1 #ifndef _QIB_KERNEL_H 2 #define _QIB_KERNEL_H 3 /* 4 * Copyright (c) 2012 - 2017 Intel Corporation. All rights reserved. 5 * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. 6 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. 7 * 8 * This software is available to you under a choice of one of two 9 * licenses. You may choose to be licensed under the terms of the GNU 10 * General Public License (GPL) Version 2, available from the file 11 * COPYING in the main directory of this source tree, or the 12 * OpenIB.org BSD license below: 13 * 14 * Redistribution and use in source and binary forms, with or 15 * without modification, are permitted provided that the following 16 * conditions are met: 17 * 18 * - Redistributions of source code must retain the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer. 21 * 22 * - Redistributions in binary form must reproduce the above 23 * copyright notice, this list of conditions and the following 24 * disclaimer in the documentation and/or other materials 25 * provided with the distribution. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 34 * SOFTWARE. 35 */ 36 37 /* 38 * This header file is the base header file for qlogic_ib kernel code 39 * qib_user.h serves a similar purpose for user code. 40 */ 41 42 #include <linux/interrupt.h> 43 #include <linux/pci.h> 44 #include <linux/dma-mapping.h> 45 #include <linux/mutex.h> 46 #include <linux/list.h> 47 #include <linux/scatterlist.h> 48 #include <linux/slab.h> 49 #include <linux/io.h> 50 #include <linux/fs.h> 51 #include <linux/completion.h> 52 #include <linux/kref.h> 53 #include <linux/sched.h> 54 #include <linux/kthread.h> 55 #include <linux/xarray.h> 56 #include <rdma/ib_hdrs.h> 57 #include <rdma/rdma_vt.h> 58 59 #include "qib_common.h" 60 #include "qib_verbs.h" 61 62 /* only s/w major version of QLogic_IB we can handle */ 63 #define QIB_CHIP_VERS_MAJ 2U 64 65 /* don't care about this except printing */ 66 #define QIB_CHIP_VERS_MIN 0U 67 68 /* The Organization Unique Identifier (Mfg code), and its position in GUID */ 69 #define QIB_OUI 0x001175 70 #define QIB_OUI_LSB 40 71 72 /* 73 * per driver stats, either not device nor port-specific, or 74 * summed over all of the devices and ports. 75 * They are described by name via ipathfs filesystem, so layout 76 * and number of elements can change without breaking compatibility. 77 * If members are added or deleted qib_statnames[] in qib_fs.c must 78 * change to match. 79 */ 80 struct qlogic_ib_stats { 81 __u64 sps_ints; /* number of interrupts handled */ 82 __u64 sps_errints; /* number of error interrupts */ 83 __u64 sps_txerrs; /* tx-related packet errors */ 84 __u64 sps_rcverrs; /* non-crc rcv packet errors */ 85 __u64 sps_hwerrs; /* hardware errors reported (parity, etc.) */ 86 __u64 sps_nopiobufs; /* no pio bufs avail from kernel */ 87 __u64 sps_ctxts; /* number of contexts currently open */ 88 __u64 sps_lenerrs; /* number of kernel packets where RHF != LRH len */ 89 __u64 sps_buffull; 90 __u64 sps_hdrfull; 91 }; 92 93 extern struct qlogic_ib_stats qib_stats; 94 extern const struct pci_error_handlers qib_pci_err_handler; 95 96 #define QIB_CHIP_SWVERSION QIB_CHIP_VERS_MAJ 97 /* 98 * First-cut critierion for "device is active" is 99 * two thousand dwords combined Tx, Rx traffic per 100 * 5-second interval. SMA packets are 64 dwords, 101 * and occur "a few per second", presumably each way. 102 */ 103 #define QIB_TRAFFIC_ACTIVE_THRESHOLD (2000) 104 105 /* 106 * Below contains all data related to a single context (formerly called port). 107 */ 108 109 #ifdef CONFIG_DEBUG_FS 110 struct qib_opcode_stats_perctx; 111 #endif 112 113 struct qib_ctxtdata { 114 void **rcvegrbuf; 115 dma_addr_t *rcvegrbuf_phys; 116 /* rcvhdrq base, needs mmap before useful */ 117 void *rcvhdrq; 118 /* kernel virtual address where hdrqtail is updated */ 119 void *rcvhdrtail_kvaddr; 120 /* 121 * temp buffer for expected send setup, allocated at open, instead 122 * of each setup call 123 */ 124 void *tid_pg_list; 125 /* 126 * Shared page for kernel to signal user processes that send buffers 127 * need disarming. The process should call QIB_CMD_DISARM_BUFS 128 * or QIB_CMD_ACK_EVENT with IPATH_EVENT_DISARM_BUFS set. 129 */ 130 unsigned long *user_event_mask; 131 /* when waiting for rcv or pioavail */ 132 wait_queue_head_t wait; 133 /* 134 * rcvegr bufs base, physical, must fit 135 * in 44 bits so 32 bit programs mmap64 44 bit works) 136 */ 137 dma_addr_t rcvegr_phys; 138 /* mmap of hdrq, must fit in 44 bits */ 139 dma_addr_t rcvhdrq_phys; 140 dma_addr_t rcvhdrqtailaddr_phys; 141 142 /* 143 * number of opens (including slave sub-contexts) on this instance 144 * (ignoring forks, dup, etc. for now) 145 */ 146 int cnt; 147 /* 148 * how much space to leave at start of eager TID entries for 149 * protocol use, on each TID 150 */ 151 /* instead of calculating it */ 152 unsigned ctxt; 153 /* local node of context */ 154 int node_id; 155 /* non-zero if ctxt is being shared. */ 156 u16 subctxt_cnt; 157 /* non-zero if ctxt is being shared. */ 158 u16 subctxt_id; 159 /* number of eager TID entries. */ 160 u16 rcvegrcnt; 161 /* index of first eager TID entry. */ 162 u16 rcvegr_tid_base; 163 /* number of pio bufs for this ctxt (all procs, if shared) */ 164 u32 piocnt; 165 /* first pio buffer for this ctxt */ 166 u32 pio_base; 167 /* chip offset of PIO buffers for this ctxt */ 168 u32 piobufs; 169 /* how many alloc_pages() chunks in rcvegrbuf_pages */ 170 u32 rcvegrbuf_chunks; 171 /* how many egrbufs per chunk */ 172 u16 rcvegrbufs_perchunk; 173 /* ilog2 of above */ 174 u16 rcvegrbufs_perchunk_shift; 175 /* order for rcvegrbuf_pages */ 176 size_t rcvegrbuf_size; 177 /* rcvhdrq size (for freeing) */ 178 size_t rcvhdrq_size; 179 /* per-context flags for fileops/intr communication */ 180 unsigned long flag; 181 /* next expected TID to check when looking for free */ 182 u32 tidcursor; 183 /* WAIT_RCV that timed out, no interrupt */ 184 u32 rcvwait_to; 185 /* WAIT_PIO that timed out, no interrupt */ 186 u32 piowait_to; 187 /* WAIT_RCV already happened, no wait */ 188 u32 rcvnowait; 189 /* WAIT_PIO already happened, no wait */ 190 u32 pionowait; 191 /* total number of polled urgent packets */ 192 u32 urgent; 193 /* saved total number of polled urgent packets for poll edge trigger */ 194 u32 urgent_poll; 195 /* pid of process using this ctxt */ 196 pid_t pid; 197 pid_t subpid[QLOGIC_IB_MAX_SUBCTXT]; 198 /* same size as task_struct .comm[], command that opened context */ 199 char comm[TASK_COMM_LEN]; 200 /* pkeys set by this use of this ctxt */ 201 u16 pkeys[4]; 202 /* so file ops can get at unit */ 203 struct qib_devdata *dd; 204 /* so funcs that need physical port can get it easily */ 205 struct qib_pportdata *ppd; 206 /* A page of memory for