1 /* 2 * SuperTrak EX Series Storage Controller driver for Linux 3 * 4 * Copyright (C) 2005-2009 Promise Technology Inc. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 * 11 * Written By: 12 * Ed Lin <promise_linux@promise.com> 13 * 14 */ 15 16 #include <linux/init.h> 17 #include <linux/errno.h> 18 #include <linux/kernel.h> 19 #include <linux/delay.h> 20 #include <linux/slab.h> 21 #include <linux/time.h> 22 #include <linux/pci.h> 23 #include <linux/blkdev.h> 24 #include <linux/interrupt.h> 25 #include <linux/types.h> 26 #include <linux/module.h> 27 #include <linux/spinlock.h> 28 #include <asm/io.h> 29 #include <asm/irq.h> 30 #include <asm/byteorder.h> 31 #include <scsi/scsi.h> 32 #include <scsi/scsi_device.h> 33 #include <scsi/scsi_cmnd.h> 34 #include <scsi/scsi_host.h> 35 #include <scsi/scsi_tcq.h> 36 #include <scsi/scsi_dbg.h> 37 #include <scsi/scsi_eh.h> 38 39 #define DRV_NAME "stex" 40 #define ST_DRIVER_VERSION "4.6.0000.4" 41 #define ST_VER_MAJOR 4 42 #define ST_VER_MINOR 6 43 #define ST_OEM 0 44 #define ST_BUILD_VER 4 45 46 enum { 47 /* MU register offset */ 48 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */ 49 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */ 50 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */ 51 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */ 52 IDBL = 0x20, /* MU_INBOUND_DOORBELL */ 53 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */ 54 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */ 55 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */ 56 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */ 57 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */ 58 59 YIOA_STATUS = 0x00, 60 YH2I_INT = 0x20, 61 YINT_EN = 0x34, 62 YI2H_INT = 0x9c, 63 YI2H_INT_C = 0xa0, 64 YH2I_REQ = 0xc0, 65 YH2I_REQ_HI = 0xc4, 66 67 /* MU register value */ 68 MU_INBOUND_DOORBELL_HANDSHAKE = (1 << 0), 69 MU_INBOUND_DOORBELL_REQHEADCHANGED = (1 << 1), 70 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = (1 << 2), 71 MU_INBOUND_DOORBELL_HMUSTOPPED = (1 << 3), 72 MU_INBOUND_DOORBELL_RESET = (1 << 4), 73 74 MU_OUTBOUND_DOORBELL_HANDSHAKE = (1 << 0), 75 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = (1 << 1), 76 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = (1 << 2), 77 MU_OUTBOUND_DOORBELL_BUSCHANGE = (1 << 3), 78 MU_OUTBOUND_DOORBELL_HASEVENT = (1 << 4), 79 MU_OUTBOUND_DOORBELL_REQUEST_RESET = (1 << 27), 80 81 /* MU status code */ 82 MU_STATE_STARTING = 1, 83 MU_STATE_STARTED = 2, 84 MU_STATE_RESETTING = 3, 85 MU_STATE_FAILED = 4, 86 87 MU_MAX_DELAY = 120, 88 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55, 89 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000, 90 MU_HARD_RESET_WAIT = 30000, 91 HMU_PARTNER_TYPE = 2, 92 93 /* firmware returned values */ 94 SRB_STATUS_SUCCESS = 0x01, 95 SRB_STATUS_ERROR = 0x04, 96 SRB_STATUS_BUSY = 0x05, 97 SRB_STATUS_INVALID_REQUEST = 0x06, 98 SRB_STATUS_SELECTION_TIMEOUT = 0x0A, 99 SRB_SEE_SENSE = 0x80, 100 101 /* task attribute */ 102 TASK_ATTRIBUTE_SIMPLE = 0x0, 103 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1, 104 TASK_ATTRIBUTE_ORDERED = 0x2, 105 TASK_ATTRIBUTE_ACA = 0x4, 106 107 SS_STS_NORMAL = 0x80000000, 108 SS_STS_DONE = 0x40000000, 109 SS_STS_HANDSHAKE = 0x20000000, 110 111 SS_HEAD_HANDSHAKE = 0x80, 112 113 SS_H2I_INT_RESET = 0x100, 114 115 SS_I2H_REQUEST_RESET = 0x2000, 116 117 SS_MU_OPERATIONAL = 0x80000000, 118 119 STEX_CDB_LENGTH = 16, 120 STATUS_VAR_LEN = 128, 121 122 /* sg flags */ 123 SG_CF_EOT = 0x80, /* end of table */ 124 SG_CF_64B = 0x40, /* 64 bit item */ 125 SG_CF_HOST = 0x20, /* sg in host memory */ 126 MSG_DATA_DIR_ND = 0, 127 MSG_DATA_DIR_IN = 1, 128 MSG_DATA_DIR_OUT = 2, 129 130 st_shasta = 0, 131 st_vsc = 1, 132 st_yosemite = 2, 133 st_seq = 3, 134 st_yel = 4, 135 136 PASSTHRU_REQ_TYPE = 0x00000001, 137 PASSTHRU_REQ_NO_WAKEUP = 0x00000100, 138 ST_INTERNAL_TIMEOUT = 180, 139 140 ST_TO_CMD = 0, 141 ST_FROM_CMD = 1, 142 143 /* vendor specific commands of Promise */ 144 MGT_CMD = 0xd8, 145 SINBAND_MGT_CMD = 0xd9, 146 ARRAY_CMD = 0xe0, 147 CONTROLLER_CMD = 0xe1, 148 DEBUGGING_CMD = 0xe2, 149 PASSTHRU_CMD = 0xe3, 150 151 PASSTHRU_GET_ADAPTER = 0x05, 152 PASSTHRU_GET_DRVVER = 0x10, 153 154 CTLR_CONFIG_CMD = 0x03, 155 CTLR_SHUTDOWN = 0x0d, 156 157 CTLR_POWER_STATE_CHANGE = 0x0e, 158 CTLR_POWER_SAVING = 0x01, 159 160 PASSTHRU_SIGNATURE = 0x4e415041, 161 MGT_CMD_SIGNATURE = 0xba, 162 163 INQUIRY_EVPD = 0x01, 164 165 ST_ADDITIONAL_MEM = 0x200000, 166 ST_ADDITIONAL_MEM_MIN = 0x80000, 167 }; 168 169 struct st_sgitem { 170 u8 ctrl; /* SG_CF_xxx */ 171 u8 reserved[3]; 172 __le32 count; 173 __le64 addr; 174 }; 175 176 struct st_ss_sgitem { 177 __le32 addr; 178 __le32 addr_hi; 179 __le32 count; 180 }; 181 182 struct st_sgtable { 183 __le16 sg_count; 184 __le16 max_sg_count; 185 __le32 sz_in_byte; 186 }; 187 188 struct st_msg_header { 189 __le64 handle; 190 u8 flag; 191 u8 channel; 192 __le16 timeout; 193 u32 reserved; 194 }; 195 196 struct handshake_frame { 197 __le64 rb_phy; /* request payload queue physical address */ 198 __le16 req_sz; /* size of each request payload */ 199 __le16 req_cnt; /* count of reqs the buffer can hold */ 200 __le16 status_sz; /* size of each status payload */ 201 __le16 status_cnt; /* count of status the buffer can hold */ 202 __le64 hosttime; /* seconds from Jan 1, 1970 (GMT) */ 203 u8 partner_type; /* who sends this frame */ 204 u8 reserved0[7]; 205 __le32 partner_ver_major; 206 __le32 partner_ver_minor; 207 __le32 partner_ver_oem; 208 __le32 partner_ver_build; 209 __le32 extra_offset; /* NEW */ 210 __le32 extra_size; /* NEW */ 211 __le32 scratch_size; 212 u32 reserved1; 213 }; 214 215 struct req_msg { 216 __le16 tag; 217 u8 lun; 218 u8 target; 219 u8 task_attr; 220 u8 task_manage; 221 u8 data_dir; 222 u8 payload_sz; /* payload size in 4-byte, not used */ 223 u8 cdb[STEX_CDB_LENGTH]; 224 u32 variable[0]; 225 }; 226 227 struct status_msg { 228 __le16 tag; 229 u8 lun; 230 u8 target; 231 u8 srb_status; 232 u8 scsi_status; 233 u8 reserved; 234 u8 payload_sz; /* payload size in 4-byte */ 235 u8 variable[STATUS_VAR_LEN]; 236 }; 237 238 struct ver_info { 239 u32 major; 240 u32 minor; 241 u32 oem; 242 u32 build; 243 u32 reserved[2]; 244 }; 