1 /* 2 ******************************************************************************* 3 ** O.S : Linux 4 ** FILE NAME : arcmsr_hba.c 5 ** BY : Erich Chen 6 ** Description: SCSI RAID Device Driver for 7 ** ARECA RAID Host adapter 8 ******************************************************************************* 9 ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved 10 ** 11 ** Web site: www.areca.com.tw 12 ** E-mail: erich@areca.com.tw 13 ** 14 ** This program is free software; you can redistribute it and/or modify 15 ** it under the terms of the GNU General Public License version 2 as 16 ** published by the Free Software Foundation. 17 ** This program is distributed in the hope that it will be useful, 18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 ** GNU General Public License for more details. 21 ******************************************************************************* 22 ** Redistribution and use in source and binary forms, with or without 23 ** modification, are permitted provided that the following conditions 24 ** are met: 25 ** 1. Redistributions of source code must retain the above copyright 26 ** notice, this list of conditions and the following disclaimer. 27 ** 2. Redistributions in binary form must reproduce the above copyright 28 ** notice, this list of conditions and the following disclaimer in the 29 ** documentation and/or other materials provided with the distribution. 30 ** 3. The name of the author may not be used to endorse or promote products 31 ** derived from this software without specific prior written permission. 32 ** 33 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 34 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 35 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 36 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 37 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT 38 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 39 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY 40 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 41 ** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF 42 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 43 ******************************************************************************* 44 ** For history of changes, see Documentation/scsi/ChangeLog.arcmsr 45 ** Firmware Specification, see Documentation/scsi/arcmsr_spec.txt 46 ******************************************************************************* 47 */ 48 #include <linux/module.h> 49 #include <linux/reboot.h> 50 #include <linux/spinlock.h> 51 #include <linux/pci_ids.h> 52 #include <linux/interrupt.h> 53 #include <linux/moduleparam.h> 54 #include <linux/errno.h> 55 #include <linux/types.h> 56 #include <linux/delay.h> 57 #include <linux/dma-mapping.h> 58 #include <linux/timer.h> 59 #include <linux/pci.h> 60 #include <linux/aer.h> 61 #include <asm/dma.h> 62 #include <asm/io.h> 63 #include <asm/system.h> 64 #include <asm/uaccess.h> 65 #include <scsi/scsi_host.h> 66 #include <scsi/scsi.h> 67 #include <scsi/scsi_cmnd.h> 68 #include <scsi/scsi_tcq.h> 69 #include <scsi/scsi_device.h> 70 #include <scsi/scsi_transport.h> 71 #include <scsi/scsicam.h> 72 #include "arcmsr.h" 73 74 MODULE_AUTHOR("Erich Chen <erich@areca.com.tw>"); 75 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID HOST Adapter"); 76 MODULE_LICENSE("Dual BSD/GPL"); 77 MODULE_VERSION(ARCMSR_DRIVER_VERSION); 78 79 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd); 80 static int arcmsr_abort(struct scsi_cmnd *); 81 static int arcmsr_bus_reset(struct scsi_cmnd *); 82 static int arcmsr_bios_param(struct scsi_device *sdev, 83 struct block_device *bdev, sector_t capacity, int *info); 84 static int arcmsr_queue_command(struct scsi_cmnd * cmd, 85 void (*done) (struct scsi_cmnd *)); 86 static int arcmsr_probe(struct pci_dev *pdev, 87 const struct pci_device_id *id); 88 static void arcmsr_remove(struct pci_dev *pdev); 89 static void arcmsr_shutdown(struct pci_dev *pdev); 90 static void arcmsr_iop_init(struct AdapterControlBlock *acb); 91 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb); 92 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb); 93 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb); 94 static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb); 95 static const char *arcmsr_info(struct Scsi_Host *); 96 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb); 97 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 98 pci_channel_state_t state); 99 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev); 100 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth) 101 { 102 if (queue_depth > ARCMSR_MAX_CMD_PERLUN) 103 queue_depth = ARCMSR_MAX_CMD_PERLUN; 104 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); 105 return queue_depth; 106 } 107 108 static struct scsi_host_template arcmsr_scsi_host_template = { 109 .module = THIS_MODULE, 110 .name = "ARCMSR ARECA SATA/SAS RAID HOST Adapter" 111 ARCMSR_DRIVER_VERSION, 112 .info = arcmsr_info, 113 .queuecommand = arcmsr_queue_command, 114 .eh_abort_handler = arcmsr_abort, 115 .eh_bus_reset_handler = arcmsr_bus_reset, 116 .bios_param = arcmsr_bios_param, 117 .change_queue_depth = arcmsr_adjust_disk_queue_depth, 118 .can_queue = ARCMSR_MAX_OUTSTANDING_CMD, 119 .this_id = ARCMSR_SCSI_INITIATOR_ID, 120 .sg_tablesize = ARCMSR_MAX_SG_ENTRIES, 121 .max_sectors = ARCMSR_MAX_XFER_SECTORS, 122 .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN, 123 .use_clustering = ENABLE_CLUSTERING, 124 .shost_attrs = arcmsr_host_attrs, 125 }; 126 static struct pci_error_handlers arcmsr_pci_error_handlers = { 127 .error_detected = arcmsr_pci_error_detected, 128 .slot_reset = arcmsr_pci_slot_reset, 129 }; 130 131 static struct pci_device_id arcmsr_device_id_table[] = { 132 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)}, 133 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)}, 134 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)}, 135 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)}, 136 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)}, 137 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)}, 138 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)}, 139 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)}, 140 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)}, 141 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)}, 142 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)}, 143 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)}, 144 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)}, 145 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)}, 146 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)}, 147 {0, 0}, /* Terminating entry */ 148 }; 149 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table); 150 static struct pci_driver arcmsr_pci_driver = { 151 .name = "arcmsr", 152 .id_table = arcmsr_device_id_table, 153 .probe = arcmsr_probe, 154 .remove = arcmsr_remove, 155 .shutdown = arcmsr_shutdown, 156 .err_handler = &arcmsr_pci_error_handlers, 157 }; 158 159 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id) 160 { 161 irqreturn_t handle_state; 162 struct AdapterControlBlock *acb; 163 unsigned long flags; 164 165 acb = (struct AdapterControlBlock *)dev_id; 166 167 spin_lock_irqsave(acb->host->host_lock, flags); 168 handle_state = arcmsr_interrupt(acb); 169 spin_unlock_irqrestore(acb->host->host_lock, flags); 