rcvhdrhead, rcvegrhead, rcvegrtail * N */ 207 void *subctxt_uregbase; 208 /* An array of pages for the eager receive buffers * N */ 209 void *subctxt_rcvegrbuf; 210 /* An array of pages for the eager header queue entries * N */ 211 void *subctxt_rcvhdr_base; 212 /* The version of the library which opened this ctxt */ 213 u32 userversion; 214 /* Bitmask of active slaves */ 215 u32 active_slaves; 216 /* Type of packets or conditions we want to poll for */ 217 u16 poll_type; 218 /* receive packet sequence counter */ 219 u8 seq_cnt; 220 u8 redirect_seq_cnt; 221 /* ctxt rcvhdrq head offset */ 222 u32 head; 223 /* QPs waiting for context processing */ 224 struct list_head qp_wait_list; 225 #ifdef CONFIG_DEBUG_FS 226 /* verbs stats per CTX */ 227 struct qib_opcode_stats_perctx *opstats; 228 #endif 229 }; 230 231 struct rvt_sge_state; 232 233 struct qib_sdma_txreq { 234 int flags; 235 int sg_count; 236 dma_addr_t addr; 237 void (*callback)(struct qib_sdma_txreq *, int); 238 u16 start_idx; /* sdma private */ 239 u16 next_descq_idx; /* sdma private */ 240 struct list_head list; /* sdma private */ 241 }; 242 243 struct qib_sdma_desc { 244 __le64 qw[2]; 245 }; 246 247 struct qib_verbs_txreq { 248 struct qib_sdma_txreq txreq; 249 struct rvt_qp *qp; 250 struct rvt_swqe *wqe; 251 u32 dwords; 252 u16 hdr_dwords; 253 u16 hdr_inx; 254 struct qib_pio_header *align_buf; 255 struct rvt_mregion *mr; 256 struct rvt_sge_state *ss; 257 }; 258 259 #define QIB_SDMA_TXREQ_F_USELARGEBUF 0x1 260 #define QIB_SDMA_TXREQ_F_HEADTOHOST 0x2 261 #define QIB_SDMA_TXREQ_F_INTREQ 0x4 262 #define QIB_SDMA_TXREQ_F_FREEBUF 0x8 263 #define QIB_SDMA_TXREQ_F_FREEDESC 0x10 264 265 #define QIB_SDMA_TXREQ_S_OK 0 266 #define QIB_SDMA_TXREQ_S_SENDERROR 1 267 #define QIB_SDMA_TXREQ_S_ABORTED 2 268 #define QIB_SDMA_TXREQ_S_SHUTDOWN 3 269 270 /* 271 * Get/Set IB link-level config parameters for f_get/set_ib_cfg() 272 * Mostly for MADs that set or query link parameters, also ipath 273 * config interfaces 274 */ 275 #define QIB_IB_CFG_LIDLMC 0 /* LID (LS16b) and Mask (MS16b) */ 276 #define QIB_IB_CFG_LWID_ENB 2 /* allowed Link-width */ 277 #define QIB_IB_CFG_LWID 3 /* currently active Link-width */ 278 #define QIB_IB_CFG_SPD_ENB 4 /* allowed Link speeds */ 279 #define QIB_IB_CFG_SPD 5 /* current Link spd */ 280 #define QIB_IB_CFG_RXPOL_ENB 6 /* Auto-RX-polarity enable */ 281 #define QIB_IB_CFG_LREV_ENB 7 /* Auto-Lane-reversal enable */ 282 #define QIB_IB_CFG_LINKLATENCY 8 /* Link Latency (IB1.2 only) */ 283 #define QIB_IB_CFG_HRTBT 9 /* IB heartbeat off/enable/auto; DDR/QDR only */ 284 #define QIB_IB_CFG_OP_VLS 10 /* operational VLs */ 285 #define QIB_IB_CFG_VL_HIGH_CAP 11 /* num of VL high priority weights */ 286 #define QIB_IB_CFG_VL_LOW_CAP 12 /* num of VL low priority weights */ 287 #define QIB_IB_CFG_OVERRUN_THRESH 13 /* IB overrun threshold */ 288 #define QIB_IB_CFG_PHYERR_THRESH 14 /* IB PHY error threshold */ 289 #define QIB_IB_CFG_LINKDEFAULT 15 /* IB link default (sleep/poll) */ 290 #define QIB_IB_CFG_PKEYS 16 /* update partition keys */ 291 #define QIB_IB_CFG_MTU 17 /* update MTU in IBC */ 292 #define QIB_IB_CFG_LSTATE 18 /* update linkcmd and linkinitcmd in IBC */ 293 #define QIB_IB_CFG_VL_HIGH_LIMIT 19 294 #define QIB_IB_CFG_PMA_TICKS 20 /* PMA sample tick resolution */ 295 #define QIB_IB_CFG_PORT 21 /* switch port we are connected to */ 296 297 /* 298 * for CFG_LSTATE: LINKCMD in upper 16 bits, LINKINITCMD in lower 16 299 * IB_LINKINITCMD_POLL and SLEEP are also used as set/get values for 300 * QIB_IB_CFG_LINKDEFAULT cmd 301 */ 302 #define IB_LINKCMD_DOWN (0 << 16) 303 #define IB_LINKCMD_ARMED (1 << 16) 304 #define IB_LINKCMD_ACTIVE (2 << 16) 305 #define IB_LINKINITCMD_NOP 0 306 #define IB_LINKINITCMD_POLL 1 307 #define IB_LINKINITCMD_SLEEP 2 308 #define IB_LINKINITCMD_DISABLE 3 309 310 /* 311 * valid states passed to qib_set_linkstate() user call 312 */ 313 #define QIB_IB_LINKDOWN 0 314 #define QIB_IB_LINKARM 1 315 #define QIB_IB_LINKACTIVE 2 316 #define QIB_IB_LINKDOWN_ONLY 3 317 #define QIB_IB_LINKDOWN_SLEEP 4 318 #define QIB_IB_LINKDOWN_DISABLE 5 319 320 /* 321 * These 7 values (SDR, DDR, and QDR may be ORed for auto-speed 322 * negotiation) are used for the 3rd argument to path_f_set_ib_cfg 323 * with cmd QIB_IB_CFG_SPD_ENB, by direct calls or via sysfs. They 324 * are also the possible values for qib_link_speed_enabled and active 325 * The values were chosen to match values used within the IB spec. 326 */ 327 #define QIB_IB_SDR 1 328 #define QIB_IB_DDR 2 329 #define QIB_IB_QDR 4 330 331 #define QIB_DEFAULT_MTU 4096 332 333 /* max number of IB ports supported per HCA */ 334 #define QIB_MAX_IB_PORTS 2 335 336 /* 337 * Possible IB config parameters for f_get/set_ib_table() 338 */ 339 #define QIB_IB_TBL_VL_HIGH_ARB 1 /* Get/set VL high priority weights */ 340 #define QIB_IB_TBL_VL_LOW_ARB 2 /* Get/set VL low priority weights */ 341 342 /* 343 * Possible "operations" for f_rcvctrl(ppd, op, ctxt) 344 * these are bits so they can be combined, e.g. 345 * QIB_RCVCTRL_INTRAVAIL_ENB | QIB_RCVCTRL_CTXT_ENB 346 */ 347 #define QIB_RCVCTRL_TAILUPD_ENB 0x01 348 #define QIB_RCVCTRL_TAILUPD_DIS 0x02 349 #define QIB_RCVCTRL_CTXT_ENB 0x04 350 #define QIB_RCVCTRL_CTXT_DIS 0x08 351 #define QIB_RCVCTRL_INTRAVAIL_ENB 0x10 352 #define QIB_RCVCTRL_INTRAVAIL_DIS 0x20 353 #define QIB_RCVCTRL_PKEY_ENB 0x40 /* Note, default is enabled */ 354 #define QIB_RCVCTRL_PKEY_DIS 0x80 355 #define QIB_RCVCTRL_BP_ENB 0x0100 356 #define QIB_RCVCTRL_BP_DIS 0x0200 357 #define QIB_RCVCTRL_TIDFLOW_ENB 0x0400 358 #define QIB_RCVCTRL_TIDFLOW_DIS 0x0800 359 360 /* 361 * Possible "operations" for f_sendctrl(ppd, op, var) 362 * these are bits so they can be combined, e.g. 363 * QIB_SENDCTRL_BUFAVAIL_ENB | QIB_SENDCTRL_ENB 364 * Some operations (e.g. DISARM, ABORT) are known to 365 * be "one-shot", so do not modify shadow. 366 */ 367 #define QIB_SENDCTRL_DISARM (0x1000) 368 #define QIB_SENDCTRL_DISARM_BUF(bufn) ((bufn) | QIB_SENDCTRL_DISARM) 369 /* available (0x2000) */ 370 #define QIB_SENDCTRL_AVAIL_DIS (0x4000) 371 #define QIB_SENDCTRL_AVAIL_ENB (0x8000) 372 #define QIB_SENDCTRL_AVAIL_BLIP (0x10000) 373 #define QIB_SENDCTRL_SEND_DIS (0x20000) 374 #define QIB_SENDCTRL_SEND_ENB (0x40000) 375 #define QIB_SENDCTRL_FLUSH (0x80000) 376 #define QIB_SENDCTRL_CLEAR (0x100000) 377 #define QIB_SENDCTRL_DISARM_ALL (0x200000) 378 379 /* 380 * These are the generic indices for requesting per-port 381 * counter values via the f_portcntr function. They 382 * are always returned as 64 bit values, although most 383 * are 32 bit counters. 