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 <rdma/ib_hdrs.h> 56 #include <rdma/rdma_vt.h> 57 58 #include "qib_common.h" 59 #include "qib_verbs.h" 60 61 /* only s/w major version of QLogic_IB we can handle */ 62 #define QIB_CHIP_VERS_MAJ 2U 63 64 /* don't care about this except printing */ 65 #define QIB_CHIP_VERS_MIN 0U 66 67 /* The Organization Unique Identifier (Mfg code), and its position in GUID */ 68 #define QIB_OUI 0x001175 69 #define QIB_OUI_LSB 40 70 71 /* 72 * per driver stats, either not device nor port-specific, or 73 * summed over all of the devices and ports. 74 * They are described by name via ipathfs filesystem, so layout 75 * and number of elements can change without breaking compatibility. 76 * If members are added or deleted qib_statnames[] in qib_fs.c must 77 * change to match. 78 */ 79 struct qlogic_ib_stats { 80 __u64 sps_ints; /* number of interrupts handled */ 81 __u64 sps_errints; /* number of error interrupts */ 82 __u64 sps_txerrs; /* tx-related packet errors */ 83 __u64 sps_rcverrs; /* non-crc rcv packet errors */ 84 __u64 sps_hwerrs; /* hardware errors reported (parity, etc.) */ 85 __u64 sps_nopiobufs; /* no pio bufs avail from kernel */ 86 __u64 sps_ctxts; /* number of contexts currently open */ 87 __u64 sps_lenerrs; /* number of kernel packets where RHF != LRH len */ 88 __u64 sps_buffull; 89 __u64 sps_hdrfull; 90 }; 91 92 extern struct qlogic_ib_stats qib_stats; 93 extern const struct pci_error_handlers qib_pci_err_handler; 94 95 #define QIB_CHIP_SWVERSION QIB_CHIP_VERS_MAJ 96 /* 97 * First-cut critierion for "device is active" is 98 * two thousand dwords combined Tx, Rx traffic per 99 * 5-second interval. SMA packets are 64 dwords, 100 * and occur "a few per second", presumably each way. 101 */ 102 #define QIB_TRAFFIC_ACTIVE_THRESHOLD (2000) 103 104 /* 105 * Below contains all data related to a single context (formerly called port). 106 */ 107 108 #ifdef CONFIG_DEBUG_FS 109 struct qib_opcode_stats_perctx; 110 #endif 111 112 struct qib_ctxtdata { 113 void **rcvegrbuf; 114 dma_addr_t *rcvegrbuf_phys; 115 /* rcvhdrq base, needs mmap before useful */ 116 void *rcvhdrq; 117 /* kernel virtual address where hdrqtail is updated */ 118 void *rcvhdrtail_kvaddr; 119 /* 120 * temp buffer for expected send setup, allocated at open, instead 121 * of each setup call 122 */ 123 void *tid_pg_list; 124 /* 125 * Shared page for kernel to signal user processes that send buffers 126 * need disarming. The process should call QIB_CMD_DISARM_BUFS 127 * or QIB_CMD_ACK_EVENT with IPATH_EVENT_DISARM_BUFS set. 128 */ 129 unsigned long *user_event_mask; 130 /* when waiting for rcv or pioavail */ 131 wait_queue_head_t wait; 132 /* 133 * rcvegr bufs base, physical, must fit 134 * in 44 bits so 32 bit programs mmap64 44 bit works) 135 */ 136 dma_addr_t rcvegr_phys; 137 /* mmap of hdrq, must fit in 44 bits */ 138 dma_addr_t rcvhdrq_phys; 139 dma_addr_t rcvhdrqtailaddr_phys; 140 141 /* 142 * number of opens (including slave sub-contexts) on this instance 143 * (ignoring forks, dup, etc. for now) 144 */ 145 int cnt; 146 /* 147 * how much space to leave at start of eager TID entries for 148 * protocol use, on each TID 149 */ 150 /* instead of calculating it */ 151 unsigned ctxt; 152 /* local node of context */ 153 int node_id; 154 /* non-zero if ctxt is being shared. */ 155 u16 subctxt_cnt; 156 /* non-zero if ctxt is being shared. */ 157 u16 subctxt_id; 158 /* number of eager TID entries. */ 159 u16 rcvegrcnt; 160 /* index of first eager TID entry. */ 161 u16 rcvegr_tid_base; 162 /* number of pio bufs for this ctxt (all procs, if shared) */ 163 u32 piocnt; 164 /* first pio buffer for this ctxt */ 165 u32 pio_base; 166 /* chip offset of PIO buffers for this ctxt */ 167 u32 piobufs; 168 /* how many alloc_pages() chunks in rcvegrbuf_pages */ 169 u32 rcvegrbuf_chunks; 170 /* how many egrbufs per chunk */ 171 u16 rcvegrbufs_perchunk; 172 /* ilog2 of above */ 173 u16 rcvegrbufs_perchunk_shift; 174 /* order for rcvegrbuf_pages */ 175 size_t rcvegrbuf_size; 176 /* rcvhdrq size (for freeing) */ 177 size_t rcvhdrq_size; 178 /* per-context flags for fileops/intr communication */ 179 unsigned long flag; 180 /* next expected TID to check when looking for free */ 181 u32 tidcursor; 182 /* WAIT_RCV that timed out, no interrupt */ 183 u32 rcvwait_to; 184 /* WAIT_PIO that timed out, no interrupt */ 185 u32 piowait_to; 186 /* WAIT_RCV already happened, no wait */ 187 u32 rcvnowait; 188 /* WAIT_PIO already happened, no wait */ 189 u32 pionowait; 190 /* total number of polled urgent packets */ 191 u32 urgent; 192 /* saved total number of polled urgent packets for poll edge trigger */ 193 u32 urgent_poll; 194 /* pid of process using this ctxt */ 195 pid_t pid; 196 pid_t subpid[QLOGIC_IB_MAX_SUBCTXT]; 197 /* same size as task_struct .comm[], command that opened context */ 198 char comm[16]; 199 /* pkeys set by this use of this ctxt */ 200 u16 pkeys[4]; 201 /* so file ops can get at unit */ 202 struct qib_devdata *dd; 203 /* so funcs that need physical port can get it easily */ 204 struct qib_pportdata *ppd; 205 /* A page of memory for rcvhdrhead, rcvegrhead, rcvegrtail * N */ 206 void *subctxt_uregbase; 207 /* An array of pages for the eager receive buffers * N */ 208 void *subctxt_rcvegrbuf; 209 /* An array of pages for the eager header queue entries * N */ 210 void *subctxt_rcvhdr_base; 211 /* The version of the library which opened this ctxt */ 212 u32 userversion; 213 /* Bitmask of active slaves */ 214 u32 active_slaves; 215 /* Type of packets or conditions we want to poll for */ 216 u16 poll_type; 217 /* receive packet sequence counter */ 218 u8 seq_cnt; 219 u8 redirect_seq_cnt; 220 /* ctxt rcvhdrq head offset */ 221 u32 head; 222 /* QPs waiting for context processing */ 223 struct list_head qp_wait_list; 224 #ifdef CONFIG_DEBUG_FS 225 /* verbs stats per CTX */ 226 struct qib_opcode_stats_perctx *opstats; 227 #endif 228 }; 229 230 struct rvt_sge_state; 231 232 struct qib_sdma_txreq { 233 int flags; 234 int sg_count; 235 dma_addr_t addr; 236 void (*callback)(struct qib_sdma_txreq *, int); 237 u16 start_idx; /* sdma private */ 238 u16 next_descq_idx; /* sdma private */ 239 struct list_head list; /* sdma private */ 240 }; 241 242 struct qib_sdma_desc { 243 __le64 qw[2]; 244 }; 245 246 struct qib_verbs_txreq { 247 struct qib_sdma_txreq txreq; 248 struct rvt_qp *qp; 249 struct rvt_swqe *wqe; 250 u32 dwords; 251 u16 hdr_dwords; 252 u16 hdr_inx; 253 struct qib_pio_header *align_buf; 254 struct rvt_mregion *mr; 255 struct rvt_sge_state *ss; 256 }; 257 258 #define QIB_SDMA_TXREQ_F_USELARGEBUF 0x1 259 #define QIB_SDMA_TXREQ_F_HEADTOHOST 0x2 260 #define QIB_SDMA_TXREQ_F_INTREQ 0x4 261 #define QIB_SDMA_TXREQ_F_FREEBUF 0x8 262 #define