170 return handle_state; 171 } 172 173 static int arcmsr_bios_param(struct scsi_device *sdev, 174 struct block_device *bdev, sector_t capacity, int *geom) 175 { 176 int ret, heads, sectors, cylinders, total_capacity; 177 unsigned char *buffer;/* return copy of block device's partition table */ 178 179 buffer = scsi_bios_ptable(bdev); 180 if (buffer) { 181 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]); 182 kfree(buffer); 183 if (ret != -1) 184 return ret; 185 } 186 total_capacity = capacity; 187 heads = 64; 188 sectors = 32; 189 cylinders = total_capacity / (heads * sectors); 190 if (cylinders > 1024) { 191 heads = 255; 192 sectors = 63; 193 cylinders = total_capacity / (heads * sectors); 194 } 195 geom[0] = heads; 196 geom[1] = sectors; 197 geom[2] = cylinders; 198 return 0; 199 } 200 201 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb) 202 { 203 struct pci_dev *pdev = acb->pdev; 204 struct MessageUnit __iomem *reg = acb->pmu; 205 u32 ccb_phyaddr_hi32; 206 void *dma_coherent; 207 dma_addr_t dma_coherent_handle, dma_addr; 208 struct CommandControlBlock *ccb_tmp; 209 int i, j; 210 211 dma_coherent = dma_alloc_coherent(&pdev->dev, 212 ARCMSR_MAX_FREECCB_NUM * 213 sizeof (struct CommandControlBlock) + 0x20, 214 &dma_coherent_handle, GFP_KERNEL); 215 if (!dma_coherent) 216 return -ENOMEM; 217 218 acb->dma_coherent = dma_coherent; 219 acb->dma_coherent_handle = dma_coherent_handle; 220 221 if (((unsigned long)dma_coherent & 0x1F)) { 222 dma_coherent = dma_coherent + 223 (0x20 - ((unsigned long)dma_coherent & 0x1F)); 224 dma_coherent_handle = dma_coherent_handle + 225 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); 226 } 227 228 dma_addr = dma_coherent_handle; 229 ccb_tmp = (struct CommandControlBlock *)dma_coherent; 230 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 231 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; 232 ccb_tmp->acb = acb; 233 acb->pccb_pool[i] = ccb_tmp; 234 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); 235 dma_addr = dma_addr + sizeof (struct CommandControlBlock); 236 ccb_tmp++; 237 } 238 239 acb->vir2phy_offset = (unsigned long)ccb_tmp - 240 (unsigned long)dma_addr; 241 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 242 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 243 acb->devstate[i][j] = ARECA_RAID_GOOD; 244 245 /* 246 ** here we need to tell iop 331 our ccb_tmp.HighPart 247 ** if ccb_tmp.HighPart is not zero 248 */ 249 ccb_phyaddr_hi32 = (uint32_t) ((dma_coherent_handle >> 16) >> 16); 250 if (ccb_phyaddr_hi32 != 0) { 251 writel(ARCMSR_SIGNATURE_SET_CONFIG, ®->message_rwbuffer[0]); 252 writel(ccb_phyaddr_hi32, ®->message_rwbuffer[1]); 253 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, ®->inbound_msgaddr0); 254 if (arcmsr_wait_msgint_ready(acb)) 255 printk(KERN_NOTICE "arcmsr%d: " 256 "'set ccb high part physical address' timeout\n", 257 acb->host->host_no); 258 } 259 260 writel(readl(®->outbound_intmask) | 261 ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, 262 ®->outbound_intmask); 263 return 0; 264 } 265 266 static int arcmsr_probe(struct pci_dev *pdev, 267 const struct pci_device_id *id) 268 { 269 struct Scsi_Host *host; 270 struct AdapterControlBlock *acb; 271 uint8_t bus, dev_fun; 272 int error; 273 274 error = pci_enable_device(pdev); 275 if (error) 276 goto out; 277 pci_set_master(pdev); 278 279 host = scsi_host_alloc(&arcmsr_scsi_host_template, 280 sizeof(struct AdapterControlBlock)); 281 if (!host) { 282 error = -ENOMEM; 283 goto out_disable_device; 284 } 285 acb = (struct AdapterControlBlock *)host->hostdata; 286 memset(acb, 0, sizeof (struct AdapterControlBlock)); 287 288 error = pci_set_dma_mask(pdev, DMA_64BIT_MASK); 289 if (error) { 290 error = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 291 if (error) { 292 printk(KERN_WARNING 293 "scsi%d: No suitable DMA mask available\n", 294 host->host_no); 295 goto out_host_put; 296 } 297 } 298 bus = pdev->bus->number; 299 dev_fun = pdev->devfn; 300 acb->host = host; 301 acb->pdev = pdev; 302 host->max_sectors = ARCMSR_MAX_XFER_SECTORS; 303 host->max_lun = ARCMSR_MAX_TARGETLUN; 304 host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/ 305 host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/ 306 host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES; 307 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */ 308 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN; 309 host->this_id = ARCMSR_SCSI_INITIATOR_ID; 310 host->unique_id = (bus << 8) | dev_fun; 311 host->irq = pdev->irq; 312 error = pci_request_regions(pdev, "arcmsr"); 313 if (error) 314 goto out_host_put; 315 316 acb->pmu = ioremap(pci_resource_start(pdev, 0), 317 pci_resource_len(pdev, 0)); 318 if (!acb->pmu) { 319 printk(KERN_NOTICE "arcmsr%d: memory" 320 " mapping region fail \n", acb->host->host_no); 321 goto out_release_regions; 322 } 323 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 324 ACB_F_MESSAGE_RQBUFFER_CLEARED | 325 ACB_F_MESSAGE_WQBUFFER_READED); 326 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 327 INIT_LIST_HEAD(&acb->ccb_free_list); 328 329 error = arcmsr_alloc_ccb_pool(acb); 330 if (error) 331 goto out_iounmap; 332 333 error = request_irq(pdev->irq, arcmsr_do_interrupt, 334 IRQF_DISABLED | IRQF_SHARED, "arcmsr", acb); 335 if (error) 336 goto out_free_ccb_pool; 337 338 arcmsr_iop_init(acb); 339 pci_set_drvdata(pdev, host); 340 if (strncmp(acb->firm_version, "V1.42", 5) >= 0) 341 host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B; 342 343 error = scsi_add_host(host, &pdev->dev); 344 if (error) 345 goto out_free_irq; 346 347 error = arcmsr_alloc_sysfs_attr(acb); 348 if (error) 349 goto out_free_sysfs; 350 351 scsi_scan_host(host); 352 pci_enable_pcie_error_reporting(pdev); 353 return 0; 354 out_free_sysfs: 355 out_free_irq: 356 free_irq(pdev->irq, acb); 357 out_free_ccb_pool: 358 arcmsr_free_ccb_pool(acb); 359 out_iounmap: 360 iounmap(acb->pmu); 361 out_release_regions: 362 pci_release_regions(pdev); 363 out_host_put: 364 scsi_host_put(host); 365 out_disable_device: 366 pci_disable_device(pdev); 367 out: 368 return error; 369 } 370 371 static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb) 372 { 373 struct MessageUnit __iomem *reg = acb->pmu; 374 375 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0); 376 if (arcmsr_wait_msgint_ready(acb)) 377 printk(KERN_NOTICE 378 "arcmsr%d: wait 'abort all outstanding command' timeout \n" 379 , acb->host->host_no); 380 } 381 382 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb) 383 { 384 struct scsi_cmnd *pcmd = ccb->pcmd; 385 386 scsi_dma_unmap(pcmd); 387 } 388 389 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag) 390 { 391 struct AdapterControlBlock *acb = ccb->acb; 392 struct scsi_cmnd *pcmd = ccb->pcmd; 393 394 arcmsr_pci_unmap_dma(ccb); 395 if (stand_flag == 1) 396 atomic_dec(&acb->ccboutstandingcount); 397 ccb->startdone = ARCMSR_CCB_DONE; 398 ccb->ccb_flags = 0; 399 list_add_tail(&ccb->list, &acb->ccb_free_list); 400 pcmd->scsi_done(pcmd); 401 } 402 403 static void arcmsr_remove(struct pci_dev *pdev) 404 { 405 struct Scsi_Host *host = pci_get_drvdata(pdev); 406 struct AdapterControlBlock *acb = 407 (struct AdapterControlBlock *) host->hostdata; 408 struct MessageUnit __iomem *reg = acb->pmu; 409 int poll_count = 0; 410 411 arcmsr_free_sysfs_attr(acb); 412 scsi_remove_host(host); 413 arcmsr_stop_adapter_bgrb(acb); 