1 #ifndef _HFI1_KERNEL_H 2 #define _HFI1_KERNEL_H 3 /* 4 * Copyright(c) 2015, 2016 Intel Corporation. 5 * 6 * This file is provided under a dual BSD/GPLv2 license. When using or 7 * redistributing this file, you may do so under either license. 8 * 9 * GPL LICENSE SUMMARY 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * BSD LICENSE 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 26 * - Redistributions of source code must retain the above copyright 27 * notice, this list of conditions and the following disclaimer. 28 * - Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in 30 * the documentation and/or other materials provided with the 31 * distribution. 32 * - Neither the name of Intel Corporation nor the names of its 33 * contributors may be used to endorse or promote products derived 34 * from this software without specific prior written permission. 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 37 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 38 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 39 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 40 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 43 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 44 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 45 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 46 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 47 * 48 */ 49 50 #include <linux/interrupt.h> 51 #include <linux/pci.h> 52 #include <linux/dma-mapping.h> 53 #include <linux/mutex.h> 54 #include <linux/list.h> 55 #include <linux/scatterlist.h> 56 #include <linux/slab.h> 57 #include <linux/io.h> 58 #include <linux/fs.h> 59 #include <linux/completion.h> 60 #include <linux/kref.h> 61 #include <linux/sched.h> 62 #include <linux/cdev.h> 63 #include <linux/delay.h> 64 #include <linux/kthread.h> 65 #include <linux/i2c.h> 66 #include <linux/i2c-algo-bit.h> 67 #include <rdma/ib_hdrs.h> 68 #include <linux/rhashtable.h> 69 #include <rdma/rdma_vt.h> 70 71 #include "chip_registers.h" 72 #include "common.h" 73 #include "verbs.h" 74 #include "pio.h" 75 #include "chip.h" 76 #include "mad.h" 77 #include "qsfp.h" 78 #include "platform.h" 79 #include "affinity.h" 80 81 /* bumped 1 from s/w major version of TrueScale */ 82 #define HFI1_CHIP_VERS_MAJ 3U 83 84 /* don't care about this except printing */ 85 #define HFI1_CHIP_VERS_MIN 0U 86 87 /* The Organization Unique Identifier (Mfg code), and its position in GUID */ 88 #define HFI1_OUI 0x001175 89 #define HFI1_OUI_LSB 40 90 91 #define DROP_PACKET_OFF 0 92 #define DROP_PACKET_ON 1 93 94 extern unsigned long hfi1_cap_mask; 95 #define HFI1_CAP_KGET_MASK(mask, cap) ((mask) & HFI1_CAP_##cap) 96 #define HFI1_CAP_UGET_MASK(mask, cap) \ 97 (((mask) >> HFI1_CAP_USER_SHIFT) & HFI1_CAP_##cap) 98 #define HFI1_CAP_KGET(cap) (HFI1_CAP_KGET_MASK(hfi1_cap_mask, cap)) 99 #define HFI1_CAP_UGET(cap) (HFI1_CAP_UGET_MASK(hfi1_cap_mask, cap)) 100 #define HFI1_CAP_IS_KSET(cap) (!!HFI1_CAP_KGET(cap)) 101 #define HFI1_CAP_IS_USET(cap) (!!HFI1_CAP_UGET(cap)) 102 #define HFI1_MISC_GET() ((hfi1_cap_mask >> HFI1_CAP_MISC_SHIFT) & \ 103 HFI1_CAP_MISC_MASK) 104 /* Offline Disabled Reason is 4-bits */ 105 #define HFI1_ODR_MASK(rsn) ((rsn) & OPA_PI_MASK_OFFLINE_REASON) 106 107 /* 108 * Control context is always 0 and handles the error packets. 109 * It also handles the VL15 and multicast packets. 110 */ 111 #define HFI1_CTRL_CTXT 0 112 113 /* 114 * Driver context will store software counters for each of the events 115 * associated with these status registers 116 */ 117 #define NUM_CCE_ERR_STATUS_COUNTERS 41 118 #define NUM_RCV_ERR_STATUS_COUNTERS 64 119 #define NUM_MISC_ERR_STATUS_COUNTERS 13 120 #define NUM_SEND_PIO_ERR_STATUS_COUNTERS 36 121 #define NUM_SEND_DMA_ERR_STATUS_COUNTERS 4 122 #define NUM_SEND_EGRESS_ERR_STATUS_COUNTERS 64 123 #define NUM_SEND_ERR_STATUS_COUNTERS 3 124 #define NUM_SEND_CTXT_ERR_STATUS_COUNTERS 5 125 #define NUM_SEND_DMA_ENG_ERR_STATUS_COUNTERS 24 126 127 /* 128 * per driver stats, either not device nor port-specific, or 129 * summed over all of the devices and ports. 130 * They are described by name via ipathfs filesystem, so layout 131 * and number of elements can change without breaking compatibility. 132 * If members are added or deleted hfi1_statnames[] in debugfs.c must 133 * change to match. 134 */ 135 struct hfi1_ib_stats { 136 __u64 sps_ints; /* number of interrupts handled */ 137 __u64 sps_errints; /* number of error interrupts */ 138 __u64 sps_txerrs; /* tx-related packet errors */ 139 __u64 sps_rcverrs; /* non-crc rcv packet errors */ 140 __u64 sps_hwerrs; /* hardware errors reported (parity, etc.) */ 141 __u64 sps_nopiobufs; /* no pio bufs avail from kernel */ 142 __u64 sps_ctxts; /* number of contexts currently open */ 143 __u64 sps_lenerrs; /* number of kernel packets where RHF != LRH len */ 144 __u64 sps_buffull; 145 __u64 sps_hdrfull; 146 }; 147 148 extern struct hfi1_ib_stats hfi1_stats; 149 extern const struct pci_error_handlers hfi1_pci_err_handler; 150 151 /* 152 * First-cut criterion for "device is active" is 153 * two thousand dwords combined Tx, Rx traffic per 154 * 5-second interval. SMA packets are 64 dwords, 155 * and occur "a few per second", presumably each way. 156 */ 157 #define HFI1_TRAFFIC_ACTIVE_THRESHOLD (2000) 158 159 /* 160 * Below contains all data related to a single context (formerly called port). 161 */ 162 163 #ifdef CONFIG_DEBUG_FS 164 struct hfi1_opcode_stats_perctx; 165 #endif 166 167 struct ctxt_eager_bufs { 168 ssize_t size; /* total size of eager buffers */ 169 u32 count; /* size of buffers array */ 170 u32 numbufs; /* number of buffers allocated */ 171 u32 alloced; /* number of rcvarray entries used */ 172 u32 rcvtid_size; /* size of each eager rcv tid */ 173 u32 threshold; /* head update threshold */ 174 struct eager_buffer { 175 void *addr; 176 dma_addr_t dma; 177 ssize_t len; 178 } *buffers; 179 struct { 180 void *addr; 181 dma_addr_t dma; 182 } *rcvtids; 183 }; 184 185 struct exp_tid_set { 186 struct list_head list; 187 u32 count; 188 }; 189 190 struct hfi1_ctxtdata { 191 /* shadow the ctxt's RcvCtrl register */ 192 u64 rcvctrl; 193 /* rcvhdrq base, needs mmap before useful */ 194 void *rcvhdrq; 195 /* kernel virtual address where hdrqtail is updated */ 196 volatile __le64 *rcvhdrtail_kvaddr; 197 /* 198 * Shared page for kernel to signal user processes that send buffers 199 * need disarming. The process should call HFI1_CMD_DISARM_BUFS 200 * or HFI1_CMD_ACK_EVENT with IPATH_EVENT_DISARM_BUFS set. 201 */ 202 unsigned long *user_event_mask; 203 /* when waiting for rcv or pioavail */ 204 wait_queue_head_t wait; 205 /* rcvhdrq size (for freeing) */ 206 size_t rcvhdrq_size; 207 /* number of rcvhdrq entries */ 208 u16 rcvhdrq_cnt; 209 /* size of each of the rcvhdrq entries */ 210 u16 rcvhdrqentsize; 211 /* mmap of hdrq, must fit in 44 bits */ 212 dma_addr_t rcvhdrq_dma; 213 dma_addr_t rcvhdrqtailaddr_dma; 214 struct ctxt_eager_bufs egrbufs; 215 /* this receive context's assigned PIO ACK send context */ 216 struct send_context *sc; 217 218 /* dynamic receive available interrupt timeout */ 219 u32 rcvavail_timeout; 220 /* 221 * number of opens (including slave sub-contexts) on this instance 222 * (ignoring forks, dup, etc. for now) 223 */ 224 int cnt; 225 /* 226 * how much space to leave at start of eager TID entries for 227 * protocol use, on each TID 228 */ 229 /* instead of calculating it */ 230 unsigned ctxt; 231 /* non-zero if ctxt is being shared. */ 232 u16 subctxt_cnt; 233 /* non-zero if ctxt is being shared. */ 234 u16 subctxt_id; 235 u8 uuid[16]; 236 /* job key */ 237 u16 jkey; 238 /* number of RcvArray groups for this context. */ 239 u32 rcv_array_groups; 240 /* index of first eager TID entry. */ 241 u32 eager_base; 242 /* number of expected TID entries */ 243 u32 expected_count; 244 /* index of first expected TID entry. */ 245 u32 expected_base; 246 247 struct exp_tid_set tid_group_list; 248 struct exp_tid_set tid_used_list; 249 struct exp_tid_set tid_full_list; 250 251 /* lock protecting all Expected TID data */ 252 struct mutex exp_lock; 253 /* number of pio bufs for this ctxt (all procs, if shared) */ 254 u32 piocnt; 255 /* first pio buffer for this ctxt */ 256 u32 pio_base; 257 /* chip offset of PIO buffers for this ctxt */ 258 u32 piobufs; 259 /* per-context configuration flags */ 260 unsigned long flags; 261 /* per-context event flags for fileops/intr communication */ 262 unsigned long event_flags; 263 /* WAIT_RCV that timed out, no interrupt */ 264 u32 rcvwait_to; 265 /* WAIT_PIO that timed out, no interrupt */ 266 u32 piowait_to; 267 /* WAIT_RCV already happened, no wait */ 268 u32 rcvnowait; 269 /* WAIT_PIO already happened, no wait */ 270 u32 pionowait; 271 /* total number of polled urgent packets */ 272 u32 urgent; 273 /* saved total number of polled urgent packets for poll edge trigger */ 274 u32 urgent_poll; 275 /* same size as task_struct .comm[], command that opened context */ 276 char comm[TASK_COMM_LEN]; 277 /* so file ops can get at unit */ 278 struct hfi1_devdata *dd; 279 /* so functions that need physical port can get it easily */ 280 struct hfi1_pportdata *ppd; 281 /* A page of memory for rcvhdrhead, rcvegrhead, rcvegrtail * N */ 282 void *subctxt_uregbase; 283 /* An array of pages for the eager receive buffers * N */ 284 void *subctxt_rcvegrbuf; 285 /* An array of pages for the eager header queue entries * N */ 286 void *subctxt_rcvhdr_base; 287 /* The version of the library which opened this ctxt */ 288 u32 userversion; 289 /* Bitmask of active slaves */ 290 u32 active_slaves; 291 /* Type of packets or conditions we want to poll for */ 292 u16 poll_type; 293 /* receive packet sequence counter */ 294 u8 seq_cnt; 295 u8 redirect_seq_cnt; 296 /* ctxt rcvhdrq head offset */ 297 u32 head; 298 u32 pkt_count; 299 /* QPs waiting for context processing */ 300 struct list_head qp_wait_list; 301 /* interrupt handling */ 302 u64 imask; /* clear interrupt mask */ 303 int ireg; /* clear interrupt register */ 304 unsigned numa_id; /* numa node of this context */ 305 /* verbs stats per CTX */ 306 struct hfi1_opcode_stats_perctx *opstats; 307 /* 308 * This is the kernel thread that will keep making 309 * progress on the user sdma requests behind the scenes. 310 * There is one per context (shared contexts use the master's). 311 */ 312 struct task_struct *progress; 313 struct list_head sdma_queues; 314 /* protect sdma queues */ 315 spinlock_t sdma_qlock; 316 317 /* Is ASPM interrupt supported for this context */ 318 bool aspm_intr_supported; 319 /* ASPM state (enabled/disabled) for this context */ 320 bool aspm_enabled; 321 /* Timer for re-enabling ASPM if interrupt activity quietens down */ 322 struct timer_list aspm_timer; 323 /* Lock to serialize between intr, timer intr and user threads */ 324 spinlock_t aspm_lock; 325 /* Is ASPM processing enabled for this context (in intr context) */ 326 bool aspm_intr_enable; 327 /* Last interrupt timestamp */ 328 ktime_t aspm_ts_last_intr; 329 /* Last timestamp at which we scheduled a timer for this context */ 330 ktime_t aspm_ts_timer_sched; 331 332 /* 333 * The interrupt handler for a particular receive context can vary 334 * throughout it's lifetime. This is not a lock protected data member so 335 * it must be updated atomically and the prev and new value must always 336 * be valid. Worst case is we process an extra interrupt and up to 64 337 * packets with the wrong interrupt handler. 338 */ 339 int (*do_interrupt)(struct hfi1_ctxtdata *rcd, int threaded); 340 }; 341 342 /* 343 * Represents a single packet at a high level. Put commonly computed things in 344 * here so we do not have to keep doing them over and over. The rule of thumb is 345 * if something is used one time to derive some value, store that something in 346 * here. If it is used multiple times, then store the result of that derivation 347 * in here. 348 */ 349 struct hfi1_packet { 350 void *ebuf; 351 void *hdr; 352 struct hfi1_ctxtdata *rcd; 353 __le32 *rhf_addr; 354 struct rvt_qp *qp; 355 struct ib_other_headers *ohdr; 356 u64 rhf; 357 u32 maxcnt; 358 u32 rhqoff; 359 u32 hdrqtail; 360 int numpkt; 361 u16 tlen; 362 u16 hlen; 363 s16 etail; 364 u16 rsize; 365 u8 updegr; 366 u8 rcv_flags; 367 u8 etype; 368 }; 369 370 struct rvt_sge_state; 371 372 /* 373 * Get/Set IB link-level config parameters for f_get/set_ib_cfg() 374 * Mostly for MADs that set or query link parameters, also ipath 375 * config interfaces 376 */ 377 #define HFI1_IB_CFG_LIDLMC 0 /* LID (LS16b) and Mask (MS16b) */ 378 #define HFI1_IB_CFG_LWID_DG_ENB 1 /* allowed Link-width downgrade */ 379 #define HFI1_IB_CFG_LWID_ENB 2 /* allowed Link-width */ 380 #define HFI1_IB_CFG_LWID 3 /* currently active Link-width */ 381 #define HFI1_IB_CFG_SPD_ENB 4 /* allowed Link speeds */ 382 #define HFI1_IB_CFG_SPD 5 /* current Link spd */ 383 #define HFI1_IB_CFG_RXPOL_ENB 6 /* Auto-RX-polarity enable */ 384 #define HFI1_IB_CFG_LREV_ENB 7 /* Auto-Lane-reversal enable */ 385 #define HFI1_IB_CFG_LINKLATENCY 8 /* Link Latency (IB1.2 only) */ 386 #define HFI1_IB_CFG_HRTBT 9 /* IB heartbeat off/enable/auto; DDR/QDR only */ 387 #define HFI1_IB_CFG_OP_VLS 10 /* operational VLs */ 388 #define HFI1_IB_CFG_VL_HIGH_CAP 11 /* num of VL high priority weights */ 389 #define HFI1_IB_CFG_VL_LOW_CAP 12 /* num of VL low priority weights */ 390 #define HFI1_IB_CFG_OVERRUN_THRESH 13 /* IB overrun threshold */ 391 #define HFI1_IB_CFG_PHYERR_THRESH 14 /* IB PHY error threshold */ 392 #define HFI1_IB_CFG_LINKDEFAULT 15 /* IB link default (sleep/poll) */ 393 #define HFI1_IB_CFG_PKEYS 16 /* update partition keys */ 394 #define HFI1_IB_CFG_MTU 17 /* update MTU in IBC */ 395 #define HFI1_IB_CFG_VL_HIGH_LIMIT 19 396 #define HFI1_IB_CFG_PMA_TICKS 20 /* PMA sample tick resolution */ 397 #define HFI1_IB_CFG_PORT 21 /* switch port we are connected to */ 398 399 /* 400 * HFI or Host Link States 401 * 402 * These describe the states the driver thinks the logical and physical 403 * states are in. Used as an argument to set_link_state(). Implemented 404 * as bits for easy multi-state checking. The actual state can only be 405 * one. 406 */ 407 #define __HLS_UP_INIT_BP 0 408 #define __HLS_UP_ARMED_BP 1 409 #define __HLS_UP_ACTIVE_BP 2 410 #define __HLS_DN_DOWNDEF_BP 3 /* link down default */ 411 #define __HLS_DN_POLL_BP 4 412 #define __HLS_DN_DISABLE_BP 5 413 #define __HLS_DN_OFFLINE_BP 6 414 #define __HLS_VERIFY_CAP_BP 7 415 #define __HLS_GOING_UP_BP 8 416 #define __HLS_GOING_OFFLINE_BP 9 417 #define __HLS_LINK_COOLDOWN_BP 10 418 419 #define HLS_UP_INIT BIT(__HLS_UP_INIT_BP) 420 #define HLS_UP_ARMED BIT(__HLS_UP_ARMED_BP) 421 #define HLS_UP_ACTIVE BIT(__HLS_UP_ACTIVE_BP) 422 #define HLS_DN_DOWNDEF BIT(__HLS_DN_DOWNDEF_BP) /* link down default */ 423 #define HLS_DN_POLL BIT(__HLS_DN_POLL_BP) 424 #define HLS_DN_DISABLE BIT(__HLS_DN_DISABLE_BP) 425 #define HLS_DN_OFFLINE BIT(__HLS_DN_OFFLINE_BP) 426 #define HLS_VERIFY_CAP BIT(__HLS_VERIFY_CAP_BP) 427 #define HLS_GOING_UP BIT(__HLS_GOING_UP_BP) 428 #define HLS_GOING_OFFLINE BIT(__HLS_GOING_OFFLINE_BP) 429 #define HLS_LINK_COOLDOWN BIT(__HLS_LINK_COOLDOWN_BP) 430 431 #define HLS_UP (HLS_UP_INIT | HLS_UP_ARMED | HLS_UP_ACTIVE) 432 #define HLS_DOWN ~(HLS_UP) 433 434 /* use this MTU size if none other is given */ 435 #define HFI1_DEFAULT_ACTIVE_MTU 10240 436 /* use this MTU size as the default maximum */ 437 #define HFI1_DEFAULT_MAX_MTU 10240 438 /* default partition key */ 439 #define DEFAULT_PKEY 0xffff 440 441 /* 442 * Possible fabric manager config parameters for fm_{get,set}_table() 443 */ 444 #define FM_TBL_VL_HIGH_ARB 1 /* Get/set VL high prio weights */ 445 #define FM_TBL_VL_LOW_ARB 2 /* Get/set VL low prio weights */ 446 #define FM_TBL_BUFFER_CONTROL 3 /* Get/set Buffer Control */ 447 #define FM_TBL_SC2VLNT 4 /* Get/set SC->VLnt */ 448 #define FM_TBL_VL_PREEMPT_ELEMS 5 /* Get (no set) VL preempt elems */ 449 #define FM_TBL_VL_PREEMPT_MATRIX 6 /* Get (no set) VL preempt matrix */ 450 451 /* 452 * Possible "operations" for f_rcvctrl(ppd, op, ctxt) 453 * these are bits so they can be combined, e.g. 454 * HFI1_RCVCTRL_INTRAVAIL_ENB | HFI1_RCVCTRL_CTXT_ENB 455 */ 456 #define HFI1_RCVCTRL_TAILUPD_ENB 0x01 457 #define HFI1_RCVCTRL_TAILUPD_DIS 0x02 458 #define HFI1_RCVCTRL_CTXT_ENB 0x04 459 #define HFI1_RCVCTRL_CTXT_DIS 0x08 460 #define HFI1_RCVCTRL_INTRAVAIL_ENB 0x10 461 #define HFI1_RCVCTRL_INTRAVAIL_DIS 0x20 462 #define HFI1_RCVCTRL_PKEY_ENB 0x40 /* Note, default is enabled */ 463 #define HFI1_RCVCTRL_PKEY_DIS 0x80 464 #define HFI1_RCVCTRL_TIDFLOW_ENB 0x0400 465 #define HFI1_RCVCTRL_TIDFLOW_DIS 0x0800 466 #define HFI1_RCVCTRL_ONE_PKT_EGR_ENB 0x1000 467 #define HFI1_RCVCTRL_ONE_PKT_EGR_DIS 0x2000 468 #define HFI1_RCVCTRL_NO_RHQ_DROP_ENB 0x4000 469 #define HFI1_RCVCTRL_NO_RHQ_DROP_DIS 0x8000 470 #define HFI1_RCVCTRL_NO_EGR_DROP_ENB 0x10000 471 #define HFI1_RCVCTRL_NO_EGR_DROP_DIS 0x20000 472 473 /* partition enforcement flags */ 474 #define HFI1_PART_ENFORCE_IN 0x1 475 #define HFI1_PART_ENFORCE_OUT 0x2 476 477 /* how often we check for synthetic counter wrap around */ 478 #define