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: support@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 <support@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, 80 struct scsi_cmnd *cmd); 81 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb); 82 static int arcmsr_abort(struct scsi_cmnd *); 83 static int arcmsr_bus_reset(struct scsi_cmnd *); 84 static int arcmsr_bios_param(struct scsi_device *sdev, 85 struct block_device *bdev, sector_t capacity, int *info); 86 static int arcmsr_queue_command(struct scsi_cmnd *cmd, 87 void (*done) (struct scsi_cmnd *)); 88 static int arcmsr_probe(struct pci_dev *pdev, 89 const struct pci_device_id *id); 90 static void arcmsr_remove(struct pci_dev *pdev); 91 static void arcmsr_shutdown(struct pci_dev *pdev); 92 static void arcmsr_iop_init(struct AdapterControlBlock *acb); 93 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb); 94 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb); 95 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb); 96 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb); 97 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb); 98 static const char *arcmsr_info(struct Scsi_Host *); 99 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb); 100 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, 101 int queue_depth) 102 { 103 if (queue_depth > ARCMSR_MAX_CMD_PERLUN) 104 queue_depth = ARCMSR_MAX_CMD_PERLUN; 105 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); 106 return queue_depth; 107 } 108 109 static struct scsi_host_template arcmsr_scsi_host_template = { 110 .module = THIS_MODULE, 111 .name = "ARCMSR ARECA SATA/SAS RAID HOST Adapter" 112 ARCMSR_DRIVER_VERSION, 113 .info = arcmsr_info, 114 .queuecommand = arcmsr_queue_command, 115 .eh_abort_handler = arcmsr_abort, 116 .eh_bus_reset_handler = arcmsr_bus_reset, 117 .bios_param = arcmsr_bios_param, 118 .change_queue_depth = arcmsr_adjust_disk_queue_depth, 119 .can_queue = ARCMSR_MAX_OUTSTANDING_CMD, 120 .this_id = ARCMSR_SCSI_INITIATOR_ID, 121 .sg_tablesize = ARCMSR_MAX_SG_ENTRIES, 122 .max_sectors = ARCMSR_MAX_XFER_SECTORS, 123 .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN, 124 .use_clustering = ENABLE_CLUSTERING, 125 .shost_attrs = arcmsr_host_attrs, 126 }; 127 #ifdef CONFIG_SCSI_ARCMSR_AER 128 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev); 129 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 130 pci_channel_state_t state); 131 132 static struct pci_error_handlers arcmsr_pci_error_handlers = { 133 .error_detected = arcmsr_pci_error_detected, 134 .slot_reset = arcmsr_pci_slot_reset, 135 }; 136 #endif 137 static struct pci_device_id arcmsr_device_id_table[] = { 138 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)}, 139 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)}, 140 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)}, 141 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)}, 142 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)}, 143 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)}, 144 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)}, 145 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)}, 146 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)}, 147 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)}, 148 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)}, 149 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)}, 150 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)}, 151 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)}, 152 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)}, 153 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)}, 154 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)}, 155 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)}, 156 {0, 0}, /* Terminating entry */ 157 }; 158 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table); 159 static struct pci_driver arcmsr_pci_driver = { 160 .name = "arcmsr", 161 .id_table = arcmsr_device_id_table, 162 .probe = arcmsr_probe, 163 .remove = arcmsr_remove, 164 .shutdown = arcmsr_shutdown, 165 #ifdef CONFIG_SCSI_ARCMSR_AER 166 .err_handler = &arcmsr_pci_error_handlers, 167 #endif 168 }; 169 170 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id) 171 { 172 irqreturn_t handle_state; 173 struct AdapterControlBlock *acb = dev_id; 174 175 spin_lock(acb->host->host_lock); 176 handle_state = arcmsr_interrupt(acb); 177 spin_unlock(acb->host->host_lock); 178 179 return handle_state; 180 } 181 182 static int arcmsr_bios_param(struct scsi_device *sdev, 183 struct block_device *bdev, sector_t capacity, int *geom) 184 { 185 int ret, heads, sectors, cylinders, total_capacity; 186 unsigned char *buffer;/* return copy of block device's partition table */ 187 188 buffer = scsi_bios_ptable(bdev); 189 if (buffer) { 190 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]); 191 kfree(buffer); 192 if (ret != -1) 193 return ret; 194 } 195 total_capacity = capacity; 196 heads = 64; 197 sectors = 32; 198 cylinders = total_capacity / (heads * sectors); 199 if (cylinders > 1024) { 200 heads = 255; 201 sectors = 63; 202 cylinders = total_capacity / (heads * sectors); 203 } 204 geom[0] = heads; 205 geom[1] = sectors; 206 geom[2] = cylinders; 207 return 0; 208 } 209 210 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb) 211 { 212 struct pci_dev *pdev = acb->pdev; 213 u16 dev_id; 214 pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id); 215 switch (dev_id) { 216 case 0x1201 : { 217 acb->adapter_type = ACB_ADAPTER_TYPE_B; 218 } 219 break; 220 221 default : acb->adapter_type = ACB_ADAPTER_TYPE_A; 222 } 223 } 224 225 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb) 226 { 227 228 switch (acb->adapter_type) { 229 230 case ACB_ADAPTER_TYPE_A: { 231 struct pci_dev *pdev = acb->pdev; 232 void *dma_coherent; 233 dma_addr_t dma_coherent_handle, dma_addr; 234 struct CommandControlBlock *ccb_tmp; 235 uint32_t intmask_org; 236 int i, j; 237 238 acb->pmuA = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); 239 if (!acb->pmuA) { 240 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", 241 acb->host->host_no); 242 return -ENOMEM; 243 } 244 245 dma_coherent = dma_alloc_coherent(&pdev->dev, 246 ARCMSR_MAX_FREECCB_NUM * 247 sizeof (struct CommandControlBlock) + 0x20, 248 &dma_coherent_handle, GFP_KERNEL); 249 250 if (!dma_coherent) { 251 iounmap(acb->pmuA); 252 return -ENOMEM; 253 } 254 255 acb->dma_coherent = dma_coherent; 256 acb->dma_coherent_handle = dma_coherent_handle; 257 258 if (((unsigned long)dma_coherent & 0x1F)) { 259 dma_coherent = dma_coherent + 260 (0x20 - ((unsigned long)dma_coherent & 0x1F)); 261 dma_coherent_handle = dma_coherent_handle + 262 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); 263 } 264 265 dma_addr = dma_coherent_handle; 266 ccb_tmp = (struct CommandControlBlock *)dma_coherent; 267 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 268 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; 269 ccb_tmp->acb = acb; 270 acb->pccb_pool[i] = ccb_tmp; 271 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); 272 dma_addr = dma_addr + sizeof(struct CommandControlBlock); 273 ccb_tmp++; 274 } 275 276 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; 277 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 278 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 279 acb->devstate[i][j] = ARECA_RAID_GONE; 280 281 /* 282 ** here we need to tell iop 331 our ccb_tmp.HighPart 283 ** if ccb_tmp.HighPart is not zero 284 */ 285 intmask_org = arcmsr_disable_outbound_ints(acb); 286 } 287 break; 288 289 case ACB_ADAPTER_TYPE_B: { 290 291 struct pci_dev *pdev = acb->pdev; 292 struct MessageUnit_B *reg; 293 void __iomem *mem_base0, *mem_base1; 294 void *dma_coherent; 295 dma_addr_t dma_coherent_handle, dma_addr; 296 uint32_t intmask_org; 297 struct CommandControlBlock *ccb_tmp; 298 int i, j; 299 300 dma_coherent = dma_alloc_coherent(&pdev->dev, 301 ((ARCMSR_MAX_FREECCB_NUM * 302 sizeof(struct CommandControlBlock) + 0x20) + 303 sizeof(struct MessageUnit_B)), 304 &dma_coherent_handle, GFP_KERNEL); 305 if (!dma_coherent) 306 return -ENOMEM; 307 308 acb->dma_coherent = dma_coherent; 309 acb->dma_coherent_handle = dma_coherent_handle; 310 311 if (((unsigned long)dma_coherent & 0x1F)) { 312 dma_coherent = dma_coherent + 313 (0x20 - ((unsigned long)dma_coherent & 0x1F)); 314 dma_coherent_handle = dma_coherent_handle + 315 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); 316 } 317 318 reg = (struct MessageUnit_B *)(dma_coherent + 319 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock)); 320 321 dma_addr = dma_coherent_handle; 322 ccb_tmp = (struct CommandControlBlock *)dma_coherent; 323 