414 arcmsr_flush_adapter_cache(acb); 415 writel(readl(®->outbound_intmask) | 416 ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, 417 ®->outbound_intmask); 418 acb->acb_flags |= ACB_F_SCSISTOPADAPTER; 419 acb->acb_flags &= ~ACB_F_IOP_INITED; 420 421 for (poll_count = 0; poll_count < 256; poll_count++) { 422 if (!atomic_read(&acb->ccboutstandingcount)) 423 break; 424 arcmsr_interrupt(acb); 425 msleep(25); 426 } 427 428 if (atomic_read(&acb->ccboutstandingcount)) { 429 int i; 430 431 arcmsr_abort_allcmd(acb); 432 for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++) 433 readl(®->outbound_queueport); 434 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 435 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 436 if (ccb->startdone == ARCMSR_CCB_START) { 437 ccb->startdone = ARCMSR_CCB_ABORTED; 438 ccb->pcmd->result = DID_ABORT << 16; 439 arcmsr_ccb_complete(ccb, 1); 440 } 441 } 442 } 443 444 free_irq(pdev->irq, acb); 445 iounmap(acb->pmu); 446 arcmsr_free_ccb_pool(acb); 447 pci_release_regions(pdev); 448 449 scsi_host_put(host); 450 451 pci_disable_device(pdev); 452 pci_set_drvdata(pdev, NULL); 453 } 454 455 static void arcmsr_shutdown(struct pci_dev *pdev) 456 { 457 struct Scsi_Host *host = pci_get_drvdata(pdev); 458 struct AdapterControlBlock *acb = 459 (struct AdapterControlBlock *)host->hostdata; 460 461 arcmsr_stop_adapter_bgrb(acb); 462 arcmsr_flush_adapter_cache(acb); 463 } 464 465 static int arcmsr_module_init(void) 466 { 467 int error = 0; 468 469 error = pci_register_driver(&arcmsr_pci_driver); 470 return error; 471 } 472 473 static void arcmsr_module_exit(void) 474 { 475 pci_unregister_driver(&arcmsr_pci_driver); 476 } 477 module_init(arcmsr_module_init); 478 module_exit(arcmsr_module_exit); 479 480 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb) 481 { 482 struct MessageUnit __iomem *reg = acb->pmu; 483 u32 orig_mask = readl(®->outbound_intmask); 484 485 writel(orig_mask | ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, 486 ®->outbound_intmask); 487 return orig_mask; 488 } 489 490 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, 491 u32 orig_mask) 492 { 493 struct MessageUnit __iomem *reg = acb->pmu; 494 u32 mask; 495 496 mask = orig_mask & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE | 497 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE); 498 writel(mask, ®->outbound_intmask); 499 } 500 501 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb) 502 { 503 struct MessageUnit __iomem *reg = acb->pmu; 504 505 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0); 506 if (arcmsr_wait_msgint_ready(acb)) 507 printk(KERN_NOTICE 508 "arcmsr%d: wait 'flush adapter cache' timeout \n" 509 , acb->host->host_no); 510 } 511 512 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb) 513 { 514 struct scsi_cmnd *pcmd = ccb->pcmd; 515 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer; 516 517 pcmd->result = DID_OK << 16; 518 if (sensebuffer) { 519 int sense_data_length = 520 sizeof (struct SENSE_DATA) < sizeof (pcmd->sense_buffer) 521 ? sizeof (struct SENSE_DATA) : sizeof (pcmd->sense_buffer); 522 memset(sensebuffer, 0, sizeof (pcmd->sense_buffer)); 523 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length); 524 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS; 525 sensebuffer->Valid = 1; 526 } 527 } 528 529 static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb) 530 { 531 struct MessageUnit __iomem *reg = acb->pmu; 532 uint32_t Index; 533 uint8_t Retries = 0x00; 534 535 do { 536 for (Index = 0; Index < 100; Index++) { 537 if (readl(®->outbound_intstatus) 538 & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) { 539 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT 540 , ®->outbound_intstatus); 541 return 0x00; 542 } 543 msleep_interruptible(10); 544 }/*max 1 seconds*/ 545 } while (Retries++ < 20);/*max 20 sec*/ 546 return 0xff; 547 } 548 549 static void arcmsr_build_ccb(struct AdapterControlBlock *acb, 550 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd) 551 { 552 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 553 int8_t *psge = (int8_t *)&arcmsr_cdb->u; 554 uint32_t address_lo, address_hi; 555 int arccdbsize = 0x30; 556 int nseg; 557 558 ccb->pcmd = pcmd; 559 memset(arcmsr_cdb, 0, sizeof (struct ARCMSR_CDB)); 560 arcmsr_cdb->Bus = 0; 561 arcmsr_cdb->TargetID = pcmd->device->id; 562 arcmsr_cdb->LUN = pcmd->device->lun; 563 arcmsr_cdb->Function = 1; 564 arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len; 565 arcmsr_cdb->Context = (unsigned long)arcmsr_cdb; 566 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len); 567 568 nseg = scsi_dma_map(pcmd); 569 BUG_ON(nseg < 0); 570 571 if (nseg) { 572 int length, i, cdb_sgcount = 0; 573 struct scatterlist *sg; 574 575 /* map stor port SG list to our iop SG List. */ 576 scsi_for_each_sg(pcmd, sg, nseg, i) { 577 /* Get the physical address of the current data pointer */ 578 length = cpu_to_le32(sg_dma_len(sg)); 579 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg))); 580 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg))); 581 if (address_hi == 0) { 582 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge; 583 584 pdma_sg->address = address_lo; 585 pdma_sg->length = length; 586 psge += sizeof (struct SG32ENTRY); 587 arccdbsize += sizeof (struct SG32ENTRY); 588 } else { 589 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge; 590 591 pdma_sg->addresshigh = address_hi; 592 pdma_sg->address = address_lo; 593 pdma_sg->length = length|IS_SG64_ADDR; 594 psge += sizeof (struct SG64ENTRY); 595 arccdbsize += sizeof (struct SG64ENTRY); 596 } 597 cdb_sgcount++; 598 } 599 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount; 600 arcmsr_cdb->DataLength = scsi_bufflen(pcmd); 601 if ( arccdbsize > 256) 602 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE; 603 } 604 if (pcmd->sc_data_direction == DMA_TO_DEVICE ) { 605 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE; 606 ccb->ccb_flags |= CCB_FLAG_WRITE; 607 } 608 } 609 610 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb) 611 { 612 struct MessageUnit __iomem *reg = acb->pmu; 613 uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr; 614 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 615 616 atomic_inc(&acb->ccboutstandingcount); 617 ccb->startdone = ARCMSR_CCB_START; 618 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) 619 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE, 620 ®->inbound_queueport); 621 else 622 writel(cdb_shifted_phyaddr, ®->inbound_queueport); 623 } 624 625 void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb) 626 { 627 struct MessageUnit __iomem *reg = acb->pmu; 628 struct QBUFFER __iomem *pwbuffer = (struct QBUFFER __iomem *) ®->message_wbuffer; 629 uint8_t __iomem *iop_data = (uint8_t __iomem *) pwbuffer->data; 630 int32_t allxfer_len = 0; 631 632 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) { 633 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 634 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) 635 && (allxfer_len < 124)) { 636 writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data); 637 acb->wqbuf_firstindex++; 638 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 639 iop_data++; 640 allxfer_len++; 641 } 642 writel(allxfer_len, &pwbuffer->data_len); 643 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK 644 , ®->inbound_doorbell); 645 } 646 } 647 648 