SYNTH_CNT_TIME 2 479 480 /* Counter flags */ 481 #define CNTR_NORMAL 0x0 /* Normal counters, just read register */ 482 #define CNTR_SYNTH 0x1 /* Synthetic counters, saturate at all 1s */ 483 #define CNTR_DISABLED 0x2 /* Disable this counter */ 484 #define CNTR_32BIT 0x4 /* Simulate 64 bits for this counter */ 485 #define CNTR_VL 0x8 /* Per VL counter */ 486 #define CNTR_SDMA 0x10 487 #define CNTR_INVALID_VL -1 /* Specifies invalid VL */ 488 #define CNTR_MODE_W 0x0 489 #define CNTR_MODE_R 0x1 490 491 /* VLs Supported/Operational */ 492 #define HFI1_MIN_VLS_SUPPORTED 1 493 #define HFI1_MAX_VLS_SUPPORTED 8 494 495 static inline void incr_cntr64(u64 *cntr) 496 { 497 if (*cntr < (u64)-1LL) 498 (*cntr)++; 499 } 500 501 static inline void incr_cntr32(u32 *cntr) 502 { 503 if (*cntr < (u32)-1LL) 504 (*cntr)++; 505 } 506 507 #define MAX_NAME_SIZE 64 508 struct hfi1_msix_entry { 509 enum irq_type type; 510 struct msix_entry msix; 511 void *arg; 512 char name[MAX_NAME_SIZE]; 513 cpumask_t mask; 514 struct irq_affinity_notify notify; 515 }; 516 517 /* per-SL CCA information */ 518 struct cca_timer { 519 struct hrtimer hrtimer; 520 struct hfi1_pportdata *ppd; /* read-only */ 521 int sl; /* read-only */ 522 u16 ccti; /* read/write - current value of CCTI */ 523 }; 524 525 struct link_down_reason { 526 /* 527 * SMA-facing value. Should be set from .latest when 528 * HLS_UP_* -> HLS_DN_* transition actually occurs. 529 */ 530 u8 sma; 531 u8 latest; 532 }; 533 534 enum { 535 LO_PRIO_TABLE, 536 HI_PRIO_TABLE, 537 MAX_PRIO_TABLE 538 }; 539 540 struct vl_arb_cache { 541 /* protect vl arb cache */ 542 spinlock_t lock; 543 struct ib_vl_weight_elem table[VL_ARB_TABLE_SIZE]; 544 }; 545 546 /* 547 * The structure below encapsulates data relevant to a physical IB Port. 548 * Current chips support only one such port, but the separation 549 * clarifies things a bit. Note that to conform to IB conventions, 550 * port-numbers are one-based. The first or only port is port1. 551 */ 552 struct hfi1_pportdata { 553 struct hfi1_ibport ibport_data; 554 555 struct hfi1_devdata *dd; 556 struct kobject pport_cc_kobj; 557 struct kobject sc2vl_kobj; 558 struct kobject sl2sc_kobj; 559 struct kobject vl2mtu_kobj; 560 561 /* PHY support */ 562 u32 port_type; 563 struct qsfp_data qsfp_info; 564 565 /* GUID for this interface, in host order */ 566 u64 guid; 567 /* GUID for peer interface, in host order */ 568 u64 neighbor_guid; 569 570 /* up or down physical link state */ 571 u32 linkup; 572 573 /* 574 * this address is mapped read-only into user processes so they can 575 * get status cheaply, whenever they want. One qword of status per port 576 */ 577 u64 *statusp; 578 579 /* SendDMA related entries */ 580 581 struct workqueue_struct *hfi1_wq; 582 583 /* move out of interrupt context */ 584 struct work_struct link_vc_work; 585 struct work_struct link_up_work; 586 struct work_struct link_down_work; 587 struct work_struct sma_message_work; 588 struct work_struct freeze_work; 589 struct work_struct link_downgrade_work; 590 struct work_struct link_bounce_work; 591 struct delayed_work start_link_work; 592 /* host link state variables */ 593 struct mutex hls_lock; 594 u32 host_link_state; 595 596 u32 lstate; /* logical link state */ 597 598 /* these are the "32 bit" regs */ 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 u32 current_egress_rate; /* units [10^6 bits/sec] */ 607 /* LID programmed for this instance */ 608 u16 lid; 609 /* list of pkeys programmed; 0 if not set */ 610 u16 pkeys[MAX_PKEY_VALUES]; 611 u16 link_width_supported; 612 u16 link_width_downgrade_supported; 613 u16 link_speed_supported; 614 u16 link_width_enabled; 615 u16 link_width_downgrade_enabled; 616 u16 link_speed_enabled; 617 u16 link_width_active; 618 u16 link_width_downgrade_tx_active; 619 u16 link_width_downgrade_rx_active; 620 u16 link_speed_active; 621 u8 vls_supported; 622 u8 vls_operational; 623 u8 actual_vls_operational; 624 /* LID mask control */ 625 u8 lmc; 626 /* Rx Polarity inversion (compensate for ~tx on partner) */ 627 u8 rx_pol_inv; 628 629 u8 hw_pidx; /* physical port index */ 630 u8 port; /* IB port number and index into dd->pports - 1 */ 631 /* type of neighbor node */ 632 u8 neighbor_type; 633 u8 neighbor_normal; 634 u8 neighbor_fm_security; /* 1 if firmware checking is disabled */ 635 u8 neighbor_port_number; 636 u8 is_sm_config_started; 637 u8 offline_disabled_reason; 638 u8 is_active_optimize_enabled; 639 u8 driver_link_ready; /* driver ready for active link */ 640 u8 link_enabled; /* link enabled? */ 641 u8 linkinit_reason; 642 u8 local_tx_rate; /* rate given to 8051 firmware */ 643 u8 last_pstate; /* info only */ 644 u8 qsfp_retry_count; 645 646 /* placeholders for IB MAD packet settings */ 647 u8 overrun_threshold; 648 u8 phy_error_threshold; 649 650 /* Used to override LED behavior for things like maintenance beaconing*/ 651 /* 652 * Alternates per phase of blink 653 * [0] holds LED off duration, [1] holds LED on duration 654 */ 655 unsigned long led_override_vals[2]; 656 u8 led_override_phase; /* LSB picks from vals[] */ 657 atomic_t led_override_timer_active; 658 /* Used to flash LEDs in override mode */ 659 struct timer_list led_override_timer; 660 661 u32 sm_trap_qp; 662 u32 sa_qp; 663 664 /* 665 * cca_timer_lock protects access to the per-SL cca_timer 666 * structures (specifically the ccti member). 667 */ 668 spinlock_t cca_timer_lock ____cacheline_aligned_in_smp; 669 struct cca_timer cca_timer[OPA_MAX_SLS]; 670 671 /* List of congestion control table entries */ 672 struct ib_cc_table_entry_shadow ccti_entries[CC_TABLE_SHADOW_MAX]; 673 674 /* congestion entries, each entry corresponding to a SL */ 675 struct opa_congestion_setting_entry_shadow 676 congestion_entries[OPA_MAX_SLS]; 677 678 /* 679 * cc_state_lock protects (write) access to the per-port 680 * struct cc_state. 681 */ 682 spinlock_t cc_state_lock ____cacheline_aligned_in_smp; 683 684 struct cc_state __rcu *cc_state; 685 686 /* Total number of congestion control table entries */ 687 u16 total_cct_entry; 688 689 /* Bit map identifying service level */ 690 u32 cc_sl_control_map; 691 692 /* CA's max number of 64 entry units in the congestion control table */ 693 u8 cc_max_table_entries; 694 695 /* 696 * begin congestion log related entries 697 * cc_log_lock protects all congestion log related data 698 */ 699 spinlock_t cc_log_lock ____cacheline_aligned_in_smp; 700 u8 threshold_cong_event_map[OPA_MAX_SLS / 8]; 701 u16 threshold_event_counter; 702 struct opa_hfi1_cong_log_event_internal cc_events[OPA_CONG_LOG_ELEMS]; 703 int cc_log_idx; /* index for logging events */ 704 int cc_mad_idx; /* index for reporting events */ 705 /* end congestion log related entries */ 706 707 struct vl_arb_cache vl_arb_cache[MAX_PRIO_TABLE]; 708 709 /* port relative counter buffer */ 710 u64 *cntrs; 711 /* port relative synthetic counter buffer */ 712 u64 *scntrs; 713 /* port_xmit_discards are synthesized from different egress errors */ 714 u64 port_xmit_discards; 715 u64 port_xmit_discards_vl[C_VL_COUNT]; 716 u64 port_xmit_constraint_errors; 717 u64 port_rcv_constraint_errors; 718 /* count of 'link_err' interrupts from DC */ 719 u64 link_downed; 720 /* number of times link retrained successfully */ 721 u64 link_up; 722 /* number of times a link unknown frame was reported */ 723 u64 unknown_frame_count; 724 /* port_ltp_crc_mode is returned in 'portinfo' MADs */ 725 u16 port_ltp_crc_mode; 726 /* port_crc_mode_enabled is the crc we support */ 727 u8 port_crc_mode_enabled; 728 /* mgmt_allowed is also returned in 'portinfo' MADs */ 729 u8 mgmt_allowed; 730 u8 part_enforce; /* partition enforcement flags */ 731 struct link_down_reason local_link_down_reason; 732 struct link_down_reason neigh_link_down_reason; 733 /* Value to be sent to link peer on LinkDown .