1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * SuperTrak EX Series Storage Controller driver for Linux 4 * 5 * Copyright (C) 2005-2015 Promise Technology Inc. 6 * 7 * Written By: 8 * Ed Lin <promise_linux@promise.com> 9 */ 10 11 #include <linux/init.h> 12 #include <linux/errno.h> 13 #include <linux/kernel.h> 14 #include <linux/delay.h> 15 #include <linux/slab.h> 16 #include <linux/time.h> 17 #include <linux/pci.h> 18 #include <linux/blkdev.h> 19 #include <linux/interrupt.h> 20 #include <linux/types.h> 21 #include <linux/module.h> 22 #include <linux/spinlock.h> 23 #include <linux/ktime.h> 24 #include <linux/reboot.h> 25 #include <asm/io.h> 26 #include <asm/irq.h> 27 #include <asm/byteorder.h> 28 #include <scsi/scsi.h> 29 #include <scsi/scsi_device.h> 30 #include <scsi/scsi_cmnd.h> 31 #include <scsi/scsi_host.h> 32 #include <scsi/scsi_tcq.h> 33 #include <scsi/scsi_dbg.h> 34 #include <scsi/scsi_eh.h> 35 36 #define DRV_NAME "stex" 37 #define ST_DRIVER_VERSION "6.02.0000.01" 38 #define ST_VER_MAJOR 6 39 #define ST_VER_MINOR 02 40 #define ST_OEM 0000 41 #define ST_BUILD_VER 01 42 43 enum { 44 /* MU register offset */ 45 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */ 46 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */ 47 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */ 48 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */ 49 IDBL = 0x20, /* MU_INBOUND_DOORBELL */ 50 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */ 51 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */ 52 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */ 53 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */ 54 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */ 55 56 YIOA_STATUS = 0x00, 57 YH2I_INT = 0x20, 58 YINT_EN = 0x34, 59 YI2H_INT = 0x9c, 60 YI2H_INT_C = 0xa0, 61 YH2I_REQ = 0xc0, 62 YH2I_REQ_HI = 0xc4, 63 PSCRATCH0 = 0xb0, 64 PSCRATCH1 = 0xb4, 65 PSCRATCH2 = 0xb8, 66 PSCRATCH3 = 0xbc, 67 PSCRATCH4 = 0xc8, 68 MAILBOX_BASE = 0x1000, 69 MAILBOX_HNDSHK_STS = 0x0, 70 71 /* MU register value */ 72 MU_INBOUND_DOORBELL_HANDSHAKE = (1 << 0), 73 MU_INBOUND_DOORBELL_REQHEADCHANGED = (1 << 1), 74 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = (1 << 2), 75 MU_INBOUND_DOORBELL_HMUSTOPPED = (1 << 3), 76 MU_INBOUND_DOORBELL_RESET = (1 << 4), 77 78 MU_OUTBOUND_DOORBELL_HANDSHAKE = (1 << 0), 79 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = (1 << 1), 80 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = (1 << 2), 81 MU_OUTBOUND_DOORBELL_BUSCHANGE = (1 << 3), 82 MU_OUTBOUND_DOORBELL_HASEVENT = (1 << 4), 83 MU_OUTBOUND_DOORBELL_REQUEST_RESET = (1 << 27), 84 85 /* MU status code */ 86 MU_STATE_STARTING = 1, 87 MU_STATE_STARTED = 2, 88 MU_STATE_RESETTING = 3, 89 MU_STATE_FAILED = 4, 90 MU_STATE_STOP = 5, 91 MU_STATE_NOCONNECT = 6, 92 93 MU_MAX_DELAY = 50, 94 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55, 95 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000, 96 MU_HARD_RESET_WAIT = 30000, 97 HMU_PARTNER_TYPE = 2, 98 99 /* firmware returned values */ 100 SRB_STATUS_SUCCESS = 0x01, 101 SRB_STATUS_ERROR = 0x04, 102 SRB_STATUS_BUSY = 0x05, 103 SRB_STATUS_INVALID_REQUEST = 0x06, 104 SRB_STATUS_SELECTION_TIMEOUT = 0x0A, 105 SRB_SEE_SENSE = 0x80, 106 107 /* task attribute */ 108 TASK_ATTRIBUTE_SIMPLE = 0x0, 109 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1, 110 TASK_ATTRIBUTE_ORDERED = 0x2, 111 TASK_ATTRIBUTE_ACA = 0x4, 112 113 SS_STS_NORMAL = 0x80000000, 114 SS_STS_DONE = 0x40000000, 115 SS_STS_HANDSHAKE = 0x20000000, 116 117 SS_HEAD_HANDSHAKE = 0x80, 118 119 SS_H2I_INT_RESET = 0x100, 120 121 SS_I2H_REQUEST_RESET = 0x2000, 122 123 SS_MU_OPERATIONAL = 0x80000000, 124 125 STEX_CDB_LENGTH = 16, 126 STATUS_VAR_LEN = 128, 127 128 /* sg flags */ 129 SG_CF_EOT = 0x80, /* end of table */ 130 SG_CF_64B = 0x40, /* 64 bit item */ 131 SG_CF_HOST = 0x20, /* sg in host memory */ 132 MSG_DATA_DIR_ND = 0, 133 MSG_DATA_DIR_IN = 1, 134 MSG_DATA_DIR_OUT = 2, 135 136 st_shasta = 0, 137 st_vsc = 1, 138 st_yosemite = 2, 139 st_seq = 3, 140 st_yel = 4, 141 st_P3 = 5, 142 143 PASSTHRU_REQ_TYPE = 0x00000001, 144 PASSTHRU_REQ_NO_WAKEUP = 0x00000100, 145 ST_INTERNAL_TIMEOUT = 180, 146 147 ST_TO_CMD = 0, 148 ST_FROM_CMD = 1, 149 150 /* vendor specific commands of Promise */ 151 MGT_CMD = 0xd8, 152 SINBAND_MGT_CMD = 0xd9, 153 ARRAY_CMD = 0xe0, 154 CONTROLLER_CMD = 0xe1, 155 DEBUGGING_CMD = 0xe2, 156 PASSTHRU_CMD = 0xe3, 157 158 PASSTHRU_GET_ADAPTER = 0x05, 159 PASSTHRU_GET_DRVVER = 0x10, 160 161 CTLR_CONFIG_CMD = 0x03, 162 CTLR_SHUTDOWN = 0x0d, 163 164 CTLR_POWER_STATE_CHANGE = 0x0e, 165 CTLR_POWER_SAVING = 0x01, 166 167 PASSTHRU_SIGNATURE = 0x4e415041, 168 MGT_CMD_SIGNATURE = 0xba, 169 170 INQUIRY_EVPD = 0x01, 171 172 ST_ADDITIONAL_MEM = 0x200000, 173 ST_ADDITIONAL_MEM_MIN = 0x80000, 174 PMIC_SHUTDOWN = 0x0D, 175 PMIC_REUMSE = 0x10, 176 ST_IGNORED = -1, 177 ST_NOTHANDLED = 7, 178 ST_S3 = 3, 179 ST_S4 = 4, 180 ST_S5 = 5, 181 ST_S6 = 6, 182 }; 183 184 struct st_sgitem { 185 u8 ctrl; /* SG_CF_xxx */ 186 u8 reserved[3]; 187 __le32 count; 188 __le64 addr; 189 }; 190 191 struct st_ss_sgitem { 192 __le32 addr; 193 __le32 addr_hi; 194 __le32 count; 195 }; 196 197 struct st_sgtable { 198 __le16 sg_count; 199 __le16 max_sg_count; 200 __le32 sz_in_byte; 201 }; 202 203 struct st_msg_header { 204 __le64 handle; 205 u8 flag; 206 u8 channel; 207 __le16 timeout; 208 u32 reserved; 209 }; 210 211 struct handshake_frame { 212 __le64 rb_phy; /* request payload queue physical address */ 213 __le16 req_sz; /* size of each request payload */ 214 __le16 req_cnt; /* count of reqs the buffer can hold */ 215 __le16 status_sz; /* size of each status payload */ 216 __le16 status_cnt; /* count of status the buffer can hold */ 217 __le64 hosttime; /* seconds from Jan 1, 1970 (GMT) */ 218 u8 partner_type; /* who sends this frame */ 219 u8 reserved0[7]; 220 __le32 partner_ver_major; 221 __le32 partner_ver_minor; 222 __le32 partner_ver_oem; 223 __le32 partner_ver_build; 224 __le32 extra_offset; /* NEW */ 225 __le32 extra_size; /* NEW */ 226 __le32 scratch_size; 227 u32 reserved1; 228 }; 229 230 struct req_msg { 231 __le16 tag; 232 u8 lun; 233 u8 target; 234 u8 task_attr; 235 u8 task_manage; 236 u8 data_dir; 237 u8 payload_sz; /* payload size in 4-byte, not used */ 238 u8 cdb[STEX_CDB_LENGTH]; 239 u32 variable[]; 240 }; 241 242 struct status_msg { 243 __le16 tag; 244 u8 lun; 245 u8 target; 246 u8 srb_status; 247 u8 scsi_status; 248 u8 reserved; 249 u8 payload_sz; /* payload size in 4-byte */ 250 u8 variable[STATUS_VAR_LEN]; 251 }; 252 253 struct ver_info { 254 u32 major; 255 u32 minor; 256 u32 oem; 257 u32 build; 258 u32 reserved[2]; 259 }; 260 261 struct st_frame { 262 u32 base[6]; 263 u32 rom_addr; 264 265 struct ver_info drv_ver; 266 struct ver_info bios_ver; 267 268 u32 bus; 269 u32 slot; 270 u32 irq_level; 271 u32 irq_vec; 272 u32 id; 273 u32 subid; 274 275 u32 dimm_size; 276 u8 dimm_type; 277 u8 reserved[3]; 278 279 u32 channel; 280 u32 reserved1; 281 }; 282 