arcmsr_hba.c revision 9cb83c7529d929c00f37d821daed1942a1b20602
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 74MODULE_AUTHOR("Erich Chen <support@areca.com.tw>"); 75MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID HOST Adapter"); 76MODULE_LICENSE("Dual BSD/GPL"); 77MODULE_VERSION(ARCMSR_DRIVER_VERSION); 78 79static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, 80 struct scsi_cmnd *cmd); 81static int arcmsr_iop_confirm(struct AdapterControlBlock *acb); 82static int arcmsr_abort(struct scsi_cmnd *); 83static int arcmsr_bus_reset(struct scsi_cmnd *); 84static int arcmsr_bios_param(struct scsi_device *sdev, 85 struct block_device *bdev, sector_t capacity, int *info); 86static int arcmsr_queue_command(struct scsi_cmnd *cmd, 87 void (*done) (struct scsi_cmnd *)); 88static int arcmsr_probe(struct pci_dev *pdev, 89 const struct pci_device_id *id); 90static void arcmsr_remove(struct pci_dev *pdev); 91static void arcmsr_shutdown(struct pci_dev *pdev); 92static void arcmsr_iop_init(struct AdapterControlBlock *acb); 93static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb); 94static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb); 95static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb); 96static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb); 97static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb); 98static const char *arcmsr_info(struct Scsi_Host *); 99static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb); 100static 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 109static 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 .use_sg_chaining = ENABLE_SG_CHAINING, 126 .shost_attrs = arcmsr_host_attrs, 127}; 128#ifdef CONFIG_SCSI_ARCMSR_AER 129static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev); 130static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 131 pci_channel_state_t state); 132 133static struct pci_error_handlers arcmsr_pci_error_handlers = { 134 .error_detected = arcmsr_pci_error_detected, 135 .slot_reset = arcmsr_pci_slot_reset, 136}; 137#endif 138static struct pci_device_id arcmsr_device_id_table[] = { 139 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)}, 140 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)}, 141 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)}, 142 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)}, 143 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)}, 144 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)}, 145 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)}, 146 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)}, 147 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)}, 148 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)}, 149 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)}, 150 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)}, 151 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)}, 152 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)}, 153 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)}, 154 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)}, 155 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)}, 156 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)}, 157 {0, 0}, /* Terminating entry */ 158}; 159MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table); 160static struct pci_driver arcmsr_pci_driver = { 161 .name = "arcmsr", 162 .id_table = arcmsr_device_id_table, 163 .probe = arcmsr_probe, 164 .remove = arcmsr_remove, 165 .shutdown = arcmsr_shutdown, 166 #ifdef CONFIG_SCSI_ARCMSR_AER 167 .err_handler = &arcmsr_pci_error_handlers, 168 #endif 169}; 170 171static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id) 172{ 173 irqreturn_t handle_state; 174 struct AdapterControlBlock *acb = dev_id; 175 176 spin_lock(acb->host->host_lock); 177 handle_state = arcmsr_interrupt(acb); 178 spin_unlock(acb->host->host_lock); 179 180 return handle_state; 181} 182 183static int arcmsr_bios_param(struct scsi_device *sdev, 184 struct block_device *bdev, sector_t capacity, int *geom) 185{ 186 int ret, heads, sectors, cylinders, total_capacity; 187 unsigned char *buffer;/* return copy of block device's partition table */ 188 189 buffer = scsi_bios_ptable(bdev); 190 if (buffer) { 191 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]); 192 kfree(buffer); 193 if (ret != -1) 194 return ret; 195 } 196 total_capacity = capacity; 197 heads = 64; 198 sectors = 32; 199 cylinders = total_capacity / (heads * sectors); 200 if (cylinders > 1024) { 201 heads = 255; 202 sectors = 63; 203 cylinders = total_capacity / (heads * sectors); 204 } 205 geom[0] = heads; 206 geom[1] = sectors; 207 geom[2] = cylinders; 208 return 0; 209} 210 211static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb) 212{ 213 struct pci_dev *pdev = acb->pdev; 214 u16 dev_id; 215 pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id); 216 switch (dev_id) { 217 case 0x1201 : { 218 acb->adapter_type = ACB_ADAPTER_TYPE_B; 219 } 220 break; 221 222 default : acb->adapter_type = ACB_ADAPTER_TYPE_A; 223 } 224} 225 226static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb) 227{ 228 229 switch (acb->adapter_type) { 230 231 case ACB_ADAPTER_TYPE_A: { 232 struct pci_dev *pdev = acb->pdev; 233 void *dma_coherent; 234 dma_addr_t dma_coherent_handle, dma_addr; 235 struct CommandControlBlock *ccb_tmp; 236 uint32_t intmask_org; 237 int i, j; 238 239 acb->pmu = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); 240 if (!acb->pmu) { 241 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", 242 acb->host->host_no); 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 if (!dma_coherent) 250 return -ENOMEM; 251 252 acb->dma_coherent = dma_coherent; 253 acb->dma_coherent_handle = dma_coherent_handle; 254 255 if (((unsigned long)dma_coherent & 0x1F)) { 256 dma_coherent = dma_coherent + 257 (0x20 - ((unsigned long)dma_coherent & 0x1F)); 258 dma_coherent_handle = dma_coherent_handle + 259 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); 260 } 261 262 dma_addr = dma_coherent_handle; 263 ccb_tmp = (struct CommandControlBlock *)dma_coherent; 264 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 265 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; 266 ccb_tmp->acb = acb; 267 acb->pccb_pool[i] = ccb_tmp; 268 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); 269 dma_addr = dma_addr + sizeof(struct CommandControlBlock); 270 ccb_tmp++; 271 } 272 273 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; 274 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 275 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 276 acb->devstate[i][j] = ARECA_RAID_GONE; 277 278 /* 279 ** here we need to tell iop 331 our ccb_tmp.HighPart 280 ** if ccb_tmp.HighPart is not zero 281 */ 282 intmask_org = arcmsr_disable_outbound_ints(acb); 283 } 284 break; 285 286 case ACB_ADAPTER_TYPE_B: { 287 288 struct pci_dev *pdev = acb->pdev; 289 struct MessageUnit_B *reg; 290 void *mem_base0, *mem_base1; 291 void *dma_coherent; 292 dma_addr_t dma_coherent_handle, dma_addr; 293 uint32_t intmask_org; 294 struct CommandControlBlock *ccb_tmp; 295 int i, j; 296 297 dma_coherent = dma_alloc_coherent(&pdev->dev, 298 ((ARCMSR_MAX_FREECCB_NUM * 299 sizeof(struct CommandControlBlock) + 0x20) + 300 sizeof(struct MessageUnit_B)), 301 &dma_coherent_handle, GFP_KERNEL); 302 if (!dma_coherent) 303 return -ENOMEM; 304 305 acb->dma_coherent = dma_coherent; 306 acb->dma_coherent_handle = dma_coherent_handle; 307 308 if (((unsigned long)dma_coherent & 0x1F)) { 309 dma_coherent = dma_coherent + 310 (0x20 - ((unsigned long)dma_coherent & 0x1F)); 311 dma_coherent_handle = dma_coherent_handle + 312 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); 313 } 314 315 reg = (struct MessageUnit_B *)(dma_coherent + 316 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock)); 317 318 dma_addr = dma_coherent_handle; 319 ccb_tmp = (struct CommandControlBlock *)dma_coherent; 320 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 321 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; 322 ccb_tmp->acb = acb; 323 acb->pccb_pool[i] = ccb_tmp; 324 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); 325 dma_addr = dma_addr + sizeof(struct CommandControlBlock); 326 ccb_tmp++; 327 } 328 329 reg = (struct MessageUnit_B *)(dma_coherent + 330 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock)); 331 acb->pmu = (struct MessageUnit *)reg; 332 mem_base0 = ioremap(pci_resource_start(pdev, 0), 333 pci_resource_len(pdev, 0)); 334 mem_base1 = ioremap(pci_resource_start(pdev, 2), 335 pci_resource_len(pdev, 2)); 336 reg->drv2iop_doorbell_reg = (uint32_t *)((char *)mem_base0 + 337 ARCMSR_DRV2IOP_DOORBELL); 338 reg->drv2iop_doorbell_mask_reg = (uint32_t *)((char *)mem_base0 + 339 ARCMSR_DRV2IOP_DOORBELL_MASK); 340 reg->iop2drv_doorbell_reg = (uint32_t *)((char *)mem_base0 + 341 ARCMSR_IOP2DRV_DOORBELL); 342 reg->iop2drv_doorbell_mask_reg = (uint32_t *)((char *)mem_base0 + 343 ARCMSR_IOP2DRV_DOORBELL_MASK); 344 reg->ioctl_wbuffer_reg = (uint32_t *)((char *)mem_base1 + 345 ARCMSR_IOCTL_WBUFFER); 346 reg->ioctl_rbuffer_reg = (uint32_t *)((char *)mem_base1 + 347 ARCMSR_IOCTL_RBUFFER); 348 reg->msgcode_rwbuffer_reg = (uint32_t *)((char *)mem_base1 + 349 ARCMSR_MSGCODE_RWBUFFER); 350 351 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; 352 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 353 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 354 acb->devstate[i][j] = ARECA_RAID_GOOD; 355 356 /* 357 ** here we need to tell iop 331 our ccb_tmp.HighPart 358 ** if ccb_tmp.HighPart is not zero 359 */ 360 intmask_org = arcmsr_disable_outbound_ints(acb); 361 } 362 break; 363 } 364 return 0; 365} 366 367static int arcmsr_probe(struct pci_dev *pdev, 368 const struct pci_device_id *id) 369{ 370 struct Scsi_Host *host; 371 struct AdapterControlBlock *acb; 372 uint8_t bus, dev_fun; 373 int error; 374 375 error = pci_enable_device(pdev); 376 if (error) 377 goto out; 378 pci_set_master(pdev); 379 380 host = scsi_host_alloc(&arcmsr_scsi_host_template, 381 sizeof(struct AdapterControlBlock)); 382 if (!host) { 383 error = -ENOMEM; 384 goto out_disable_device; 385 } 386 acb = (struct AdapterControlBlock *)host->hostdata; 387 memset(acb, 0, sizeof (struct AdapterControlBlock)); 388 389 error = pci_set_dma_mask(pdev, DMA_64BIT_MASK); 390 if (error) { 391 error = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 392 if (error) { 393 printk(KERN_WARNING 394 "scsi%d: No suitable DMA mask available\n", 395 host->host_no); 396 goto out_host_put; 397 } 398 } 399 bus = pdev->bus->number; 400 dev_fun = pdev->devfn; 401 acb->host = host; 402 acb->pdev = pdev; 403 host->max_sectors = ARCMSR_MAX_XFER_SECTORS; 404 host->max_lun = ARCMSR_MAX_TARGETLUN; 405 host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/ 406 host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/ 407 host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES; 408 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */ 409 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN; 410 host->this_id = ARCMSR_SCSI_INITIATOR_ID; 411 host->unique_id = (bus << 8) | dev_fun; 412 host->irq = pdev->irq; 413 error = pci_request_regions(pdev, "arcmsr"); 414 if (error) { 415 goto out_host_put; 416 } 417 arcmsr_define_adapter_type(acb); 418 419 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 420 ACB_F_MESSAGE_RQBUFFER_CLEARED | 421 ACB_F_MESSAGE_WQBUFFER_READED); 422 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 423 INIT_LIST_HEAD(&acb->ccb_free_list); 424 425 error = arcmsr_alloc_ccb_pool(acb); 426 if (error) 427 goto out_release_regions; 428 429 error = request_irq(pdev->irq, arcmsr_do_interrupt, 430 IRQF_SHARED, "arcmsr", acb); 431 if (error) 432 goto out_free_ccb_pool; 433 434 arcmsr_iop_init(acb); 435 pci_set_drvdata(pdev, host); 436 if (strncmp(acb->firm_version, "V1.42", 5) >= 0) 437 host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B; 438 439 error = scsi_add_host(host, &pdev->dev); 440 if (error) 441 goto out_free_irq; 442 443 error = arcmsr_alloc_sysfs_attr(acb); 444 if (error) 445 goto out_free_sysfs; 446 447 scsi_scan_host(host); 448 #ifdef CONFIG_SCSI_ARCMSR_AER 449 pci_enable_pcie_error_reporting(pdev); 450 #endif 451 return 0; 452 out_free_sysfs: 453 out_free_irq: 454 free_irq(pdev->irq, acb); 455 out_free_ccb_pool: 456 arcmsr_free_ccb_pool(acb); 457 iounmap(acb->pmu); 458 out_release_regions: 459 pci_release_regions(pdev); 460 out_host_put: 461 scsi_host_put(host); 462 out_disable_device: 463 pci_disable_device(pdev); 464 out: 465 return error; 466} 467 468static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb) 469{ 470 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 471 uint32_t Index; 472 uint8_t Retries = 0x00; 473 474 do { 475 for (Index = 0; Index < 100; Index++) { 476 if (readl(®->outbound_intstatus) & 477 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) { 478 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, 479 ®->outbound_intstatus); 480 return 0x00; 481 } 482 msleep(10); 483 }/*max 1 seconds*/ 484 485 } while (Retries++ < 20);/*max 20 sec*/ 486 return 0xff; 487} 488 489static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb) 490{ 491 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 492 uint32_t Index; 493 uint8_t Retries = 0x00; 494 495 do { 496 for (Index = 0; Index < 100; Index++) { 497 if (readl(reg->iop2drv_doorbell_reg) 498 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) { 499 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN 500 , reg->iop2drv_doorbell_reg); 501 return 0x00; 502 } 503 msleep(10); 504 }/*max 1 seconds*/ 505 506 } while (Retries++ < 20);/*max 20 sec*/ 507 return 0xff; 508} 509 510static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb) 511{ 512 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 513 514 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0); 515 if (arcmsr_hba_wait_msgint_ready(acb)) 516 printk(KERN_NOTICE 517 "arcmsr%d: wait 'abort all outstanding command' timeout \n" 518 , acb->host->host_no); 519} 520 521static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb) 522{ 523 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 524 525 writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg); 526 if (arcmsr_hbb_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 532static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb) 533{ 534 switch (acb->adapter_type) { 535 case ACB_ADAPTER_TYPE_A: { 536 arcmsr_abort_hba_allcmd(acb); 537 } 538 break; 539 540 case ACB_ADAPTER_TYPE_B: { 541 arcmsr_abort_hbb_allcmd(acb); 542 } 543 } 544} 545 546static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb) 547{ 548 struct scsi_cmnd *pcmd = ccb->pcmd; 549 550 scsi_dma_unmap(pcmd); 551} 552 553static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag) 554{ 555 struct AdapterControlBlock *acb = ccb->acb; 556 struct scsi_cmnd *pcmd = ccb->pcmd; 557 558 arcmsr_pci_unmap_dma(ccb); 559 if (stand_flag == 1) 560 atomic_dec(&acb->ccboutstandingcount); 561 ccb->startdone = ARCMSR_CCB_DONE; 562 ccb->ccb_flags = 0; 563 list_add_tail(&ccb->list, &acb->ccb_free_list); 564 pcmd->scsi_done(pcmd); 565} 566 567static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb) 568{ 569 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 570 int retry_count = 30; 571 572 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0); 573 do { 574 if (!arcmsr_hba_wait_msgint_ready(acb)) 575 break; 576 else { 577 retry_count--; 578 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ 579 timeout, retry count down = %d \n", acb->host->host_no, retry_count); 580 } 581 } while (retry_count != 0); 582} 583 584static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb) 585{ 586 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 587 int retry_count = 30; 588 589 writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg); 590 do { 591 if (!arcmsr_hbb_wait_msgint_ready(acb)) 592 break; 593 else { 594 retry_count--; 595 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ 596 timeout,retry count down = %d \n", acb->host->host_no, retry_count); 597 } 598 } while (retry_count != 0); 599} 600 601static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb) 602{ 603 switch (acb->adapter_type) { 604 605 case ACB_ADAPTER_TYPE_A: { 606 arcmsr_flush_hba_cache(acb); 607 } 608 break; 609 610 case ACB_ADAPTER_TYPE_B: { 611 arcmsr_flush_hbb_cache(acb); 612 } 613 } 614} 615 616static void arcmsr_report_sense_info(struct CommandControlBlock *ccb) 617{ 618 619 struct scsi_cmnd *pcmd = ccb->pcmd; 620 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer; 621 622 pcmd->result = DID_OK << 16; 623 if (sensebuffer) { 624 int sense_data_length = 625 sizeof(struct SENSE_DATA) < sizeof(pcmd->sense_buffer) 626 ? sizeof(struct SENSE_DATA) : sizeof(pcmd->sense_buffer); 627 memset(sensebuffer, 0, sizeof(pcmd->sense_buffer)); 628 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length); 629 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS; 630 sensebuffer->Valid = 1; 631 } 632} 633 634static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb) 635{ 636 u32 orig_mask = 0; 637 switch (acb->adapter_type) { 638 639 case ACB_ADAPTER_TYPE_A : { 640 