245 246 struct st_frame { 247 u32 base[6]; 248 u32 rom_addr; 249 250 struct ver_info drv_ver; 251 struct ver_info bios_ver; 252 253 u32 bus; 254 u32 slot; 255 u32 irq_level; 256 u32 irq_vec; 257 u32 id; 258 u32 subid; 259 260 u32 dimm_size; 261 u8 dimm_type; 262 u8 reserved[3]; 263 264 u32 channel; 265 u32 reserved1; 266 }; 267 268 struct st_drvver { 269 u32 major; 270 u32 minor; 271 u32 oem; 272 u32 build; 273 u32 signature[2]; 274 u8 console_id; 275 u8 host_no; 276 u8 reserved0[2]; 277 u32 reserved[3]; 278 }; 279 280 struct st_ccb { 281 struct req_msg *req; 282 struct scsi_cmnd *cmd; 283 284 void *sense_buffer; 285 unsigned int sense_bufflen; 286 int sg_count; 287 288 u32 req_type; 289 u8 srb_status; 290 u8 scsi_status; 291 u8 reserved[2]; 292 }; 293 294 struct st_hba { 295 void __iomem *mmio_base; /* iomapped PCI memory space */ 296 void *dma_mem; 297 dma_addr_t dma_handle; 298 size_t dma_size; 299 300 struct Scsi_Host *host; 301 struct pci_dev *pdev; 302 303 struct req_msg * (*alloc_rq) (struct st_hba *); 304 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *); 305 void (*send) (struct st_hba *, struct req_msg *, u16); 306 307 u32 req_head; 308 u32 req_tail; 309 u32 status_head; 310 u32 status_tail; 311 312 struct status_msg *status_buffer; 313 void *copy_buffer; /* temp buffer for driver-handled commands */ 314 struct st_ccb *ccb; 315 struct st_ccb *wait_ccb; 316 __le32 *scratch; 317 318 char work_q_name[20]; 319 struct workqueue_struct *work_q; 320 struct work_struct reset_work; 321 wait_queue_head_t reset_waitq; 322 unsigned int mu_status; 323 unsigned int cardtype; 324 int msi_enabled; 325 int out_req_cnt; 326 u32 extra_offset; 327 u16 rq_count; 328 u16 rq_size; 329 u16 sts_count; 330 }; 331 332 struct st_card_info { 333 struct req_msg * (*alloc_rq) (struct st_hba *); 334 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *); 335 void (*send) (struct st_hba *, struct req_msg *, u16); 336 unsigned int max_id; 337 unsigned int max_lun; 338 unsigned int max_channel; 339 u16 rq_count; 340 u16 rq_size; 341 u16 sts_count; 342 }; 343 344 static int msi; 345 module_param(msi, int, 0); 346 MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)"); 347 348 static const char console_inq_page[] = 349 { 350 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30, 351 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */ 352 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */ 353 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */ 354 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */ 355 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */ 356 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */ 357 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20 358 }; 359 360 MODULE_AUTHOR("Ed Lin"); 361 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers"); 362 MODULE_LICENSE("GPL"); 363 MODULE_VERSION(ST_DRIVER_VERSION); 364 365 static void stex_gettime(__le64 *time) 366 { 367 struct timeval tv; 368 369 do_gettimeofday(&tv); 370 *time = cpu_to_le64(tv.tv_sec); 371 } 372 373 static struct status_msg *stex_get_status(struct st_hba *hba) 374 { 375 struct status_msg *status = hba->status_buffer + hba->status_tail; 376 377 ++hba->status_tail; 378 hba->status_tail %= hba->sts_count+1; 379 380 return status; 381 } 382 383 static void stex_invalid_field(struct scsi_cmnd *cmd, 384 void (*done)(struct scsi_cmnd *)) 385 { 386 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; 387 388 /* "Invalid field in cdb" */ 389 scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24, 390 0x0); 391 done(cmd); 392 } 393 394 static struct req_msg *stex_alloc_req(struct st_hba *hba) 395 { 396 struct req_msg *req = hba->dma_mem + hba->req_head * hba->rq_size; 397 398 ++hba->req_head; 399 hba->req_head %= hba->rq_count+1; 400 401 return req; 402 } 403 404 static struct req_msg *stex_ss_alloc_req(struct st_hba *hba) 405 { 406 return (struct req_msg *)(hba->dma_mem + 407 hba->req_head * hba->rq_size + sizeof(struct st_msg_header)); 408 } 409 410 static int stex_map_sg(struct st_hba *hba, 411 struct req_msg *req, struct st_ccb *ccb) 412 { 413 struct scsi_cmnd *cmd; 414 struct scatterlist *sg; 415 struct st_sgtable *dst; 416 struct st_sgitem *table; 417 int i, nseg; 418 419 cmd = ccb->cmd; 420 nseg = scsi_dma_map(cmd); 421 BUG_ON(nseg < 0); 422 if (nseg) { 423 dst = (struct st_sgtable *)req->variable; 424 425 ccb->sg_count = nseg; 426 dst->sg_count = cpu_to_le16((u16)nseg); 427 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize); 428 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd)); 429 430 table = (struct st_sgitem *)(dst + 1); 431 scsi_for_each_sg(cmd, sg, nseg, i) { 432 table[i].count = cpu_to_le32((u32)sg_dma_len(sg)); 433 table[i].addr = cpu_to_le64(sg_dma_address(sg)); 434 table[i].ctrl = SG_CF_64B | SG_CF_HOST; 435 } 436 table[--i].ctrl |= SG_CF_EOT; 437 } 438 439 return nseg; 440 } 441 442 static int stex_ss_map_sg(struct st_hba *hba, 443 struct req_msg *req, struct st_ccb *ccb) 444 { 445 struct scsi_cmnd *cmd; 446 struct scatterlist *sg; 447 struct st_sgtable *dst; 448 struct st_ss_sgitem *table; 449 int i, nseg; 450 451 cmd = ccb->cmd; 452 nseg = scsi_dma_map(cmd); 453 BUG_ON(nseg < 0); 454 if (nseg) { 455 dst = (struct st_sgtable *)req->variable; 456 457 ccb->sg_count = nseg; 458 dst->sg_count = cpu_to_le16((u16)nseg); 459 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize); 460 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd)); 461 462 table = (struct st_ss_sgitem *)(dst + 1); 463 scsi_for_each_sg(cmd, sg, nseg, i) { 464 table[i].count = cpu_to_le32((u32)sg_dma_len(sg)); 465 table[i].addr = 466 cpu_to_le32(sg_dma_address(sg) & 0xffffffff); 467 table[i].addr_hi = 468 cpu_to_le32((sg_dma_address(sg) >> 16) >> 16); 469 } 470 } 471 472 return nseg; 473 } 474 475 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb) 476 { 477 struct st_frame *p; 478 size_t count = sizeof(struct st_frame); 479 480 p = hba->copy_buffer; 481 scsi_sg_copy_to_buffer(ccb->cmd, p, count); 482 memset(p->base, 0, sizeof(u32)*6); 483 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0); 484 p->rom_addr = 0; 485 486 p->drv_ver.major = ST_VER_MAJOR; 487 p->drv_ver.minor = ST_VER_MINOR; 488 