QIB_SDMA_TXREQ_F_FREEDESC 0x10 263 264 #define QIB_SDMA_TXREQ_S_OK 0 265 #define QIB_SDMA_TXREQ_S_SENDERROR 1 266 #define QIB_SDMA_TXREQ_S_ABORTED 2 267 #define QIB_SDMA_TXREQ_S_SHUTDOWN 3 268 269 /* 270 * Get/Set IB link-level config parameters for f_get/set_ib_cfg() 271 * Mostly for MADs that set or query link parameters, also ipath 272 * config interfaces 273 */ 274 #define QIB_IB_CFG_LIDLMC 0 /* LID (LS16b) and Mask (MS16b) */ 275 #define QIB_IB_CFG_LWID_ENB 2 /* allowed Link-width */ 276 #define QIB_IB_CFG_LWID 3 /* currently active Link-width */ 277 #define QIB_IB_CFG_SPD_ENB 4 /* allowed Link speeds */ 278 #define QIB_IB_CFG_SPD 5 /* current Link spd */ 279 #define QIB_IB_CFG_RXPOL_ENB 6 /* Auto-RX-polarity enable */ 280 #define QIB_IB_CFG_LREV_ENB 7 /* Auto-Lane-reversal enable */ 281 #define QIB_IB_CFG_LINKLATENCY 8 /* Link Latency (IB1.2 only) */ 282 #define QIB_IB_CFG_HRTBT 9 /* IB heartbeat off/enable/auto; DDR/QDR only */ 283 #define QIB_IB_CFG_OP_VLS 10 /* operational VLs */ 284 #define QIB_IB_CFG_VL_HIGH_CAP 11 /* num of VL high priority weights */ 285 #define QIB_IB_CFG_VL_LOW_CAP 12 /* num of VL low priority weights */ 286 #define QIB_IB_CFG_OVERRUN_THRESH 13 /* IB overrun threshold */ 287 #define QIB_IB_CFG_PHYERR_THRESH 14 /* IB PHY error threshold */ 288 #define QIB_IB_CFG_LINKDEFAULT 15 /* IB link default (sleep/poll) */ 289 #define QIB_IB_CFG_PKEYS 16 /* update partition keys */ 290 #define QIB_IB_CFG_MTU 17 /* update MTU in IBC */ 291 #define QIB_IB_CFG_LSTATE 18 /* update linkcmd and linkinitcmd in IBC */ 292 #define QIB_IB_CFG_VL_HIGH_LIMIT 19 293 #define QIB_IB_CFG_PMA_TICKS 20 /* PMA sample tick resolution */ 294 #define QIB_IB_CFG_PORT 21 /* switch port we are connected to */ 295 296 /* 297 * for CFG_LSTATE: LINKCMD in upper 16 bits, LINKINITCMD in lower 16 298 * IB_LINKINITCMD_POLL and SLEEP are also used as set/get values for 299 * QIB_IB_CFG_LINKDEFAULT cmd 300 */ 301 #define IB_LINKCMD_DOWN (0 << 16) 302 #define IB_LINKCMD_ARMED (1 << 16) 303 #define IB_LINKCMD_ACTIVE (2 << 16) 304 #define IB_LINKINITCMD_NOP 0 305 #define IB_LINKINITCMD_POLL 1 306 #define IB_LINKINITCMD_SLEEP 2 307 #define IB_LINKINITCMD_DISABLE 3 308 309 /* 310 * valid states passed to qib_set_linkstate() user call 311 */ 312 #define QIB_IB_LINKDOWN 0 313 #define QIB_IB_LINKARM 1 314 #define QIB_IB_LINKACTIVE 2 315 #define QIB_IB_LINKDOWN_ONLY 3 316 #define QIB_IB_LINKDOWN_SLEEP 4 317 #define QIB_IB_LINKDOWN_DISABLE 5 318 319 /* 320 * These 7 values (SDR, DDR, and QDR may be ORed for auto-speed 321 * negotiation) are used for the 3rd argument to path_f_set_ib_cfg 322 * with cmd QIB_IB_CFG_SPD_ENB, by direct calls or via sysfs. They 323 * are also the the possible values for qib_link_speed_enabled and active 324 * The values were chosen to match values used within the IB spec. 325 */ 326 #define QIB_IB_SDR 1 327 #define QIB_IB_DDR 2 328 #define QIB_IB_QDR 4 329 330 #define QIB_DEFAULT_MTU 4096 331 332 /* max number of IB ports supported per HCA */ 333 #define QIB_MAX_IB_PORTS 2 334 335 /* 336 * Possible IB config parameters for f_get/set_ib_table() 337 */ 338 #define QIB_IB_TBL_VL_HIGH_ARB 1 /* Get/set VL high priority weights */ 339 #define QIB_IB_TBL_VL_LOW_ARB 2 /* Get/set VL low priority weights */ 340 341 /* 342 * Possible "operations" for f_rcvctrl(ppd, op, ctxt) 343 * these are bits so they can be combined, e.g. 344 * QIB_RCVCTRL_INTRAVAIL_ENB | QIB_RCVCTRL_CTXT_ENB 345 */ 346 #define QIB_RCVCTRL_TAILUPD_ENB 0x01 347 #define QIB_RCVCTRL_TAILUPD_DIS 0x02 348 #define QIB_RCVCTRL_CTXT_ENB 0x04 349 #define QIB_RCVCTRL_CTXT_DIS 0x08 350 #define QIB_RCVCTRL_INTRAVAIL_ENB 0x10 351 #define QIB_RCVCTRL_INTRAVAIL_DIS 0x20 352 #define QIB_RCVCTRL_PKEY_ENB 0x40 /* Note, default is enabled */ 353 #define QIB_RCVCTRL_PKEY_DIS 0x80 354 #define QIB_RCVCTRL_BP_ENB 0x0100 355 #define QIB_RCVCTRL_BP_DIS 0x0200 356 #define QIB_RCVCTRL_TIDFLOW_ENB 0x0400 357 #define QIB_RCVCTRL_TIDFLOW_DIS 0x0800 358 359 /* 360 * Possible "operations" for f_sendctrl(ppd, op, var) 361 * these are bits so they can be combined, e.g. 362 * QIB_SENDCTRL_BUFAVAIL_ENB | QIB_SENDCTRL_ENB 363 * Some operations (e.g. DISARM, ABORT) are known to 364 * be "one-shot", so do not modify shadow. 365 */ 366 #define QIB_SENDCTRL_DISARM (0x1000) 367 #define QIB_SENDCTRL_DISARM_BUF(bufn) ((bufn) | QIB_SENDCTRL_DISARM) 368 /* available (0x2000) */ 369 #define QIB_SENDCTRL_AVAIL_DIS (0x4000) 370 #define QIB_SENDCTRL_AVAIL_ENB (0x8000) 371 #define QIB_SENDCTRL_AVAIL_BLIP (0x10000) 372 #define QIB_SENDCTRL_SEND_DIS (0x20000) 373 #define QIB_SENDCTRL_SEND_ENB (0x40000) 374 #define QIB_SENDCTRL_FLUSH (0x80000) 375 #define QIB_SENDCTRL_CLEAR (0x100000) 376 #define QIB_SENDCTRL_DISARM_ALL (0x200000) 377 378 /* 379 * These are the generic indices for requesting per-port 380 * counter values via the f_portcntr function. They 381 * are always returned as 64 bit values, although most 382 * are 32 bit counters. 383 */ 384 /* send-related counters */ 385 #define QIBPORTCNTR_PKTSEND 0U 386 #define QIBPORTCNTR_WORDSEND 1U 387 #define QIBPORTCNTR_PSXMITDATA 2U 388 #define QIBPORTCNTR_PSXMITPKTS 3U 389 #define QIBPORTCNTR_PSXMITWAIT 4U 390 #define QIBPORTCNTR_SENDSTALL 5U 391 /* receive-related counters */ 392 #define QIBPORTCNTR_PKTRCV 6U 393 #define QIBPORTCNTR_PSRCVDATA 7U 394 #define QIBPORTCNTR_PSRCVPKTS 8U 395 #define QIBPORTCNTR_RCVEBP 9U 396 #define QIBPORTCNTR_RCVOVFL 10U 397 #define QIBPORTCNTR_WORDRCV 11U 398 /* IB link related error counters */ 399 #define QIBPORTCNTR_RXLOCALPHYERR 12U 400 #define QIBPORTCNTR_RXVLERR 13U 401 #define QIBPORTCNTR_ERRICRC 14U 402 #define QIBPORTCNTR_ERRVCRC 15U 403 #define QIBPORTCNTR_ERRLPCRC 16U 404 #define QIBPORTCNTR_BADFORMAT 17U 405 #define QIBPORTCNTR_ERR_RLEN 18U 406 #define QIBPORTCNTR_IBSYMBOLERR 19U 407 #define QIBPORTCNTR_INVALIDRLEN 20U 408 #define QIBPORTCNTR_UNSUPVL 21U 409 #define QIBPORTCNTR_EXCESSBUFOVFL 22U 410 #define QIBPORTCNTR_ERRLINK 23U 411 #define QIBPORTCNTR_IBLINKDOWN 24U 412 #define QIBPORTCNTR_IBLINKERRRECOV 25U 413 #define QIBPORTCNTR_LLI 26U 414 /* other error counters */ 415 #define QIBPORTCNTR_RXDROPPKT 27U 416 #define QIBPORTCNTR_VL15PKTDROP 28U 417 #define QIBPORTCNTR_ERRPKEY 29U 418 #define QIBPORTCNTR_KHDROVFL 30U 419 /* sampling counters (these are actually control registers) */ 420 #define QIBPORTCNTR_PSINTERVAL 31U 421 #define QIBPORTCNTR_PSSTART 32U 422 #define QIBPORTCNTR_PSSTAT 33U 423 424 /* how often we check for packet activity for "power on hours (in seconds) */ 425 #define ACTIVITY_TIMER 5 426 427 #define MAX_NAME_SIZE 64 428 429 #ifdef CONFIG_INFINIBAND_QIB_DCA 430 struct qib_irq_notify; 431 #endif 432 433 struct qib_msix_entry { 434 void *arg; 435 #ifdef CONFIG_INFINIBAND_QIB_DCA 436 