1 /* 2 * Disk Array driver for HP Smart Array SAS controllers 3 * Copyright 2000, 2009 Hewlett-Packard Development Company, L.P. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; version 2 of the License. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 12 * NON INFRINGEMENT. See the GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 17 * 18 * Questions/Comments/Bugfixes to iss_storagedev@hp.com 19 * 20 */ 21 22 #include <linux/module.h> 23 #include <linux/interrupt.h> 24 #include <linux/types.h> 25 #include <linux/pci.h> 26 #include <linux/kernel.h> 27 #include <linux/slab.h> 28 #include <linux/delay.h> 29 #include <linux/fs.h> 30 #include <linux/timer.h> 31 #include <linux/seq_file.h> 32 #include <linux/init.h> 33 #include <linux/spinlock.h> 34 #include <linux/compat.h> 35 #include <linux/blktrace_api.h> 36 #include <linux/uaccess.h> 37 #include <linux/io.h> 38 #include <linux/dma-mapping.h> 39 #include <linux/completion.h> 40 #include <linux/moduleparam.h> 41 #include <scsi/scsi.h> 42 #include <scsi/scsi_cmnd.h> 43 #include <scsi/scsi_device.h> 44 #include <scsi/scsi_host.h> 45 #include <scsi/scsi_tcq.h> 46 #include <linux/cciss_ioctl.h> 47 #include <linux/string.h> 48 #include <linux/bitmap.h> 49 #include <asm/atomic.h> 50 #include <linux/kthread.h> 51 #include "hpsa_cmd.h" 52 #include "hpsa.h" 53 54 /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */ 55 #define HPSA_DRIVER_VERSION "2.0.2-1" 56 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" 57 58 /* How long to wait (in milliseconds) for board to go into simple mode */ 59 #define MAX_CONFIG_WAIT 30000 60 #define MAX_IOCTL_CONFIG_WAIT 1000 61 62 /*define how many times we will try a command because of bus resets */ 63 #define MAX_CMD_RETRIES 3 64 65 /* Embedded module documentation macros - see modules.h */ 66 MODULE_AUTHOR("Hewlett-Packard Company"); 67 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ 68 HPSA_DRIVER_VERSION); 69 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); 70 MODULE_VERSION(HPSA_DRIVER_VERSION); 71 MODULE_LICENSE("GPL"); 72 73 static int hpsa_allow_any; 74 module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR); 75 MODULE_PARM_DESC(hpsa_allow_any, 76 "Allow hpsa driver to access unknown HP Smart Array hardware"); 77 static int hpsa_simple_mode; 78 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR); 79 MODULE_PARM_DESC(hpsa_simple_mode, 80 "Use 'simple mode' rather than 'performant mode'"); 81 82 /* define the PCI info for the cards we can control */ 83 static const struct pci_device_id hpsa_pci_device_id[] = { 84 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, 85 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, 86 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, 87 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, 88 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, 89 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324a}, 90 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324b}, 91 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233}, 92 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350}, 93 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351}, 94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352}, 95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353}, 96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354}, 97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355}, 98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356}, 99 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 100 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, 101 {0,} 102 }; 103 104 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id); 105 106 /* board_id = Subsystem Device ID & Vendor ID 107 * product = Marketing Name for the board 108 * access = Address of the struct of function pointers 109 */ 110 static struct board_type products[] = { 111 {0x3241103C, "Smart Array P212", &SA5_access}, 112 {0x3243103C, "Smart Array P410", &SA5_access}, 113 {0x3245103C, "Smart Array P410i", &SA5_access}, 114 {0x3247103C, "Smart Array P411", &SA5_access}, 115 {0x3249103C, "Smart Array P812", &SA5_access}, 116 {0x324a103C, "Smart Array P712m", &SA5_access}, 117 {0x324b103C, "Smart Array P711m", &SA5_access}, 118 {0x3350103C, "Smart Array", &SA5_access}, 119 {0x3351103C, "Smart Array", &SA5_access}, 120 {0x3352103C, "Smart Array", &SA5_access}, 121 {0x3353103C, "Smart Array", &SA5_access}, 122 {0x3354103C, "Smart Array", &SA5_access}, 123 {0x3355103C, "Smart Array", &SA5_access}, 124 {0x3356103C, "Smart Array", &SA5_access}, 125 {0xFFFF103C, "Unknown Smart Array", &SA5_access}, 126 }; 127 128 static int number_of_controllers; 129 130 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); 131 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id); 132 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg); 133 static void start_io(struct ctlr_info *h); 134 135 #ifdef CONFIG_COMPAT 136 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg); 137 #endif 138 139 static void cmd_free(struct ctlr_info *h, struct CommandList *c); 140 static void cmd_special_free(struct ctlr_info *h, struct CommandList *c); 141 static struct CommandList *cmd_alloc(struct ctlr_info *h); 142 static struct CommandList *cmd_special_alloc(struct ctlr_info *h); 143 static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, 144 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, 145 int cmd_type); 146 147 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd); 148 static void hpsa_scan_start(struct Scsi_Host *); 149 static int hpsa_scan_finished(struct Scsi_Host *sh, 150 unsigned long elapsed_time); 151 static int hpsa_change_queue_depth(struct