283 struct st_drvver { 284 u32 major; 285 u32 minor; 286 u32 oem; 287 u32 build; 288 u32 signature[2]; 289 u8 console_id; 290 u8 host_no; 291 u8 reserved0[2]; 292 u32 reserved[3]; 293 }; 294 295 struct st_ccb { 296 struct req_msg *req; 297 struct scsi_cmnd *cmd; 298 299 void *sense_buffer; 300 unsigned int sense_bufflen; 301 int sg_count; 302 303 u32 req_type; 304 u8 srb_status; 305 u8 scsi_status; 306 u8 reserved[2]; 307 }; 308 309 struct st_hba { 310 void __iomem *mmio_base; /* iomapped PCI memory space */ 311 void *dma_mem; 312 dma_addr_t dma_handle; 313 size_t dma_size; 314 315 struct Scsi_Host *host; 316 struct pci_dev *pdev; 317 318 struct req_msg * (*alloc_rq) (struct st_hba *); 319 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *); 320 void (*send) (struct st_hba *, struct req_msg *, u16); 321 322 u32 req_head; 323 u32 req_tail; 324 u32 status_head; 325 u32 status_tail; 326 327 struct status_msg *status_buffer; 328 void *copy_buffer; /* temp buffer for driver-handled commands */ 329 struct st_ccb *ccb; 330 struct st_ccb *wait_ccb; 331 __le32 *scratch; 332 333 char work_q_name[20]; 334 struct workqueue_struct *work_q; 335 struct work_struct reset_work; 336 wait_queue_head_t reset_waitq; 337 unsigned int mu_status; 338 unsigned int cardtype; 339 int msi_enabled; 340 int out_req_cnt; 341 u32 extra_offset; 342 u16 rq_count; 343 u16 rq_size; 344 u16 sts_count; 345 u8 supports_pm; 346 int msi_lock; 347 }; 348 349 struct st_card_info { 350 struct req_msg * (*alloc_rq) (struct st_hba *); 351 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *); 352 void (*send) (struct st_hba *, struct req_msg *, u16); 353 unsigned int max_id; 354 unsigned int max_lun; 355 unsigned int max_channel; 356 u16 rq_count; 357 u16 rq_size; 358 u16 sts_count; 359 }; 360 361 static int S6flag; 362 static int stex_halt(struct notifier_block *nb, ulong event, void *buf); 363 static struct notifier_block stex_notifier = { 364 stex_halt, NULL, 0 365 }; 366 367 static int msi; 368 module_param(msi, int, 0); 369 MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)"); 370 371 static const char console_inq_page[] = 372 { 373 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30, 374 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */ 375 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */ 376 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */ 377 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */ 378 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */ 379 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */ 380 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20 381 }; 382 383 MODULE_AUTHOR("Ed Lin"); 384 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers"); 385 MODULE_LICENSE("GPL"); 386 MODULE_VERSION(ST_DRIVER_VERSION); 387 388 static struct status_msg *stex_get_status(struct st_hba *hba) 389 { 390 struct status_msg *status = hba->status_buffer + hba->status_tail; 391 392 ++hba->status_tail; 393 hba->status_tail %= hba->sts_count+1; 394 395 return status; 396 } 397 398 static void stex_invalid_field(struct scsi_cmnd *cmd, 399 void (*done)(struct scsi_cmnd *)) 400 { 401 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; 402 403 /* "Invalid field in cdb" */ 404 scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24, 405 0x0); 406 done(cmd); 407 } 408 409 static struct req_msg *stex_alloc_req(struct st_hba *hba) 410 { 411 struct req_msg *req = hba->dma_mem + hba->req_head * hba->rq_size; 412 413 ++hba->req_head; 414 hba->req_head %= hba->rq_count+1; 415 416 return req; 417 } 418 419 static struct req_msg *stex_ss_alloc_req(struct st_hba *hba) 420 { 421 return (struct req_msg *)(hba->dma_mem + 422 hba->req_head * hba->rq_size + sizeof(struct st_msg_header)); 423 } 424 425 static int stex_map_sg(struct st_hba *hba, 426 struct req_msg *req, struct st_ccb *ccb) 427 { 428 struct scsi_cmnd *cmd; 429 struct scatterlist *sg; 430 struct st_sgtable *dst; 431 struct st_sgitem *table; 432 int i, nseg; 433 434 cmd = ccb->cmd; 435 nseg = scsi_dma_map(cmd); 436 BUG_ON(nseg < 0); 437 if (nseg) { 438 dst = (struct st_sgtable *)req->variable; 439 440 ccb->sg_count = nseg; 441 dst->sg_count = cpu_to_le16((u16)nseg); 442 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize); 443 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd)); 444 445 table = (struct st_sgitem *)(dst + 1); 446 scsi_for_each_sg(cmd, sg, nseg, i) { 447 table[i].count = cpu_to_le32((u32)sg_dma_len(sg)); 448 table[i].addr = cpu_to_le64(sg_dma_address(sg)); 449 table[i].ctrl = SG_CF_64B | SG_CF_HOST; 450 } 451 table[--i].ctrl |= SG_CF_EOT; 452 } 453 454 return nseg; 455 } 456 457 static int stex_ss_map_sg(struct st_hba *hba, 458 struct req_msg *req, struct st_ccb *ccb) 459 { 460 struct scsi_cmnd *cmd; 461 struct scatterlist *sg; 462 struct st_sgtable *dst; 463 struct st_ss_sgitem *table; 464 int i, nseg; 465 466 cmd = ccb->cmd; 467 nseg = scsi_dma_map(cmd); 468 BUG_ON(nseg < 0); 469 if (nseg) { 470 dst = (struct st_sgtable *)req->variable; 471 472 ccb->sg_count = nseg; 473 dst->sg_count = cpu_to_le16((u16)nseg); 474 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize); 475 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd)); 476 477 table = (struct st_ss_sgitem *)(dst + 1); 478 scsi_for_each_sg(cmd, sg, nseg, i) { 479 table[i].count = cpu_to_le32((u32)sg_dma_len(sg)); 480 table[i].addr = 481 cpu_to_le32(sg_dma_address(sg) & 0xffffffff); 482 table[i].addr_hi = 483 cpu_to_le32((sg_dma_address(sg) >> 16) >> 16); 484 } 485 } 486 487 return nseg; 488 } 489 490 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb) 491 { 492 struct st_frame *p; 493 size_t count = sizeof(struct st_frame); 494 495 p = hba->copy_buffer; 496 scsi_sg_copy_to_buffer(ccb->cmd, p, count); 497 memset(p->base, 0, sizeof(u32)*6); 498 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0); 499 p->rom_addr = 0; 500 501 p->drv_ver.major = ST_VER_MAJOR; 502 p->drv_ver.minor = ST_VER_MINOR; 503 p->drv_ver.oem = ST_OEM; 504 p->drv_ver.build = ST_BUILD_VER; 505 506 p->bus = hba->pdev->bus->number; 507 p->slot = hba->pdev->devfn; 508 p->irq_level = 0; 509 p->irq_vec = hba->pdev->irq; 510 p->id = hba->pdev->vendor << 16 | hba->pdev->device; 511 p->subid = 512 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device; 513 514 scsi_sg_copy_from_buffer(ccb->cmd, p, count); 515 } 516 517 static void 518 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag) 519 { 520 req->tag = cpu_to_le16(tag); 521 522 hba->ccb[tag].req = req; 523 hba->out_req_cnt++; 524 525 writel(hba->req_head, hba->mmio_base + IMR0); 526 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL); 527 readl(hba->mmio_base + IDBL); /* flush */ 528 } 529 530 static void 531 stex_ss_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag) 532 { 533 struct scsi_cmnd *cmd; 534 struct st_msg_header *msg_h; 535 dma_addr_t addr; 536 537 req->tag = cpu_to_le16(tag); 538 539 hba->ccb[tag].req = req; 540 hba->out_req_cnt++; 541 542 cmd = hba->ccb[tag].cmd; 543 msg_h = (struct st_msg_header *)req - 1; 544 if (likely(cmd)) { 545 msg_h->channel = (u8)cmd->device->channel; 546 msg_h->timeout = cpu_to_le16(cmd->request->timeout/HZ); 547 } 548 addr = hba->dma_handle + hba->req_head * hba->rq_size; 549 addr += (hba->ccb[tag].sg_count+4)/11; 550 msg_h->handle = cpu_to_le64(addr); 551 552 ++hba->req_head; 553 hba->req_head %= hba->rq_count+1; 554 if (hba->cardtype == st_P3) { 555 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI); 556 writel(addr, hba->mmio_base + YH2I_REQ); 557 } else { 558 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI); 559 readl(hba->mmio_base + YH2I_REQ_HI); /* flush */ 560 writel(addr, hba->mmio_base + YH2I_REQ); 561 readl(hba->mmio_base + YH2I_REQ); /* flush */ 562 } 563 } 564 565 static void return_abnormal_state(struct st_hba *hba, int status) 566 { 567 struct st_ccb *ccb; 568 unsigned long flags; 569 u16 tag; 570 571 spin_lock_irqsave(hba->host->host_lock, flags); 572 for (tag = 0; tag < hba->host->can_queue; tag++) { 573 ccb = &hba->ccb[tag]; 574 if (ccb->req == NULL) 575 continue; 576 ccb->req = NULL; 577 if (ccb->cmd) { 578 scsi_dma_unmap(ccb->cmd); 579 ccb->cmd->result = status << 16; 580 ccb->cmd->scsi_done(ccb->cmd); 581 ccb->cmd = NULL; 582 } 583 } 584 spin_unlock_irqrestore(hba->host->host_lock, flags); 585 } 586 static int 587 stex_slave_config(struct scsi_device *sdev) 588 { 589 sdev->use_10_for_rw = 1; 590 sdev->use_10_for_ms = 1; 591 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); 592 593 return 0; 594 } 595 596 static int 597 stex_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) 598 { 599 struct st_hba *hba; 600 struct Scsi_Host *host; 601 unsigned int id, lun; 602 struct req_msg *req; 603 u16 tag; 604 605 host = cmd->device->host; 606 id = cmd->device->id; 607 lun = cmd->device->lun; 608 hba = (struct st_hba *) &host->hostdata[0]; 609 if (hba->mu_status == MU_STATE_NOCONNECT) { 610 cmd->result = DID_NO_CONNECT; 611 done(cmd); 612 return 0; 613 } 614 if (unlikely(hba->mu_status != MU_STATE_STARTED)) 615 return SCSI_MLQUEUE_HOST_BUSY; 616 617 switch (cmd->cmnd[0]) { 618 case MODE_SENSE_10: 619 { 620 static char ms10_caching_page[12] = 621 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 }; 622 unsigned char page; 623 624 page = cmd->cmnd[2] & 0x3f; 625 if (page == 0x8 || page == 0x3f) { 626 scsi_sg_copy_from_buffer(cmd, ms10_caching_page, 627 sizeof(ms10_caching_page)); 628 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; 629 done(cmd); 630 } else 631 stex_invalid_field(cmd, done); 632 return 0; 633 } 634 case REPORT_LUNS: 635 /* 636 * The shasta firmware does not report actual luns in the 637 * target, so fail the command to force sequential lun scan. 638 * Also, the console device does not support this command. 639 */ 640 if (hba->cardtype == st_shasta || id == host->max_id - 1) { 641 stex_invalid_field(cmd, done); 642 return 0; 643 } 644 break; 645 case TEST_UNIT_READY: 646 if (id == host->max_id - 1) { 647 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; 648 done(cmd); 649 return 0; 650 } 651 break; 652 case INQUIRY: 653 if (lun >= host->max_lun) { 654 cmd->result = DID_NO_CONNECT << 16; 655 done(cmd); 656 return 0; 657 } 658 if (id != host->max_id - 1) 659 break; 660 if (!lun && !cmd->device->channel && 661 (cmd->cmnd[1] & INQUIRY_EVPD) == 0) { 662 scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page, 663 sizeof(console_inq_page)); 664 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; 665 done(cmd); 666 } else 667 stex_invalid_field(cmd, done); 668 return 0; 669 case PASSTHRU_CMD: 670 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) { 671 struct st_drvver ver; 672 size_t cp_len = sizeof(ver); 673 674 ver.major = ST_VER_MAJOR; 675 ver.minor = ST_VER_MINOR; 676 ver.oem = ST_OEM; 677 ver.build = ST_BUILD_VER; 678 ver.signature[0] = PASSTHRU_SIGNATURE; 679 ver.console_id = host->max_id - 1; 680 ver.host_no = hba->host->host_no; 681 cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len); 682 cmd->result = sizeof(ver) == cp_len ? 683 DID_OK << 16 | COMMAND_COMPLETE << 8 : 684 DID_ERROR << 16 | COMMAND_COMPLETE << 8; 685 done(cmd); 686 return 0; 687 } 688 break; 689 default: 690 break; 691 } 692 693 cmd->scsi_done = done; 694 695 tag = cmd->request->tag; 696 697 if (unlikely(tag >= host->can_queue)) 698 return SCSI_MLQUEUE_HOST_BUSY; 699 700 req = hba->alloc_rq(hba); 701 702 req->lun = lun; 703 req->target = id; 704 705 /* cdb */ 706 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH); 707 708 if (cmd->sc_data_direction == DMA_FROM_DEVICE) 709 req->data_dir = MSG_DATA_DIR_IN; 710 else if (cmd->sc_data_direction == DMA_TO_DEVICE) 711 req->data_dir = MSG_DATA_DIR_OUT; 712 else 713 req->data_dir = MSG_DATA_DIR_ND; 714 715 hba->ccb[tag].cmd = cmd; 716 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE; 717 hba->ccb[tag].sense_buffer = cmd->sense_buffer; 718 719 if (!hba->map_sg(hba, req, &hba->ccb[tag])) { 720 hba->ccb[tag].sg_count = 0; 721 memset(&req->variable[0], 0, 8); 722 } 723 724 hba->send(hba, req, tag); 725 return 0; 726 } 727 728 static DEF_SCSI_QCMD(stex_queuecommand) 729 730 static void stex_scsi_done(struct st_ccb *ccb) 731 { 732 struct scsi_cmnd *cmd = ccb->cmd; 733 int result; 734 735 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) { 736 result = ccb->scsi_status; 737 switch (ccb->scsi_status) { 738 case SAM_STAT_GOOD: 739 result |= DID_OK << 16 | COMMAND_COMPLETE << 8; 740 break; 741 case SAM_STAT_CHECK_CONDITION: 742 result |= DRIVER_SENSE << 24; 743 break; 744 case SAM_STAT_BUSY: 745 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8; 746 break; 747 default: 748 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8; 749 break; 750 } 751 } 752 else if (ccb->srb_status & SRB_SEE_SENSE) 753 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION; 754 else switch (ccb->srb_status) { 755 case SRB_STATUS_SELECTION_TIMEOUT: 756 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8; 757 break; 758 case SRB_STATUS_BUSY: 759 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8; 760 break; 761 case SRB_STATUS_INVALID_REQUEST: 762 case SRB_STATUS_ERROR: 763 default: 764 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8; 765 break; 766 } 767 768 cmd->result = result; 769 cmd->scsi_done(cmd); 770 } 771 772 static void stex_copy_data(struct st_ccb *ccb, 773 struct status_msg *resp, unsigned int variable) 774 { 775 if (resp->scsi_status != SAM_STAT_GOOD) { 776 if (ccb->sense_buffer != NULL) 777 memcpy(ccb->sense_buffer, resp->variable, 778 min(variable, ccb->sense_bufflen)); 779 return; 780 } 781 782 if (ccb->cmd == NULL) 783 return; 784 scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, variable); 785 } 786 787 static void stex_check_cmd(struct st_hba *hba, 788 struct st_ccb *ccb, struct status_msg *resp) 789 { 790 if (ccb->cmd->cmnd[0] == MGT_CMD && 791 resp->scsi_status != SAM_STAT_CHECK_CONDITION) 792 scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) - 793 le32_to_cpu(*(__le32 *)&resp->variable[0])); 794 } 795 796 static void stex_mu_intr(struct st_hba *hba, u32 doorbell) 797 { 798 void __iomem *base = hba->mmio_base; 799 struct status_msg *resp; 800 struct st_ccb *ccb; 801 unsigned int size; 802 u16 tag; 803 804 if (unlikely(!