arcmsr_hba.c revision 284901a90a9e0b812ca3f5f852cbbfb60d10249d
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 .shost_attrs = arcmsr_host_attrs, 126}; 127#ifdef CONFIG_SCSI_ARCMSR_AER 128static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev); 129static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 130 pci_channel_state_t state); 131 132static struct pci_error_handlers arcmsr_pci_error_handlers = { 133 .error_detected = arcmsr_pci_error_detected, 134 .slot_reset = arcmsr_pci_slot_reset, 135}; 136#endif 137static struct pci_device_id arcmsr_device_id_table[] = { 138 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)}, 139 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)}, 140 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)}, 141 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)}, 142 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)}, 143 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)}, 144 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)}, 145 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)}, 146 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)}, 147 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)}, 148 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)}, 149 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)}, 150 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)}, 151 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)}, 152 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)}, 153 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)}, 154 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)}, 155 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)}, 156 {0, 0}, /* Terminating entry */ 157}; 158MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table); 159static struct pci_driver arcmsr_pci_driver = { 160 .name = "arcmsr", 161 .id_table = arcmsr_device_id_table, 162 .probe = arcmsr_probe, 163 .remove = arcmsr_remove, 164 .shutdown = arcmsr_shutdown, 165 #ifdef CONFIG_SCSI_ARCMSR_AER 166 .err_handler = &arcmsr_pci_error_handlers, 167 #endif 168}; 169 170static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id) 171{ 172 irqreturn_t handle_state; 173 struct AdapterControlBlock *acb = dev_id; 174 175 spin_lock(acb->host->host_lock); 176 handle_state = arcmsr_interrupt(acb); 177 spin_unlock(acb->host->host_lock); 178 179 return handle_state; 180} 181 182static int arcmsr_bios_param(struct scsi_device *sdev, 183 struct block_device *bdev, sector_t capacity, int *geom) 184{ 185 int ret, heads, sectors, cylinders, total_capacity; 186 unsigned char *buffer;/* return copy of block device's partition table */ 187 188 buffer = scsi_bios_ptable(bdev); 189 if (buffer) { 190 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]); 191 kfree(buffer); 192 if (ret != -1) 193 return ret; 194 } 195 total_capacity = capacity; 196 heads = 64; 197 sectors = 32; 198 cylinders = total_capacity / (heads * sectors); 199 if (cylinders > 1024) { 200 heads = 255; 201 sectors = 63; 202 cylinders = total_capacity / (heads * sectors); 203 } 204 geom[0] = heads; 205 geom[1] = sectors; 206 geom[2] = cylinders; 207 return 0; 208} 209 210static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb) 211{ 212 struct pci_dev *pdev = acb->pdev; 213 u16 dev_id; 214 pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id); 215 switch (dev_id) { 216 case 0x1201 : { 217 acb->adapter_type = ACB_ADAPTER_TYPE_B; 218 } 219 break; 220 221 default : acb->adapter_type = ACB_ADAPTER_TYPE_A; 222 } 223} 224 225static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb) 226{ 227 228 switch (acb->adapter_type) { 229 230 case ACB_ADAPTER_TYPE_A: { 231 struct pci_dev *pdev = acb->pdev; 232 void *dma_coherent; 233 dma_addr_t dma_coherent_handle, dma_addr; 234 struct CommandControlBlock *ccb_tmp; 235 uint32_t intmask_org; 236 int i, j; 237 238 acb->pmuA = pci_ioremap_bar(pdev, 0); 239 if (!acb->pmuA) { 240 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", 241 acb->host->host_no); 242 return -ENOMEM; 243 } 244 245 dma_coherent = dma_alloc_coherent(&pdev->dev, 246 ARCMSR_MAX_FREECCB_NUM * 247 sizeof (struct CommandControlBlock) + 0x20, 248 &dma_coherent_handle, GFP_KERNEL); 249 250 if (!dma_coherent) { 251 iounmap(acb->pmuA); 252 return -ENOMEM; 253 } 254 255 acb->dma_coherent = dma_coherent; 256 acb->dma_coherent_handle = dma_coherent_handle; 257 258 if (((unsigned long)dma_coherent & 0x1F)) { 259 dma_coherent = dma_coherent + 260 (0x20 - ((unsigned long)dma_coherent & 0x1F)); 261 dma_coherent_handle = dma_coherent_handle + 262 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); 263 } 264 265 dma_addr = dma_coherent_handle; 266 ccb_tmp = (struct CommandControlBlock *)dma_coherent; 267 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 268 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; 269 ccb_tmp->acb = acb; 270 acb->pccb_pool[i] = ccb_tmp; 271 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); 272 dma_addr = dma_addr + sizeof(struct CommandControlBlock); 273 ccb_tmp++; 274 } 275 276 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; 277 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 278 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 279 acb->devstate[i][j] = ARECA_RAID_GONE; 280 281 /* 282 ** here we need to tell iop 331 our ccb_tmp.HighPart 283 ** if ccb_tmp.HighPart is not zero 284 */ 285 intmask_org = arcmsr_disable_outbound_ints(acb); 286 } 287 break; 288 289 case ACB_ADAPTER_TYPE_B: { 290 291 struct pci_dev *pdev = acb->pdev; 292 struct MessageUnit_B *reg; 293 void __iomem *mem_base0, *mem_base1; 294 void *dma_coherent; 295 dma_addr_t dma_coherent_handle, dma_addr; 296 uint32_t intmask_org; 297 struct CommandControlBlock *ccb_tmp; 298 int i, j; 299 300 dma_coherent = dma_alloc_coherent(&pdev->dev, 301 ((ARCMSR_MAX_FREECCB_NUM * 302 sizeof(struct CommandControlBlock) + 0x20) + 303 sizeof(struct MessageUnit_B)), 304 &dma_coherent_handle, GFP_KERNEL); 305 if (!dma_coherent) 306 return -ENOMEM; 307 308 acb->dma_coherent = dma_coherent; 309 acb->dma_coherent_handle = dma_coherent_handle; 310 311 if (((unsigned long)dma_coherent & 0x1F)) { 312 dma_coherent = dma_coherent + 313 (0x20 - ((unsigned long)dma_coherent & 0x1F)); 314 dma_coherent_handle = dma_coherent_handle + 315 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); 316 } 317 318 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->pmuB = reg; 332 mem_base0 = pci_ioremap_bar(pdev, 0); 333 if (!mem_base0) 334 goto out; 335 336 mem_base1 = pci_ioremap_bar(pdev, 2); 337 if (!mem_base1) { 338 iounmap(mem_base0); 339 goto out; 340 } 341 342 reg->drv2iop_doorbell_reg = mem_base0 + ARCMSR_DRV2IOP_DOORBELL; 343 reg->drv2iop_doorbell_mask_reg = mem_base0 + 344 ARCMSR_DRV2IOP_DOORBELL_MASK; 345 reg->iop2drv_doorbell_reg = mem_base0 + ARCMSR_IOP2DRV_DOORBELL; 346 reg->iop2drv_doorbell_mask_reg = mem_base0 + 347 ARCMSR_IOP2DRV_DOORBELL_MASK; 348 reg->ioctl_wbuffer_reg = mem_base1 + ARCMSR_IOCTL_WBUFFER; 349 reg->ioctl_rbuffer_reg = mem_base1 + ARCMSR_IOCTL_RBUFFER; 350 reg->msgcode_rwbuffer_reg = mem_base1 + ARCMSR_MSGCODE_RWBUFFER; 351 352 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; 353 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 354 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 355 acb->devstate[i][j] = ARECA_RAID_GOOD; 356 357 /* 358 ** here we need to tell iop 331 our ccb_tmp.HighPart 359 ** if ccb_tmp.HighPart is not zero 360 */ 361 intmask_org = arcmsr_disable_outbound_ints(acb); 362 } 363 break; 364 } 365 return 0; 366 367out: 368 dma_free_coherent(&acb->pdev->dev, 369 (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 + 370 sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle); 371 return -ENOMEM; 372} 373 374static int arcmsr_probe(struct pci_dev *pdev, 375 const struct pci_device_id *id) 376{ 377 struct Scsi_Host *host; 378 struct AdapterControlBlock *acb; 379 uint8_t bus, dev_fun; 380 int error; 381 382 error = pci_enable_device(pdev); 383 if (error) 384 goto out; 385 pci_set_master(pdev); 386 387 host = scsi_host_alloc(&arcmsr_scsi_host_template, 388 sizeof(struct AdapterControlBlock)); 389 if (!host) { 390 error = -ENOMEM; 391 goto out_disable_device; 392 } 393 acb = (struct AdapterControlBlock *)host->hostdata; 394 memset(acb, 0, sizeof (struct AdapterControlBlock)); 395 396 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 397 if (error) { 398 error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 399 if (error) { 400 