p->drv_ver.oem = ST_OEM; 489 p->drv_ver.build = ST_BUILD_VER; 490 491 p->bus = hba->pdev->bus->number; 492 p->slot = hba->pdev->devfn; 493 p->irq_level = 0; 494 p->irq_vec = hba->pdev->irq; 495 p->id = hba->pdev->vendor << 16 | hba->pdev->device; 496 p->subid = 497 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device; 498 499 scsi_sg_copy_from_buffer(ccb->cmd, p, count); 500 } 501 502 static void 503 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag) 504 { 505 req->tag = cpu_to_le16(tag); 506 507 hba->ccb[tag].req = req; 508 hba->out_req_cnt++; 509 510 writel(hba->req_head, hba->mmio_base + IMR0); 511 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL); 512 readl(hba->mmio_base + IDBL); /* flush */ 513 } 514 515 static void 516 stex_ss_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag) 517 { 518 struct scsi_cmnd *cmd; 519 struct st_msg_header *msg_h; 520 dma_addr_t addr; 521 522 req->tag = cpu_to_le16(tag); 523 524 hba->ccb[tag].req = req; 525 hba->out_req_cnt++; 526 527 cmd = hba->ccb[tag].cmd; 528 msg_h = (struct st_msg_header *)req - 1; 529 if (likely(cmd)) { 530 msg_h->channel = (u8)cmd->device->channel; 531 msg_h->timeout = cpu_to_le16(cmd->request->timeout/HZ); 532 } 533 addr = hba->dma_handle + hba->req_head * hba->rq_size; 534 addr += (hba->ccb[tag].sg_count+4)/11; 535 msg_h->handle = cpu_to_le64(addr); 536 537 ++hba->req_head; 538 hba->req_head %= hba->rq_count+1; 539 540 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI); 541 readl(hba->mmio_base + YH2I_REQ_HI); /* flush */ 542 writel(addr, hba->mmio_base + YH2I_REQ); 543 readl(hba->mmio_base + YH2I_REQ); /* flush */ 544 } 545 546 static int 547 stex_slave_alloc(struct scsi_device *sdev) 548 { 549 /* Cheat: usually extracted from Inquiry data */ 550 sdev->tagged_supported = 1; 551 552 scsi_activate_tcq(sdev, sdev->host->can_queue); 553 554 return 0; 555 } 556 557 static int 558 stex_slave_config(struct scsi_device *sdev) 559 { 560 sdev->use_10_for_rw = 1; 561 sdev->use_10_for_ms = 1; 562 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); 563 sdev->tagged_supported = 1; 564 565 return 0; 566 } 567 568 static void 569 stex_slave_destroy(struct scsi_device *sdev) 570 { 571 scsi_deactivate_tcq(sdev, 1); 572 } 573 574 static int 575 stex_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) 576 { 577 struct st_hba *hba; 578 struct Scsi_Host *host; 579 unsigned int id, lun; 580 struct req_msg *req; 581 u16 tag; 582 583 host = cmd->device->host; 584 id = cmd->device->id; 585 lun = cmd->device->lun; 586 hba = (struct st_hba *) &host->hostdata[0]; 587 588 if (unlikely(hba->mu_status == MU_STATE_RESETTING)) 589 return SCSI_MLQUEUE_HOST_BUSY; 590 591 switch (cmd->cmnd[0]) { 592 case MODE_SENSE_10: 593 { 594 static char ms10_caching_page[12] = 595 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 }; 596 unsigned char page; 597 598 page = cmd->cmnd[2] & 0x3f; 599 if (page == 0x8 || page == 0x3f) { 600 scsi_sg_copy_from_buffer(cmd, ms10_caching_page, 601 sizeof(ms10_caching_page)); 602 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; 603 done(cmd); 604 } else 605 stex_invalid_field(cmd, done); 606 return 0; 607 } 608 case REPORT_LUNS: 609 /* 610 * The shasta firmware does not report actual luns in the 611 * target, so fail the command to force sequential lun scan. 612 * Also, the console device does not support this command. 613 */ 614 if (hba->cardtype == st_shasta || id == host->max_id - 1) { 615 stex_invalid_field(cmd, done); 616 return 0; 617 } 618 break; 619 case TEST_UNIT_READY: 620 if (id == host->max_id - 1) { 621 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; 622 done(cmd); 623 return 0; 624 } 625 break; 626 case INQUIRY: 627 if (lun >= host->max_lun) { 628 cmd->result = DID_NO_CONNECT << 16; 629 done(cmd); 630 return 0; 631 } 632 if (id != host->max_id - 1) 633 break; 634 if (!lun && !cmd->device->channel && 635 (cmd->cmnd[1] & INQUIRY_EVPD) == 0) { 636 scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page, 637 sizeof(console_inq_page)); 638 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; 639 done(cmd); 640 } else 641 stex_invalid_field(cmd, done); 642 return 0; 643 case PASSTHRU_CMD: 644 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) { 645 struct st_drvver ver; 646 size_t cp_len = sizeof(ver); 647 648 ver.major = ST_VER_MAJOR; 649 ver.minor = ST_VER_MINOR; 650 ver.oem = ST_OEM; 651 ver.build = ST_BUILD_VER; 652 ver.signature[0] = PASSTHRU_SIGNATURE; 653 ver.console_id = host->max_id - 1; 654 ver.host_no = hba->host->host_no; 655 cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len); 656 cmd->result = sizeof(ver) == cp_len ? 657 DID_OK << 16 | COMMAND_COMPLETE << 8 : 658 DID_ERROR << 16 | COMMAND_COMPLETE << 8; 659 done(cmd); 660 return 0; 661 } 662 default: 663 break; 664 } 665 666 cmd->scsi_done = done; 667 668 tag = cmd->request->tag; 669 670 if (unlikely(tag >= host->can_queue)) 671 return SCSI_MLQUEUE_HOST_BUSY; 672 673 req = hba->alloc_rq(hba); 674 675 req->lun = lun; 676 req->target = id; 677 678 /* cdb */ 679 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH); 680 681 if (cmd->sc_data_direction == DMA_FROM_DEVICE) 682 req->data_dir = MSG_DATA_DIR_IN; 683 else if (cmd->sc_data_direction == DMA_TO_DEVICE) 684 req->data_dir = MSG_DATA_DIR_OUT; 685 else 686 req->data_dir = MSG_DATA_DIR_ND; 687 688 hba->ccb[tag].cmd = cmd; 689 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE; 690 hba->ccb[tag].sense_buffer = cmd->sense_buffer; 691 692 if (!hba->map_sg(hba, req, &hba->ccb[tag])) { 693 hba->ccb[tag].sg_count = 0; 694 memset(&req->variable[0], 0, 8); 695 } 696 697 hba->send(hba, req, tag); 698 return 0; 699 } 700 701 static DEF_SCSI_QCMD(stex_queuecommand) 702 703 static void stex_scsi_done(struct st_ccb *ccb) 704 { 705 struct scsi_cmnd *cmd = ccb->cmd; 706 int result; 707 708 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) { 709 result = ccb->scsi_status; 710 switch (ccb->scsi_status) { 711 case SAM_STAT_GOOD: 712 result |= DID_OK << 16 | COMMAND_COMPLETE << 8; 713 break; 714 case SAM_STAT_CHECK_CONDITION: 715 result |= DRIVER_SENSE << 24; 716 break; 717 case SAM_STAT_BUSY: 718 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8; 719 break; 720 