /* More backward compatibility */ 216 #if __FreeBSD_version < 900000 217 #define SYSCTL_ADD_UQUAD SYSCTL_ADD_QUAD 218 #endif 219 220 /* Defines for printing debug information */ 221 #define DEBUG_INIT 0 222 #define DEBUG_IOCTL 0 223 #define DEBUG_HW 0 224 225 #define INIT_DEBUGOUT(S) if (DEBUG_INIT) printf(S "\n") 226 #define INIT_DEBUGOUT1(S, A) if (DEBUG_INIT) printf(S "\n", A) 227 #define INIT_DEBUGOUT2(S, A, B) if (DEBUG_INIT) printf(S "\n", A, B) 228 #define IOCTL_DEBUGOUT(S) if (DEBUG_IOCTL) printf(S "\n") 229 #define IOCTL_DEBUGOUT1(S, A) if (DEBUG_IOCTL) printf(S "\n", A) 230 #define IOCTL_DEBUGOUT2(S, A, B) if (DEBUG_IOCTL) printf(S "\n", A, B) 231 #define HW_DEBUGOUT(S) if (DEBUG_HW) printf(S "\n") 232 #define HW_DEBUGOUT1(S, A) if (DEBUG_HW) printf(S "\n", A) 233 #define HW_DEBUGOUT2(S, A, B) if (DEBUG_HW) printf(S "\n", A, B) 234 235 #define EM_MAX_SCATTER 32 236 #define EM_VFTA_SIZE 128 237 #define EM_TSO_SIZE (65535 + sizeof(struct ether_vlan_header)) 238 #define EM_TSO_SEG_SIZE 4096 /* Max dma segment size */ 239 #define EM_MSIX_MASK 0x01F00000 /* For 82574 use */ 240 #define EM_MSIX_LINK 0x01000000 /* For 82574 use */ 241 #define ETH_ZLEN 60 242 #define ETH_ADDR_LEN 6 243 #define CSUM_OFFLOAD 7 /* Offload bits in mbuf flag */ 244 245 /* 246 * 82574 has a nonstandard address for EIAC 247 * and since its only used in MSIX, and in 248 * the em driver only 82574 uses MSIX we can 249 * solve it just using this define. 250 */ 251 #define EM_EIAC 0x000DC 252 253 /* 254 * Bus dma allocation structure used by 255 * e1000_dma_malloc and e1000_dma_free. 256 */ 257 struct em_dma_alloc { 258 bus_addr_t dma_paddr; 259 caddr_t dma_vaddr; 260 bus_dma_tag_t dma_tag; 261 bus_dmamap_t dma_map; 262 bus_dma_segment_t dma_seg; 263 int dma_nseg; 264 }; 265 266 struct adapter; 267 268 struct em_int_delay_info { 269 struct adapter *adapter; /* Back-pointer to the adapter struct */ 270 int offset; /* Register offset to read/write */ 271 int value; /* Current value in usecs */ 272 }; 273 274 /* 275 * The transmit ring, one per tx queue 276 */ 277 struct tx_ring { 278 struct adapter *adapter; 279 struct mtx tx_mtx; 280 char mtx_name[16]; 281 u32 me; 282 u32 msix; 283 u32 ims; 284 int queue_status; 285 int watchdog_time; 286 struct em_dma_alloc txdma; 287 struct e1000_tx_desc *tx_base; 288 struct task tx_task; 289 struct taskqueue *tq; 290 u32 next_avail_desc; 291 u32 next_to_clean; 292 struct em_buffer *tx_buffers; 293 volatile u16 tx_avail; 294 u32 tx_tso; /* last tx was tso */ 295 u16 last_hw_offload; 296 u8 last_hw_ipcso; 297 u8 last_hw_ipcss; 298 u8 last_hw_tucso; 299 u8 last_hw_tucss; 300 #if __FreeBSD_version >= 800000 301 struct buf_ring *br; 302 #endif 303 /* Interrupt resources */ 304 bus_dma_tag_t txtag; 305 void *tag; 306 struct resource *res; 307 unsigned long tx_irq; 308 unsigned long no_desc_avail; 309 }; 310 311 /* 312 * The Receive ring, one per rx queue 313 */ 314 struct rx_ring { 315 struct adapter *adapter; 316 u32 me; 317 u32 msix; 318 u32 ims; 319 struct mtx rx_mtx; 320 char mtx_name[16]; 321 u32 payload; 322 struct task rx_task; 323 struct taskqueue *tq; 324 struct e1000_rx_desc *rx_base; 325 struct em_dma_alloc rxdma; 326 u32 next_to_refresh; 327 u32 next_to_check; 328 struct em_buffer *rx_buffers; 329 struct mbuf *fmp; 330 struct mbuf *lmp; 331 332 /* Interrupt resources */ 333 void *tag; 334 struct resource *res; 335 bus_dma_tag_t rxtag; 336 bool discard; 337 338 /* Soft stats */ 339 unsigned long rx_irq; 340 unsigned long rx_discarded; 341 unsigned long rx_packets; 342 unsigned long rx_bytes; 343 }; 344 345 346 /* Our adapter structure */ 347 struct adapter { 348 struct ifnet *ifp; 349 struct e1000_hw hw; 350 351 /* FreeBSD operating-system-specific structures. */ 352 struct e1000_osdep osdep; 353 struct device *dev; 354 struct cdev *led_dev; 355 356 struct resource *memory; 357 struct resource *flash; 358 struct resource *msix_mem; 359 360 struct resource *res; 361 void *tag; 362 u32 linkvec; 363 u32 ivars; 364 365 struct ifmedia media; 366 struct callout timer; 367 int msix; 368 int if_flags; 369 int max_frame_size; 370 int min_frame_size; 371 int pause_frames; 372 struct mtx core_mtx; 373 int em_insert_vlan_header; 374 u32 ims; 375 bool in_detach; 376 377 /* Task for FAST handling */ 378 struct task link_task; 379 struct task que_task; 380 struct taskqueue *tq; /* private task queue */ 381 382 eventhandler_tag vlan_attach; 383 eventhandler_tag vlan_detach; 384 385 u16 num_vlans; 386 u16 num_queues; 387 388 /* 389 * Transmit rings: 390 * Allocated at run time, an array of rings. 