*/ 734 u8 remote_link_down_reason; 735 /* Error events that will cause a port bounce. */ 736 u32 port_error_action; 737 struct work_struct linkstate_active_work; 738 /* Does this port need to prescan for FECNs */ 739 bool cc_prescan; 740 }; 741 742 typedef int (*rhf_rcv_function_ptr)(struct hfi1_packet *packet); 743 744 typedef void (*opcode_handler)(struct hfi1_packet *packet); 745 746 /* return values for the RHF receive functions */ 747 #define RHF_RCV_CONTINUE 0 /* keep going */ 748 #define RHF_RCV_DONE 1 /* stop, this packet processed */ 749 #define RHF_RCV_REPROCESS 2 /* stop. retain this packet */ 750 751 struct rcv_array_data { 752 u8 group_size; 753 u16 ngroups; 754 u16 nctxt_extra; 755 }; 756 757 struct per_vl_data { 758 u16 mtu; 759 struct send_context *sc; 760 }; 761 762 /* 16 to directly index */ 763 #define PER_VL_SEND_CONTEXTS 16 764 765 struct err_info_rcvport { 766 u8 status_and_code; 767 u64 packet_flit1; 768 u64 packet_flit2; 769 }; 770 771 struct err_info_constraint { 772 u8 status; 773 u16 pkey; 774 u32 slid; 775 }; 776 777 struct hfi1_temp { 778 unsigned int curr; /* current temperature */ 779 unsigned int lo_lim; /* low temperature limit */ 780 unsigned int hi_lim; /* high temperature limit */ 781 unsigned int crit_lim; /* critical temperature limit */ 782 u8 triggers; /* temperature triggers */ 783 }; 784 785 struct hfi1_i2c_bus { 786 struct hfi1_devdata *controlling_dd; /* current controlling device */ 787 struct i2c_adapter adapter; /* bus details */ 788 struct i2c_algo_bit_data algo; /* bus algorithm details */ 789 int num; /* bus number, 0 or 1 */ 790 }; 791 792 /* common data between shared ASIC HFIs */ 793 struct hfi1_asic_data { 794 struct hfi1_devdata *dds[2]; /* back pointers */ 795 struct mutex asic_resource_mutex; 796 struct hfi1_i2c_bus *i2c_bus0; 797 struct hfi1_i2c_bus *i2c_bus1; 798 }; 799 800 /* device data struct now contains only "general per-device" info. 801 * fields related to a physical IB port are in a hfi1_pportdata struct. 802 */ 803 struct sdma_engine; 804 struct sdma_vl_map; 805 806 #define BOARD_VERS_MAX 96 /* how long the version string can be */ 807 #define SERIAL_MAX 16 /* length of the serial number */ 808 809 typedef int (*send_routine)(struct rvt_qp *, struct hfi1_pkt_state *, u64); 810 struct hfi1_devdata { 811 struct hfi1_ibdev verbs_dev; /* must be first */ 812 struct list_head list; 813 /* pointers to related structs for this device */ 814 /* pci access data structure */ 815 struct pci_dev *pcidev; 816 struct cdev user_cdev; 817 struct cdev diag_cdev; 818 struct cdev ui_cdev; 819 struct device *user_device; 820 struct device *diag_device; 821 struct device *ui_device; 822 823 /* mem-mapped pointer to base of chip regs */ 824 u8 __iomem *kregbase; 825 /* end of mem-mapped chip space excluding sendbuf and user regs */ 826 u8 __iomem *kregend; 827 /* physical address of chip for io_remap, etc. */ 828 resource_size_t physaddr; 829 /* receive context data */ 830 struct hfi1_ctxtdata **rcd; 831 /* send context data */ 832 struct send_context_info *send_contexts; 833 /* map hardware send contexts to software index */ 834 u8 *hw_to_sw; 835 /* spinlock for allocating and releasing send context resources */ 836 spinlock_t sc_lock; 837 /* Per VL data. Enough for all VLs but not all elements are set/used. */ 838 struct per_vl_data vld[PER_VL_SEND_CONTEXTS]; 839 /* lock for pio_map */ 840 spinlock_t pio_map_lock; 841 /* array of kernel send contexts */ 842 struct send_context **kernel_send_context; 843 /* array of vl maps */ 844 struct pio_vl_map __rcu *pio_map; 845 /* seqlock for sc2vl */ 846 seqlock_t sc2vl_lock; 847 u64 sc2vl[4]; 848 /* Send Context initialization lock. */ 849 spinlock_t sc_init_lock; 850 851 /* fields common to all SDMA engines */ 852 853 /* default flags to last descriptor */ 854 u64 default_desc1; 855 volatile __le64 *sdma_heads_dma; /* DMA'ed by chip */ 856 dma_addr_t sdma_heads_phys; 857 void *sdma_pad_dma; /* DMA'ed by chip */ 858 dma_addr_t sdma_pad_phys; 859 /* for deallocation */ 860 size_t sdma_heads_size; 861 /* number from the chip */ 862 u32 chip_sdma_engines; 863 /* num used */ 864 u32 num_sdma; 865 /* lock for sdma_map */ 866 spinlock_t sde_map_lock; 867 /* array of engines sized by num_sdma */ 868 struct sdma_engine *per_sdma; 869 /* array of vl maps */ 870 struct sdma_vl_map __rcu *sdma_map; 871 /* SPC freeze waitqueue and variable */ 872 wait_queue_head_t sdma_unfreeze_wq; 873 atomic_t sdma_unfreeze_count; 874 875 /* common data between shared ASIC HFIs in this OS */ 876 struct hfi1_asic_data *asic_data; 877 878 /* hfi1_pportdata, points to array of (physical) port-specific 879 * data structs, indexed by pidx (0..n-1) 880 */ 881 struct hfi1_pportdata *pport; 882 883 /* mem-mapped pointer to base of PIO buffers */ 884 void __iomem *piobase; 885 /* 886 * write-combining mem-mapped pointer to base of RcvArray 887 * memory. 888 */ 889 void __iomem *rcvarray_wc; 890 /* 891 * credit return base - a per-NUMA range of DMA address that 892 * the chip will use to update the per-context free counter 893 */ 894 struct credit_return_base *cr_base; 895 896 /* send context numbers and sizes for each type */ 897 struct sc_config_sizes sc_sizes[SC_MAX]; 898 899 u32 lcb_access_count; /* count of LCB users */ 900 901 char *boardname; /* human readable board info */ 902 903 /* device (not port) flags, basically device capabilities */ 904 u32 flags; 905 906 /* reset value */ 907 u64 z_int_counter; 908 u64 z_rcv_limit; 909 u64 z_send_schedule; 910 /* percpu int_counter */ 911 u64 __percpu *int_counter; 912 u64 __percpu *rcv_limit; 913 u64 __percpu *send_schedule; 914 /* number of receive contexts in use by the driver */ 915 u32 num_rcv_contexts; 916 /* number of pio send contexts in use by the driver */ 917 u32 num_send_contexts; 918 /* 919 * number of ctxts available for PSM open 920 */ 921 u32 freectxts; 922 /* total number of available user/PSM contexts */ 923 u32 num_user_contexts; 924 /* base receive interrupt timeout, in CSR units */ 925 u32 rcv_intr_timeout_csr; 926 927 u64 __iomem *egrtidbase; 928 spinlock_t sendctrl_lock; /* protect changes to SendCtrl */ 929 spinlock_t rcvctrl_lock; /* protect changes to RcvCtrl */ 930 /* around rcd and (user ctxts) ctxt_cnt use (intr vs free) */ 931 spinlock_t uctxt_lock; /* rcd and user context changes */ 932 /* exclusive access to 8051 */ 933 spinlock_t dc8051_lock; 934 /* exclusive access to 8051 memory */ 935 spinlock_t dc8051_memlock; 936 int dc8051_timed_out; /* remember if the 8051 timed out */ 937 /* 938 * A page that will hold event notification bitmaps for all 939 * contexts. This page will be mapped into all processes. 940 */ 941 unsigned long *events; 942 /* 943 * per unit status, see also portdata statusp 944 * mapped read-only into user processes so they can get unit and 945 * IB link status cheaply 946 */ 947 struct hfi1_status *status; 948 u32 freezelen; /* max length of freezemsg */ 949 950 /* revision register shadow */ 951 u64 revision; 952 /* Base GUID for device (network order) */ 953 u64 base_guid; 954 955 /* these are the "32 bit" regs */ 956 957 /* value we put in kr_rcvhdrsize */ 958 u32 rcvhdrsize; 959 /* number of receive contexts the chip supports */ 960 u32 chip_rcv_contexts; 961 /* number of receive array entries */ 962 u32 chip_rcv_array_count; 963 /* number of PIO send contexts the chip supports */ 964 u32 chip_send_contexts; 965 /* number of bytes in the PIO memory buffer */ 966 u32 chip_pio_mem_size; 967 /* number of bytes in the SDMA memory buffer */ 968 u32 chip_sdma_mem_size; 969 970 /* size of each rcvegrbuffer */ 971 u32 rcvegrbufsize; 972 /* log2 of above */ 973 u16 rcvegrbufsize_shift; 974 /* both sides of the PCIe link are gen3 capable */ 975 u8 link_gen3_capable; 976 /* localbus width (1, 2,4,8,16,32) from config space */ 977 u32 lbus_width; 978 /* localbus speed in MHz */ 979 u32 lbus_speed; 980 int unit; /* unit # of this chip */ 981 int node; /* home node of this chip */ 982 983 /* save these PCI fields to restore after a reset */ 984 u32 pcibar0; 985 u32 pcibar1; 986 u32 pci_rom; 987 u16 pci_command; 988 u16 pcie_devctl; 989 u16 pcie_lnkctl; 990 u16 pcie_devctl2; 991 u32 pci_msix0; 992 u32 pci_lnkctl3; 993 u32 pci_tph2; 994 995 /* 996 * ASCII serial number, from flash, large enough for original 997 * all digit strings, and longer serial number format 998 */ 999 u8 serial[SERIAL_MAX]; 1000 /* human readable board version */ 1001 u8 boardversion[BOARD_VERS_MAX]; 1002 u8 lbus_info[32]; /* human readable localbus info */ 1003 /* chip major rev, from CceRevision */ 1004 u8 majrev; 1005 /* chip minor rev, from CceRevision */ 1006 u8 minrev; 1007 /* hardware ID */ 1008 u8 hfi1_id; 1009 /* implementation code */ 1010 u8 icode; 1011 /* default link down value (poll/sleep) */ 1012 u8 link_default; 1013 /* vAU of this device */ 1014 u8 vau; 1015 /* vCU of this device */ 1016 u8 vcu; 1017 /* link credits of this device */ 1018 u16 link_credits; 1019 /* initial vl15 credits to use */ 1020 u16 vl15_init; 1021 1022 /* Misc small ints */ 1023 /* Number of physical ports available */ 1024 u8 num_pports; 1025 /* Lowest context number which can be used by user processes */ 1026 u8 first_user_ctxt; 1027 u8 n_krcv_queues; 1028 u8 qos_shift; 1029 u8 qpn_mask; 1030 1031 