1 /****************************************************************************** 2 3 Copyright (c) 2001-2013, 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 _IXGBE_H_ 37 #define _IXGBE_H_ 38 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #ifndef IXGBE_LEGACY_TX 43 #include <sys/buf_ring.h> 44 #endif 45 #include <sys/mbuf.h> 46 #include <sys/protosw.h> 47 #include <sys/socket.h> 48 #include <sys/malloc.h> 49 #include <sys/kernel.h> 50 #include <sys/module.h> 51 #include <sys/sockio.h> 52 53 #include <net/if.h> 54 #include <net/if_arp.h> 55 #include <net/bpf.h> 56 #include <net/ethernet.h> 57 #include <net/if_dl.h> 58 #include <net/if_media.h> 59 60 #include <net/bpf.h> 61 #include <net/if_types.h> 62 #include <net/if_vlan_var.h> 63 64 #include <netinet/in_systm.h> 65 #include <netinet/in.h> 66 #include <netinet/if_ether.h> 67 #include <netinet/ip.h> 68 #include <netinet/ip6.h> 69 #include <netinet/tcp.h> 70 #include <netinet/tcp_lro.h> 71 #include <netinet/udp.h> 72 73 #include <machine/in_cksum.h> 74 75 #include <sys/bus.h> 76 #include <machine/bus.h> 77 #include <sys/rman.h> 78 #include <machine/resource.h> 79 #include <vm/vm.h> 80 #include <vm/pmap.h> 81 #include <machine/clock.h> 82 #include <dev/pci/pcivar.h> 83 #include <dev/pci/pcireg.h> 84 #include <sys/proc.h> 85 #include <sys/sysctl.h> 86 #include <sys/endian.h> 87 #include <sys/taskqueue.h> 88 #include <sys/pcpu.h> 89 #include <sys/smp.h> 90 #include <machine/smp.h> 91 92 #include "ixgbe_api.h" 93 94 /* Tunables */ 95 96 /* 97 * TxDescriptors Valid Range: 64-4096 Default Value: 256 This value is the 98 * number of transmit descriptors allocated by the driver. Increasing this 99 * value allows the driver to queue more transmits. Each descriptor is 16 100 * bytes. Performance tests have show the 2K value to be optimal for top 101 * performance. 102 */ 103 #define DEFAULT_TXD 1024 104 #define PERFORM_TXD 2048 105 #define MAX_TXD 4096 106 #define MIN_TXD 64 107 108 /* 109 * RxDescriptors Valid Range: 64-4096 Default Value: 256 This value is the 110 * number of receive descriptors allocated for each RX queue. Increasing this 111 * value allows the driver to buffer more incoming packets. Each descriptor 112 * is 16 bytes. A receive buffer is also allocated for each descriptor. 113 * 114 * Note: with 8 rings and a dual port card, it is possible to bump up 115 * against the system mbuf pool limit, you can tune nmbclusters 116 * to adjust for this. 117 */ 118 #define DEFAULT_RXD 1024 119 #define PERFORM_RXD 2048 120 #define MAX_RXD 4096 121 #define MIN_RXD 64 122 123 /* Alignment for rings */ 124 #define DBA_ALIGN 128 125 126 /* 127 * This parameter controls the maximum no of times the driver will loop in 128 * the isr. Minimum Value = 1 129 */ 130 #define MAX_LOOP 10 131 132 /* 133 * This is the max watchdog interval, ie. the time that can 134 * pass between any two TX clean operations, such only happening 135 * when the TX hardware is functioning. 136 */ 137 #define IXGBE_WATCHDOG (10 * hz) 138 139 /* 140 * This parameters control when the driver calls the routine to reclaim 141 * transmit descriptors. 142 */ 143 #define IXGBE_TX_CLEANUP_THRESHOLD (adapter->num_tx_desc / 8) 144 #define IXGBE_TX_OP_THRESHOLD (adapter->num_tx_desc / 32) 145 146 #define IXGBE_MAX_FRAME_SIZE 0x3F00 147 148 /* Flow control constants */ 149 #define IXGBE_FC_PAUSE 0xFFFF 150 #define IXGBE_FC_HI 0x20000 151 #define IXGBE_FC_LO 0x10000 152 153 /* 154 * Used for optimizing small rx mbufs. Effort is made to keep the copy 155 * small and aligned for the CPU L1 cache. 