default: 721 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8; 722 break; 723 } 724 } 725 else if (ccb->srb_status & SRB_SEE_SENSE) 726 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION; 727 else switch (ccb->srb_status) { 728 case SRB_STATUS_SELECTION_TIMEOUT: 729 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8; 730 break; 731 case SRB_STATUS_BUSY: 732 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8; 733 break; 734 case SRB_STATUS_INVALID_REQUEST: 735 case SRB_STATUS_ERROR: 736 default: 737 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8; 738 break; 739 } 740 741 cmd->result = result; 742 cmd->scsi_done(cmd); 743 } 744 745 static void stex_copy_data(struct st_ccb *ccb, 746 struct status_msg *resp, unsigned int variable) 747 { 748 if (resp->scsi_status != SAM_STAT_GOOD) { 749 if (ccb->sense_buffer != NULL) 750 memcpy(ccb->sense_buffer, resp->variable, 751 min(variable, ccb->sense_bufflen)); 752 return; 753 } 754 755 if (ccb->cmd == NULL) 756 return; 757 scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, variable); 758 } 759 760 static void stex_check_cmd(struct st_hba *hba, 761 struct st_ccb *ccb, struct status_msg *resp) 762 { 763 if (ccb->cmd->cmnd[0] == MGT_CMD && 764 resp->scsi_status != SAM_STAT_CHECK_CONDITION) 765 scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) - 766 le32_to_cpu(*(__le32 *)&resp->variable[0])); 767 } 768 769 static void stex_mu_intr(struct st_hba *hba, u32 doorbell) 770 { 771 void __iomem *base = hba->mmio_base; 772 struct status_msg *resp; 773 struct st_ccb *ccb; 774 unsigned int size; 775 u16 tag; 776 777 if (unlikely(!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED))) 778 return; 779 780 /* status payloads */ 781 hba->status_head = readl(base + OMR1); 782 if (unlikely(hba->status_head > hba->sts_count)) { 783 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n", 784 pci_name(hba->pdev)); 785 return; 786 } 787 788 /* 789 * it's not a valid status payload if: 790 * 1. there are no pending requests(e.g. during init stage) 791 * 2. there are some pending requests, but the controller is in 792 * reset status, and its type is not st_yosemite 793 * firmware of st_yosemite in reset status will return pending requests 794 * to driver, so we allow it to pass 795 */ 796 if (unlikely(hba->out_req_cnt <= 0 || 797 (hba->mu_status == MU_STATE_RESETTING && 798 hba->cardtype != st_yosemite))) { 799 hba->status_tail = hba->status_head; 800 goto update_status; 801 } 802 803 while (hba->status_tail != hba->status_head) { 804 resp = stex_get_status(hba); 805 tag = le16_to_cpu(resp->tag); 806 if (unlikely(tag >= hba->host->can_queue)) { 807 printk(KERN_WARNING DRV_NAME 808 "(%s): invalid tag\n", pci_name(hba->pdev)); 809 continue; 810 } 811 812 hba->out_req_cnt--; 813 ccb = &hba->ccb[tag]; 814 if (unlikely(hba->wait_ccb == ccb)) 815 hba->wait_ccb = NULL; 816 if (unlikely(ccb->req == NULL)) { 817 printk(KERN_WARNING DRV_NAME 818 "(%s): lagging req\n", pci_name(hba->pdev)); 819 continue; 820 } 821 822 size = resp->payload_sz * sizeof(u32); /* payload size */ 823 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN || 824 size > sizeof(*resp))) { 825 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n", 826 pci_name(hba->pdev)); 827 } else { 828 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */ 829 if (size) 830 stex_copy_data(ccb, resp, size); 831 } 832 833 ccb->req = NULL; 834 ccb->srb_status = resp->srb_status; 835 ccb->scsi_status = resp->scsi_status; 836 837 if (likely(ccb->cmd != NULL)) { 838 if (hba->cardtype == st_yosemite) 839 stex_check_cmd(hba, ccb, resp); 840 841 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD && 842 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER)) 843 stex_controller_info(hba, ccb); 844 845 scsi_dma_unmap(ccb->cmd); 846 stex_scsi_done(ccb); 847 } else 848 ccb->req_type = 0; 849 } 850 851 update_status: 852 writel(hba->status_head, base + IMR1); 853 readl(base + IMR1); /* flush */ 854 } 855 856 static irqreturn_t stex_intr(int irq, void *__hba) 857 { 858 struct st_hba *hba = __hba; 859 void __iomem *base = hba->mmio_base; 860 u32 data; 861 unsigned long flags; 862 863 spin_lock_irqsave(hba->host->host_lock, flags); 864 865 data = readl(base + ODBL); 866 867 if (data && data != 0xffffffff) { 868 /* clear the interrupt */ 869 writel(data, base + ODBL); 870 readl(base + ODBL); /* flush */ 871 stex_mu_intr(hba, data); 872 spin_unlock_irqrestore(hba->host->host_lock, flags); 873 if (unlikely(data & MU_OUTBOUND_DOORBELL_REQUEST_RESET && 874 hba->cardtype == st_shasta)) 875 queue_work(hba->work_q, &hba->reset_work); 876 return IRQ_HANDLED; 877 } 878 879 spin_unlock_irqrestore(hba->host->host_lock, flags); 880 881 return IRQ_NONE; 882 } 883 884 static void stex_ss_mu_intr(struct st_hba *hba) 885 { 886 struct status_msg *resp; 887 struct st_ccb *ccb; 888 __le32 *scratch; 889 unsigned int size; 890 int count = 0; 891 u32 value; 892 u16 tag; 893 894 if (unlikely(hba->out_req_cnt <= 0 || 895 hba->mu_status == MU_STATE_RESETTING)) 896 return; 897 898 while (count < hba->sts_count) { 899 scratch = hba->scratch + hba->status_tail; 900 value = le32_to_cpu(*scratch); 901 if (unlikely(!(value & SS_STS_NORMAL))) 902 return; 903 904 resp = hba->status_buffer + hba->status_tail; 905 *scratch = 0; 906 ++count; 907 ++hba->status_tail; 908 hba->status_tail %= hba->sts_count+1; 909 910 tag = (u16)value; 911 if (unlikely(tag >= hba->host->can_queue)) { 912 printk(KERN_WARNING DRV_NAME 913 "(%s): invalid tag\n", pci_name(hba->pdev)); 914 continue; 915 } 916 917 hba->out_req_cnt--; 918 ccb = &hba->ccb[tag]; 919 if (unlikely(hba->wait_ccb == ccb)) 920 hba->wait_ccb = NULL; 921 if (unlikely(ccb->req == NULL)) { 922 printk(KERN_WARNING DRV_NAME 923 "(%s): lagging req\n", pci_name(hba->pdev)); 924 continue; 925 } 926 927 ccb->req = NULL; 928 if (likely(value & SS_STS_DONE)) { /* normal case */ 929 ccb->srb_status = SRB_STATUS_SUCCESS; 930 ccb->scsi_status = SAM_STAT_GOOD; 931 } else { 932 ccb->srb_status = resp->srb_status; 933 ccb->scsi_status = resp->scsi_status; 934 size = resp->payload_sz * sizeof(u32); 935 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN || 936 size > sizeof(*resp))) { 937 printk(KERN_WARNING