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 641 orig_mask = readl(®->outbound_intmask)|\ 642 ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE; 643 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \ 644 ®->outbound_intmask); 645 } 646 break; 647 648 case ACB_ADAPTER_TYPE_B : { 649 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 650 orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \ 651 (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE); 652 writel(0, reg->iop2drv_doorbell_mask_reg); 653 } 654 break; 655 } 656 return orig_mask; 657} 658 659static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \ 660 struct CommandControlBlock *ccb, uint32_t flag_ccb) 661{ 662 663 uint8_t id, lun; 664 id = ccb->pcmd->device->id; 665 lun = ccb->pcmd->device->lun; 666 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) { 667 if (acb->devstate[id][lun] == ARECA_RAID_GONE) 668 acb->devstate[id][lun] = ARECA_RAID_GOOD; 669 ccb->pcmd->result = DID_OK << 16; 670 arcmsr_ccb_complete(ccb, 1); 671 } else { 672 switch (ccb->arcmsr_cdb.DeviceStatus) { 673 case ARCMSR_DEV_SELECT_TIMEOUT: { 674 acb->devstate[id][lun] = ARECA_RAID_GONE; 675 ccb->pcmd->result = DID_NO_CONNECT << 16; 676 arcmsr_ccb_complete(ccb, 1); 677 } 678 break; 679 680 case ARCMSR_DEV_ABORTED: 681 682 case ARCMSR_DEV_INIT_FAIL: { 683 acb->devstate[id][lun] = ARECA_RAID_GONE; 684 ccb->pcmd->result = DID_BAD_TARGET << 16; 685 arcmsr_ccb_complete(ccb, 1); 686 } 687 break; 688 689 case ARCMSR_DEV_CHECK_CONDITION: { 690 acb->devstate[id][lun] = ARECA_RAID_GOOD; 691 arcmsr_report_sense_info(ccb); 692 arcmsr_ccb_complete(ccb, 1); 693 } 694 break; 695 696 default: 697 printk(KERN_NOTICE 698 "arcmsr%d: scsi id = %d lun = %d" 699 " isr get command error done, " 700 "but got unknown DeviceStatus = 0x%x \n" 701 , acb->host->host_no 702 , id 703 , lun 704 , ccb->arcmsr_cdb.DeviceStatus); 705 acb->devstate[id][lun] = ARECA_RAID_GONE; 706 ccb->pcmd->result = DID_NO_CONNECT << 16; 707 arcmsr_ccb_complete(ccb, 1); 708 break; 709 } 710 } 711} 712 713static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb) 714 715{ 716 struct CommandControlBlock *ccb; 717 718 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); 719 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 720 if (ccb->startdone == ARCMSR_CCB_ABORTED) { 721 struct scsi_cmnd *abortcmd = ccb->pcmd; 722 if (abortcmd) { 723 abortcmd->result |= DID_ABORT << 16; 724 arcmsr_ccb_complete(ccb, 1); 725 printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \ 726 isr got aborted command \n", acb->host->host_no, ccb); 727 } 728 } 729 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \ 730 done acb = '0x%p'" 731 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x" 732 " ccboutstandingcount = %d \n" 733 , acb->host->host_no 734 , acb 735 , ccb 736 , ccb->acb 737 , ccb->startdone 738 , atomic_read(&acb->ccboutstandingcount)); 739 } 740 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 741} 742 743static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb) 744{ 745 int i = 0; 746 uint32_t flag_ccb; 747 748 switch (acb->adapter_type) { 749 750 case ACB_ADAPTER_TYPE_A: { 751 struct MessageUnit_A __iomem *reg = \ 752 (struct MessageUnit_A *)acb->pmu; 753 uint32_t outbound_intstatus; 754 outbound_intstatus = readl(®->outbound_intstatus) & \ 755 acb->outbound_int_enable; 756 /*clear and abort all outbound posted Q*/ 757 writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ 758 while (((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) \ 759 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) { 760 arcmsr_drain_donequeue(acb, flag_ccb); 761 } 762 } 763 break; 764 765 case ACB_ADAPTER_TYPE_B: { 766 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 767 /*clear all outbound posted Q*/ 768 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) { 769 if ((flag_ccb = readl(®->done_qbuffer[i])) != 0) { 770 writel(0, ®->done_qbuffer[i]); 771 arcmsr_drain_donequeue(acb, flag_ccb); 772 } 773 writel(0, ®->post_qbuffer[i]); 774 } 775 reg->doneq_index = 0; 776 reg->postq_index = 0; 777 } 778 break; 779 } 780} 781static void arcmsr_remove(struct pci_dev *pdev) 782{ 783 struct Scsi_Host *host = pci_get_drvdata(pdev); 784 struct AdapterControlBlock *acb = 785 (struct AdapterControlBlock *) host->hostdata; 786 int poll_count = 0; 787 788 arcmsr_free_sysfs_attr(acb); 789 scsi_remove_host(host); 790 arcmsr_stop_adapter_bgrb(acb); 791 arcmsr_flush_adapter_cache(acb); 792 arcmsr_disable_outbound_ints(acb); 793 acb->acb_flags |= ACB_F_SCSISTOPADAPTER; 794 acb->acb_flags &= ~ACB_F_IOP_INITED; 795 796 for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) { 797 if (!atomic_read(&acb->ccboutstandingcount)) 798 break; 799 arcmsr_interrupt(acb);/* FIXME: need spinlock */ 800 msleep(25); 801 } 802 803 if (atomic_read(&acb->ccboutstandingcount)) { 804 int i; 805 806 arcmsr_abort_allcmd(acb); 807 arcmsr_done4abort_postqueue(acb); 808 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 809 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 810 if (ccb->startdone == ARCMSR_CCB_START) { 811 ccb->startdone = ARCMSR_CCB_ABORTED; 812 ccb->pcmd->result = DID_ABORT << 16; 813 arcmsr_ccb_complete(ccb, 1); 814 } 815 } 816 } 817 818 free_irq(pdev->irq, acb); 819 iounmap(acb->pmu); 820 arcmsr_free_ccb_pool(acb); 821 pci_release_regions(pdev); 822 823 scsi_host_put(host); 824 825 pci_disable_device(pdev); 826 pci_set_drvdata(pdev, NULL); 827} 828 829static void arcmsr_shutdown(struct pci_dev *pdev) 830{ 831 struct Scsi_Host *host = pci_get_drvdata(pdev); 832 struct AdapterControlBlock *acb = 833 (struct AdapterControlBlock *)host->hostdata; 834 835 arcmsr_stop_adapter_bgrb(acb); 836 arcmsr_flush_adapter_cache(acb); 837} 838 839static int arcmsr_module_init(void) 840{ 841 int error = 0; 842 843 error = pci_register_driver(&arcmsr_pci_driver); 844 return error; 845} 846 847static void arcmsr_module_exit(void) 848{ 849 pci_unregister_driver(&arcmsr_pci_driver); 850} 851module_init(arcmsr_module_init); 852module_exit(arcmsr_module_exit); 853 854static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \ 855 u32 intmask_org) 856{ 857 u32 mask; 858 859 switch (acb->adapter_type) { 860 861 case ACB_ADAPTER_TYPE_A : { 862 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 863 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE | 864 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE); 865 writel(mask, ®->outbound_intmask); 866 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff; 867 } 868 break; 869 870 case ACB_ADAPTER_TYPE_B : { 871 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 872 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \ 873 ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE); 874 writel(mask, reg->iop2drv_doorbell_mask_reg); 875 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f; 876 } 877 } 878} 879 880static void arcmsr_build_ccb(struct AdapterControlBlock *acb, 881 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd) 882{ 883 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 884 int8_t *psge = (int8_t *)&arcmsr_cdb->u; 885 uint32_t address_lo, address_hi; 886 int arccdbsize = 0x30; 887 int nseg; 888 889 ccb->pcmd = pcmd; 890 memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB)); 891 arcmsr_cdb->Bus = 0; 892 arcmsr_cdb->TargetID = pcmd->device->id; 893 arcmsr_cdb->LUN = pcmd->device->lun; 894 arcmsr_cdb->Function = 1; 895 arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len; 896 arcmsr_cdb->Context = (unsigned long)arcmsr_cdb; 897 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len); 898 899 nseg = scsi_dma_map(pcmd); 900 BUG_ON(nseg < 0); 901 902 if (nseg) { 903 int length, i, cdb_sgcount = 0; 904 struct scatterlist *sg; 905 906 /* map stor port SG list to our iop SG List. */ 907 scsi_for_each_sg(pcmd, sg, nseg, i) { 908 /* Get the physical address of the current data pointer */ 909 length = cpu_to_le32(sg_dma_len(sg)); 910 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg))); 911 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg))); 912 if (address_hi == 0) { 913 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge; 914 915 pdma_sg->address = address_lo; 916 pdma_sg->length = length; 917 psge += sizeof (struct SG32ENTRY); 918 arccdbsize += sizeof (struct SG32ENTRY); 919 } else { 920 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge; 921 922 pdma_sg->addresshigh = address_hi; 923 pdma_sg->address = address_lo; 924 pdma_sg->length = length|IS_SG64_ADDR; 925 psge += sizeof (struct SG64ENTRY); 926 arccdbsize += sizeof (struct SG64ENTRY); 927 } 928 cdb_sgcount++; 929 } 930 