if_em.h revision 169637
1/************************************************************************** 2 3Copyright (c) 2001-2007, Intel Corporation 4All rights reserved. 5 6Redistribution and use in source and binary forms, with or without 7modification, 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 20THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30POSSIBILITY OF SUCH DAMAGE. 31 32***************************************************************************/ 33/*$FreeBSD: head/sys/dev/em/if_em.h 169637 2007-05-17 00:14:03Z jfv $*/ 34 35#ifndef _EM_H_DEFINED_ 36#define _EM_H_DEFINED_ 37 38/* Tunables */ 39 40/* 41 * EM_TXD: Maximum number of Transmit Descriptors 42 * Valid Range: 80-256 for 82542 and 82543-based adapters 43 * 80-4096 for others 44 * Default Value: 256 45 * This value is the number of transmit descriptors allocated by the driver. 46 * Increasing this value allows the driver to queue more transmits. Each 47 * descriptor is 16 bytes. 48 * Since TDLEN should be multiple of 128bytes, the number of transmit 49 * desscriptors should meet the following condition. 50 * (num_tx_desc * sizeof(struct e1000_tx_desc)) % 128 == 0 51 */ 52#define EM_MIN_TXD 80 53#define EM_MAX_TXD_82543 256 54#define EM_MAX_TXD 4096 55#define EM_DEFAULT_TXD EM_MAX_TXD_82543 56 57/* 58 * EM_RXD - Maximum number of receive Descriptors 59 * Valid Range: 80-256 for 82542 and 82543-based adapters 60 * 80-4096 for others 61 * Default Value: 256 62 * This value is the number of receive descriptors allocated by the driver. 63 * Increasing this value allows the driver to buffer more incoming packets. 64 * Each descriptor is 16 bytes. A receive buffer is also allocated for each 65 * descriptor. The maximum MTU size is 16110. 66 * Since TDLEN should be multiple of 128bytes, the number of transmit 67 * desscriptors should meet the following condition. 68 * (num_tx_desc * sizeof(struct e1000_tx_desc)) % 128 == 0 69 */ 70#define EM_MIN_RXD 80 71#define EM_MAX_RXD_82543 256 72#define EM_MAX_RXD 4096 73#define EM_DEFAULT_RXD EM_MAX_RXD_82543 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 duration of transmit watchdog timer. 137 */ 138#define EM_TX_TIMEOUT 5 /* set to 5 seconds */ 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#define EM_TX_OP_THRESHOLD (adapter->num_tx_desc / 32) 146 147/* 148 * This parameter controls whether or not autonegotation is enabled. 149 * 0 - Disable autonegotiation 150 * 1 - Enable autonegotiation 151 */ 152#define DO_AUTO_NEG 1 153 154/* 155 * This parameter control whether or not the driver will wait for 156 * autonegotiation to complete. 157 * 1 - Wait for autonegotiation to complete 158 * 0 - Don't wait for autonegotiation to complete 159 */ 160#define WAIT_FOR_AUTO_NEG_DEFAULT 0 161 162/* Tunables -- End */ 163 164#define AUTONEG_ADV_DEFAULT (ADVERTISE_10_HALF | ADVERTISE_10_FULL | \ 165 ADVERTISE_100_HALF | ADVERTISE_100_FULL | \ 166 ADVERTISE_1000_FULL) 167 168#define AUTO_ALL_MODES 0 169 170/* PHY master/slave setting */ 171#define EM_MASTER_SLAVE e1000_ms_hw_default 172 173/* 174 * Micellaneous constants 175 */ 176#define EM_VENDOR_ID 0x8086 177#define EM_FLASH 0x0014 178 179#define EM_JUMBO_PBA 0x00000028 180#define EM_DEFAULT_PBA 0x00000030 181#define EM_SMARTSPEED_DOWNSHIFT 3 182#define EM_SMARTSPEED_MAX 15 183#define EM_MAX_INTR 10 184#define EM_TSO_SEG_SIZE 4096 /* Max dma seg size */ 185 186#define MAX_NUM_MULTICAST_ADDRESSES 128 187#define PCI_ANY_ID (~0U) 188#define ETHER_ALIGN 2 189#define EM_TX_BUFFER_SIZE ((uint32_t) 1514) 190#define EM_FC_PAUSE_TIME 0x0680 191#define EM_EEPROM_APME 0x400; 192 193/* 194 * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be 195 * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary. This will 196 * also optimize cache line size effect. H/W supports up to cache line size 128. 