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb) 649 { 650 struct MessageUnit __iomem *reg = acb->pmu; 651 652 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 653 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, ®->inbound_msgaddr0); 654 if (arcmsr_wait_msgint_ready(acb)) 655 printk(KERN_NOTICE 656 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" 657 , acb->host->host_no); 658 } 659 660 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb) 661 { 662 dma_free_coherent(&acb->pdev->dev, 663 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20, 664 acb->dma_coherent, 665 acb->dma_coherent_handle); 666 } 667 668 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb) 669 { 670 struct MessageUnit __iomem *reg = acb->pmu; 671 struct CommandControlBlock *ccb; 672 uint32_t flag_ccb, outbound_intstatus, outbound_doorbell; 673 674 outbound_intstatus = readl(®->outbound_intstatus) 675 & acb->outbound_int_enable; 676 writel(outbound_intstatus, ®->outbound_intstatus); 677 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) { 678 outbound_doorbell = readl(®->outbound_doorbell); 679 writel(outbound_doorbell, ®->outbound_doorbell); 680 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) { 681 struct QBUFFER __iomem * prbuffer = 682 (struct QBUFFER __iomem *) ®->message_rbuffer; 683 uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data; 684 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex; 685 686 rqbuf_lastindex = acb->rqbuf_lastindex; 687 rqbuf_firstindex = acb->rqbuf_firstindex; 688 iop_len = readl(&prbuffer->data_len); 689 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) 690 &(ARCMSR_MAX_QBUFFER - 1); 691 if (my_empty_len >= iop_len) { 692 while (iop_len > 0) { 693 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data); 694 acb->rqbuf_lastindex++; 695 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 696 iop_data++; 697 iop_len--; 698 } 699 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, 700 ®->inbound_doorbell); 701 } else 702 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW; 703 } 704 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) { 705 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED; 706 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) { 707 struct QBUFFER __iomem * pwbuffer = 708 (struct QBUFFER __iomem *) ®->message_wbuffer; 709 uint8_t __iomem * iop_data = (uint8_t __iomem *) pwbuffer->data; 710 int32_t allxfer_len = 0; 711 712 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 713 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) 714 && (allxfer_len < 124)) { 715 writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data); 716 acb->wqbuf_firstindex++; 717 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 718 iop_data++; 719 allxfer_len++; 720 } 721 writel(allxfer_len, &pwbuffer->data_len); 722 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, 723 ®->inbound_doorbell); 724 } 725 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) 726 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED; 727 } 728 } 729 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) { 730 int id, lun; 731 /* 732 **************************************************************** 733 ** areca cdb command done 734 **************************************************************** 735 */ 736 while (1) { 737 if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF) 738 break;/*chip FIFO no ccb for completion already*/ 739 /* check if command done with no error*/ 740 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + 741 (flag_ccb << 5)); 742 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 743 if (ccb->startdone == ARCMSR_CCB_ABORTED) { 744 struct scsi_cmnd *abortcmd = ccb->pcmd; 745 if (abortcmd) { 746 abortcmd->result |= DID_ABORT >> 16; 747 arcmsr_ccb_complete(ccb, 1); 748 printk(KERN_NOTICE 749 "arcmsr%d: ccb ='0x%p' isr got aborted command \n" 750 , acb->host->host_no, ccb); 751 } 752 continue; 753 } 754 printk(KERN_NOTICE 755 "arcmsr%d: isr get an illegal ccb command done acb = '0x%p'" 756 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x" 757 " ccboutstandingcount = %d \n" 758 , acb->host->host_no 759 , acb 760 , ccb 761 , ccb->acb 762 , ccb->startdone 763 , atomic_read(&acb->ccboutstandingcount)); 764 continue; 765 } 766 id = ccb->pcmd->device->id; 767 lun = ccb->pcmd->device->lun; 768 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) { 769 if (acb->devstate[id][lun] == ARECA_RAID_GONE) 770 acb->devstate[id][lun] = ARECA_RAID_GOOD; 771 ccb->pcmd->result = DID_OK << 16; 772 arcmsr_ccb_complete(ccb, 1); 773 } else { 774 switch(ccb->arcmsr_cdb.DeviceStatus) { 775 case ARCMSR_DEV_SELECT_TIMEOUT: { 776 acb->devstate[id][lun] = ARECA_RAID_GONE; 777 ccb->pcmd->result = DID_NO_CONNECT << 16; 778 arcmsr_ccb_complete(ccb, 1); 779 } 780 break; 781 case ARCMSR_DEV_ABORTED: 782 case ARCMSR_DEV_INIT_FAIL: { 783 acb->devstate[id][lun] = ARECA_RAID_GONE; 784 ccb->pcmd->result = DID_BAD_TARGET << 16; 785 arcmsr_ccb_complete(ccb, 1); 786 } 787 break; 788 case ARCMSR_DEV_CHECK_CONDITION: { 789 acb->devstate[id][lun] = ARECA_RAID_GOOD; 790 arcmsr_report_sense_info(ccb); 791 arcmsr_ccb_complete(ccb, 1); 792 } 793 break; 794 default: 795 printk(KERN_NOTICE 796 "arcmsr%d: scsi id = %d lun = %d" 797 " isr get command error done, " 798 "but got unknown DeviceStatus = 0x%x \n" 799 , acb->host->host_no 800 , id 801 , lun 802 , ccb->arcmsr_cdb.DeviceStatus); 803 acb->devstate[id][lun] = ARECA_RAID_GONE; 804 ccb->pcmd->result = DID_NO_CONNECT << 16; 805 arcmsr_ccb_complete(ccb, 1); 806 break; 807 } 808 } 809 }/*drain reply FIFO*/ 810 } 811 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) 812 return IRQ_NONE; 813 return IRQ_HANDLED; 814 } 815 816 static void arcmsr_iop_parking(struct AdapterControlBlock *acb) 817 { 818 if (acb) { 819 /* stop adapter background rebuild */ 820 if (acb->acb_flags & ACB_F_MSG_START_BGRB) { 821 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 822 arcmsr_stop_adapter_bgrb(acb); 823 arcmsr_flush_adapter_cache(acb); 824 } 825 } 826 } 827 828 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd) 829 { 830 struct MessageUnit __iomem *reg = acb->pmu; 831 struct CMD_MESSAGE_FIELD *pcmdmessagefld; 832 int retvalue = 0, transfer_len = 0; 833 char *buffer; 834 struct scatterlist *sg; 835 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 | 836 (uint32_t ) cmd->cmnd[6] << 16 | 837 (uint32_t ) cmd->cmnd[7] << 8 | 838 (uint32_t ) cmd->cmnd[8]; 839 /* 4 bytes: Areca io control code */ 840 841 sg = scsi_sglist(cmd); 842 buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; 843 if (scsi_sg_count(cmd) > 1) { 844 retvalue = ARCMSR_MESSAGE_FAIL; 845 goto message_out; 846 } 847 transfer_len += sg->length; 848 849 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) { 850 retvalue = ARCMSR_MESSAGE_FAIL; 851 goto message_out; 852 } 853 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer; 854 switch(controlcode) { 855 case ARCMSR_MESSAGE_READ_RQBUFFER: { 856 unsigned long *ver_addr; 857 dma_addr_t buf_handle; 858 uint8_t *pQbuffer, *ptmpQbuffer; 859 int32_t allxfer_len = 0; 860 861 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle); 862 if (!ver_addr) { 863 retvalue = ARCMSR_MESSAGE_FAIL; 864 goto message_out; 865 } 866 ptmpQbuffer = (uint8_t *) ver_addr; 867 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex) 868 && (allxfer_len < 1031)) { 869 