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount; 931 arcmsr_cdb->DataLength = scsi_bufflen(pcmd); 932 if ( arccdbsize > 256) 933 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE; 934 } 935 if (pcmd->sc_data_direction == DMA_TO_DEVICE ) { 936 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE; 937 ccb->ccb_flags |= CCB_FLAG_WRITE; 938 } 939} 940 941static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb) 942{ 943 uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr; 944 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 945 atomic_inc(&acb->ccboutstandingcount); 946 ccb->startdone = ARCMSR_CCB_START; 947 948 switch (acb->adapter_type) { 949 case ACB_ADAPTER_TYPE_A: { 950 struct MessageUnit_A *reg = (struct MessageUnit_A *)acb->pmu; 951 952 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) 953 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE, 954 ®->inbound_queueport); 955 else { 956 writel(cdb_shifted_phyaddr, ®->inbound_queueport); 957 } 958 } 959 break; 960 961 case ACB_ADAPTER_TYPE_B: { 962 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 963 uint32_t ending_index, index = reg->postq_index; 964 965 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE); 966 writel(0, ®->post_qbuffer[ending_index]); 967 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) { 968 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\ 969 ®->post_qbuffer[index]); 970 } 971 else { 972 writel(cdb_shifted_phyaddr, ®->post_qbuffer[index]); 973 } 974 index++; 975 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */ 976 reg->postq_index = index; 977 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell_reg); 978 } 979 break; 980 } 981} 982 983static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb) 984{ 985 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 986 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 987 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, ®->inbound_msgaddr0); 988 989 if (arcmsr_hba_wait_msgint_ready(acb)) { 990 printk(KERN_NOTICE 991 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" 992 , acb->host->host_no); 993 } 994} 995 996static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb) 997{ 998 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 999 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 1000 writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg); 1001 1002 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1003 printk(KERN_NOTICE 1004 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" 1005 , acb->host->host_no); 1006 } 1007} 1008 1009static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb) 1010{ 1011 switch (acb->adapter_type) { 1012 case ACB_ADAPTER_TYPE_A: { 1013 arcmsr_stop_hba_bgrb(acb); 1014 } 1015 break; 1016 1017 case ACB_ADAPTER_TYPE_B: { 1018 arcmsr_stop_hbb_bgrb(acb); 1019 } 1020 break; 1021 } 1022} 1023 1024static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb) 1025{ 1026 dma_free_coherent(&acb->pdev->dev, 1027 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20, 1028 acb->dma_coherent, 1029 acb->dma_coherent_handle); 1030} 1031 1032void arcmsr_iop_message_read(struct AdapterControlBlock *acb) 1033{ 1034 switch (acb->adapter_type) { 1035 case ACB_ADAPTER_TYPE_A: { 1036 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1037 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); 1038 } 1039 break; 1040 1041 case ACB_ADAPTER_TYPE_B: { 1042 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 1043 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); 1044 } 1045 break; 1046 } 1047} 1048 1049static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb) 1050{ 1051 switch (acb->adapter_type) { 1052 case ACB_ADAPTER_TYPE_A: { 1053 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1054 /* 1055 ** push inbound doorbell tell iop, driver data write ok 1056 ** and wait reply on next hwinterrupt for next Qbuffer post 1057 */ 1058 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, ®->inbound_doorbell); 1059 } 1060 break; 1061 1062 case ACB_ADAPTER_TYPE_B: { 1063 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 1064 /* 1065 ** push inbound doorbell tell iop, driver data write ok 1066 ** and wait reply on next hwinterrupt for next Qbuffer post 1067 */ 1068 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell_reg); 1069 } 1070 break; 1071 } 1072} 1073 1074struct QBUFFER *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb) 1075{ 1076 static struct QBUFFER *qbuffer; 1077 1078 switch (acb->adapter_type) { 1079 1080 case ACB_ADAPTER_TYPE_A: { 1081 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1082 qbuffer = (struct QBUFFER __iomem *) ®->message_rbuffer; 1083 } 1084 break; 1085 1086 case ACB_ADAPTER_TYPE_B: { 1087 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 1088 qbuffer = (struct QBUFFER __iomem *) reg->ioctl_rbuffer_reg; 1089 } 1090 break; 1091 } 1092 return qbuffer; 1093} 1094 1095static struct QBUFFER *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb) 1096{ 1097 static struct QBUFFER *pqbuffer; 1098 1099 switch (acb->adapter_type) { 1100 1101 case ACB_ADAPTER_TYPE_A: { 1102 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1103 pqbuffer = (struct QBUFFER *) ®->message_wbuffer; 1104 } 1105 break; 1106 1107 case ACB_ADAPTER_TYPE_B: { 1108 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 1109 pqbuffer = (struct QBUFFER __iomem *)reg->ioctl_wbuffer_reg; 1110 } 1111 break; 1112 } 1113 return pqbuffer; 1114} 1115 1116static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb) 1117{ 1118 struct QBUFFER *prbuffer; 1119 struct QBUFFER *pQbuffer; 1120 uint8_t *iop_data; 1121 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex; 1122 1123 rqbuf_lastindex = acb->rqbuf_lastindex; 1124 rqbuf_firstindex = acb->rqbuf_firstindex; 1125 prbuffer = arcmsr_get_iop_rqbuffer(acb); 1126 iop_data = (uint8_t *)prbuffer->data; 1127 iop_len = prbuffer->data_len; 1128 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex -1)&(ARCMSR_MAX_QBUFFER -1); 1129 1130 if (my_empty_len >= iop_len) 1131 { 1132 while (iop_len > 0) { 1133 pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex]; 1134 memcpy(pQbuffer, iop_data,1); 1135 rqbuf_lastindex++; 1136 rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1137 iop_data++; 1138 iop_len--; 1139 } 1140 acb->rqbuf_lastindex = rqbuf_lastindex; 1141 arcmsr_iop_message_read(acb); 1142 } 1143 1144 else { 1145 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW; 1146 } 1147} 1148 1149static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb) 1150{ 1151 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED; 1152 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) { 1153 uint8_t *pQbuffer; 1154 struct QBUFFER *pwbuffer; 1155 uint8_t *iop_data; 1156 int32_t allxfer_len = 0; 1157 1158 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 1159 pwbuffer = arcmsr_get_iop_wqbuffer(acb); 1160 iop_data = (uint8_t __iomem *)pwbuffer->data; 1161 1162 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \ 1163 (allxfer_len < 124)) { 1164 pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex]; 1165 memcpy(iop_data, pQbuffer, 1); 1166 acb->wqbuf_firstindex++; 1167 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1168 iop_data++; 1169 allxfer_len++; 1170 } 1171 pwbuffer->data_len = allxfer_len; 1172 1173 arcmsr_iop_message_wrote(acb); 1174 } 1175 1176 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) { 1177 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED; 1178 } 1179} 1180 1181static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb) 1182{ 1183 uint32_t outbound_doorbell; 1184 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1185 1186 outbound_doorbell = readl(®->outbound_doorbell); 1187 writel(outbound_doorbell, ®->outbound_doorbell); 1188 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) { 1189 arcmsr_iop2drv_data_wrote_handle(acb); 1190 } 1191 1192 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) { 1193 arcmsr_iop2drv_data_read_handle(acb); 1194 } 1195} 1196 1197static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb) 1198{ 1199 uint32_t flag_ccb; 1200 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1201 1202 while ((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) { 1203 arcmsr_drain_donequeue(acb, flag_ccb); 1204 } 1205} 1206 1207static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb) 1208{ 1209 uint32_t index; 1210 uint32_t flag_ccb; 1211 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 1212 1213 index = reg->doneq_index; 1214 1215 while ((flag_ccb = readl(®->done_qbuffer[index])) != 0) { 1216 writel(0, ®->done_qbuffer[index]); 