156 * 157 * MHLEN is typically 168 bytes, giving us 8-byte alignment. Getting 158 * 32 byte alignment needed for the fast bcopy results in 8 bytes being 159 * wasted. Getting 64 byte alignment, which _should_ be ideal for 160 * modern Intel CPUs, results in 40 bytes wasted and a significant drop 161 * in observed efficiency of the optimization, 97.9% -> 81.8%. 162 */ 163 #define IXGBE_RX_COPY_LEN 160 164 #define IXGBE_RX_COPY_ALIGN (MHLEN - IXGBE_RX_COPY_LEN) 165 166 /* Keep older OS drivers building... */ 167 #if !defined(SYSCTL_ADD_UQUAD) 168 #define SYSCTL_ADD_UQUAD SYSCTL_ADD_QUAD 169 #endif 170 171 /* Defines for printing debug information */ 172 #define DEBUG_INIT 0 173 #define DEBUG_IOCTL 0 174 #define DEBUG_HW 0 175 176 #define INIT_DEBUGOUT(S) if (DEBUG_INIT) printf(S "\n") 177 #define INIT_DEBUGOUT1(S, A) if (DEBUG_INIT) printf(S "\n", A) 178 #define INIT_DEBUGOUT2(S, A, B) if (DEBUG_INIT) printf(S "\n", A, B) 179 #define IOCTL_DEBUGOUT(S) if (DEBUG_IOCTL) printf(S "\n") 180 #define IOCTL_DEBUGOUT1(S, A) if (DEBUG_IOCTL) printf(S "\n", A) 181 #define IOCTL_DEBUGOUT2(S, A, B) if (DEBUG_IOCTL) printf(S "\n", A, B) 182 #define HW_DEBUGOUT(S) if (DEBUG_HW) printf(S "\n") 183 #define HW_DEBUGOUT1(S, A) if (DEBUG_HW) printf(S "\n", A) 184 #define HW_DEBUGOUT2(S, A, B) if (DEBUG_HW) printf(S "\n", A, B) 185 186 #define MAX_NUM_MULTICAST_ADDRESSES 128 187 #define IXGBE_82598_SCATTER 100 188 #define IXGBE_82599_SCATTER 32 189 #define MSIX_82598_BAR 3 190 #define MSIX_82599_BAR 4 191 #define IXGBE_TSO_SIZE 262140 192 #define IXGBE_TX_BUFFER_SIZE ((u32) 1514) 193 #define IXGBE_RX_HDR 128 194 #define IXGBE_VFTA_SIZE 128 195 #define IXGBE_BR_SIZE 4096 196 #define IXGBE_QUEUE_MIN_FREE 32 197 198 /* IOCTL define to gather SFP+ Diagnostic data */ 199 #define SIOCGI2C SIOCGIFGENERIC 200 201 /* Offload bits in mbuf flag */ 202 #if __FreeBSD_version >= 800000 203 #define CSUM_OFFLOAD (CSUM_IP|CSUM_TCP|CSUM_UDP|CSUM_SCTP) 204 #else 205 #define CSUM_OFFLOAD (CSUM_IP|CSUM_TCP|CSUM_UDP) 206 #endif 207 208 /* 209 * Interrupt Moderation parameters 210 */ 211 #define IXGBE_LOW_LATENCY 128 212 #define IXGBE_AVE_LATENCY 400 213 #define IXGBE_BULK_LATENCY 1200 214 #define IXGBE_LINK_ITR 2000 215 216 217 /* 218 ***************************************************************************** 219 * vendor_info_array 220 * 221 * This array contains the list of Subvendor/Subdevice IDs on which the driver 222 * should load. 223 * 224 ***************************************************************************** 225 */ 226 typedef struct _ixgbe_vendor_info_t { 227 unsigned int vendor_id; 228 unsigned int device_id; 229 unsigned int subvendor_id; 230 unsigned int subdevice_id; 231 unsigned int index; 232 } ixgbe_vendor_info_t; 233 234 235 /* This is used to get SFP+ module data */ 236 struct ixgbe_i2c_req { 237 u8 dev_addr; 238 u8 offset; 239 u8 len; 240 u8 data[8]; 241 }; 242 243 struct ixgbe_tx_buf { 244 union ixgbe_adv_tx_desc *eop; 245 struct mbuf *m_head; 246 bus_dmamap_t map; 247 }; 248 249 struct ixgbe_rx_buf { 250 struct mbuf *buf; 251 struct mbuf *fmp; 252 bus_dmamap_t pmap; 253 u_int flags; 254 #define IXGBE_RX_COPY 0x01 255 uint64_t addr; 256 }; 257 258 /* 259 * Bus dma allocation structure used by ixgbe_dma_malloc and ixgbe_dma_free. 260 */ 261 struct ixgbe_dma_alloc { 262 bus_addr_t dma_paddr; 263 caddr_t dma_vaddr; 264 bus_dma_tag_t dma_tag; 265 