scsi_device *sdev, 152 int qdepth, int reason); 153 154 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); 155 static int hpsa_slave_alloc(struct scsi_device *sdev); 156 static void hpsa_slave_destroy(struct scsi_device *sdev); 157 158 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno); 159 static int check_for_unit_attention(struct ctlr_info *h, 160 struct CommandList *c); 161 static void check_ioctl_unit_attention(struct ctlr_info *h, 162 struct CommandList *c); 163 /* performant mode helper functions */ 164 static void calc_bucket_map(int *bucket, int num_buckets, 165 int nsgs, int *bucket_map); 166 static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); 167 static inline u32 next_command(struct ctlr_info *h); 168 static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev, 169 void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, 170 u64 *cfg_offset); 171 static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev, 172 unsigned long *memory_bar); 173 static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id); 174 static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev, 175 void __iomem *vaddr, int wait_for_ready); 176 #define BOARD_NOT_READY 0 177 #define BOARD_READY 1 178 179 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) 180 { 181 unsigned long *priv = shost_priv(sdev->host); 182 return (struct ctlr_info *) *priv; 183 } 184 185 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) 186 { 187 unsigned long *priv = shost_priv(sh); 188 return (struct ctlr_info *) *priv; 189 } 190 191 static int check_for_unit_attention(struct ctlr_info *h, 192 struct CommandList *c) 193 { 194 if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) 195 return 0; 196 197 switch (c->err_info->SenseInfo[12]) { 198 case STATE_CHANGED: 199 dev_warn(&h->pdev->dev, "hpsa%d: a state change " 200 "detected, command retried\n", h->ctlr); 201 break; 202 case LUN_FAILED: 203 dev_warn(&h->pdev->dev, "hpsa%d: LUN failure " 204 "detected, action required\n", h->ctlr); 205 break; 206 case REPORT_LUNS_CHANGED: 207 dev_warn(&h->pdev->dev, "hpsa%d: report LUN data " 208 "changed, action required\n", h->ctlr); 209 /* 210 * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. 211 */ 212 break; 213 case POWER_OR_RESET: 214 dev_warn(&h->pdev->dev, "hpsa%d: a power on " 215 "or device reset detected\n", h->ctlr); 216 break; 217 case UNIT_ATTENTION_CLEARED: 218 dev_warn(&h->pdev->dev, "hpsa%d: unit attention " 219 "cleared by another initiator\n", h->ctlr); 220 break; 221 default: 222 dev_warn(&h->pdev->dev, "hpsa%d: unknown " 223 "unit attention detected\n", h->ctlr); 224 break; 225 } 226 return 1; 227 } 228 229 static ssize_t host_store_rescan(struct device *dev, 230 struct device_attribute *attr, 231 const char *buf, size_t count) 232 { 233 struct ctlr_info *h; 234 struct Scsi_Host *shost = class_to_shost(dev); 235 h = shost_to_hba(shost); 236 hpsa_scan_start(h->scsi_host); 237 return count; 238 } 239 240 static ssize_t host_show_firmware_revision(struct device *dev, 241 struct device_attribute *attr, char *buf) 242 { 243 struct ctlr_info *h; 244 struct Scsi_Host *shost = class_to_shost(dev); 245 unsigned char *fwrev; 246 247 h = shost_to_hba(shost); 248 if (!h->hba_inquiry_data) 249 return 0; 250 fwrev = &h->hba_inquiry_data[32]; 251 return snprintf(buf, 20, "%c%c%c%c\n", 252 fwrev[0], fwrev[1], fwrev[2], fwrev[3]); 253 } 254 255 static ssize_t host_show_commands_outstanding(struct device *dev, 256 struct device_attribute *attr, char *buf) 257 { 258 struct Scsi_Host *shost = class_to_shost(dev); 259 struct ctlr_info *h = shost_to_hba(shost); 260 261 return snprintf(buf, 20, "%d\n", h->commands_outstanding); 262 } 263 264 static ssize_t host_show_transport_mode(struct device *dev, 265 struct device_attribute *attr, char *buf) 266 { 267 struct ctlr_info *h; 268 struct Scsi_Host *shost = class_to_shost(dev); 269 270 h = shost_to_hba(shost); 271 return snprintf(buf, 20, "%s\n", 272 h->transMethod & CFGTBL_Trans_Performant ? 273 "performant" : "simple"); 274 } 275 276 /* List of controllers which cannot be reset on kexec with reset_devices */ 277 static u32 unresettable_controller[] = { 278 0x324a103C, /* Smart Array P712m */ 279 0x324b103C, /* SmartArray P711m */ 280 0x3223103C, /* Smart Array P800 */ 281 0x3234103C, /* Smart Array P400 */ 282 0x3235103C, /* Smart Array P400i */ 283 0x3211103C, /* Smart Array E200i */ 284 0x3212103C, /* Smart Array E200 */ 285 0x3213103C, /* Smart Array E200i */ 286 0x3214103C, /* Smart Array E200i */ 287 0x3215103C, /* Smart Array E200i */ 288 0x3237103C, /* Smart Array E500 */ 289 0x323D103C, /* Smart Array P700m */ 290 0x409C0E11, /* Smart Array 6400 */ 291 0x409D0E11, /* Smart Array 6400 EM */ 292 }; 293 294 static int ctlr_is_resettable(struct ctlr_info *h) 295 { 296 int i; 297 298 for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++) 299 if (unresettable_controller[i] == h->board_id) 300 return 0; 301 return 1; 302 } 303 304 static ssize_t host_show_resettable(struct device *dev, 305 struct device_attribute *attr, char *buf) 306 { 307 struct ctlr_info *h; 308 struct Scsi_Host *shost = class_to_shost(dev); 309 310 h = shost_to_hba(shost); 311 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h)); 312 } 313 314 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) 315 { 316 return (scsi3addr[3] & 0xC0) == 0x40; 317 } 318 319 static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", 320 "UNKNOWN" 321 }; 322 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1) 323 324 static ssize_t raid_level_show(struct device *dev, 325 struct device_attribute *attr, char *buf) 326 { 327 ssize_t l = 0; 328 unsigned char rlevel; 329 struct ctlr_info *h; 330 struct scsi_device *sdev; 331 struct hpsa_scsi_dev_t *hdev; 332 unsigned long flags; 333 334 sdev = to_scsi_device(dev); 335 h = sdev_to_hba(sdev); 336 spin_lock_irqsave(&h->lock, flags); 337 hdev = sdev->hostdata; 338 if (!hdev) { 339 spin_unlock_irqrestore(&h->lock, flags); 340 return -ENODEV; 341 } 342 343 /* Is this even a logical drive? */ 344 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) { 345 spin_unlock_irqrestore(&h->lock, flags); 346 l = snprintf(buf, PAGE_SIZE, "N/A\n"); 347 return l; 348 } 349 350 rlevel = hdev->raid_level; 351 spin_unlock_irqrestore(&h->lock, flags); 352 if (rlevel > RAID_UNKNOWN) 353 rlevel = RAID_UNKNOWN; 354 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]); 355 return l; 356 } 357 358 static ssize_t lunid_show(struct device *dev, 359 struct device_attribute *attr, char *buf) 360 { 361 struct ctlr_info *h; 362 struct scsi_device *sdev; 363 struct hpsa_scsi_dev_t *hdev; 364 unsigned long flags; 365 unsigned char lunid[8]; 366 367 sdev = to_scsi_device(dev); 368 h = sdev_to_hba(sdev); 369 spin_lock_irqsave(&h->lock, flags); 370 hdev = sdev->hostdata; 371 if (!hdev) { 372 spin_unlock_irqrestore(&h->lock, flags); 373 return -ENODEV; 374 } 375 memcpy(lunid, hdev->scsi3addr, sizeof(lunid)); 376 spin_unlock_irqrestore(&h->lock, flags); 377 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", 378 lunid[0], lunid[1], lunid[2], lunid[3], 379 lunid[4], lunid[5], lunid[6], lunid[7]); 380 } 381 382 static ssize_t unique_id_show(struct device *dev, 383 struct device_attribute *attr, char *buf) 384 { 385 struct ctlr_info *h; 386 struct scsi_device *sdev; 387 struct hpsa_scsi_dev_t *hdev; 388 unsigned long flags; 389 unsigned char sn[16]; 390 391 sdev = to_scsi_device(dev); 392 h = sdev_to_hba(sdev); 393 spin_lock_irqsave(&h->lock, flags); 394 hdev = sdev->hostdata; 395 if (!hdev) { 396 spin_unlock_irqrestore(&h->lock, flags); 397 return -ENODEV; 398 } 399 memcpy(sn, hdev->device_id, sizeof(sn)); 400 spin_unlock_irqrestore(&h->lock, flags); 401 return snprintf(buf, 16 * 2 + 2, 402 "%02X%02X%02X%02X%02X%02X%02X%02X" 403 "%02X%02X%02X%02X%02X%02X%02X%02X\n", 404 sn[0], sn[1], sn[2], sn[3], 405 sn[4], sn[5], sn[6], sn[7], 406 sn[8], sn[9], sn[10], sn[11], 407 sn[12], sn[13], sn[14], sn[15]); 408 } 409 410 static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); 411 static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); 412 static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); 413 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); 414 static DEVICE_ATTR(firmware_revision, S_IRUGO, 415 host_show_firmware_revision, NULL); 416 static DEVICE_ATTR(commands_outstanding, S_IRUGO, 417 host_show_commands_outstanding, NULL); 418 static DEVICE_ATTR(transport_mode, S_IRUGO, 419 host_show_transport_mode, NULL); 420 static DEVICE_ATTR(resettable, S_IRUGO, 421 host_show_resettable, NULL); 422 423 static struct device_attribute *hpsa_sdev_attrs[] = { 424 &dev_attr_raid_level, 425 &dev_attr_lunid, 426 &dev_attr_unique_id, 427 NULL, 428 }; 429 430 static struct device_attribute *hpsa_shost_attrs[] = { 431 &dev_attr_rescan, 432 &dev_attr_firmware_revision, 433 &dev_attr_commands_outstanding, 434 &dev_attr_transport_mode, 435 &dev_attr_resettable, 436 NULL, 437 }; 438 439 static struct scsi_host_template hpsa_driver_template = { 440 .module = THIS_MODULE, 441 .name = "hpsa", 442 .proc_name = "hpsa", 443 .queuecommand = hpsa_scsi_queue_command, 444 .scan_start = hpsa_scan_start, 445 .scan_finished = hpsa_scan_finished, 446 .change_queue_depth = hpsa_change_queue_depth, 447 .this_id = -1, 448 .use_clustering = ENABLE_CLUSTERING, 449 .eh_device_reset_handler = hpsa_eh_device_reset_handler, 450 .ioctl = hpsa_ioctl, 451 .slave_alloc = hpsa_slave_alloc, 452 .slave_destroy = hpsa_slave_destroy, 453 #ifdef CONFIG_COMPAT 454 .compat_ioctl = hpsa_compat_ioctl, 455 #endif 456 .sdev_attrs = hpsa_sdev_attrs, 457 .shost_attrs = hpsa_shost_attrs, 458 }; 459 460 461 /* Enqueuing and dequeuing functions for cmdlists. */ 462 static inline void addQ(struct list_head *list, struct CommandList *c) 463 { 464 list_add_tail(&c->list, list); 465 } 466 467 static inline u32 next_command(struct ctlr_info *h) 468 { 469 u32 a; 470 471 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) 472 return h->access.command_completed(h); 473 474 if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { 475 a = *(h->reply_pool_head); /* Next cmd in ring buffer */ 476 (h->reply_pool_head)++; 477 h->commands_outstanding--; 478 } else { 479 a = FIFO_EMPTY; 480 } 481 /* Check for wraparound */ 482 if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { 483 h->reply_pool_head = h->reply_pool; 484 h->reply_pool_wraparound ^= 1; 485 } 486 return a; 487 } 488 489 /* set_performant_mode: Modify the tag for cciss performant 490 * set bit 0 for pull model, bits 3-1 for block fetch 491 * register number 492 */ 493 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c) 494 { 495 if (likely(h->transMethod & CFGTBL_Trans_Performant)) 496 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); 497 } 498 499 static void enqueue_cmd_and_start_io(struct ctlr_info *h, 500 struct CommandList *c) 501 { 502 unsigned long flags; 503 504 set_performant_mode(h, c); 505 spin_lock_irqsave(&h->lock, flags); 506 addQ(&h->reqQ, c); 507 h->Qdepth++; 508 start_io(h); 509 spin_unlock_irqrestore(&h->lock, flags); 510 } 511 512 static inline void removeQ(struct CommandList *c) 513 { 514 if (WARN_ON(list_empty(&c->list))) 515 return; 516 list_del_init(&c->list); 517 } 518 519 static inline int is_hba_lunid(unsigned char scsi3addr[]) 520 { 521 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; 522 } 523 524 static