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