384 */ 385 /* send-related counters */ 386 #define QIBPORTCNTR_PKTSEND 0U 387 #define QIBPORTCNTR_WORDSEND 1U 388 #define QIBPORTCNTR_PSXMITDATA 2U 389 #define QIBPORTCNTR_PSXMITPKTS 3U 390 #define QIBPORTCNTR_PSXMITWAIT 4U 391 #define QIBPORTCNTR_SENDSTALL 5U 392 /* receive-related counters */ 393 #define QIBPORTCNTR_PKTRCV 6U 394 #define QIBPORTCNTR_PSRCVDATA 7U 395 #define QIBPORTCNTR_PSRCVPKTS 8U 396 #define QIBPORTCNTR_RCVEBP 9U 397 #define QIBPORTCNTR_RCVOVFL 10U 398 #define QIBPORTCNTR_WORDRCV 11U 399 /* IB link related error counters */ 400 #define QIBPORTCNTR_RXLOCALPHYERR 12U 401 #define QIBPORTCNTR_RXVLERR 13U 402 #define QIBPORTCNTR_ERRICRC 14U 403 #define QIBPORTCNTR_ERRVCRC 15U 404 #define QIBPORTCNTR_ERRLPCRC 16U 405 #define QIBPORTCNTR_BADFORMAT 17U 406 #define QIBPORTCNTR_ERR_RLEN 18U 407 #define QIBPORTCNTR_IBSYMBOLERR 19U 408 #define QIBPORTCNTR_INVALIDRLEN 20U 409 #define QIBPORTCNTR_UNSUPVL 21U 410 #define QIBPORTCNTR_EXCESSBUFOVFL 22U 411 #define QIBPORTCNTR_ERRLINK 23U 412 #define QIBPORTCNTR_IBLINKDOWN 24U 413 #define QIBPORTCNTR_IBLINKERRRECOV 25U 414 #define QIBPORTCNTR_LLI 26U 415 /* other error counters */ 416 #define QIBPORTCNTR_RXDROPPKT 27U 417 #define QIBPORTCNTR_VL15PKTDROP 28U 418 #define QIBPORTCNTR_ERRPKEY 29U 419 #define QIBPORTCNTR_KHDROVFL 30U 420 /* sampling counters (these are actually control registers) */ 421 #define QIBPORTCNTR_PSINTERVAL 31U 422 #define QIBPORTCNTR_PSSTART 32U 423 #define QIBPORTCNTR_PSSTAT 33U 424 425 /* how often we check for packet activity for "power on hours (in seconds) */ 426 #define ACTIVITY_TIMER 5 427 428 #define MAX_NAME_SIZE 64 429 430 #ifdef CONFIG_INFINIBAND_QIB_DCA 431 struct qib_irq_notify; 432 #endif 433 434 struct qib_msix_entry { 435 void *arg; 436 #ifdef CONFIG_INFINIBAND_QIB_DCA 437 int dca; 438 int rcv; 439 struct qib_irq_notify *notifier; 440 #endif 441 cpumask_var_t mask; 442 }; 443 444 /* Below is an opaque struct. Each chip (device) can maintain 445 * private data needed for its operation, but not germane to the 446 * rest of the driver. For convenience, we define another that 447 * is chip-specific, per-port 448 */ 449 struct qib_chip_specific; 450 struct qib_chipport_specific; 451 452 enum qib_sdma_states { 453 qib_sdma_state_s00_hw_down, 454 qib_sdma_state_s10_hw_start_up_wait, 455 qib_sdma_state_s20_idle, 456 qib_sdma_state_s30_sw_clean_up_wait, 457 qib_sdma_state_s40_hw_clean_up_wait, 458 qib_sdma_state_s50_hw_halt_wait, 459 qib_sdma_state_s99_running, 460 }; 461 462 enum qib_sdma_events { 463 qib_sdma_event_e00_go_hw_down, 464 qib_sdma_event_e10_go_hw_start, 465 qib_sdma_event_e20_hw_started, 466 qib_sdma_event_e30_go_running, 467 qib_sdma_event_e40_sw_cleaned, 468 qib_sdma_event_e50_hw_cleaned, 469 qib_sdma_event_e60_hw_halted, 470 qib_sdma_event_e70_go_idle, 471 qib_sdma_event_e7220_err_halted, 472 qib_sdma_event_e7322_err_halted, 473 qib_sdma_event_e90_timer_tick, 474 }; 475 476 struct sdma_set_state_action { 477 unsigned op_enable:1; 478 unsigned op_intenable:1; 479 unsigned op_halt:1; 480 unsigned op_drain:1; 481 unsigned go_s99_running_tofalse:1; 482 unsigned go_s99_running_totrue:1; 483 }; 484 485 struct qib_sdma_state { 486 struct kref kref; 487 struct completion comp; 488 enum qib_sdma_states current_state; 489 struct sdma_set_state_action *set_state_action; 490 unsigned current_op; 491 unsigned go_s99_running; 492 unsigned first_sendbuf; 493 unsigned last_sendbuf; /* really last +1 */ 494 /* debugging/devel */ 495 enum qib_sdma_states previous_state; 496 unsigned previous_op; 497 enum qib_sdma_events last_event; 498 }; 499 500 struct xmit_wait { 501 struct timer_list timer; 502 u64 counter; 503 u8 flags; 504 struct cache { 505 u64 psxmitdata; 506 u64 psrcvdata; 507 u64 psxmitpkts; 508 u64 psrcvpkts; 509 u64 psxmitwait; 510 } counter_cache; 511 }; 512 513 /* 514 * The structure below encapsulates data relevant to a physical IB Port. 515 * Current chips support only one such port, but the separation 516 * clarifies things a bit. Note that to conform to IB conventions, 517 * port-numbers are one-based. The first or only port is port1. 518 */ 519 struct qib_pportdata { 520 struct qib_ibport ibport_data; 521 522 struct qib_devdata *dd; 523 struct qib_chippport_specific *cpspec; /* chip-specific per-port */ 524 525 /* GUID for this interface, in network order */ 526 __be64 guid; 527 528 /* QIB_POLL, etc. link-state specific flags, per port */ 529 u32 lflags; 530 /* qib_lflags driver is waiting for */ 531 u32 state_wanted; 532 spinlock_t lflags_lock; 533 534 /* ref count for each pkey */ 535 atomic_t pkeyrefs[4]; 536 537 /* 538 * this address is mapped readonly into user processes so they can 539 * get status cheaply, whenever they want. One qword of status per port 540 */ 541 u64 *statusp; 542 543 /* SendDMA related entries */ 544 545 /* read mostly */ 546 struct qib_sdma_desc *sdma_descq; 547 struct workqueue_struct *qib_wq; 548 struct qib_sdma_state sdma_state; 549 dma_addr_t sdma_descq_phys; 550 volatile __le64 *sdma_head_dma; /* DMA'ed by chip */ 551 dma_addr_t sdma_head_phys; 552 u16 sdma_descq_cnt; 553 554 /* read/write using lock */ 555 spinlock_t sdma_lock ____cacheline_aligned_in_smp; 556 struct list_head sdma_activelist; 557 struct list_head sdma_userpending; 558 u64 sdma_descq_added; 559 u64 sdma_descq_removed; 560 u16 sdma_descq_tail; 561 u16 sdma_descq_head; 562 u8 sdma_generation; 563 u8 sdma_intrequest; 564 565 struct tasklet_struct sdma_sw_clean_up_task 566 ____cacheline_aligned_in_smp; 567 568 wait_queue_head_t state_wait; /* for state_wanted */ 569 570 /* HoL blocking for SMP replies */ 571 unsigned hol_state; 572 struct timer_list hol_timer; 573 574 /* 575 * Shadow copies of registers; size indicates read access size. 576 * Most of them are readonly, but some are write-only register, 577 * where we manipulate the bits in the shadow copy, and then write 578 * the shadow copy to qlogic_ib. 579 * 580 * We deliberately make most of these 32 bits, since they have 581 * restricted range. For any that we read, we won't to generate 32 582 * bit accesses, since Opteron will generate 2 separate 32 bit HT 583 * transactions for a 64 bit read, and we want to avoid unnecessary 584 * bus transactions. 585 */ 586 587 /* This is the 64 bit group */ 588 /* last ibcstatus. opaque outside chip-specific code */ 589 u64 lastibcstat; 590 591 /* these are the "32 bit" regs */ 592 593 /* 594 * the following two are 32-bit bitmasks, but {test,clear,set}_bit 595 * all expect bit fields to be "unsigned long" 596 */ 597 unsigned long p_rcvctrl; /* shadow per-port rcvctrl */ 598 unsigned long p_sendctrl; /* shadow per-port sendctrl */ 599 600 u32 ibmtu; /* The MTU programmed for this unit */ 601 /* 602 * Current max size IB packet (in bytes) including IB headers, that 603 * we can send. Changes when ibmtu changes. 