inline int is_scsi_rev_5(struct ctlr_info *h) 525 { 526 if (!h->hba_inquiry_data) 527 return 0; 528 if ((h->hba_inquiry_data[2] & 0x07) == 5) 529 return 1; 530 return 0; 531 } 532 533 static int hpsa_find_target_lun(struct ctlr_info *h, 534 unsigned char scsi3addr[], int bus, int *target, int *lun) 535 { 536 /* finds an unused bus, target, lun for a new physical device 537 * assumes h->devlock is held 538 */ 539 int i, found = 0; 540 DECLARE_BITMAP(lun_taken, HPSA_MAX_SCSI_DEVS_PER_HBA); 541 542 memset(&lun_taken[0], 0, HPSA_MAX_SCSI_DEVS_PER_HBA >> 3); 543 544 for (i = 0; i < h->ndevices; i++) { 545 if (h->dev[i]->bus == bus && h->dev[i]->target != -1) 546 set_bit(h->dev[i]->target, lun_taken); 547 } 548 549 for (i = 0; i < HPSA_MAX_SCSI_DEVS_PER_HBA; i++) { 550 if (!test_bit(i, lun_taken)) { 551 /* *bus = 1; */ 552 *target = i; 553 *lun = 0; 554 found = 1; 555 break; 556 } 557 } 558 return !found; 559 } 560 561 /* Add an entry into h->dev[] array. */ 562 static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno, 563 struct hpsa_scsi_dev_t *device, 564 struct hpsa_scsi_dev_t *added[], int *nadded) 565 { 566 /* assumes h->devlock is held */ 567 int n = h->ndevices; 568 int i; 569 unsigned char addr1[8], addr2[8]; 570 struct hpsa_scsi_dev_t *sd; 571 572 if (n >= HPSA_MAX_SCSI_DEVS_PER_HBA) { 573 dev_err(&h->pdev->dev, "too many devices, some will be " 574 "inaccessible.\n"); 575 return -1; 576 } 577 578 /* physical devices do not have lun or target assigned until now. */ 579 if (device->lun != -1) 580 /* Logical device, lun is already assigned. */ 581 goto lun_assigned; 582 583 /* If this device a non-zero lun of a multi-lun device 584 * byte 4 of the 8-byte LUN addr will contain the logical 585 * unit no, zero otherise. 586 */ 587 if (device->scsi3addr[4] == 0) { 588 /* This is not a non-zero lun of a multi-lun device */ 589 if (hpsa_find_target_lun(h, device->scsi3addr, 590 device->bus, &device->target, &device->lun) != 0) 591 return -1; 592 goto lun_assigned; 593 } 594 595 /* This is a non-zero lun of a multi-lun device. 596 * Search through our list and find the device which 597 * has the same 8 byte LUN address, excepting byte 4. 598 * Assign the same bus and target for this new LUN. 599 * Use the logical unit number from the firmware. 600 */ 601 memcpy(addr1, device->scsi3addr, 8); 602 addr1[4] = 0; 603 for (i = 0; i < n; i++) { 604 sd = h->dev[i]; 605 memcpy(addr2, sd->scsi3addr, 8); 606 addr2[4] = 0; 607 /* differ only in byte 4? */ 608 if (memcmp(addr1, addr2, 8) == 0) { 609 device->bus = sd->bus; 610 device->target = sd->target; 611 device->lun = device->scsi3addr[4]; 612 break; 613 } 614 } 615 if (device->lun == -1) { 616 dev_warn(&h->pdev->dev, "physical device with no LUN=0," 617 " suspect firmware bug or unsupported hardware " 618 "configuration.\n"); 619 return -1; 620 } 621 622 lun_assigned: 623 624 h->dev[n] = device; 625 h->ndevices++; 626 added[*nadded] = device; 627 (*nadded)++; 628 629 /* initially, (before registering with scsi layer) we don't 630 * know our hostno and we don't want to print anything first 631 * time anyway (the scsi layer's inquiries will show that info) 632 */ 633 /* if (hostno != -1) */ 634 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n", 635 scsi_device_type(device->devtype), hostno, 636 device->bus, device->target, device->lun); 637 return 0; 638 } 639 640 /* Replace an entry from h->dev[] array. */ 641 static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno, 642 int entry, struct hpsa_scsi_dev_t *new_entry, 643 struct hpsa_scsi_dev_t *added[], int *nadded, 644 struct hpsa_scsi_dev_t *removed[], int *nremoved) 645 { 646 /* assumes h->devlock is held */ 647 BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA); 648 removed[*nremoved] = h->dev[entry]; 649 (*nremoved)++; 650 h->dev[entry] = new_entry; 651 added[*nadded] = new_entry; 652 (*nadded)++; 653 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n", 654 scsi_device_type(new_entry->devtype), hostno, new_entry->bus, 655 new_entry->target, new_entry->lun); 656 } 657 658 /* Remove an entry from h->dev[] array. */ 659 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry, 660 struct hpsa_scsi_dev_t *removed[], int *nremoved) 661 { 662 /* assumes h->devlock is held */ 663 int i; 664 struct hpsa_scsi_dev_t *sd; 665 666 BUG_ON(entry < 0 || entry >= HPSA_MAX_SCSI_DEVS_PER_HBA); 667 668 sd = h->dev[entry]; 669 removed[*nremoved] = h->dev[entry]; 670 (*nremoved)++; 671 672 for (i = entry; i < h->ndevices-1; i++) 673 h->dev[i] = h->dev[i+1]; 674 h->ndevices--; 675 dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n", 676 scsi_device_type(sd->devtype), hostno, sd->bus, sd->target, 677 sd->lun); 678 } 679 680 #define SCSI3ADDR_EQ(a, b) ( \ 681 (a)[7] == (b)[7] && \ 682 (a)[6] == (b)[6] && \ 683 (a)[5] == (b)[5] && \ 684 (a)[4] == (b)[4] && \ 685 (a)[3] == (b)[3] && \ 686 (a)[2] == (b)[2] && \ 687 (a)[1] == (b)[1] && \ 688 (a)[0] == (b)[0]) 689 690 static void fixup_botched_add(struct ctlr_info *h, 691 struct hpsa_scsi_dev_t *added) 692 { 693 /* called when scsi_add_device fails in order to re-adjust 694 * h->dev[] to match the mid layer's view. 695 */ 696 unsigned long flags; 697 int i, j; 698 699 spin_lock_irqsave(&h->lock, flags); 700 for (i = 0; i < h->ndevices; i++) { 701 if (h->dev[i] == added) { 702 for (j = i; j < h->ndevices-1; j++) 703 h->dev[j] = h->dev[j+1]; 704 h->ndevices--; 705 break; 706 } 707 } 708 spin_unlock_irqrestore(&h->lock, flags); 709 kfree(added); 710 } 711 712 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, 713 struct hpsa_scsi_dev_t *dev2) 714 { 715 /* we compare everything except lun and target as these 716 * are not yet assigned. Compare parts likely 717 * to differ first 718 */ 719 if (memcmp(dev1->scsi3addr, dev2->scsi3addr, 720 sizeof(dev1->scsi3addr)) != 0) 721 return 0; 722 if (memcmp(dev1->device_id, dev2->device_id, 723 sizeof(dev1->device_id)) != 0) 724 return 0; 725 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0) 726 return 0; 727 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0) 728 return 0; 729 if (dev1->devtype != dev2->devtype) 730 return 0; 731 if (dev1->bus != dev2->bus) 732 return 0; 733 return 1; 734 } 735 736 /* Find needle in haystack. If exact match found, return DEVICE_SAME, 737 * and return needle location in *index. If scsi3addr matches, but not 738 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle 739 * location in *index. If needle not found, return DEVICE_NOT_FOUND. 