int dca; 437 int rcv; 438 struct qib_irq_notify *notifier; 439 #endif 440 cpumask_var_t mask; 441 }; 442 443 /* Below is an opaque struct. Each chip (device) can maintain 444 * private data needed for its operation, but not germane to the 445 * rest of the driver. For convenience, we define another that 446 * is chip-specific, per-port 447 */ 448 struct qib_chip_specific; 449 struct qib_chipport_specific; 450 451 enum qib_sdma_states { 452 qib_sdma_state_s00_hw_down, 453 qib_sdma_state_s10_hw_start_up_wait, 454 qib_sdma_state_s20_idle, 455 qib_sdma_state_s30_sw_clean_up_wait, 456 qib_sdma_state_s40_hw_clean_up_wait, 457 qib_sdma_state_s50_hw_halt_wait, 458 qib_sdma_state_s99_running, 459 }; 460 461 enum qib_sdma_events { 462 qib_sdma_event_e00_go_hw_down, 463 qib_sdma_event_e10_go_hw_start, 464 qib_sdma_event_e20_hw_started, 465 qib_sdma_event_e30_go_running, 466 qib_sdma_event_e40_sw_cleaned, 467 qib_sdma_event_e50_hw_cleaned, 468 qib_sdma_event_e60_hw_halted, 469 qib_sdma_event_e70_go_idle, 470 qib_sdma_event_e7220_err_halted, 471 qib_sdma_event_e7322_err_halted, 472 qib_sdma_event_e90_timer_tick, 473 }; 474 475 struct sdma_set_state_action { 476 unsigned op_enable:1; 477 unsigned op_intenable:1; 478 unsigned op_halt:1; 479 unsigned op_drain:1; 480 unsigned go_s99_running_tofalse:1; 481 unsigned go_s99_running_totrue:1; 482 }; 483 484 struct qib_sdma_state { 485 struct kref kref; 486 struct completion comp; 487 enum qib_sdma_states current_state; 488 struct sdma_set_state_action *set_state_action; 489 unsigned current_op; 490 unsigned go_s99_running; 491 unsigned first_sendbuf; 492 unsigned last_sendbuf; /* really last +1 */ 493 /* debugging/devel */ 494 enum qib_sdma_states previous_state; 495 unsigned previous_op; 496 enum qib_sdma_events last_event; 497 }; 498 499 struct xmit_wait { 500 struct timer_list timer; 501 u64 counter; 502 u8 flags; 503 struct cache { 504 u64 psxmitdata; 505 u64 psrcvdata; 506 u64 psxmitpkts; 507 u64 psrcvpkts; 508 u64 psxmitwait; 509 } counter_cache; 510 }; 511 512 /* 513 * The structure below encapsulates data relevant to a physical IB Port. 514 * Current chips support only one such port, but the separation 515 * clarifies things a bit. Note that to conform to IB conventions, 516 * port-numbers are one-based. The first or only port is port1. 517 */ 518 struct qib_pportdata { 519 struct qib_ibport ibport_data; 520 521 struct qib_devdata *dd; 522 struct qib_chippport_specific *cpspec; /* chip-specific per-port */ 523 struct kobject pport_kobj; 524 struct kobject pport_cc_kobj; 525 struct kobject sl2vl_kobj; 526 struct kobject diagc_kobj; 527 528 /* GUID for this interface, in network order */ 529 __be64 guid; 530 531 /* QIB_POLL, etc. link-state specific flags, per port */ 532 u32 lflags; 533 /* qib_lflags driver is waiting for */ 534 u32 state_wanted; 535 spinlock_t lflags_lock; 536 537 /* ref count for each pkey */ 538 atomic_t pkeyrefs[4]; 539 540 /* 541 * this address is mapped readonly into user processes so they can 542 * get status cheaply, whenever they want. One qword of status per port 543 */ 544 u64 *statusp; 545 546 /* SendDMA related entries */ 547 548 /* read mostly */ 549 struct qib_sdma_desc *sdma_descq; 550 struct workqueue_struct *qib_wq; 551 struct qib_sdma_state sdma_state; 552 dma_addr_t sdma_descq_phys; 553 volatile __le64 *sdma_head_dma; /* DMA'ed by chip */ 554 dma_addr_t sdma_head_phys; 555 u16 sdma_descq_cnt; 556 557 /* read/write using lock */ 558 spinlock_t sdma_lock ____cacheline_aligned_in_smp; 559 struct list_head sdma_activelist; 560 struct list_head sdma_userpending; 561 u64 sdma_descq_added; 562 u64 sdma_descq_removed; 563 u16 sdma_descq_tail; 564 u16 sdma_descq_head; 565 u8 sdma_generation; 566 u8 sdma_intrequest; 567 568 struct tasklet_struct sdma_sw_clean_up_task 569 ____cacheline_aligned_in_smp; 570 571 wait_queue_head_t state_wait; /* for state_wanted */ 572 573 /* HoL blocking for SMP replies */ 574 unsigned hol_state; 575 struct timer_list hol_timer; 576 577 /* 578 * Shadow copies of registers; size indicates read access size. 579 * Most of them are readonly, but some are write-only register, 580 * where we manipulate the bits in the shadow copy, and then write 581 * the shadow copy to qlogic_ib. 582 * 583 * We deliberately make most of these 32 bits, since they have 584 * restricted range. For any that we read, we won't to generate 32 585 * bit accesses, since Opteron will generate 2 separate 32 bit HT 586 * transactions for a 64 bit read, and we want to avoid unnecessary 587 * bus transactions. 588 */ 589 590 /* This is the 64 bit group */ 591 /* last ibcstatus. opaque outside chip-specific code */ 592 u64 lastibcstat; 593 594 /* these are the "32 bit" regs */ 595 596 /* 597 * the following two are 32-bit bitmasks, but {test,clear,set}_bit 598 * all expect bit fields to be "unsigned long" 599 */ 600 unsigned long p_rcvctrl; /* shadow per-port rcvctrl */ 601 unsigned long p_sendctrl; /* shadow per-port sendctrl */ 602 603 u32 ibmtu; /* The MTU programmed for this unit */ 604 /* 605 * Current max size IB packet (in bytes) including IB headers, that 606 * we can send. Changes when ibmtu changes. 607 */ 608 u32 ibmaxlen; 609 /* 610 * ibmaxlen at init time, limited by chip and by receive buffer 611 * size. Not changed after init. 612 */ 613 u32 init_ibmaxlen; 614 /* LID programmed for this instance */ 615 u16 lid; 616 /* list of pkeys programmed; 0 if not set */ 617 u16 pkeys[4]; 618 /* LID mask control */ 619 u8 lmc; 620 u8 link_width_supported; 621 u8 link_speed_supported; 622 u8 link_width_enabled; 623 u8 link_speed_enabled; 624 u8 link_width_active; 625 u8 link_speed_active; 626 u8 vls_supported; 627 u8 vls_operational; 628 /* Rx Polarity inversion (compensate for ~tx on partner) */ 629 u8 rx_pol_inv; 630 631 u8 hw_pidx; /* physical port index */ 632 u8 port; /* IB port number and index into dd->pports - 1 */ 633 634 u8 delay_mult; 635 636 /* used to override LED behavior */ 637 u8 led_override; /* Substituted for normal value, if non-zero */ 638 u16 led_override_timeoff; /* delta to next timer event */ 639 u8 led_override_vals[2]; /* Alternates per blink-frame */ 640 u8 led_override_phase; /* Just counts, LSB picks from vals[] */ 641 atomic_t led_override_timer_active; 642 /* Used to flash LEDs in override mode */ 643 struct timer_list led_override_timer; 644 struct xmit_wait cong_stats; 645 struct timer_list symerr_clear_timer; 646 647 /* Synchronize access between driver writes and sysfs reads */ 648 spinlock_t cc_shadow_lock 649 ____cacheline_aligned_in_smp; 650 651 /* Shadow copy of the congestion control table */ 652 struct cc_table_shadow *ccti_entries_shadow; 653 654 /* Shadow copy of the congestion control entries */ 655 struct