197 */ 198#define EM_DBA_ALIGN 128 199 200#define SPEED_MODE_BIT (1<<21) /* On PCI-E MACs only */ 201 202/* PCI Config defines */ 203#define EM_BAR_TYPE(v) ((v) & EM_BAR_TYPE_MASK) 204#define EM_BAR_TYPE_MASK 0x00000001 205#define EM_BAR_TYPE_MMEM 0x00000000 206#define EM_BAR_TYPE_IO 0x00000001 207#define EM_BAR_TYPE_FLASH 0x0014 208#define EM_BAR_MEM_TYPE(v) ((v) & EM_BAR_MEM_TYPE_MASK) 209#define EM_BAR_MEM_TYPE_MASK 0x00000006 210#define EM_BAR_MEM_TYPE_32BIT 0x00000000 211#define EM_BAR_MEM_TYPE_64BIT 0x00000004 212#define EM_MSIX_BAR 3 /* On 82575 */ 213 214/* Defines for printing debug information */ 215#define DEBUG_INIT 0 216#define DEBUG_IOCTL 0 217#define DEBUG_HW 0 218 219#define INIT_DEBUGOUT(S) if (DEBUG_INIT) printf(S "\n") 220#define INIT_DEBUGOUT1(S, A) if (DEBUG_INIT) printf(S "\n", A) 221#define INIT_DEBUGOUT2(S, A, B) if (DEBUG_INIT) printf(S "\n", A, B) 222#define IOCTL_DEBUGOUT(S) if (DEBUG_IOCTL) printf(S "\n") 223#define IOCTL_DEBUGOUT1(S, A) if (DEBUG_IOCTL) printf(S "\n", A) 224#define IOCTL_DEBUGOUT2(S, A, B) if (DEBUG_IOCTL) printf(S "\n", A, B) 225#define HW_DEBUGOUT(S) if (DEBUG_HW) printf(S "\n") 226#define HW_DEBUGOUT1(S, A) if (DEBUG_HW) printf(S "\n", A) 227#define HW_DEBUGOUT2(S, A, B) if (DEBUG_HW) printf(S "\n", A, B) 228 229#define EM_MAX_SCATTER 64 230#define EM_TSO_SIZE 65535 /* maxsize of a dma transfer */ 231#define EM_TSO_SEG_SIZE 4096 /* Max dma segment size */ 232#define ETH_ZLEN 60 233#define ETH_ADDR_LEN 6 234#define CSUM_OFFLOAD 7 /* Offload bits in csum flags */ 235 236struct adapter; 237 238struct em_int_delay_info { 239 struct adapter *adapter; /* Back-pointer to the adapter struct */ 240 int offset; /* Register offset to read/write */ 241 int value; /* Current value in usecs */ 242}; 243 244/* 245 * Bus dma allocation structure used by 246 * e1000_dma_malloc and e1000_dma_free. 247 */ 248struct em_dma_alloc { 249 bus_addr_t dma_paddr; 250 caddr_t dma_vaddr; 251 bus_dma_tag_t dma_tag; 252 bus_dmamap_t dma_map; 253 bus_dma_segment_t dma_seg; 254 int dma_nseg; 255}; 256 257/* Our adapter structure */ 258struct adapter { 259 struct ifnet *ifp; 260 struct e1000_hw hw; 261 262 /* FreeBSD operating-system-specific structures. */ 263 struct e1000_osdep osdep; 264 struct device *dev; 265 struct resource *res_memory; 266 struct resource *flash_mem; 267 struct resource *msix_mem; 268 struct resource *res_ioport; 269 struct resource *res_interrupt; 270 void *int_handler_tag; 271 struct ifmedia media; 272 struct callout timer; 273 struct callout tx_fifo_timer; 274 int watchdog_timer; 275 int io_rid; 276 int msi; 277 int if_flags; 278 struct mtx mtx; 279 int em_insert_vlan_header; 280 struct task link_task; 281 struct task rxtx_task; 282 struct taskqueue *tq; /* private task queue */ 283 /* Management and WOL features */ 284 int wol; 285 int has_manage; 286 287 /* Info about the board itself */ 288 uint32_t part_num; 289 uint8_t link_active; 290 uint16_t link_speed; 291 uint16_t link_duplex; 292 uint32_t smartspeed; 293 struct em_int_delay_info tx_int_delay; 294 struct em_int_delay_info tx_abs_int_delay; 295 struct em_int_delay_info rx_int_delay; 296 struct em_int_delay_info rx_abs_int_delay; 297 298 /* 299 * Transmit definitions 300 * 301 * We have an array of num_tx_desc descriptors (handled 302 * by the controller) paired with an array of tx_buffers 303 * (at tx_buffer_area). 304 * The index of the next available descriptor is next_avail_tx_desc. 305 * The number of remaining tx_desc is num_tx_desc_avail. 