740 */ 741 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, 742 struct hpsa_scsi_dev_t *haystack[], int haystack_size, 743 int *index) 744 { 745 int i; 746 #define DEVICE_NOT_FOUND 0 747 #define DEVICE_CHANGED 1 748 #define DEVICE_SAME 2 749 for (i = 0; i < haystack_size; i++) { 750 if (haystack[i] == NULL) /* previously removed. */ 751 continue; 752 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { 753 *index = i; 754 if (device_is_the_same(needle, haystack[i])) 755 return DEVICE_SAME; 756 else 757 return DEVICE_CHANGED; 758 } 759 } 760 *index = -1; 761 return DEVICE_NOT_FOUND; 762 } 763 764 static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, 765 struct hpsa_scsi_dev_t *sd[], int nsds) 766 { 767 /* sd contains scsi3 addresses and devtypes, and inquiry 768 * data. This function takes what's in sd to be the current 769 * reality and updates h->dev[] to reflect that reality. 770 */ 771 int i, entry, device_change, changes = 0; 772 struct hpsa_scsi_dev_t *csd; 773 unsigned long flags; 774 struct hpsa_scsi_dev_t **added, **removed; 775 int nadded, nremoved; 776 struct Scsi_Host *sh = NULL; 777 778 added = kzalloc(sizeof(*added) * HPSA_MAX_SCSI_DEVS_PER_HBA, 779 GFP_KERNEL); 780 removed = kzalloc(sizeof(*removed) * HPSA_MAX_SCSI_DEVS_PER_HBA, 781 GFP_KERNEL); 782 783 if (!added || !removed) { 784 dev_warn(&h->pdev->dev, "out of memory in " 785 "adjust_hpsa_scsi_table\n"); 786 goto free_and_out; 787 } 788 789 spin_lock_irqsave(&h->devlock, flags); 790 791 /* find any devices in h->dev[] that are not in 792 * sd[] and remove them from h->dev[], and for any 793 * devices which have changed, remove the old device 794 * info and add the new device info. 795 */ 796 i = 0; 797 nremoved = 0; 798 nadded = 0; 799 while (i < h->ndevices) { 800 csd = h->dev[i]; 801 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); 802 if (device_change == DEVICE_NOT_FOUND) { 803 changes++; 804 hpsa_scsi_remove_entry(h, hostno, i, 805 removed, &nremoved); 806 continue; /* remove ^^^, hence i not incremented */ 807 } else if (device_change == DEVICE_CHANGED) { 808 changes++; 809 hpsa_scsi_replace_entry(h, hostno, i, sd[entry], 810 added, &nadded, removed, &nremoved); 811 /* Set it to NULL to prevent it from being freed 812 * at the bottom of hpsa_update_scsi_devices() 813 */ 814 sd[entry] = NULL; 815 } 816 i++; 817 } 818 819 /* Now, make sure every device listed in sd[] is also 820 * listed in h->dev[], adding them if they aren't found 821 */ 822 823 for (i = 0; i < nsds; i++) { 824 if (!sd[i]) /* if already added above. */ 825 continue; 826 device_change = hpsa_scsi_find_entry(sd[i], h->dev, 827 h->ndevices, &entry); 828 if (device_change == DEVICE_NOT_FOUND) { 829 changes++; 830 if (hpsa_scsi_add_entry(h, hostno, sd[i], 831 added, &nadded) != 0) 832 break; 833 sd[i] = NULL; /* prevent from being freed later. */ 834 } else if (device_change == DEVICE_CHANGED) { 835 /* should never happen... */ 836 changes++; 837 dev_warn(&h->pdev->dev, 838 "device unexpectedly changed.\n"); 839 /* but if it does happen, we just ignore that device */ 840 } 841 } 842 spin_unlock_irqrestore(&h->devlock, flags); 843 844 /* Don't notify scsi mid layer of any changes the first time through 845 * (or if there are no changes) scsi_scan_host will do it later the 846 * first time through. 847 */ 848 if (hostno == -1 || !changes) 849 goto free_and_out; 850 851 sh = h->scsi_host; 852 /* Notify scsi mid layer of any removed devices */ 853 for (i = 0; i < nremoved; i++) { 854 struct scsi_device *sdev = 855 scsi_device_lookup(sh, removed[i]->bus, 856 removed[i]->target, removed[i]->lun); 857 if (sdev != NULL) { 858 scsi_remove_device(sdev); 859 scsi_device_put(sdev); 860 } else { 861 /* We don't expect to get here. 862 * future cmds to this device will get selection 863 * timeout as if the device was gone. 864 */ 865 dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d " 866 " for removal.", hostno, removed[i]->bus, 867 removed[i]->target, removed[i]->lun); 868 } 869 kfree(removed[i]); 870 removed[i] = NULL; 871 } 872 873 /* Notify scsi mid layer of any added devices */ 874 for (i = 0; i < nadded; i++) { 875 if (scsi_add_device(sh, added[i]->bus, 876 added[i]->target, added[i]->lun) == 0) 877 continue; 878 dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, " 879 "device not added.