391 */ 392 struct tx_ring *tx_rings; 393 int num_tx_desc; 394 u32 txd_cmd; 395 396 /* 397 * Receive rings: 398 * Allocated at run time, an array of rings. 399 */ 400 struct rx_ring *rx_rings; 401 int num_rx_desc; 402 u32 rx_process_limit; 403 u32 rx_mbuf_sz; 404 405 /* Management and WOL features */ 406 u32 wol; 407 bool has_manage; 408 bool has_amt; 409 410 /* Multicast array memory */ 411 u8 *mta; 412 413 /* 414 ** Shadow VFTA table, this is needed because 415 ** the real vlan filter table gets cleared during 416 ** a soft reset and the driver needs to be able 417 ** to repopulate it. 418 */ 419 u32 shadow_vfta[EM_VFTA_SIZE]; 420 421 /* Info about the interface */ 422 u16 link_active; 423 u16 fc; 424 u16 link_speed; 425 u16 link_duplex; 426 u32 smartspeed; 427 428 struct em_int_delay_info tx_int_delay; 429 struct em_int_delay_info tx_abs_int_delay; 430 struct em_int_delay_info rx_int_delay; 431 struct em_int_delay_info rx_abs_int_delay; 432 struct em_int_delay_info tx_itr; 433 434 /* Misc stats maintained by the driver */ 435 unsigned long dropped_pkts; 436 unsigned long mbuf_alloc_failed; 437 unsigned long mbuf_cluster_failed; 438 unsigned long no_tx_map_avail; 439 unsigned long no_tx_dma_setup; 440 unsigned long rx_overruns; 441 unsigned long watchdog_events; 442 unsigned long link_irq; 443 444 struct e1000_hw_stats stats; 445 }; 446 447 /******************************************************************************** 448 * vendor_info_array 449 * 450 * This array contains the list of Subvendor/Subdevice IDs on which the driver 451 * should load. 452 * 453 ********************************************************************************/ 454 typedef struct _em_vendor_info_t { 455 unsigned int vendor_id; 456 unsigned int device_id; 457 unsigned int subvendor_id; 458 unsigned int subdevice_id; 459 unsigned int index; 460 } em_vendor_info_t; 461 462 struct em_buffer { 463 int next_eop; /* Index of the desc to watch */ 464 struct mbuf *m_head; 465 bus_dmamap_t map; /* bus_dma map for packet */ 466 }; 467 468 469 /* 470 ** Find the number of unrefreshed RX descriptors 471 */ 472 static inline u16 473 e1000_rx_unrefreshed(struct rx_ring *rxr) 474 { 475 struct adapter *adapter = rxr->adapter; 476 477 if (rxr->next_to_check > rxr->next_to_refresh) 478 return (rxr->next_to_check - rxr->next_to_refresh - 1); 479 else 480 return ((adapter->num_rx_desc + rxr->next_to_check) - 481 rxr->next_to_refresh - 1); 482 } 483 484 #define EM_CORE_LOCK_INIT(_sc, _name) \ 485 mtx_init(&(_sc)->core_mtx, _name, "EM Core Lock", MTX_DEF) 486 #define EM_TX_LOCK_INIT(_sc, _name) \ 487 mtx_init(&(_sc)->tx_mtx, _name, "EM TX Lock", MTX_DEF) 488 #define EM_RX_LOCK_INIT(_sc, _name) \ 489 mtx_init(&(_sc)->rx_mtx, _name, "EM RX Lock", MTX_DEF) 490 #define EM_CORE_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->core_mtx) 491 #define EM_TX_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->tx_mtx) 492 #define EM_RX_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->rx_mtx) 493 #define EM_CORE_LOCK(_sc) mtx_lock(&(_sc)->core_mtx) 494 #define EM_TX_LOCK(_sc) mtx_lock(&(_sc)->tx_mtx) 495 #define EM_TX_TRYLOCK(_sc) mtx_trylock(&(_sc)->tx_mtx) 496 #define EM_RX_LOCK(_sc) mtx_lock(&(_sc)->rx_mtx) 497 #define EM_CORE_UNLOCK(_sc) mtx_unlock(&(_sc)->core_mtx) 498 #define EM_TX_UNLOCK(_sc) mtx_unlock(&(_sc)->tx_mtx) 499 #define EM_RX_UNLOCK(_sc) mtx_unlock(&(_sc)->rx_mtx) 500 #define EM_CORE_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->core_mtx, MA_OWNED) 501 #define EM_TX_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->tx_mtx, MA_OWNED) 502 #define EM_RX_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->rx_mtx, MA_OWNED) 503 504 #endif /* _EM_H_DEFINED_ */
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