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 324 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; 325 ccb_tmp->acb = acb; 326 acb->pccb_pool[i] = ccb_tmp; 327 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); 328 dma_addr = dma_addr + sizeof(struct CommandControlBlock); 329 ccb_tmp++; 330 } 331 332 reg = (struct MessageUnit_B *)(dma_coherent + 333 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock)); 334 acb->pmuB = reg; 335 mem_base0 = ioremap(pci_resource_start(pdev, 0), 336 pci_resource_len(pdev, 0)); 337 if (!mem_base0) 338 goto out; 339 340 mem_base1 = ioremap(pci_resource_start(pdev, 2), 341 pci_resource_len(pdev, 2)); 342 if (!mem_base1) { 343 iounmap(mem_base0); 344 goto out; 345 } 346 347 reg->drv2iop_doorbell_reg = mem_base0 + ARCMSR_DRV2IOP_DOORBELL; 348 reg->drv2iop_doorbell_mask_reg = mem_base0 + 349 ARCMSR_DRV2IOP_DOORBELL_MASK; 350 reg->iop2drv_doorbell_reg = mem_base0 + ARCMSR_IOP2DRV_DOORBELL; 351 reg->iop2drv_doorbell_mask_reg = mem_base0 + 352 ARCMSR_IOP2DRV_DOORBELL_MASK; 353 reg->ioctl_wbuffer_reg = mem_base1 + ARCMSR_IOCTL_WBUFFER; 354 reg->ioctl_rbuffer_reg = mem_base1 + ARCMSR_IOCTL_RBUFFER; 355 reg->msgcode_rwbuffer_reg = mem_base1 + ARCMSR_MSGCODE_RWBUFFER; 356 357 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; 358 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 359 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 360 acb->devstate[i][j] = ARECA_RAID_GOOD; 361 362 /* 363 ** here we need to tell iop 331 our ccb_tmp.HighPart 364 ** if ccb_tmp.HighPart is not zero 365 */ 366 intmask_org = arcmsr_disable_outbound_ints(acb); 367 } 368 break; 369 } 370 return 0; 371 372 out: 373 dma_free_coherent(&acb->pdev->dev, 374 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20, 375 acb->dma_coherent, acb->dma_coherent_handle); 376 return -ENOMEM; 377 } 378 379 static int arcmsr_probe(struct pci_dev *pdev, 380 const struct pci_device_id *id) 381 { 382 struct Scsi_Host *host; 383 struct AdapterControlBlock *acb; 384 uint8_t bus, dev_fun; 385 int error; 386 387 error = pci_enable_device(pdev); 388 if (error) 389 goto out; 390 pci_set_master(pdev); 391 392 host = scsi_host_alloc(&arcmsr_scsi_host_template, 393 sizeof(struct AdapterControlBlock)); 394 if (!host) { 395 error = -ENOMEM; 396 goto out_disable_device; 397 } 398 acb = (struct AdapterControlBlock *)host->hostdata; 399 memset(acb, 0, sizeof (struct AdapterControlBlock)); 400 401 error = pci_set_dma_mask(pdev, DMA_64BIT_MASK); 402 if (error) { 403 error = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 404 if (error) { 405 printk(KERN_WARNING 406 "scsi%d: No suitable DMA mask available\n", 407 host->host_no); 408 goto out_host_put; 409 } 410 } 411 bus = pdev->bus->number; 412 dev_fun = pdev->devfn; 413 acb->host = host; 414 acb->pdev = pdev; 415 host->max_sectors = ARCMSR_MAX_XFER_SECTORS; 416 host->max_lun = ARCMSR_MAX_TARGETLUN; 417 host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/ 418 host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/ 419 host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES; 420 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */ 421 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN; 422 host->this_id = ARCMSR_SCSI_INITIATOR_ID; 423 host->unique_id = (bus << 8) | dev_fun; 424 host->irq = pdev->irq; 425 error = pci_request_regions(pdev, "arcmsr"); 426 if (error) { 427 goto out_host_put; 428 } 429 arcmsr_define_adapter_type(acb); 430 431 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 432 ACB_F_MESSAGE_RQBUFFER_CLEARED | 433 ACB_F_MESSAGE_WQBUFFER_READED); 434 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 435 INIT_LIST_HEAD(&acb->ccb_free_list); 436 437 error = arcmsr_alloc_ccb_pool(acb); 438 if (error) 439 goto out_release_regions; 440 441 error = request_irq(pdev->irq, arcmsr_do_interrupt, 442 IRQF_SHARED, "arcmsr", acb); 443 if (error) 444 goto out_free_ccb_pool; 445 446 arcmsr_iop_init(acb); 447 pci_set_drvdata(pdev, host); 448 if (strncmp(acb->firm_version, "V1.42", 5) >= 0) 449 host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B; 450 451 error = scsi_add_host(host, &pdev->dev); 452 if (error) 453 goto out_free_irq; 454 455 error = arcmsr_alloc_sysfs_attr(acb); 456 if (error) 457 goto out_free_sysfs; 458 459 scsi_scan_host(host); 460 #ifdef CONFIG_SCSI_ARCMSR_AER 461 pci_enable_pcie_error_reporting(pdev); 462 #endif 463 return 0; 464 out_free_sysfs: 465 out_free_irq: 466 free_irq(pdev->irq, acb); 467 out_free_ccb_pool: 468 arcmsr_free_ccb_pool(acb); 469 out_release_regions: 470 pci_release_regions(pdev); 471 out_host_put: 472 scsi_host_put(host); 473 out_disable_device: 474 pci_disable_device(pdev); 475 out: 476 return error; 477 } 478 479 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb) 480 { 481 struct MessageUnit_A __iomem *reg = acb->pmuA; 482 uint32_t Index; 483 uint8_t Retries = 0x00; 484 485 do { 486 for (Index = 0; Index < 100; Index++) { 487 if (readl(®->outbound_intstatus) & 488 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) { 489 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, 490 ®->outbound_intstatus); 491 return 0x00; 492 } 493 msleep(10); 494 }/*max 1 seconds*/ 495 496 } while (Retries++ < 20);/*max 20 sec*/ 497 return 0xff; 498 } 499 500 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb) 501 { 502 struct MessageUnit_B *reg = acb->pmuB; 503 uint32_t Index; 504 uint8_t Retries = 0x00; 505 506 do { 507 for (Index = 0; Index < 100; Index++) { 508 if (readl(reg->iop2drv_doorbell_reg) 509 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) { 510 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN 511 , reg->iop2drv_doorbell_reg); 512 return 0x00; 513 } 514 msleep(10); 515 }/*max 1 seconds*/ 516 517 } while (Retries++ < 20);/*max 20 sec*/ 518 return 0xff; 519 } 520 521 static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb) 522 { 523 struct MessageUnit_A __iomem *reg = acb->pmuA; 524 525 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0); 526 if (arcmsr_hba_wait_msgint_ready(acb)) 527 printk(KERN_NOTICE 528 "arcmsr%d: wait 'abort all outstanding command' timeout \n" 529 , acb->host->host_no); 530 } 531 532 static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb) 533 { 534 struct MessageUnit_B *reg = acb->pmuB; 535 536 writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg); 537 if (arcmsr_hbb_wait_msgint_ready(acb)) 538 printk(KERN_NOTICE 539 "arcmsr%d: wait 'abort all outstanding command' timeout \n" 540 , acb->host->host_no); 541 } 542 543 static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb) 544 { 545 switch (acb->adapter_type) { 546 case ACB_ADAPTER_TYPE_A: { 547 arcmsr_abort_hba_allcmd(acb); 548 } 549 break; 550 551 case ACB_ADAPTER_TYPE_B: { 552 arcmsr_abort_hbb_allcmd(acb); 553 } 554 } 555 } 556 557 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb) 558 { 559 struct scsi_cmnd *pcmd = ccb->pcmd; 560 561 scsi_dma_unmap(pcmd); 562 } 563 564 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag) 565 { 566 struct AdapterControlBlock *acb = ccb->acb; 567 struct scsi_cmnd *pcmd = ccb->pcmd; 568 569 arcmsr_pci_unmap_dma(ccb); 570 if (stand_flag == 1) 571 atomic_dec(&acb->ccboutstandingcount); 572 ccb->startdone = ARCMSR_CCB_DONE; 573 ccb->ccb_flags = 0; 574 list_add_tail(&ccb->list, &acb->ccb_free_list); 575 pcmd->scsi_done(pcmd); 576 } 577 578 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb) 579 { 580 struct MessageUnit_A __iomem *reg = acb->pmuA; 581 int retry_count = 30; 582 583 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0); 584 do { 585 if (!arcmsr_hba_wait_msgint_ready(acb)) 586 break; 587 else { 588 retry_count--; 589 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ 590 timeout, retry count down = %d \n", acb->host->host_no, retry_count); 591 } 592 } while (retry_count != 0); 593 } 594 595 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb) 596 { 597 struct MessageUnit_B *reg = acb->pmuB; 598 int retry_count = 30; 599 600 writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg); 601 do { 602 if (!arcmsr_hbb_wait_msgint_ready(acb)) 603 break; 604 else { 605 retry_count--; 606 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ 607 timeout,retry count down = %d \n", acb->host->host_no, retry_count); 608 } 609 } while (retry_count != 0); 610 } 611 612 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb) 613 { 614 switch (acb->adapter_type) { 615 616 case ACB_ADAPTER_TYPE_A: { 617 arcmsr_flush_hba_cache(acb); 618 } 619 break; 620 621 case ACB_ADAPTER_TYPE_B: { 622 arcmsr_flush_hbb_cache(acb); 623 } 624 } 625 } 626 627 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb) 628 { 629 630 struct scsi_cmnd *pcmd = ccb->pcmd; 631 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer; 