DRV_NAME 938 "(%s): bad status size\n", 939 pci_name(hba->pdev)); 940 } else { 941 size -= sizeof(*resp) - STATUS_VAR_LEN; 942 if (size) 943 stex_copy_data(ccb, resp, size); 944 } 945 if (likely(ccb->cmd != NULL)) 946 stex_check_cmd(hba, ccb, resp); 947 } 948 949 if (likely(ccb->cmd != NULL)) { 950 scsi_dma_unmap(ccb->cmd); 951 stex_scsi_done(ccb); 952 } else 953 ccb->req_type = 0; 954 } 955 } 956 957 static irqreturn_t stex_ss_intr(int irq, void *__hba) 958 { 959 struct st_hba *hba = __hba; 960 void __iomem *base = hba->mmio_base; 961 u32 data; 962 unsigned long flags; 963 964 spin_lock_irqsave(hba->host->host_lock, flags); 965 966 data = readl(base + YI2H_INT); 967 if (data && data != 0xffffffff) { 968 /* clear the interrupt */ 969 writel(data, base + YI2H_INT_C); 970 stex_ss_mu_intr(hba); 971 spin_unlock_irqrestore(hba->host->host_lock, flags); 972 if (unlikely(data & SS_I2H_REQUEST_RESET)) 973 queue_work(hba->work_q, &hba->reset_work); 974 return IRQ_HANDLED; 975 } 976 977 spin_unlock_irqrestore(hba->host->host_lock, flags); 978 979 return IRQ_NONE; 980 } 981 982 static int stex_common_handshake(struct st_hba *hba) 983 { 984 void __iomem *base = hba->mmio_base; 985 struct handshake_frame *h; 986 dma_addr_t status_phys; 987 u32 data; 988 unsigned long before; 989 990 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { 991 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL); 992 readl(base + IDBL); 993 before = jiffies; 994 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { 995 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 996 printk(KERN_ERR DRV_NAME 997 "(%s): no handshake signature\n", 998 pci_name(hba->pdev)); 999 return -1; 1000 } 1001 rmb(); 1002 msleep(1); 1003 } 1004 } 1005 1006 udelay(10); 1007 1008 data = readl(base + OMR1); 1009 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) { 1010 data &= 0x0000ffff; 1011 if (hba->host->can_queue > data) { 1012 hba->host->can_queue = data; 1013 hba->host->cmd_per_lun = data; 1014 } 1015 } 1016 1017 h = (struct handshake_frame *)hba->status_buffer; 1018 h->rb_phy = cpu_to_le64(hba->dma_handle); 1019 h->req_sz = cpu_to_le16(hba->rq_size); 1020 h->req_cnt = cpu_to_le16(hba->rq_count+1); 1021 h->status_sz = cpu_to_le16(sizeof(struct status_msg)); 1022 h->status_cnt = cpu_to_le16(hba->sts_count+1); 1023 stex_gettime(&h->hosttime); 1024 h->partner_type = HMU_PARTNER_TYPE; 1025 if (hba->extra_offset) { 1026 h->extra_offset = cpu_to_le32(hba->extra_offset); 1027 h->extra_size = cpu_to_le32(hba->dma_size - hba->extra_offset); 1028 } else 1029 h->extra_offset = h->extra_size = 0; 1030 1031 status_phys = hba->dma_handle + (hba->rq_count+1) * hba->rq_size; 1032 writel(status_phys, base + IMR0); 1033 readl(base + IMR0); 1034 writel((status_phys >> 16) >> 16, base + IMR1); 1035 readl(base + IMR1); 1036 1037 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */ 1038 readl(base + OMR0); 1039 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL); 1040 readl(base + IDBL); /* flush */ 1041 1042 udelay(10); 1043 before = jiffies; 1044 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { 1045 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 1046 printk(KERN_ERR DRV_NAME 1047 "(%s): no signature after handshake frame\n", 1048 pci_name(hba->pdev)); 1049 return -1; 1050 } 1051 rmb(); 1052 msleep(1); 1053 } 1054 1055 writel(0, base + IMR0); 1056 readl(base + IMR0); 1057 writel(0, base + OMR0); 1058 readl(base + OMR0); 1059 writel(0, base + IMR1); 1060 readl(base + IMR1); 1061 writel(0, base + OMR1); 1062 readl(base + OMR1); /* flush */ 1063 return 0; 1064 } 1065 1066 static int stex_ss_handshake(struct st_hba *hba) 1067 { 1068 void __iomem *base = hba->mmio_base; 1069 struct st_msg_header *msg_h; 1070 struct handshake_frame *h; 1071 __le32 *scratch; 1072 u32 data, scratch_size; 1073 unsigned long before; 1074 int ret = 0; 1075 1076 before = jiffies; 1077 while ((readl(base + YIOA_STATUS) & SS_MU_OPERATIONAL) == 0) { 1078 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 1079 printk(KERN_ERR DRV_NAME 1080 "(%s): firmware not operational\n", 1081 pci_name(hba->pdev)); 1082 return -1; 1083 } 1084 msleep(1); 1085 } 1086 1087 msg_h = (struct st_msg_header *)hba->dma_mem; 1088 msg_h->handle = cpu_to_le64(hba->dma_handle); 1089 msg_h->flag = SS_HEAD_HANDSHAKE; 1090 1091 h = (struct handshake_frame *)(msg_h + 1); 1092 h->rb_phy = cpu_to_le64(hba->dma_handle); 1093 h->req_sz = cpu_to_le16(hba->rq_size); 1094 h->req_cnt = cpu_to_le16(hba->rq_count+1); 1095 h->status_sz = cpu_to_le16(sizeof(struct status_msg)); 1096 h->status_cnt = cpu_to_le16(hba->sts_count+1); 1097 stex_gettime(&h->hosttime); 1098 h->partner_type = HMU_PARTNER_TYPE; 1099 h->extra_offset = h->extra_size = 0; 1100 scratch_size = (hba->sts_count+1)*sizeof(u32); 1101 h->scratch_size = cpu_to_le32(scratch_size); 1102 1103 data = readl(base + YINT_EN); 1104 data &= ~4; 1105 writel(data, base + YINT_EN); 1106 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI); 1107 readl(base + YH2I_REQ_HI); 1108 writel(hba->dma_handle, base + YH2I_REQ); 1109 readl(base + YH2I_REQ); /* flush */ 1110 1111 scratch = hba->scratch; 1112 before = jiffies; 1113 while (!(le32_to_cpu(*scratch) & SS_STS_HANDSHAKE)) { 1114 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { 1115 printk(KERN_ERR DRV_NAME 1116 "(%s): no signature after handshake frame\n", 1117 pci_name(hba->pdev)); 1118 ret = -1; 1119 break; 1120 } 1121 rmb(); 1122 msleep(1); 1123 } 1124 1125 memset(scratch, 0, scratch_size); 1126 msg_h->flag = 0; 1127 return ret; 1128 } 1129 1130 static int stex_handshake(struct st_hba *hba) 1131 { 1132 int err; 1133 unsigned long flags; 1134 unsigned int mu_status; 1135 1136 err = (hba->cardtype == st_yel) ? 