ib_cc_congestion_setting_attr_shadow *congestion_entries_shadow; 656 657 /* List of congestion control table entries */ 658 struct ib_cc_table_entry_shadow *ccti_entries; 659 660 /* 16 congestion entries with each entry corresponding to a SL */ 661 struct ib_cc_congestion_entry_shadow *congestion_entries; 662 663 /* Maximum number of congestion control entries that the agent expects 664 * the manager to send. 665 */ 666 u16 cc_supported_table_entries; 667 668 /* Total number of congestion control table entries */ 669 u16 total_cct_entry; 670 671 /* Bit map identifying service level */ 672 u16 cc_sl_control_map; 673 674 /* maximum congestion control table index */ 675 u16 ccti_limit; 676 677 /* CA's max number of 64 entry units in the congestion control table */ 678 u8 cc_max_table_entries; 679 }; 680 681 /* Observers. Not to be taken lightly, possibly not to ship. */ 682 /* 683 * If a diag read or write is to (bottom <= offset <= top), 684 * the "hoook" is called, allowing, e.g. shadows to be 685 * updated in sync with the driver. struct diag_observer 686 * is the "visible" part. 687 */ 688 struct diag_observer; 689 690 typedef int (*diag_hook) (struct qib_devdata *dd, 691 const struct diag_observer *op, 692 u32 offs, u64 *data, u64 mask, int only_32); 693 694 struct diag_observer { 695 diag_hook hook; 696 u32 bottom; 697 u32 top; 698 }; 699 700 extern int qib_register_observer(struct qib_devdata *dd, 701 const struct diag_observer *op); 702 703 /* Only declared here, not defined. Private to diags */ 704 struct diag_observer_list_elt; 705 706 /* device data struct now contains only "general per-device" info. 707 * fields related to a physical IB port are in a qib_pportdata struct, 708 * described above) while fields only used by a particular chip-type are in 709 * a qib_chipdata struct, whose contents are opaque to this file. 710 */ 711 struct qib_devdata { 712 struct qib_ibdev verbs_dev; /* must be first */ 713 struct list_head list; 714 /* pointers to related structs for this device */ 715 /* pci access data structure */ 716 struct pci_dev *pcidev; 717 struct cdev *user_cdev; 718 struct cdev *diag_cdev; 719 struct device *user_device; 720 struct device *diag_device; 721 722 /* mem-mapped pointer to base of chip regs */ 723 u64 __iomem *kregbase; 724 /* end of mem-mapped chip space excluding sendbuf and user regs */ 725 u64 __iomem *kregend; 726 /* physical address of chip for io_remap, etc. */ 727 resource_size_t physaddr; 728 /* qib_cfgctxts pointers */ 729 struct qib_ctxtdata **rcd; /* Receive Context Data */ 730 731 /* qib_pportdata, points to array of (physical) port-specific 732 * data structs, indexed by pidx (0..n-1) 733 */ 734 struct qib_pportdata *pport; 735 struct qib_chip_specific *cspec; /* chip-specific */ 736 737 /* kvirt address of 1st 2k pio buffer */ 738 void __iomem *pio2kbase; 739 /* kvirt address of 1st 4k pio buffer */ 740 void __iomem *pio4kbase; 741 /* mem-mapped pointer to base of PIO buffers (if using WC PAT) */ 742 void __iomem *piobase; 743 /* mem-mapped pointer to base of user chip regs (if using WC PAT) */ 744 u64 __iomem *userbase; 745 void __iomem *piovl15base; /* base of VL15 buffers, if not WC */ 746 /* 747 * points to area where PIOavail registers will be DMA'ed. 748 * Has to be on a page of it's own, because the page will be 749 * mapped into user program space. This copy is *ONLY* ever 750 * written by DMA, not by the driver! Need a copy per device 751 * when we get to multiple devices 752 */ 753 volatile __le64 *pioavailregs_dma; /* DMA'ed by chip */ 754 /* physical address where updates occur */ 755 dma_addr_t pioavailregs_phys; 756 757 /* device-specific implementations of functions needed by 758 * common code. Contrary to previous consensus, we can't 759 * really just point to a device-specific table, because we 760 * may need to "bend", e.g. *_f_put_tid 761 */ 762 /* fallback to alternate interrupt type if possible */ 763 int (*f_intr_fallback)(struct qib_devdata *); 764 /* hard reset chip */ 765 int (*f_reset)(struct qib_devdata *); 766 void (*f_quiet_serdes)(struct qib_pportdata *); 767 int (*f_bringup_serdes)(struct qib_pportdata *); 768 int (*f_early_init)(struct qib_devdata *); 769 void (*f_clear_tids)(struct qib_devdata *, struct qib_ctxtdata *); 770 void (*f_put_tid)(struct qib_devdata *, u64 __iomem*, 771 u32, unsigned long); 772 void (*f_cleanup)(struct qib_devdata *); 773 void (*f_setextled)(struct qib_pportdata *, u32); 774 /* fill out chip-specific fields */ 775 int (*f_get_base_info)(struct qib_ctxtdata *, struct qib_base_info *); 776 /* free irq */ 777 void (*f_free_irq)(struct qib_devdata *); 778 struct qib_message_header *(*f_get_msgheader) 779 (struct qib_devdata *, __le32 *); 780 void (*f_config_ctxts)(struct qib_devdata *); 781 int (*f_get_ib_cfg)(struct qib_pportdata *, int); 782 int (*f_set_ib_cfg)(struct qib_pportdata *, int, u32); 783 int (*f_set_ib_loopback)(struct qib_pportdata *, const char *); 784 int (*f_get_ib_table)(struct qib_pportdata *, int, void *); 785 int (*f_set_ib_table)(struct qib_pportdata *, int, void *); 786 u32 (*f_iblink_state)(u64); 787 u8 (*f_ibphys_portstate)(u64); 788 void (*f_xgxs_reset)(struct qib_pportdata *); 789 /* per chip actions needed for IB Link up/down changes */ 790 int (*f_ib_updown)(struct qib_pportdata *, int, u64); 791 u32 __iomem *(*f_getsendbuf)(struct qib_pportdata *, u64, u32 *); 792 /* Read/modify/write of GPIO pins (potentially chip-specific */ 793 int (*f_gpio_mod)(struct qib_devdata *dd, u32 out, u32 dir, 794 u32 mask); 795 /* Enable writes to config EEPROM (if supported) */ 796 int (*f_eeprom_wen)(struct qib_devdata *dd, int wen); 797 /* 798 * modify rcvctrl shadow[s] and write to appropriate chip-regs. 799 * see above QIB_RCVCTRL_xxx_ENB/DIS for operations. 