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex]; 870 memcpy(ptmpQbuffer, pQbuffer, 1); 871 acb->rqbuf_firstindex++; 872 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 873 ptmpQbuffer++; 874 allxfer_len++; 875 } 876 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 877 struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *) 878 ®->message_rbuffer; 879 uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data; 880 int32_t iop_len; 881 882 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 883 iop_len = readl(&prbuffer->data_len); 884 while (iop_len > 0) { 885 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data); 886 acb->rqbuf_lastindex++; 887 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 888 iop_data++; 889 iop_len--; 890 } 891 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, 892 ®->inbound_doorbell); 893 } 894 memcpy(pcmdmessagefld->messagedatabuffer, 895 (uint8_t *)ver_addr, allxfer_len); 896 pcmdmessagefld->cmdmessage.Length = allxfer_len; 897 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 898 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle); 899 } 900 break; 901 case ARCMSR_MESSAGE_WRITE_WQBUFFER: { 902 unsigned long *ver_addr; 903 dma_addr_t buf_handle; 904 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex; 905 uint8_t *pQbuffer, *ptmpuserbuffer; 906 907 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle); 908 if (!ver_addr) { 909 retvalue = ARCMSR_MESSAGE_FAIL; 910 goto message_out; 911 } 912 ptmpuserbuffer = (uint8_t *)ver_addr; 913 user_len = pcmdmessagefld->cmdmessage.Length; 914 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len); 915 wqbuf_lastindex = acb->wqbuf_lastindex; 916 wqbuf_firstindex = acb->wqbuf_firstindex; 917 if (wqbuf_lastindex != wqbuf_firstindex) { 918 struct SENSE_DATA *sensebuffer = 919 (struct SENSE_DATA *)cmd->sense_buffer; 920 arcmsr_post_Qbuffer(acb); 921 /* has error report sensedata */ 922 sensebuffer->ErrorCode = 0x70; 923 sensebuffer->SenseKey = ILLEGAL_REQUEST; 924 sensebuffer->AdditionalSenseLength = 0x0A; 925 sensebuffer->AdditionalSenseCode = 0x20; 926 sensebuffer->Valid = 1; 927 retvalue = ARCMSR_MESSAGE_FAIL; 928 } else { 929 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1) 930 &(ARCMSR_MAX_QBUFFER - 1); 931 if (my_empty_len >= user_len) { 932 while (user_len > 0) { 933 pQbuffer = 934 &acb->wqbuffer[acb->wqbuf_lastindex]; 935 memcpy(pQbuffer, ptmpuserbuffer, 1); 936 acb->wqbuf_lastindex++; 937 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 938 ptmpuserbuffer++; 939 user_len--; 940 } 941 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { 942 acb->acb_flags &= 943 ~ACB_F_MESSAGE_WQBUFFER_CLEARED; 944 arcmsr_post_Qbuffer(acb); 945 } 946 } else { 947 /* has error report sensedata */ 948 struct SENSE_DATA *sensebuffer = 949 (struct SENSE_DATA *)cmd->sense_buffer; 950 sensebuffer->ErrorCode = 0x70; 951 sensebuffer->SenseKey = ILLEGAL_REQUEST; 952 sensebuffer->AdditionalSenseLength = 0x0A; 953 sensebuffer->AdditionalSenseCode = 0x20; 954 sensebuffer->Valid = 1; 955 retvalue = ARCMSR_MESSAGE_FAIL; 956 } 957 } 958 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle); 959 } 960 break; 961 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: { 962 uint8_t *pQbuffer = acb->rqbuffer; 963 964 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 965 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 966 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, 967 ®->inbound_doorbell); 968 } 969 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED; 970 acb->rqbuf_firstindex = 0; 971 acb->rqbuf_lastindex = 0; 972 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 973 pcmdmessagefld->cmdmessage.ReturnCode = 974 ARCMSR_MESSAGE_RETURNCODE_OK; 975 } 976 break; 977 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: { 978 uint8_t *pQbuffer = acb->wqbuffer; 979 980 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 981 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 982 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK 983 , ®->inbound_doorbell); 984 } 985 acb->acb_flags |= 986 (ACB_F_MESSAGE_WQBUFFER_CLEARED | 987 ACB_F_MESSAGE_WQBUFFER_READED); 988 acb->wqbuf_firstindex = 0; 989 acb->wqbuf_lastindex = 0; 990 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 991 pcmdmessagefld->cmdmessage.ReturnCode = 992 ARCMSR_MESSAGE_RETURNCODE_OK; 993 } 994 break; 995 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: { 996 uint8_t *pQbuffer; 997 998 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 999 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1000 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK 1001 , ®->inbound_doorbell); 1002 } 1003 acb->acb_flags |= 1004 (ACB_F_MESSAGE_WQBUFFER_CLEARED 1005 | ACB_F_MESSAGE_RQBUFFER_CLEARED 1006 | ACB_F_MESSAGE_WQBUFFER_READED); 1007 acb->rqbuf_firstindex = 0; 1008 acb->rqbuf_lastindex = 0; 1009 acb->wqbuf_firstindex = 0; 1010 acb->wqbuf_lastindex = 0; 1011 pQbuffer = acb->rqbuffer; 1012 memset(pQbuffer, 0, sizeof (struct QBUFFER)); 1013 pQbuffer = acb->wqbuffer; 1014 memset(pQbuffer, 0, sizeof (struct QBUFFER)); 1015 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1016 } 1017 break; 1018 case ARCMSR_MESSAGE_RETURN_CODE_3F: { 1019 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F; 1020 } 1021 break; 1022 case ARCMSR_MESSAGE_SAY_HELLO: { 1023 int8_t * hello_string = "Hello! I am ARCMSR"; 1024 1025 memcpy(pcmdmessagefld->messagedatabuffer, hello_string 1026 , (int16_t)strlen(hello_string)); 1027 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1028 } 1029 break; 1030 case ARCMSR_MESSAGE_SAY_GOODBYE: 1031 arcmsr_iop_parking(acb); 1032 break; 1033 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: 1034 arcmsr_flush_adapter_cache(acb); 1035 break; 1036 default: 1037 retvalue = ARCMSR_MESSAGE_FAIL; 1038 } 1039 message_out: 1040 sg = scsi_sglist(cmd); 1041 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1042 1043 return retvalue; 1044 } 1045 1046 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb) 1047 { 1048 struct list_head *head = &acb->ccb_free_list; 1049 struct CommandControlBlock *ccb = NULL; 1050 1051 if (!list_empty(head)) { 1052 ccb = list_entry(head->next, struct CommandControlBlock, list); 1053 list_del(head->next); 1054 } 1055 return ccb; 1056 } 1057 1058 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb, 1059 struct scsi_cmnd *cmd) 1060 { 1061 switch (cmd->cmnd[0]) { 1062 case INQUIRY: { 1063 unsigned char inqdata[36]; 1064 char *buffer; 1065 struct scatterlist *sg; 1066 1067 if (cmd->device->lun) { 1068 cmd->result = (DID_TIME_OUT << 16); 1069 cmd->scsi_done(cmd); 1070 return; 1071 } 1072 inqdata[0] = TYPE_PROCESSOR; 1073 /* Periph Qualifier & Periph Dev Type */ 1074 inqdata[1] = 0; 1075 /* rem media bit & Dev Type Modifier */ 1076 inqdata[2] = 0; 1077 /* ISO, ECMA, & ANSI versions */ 1078 inqdata[4] = 31; 1079 /* length of additional data */ 1080 strncpy(&inqdata[8], "Areca ", 8); 1081 /* Vendor Identification */ 1082 strncpy(&inqdata[16], "RAID controller ", 16); 1083 /* Product Identification */ 1084 strncpy(&inqdata[32], "R001", 4); /* Product Revision */ 1085 1086 sg = scsi_sglist(cmd); 1087 buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; 1088 1089 memcpy(buffer, inqdata, sizeof(inqdata)); 1090 sg = scsi_sglist(cmd); 1091 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1092 1093 cmd->scsi_done(cmd); 1094 } 1095 break; 