1217 arcmsr_drain_donequeue(acb, flag_ccb); 1218 index++; 1219 index %= ARCMSR_MAX_HBB_POSTQUEUE; 1220 reg->doneq_index = index; 1221 } 1222} 1223 1224static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb) 1225{ 1226 uint32_t outbound_intstatus; 1227 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1228 1229 outbound_intstatus = readl(®->outbound_intstatus) & \ 1230 acb->outbound_int_enable; 1231 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) { 1232 return 1; 1233 } 1234 writel(outbound_intstatus, ®->outbound_intstatus); 1235 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) { 1236 arcmsr_hba_doorbell_isr(acb); 1237 } 1238 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) { 1239 arcmsr_hba_postqueue_isr(acb); 1240 } 1241 return 0; 1242} 1243 1244static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb) 1245{ 1246 uint32_t outbound_doorbell; 1247 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 1248 1249 outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \ 1250 acb->outbound_int_enable; 1251 if (!outbound_doorbell) 1252 return 1; 1253 1254 writel(~outbound_doorbell, reg->iop2drv_doorbell_reg); 1255 1256 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) { 1257 arcmsr_iop2drv_data_wrote_handle(acb); 1258 } 1259 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) { 1260 arcmsr_iop2drv_data_read_handle(acb); 1261 } 1262 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) { 1263 arcmsr_hbb_postqueue_isr(acb); 1264 } 1265 1266 return 0; 1267} 1268 1269static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb) 1270{ 1271 switch (acb->adapter_type) { 1272 case ACB_ADAPTER_TYPE_A: { 1273 if (arcmsr_handle_hba_isr(acb)) { 1274 return IRQ_NONE; 1275 } 1276 } 1277 break; 1278 1279 case ACB_ADAPTER_TYPE_B: { 1280 if (arcmsr_handle_hbb_isr(acb)) { 1281 return IRQ_NONE; 1282 } 1283 } 1284 break; 1285 } 1286 return IRQ_HANDLED; 1287} 1288 1289static void arcmsr_iop_parking(struct AdapterControlBlock *acb) 1290{ 1291 if (acb) { 1292 /* stop adapter background rebuild */ 1293 if (acb->acb_flags & ACB_F_MSG_START_BGRB) { 1294 uint32_t intmask_org; 1295 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 1296 intmask_org = arcmsr_disable_outbound_ints(acb); 1297 arcmsr_stop_adapter_bgrb(acb); 1298 arcmsr_flush_adapter_cache(acb); 1299 arcmsr_enable_outbound_ints(acb, intmask_org); 1300 } 1301 } 1302} 1303 1304void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb) 1305{ 1306 int32_t wqbuf_firstindex, wqbuf_lastindex; 1307 uint8_t *pQbuffer; 1308 struct QBUFFER *pwbuffer; 1309 uint8_t *iop_data; 1310 int32_t allxfer_len = 0; 1311 1312 pwbuffer = arcmsr_get_iop_wqbuffer(acb); 1313 iop_data = (uint8_t __iomem *)pwbuffer->data; 1314 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) { 1315 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 1316 wqbuf_firstindex = acb->wqbuf_firstindex; 1317 wqbuf_lastindex = acb->wqbuf_lastindex; 1318 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) { 1319 pQbuffer = &acb->wqbuffer[wqbuf_firstindex]; 1320 memcpy(iop_data, pQbuffer, 1); 1321 wqbuf_firstindex++; 1322 wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1323 iop_data++; 1324 allxfer_len++; 1325 } 1326 acb->wqbuf_firstindex = wqbuf_firstindex; 1327 pwbuffer->data_len = allxfer_len; 1328 arcmsr_iop_message_wrote(acb); 1329 } 1330} 1331 1332static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \ 1333 struct scsi_cmnd *cmd) 1334{ 1335 struct CMD_MESSAGE_FIELD *pcmdmessagefld; 1336 int retvalue = 0, transfer_len = 0; 1337 char *buffer; 1338 struct scatterlist *sg; 1339 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 | 1340 (uint32_t ) cmd->cmnd[6] << 16 | 1341 (uint32_t ) cmd->cmnd[7] << 8 | 1342 (uint32_t ) cmd->cmnd[8]; 1343 /* 4 bytes: Areca io control code */ 1344 1345 sg = scsi_sglist(cmd); 1346 buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; 1347 if (scsi_sg_count(cmd) > 1) { 1348 retvalue = ARCMSR_MESSAGE_FAIL; 1349 goto message_out; 1350 } 1351 transfer_len += sg->length; 1352 1353 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) { 1354 retvalue = ARCMSR_MESSAGE_FAIL; 1355 goto message_out; 1356 } 1357 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer; 1358 switch(controlcode) { 1359 1360 case ARCMSR_MESSAGE_READ_RQBUFFER: { 1361 unsigned long *ver_addr; 1362 dma_addr_t buf_handle; 1363 uint8_t *pQbuffer, *ptmpQbuffer; 1364 int32_t allxfer_len = 0; 1365 1366 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle); 1367 if (!ver_addr) { 1368 retvalue = ARCMSR_MESSAGE_FAIL; 1369 goto message_out; 1370 } 1371 ptmpQbuffer = (uint8_t *) ver_addr; 1372 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex) 1373 && (allxfer_len < 1031)) { 1374 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex]; 1375 memcpy(ptmpQbuffer, pQbuffer, 1); 1376 acb->rqbuf_firstindex++; 1377 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1378 ptmpQbuffer++; 1379 allxfer_len++; 1380 } 1381 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1382 1383 struct QBUFFER *prbuffer; 1384 uint8_t *iop_data; 1385 int32_t iop_len; 1386 1387 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1388 prbuffer = arcmsr_get_iop_rqbuffer(acb); 1389 iop_data = (uint8_t *)prbuffer->data; 1390 iop_len = readl(&prbuffer->data_len); 1391 while (iop_len > 0) { 1392 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data); 1393 acb->rqbuf_lastindex++; 1394 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1395 iop_data++; 1396 iop_len--; 1397 } 1398 arcmsr_iop_message_read(acb); 1399 } 1400 memcpy(pcmdmessagefld->messagedatabuffer, (uint8_t *)ver_addr, allxfer_len); 1401 pcmdmessagefld->cmdmessage.Length = allxfer_len; 1402 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1403 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle); 1404 } 1405 break; 1406 1407 case ARCMSR_MESSAGE_WRITE_WQBUFFER: { 1408 unsigned long *ver_addr; 1409 dma_addr_t buf_handle; 1410 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex; 1411 uint8_t *pQbuffer, *ptmpuserbuffer; 1412 1413 ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle); 1414 if (!ver_addr) { 1415 retvalue = ARCMSR_MESSAGE_FAIL; 1416 goto message_out; 1417 } 1418 ptmpuserbuffer = (uint8_t *)ver_addr; 1419 user_len = pcmdmessagefld->cmdmessage.Length; 1420 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len); 1421 wqbuf_lastindex = acb->wqbuf_lastindex; 1422 wqbuf_firstindex = acb->wqbuf_firstindex; 1423 if (wqbuf_lastindex != wqbuf_firstindex) { 1424 struct SENSE_DATA *sensebuffer = 1425 (struct SENSE_DATA *)cmd->sense_buffer; 1426 arcmsr_post_ioctldata2iop(acb); 1427 /* has error report sensedata */ 1428 sensebuffer->ErrorCode = 0x70; 1429 sensebuffer->SenseKey = ILLEGAL_REQUEST; 1430 sensebuffer->AdditionalSenseLength = 0x0A; 1431 sensebuffer->AdditionalSenseCode = 0x20; 1432 sensebuffer->Valid = 1; 1433 retvalue = ARCMSR_MESSAGE_FAIL; 1434 } else { 1435 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1) 1436 &(ARCMSR_MAX_QBUFFER - 1); 1437 if (my_empty_len >= user_len) { 1438 while (user_len > 0) { 1439 pQbuffer = 1440 &acb->wqbuffer[acb->wqbuf_lastindex]; 1441 memcpy(pQbuffer, ptmpuserbuffer, 1); 1442 acb->wqbuf_lastindex++; 1443 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1444 ptmpuserbuffer++; 1445 user_len--; 1446 } 1447 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { 1448 acb->acb_flags &= 1449 ~ACB_F_MESSAGE_WQBUFFER_CLEARED; 1450 arcmsr_post_ioctldata2iop(acb); 1451 } 1452 } else { 1453 /* has error report sensedata */ 1454 struct SENSE_DATA *sensebuffer = 1455 (struct SENSE_DATA *)cmd->sense_buffer; 1456 sensebuffer->ErrorCode = 0x70; 1457 sensebuffer->SenseKey = ILLEGAL_REQUEST; 1458 sensebuffer->AdditionalSenseLength = 0x0A; 1459 sensebuffer->AdditionalSenseCode = 0x20; 1460 sensebuffer->Valid = 1; 1461 retvalue = ARCMSR_MESSAGE_FAIL; 1462 } 1463 } 1464 pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle); 1465 } 1466 break; 1467 1468 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: { 1469 uint8_t *pQbuffer = acb->rqbuffer; 1470 1471 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1472 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1473 arcmsr_iop_message_read(acb); 1474 } 1475 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED; 1476 acb->rqbuf_firstindex = 0; 1477 acb->rqbuf_lastindex = 0; 1478 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 1479 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1480 } 1481 break; 1482 1483 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: { 1484 uint8_t *pQbuffer = acb->wqbuffer; 1485 1486 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1487 