printk(KERN_WARNING 401 "scsi%d: No suitable DMA mask available\n", 402 host->host_no); 403 goto out_host_put; 404 } 405 } 406 bus = pdev->bus->number; 407 dev_fun = pdev->devfn; 408 acb->host = host; 409 acb->pdev = pdev; 410 host->max_sectors = ARCMSR_MAX_XFER_SECTORS; 411 host->max_lun = ARCMSR_MAX_TARGETLUN; 412 host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/ 413 host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/ 414 host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES; 415 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */ 416 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN; 417 host->this_id = ARCMSR_SCSI_INITIATOR_ID; 418 host->unique_id = (bus << 8) | dev_fun; 419 host->irq = pdev->irq; 420 error = pci_request_regions(pdev, "arcmsr"); 421 if (error) { 422 goto out_host_put; 423 } 424 arcmsr_define_adapter_type(acb); 425 426 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 427 ACB_F_MESSAGE_RQBUFFER_CLEARED | 428 ACB_F_MESSAGE_WQBUFFER_READED); 429 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 430 INIT_LIST_HEAD(&acb->ccb_free_list); 431 432 error = arcmsr_alloc_ccb_pool(acb); 433 if (error) 434 goto out_release_regions; 435 436 error = request_irq(pdev->irq, arcmsr_do_interrupt, 437 IRQF_SHARED, "arcmsr", acb); 438 if (error) 439 goto out_free_ccb_pool; 440 441 arcmsr_iop_init(acb); 442 pci_set_drvdata(pdev, host); 443 if (strncmp(acb->firm_version, "V1.42", 5) >= 0) 444 host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B; 445 446 error = scsi_add_host(host, &pdev->dev); 447 if (error) 448 goto out_free_irq; 449 450 error = arcmsr_alloc_sysfs_attr(acb); 451 if (error) 452 goto out_free_sysfs; 453 454 scsi_scan_host(host); 455 #ifdef CONFIG_SCSI_ARCMSR_AER 456 pci_enable_pcie_error_reporting(pdev); 457 #endif 458 return 0; 459 out_free_sysfs: 460 out_free_irq: 461 free_irq(pdev->irq, acb); 462 out_free_ccb_pool: 463 arcmsr_free_ccb_pool(acb); 464 out_release_regions: 465 pci_release_regions(pdev); 466 out_host_put: 467 scsi_host_put(host); 468 out_disable_device: 469 pci_disable_device(pdev); 470 out: 471 return error; 472} 473 474static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb) 475{ 476 struct MessageUnit_A __iomem *reg = acb->pmuA; 477 uint32_t Index; 478 uint8_t Retries = 0x00; 479 480 do { 481 for (Index = 0; Index < 100; Index++) { 482 if (readl(®->outbound_intstatus) & 483 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) { 484 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, 485 ®->outbound_intstatus); 486 return 0x00; 487 } 488 msleep(10); 489 }/*max 1 seconds*/ 490 491 } while (Retries++ < 20);/*max 20 sec*/ 492 return 0xff; 493} 494 495static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb) 496{ 497 struct MessageUnit_B *reg = acb->pmuB; 498 uint32_t Index; 499 uint8_t Retries = 0x00; 500 501 do { 502 for (Index = 0; Index < 100; Index++) { 503 if (readl(reg->iop2drv_doorbell_reg) 504 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) { 505 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN 506 , reg->iop2drv_doorbell_reg); 507 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg); 508 return 0x00; 509 } 510 msleep(10); 511 }/*max 1 seconds*/ 512 513 } while (Retries++ < 20);/*max 20 sec*/ 514 return 0xff; 515} 516 517static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb) 518{ 519 struct MessageUnit_A __iomem *reg = acb->pmuA; 520 521 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0); 522 if (arcmsr_hba_wait_msgint_ready(acb)) 523 printk(KERN_NOTICE 524 "arcmsr%d: wait 'abort all outstanding command' timeout \n" 525 , acb->host->host_no); 526} 527 528static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb) 529{ 530 struct MessageUnit_B *reg = acb->pmuB; 531 532 writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg); 533 if (arcmsr_hbb_wait_msgint_ready(acb)) 534 printk(KERN_NOTICE 535 "arcmsr%d: wait 'abort all outstanding command' timeout \n" 536 , acb->host->host_no); 537} 538 539static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb) 540{ 541 switch (acb->adapter_type) { 542 case ACB_ADAPTER_TYPE_A: { 543 arcmsr_abort_hba_allcmd(acb); 544 } 545 break; 546 547 case ACB_ADAPTER_TYPE_B: { 548 arcmsr_abort_hbb_allcmd(acb); 549 } 550 } 551} 552 553static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb) 554{ 555 struct scsi_cmnd *pcmd = ccb->pcmd; 556 557 scsi_dma_unmap(pcmd); 558} 559 560static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag) 561{ 562 struct AdapterControlBlock *acb = ccb->acb; 563 struct scsi_cmnd *pcmd = ccb->pcmd; 564 565 arcmsr_pci_unmap_dma(ccb); 566 if (stand_flag == 1) 567 atomic_dec(&acb->ccboutstandingcount); 568 ccb->startdone = ARCMSR_CCB_DONE; 569 ccb->ccb_flags = 0; 570 list_add_tail(&ccb->list, &acb->ccb_free_list); 571 pcmd->scsi_done(pcmd); 572} 573 574static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb) 575{ 576 struct MessageUnit_A __iomem *reg = acb->pmuA; 577 int retry_count = 30; 578 579 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0); 580 do { 581 if (!arcmsr_hba_wait_msgint_ready(acb)) 582 break; 583 else { 584 retry_count--; 585 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ 586 timeout, retry count down = %d \n", acb->host->host_no, retry_count); 587 } 588 } while (retry_count != 0); 589} 590 591static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb) 592{ 593 struct MessageUnit_B *reg = acb->pmuB; 594 int retry_count = 30; 595 596 writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg); 597 do { 598 if (!arcmsr_hbb_wait_msgint_ready(acb)) 599 break; 600 else { 601 retry_count--; 602 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ 603 timeout,retry count down = %d \n", acb->host->host_no, retry_count); 604 } 605 } while (retry_count != 0); 606} 607 608static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb) 609{ 610 switch (acb->adapter_type) { 611 612 case ACB_ADAPTER_TYPE_A: { 613 arcmsr_flush_hba_cache(acb); 614 } 615 break; 616 617 case ACB_ADAPTER_TYPE_B: { 618 arcmsr_flush_hbb_cache(acb); 619 } 620 } 621} 622 623static void arcmsr_report_sense_info(struct CommandControlBlock *ccb) 624{ 625 626 struct scsi_cmnd *pcmd = ccb->pcmd; 627 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer; 628 629 pcmd->result = DID_OK << 16; 630 if (sensebuffer) { 631 int sense_data_length = 632 sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE 633 ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE; 634 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE); 635 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length); 636 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS; 637 sensebuffer->Valid = 1; 638 } 639} 640 641static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb) 642{ 643 u32 orig_mask = 0; 644 switch (acb->adapter_type) { 645 646 case ACB_ADAPTER_TYPE_A : { 647 struct MessageUnit_A __iomem *reg = acb->pmuA; 648 orig_mask = readl(®->outbound_intmask)|\ 649 ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE; 650 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \ 651 ®->outbound_intmask); 652 } 653 break; 654 655 case ACB_ADAPTER_TYPE_B : { 656 struct MessageUnit_B *reg = acb->pmuB; 657 orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \ 658 (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE); 659 writel(0, reg->iop2drv_doorbell_mask_reg); 660 } 661 break; 662 } 663 return orig_mask; 664} 665 666static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \ 667 struct CommandControlBlock *ccb, uint32_t flag_ccb) 668{ 669 670 uint8_t id, lun; 671 id = ccb->pcmd->device->id; 672 lun = ccb->pcmd->device->lun; 673 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) { 674 if (acb->devstate[id][lun] == ARECA_RAID_GONE) 675 acb->devstate[id][lun] = ARECA_RAID_GOOD; 676 ccb->pcmd->result = DID_OK << 16; 677 arcmsr_ccb_complete(ccb, 1); 678 } else { 679 switch (ccb->arcmsr_cdb.DeviceStatus) { 680 case ARCMSR_DEV_SELECT_TIMEOUT: { 681 acb->devstate[id][lun] = ARECA_RAID_GONE; 682 ccb->pcmd->result = DID_NO_CONNECT << 16; 683 arcmsr_ccb_complete(ccb, 1); 684 } 685 break; 686 687 case ARCMSR_DEV_ABORTED: 688 689 case ARCMSR_DEV_INIT_FAIL: { 690 acb->devstate[id][lun] = ARECA_RAID_GONE; 691 ccb->pcmd->result = DID_BAD_TARGET << 16; 692 arcmsr_ccb_complete(ccb, 1); 693 } 694 break; 695 696 case ARCMSR_DEV_CHECK_CONDITION: { 697 acb->devstate[id][lun] = ARECA_RAID_GOOD; 698 arcmsr_report_sense_info(ccb); 699 arcmsr_ccb_complete(ccb, 1); 700 } 701 break; 702 703 default: 704 