u16 rhf_offset; /* offset of RHF within receive header entry */ 1032 u16 irev; /* implementation revision */ 1033 u16 dc8051_ver; /* 8051 firmware version */ 1034 1035 struct platform_config platform_config; 1036 struct platform_config_cache pcfg_cache; 1037 1038 struct diag_client *diag_client; 1039 spinlock_t hfi1_diag_trans_lock; /* protect diag observer ops */ 1040 1041 u8 psxmitwait_supported; 1042 /* cycle length of PS* counters in HW (in picoseconds) */ 1043 u16 psxmitwait_check_rate; 1044 1045 /* MSI-X information */ 1046 struct hfi1_msix_entry *msix_entries; 1047 u32 num_msix_entries; 1048 1049 /* INTx information */ 1050 u32 requested_intx_irq; /* did we request one? */ 1051 char intx_name[MAX_NAME_SIZE]; /* INTx name */ 1052 1053 /* general interrupt: mask of handled interrupts */ 1054 u64 gi_mask[CCE_NUM_INT_CSRS]; 1055 1056 struct rcv_array_data rcv_entries; 1057 1058 /* 1059 * 64 bit synthetic counters 1060 */ 1061 struct timer_list synth_stats_timer; 1062 1063 /* 1064 * device counters 1065 */ 1066 char *cntrnames; 1067 size_t cntrnameslen; 1068 size_t ndevcntrs; 1069 u64 *cntrs; 1070 u64 *scntrs; 1071 1072 /* 1073 * remembered values for synthetic counters 1074 */ 1075 u64 last_tx; 1076 u64 last_rx; 1077 1078 /* 1079 * per-port counters 1080 */ 1081 size_t nportcntrs; 1082 char *portcntrnames; 1083 size_t portcntrnameslen; 1084 1085 struct err_info_rcvport err_info_rcvport; 1086 struct err_info_constraint err_info_rcv_constraint; 1087 struct err_info_constraint err_info_xmit_constraint; 1088 u8 err_info_uncorrectable; 1089 u8 err_info_fmconfig; 1090 1091 atomic_t drop_packet; 1092 u8 do_drop; 1093 1094 /* 1095 * Software counters for the status bits defined by the 1096 * associated error status registers 1097 */ 1098 u64 cce_err_status_cnt[NUM_CCE_ERR_STATUS_COUNTERS]; 1099 u64 rcv_err_status_cnt[NUM_RCV_ERR_STATUS_COUNTERS]; 1100 u64 misc_err_status_cnt[NUM_MISC_ERR_STATUS_COUNTERS]; 1101 u64 send_pio_err_status_cnt[NUM_SEND_PIO_ERR_STATUS_COUNTERS]; 1102 u64 send_dma_err_status_cnt[NUM_SEND_DMA_ERR_STATUS_COUNTERS]; 1103 u64 send_egress_err_status_cnt[NUM_SEND_EGRESS_ERR_STATUS_COUNTERS]; 1104 u64 send_err_status_cnt[NUM_SEND_ERR_STATUS_COUNTERS]; 1105 1106 /* Software counter that spans all contexts */ 1107 u64 sw_ctxt_err_status_cnt[NUM_SEND_CTXT_ERR_STATUS_COUNTERS]; 1108 /* Software counter that spans all DMA engines */ 1109 u64 sw_send_dma_eng_err_status_cnt[ 1110 NUM_SEND_DMA_ENG_ERR_STATUS_COUNTERS]; 1111 /* Software counter that aggregates all cce_err_status errors */ 1112 u64 sw_cce_err_status_aggregate; 1113 /* Software counter that aggregates all bypass packet rcv errors */ 1114 u64 sw_rcv_bypass_packet_errors; 1115 /* receive interrupt functions */ 1116 rhf_rcv_function_ptr *rhf_rcv_function_map; 1117 rhf_rcv_function_ptr normal_rhf_rcv_functions[8]; 1118 1119 /* 1120 * Capability to have different send engines simply by changing a 1121 * pointer value. 1122 */ 1123 send_routine process_pio_send; 1124 send_routine process_dma_send; 1125 void (*pio_inline_send)(struct hfi1_devdata *dd, struct pio_buf *pbuf, 1126 u64 pbc, const void *from, size_t count); 1127 1128 /* OUI comes from the HW. Used everywhere as 3 separate bytes. */ 1129 u8 oui1; 1130 u8 oui2; 1131 u8 oui3; 1132 /* Timer and counter used to detect RcvBufOvflCnt changes */ 1133 struct timer_list rcverr_timer; 1134 u32 rcv_ovfl_cnt; 1135 1136 wait_queue_head_t event_queue; 1137 1138 /* Save the enabled LCB error bits */ 1139 u64 lcb_err_en; 1140 u8 dc_shutdown; 1141 1142 /* receive context tail dummy address */ 1143 __le64 *rcvhdrtail_dummy_kvaddr; 1144 dma_addr_t rcvhdrtail_dummy_dma; 1145 1146 bool eprom_available; /* true if EPROM is available for this device */ 1147 bool aspm_supported; /* Does HW support ASPM */ 1148 bool aspm_enabled; /* ASPM state: enabled/disabled */ 1149 /* Serialize ASPM enable/disable between multiple verbs contexts */ 1150 spinlock_t aspm_lock; 1151 /* Number of verbs contexts which have disabled ASPM */ 1152 atomic_t aspm_disabled_cnt; 1153 /* Keeps track of user space clients */ 1154 atomic_t user_refcount; 1155 /* Used to wait for outstanding user space clients before dev removal */ 1156 struct completion user_comp; 1157 1158 struct hfi1_affinity *affinity; 1159 struct rhashtable sdma_rht; 1160 struct kobject kobj; 1161 }; 1162 1163 /* 8051 firmware version helper */ 1164 #define dc8051_ver(a, b) ((a) << 8 | (b)) 1165 #define dc8051_ver_maj(a) ((a & 0xff00) >> 8) 1166 #define dc8051_ver_min(a) (a & 0x00ff) 1167 1168 /* f_put_tid types */ 1169 #define PT_EXPECTED 0 1170 #define PT_EAGER 1 1171 #define PT_INVALID 2 1172 1173 struct tid_rb_node; 1174 struct mmu_rb_node; 1175 struct mmu_rb_handler; 1176 1177 /* Private data for file operations */ 1178 struct hfi1_filedata { 1179 struct hfi1_ctxtdata *uctxt; 1180 unsigned subctxt; 1181 struct hfi1_user_sdma_comp_q *cq; 1182 struct hfi1_user_sdma_pkt_q *pq; 1183 /* for cpu affinity; -1 if none */ 1184 int rec_cpu_num; 1185 u32 tid_n_pinned; 1186 struct mmu_rb_handler *handler; 1187 struct tid_rb_node **entry_to_rb; 1188 spinlock_t tid_lock; /* protect tid_[limit,used] counters */ 1189 u32 tid_limit; 1190 u32 tid_used; 1191 u32 *invalid_tids; 1192 u32 invalid_tid_idx; 1193 /* protect invalid_tids array and invalid_tid_idx */ 1194 spinlock_t invalid_lock; 1195 struct mm_struct *mm; 1196 }; 1197 1198 extern struct list_head hfi1_dev_list; 1199 extern spinlock_t hfi1_devs_lock; 1200 struct hfi1_devdata *hfi1_lookup(int unit); 1201 extern u32 hfi1_cpulist_count; 1202 extern unsigned long *hfi1_cpulist; 1203 1204 int hfi1_init(struct hfi1_devdata *, int); 1205 int hfi1_count_units(int *npresentp, int *nupp); 1206 int hfi1_count_active_units(void); 1207 1208 int hfi1_diag_add(struct hfi1_devdata *); 1209 void hfi1_diag_remove(struct hfi1_devdata *); 1210 void handle_linkup_change(struct hfi1_devdata *dd, u32 linkup); 1211 1212 void handle_user_interrupt(struct hfi1_ctxtdata *rcd); 1213 1214 int hfi1_create_rcvhdrq(struct hfi1_devdata *, struct hfi1_ctxtdata *); 1215 int hfi1_setup_eagerbufs(struct hfi1_ctxtdata *); 1216 int hfi1_create_ctxts(struct hfi1_devdata *dd); 1217 struct hfi1_ctxtdata *hfi1_create_ctxtdata(struct hfi1_pportdata *, u32, int); 1218 void hfi1_init_pportdata(struct pci_dev *, struct hfi1_pportdata *, 1219 struct hfi1_devdata *, u8, u8); 1220 void hfi1_free_ctxtdata(struct hfi1_devdata *, struct hfi1_ctxtdata *); 1221 1222 int handle_receive_interrupt(struct hfi1_ctxtdata *, int); 1223 int handle_receive_interrupt_nodma_rtail(struct hfi1_ctxtdata *, int); 1224 int handle_receive_interrupt_dma_rtail(struct hfi1_ctxtdata *, int); 1225 void set_all_slowpath(struct hfi1_devdata *dd); 1226 1227 extern const struct pci_device_id hfi1_pci_tbl[]; 1228 1229 /* receive packet handler dispositions */ 1230 #define RCV_PKT_OK 0x0 /* keep going */ 1231 #define RCV_PKT_LIMIT 0x1 /* stop, hit limit, start thread */ 1232 #define RCV_PKT_DONE 0x2 /* stop, no more packets detected */ 1233 1234 /* calculate the current RHF address */ 1235 static inline __le32 *get_rhf_addr(struct hfi1_ctxtdata *rcd) 1236 { 1237 return (__le32 *)rcd->rcvhdrq + rcd->head + rcd->dd->rhf_offset; 1238 } 1239 1240 int hfi1_reset_device(int); 1241 1242 /* return the driver's idea of the logical OPA port state */ 1243 static inline u32 driver_lstate(struct hfi1_pportdata *ppd) 1244 { 1245 return ppd->lstate; /* use the cached value */ 1246 } 1247 1248 void receive_interrupt_work(struct work_struct *work); 1249 1250 /* extract service channel from header and rhf */ 1251 static inline int hdr2sc(struct ib_header *hdr, u64 rhf) 1252 { 1253 return ((be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf) | 1254 ((!!