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED))) 805 return; 806 807 /* status payloads */ 808 hba->status_head = readl(base + OMR1); 809 if (unlikely(hba->status_head > hba->sts_count)) { 810 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n", 811 pci_name(hba->pdev)); 812 return; 813 } 814 815 /* 816 * it's not a valid status payload if: 817 * 1. there are no pending requests(e.g. during init stage) 818 * 2. there are some pending requests, but the controller is in 819 * reset status, and its type is not st_yosemite 820 * firmware of st_yosemite in reset status will return pending requests 821 * to driver, so we allow it to pass 822 */ 823 if (unlikely(hba->out_req_cnt <= 0 || 824 (hba->mu_status == MU_STATE_RESETTING && 825 hba->cardtype != st_yosemite))) { 826 hba->status_tail = hba->status_head; 827 goto update_status; 828 } 829 830 while (hba->status_tail != hba->status_head) { 831 resp = stex_get_status(hba); 832 tag = le16_to_cpu(resp->tag); 833 if (unlikely(tag >= hba->host->can_queue)) { 834 printk(KERN_WARNING DRV_NAME 835 "(%s): invalid tag\n", pci_name(hba->pdev)); 836 continue; 837 } 838 839 hba->out_req_cnt--; 840 ccb = &hba->ccb[tag]; 841 if (unlikely(hba->wait_ccb == ccb)) 842 hba->wait_ccb = NULL; 843 if (unlikely(ccb->req == NULL)) { 844 printk(KERN_WARNING DRV_NAME 845 "(%s): lagging req\n", pci_name(hba->pdev)); 846 continue; 847 } 848 849 size = resp->payload_sz * sizeof(u32); /* payload size */ 850 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN || 851 size > sizeof(*resp))) { 852 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n", 853 pci_name(hba->pdev)); 854 } else { 855 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */ 856 if (size) 857 stex_copy_data(ccb, resp, size); 858 } 859 860 ccb->req = NULL; 861 ccb->srb_status = resp->srb_status; 862 ccb->scsi_status = resp->scsi_status; 863 864 if (likely(ccb->cmd != NULL)) { 865 if (hba->cardtype == st_yosemite) 866 stex_check_cmd(hba, ccb, resp); 867 868 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD && 869 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER)) 870 stex_controller_info(hba, ccb); 871 872 scsi_dma_unmap(ccb->cmd); 873 stex_scsi_done(ccb); 874 } else 875 ccb->req_type = 0; 876 } 877 878 update_status: 879 writel(hba->status_head, base + IMR1); 880 readl(base + IMR1); /* flush */ 881 } 882 883 static irqreturn_t stex_intr(int irq, void *__hba) 884 { 885 struct st_hba *hba = __hba; 886 void __iomem *base = hba->mmio_base; 887 u32 data; 888 unsigned long flags; 889 890 spin_lock_irqsave(hba->host->host_lock, flags); 891 892 data = readl(base + ODBL); 893 894 if (data && data != 0xffffffff) { 895 /* clear the interrupt */ 896 writel(data, base + ODBL); 897 readl(base + ODBL); /* flush */ 898 stex_mu_intr(hba, data); 899 spin_unlock_irqrestore(hba->host->host_lock, flags); 900 if (unlikely(data & MU_OUTBOUND_DOORBELL_REQUEST_RESET && 901 hba->cardtype == st_shasta)) 902 queue_work(hba->work_q, &hba->reset_work); 903 return IRQ_HANDLED; 904 } 905 906 spin_unlock_irqrestore(hba->host->host_lock, flags); 907 908 return IRQ_NONE; 909 } 910 911 static void stex_ss_mu_intr(struct st_hba *hba) 912 { 913 struct status_msg *resp; 914 struct st_ccb *ccb; 915 __le32 *scratch; 916 unsigned int size; 917 int count = 0; 918 u32 value; 919 u16 tag; 920 921 if (unlikely(hba->out_req_cnt <= 0 || 922 hba->mu_status == MU_STATE_RESETTING)) 923 return; 924 925 while (count < hba->sts_count) { 926 scratch = hba->scratch + hba->status_tail; 927 value = le32_to_cpu(*scratch); 928 if (unlikely(!(value & SS_STS_NORMAL))) 929 return; 930 931 resp = hba->status_buffer + hba->status_tail; 932 *scratch = 0; 933 ++count; 934 ++hba->status_tail; 935 hba->status_tail %= hba->sts_count+1; 936 937 tag = (u16)value; 938 if (unlikely(tag >= hba->host->can_queue)) { 939 printk(KERN_WARNING DRV_NAME 940 "(%s): invalid tag\n", pci_name(hba->pdev)); 941 continue; 942 } 943 944 hba->out_req_cnt--; 945 ccb = &hba->ccb[tag]; 946 if (unlikely(hba->wait_ccb == ccb)) 947 hba->wait_ccb = NULL; 948 if (unlikely(ccb->req == NULL)) { 949 printk(KERN_WARNING DRV_NAME 950 "(%s): lagging req\n", pci_name(hba->pdev)); 951 continue; 952 } 953 954 ccb->req = NULL; 955 if (likely(value & SS_STS_DONE)) { /* normal case */ 956 ccb->srb_status = SRB_STATUS_SUCCESS; 957 ccb->scsi_status = SAM_STAT_GOOD; 958 } else { 959 ccb->srb_status = resp->srb_status; 960 ccb->scsi_status = resp->scsi_status; 961 size = resp->payload_sz * sizeof(u32); 962 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN || 963 size > sizeof(*resp))) { 964 printk(KERN_WARNING DRV_NAME 965 "(%s): bad status size\n", 966 pci_name(hba->pdev)); 967 } else { 968 size -= sizeof(*resp) - STATUS_VAR_LEN; 969 if (size) 970 stex_copy_data(ccb, resp, size); 971 } 972 if (likely(ccb->cmd != NULL)) 973 stex_check_cmd(hba, ccb, resp); 974 } 975 976 if (likely(ccb->cmd != NULL)) { 977 scsi_dma_unmap(ccb->cmd); 978 stex_scsi_done(ccb); 979 } else 980 ccb->req_type = 0; 981 } 982 } 983 984 static irqreturn_t stex_ss_intr(int irq, void *__hba) 985 { 986 struct st_hba *hba = __hba; 987 void __iomem *base = hba->mmio_base; 988 u32 data; 989 unsigned long flags; 990 991 spin_lock_irqsave(hba->host->host_lock, flags); 992 993 if (hba->cardtype == st_yel) { 994 data = readl(base + YI2H_INT); 995 if (data && data != 0xffffffff) { 996 /* clear the interrupt */ 997 writel(data, base + YI2H_INT_C); 998 stex_ss_mu_intr(hba); 999 spin_unlock_irqrestore(hba->host->host_lock, flags); 1000 if (unlikely(data & SS_I2H_REQUEST_RESET)) 1001 queue_work(hba->work_q, &hba->reset_work); 1002 return IRQ_HANDLED; 1003 } 1004 } else { 1005 data = readl(base + PSCRATCH4); 1006 if (data != 0xffffffff) { 1007 if (data != 0) { 1008 /* clear the interrupt */ 1009 writel(data, base + PSCRATCH1); 1010 writel((1 << 22), base + YH2I_INT); 1011 } 1012 stex_ss_mu_intr(hba); 1013 spin_unlock_irqrestore(hba->host->host_lock, flags); 1014 if (unlikely(data & SS_I2H_REQUEST_RESET)) 1015 queue_work(hba->work_q, &hba->reset_work); 1016 return IRQ_HANDLED; 1017 } 1018 } 1019 1020 spin_unlock_irqrestore(hba->host->host_lock, flags); 1021 1022 return IRQ_NONE; 1023 } 1024 1025 static int stex_common_handshake(struct st_hba *hba) 1026 { 1027 void __iomem *base = hba->mmio_base; 1028 struct handshake_frame *h; 1029 dma_addr_t status_phys; 1030 u32 data; 1031 unsigned long before; 1032 1033 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { 1034 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL); 1035 readl(base + IDBL); 1036 before = jiffies; 1037 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { 1038 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 1039 printk(KERN_ERR