604 */ 605 u32 ibmaxlen; 606 /* 607 * ibmaxlen at init time, limited by chip and by receive buffer 608 * size. Not changed after init. 609 */ 610 u32 init_ibmaxlen; 611 /* LID programmed for this instance */ 612 u16 lid; 613 /* list of pkeys programmed; 0 if not set */ 614 u16 pkeys[4]; 615 /* LID mask control */ 616 u8 lmc; 617 u8 link_width_supported; 618 u16 link_speed_supported; 619 u8 link_width_enabled; 620 u16 link_speed_enabled; 621 u8 link_width_active; 622 u16 link_speed_active; 623 u8 vls_supported; 624 u8 vls_operational; 625 /* Rx Polarity inversion (compensate for ~tx on partner) */ 626 u8 rx_pol_inv; 627 628 u8 hw_pidx; /* physical port index */ 629 u32 port; /* IB port number and index into dd->pports - 1 */ 630 631 u8 delay_mult; 632 633 /* used to override LED behavior */ 634 u8 led_override; /* Substituted for normal value, if non-zero */ 635 u16 led_override_timeoff; /* delta to next timer event */ 636 u8 led_override_vals[2]; /* Alternates per blink-frame */ 637 u8 led_override_phase; /* Just counts, LSB picks from vals[] */ 638 atomic_t led_override_timer_active; 639 /* Used to flash LEDs in override mode */ 640 struct timer_list led_override_timer; 641 struct xmit_wait cong_stats; 642 struct timer_list symerr_clear_timer; 643 644 /* Synchronize access between driver writes and sysfs reads */ 645 spinlock_t cc_shadow_lock 646 ____cacheline_aligned_in_smp; 647 648 /* Shadow copy of the congestion control table */ 649 struct cc_table_shadow *ccti_entries_shadow; 650 651 /* Shadow copy of the congestion control entries */ 652 struct ib_cc_congestion_setting_attr_shadow *congestion_entries_shadow; 653 654 /* List of congestion control table entries */ 655 struct ib_cc_table_entry_shadow *ccti_entries; 656 657 /* 16 congestion entries with each entry corresponding to a SL */ 658 struct ib_cc_congestion_entry_shadow *congestion_entries; 659 660 /* Maximum number of congestion control entries that the agent expects 661 * the manager to send. 662 */ 663 u16 cc_supported_table_entries; 664 665 /* Total number of congestion control table entries */ 666 u16 total_cct_entry; 667 668 /* Bit map identifying service level */ 669 u16 cc_sl_control_map; 670 671 /* maximum congestion control table index */ 672 u16 ccti_limit; 673 674 /* CA's max number of 64 entry units in the congestion control table */ 675 u8 cc_max_table_entries; 676 }; 677 678 /* Observers. Not to be taken lightly, possibly not to ship. */ 679 /* 680 * If a diag read or write is to (bottom <= offset <= top), 681 * the "hook" is called, allowing, e.g. shadows to be 682 * updated in sync with the driver. struct diag_observer 683 * is the "visible" part. 684 */ 685 struct diag_observer; 686 687 typedef int (*diag_hook) (struct qib_devdata *dd, 688 const struct diag_observer *op, 689 u32 offs, u64 *data, u64 mask, int only_32); 690 691 struct diag_observer { 692 diag_hook hook; 693 u32 bottom; 694 u32 top; 695 }; 696 697 extern int qib_register_observer(struct qib_devdata *dd, 698 const struct diag_observer *op); 699 700 /* Only declared here, not defined. Private to diags */ 701 struct diag_observer_list_elt; 702 703 /* device data struct now contains only "general per-device" info. 704 * fields related to a physical IB port are in a qib_pportdata struct, 705 * described above) while fields only used by a particular chip-type are in 706 * a qib_chipdata struct, whose contents are opaque to this file. 707 */ 708 struct qib_devdata { 709 struct qib_ibdev verbs_dev; /* must be first */ 710 struct list_head list; 711 /* pointers to related structs for this device */ 712 /* pci access data structure */ 713 struct pci_dev *pcidev; 714 struct cdev *user_cdev; 715 struct cdev *diag_cdev; 716 struct device *user_device; 717 struct device *diag_device; 718 719 /* mem-mapped pointer to base of chip regs */ 720 u64 __iomem *kregbase; 721 /* end of mem-mapped chip space excluding sendbuf and user regs */ 722 u64 __iomem *kregend; 723 /* physical address of chip for io_remap, etc. */ 724 resource_size_t physaddr; 725 /* qib_cfgctxts pointers */ 726 struct qib_ctxtdata **rcd; /* Receive Context Data */ 727 728 /* qib_pportdata, points to array of (physical) port-specific 729 * data structs, indexed by pidx (0..n-1) 730 */ 731 struct qib_pportdata *pport; 732 struct qib_chip_specific *cspec; /* chip-specific */ 733 734 /* kvirt address of 1st 2k pio buffer */ 735 void __iomem *pio2kbase; 736 /* kvirt address of 1st 4k pio buffer */ 737 void __iomem *pio4kbase; 738 /* mem-mapped pointer to base of PIO buffers (if using WC PAT) */ 739 void __iomem *piobase; 740 /* mem-mapped pointer to base of user chip regs (if using WC PAT) */ 741 u64 __iomem *userbase; 742 void __iomem *piovl15base; /* base of VL15 buffers, if not WC */ 743 /* 744 * points to area where PIOavail registers will be DMA'ed. 745 * Has to be on a page of it's own, because the page will be 746 * mapped into user program space. This copy is *ONLY* ever 747 * written by DMA, not by the driver! Need a copy per device 748 * when we get to multiple devices 749 */ 750 volatile __le64 *pioavailregs_dma; /* DMA'ed by chip */ 751 /* physical address where updates occur */ 752 dma_addr_t pioavailregs_phys; 753 754 /* device-specific implementations of functions needed by 755 * common code. Contrary to previous consensus, we can't 756 * really just point to a device-specific table, because we 757 * may need to "bend", e.g. *_f_put_tid 758 */ 759 /* fallback to alternate interrupt type if possible */ 760 int (*f_intr_fallback)(struct qib_devdata *); 761 /* hard reset chip */ 762 int (*f_reset)(struct qib_devdata *); 763 void (*f_quiet_serdes)(struct qib_pportdata *); 764 int (*f_bringup_serdes)(struct qib_pportdata *); 765 int (*f_early_init)(struct qib_devdata *); 766 void (*f_clear_tids)(struct qib_devdata *, struct qib_ctxtdata *); 767 void (*f_put_tid)(struct qib_devdata *, u64 __iomem*, 768 u32, unsigned long); 769 void (*f_cleanup)(struct qib_devdata *); 770 void (*f_setextled)(struct qib_pportdata *, u32); 771 /* fill out chip-specific fields */ 772 int (*f_get_base_info)(struct qib_ctxtdata *, struct qib_base_info *); 773 /* free irq */ 774 void (*f_free_irq)(struct qib_devdata *); 775 struct qib_message_header *(*f_get_msgheader) 776 (struct qib_devdata *, __le32 *); 777 void (*f_config_ctxts)(struct qib_devdata *); 778 int (*f_get_ib_cfg)(struct qib_pportdata *, int); 779 int (*f_set_ib_cfg)(struct qib_pportdata *, int, u32); 780 int (*f_set_ib_loopback)(struct qib_pportdata *, const char *); 781 int (*f_get_ib_table)(struct qib_pportdata *, int, void *); 782 int (*f_set_ib_table)(struct qib_pportdata *, int, void *); 783 u32 (*f_iblink_state)(u64); 784 u8 (*f_ibphys_portstate)(u64); 785 void (*f_xgxs_reset)(struct qib_pportdata *); 786 /* per chip actions needed for IB Link up/down changes */ 787 int (*f_ib_updown)(struct qib_pportdata *, int, u64); 788 u32 __iomem *(*f_getsendbuf)(struct qib_pportdata *, u64, u32 *); 789 /* Read/modify/write of GPIO pins (potentially chip-specific */ 790 int (*f_gpio_mod)(struct qib_devdata *dd, u32 out, u32 dir, 791 u32 mask); 792 /* Enable writes to config EEPROM (if supported) */ 793 int (*f_eeprom_wen)(struct qib_devdata *dd, int wen); 794 /* 795 * modify rcvctrl shadow[s] and write to appropriate chip-regs. 796 * see above QIB_RCVCTRL_xxx_ENB/DIS for operations. 