printk(KERN_NOTICE 705 "arcmsr%d: scsi id = %d lun = %d" 706 " isr get command error done, " 707 "but got unknown DeviceStatus = 0x%x \n" 708 , acb->host->host_no 709 , id 710 , lun 711 , ccb->arcmsr_cdb.DeviceStatus); 712 acb->devstate[id][lun] = ARECA_RAID_GONE; 713 ccb->pcmd->result = DID_NO_CONNECT << 16; 714 arcmsr_ccb_complete(ccb, 1); 715 break; 716 } 717 } 718} 719 720static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb) 721 722{ 723 struct CommandControlBlock *ccb; 724 725 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); 726 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 727 if (ccb->startdone == ARCMSR_CCB_ABORTED) { 728 struct scsi_cmnd *abortcmd = ccb->pcmd; 729 if (abortcmd) { 730 abortcmd->result |= DID_ABORT << 16; 731 arcmsr_ccb_complete(ccb, 1); 732 printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \ 733 isr got aborted command \n", acb->host->host_no, ccb); 734 } 735 } 736 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \ 737 done acb = '0x%p'" 738 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x" 739 " ccboutstandingcount = %d \n" 740 , acb->host->host_no 741 , acb 742 , ccb 743 , ccb->acb 744 , ccb->startdone 745 , atomic_read(&acb->ccboutstandingcount)); 746 } 747 else 748 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 749} 750 751static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb) 752{ 753 int i = 0; 754 uint32_t flag_ccb; 755 756 switch (acb->adapter_type) { 757 758 case ACB_ADAPTER_TYPE_A: { 759 struct MessageUnit_A __iomem *reg = acb->pmuA; 760 uint32_t outbound_intstatus; 761 outbound_intstatus = readl(®->outbound_intstatus) & 762 acb->outbound_int_enable; 763 /*clear and abort all outbound posted Q*/ 764 writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ 765 while (((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) 766 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) { 767 arcmsr_drain_donequeue(acb, flag_ccb); 768 } 769 } 770 break; 771 772 case ACB_ADAPTER_TYPE_B: { 773 struct MessageUnit_B *reg = acb->pmuB; 774 /*clear all outbound posted Q*/ 775 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) { 776 if ((flag_ccb = readl(®->done_qbuffer[i])) != 0) { 777 writel(0, ®->done_qbuffer[i]); 778 arcmsr_drain_donequeue(acb, flag_ccb); 779 } 780 writel(0, ®->post_qbuffer[i]); 781 } 782 reg->doneq_index = 0; 783 reg->postq_index = 0; 784 } 785 break; 786 } 787} 788static void arcmsr_remove(struct pci_dev *pdev) 789{ 790 struct Scsi_Host *host = pci_get_drvdata(pdev); 791 struct AdapterControlBlock *acb = 792 (struct AdapterControlBlock *) host->hostdata; 793 int poll_count = 0; 794 795 arcmsr_free_sysfs_attr(acb); 796 scsi_remove_host(host); 797 arcmsr_stop_adapter_bgrb(acb); 798 arcmsr_flush_adapter_cache(acb); 799 arcmsr_disable_outbound_ints(acb); 800 acb->acb_flags |= ACB_F_SCSISTOPADAPTER; 801 acb->acb_flags &= ~ACB_F_IOP_INITED; 802 803 for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) { 804 if (!atomic_read(&acb->ccboutstandingcount)) 805 break; 806 arcmsr_interrupt(acb);/* FIXME: need spinlock */ 807 msleep(25); 808 } 809 810 if (atomic_read(&acb->ccboutstandingcount)) { 811 int i; 812 813 arcmsr_abort_allcmd(acb); 814 arcmsr_done4abort_postqueue(acb); 815 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 816 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 817 if (ccb->startdone == ARCMSR_CCB_START) { 818 ccb->startdone = ARCMSR_CCB_ABORTED; 819 ccb->pcmd->result = DID_ABORT << 16; 820 arcmsr_ccb_complete(ccb, 1); 821 } 822 } 823 } 824 825 free_irq(pdev->irq, acb); 826 arcmsr_free_ccb_pool(acb); 827 pci_release_regions(pdev); 828 829 scsi_host_put(host); 830 831 pci_disable_device(pdev); 832 pci_set_drvdata(pdev, NULL); 833} 834 835static void arcmsr_shutdown(struct pci_dev *pdev) 836{ 837 struct Scsi_Host *host = pci_get_drvdata(pdev); 838 struct AdapterControlBlock *acb = 839 (struct AdapterControlBlock *)host->hostdata; 840 841 arcmsr_stop_adapter_bgrb(acb); 842 arcmsr_flush_adapter_cache(acb); 843} 844 845static int arcmsr_module_init(void) 846{ 847 int error = 0; 848 849 error = pci_register_driver(&arcmsr_pci_driver); 850 return error; 851} 852 853static void arcmsr_module_exit(void) 854{ 855 pci_unregister_driver(&arcmsr_pci_driver); 856} 857module_init(arcmsr_module_init); 858module_exit(arcmsr_module_exit); 859 860static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \ 861 u32 intmask_org) 862{ 863 u32 mask; 864 865 switch (acb->adapter_type) { 866 867 case ACB_ADAPTER_TYPE_A : { 868 struct MessageUnit_A __iomem *reg = acb->pmuA; 869 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE | 870 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE); 871 writel(mask, ®->outbound_intmask); 872 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff; 873 } 874 break; 875 876 case ACB_ADAPTER_TYPE_B : { 877 struct MessageUnit_B *reg = acb->pmuB; 878 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \ 879 ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE); 880 writel(mask, reg->iop2drv_doorbell_mask_reg); 881 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f; 882 } 883 } 884} 885 886static int arcmsr_build_ccb(struct AdapterControlBlock *acb, 887 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd) 888{ 889 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 890 int8_t *psge = (int8_t *)&arcmsr_cdb->u; 891 __le32 address_lo, address_hi; 892 int arccdbsize = 0x30; 893 int nseg; 894 895 ccb->pcmd = pcmd; 896 memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB)); 897 arcmsr_cdb->Bus = 0; 898 arcmsr_cdb->TargetID = pcmd->device->id; 899 arcmsr_cdb->LUN = pcmd->device->lun; 900 arcmsr_cdb->Function = 1; 901 arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len; 902 arcmsr_cdb->Context = (unsigned long)arcmsr_cdb; 903 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len); 904 905 nseg = scsi_dma_map(pcmd); 906 if (nseg > ARCMSR_MAX_SG_ENTRIES) 907 return FAILED; 908 BUG_ON(nseg < 0); 909 910 if (nseg) { 911 __le32 length; 912 int i, cdb_sgcount = 0; 913 struct scatterlist *sg; 914 915 /* map stor port SG list to our iop SG List. */ 916 scsi_for_each_sg(pcmd, sg, nseg, i) { 917 /* Get the physical address of the current data pointer */ 918 length = cpu_to_le32(sg_dma_len(sg)); 919 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg))); 920 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg))); 921 if (address_hi == 0) { 922 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge; 923 924 pdma_sg->address = address_lo; 925 pdma_sg->length = length; 926 psge += sizeof (struct SG32ENTRY); 927 arccdbsize += sizeof (struct SG32ENTRY); 928 } else { 929 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge; 930 931 pdma_sg->addresshigh = address_hi; 932 pdma_sg->address = address_lo; 933 pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR); 934 psge += sizeof (struct SG64ENTRY); 935 arccdbsize += sizeof (struct SG64ENTRY); 936 } 937 cdb_sgcount++; 938 } 939 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount; 940 arcmsr_cdb->DataLength = scsi_bufflen(pcmd); 941 if ( arccdbsize > 256) 942 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE; 943 } 944 if (pcmd->sc_data_direction == DMA_TO_DEVICE ) { 945 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE; 946 ccb->ccb_flags |= CCB_FLAG_WRITE; 947 } 948 return SUCCESS; 949} 950 951static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb) 952{ 953 uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr; 954 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 955 atomic_inc(&acb->ccboutstandingcount); 956 ccb->startdone = ARCMSR_CCB_START; 957 958 switch (acb->adapter_type) { 959 case ACB_ADAPTER_TYPE_A: { 960 struct MessageUnit_A __iomem *reg = acb->pmuA; 961 962 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) 963 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE, 964 ®->inbound_queueport); 965 else { 966 writel(cdb_shifted_phyaddr, ®->inbound_queueport); 967 } 968 } 969 break; 970 971 case ACB_ADAPTER_TYPE_B: { 972 struct MessageUnit_B *reg = acb->pmuB; 973 uint32_t ending_index, index = reg->postq_index; 974 975 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE); 976 writel(0, ®->post_qbuffer[ending_index]); 977 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) { 978 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\ 979 ®->post_qbuffer[index]); 980 } 981 else { 982 writel(cdb_shifted_phyaddr, ®->post_qbuffer[index]); 983 } 984 index++; 985 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */ 986 reg->postq_index = index; 987 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell_reg); 988 } 989 break; 990 } 991} 992 993static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb) 994{ 995 struct MessageUnit_A __iomem *reg = acb->pmuA; 996 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 997 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, ®->inbound_msgaddr0); 998 999 if (arcmsr_hba_wait_msgint_ready(acb)) { 1000 printk(KERN_NOTICE 1001 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" 1002 , acb->host->host_no); 1003 } 1004} 1005 1006static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb) 1007{ 1008 struct MessageUnit_B *reg = acb->pmuB; 1009 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 1010 writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg); 1011 1012 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1013 printk(KERN_NOTICE 1014 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" 1015 , acb->host->host_no); 1016 } 1017} 1018 1019static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb) 1020{ 1021 switch (acb->adapter_type) { 1022 case ACB_ADAPTER_TYPE_A: { 1023 arcmsr_stop_hba_bgrb(acb); 1024 } 1025 break; 1026 1027 case ACB_ADAPTER_TYPE_B: { 1028 arcmsr_stop_hbb_bgrb(acb); 1029 } 1030 break; 1031 } 1032} 1033 1034static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb) 1035{ 1036 switch (acb->adapter_type) { 1037 case ACB_ADAPTER_TYPE_A: { 1038 iounmap(acb->pmuA); 1039 dma_free_coherent(&acb->pdev->dev, 1040 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20, 1041 acb->dma_coherent, 1042 acb->dma_coherent_handle); 1043 break; 1044 } 1045 case ACB_ADAPTER_TYPE_B: { 1046 struct MessageUnit_B *reg = acb->pmuB; 1047 iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL); 1048 iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER); 1049 dma_free_coherent(&acb->pdev->dev, 1050 (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 + 1051 sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle); 1052 } 1053 } 1054 1055} 1056 1057void arcmsr_iop_message_read(struct AdapterControlBlock *acb) 1058{ 1059 switch (acb->adapter_type) { 1060 case ACB_ADAPTER_TYPE_A: { 1061 struct MessageUnit_A __iomem *reg = acb->pmuA; 1062 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); 1063 } 1064 break; 1065 1066 case ACB_ADAPTER_TYPE_B: { 1067 struct MessageUnit_B *reg = acb->pmuB; 1068 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); 1069 } 1070 break; 1071 } 1072} 1073 1074static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb) 1075{ 1076 switch (acb->adapter_type) { 1077 case ACB_ADAPTER_TYPE_A: { 1078 struct MessageUnit_A __iomem *reg = acb->pmuA; 1079 /* 1080 ** push inbound doorbell tell iop, driver data write ok 1081 ** and wait reply on next hwinterrupt for next Qbuffer post 1082 */ 1083 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, ®->inbound_doorbell); 1084 } 1085 break; 1086 1087 case ACB_ADAPTER_TYPE_B: { 1088 struct MessageUnit_B *reg = acb->pmuB; 1089 /* 1090 ** push inbound doorbell tell iop, driver data write ok 1091 ** and wait reply on next hwinterrupt for next Qbuffer post 1092 */ 1093 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell_reg); 1094 } 1095 break; 1096 } 1097} 1098 1099struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb) 1100{ 1101 struct QBUFFER __iomem *qbuffer = NULL; 1102 1103 switch (acb->adapter_type) { 1104 1105 case ACB_ADAPTER_TYPE_A: { 1106 struct MessageUnit_A __iomem *reg = acb->pmuA; 1107 qbuffer = (struct QBUFFER __iomem *)®->message_rbuffer; 1108 } 1109 break; 1110 1111 case ACB_ADAPTER_TYPE_B: { 1112 struct MessageUnit_B *reg = acb->pmuB; 1113 qbuffer = (struct QBUFFER __iomem *)reg->ioctl_rbuffer_reg; 1114 } 1115 break; 1116 } 1117 return qbuffer; 1118} 1119 1120static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb) 1121{ 1122 struct QBUFFER __iomem *pqbuffer = NULL; 1123 1124 switch (acb->adapter_type) { 1125 1126 case ACB_ADAPTER_TYPE_A: { 1127 struct MessageUnit_A __iomem *reg = acb->pmuA; 1128 pqbuffer = (struct QBUFFER __iomem *) ®->message_wbuffer; 1129 } 1130 break; 1131 1132 case ACB_ADAPTER_TYPE_B: { 1133 struct MessageUnit_B *reg = acb->pmuB; 1134 pqbuffer = (struct QBUFFER __iomem *)reg->ioctl_wbuffer_reg; 1135 } 1136 break; 1137 } 1138 return pqbuffer; 1139} 1140 1141static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb) 1142{ 1143 struct QBUFFER __iomem *prbuffer; 1144 struct QBUFFER *pQbuffer; 1145 uint8_t __iomem *iop_data; 1146 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex; 1147 1148 rqbuf_lastindex = acb->rqbuf_lastindex; 1149 rqbuf_firstindex = acb->rqbuf_firstindex; 1150 prbuffer = arcmsr_get_iop_rqbuffer(acb); 1151 iop_data = (uint8_t __iomem *)prbuffer->data; 1152 iop_len = prbuffer->data_len; 1153 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex -1)&(ARCMSR_MAX_QBUFFER -1); 1154 1155 if (my_empty_len >= iop_len) 1156 { 1157 while (iop_len > 0) { 1158 pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex]; 1159 memcpy(pQbuffer, iop_data,1); 1160 rqbuf_lastindex++; 1161 rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1162 iop_data++; 1163 iop_len--; 1164 } 1165 acb->rqbuf_lastindex = rqbuf_lastindex; 1166 arcmsr_iop_message_read(acb); 1167 } 1168 1169 else { 1170 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW; 1171 } 1172} 1173 1174static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb) 1175{ 1176 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED; 1177 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) { 1178 uint8_t *pQbuffer; 1179 struct QBUFFER __iomem *pwbuffer; 1180 uint8_t __iomem *iop_data; 1181 int32_t allxfer_len = 0; 1182 1183 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 1184 pwbuffer = arcmsr_get_iop_wqbuffer(acb); 1185 iop_data = (uint8_t __iomem *)pwbuffer->data; 1186 1187 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \ 1188 (allxfer_len < 124)) { 1189 pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex]; 1190 memcpy(iop_data, pQbuffer, 1); 1191 acb->wqbuf_firstindex++; 1192 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1193 iop_data++; 1194 allxfer_len++; 1195 } 1196 pwbuffer->data_len = allxfer_len; 1197 1198 arcmsr_iop_message_wrote(acb); 1199 } 1200 1201 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) { 1202 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED; 1203 } 1204} 1205 1206static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb) 1207{ 1208 uint32_t outbound_doorbell; 1209 struct MessageUnit_A __iomem *reg = acb->pmuA; 1210 1211 outbound_doorbell = readl(®->outbound_doorbell); 1212 writel(outbound_doorbell, ®->outbound_doorbell); 1213 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) { 1214 arcmsr_iop2drv_data_wrote_handle(acb); 1215 } 1216 1217 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) { 1218 arcmsr_iop2drv_data_read_handle(acb); 1219 } 1220} 1221 1222static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb) 1223{ 1224 uint32_t flag_ccb; 1225 struct MessageUnit_A __iomem *reg = acb->pmuA; 1226 1227 while ((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) { 1228 arcmsr_drain_donequeue(acb, flag_ccb); 1229 } 1230} 1231 1232static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb) 1233{ 1234 uint32_t index; 1235 uint32_t flag_ccb; 1236 struct MessageUnit_B *reg = acb->pmuB; 1237 1238 index = reg->doneq_index; 1239 1240 while ((flag_ccb = readl(®->done_qbuffer[index])) != 0) { 1241 writel(0, ®->done_qbuffer[index]); 1242 arcmsr_drain_donequeue(acb, flag_ccb); 1243 index++; 1244 index %= ARCMSR_MAX_HBB_POSTQUEUE; 1245 reg->doneq_index = index; 1246 } 1247} 1248 1249static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb) 1250{ 1251 uint32_t outbound_intstatus; 1252 struct MessageUnit_A __iomem *reg = acb->pmuA; 1253 1254 outbound_intstatus = readl(®->outbound_intstatus) & \ 1255 acb->outbound_int_enable; 1256 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) { 1257 return 1; 1258 } 1259 writel(outbound_intstatus, ®->outbound_intstatus); 1260 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) { 1261 arcmsr_hba_doorbell_isr(acb); 1262 } 1263 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) { 1264 arcmsr_hba_postqueue_isr(acb); 1265 } 1266 return 0; 1267} 1268 1269static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb) 1270{ 1271 uint32_t outbound_doorbell; 1272 struct MessageUnit_B *reg = acb->pmuB; 1273 1274 outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \ 1275 