800 * (ctxt == -1) means "all contexts", only meaningful for 801 * clearing. Could remove if chip_spec shutdown properly done. 802 */ 803 void (*f_rcvctrl)(struct qib_pportdata *, unsigned int op, 804 int ctxt); 805 /* Read/modify/write sendctrl appropriately for op and port. */ 806 void (*f_sendctrl)(struct qib_pportdata *, u32 op); 807 void (*f_set_intr_state)(struct qib_devdata *, u32); 808 void (*f_set_armlaunch)(struct qib_devdata *, u32); 809 void (*f_wantpiobuf_intr)(struct qib_devdata *, u32); 810 int (*f_late_initreg)(struct qib_devdata *); 811 int (*f_init_sdma_regs)(struct qib_pportdata *); 812 u16 (*f_sdma_gethead)(struct qib_pportdata *); 813 int (*f_sdma_busy)(struct qib_pportdata *); 814 void (*f_sdma_update_tail)(struct qib_pportdata *, u16); 815 void (*f_sdma_set_desc_cnt)(struct qib_pportdata *, unsigned); 816 void (*f_sdma_sendctrl)(struct qib_pportdata *, unsigned); 817 void (*f_sdma_hw_clean_up)(struct qib_pportdata *); 818 void (*f_sdma_hw_start_up)(struct qib_pportdata *); 819 void (*f_sdma_init_early)(struct qib_pportdata *); 820 void (*f_set_cntr_sample)(struct qib_pportdata *, u32, u32); 821 void (*f_update_usrhead)(struct qib_ctxtdata *, u64, u32, u32, u32); 822 u32 (*f_hdrqempty)(struct qib_ctxtdata *); 823 u64 (*f_portcntr)(struct qib_pportdata *, u32); 824 u32 (*f_read_cntrs)(struct qib_devdata *, loff_t, char **, 825 u64 **); 826 u32 (*f_read_portcntrs)(struct qib_devdata *, loff_t, u32, 827 char **, u64 **); 828 u32 (*f_setpbc_control)(struct qib_pportdata *, u32, u8, u8); 829 void (*f_initvl15_bufs)(struct qib_devdata *); 830 void (*f_init_ctxt)(struct qib_ctxtdata *); 831 void (*f_txchk_change)(struct qib_devdata *, u32, u32, u32, 832 struct qib_ctxtdata *); 833 void (*f_writescratch)(struct qib_devdata *, u32); 834 int (*f_tempsense_rd)(struct qib_devdata *, int regnum); 835 #ifdef CONFIG_INFINIBAND_QIB_DCA 836 int (*f_notify_dca)(struct qib_devdata *, unsigned long event); 837 #endif 838 839 char *boardname; /* human readable board info */ 840 841 /* template for writing TIDs */ 842 u64 tidtemplate; 843 /* value to write to free TIDs */ 844 u64 tidinvalid; 845 846 /* number of registers used for pioavail */ 847 u32 pioavregs; 848 /* device (not port) flags, basically device capabilities */ 849 u32 flags; 850 /* last buffer for user use */ 851 u32 lastctxt_piobuf; 852 853 /* reset value */ 854 u64 z_int_counter; 855 /* percpu intcounter */ 856 u64 __percpu *int_counter; 857 858 /* pio bufs allocated per ctxt */ 859 u32 pbufsctxt; 860 /* if remainder on bufs/ctxt, ctxts < extrabuf get 1 extra */ 861 u32 ctxts_extrabuf; 862 /* 863 * number of ctxts configured as max; zero is set to number chip 864 * supports, less gives more pio bufs/ctxt, etc. 865 */ 866 u32 cfgctxts; 867 /* 868 * number of ctxts available for PSM open 869 */ 870 u32 freectxts; 871 872 /* 873 * hint that we should update pioavailshadow before 874 * looking for a PIO buffer 875 */ 876 u32 upd_pio_shadow; 877 878 /* internal debugging stats */ 879 u32 maxpkts_call; 880 u32 avgpkts_call; 881 u64 nopiobufs; 882 883 /* PCI Vendor ID (here for NodeInfo) */ 884 u16 vendorid; 885 /* PCI Device ID (here for NodeInfo) */ 886 u16 deviceid; 887 /* for write combining settings */ 888 int wc_cookie; 889 unsigned long wc_base; 890 unsigned long wc_len; 891 892 /* shadow copy of struct page *'s for exp tid pages */ 893 struct page **pageshadow; 894 /* shadow copy of dma handles for exp tid pages */ 895 dma_addr_t *physshadow; 896 u64 __iomem *egrtidbase; 897 spinlock_t sendctrl_lock; /* protect changes to sendctrl shadow */ 898 /* around rcd and (user ctxts) ctxt_cnt use (intr vs free) */ 899 spinlock_t uctxt_lock; /* rcd and user context changes */ 900 /* 901 * per unit status, see also portdata statusp 902 * mapped readonly into user processes so they can get unit and 903 * IB link status cheaply 904 */ 905 u64 *devstatusp; 906 char *freezemsg; /* freeze msg if hw error put chip in freeze */ 907 u32 freezelen; /* max length of freezemsg */ 908 /* timer used to prevent stats overflow, error throttling, etc. */ 909 struct timer_list stats_timer; 910 911 /* timer to verify interrupts work, and fallback if possible */ 912 struct timer_list intrchk_timer; 913 unsigned long ureg_align; /* user register alignment */ 914 915 /* 916 * Protects pioavailshadow, pioavailkernel, pio_need_disarm, and 917 * pio_writing. 918 */ 919 spinlock_t pioavail_lock; 920 /* 921 * index of last buffer to optimize search for next 922 */ 923 u32 last_pio; 924 /* 925 * min kernel pio buffer to optimize search 926 */ 927 u32 min_kernel_pio; 928 /* 929 * Shadow copies of registers; size indicates read access size. 930 * Most of them are readonly, but some are write-only register, 931 * where we manipulate the bits in the shadow copy, and then write 932 * the shadow copy to qlogic_ib. 933 * 934 * We deliberately make most of these 32 bits, since they have 935 * restricted range. For any that we read, we won't to generate 32 936 * bit accesses, since Opteron will generate 2 separate 32 bit HT 937 * transactions for a 64 bit read, and we want to avoid unnecessary 938 * bus transactions. 939 */ 940 941 /* This is the 64 bit group */ 942 943 unsigned long pioavailshadow[6]; 944 /* bitmap of send buffers available for the kernel to use with PIO. */ 945 unsigned long pioavailkernel[6]; 946 /* bitmap of send buffers which need to be disarmed. */ 947 unsigned long pio_need_disarm[3]; 948 /* bitmap of send buffers which are being written to. */ 949 unsigned long pio_writing[3]; 950 /* kr_revision shadow */ 951 u64 revision; 952 /* Base GUID for device (from eeprom, network order) */ 953 __be64 base_guid; 954 955 /* 956 * kr_sendpiobufbase value (chip offset of pio buffers), and the 957 * base of the 2KB buffer s(user processes only use 2K) 958 */ 959 u64 piobufbase; 960 u32 pio2k_bufbase; 961 962 /* these are the "32 bit" regs */ 963 964 /* number of GUIDs in the flash for this interface */ 965 u32 nguid; 966 /* 967 * the following two are 32-bit bitmasks, but {test,clear,set}_bit 968 * all expect bit fields to be "unsigned long" 969 */ 970 unsigned long rcvctrl; /* shadow per device rcvctrl */ 971 unsigned long sendctrl; /* shadow per device sendctrl */ 972 973 /* value we put in kr_rcvhdrcnt */ 974 u32 rcvhdrcnt; 975 /* value we put in kr_rcvhdrsize */ 976 u32 rcvhdrsize; 977 /* value we put in kr_rcvhdrentsize */ 978 u32 rcvhdrentsize; 979 /* kr_ctxtcnt value */ 980 u32 ctxtcnt; 981 /* kr_pagealign value */ 982 u32 palign; 983 /* number of "2KB" PIO buffers */ 984 u32 piobcnt2k; 985 /* size in bytes of "2KB" PIO buffers */ 986 u32 piosize2k; 987 /* max usable size in dwords of a "2KB" PIO buffer before going "4KB" */ 988 u32 piosize2kmax_dwords; 989 /* number of "4KB" PIO buffers */ 990 u32 piobcnt4k; 991 /* size in bytes of "4KB" PIO buffers */ 992 u32 piosize4k; 993 /* kr_rcvegrbase value */ 994 u32 rcvegrbase; 995 /* kr_rcvtidbase value */ 996 u32 rcvtidbase; 997 /* kr_rcvtidcnt value */ 998 u32 rcvtidcnt; 999 /* kr_userregbase */ 1000 u32 uregbase; 1001 /* shadow the control register contents */ 1002 u32 control; 1003 1004 /* chip address space used by 4k pio buffers */ 1005 u32 align4k; 1006 /* size of each rcvegrbuffer */ 1007 u16 rcvegrbufsize; 1008 /* log2 of above */ 1009 u16 rcvegrbufsize_shift; 1010 /* localbus width (1, 2,4,8,16,32) from config space */ 1011 u32 lbus_width; 1012 /* localbus speed in MHz */ 1013 u32 lbus_speed; 1014 int unit; /* unit # of this chip */ 1015 1016 /* start of CHIP_SPEC move to chipspec, but need code changes */ 1017 /* low and high portions of MSI capability/vector */ 1018 u32 msi_lo; 1019 /* saved after PCIe init for restore after reset */ 1020 u32 