797 * (ctxt == -1) means "all contexts", only meaningful for 798 * clearing. Could remove if chip_spec shutdown properly done. 799 */ 800 void (*f_rcvctrl)(struct qib_pportdata *, unsigned int op, 801 int ctxt); 802 /* Read/modify/write sendctrl appropriately for op and port. */ 803 void (*f_sendctrl)(struct qib_pportdata *, u32 op); 804 void (*f_set_intr_state)(struct qib_devdata *, u32); 805 void (*f_set_armlaunch)(struct qib_devdata *, u32); 806 void (*f_wantpiobuf_intr)(struct qib_devdata *, u32); 807 int (*f_late_initreg)(struct qib_devdata *); 808 int (*f_init_sdma_regs)(struct qib_pportdata *); 809 u16 (*f_sdma_gethead)(struct qib_pportdata *); 810 int (*f_sdma_busy)(struct qib_pportdata *); 811 void (*f_sdma_update_tail)(struct qib_pportdata *, u16); 812 void (*f_sdma_set_desc_cnt)(struct qib_pportdata *, unsigned); 813 void (*f_sdma_sendctrl)(struct qib_pportdata *, unsigned); 814 void (*f_sdma_hw_clean_up)(struct qib_pportdata *); 815 void (*f_sdma_hw_start_up)(struct qib_pportdata *); 816 void (*f_sdma_init_early)(struct qib_pportdata *); 817 void (*f_set_cntr_sample)(struct qib_pportdata *, u32, u32); 818 void (*f_update_usrhead)(struct qib_ctxtdata *, u64, u32, u32, u32); 819 u32 (*f_hdrqempty)(struct qib_ctxtdata *); 820 u64 (*f_portcntr)(struct qib_pportdata *, u32); 821 u32 (*f_read_cntrs)(struct qib_devdata *, loff_t, char **, 822 u64 **); 823 u32 (*f_read_portcntrs)(struct qib_devdata *, loff_t, u32, 824 char **, u64 **); 825 u32 (*f_setpbc_control)(struct qib_pportdata *, u32, u8, u8); 826 void (*f_initvl15_bufs)(struct qib_devdata *); 827 void (*f_init_ctxt)(struct qib_ctxtdata *); 828 void (*f_txchk_change)(struct qib_devdata *, u32, u32, u32, 829 struct qib_ctxtdata *); 830 void (*f_writescratch)(struct qib_devdata *, u32); 831 int (*f_tempsense_rd)(struct qib_devdata *, int regnum); 832 #ifdef CONFIG_INFINIBAND_QIB_DCA 833 int (*f_notify_dca)(struct qib_devdata *, unsigned long event); 834 #endif 835 836 char *boardname; /* human readable board info */ 837 838 /* template for writing TIDs */ 839 u64 tidtemplate; 840 /* value to write to free TIDs */ 841 u64 tidinvalid; 842 843 /* number of registers used for pioavail */ 844 u32 pioavregs; 845 /* device (not port) flags, basically device capabilities */ 846 u32 flags; 847 /* last buffer for user use */ 848 u32 lastctxt_piobuf; 849 850 /* reset value */ 851 u64 z_int_counter; 852 /* percpu intcounter */ 853 u64 __percpu *int_counter; 854 855 /* pio bufs allocated per ctxt */ 856 u32 pbufsctxt; 857 /* if remainder on bufs/ctxt, ctxts < extrabuf get 1 extra */ 858 u32 ctxts_extrabuf; 859 /* 860 * number of ctxts configured as max; zero is set to number chip 861 * supports, less gives more pio bufs/ctxt, etc. 862 */ 863 u32 cfgctxts; 864 /* 865 * number of ctxts available for PSM open 866 */ 867 u32 freectxts; 868 869 /* 870 * hint that we should update pioavailshadow before 871 * looking for a PIO buffer 872 */ 873 u32 upd_pio_shadow; 874 875 /* internal debugging stats */ 876 u32 maxpkts_call; 877 u32 avgpkts_call; 878 u64 nopiobufs; 879 880 /* PCI Vendor ID (here for NodeInfo) */ 881 u16 vendorid; 882 /* PCI Device ID (here for NodeInfo) */ 883 u16 deviceid; 884 /* for write combining settings */ 885 int wc_cookie; 886 unsigned long wc_base; 887 unsigned long wc_len; 888 889 /* shadow copy of struct page *'s for exp tid pages */ 890 struct page **pageshadow; 891 /* shadow copy of dma handles for exp tid pages */ 892 dma_addr_t *physshadow; 893 u64 __iomem *egrtidbase; 894 spinlock_t sendctrl_lock; /* protect changes to sendctrl shadow */ 895 /* around rcd and (user ctxts) ctxt_cnt use (intr vs free) */ 896 spinlock_t uctxt_lock; /* rcd and user context changes */ 897 /* 898 * per unit status, see also portdata statusp 899 * mapped readonly into user processes so they can get unit and 900 * IB link status cheaply 901 */ 902 u64 *devstatusp; 903 char *freezemsg; /* freeze msg if hw error put chip in freeze */ 904 u32 freezelen; /* max length of freezemsg */ 905 /* timer used to prevent stats overflow, error throttling, etc. */ 906 struct timer_list stats_timer; 907 908 /* timer to verify interrupts work, and fallback if possible */ 909 struct timer_list intrchk_timer; 910 unsigned long ureg_align; /* user register alignment */ 911 912 /* 913 * Protects pioavailshadow, pioavailkernel, pio_need_disarm, and 914 * pio_writing. 915 */ 916 spinlock_t pioavail_lock; 917 /* 918 * index of last buffer to optimize search for next 919 */ 920 u32 last_pio; 921 /* 922 * min kernel pio buffer to optimize search 923 */ 924 u32 min_kernel_pio; 925 /* 926 * Shadow copies of registers; size indicates read access size. 927 * Most of them are readonly, but some are write-only register, 928 * where we manipulate the bits in the shadow copy, and then write 929 * the shadow copy to qlogic_ib. 930 * 931 * We deliberately make most of these 32 bits, since they have 932 * restricted range. For any that we read, we won't to generate 32 933 * bit accesses, since Opteron will generate 2 separate 32 bit HT 934 * transactions for a 64 bit read, and we want to avoid unnecessary 935 * bus transactions. 936 */ 937 938 /* This is the 64 bit group */ 939 940 unsigned long pioavailshadow[6]; 941 /* bitmap of send buffers available for the kernel to use with PIO. */ 942 unsigned long pioavailkernel[6]; 943 /* bitmap of send buffers which need to be disarmed. */ 944 unsigned long pio_need_disarm[3]; 945 /* bitmap of send buffers which are being written to. */ 946 unsigned long pio_writing[3]; 947 /* kr_revision shadow */ 948 u64 revision; 949 /* Base GUID for device (from eeprom, network order) */ 950 __be64 base_guid; 951 952 /* 953 * kr_sendpiobufbase value (chip offset of pio buffers), and the 954 * base of the 2KB buffer s(user processes only use 2K) 955 */ 956 u64 piobufbase; 957 u32 pio2k_bufbase; 958 959 /* these are the "32 bit" regs */ 960 961 /* number of GUIDs in the flash for this interface */ 962 u32 nguid; 963 /* 964 * the following two are 32-bit bitmasks, but {test,clear,set}_bit 965 * all expect bit fields to be "unsigned long" 966 */ 967 unsigned long rcvctrl; /* shadow per device rcvctrl */ 968 unsigned long sendctrl; /* shadow per device sendctrl */ 969 970 /* value we put in kr_rcvhdrcnt */ 971 u32 rcvhdrcnt; 972 /* value we put in