1137 stex_ss_handshake(hba) : stex_common_handshake(hba); 1138 spin_lock_irqsave(hba->host->host_lock, flags); 1139 mu_status = hba->mu_status; 1140 if (err == 0) { 1141 hba->req_head = 0; 1142 hba->req_tail = 0; 1143 hba->status_head = 0; 1144 hba->status_tail = 0; 1145 hba->out_req_cnt = 0; 1146 hba->mu_status = MU_STATE_STARTED; 1147 } else 1148 hba->mu_status = MU_STATE_FAILED; 1149 if (mu_status == MU_STATE_RESETTING) 1150 wake_up_all(&hba->reset_waitq); 1151 spin_unlock_irqrestore(hba->host->host_lock, flags); 1152 return err; 1153 } 1154 1155 static int stex_abort(struct scsi_cmnd *cmd) 1156 { 1157 struct Scsi_Host *host = cmd->device->host; 1158 struct st_hba *hba = (struct st_hba *)host->hostdata; 1159 u16 tag = cmd->request->tag; 1160 void __iomem *base; 1161 u32 data; 1162 int result = SUCCESS; 1163 unsigned long flags; 1164 1165 printk(KERN_INFO DRV_NAME 1166 "(%s): aborting command\n", pci_name(hba->pdev)); 1167 scsi_print_command(cmd); 1168 1169 base = hba->mmio_base; 1170 spin_lock_irqsave(host->host_lock, flags); 1171 if (tag < host->can_queue && 1172 hba->ccb[tag].req && hba->ccb[tag].cmd == cmd) 1173 hba->wait_ccb = &hba->ccb[tag]; 1174 else 1175 goto out; 1176 1177 if (hba->cardtype == st_yel) { 1178 data = readl(base + YI2H_INT); 1179 if (data == 0 || data == 0xffffffff) 1180 goto fail_out; 1181 1182 writel(data, base + YI2H_INT_C); 1183 stex_ss_mu_intr(hba); 1184 } else { 1185 data = readl(base + ODBL); 1186 if (data == 0 || data == 0xffffffff) 1187 goto fail_out; 1188 1189 writel(data, base + ODBL); 1190 readl(base + ODBL); /* flush */ 1191 1192 stex_mu_intr(hba, data); 1193 } 1194 if (hba->wait_ccb == NULL) { 1195 printk(KERN_WARNING DRV_NAME 1196 "(%s): lost interrupt\n", pci_name(hba->pdev)); 1197 goto out; 1198 } 1199 1200 fail_out: 1201 scsi_dma_unmap(cmd); 1202 hba->wait_ccb->req = NULL; /* nullify the req's future return */ 1203 hba->wait_ccb = NULL; 1204 result = FAILED; 1205 out: 1206 spin_unlock_irqrestore(host->host_lock, flags); 1207 return result; 1208 } 1209 1210 static void stex_hard_reset(struct st_hba *hba) 1211 { 1212 struct pci_bus *bus; 1213 int i; 1214 u16 pci_cmd; 1215 u8 pci_bctl; 1216 1217 for (i = 0; i < 16; i++) 1218 pci_read_config_dword(hba->pdev, i * 4, 1219 &hba->pdev->saved_config_space[i]); 1220 1221 /* Reset secondary bus. Our controller(MU/ATU) is the only device on 1222 secondary bus. Consult Intel 80331/3 developer's manual for detail */ 1223 bus = hba->pdev->bus; 1224 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl); 1225 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET; 1226 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl); 1227 1228 /* 1229 * 1 ms may be enough for 8-port controllers. But 16-port controllers 1230 * require more time to finish bus reset. Use 100 ms here for safety 1231 */ 1232 msleep(100); 1233 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET; 1234 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl); 1235 1236 for (i = 0; i < MU_HARD_RESET_WAIT; i++) { 1237 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd); 1238 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER)) 1239 break; 1240 msleep(1); 1241 } 1242 1243 ssleep(5); 1244 for (i = 0; i < 16; i++) 1245 pci_write_config_dword(hba->pdev, i * 4, 1246 hba->pdev->saved_config_space[i]); 1247 } 1248 1249 static int stex_yos_reset(struct st_hba *hba) 1250 { 1251 void __iomem *base; 1252 unsigned long flags, before; 1253 int ret = 0; 1254 1255 base = hba->mmio_base; 1256 writel(MU_INBOUND_DOORBELL_RESET, base + IDBL); 1257 readl(base + IDBL); /* flush */ 1258 before = jiffies; 1259 while (hba->out_req_cnt > 0) { 1260 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) { 1261 printk(KERN_WARNING DRV_NAME 1262 "(%s): reset timeout\n", pci_name(hba->pdev)); 1263 ret = -1; 1264 break; 1265 } 1266 msleep(1); 1267 } 1268 1269 spin_lock_irqsave(hba->host->host_lock, flags); 1270 if (ret == -1) 1271 hba->mu_status = MU_STATE_FAILED; 1272 else 1273 hba->mu_status = MU_STATE_STARTED; 1274 wake_up_all(&hba->reset_waitq); 1275 spin_unlock_irqrestore(hba->host->host_lock, flags); 1276 1277 return ret; 1278 } 1279 1280 static void stex_ss_reset(struct st_hba *hba) 1281 { 1282 writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT); 1283 readl(hba->mmio_base + YH2I_INT); 1284 ssleep(5); 1285 } 1286 1287 static int stex_do_reset(struct st_hba *hba) 1288 { 1289 struct st_ccb *ccb; 1290 unsigned long flags; 1291 unsigned int mu_status = MU_STATE_RESETTING; 1292 u16 tag; 1293 1294 spin_lock_irqsave(hba->host->host_lock, flags); 1295 if (hba->mu_status == MU_STATE_STARTING) { 1296 spin_unlock_irqrestore(hba->host->host_lock, flags); 1297 printk(KERN_INFO DRV_NAME "(%s): request reset during init\n", 1298 pci_name(hba->pdev)); 1299 return 0; 1300 } 1301 while (hba->mu_status == MU_STATE_RESETTING) { 1302 spin_unlock_irqrestore(hba->host->host_lock, flags); 1303 wait_event_timeout(hba->reset_waitq, 1304 hba->mu_status != MU_STATE_RESETTING, 1305 MU_MAX_DELAY * HZ); 1306 spin_lock_irqsave(hba->host->host_lock, flags); 1307 mu_status = hba->mu_status; 1308 } 1309 1310 if (mu_status != MU_STATE_RESETTING) { 1311 spin_unlock_irqrestore(hba->host->host_lock, flags); 1312 return (mu_status == MU_STATE_STARTED) ? 0 : -1; 1313 } 1314 1315 hba->mu_status = MU_STATE_RESETTING; 1316 spin_unlock_irqrestore(hba->host->host_lock, flags); 1317 1318 if (hba->cardtype == st_yosemite) 1319 return stex_yos_reset(hba); 1320 1321 if (hba->cardtype == st_shasta) 1322 stex_hard_reset(hba); 1323 else if (hba->cardtype == st_yel) 1324 stex_ss_reset(hba); 1325 1326 spin_lock_irqsave(hba->host->host_lock, flags); 1327 for (tag = 0; tag < hba->host->can_queue; tag++) { 1328 ccb = &hba->ccb[tag]; 1329 if (ccb->req == NULL) 1330 continue; 1331 ccb->req = NULL; 1332 if (ccb->cmd) { 1333 scsi_dma_unmap(ccb->cmd); 1334 ccb->cmd->result = DID_RESET << 16; 1335 ccb->cmd->scsi_done(ccb->cmd); 1336 ccb->cmd = NULL; 1337 } 1338 } 1339 spin_unlock_irqrestore(hba->host->host_lock, flags); 1340 1341 if (stex_handshake(hba) == 0) 1342 return 0; 1343 1344 printk(KERN_WARNING DRV_NAME "(%s): resetting: handshake failed\n", 1345 pci_name(hba->pdev)); 1346 return -1; 1347 } 1348 1349 static int stex_reset(struct scsi_cmnd *cmd) 1350 { 1351 struct st_hba *hba; 1352 1353 hba = (struct st_hba *) &cmd->device->host->hostdata[0]; 1354 1355 printk(KERN_INFO DRV_NAME 1356 "(%s): resetting host\n", pci_name(hba->pdev)); 1357 scsi_print_command(cmd); 1358 1359 return stex_do_reset(hba) ? FAILED : SUCCESS; 1360 } 1361 1362 static void stex_reset_work(struct work_struct *work) 1363 { 1364 struct st_hba *hba = container_of(work, struct st_hba, reset_work); 1365 1366 stex_do_reset(hba); 1367 } 1368 