DRV_NAME 1040 "(%s): no handshake signature\n", 1041 pci_name(hba->pdev)); 1042 return -1; 1043 } 1044 rmb(); 1045 msleep(1); 1046 } 1047 } 1048 1049 udelay(10); 1050 1051 data = readl(base + OMR1); 1052 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) { 1053 data &= 0x0000ffff; 1054 if (hba->host->can_queue > data) { 1055 hba->host->can_queue = data; 1056 hba->host->cmd_per_lun = data; 1057 } 1058 } 1059 1060 h = (struct handshake_frame *)hba->status_buffer; 1061 h->rb_phy = cpu_to_le64(hba->dma_handle); 1062 h->req_sz = cpu_to_le16(hba->rq_size); 1063 h->req_cnt = cpu_to_le16(hba->rq_count+1); 1064 h->status_sz = cpu_to_le16(sizeof(struct status_msg)); 1065 h->status_cnt = cpu_to_le16(hba->sts_count+1); 1066 h->hosttime = cpu_to_le64(ktime_get_real_seconds()); 1067 h->partner_type = HMU_PARTNER_TYPE; 1068 if (hba->extra_offset) { 1069 h->extra_offset = cpu_to_le32(hba->extra_offset); 1070 h->extra_size = cpu_to_le32(hba->dma_size - hba->extra_offset); 1071 } else 1072 h->extra_offset = h->extra_size = 0; 1073 1074 status_phys = hba->dma_handle + (hba->rq_count+1) * hba->rq_size; 1075 writel(status_phys, base + IMR0); 1076 readl(base + IMR0); 1077 writel((status_phys >> 16) >> 16, base + IMR1); 1078 readl(base + IMR1); 1079 1080 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */ 1081 readl(base + OMR0); 1082 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL); 1083 readl(base + IDBL); /* flush */ 1084 1085 udelay(10); 1086 before = jiffies; 1087 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { 1088 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 1089 printk(KERN_ERR DRV_NAME 1090 "(%s): no signature after handshake frame\n", 1091 pci_name(hba->pdev)); 1092 return -1; 1093 } 1094 rmb(); 1095 msleep(1); 1096 } 1097 1098 writel(0, base + IMR0); 1099 readl(base + IMR0); 1100 writel(0, base + OMR0); 1101 readl(base + OMR0); 1102 writel(0, base + IMR1); 1103 readl(base + IMR1); 1104 writel(0, base + OMR1); 1105 readl(base + OMR1); /* flush */ 1106 return 0; 1107 } 1108 1109 static int stex_ss_handshake(struct st_hba *hba) 1110 { 1111 void __iomem *base = hba->mmio_base; 1112 struct st_msg_header *msg_h; 1113 struct handshake_frame *h; 1114 __le32 *scratch; 1115 u32 data, scratch_size, mailboxdata, operationaldata; 1116 unsigned long before; 1117 int ret = 0; 1118 1119 before = jiffies; 1120 1121 if (hba->cardtype == st_yel) { 1122 operationaldata = readl(base + YIOA_STATUS); 1123 while (operationaldata != SS_MU_OPERATIONAL) { 1124 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 1125 printk(KERN_ERR DRV_NAME 1126 "(%s): firmware not operational\n", 1127 pci_name(hba->pdev)); 1128 return -1; 1129 } 1130 msleep(1); 1131 operationaldata = readl(base + YIOA_STATUS); 1132 } 1133 } else { 1134 operationaldata = readl(base + PSCRATCH3); 1135 while (operationaldata != SS_MU_OPERATIONAL) { 1136 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 1137 printk(KERN_ERR DRV_NAME 1138 "(%s): firmware not operational\n", 1139 pci_name(hba->pdev)); 1140 return -1; 1141 } 1142 msleep(1); 1143 operationaldata = readl(base + PSCRATCH3); 1144 } 1145 } 1146 1147 msg_h = (struct st_msg_header *)hba->dma_mem; 1148 msg_h->handle = cpu_to_le64(hba->dma_handle); 1149 msg_h->flag = SS_HEAD_HANDSHAKE; 1150 1151 h = (struct handshake_frame *)(msg_h + 1); 1152 h->rb_phy = cpu_to_le64(hba->dma_handle); 1153 h->req_sz = cpu_to_le16(hba->rq_size); 1154 h->req_cnt = cpu_to_le16(hba->rq_count+1); 1155 h->status_sz = cpu_to_le16(sizeof(struct status_msg)); 1156 h->status_cnt = cpu_to_le16(hba->sts_count+1); 1157 h->hosttime = cpu_to_le64(ktime_get_real_seconds()); 1158 h->partner_type = HMU_PARTNER_TYPE; 1159 h->extra_offset = h->extra_size = 0; 1160 scratch_size = (hba->sts_count+1)*sizeof(u32); 1161 h->scratch_size = cpu_to_le32(scratch_size); 1162 1163 if (hba->cardtype == st_yel) { 1164 data = readl(base + YINT_EN); 1165 data &= ~4; 1166 writel(data, base + YINT_EN); 1167 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI); 1168 readl(base + YH2I_REQ_HI); 1169 writel(hba->dma_handle, base + YH2I_REQ); 1170 readl(base + YH2I_REQ); /* flush */ 1171 } else { 1172 data = readl(base + YINT_EN); 1173 data &= ~(1 << 0); 1174 data &= ~(1 << 2); 1175 writel(data, base + YINT_EN); 1176 if (hba->msi_lock == 0) { 1177 /* P3 MSI Register cannot access twice */ 1178 writel((1 << 6), base + YH2I_INT); 1179 hba->msi_lock = 1; 1180 } 1181 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI); 1182 writel(hba->dma_handle, base + YH2I_REQ); 1183 } 1184 1185 before = jiffies; 1186 scratch = hba->scratch; 1187 if (hba->cardtype == st_yel) { 1188 while (!(le32_to_cpu(*scratch) & SS_STS_HANDSHAKE)) { 1189 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 1190 printk(KERN_ERR DRV_NAME 1191 "(%s): no signature after handshake frame\n", 1192 pci_name(hba->pdev)); 1193 ret = -1; 1194 break; 1195 } 1196 rmb(); 1197 msleep(1); 1198 } 1199 } else { 1200 mailboxdata = readl(base + MAILBOX_BASE + MAILBOX_HNDSHK_STS); 1201 while (mailboxdata != SS_STS_HANDSHAKE) { 1202 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 1203 printk(KERN_ERR DRV_NAME 1204 "(%s): no signature after handshake frame\n", 1205 pci_name(hba->pdev)); 1206 ret = -1; 1207 break; 1208 } 1209 rmb(); 1210 msleep(1); 1211 mailboxdata = readl(base + MAILBOX_BASE + MAILBOX_HNDSHK_STS); 1212 } 1213 } 1214 memset(scratch, 0, scratch_size); 1215 msg_h->flag = 0; 1216 1217 return ret; 1218 } 1219 1220 static int stex_handshake(struct st_hba *hba) 1221 { 1222 int err; 1223 unsigned long flags; 1224 unsigned int mu_status; 1225 1226 if (hba->cardtype == st_yel || hba->cardtype == st_P3) 1227 err = stex_ss_handshake(hba); 1228 else 1229 err = stex_common_handshake(hba); 1230 spin_lock_irqsave(hba->host->host_lock, flags); 1231 mu_status = hba->mu_status; 1232 if (err == 0) { 1233 hba->req_head = 0; 1234 hba->req_tail = 0; 1235 hba->status_head = 0; 1236 hba->status_tail = 0; 1237 hba->out_req_cnt = 0; 1238 hba->mu_status = MU_STATE_STARTED; 1239 } else 1240 hba->mu_status = MU_STATE_FAILED; 1241 if (mu_status == MU_STATE_RESETTING) 1242 wake_up_all(&hba->reset_waitq); 1243 spin_unlock_irqrestore(hba->host->host_lock, flags); 1244 return err; 1245 } 1246 1247 static int stex_abort(struct scsi_cmnd *cmd) 1248 { 1249 struct Scsi_Host *host = cmd->device->host; 1250 struct st_hba *hba = (struct st_hba *)host->hostdata; 1251 u16 tag = cmd->request->tag; 1252 void __iomem *base; 1253 u32 data; 1254 int result = SUCCESS; 1255 unsigned long flags; 1256 1257 scmd_printk(KERN_INFO, cmd, "aborting command\n"); 1258 1259 base = hba->mmio_base; 1260 spin_lock_irqsave(host->host_lock, flags); 1261 if (tag < host->can_queue && 1262 hba->ccb[tag].req && hba->ccb[tag].cmd == cmd) 1263 hba->wait_ccb = &hba->ccb[tag]; 1264 else 1265 goto out; 1266 1267 if (hba->cardtype == st_yel) { 1268 data = readl(base + YI2H_INT); 1269 if (data == 0 || data == 0xffffffff) 1270 goto fail_out; 1271 1272 writel(data, base + YI2H_INT_C); 1273 