bus_dmamap_t dma_map; 266 bus_dma_segment_t dma_seg; 267 bus_size_t dma_size; 268 int dma_nseg; 269 }; 270 271 /* 272 ** Driver queue struct: this is the interrupt container 273 ** for the associated tx and rx ring. 274 */ 275 struct ix_queue { 276 struct adapter *adapter; 277 u32 msix; /* This queue's MSIX vector */ 278 u32 eims; /* This queue's EIMS bit */ 279 u32 eitr_setting; 280 struct resource *res; 281 void *tag; 282 struct tx_ring *txr; 283 struct rx_ring *rxr; 284 struct task que_task; 285 struct taskqueue *tq; 286 u64 irqs; 287 }; 288 289 /* 290 * The transmit ring, one per queue 291 */ 292 struct tx_ring { 293 struct adapter *adapter; 294 struct mtx tx_mtx; 295 u32 me; 296 int watchdog_time; 297 union ixgbe_adv_tx_desc *tx_base; 298 struct ixgbe_tx_buf *tx_buffers; 299 struct ixgbe_dma_alloc txdma; 300 volatile u16 tx_avail; 301 u16 next_avail_desc; 302 u16 next_to_clean; 303 u16 process_limit; 304 u16 num_desc; 305 enum { 306 IXGBE_QUEUE_IDLE, 307 IXGBE_QUEUE_WORKING, 308 IXGBE_QUEUE_HUNG, 309 } queue_status; 310 u32 txd_cmd; 311 bus_dma_tag_t txtag; 312 char mtx_name[16]; 313 #ifndef IXGBE_LEGACY_TX 314 struct buf_ring *br; 315 struct task txq_task; 316 #endif 317 #ifdef IXGBE_FDIR 318 u16 atr_sample; 319 u16 atr_count; 320 #endif 321 u32 bytes; /* used for AIM */ 322 u32 packets; 323 /* Soft Stats */ 324 unsigned long tso_tx; 325 unsigned long no_tx_map_avail; 326 unsigned long no_tx_dma_setup; 327 u64 no_desc_avail; 328 u64 total_packets; 329 }; 330 331 332 /* 333 * The Receive ring, one per rx queue 334 */ 335 struct rx_ring { 336 struct adapter *adapter; 337 struct mtx rx_mtx; 338 u32 me; 339 union ixgbe_adv_rx_desc *rx_base; 340 struct ixgbe_dma_alloc rxdma; 341 struct lro_ctrl lro; 342 bool lro_enabled; 343 bool hw_rsc; 344 bool discard; 345 bool vtag_strip; 346 u16 next_to_refresh; 347 u16 next_to_check; 348 u16 num_desc; 349 u16 mbuf_sz; 350 u16 process_limit; 351 char mtx_name[16]; 352 struct ixgbe_rx_buf *rx_buffers; 353 bus_dma_tag_t ptag; 354 355 u32 bytes; /* Used for AIM calc */ 356 u32 packets; 357 358 /* Soft stats */ 359 u64 rx_irq; 360 u64 rx_copies; 361 u64 rx_packets; 362 u64 rx_bytes; 363 u64 rx_discarded; 364 u64 rsc_num; 365 #ifdef IXGBE_FDIR 366 u64 flm; 367 #endif 368 }; 369 370 /* Our adapter structure */ 371 struct adapter { 372 struct ifnet *ifp; 373 struct ixgbe_hw hw; 374 375 struct ixgbe_osdep osdep; 376 struct device *dev; 377 378 struct resource *pci_mem; 379 struct resource *msix_mem; 380 381 /* 382 * Interrupt resources: this set is 383 * either used for legacy, or for Link 384 * when doing MSIX 385 */ 386 void *tag; 387 struct resource *res; 388 389 struct ifmedia media; 390 struct callout timer; 391 int msix; 392 int if_flags; 393 394 struct mtx core_mtx; 395 396 eventhandler_tag vlan_attach; 397 eventhandler_tag vlan_detach; 398 399 u16 num_vlans; 400 u16 num_queues; 401 402 /* 403 ** Shadow VFTA table, this is needed because 404 ** the real vlan filter table gets cleared during 405 ** a soft reset and the driver needs to be able 406 ** to repopulate it. 407 */ 408 u32 shadow_vfta[IXGBE_VFTA_SIZE]; 409 410 /* Info about the interface */ 411 u32 optics; 412 u32 fc; /* local flow ctrl setting */ 413 int advertise; /* link speeds */ 414 bool link_active; 415 u16 max_frame_size; 416 u16 num_segs; 417 u32 link_speed; 418 bool link_up; 419 u32 linkvec; 420 421 /* Mbuf cluster size */ 422 u32 rx_mbuf_sz; 423 424 /* Support for pluggable optics */ 425 bool sfp_probe; 426 struct task link_task; /* Link tasklet */ 427 struct task mod_task; /* SFP tasklet */ 428 struct task msf_task; /* Multispeed Fiber */ 429 #ifdef IXGBE_FDIR 430 int fdir_reinit; 431 struct task fdir_task; 432 #endif 433 struct taskqueue *tq; 434 435 /* 436 ** Queues: 437 ** This is the irq holder, it has 438 ** and RX/TX pair or rings associated 439 ** with it. 440 */ 441 struct ix_queue *queues; 442 443 /* 444 * Transmit rings: 445 * Allocated at run time, an array of rings. 