kr_rcvhdrsize */ 973 u32 rcvhdrsize; 974 /* value we put in kr_rcvhdrentsize */ 975 u32 rcvhdrentsize; 976 /* kr_ctxtcnt value */ 977 u32 ctxtcnt; 978 /* kr_pagealign value */ 979 u32 palign; 980 /* number of "2KB" PIO buffers */ 981 u32 piobcnt2k; 982 /* size in bytes of "2KB" PIO buffers */ 983 u32 piosize2k; 984 /* max usable size in dwords of a "2KB" PIO buffer before going "4KB" */ 985 u32 piosize2kmax_dwords; 986 /* number of "4KB" PIO buffers */ 987 u32 piobcnt4k; 988 /* size in bytes of "4KB" PIO buffers */ 989 u32 piosize4k; 990 /* kr_rcvegrbase value */ 991 u32 rcvegrbase; 992 /* kr_rcvtidbase value */ 993 u32 rcvtidbase; 994 /* kr_rcvtidcnt value */ 995 u32 rcvtidcnt; 996 /* kr_userregbase */ 997 u32 uregbase; 998 /* shadow the control register contents */ 999 u32 control; 1000 1001 /* chip address space used by 4k pio buffers */ 1002 u32 align4k; 1003 /* size of each rcvegrbuffer */ 1004 u16 rcvegrbufsize; 1005 /* log2 of above */ 1006 u16 rcvegrbufsize_shift; 1007 /* localbus width (1, 2,4,8,16,32) from config space */ 1008 u32 lbus_width; 1009 /* localbus speed in MHz */ 1010 u32 lbus_speed; 1011 int unit; /* unit # of this chip */ 1012 1013 /* start of CHIP_SPEC move to chipspec, but need code changes */ 1014 /* low and high portions of MSI capability/vector */ 1015 u32 msi_lo; 1016 /* saved after PCIe init for restore after reset */ 1017 u32 msi_hi; 1018 /* MSI data (vector) saved for restore */ 1019 u16 msi_data; 1020 /* so we can rewrite it after a chip reset */ 1021 u32 pcibar0; 1022 /* so we can rewrite it after a chip reset */ 1023 u32 pcibar1; 1024 u64 rhdrhead_intr_off; 1025 1026 /* 1027 * ASCII serial number, from flash, large enough for original 1028 * all digit strings, and longer QLogic serial number format 1029 */ 1030 u8 serial[16]; 1031 /* human readable board version */ 1032 u8 boardversion[96]; 1033 u8 lbus_info[32]; /* human readable localbus info */ 1034 /* chip major rev, from qib_revision */ 1035 u8 majrev; 1036 /* chip minor rev, from qib_revision */ 1037 u8 minrev; 1038 1039 /* Misc small ints */ 1040 /* Number of physical ports available */ 1041 u8 num_pports; 1042 /* Lowest context number which can be used by user processes */ 1043 u8 first_user_ctxt; 1044 u8 n_krcv_queues; 1045 u8 qpn_mask; 1046 u8 skip_kctxt_mask; 1047 1048 u16 rhf_offset; /* offset of RHF within receive header entry */ 1049 1050 /* 1051 * GPIO pins for twsi-connected devices, and device code for eeprom 1052 */ 1053 u8 gpio_sda_num; 1054 u8 gpio_scl_num; 1055 u8 twsi_eeprom_dev; 1056 u8 board_atten; 1057 1058 /* Support (including locks) for EEPROM logging of errors and time */ 1059 /* control access to actual counters, timer */ 1060 spinlock_t eep_st_lock; 1061 /* control high-level access to EEPROM */ 1062 struct mutex eep_lock; 1063 uint64_t traffic_wds; 1064 struct qib_diag_client *diag_client; 1065 spinlock_t qib_diag_trans_lock; /* protect diag observer ops */ 1066 struct diag_observer_list_elt *diag_observer_list; 1067 1068 u8 psxmitwait_supported; 1069 /* cycle length of PS* counters in HW (in picoseconds) */ 1070 u16 psxmitwait_check_rate; 1071 /* high volume overflow errors defered to tasklet */ 1072 struct tasklet_struct error_tasklet; 1073 1074 int assigned_node_id; /* NUMA node closest to HCA */ 1075 }; 1076 1077 /* hol_state values */ 1078 #define QIB_HOL_UP 0 1079 #define QIB_HOL_INIT 1 1080 1081 #define QIB_SDMA_SENDCTRL_OP_ENABLE (1U << 0) 1082 #define QIB_SDMA_SENDCTRL_OP_INTENABLE (1U << 1) 1083 #define QIB_SDMA_SENDCTRL_OP_HALT (1U << 2) 1084 #define QIB_SDMA_SENDCTRL_OP_CLEANUP (1U << 3) 1085 #define QIB_SDMA_SENDCTRL_OP_DRAIN (1U << 4) 1086 1087 /* operation types for f_txchk_change() */ 1088 #define TXCHK_CHG_TYPE_DIS1 3 1089 #define TXCHK_CHG_TYPE_ENAB1 2 1090 #define TXCHK_CHG_TYPE_KERN 1 1091 #define TXCHK_CHG_TYPE_USER 0 1092 1093 #define QIB_CHASE_TIME msecs_to_jiffies(145) 1094 #define QIB_CHASE_DIS_TIME msecs_to_jiffies(160) 1095 1096 /* Private data for file operations */ 1097 struct qib_filedata { 1098 struct qib_ctxtdata *rcd; 1099 unsigned subctxt; 1100 unsigned tidcursor; 1101 struct qib_user_sdma_queue *pq; 1102 int rec_cpu_num; /* for cpu affinity; -1 if none */ 1103 }; 1104 1105 extern struct xarray qib_dev_table; 1106 extern struct qib_devdata *qib_lookup(int unit); 1107 extern u32 qib_cpulist_count; 1108 extern unsigned long *qib_cpulist; 1109 extern unsigned qib_cc_table_size; 1110 1111 int qib_init(struct qib_devdata *, int); 1112 int init_chip_wc_pat(struct qib_devdata *dd, u32); 1113 int qib_enable_wc(struct qib_devdata *dd); 1114 void qib_disable_wc(struct qib_devdata *dd); 1115 int qib_count_units(int *npresentp, int *nupp); 1116 int qib_count_active_units(void); 1117 1118 int qib_cdev_init(int minor, const char *name, 1119 const struct file_operations *fops, 1120 struct cdev **cdevp, struct device **devp); 1121 void qib_cdev_cleanup(struct cdev **cdevp, struct device **devp); 1122 int qib_dev_init(void); 1123 void qib_dev_cleanup(void); 1124 1125 int qib_diag_add(struct qib_devdata *); 1126 void qib_diag_remove(struct qib_devdata *); 1127 void qib_handle_e_ibstatuschanged(struct qib_pportdata *, u64); 1128 void qib_sdma_update_tail(struct qib_pportdata *, u16); /* hold sdma_lock */ 1129 1130 int qib_decode_err(struct qib_devdata *dd, char *buf, size_t blen, u64 err); 1131 void qib_bad_intrstatus(struct qib_devdata *); 1132 void qib_handle_urcv(struct qib_devdata *, u64); 1133 1134 /* clean up any per-chip chip-specific stuff */ 1135 void qib_chip_cleanup(struct qib_devdata *); 1136 /* clean up any chip type-specific stuff */ 1137 void qib_chip_done(void); 1138 1139 /* check to see if we have to force ordering for write combining */ 1140 int qib_unordered_wc(void); 1141 void qib_pio_copy(void __iomem *to, const void *from, size_t count); 1142 1143 void qib_disarm_piobufs(struct qib_devdata *, unsigned, unsigned); 1144 int qib_disarm_piobufs_ifneeded(struct qib_ctxtdata *); 1145 void qib_disarm_piobufs_set(struct qib_devdata *, unsigned long *, unsigned); 1146 void qib_cancel_sends(struct qib_pportdata *); 1147 1148 int qib_create_rcvhdrq(struct qib_devdata *, struct qib_ctxtdata *); 1149 int qib_setup_eagerbufs(struct qib_ctxtdata *); 1150 void qib_set_ctxtcnt(struct qib_devdata *); 1151 int qib_create_ctxts(struct qib_devdata *dd); 1152 struct qib_ctxtdata *qib_create_ctxtdata(struct qib_pportdata *, u32, int); 1153 int qib_init_pportdata(struct qib_pportdata *, struct qib_devdata *, u8, u8); 1154 void qib_free_ctxtdata(struct qib_devdata *, struct qib_ctxtdata *); 1155 1156 u32 qib_kreceive(struct qib_ctxtdata *, u32 *, u32 *); 1157 int qib_reset_device(int); 1158 int qib_wait_linkstate(struct qib_pportdata *, u32, int); 1159 int qib_set_linkstate(struct qib_pportdata *, u8); 1160 