\n", hostno, added[i]->bus, 880 added[i]->target, added[i]->lun); 881 /* now we have to remove it from h->dev, 882 * since it didn't get added to scsi mid layer 883 */ 884 fixup_botched_add(h, added[i]); 885 } 886 887 free_and_out: 888 kfree(added); 889 kfree(removed); 890 } 891 892 /* 893 * Lookup bus/target/lun and retrun corresponding struct hpsa_scsi_dev_t * 894 * Assume's h->devlock is held. 895 */ 896 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, 897 int bus, int target, int lun) 898 { 899 int i; 900 struct hpsa_scsi_dev_t *sd; 901 902 for (i = 0; i < h->ndevices; i++) { 903 sd = h->dev[i]; 904 if (sd->bus == bus && sd->target == target && sd->lun == lun) 905 return sd; 906 } 907 return NULL; 908 } 909 910 /* link sdev->hostdata to our per-device structure. */ 911 static int hpsa_slave_alloc(struct scsi_device *sdev) 912 { 913 struct hpsa_scsi_dev_t *sd; 914 unsigned long flags; 915 struct ctlr_info *h; 916 917 h = sdev_to_hba(sdev); 918 spin_lock_irqsave(&h->devlock, flags); 919 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), 920 sdev_id(sdev), sdev->lun); 921 if (sd != NULL) 922 sdev->hostdata = sd; 923 spin_unlock_irqrestore(&h->devlock, flags); 924 return 0; 925 } 926 927 static void hpsa_slave_destroy(struct scsi_device *sdev) 928 { 929 /* nothing to do. */ 930 } 931 932 static void hpsa_scsi_setup(struct ctlr_info *h) 933 { 934 h->ndevices = 0; 935 h->scsi_host = NULL; 936 spin_lock_init(&h->devlock); 937 } 938 939 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) 940 { 941 int i; 942 943 if (!h->cmd_sg_list) 944 return; 945 for (i = 0; i < h->nr_cmds; i++) { 946 kfree(h->cmd_sg_list[i]); 947 h->cmd_sg_list[i] = NULL; 948 } 949 kfree(h->cmd_sg_list); 950 h->cmd_sg_list = NULL; 951 } 952 953 static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h) 954 { 955 int i; 956 957 if (h->chainsize <= 0) 958 return 0; 959 960 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds, 961 GFP_KERNEL); 962 if (!h->cmd_sg_list) 963 return -ENOMEM; 964 for (i = 0; i < h->nr_cmds; i++) { 965 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) * 966 h->chainsize, GFP_KERNEL); 967 if (!h->cmd_sg_list[i]) 968 goto clean; 969 } 970 return 0; 971 972 clean: 973 hpsa_free_sg_chain_blocks(h); 974 return -ENOMEM; 975 } 976 977 static void hpsa_map_sg_chain_block(struct ctlr_info *h, 978 struct CommandList *c) 979 { 980 struct SGDescriptor *chain_sg, *chain_block; 981 u64 temp64; 982 983 chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; 984 chain_block = h->cmd_sg_list[c->cmdindex]; 985 chain_sg->Ext = HPSA_SG_CHAIN; 986 chain_sg->Len = sizeof(*chain_sg) * 987 (c->Header.SGTotal - h->max_cmd_sg_entries); 988 temp64 = pci_map_single(h->pdev, chain_block, chain_sg->Len, 989 PCI_DMA_TODEVICE); 990 chain_sg->Addr.lower = (u32) (temp64 & 0x0FFFFFFFFULL); 991 chain_sg->Addr.upper = (u32) ((temp64 >> 32) & 0x0FFFFFFFFULL); 992 } 993 994 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h, 995 struct CommandList *c) 996 { 997 struct SGDescriptor *chain_sg; 998 union u64bit temp64; 999 1000 if (c->Header.SGTotal <= h->max_cmd_sg_entries) 1001 return; 1002 1003 chain_sg = &c->SG[h->max_cmd_sg_entries - 1]; 1004 temp64.val32.lower = chain_sg->Addr.lower; 1005 temp64.val32.upper = chain_sg->Addr.upper; 1006 pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); 1007 } 1008 1009 static void complete_scsi_command(struct CommandList *cp) 1010 { 1011 struct scsi_cmnd *cmd; 1012 struct ctlr_info *h; 1013 struct ErrorInfo *ei; 1014 1015 unsigned char sense_key; 1016 unsigned char asc; /* additional sense code */ 1017 unsigned char ascq; /* additional sense code qualifier */ 1018 1019 ei = cp->err_info; 1020 cmd = (struct scsi_cmnd *) cp->scsi_cmd; 1021 h = cp->h; 1022 1023 scsi_dma_unmap(cmd); /* undo the DMA mappings */ 1024 if (cp->Header.SGTotal > h->max_cmd_sg_entries) 1025 hpsa_unmap_sg_chain_block(h, cp); 1026 1027 cmd->result = (DID_OK << 16); /* host byte */ 1028 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ 1029 cmd->result |= ei->ScsiStatus; 1030 1031 /* copy the sense data whether we need to or not. */ 1032 memcpy(cmd->sense_buffer, ei->SenseInfo, 1033 ei->SenseLen > SCSI_SENSE_BUFFERSIZE ? 1034 SCSI_SENSE_BUFFERSIZE : 1035 ei->SenseLen); 1036 scsi_set_resid(cmd, ei->ResidualCnt); 1037 1038 if (ei->CommandStatus == 0) { 1039 cmd->scsi_done(cmd); 1040 cmd_free(h, cp); 1041 return; 1042 } 1043 1044 /* an error has occurred */ 1045 switch (ei->CommandStatus) { 1046 1047 case CMD_TARGET_STATUS: 1048 if (ei->ScsiStatus) { 1049 /* Get sense key */ 1050 sense_key = 0xf & ei->SenseInfo[2]; 1051 /* Get additional sense code */ 1052 asc = ei->SenseInfo[12]; 1053 /* Get addition sense code qualifier */ 1054 ascq = ei->SenseInfo[13]; 1055 } 1056 1057 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { 1058 if (check_for_unit_attention(h, cp)) { 1059 cmd->result = DID_SOFT_ERROR << 16; 1060 break; 1061 } 1062 if (sense_key == ILLEGAL_REQUEST) { 1063 /* 1064 * SCSI REPORT_LUNS is commonly unsupported on 1065 * Smart Array. Suppress noisy complaint. 1066 */ 1067 if (cp->Request.CDB[0] == REPORT_LUNS) 1068 break; 1069 1070 /* If ASC/ASCQ indicate Logical Unit 1071 * Not Supported condition, 1072 */ 1073 if ((asc == 0x25) && (ascq == 0x0)) { 1074 dev_warn(&h->pdev->dev, "cp %p " 1075 "has check condition\n", cp); 1076 break; 1077 } 1078 } 1079 1080 if (sense_key == NOT_READY) { 1081 /* If Sense is Not Ready, Logical Unit 1082 * Not ready, Manual Intervention 1083 * required 1084 */ 1085 if ((asc == 0x04) && (ascq == 0x03)) { 1086 dev_warn(&h->pdev->dev, "cp %p " 1087 "has check condition: unit " 1088 "not ready, manual " 1089 "intervention required\n", cp); 1090 break; 1091 } 1092 } 1093 if (sense_key == ABORTED_COMMAND) { 1094 /* Aborted command is retryable */ 1095 dev_warn(&h->pdev->dev, "cp %p " 1096 "has check condition: aborted command: " 1097 "ASC: 0x%x, ASCQ: 0x%x\n", 1098 cp, asc, ascq); 1099 cmd->result = DID_SOFT_ERROR << 16; 1100 break; 1101 } 1102 /* Must be some other type of check condition */ 1103 dev_warn(&h->pdev->dev, "cp %p has check condition: " 1104 "unknown type: " 1105 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " 1106 "Returning result: 0x%x, " 1107 "cmd=[%02x %02x %02x %02x %02x " 1108 "%02x %02x %02x %02x %02x %02x " 1109 "%02x %02x %02x %02x %02x]\n", 1110 cp, sense_key, asc, ascq, 1111 cmd->result, 1112 cmd->cmnd[0], cmd->cmnd[1], 1113 cmd->cmnd[2], cmd->cmnd[3], 1114 cmd->cmnd[4], cmd->cmnd[5], 1115 cmd->cmnd[6], cmd->cmnd[7], 1116 cmd->cmnd[8], cmd->cmnd[9], 1117 cmd->cmnd[10], cmd->cmnd[11], 1118 cmd->cmnd[12], cmd->cmnd[13], 1119 cmd->cmnd[14], cmd->cmnd[15]); 1120 break; 1121 } 1122 1123 1124 /* Problem was not a check condition 1125 * Pass it up to the upper layers... 