306 */ 307 struct em_dma_alloc txdma; /* bus_dma glue for tx desc */ 308 struct e1000_tx_desc *tx_desc_base; 309 uint32_t next_avail_tx_desc; 310 uint32_t next_tx_to_clean; 311 volatile uint16_t num_tx_desc_avail; 312 uint16_t num_tx_desc; 313 uint32_t txd_cmd; 314 struct em_buffer *tx_buffer_area; 315 bus_dma_tag_t txtag; /* dma tag for tx */ 316 uint32_t tx_tso; /* last tx was tso */ 317 318 /* 319 * Transmit function pointer: 320 * legacy or advanced (82575 and later) 321 */ 322 int (*em_xmit) (struct adapter *adapter, struct mbuf **m_headp); 323 324 /* 325 * Receive definitions 326 * 327 * we have an array of num_rx_desc rx_desc (handled by the 328 * controller), and paired with an array of rx_buffers 329 * (at rx_buffer_area). 330 * The next pair to check on receive is at offset next_rx_desc_to_check 331 */ 332 struct em_dma_alloc rxdma; /* bus_dma glue for rx desc */ 333 struct e1000_rx_desc *rx_desc_base; 334 uint32_t next_rx_desc_to_check; 335 uint32_t rx_buffer_len; 336 uint16_t num_rx_desc; 337 int rx_process_limit; 338 struct em_buffer *rx_buffer_area; 339 bus_dma_tag_t rxtag; 340 bus_dmamap_t rx_sparemap; 341 342 /* 343 * First/last mbuf pointers, for 344 * collecting multisegment RX packets. 345 */ 346 struct mbuf *fmp; 347 struct mbuf *lmp; 348 349 /* Misc stats maintained by the driver */ 350 unsigned long dropped_pkts; 351 unsigned long mbuf_alloc_failed; 352 unsigned long mbuf_cluster_failed; 353 unsigned long no_tx_desc_avail1; 354 unsigned long no_tx_desc_avail2; 355 unsigned long no_tx_map_avail; 356 unsigned long no_tx_dma_setup; 357 unsigned long watchdog_events; 358 unsigned long rx_overruns; 359 360 /* Used in for 82547 10Mb Half workaround */ 361 #define EM_PBA_BYTES_SHIFT 0xA 362 #define EM_TX_HEAD_ADDR_SHIFT 7 363 #define EM_PBA_TX_MASK 0xFFFF0000 364 #define EM_FIFO_HDR 0x10 365 366 #define EM_82547_PKT_THRESH 0x3e0 367 368 uint32_t tx_fifo_size; 369 uint32_t tx_fifo_head; 370 uint32_t tx_fifo_head_addr; 371 uint64_t tx_fifo_reset_cnt; 372 uint64_t tx_fifo_wrk_cnt; 373 uint32_t tx_head_addr; 374 375 /* For 82544 PCIX Workaround */ 376 boolean_t pcix_82544; 377 boolean_t in_detach; 378 379 struct e1000_hw_stats stats; 380}; 381 382/* ****************************************************************************** 383 * vendor_info_array 384 * 385 * This array contains the list of Subvendor/Subdevice IDs on which the driver 386 * should load. 387 * 388 * ******************************************************************************/ 389typedef struct _em_vendor_info_t { 390 unsigned int vendor_id; 391 unsigned int device_id; 392 unsigned int subvendor_id; 393 unsigned int subdevice_id; 394 unsigned int index; 395} em_vendor_info_t; 396 397 398struct em_buffer { 399 int next_eop; /* Index of the desc to watch */ 400 struct mbuf *m_head; 401 bus_dmamap_t map; /* bus_dma map for packet */ 402}; 403 404/* For 82544 PCIX Workaround */ 405typedef struct _ADDRESS_LENGTH_PAIR 406{ 407 uint64_t address; 408 uint32_t length; 409} ADDRESS_LENGTH_PAIR, *PADDRESS_LENGTH_PAIR; 410 411typedef struct _DESCRIPTOR_PAIR 412{ 413 ADDRESS_LENGTH_PAIR descriptor[4]; 414 uint32_t elements; 415} DESC_ARRAY, *PDESC_ARRAY; 416 417#define EM_LOCK_INIT(_sc, _name) \ 418 mtx_init(&(_sc)->mtx, _name, MTX_NETWORK_LOCK, MTX_DEF) 419#define EM_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->mtx) 420#define EM_LOCK(_sc) mtx_lock(&(_sc)->mtx) 421#define EM_UNLOCK(_sc) mtx_unlock(&(_sc)->mtx) 422#define EM_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->mtx, MA_OWNED) 423 424#endif /* _EM_H_DEFINED_ */ 425