632 633 pcmd->result = DID_OK << 16; 634 if (sensebuffer) { 635 int sense_data_length = 636 sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE 637 ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE; 638 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE); 639 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length); 640 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS; 641 sensebuffer->Valid = 1; 642 } 643 } 644 645 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb) 646 { 647 u32 orig_mask = 0; 648 switch (acb->adapter_type) { 649 650 case ACB_ADAPTER_TYPE_A : { 651 struct MessageUnit_A __iomem *reg = acb->pmuA; 652 orig_mask = readl(®->outbound_intmask)|\ 653 ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE; 654 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \ 655 ®->outbound_intmask); 656 } 657 break; 658 659 case ACB_ADAPTER_TYPE_B : { 660 struct MessageUnit_B *reg = acb->pmuB; 661 orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \ 662 (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE); 663 writel(0, reg->iop2drv_doorbell_mask_reg); 664 } 665 break; 666 } 667 return orig_mask; 668 } 669 670 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \ 671 struct CommandControlBlock *ccb, uint32_t flag_ccb) 672 { 673 674 uint8_t id, lun; 675 id = ccb->pcmd->device->id; 676 lun = ccb->pcmd->device->lun; 677 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) { 678 if (acb->devstate[id][lun] == ARECA_RAID_GONE) 679 acb->devstate[id][lun] = ARECA_RAID_GOOD; 680 ccb->pcmd->result = DID_OK << 16; 681 arcmsr_ccb_complete(ccb, 1); 682 } else { 683 switch (ccb->arcmsr_cdb.DeviceStatus) { 684 case ARCMSR_DEV_SELECT_TIMEOUT: { 685 acb->devstate[id][lun] = ARECA_RAID_GONE; 686 ccb->pcmd->result = DID_NO_CONNECT << 16; 687 arcmsr_ccb_complete(ccb, 1); 688 } 689 break; 690 691 case ARCMSR_DEV_ABORTED: 692 693 case ARCMSR_DEV_INIT_FAIL: { 694 acb->devstate[id][lun] = ARECA_RAID_GONE; 695 ccb->pcmd->result = DID_BAD_TARGET << 16; 696 arcmsr_ccb_complete(ccb, 1); 697 } 698 break; 699 700 case ARCMSR_DEV_CHECK_CONDITION: { 701 acb->devstate[id][lun] = ARECA_RAID_GOOD; 702 arcmsr_report_sense_info(ccb); 703 arcmsr_ccb_complete(ccb, 1); 704 } 705 break; 706 707 default: 708 printk(KERN_NOTICE 709 "arcmsr%d: scsi id = %d lun = %d" 710 " isr get command error done, " 711 "but got unknown DeviceStatus = 0x%x \n" 712 , acb->host->host_no 713 , id 714 , lun 715 , ccb->arcmsr_cdb.DeviceStatus); 716 acb->devstate[id][lun] = ARECA_RAID_GONE; 717 ccb->pcmd->result = DID_NO_CONNECT << 16; 718 arcmsr_ccb_complete(ccb, 1); 719 break; 720 } 721 } 722 } 723 724 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb) 725 726 { 727 struct CommandControlBlock *ccb; 728 729 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); 730 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 731 if (ccb->startdone == ARCMSR_CCB_ABORTED) { 732 struct scsi_cmnd *abortcmd = ccb->pcmd; 733 if (abortcmd) { 734 abortcmd->result |= DID_ABORT << 16; 735 arcmsr_ccb_complete(ccb, 1); 736 printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \ 737 isr got aborted command \n", acb->host->host_no, ccb); 738 } 739 } 740 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \ 741 done acb = '0x%p'" 742 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x" 743 " ccboutstandingcount = %d \n" 744 , acb->host->host_no 745 , acb 746 , ccb 747 , ccb->acb 748 , ccb->startdone 749 , atomic_read(&acb->ccboutstandingcount)); 750 } 751 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 752 } 753 754 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb) 755 { 756 int i = 0; 757 uint32_t flag_ccb; 758 759 switch (acb->adapter_type) { 760 761 case ACB_ADAPTER_TYPE_A: { 762 struct MessageUnit_A __iomem *reg = acb->pmuA; 763 uint32_t outbound_intstatus; 764 outbound_intstatus = readl(®->outbound_intstatus) & 765 acb->outbound_int_enable; 766 /*clear and abort all outbound posted Q*/ 767 writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ 768 while (((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) 769 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) { 770 arcmsr_drain_donequeue(acb, flag_ccb); 771 } 772 } 773 break; 774 775 case ACB_ADAPTER_TYPE_B: { 776 struct MessageUnit_B *reg = acb->pmuB; 777 /*clear all outbound posted Q*/ 778 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) { 779 if ((flag_ccb = readl(®->done_qbuffer[i])) != 0) { 780 writel(0, ®->done_qbuffer[i]); 781 arcmsr_drain_donequeue(acb, flag_ccb); 782 } 783 writel(0, ®->post_qbuffer[i]); 784 } 785 reg->doneq_index = 0; 786 reg->postq_index = 0; 787 } 788 break; 789 } 790 } 791 static void arcmsr_remove(struct pci_dev *pdev) 792 { 793 struct Scsi_Host *host = pci_get_drvdata(pdev); 794 struct AdapterControlBlock *acb = 795 (struct AdapterControlBlock *) host->hostdata; 796 int poll_count = 0; 797 798 arcmsr_free_sysfs_attr(acb); 799 scsi_remove_host(host); 800 arcmsr_stop_adapter_bgrb(acb); 801 arcmsr_flush_adapter_cache(acb); 802 arcmsr_disable_outbound_ints(acb); 803 acb->acb_flags |= ACB_F_SCSISTOPADAPTER; 804 acb->acb_flags &= ~ACB_F_IOP_INITED; 805 806 for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) { 807 if (!atomic_read(&acb->ccboutstandingcount)) 808 break; 809 arcmsr_interrupt(acb);/* FIXME: need spinlock */ 810 msleep(25); 811 } 812 813 if (atomic_read(&acb->ccboutstandingcount)) { 814 int i; 815 816 arcmsr_abort_allcmd(acb); 817 arcmsr_done4abort_postqueue(acb); 818 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 819 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 820 if (ccb->startdone == ARCMSR_CCB_START) { 821 ccb->startdone = ARCMSR_CCB_ABORTED; 822 ccb->pcmd->result = DID_ABORT << 16; 823 arcmsr_ccb_complete(ccb, 1); 824 } 825 } 826 } 827 828 free_irq(pdev->irq, acb); 829 arcmsr_free_ccb_pool(acb); 830 pci_release_regions(pdev); 831 832 scsi_host_put(host); 833 834 pci_disable_device(pdev); 835 pci_set_drvdata(pdev, NULL); 836 } 837 838 static void arcmsr_shutdown(struct pci_dev *pdev) 839 { 840 struct Scsi_Host *host = pci_get_drvdata(pdev); 841 struct AdapterControlBlock *acb = 842 (struct AdapterControlBlock *)host->hostdata; 843 844 arcmsr_stop_adapter_bgrb(acb); 845 arcmsr_flush_adapter_cache(acb); 846 } 847 848 static int arcmsr_module_init(void) 849 { 850 int error = 0; 851 852 error = pci_register_driver(&arcmsr_pci_driver); 853 return error; 854 } 855 856 static void arcmsr_module_exit(void) 857 { 858 pci_unregister_driver(&arcmsr_pci_driver); 859 } 860 module_init(arcmsr_module_init); 861 module_exit(arcmsr_module_exit); 862 863 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \ 864 u32 intmask_org) 865 { 866 u32 mask; 867 868 switch (acb->adapter_type) { 869 870 case ACB_ADAPTER_TYPE_A : { 871 struct MessageUnit_A __iomem *reg = acb->pmuA; 872 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE | 873 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE); 874 writel(mask, ®->outbound_intmask); 875 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff; 876 } 877 break; 878 879 case ACB_ADAPTER_TYPE_B : { 880 struct MessageUnit_B *reg = acb->pmuB; 881 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \ 882 ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE); 883 writel(mask, reg->iop2drv_doorbell_mask_reg); 884 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f; 885 } 886 } 887 } 888 889 static void arcmsr_build_ccb(struct AdapterControlBlock *acb, 890 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd) 891 { 892 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 893 int8_t *psge = (int8_t *)&arcmsr_cdb->u; 894 __le32 address_lo, address_hi; 895 int arccdbsize = 0x30; 896 int nseg; 897 898 ccb->pcmd = pcmd; 899 memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB)); 900 arcmsr_cdb->Bus = 0; 901 arcmsr_cdb->TargetID = pcmd->device->id; 902 arcmsr_cdb->LUN = pcmd->device->lun; 903 arcmsr_cdb->Function = 1; 904 arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len; 905 arcmsr_cdb->Context = (unsigned long)arcmsr_cdb; 906 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len); 907 908 nseg = scsi_dma_map(pcmd); 909 BUG_ON(nseg < 0); 910 911 if (nseg) { 912 __le32 length; 913 int i, cdb_sgcount = 0; 914 struct scatterlist *sg; 915 916 /* map stor port SG list to our iop SG List. */ 917 scsi_for_each_sg(pcmd, sg, nseg, i) { 918 /* Get the physical address of the current data pointer */ 919 length = cpu_to_le32(sg_dma_len(sg)); 920 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg))); 921 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg))); 922 if (address_hi == 0) { 923 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge; 924 925 pdma_sg->address = address_lo; 926 pdma_sg->length = length; 927 psge += sizeof (struct SG32ENTRY); 928 arccdbsize += sizeof (struct SG32ENTRY); 929 } else { 930 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge; 931 932 pdma_sg->addresshigh = address_hi; 933 pdma_sg->address = address_lo; 934 pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR); 935 psge += sizeof (struct SG64ENTRY); 936 arccdbsize += sizeof (struct SG64ENTRY); 937 } 938 cdb_sgcount++; 939 } 940 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount; 941 arcmsr_cdb->DataLength = scsi_bufflen(pcmd); 942 if ( arccdbsize > 256) 943 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE; 944 } 945 if (pcmd->sc_data_direction == DMA_TO_DEVICE ) { 946 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE; 947 ccb->ccb_flags |= CCB_FLAG_WRITE; 948 } 949 } 950 951 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb) 952 { 953 uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr; 954 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 955 atomic_inc(&acb->ccboutstandingcount); 956 ccb->startdone = ARCMSR_CCB_START; 957 958 switch (acb->adapter_type) { 959 case ACB_ADAPTER_TYPE_A: { 960 struct MessageUnit_A __iomem *reg = acb->pmuA; 961 962 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) 963 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE, 964 ®->inbound_queueport); 965 else { 966 writel(cdb_shifted_phyaddr, ®->inbound_queueport); 967 } 968 } 969 break; 970 971 case ACB_ADAPTER_TYPE_B: { 972 struct MessageUnit_B *reg = acb->pmuB; 973 uint32_t ending_index, index = reg->postq_index; 974 975 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE); 976 writel(0, ®->post_qbuffer[ending_index]); 977 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) { 978 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\ 979 ®->post_qbuffer[index]); 980 } 981 else { 982 writel(cdb_shifted_phyaddr, ®->post_qbuffer[index]); 983 } 984 index++; 985 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */ 986 reg->postq_index = index; 987 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell_reg); 988 } 989 break; 990 } 991 } 992 993 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb) 994 { 995 struct MessageUnit_A __iomem *reg = acb->pmuA; 996 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 997 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, ®->inbound_msgaddr0); 998 999 if (arcmsr_hba_wait_msgint_ready(acb)) { 1000 printk(KERN_NOTICE 1001 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" 1002 , acb->host->host_no); 1003 } 1004 } 1005 1006 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb) 1007 { 1008 struct MessageUnit_B *reg = acb->pmuB; 1009 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 1010 writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg); 1011 1012 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1013 printk(KERN_NOTICE 1014 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" 1015 , acb->host->host_no); 1016 } 1017 } 1018 1019 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb) 1020 { 1021 switch (acb->adapter_type) { 1022 case ACB_ADAPTER_TYPE_A: { 1023 arcmsr_stop_hba_bgrb(acb); 1024 } 1025 break; 1026 1027 case ACB_ADAPTER_TYPE_B: { 1028 arcmsr_stop_hbb_bgrb(acb); 1029 } 1030 break; 1031 } 1032 } 1033 1034 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb) 1035 { 1036 switch (acb->adapter_type) { 1037 case ACB_ADAPTER_TYPE_A: { 1038 iounmap(acb->pmuA); 1039 break; 1040 } 1041 case ACB_ADAPTER_TYPE_B: { 1042 struct MessageUnit_B *reg = acb->pmuB; 1043 iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL); 1044 iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER); 1045 } 1046 } 1047 dma_free_coherent(&acb->pdev->dev, 1048 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20, 1049 acb->dma_coherent, 1050 acb->dma_coherent_handle); 1051 } 1052 1053 void arcmsr_iop_message_read(struct AdapterControlBlock *acb) 1054 { 1055 switch (acb->adapter_type) { 1056 case ACB_ADAPTER_TYPE_A: { 1057 struct MessageUnit_A __iomem *reg = acb->pmuA; 1058 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); 1059 } 1060 break; 1061 1062 case ACB_ADAPTER_TYPE_B: { 1063 struct MessageUnit_B *reg = acb->pmuB; 1064 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); 1065 } 1066 break; 1067 } 1068 } 1069 1070 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb) 1071 { 1072 switch (acb->adapter_type) { 1073 case ACB_ADAPTER_TYPE_A: { 1074 struct MessageUnit_A __iomem *reg = acb->pmuA; 1075 /* 1076 ** push inbound doorbell tell iop, driver data write ok 1077 ** and wait reply on next hwinterrupt for next Qbuffer post 1078 */ 1079 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, ®->inbound_doorbell); 1080 } 1081 break; 1082 1083 case ACB_ADAPTER_TYPE_B: { 1084 struct MessageUnit_B *reg = acb->pmuB; 1085 /* 1086 ** push inbound doorbell tell iop, driver data write ok 1087 ** and wait reply on next hwinterrupt for next Qbuffer post 1088 */ 1089 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell_reg); 1090 } 1091 break; 1092 } 1093 } 1094 1095 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb) 1096 { 1097 struct QBUFFER __iomem *qbuffer = NULL; 1098 1099 switch (acb->adapter_type) { 1100 1101 case ACB_ADAPTER_TYPE_A: { 1102 struct MessageUnit_A __iomem *reg = acb->pmuA; 1103 qbuffer = (struct QBUFFER __iomem *)®->message_rbuffer; 1104 } 1105 break; 1106 1107 case ACB_ADAPTER_TYPE_B: { 1108 struct MessageUnit_B *reg = acb->pmuB; 1109 qbuffer = (struct QBUFFER __iomem *)reg->ioctl_rbuffer_reg; 1110 } 1111 break; 1112 } 1113 return qbuffer; 1114 } 1115 1116 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb) 1117 { 1118 struct QBUFFER __iomem *pqbuffer = NULL; 1119 1120 switch (acb->adapter_type) { 1121 1122 case ACB_ADAPTER_TYPE_A: { 1123 struct MessageUnit_A __iomem *reg = acb->pmuA; 1124 pqbuffer = (struct QBUFFER __iomem *) ®->message_wbuffer; 1125 } 1126 break; 1127 1128 case ACB_ADAPTER_TYPE_B: { 1129 struct MessageUnit_B *reg = acb->pmuB; 1130 pqbuffer = (struct QBUFFER __iomem *)reg->ioctl_wbuffer_reg; 1131 } 1132 break; 1133 } 1134 return pqbuffer; 1135 } 1136 1137 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb) 1138 { 1139 struct QBUFFER __iomem *prbuffer; 1140 struct QBUFFER *pQbuffer; 1141 uint8_t __iomem *iop_data; 1142 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex; 1143 1144 rqbuf_lastindex = acb->rqbuf_lastindex; 1145 rqbuf_firstindex = acb->rqbuf_firstindex; 1146 prbuffer = arcmsr_get_iop_rqbuffer(acb); 1147 iop_data = (uint8_t __iomem *)prbuffer->data; 1148 iop_len = prbuffer->data_len; 1149 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex -1)&(ARCMSR_MAX_QBUFFER -1); 1150 1151 if (my_empty_len >= iop_len) 1152 { 1153 while (iop_len > 0) { 1154 pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex]; 1155 memcpy(pQbuffer, iop_data,1); 1156 rqbuf_lastindex++; 1157 rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1158 iop_data++; 1159 iop_len--; 1160 } 1161 acb->rqbuf_lastindex = rqbuf_lastindex; 1162 arcmsr_iop_message_read(acb); 1163 } 1164 1165 else { 1166 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW; 1167 } 1168 } 1169 1170 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb) 1171 { 1172 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED; 1173 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) { 1174 uint8_t *pQbuffer; 1175 struct QBUFFER __iomem *pwbuffer; 1176 uint8_t __iomem *iop_data; 1177 int32_t allxfer_len = 0; 1178 1179 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 1180 pwbuffer = arcmsr_get_iop_wqbuffer(acb); 1181 iop_data = (uint8_t __iomem *)pwbuffer->data; 1182 1183 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \ 1184 (allxfer_len < 124)) { 1185 pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex]; 1186 memcpy(iop_data, pQbuffer, 1); 1187 acb->wqbuf_firstindex++; 1188 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1189 iop_data++; 1190 allxfer_len++; 1191 } 1192 pwbuffer->data_len = allxfer_len; 1193 1194 arcmsr_iop_message_wrote(acb); 1195 } 1196 1197 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) { 1198 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED; 1199 } 1200 } 1201 1202 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb) 1203 { 1204 uint32_t outbound_doorbell; 1205 struct MessageUnit_A __iomem *reg = acb->pmuA; 1206 1207 outbound_doorbell = readl(®->outbound_doorbell); 1208 writel(outbound_doorbell, ®->outbound_doorbell); 1209 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) { 1210 arcmsr_iop2drv_data_wrote_handle(acb); 1211 } 1212 1213 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) { 1214 arcmsr_iop2drv_data_read_handle(acb); 1215 } 1216 } 1217 1218 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb) 1219 { 1220 uint32_t flag_ccb; 1221 struct MessageUnit_A __iomem *reg = acb->pmuA; 1222 1223 while ((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) { 1224 arcmsr_drain_donequeue(acb, flag_ccb); 1225 } 1226 } 1227 1228 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb) 1229 { 1230 uint32_t index; 1231 uint32_t flag_ccb; 1232 struct MessageUnit_B *reg = acb->pmuB; 1233 1234 index = reg->doneq_index; 1235 1236 while ((flag_ccb = readl(®->done_qbuffer[index])) != 0) { 1237 writel(0, ®->done_qbuffer[index]); 1238 arcmsr_drain_donequeue(acb, flag_ccb); 1239 index++; 1240 index %= ARCMSR_MAX_HBB_POSTQUEUE; 1241 reg->doneq_index = index; 1242 } 1243 } 1244 1245 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb) 1246 { 1247 uint32_t outbound_intstatus; 1248 struct MessageUnit_A __iomem *reg = acb->pmuA; 1249 1250 outbound_intstatus = readl(®->outbound_intstatus) & \ 1251 acb->outbound_int_enable; 1252 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) { 1253 return 1; 1254 } 1255 writel(outbound_intstatus, ®->outbound_intstatus); 1256 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) { 1257 arcmsr_hba_doorbell_isr(acb); 1258 } 1259 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) { 1260 arcmsr_hba_postqueue_isr(acb); 1261 } 1262 return 0; 1263 } 1264 1265 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb) 1266 { 1267 uint32_t outbound_doorbell; 1268 struct MessageUnit_B *reg = acb->pmuB; 1269 1270 outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \ 1271 acb->outbound_int_enable; 1272 if (!outbound_doorbell) 1273 return 1; 1274 1275 writel(~outbound_doorbell, reg->iop2drv_doorbell_reg); 1276 1277 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) { 1278 arcmsr_iop2drv_data_wrote_handle(acb); 1279 } 1280 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) { 1281 arcmsr_iop2drv_data_read_handle(acb); 1282 } 1283 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) { 1284 arcmsr_hbb_postqueue_isr(acb); 1285 } 1286 1287 return 0; 1288 } 1289 1290 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb) 1291 { 1292 switch (acb->adapter_type) { 1293 case ACB_ADAPTER_TYPE_A: { 1294 if (arcmsr_handle_hba_isr(acb)) { 1295 return IRQ_NONE; 1296 } 1297 } 1298 break; 1299 1300 case ACB_ADAPTER_TYPE_B: { 1301 if (arcmsr_handle_hbb_isr(acb)) { 1302 return IRQ_NONE; 1303 } 1304 } 1305 break; 1306 } 1307 return IRQ_HANDLED; 1308 } 1309 1310 static void arcmsr_iop_parking(struct AdapterControlBlock *acb) 1311 { 1312 if (acb) { 1313 /* stop adapter background rebuild */ 1314 if (acb->acb_flags & ACB_F_MSG_START_BGRB) { 1315 uint32_t intmask_org; 1316 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 1317 intmask_org = arcmsr_disable_outbound_ints(acb); 1318 arcmsr_stop_adapter_bgrb(acb); 1319 arcmsr_flush_adapter_cache(acb); 1320 arcmsr_enable_outbound_ints(acb, intmask_org); 1321 } 1322 } 1323 } 1324 1325 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb) 1326 { 1327 int32_t wqbuf_firstindex, wqbuf_lastindex; 1328 uint8_t *pQbuffer; 1329 struct QBUFFER __iomem *pwbuffer; 1330 uint8_t __iomem *iop_data; 1331 int32_t allxfer_len = 0; 1332 1333 pwbuffer = arcmsr_get_iop_wqbuffer(acb); 1334 iop_data = (uint8_t __iomem *)pwbuffer->data; 1335 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) { 1336 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 1337 wqbuf_firstindex = acb->wqbuf_firstindex; 1338 wqbuf_lastindex = acb->wqbuf_lastindex; 1339 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) { 1340 pQbuffer = &acb->wqbuffer[wqbuf_firstindex]; 1341 memcpy(iop_data, pQbuffer, 1); 1342 wqbuf_firstindex++; 1343 wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1344 iop_data++; 1345 allxfer_len++; 1346 } 1347 acb->wqbuf_firstindex = wqbuf_firstindex; 1348 pwbuffer->data_len = allxfer_len; 1349 arcmsr_iop_message_wrote(acb); 1350 } 1351 } 1352 1353 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \ 1354 struct scsi_cmnd *cmd) 1355 { 1356 struct CMD_MESSAGE_FIELD *pcmdmessagefld; 1357 int retvalue = 0, transfer_len = 0; 1358 char *buffer; 1359 struct scatterlist *sg; 1360 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 | 1361 (uint32_t ) cmd->cmnd[6] << 16 | 1362 (uint32_t ) cmd->cmnd[7] << 8 | 1363 (uint32_t ) cmd->cmnd[8]; 1364 /* 4 bytes: Areca io control code */ 1365 1366 sg = scsi_sglist(cmd); 1367 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; 1368 if (scsi_sg_count(cmd) > 1) { 1369 retvalue = ARCMSR_MESSAGE_FAIL; 1370 goto message_out; 1371 } 1372 transfer_len += sg->length; 1373 1374 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) { 1375 retvalue = ARCMSR_MESSAGE_FAIL; 1376 goto message_out; 1377 } 1378 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer; 1379 switch(controlcode) { 1380 1381 case ARCMSR_MESSAGE_READ_RQBUFFER: { 1382 unsigned long *ver_addr; 1383 dma_addr_t buf_handle; 1384 uint8_t *pQbuffer, *ptmpQbuffer; 1385 int32_t allxfer_len = 0; 1386 1387 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle); 1388 if (!ver_addr) { 1389 retvalue = ARCMSR_MESSAGE_FAIL; 1390 goto message_out; 1391 } 1392 ptmpQbuffer = (uint8_t *) ver_addr; 1393 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex) 1394 && (allxfer_len < 1031)) { 1395 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex]; 1396 memcpy(ptmpQbuffer, pQbuffer, 1); 1397 acb->rqbuf_firstindex++; 1398 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1399 ptmpQbuffer++; 1400 allxfer_len++; 1401 } 1402 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1403 1404 struct QBUFFER __iomem *prbuffer; 1405 uint8_t __iomem *iop_data; 1406 int32_t iop_len; 1407 1408 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1409 prbuffer = arcmsr_get_iop_rqbuffer(acb); 1410 iop_data = prbuffer->data; 1411 iop_len = readl(&prbuffer->data_len); 1412 while (iop_len > 0) { 1413 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data); 1414 acb->rqbuf_lastindex++; 1415 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1416 iop_data++; 1417 iop_len--; 1418 } 1419 arcmsr_iop_message_read(acb); 1420 } 1421 memcpy(pcmdmessagefld->messagedatabuffer, (uint8_t *)ver_addr, allxfer_len); 1422 pcmdmessagefld->cmdmessage.Length = allxfer_len; 1423 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1424 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle); 1425 } 1426 break; 1427 1428 case ARCMSR_MESSAGE_WRITE_WQBUFFER: { 1429 unsigned long *ver_addr; 1430 dma_addr_t buf_handle; 1431 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex; 1432 uint8_t *pQbuffer, *ptmpuserbuffer; 1433 1434 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle); 1435 if (!ver_addr) { 1436 retvalue = ARCMSR_MESSAGE_FAIL; 1437 goto message_out; 1438 } 1439 ptmpuserbuffer = (uint8_t *)ver_addr; 1440 user_len = pcmdmessagefld->cmdmessage.Length; 1441 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len); 1442 wqbuf_lastindex = acb->wqbuf_lastindex; 1443 wqbuf_firstindex = acb->wqbuf_firstindex; 1444 if (wqbuf_lastindex != wqbuf_firstindex) { 1445 struct SENSE_DATA *sensebuffer = 1446 (struct SENSE_DATA *)cmd->sense_buffer; 1447 arcmsr_post_ioctldata2iop(acb); 1448 /* has error report sensedata */ 1449 sensebuffer->ErrorCode = 0x70; 1450 sensebuffer->SenseKey = ILLEGAL_REQUEST; 1451 sensebuffer->AdditionalSenseLength = 0x0A; 1452 sensebuffer->AdditionalSenseCode = 0x20; 1453 sensebuffer->Valid = 1; 1454 retvalue = ARCMSR_MESSAGE_FAIL; 1455 } else { 1456 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1) 1457 &(ARCMSR_MAX_QBUFFER - 1); 1458 if (my_empty_len >= user_len) { 1459 while (user_len > 0) { 1460 pQbuffer = 1461 &acb->wqbuffer[acb->wqbuf_lastindex]; 1462 memcpy(pQbuffer, ptmpuserbuffer, 1); 1463 acb->wqbuf_lastindex++; 1464 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1465 ptmpuserbuffer++; 1466 user_len--; 1467 } 1468 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { 1469 acb->acb_flags &= 1470 ~ACB_F_MESSAGE_WQBUFFER_CLEARED; 1471 arcmsr_post_ioctldata2iop(acb); 1472 } 1473 } else { 1474 /* has error report sensedata */ 1475 struct SENSE_DATA *sensebuffer = 1476 (struct SENSE_DATA *)cmd->sense_buffer; 1477 sensebuffer->ErrorCode = 0x70; 1478 sensebuffer->SenseKey = ILLEGAL_REQUEST; 1479 sensebuffer->AdditionalSenseLength = 0x0A; 1480 sensebuffer->AdditionalSenseCode = 0x20; 1481 sensebuffer->Valid = 1; 1482 retvalue = ARCMSR_MESSAGE_FAIL; 1483 } 1484 } 1485 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle); 1486 } 1487 break; 1488 1489 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: { 1490 uint8_t *pQbuffer = acb->rqbuffer; 1491 1492 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1493 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1494 arcmsr_iop_message_read(acb); 1495 } 1496 