(rhf_dc_info(rhf))) << 4); 1255 } 1256 1257 #define HFI1_JKEY_WIDTH 16 1258 #define HFI1_JKEY_MASK (BIT(16) - 1) 1259 #define HFI1_ADMIN_JKEY_RANGE 32 1260 1261 /* 1262 * J_KEYs are split and allocated in the following groups: 1263 * 0 - 31 - users with administrator privileges 1264 * 32 - 63 - kernel protocols using KDETH packets 1265 * 64 - 65535 - all other users using KDETH packets 1266 */ 1267 static inline u16 generate_jkey(kuid_t uid) 1268 { 1269 u16 jkey = from_kuid(current_user_ns(), uid) & HFI1_JKEY_MASK; 1270 1271 if (capable(CAP_SYS_ADMIN)) 1272 jkey &= HFI1_ADMIN_JKEY_RANGE - 1; 1273 else if (jkey < 64) 1274 jkey |= BIT(HFI1_JKEY_WIDTH - 1); 1275 1276 return jkey; 1277 } 1278 1279 /* 1280 * active_egress_rate 1281 * 1282 * returns the active egress rate in units of [10^6 bits/sec] 1283 */ 1284 static inline u32 active_egress_rate(struct hfi1_pportdata *ppd) 1285 { 1286 u16 link_speed = ppd->link_speed_active; 1287 u16 link_width = ppd->link_width_active; 1288 u32 egress_rate; 1289 1290 if (link_speed == OPA_LINK_SPEED_25G) 1291 egress_rate = 25000; 1292 else /* assume OPA_LINK_SPEED_12_5G */ 1293 egress_rate = 12500; 1294 1295 switch (link_width) { 1296 case OPA_LINK_WIDTH_4X: 1297 egress_rate *= 4; 1298 break; 1299 case OPA_LINK_WIDTH_3X: 1300 egress_rate *= 3; 1301 break; 1302 case OPA_LINK_WIDTH_2X: 1303 egress_rate *= 2; 1304 break; 1305 default: 1306 /* assume IB_WIDTH_1X */ 1307 break; 1308 } 1309 1310 return egress_rate; 1311 } 1312 1313 /* 1314 * egress_cycles 1315 * 1316 * Returns the number of 'fabric clock cycles' to egress a packet 1317 * of length 'len' bytes, at 'rate' Mbit/s. Since the fabric clock 1318 * rate is (approximately) 805 MHz, the units of the returned value 1319 * are (1/805 MHz). 1320 */ 1321 static inline u32 egress_cycles(u32 len, u32 rate) 1322 { 1323 u32 cycles; 1324 1325 /* 1326 * cycles is: 1327 * 1328 * (length) [bits] / (rate) [bits/sec] 1329 * --------------------------------------------------- 1330 * fabric_clock_period == 1 /(805 * 10^6) [cycles/sec] 1331 */ 1332 1333 cycles = len * 8; /* bits */ 1334 cycles *= 805; 1335 cycles /= rate; 1336 1337 return cycles; 1338 } 1339 1340 void set_link_ipg(struct hfi1_pportdata *ppd); 1341 void process_becn(struct hfi1_pportdata *ppd, u8 sl, u16 rlid, u32 lqpn, 1342 u32 rqpn, u8 svc_type); 1343 void return_cnp(struct hfi1_ibport *ibp, struct rvt_qp *qp, u32 remote_qpn, 1344 u32 pkey, u32 slid, u32 dlid, u8 sc5, 1345 const struct ib_grh *old_grh); 1346 #define PKEY_CHECK_INVALID -1 1347 int egress_pkey_check(struct hfi1_pportdata *ppd, __be16 *lrh, __be32 *bth, 1348 u8 sc5, int8_t s_pkey_index); 1349 1350 #define PACKET_EGRESS_TIMEOUT 350 1351 static inline void pause_for_credit_return(struct hfi1_devdata *dd) 1352 { 1353 /* Pause at least 1us, to ensure chip returns all credits */ 1354 u32 usec = cclock_to_ns(dd, PACKET_EGRESS_TIMEOUT) / 1000; 1355 1356 udelay(usec ? usec : 1); 1357 } 1358 1359 /** 1360 * sc_to_vlt() reverse lookup sc to vl 1361 * @dd - devdata 1362 * @sc5 - 5 bit sc 1363 */ 1364 static inline u8 sc_to_vlt(struct hfi1_devdata *dd, u8 sc5) 1365 { 1366 unsigned seq; 1367 u8 rval; 1368 1369 if (sc5 >= OPA_MAX_SCS) 1370 return (u8)(0xff); 1371 1372 do { 1373 seq = read_seqbegin(&dd->sc2vl_lock); 1374 rval = *(((u8 *)dd->sc2vl) + sc5); 1375 } while (read_seqretry(&dd->sc2vl_lock, seq)); 1376 1377 return rval; 1378 } 1379 1380 #define PKEY_MEMBER_MASK 0x8000 1381 #define PKEY_LOW_15_MASK 0x7fff 1382 1383 /* 1384 * ingress_pkey_matches_entry - return 1 if the pkey matches ent (ent 1385 * being an entry from the ingress partition key table), return 0 1386 * otherwise. Use the matching criteria for ingress partition keys 1387 * specified in the OPAv1 spec., section 9.10.14. 1388 */ 1389 static inline int ingress_pkey_matches_entry(u16 pkey, u16 ent) 1390 { 1391 u16 mkey = pkey & PKEY_LOW_15_MASK; 1392 u16 ment = ent & PKEY_LOW_15_MASK; 1393 1394 if (mkey == ment) { 1395 /* 1396 * If pkey[15] is clear (limited partition member), 1397 * is bit 15 in the corresponding table element 1398 * clear (limited member)? 1399 */ 1400 if (!(pkey & PKEY_MEMBER_MASK)) 1401 return !!(ent & PKEY_MEMBER_MASK); 1402 return 1; 1403 } 1404 return 0; 1405 } 1406 1407 /* 1408 * ingress_pkey_table_search - search the entire pkey table for 1409 * an entry which matches 'pkey'. return 0 if a match is found, 1410 * and 1 otherwise. 1411 */ 1412 static int ingress_pkey_table_search(struct hfi1_pportdata *ppd, u16 pkey) 1413 { 1414 int i; 1415 1416 for (i = 0; i < MAX_PKEY_VALUES; i++) { 1417 if (ingress_pkey_matches_entry(pkey, ppd->pkeys[i])) 1418 return 0; 1419 } 1420 return 1; 1421 } 1422 1423 /* 1424 * ingress_pkey_table_fail - record a failure of ingress pkey validation, 1425 * i.e., increment port_rcv_constraint_errors for the port, and record 1426 * the 'error info' for this failure. 1427 */ 1428 static void ingress_pkey_table_fail(struct hfi1_pportdata *ppd, u16 pkey, 1429 u16 slid) 1430 { 1431 struct hfi1_devdata *dd = ppd->dd; 1432 1433 incr_cntr64(&ppd->port_rcv_constraint_errors); 1434 if (!(dd->err_info_rcv_constraint.status & OPA_EI_STATUS_SMASK)) { 1435 dd->err_info_rcv_constraint.status |= OPA_EI_STATUS_SMASK; 1436 dd->err_info_rcv_constraint.slid = slid; 1437 dd->err_info_rcv_constraint.pkey = pkey; 1438 } 1439 } 1440 1441 /* 1442 * ingress_pkey_check - Return 0 if the ingress pkey is valid, return 1 1443 * otherwise. Use the criteria in the OPAv1 spec, section 9.10.14. idx 1444 * is a hint as to the best place in the partition key table to begin 1445 * searching. This function should not be called on the data path because 1446 * of performance reasons. On datapath pkey check is expected to be done 1447 * by HW and rcv_pkey_check function should be called instead. 1448 */ 1449 static inline int ingress_pkey_check(struct hfi1_pportdata *ppd, u16 pkey, 1450 u8 sc5, u8 idx, u16 slid) 1451 { 1452 if (!(ppd->part_enforce & HFI1_PART_ENFORCE_IN)) 1453 return 0; 1454 1455 /* If SC15, pkey[0:14] must be 0x7fff */ 1456 if ((sc5 == 0xf) && ((pkey & PKEY_LOW_15_MASK) != PKEY_LOW_15_MASK)) 1457 goto bad; 1458 1459 /* Is the pkey = 0x0, or 0x8000? */ 1460 if ((pkey & PKEY_LOW_15_MASK) == 0) 1461 goto bad; 1462 1463 /* The most likely matching pkey has index 'idx' */ 1464 if (ingress_pkey_matches_entry(pkey, ppd->pkeys[idx])) 1465 return 0; 1466 1467 /* no match - try the whole table */ 1468 if (!ingress_pkey_table_search(ppd, pkey)) 1469 return 0; 1470 1471 bad: 1472 ingress_pkey_table_fail(ppd, pkey, slid); 1473 return 1; 1474 } 1475 1476 /* 1477 * rcv_pkey_check - Return 0 if the ingress pkey is valid, return 1 1478 * otherwise. It only ensures pkey is vlid for QP0. This function 1479 * should be called on the data path instead of ingress_pkey_check 1480 * as on data path, pkey check is done by HW (except for QP0). 1481 */ 1482 static inline int rcv_pkey_check(struct hfi1_pportdata *ppd, u16 pkey, 1483 u8 sc5, u16 slid) 1484 { 1485 if (!(ppd->part_enforce & HFI1_PART_ENFORCE_IN)) 1486 return 0; 1487 1488 /* If SC15, pkey[0:14] must be 0x7fff */ 1489 if ((sc5 == 0xf) && ((pkey & PKEY_LOW_15_MASK) != PKEY_LOW_15_MASK)) 1490 goto bad; 1491 1492 return 0; 1493 bad: 1494 ingress_pkey_table_fail(ppd, pkey, slid); 1495 return 1; 1496 } 1497 1498 /* MTU handling */ 1499 1500 /* MTU enumeration, 256-4k match IB */ 1501 #define OPA_MTU_0 0 1502 #define OPA_MTU_256 1 1503 #define OPA_MTU_512 2 1504 #define OPA_MTU_1024 3 1505 #define OPA_MTU_2048 4 1506 #define OPA_MTU_4096 5 1507 1508 u32 lrh_max_header_bytes(struct hfi1_devdata *dd); 1509 int mtu_to_enum(u32 mtu, int default_if_bad); 1510 u16 enum_to_mtu(int); 1511 static inline int valid_ib_mtu(unsigned int mtu) 1512 { 1513 return mtu == 256 || mtu == 512 || 1514 mtu == 1024 || mtu == 2048 || 1515 mtu == 4096; 1516 } 1517 1518 static inline int valid_opa_max_mtu(unsigned int mtu) 1519 { 1520 return mtu >= 2048 && 1521 (valid_ib_mtu(mtu) || mtu == 8192 || mtu == 10240); 1522 } 1523 1524 int set_mtu(struct hfi1_pportdata *); 1525 1526 int hfi1_set_lid(struct hfi1_pportdata *, u32, u8); 1527 void hfi1_disable_after_error(struct hfi1_devdata *); 1528 int hfi1_set_uevent_bits(struct hfi1_pportdata *, const int); 1529 int hfi1_rcvbuf_validate(u32, u8, u16 *); 1530 1531 int fm_get_table(struct hfi1_pportdata *, int, void *); 1532 int fm_set_table(struct hfi1_pportdata *, int, void *); 1533 1534 void set_up_vl15(struct hfi1_devdata *dd, u8 vau, u16 vl15buf); 1535 void reset_link_credits(struct hfi1_devdata *dd); 1536 void assign_remote_cm_au_table(struct hfi1_devdata *dd, u8 vcu); 1537 1538 int set_buffer_control(struct hfi1_pportdata *ppd, struct buffer_control *bc); 1539 1540 static inline struct hfi1_devdata *dd_from_ppd(struct hfi1_pportdata *ppd) 1541 { 1542 return ppd->dd; 1543 } 1544 1545 static inline struct hfi1_devdata *dd_from_dev(struct hfi1_ibdev *dev) 1546 { 1547 return container_of(dev, struct hfi1_devdata, verbs_dev); 1548 } 1549 1550 static inline struct hfi1_devdata *dd_from_ibdev(struct ib_device *ibdev) 1551 { 1552 return dd_from_dev(to_idev(ibdev)); 1553 } 1554 1555 static inline struct hfi1_pportdata *ppd_from_ibp(struct hfi1_ibport *ibp) 1556 { 1557 return container_of(ibp, struct hfi1_pportdata, ibport_data); 1558 } 1559 1560 static inline struct hfi1_ibdev *dev_from_rdi(struct rvt_dev_info *rdi) 1561 { 1562 return container_of(rdi, struct hfi1_ibdev, rdi); 1563 } 1564 1565 static inline struct hfi1_ibport *to_iport(struct ib_device *ibdev, u8 port) 1566 { 1567 struct hfi1_devdata *dd = dd_from_ibdev(ibdev); 1568 unsigned pidx = port - 1; /* IB number port from 1, hdw from 0 */ 1569 1570 WARN_ON(pidx >= dd->num_pports); 1571 return &dd->pport[pidx].ibport_data; 1572 } 1573 1574 void hfi1_process_ecn_slowpath(struct rvt_qp *qp, struct hfi1_packet *pkt, 1575 bool do_cnp); 1576 static inline bool process_ecn(struct rvt_qp *qp, struct hfi1_packet *pkt, 1577 bool do_cnp) 1578 { 1579 struct ib_other_headers *ohdr = pkt->ohdr; 1580 u32 bth1; 1581 1582 bth1 = be32_to_cpu(ohdr->bth[1]); 1583 if (unlikely(bth1 & (HFI1_BECN_SMASK | HFI1_FECN_SMASK))) { 1584 hfi1_process_ecn_slowpath(qp, pkt, do_cnp); 1585 return bth1 & HFI1_FECN_SMASK; 1586 } 1587 return false; 1588 } 1589 1590 /* 1591 * Return the indexed PKEY from the port PKEY table. 