msi_hi; 1021 /* MSI data (vector) saved for restore */ 1022 u16 msi_data; 1023 /* so we can rewrite it after a chip reset */ 1024 u32 pcibar0; 1025 /* so we can rewrite it after a chip reset */ 1026 u32 pcibar1; 1027 u64 rhdrhead_intr_off; 1028 1029 /* 1030 * ASCII serial number, from flash, large enough for original 1031 * all digit strings, and longer QLogic serial number format 1032 */ 1033 u8 serial[16]; 1034 /* human readable board version */ 1035 u8 boardversion[96]; 1036 u8 lbus_info[32]; /* human readable localbus info */ 1037 /* chip major rev, from qib_revision */ 1038 u8 majrev; 1039 /* chip minor rev, from qib_revision */ 1040 u8 minrev; 1041 1042 /* Misc small ints */ 1043 /* Number of physical ports available */ 1044 u8 num_pports; 1045 /* Lowest context number which can be used by user processes */ 1046 u8 first_user_ctxt; 1047 u8 n_krcv_queues; 1048 u8 qpn_mask; 1049 u8 skip_kctxt_mask; 1050 1051 u16 rhf_offset; /* offset of RHF within receive header entry */ 1052 1053 /* 1054 * GPIO pins for twsi-connected devices, and device code for eeprom 1055 */ 1056 u8 gpio_sda_num; 1057 u8 gpio_scl_num; 1058 u8 twsi_eeprom_dev; 1059 u8 board_atten; 1060 1061 /* Support (including locks) for EEPROM logging of errors and time */ 1062 /* control access to actual counters, timer */ 1063 spinlock_t eep_st_lock; 1064 /* control high-level access to EEPROM */ 1065 struct mutex eep_lock; 1066 uint64_t traffic_wds; 1067 struct qib_diag_client *diag_client; 1068 spinlock_t qib_diag_trans_lock; /* protect diag observer ops */ 1069 struct diag_observer_list_elt *diag_observer_list; 1070 1071 u8 psxmitwait_supported; 1072 /* cycle length of PS* counters in HW (in picoseconds) */ 1073 u16 psxmitwait_check_rate; 1074 /* high volume overflow errors defered to tasklet */ 1075 struct tasklet_struct error_tasklet; 1076 1077 int assigned_node_id; /* NUMA node closest to HCA */ 1078 }; 1079 1080 /* hol_state values */ 1081 #define QIB_HOL_UP 0 1082 #define QIB_HOL_INIT 1 1083 1084 #define QIB_SDMA_SENDCTRL_OP_ENABLE (1U << 0) 1085 #define QIB_SDMA_SENDCTRL_OP_INTENABLE (1U << 1) 1086 #define QIB_SDMA_SENDCTRL_OP_HALT (1U << 2) 1087 #define QIB_SDMA_SENDCTRL_OP_CLEANUP (1U << 3) 1088 #define QIB_SDMA_SENDCTRL_OP_DRAIN (1U << 4) 1089 1090 /* operation types for f_txchk_change() */ 1091 #define TXCHK_CHG_TYPE_DIS1 3 1092 #define TXCHK_CHG_TYPE_ENAB1 2 1093 #define TXCHK_CHG_TYPE_KERN 1 1094 #define TXCHK_CHG_TYPE_USER 0 1095 1096 #define QIB_CHASE_TIME msecs_to_jiffies(145) 1097 #define QIB_CHASE_DIS_TIME msecs_to_jiffies(160) 1098 1099 /* Private data for file operations */ 1100 struct qib_filedata { 1101 struct qib_ctxtdata *rcd; 1102 unsigned subctxt; 1103 unsigned tidcursor; 1104 struct qib_user_sdma_queue *pq; 1105 int rec_cpu_num; /* for cpu affinity; -1 if none */ 1106 }; 1107 1108 extern struct list_head qib_dev_list; 1109 extern spinlock_t qib_devs_lock; 1110 extern struct qib_devdata *qib_lookup(int unit); 1111 extern u32 qib_cpulist_count; 1112 extern unsigned long *qib_cpulist; 1113 extern unsigned qib_cc_table_size; 1114 1115 int qib_init(struct qib_devdata *, int); 1116 int init_chip_wc_pat(struct qib_devdata *dd, u32); 1117 int qib_enable_wc(struct qib_devdata *dd); 1118 void qib_disable_wc(struct qib_devdata *dd); 1119 int qib_count_units(int *npresentp, int *nupp); 1120 int qib_count_active_units(void); 1121 1122 int qib_cdev_init(int minor, const char *name, 1123 const struct file_operations *fops, 1124 struct cdev **cdevp, struct device **devp); 1125 void qib_cdev_cleanup(struct cdev **cdevp, struct device **devp); 1126 int qib_dev_init(void); 1127 void qib_dev_cleanup(void); 1128 1129 int qib_diag_add(struct qib_devdata *); 1130 void qib_diag_remove(struct qib_devdata *); 1131 void qib_handle_e_ibstatuschanged(struct qib_pportdata *, u64); 1132 void qib_sdma_update_tail(struct qib_pportdata *, u16); /* hold sdma_lock */ 1133 1134 int qib_decode_err(struct qib_devdata *dd, char *buf, size_t blen, u64 err); 1135 void qib_bad_intrstatus(struct qib_devdata *); 1136 void qib_handle_urcv(struct qib_devdata *, u64); 1137 1138 /* clean up any per-chip chip-specific stuff */ 1139 void qib_chip_cleanup(struct qib_devdata *); 1140 /* clean up any chip type-specific stuff */ 1141 void qib_chip_done(void); 1142 1143 /* check to see if we have to force ordering for write combining */ 1144 int qib_unordered_wc(void); 1145 void qib_pio_copy(void __iomem *to, const void *from, size_t count); 1146 1147 void qib_disarm_piobufs(struct qib_devdata *, unsigned, unsigned); 1148 int qib_disarm_piobufs_ifneeded(struct qib_ctxtdata *); 1149 void qib_disarm_piobufs_set(struct qib_devdata *, unsigned long *, unsigned); 1150 void qib_cancel_sends(struct qib_pportdata *); 1151 1152 int qib_create_rcvhdrq(struct qib_devdata *, struct qib_ctxtdata *); 1153 int qib_setup_eagerbufs(struct qib_ctxtdata *); 1154 void qib_set_ctxtcnt(struct qib_devdata *); 1155 int qib_create_ctxts(struct qib_devdata *dd); 1156 struct qib_ctxtdata *qib_create_ctxtdata(struct qib_pportdata *, u32, int); 1157 int qib_init_pportdata(struct qib_pportdata *, struct qib_devdata *, u8, u8); 1158 void qib_free_ctxtdata(struct qib_devdata *, struct qib_ctxtdata *); 1159 1160 u32 qib_kreceive(struct qib_ctxtdata *, u32 *, u32 *); 1161 int qib_reset_device(int); 1162 int qib_wait_linkstate(struct qib_pportdata *, u32, int); 1163 int qib_set_linkstate(struct qib_pportdata *, u8); 1164 int qib_set_mtu(struct qib_pportdata *, u16); 1165 int qib_set_lid(struct qib_pportdata *, u32, u8); 1166 void qib_hol_down(struct qib_pportdata *); 1167 void qib_hol_init(struct qib_pportdata *); 1168 void qib_hol_up(struct qib_pportdata *); 1169 void qib_hol_event(struct timer_list *); 1170 void qib_disable_after_error(struct qib_devdata *); 1171 int qib_set_uevent_bits(struct qib_pportdata *, const int); 1172 1173 /* for use in system calls, where we want to know device type, etc. */ 1174 #define ctxt_fp(fp) \ 1175 (((struct qib_filedata *)(fp)->private_data)->rcd) 1176 #define subctxt_fp(fp) \ 1177 (((struct qib_filedata *)(fp)->private_data)->subctxt) 1178 #define tidcursor_fp(fp) \ 1179 (((struct qib_filedata *)(fp)->private_data)->tidcursor) 1180 #define user_sdma_queue_fp(fp) \ 1181 (((struct qib_filedata *)(fp)->private_data)->pq) 1182 dd_from_ppd(struct qib_pportdata * ppd)1183 static inline struct qib_devdata *dd_from_ppd(struct qib_pportdata *ppd) 1184 { 1185 return ppd->dd; 1186 } 1187 dd_from_dev(struct qib_ibdev * dev)1188 static inline struct qib_devdata *dd_from_dev(struct qib_ibdev *dev) 1189 { 1190 return container_of(dev, struct qib_devdata, verbs_dev); 1191 } 1192 dd_from_ibdev(struct ib_device * ibdev)1193 static inline struct qib_devdata *dd_from_ibdev(struct ib_device *ibdev) 1194 { 1195 return dd_from_dev(to_idev(ibdev)); 1196 } 1197 ppd_from_ibp(struct qib_ibport * ibp)1198 static inline struct qib_pportdata *ppd_from_ibp(struct qib_ibport *ibp) 1199 { 1200 return container_of(ibp, struct qib_pportdata, ibport_data); 1201 } 1202 to_iport(struct ib_device * ibdev,u8 port)1203 static inline struct qib_ibport *to_iport(struct ib_device *ibdev, u8 port) 1204 { 1205 struct qib_devdata *dd = dd_from_ibdev(ibdev); 1206 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ 1207 1208 WARN_ON(pidx >= dd->num_pports); 1209 return &dd->pport[pidx].ibport_data; 1210 } 1211 1212 /* 1213 * values for dd->flags (_device_ related flags) and 1214 */ 1215 #define QIB_HAS_LINK_LATENCY 0x1 /* supports link latency (IB 1.2) */ 1216 #define QIB_INITTED 0x2 /* chip and driver up and initted */ 1217 #define QIB_DOING_RESET 0x4 /* in the middle of doing chip reset */ 1218 #define QIB_PRESENT 0x8 /* chip accesses can be done */ 1219 #define QIB_PIO_FLUSH_WC 0x10 /* Needs Write combining flush for PIO */ 1220 #define QIB_HAS_THRESH_UPDATE 0x40 1221 #define QIB_HAS_SDMA_TIMEOUT 0x80 1222 #define QIB_USE_SPCL_TRIG 0x100 /* SpecialTrigger launch enabled */ 1223 #define QIB_NODMA_RTAIL 0x200 /* rcvhdrtail register DMA enabled */ 1224 #define QIB_HAS_INTX 0x800 /* Supports INTx interrupts */ 1225 #define QIB_HAS_SEND_DMA 0x1000 /* Supports Send DMA */ 1226 #define QIB_HAS_VLSUPP 0x2000 /* Supports multiple VLs; PBC different */ 1227 #define QIB_HAS_HDRSUPP 0x4000 /* Supports header suppression */ 1228 #define QIB_BADINTR 0x8000 /* severe interrupt problems */ 1229 #define QIB_DCA_ENABLED 0x10000 /* Direct Cache Access enabled */ 1230 #define QIB_HAS_QSFP 0x20000 /* device (card instance) has QSFP */ 1231 #define QIB_SHUTDOWN 0x40000 /* device is shutting down */ 1232 1233 /* 1234 * values for ppd->lflags (_ib_port_ related flags) 1235 */ 1236 #define QIBL_LINKV 0x1 /* IB link state valid */ 1237 #define QIBL_LINKDOWN 0x8 /* IB link is down */ 1238 #define QIBL_LINKINIT 0x10 /* IB link level is up */ 1239 #define QIBL_LINKARMED 0x20 /* IB link is ARMED */ 1240 #define QIBL_LINKACTIVE 0x40 /* IB link is ACTIVE */ 1241 /* leave a gap for more IB-link state */ 1242 #define QIBL_IB_AUTONEG_INPROG 0x1000 /* non-IBTA DDR/QDR neg active */ 1243 #define QIBL_IB_AUTONEG_FAILED 0x2000 /* non-IBTA DDR/QDR neg failed */ 1244 #define QIBL_IB_LINK_DISABLED 0x4000 /* Linkdown-disable forced, 1245 * Do not try to bring up */ 1246 #define QIBL_IB_FORCE_NOTIFY 0x8000 /* force notify on next ib change */ 1247 1248 /* IB dword length mask in PBC (lower 11 bits); same for all chips */ 1249 #define QIB_PBC_LENGTH_MASK ((1 << 11) - 1) 1250 1251 1252 /* ctxt_flag bit offsets */ 1253 /* waiting for a packet to arrive */ 1254 #define QIB_CTXT_WAITING_RCV 2 1255 /* master has not finished initializing */ 1256 #define QIB_CTXT_MASTER_UNINIT 4 1257 /* waiting for an urgent packet to arrive */ 1258 #define QIB_CTXT_WAITING_URG 5 1259 1260 /* free up any allocated data at closes */ 1261 void qib_free_data(struct qib_ctxtdata *dd); 1262 void qib_chg_pioavailkernel(struct qib_devdata *, unsigned, unsigned, 1263 u32, struct qib_ctxtdata *); 1264 struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *, 1265 const struct pci_device_id *); 1266 struct qib_devdata *qib_init_iba7220_funcs(struct pci_dev *, 1267 const struct pci_device_id *); 1268 struct qib_devdata *qib_init_iba6120_funcs(struct pci_dev *, 1269 const struct pci_device_id *); 1270 void qib_free_devdata(struct qib_devdata *); 1271 struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra); 1272 1273 #define QIB_TWSI_NO_DEV 0xFF 1274 /* Below qib_twsi_ functions must be called with eep_lock held */ 1275 int qib_twsi_reset(struct qib_devdata *dd); 1276 int qib_twsi_blk_rd(struct qib_devdata *dd, int dev, int addr, void *buffer, 1277 int len); 1278 int qib_twsi_blk_wr(struct qib_devdata *dd, int dev, int addr, 1279 const void *buffer, int len); 1280 void qib_get_eeprom_info(struct qib_devdata *); 1281 void qib_dump_lookup_output_queue(struct qib_devdata *); 1282 void qib_force_pio_avail_update(struct qib_devdata *); 1283 void qib_clear_symerror_on_linkup(struct timer_list *t); 1284 1285 /* 1286 * Set LED override, only the two LSBs have "public" meaning, but 1287 * any non-zero value substitutes them for the Link and LinkTrain 1288 * LED states. 1289 */ 1290 #define QIB_LED_PHYS 1 /* Physical (linktraining) GREEN LED */ 1291 #define QIB_LED_LOG 2 /* Logical (link) YELLOW LED */ 1292 void qib_set_led_override(struct qib_pportdata *ppd, unsigned int val); 1293 1294 /* send dma routines */ 1295 int qib_setup_sdma(struct qib_pportdata *); 1296 void qib_teardown_sdma(struct qib_pportdata *); 1297 void __qib_sdma_intr(struct qib_pportdata *); 1298 void qib_sdma_intr(struct qib_pportdata *); 1299 void qib_user_sdma_send_desc(struct qib_pportdata *dd, 1300 struct list_head *pktlist); 1301 int qib_sdma_verbs_send(struct qib_pportdata *, struct rvt_sge_state *, 1302 u32, struct qib_verbs_txreq *); 1303 /* ppd->sdma_lock should be locked before calling this. */ 1304 int qib_sdma_make_progress(struct qib_pportdata *dd); 1305 qib_sdma_empty(const struct qib_pportdata * ppd)1306 static inline int qib_sdma_empty(const struct qib_pportdata *ppd) 1307 { 1308 return ppd->sdma_descq_added == ppd->sdma_descq_removed; 1309 } 1310 1311 /* must be called under qib_sdma_lock */ qib_sdma_descq_freecnt(const struct qib_pportdata * ppd)1312 static inline u16 qib_sdma_descq_freecnt(const struct qib_pportdata *ppd) 1313 { 1314 return ppd->sdma_descq_cnt - 1315 (ppd->sdma_descq_added - ppd->sdma_descq_removed) - 1; 1316 } 1317 __qib_sdma_running(struct qib_pportdata * ppd)1318 static inline int __qib_sdma_running(struct qib_pportdata *ppd) 1319 { 1320 return ppd->sdma_state.current_state == qib_sdma_state_s99_running; 1321 } 1322 int qib_sdma_running(struct qib_pportdata *); 1323 void dump_sdma_state(struct qib_pportdata *ppd); 1324 void __qib_sdma_process_event(struct qib_pportdata *, enum qib_sdma_events); 1325 void qib_sdma_process_event(struct qib_pportdata *, enum qib_sdma_events); 1326 1327 /* 1328 * number of words used for protocol header if not set by qib_userinit(); 1329 */ 1330 #define QIB_DFLT_RCVHDRSIZE 9 1331 1332 /* 1333 * We need to be able to handle an IB header of at least 24 dwords. 1334 * We need the rcvhdrq large enough to handle largest IB header, but 1335 * still have room for a 2KB MTU standard IB packet. 1336 * Additionally, some processor/memory controller combinations 1337 * benefit quite strongly from having the DMA'ed data be cacheline 1338 * aligned and a cacheline multiple, so we set the size to 32 dwords 1339 * (2 64-byte primary cachelines for pretty much all processors of 1340 * interest). The alignment hurts nothing, other than using somewhat 1341 * more memory. 