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED; 1497 acb->rqbuf_firstindex = 0; 1498 acb->rqbuf_lastindex = 0; 1499 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 1500 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1501 } 1502 break; 1503 1504 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: { 1505 uint8_t *pQbuffer = acb->wqbuffer; 1506 1507 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1508 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1509 arcmsr_iop_message_read(acb); 1510 } 1511 acb->acb_flags |= 1512 (ACB_F_MESSAGE_WQBUFFER_CLEARED | 1513 ACB_F_MESSAGE_WQBUFFER_READED); 1514 acb->wqbuf_firstindex = 0; 1515 acb->wqbuf_lastindex = 0; 1516 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 1517 pcmdmessagefld->cmdmessage.ReturnCode = 1518 ARCMSR_MESSAGE_RETURNCODE_OK; 1519 } 1520 break; 1521 1522 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: { 1523 uint8_t *pQbuffer; 1524 1525 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1526 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1527 arcmsr_iop_message_read(acb); 1528 } 1529 acb->acb_flags |= 1530 (ACB_F_MESSAGE_WQBUFFER_CLEARED 1531 | ACB_F_MESSAGE_RQBUFFER_CLEARED 1532 | ACB_F_MESSAGE_WQBUFFER_READED); 1533 acb->rqbuf_firstindex = 0; 1534 acb->rqbuf_lastindex = 0; 1535 acb->wqbuf_firstindex = 0; 1536 acb->wqbuf_lastindex = 0; 1537 pQbuffer = acb->rqbuffer; 1538 memset(pQbuffer, 0, sizeof(struct QBUFFER)); 1539 pQbuffer = acb->wqbuffer; 1540 memset(pQbuffer, 0, sizeof(struct QBUFFER)); 1541 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1542 } 1543 break; 1544 1545 case ARCMSR_MESSAGE_RETURN_CODE_3F: { 1546 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F; 1547 } 1548 break; 1549 1550 case ARCMSR_MESSAGE_SAY_HELLO: { 1551 int8_t *hello_string = "Hello! I am ARCMSR"; 1552 1553 memcpy(pcmdmessagefld->messagedatabuffer, hello_string 1554 , (int16_t)strlen(hello_string)); 1555 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1556 } 1557 break; 1558 1559 case ARCMSR_MESSAGE_SAY_GOODBYE: 1560 arcmsr_iop_parking(acb); 1561 break; 1562 1563 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: 1564 arcmsr_flush_adapter_cache(acb); 1565 break; 1566 1567 default: 1568 retvalue = ARCMSR_MESSAGE_FAIL; 1569 } 1570 message_out: 1571 sg = scsi_sglist(cmd); 1572 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1573 return retvalue; 1574 } 1575 1576 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb) 1577 { 1578 struct list_head *head = &acb->ccb_free_list; 1579 struct CommandControlBlock *ccb = NULL; 1580 1581 if (!list_empty(head)) { 1582 ccb = list_entry(head->next, struct CommandControlBlock, list); 1583 list_del(head->next); 1584 } 1585 return ccb; 1586 } 1587 1588 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb, 1589 struct scsi_cmnd *cmd) 1590 { 1591 switch (cmd->cmnd[0]) { 1592 case INQUIRY: { 1593 unsigned char inqdata[36]; 1594 char *buffer; 1595 struct scatterlist *sg; 1596 1597 if (cmd->device->lun) { 1598 cmd->result = (DID_TIME_OUT << 16); 1599 cmd->scsi_done(cmd); 1600 return; 1601 } 1602 inqdata[0] = TYPE_PROCESSOR; 1603 /* Periph Qualifier & Periph Dev Type */ 1604 inqdata[1] = 0; 1605 /* rem media bit & Dev Type Modifier */ 1606 inqdata[2] = 0; 1607 /* ISO, ECMA, & ANSI versions */ 1608 inqdata[4] = 31; 1609 /* length of additional data */ 1610 strncpy(&inqdata[8], "Areca ", 8); 1611 /* Vendor Identification */ 1612 strncpy(&inqdata[16], "RAID controller ", 16); 1613 /* Product Identification */ 1614 strncpy(&inqdata[32], "R001", 4); /* Product Revision */ 1615 1616 sg = scsi_sglist(cmd); 1617 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; 1618 1619 memcpy(buffer, inqdata, sizeof(inqdata)); 1620 sg = scsi_sglist(cmd); 1621 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1622 1623 cmd->scsi_done(cmd); 1624 } 1625 break; 1626 case WRITE_BUFFER: 1627 case READ_BUFFER: { 1628 if (arcmsr_iop_message_xfer(acb, cmd)) 1629 cmd->result = (DID_ERROR << 16); 1630 cmd->scsi_done(cmd); 1631 } 1632 break; 1633 default: 1634 cmd->scsi_done(cmd); 1635 } 1636 } 1637 1638 static int arcmsr_queue_command(struct scsi_cmnd *cmd, 1639 void (* done)(struct scsi_cmnd *)) 1640 { 1641 struct Scsi_Host *host = cmd->device->host; 1642 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 1643 struct CommandControlBlock *ccb; 1644 int target = cmd->device->id; 1645 int lun = cmd->device->lun; 1646 1647 cmd->scsi_done = done; 1648 cmd->host_scribble = NULL; 1649 cmd->result = 0; 1650 if (acb->acb_flags & ACB_F_BUS_RESET) { 1651 printk(KERN_NOTICE "arcmsr%d: bus reset" 1652 " and return busy \n" 1653 , acb->host->host_no); 1654 return SCSI_MLQUEUE_HOST_BUSY; 1655 } 1656 if (target == 16) { 1657 /* virtual device for iop message transfer */ 1658 arcmsr_handle_virtual_command(acb, cmd); 1659 return 0; 1660 } 1661 if (acb->devstate[target][lun] == ARECA_RAID_GONE) { 1662 uint8_t block_cmd; 1663 1664 block_cmd = cmd->cmnd[0] & 0x0f; 1665 if (block_cmd == 0x08 || block_cmd == 0x0a) { 1666 printk(KERN_NOTICE 1667 "arcmsr%d: block 'read/write'" 1668 "command with gone raid volume" 1669 " Cmd = %2x, TargetId = %d, Lun = %d \n" 1670 , acb->host->host_no 1671 , cmd->cmnd[0] 1672 , target, lun); 1673 cmd->result = (DID_NO_CONNECT << 16); 1674 cmd->scsi_done(cmd); 1675 return 0; 1676 } 1677 } 1678 if (atomic_read(&acb->ccboutstandingcount) >= 1679 ARCMSR_MAX_OUTSTANDING_CMD) 1680 return SCSI_MLQUEUE_HOST_BUSY; 1681 1682 ccb = arcmsr_get_freeccb(acb); 1683 if (!ccb) 1684 return SCSI_MLQUEUE_HOST_BUSY; 1685 1686 arcmsr_build_ccb(acb, ccb, cmd); 1687 arcmsr_post_ccb(acb, ccb); 1688 return 0; 1689 } 1690 1691 static void arcmsr_get_hba_config(struct AdapterControlBlock *acb) 1692 { 1693 struct MessageUnit_A __iomem *reg = acb->pmuA; 1694 char *acb_firm_model = acb->firm_model; 1695 char *acb_firm_version = acb->firm_version; 1696 char __iomem *iop_firm_model = (char __iomem *)(®->message_rwbuffer[15]); 1697 char __iomem *iop_firm_version = (char __iomem *)(®->message_rwbuffer[17]); 1698 int count; 1699 1700 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, ®->inbound_msgaddr0); 1701 if (arcmsr_hba_wait_msgint_ready(acb)) { 1702 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ 1703 miscellaneous data' timeout \n", acb->host->host_no); 1704 } 1705 1706 count = 8; 1707 while (count) { 1708 *acb_firm_model = readb(iop_firm_model); 1709 acb_firm_model++; 1710 iop_firm_model++; 1711 count--; 1712 } 1713 1714 count = 16; 1715 while (count) { 1716 *acb_firm_version = readb(iop_firm_version); 1717 acb_firm_version++; 1718 iop_firm_version++; 1719 count--; 1720 } 1721 1722 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n" 1723 , acb->host->host_no 1724 , acb->firm_version); 1725 1726 acb->firm_request_len = readl(®->message_rwbuffer[1]); 1727 acb->firm_numbers_queue = readl(®->message_rwbuffer[2]); 1728 acb->firm_sdram_size = readl(®->message_rwbuffer[3]); 1729 acb->firm_hd_channels = readl(®->message_rwbuffer[4]); 1730 } 1731 1732 static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb) 1733 { 1734 struct MessageUnit_B *reg = acb->pmuB; 1735 uint32_t __iomem *lrwbuffer = reg->msgcode_rwbuffer_reg; 1736 char *acb_firm_model = acb->firm_model; 1737 char *acb_firm_version = acb->firm_version; 1738 char __iomem *iop_firm_model = (char __iomem *)(&lrwbuffer[15]); 1739 /*firm_model,15,60-67*/ 1740 char __iomem *iop_firm_version = (char __iomem *)(&lrwbuffer[17]); 1741 /*firm_version,17,68-83*/ 1742 int count; 1743 1744 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg); 1745 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1746 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ 1747 miscellaneous data' timeout \n", acb->host->host_no); 1748 } 1749 1750 count = 8; 1751 while (count) 1752 { 1753 *acb_firm_model = readb(iop_firm_model); 1754 acb_firm_model++; 1755 iop_firm_model++; 1756 count--; 1757 } 1758 1759 count = 16; 1760 while (count) 1761 { 1762 *acb_firm_version = readb(iop_firm_version); 1763 acb_firm_version++; 1764 iop_firm_version++; 1765 count--; 1766 } 1767 1768 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n", 1769 acb->host->host_no, 1770 acb->firm_version); 1771 1772 lrwbuffer++; 1773 acb->firm_request_len = readl(lrwbuffer++); 1774 /*firm_request_len,1,04-07*/ 1775 acb->firm_numbers_queue = readl(lrwbuffer++); 1776 /*firm_numbers_queue,2,08-11*/ 1777 acb->firm_sdram_size = readl(lrwbuffer++); 1778 /*firm_sdram_size,3,12-15*/ 1779 acb->firm_hd_channels = readl(lrwbuffer); 1780 /*firm_ide_channels,4,16-19*/ 1781 } 1782 1783 static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb) 1784 { 1785 switch (acb->adapter_type) { 1786 case ACB_ADAPTER_TYPE_A: { 1787 arcmsr_get_hba_config(acb); 1788 } 1789 break; 1790 1791 case ACB_ADAPTER_TYPE_B: { 1792 arcmsr_get_hbb_config(acb); 1793 } 1794 break; 1795 } 1796 } 1797 1798 static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb, 1799 struct CommandControlBlock *poll_ccb) 1800 { 1801 struct MessageUnit_A __iomem *reg = acb->pmuA; 1802 struct CommandControlBlock *ccb; 1803 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0; 1804 1805 polling_hba_ccb_retry: 1806 poll_count++; 1807 outbound_intstatus = readl(®->outbound_intstatus) & acb->outbound_int_enable; 1808 writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ 1809 while (1) { 1810 if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF) { 1811 if (poll_ccb_done) 1812 break; 1813 else { 1814 msleep(25); 1815 if (poll_count > 100) 1816 break; 1817 goto polling_hba_ccb_retry; 1818 } 1819 } 1820 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); 1821 poll_ccb_done = (ccb == poll_ccb) ? 