stex_ss_mu_intr(hba); 1274 } else if (hba->cardtype == st_P3) { 1275 data = readl(base + PSCRATCH4); 1276 if (data == 0xffffffff) 1277 goto fail_out; 1278 if (data != 0) { 1279 writel(data, base + PSCRATCH1); 1280 writel((1 << 22), base + YH2I_INT); 1281 } 1282 stex_ss_mu_intr(hba); 1283 } else { 1284 data = readl(base + ODBL); 1285 if (data == 0 || data == 0xffffffff) 1286 goto fail_out; 1287 1288 writel(data, base + ODBL); 1289 readl(base + ODBL); /* flush */ 1290 stex_mu_intr(hba, data); 1291 } 1292 if (hba->wait_ccb == NULL) { 1293 printk(KERN_WARNING DRV_NAME 1294 "(%s): lost interrupt\n", pci_name(hba->pdev)); 1295 goto out; 1296 } 1297 1298 fail_out: 1299 scsi_dma_unmap(cmd); 1300 hba->wait_ccb->req = NULL; /* nullify the req's future return */ 1301 hba->wait_ccb = NULL; 1302 result = FAILED; 1303 out: 1304 spin_unlock_irqrestore(host->host_lock, flags); 1305 return result; 1306 } 1307 1308 static void stex_hard_reset(struct st_hba *hba) 1309 { 1310 struct pci_bus *bus; 1311 int i; 1312 u16 pci_cmd; 1313 u8 pci_bctl; 1314 1315 for (i = 0; i < 16; i++) 1316 pci_read_config_dword(hba->pdev, i * 4, 1317 &hba->pdev->saved_config_space[i]); 1318 1319 /* Reset secondary bus. Our controller(MU/ATU) is the only device on 1320 secondary bus. Consult Intel 80331/3 developer's manual for detail */ 1321 bus = hba->pdev->bus; 1322 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl); 1323 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET; 1324 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl); 1325 1326 /* 1327 * 1 ms may be enough for 8-port controllers. But 16-port controllers 1328 * require more time to finish bus reset. Use 100 ms here for safety 1329 */ 1330 msleep(100); 1331 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET; 1332 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl); 1333 1334 for (i = 0; i < MU_HARD_RESET_WAIT; i++) { 1335 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd); 1336 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER)) 1337 break; 1338 msleep(1); 1339 } 1340 1341 ssleep(5); 1342 for (i = 0; i < 16; i++) 1343 pci_write_config_dword(hba->pdev, i * 4, 1344 hba->pdev->saved_config_space[i]); 1345 } 1346 1347 static int stex_yos_reset(struct st_hba *hba) 1348 { 1349 void __iomem *base; 1350 unsigned long flags, before; 1351 int ret = 0; 1352 1353 base = hba->mmio_base; 1354 writel(MU_INBOUND_DOORBELL_RESET, base + IDBL); 1355 readl(base + IDBL); /* flush */ 1356 before = jiffies; 1357 while (hba->out_req_cnt > 0) { 1358 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) { 1359 printk(KERN_WARNING DRV_NAME 1360 "(%s): reset timeout\n", pci_name(hba->pdev)); 1361 ret = -1; 1362 break; 1363 } 1364 msleep(1); 1365 } 1366 1367 spin_lock_irqsave(hba->host->host_lock, flags); 1368 if (ret == -1) 1369 hba->mu_status = MU_STATE_FAILED; 1370 else 1371 hba->mu_status = MU_STATE_STARTED; 1372 wake_up_all(&hba->reset_waitq); 1373 spin_unlock_irqrestore(hba->host->host_lock, flags); 1374 1375 return ret; 1376 } 1377 1378 static void stex_ss_reset(struct st_hba *hba) 1379 { 1380 writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT); 1381 readl(hba->mmio_base + YH2I_INT); 1382 ssleep(5); 1383 } 1384 1385 static void stex_p3_reset(struct st_hba *hba) 1386 { 1387 writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT); 1388 ssleep(5); 1389 } 1390 1391 static int stex_do_reset(struct st_hba *hba) 1392 { 1393 unsigned long flags; 1394 unsigned int mu_status = MU_STATE_RESETTING; 1395 1396 spin_lock_irqsave(hba->host->host_lock, flags); 1397 if (hba->mu_status == MU_STATE_STARTING) { 1398 spin_unlock_irqrestore(hba->host->host_lock, flags); 1399 printk(KERN_INFO DRV_NAME "(%s): request reset during init\n", 1400 pci_name(hba->pdev)); 1401 return 0; 1402 } 1403 while (hba->mu_status == MU_STATE_RESETTING) { 1404 spin_unlock_irqrestore(hba->host->host_lock, flags); 1405 wait_event_timeout(hba->reset_waitq, 1406 hba->mu_status != MU_STATE_RESETTING, 1407 MU_MAX_DELAY * HZ); 1408 spin_lock_irqsave(hba->host->host_lock, flags); 1409 mu_status = hba->mu_status; 1410 } 1411 1412 if (mu_status != MU_STATE_RESETTING) { 1413 spin_unlock_irqrestore(hba->host->host_lock, flags); 1414 return (mu_status == MU_STATE_STARTED) ? 0 : -1; 1415 } 1416 1417 hba->mu_status = MU_STATE_RESETTING; 1418 spin_unlock_irqrestore(hba->host->host_lock, flags); 1419 1420 if (hba->cardtype == st_yosemite) 1421 return stex_yos_reset(hba); 1422 1423 if (hba->cardtype == st_shasta) 1424 stex_hard_reset(hba); 1425 else if (hba->cardtype == st_yel) 1426 stex_ss_reset(hba); 1427 else if (hba->cardtype == st_P3) 1428 stex_p3_reset(hba); 1429 1430 return_abnormal_state(hba, DID_RESET); 1431 1432 if (stex_handshake(hba) == 0) 1433 return 0; 1434 1435 printk(KERN_WARNING DRV_NAME "(%s): resetting: handshake failed\n", 1436 pci_name(hba->pdev)); 1437 return -1; 1438 } 1439 1440 static int stex_reset(struct scsi_cmnd *cmd) 1441 { 1442 struct st_hba *hba; 1443 1444 hba = (struct st_hba *) &cmd->device->host->hostdata[0]; 1445 1446 shost_printk(KERN_INFO, cmd->device->host, 1447 "resetting host\n"); 1448 1449 return stex_do_reset(hba) ? FAILED : SUCCESS; 1450 } 1451 1452 static void stex_reset_work(struct work_struct *work) 1453 { 1454 struct st_hba *hba = container_of(work, struct st_hba, reset_work); 1455 1456 stex_do_reset(hba); 1457 } 1458 1459 static int stex_biosparam(struct scsi_device *sdev, 1460 struct block_device *bdev, sector_t capacity, int geom[]) 1461 { 1462 int heads = 255, sectors = 63; 1463 1464 if (capacity < 0x200000) { 1465 heads = 64; 1466 sectors = 32; 1467 } 1468 1469 sector_div(capacity, heads * sectors); 1470 1471 geom[0] = heads; 1472 geom[1] = sectors; 1473 geom[2] = capacity; 1474 1475 return 0; 1476 } 1477 1478 static struct scsi_host_template driver_template = { 1479 .module = THIS_MODULE, 1480 .name = DRV_NAME, 1481 .proc_name = DRV_NAME, 1482 .bios_param = stex_biosparam, 1483 .queuecommand = stex_queuecommand, 1484 .slave_configure = stex_slave_config, 1485 .eh_abort_handler = stex_abort, 1486 .eh_host_reset_handler = stex_reset, 1487 .this_id = -1, 1488 .dma_boundary = PAGE_SIZE - 1, 1489 }; 1490 1491 static struct pci_device_id stex_pci_tbl[] = { 1492 /* st_shasta */ 1493 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1494 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */ 1495 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1496 st_shasta }, /* SuperTrak EX12350 */ 1497 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1498 st_shasta }, /* SuperTrak EX4350 */ 1499 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1500 st_shasta }, /* SuperTrak EX24350 */ 1501 1502 /* st_vsc */ 1503 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc }, 1504 1505 /* st_yosemite */ 1506 { 0x105a, 0x8650, 0x105a, PCI_ANY_ID, 0, 0, st_yosemite }, 1507 1508 /* st_seq */ 1509 { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq }, 1510 1511 /* st_yel */ 1512 { 0x105a, 0x8650, 0x1033, PCI_ANY_ID, 0, 