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1488 arcmsr_iop_message_read(acb); 1489 } 1490 acb->acb_flags |= 1491 (ACB_F_MESSAGE_WQBUFFER_CLEARED | 1492 ACB_F_MESSAGE_WQBUFFER_READED); 1493 acb->wqbuf_firstindex = 0; 1494 acb->wqbuf_lastindex = 0; 1495 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 1496 pcmdmessagefld->cmdmessage.ReturnCode = 1497 ARCMSR_MESSAGE_RETURNCODE_OK; 1498 } 1499 break; 1500 1501 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: { 1502 uint8_t *pQbuffer; 1503 1504 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1505 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1506 arcmsr_iop_message_read(acb); 1507 } 1508 acb->acb_flags |= 1509 (ACB_F_MESSAGE_WQBUFFER_CLEARED 1510 | ACB_F_MESSAGE_RQBUFFER_CLEARED 1511 | ACB_F_MESSAGE_WQBUFFER_READED); 1512 acb->rqbuf_firstindex = 0; 1513 acb->rqbuf_lastindex = 0; 1514 acb->wqbuf_firstindex = 0; 1515 acb->wqbuf_lastindex = 0; 1516 pQbuffer = acb->rqbuffer; 1517 memset(pQbuffer, 0, sizeof(struct QBUFFER)); 1518 pQbuffer = acb->wqbuffer; 1519 memset(pQbuffer, 0, sizeof(struct QBUFFER)); 1520 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1521 } 1522 break; 1523 1524 case ARCMSR_MESSAGE_RETURN_CODE_3F: { 1525 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F; 1526 } 1527 break; 1528 1529 case ARCMSR_MESSAGE_SAY_HELLO: { 1530 int8_t *hello_string = "Hello! I am ARCMSR"; 1531 1532 memcpy(pcmdmessagefld->messagedatabuffer, hello_string 1533 , (int16_t)strlen(hello_string)); 1534 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1535 } 1536 break; 1537 1538 case ARCMSR_MESSAGE_SAY_GOODBYE: 1539 arcmsr_iop_parking(acb); 1540 break; 1541 1542 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: 1543 arcmsr_flush_adapter_cache(acb); 1544 break; 1545 1546 default: 1547 retvalue = ARCMSR_MESSAGE_FAIL; 1548 } 1549 message_out: 1550 sg = scsi_sglist(cmd); 1551 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1552 return retvalue; 1553} 1554 1555static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb) 1556{ 1557 struct list_head *head = &acb->ccb_free_list; 1558 struct CommandControlBlock *ccb = NULL; 1559 1560 if (!list_empty(head)) { 1561 ccb = list_entry(head->next, struct CommandControlBlock, list); 1562 list_del(head->next); 1563 } 1564 return ccb; 1565} 1566 1567static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb, 1568 struct scsi_cmnd *cmd) 1569{ 1570 switch (cmd->cmnd[0]) { 1571 case INQUIRY: { 1572 unsigned char inqdata[36]; 1573 char *buffer; 1574 struct scatterlist *sg; 1575 1576 if (cmd->device->lun) { 1577 cmd->result = (DID_TIME_OUT << 16); 1578 cmd->scsi_done(cmd); 1579 return; 1580 } 1581 inqdata[0] = TYPE_PROCESSOR; 1582 /* Periph Qualifier & Periph Dev Type */ 1583 inqdata[1] = 0; 1584 /* rem media bit & Dev Type Modifier */ 1585 inqdata[2] = 0; 1586 /* ISO, ECMA, & ANSI versions */ 1587 inqdata[4] = 31; 1588 /* length of additional data */ 1589 strncpy(&inqdata[8], "Areca ", 8); 1590 /* Vendor Identification */ 1591 strncpy(&inqdata[16], "RAID controller ", 16); 1592 /* Product Identification */ 1593 strncpy(&inqdata[32], "R001", 4); /* Product Revision */ 1594 1595 sg = scsi_sglist(cmd); 1596 buffer = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; 1597 1598 memcpy(buffer, inqdata, sizeof(inqdata)); 1599 sg = scsi_sglist(cmd); 1600 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1601 1602 cmd->scsi_done(cmd); 1603 } 1604 break; 1605 case WRITE_BUFFER: 1606 case READ_BUFFER: { 1607 if (arcmsr_iop_message_xfer(acb, cmd)) 1608 cmd->result = (DID_ERROR << 16); 1609 cmd->scsi_done(cmd); 1610 } 1611 break; 1612 default: 1613 cmd->scsi_done(cmd); 1614 } 1615} 1616 1617static int arcmsr_queue_command(struct scsi_cmnd *cmd, 1618 void (* done)(struct scsi_cmnd *)) 1619{ 1620 struct Scsi_Host *host = cmd->device->host; 1621 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 1622 struct CommandControlBlock *ccb; 1623 int target = cmd->device->id; 1624 int lun = cmd->device->lun; 1625 1626 cmd->scsi_done = done; 1627 cmd->host_scribble = NULL; 1628 cmd->result = 0; 1629 if (acb->acb_flags & ACB_F_BUS_RESET) { 1630 printk(KERN_NOTICE "arcmsr%d: bus reset" 1631 " and return busy \n" 1632 , acb->host->host_no); 1633 return SCSI_MLQUEUE_HOST_BUSY; 1634 } 1635 if (target == 16) { 1636 /* virtual device for iop message transfer */ 1637 arcmsr_handle_virtual_command(acb, cmd); 1638 return 0; 1639 } 1640 if (acb->devstate[target][lun] == ARECA_RAID_GONE) { 1641 uint8_t block_cmd; 1642 1643 block_cmd = cmd->cmnd[0] & 0x0f; 1644 if (block_cmd == 0x08 || block_cmd == 0x0a) { 1645 printk(KERN_NOTICE 1646 "arcmsr%d: block 'read/write'" 1647 "command with gone raid volume" 1648 " Cmd = %2x, TargetId = %d, Lun = %d \n" 1649 , acb->host->host_no 1650 , cmd->cmnd[0] 1651 , target, lun); 1652 cmd->result = (DID_NO_CONNECT << 16); 1653 cmd->scsi_done(cmd); 1654 return 0; 1655 } 1656 } 1657 if (atomic_read(&acb->ccboutstandingcount) >= 1658 ARCMSR_MAX_OUTSTANDING_CMD) 1659 return SCSI_MLQUEUE_HOST_BUSY; 1660 1661 ccb = arcmsr_get_freeccb(acb); 1662 if (!ccb) 1663 return SCSI_MLQUEUE_HOST_BUSY; 1664 1665 arcmsr_build_ccb(acb, ccb, cmd); 1666 arcmsr_post_ccb(acb, ccb); 1667 return 0; 1668} 1669 1670static void arcmsr_get_hba_config(struct AdapterControlBlock *acb) 1671{ 1672 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1673 char *acb_firm_model = acb->firm_model; 1674 char *acb_firm_version = acb->firm_version; 1675 char *iop_firm_model = (char *) (®->message_rwbuffer[15]); 1676 char *iop_firm_version = (char *) (®->message_rwbuffer[17]); 1677 int count; 1678 1679 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, ®->inbound_msgaddr0); 1680 if (arcmsr_hba_wait_msgint_ready(acb)) { 1681 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ 1682 miscellaneous data' timeout \n", acb->host->host_no); 1683 } 1684 1685 count = 8; 1686 while (count) { 1687 *acb_firm_model = readb(iop_firm_model); 1688 acb_firm_model++; 1689 iop_firm_model++; 1690 count--; 1691 } 1692 1693 count = 16; 1694 while (count) { 1695 *acb_firm_version = readb(iop_firm_version); 1696 acb_firm_version++; 1697 iop_firm_version++; 1698 count--; 1699 } 1700 1701 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n" 1702 , acb->host->host_no 1703 , acb->firm_version); 1704 1705 acb->firm_request_len = readl(®->message_rwbuffer[1]); 1706 acb->firm_numbers_queue = readl(®->message_rwbuffer[2]); 1707 acb->firm_sdram_size = readl(®->message_rwbuffer[3]); 1708 acb->firm_hd_channels = readl(®->message_rwbuffer[4]); 1709} 1710 1711static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb) 1712{ 1713 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 1714 uint32_t *lrwbuffer = reg->msgcode_rwbuffer_reg; 1715 char *acb_firm_model = acb->firm_model; 1716 char *acb_firm_version = acb->firm_version; 1717 char *iop_firm_model = (char *) (&lrwbuffer[15]); 1718 /*firm_model,15,60-67*/ 1719 char *iop_firm_version = (char *) (&lrwbuffer[17]); 1720 /*firm_version,17,68-83*/ 1721 int count; 1722 1723 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg); 1724 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1725 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ 1726 miscellaneous data' timeout \n", acb->host->host_no); 1727 } 1728 1729 count = 8; 1730 while (count) 1731 { 1732 *acb_firm_model = readb(iop_firm_model); 1733 acb_firm_model++; 1734 iop_firm_model++; 1735 count--; 1736 } 1737 1738 count = 16; 1739 while (count) 1740 { 1741 *acb_firm_version = readb(iop_firm_version); 1742 acb_firm_version++; 1743 iop_firm_version++; 1744 count--; 1745 } 1746 1747 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n", 1748 acb->host->host_no, 1749 acb->firm_version); 1750 1751 lrwbuffer++; 1752 acb->firm_request_len = readl(lrwbuffer++); 1753 /*firm_request_len,1,04-07*/ 1754 acb->firm_numbers_queue = readl(lrwbuffer++); 1755 /*firm_numbers_queue,2,08-11*/ 1756 acb->firm_sdram_size = readl(lrwbuffer++); 1757 /*firm_sdram_size,3,12-15*/ 1758 acb->firm_hd_channels = readl(lrwbuffer); 1759 /*firm_ide_channels,4,16-19*/ 1760} 1761 1762static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb) 1763{ 1764 switch (acb->adapter_type) { 1765 case ACB_ADAPTER_TYPE_A: { 1766 arcmsr_get_hba_config(acb); 1767 } 1768 break; 1769 1770 case ACB_ADAPTER_TYPE_B: { 1771 arcmsr_get_hbb_config(acb); 1772 } 1773 break; 1774 } 1775} 1776 1777static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb, 1778 struct CommandControlBlock *poll_ccb) 1779{ 1780 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1781 struct CommandControlBlock *ccb; 1782 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0; 1783 1784 polling_hba_ccb_retry: 1785 poll_count++; 1786 outbound_intstatus = readl(®->outbound_intstatus) & acb->outbound_int_enable; 1787 writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ 1788 while (1) { 1789 if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF) { 1790 if (poll_ccb_done) 1791 break; 1792 else { 1793 msleep(25); 1794 if (poll_count > 100) 1795 break; 1796 goto polling_hba_ccb_retry; 1797 } 1798 } 1799 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); 1800 poll_ccb_done = (ccb == poll_ccb) ? 