1126 */ 1127 if (ei->ScsiStatus) { 1128 dev_warn(&h->pdev->dev, "cp %p has status 0x%x " 1129 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, " 1130 "Returning result: 0x%x\n", 1131 cp, ei->ScsiStatus, 1132 sense_key, asc, ascq, 1133 cmd->result); 1134 } else { /* scsi status is zero??? How??? */ 1135 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. " 1136 "Returning no connection.\n", cp), 1137 1138 /* Ordinarily, this case should never happen, 1139 * but there is a bug in some released firmware 1140 * revisions that allows it to happen if, for 1141 * example, a 4100 backplane loses power and 1142 * the tape drive is in it. We assume that 1143 * it's a fatal error of some kind because we 1144 * can't show that it wasn't. We will make it 1145 * look like selection timeout since that is 1146 * the most common reason for this to occur, 1147 * and it's severe enough. 1148 */ 1149 1150 cmd->result = DID_NO_CONNECT << 16; 1151 } 1152 break; 1153 1154 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ 1155 break; 1156 case CMD_DATA_OVERRUN: 1157 dev_warn(&h->pdev->dev, "cp %p has" 1158 " completed with data overrun " 1159 "reported\n", cp); 1160 break; 1161 case CMD_INVALID: { 1162 /* print_bytes(cp, sizeof(*cp), 1, 0); 1163 print_cmd(cp); */ 1164 /* We get CMD_INVALID if you address a non-existent device 1165 * instead of a selection timeout (no response). You will 1166 * see this if you yank out a drive, then try to access it. 1167 * This is kind of a shame because it means that any other 1168 * CMD_INVALID (e.g. driver bug) will get interpreted as a 1169 * missing target. */ 1170 cmd->result = DID_NO_CONNECT << 16; 1171 } 1172 break; 1173 case CMD_PROTOCOL_ERR: 1174 dev_warn(&h->pdev->dev, "cp %p has " 1175 "protocol error \n", cp); 1176 break; 1177 case CMD_HARDWARE_ERR: 1178 cmd->result = DID_ERROR << 16; 1179 dev_warn(&h->pdev->dev, "cp %p had hardware error\n", cp); 1180 break; 1181 case CMD_CONNECTION_LOST: 1182 cmd->result = DID_ERROR << 16; 1183 dev_warn(&h->pdev->dev, "cp %p had connection lost\n", cp); 1184 break; 1185 case CMD_ABORTED: 1186 cmd->result = DID_ABORT << 16; 1187 dev_warn(&h->pdev->dev, "cp %p was aborted with status 0x%x\n", 1188 cp, ei->ScsiStatus); 1189 break; 1190 case CMD_ABORT_FAILED: 1191 cmd->result = DID_ERROR << 16; 1192 dev_warn(&h->pdev->dev, "cp %p reports abort failed\n", cp); 1193 break; 1194 case CMD_UNSOLICITED_ABORT: 1195 cmd->result = DID_RESET << 16; 1196 dev_warn(&h->pdev->dev, "cp %p aborted do to an unsolicited " 1197 "abort\n", cp); 1198 break; 1199 case CMD_TIMEOUT: 1200 cmd->result = DID_TIME_OUT << 16; 1201 dev_warn(&h->pdev->dev, "cp %p timedout\n", cp); 1202 break; 1203 case CMD_UNABORTABLE: 1204 cmd->result = DID_ERROR << 16; 1205 dev_warn(&h->pdev->dev, "Command unabortable\n"); 1206 break; 1207 default: 1208 cmd->result = DID_ERROR << 16; 1209 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", 1210 cp, ei->CommandStatus); 1211 } 1212 cmd->scsi_done(cmd); 1213 cmd_free(h, cp); 1214 } 1215 1216 static int hpsa_scsi_detect(struct ctlr_info *h) 1217 { 1218 struct Scsi_Host *sh; 1219 int error; 1220 1221 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); 1222 if (sh == NULL) 1223 goto fail; 1224 1225 sh->io_port = 0; 1226 sh->n_io_port = 0; 1227 sh->this_id = -1; 1228 sh->max_channel = 3; 1229 sh->max_cmd_len = MAX_COMMAND_SIZE; 1230 sh->max_lun = HPSA_MAX_LUN; 1231 sh->max_id = HPSA_MAX_LUN; 1232 sh->can_queue = h->nr_cmds; 1233 sh->cmd_per_lun = h->nr_cmds; 1234 sh->sg_tablesize = h->maxsgentries; 1235 h->scsi_host = sh; 1236 sh->hostdata[0] = (unsigned long) h; 1237 sh->irq = h->intr[h->intr_mode]; 1238 sh->unique_id = sh->irq; 1239 error = scsi_add_host(sh, &h->pdev->dev); 1240 if (error) 1241 goto fail_host_put; 1242 scsi_scan_host(sh); 1243 return 0; 1244 1245 fail_host_put: 1246 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_add_host" 1247 " failed for controller %d\n", h->ctlr); 1248 scsi_host_put(sh); 1249 return error; 1250 fail: 1251 dev_err(&h->pdev->dev, "hpsa_scsi_detect: scsi_host_alloc" 1252 " failed for controller %d\n", h->ctlr); 1253 return -ENOMEM; 1254 } 1255 1256 static void hpsa_pci_unmap(struct pci_dev *pdev, 1257 struct CommandList *c, int sg_used, int data_direction) 1258 { 1259 int i; 1260 union u64bit addr64; 1261 1262 for (i = 0; i < sg_used; i++) { 1263 addr64.val32.lower = c->SG[i].Addr.lower; 1264 addr64.val32.upper = c->SG[i].Addr.upper; 1265 pci_unmap_single(pdev, (dma_addr_t) addr64.val, c->SG[i].Len, 1266 data_direction); 1267 } 1268 } 1269 1270 static void hpsa_map_one(struct pci_dev *pdev, 1271 struct CommandList *cp, 1272 unsigned char *buf, 1273 size_t buflen, 1274 int data_direction) 1275 { 1276 u64 addr64; 1277 1278 if (buflen == 0 || data_direction == PCI_DMA_NONE) { 1279 cp->Header.SGList = 0; 1280 cp->Header.SGTotal = 0; 1281 return; 1282 } 1283 1284 addr64 = (u64) pci_map_single(pdev, buf, buflen, data_direction); 1285 cp->SG[0].Addr.lower = 1286 (u32) (addr64 & (u64) 0x00000000FFFFFFFF); 1287 cp->SG[0].Addr.upper = 1288 (u32) ((addr64 >> 32) & (u64) 0x00000000FFFFFFFF); 1289 cp->SG[0].Len = buflen; 1290 cp->Header.SGList = (u8) 1; /* no. SGs contig in this cmd */ 1291 cp->Header.SGTotal = (u16) 