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