1:0; 1801 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 1802 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) { 1803 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'" 1804 " poll command abort successfully \n" 1805 , acb->host->host_no 1806 , ccb->pcmd->device->id 1807 , ccb->pcmd->device->lun 1808 , ccb); 1809 ccb->pcmd->result = DID_ABORT << 16; 1810 arcmsr_ccb_complete(ccb, 1); 1811 poll_ccb_done = 1; 1812 continue; 1813 } 1814 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" 1815 " command done ccb = '0x%p'" 1816 "ccboutstandingcount = %d \n" 1817 , acb->host->host_no 1818 , ccb 1819 , atomic_read(&acb->ccboutstandingcount)); 1820 continue; 1821 } 1822 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 1823 } 1824} 1825 1826static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \ 1827 struct CommandControlBlock *poll_ccb) 1828{ 1829 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 1830 struct CommandControlBlock *ccb; 1831 uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0; 1832 int index; 1833 1834 polling_hbb_ccb_retry: 1835 poll_count++; 1836 /* clear doorbell interrupt */ 1837 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); 1838 while (1) { 1839 index = reg->doneq_index; 1840 if ((flag_ccb = readl(®->done_qbuffer[index])) == 0) { 1841 if (poll_ccb_done) 1842 break; 1843 else { 1844 msleep(25); 1845 if (poll_count > 100) 1846 break; 1847 goto polling_hbb_ccb_retry; 1848 } 1849 } 1850 writel(0, ®->done_qbuffer[index]); 1851 index++; 1852 /*if last index number set it to 0 */ 1853 index %= ARCMSR_MAX_HBB_POSTQUEUE; 1854 reg->doneq_index = index; 1855 /* check ifcommand done with no error*/ 1856 ccb = (struct CommandControlBlock *)\ 1857 (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/ 1858 poll_ccb_done = (ccb == poll_ccb) ? 1:0; 1859 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 1860 if (ccb->startdone == ARCMSR_CCB_ABORTED) { 1861 printk(KERN_NOTICE "arcmsr%d: \ 1862 scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n" 1863 ,acb->host->host_no 1864 ,ccb->pcmd->device->id 1865 ,ccb->pcmd->device->lun 1866 ,ccb); 1867 ccb->pcmd->result = DID_ABORT << 16; 1868 arcmsr_ccb_complete(ccb, 1); 1869 continue; 1870 } 1871 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" 1872 " command done ccb = '0x%p'" 1873 "ccboutstandingcount = %d \n" 1874 , acb->host->host_no 1875 , ccb 1876 , atomic_read(&acb->ccboutstandingcount)); 1877 continue; 1878 } 1879 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 1880 } /*drain reply FIFO*/ 1881} 1882 1883static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, \ 1884 struct CommandControlBlock *poll_ccb) 1885{ 1886 switch (acb->adapter_type) { 1887 1888 case ACB_ADAPTER_TYPE_A: { 1889 arcmsr_polling_hba_ccbdone(acb,poll_ccb); 1890 } 1891 break; 1892 1893 case ACB_ADAPTER_TYPE_B: { 1894 arcmsr_polling_hbb_ccbdone(acb,poll_ccb); 1895 } 1896 } 1897} 1898 1899static int arcmsr_iop_confirm(struct AdapterControlBlock *acb) 1900{ 1901 uint32_t cdb_phyaddr, ccb_phyaddr_hi32; 1902 dma_addr_t dma_coherent_handle; 1903 /* 1904 ******************************************************************** 1905 ** here we need to tell iop 331 our freeccb.HighPart 1906 ** if freeccb.HighPart is not zero 1907 ******************************************************************** 1908 */ 1909 dma_coherent_handle = acb->dma_coherent_handle; 1910 cdb_phyaddr = (uint32_t)(dma_coherent_handle); 1911 ccb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16); 1912 /* 1913 *********************************************************************** 1914 ** if adapter type B, set window of "post command Q" 1915 *********************************************************************** 1916 */ 1917 switch (acb->adapter_type) { 1918 1919 case ACB_ADAPTER_TYPE_A: { 1920 if (ccb_phyaddr_hi32 != 0) { 1921 struct MessageUnit_A __iomem *reg = \ 1922 (struct MessageUnit_A *)acb->pmu; 1923 uint32_t intmask_org; 1924 intmask_org = arcmsr_disable_outbound_ints(acb); 1925 writel(ARCMSR_SIGNATURE_SET_CONFIG, \ 1926 ®->message_rwbuffer[0]); 1927 writel(ccb_phyaddr_hi32, ®->message_rwbuffer[1]); 1928 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \ 1929 ®->inbound_msgaddr0); 1930 if (arcmsr_hba_wait_msgint_ready(acb)) { 1931 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \ 1932 part physical address timeout\n", 1933 acb->host->host_no); 1934 return 1; 1935 } 1936 arcmsr_enable_outbound_ints(acb, intmask_org); 1937 } 1938 } 1939 break; 1940 1941 case ACB_ADAPTER_TYPE_B: { 1942 unsigned long post_queue_phyaddr; 1943 uint32_t *rwbuffer; 1944 1945 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 1946 uint32_t intmask_org; 1947 intmask_org = arcmsr_disable_outbound_ints(acb); 1948 reg->postq_index = 0; 1949 reg->doneq_index = 0; 1950 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell_reg); 1951 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1952 printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \ 1953 acb->host->host_no); 1954 return 1; 1955 } 1956 post_queue_phyaddr = cdb_phyaddr + ARCMSR_MAX_FREECCB_NUM * \ 1957 sizeof(struct CommandControlBlock) + offsetof(struct MessageUnit_B, post_qbuffer) ; 1958 rwbuffer = reg->msgcode_rwbuffer_reg; 1959 /* driver "set config" signature */ 1960 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++); 1961 /* normal should be zero */ 1962 writel(ccb_phyaddr_hi32, rwbuffer++); 1963 /* postQ size (256 + 8)*4 */ 1964 writel(post_queue_phyaddr, rwbuffer++); 1965 /* doneQ size (256 + 8)*4 */ 1966 writel(post_queue_phyaddr + 1056, rwbuffer++); 1967 /* ccb maxQ size must be --> [(256 + 8)*4]*/ 1968 writel(1056, rwbuffer); 1969 1970 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell_reg); 1971 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1972 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \ 1973 timeout \n",acb->host->host_no); 1974 return 1; 1975 } 1976 1977 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell_reg); 1978 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1979 printk(KERN_NOTICE "arcmsr%d: 'can not set diver mode \n"\ 1980 ,acb->host->host_no); 1981 return 1; 1982 } 1983 arcmsr_enable_outbound_ints(acb, intmask_org); 1984 } 1985 break; 1986 } 1987 return 0; 1988} 1989 1990static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb) 1991{ 1992 uint32_t firmware_state = 0; 1993 1994 switch (acb->adapter_type) { 1995 1996 case ACB_ADAPTER_TYPE_A: { 1997 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 1998 do { 1999 firmware_state = readl(®->outbound_msgaddr1); 2000 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0); 2001 } 2002 break; 2003 2004 case ACB_ADAPTER_TYPE_B: { 2005 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 2006 do { 2007 firmware_state = readl(reg->iop2drv_doorbell_reg); 2008 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0); 2009 } 2010 break; 2011 } 2012} 2013 2014static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb) 2015{ 2016 struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu; 2017 acb->acb_flags |= ACB_F_MSG_START_BGRB; 2018 writel(ARCMSR_INBOUND_MESG0_START_BGRB, ®->inbound_msgaddr0); 2019 if (arcmsr_hba_wait_msgint_ready(acb)) { 2020 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ 2021 rebulid' timeout \n", acb->host->host_no); 2022 } 2023} 2024 2025static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb) 2026{ 2027 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 2028 acb->acb_flags |= ACB_F_MSG_START_BGRB; 2029 writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell_reg); 2030 if (arcmsr_hbb_wait_msgint_ready(acb)) { 2031 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ 2032 rebulid' timeout \n",acb->host->host_no); 2033 } 2034} 2035 2036static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb) 2037{ 2038 switch (acb->adapter_type) { 2039 case ACB_ADAPTER_TYPE_A: 2040 arcmsr_start_hba_bgrb(acb); 2041 break; 2042 case ACB_ADAPTER_TYPE_B: 2043 arcmsr_start_hbb_bgrb(acb); 2044 break; 2045 } 2046} 2047 2048static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb) 