1592 */ 1593 static inline u16 hfi1_get_pkey(struct hfi1_ibport *ibp, unsigned index) 1594 { 1595 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 1596 u16 ret; 1597 1598 if (index >= ARRAY_SIZE(ppd->pkeys)) 1599 ret = 0; 1600 else 1601 ret = ppd->pkeys[index]; 1602 1603 return ret; 1604 } 1605 1606 /* 1607 * Called by readers of cc_state only, must call under rcu_read_lock(). 1608 */ 1609 static inline struct cc_state *get_cc_state(struct hfi1_pportdata *ppd) 1610 { 1611 return rcu_dereference(ppd->cc_state); 1612 } 1613 1614 /* 1615 * Called by writers of cc_state only, must call under cc_state_lock. 1616 */ 1617 static inline 1618 struct cc_state *get_cc_state_protected(struct hfi1_pportdata *ppd) 1619 { 1620 return rcu_dereference_protected(ppd->cc_state, 1621 lockdep_is_held(&ppd->cc_state_lock)); 1622 } 1623 1624 /* 1625 * values for dd->flags (_device_ related flags) 1626 */ 1627 #define HFI1_INITTED 0x1 /* chip and driver up and initted */ 1628 #define HFI1_PRESENT 0x2 /* chip accesses can be done */ 1629 #define HFI1_FROZEN 0x4 /* chip in SPC freeze */ 1630 #define HFI1_HAS_SDMA_TIMEOUT 0x8 1631 #define HFI1_HAS_SEND_DMA 0x10 /* Supports Send DMA */ 1632 #define HFI1_FORCED_FREEZE 0x80 /* driver forced freeze mode */ 1633 1634 /* IB dword length mask in PBC (lower 11 bits); same for all chips */ 1635 #define HFI1_PBC_LENGTH_MASK ((1 << 11) - 1) 1636 1637 /* ctxt_flag bit offsets */ 1638 /* context has been setup */ 1639 #define HFI1_CTXT_SETUP_DONE 1 1640 /* waiting for a packet to arrive */ 1641 #define HFI1_CTXT_WAITING_RCV 2 1642 /* master has not finished initializing */ 1643 #define HFI1_CTXT_MASTER_UNINIT 4 1644 /* waiting for an urgent packet to arrive */ 1645 #define HFI1_CTXT_WAITING_URG 5 1646 1647 /* free up any allocated data at closes */ 1648 struct hfi1_devdata *hfi1_init_dd(struct pci_dev *, 1649 const struct pci_device_id *); 1650 void hfi1_free_devdata(struct hfi1_devdata *); 1651 struct hfi1_devdata *hfi1_alloc_devdata(struct pci_dev *pdev, size_t extra); 1652 1653 /* LED beaconing functions */ 1654 void hfi1_start_led_override(struct hfi1_pportdata *ppd, unsigned int timeon, 1655 unsigned int timeoff); 1656 void shutdown_led_override(struct hfi1_pportdata *ppd); 1657 1658 #define HFI1_CREDIT_RETURN_RATE (100) 1659 1660 /* 1661 * The number of words for the KDETH protocol field. If this is 1662 * larger then the actual field used, then part of the payload 1663 * will be in the header. 1664 * 1665 * Optimally, we want this sized so that a typical case will 1666 * use full cache lines. The typical local KDETH header would 1667 * be: 1668 * 1669 * Bytes Field 1670 * 8 LRH 1671 * 12 BHT 1672 * ?? KDETH 1673 * 8 RHF 1674 * --- 1675 * 28 + KDETH 1676 * 1677 * For a 64-byte cache line, KDETH would need to be 36 bytes or 9 DWORDS 1678 */ 1679 #define DEFAULT_RCVHDRSIZE 9 1680 1681 /* 1682 * Maximal header byte count: 1683 * 1684 * Bytes Field 1685 * 8 LRH 1686 * 40 GRH (optional) 1687 * 12 BTH 1688 * ?? KDETH 1689 * 8 RHF 1690 * --- 1691 * 68 + KDETH 1692 * 1693 * We also want to maintain a cache line alignment to assist DMA'ing 1694 * of the header bytes. Round up to a good size. 1695 */ 1696 #define DEFAULT_RCVHDR_ENTSIZE 32 1697 1698 bool hfi1_can_pin_pages(struct hfi1_devdata *dd, struct mm_struct *mm, 1699 u32 nlocked, u32 npages); 1700 int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, 1701 size_t npages, bool writable, struct page **pages); 1702 void hfi1_release_user_pages(struct mm_struct *mm, struct page **p, 1703 size_t npages, bool dirty); 1704 1705 static inline void clear_rcvhdrtail(const struct hfi1_ctxtdata *rcd) 1706 { 1707 *((u64 *)rcd->rcvhdrtail_kvaddr) = 0ULL; 1708 } 1709 1710 static inline u32 get_rcvhdrtail(const struct hfi1_ctxtdata *rcd) 1711 { 1712 /* 1713 * volatile because it's a DMA target from the chip, routine is 1714 * inlined, and don't want register caching or reordering. 1715 */ 1716 return (u32)le64_to_cpu(*rcd->rcvhdrtail_kvaddr); 1717 } 1718 1719 /* 1720 * sysfs interface. 1721 */ 1722 1723 extern const char ib_hfi1_version[]; 1724 1725 int hfi1_device_create(struct hfi1_devdata *); 1726 void hfi1_device_remove(struct hfi1_devdata *); 1727 1728 int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num, 1729 struct kobject *kobj); 1730 int hfi1_verbs_register_sysfs(struct hfi1_devdata *); 1731 void hfi1_verbs_unregister_sysfs(struct hfi1_devdata *); 1732 /* Hook for sysfs read of QSFP */ 1733 int qsfp_dump(struct hfi1_pportdata *ppd, char *buf, int len); 1734 1735 int hfi1_pcie_init(struct pci_dev *, const struct pci_device_id *); 1736 void hfi1_pcie_cleanup(struct pci_dev *); 1737 int hfi1_pcie_ddinit(struct hfi1_devdata *, struct pci_dev *); 1738 void hfi1_pcie_ddcleanup(struct hfi1_devdata *); 1739 void hfi1_pcie_flr(struct hfi1_devdata *); 1740 int pcie_speeds(struct hfi1_devdata *); 1741 void request_msix(struct hfi1_devdata *, u32 *, struct hfi1_msix_entry *); 1742 void hfi1_enable_intx(struct pci_dev *); 1743 void restore_pci_variables(struct hfi1_devdata *dd); 1744 int do_pcie_gen3_transition(struct hfi1_devdata *dd); 1745 int parse_platform_config(struct hfi1_devdata *dd); 1746 int get_platform_config_field(struct hfi1_devdata *dd, 1747 enum platform_config_table_type_encoding 1748 table_type, int table_index, int field_index, 1749 u32 *data, u32 len); 1750 1751 const char *get_unit_name(int unit); 1752 const char *get_card_name(struct rvt_dev_info *rdi); 1753 struct pci_dev *get_pci_dev(struct rvt_dev_info *rdi); 1754 1755 /* 1756 * Flush write combining store buffers (if present) and perform a write 1757 * barrier. 1758 */ 1759 static inline void flush_wc(void) 1760 { 1761 asm volatile("sfence" : : : "memory"); 1762 } 1763 1764 void handle_eflags(struct hfi1_packet *packet); 1765 int process_receive_ib(struct hfi1_packet *packet); 1766 int process_receive_bypass(struct hfi1_packet *packet); 1767 int process_receive_error(struct hfi1_packet *packet); 1768 int kdeth_process_expected(struct hfi1_packet *packet); 1769 int kdeth_process_eager(struct hfi1_packet *packet); 1770 int process_receive_invalid(struct hfi1_packet *packet); 1771 1772 void update_sge(struct rvt_sge_state *ss, u32 length); 1773 1774 /* global module parameter variables */ 1775 extern unsigned int hfi1_max_mtu; 1776 extern unsigned int hfi1_cu; 1777 extern unsigned int user_credit_return_threshold; 1778 extern int num_user_contexts; 1779 extern unsigned long n_krcvqs; 1780 extern uint krcvqs[]; 1781 extern int krcvqsset; 1782 extern uint kdeth_qp; 1783 extern uint loopback; 1784 extern uint quick_linkup; 1785 extern uint rcv_intr_timeout; 1786 extern uint rcv_intr_count; 1787 extern uint rcv_intr_dynamic; 1788 extern ushort link_crc_mask; 1789 1790 extern struct mutex hfi1_mutex; 1791 1792 /* Number of seconds before our card status check... */ 1793 #define STATUS_TIMEOUT 60 1794 1795 #define DRIVER_NAME "hfi1" 1796 #define HFI1_USER_MINOR_BASE 0 1797 #define HFI1_TRACE_MINOR 127 1798 #define HFI1_NMINORS 255 1799 1800 #define PCI_VENDOR_ID_INTEL 0x8086 1801 #define PCI_DEVICE_ID_INTEL0 0x24f0 1802 #define PCI_DEVICE_ID_INTEL1 0x24f1 1803 1804 #define HFI1_PKT_USER_SC_INTEGRITY \ 1805 (SEND_CTXT_CHECK_ENABLE_DISALLOW_NON_KDETH_PACKETS_SMASK \ 1806 | SEND_CTXT_CHECK_ENABLE_DISALLOW_KDETH_PACKETS_SMASK \ 1807 | SEND_CTXT_CHECK_ENABLE_DISALLOW_BYPASS_SMASK \ 1808 | SEND_CTXT_CHECK_ENABLE_DISALLOW_GRH_SMASK) 1809 1810 #define HFI1_PKT_KERNEL_SC_INTEGRITY \ 1811 (SEND_CTXT_CHECK_ENABLE_DISALLOW_KDETH_PACKETS_SMASK) 1812 1813 static inline u64 hfi1_pkt_default_send_ctxt_mask(struct hfi1_devdata *dd, 1814 u16 ctxt_type) 1815 { 1816 u64 base_sc_integrity; 1817 1818 /* No integrity