int qib_set_mtu(struct qib_pportdata *, u16); 1161 int qib_set_lid(struct qib_pportdata *, u32, u8); 1162 void qib_hol_down(struct qib_pportdata *); 1163 void qib_hol_init(struct qib_pportdata *); 1164 void qib_hol_up(struct qib_pportdata *); 1165 void qib_hol_event(struct timer_list *); 1166 void qib_disable_after_error(struct qib_devdata *); 1167 int qib_set_uevent_bits(struct qib_pportdata *, const int); 1168 1169 /* for use in system calls, where we want to know device type, etc. */ 1170 #define ctxt_fp(fp) \ 1171 (((struct qib_filedata *)(fp)->private_data)->rcd) 1172 #define subctxt_fp(fp) \ 1173 (((struct qib_filedata *)(fp)->private_data)->subctxt) 1174 #define tidcursor_fp(fp) \ 1175 (((struct qib_filedata *)(fp)->private_data)->tidcursor) 1176 #define user_sdma_queue_fp(fp) \ 1177 (((struct qib_filedata *)(fp)->private_data)->pq) 1178 1179 static inline struct qib_devdata *dd_from_ppd(struct qib_pportdata *ppd) 1180 { 1181 return ppd->dd; 1182 } 1183 1184 static inline struct qib_devdata *dd_from_dev(struct qib_ibdev *dev) 1185 { 1186 return container_of(dev, struct qib_devdata, verbs_dev); 1187 } 1188 1189 static inline struct qib_devdata *dd_from_ibdev(struct ib_device *ibdev) 1190 { 1191 return dd_from_dev(to_idev(ibdev)); 1192 } 1193 1194 static inline struct qib_pportdata *ppd_from_ibp(struct qib_ibport *ibp) 1195 { 1196 return container_of(ibp, struct qib_pportdata, ibport_data); 1197 } 1198 1199 static inline struct qib_ibport *to_iport(struct ib_device *ibdev, u32 port) 1200 { 1201 struct qib_devdata *dd = dd_from_ibdev(ibdev); 1202 u32 pidx = port - 1; /* IB number port from 1, hdw from 0 */ 1203 1204 WARN_ON(pidx >= dd->num_pports); 1205 return &dd->pport[pidx].ibport_data; 1206 } 1207 1208 /* 1209 * values for dd->flags (_device_ related flags) and 1210 */ 1211 #define QIB_HAS_LINK_LATENCY 0x1 /* supports link latency (IB 1.2) */ 1212 #define QIB_INITTED 0x2 /* chip and driver up and initted */ 1213 #define QIB_DOING_RESET 0x4 /* in the middle of doing chip reset */ 1214 #define QIB_PRESENT 0x8 /* chip accesses can be done */ 1215 #define QIB_PIO_FLUSH_WC 0x10 /* Needs Write combining flush for PIO */ 1216 #define QIB_HAS_THRESH_UPDATE 0x40 1217 #define QIB_HAS_SDMA_TIMEOUT 0x80 1218 #define QIB_USE_SPCL_TRIG 0x100 /* SpecialTrigger launch enabled */ 1219 #define QIB_NODMA_RTAIL 0x200 /* rcvhdrtail register DMA enabled */ 1220 #define QIB_HAS_INTX 0x800 /* Supports INTx interrupts */ 1221 #define QIB_HAS_SEND_DMA 0x1000 /* Supports Send DMA */ 1222 #define QIB_HAS_VLSUPP 0x2000 /* Supports multiple VLs; PBC different */ 1223 #define QIB_HAS_HDRSUPP 0x4000 /* Supports header suppression */ 1224 #define QIB_BADINTR 0x8000 /* severe interrupt problems */ 1225 #define QIB_DCA_ENABLED 0x10000 /* Direct Cache Access enabled */ 1226 #define QIB_HAS_QSFP 0x20000 /* device (card instance) has QSFP */ 1227 #define QIB_SHUTDOWN 0x40000 /* device is shutting down */ 1228 1229 /* 1230 * values for ppd->lflags (_ib_port_ related flags) 1231 */ 1232 #define QIBL_LINKV 0x1 /* IB link state valid */ 1233 #define QIBL_LINKDOWN 0x8 /* IB link is down */ 1234 #define QIBL_LINKINIT 0x10 /* IB link level is up */ 1235 #define QIBL_LINKARMED 0x20 /* IB link is ARMED */ 1236 #define QIBL_LINKACTIVE 0x40 /* IB link is ACTIVE */ 1237 /* leave a gap for more IB-link state */ 1238 #define QIBL_IB_AUTONEG_INPROG 0x1000 /* non-IBTA DDR/QDR neg active */ 1239 #define QIBL_IB_AUTONEG_FAILED 0x2000 /* non-IBTA DDR/QDR neg failed */ 1240 #define QIBL_IB_LINK_DISABLED 0x4000 /* Linkdown-disable forced, 1241 * Do not try to bring up */ 1242 #define QIBL_IB_FORCE_NOTIFY 0x8000 /* force notify on next ib change */ 1243 1244 /* IB dword length mask in PBC (lower 11 bits); same for all chips */ 1245 #define QIB_PBC_LENGTH_MASK ((1 << 11) - 1) 1246 1247 1248 /* ctxt_flag bit offsets */ 1249 /* waiting for a packet to arrive */ 1250 #define QIB_CTXT_WAITING_RCV 2 1251 /* master has not finished initializing */ 1252 #define QIB_CTXT_MASTER_UNINIT 4 1253 /* waiting for an urgent packet to arrive */ 1254 #define QIB_CTXT_WAITING_URG 5 1255 1256 /* free up any allocated data at closes */ 1257 void qib_free_data(struct qib_ctxtdata *dd); 1258 void qib_chg_pioavailkernel(struct qib_devdata *, unsigned, unsigned, 1259 u32, struct qib_ctxtdata *); 1260 struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *, 1261 const struct pci_device_id *); 1262 struct qib_devdata *qib_init_iba7220_funcs(struct pci_dev *, 1263 const struct pci_device_id *); 1264 struct qib_devdata *qib_init_iba6120_funcs(struct pci_dev *, 1265 const struct pci_device_id *); 1266 void qib_free_devdata(struct qib_devdata *); 1267 struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra); 1268 1269 #define QIB_TWSI_NO_DEV 0xFF 1270 /* Below qib_twsi_ functions must be called with eep_lock held */ 1271 int qib_twsi_reset(struct qib_devdata *dd); 1272 int qib_twsi_blk_rd(struct qib_devdata *dd, int dev, int addr, void *buffer, 1273 int len); 1274 int qib_twsi_blk_wr(struct qib_devdata *dd, int dev, int addr, 1275 const void *buffer, int len); 1276 void qib_get_eeprom_info(struct qib_devdata *); 1277 void qib_dump_lookup_output_queue(struct qib_devdata *); 1278 void qib_force_pio_avail_update(struct qib_devdata *); 1279 void qib_clear_symerror_on_linkup(struct timer_list *t); 1280 1281 /* 1282 * Set LED override, only the two LSBs have "public" meaning, but 1283 * any non-zero value substitutes them for the Link and LinkTrain 1284 * LED states. 1285 */ 1286 #define QIB_LED_PHYS 1 /* Physical (linktraining) GREEN LED */ 1287 #define QIB_LED_LOG 2 /* Logical (link) YELLOW LED */ 1288 void qib_set_led_override(struct qib_pportdata *ppd, unsigned int val); 1289 1290 /* send dma routines */ 1291 int qib_setup_sdma(struct qib_pportdata *); 1292 void qib_teardown_sdma(struct qib_pportdata *); 1293 void __qib_sdma_intr(struct qib_pportdata *); 1294 void qib_sdma_intr(struct qib_pportdata *); 1295 void qib_user_sdma_send_desc(struct qib_pportdata *dd, 1296 struct list_head *pktlist); 1297 int qib_sdma_verbs_send(struct qib_pportdata *, struct rvt_sge_state *, 1298 u32, struct qib_verbs_txreq *); 1299 /* ppd->sdma_lock should be locked before calling this. */ 1300 int qib_sdma_make_progress(struct qib_pportdata *dd); 1301 1302 /* must be called under qib_sdma_lock */ 1303 static inline u16 qib_sdma_descq_freecnt(const struct qib_pportdata *ppd) 1304 { 1305 return ppd->sdma_descq_cnt - 1306 (ppd->sdma_descq_added - ppd->sdma_descq_removed) - 1; 1307 } 1308 1309 static inline int __qib_sdma_running(struct qib_pportdata *ppd) 1310 { 1311 return ppd->sdma_state.current_state == qib_sdma_state_s99_running; 1312 } 1313 int qib_sdma_running(struct qib_pportdata *); 1314 void dump_sdma_state(struct qib_pportdata *ppd); 1315 void __qib_sdma_process_event(struct qib_pportdata *, enum qib_sdma_events); 1316 void qib_sdma_process_event(struct qib_pportdata *, enum qib_sdma_events); 1317 1318 /* 1319 * number of words used for protocol header if not set by qib_userinit(); 1320 */ 1321 #define QIB_DFLT_RCVHDRSIZE 9 1322 1323 /* 1324 * We need to be able to handle an IB header of at least 24 dwords. 