acb->outbound_int_enable; 1276 if (!outbound_doorbell) 1277 return 1; 1278 1279 writel(~outbound_doorbell, reg->iop2drv_doorbell_reg); 1280 /*in case the last action of doorbell interrupt clearance is cached, this action can push HW to write down the clear bit*/ 1281 readl(reg->iop2drv_doorbell_reg); 1282 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg); 1283 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) { 1284 arcmsr_iop2drv_data_wrote_handle(acb); 1285 } 1286 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) { 1287 arcmsr_iop2drv_data_read_handle(acb); 1288 } 1289 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) { 1290 arcmsr_hbb_postqueue_isr(acb); 1291 } 1292 1293 return 0; 1294} 1295 1296static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb) 1297{ 1298 switch (acb->adapter_type) { 1299 case ACB_ADAPTER_TYPE_A: { 1300 if (arcmsr_handle_hba_isr(acb)) { 1301 return IRQ_NONE; 1302 } 1303 } 1304 break; 1305 1306 case ACB_ADAPTER_TYPE_B: { 1307 if (arcmsr_handle_hbb_isr(acb)) { 1308 return IRQ_NONE; 1309 } 1310 } 1311 break; 1312 } 1313 return IRQ_HANDLED; 1314} 1315 1316static void arcmsr_iop_parking(struct AdapterControlBlock *acb) 1317{ 1318 if (acb) { 1319 /* stop adapter background rebuild */ 1320 if (acb->acb_flags & ACB_F_MSG_START_BGRB) { 1321 uint32_t intmask_org; 1322 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 1323 intmask_org = arcmsr_disable_outbound_ints(acb); 1324 arcmsr_stop_adapter_bgrb(acb); 1325 arcmsr_flush_adapter_cache(acb); 1326 arcmsr_enable_outbound_ints(acb, intmask_org); 1327 } 1328 } 1329} 1330 1331void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb) 1332{ 1333 int32_t wqbuf_firstindex, wqbuf_lastindex; 1334 uint8_t *pQbuffer; 1335 struct QBUFFER __iomem *pwbuffer; 1336 uint8_t __iomem *iop_data; 1337 int32_t allxfer_len = 0; 1338 1339 pwbuffer = arcmsr_get_iop_wqbuffer(acb); 1340 iop_data = (uint8_t __iomem *)pwbuffer->data; 1341 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) { 1342 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 1343 wqbuf_firstindex = acb->wqbuf_firstindex; 1344 wqbuf_lastindex = acb->wqbuf_lastindex; 1345 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) { 1346 pQbuffer = &acb->wqbuffer[wqbuf_firstindex]; 1347 memcpy(iop_data, pQbuffer, 1); 1348 wqbuf_firstindex++; 1349 wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1350 iop_data++; 1351 allxfer_len++; 1352 } 1353 acb->wqbuf_firstindex = wqbuf_firstindex; 1354 pwbuffer->data_len = allxfer_len; 1355 arcmsr_iop_message_wrote(acb); 1356 } 1357} 1358 1359static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \ 1360 struct scsi_cmnd *cmd) 1361{ 1362 struct CMD_MESSAGE_FIELD *pcmdmessagefld; 1363 int retvalue = 0, transfer_len = 0; 1364 char *buffer; 1365 struct scatterlist *sg; 1366 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 | 1367 (uint32_t ) cmd->cmnd[6] << 16 | 1368 (uint32_t ) cmd->cmnd[7] << 8 | 1369 (uint32_t ) cmd->cmnd[8]; 1370 /* 4 bytes: Areca io control code */ 1371 1372 sg = scsi_sglist(cmd); 1373 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; 1374 if (scsi_sg_count(cmd) > 1) { 1375 retvalue = ARCMSR_MESSAGE_FAIL; 1376 goto message_out; 1377 } 1378 transfer_len += sg->length; 1379 1380 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) { 1381 retvalue = ARCMSR_MESSAGE_FAIL; 1382 goto message_out; 1383 } 1384 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer; 1385 switch(controlcode) { 1386 1387 case ARCMSR_MESSAGE_READ_RQBUFFER: { 1388 unsigned char *ver_addr; 1389 uint8_t *pQbuffer, *ptmpQbuffer; 1390 int32_t allxfer_len = 0; 1391 1392 ver_addr = kmalloc(1032, GFP_ATOMIC); 1393 if (!ver_addr) { 1394 retvalue = ARCMSR_MESSAGE_FAIL; 1395 goto message_out; 1396 } 1397 ptmpQbuffer = ver_addr; 1398 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex) 1399 && (allxfer_len < 1031)) { 1400 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex]; 1401 memcpy(ptmpQbuffer, pQbuffer, 1); 1402 acb->rqbuf_firstindex++; 1403 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1404 ptmpQbuffer++; 1405 allxfer_len++; 1406 } 1407 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1408 1409 struct QBUFFER __iomem *prbuffer; 1410 uint8_t __iomem *iop_data; 1411 int32_t iop_len; 1412 1413 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1414 prbuffer = arcmsr_get_iop_rqbuffer(acb); 1415 iop_data = prbuffer->data; 1416 iop_len = readl(&prbuffer->data_len); 1417 while (iop_len > 0) { 1418 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data); 1419 acb->rqbuf_lastindex++; 1420 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1421 iop_data++; 1422 iop_len--; 1423 } 1424 arcmsr_iop_message_read(acb); 1425 } 1426 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len); 1427 pcmdmessagefld->cmdmessage.Length = allxfer_len; 1428 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1429 kfree(ver_addr); 1430 } 1431 break; 1432 1433 case ARCMSR_MESSAGE_WRITE_WQBUFFER: { 1434 unsigned char *ver_addr; 1435 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex; 1436 uint8_t *pQbuffer, *ptmpuserbuffer; 1437 1438 ver_addr = kmalloc(1032, GFP_ATOMIC); 1439 if (!ver_addr) { 1440 retvalue = ARCMSR_MESSAGE_FAIL; 1441 goto message_out; 1442 } 1443 ptmpuserbuffer = ver_addr; 1444 user_len = pcmdmessagefld->cmdmessage.Length; 1445 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len); 1446 wqbuf_lastindex = acb->wqbuf_lastindex; 1447 wqbuf_firstindex = acb->wqbuf_firstindex; 1448 if (wqbuf_lastindex != wqbuf_firstindex) { 1449 struct SENSE_DATA *sensebuffer = 1450 (struct SENSE_DATA *)cmd->sense_buffer; 1451 arcmsr_post_ioctldata2iop(acb); 1452 /* has error report sensedata */ 1453 sensebuffer->ErrorCode = 0x70; 1454 sensebuffer->SenseKey = ILLEGAL_REQUEST; 1455 sensebuffer->AdditionalSenseLength = 0x0A; 1456 sensebuffer->AdditionalSenseCode = 0x20; 1457 sensebuffer->Valid = 1; 1458 retvalue = ARCMSR_MESSAGE_FAIL; 1459 } else { 1460 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1) 1461 &(ARCMSR_MAX_QBUFFER - 1); 1462 if (my_empty_len >= user_len) { 1463 while (user_len > 0) { 1464 pQbuffer = 1465 &acb->wqbuffer[acb->wqbuf_lastindex]; 1466 memcpy(pQbuffer, ptmpuserbuffer, 1); 1467 acb->wqbuf_lastindex++; 1468 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1469 ptmpuserbuffer++; 1470 user_len--; 1471 } 1472 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { 1473 acb->acb_flags &= 1474 ~ACB_F_MESSAGE_WQBUFFER_CLEARED; 1475 arcmsr_post_ioctldata2iop(acb); 1476 } 1477 } else { 1478 /* has error report sensedata */ 1479 struct SENSE_DATA *sensebuffer = 1480 (struct SENSE_DATA *)cmd->sense_buffer; 1481 sensebuffer->ErrorCode = 0x70; 1482 sensebuffer->SenseKey = ILLEGAL_REQUEST; 1483 sensebuffer->AdditionalSenseLength = 0x0A; 1484 sensebuffer->AdditionalSenseCode = 0x20; 1485 sensebuffer->Valid = 1; 1486 retvalue = ARCMSR_MESSAGE_FAIL; 1487 } 1488 } 1489 kfree(ver_addr); 1490 } 1491 break; 1492 1493 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: { 1494 uint8_t *pQbuffer = acb->rqbuffer; 1495 1496 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1497 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1498 arcmsr_iop_message_read(acb); 1499 } 1500 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED; 1501 acb->rqbuf_firstindex = 0; 1502 acb->rqbuf_lastindex = 0; 1503 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 1504 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1505 } 1506 break; 1507 1508 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: { 1509 uint8_t *pQbuffer = acb->wqbuffer; 1510 1511 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1512 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1513 arcmsr_iop_message_read(acb); 1514 } 1515 acb->acb_flags |= 1516 (ACB_F_MESSAGE_WQBUFFER_CLEARED | 1517 ACB_F_MESSAGE_WQBUFFER_READED); 1518 acb->wqbuf_firstindex = 0; 1519 acb->wqbuf_lastindex = 0; 1520 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 1521 pcmdmessagefld->cmdmessage.ReturnCode = 1522 ARCMSR_MESSAGE_RETURNCODE_OK; 1523 } 1524 break; 1525 1526 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: { 1527 uint8_t *pQbuffer; 1528 1529 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1530 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1531 arcmsr_iop_message_read(acb); 1532 } 1533 acb->acb_flags |= 1534 (ACB_F_MESSAGE_WQBUFFER_CLEARED 1535 | ACB_F_MESSAGE_RQBUFFER_CLEARED 1536 | ACB_F_MESSAGE_WQBUFFER_READED); 1537 acb->rqbuf_firstindex = 0; 1538 acb->rqbuf_lastindex = 0; 1539 acb->wqbuf_firstindex = 0; 1540 acb->wqbuf_lastindex = 0; 1541 pQbuffer = acb->rqbuffer; 1542 memset(pQbuffer, 0, sizeof(struct QBUFFER)); 1543 pQbuffer = acb->wqbuffer; 1544 memset(pQbuffer, 0, sizeof(struct QBUFFER)); 1545 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1546 } 1547 break; 1548 1549 case ARCMSR_MESSAGE_RETURN_CODE_3F: { 1550 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F; 1551 } 1552 break; 1553 1554 case ARCMSR_MESSAGE_SAY_HELLO: { 1555 int8_t *hello_string = "Hello! I am ARCMSR"; 1556 1557 memcpy(pcmdmessagefld->messagedatabuffer, hello_string 1558 , (int16_t)strlen(hello_string)); 1559 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1560 } 1561 break; 1562 1563 case ARCMSR_MESSAGE_SAY_GOODBYE: 1564 arcmsr_iop_parking(acb); 1565 break; 1566 1567 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: 1568 arcmsr_flush_adapter_cache(acb); 1569 break; 1570 1571 default: 1572 retvalue = ARCMSR_MESSAGE_FAIL; 1573 } 1574 message_out: 1575 sg = scsi_sglist(cmd); 1576 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1577 return retvalue; 1578} 1579 1580static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb) 1581{ 1582 struct list_head *head = &acb->ccb_free_list; 1583 struct CommandControlBlock *ccb = NULL; 1584 1585 if (!list_empty(head)) { 1586 ccb = list_entry(head->next, struct CommandControlBlock, list); 1587 list_del(head->next); 1588 } 1589 return ccb; 1590} 1591 1592static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb, 1593 struct scsi_cmnd *cmd) 1594{ 1595 switch (cmd->cmnd[0]) { 1596 case INQUIRY: { 1597 unsigned char inqdata[36]; 1598 char *buffer; 1599 struct scatterlist *sg; 1600 1601 if (cmd->device->lun) { 1602 cmd->result = (DID_TIME_OUT << 16); 1603 cmd->scsi_done(cmd); 1604 return; 1605 } 1606 inqdata[0] = TYPE_PROCESSOR; 1607 /* Periph Qualifier & Periph Dev Type */ 1608 inqdata[1] = 0; 1609 /* rem media bit & Dev Type Modifier */ 1610 inqdata[2] = 0; 1611 /* ISO, ECMA, & ANSI versions */ 1612 inqdata[4] = 31; 1613 /* length of additional data */ 1614 strncpy(&inqdata[8], "Areca ", 8); 1615 /* Vendor Identification */ 1616 strncpy(&inqdata[16], "RAID controller ", 16); 1617 /* Product Identification */ 1618 strncpy(&inqdata[32], "R001", 4); /* Product Revision */ 1619 1620 sg = scsi_sglist(cmd); 1621 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; 1622 1623 memcpy(buffer, inqdata, sizeof(inqdata)); 1624 sg = scsi_sglist(cmd); 1625 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1626 1627 cmd->scsi_done(cmd); 1628 } 1629 break; 1630 case WRITE_BUFFER: 1631 case READ_BUFFER: { 1632 if (arcmsr_iop_message_xfer(acb, cmd)) 1633 cmd->result = (DID_ERROR << 16); 1634 cmd->scsi_done(cmd); 1635 } 1636 break; 1637 default: 1638 cmd->scsi_done(cmd); 1639 } 1640} 1641 1642static int arcmsr_queue_command(struct scsi_cmnd *cmd, 1643 void (* done)(struct scsi_cmnd *)) 1644{ 1645 struct Scsi_Host *host = cmd->device->host; 1646 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 1647 struct CommandControlBlock *ccb; 1648 int target = cmd->device->id; 1649 int lun = cmd->device->lun; 1650 1651 cmd->scsi_done = done; 1652 cmd->host_scribble = NULL; 1653 cmd->result = 0; 1654 if (acb->acb_flags & ACB_F_BUS_RESET) { 1655 printk(KERN_NOTICE "arcmsr%d: bus reset" 1656 " and return busy \n" 1657 , acb->host->host_no); 1658 return SCSI_MLQUEUE_HOST_BUSY; 1659 } 1660 if (target == 16) { 1661 /* virtual device for iop message transfer */ 1662 arcmsr_handle_virtual_command(acb, cmd); 1663 return 0; 1664 } 1665 if (acb->devstate[target][lun] == ARECA_RAID_GONE) { 1666 uint8_t block_cmd; 1667 1668 block_cmd = cmd->cmnd[0] & 0x0f; 1669 if (block_cmd == 0x08 || block_cmd == 0x0a) { 1670 printk(KERN_NOTICE 1671 "arcmsr%d: block 'read/write'" 1672 "command with gone raid volume" 1673 " Cmd = %2x, TargetId = %d, Lun = %d \n" 1674 , acb->host->host_no 1675 , cmd->cmnd[0] 1676 , target, lun); 1677 cmd->result = (DID_NO_CONNECT << 16); 1678 cmd->scsi_done(cmd); 1679 return 0; 1680 } 1681 } 1682 if (atomic_read(&acb->ccboutstandingcount) >= 1683 ARCMSR_MAX_OUTSTANDING_CMD) 1684 return SCSI_MLQUEUE_HOST_BUSY; 1685 1686 ccb = arcmsr_get_freeccb(acb); 1687 if (!ccb) 1688 return SCSI_MLQUEUE_HOST_BUSY; 1689 if ( arcmsr_build_ccb( acb, ccb, cmd ) == FAILED ) { 1690 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1); 1691 cmd->scsi_done(cmd); 1692 return 0; 1693 } 1694 arcmsr_post_ccb(acb, ccb); 1695 return 0; 1696} 1697 1698static void arcmsr_get_hba_config(struct AdapterControlBlock *acb) 1699{ 1700 struct MessageUnit_A __iomem *reg = acb->pmuA; 1701 char *acb_firm_model = acb->firm_model; 1702 char *acb_firm_version = acb->firm_version; 1703 char __iomem *iop_firm_model = (char __iomem *)(®->message_rwbuffer[15]); 1704 char __iomem *iop_firm_version = (char __iomem *)(®->message_rwbuffer[17]); 1705 int count; 1706 1707 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, ®->inbound_msgaddr0); 1708 if (arcmsr_hba_wait_msgint_ready(acb)) { 1709 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ 1710 miscellaneous data' timeout \n", acb->host->host_no); 1711 } 1712 1713 count = 8; 1714 while (count) { 1715 *acb_firm_model = readb(iop_firm_model); 1716 acb_firm_model++; 1717 iop_firm_model++; 1718 count--; 1719 } 1720 1721 count = 16; 1722 while (count) { 1723 *acb_firm_version = readb(iop_firm_version); 1724 acb_firm_version++; 1725 iop_firm_version++; 1726 count--; 1727 } 1728 1729 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n" 1730 , acb->host->host_no 1731 , acb->firm_version); 1732 1733 acb->firm_request_len = readl(®->message_rwbuffer[1]); 1734 acb->firm_numbers_queue = readl(®->message_rwbuffer[2]); 1735 acb->firm_sdram_size = readl(®->message_rwbuffer[3]); 1736 acb->firm_hd_channels = readl(®->message_rwbuffer[4]); 1737} 1738 1739static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb) 1740{ 1741 struct MessageUnit_B *reg = acb->pmuB; 1742 uint32_t __iomem *lrwbuffer = reg->msgcode_rwbuffer_reg; 1743 char *acb_firm_model = acb->firm_model; 1744 char *acb_firm_version = acb->firm_version; 1745 char __iomem *iop_firm_model = (char __iomem *)(&lrwbuffer[15]); 1746 /*firm_model,15,60-67*/ 1747 char __iomem *iop_firm_version = (char __iomem *)(&lrwbuffer[17]); 1748 /*firm_version,17,68-83*/ 1749 int count; 1750 1751 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg); 1752 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1753 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ 1754 miscellaneous data' timeout \n", acb->host->host_no); 1755 } 1756 1757 count = 8; 1758 while (count) 1759 { 1760 *acb_firm_model = readb(iop_firm_model); 1761 acb_firm_model++; 1762 iop_firm_model++; 1763 count--; 1764 } 1765 1766 count = 16; 1767 while (count) 1768 { 1769 *acb_firm_version = readb(iop_firm_version); 1770 acb_firm_version++; 1771 iop_firm_version++; 1772 count--; 1773 } 1774 1775 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n", 1776 acb->host->host_no, 1777 acb->firm_version); 1778 1779 lrwbuffer++; 1780 acb->firm_request_len = readl(lrwbuffer++); 1781 /*firm_request_len,1,04-07*/ 1782 acb->firm_numbers_queue = readl(lrwbuffer++); 1783 /*firm_numbers_queue,2,08-11*/ 1784 acb->firm_sdram_size = readl(lrwbuffer++); 1785 /*firm_sdram_size,3,12-15*/ 1786 acb->firm_hd_channels = readl(lrwbuffer); 1787 /*firm_ide_channels,4,16-19*/ 1788} 1789 1790static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb) 1791{ 1792 switch (acb->adapter_type) { 1793 case ACB_ADAPTER_TYPE_A: { 1794 arcmsr_get_hba_config(acb); 1795 } 1796 break; 1797 1798 case ACB_ADAPTER_TYPE_B: { 1799 arcmsr_get_hbb_config(acb); 1800 } 1801 break; 1802 } 1803} 1804 1805static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb, 1806 struct CommandControlBlock *poll_ccb) 1807{ 1808 struct MessageUnit_A __iomem *reg = acb->pmuA; 1809 struct CommandControlBlock *ccb; 1810 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0; 1811 1812 polling_hba_ccb_retry: 1813 poll_count++; 1814 outbound_intstatus = readl(®->outbound_intstatus) & acb->outbound_int_enable; 1815 writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ 1816 while (1) { 1817 if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF) { 1818 if (poll_ccb_done) 1819 break; 1820 else { 1821 msleep(25); 1822 if (poll_count > 100) 1823 break; 1824 goto polling_hba_ccb_retry; 1825 } 1826 } 1827 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); 1828 poll_ccb_done = (ccb == poll_ccb) ? 