checks if HFI1_CAP_NO_INTEGRITY is set */ 1819 if (HFI1_CAP_IS_KSET(NO_INTEGRITY)) 1820 return 0; 1821 1822 base_sc_integrity = 1823 SEND_CTXT_CHECK_ENABLE_DISALLOW_BYPASS_BAD_PKT_LEN_SMASK 1824 | SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_STATIC_RATE_CONTROL_SMASK 1825 | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_LONG_BYPASS_PACKETS_SMASK 1826 | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_LONG_IB_PACKETS_SMASK 1827 | SEND_CTXT_CHECK_ENABLE_DISALLOW_BAD_PKT_LEN_SMASK 1828 | SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_TEST_SMASK 1829 | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_SMALL_BYPASS_PACKETS_SMASK 1830 | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_SMALL_IB_PACKETS_SMASK 1831 | SEND_CTXT_CHECK_ENABLE_DISALLOW_RAW_IPV6_SMASK 1832 | SEND_CTXT_CHECK_ENABLE_DISALLOW_RAW_SMASK 1833 | SEND_CTXT_CHECK_ENABLE_CHECK_BYPASS_VL_MAPPING_SMASK 1834 | SEND_CTXT_CHECK_ENABLE_CHECK_VL_MAPPING_SMASK 1835 | SEND_CTXT_CHECK_ENABLE_CHECK_OPCODE_SMASK 1836 | SEND_CTXT_CHECK_ENABLE_CHECK_SLID_SMASK 1837 | SEND_CTXT_CHECK_ENABLE_CHECK_VL_SMASK 1838 | SEND_CTXT_CHECK_ENABLE_CHECK_ENABLE_SMASK; 1839 1840 if (ctxt_type == SC_USER) 1841 base_sc_integrity |= HFI1_PKT_USER_SC_INTEGRITY; 1842 else 1843 base_sc_integrity |= HFI1_PKT_KERNEL_SC_INTEGRITY; 1844 1845 /* turn on send-side job key checks if !A0 */ 1846 if (!is_ax(dd)) 1847 base_sc_integrity |= SEND_CTXT_CHECK_ENABLE_CHECK_JOB_KEY_SMASK; 1848 1849 return base_sc_integrity; 1850 } 1851 1852 static inline u64 hfi1_pkt_base_sdma_integrity(struct hfi1_devdata *dd) 1853 { 1854 u64 base_sdma_integrity; 1855 1856 /* No integrity checks if HFI1_CAP_NO_INTEGRITY is set */ 1857 if (HFI1_CAP_IS_KSET(NO_INTEGRITY)) 1858 return 0; 1859 1860 base_sdma_integrity = 1861 SEND_DMA_CHECK_ENABLE_DISALLOW_BYPASS_BAD_PKT_LEN_SMASK 1862 | SEND_DMA_CHECK_ENABLE_DISALLOW_TOO_LONG_BYPASS_PACKETS_SMASK 1863 | SEND_DMA_CHECK_ENABLE_DISALLOW_TOO_LONG_IB_PACKETS_SMASK 1864 | SEND_DMA_CHECK_ENABLE_DISALLOW_BAD_PKT_LEN_SMASK 1865 | SEND_DMA_CHECK_ENABLE_DISALLOW_TOO_SMALL_BYPASS_PACKETS_SMASK 1866 | SEND_DMA_CHECK_ENABLE_DISALLOW_TOO_SMALL_IB_PACKETS_SMASK 1867 | SEND_DMA_CHECK_ENABLE_DISALLOW_RAW_IPV6_SMASK 1868 | SEND_DMA_CHECK_ENABLE_DISALLOW_RAW_SMASK 1869 | SEND_DMA_CHECK_ENABLE_CHECK_BYPASS_VL_MAPPING_SMASK 1870 | SEND_DMA_CHECK_ENABLE_CHECK_VL_MAPPING_SMASK 1871 | SEND_DMA_CHECK_ENABLE_CHECK_OPCODE_SMASK 1872 | SEND_DMA_CHECK_ENABLE_CHECK_SLID_SMASK 1873 | SEND_DMA_CHECK_ENABLE_CHECK_VL_SMASK 1874 | SEND_DMA_CHECK_ENABLE_CHECK_ENABLE_SMASK; 1875 1876 if (!HFI1_CAP_IS_KSET(STATIC_RATE_CTRL)) 1877 base_sdma_integrity |= 1878 SEND_DMA_CHECK_ENABLE_DISALLOW_PBC_STATIC_RATE_CONTROL_SMASK; 1879 1880 /* turn on send-side job key checks if !A0 */ 1881 if (!is_ax(dd)) 1882 base_sdma_integrity |= 1883 SEND_DMA_CHECK_ENABLE_CHECK_JOB_KEY_SMASK; 1884 1885 return base_sdma_integrity; 1886 } 1887 1888 /* 1889 * hfi1_early_err is used (only!) to print early errors before devdata is 1890 * allocated, or when dd->pcidev may not be valid, and at the tail end of 1891 * cleanup when devdata may have been freed, etc. hfi1_dev_porterr is 1892 * the same as dd_dev_err, but is used when the message really needs 1893 * the IB port# to be definitive as to what's happening.. 1894 */ 1895 #define hfi1_early_err(dev, fmt, ...) \ 1896 dev_err(dev, fmt, ##__VA_ARGS__) 1897 1898 #define hfi1_early_info(dev, fmt, ...) \ 1899 dev_info(dev, fmt, ##__VA_ARGS__) 1900 1901 #define dd_dev_emerg(dd, fmt, ...) \ 1902 dev_emerg(&(dd)->pcidev->dev, "%s: " fmt, \ 1903 get_unit_name((dd)->unit), ##__VA_ARGS__) 1904 #define dd_dev_err(dd, fmt, ...) \ 1905 dev_err(&(dd)->pcidev->dev, "%s: " fmt, \ 1906 get_unit_name((dd)->unit), ##__VA_ARGS__) 1907 #define dd_dev_warn(dd, fmt, ...) \ 1908 dev_warn(&(dd)->pcidev->dev, "%s: " fmt, \ 1909 get_unit_name((dd)->unit), ##__VA_ARGS__) 1910 1911 #define dd_dev_warn_ratelimited(dd, fmt, ...) \ 1912 dev_warn_ratelimited(&(dd)->pcidev->dev, "%s: " fmt, \ 1913 get_unit_name((dd)->unit), ##__VA_ARGS__) 1914 1915 #define dd_dev_info(dd, fmt, ...) \ 1916 dev_info(&(dd)->pcidev->dev, "%s: " fmt, \ 1917 get_unit_name((dd)->unit), ##__VA_ARGS__) 1918 1919 #define dd_dev_dbg(dd, fmt, ...) \ 1920 dev_dbg(&(dd)->pcidev->dev, "%s: " fmt, \ 1921 get_unit_name((dd)->unit), ##__VA_ARGS__) 1922 1923 #define hfi1_dev_porterr(dd, port, fmt, ...) \ 1924 dev_err(&(dd)->pcidev->dev, "%s: port %u: " fmt, \ 1925 get_unit_name((dd)->unit), (port), ##__VA_ARGS__) 1926 1927 /* 1928 * this is used for formatting hw error messages... 1929 */ 1930 struct hfi1_hwerror_msgs { 1931 u64 mask; 1932 const char *msg; 1933 size_t sz; 1934 }; 1935 1936 /* in intr.c... */ 1937 void hfi1_format_hwerrors(u64 hwerrs, 1938 const struct hfi1_hwerror_msgs *hwerrmsgs, 1939 size_t nhwerrmsgs, char *msg, size_t lmsg); 1940 1941 #define USER_OPCODE_CHECK_VAL 0xC0 1942 #define USER_OPCODE_CHECK_MASK 0xC0 1943 #define OPCODE_CHECK_VAL_DISABLED 0x0 1944 #define OPCODE_CHECK_MASK_DISABLED 0x0 1945 1946 static inline void hfi1_reset_cpu_counters(struct hfi1_devdata *dd) 1947 { 1948 struct hfi1_pportdata *ppd; 1949 int i; 1950 1951 dd->z_int_counter = get_all_cpu_total(dd->int_counter); 1952 dd->z_rcv_limit = get_all_cpu_total(dd->rcv_limit); 1953 dd->z_send_schedule = get_all_cpu_total(dd->send_schedule); 1954 1955 ppd = (struct hfi1_pportdata *)(dd + 1); 1956 for (i = 0; i < dd->num_pports; i++, ppd++) { 1957 ppd->ibport_data.rvp.z_rc_acks = 1958 get_all_cpu_total(ppd->ibport_data.rvp.rc_acks); 1959 ppd->ibport_data.rvp.z_rc_qacks = 1960 get_all_cpu_total(ppd->ibport_data.rvp.rc_qacks); 1961 } 1962 } 1963 1964 /* Control LED state */ 1965 static inline void setextled(struct hfi1_devdata *dd, u32 on) 1966 { 1967 if (on) 1968 write_csr(dd, DCC_CFG_LED_CNTRL, 0x1F); 1969 else 1970 write_csr(dd, DCC_CFG_LED_CNTRL, 0x10); 1971 } 1972 1973 /* return the i2c resource given the target */ 1974 static inline u32 i2c_target(u32 target) 1975 { 1976 return target ? CR_I2C2 : CR_I2C1; 1977 } 1978 1979 /* return the i2c chain chip resource that this HFI uses for QSFP */ 1980 static inline u32 qsfp_resource(struct hfi1_devdata *dd) 1981 { 1982 return i2c_target(dd->hfi1_id); 1983 } 1984 1985 int hfi1_tempsense_rd(struct hfi1_devdata *dd, struct hfi1_temp *temp); 1986 1987 #define DD_DEV_ENTRY(dd) __string(dev, dev_name(&(dd)->pcidev->dev)) 1988 #define DD_DEV_ASSIGN(dd) __assign_str(dev, dev_name(&(dd)->pcidev->dev)) 1989 1990 #define packettype_name(etype) { RHF_RCV_TYPE_##etype, #etype } 1991 #define show_packettype(etype) \ 1992 __print_symbolic(etype, \ 1993 packettype_name(EXPECTED), \ 1994 packettype_name(EAGER), \ 1995 packettype_name(IB), \ 1996 packettype_name(ERROR), \ 1997 packettype_name(BYPASS)) 1998 1999 #define ib_opcode_name(opcode) { IB_OPCODE_##opcode, #opcode } 2000 #define show_ib_opcode(opcode) \ 2001 __print_symbolic(opcode, \ 2002 ib_opcode_name(RC_SEND_FIRST), \ 2003 ib_opcode_name(RC_SEND_MIDDLE), \ 2004 ib_opcode_name(RC_SEND_LAST), \ 2005 ib_opcode_name(RC_SEND_LAST_WITH_IMMEDIATE), \ 2006 ib_opcode_name(RC_SEND_ONLY), \ 2007 ib_opcode_name(RC_SEND_ONLY_WITH_IMMEDIATE), \ 2008 ib_opcode_name(RC_RDMA_WRITE_FIRST), \ 2009 ib_opcode_name(RC_RDMA_WRITE_MIDDLE), \ 2010 ib_opcode_name(RC_RDMA_WRITE_LAST), \ 2011 ib_opcode_name(RC_RDMA_WRITE_LAST_WITH_IMMEDIATE), \ 2012 ib_opcode_name(RC_RDMA_WRITE_ONLY), \ 2013 ib_opcode_name(RC_RDMA_WRITE_ONLY_WITH_IMMEDIATE), \ 2014 ib_opcode_name(RC_RDMA_READ_REQUEST), \ 2015 ib_opcode_name(RC_RDMA_READ_RESPONSE_FIRST), \ 2016 ib_opcode_name(RC_RDMA_READ_RESPONSE_MIDDLE), \ 2017 ib_opcode_name(RC_RDMA_READ_RESPONSE_LAST), \ 2018 ib_opcode_name(RC_RDMA_READ_RESPONSE_ONLY), \ 2019 ib_opcode_name(RC_ACKNOWLEDGE), \ 2020 ib_opcode_name(RC_ATOMIC_ACKNOWLEDGE), \ 2021 ib_opcode_name(RC_COMPARE_SWAP), \ 2022 ib_opcode_name(RC_FETCH_ADD), \ 2023 ib_opcode_name(UC_SEND_FIRST), \ 2024 ib_opcode_name(UC_SEND_MIDDLE), \ 2025 ib_opcode_name(UC_SEND_LAST), \ 2026 ib_opcode_name(UC_SEND_LAST_WITH_IMMEDIATE), \ 2027 ib_opcode_name(UC_SEND_ONLY), \ 2028 ib_opcode_name(UC_SEND_ONLY_WITH_IMMEDIATE), \ 2029 ib_opcode_name(UC_RDMA_WRITE_FIRST), \ 2030 ib_opcode_name(UC_RDMA_WRITE_MIDDLE), \ 2031 ib_opcode_name(UC_RDMA_WRITE_LAST), \ 2032 ib_opcode_name(UC_RDMA_WRITE_LAST_WITH_IMMEDIATE), \ 2033 ib_opcode_name(UC_RDMA_WRITE_ONLY), \ 2034 ib_opcode_name(UC_RDMA_WRITE_ONLY_WITH_IMMEDIATE), \ 2035 ib_opcode_name(UD_SEND_ONLY), \ 2036 ib_opcode_name(UD_SEND_ONLY_WITH_IMMEDIATE), \ 2037 ib_opcode_name(CNP)) 2038 #endif /* _HFI1_KERNEL_H */ 2039