1342 */ 1343 #define QIB_RCVHDR_ENTSIZE 32 1344 1345 int qib_get_user_pages(unsigned long, size_t, struct page **); 1346 void qib_release_user_pages(struct page **, size_t); 1347 int qib_eeprom_read(struct qib_devdata *, u8, void *, int); 1348 int qib_eeprom_write(struct qib_devdata *, u8, const void *, int); 1349 u32 __iomem *qib_getsendbuf_range(struct qib_devdata *, u32 *, u32, u32); 1350 void qib_sendbuf_done(struct qib_devdata *, unsigned); 1351 qib_clear_rcvhdrtail(const struct qib_ctxtdata * rcd)1352 static inline void qib_clear_rcvhdrtail(const struct qib_ctxtdata *rcd) 1353 { 1354 *((u64 *) rcd->rcvhdrtail_kvaddr) = 0ULL; 1355 } 1356 qib_get_rcvhdrtail(const struct qib_ctxtdata * rcd)1357 static inline u32 qib_get_rcvhdrtail(const struct qib_ctxtdata *rcd) 1358 { 1359 /* 1360 * volatile because it's a DMA target from the chip, routine is 1361 * inlined, and don't want register caching or reordering. 1362 */ 1363 return (u32) le64_to_cpu( 1364 *((volatile __le64 *)rcd->rcvhdrtail_kvaddr)); /* DMA'ed */ 1365 } 1366 qib_get_hdrqtail(const struct qib_ctxtdata * rcd)1367 static inline u32 qib_get_hdrqtail(const struct qib_ctxtdata *rcd) 1368 { 1369 const struct qib_devdata *dd = rcd->dd; 1370 u32 hdrqtail; 1371 1372 if (dd->flags & QIB_NODMA_RTAIL) { 1373 __le32 *rhf_addr; 1374 u32 seq; 1375 1376 rhf_addr = (__le32 *) rcd->rcvhdrq + 1377 rcd->head + dd->rhf_offset; 1378 seq = qib_hdrget_seq(rhf_addr); 1379 hdrqtail = rcd->head; 1380 if (seq == rcd->seq_cnt) 1381 hdrqtail++; 1382 } else 1383 hdrqtail = qib_get_rcvhdrtail(rcd); 1384 1385 return hdrqtail; 1386 } 1387 1388 /* 1389 * sysfs interface. 1390 */ 1391 1392 extern const char ib_qib_version[]; 1393 1394 int qib_device_create(struct qib_devdata *); 1395 void qib_device_remove(struct qib_devdata *); 1396 1397 int qib_create_port_files(struct ib_device *ibdev, u8 port_num, 1398 struct kobject *kobj); 1399 int qib_verbs_register_sysfs(struct qib_devdata *); 1400 void qib_verbs_unregister_sysfs(struct qib_devdata *); 1401 /* Hook for sysfs read of QSFP */ 1402 extern int qib_qsfp_dump(struct qib_pportdata *ppd, char *buf, int len); 1403 1404 int __init qib_init_qibfs(void); 1405 int __exit qib_exit_qibfs(void); 1406 1407 int qibfs_add(struct qib_devdata *); 1408 int qibfs_remove(struct qib_devdata *); 1409 1410 int qib_pcie_init(struct pci_dev *, const struct pci_device_id *); 1411 int qib_pcie_ddinit(struct qib_devdata *, struct pci_dev *, 1412 const struct pci_device_id *); 1413 void qib_pcie_ddcleanup(struct qib_devdata *); 1414 int qib_pcie_params(struct qib_devdata *dd, u32 minw, u32 *nent); 1415 void qib_free_irq(struct qib_devdata *dd); 1416 int qib_reinit_intr(struct qib_devdata *dd); 1417 void qib_pcie_getcmd(struct qib_devdata *, u16 *, u8 *, u8 *); 1418 void qib_pcie_reenable(struct qib_devdata *, u16, u8, u8); 1419 /* interrupts for device */ 1420 u64 qib_int_counter(struct qib_devdata *); 1421 /* interrupt for all devices */ 1422 u64 qib_sps_ints(void); 1423 1424 /* 1425 * dma_addr wrappers - all 0's invalid for hw 1426 */ 1427 int qib_map_page(struct pci_dev *d, struct page *p, dma_addr_t *daddr); 1428 struct pci_dev *qib_get_pci_dev(struct rvt_dev_info *rdi); 1429 1430 /* 1431 * Flush write combining store buffers (if present) and perform a write 1432 * barrier. 1433 */ qib_flush_wc(void)1434 static inline void qib_flush_wc(void) 1435 { 1436 #if defined(CONFIG_X86_64) 1437 asm volatile("sfence" : : : "memory"); 1438 #else 1439 wmb(); /* no reorder around wc flush */ 1440 #endif 1441 } 1442 1443 /* global module parameter variables */ 1444 extern unsigned qib_ibmtu; 1445 extern ushort qib_cfgctxts; 1446 extern ushort qib_num_cfg_vls; 1447 extern ushort qib_mini_init; /* If set, do few (ideally 0) writes to chip */ 1448 extern unsigned qib_n_krcv_queues; 1449 extern unsigned qib_sdma_fetch_arb; 1450 extern unsigned qib_compat_ddr_negotiate; 1451 extern int qib_special_trigger; 1452 extern unsigned qib_numa_aware; 1453 1454 extern struct mutex qib_mutex; 1455 1456 /* Number of seconds before our card status check... */ 1457 #define STATUS_TIMEOUT 60 1458 1459 #define QIB_DRV_NAME "ib_qib" 1460 #define QIB_USER_MINOR_BASE 0 1461 #define QIB_TRACE_MINOR 127 1462 #define QIB_DIAGPKT_MINOR 128 1463 #define QIB_DIAG_MINOR_BASE 129 1464 #define QIB_NMINORS 255 1465 1466 #define PCI_VENDOR_ID_PATHSCALE 0x1fc1 1467 #define PCI_VENDOR_ID_QLOGIC 0x1077 1468 #define PCI_DEVICE_ID_QLOGIC_IB_6120 0x10 1469 #define PCI_DEVICE_ID_QLOGIC_IB_7220 0x7220 1470 #define PCI_DEVICE_ID_QLOGIC_IB_7322 0x7322 1471 1472 /* 1473 * qib_early_err is used (only!) to print early errors before devdata is 1474 * allocated, or when dd->pcidev may not be valid, and at the tail end of 1475 * cleanup when devdata may have been freed, etc. qib_dev_porterr is 1476 * the same as qib_dev_err, but is used when the message really needs 1477 * the IB port# to be definitive as to what's happening.. 1478 * All of these go to the trace log, and the trace log entry is done 1479 * first to avoid possible serial port delays from printk. 1480 */ 1481 #define qib_early_err(dev, fmt, ...) \ 1482 dev_err(dev, fmt, ##__VA_ARGS__) 1483 1484 #define qib_dev_err(dd, fmt, ...) \ 1485 dev_err(&(dd)->pcidev->dev, "%s: " fmt, \ 1486 rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__) 1487 1488 #define qib_dev_warn(dd, fmt, ...) \ 1489 dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \ 1490 rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), ##__VA_ARGS__) 1491 1492 #define qib_dev_porterr(dd, port, fmt, ...) \ 1493 dev_err(&(dd)->pcidev->dev, "%s: IB%u:%u " fmt, \ 1494 rvt_get_ibdev_name(&(dd)->verbs_dev.rdi), (dd)->unit, (port), \ 1495 ##__VA_ARGS__) 1496 1497 #define qib_devinfo(pcidev, fmt, ...) \ 1498 dev_info(&(pcidev)->dev, fmt, ##__VA_ARGS__) 1499 1500 /* 1501 * this is used for formatting hw error messages... 1502 */ 1503 struct qib_hwerror_msgs { 1504 u64 mask; 1505 const char *msg; 1506 size_t sz; 1507 }; 1508 1509 #define QLOGIC_IB_HWE_MSG(a, b) { .mask = a, .msg = b } 1510 1511 /* in qib_intr.c... */ 1512 void qib_format_hwerrors(u64 hwerrs, 1513 const struct qib_hwerror_msgs *hwerrmsgs, 1514 size_t nhwerrmsgs, char *msg, size_t lmsg); 1515 1516 void qib_stop_send_queue(struct rvt_qp *qp); 1517 void qib_quiesce_qp(struct rvt_qp *qp); 1518 void qib_flush_qp_waiters(struct rvt_qp *qp); 1519 int qib_mtu_to_path_mtu(u32 mtu); 1520 u32 qib_mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu); 1521 void qib_notify_error_qp(struct rvt_qp *qp); 1522 int qib_get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp, 1523 struct ib_qp_attr *attr); 1524 1525 #endif /* _QIB_KERNEL_H */ 1526