2049{ 2050 switch (acb->adapter_type) { 2051 case ACB_ADAPTER_TYPE_A: { 2052 struct MessageUnit_A *reg = (struct MessageUnit_A *)acb->pmu; 2053 uint32_t outbound_doorbell; 2054 /* empty doorbell Qbuffer if door bell ringed */ 2055 outbound_doorbell = readl(®->outbound_doorbell); 2056 /*clear doorbell interrupt */ 2057 writel(outbound_doorbell, ®->outbound_doorbell); 2058 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); 2059 } 2060 break; 2061 2062 case ACB_ADAPTER_TYPE_B: { 2063 struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu; 2064 /*clear interrupt and message state*/ 2065 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); 2066 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); 2067 /* let IOP know data has been read */ 2068 } 2069 break; 2070 } 2071} 2072 2073static void arcmsr_iop_init(struct AdapterControlBlock *acb) 2074{ 2075 uint32_t intmask_org; 2076 2077 arcmsr_wait_firmware_ready(acb); 2078 arcmsr_iop_confirm(acb); 2079 /* disable all outbound interrupt */ 2080 intmask_org = arcmsr_disable_outbound_ints(acb); 2081 arcmsr_get_firmware_spec(acb); 2082 /*start background rebuild*/ 2083 arcmsr_start_adapter_bgrb(acb); 2084 /* empty doorbell Qbuffer if door bell ringed */ 2085 arcmsr_clear_doorbell_queue_buffer(acb); 2086 /* enable outbound Post Queue,outbound doorbell Interrupt */ 2087 arcmsr_enable_outbound_ints(acb, intmask_org); 2088 acb->acb_flags |= ACB_F_IOP_INITED; 2089} 2090 2091static void arcmsr_iop_reset(struct AdapterControlBlock *acb) 2092{ 2093 struct CommandControlBlock *ccb; 2094 uint32_t intmask_org; 2095 int i = 0; 2096 2097 if (atomic_read(&acb->ccboutstandingcount) != 0) { 2098 /* talk to iop 331 outstanding command aborted */ 2099 arcmsr_abort_allcmd(acb); 2100 2101 /* wait for 3 sec for all command aborted*/ 2102 ssleep(3); 2103 2104 /* disable all outbound interrupt */ 2105 intmask_org = arcmsr_disable_outbound_ints(acb); 2106 /* clear all outbound posted Q */ 2107 arcmsr_done4abort_postqueue(acb); 2108 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2109 ccb = acb->pccb_pool[i]; 2110 if (ccb->startdone == ARCMSR_CCB_START) { 2111 ccb->startdone = ARCMSR_CCB_ABORTED; 2112 arcmsr_ccb_complete(ccb, 1); 2113 } 2114 } 2115 /* enable all outbound interrupt */ 2116 arcmsr_enable_outbound_ints(acb, intmask_org); 2117 } 2118} 2119 2120static int arcmsr_bus_reset(struct scsi_cmnd *cmd) 2121{ 2122 struct AdapterControlBlock *acb = 2123 (struct AdapterControlBlock *)cmd->device->host->hostdata; 2124 int i; 2125 2126 acb->num_resets++; 2127 acb->acb_flags |= ACB_F_BUS_RESET; 2128 for (i = 0; i < 400; i++) { 2129 if (!atomic_read(&acb->ccboutstandingcount)) 2130 break; 2131 arcmsr_interrupt(acb);/* FIXME: need spinlock */ 2132 msleep(25); 2133 } 2134 arcmsr_iop_reset(acb); 2135 acb->acb_flags &= ~ACB_F_BUS_RESET; 2136 return SUCCESS; 2137} 2138 2139static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb, 2140 struct CommandControlBlock *ccb) 2141{ 2142 u32 intmask; 2143 2144 ccb->startdone = ARCMSR_CCB_ABORTED; 2145 2146 /* 2147 ** Wait for 3 sec for all command done. 2148 */ 2149 ssleep(3); 2150 2151 intmask = arcmsr_disable_outbound_ints(acb); 2152 arcmsr_polling_ccbdone(acb, ccb); 2153 arcmsr_enable_outbound_ints(acb, intmask); 2154} 2155 2156static int arcmsr_abort(struct scsi_cmnd *cmd) 2157{ 2158 struct AdapterControlBlock *acb = 2159 (struct AdapterControlBlock *)cmd->device->host->hostdata; 2160 int i = 0; 2161 2162 printk(KERN_NOTICE 2163 "arcmsr%d: abort device command of scsi id = %d lun = %d \n", 2164 acb->host->host_no, cmd->device->id, cmd->device->lun); 2165 acb->num_aborts++; 2166 /* 2167 ************************************************ 2168 ** the all interrupt service routine is locked 2169 ** we need to handle it as soon as possible and exit 2170 ************************************************ 2171 */ 2172 if (!atomic_read(&acb->ccboutstandingcount)) 2173 return SUCCESS; 2174 2175 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2176 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 2177 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) { 2178 arcmsr_abort_one_cmd(acb, ccb); 2179 break; 2180 } 2181 } 2182 2183 return SUCCESS; 2184} 2185 2186static const char *arcmsr_info(struct Scsi_Host *host) 2187{ 2188 struct AdapterControlBlock *acb = 2189 (struct AdapterControlBlock *) host->hostdata; 2190 static char buf[256]; 2191 char *type; 2192 int raid6 = 1; 2193 2194 switch (acb->pdev->device) { 2195 case PCI_DEVICE_ID_ARECA_1110: 2196 case PCI_DEVICE_ID_ARECA_1200: 2197 case PCI_DEVICE_ID_ARECA_1202: 2198 case PCI_DEVICE_ID_ARECA_1210: 2199 raid6 = 0; 2200 /*FALLTHRU*/ 2201 case PCI_DEVICE_ID_ARECA_1120: 2202 case PCI_DEVICE_ID_ARECA_1130: 2203 case PCI_DEVICE_ID_ARECA_1160: 2204 case PCI_DEVICE_ID_ARECA_1170: 2205 case PCI_DEVICE_ID_ARECA_1201: 2206 case PCI_DEVICE_ID_ARECA_1220: 2207 case PCI_DEVICE_ID_ARECA_1230: 2208 case PCI_DEVICE_ID_ARECA_1260: 2209 case PCI_DEVICE_ID_ARECA_1270: 2210 case PCI_DEVICE_ID_ARECA_1280: 2211 type = "SATA"; 2212 break; 2213 case PCI_DEVICE_ID_ARECA_1380: 2214 case PCI_DEVICE_ID_ARECA_1381: 2215 case PCI_DEVICE_ID_ARECA_1680: 2216 case PCI_DEVICE_ID_ARECA_1681: 2217 type = "SAS"; 2218 break; 2219 default: 2220 type = "X-TYPE"; 2221 break; 2222 } 2223 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s", 2224 type, raid6 ? "( RAID6 capable)" : "", 2225 ARCMSR_DRIVER_VERSION); 2226 return buf; 2227} 2228#ifdef CONFIG_SCSI_ARCMSR_AER 2229static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev) 2230{ 2231 struct Scsi_Host *host = pci_get_drvdata(pdev); 2232 struct AdapterControlBlock *acb = 2233 (struct AdapterControlBlock *) host->hostdata; 2234 uint32_t intmask_org; 2235 int i, j; 2236 2237 if (pci_enable_device(pdev)) { 2238 return PCI_ERS_RESULT_DISCONNECT; 2239 } 2240 pci_set_master(pdev); 2241 intmask_org = arcmsr_disable_outbound_ints(acb); 2242 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 2243 ACB_F_MESSAGE_RQBUFFER_CLEARED | 2244 ACB_F_MESSAGE_WQBUFFER_READED); 2245 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 2246 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 2247 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 2248 acb->devstate[i][j] = ARECA_RAID_GONE; 2249 2250 arcmsr_wait_firmware_ready(acb); 2251 arcmsr_iop_confirm(acb); 2252 /* disable all outbound interrupt */ 2253 arcmsr_get_firmware_spec(acb); 2254 /*start background rebuild*/ 2255 arcmsr_start_adapter_bgrb(acb); 2256 /* empty doorbell Qbuffer if door bell ringed */ 2257 arcmsr_clear_doorbell_queue_buffer(acb); 2258 /* enable outbound Post Queue,outbound doorbell Interrupt */ 2259 arcmsr_enable_outbound_ints(acb, intmask_org); 2260 acb->acb_flags |= ACB_F_IOP_INITED; 2261 2262 pci_enable_pcie_error_reporting(pdev); 2263 return PCI_ERS_RESULT_RECOVERED; 2264} 2265 2266static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev) 2267{ 2268 struct Scsi_Host *host = pci_get_drvdata(pdev); 2269 struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata; 2270 struct CommandControlBlock *ccb; 2271 uint32_t intmask_org; 2272 int i = 0; 2273 2274 if (atomic_read(&acb->ccboutstandingcount) != 0) { 2275 /* talk to iop 331 outstanding command aborted */ 2276 arcmsr_abort_allcmd(acb); 2277 /* wait for 3 sec for all command aborted*/ 2278 ssleep(3); 2279 /* disable all outbound interrupt */ 2280 intmask_org = arcmsr_disable_outbound_ints(acb); 2281 /* clear all outbound posted Q */ 2282 arcmsr_done4abort_postqueue(acb); 2283 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2284 ccb = acb->pccb_pool[i]; 2285 if (ccb->startdone == ARCMSR_CCB_START) { 2286 ccb->startdone = ARCMSR_CCB_ABORTED; 2287 arcmsr_ccb_complete(ccb, 1); 2288 } 2289 } 2290 /* enable all outbound interrupt */ 2291 arcmsr_enable_outbound_ints(acb, intmask_org); 2292 } 2293 pci_disable_device(pdev); 2294} 2295 2296static void arcmsr_pci_ers_disconnect_forepart(struct pci_dev *pdev) 2297{ 2298 struct Scsi_Host *host = pci_get_drvdata(pdev); 2299 struct AdapterControlBlock *acb = \ 2300 (struct AdapterControlBlock *)host->hostdata; 2301 2302 arcmsr_stop_adapter_bgrb(acb); 2303 arcmsr_flush_adapter_cache(acb); 2304} 2305 2306static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 2307 pci_channel_state_t state) 2308{ 2309 switch (state) { 2310 case pci_channel_io_frozen: 2311 arcmsr_pci_ers_need_reset_forepart(pdev); 2312 return PCI_ERS_RESULT_NEED_RESET; 2313 case pci_channel_io_perm_failure: 2314 arcmsr_pci_ers_disconnect_forepart(pdev); 2315 return PCI_ERS_RESULT_DISCONNECT; 2316 break; 2317 default: 2318 return PCI_ERS_RESULT_NEED_RESET; 2319 } 2320} 2321#endif 2322