1369 static int stex_biosparam(struct scsi_device *sdev, 1370 struct block_device *bdev, sector_t capacity, int geom[]) 1371 { 1372 int heads = 255, sectors = 63; 1373 1374 if (capacity < 0x200000) { 1375 heads = 64; 1376 sectors = 32; 1377 } 1378 1379 sector_div(capacity, heads * sectors); 1380 1381 geom[0] = heads; 1382 geom[1] = sectors; 1383 geom[2] = capacity; 1384 1385 return 0; 1386 } 1387 1388 static struct scsi_host_template driver_template = { 1389 .module = THIS_MODULE, 1390 .name = DRV_NAME, 1391 .proc_name = DRV_NAME, 1392 .bios_param = stex_biosparam, 1393 .queuecommand = stex_queuecommand, 1394 .slave_alloc = stex_slave_alloc, 1395 .slave_configure = stex_slave_config, 1396 .slave_destroy = stex_slave_destroy, 1397 .eh_abort_handler = stex_abort, 1398 .eh_host_reset_handler = stex_reset, 1399 .this_id = -1, 1400 }; 1401 1402 static struct pci_device_id stex_pci_tbl[] = { 1403 /* st_shasta */ 1404 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1405 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */ 1406 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1407 st_shasta }, /* SuperTrak EX12350 */ 1408 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1409 st_shasta }, /* SuperTrak EX4350 */ 1410 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1411 st_shasta }, /* SuperTrak EX24350 */ 1412 1413 /* st_vsc */ 1414 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc }, 1415 1416 /* st_yosemite */ 1417 { 0x105a, 0x8650, 0x105a, PCI_ANY_ID, 0, 0, st_yosemite }, 1418 1419 /* st_seq */ 1420 { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq }, 1421 1422 /* st_yel */ 1423 { 0x105a, 0x8650, 0x1033, PCI_ANY_ID, 0, 0, st_yel }, 1424 { 0x105a, 0x8760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yel }, 1425 { } /* terminate list */ 1426 }; 1427 1428 static struct st_card_info stex_card_info[] = { 1429 /* st_shasta */ 1430 { 1431 .max_id = 17, 1432 .max_lun = 8, 1433 .max_channel = 0, 1434 .rq_count = 32, 1435 .rq_size = 1048, 1436 .sts_count = 32, 1437 .alloc_rq = stex_alloc_req, 1438 .map_sg = stex_map_sg, 1439 .send = stex_send_cmd, 1440 }, 1441 1442 /* st_vsc */ 1443 { 1444 .max_id = 129, 1445 .max_lun = 1, 1446 .max_channel = 0, 1447 .rq_count = 32, 1448 .rq_size = 1048, 1449 .sts_count = 32, 1450 .alloc_rq = stex_alloc_req, 1451 .map_sg = stex_map_sg, 1452 .send = stex_send_cmd, 1453 }, 1454 1455 /* st_yosemite */ 1456 { 1457 .max_id = 2, 1458 .max_lun = 256, 1459 .max_channel = 0, 1460 .rq_count = 256, 1461 .rq_size = 1048, 1462 .sts_count = 256, 1463 .alloc_rq = stex_alloc_req, 1464 .map_sg = stex_map_sg, 1465 .send = stex_send_cmd, 1466 }, 1467 1468 /* st_seq */ 1469 { 1470 .max_id = 129, 1471 .max_lun = 1, 1472 .max_channel = 0, 1473 .rq_count = 32, 1474 .rq_size = 1048, 1475 .sts_count = 32, 1476 .alloc_rq = stex_alloc_req, 1477 .map_sg = stex_map_sg, 1478 .send = stex_send_cmd, 1479 }, 1480 1481 /* st_yel */ 1482 { 1483 .max_id = 129, 1484 .max_lun = 256, 1485 .max_channel = 3, 1486 .rq_count = 801, 1487 .rq_size = 512, 1488 .sts_count = 801, 1489 .alloc_rq = stex_ss_alloc_req, 1490 .map_sg = stex_ss_map_sg, 1491 .send = stex_ss_send_cmd, 1492 }, 1493 }; 1494 1495 static int stex_set_dma_mask(struct pci_dev * pdev) 1496 { 1497 int ret; 1498 1499 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) 1500 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) 1501 return 0; 1502 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 1503 if (!ret) 1504 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 1505 return ret; 1506 } 1507 1508 static int stex_request_irq(struct st_hba *hba) 1509 { 1510 struct pci_dev *pdev = hba->pdev; 1511 int status; 1512 1513 if (msi) { 1514 status = pci_enable_msi(pdev); 1515 if (status != 0) 1516 printk(KERN_ERR DRV_NAME 1517 "(%s): error %d setting up MSI\n", 1518 pci_name(pdev), status); 1519 else 1520 hba->msi_enabled = 1; 1521 } else 1522 hba->msi_enabled = 0; 1523 1524 status = request_irq(pdev->irq, hba->cardtype == st_yel ? 1525 stex_ss_intr : stex_intr, IRQF_SHARED, DRV_NAME, hba); 1526 1527 if (status != 0) { 1528 if (hba->msi_enabled) 1529 pci_disable_msi(pdev); 1530 } 1531 return status; 1532 } 1533 1534 static void stex_free_irq(struct st_hba *hba) 1535 { 1536 struct pci_dev *pdev = hba->pdev; 1537 1538 free_irq(pdev->irq, hba); 1539 if (hba->msi_enabled) 1540 pci_disable_msi(pdev); 1541 } 1542 1543 static int stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) 1544 { 1545 struct st_hba *hba; 1546 struct Scsi_Host *host; 1547 const struct st_card_info *ci = NULL; 1548 u32 sts_offset, cp_offset, scratch_offset; 1549 int err; 1550 1551 err = pci_enable_device(pdev); 1552 if (err) 1553 return err; 1554 1555 pci_set_master(pdev); 1556 1557 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba)); 1558 1559 if (!host) { 1560 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n", 1561 pci_name(pdev)); 1562 err = -ENOMEM; 1563 goto out_disable; 1564 } 1565 1566 hba = (struct st_hba *)host->hostdata; 1567 memset(hba, 0, sizeof(struct st_hba)); 1568 1569 err = pci_request_regions(pdev, DRV_NAME); 1570 if (err < 0) { 1571 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n", 1572 pci_name(pdev)); 1573 goto out_scsi_host_put; 1574 } 1575 1576 hba->mmio_base = pci_ioremap_bar(pdev, 0); 1577 if ( !hba->mmio_base) { 1578 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n", 1579 pci_name(pdev)); 1580 err = -ENOMEM; 1581 goto out_release_regions; 1582 } 1583 1584 err = stex_set_dma_mask(pdev); 1585 if (err) { 1586 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n", 1587 pci_name(pdev)); 1588 goto out_iounmap; 1589 } 1590 1591 hba->cardtype = (unsigned int) id->driver_data; 1592 ci = &stex_card_info[hba->cardtype]; 1593 sts_offset = scratch_offset = (ci->rq_count+1) * ci->rq_size; 1594 if (hba->cardtype == st_yel) 1595 sts_offset += (ci->sts_count+1) * sizeof(u32); 1596 cp_offset = sts_offset + (ci->sts_count+1) * sizeof(struct status_msg); 1597 hba->dma_size = cp_offset + sizeof(struct st_frame); 1598 if (hba->cardtype == st_seq || 1599 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) { 1600 hba->extra_offset = hba->dma_size; 1601 hba->dma_size += ST_ADDITIONAL_MEM; 1602 } 1603 hba->dma_mem = dma_alloc_coherent(&pdev->dev, 1604 hba->dma_size, &hba->dma_handle, GFP_KERNEL); 1605 if (!hba->dma_mem) { 1606 /* Retry minimum coherent mapping for st_seq and st_vsc */ 1607 if (hba->cardtype == st_seq || 1608 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) { 1609 printk(KERN_WARNING DRV_NAME 1610 "(%s): allocating min buffer for controller\n", 1611 pci_name(pdev)); 1612 hba->dma_size = hba->extra_offset 1613 + ST_ADDITIONAL_MEM_MIN; 1614 hba->dma_mem = dma_alloc_coherent(&pdev->dev, 1615 hba->dma_size, &hba->dma_handle, GFP_KERNEL); 1616 } 1617 1618 if (!hba->dma_mem) { 1619 err = -ENOMEM; 1620 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n", 1621 pci_name(pdev)); 1622 goto out_iounmap; 1623 } 1624 } 1625 1626 hba->ccb = kcalloc(ci->rq_count, sizeof(struct st_ccb), GFP_KERNEL); 1627 if (!hba->ccb) { 1628 err = -ENOMEM; 1629 printk(KERN_ERR DRV_NAME "(%s): ccb alloc failed\n", 1630 pci_name(pdev)); 1631 goto out_pci_free; 1632 } 1633 1634 if (hba->cardtype == st_yel) 1635 hba->scratch = (__le32 *)(hba->dma_mem + scratch_offset); 1636 hba->status_buffer = (struct status_msg *)(hba->dma_mem + sts_offset); 1637 hba->copy_buffer = hba->dma_mem + cp_offset; 1638 hba->rq_count = ci->rq_count; 1639 hba->rq_size = ci->rq_size; 1640 hba->sts_count = ci->sts_count; 1641 hba->alloc_rq = ci->alloc_rq; 1642 hba->map_sg = ci->map_sg; 1643 hba->send = ci->send; 1644 hba->mu_status = MU_STATE_STARTING; 1645 1646 if (hba->cardtype == st_yel) 1647 host->sg_tablesize = 38; 1648 else 1649 host->sg_tablesize = 32; 1650 host->can_queue = ci->rq_count; 1651 host->cmd_per_lun = ci->rq_count; 1652 host->max_id = ci->max_id; 1653 host->max_lun = ci->max_lun; 1654 host->max_channel = ci->max_channel; 1655 host->unique_id = host->host_no; 1656 host->max_cmd_len = STEX_CDB_LENGTH; 1657 1658 hba->host = host; 1659 hba->pdev = pdev; 1660 init_waitqueue_head(&hba->reset_waitq); 1661 1662 snprintf(hba->work_q_name, sizeof(hba->work_q_name), 1663 "stex_wq_%d", host->host_no); 1664 hba->work_q = create_singlethread_workqueue(hba->work_q_name); 1665 if (!hba->work_q) { 1666 printk(KERN_ERR DRV_NAME "(%s): create workqueue failed\n", 1667 pci_name(pdev)); 1668 err = -ENOMEM; 1669 goto out_ccb_free; 1670 } 1671 INIT_WORK(&hba->reset_work, stex_reset_work); 1672 1673 err = stex_request_irq(hba); 1674 if (err) { 1675 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n", 1676 pci_name(pdev)); 1677 goto out_free_wq; 1678 } 1679 1680 err = stex_handshake(hba); 1681 if (err) 1682 goto out_free_irq; 1683 1684 err = scsi_init_shared_tag_map(host, host->can_queue); 1685 if (err) { 1686 printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n", 1687 pci_name(pdev)); 1688 goto out_free_irq; 1689 } 1690 1691 pci_set_drvdata(pdev, hba); 1692 1693 err = scsi_add_host(host, &pdev->dev); 1694 if (err) { 1695 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n", 1696 pci_name(pdev)); 1697 goto out_free_irq; 1698 } 1699 1700 scsi_scan_host(host); 1701 1702 return 0; 1703 1704 out_free_irq: 1705 stex_free_irq(hba); 1706 out_free_wq: 1707 destroy_workqueue(hba->work_q); 1708 out_ccb_free: 1709 kfree(hba->ccb); 1710 out_pci_free: 1711 dma_free_coherent(&pdev->dev, hba->dma_size, 1712 hba->dma_mem, hba->dma_handle); 1713 out_iounmap: 1714 iounmap(hba->mmio_base); 1715 out_release_regions: 1716 pci_release_regions(pdev); 1717 out_scsi_host_put: 1718 scsi_host_put(host); 1719 out_disable: 1720 pci_disable_device(pdev); 1721 1722 return err; 1723 } 1724 1725 static void stex_hba_stop(struct st_hba *hba) 1726 { 1727 struct req_msg *req; 1728 struct st_msg_header *msg_h; 1729 unsigned long flags; 1730 unsigned long before; 1731 u16 tag = 0; 1732 1733 spin_lock_irqsave(hba->host->host_lock, flags); 1734 req = hba->alloc_rq(hba); 1735 if (hba->cardtype == st_yel) { 1736 msg_h = (struct st_msg_header *)req - 1; 1737 memset(msg_h, 0, hba->rq_size); 1738 } else 1739 memset(req, 0, hba->rq_size); 1740 1741 if (hba->cardtype == st_yosemite || hba->cardtype == st_yel) { 1742 req->cdb[0] = MGT_CMD; 1743 req->cdb[1] = MGT_CMD_SIGNATURE; 1744 req->cdb[2] = CTLR_CONFIG_CMD; 1745 req->cdb[3] = CTLR_SHUTDOWN; 1746 } else { 1747 req->cdb[0] = CONTROLLER_CMD; 1748 req->cdb[1] = CTLR_POWER_STATE_CHANGE; 1749 req->cdb[2] = CTLR_POWER_SAVING; 1750 } 1751 1752 hba->ccb[tag].cmd = NULL; 1753 hba->ccb[tag].sg_count = 0; 1754 hba->ccb[tag].sense_bufflen = 0; 1755 hba->ccb[tag].sense_buffer = NULL; 1756 hba->ccb[tag].req_type = PASSTHRU_REQ_TYPE; 1757 1758 hba->send(hba, req, tag); 1759 spin_unlock_irqrestore(hba->host->host_lock, flags); 1760 1761 before = jiffies; 1762 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) { 1763 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) { 1764 hba->ccb[tag].req_type = 0; 1765 return; 1766 } 1767 msleep(1); 1768 } 1769 } 1770 1771 static void stex_hba_free(struct st_hba *hba) 1772 { 1773 stex_free_irq(hba); 1774 1775 destroy_workqueue(hba->work_q); 1776 1777 iounmap(hba->mmio_base); 1778 1779 pci_release_regions(hba->pdev); 1780 1781 kfree(hba->ccb); 1782 1783 dma_free_coherent(&hba->pdev->dev, hba->dma_size, 1784 hba->dma_mem, hba->dma_handle); 1785 } 1786 1787 static void stex_remove(struct pci_dev *pdev) 1788 { 1789 struct st_hba *hba = pci_get_drvdata(pdev); 1790 1791 scsi_remove_host(hba->host); 1792 1793 stex_hba_stop(hba); 1794 1795 stex_hba_free(hba); 1796 1797 scsi_host_put(hba->host); 1798 1799 pci_disable_device(pdev); 1800 } 1801 1802 static void stex_shutdown(struct pci_dev *pdev) 1803 { 1804 struct st_hba *hba = pci_get_drvdata(pdev); 1805 1806 stex_hba_stop(hba); 1807 } 1808 1809 MODULE_DEVICE_TABLE(pci, stex_pci_tbl); 1810 1811 static struct pci_driver stex_pci_driver = { 1812 .name = DRV_NAME, 1813 .id_table = stex_pci_tbl, 1814 .probe = stex_probe, 1815 .remove = stex_remove, 1816 .shutdown = stex_shutdown, 1817 }; 1818 1819 static int __init stex_init(void) 1820 { 1821 printk(KERN_INFO DRV_NAME 1822 ": Promise SuperTrak EX Driver version: %s\n", 1823 ST_DRIVER_VERSION); 1824 1825 return pci_register_driver(&stex_pci_driver); 1826 } 1827 1828 static void __exit stex_exit(void) 1829 { 1830 pci_unregister_driver(&stex_pci_driver); 1831 } 1832 1833 module_init(stex_init); 1834 module_exit(stex_exit); 1835