446 */ 447 struct tx_ring *tx_rings; 448 u32 num_tx_desc; 449 450 /* 451 * Receive rings: 452 * Allocated at run time, an array of rings. 453 */ 454 struct rx_ring *rx_rings; 455 u64 que_mask; 456 u32 num_rx_desc; 457 458 /* Multicast array memory */ 459 u8 *mta; 460 461 462 /* Misc stats maintained by the driver */ 463 unsigned long dropped_pkts; 464 unsigned long mbuf_defrag_failed; 465 unsigned long mbuf_header_failed; 466 unsigned long mbuf_packet_failed; 467 unsigned long watchdog_events; 468 unsigned long link_irq; 469 470 struct ixgbe_hw_stats stats; 471 }; 472 473 474 /* Precision Time Sync (IEEE 1588) defines */ 475 #define ETHERTYPE_IEEE1588 0x88F7 476 #define PICOSECS_PER_TICK 20833 477 #define TSYNC_UDP_PORT 319 /* UDP port for the protocol */ 478 #define IXGBE_ADVTXD_TSTAMP 0x00080000 479 480 481 #define IXGBE_CORE_LOCK_INIT(_sc, _name) \ 482 mtx_init(&(_sc)->core_mtx, _name, "IXGBE Core Lock", MTX_DEF) 483 #define IXGBE_CORE_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->core_mtx) 484 #define IXGBE_TX_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->tx_mtx) 485 #define IXGBE_RX_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->rx_mtx) 486 #define IXGBE_CORE_LOCK(_sc) mtx_lock(&(_sc)->core_mtx) 487 #define IXGBE_TX_LOCK(_sc) mtx_lock(&(_sc)->tx_mtx) 488 #define IXGBE_TX_TRYLOCK(_sc) mtx_trylock(&(_sc)->tx_mtx) 489 #define IXGBE_RX_LOCK(_sc) mtx_lock(&(_sc)->rx_mtx) 490 #define IXGBE_CORE_UNLOCK(_sc) mtx_unlock(&(_sc)->core_mtx) 491 #define IXGBE_TX_UNLOCK(_sc) mtx_unlock(&(_sc)->tx_mtx) 492 #define IXGBE_RX_UNLOCK(_sc) mtx_unlock(&(_sc)->rx_mtx) 493 #define IXGBE_CORE_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->core_mtx, MA_OWNED) 494 #define IXGBE_TX_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->tx_mtx, MA_OWNED) 495 496 /* For backward compatibility */ 497 #if !defined(PCIER_LINK_STA) 498 #define PCIER_LINK_STA PCIR_EXPRESS_LINK_STA 499 #endif 500 501 static inline bool 502 ixgbe_is_sfp(struct ixgbe_hw *hw) 503 { 504 switch (hw->phy.type) { 505 case ixgbe_phy_sfp_avago: 506 case ixgbe_phy_sfp_ftl: 507 case ixgbe_phy_sfp_intel: 508 case ixgbe_phy_sfp_unknown: 509 case ixgbe_phy_sfp_passive_tyco: 510 case ixgbe_phy_sfp_passive_unknown: 511 return TRUE; 512 default: 513 return FALSE; 514 } 515 } 516 517 /* Workaround to make 8.0 buildable */ 518 #if __FreeBSD_version >= 800000 && __FreeBSD_version < 800504 519 static __inline int 520 drbr_needs_enqueue(struct ifnet *ifp, struct buf_ring *br) 521 { 522 #ifdef ALTQ 523 if (ALTQ_IS_ENABLED(&ifp->if_snd)) 524 return (1); 525 #endif 526 return (!buf_ring_empty(br)); 527 } 528 #endif 529 530 /* 531 ** Find the number of unrefreshed RX descriptors 532 */ 533 static inline u16 534 ixgbe_rx_unrefreshed(struct rx_ring *rxr) 535 { 536 if (rxr->next_to_check > rxr->next_to_refresh) 537 return (rxr->next_to_check - rxr->next_to_refresh - 1); 538 else 539 return ((rxr->num_desc + rxr->next_to_check) - 540 rxr->next_to_refresh - 1); 541 } 542 543 #endif /* _IXGBE_H_ */ 544