0, st_yel }, 1513 { 0x105a, 0x8760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yel }, 1514 1515 /* st_P3, pluto */ 1516 { PCI_VENDOR_ID_PROMISE, 0x8870, PCI_VENDOR_ID_PROMISE, 1517 0x8870, 0, 0, st_P3 }, 1518 /* st_P3, p3 */ 1519 { PCI_VENDOR_ID_PROMISE, 0x8870, PCI_VENDOR_ID_PROMISE, 1520 0x4300, 0, 0, st_P3 }, 1521 1522 /* st_P3, SymplyStor4E */ 1523 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE, 1524 0x4311, 0, 0, st_P3 }, 1525 /* st_P3, SymplyStor8E */ 1526 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE, 1527 0x4312, 0, 0, st_P3 }, 1528 /* st_P3, SymplyStor4 */ 1529 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE, 1530 0x4321, 0, 0, st_P3 }, 1531 /* st_P3, SymplyStor8 */ 1532 { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE, 1533 0x4322, 0, 0, st_P3 }, 1534 { } /* terminate list */ 1535 }; 1536 1537 static struct st_card_info stex_card_info[] = { 1538 /* st_shasta */ 1539 { 1540 .max_id = 17, 1541 .max_lun = 8, 1542 .max_channel = 0, 1543 .rq_count = 32, 1544 .rq_size = 1048, 1545 .sts_count = 32, 1546 .alloc_rq = stex_alloc_req, 1547 .map_sg = stex_map_sg, 1548 .send = stex_send_cmd, 1549 }, 1550 1551 /* st_vsc */ 1552 { 1553 .max_id = 129, 1554 .max_lun = 1, 1555 .max_channel = 0, 1556 .rq_count = 32, 1557 .rq_size = 1048, 1558 .sts_count = 32, 1559 .alloc_rq = stex_alloc_req, 1560 .map_sg = stex_map_sg, 1561 .send = stex_send_cmd, 1562 }, 1563 1564 /* st_yosemite */ 1565 { 1566 .max_id = 2, 1567 .max_lun = 256, 1568 .max_channel = 0, 1569 .rq_count = 256, 1570 .rq_size = 1048, 1571 .sts_count = 256, 1572 .alloc_rq = stex_alloc_req, 1573 .map_sg = stex_map_sg, 1574 .send = stex_send_cmd, 1575 }, 1576 1577 /* st_seq */ 1578 { 1579 .max_id = 129, 1580 .max_lun = 1, 1581 .max_channel = 0, 1582 .rq_count = 32, 1583 .rq_size = 1048, 1584 .sts_count = 32, 1585 .alloc_rq = stex_alloc_req, 1586 .map_sg = stex_map_sg, 1587 .send = stex_send_cmd, 1588 }, 1589 1590 /* st_yel */ 1591 { 1592 .max_id = 129, 1593 .max_lun = 256, 1594 .max_channel = 3, 1595 .rq_count = 801, 1596 .rq_size = 512, 1597 .sts_count = 801, 1598 .alloc_rq = stex_ss_alloc_req, 1599 .map_sg = stex_ss_map_sg, 1600 .send = stex_ss_send_cmd, 1601 }, 1602 1603 /* st_P3 */ 1604 { 1605 .max_id = 129, 1606 .max_lun = 256, 1607 .max_channel = 0, 1608 .rq_count = 801, 1609 .rq_size = 512, 1610 .sts_count = 801, 1611 .alloc_rq = stex_ss_alloc_req, 1612 .map_sg = stex_ss_map_sg, 1613 .send = stex_ss_send_cmd, 1614 }, 1615 }; 1616 1617 static int stex_request_irq(struct st_hba *hba) 1618 { 1619 struct pci_dev *pdev = hba->pdev; 1620 int status; 1621 1622 if (msi || hba->cardtype == st_P3) { 1623 status = pci_enable_msi(pdev); 1624 if (status != 0) 1625 printk(KERN_ERR DRV_NAME 1626 "(%s): error %d setting up MSI\n", 1627 pci_name(pdev), status); 1628 else 1629 hba->msi_enabled = 1; 1630 } else 1631 hba->msi_enabled = 0; 1632 1633 status = request_irq(pdev->irq, 1634 (hba->cardtype == st_yel || hba->cardtype == st_P3) ? 1635 stex_ss_intr : stex_intr, IRQF_SHARED, DRV_NAME, hba); 1636 1637 if (status != 0) { 1638 if (hba->msi_enabled) 1639 pci_disable_msi(pdev); 1640 } 1641 return status; 1642 } 1643 1644 static void stex_free_irq(struct st_hba *hba) 1645 { 1646 struct pci_dev *pdev = hba->pdev; 1647 1648 free_irq(pdev->irq, hba); 1649 if (hba->msi_enabled) 1650 pci_disable_msi(pdev); 1651 } 1652 1653 static int stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) 1654 { 1655 struct st_hba *hba; 1656 struct Scsi_Host *host; 1657 const struct st_card_info *ci = NULL; 1658 u32 sts_offset, cp_offset, scratch_offset; 1659 int err; 1660 1661 err = pci_enable_device(pdev); 1662 if (err) 1663 return err; 1664 1665 pci_set_master(pdev); 1666 1667 S6flag = 0; 1668 register_reboot_notifier(&stex_notifier); 1669 1670 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba)); 1671 1672 if (!host) { 1673 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n", 1674 pci_name(pdev)); 1675 err = -ENOMEM; 1676 goto out_disable; 1677 } 1678 1679 hba = (struct st_hba *)host->hostdata; 1680 memset(hba, 0, sizeof(struct st_hba)); 1681 1682 err = pci_request_regions(pdev, DRV_NAME); 1683 if (err < 0) { 1684 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n", 1685 pci_name(pdev)); 1686 goto out_scsi_host_put; 1687 } 1688 1689 hba->mmio_base = pci_ioremap_bar(pdev, 0); 1690 if ( !hba->mmio_base) { 1691 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n", 1692 pci_name(pdev)); 1693 err = -ENOMEM; 1694 goto out_release_regions; 1695 } 1696 1697 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 1698 if (err) 1699 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 1700 if (err) { 1701 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n", 1702 pci_name(pdev)); 1703 goto out_iounmap; 1704 } 1705 1706 hba->cardtype = (unsigned int) id->driver_data; 1707 ci = &stex_card_info[hba->cardtype]; 1708 switch (id->subdevice) { 1709 case 0x4221: 1710 case 0x4222: 1711 case 0x4223: 1712 case 0x4224: 1713 case 0x4225: 1714 case 0x4226: 1715 case 0x4227: 1716 case 0x4261: 1717 case 0x4262: 1718 case 0x4263: 1719 case 0x4264: 1720 case 0x4265: 1721 break; 1722 default: 1723 if (hba->cardtype == st_yel || hba->cardtype == st_P3) 1724 hba->supports_pm = 1; 1725 } 1726 1727 sts_offset = scratch_offset = (ci->rq_count+1) * ci->rq_size; 1728 if (hba->cardtype == st_yel || hba->cardtype == st_P3) 1729 sts_offset += (ci->sts_count+1) * sizeof(u32); 1730 cp_offset = sts_offset + (ci->sts_count+1) * sizeof(struct status_msg); 1731 hba->dma_size = cp_offset + sizeof(struct st_frame); 1732 if (hba->cardtype == st_seq || 1733 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) { 1734 hba->extra_offset = hba->dma_size; 1735 hba->dma_size += ST_ADDITIONAL_MEM; 1736 } 1737 hba->dma_mem = dma_alloc_coherent(&pdev->dev, 1738 hba->dma_size, &hba->dma_handle, GFP_KERNEL); 1739 if (!hba->dma_mem) { 1740 /* Retry minimum coherent mapping for st_seq and st_vsc */ 1741 if (hba->cardtype == st_seq || 1742 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) { 1743 printk(KERN_WARNING DRV_NAME 1744 "(%s): allocating min buffer for controller\n", 1745 pci_name(pdev)); 1746 hba->dma_size = hba->extra_offset 1747 + ST_ADDITIONAL_MEM_MIN; 1748 hba->dma_mem = dma_alloc_coherent(&pdev->dev, 1749 hba->dma_size, &hba->dma_handle, GFP_KERNEL); 1750 } 1751 1752 if (!hba->dma_mem) { 1753 err = -ENOMEM; 1754 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n", 1755 pci_name(pdev)); 1756 goto out_iounmap; 1757 } 1758 } 1759 1760 hba->ccb = kcalloc(ci->rq_count, sizeof(struct st_ccb), GFP_KERNEL); 1761 if (!hba->ccb) { 1762 err = -ENOMEM; 1763 printk(KERN_ERR DRV_NAME "(%s): ccb alloc failed\n", 1764 pci_name(pdev)); 1765 goto out_pci_free; 1766 } 1767 1768 if (hba->cardtype == st_yel || hba->cardtype == st_P3) 1769 hba->scratch = (__le32 *)(hba->dma_mem + scratch_offset); 1770 hba->status_buffer = (struct status_msg *)(hba->dma_mem + sts_offset); 1771 hba->copy_buffer = hba->dma_mem + cp_offset; 1772 