1:0; 1822 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 1823 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) { 1824 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'" 1825 " poll command abort successfully \n" 1826 , acb->host->host_no 1827 , ccb->pcmd->device->id 1828 , ccb->pcmd->device->lun 1829 , ccb); 1830 ccb->pcmd->result = DID_ABORT << 16; 1831 arcmsr_ccb_complete(ccb, 1); 1832 poll_ccb_done = 1; 1833 continue; 1834 } 1835 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" 1836 " command done ccb = '0x%p'" 1837 "ccboutstandingcount = %d \n" 1838 , acb->host->host_no 1839 , ccb 1840 , atomic_read(&acb->ccboutstandingcount)); 1841 continue; 1842 } 1843 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 1844 } 1845 } 1846 1847 static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \ 1848 struct CommandControlBlock *poll_ccb) 1849 { 1850 struct MessageUnit_B *reg = acb->pmuB; 1851 struct CommandControlBlock *ccb; 1852 uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0; 1853 int index; 1854 1855 polling_hbb_ccb_retry: 1856 poll_count++; 1857 /* clear doorbell interrupt */ 1858 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); 1859 while (1) { 1860 index = reg->doneq_index; 1861 if ((flag_ccb = readl(®->done_qbuffer[index])) == 0) { 1862 if (poll_ccb_done) 1863 break; 1864 else { 1865 msleep(25); 1866 if (poll_count > 100) 1867 break; 1868 goto polling_hbb_ccb_retry; 1869 } 1870 } 1871 writel(0, ®->done_qbuffer[index]); 1872 index++; 1873 /*if last index number set it to 0 */ 1874 index %= ARCMSR_MAX_HBB_POSTQUEUE; 1875 reg->doneq_index = index; 1876 /* check ifcommand done with no error*/ 1877 ccb = (struct CommandControlBlock *)\ 1878 (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/ 1879 poll_ccb_done = (ccb == poll_ccb) ? 1:0; 1880 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 1881 if (ccb->startdone == ARCMSR_CCB_ABORTED) { 1882 printk(KERN_NOTICE "arcmsr%d: \ 1883 scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n" 1884 ,acb->host->host_no 1885 ,ccb->pcmd->device->id 1886 ,ccb->pcmd->device->lun 1887 ,ccb); 1888 ccb->pcmd->result = DID_ABORT << 16; 1889 arcmsr_ccb_complete(ccb, 1); 1890 continue; 1891 } 1892 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" 1893 " command done ccb = '0x%p'" 1894 "ccboutstandingcount = %d \n" 1895 , acb->host->host_no 1896 , ccb 1897 , atomic_read(&acb->ccboutstandingcount)); 1898 continue; 1899 } 1900 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 1901 } /*drain reply FIFO*/ 1902 } 1903 1904 static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, \ 1905 struct CommandControlBlock *poll_ccb) 1906 { 1907 switch (acb->adapter_type) { 1908 1909 case ACB_ADAPTER_TYPE_A: { 1910 arcmsr_polling_hba_ccbdone(acb,poll_ccb); 1911 } 1912 break; 1913 1914 case ACB_ADAPTER_TYPE_B: { 1915 arcmsr_polling_hbb_ccbdone(acb,poll_ccb); 1916 } 1917 } 1918 } 1919 1920 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb) 1921 { 1922 uint32_t cdb_phyaddr, ccb_phyaddr_hi32; 1923 dma_addr_t dma_coherent_handle; 1924 /* 1925 ******************************************************************** 1926 ** here we need to tell iop 331 our freeccb.HighPart 1927 ** if freeccb.HighPart is not zero 1928 ******************************************************************** 1929 */ 1930 dma_coherent_handle = acb->dma_coherent_handle; 1931 cdb_phyaddr = (uint32_t)(dma_coherent_handle); 1932 ccb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16); 1933 /* 1934 *********************************************************************** 1935 ** if adapter type B, set window of "post command Q" 1936 *********************************************************************** 1937 */ 1938 switch (acb->adapter_type) { 1939 1940 case ACB_ADAPTER_TYPE_A: { 1941 if (ccb_phyaddr_hi32 != 0) { 1942 struct MessageUnit_A __iomem *reg = acb->pmuA; 1943 uint32_t intmask_org; 1944 intmask_org = arcmsr_disable_outbound_ints(acb); 1945 writel(ARCMSR_SIGNATURE_SET_CONFIG, \ 1946 ®->message_rwbuffer[0]); 1947 writel(ccb_phyaddr_hi32, ®->message_rwbuffer[1]); 1948 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \ 1949 ®->inbound_msgaddr0); 1950 if (arcmsr_hba_wait_msgint_ready(acb)) { 1951 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \ 1952 part physical address timeout\n", 1953 acb->host->host_no); 1954 return 1; 1955 } 1956 arcmsr_enable_outbound_ints(acb, intmask_org); 1957 } 1958 } 1959 break; 1960 1961 case ACB_ADAPTER_TYPE_B: { 1962 unsigned long post_queue_phyaddr; 1963 uint32_t __iomem *rwbuffer; 1964 1965 struct MessageUnit_B *reg = acb->pmuB; 1966 uint32_t intmask_org; 1967 intmask_org = arcmsr_disable_outbound_ints(acb); 1968 reg->postq_index = 0; 1969 reg->doneq_index = 0; 1970 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell_reg); 1971 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1972 printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \ 1973 acb->host->host_no); 1974 return 1; 1975 } 1976 post_queue_phyaddr = cdb_phyaddr + ARCMSR_MAX_FREECCB_NUM * \ 1977 sizeof(struct CommandControlBlock) + offsetof(struct MessageUnit_B, post_qbuffer) ; 1978 rwbuffer = reg->msgcode_rwbuffer_reg; 1979 /* driver "set config" signature */ 1980 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++); 1981 /* normal should be zero */ 1982 writel(ccb_phyaddr_hi32, rwbuffer++); 1983 /* postQ size (256 + 8)*4 */ 1984 writel(post_queue_phyaddr, rwbuffer++); 1985 /* doneQ size (256 + 8)*4 */ 1986 writel(post_queue_phyaddr + 1056, rwbuffer++); 1987 /* ccb maxQ size must be --> [(256 + 8)*4]*/ 1988 writel(1056, rwbuffer); 1989 1990 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell_reg); 1991 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1992 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \ 1993 timeout \n",acb->host->host_no); 1994 return 1; 1995 } 1996 1997 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell_reg); 1998 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1999 printk(KERN_NOTICE "arcmsr%d: 'can not set diver mode \n"\ 2000 ,acb->host->host_no); 2001 return 1; 2002 } 2003 arcmsr_enable_outbound_ints(acb, intmask_org); 2004 } 2005 break; 2006 } 2007 return 0; 2008 } 2009 2010 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb) 2011 { 2012 uint32_t firmware_state = 0; 2013 2014 switch (acb->adapter_type) { 2015 2016 case ACB_ADAPTER_TYPE_A: { 2017 struct MessageUnit_A __iomem *reg = acb->pmuA; 2018 do { 2019 firmware_state = readl(®->outbound_msgaddr1); 2020 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0); 2021 } 2022 break; 2023 2024 case ACB_ADAPTER_TYPE_B: { 2025 struct MessageUnit_B *reg = acb->pmuB; 2026 do { 2027 firmware_state = readl(reg->iop2drv_doorbell_reg); 2028 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0); 2029 } 2030 break; 2031 } 2032 } 2033 2034 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb) 2035 { 2036 struct MessageUnit_A __iomem *reg = acb->pmuA; 2037 acb->acb_flags |= ACB_F_MSG_START_BGRB; 2038 writel(ARCMSR_INBOUND_MESG0_START_BGRB, ®->inbound_msgaddr0); 2039 if (arcmsr_hba_wait_msgint_ready(acb)) { 2040 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ 2041 rebulid' timeout \n", acb->host->host_no); 2042 } 2043 } 2044 2045 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb) 2046 { 2047 struct MessageUnit_B *reg = acb->pmuB; 2048 acb->acb_flags |= ACB_F_MSG_START_BGRB; 2049 writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell_reg); 2050 if (arcmsr_hbb_wait_msgint_ready(acb)) { 2051 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ 2052 rebulid' timeout \n",acb->host->host_no); 2053 } 2054 } 2055 2056 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb) 2057 { 2058 switch (acb->adapter_type) { 2059 case ACB_ADAPTER_TYPE_A: 2060 arcmsr_start_hba_bgrb(acb); 2061 break; 2062 case ACB_ADAPTER_TYPE_B: 