1:0; 1829 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 1830 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) { 1831 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'" 1832 " poll command abort successfully \n" 1833 , acb->host->host_no 1834 , ccb->pcmd->device->id 1835 , ccb->pcmd->device->lun 1836 , ccb); 1837 ccb->pcmd->result = DID_ABORT << 16; 1838 arcmsr_ccb_complete(ccb, 1); 1839 poll_ccb_done = 1; 1840 continue; 1841 } 1842 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" 1843 " command done ccb = '0x%p'" 1844 "ccboutstandingcount = %d \n" 1845 , acb->host->host_no 1846 , ccb 1847 , atomic_read(&acb->ccboutstandingcount)); 1848 continue; 1849 } 1850 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 1851 } 1852} 1853 1854static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, 1855 struct CommandControlBlock *poll_ccb) 1856{ 1857 struct MessageUnit_B *reg = acb->pmuB; 1858 struct CommandControlBlock *ccb; 1859 uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0; 1860 int index; 1861 1862 polling_hbb_ccb_retry: 1863 poll_count++; 1864 /* clear doorbell interrupt */ 1865 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); 1866 while (1) { 1867 index = reg->doneq_index; 1868 if ((flag_ccb = readl(®->done_qbuffer[index])) == 0) { 1869 if (poll_ccb_done) 1870 break; 1871 else { 1872 msleep(25); 1873 if (poll_count > 100) 1874 break; 1875 goto polling_hbb_ccb_retry; 1876 } 1877 } 1878 writel(0, ®->done_qbuffer[index]); 1879 index++; 1880 /*if last index number set it to 0 */ 1881 index %= ARCMSR_MAX_HBB_POSTQUEUE; 1882 reg->doneq_index = index; 1883 /* check ifcommand done with no error*/ 1884 ccb = (struct CommandControlBlock *)\ 1885 (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/ 1886 poll_ccb_done = (ccb == poll_ccb) ? 1:0; 1887 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 1888 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) { 1889 printk(KERN_NOTICE "arcmsr%d: \ 1890 scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n" 1891 ,acb->host->host_no 1892 ,ccb->pcmd->device->id 1893 ,ccb->pcmd->device->lun 1894 ,ccb); 1895 ccb->pcmd->result = DID_ABORT << 16; 1896 arcmsr_ccb_complete(ccb, 1); 1897 continue; 1898 } 1899 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" 1900 " command done ccb = '0x%p'" 1901 "ccboutstandingcount = %d \n" 1902 , acb->host->host_no 1903 , ccb 1904 , atomic_read(&acb->ccboutstandingcount)); 1905 continue; 1906 } 1907 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 1908 } /*drain reply FIFO*/ 1909} 1910 1911static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, 1912 struct CommandControlBlock *poll_ccb) 1913{ 1914 switch (acb->adapter_type) { 1915 1916 case ACB_ADAPTER_TYPE_A: { 1917 arcmsr_polling_hba_ccbdone(acb,poll_ccb); 1918 } 1919 break; 1920 1921 case ACB_ADAPTER_TYPE_B: { 1922 arcmsr_polling_hbb_ccbdone(acb,poll_ccb); 1923 } 1924 } 1925} 1926 1927static int arcmsr_iop_confirm(struct AdapterControlBlock *acb) 1928{ 1929 uint32_t cdb_phyaddr, ccb_phyaddr_hi32; 1930 dma_addr_t dma_coherent_handle; 1931 /* 1932 ******************************************************************** 1933 ** here we need to tell iop 331 our freeccb.HighPart 1934 ** if freeccb.HighPart is not zero 1935 ******************************************************************** 1936 */ 1937 dma_coherent_handle = acb->dma_coherent_handle; 1938 cdb_phyaddr = (uint32_t)(dma_coherent_handle); 1939 ccb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16); 1940 /* 1941 *********************************************************************** 1942 ** if adapter type B, set window of "post command Q" 1943 *********************************************************************** 1944 */ 1945 switch (acb->adapter_type) { 1946 1947 case ACB_ADAPTER_TYPE_A: { 1948 if (ccb_phyaddr_hi32 != 0) { 1949 struct MessageUnit_A __iomem *reg = acb->pmuA; 1950 uint32_t intmask_org; 1951 intmask_org = arcmsr_disable_outbound_ints(acb); 1952 writel(ARCMSR_SIGNATURE_SET_CONFIG, \ 1953 ®->message_rwbuffer[0]); 1954 writel(ccb_phyaddr_hi32, ®->message_rwbuffer[1]); 1955 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \ 1956 ®->inbound_msgaddr0); 1957 if (arcmsr_hba_wait_msgint_ready(acb)) { 1958 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \ 1959 part physical address timeout\n", 1960 acb->host->host_no); 1961 return 1; 1962 } 1963 arcmsr_enable_outbound_ints(acb, intmask_org); 1964 } 1965 } 1966 break; 1967 1968 case ACB_ADAPTER_TYPE_B: { 1969 unsigned long post_queue_phyaddr; 1970 uint32_t __iomem *rwbuffer; 1971 1972 struct MessageUnit_B *reg = acb->pmuB; 1973 uint32_t intmask_org; 1974 intmask_org = arcmsr_disable_outbound_ints(acb); 1975 reg->postq_index = 0; 1976 reg->doneq_index = 0; 1977 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, 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 post_queue_phyaddr = cdb_phyaddr + ARCMSR_MAX_FREECCB_NUM * \ 1984 sizeof(struct CommandControlBlock) + offsetof(struct MessageUnit_B, post_qbuffer) ; 1985 rwbuffer = reg->msgcode_rwbuffer_reg; 1986 /* driver "set config" signature */ 1987 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++); 1988 /* normal should be zero */ 1989 writel(ccb_phyaddr_hi32, rwbuffer++); 1990 /* postQ size (256 + 8)*4 */ 1991 writel(post_queue_phyaddr, rwbuffer++); 1992 /* doneQ size (256 + 8)*4 */ 1993 writel(post_queue_phyaddr + 1056, rwbuffer++); 1994 /* ccb maxQ size must be --> [(256 + 8)*4]*/ 1995 writel(1056, rwbuffer); 1996 1997 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell_reg); 1998 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1999 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \ 2000 timeout \n",acb->host->host_no); 2001 return 1; 2002 } 2003 2004 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell_reg); 2005 if (arcmsr_hbb_wait_msgint_ready(acb)) { 2006 printk(KERN_NOTICE "arcmsr%d: 'can not set diver mode \n"\ 2007 ,acb->host->host_no); 2008 return 1; 2009 } 2010 arcmsr_enable_outbound_ints(acb, intmask_org); 2011 } 2012 break; 2013 } 2014 return 0; 2015} 2016 2017static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb) 2018{ 2019 uint32_t firmware_state = 0; 2020 2021 switch (acb->adapter_type) { 2022 2023 case ACB_ADAPTER_TYPE_A: { 2024 struct MessageUnit_A __iomem *reg = acb->pmuA; 2025 do { 2026 firmware_state = readl(®->outbound_msgaddr1); 2027 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0); 2028 } 2029 break; 2030 2031 case ACB_ADAPTER_TYPE_B: { 2032 struct MessageUnit_B *reg = acb->pmuB; 2033 do { 2034 firmware_state = readl(reg->iop2drv_doorbell_reg); 2035 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0); 2036 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg); 2037 } 2038 break; 2039 } 2040} 2041 2042static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb) 2043{ 2044 struct MessageUnit_A __iomem *reg = acb->pmuA; 2045 acb->acb_flags |= ACB_F_MSG_START_BGRB; 2046 writel(ARCMSR_INBOUND_MESG0_START_BGRB, ®->inbound_msgaddr0); 2047 if (arcmsr_hba_wait_msgint_ready(acb)) { 2048 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ 2049 rebulid' timeout \n", acb->host->host_no); 2050 } 2051} 2052 2053static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb) 2054{ 2055 struct MessageUnit_B *reg = acb->pmuB; 2056 acb->acb_flags |= ACB_F_MSG_START_BGRB; 2057 writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell_reg); 2058 if (arcmsr_hbb_wait_msgint_ready(acb)) { 2059 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ 2060 rebulid' timeout \n",acb->host->host_no); 2061 } 2062} 2063 2064static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb) 2065{ 2066 switch (acb->adapter_type) { 2067 case ACB_ADAPTER_TYPE_A: 2068 arcmsr_start_hba_bgrb(acb); 2069 break; 2070 case ACB_ADAPTER_TYPE_B: 2071 arcmsr_start_hbb_bgrb(acb); 2072 break; 2073 } 2074} 2075 2076static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb) 2077{ 2078 switch (acb->adapter_type) { 2079 case ACB_ADAPTER_TYPE_A: { 2080 struct MessageUnit_A __iomem *reg = acb->pmuA; 2081 uint32_t outbound_doorbell; 2082 /* empty doorbell Qbuffer if door bell ringed */ 2083 outbound_doorbell = readl(®->outbound_doorbell); 2084 /*clear doorbell interrupt */ 2085 writel(outbound_doorbell, ®->outbound_doorbell); 2086 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); 2087 } 2088 break; 2089 2090 case ACB_ADAPTER_TYPE_B: { 2091 struct MessageUnit_B *reg = acb->pmuB; 2092 /*clear interrupt and message state*/ 2093 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); 2094 