hba->rq_count = ci->rq_count; 1773 hba->rq_size = ci->rq_size; 1774 hba->sts_count = ci->sts_count; 1775 hba->alloc_rq = ci->alloc_rq; 1776 hba->map_sg = ci->map_sg; 1777 hba->send = ci->send; 1778 hba->mu_status = MU_STATE_STARTING; 1779 hba->msi_lock = 0; 1780 1781 if (hba->cardtype == st_yel || hba->cardtype == st_P3) 1782 host->sg_tablesize = 38; 1783 else 1784 host->sg_tablesize = 32; 1785 host->can_queue = ci->rq_count; 1786 host->cmd_per_lun = ci->rq_count; 1787 host->max_id = ci->max_id; 1788 host->max_lun = ci->max_lun; 1789 host->max_channel = ci->max_channel; 1790 host->unique_id = host->host_no; 1791 host->max_cmd_len = STEX_CDB_LENGTH; 1792 1793 hba->host = host; 1794 hba->pdev = pdev; 1795 init_waitqueue_head(&hba->reset_waitq); 1796 1797 snprintf(hba->work_q_name, sizeof(hba->work_q_name), 1798 "stex_wq_%d", host->host_no); 1799 hba->work_q = create_singlethread_workqueue(hba->work_q_name); 1800 if (!hba->work_q) { 1801 printk(KERN_ERR DRV_NAME "(%s): create workqueue failed\n", 1802 pci_name(pdev)); 1803 err = -ENOMEM; 1804 goto out_ccb_free; 1805 } 1806 INIT_WORK(&hba->reset_work, stex_reset_work); 1807 1808 err = stex_request_irq(hba); 1809 if (err) { 1810 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n", 1811 pci_name(pdev)); 1812 goto out_free_wq; 1813 } 1814 1815 err = stex_handshake(hba); 1816 if (err) 1817 goto out_free_irq; 1818 1819 pci_set_drvdata(pdev, hba); 1820 1821 err = scsi_add_host(host, &pdev->dev); 1822 if (err) { 1823 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n", 1824 pci_name(pdev)); 1825 goto out_free_irq; 1826 } 1827 1828 scsi_scan_host(host); 1829 1830 return 0; 1831 1832 out_free_irq: 1833 stex_free_irq(hba); 1834 out_free_wq: 1835 destroy_workqueue(hba->work_q); 1836 out_ccb_free: 1837 kfree(hba->ccb); 1838 out_pci_free: 1839 dma_free_coherent(&pdev->dev, hba->dma_size, 1840 hba->dma_mem, hba->dma_handle); 1841 out_iounmap: 1842 iounmap(hba->mmio_base); 1843 out_release_regions: 1844 pci_release_regions(pdev); 1845 out_scsi_host_put: 1846 scsi_host_put(host); 1847 out_disable: 1848 pci_disable_device(pdev); 1849 1850 return err; 1851 } 1852 1853 static void stex_hba_stop(struct st_hba *hba, int st_sleep_mic) 1854 { 1855 struct req_msg *req; 1856 struct st_msg_header *msg_h; 1857 unsigned long flags; 1858 unsigned long before; 1859 u16 tag = 0; 1860 1861 spin_lock_irqsave(hba->host->host_lock, flags); 1862 1863 if ((hba->cardtype == st_yel || hba->cardtype == st_P3) && 1864 hba->supports_pm == 1) { 1865 if (st_sleep_mic == ST_NOTHANDLED) { 1866 spin_unlock_irqrestore(hba->host->host_lock, flags); 1867 return; 1868 } 1869 } 1870 req = hba->alloc_rq(hba); 1871 if (hba->cardtype == st_yel || hba->cardtype == st_P3) { 1872 msg_h = (struct st_msg_header *)req - 1; 1873 memset(msg_h, 0, hba->rq_size); 1874 } else 1875 memset(req, 0, hba->rq_size); 1876 1877 if ((hba->cardtype == st_yosemite || hba->cardtype == st_yel 1878 || hba->cardtype == st_P3) 1879 && st_sleep_mic == ST_IGNORED) { 1880 req->cdb[0] = MGT_CMD; 1881 req->cdb[1] = MGT_CMD_SIGNATURE; 1882 req->cdb[2] = CTLR_CONFIG_CMD; 1883 req->cdb[3] = CTLR_SHUTDOWN; 1884 } else if ((hba->cardtype == st_yel || hba->cardtype == st_P3) 1885 && st_sleep_mic != ST_IGNORED) { 1886 req->cdb[0] = MGT_CMD; 1887 req->cdb[1] = MGT_CMD_SIGNATURE; 1888 req->cdb[2] = CTLR_CONFIG_CMD; 1889 req->cdb[3] = PMIC_SHUTDOWN; 1890 req->cdb[4] = st_sleep_mic; 1891 } else { 1892 req->cdb[0] = CONTROLLER_CMD; 1893 req->cdb[1] = CTLR_POWER_STATE_CHANGE; 1894 req->cdb[2] = CTLR_POWER_SAVING; 1895 } 1896 hba->ccb[tag].cmd = NULL; 1897 hba->ccb[tag].sg_count = 0; 1898 hba->ccb[tag].sense_bufflen = 0; 1899 hba->ccb[tag].sense_buffer = NULL; 1900 hba->ccb[tag].req_type = PASSTHRU_REQ_TYPE; 1901 hba->send(hba, req, tag); 1902 spin_unlock_irqrestore(hba->host->host_lock, flags); 1903 before = jiffies; 1904 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) { 1905 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) { 1906 hba->ccb[tag].req_type = 0; 1907 hba->mu_status = MU_STATE_STOP; 1908 return; 1909 } 1910 msleep(1); 1911 } 1912 hba->mu_status = MU_STATE_STOP; 1913 } 1914 1915 static void stex_hba_free(struct st_hba *hba) 1916 { 1917 stex_free_irq(hba); 1918 1919 destroy_workqueue(hba->work_q); 1920 1921 iounmap(hba->mmio_base); 1922 1923 pci_release_regions(hba->pdev); 1924 1925 kfree(hba->ccb); 1926 1927 dma_free_coherent(&hba->pdev->dev, hba->dma_size, 1928 hba->dma_mem, hba->dma_handle); 1929 } 1930 1931 static void stex_remove(struct pci_dev *pdev) 1932 { 1933 struct st_hba *hba = pci_get_drvdata(pdev); 1934 1935 hba->mu_status = MU_STATE_NOCONNECT; 1936 return_abnormal_state(hba, DID_NO_CONNECT); 1937 scsi_remove_host(hba->host); 1938 1939 scsi_block_requests(hba->host); 1940 1941 stex_hba_free(hba); 1942 1943 scsi_host_put(hba->host); 1944 1945 pci_disable_device(pdev); 1946 1947 unregister_reboot_notifier(&stex_notifier); 1948 } 1949 1950 static void stex_shutdown(struct pci_dev *pdev) 1951 { 1952 struct st_hba *hba = pci_get_drvdata(pdev); 1953 1954 if (hba->supports_pm == 0) { 1955 stex_hba_stop(hba, ST_IGNORED); 1956 } else if (hba->supports_pm == 1 && S6flag) { 1957 unregister_reboot_notifier(&stex_notifier); 1958 stex_hba_stop(hba, ST_S6); 1959 } else 1960 stex_hba_stop(hba, ST_S5); 1961 } 1962 1963 static int stex_choice_sleep_mic(struct st_hba *hba, pm_message_t state) 1964 { 1965 switch (state.event) { 1966 case PM_EVENT_SUSPEND: 1967 return ST_S3; 1968 case PM_EVENT_HIBERNATE: 1969 hba->msi_lock = 0; 1970 return ST_S4; 1971 default: 1972 return ST_NOTHANDLED; 1973 } 1974 } 1975 1976 static int stex_suspend(struct pci_dev *pdev, pm_message_t state) 1977 { 1978 struct st_hba *hba = pci_get_drvdata(pdev); 1979 1980 if ((hba->cardtype == st_yel || hba->cardtype == st_P3) 1981 && hba->supports_pm == 1) 1982 stex_hba_stop(hba, stex_choice_sleep_mic(hba, state)); 1983 else 1984 stex_hba_stop(hba, ST_IGNORED); 1985 return 0; 1986 } 1987 1988 static int stex_resume(struct pci_dev *pdev) 1989 { 1990 struct st_hba *hba = pci_get_drvdata(pdev); 1991 1992 hba->mu_status = MU_STATE_STARTING; 1993 stex_handshake(hba); 1994 return 0; 1995 } 1996 1997 static int stex_halt(struct notifier_block *nb, unsigned long event, void *buf) 1998 { 1999 S6flag = 1; 2000 return NOTIFY_OK; 2001 } 2002 MODULE_DEVICE_TABLE(pci, stex_pci_tbl); 2003 2004 static struct pci_driver stex_pci_driver = { 2005 .name = DRV_NAME, 2006 .id_table = stex_pci_tbl, 2007 .probe = stex_probe, 2008 .remove = stex_remove, 2009 .shutdown = stex_shutdown, 2010 .suspend = stex_suspend, 2011 .resume = stex_resume, 2012 }; 2013 2014 static int __init stex_init(void) 2015 { 2016 printk(KERN_INFO DRV_NAME 2017 ": Promise SuperTrak EX Driver version: %s\n", 2018 ST_DRIVER_VERSION); 2019 2020 return pci_register_driver(&stex_pci_driver); 2021 } 2022 2023 static void __exit stex_exit(void) 2024 { 2025 pci_unregister_driver(&stex_pci_driver); 2026 } 2027 2028 module_init(stex_init); 2029 module_exit(stex_exit); 2030