1325 * We need the rcvhdrq large enough to handle largest IB header, but 1326 * still have room for a 2KB MTU standard IB packet. 1327 * Additionally, some processor/memory controller combinations 1328 * benefit quite strongly from having the DMA'ed data be cacheline 1329 * aligned and a cacheline multiple, so we set the size to 32 dwords 1330 * (2 64-byte primary cachelines for pretty much all processors of 1331 * interest). The alignment hurts nothing, other than using somewhat 1332 * more memory. 1333 */ 1334 #define QIB_RCVHDR_ENTSIZE 32 1335 1336 int qib_get_user_pages(unsigned long, size_t, struct page **); 1337 void qib_release_user_pages(struct page **, size_t); 1338 int qib_eeprom_read(struct qib_devdata *, u8, void *, int); 1339 int qib_eeprom_write(struct qib_devdata *, u8, const void *, int); 1340 u32 __iomem *qib_getsendbuf_range(struct qib_devdata *, u32 *, u32, u32); 1341 void qib_sendbuf_done(struct qib_devdata *, unsigned); 1342 1343 static inline void qib_clear_rcvhdrtail(const struct qib_ctxtdata *rcd) 1344 { 1345 *((u64 *) rcd->rcvhdrtail_kvaddr) = 0ULL; 1346 } 1347 1348 static inline u32 qib_get_rcvhdrtail(const struct qib_ctxtdata *rcd) 1349 { 1350 /* 1351 * volatile because it's a DMA target from the chip, routine is 1352 * inlined, and don't want register caching or reordering. 1353 */ 1354 return (u32) le64_to_cpu( 1355 *((volatile __le64 *)rcd->rcvhdrtail_kvaddr)); /* DMA'ed */ 1356 } 1357 1358 /* 1359 * sysfs interface. 1360 */ 1361 1362 extern const char ib_qib_version[]; 1363 extern const struct attribute_group qib_attr_group; 1364 extern const struct attribute_group *qib_attr_port_groups[]; 1365 1366 int qib_device_create(struct qib_devdata *); 1367 void qib_device_remove(struct qib_devdata *); 1368 1369 /* Hook for sysfs read of QSFP */ 1370 extern int qib_qsfp_dump(struct qib_pportdata *ppd, char *buf, int len); 1371 1372 int __init qib_init_qibfs(void); 1373 int __exit qib_exit_qibfs(void); 1374 1375 int qibfs_add(struct qib_devdata *); 1376 int qibfs_remove(struct qib_devdata *); 1377 1378 int qib_pcie_init(struct pci_dev *, const struct pci_device_id *); 1379 int qib_pcie_ddinit(struct qib_devdata *, struct pci_dev *, 1380 const struct pci_device_id *); 1381 void qib_pcie_ddcleanup(struct qib_devdata *); 1382 int qib_pcie_params(struct qib_devdata *dd, u32 minw, u32 *nent); 1383 void qib_free_irq(struct qib_devdata *dd); 1384 int qib_reinit_intr(struct qib_devdata *dd); 1385 void qib_pcie_getcmd(struct qib_devdata *, u16 *, u8 *, u8 *); 1386 void qib_pcie_reenable(struct qib_devdata *, u16, u8, u8); 1387 /* interrupts for device */ 1388 u64 qib_int_counter(struct qib_devdata *); 1389 /* interrupt for all devices */ 1390 u64 qib_sps_ints(void); 1391 1392 /* 1393 * dma_addr wrappers - all 0's invalid for hw 1394 */ 1395 int qib_map_page(struct pci_dev *d, struct page *p, dma_addr_t *daddr); 1396 struct pci_dev *qib_get_pci_dev(struct rvt_dev_info *rdi); 1397 1398 /* 1399 * Flush write combining store buffers (if present) and perform a write 1400 * barrier. 1401 */ 1402 static inline void qib_flush_wc(void) 1403 { 1404 #if defined(CONFIG_X86_64) 1405 asm volatile("sfence" : : : "memory"); 1406 #else 1407 wmb(); /* no reorder around wc flush */ 1408 #endif 1409 } 1410 1411 /* global module parameter variables */ 1412 extern unsigned qib_ibmtu; 1413 extern ushort qib_cfgctxts; 1414 extern ushort qib_num_cfg_vls; 1415 extern ushort qib_mini_init; /* If set, do few (ideally 0) writes to chip */ 1416 extern unsigned qib_n_krcv_queues; 1417 extern unsigned qib_sdma_fetch_arb; 1418 extern unsigned qib_compat_ddr_negotiate; 1419 extern int qib_special_trigger; 1420 extern unsigned qib_numa_aware; 1421 1422 extern struct mutex qib_mutex; 1423 1424 /* Number of seconds before our card status check... */ 1425 #define STATUS_TIMEOUT 60 1426 1427 #define QIB_DRV_NAME "ib_qib" 1428 #define QIB_USER_MINOR_BASE 0 1429 #define QIB_TRACE_MINOR 127 1430 #define QIB_DIAGPKT_MINOR 128 1431 #define QIB_DIAG_MINOR_BASE 129 1432 #define QIB_NMINORS 255 1433 1434 #define PCI_VENDOR_ID_PATHSCALE 0x1fc1 1435 #define PCI_VENDOR_ID_QLOGIC 0x1077 1436 #define PCI_DEVICE_ID_QLOGIC_IB_6120 0x10 1437 #define PCI_DEVICE_ID_QLOGIC_IB_7220 0x7220 1438 #define PCI_DEVICE_ID_QLOGIC_IB_7322 0x7322 1439 1440 /* 1441 * qib_early_err is used (only!) to print early errors before devdata is 1442 * allocated, or when dd->pcidev may not be valid, and at the tail end of 1443 * cleanup when devdata may have been freed, etc. qib_dev_porterr is 1444 * the same as qib_dev_err, but is used when the message really needs 1445 * the IB port# to be definitive as to what's happening.. 1446 * All of these go to the trace log, and the trace log entry is done 1447 * first to avoid possible serial port delays from printk. 1448 */ 1449 #define qib_early_err(dev, fmt, ...) \ 1450 dev_err(dev, fmt, ##__VA_ARGS__) 1451 1452 #define qib_dev_err(dd, fmt, ...) \ 1453 dev_err(&(dd)->pcidev->dev, "%s: " fmt, \ 1454 rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__) 1455 1456 #define qib_dev_warn(dd, fmt, ...) \ 1457 dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \ 1458 rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__) 1459 1460 #define qib_dev_porterr(dd, port, fmt, ...) \ 1461 dev_err(&(dd)->pcidev->dev, "%s: IB%u:%u " fmt, \ 1462 rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), (dd)->unit, (port), \ 1463 ##__VA_ARGS__) 1464 1465 #define qib_devinfo(pcidev, fmt, ...) \ 1466 dev_info(&(pcidev)->dev, fmt, ##__VA_ARGS__) 1467 1468 /* 1469 * this is used for formatting hw error messages... 1470 */ 1471 struct qib_hwerror_msgs { 1472 u64 mask; 1473 const char *msg; 1474 size_t sz; 1475 }; 1476 1477 #define QLOGIC_IB_HWE_MSG(a, b) { .mask = a, .msg = b } 1478 1479 /* in qib_intr.c... */ 1480 void qib_format_hwerrors(u64 hwerrs, 1481 const struct qib_hwerror_msgs *hwerrmsgs, 1482 size_t nhwerrmsgs, char *msg, size_t lmsg); 1483 1484 void qib_stop_send_queue(struct rvt_qp *qp); 1485 void qib_quiesce_qp(struct rvt_qp *qp); 1486 void qib_flush_qp_waiters(struct rvt_qp *qp); 1487 int qib_mtu_to_path_mtu(u32 mtu); 1488 u32 qib_mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu); 1489 void qib_notify_error_qp(struct rvt_qp *qp); 1490 int qib_get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp, 1491 struct ib_qp_attr *attr); 1492 1493 #endif /* _QIB_KERNEL_H */ 1494