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); 2095 /* let IOP know data has been read */ 2096 } 2097 break; 2098 } 2099} 2100 2101static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb) 2102{ 2103 switch (acb->adapter_type) { 2104 case ACB_ADAPTER_TYPE_A: 2105 return; 2106 case ACB_ADAPTER_TYPE_B: 2107 { 2108 struct MessageUnit_B *reg = acb->pmuB; 2109 writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell_reg); 2110 if(arcmsr_hbb_wait_msgint_ready(acb)) { 2111 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT"); 2112 return; 2113 } 2114 } 2115 break; 2116 } 2117 return; 2118} 2119 2120static void arcmsr_iop_init(struct AdapterControlBlock *acb) 2121{ 2122 uint32_t intmask_org; 2123 2124 /* disable all outbound interrupt */ 2125 intmask_org = arcmsr_disable_outbound_ints(acb); 2126 arcmsr_wait_firmware_ready(acb); 2127 arcmsr_iop_confirm(acb); 2128 arcmsr_get_firmware_spec(acb); 2129 /*start background rebuild*/ 2130 arcmsr_start_adapter_bgrb(acb); 2131 /* empty doorbell Qbuffer if door bell ringed */ 2132 arcmsr_clear_doorbell_queue_buffer(acb); 2133 arcmsr_enable_eoi_mode(acb); 2134 /* enable outbound Post Queue,outbound doorbell Interrupt */ 2135 arcmsr_enable_outbound_ints(acb, intmask_org); 2136 acb->acb_flags |= ACB_F_IOP_INITED; 2137} 2138 2139static void arcmsr_iop_reset(struct AdapterControlBlock *acb) 2140{ 2141 struct CommandControlBlock *ccb; 2142 uint32_t intmask_org; 2143 int i = 0; 2144 2145 if (atomic_read(&acb->ccboutstandingcount) != 0) { 2146 /* talk to iop 331 outstanding command aborted */ 2147 arcmsr_abort_allcmd(acb); 2148 2149 /* wait for 3 sec for all command aborted*/ 2150 ssleep(3); 2151 2152 /* disable all outbound interrupt */ 2153 intmask_org = arcmsr_disable_outbound_ints(acb); 2154 /* clear all outbound posted Q */ 2155 arcmsr_done4abort_postqueue(acb); 2156 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2157 ccb = acb->pccb_pool[i]; 2158 if (ccb->startdone == ARCMSR_CCB_START) { 2159 ccb->startdone = ARCMSR_CCB_ABORTED; 2160 arcmsr_ccb_complete(ccb, 1); 2161 } 2162 } 2163 /* enable all outbound interrupt */ 2164 arcmsr_enable_outbound_ints(acb, intmask_org); 2165 } 2166} 2167 2168static int arcmsr_bus_reset(struct scsi_cmnd *cmd) 2169{ 2170 struct AdapterControlBlock *acb = 2171 (struct AdapterControlBlock *)cmd->device->host->hostdata; 2172 int i; 2173 2174 acb->num_resets++; 2175 acb->acb_flags |= ACB_F_BUS_RESET; 2176 for (i = 0; i < 400; i++) { 2177 if (!atomic_read(&acb->ccboutstandingcount)) 2178 break; 2179 arcmsr_interrupt(acb);/* FIXME: need spinlock */ 2180 msleep(25); 2181 } 2182 arcmsr_iop_reset(acb); 2183 acb->acb_flags &= ~ACB_F_BUS_RESET; 2184 return SUCCESS; 2185} 2186 2187static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb, 2188 struct CommandControlBlock *ccb) 2189{ 2190 u32 intmask; 2191 2192 ccb->startdone = ARCMSR_CCB_ABORTED; 2193 2194 /* 2195 ** Wait for 3 sec for all command done. 2196 */ 2197 ssleep(3); 2198 2199 intmask = arcmsr_disable_outbound_ints(acb); 2200 arcmsr_polling_ccbdone(acb, ccb); 2201 arcmsr_enable_outbound_ints(acb, intmask); 2202} 2203 2204static int arcmsr_abort(struct scsi_cmnd *cmd) 2205{ 2206 struct AdapterControlBlock *acb = 2207 (struct AdapterControlBlock *)cmd->device->host->hostdata; 2208 int i = 0; 2209 2210 printk(KERN_NOTICE 2211 "arcmsr%d: abort device command of scsi id = %d lun = %d \n", 2212 acb->host->host_no, cmd->device->id, cmd->device->lun); 2213 acb->num_aborts++; 2214 /* 2215 ************************************************ 2216 ** the all interrupt service routine is locked 2217 ** we need to handle it as soon as possible and exit 2218 ************************************************ 2219 */ 2220 if (!atomic_read(&acb->ccboutstandingcount)) 2221 return SUCCESS; 2222 2223 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2224 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 2225 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) { 2226 arcmsr_abort_one_cmd(acb, ccb); 2227 break; 2228 } 2229 } 2230 2231 return SUCCESS; 2232} 2233 2234static const char *arcmsr_info(struct Scsi_Host *host) 2235{ 2236 struct AdapterControlBlock *acb = 2237 (struct AdapterControlBlock *) host->hostdata; 2238 static char buf[256]; 2239 char *type; 2240 int raid6 = 1; 2241 2242 switch (acb->pdev->device) { 2243 case PCI_DEVICE_ID_ARECA_1110: 2244 case PCI_DEVICE_ID_ARECA_1200: 2245 case PCI_DEVICE_ID_ARECA_1202: 2246 case PCI_DEVICE_ID_ARECA_1210: 2247 raid6 = 0; 2248 /*FALLTHRU*/ 2249 case PCI_DEVICE_ID_ARECA_1120: 2250 case PCI_DEVICE_ID_ARECA_1130: 2251 case PCI_DEVICE_ID_ARECA_1160: 2252 case PCI_DEVICE_ID_ARECA_1170: 2253 case PCI_DEVICE_ID_ARECA_1201: 2254 case PCI_DEVICE_ID_ARECA_1220: 2255 case PCI_DEVICE_ID_ARECA_1230: 2256 case PCI_DEVICE_ID_ARECA_1260: 2257 case PCI_DEVICE_ID_ARECA_1270: 2258 case PCI_DEVICE_ID_ARECA_1280: 2259 type = "SATA"; 2260 break; 2261 case PCI_DEVICE_ID_ARECA_1380: 2262 case PCI_DEVICE_ID_ARECA_1381: 2263 case PCI_DEVICE_ID_ARECA_1680: 2264 case PCI_DEVICE_ID_ARECA_1681: 2265 type = "SAS"; 2266 break; 2267 default: 2268 type = "X-TYPE"; 2269 break; 2270 } 2271 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s", 2272 type, raid6 ? "( RAID6 capable)" : "", 2273 ARCMSR_DRIVER_VERSION); 2274 return buf; 2275} 2276#ifdef CONFIG_SCSI_ARCMSR_AER 2277static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev) 2278{ 2279 struct Scsi_Host *host = pci_get_drvdata(pdev); 2280 struct AdapterControlBlock *acb = 2281 (struct AdapterControlBlock *) host->hostdata; 2282 uint32_t intmask_org; 2283 int i, j; 2284 2285 if (pci_enable_device(pdev)) { 2286 return PCI_ERS_RESULT_DISCONNECT; 2287 } 2288 pci_set_master(pdev); 2289 intmask_org = arcmsr_disable_outbound_ints(acb); 2290 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 2291 ACB_F_MESSAGE_RQBUFFER_CLEARED | 2292 ACB_F_MESSAGE_WQBUFFER_READED); 2293 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 2294 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 2295 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 2296 acb->devstate[i][j] = ARECA_RAID_GONE; 2297 2298 arcmsr_wait_firmware_ready(acb); 2299 arcmsr_iop_confirm(acb); 2300 /* disable all outbound interrupt */ 2301 arcmsr_get_firmware_spec(acb); 2302 /*start background rebuild*/ 2303 arcmsr_start_adapter_bgrb(acb); 2304 /* empty doorbell Qbuffer if door bell ringed */ 2305 arcmsr_clear_doorbell_queue_buffer(acb); 2306 arcmsr_enable_eoi_mode(acb); 2307 /* enable outbound Post Queue,outbound doorbell Interrupt */ 2308 arcmsr_enable_outbound_ints(acb, intmask_org); 2309 acb->acb_flags |= ACB_F_IOP_INITED; 2310 2311 pci_enable_pcie_error_reporting(pdev); 2312 return PCI_ERS_RESULT_RECOVERED; 2313} 2314 2315static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev) 2316{ 2317 struct Scsi_Host *host = pci_get_drvdata(pdev); 2318 struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata; 2319 struct CommandControlBlock *ccb; 2320 uint32_t intmask_org; 2321 int i = 0; 2322 2323 if (atomic_read(&acb->ccboutstandingcount) != 0) { 2324 /* talk to iop 331 outstanding command aborted */ 2325 arcmsr_abort_allcmd(acb); 2326 /* wait for 3 sec for all command aborted*/ 2327 ssleep(3); 2328 /* disable all outbound interrupt */ 2329 intmask_org = arcmsr_disable_outbound_ints(acb); 2330 /* clear all outbound posted Q */ 2331 arcmsr_done4abort_postqueue(acb); 2332 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2333 ccb = acb->pccb_pool[i]; 2334 if (ccb->startdone == ARCMSR_CCB_START) { 2335 ccb->startdone = ARCMSR_CCB_ABORTED; 2336 arcmsr_ccb_complete(ccb, 1); 2337 } 2338 } 2339 /* enable all outbound interrupt */ 2340 arcmsr_enable_outbound_ints(acb, intmask_org); 2341 } 2342 pci_disable_device(pdev); 2343} 2344 2345static void arcmsr_pci_ers_disconnect_forepart(struct pci_dev *pdev) 2346{ 2347 struct Scsi_Host *host = pci_get_drvdata(pdev); 2348 struct AdapterControlBlock *acb = \ 2349 (struct AdapterControlBlock *)host->hostdata; 2350 2351 arcmsr_stop_adapter_bgrb(acb); 2352 arcmsr_flush_adapter_cache(acb); 2353} 2354 2355static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 2356 pci_channel_state_t state) 2357{ 2358 switch (state) { 2359 case pci_channel_io_frozen: 2360 arcmsr_pci_ers_need_reset_forepart(pdev); 2361 return PCI_ERS_RESULT_NEED_RESET; 2362 case pci_channel_io_perm_failure: 2363 arcmsr_pci_ers_disconnect_forepart(pdev); 2364 return PCI_ERS_RESULT_DISCONNECT; 2365 break; 2366 default: 2367 return PCI_ERS_RESULT_NEED_RESET; 2368 } 2369} 2370#endif 2371