1096 case WRITE_BUFFER: 1097 case READ_BUFFER: { 1098 if (arcmsr_iop_message_xfer(acb, cmd)) 1099 cmd->result = (DID_ERROR << 16); 1100 cmd->scsi_done(cmd); 1101 } 1102 break; 1103 default: 1104 cmd->scsi_done(cmd); 1105 } 1106 } 1107 1108 static int arcmsr_queue_command(struct scsi_cmnd *cmd, 1109 void (* done)(struct scsi_cmnd *)) 1110 { 1111 struct Scsi_Host *host = cmd->device->host; 1112 struct AdapterControlBlock *acb = 1113 (struct AdapterControlBlock *) host->hostdata; 1114 struct CommandControlBlock *ccb; 1115 int target = cmd->device->id; 1116 int lun = cmd->device->lun; 1117 1118 cmd->scsi_done = done; 1119 cmd->host_scribble = NULL; 1120 cmd->result = 0; 1121 if (acb->acb_flags & ACB_F_BUS_RESET) { 1122 printk(KERN_NOTICE "arcmsr%d: bus reset" 1123 " and return busy \n" 1124 , acb->host->host_no); 1125 return SCSI_MLQUEUE_HOST_BUSY; 1126 } 1127 if (target == 16) { 1128 /* virtual device for iop message transfer */ 1129 arcmsr_handle_virtual_command(acb, cmd); 1130 return 0; 1131 } 1132 if (acb->devstate[target][lun] == ARECA_RAID_GONE) { 1133 uint8_t block_cmd; 1134 1135 block_cmd = cmd->cmnd[0] & 0x0f; 1136 if (block_cmd == 0x08 || block_cmd == 0x0a) { 1137 printk(KERN_NOTICE 1138 "arcmsr%d: block 'read/write'" 1139 "command with gone raid volume" 1140 " Cmd = %2x, TargetId = %d, Lun = %d \n" 1141 , acb->host->host_no 1142 , cmd->cmnd[0] 1143 , target, lun); 1144 cmd->result = (DID_NO_CONNECT << 16); 1145 cmd->scsi_done(cmd); 1146 return 0; 1147 } 1148 } 1149 if (atomic_read(&acb->ccboutstandingcount) >= 1150 ARCMSR_MAX_OUTSTANDING_CMD) 1151 return SCSI_MLQUEUE_HOST_BUSY; 1152 1153 ccb = arcmsr_get_freeccb(acb); 1154 if (!ccb) 1155 return SCSI_MLQUEUE_HOST_BUSY; 1156 arcmsr_build_ccb(acb, ccb, cmd); 1157 arcmsr_post_ccb(acb, ccb); 1158 return 0; 1159 } 1160 1161 static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb) 1162 { 1163 struct MessageUnit __iomem *reg = acb->pmu; 1164 char *acb_firm_model = acb->firm_model; 1165 char *acb_firm_version = acb->firm_version; 1166 char __iomem *iop_firm_model = (char __iomem *) ®->message_rwbuffer[15]; 1167 char __iomem *iop_firm_version = (char __iomem *) ®->message_rwbuffer[17]; 1168 int count; 1169 1170 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, ®->inbound_msgaddr0); 1171 if (arcmsr_wait_msgint_ready(acb)) 1172 printk(KERN_NOTICE 1173 "arcmsr%d: wait " 1174 "'get adapter firmware miscellaneous data' timeout \n" 1175 , acb->host->host_no); 1176 count = 8; 1177 while (count) { 1178 *acb_firm_model = readb(iop_firm_model); 1179 acb_firm_model++; 1180 iop_firm_model++; 1181 count--; 1182 } 1183 count = 16; 1184 while (count) { 1185 *acb_firm_version = readb(iop_firm_version); 1186 acb_firm_version++; 1187 iop_firm_version++; 1188 count--; 1189 } 1190 printk(KERN_INFO 1191 "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n" 1192 , acb->host->host_no 1193 , acb->firm_version); 1194 acb->firm_request_len = readl(®->message_rwbuffer[1]); 1195 acb->firm_numbers_queue = readl(®->message_rwbuffer[2]); 1196 acb->firm_sdram_size = readl(®->message_rwbuffer[3]); 1197 acb->firm_hd_channels = readl(®->message_rwbuffer[4]); 1198 } 1199 1200 static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, 1201 struct CommandControlBlock *poll_ccb) 1202 { 1203 struct MessageUnit __iomem *reg = acb->pmu; 1204 struct CommandControlBlock *ccb; 1205 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0; 1206 int id, lun; 1207 1208 polling_ccb_retry: 1209 poll_count++; 1210 outbound_intstatus = readl(®->outbound_intstatus) 1211 & acb->outbound_int_enable; 1212 writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ 1213 while (1) { 1214 if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF) { 1215 if (poll_ccb_done) 1216 break; 1217 else { 1218 msleep(25); 1219 if (poll_count > 100) 1220 break; 1221 goto polling_ccb_retry; 1222 } 1223 } 1224 ccb = (struct CommandControlBlock *) 1225 (acb->vir2phy_offset + (flag_ccb << 5)); 1226 if ((ccb->acb != acb) || 1227 (ccb->startdone != ARCMSR_CCB_START)) { 1228 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || 1229 (ccb == poll_ccb)) { 1230 printk(KERN_NOTICE 1231 "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'" 1232 " poll command abort successfully \n" 1233 , acb->host->host_no 1234 , ccb->pcmd->device->id 1235 , ccb->pcmd->device->lun 1236 , ccb); 1237 ccb->pcmd->result = DID_ABORT << 16; 1238 arcmsr_ccb_complete(ccb, 1); 1239 poll_ccb_done = 1; 1240 continue; 1241 } 1242 printk(KERN_NOTICE 1243 "arcmsr%d: polling get an illegal ccb" 1244 " command done ccb ='0x%p'" 1245 "ccboutstandingcount = %d \n" 1246 , acb->host->host_no 1247 , ccb 1248 , atomic_read(&acb->ccboutstandingcount)); 1249 continue; 1250 } 1251 id = ccb->pcmd->device->id; 1252 lun = ccb->pcmd->device->lun; 1253 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) { 1254 if (acb->devstate[id][lun] == ARECA_RAID_GONE) 1255 acb->devstate[id][lun] = ARECA_RAID_GOOD; 1256 ccb->pcmd->result = DID_OK << 16; 1257 arcmsr_ccb_complete(ccb, 1); 1258 } else { 1259 switch(ccb->arcmsr_cdb.DeviceStatus) { 1260 case ARCMSR_DEV_SELECT_TIMEOUT: { 1261 acb->devstate[id][lun] = ARECA_RAID_GONE; 1262 ccb->pcmd->result = DID_NO_CONNECT << 16; 1263 arcmsr_ccb_complete(ccb, 1); 1264 } 1265 break; 1266 case ARCMSR_DEV_ABORTED: 1267 case ARCMSR_DEV_INIT_FAIL: { 1268 acb->devstate[id][lun] = ARECA_RAID_GONE; 1269 ccb->pcmd->result = DID_BAD_TARGET << 16; 1270 arcmsr_ccb_complete(ccb, 1); 1271 } 1272 break; 1273 case ARCMSR_DEV_CHECK_CONDITION: { 1274 acb->devstate[id][lun] = ARECA_RAID_GOOD; 1275 arcmsr_report_sense_info(ccb); 1276 arcmsr_ccb_complete(ccb, 1); 1277 } 1278 break; 1279 default: 1280 printk(KERN_NOTICE 1281 "arcmsr%d: scsi id = %d lun = %d" 1282 " polling and getting command error done" 1283 "but got unknown DeviceStatus = 0x%x \n" 1284 , acb->host->host_no 1285 , id 1286 , lun 1287 , ccb->arcmsr_cdb.DeviceStatus); 1288 acb->devstate[id][lun] = ARECA_RAID_GONE; 1289 ccb->pcmd->result = DID_BAD_TARGET << 16; 1290 arcmsr_ccb_complete(ccb, 1); 1291 break; 1292 } 1293 } 1294 } 1295 } 1296 static void arcmsr_done4_abort_postqueue(struct AdapterControlBlock *acb) 1297 { 1298 int i = 0, found = 0; 1299 int id, lun; 1300 uint32_t flag_ccb, outbound_intstatus; 1301 struct MessageUnit __iomem *reg = acb->pmu; 1302 struct CommandControlBlock *ccb; 1303 /*clear and abort all outbound posted Q*/ 1304 1305 while (((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) && 1306 (i++ < 256)){ 1307 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + 1308 (flag_ccb << 5)); 1309 if (ccb){ 1310 if ((ccb->acb != acb)||(ccb->startdone != \ 1311 ARCMSR_CCB_START)){ 1312 printk(KERN_NOTICE "arcmsr%d: polling get \ 1313 an illegal ccb" "command done ccb = '0x%p'""ccboutstandingcount = %d \n", 1314 acb->host->host_no, ccb, 1315 atomic_read(&acb->ccboutstandingcount)); 1316 continue; 1317 } 1318 1319 id = ccb->pcmd->device->id; 1320 lun = ccb->pcmd->device->lun; 1321 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)){ 1322 if (acb->devstate[id][lun] == ARECA_RAID_GONE) 1323 acb->devstate[id][lun] = ARECA_RAID_GOOD; 1324 ccb->pcmd->result = DID_OK << 16; 1325 arcmsr_ccb_complete(ccb, 1); 1326 } 1327 else { 1328 switch(ccb->arcmsr_cdb.DeviceStatus) { 1329 case ARCMSR_DEV_SELECT_TIMEOUT: { 1330 acb->devstate[id][lun] = ARECA_RAID_GONE; 1331 ccb->pcmd->result = DID_NO_CONNECT << 16; 1332 arcmsr_ccb_complete(ccb, 1); 1333 } 1334 break; 1335 1336 case ARCMSR_DEV_ABORTED: 1337 1338 case ARCMSR_DEV_INIT_FAIL: { 1339 acb->devstate[id][lun] = 1340 ARECA_RAID_GONE; 1341 ccb->pcmd->result = 1342 DID_BAD_TARGET << 16; 1343 arcmsr_ccb_complete(ccb, 1); 1344 } 1345 break; 1346 1347 case ARCMSR_DEV_CHECK_CONDITION: { 1348 acb->devstate[id][lun] = 1349 ARECA_RAID_GOOD; 1350 arcmsr_report_sense_info(ccb); 1351 arcmsr_ccb_complete(ccb, 1); 1352 } 1353 break; 1354 1355 default: 1356 printk(KERN_NOTICE 1357 "arcmsr%d: scsi id = %d \ 1358 lun = %d""polling and \ 1359 getting command error \ 1360 done""but got unknown \ 1361 DeviceStatus = 0x%x \n", 1362 acb->host->host_no, id, 1363 lun, ccb->arcmsr_cdb.DeviceStatus); 1364 acb->devstate[id][lun] = 1365 ARECA_RAID_GONE; 1366 ccb->pcmd->result = 1367 DID_BAD_TARGET << 16; 1368 arcmsr_ccb_complete(ccb, 1); 1369 break; 1370 } 1371 } 1372 found = 1; 1373 } 1374 } 1375 if (found){ 1376 outbound_intstatus = readl(®->outbound_intstatus) & \ 1377 acb->outbound_int_enable; 1378 writel(outbound_intstatus, ®->outbound_intstatus); 1379 /*clear interrupt*/ 1380 } 1381 return; 1382 } 1383 1384 1385 static void arcmsr_iop_init(struct AdapterControlBlock *acb) 1386 { 1387 struct MessageUnit __iomem *reg = acb->pmu; 1388 uint32_t intmask_org, mask, outbound_doorbell, firmware_state = 0; 1389 1390 do { 1391 firmware_state = readl(®->outbound_msgaddr1); 1392 } while (!(firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK)); 1393 intmask_org = readl(®->outbound_intmask) 1394 | ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE; 1395 arcmsr_get_firmware_spec(acb); 1396 1397 acb->acb_flags |= ACB_F_MSG_START_BGRB; 1398 writel(ARCMSR_INBOUND_MESG0_START_BGRB, ®->inbound_msgaddr0); 1399 if (arcmsr_wait_msgint_ready(acb)) { 1400 printk(KERN_NOTICE "arcmsr%d: " 1401 "wait 'start adapter background rebulid' timeout\n", 1402 acb->host->host_no); 1403 } 1404 1405 outbound_doorbell = readl(®->outbound_doorbell); 1406 writel(outbound_doorbell, ®->outbound_doorbell); 1407 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); 1408 mask = ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE 1409 | ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE); 1410 writel(intmask_org & mask, ®->outbound_intmask); 1411 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff; 1412 acb->acb_flags |= ACB_F_IOP_INITED; 1413 } 1414 1415 static void arcmsr_iop_reset(struct AdapterControlBlock *acb) 1416 { 1417 struct CommandControlBlock *ccb; 1418 uint32_t intmask_org; 1419 int i = 0; 1420 1421 if (atomic_read(&acb->ccboutstandingcount) != 0) { 1422 /* talk to iop 331 outstanding command aborted */ 1423 arcmsr_abort_allcmd(acb); 1424 /* wait for 3 sec for all command aborted*/ 1425 msleep_interruptible(3000); 1426 /* disable all outbound interrupt */ 1427 intmask_org = arcmsr_disable_outbound_ints(acb); 1428 /* clear all outbound posted Q */ 1429 arcmsr_done4_abort_postqueue(acb); 1430 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 1431 ccb = acb->pccb_pool[i]; 1432 if (ccb->startdone == ARCMSR_CCB_START) { 1433 ccb->startdone = ARCMSR_CCB_ABORTED; 1434 } 1435 } 1436 /* enable all outbound interrupt */ 1437 arcmsr_enable_outbound_ints(acb, intmask_org); 1438 } 1439 1440 } 1441 1442 static int arcmsr_bus_reset(struct scsi_cmnd *cmd) 1443 { 1444 struct AdapterControlBlock *acb = 1445 (struct AdapterControlBlock *)cmd->device->host->hostdata; 1446 int i; 1447 1448 acb->num_resets++; 1449 acb->acb_flags |= ACB_F_BUS_RESET; 1450 for (i = 0; i < 400; i++) { 1451 if (!atomic_read(&acb->ccboutstandingcount)) 1452 break; 1453 arcmsr_interrupt(acb); 1454 msleep(25); 1455 } 1456 arcmsr_iop_reset(acb); 1457 acb->acb_flags &= ~ACB_F_BUS_RESET; 1458 return SUCCESS; 1459 } 1460 1461 static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb, 1462 struct CommandControlBlock *ccb) 1463 { 1464 u32 intmask; 1465 1466 ccb->startdone = ARCMSR_CCB_ABORTED; 1467 1468 /* 1469 ** Wait for 3 sec for all command done. 1470 */ 1471 msleep_interruptible(3000); 1472 1473 intmask = arcmsr_disable_outbound_ints(acb); 1474 arcmsr_polling_ccbdone(acb, ccb); 1475 arcmsr_enable_outbound_ints(acb, intmask); 1476 } 1477 1478 static int arcmsr_abort(struct scsi_cmnd *cmd) 1479 { 1480 struct AdapterControlBlock *acb = 1481 (struct AdapterControlBlock *)cmd->device->host->hostdata; 1482 int i = 0; 1483 1484 printk(KERN_NOTICE 1485 "arcmsr%d: abort device command of scsi id = %d lun = %d \n", 1486 acb->host->host_no, cmd->device->id, cmd->device->lun); 1487 acb->num_aborts++; 1488 /* 1489 ************************************************ 1490 ** the all interrupt service routine is locked 1491 ** we need to handle it as soon as possible and exit 1492 ************************************************ 1493 */ 1494 if (!atomic_read(&acb->ccboutstandingcount)) 1495 return SUCCESS; 1496 1497 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 1498 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 1499 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) { 1500 arcmsr_abort_one_cmd(acb, ccb); 1501 break; 1502 } 1503 } 1504 1505 return SUCCESS; 1506 } 1507 1508 static const char *arcmsr_info(struct Scsi_Host *host) 1509 { 1510 struct AdapterControlBlock *acb = 1511 (struct AdapterControlBlock *) host->hostdata; 1512 static char buf[256]; 1513 char *type; 1514 int raid6 = 1; 1515 1516 switch (acb->pdev->device) { 1517 case PCI_DEVICE_ID_ARECA_1110: 1518 case PCI_DEVICE_ID_ARECA_1210: 1519 raid6 = 0; 1520 /*FALLTHRU*/ 1521 case PCI_DEVICE_ID_ARECA_1120: 1522 case PCI_DEVICE_ID_ARECA_1130: 1523 case PCI_DEVICE_ID_ARECA_1160: 1524 case PCI_DEVICE_ID_ARECA_1170: 1525 case PCI_DEVICE_ID_ARECA_1220: 1526 case PCI_DEVICE_ID_ARECA_1230: 1527 case PCI_DEVICE_ID_ARECA_1260: 1528 case PCI_DEVICE_ID_ARECA_1270: 1529 case PCI_DEVICE_ID_ARECA_1280: 1530 type = "SATA"; 1531 break; 1532 case PCI_DEVICE_ID_ARECA_1380: 1533 case PCI_DEVICE_ID_ARECA_1381: 1534 case PCI_DEVICE_ID_ARECA_1680: 1535 case PCI_DEVICE_ID_ARECA_1681: 1536 type = "SAS"; 1537 break; 1538 default: 1539 type = "X-TYPE"; 1540 break; 1541 } 1542 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s", 1543 type, raid6 ? "( RAID6 capable)" : "", 1544 ARCMSR_DRIVER_VERSION); 1545 return buf; 1546 } 1547 1548 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev) 1549 { 1550 struct Scsi_Host *host; 1551 struct AdapterControlBlock *acb; 1552 uint8_t bus, dev_fun; 1553 int error; 1554 1555 error = pci_enable_device(pdev); 1556 if (error) 1557 return PCI_ERS_RESULT_DISCONNECT; 1558 pci_set_master(pdev); 1559 1560 host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof \ 1561 (struct AdapterControlBlock)); 1562 if (!host) 1563 return PCI_ERS_RESULT_DISCONNECT; 1564 acb = (struct AdapterControlBlock *)host->hostdata; 1565 memset(acb, 0, sizeof (struct AdapterControlBlock)); 1566 1567 error = pci_set_dma_mask(pdev, DMA_64BIT_MASK); 1568 if (error) { 1569 error = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 1570 if (error) { 1571 printk(KERN_WARNING 1572 "scsi%d: No suitable DMA mask available\n", 1573 host->host_no); 1574 return PCI_ERS_RESULT_DISCONNECT; 1575 } 1576 } 1577 bus = pdev->bus->number; 1578 dev_fun = pdev->devfn; 1579 acb = (struct AdapterControlBlock *) host->hostdata; 1580 memset(acb, 0, sizeof(struct AdapterControlBlock)); 1581 acb->pdev = pdev; 1582 acb->host = host; 1583 host->max_sectors = ARCMSR_MAX_XFER_SECTORS; 1584 host->max_lun = ARCMSR_MAX_TARGETLUN; 1585 host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/ 1586 host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/ 1587 host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES; 1588 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */ 1589 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN; 1590 host->this_id = ARCMSR_SCSI_INITIATOR_ID; 1591 host->unique_id = (bus << 8) | dev_fun; 1592 host->irq = pdev->irq; 1593 error = pci_request_regions(pdev, "arcmsr"); 1594 if (error) 1595 return PCI_ERS_RESULT_DISCONNECT; 1596 1597 acb->pmu = ioremap(pci_resource_start(pdev, 0), 1598 pci_resource_len(pdev, 0)); 1599 if (!acb->pmu) { 1600 printk(KERN_NOTICE "arcmsr%d: memory" 1601 " mapping region fail \n", acb->host->host_no); 1602 return PCI_ERS_RESULT_DISCONNECT; 1603 } 1604 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 1605 ACB_F_MESSAGE_RQBUFFER_CLEARED | 1606 ACB_F_MESSAGE_WQBUFFER_READED); 1607 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 1608 INIT_LIST_HEAD(&acb->ccb_free_list); 1609 1610 error = arcmsr_alloc_ccb_pool(acb); 1611 if (error) 1612 return PCI_ERS_RESULT_DISCONNECT; 1613 1614 error = request_irq(pdev->irq, arcmsr_do_interrupt, 1615 IRQF_DISABLED | IRQF_SHARED, "arcmsr", acb); 1616 if (error) 1617 return PCI_ERS_RESULT_DISCONNECT; 1618 1619 arcmsr_iop_init(acb); 1620 if (strncmp(acb->firm_version, "V1.42", 5) >= 0) 1621 host->max_sectors = ARCMSR_MAX_XFER_SECTORS_B; 1622 1623 pci_set_drvdata(pdev, host); 1624 1625 error = scsi_add_host(host, &pdev->dev); 1626 if (error) 1627 return PCI_ERS_RESULT_DISCONNECT; 1628 1629 error = arcmsr_alloc_sysfs_attr(acb); 1630 if (error) 1631 return PCI_ERS_RESULT_DISCONNECT; 1632 1633 scsi_scan_host(host); 1634 return PCI_ERS_RESULT_RECOVERED; 1635 } 1636 1637 static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev) 1638 { 1639 struct Scsi_Host *host = pci_get_drvdata(pdev); 1640 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 1641 struct MessageUnit __iomem *reg = acb->pmu; 1642 struct CommandControlBlock *ccb; 1643 /*clear and abort all outbound posted Q*/ 1644 int i = 0, found = 0; 1645 int id, lun; 1646 uint32_t flag_ccb, outbound_intstatus; 1647 1648 while (((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) && 1649 (i++ < 256)){ 1650 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset 1651 + (flag_ccb << 5)); 1652 if (ccb){ 1653 if ((ccb->acb != acb)||(ccb->startdone != 1654 ARCMSR_CCB_START)){ 1655 printk(KERN_NOTICE "arcmsr%d: polling \ 1656 get an illegal ccb"" command done ccb = '0x%p'" 1657 "ccboutstandingcount = %d \n", 1658 acb->host->host_no, ccb, 1659 atomic_read(&acb->ccboutstandingcount)); 1660 continue; 1661 } 1662 1663 id = ccb->pcmd->device->id; 1664 lun = ccb->pcmd->device->lun; 1665 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) { 1666 if (acb->devstate[id][lun] == 1667 ARECA_RAID_GONE) 1668 acb->devstate[id][lun] = 1669 ARECA_RAID_GOOD; 1670 ccb->pcmd->result = DID_OK << 16; 1671 arcmsr_ccb_complete(ccb, 1); 1672 } 1673 else { 1674 switch(ccb->arcmsr_cdb.DeviceStatus) { 1675 case ARCMSR_DEV_SELECT_TIMEOUT: { 1676 acb->devstate[id][lun] = 1677 ARECA_RAID_GONE; 1678 ccb->pcmd->result = 1679 DID_NO_CONNECT << 16; 1680 arcmsr_ccb_complete(ccb, 1); 1681 } 1682 break; 1683 1684 case ARCMSR_DEV_ABORTED: 1685 1686 case ARCMSR_DEV_INIT_FAIL: { 1687 acb->devstate[id][lun] = 1688 ARECA_RAID_GONE; 1689 ccb->pcmd->result = 1690 DID_BAD_TARGET << 16; 1691 arcmsr_ccb_complete(ccb, 1); 1692 } 1693 break; 1694 1695 case ARCMSR_DEV_CHECK_CONDITION: { 1696 acb->devstate[id][lun] = 1697 ARECA_RAID_GOOD; 1698 arcmsr_report_sense_info(ccb); 1699 arcmsr_ccb_complete(ccb, 1); 1700 } 1701 break; 1702 1703 default: 1704 printk(KERN_NOTICE 1705 "arcmsr%d: scsi \ 1706 id = %d lun = %d" 1707 " polling and \ 1708 getting command \ 1709 error done" 1710 "but got unknown \ 1711 DeviceStatus = 0x%x \n" 1712 , acb->host->host_no, 1713 id, lun, 1714 ccb->arcmsr_cdb.DeviceStatus); 1715 acb->devstate[id][lun] = 1716 ARECA_RAID_GONE; 1717 ccb->pcmd->result = 1718 DID_BAD_TARGET << 16; 1719 arcmsr_ccb_complete(ccb, 1); 1720 break; 1721 } 1722 } 1723 found = 1; 1724 } 1725 } 1726 if (found){ 1727 outbound_intstatus = readl(®->outbound_intstatus) & 1728 acb->outbound_int_enable; 1729 writel(outbound_intstatus, ®->outbound_intstatus); 1730 /*clear interrupt*/ 1731 } 1732 return; 1733 } 1734 1735 1736 static void arcmsr_pci_ers_disconnect_forepart(struct pci_dev *pdev) 1737 { 1738 struct Scsi_Host *host = pci_get_drvdata(pdev); 1739 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 1740 struct MessageUnit __iomem *reg = acb->pmu; 1741 struct CommandControlBlock *ccb; 1742 /*clear and abort all outbound posted Q*/ 1743 int i = 0, found = 0; 1744 int id, lun; 1745 uint32_t flag_ccb, outbound_intstatus; 1746 1747 while (((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) && 1748 (i++ < 256)){ 1749 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + 1750 (flag_ccb << 5)); 1751 if (ccb){ 1752 if ((ccb->acb != acb)||(ccb->startdone != 1753 ARCMSR_CCB_START)){ 1754 printk(KERN_NOTICE 1755 "arcmsr%d: polling get an illegal ccb" 1756 " command done ccb = '0x%p'" 1757 "ccboutstandingcount = %d \n", 1758 acb->host->host_no, ccb, 1759 atomic_read(&acb->ccboutstandingcount)); 1760 continue; 1761 } 1762 1763 id = ccb->pcmd->device->id; 1764 lun = ccb->pcmd->device->lun; 1765 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) { 1766 if (acb->devstate[id][lun] == ARECA_RAID_GONE) 1767 acb->devstate[id][lun] = ARECA_RAID_GOOD; 1768 ccb->pcmd->result = DID_OK << 16; 1769 arcmsr_ccb_complete(ccb, 1); 1770 } 1771 else { 1772 switch(ccb->arcmsr_cdb.DeviceStatus) { 1773 case ARCMSR_DEV_SELECT_TIMEOUT: { 1774 acb->devstate[id][lun] = 1775 ARECA_RAID_GONE; 1776 ccb->pcmd->result = 1777 DID_NO_CONNECT << 16; 1778 arcmsr_ccb_complete(ccb, 1); 1779 } 1780 break; 1781 1782 case ARCMSR_DEV_ABORTED: 1783 1784 case ARCMSR_DEV_INIT_FAIL: { 1785 acb->devstate[id][lun] = 1786 ARECA_RAID_GONE; 1787 ccb->pcmd->result = 1788 DID_BAD_TARGET << 16; 1789 arcmsr_ccb_complete(ccb, 1); 1790 } 1791 break; 1792 1793 case ARCMSR_DEV_CHECK_CONDITION: { 1794 acb->devstate[id][lun] = 1795 ARECA_RAID_GOOD; 1796 arcmsr_report_sense_info(ccb); 1797 arcmsr_ccb_complete(ccb, 1); 1798 } 1799 break; 1800 1801 default: 1802 printk(KERN_NOTICE "arcmsr%d: \ 1803 scsi id = %d lun = %d" 1804 " polling and \ 1805 getting command error done" 1806 "but got unknown \ 1807 DeviceStatus = 0x%x \n" 1808 , acb->host->host_no, 1809 id, lun, ccb->arcmsr_cdb.DeviceStatus); 1810 acb->devstate[id][lun] = 1811 ARECA_RAID_GONE; 1812 ccb->pcmd->result = 1813 DID_BAD_TARGET << 16; 1814 arcmsr_ccb_complete(ccb, 1); 1815 break; 1816 } 1817 } 1818 found = 1; 1819 } 1820 } 1821 if (found){ 1822 outbound_intstatus = readl(®->outbound_intstatus) & 1823 acb->outbound_int_enable; 1824 writel(outbound_intstatus, ®->outbound_intstatus); 1825 /*clear interrupt*/ 1826 } 1827 return; 1828 } 1829 1830 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 1831 pci_channel_state_t state) 1832 { 1833 switch (state) { 1834 case pci_channel_io_frozen: 1835 arcmsr_pci_ers_need_reset_forepart(pdev); 1836 return PCI_ERS_RESULT_NEED_RESET; 1837 case pci_channel_io_perm_failure: 1838 arcmsr_pci_ers_disconnect_forepart(pdev); 1839 return PCI_ERS_RESULT_DISCONNECT; 1840 break; 1841 default: 1842 return PCI_ERS_RESULT_NEED_RESET; 1843 } 1844 } 1845