2063 arcmsr_start_hbb_bgrb(acb); 2064 break; 2065 } 2066 } 2067 2068 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb) 2069 { 2070 switch (acb->adapter_type) { 2071 case ACB_ADAPTER_TYPE_A: { 2072 struct MessageUnit_A __iomem *reg = acb->pmuA; 2073 uint32_t outbound_doorbell; 2074 /* empty doorbell Qbuffer if door bell ringed */ 2075 outbound_doorbell = readl(®->outbound_doorbell); 2076 /*clear doorbell interrupt */ 2077 writel(outbound_doorbell, ®->outbound_doorbell); 2078 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); 2079 } 2080 break; 2081 2082 case ACB_ADAPTER_TYPE_B: { 2083 struct MessageUnit_B *reg = acb->pmuB; 2084 /*clear interrupt and message state*/ 2085 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); 2086 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); 2087 /* let IOP know data has been read */ 2088 } 2089 break; 2090 } 2091 } 2092 2093 static void arcmsr_iop_init(struct AdapterControlBlock *acb) 2094 { 2095 uint32_t intmask_org; 2096 2097 arcmsr_wait_firmware_ready(acb); 2098 arcmsr_iop_confirm(acb); 2099 /* disable all outbound interrupt */ 2100 intmask_org = arcmsr_disable_outbound_ints(acb); 2101 arcmsr_get_firmware_spec(acb); 2102 /*start background rebuild*/ 2103 arcmsr_start_adapter_bgrb(acb); 2104 /* empty doorbell Qbuffer if door bell ringed */ 2105 arcmsr_clear_doorbell_queue_buffer(acb); 2106 /* enable outbound Post Queue,outbound doorbell Interrupt */ 2107 arcmsr_enable_outbound_ints(acb, intmask_org); 2108 acb->acb_flags |= ACB_F_IOP_INITED; 2109 } 2110 2111 static void arcmsr_iop_reset(struct AdapterControlBlock *acb) 2112 { 2113 struct CommandControlBlock *ccb; 2114 uint32_t intmask_org; 2115 int i = 0; 2116 2117 if (atomic_read(&acb->ccboutstandingcount) != 0) { 2118 /* talk to iop 331 outstanding command aborted */ 2119 arcmsr_abort_allcmd(acb); 2120 2121 /* wait for 3 sec for all command aborted*/ 2122 ssleep(3); 2123 2124 /* disable all outbound interrupt */ 2125 intmask_org = arcmsr_disable_outbound_ints(acb); 2126 /* clear all outbound posted Q */ 2127 arcmsr_done4abort_postqueue(acb); 2128 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2129 ccb = acb->pccb_pool[i]; 2130 if (ccb->startdone == ARCMSR_CCB_START) { 2131 ccb->startdone = ARCMSR_CCB_ABORTED; 2132 arcmsr_ccb_complete(ccb, 1); 2133 } 2134 } 2135 /* enable all outbound interrupt */ 2136 arcmsr_enable_outbound_ints(acb, intmask_org); 2137 } 2138 } 2139 2140 static int arcmsr_bus_reset(struct scsi_cmnd *cmd) 2141 { 2142 struct AdapterControlBlock *acb = 2143 (struct AdapterControlBlock *)cmd->device->host->hostdata; 2144 int i; 2145 2146 acb->num_resets++; 2147 acb->acb_flags |= ACB_F_BUS_RESET; 2148 for (i = 0; i < 400; i++) { 2149 if (!atomic_read(&acb->ccboutstandingcount)) 2150 break; 2151 arcmsr_interrupt(acb);/* FIXME: need spinlock */ 2152 msleep(25); 2153 } 2154 arcmsr_iop_reset(acb); 2155 acb->acb_flags &= ~ACB_F_BUS_RESET; 2156 return SUCCESS; 2157 } 2158 2159 static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb, 2160 struct CommandControlBlock *ccb) 2161 { 2162 u32 intmask; 2163 2164 ccb->startdone = ARCMSR_CCB_ABORTED; 2165 2166 /* 2167 ** Wait for 3 sec for all command done. 2168 */ 2169 ssleep(3); 2170 2171 intmask = arcmsr_disable_outbound_ints(acb); 2172 arcmsr_polling_ccbdone(acb, ccb); 2173 arcmsr_enable_outbound_ints(acb, intmask); 2174 } 2175 2176 static int arcmsr_abort(struct scsi_cmnd *cmd) 2177 { 2178 struct AdapterControlBlock *acb = 2179 (struct AdapterControlBlock *)cmd->device->host->hostdata; 2180 int i = 0; 2181 2182 printk(KERN_NOTICE 2183 "arcmsr%d: abort device command of scsi id = %d lun = %d \n", 2184 acb->host->host_no, cmd->device->id, cmd->device->lun); 2185 acb->num_aborts++; 2186 /* 2187 ************************************************ 2188 ** the all interrupt service routine is locked 2189 ** we need to handle it as soon as possible and exit 2190 ************************************************ 2191 */ 2192 if (!atomic_read(&acb->ccboutstandingcount)) 2193 return SUCCESS; 2194 2195 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2196 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 2197 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) { 2198 arcmsr_abort_one_cmd(acb, ccb); 2199 break; 2200 } 2201 } 2202 2203 return SUCCESS; 2204 } 2205 2206 static const char *arcmsr_info(struct Scsi_Host *host) 2207 { 2208 struct AdapterControlBlock *acb = 2209 (struct AdapterControlBlock *) host->hostdata; 2210 static char buf[256]; 2211 char *type; 2212 int raid6 = 1; 2213 2214 switch (acb->pdev->device) { 2215 case PCI_DEVICE_ID_ARECA_1110: 2216 case PCI_DEVICE_ID_ARECA_1200: 2217 case PCI_DEVICE_ID_ARECA_1202: 2218 case PCI_DEVICE_ID_ARECA_1210: 2219 raid6 = 0; 2220 /*FALLTHRU*/ 2221 case PCI_DEVICE_ID_ARECA_1120: 2222 case PCI_DEVICE_ID_ARECA_1130: 2223 case PCI_DEVICE_ID_ARECA_1160: 2224 case PCI_DEVICE_ID_ARECA_1170: 2225 case PCI_DEVICE_ID_ARECA_1201: 2226 case PCI_DEVICE_ID_ARECA_1220: 2227 case PCI_DEVICE_ID_ARECA_1230: 2228 case PCI_DEVICE_ID_ARECA_1260: 2229 case PCI_DEVICE_ID_ARECA_1270: 2230 case PCI_DEVICE_ID_ARECA_1280: 2231 type = "SATA"; 2232 break; 2233 case PCI_DEVICE_ID_ARECA_1380: 2234 case PCI_DEVICE_ID_ARECA_1381: 2235 case PCI_DEVICE_ID_ARECA_1680: 2236 case PCI_DEVICE_ID_ARECA_1681: 2237 type = "SAS"; 2238 break; 2239 default: 2240 type = "X-TYPE"; 2241 break; 2242 } 2243 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s", 2244 type, raid6 ? "( RAID6 capable)" : "", 2245 ARCMSR_DRIVER_VERSION); 2246 return buf; 2247 } 2248 #ifdef CONFIG_SCSI_ARCMSR_AER 2249 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev) 2250 { 2251 struct Scsi_Host *host = pci_get_drvdata(pdev); 2252 struct AdapterControlBlock *acb = 2253 (struct AdapterControlBlock *) host->hostdata; 2254 uint32_t intmask_org; 2255 int i, j; 2256 2257 if (pci_enable_device(pdev)) { 2258 return PCI_ERS_RESULT_DISCONNECT; 2259 } 2260 pci_set_master(pdev); 2261 intmask_org = arcmsr_disable_outbound_ints(acb); 2262 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 2263 ACB_F_MESSAGE_RQBUFFER_CLEARED | 2264 ACB_F_MESSAGE_WQBUFFER_READED); 2265 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 2266 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 2267 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 2268 acb->devstate[i][j] = ARECA_RAID_GONE; 2269 2270 arcmsr_wait_firmware_ready(acb); 2271 arcmsr_iop_confirm(acb); 2272 /* disable all outbound interrupt */ 2273 arcmsr_get_firmware_spec(acb); 2274 /*start background rebuild*/ 2275 arcmsr_start_adapter_bgrb(acb); 2276 /* empty doorbell Qbuffer if door bell ringed */ 2277 arcmsr_clear_doorbell_queue_buffer(acb); 2278 /* enable outbound Post Queue,outbound doorbell Interrupt */ 2279 arcmsr_enable_outbound_ints(acb, intmask_org); 2280 acb->acb_flags |= ACB_F_IOP_INITED; 2281 2282 pci_enable_pcie_error_reporting(pdev); 2283 return PCI_ERS_RESULT_RECOVERED; 2284 } 2285 2286 static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev) 2287 { 2288 struct Scsi_Host *host = pci_get_drvdata(pdev); 2289 struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata; 2290 struct CommandControlBlock *ccb; 2291 uint32_t intmask_org; 2292 int i = 0; 2293 2294 if (atomic_read(&acb->ccboutstandingcount) != 0) { 2295 /* talk to iop 331 outstanding command aborted */ 2296 arcmsr_abort_allcmd(acb); 2297 /* wait for 3 sec for all command aborted*/ 2298 ssleep(3); 2299 /* disable all outbound interrupt */ 2300 intmask_org = arcmsr_disable_outbound_ints(acb); 2301 /* clear all outbound posted Q */ 2302 arcmsr_done4abort_postqueue(acb); 2303 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2304 ccb = acb->pccb_pool[i]; 2305 if (ccb->startdone == ARCMSR_CCB_START) { 2306 ccb->startdone = ARCMSR_CCB_ABORTED; 2307 arcmsr_ccb_complete(ccb, 1); 2308 } 2309 } 2310 /* enable all outbound interrupt */ 2311 arcmsr_enable_outbound_ints(acb, intmask_org); 2312 } 2313 pci_disable_device(pdev); 2314 } 2315 2316 static void arcmsr_pci_ers_disconnect_forepart(struct pci_dev *pdev) 2317 { 2318 struct Scsi_Host *host = pci_get_drvdata(pdev); 2319 struct AdapterControlBlock *acb = \ 2320 (struct AdapterControlBlock *)host->hostdata; 2321 2322 arcmsr_stop_adapter_bgrb(acb); 2323 arcmsr_flush_adapter_cache(acb); 2324 } 2325 2326 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 2327 pci_channel_state_t state) 2328 { 2329 switch (state) { 2330 case pci_channel_io_frozen: 2331 arcmsr_pci_ers_need_reset_forepart(pdev); 2332 return PCI_ERS_RESULT_NEED_RESET; 2333 case pci_channel_io_perm_failure: 2334 arcmsr_pci_ers_disconnect_forepart(pdev); 2335 return PCI_ERS_RESULT_DISCONNECT; 2336 break; 2337 default: 2338 return PCI_ERS_RESULT_NEED_RESET; 2339 } 2340 } 2341 #endif 2342