1; /* total sgs in this cmd list */ 1292 } 1293 1294 static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, 1295 struct CommandList *c) 1296 { 1297 DECLARE_COMPLETION_ONSTACK(wait); 1298 1299 c->waiting = &wait; 1300 enqueue_cmd_and_start_io(h, c); 1301 wait_for_completion(&wait); 1302 } 1303 1304 static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, 1305 struct CommandList *c, int data_direction) 1306 { 1307 int retry_count = 0; 1308 1309 do { 1310 memset(c->err_info, 0, sizeof(c->err_info)); 1311 hpsa_scsi_do_simple_cmd_core(h, c); 1312 retry_count++; 1313 } while (check_for_unit_attention(h, c) && retry_count <= 3); 1314 hpsa_pci_unmap(h->pdev, c, 1, data_direction); 1315 } 1316 1317 static void hpsa_scsi_interpret_error(struct CommandList *cp) 1318 { 1319 struct ErrorInfo *ei; 1320 struct device *d = &cp->h->pdev->dev; 1321 1322 ei = cp->err_info; 1323 switch (ei->CommandStatus) { 1324 case CMD_TARGET_STATUS: 1325 dev_warn(d, "cmd %p has completed with errors\n", cp); 1326 dev_warn(d, "cmd %p has SCSI Status = %x\n", cp, 1327 ei->ScsiStatus); 1328 if (ei->ScsiStatus == 0) 1329 dev_warn(d, "SCSI status is abnormally zero. " 1330 "(probably indicates selection timeout " 1331 "reported incorrectly due to a known " 1332 "firmware bug, circa July, 2001.)\n"); 1333 break; 1334 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ 1335 dev_info(d, "UNDERRUN\n"); 1336 break; 1337 case CMD_DATA_OVERRUN: 1338 dev_warn(d, "cp %p has completed with data overrun\n", cp); 1339 break; 1340 case CMD_INVALID: { 1341 /* controller unfortunately reports SCSI passthru's 1342 * to non-existent targets as invalid commands. 1343 */ 1344 dev_warn(d, "cp %p is reported invalid (probably means " 1345 "target device no longer present)\n", cp); 1346 /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0); 1347 print_cmd(cp); */ 1348 } 1349 break; 1350 case CMD_PROTOCOL_ERR: 1351 dev_warn(d, "cp %p has protocol error \n", cp); 1352 break; 1353 case CMD_HARDWARE_ERR: 1354 /* cmd->result = DID_ERROR << 16; */ 1355 dev_warn(d, "cp %p had hardware error\n", cp); 1356 break; 1357 case CMD_CONNECTION_LOST: 1358 dev_warn(d, "cp %p had connection lost\n", cp); 1359 break; 1360 case CMD_ABORTED: 1361 dev_warn(d, "cp %p was aborted\n", cp); 1362 break; 1363 case CMD_ABORT_FAILED: 1364 dev_warn(d, "cp %p reports abort failed\n", cp); 1365 break; 1366 case CMD_UNSOLICITED_ABORT: 1367 dev_warn(d, "cp %p aborted due to an unsolicited abort\n", cp); 1368 break; 1369 case CMD_TIMEOUT: 1370 dev_warn(d, "cp %p timed out\n", cp); 1371 break; 1372 case CMD_UNABORTABLE: 1373 dev_warn(d, "Command unabortable\n"); 1374 break; 1375 default: 1376 dev_warn(d, "cp %p returned unknown status %x\n", cp, 1377 ei->CommandStatus); 1378 } 1379 } 1380 1381 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, 1382 unsigned char page, unsigned char *buf, 1383 unsigned char bufsize) 1384 { 1385 int rc = IO_OK; 1386 struct CommandList *c; 1387 struct ErrorInfo *ei; 1388 1389 c = cmd_special_alloc(h); 1390 1391 if (c == NULL) { /* trouble... */ 1392 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); 1393 return -ENOMEM; 1394 } 1395 1396 fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD); 1397 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); 1398 ei = c->err_info; 1399 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { 1400 hpsa_scsi_interpret_error(c); 1401 rc = -1; 1402 } 1403 cmd_special_free(h, c); 1404 return rc; 1405 } 1406 1407 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr) 1408 { 1409 int rc = IO_OK; 1410 struct CommandList *c; 1411 struct ErrorInfo *ei; 1412 1413 c = cmd_special_alloc(h); 1414 1415 if (c == NULL) { /* trouble... */ 1416 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); 1417 return -ENOMEM; 1418 } 1419 1420 fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, scsi3addr, TYPE_MSG); 1421 hpsa_scsi_do_simple_cmd_core(h, c); 1422 /* no unmap needed here because no data xfer. */ 1423 1424 ei = c->err_info; 1425 if (ei->CommandStatus != 0) { 1426 hpsa_scsi_interpret_error(c); 1427 rc = -1; 1428 } 1429 cmd_special_free(h, c); 1430 return rc; 1431 } 1432 1433 static void hpsa_get_raid_level(struct ctlr_info *h, 1434 unsigned char *scsi3addr, unsigned char *raid_level) 1435 { 1436 int rc; 1437 unsigned char *buf; 1438 1439 *raid_level = RAID_UNKNOWN; 1440 buf = kzalloc(64, GFP_KERNEL); 1441 if (!buf) 1442 return; 1443 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0xC1, buf, 64); 1444 if (rc == 0) 1445 *raid_level = buf[8]; 1446 if (*raid_level > RAID_UNKNOWN) 1447 *raid_level = RAID_UNKNOWN; 1448 kfree(buf); 1449 return; 1450 } 1451 1452 /* Get the device id from inquiry page 0x83 */ 1453 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, 1454 unsigned char *device_id, int buflen) 1455 { 1456 int rc; 1457 unsigned char *buf; 1458 1459 if (buflen > 16) 1460 buflen = 16; 1461 buf = kzalloc(64, GFP_KERNEL); 1462 if (!buf) 1463 return -1; 1464 rc = hpsa_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64); 1465 if (rc == 0) 1466 memcpy(device_id, &buf[8], buflen); 1467 kfree(buf); 1468 return rc != 0; 1469 } 1470 1471 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, 1472 struct ReportLUNdata *buf, int bufsize, 1473 int extended_response) 1474 { 1475 int rc = IO_OK; 1476 struct CommandList *c; 1477 unsigned char scsi3addr[8]; 1478 struct ErrorInfo *ei; 1479 1480 c = cmd_special_alloc(h); 1481 if (c == NULL) { /* trouble... */ 1482 dev_err(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); 1483 return -1; 1484 } 1485 /* address the controller */ 1486 memset(scsi3addr, 0, sizeof(scsi3addr)); 1487 fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, 1488 buf, bufsize, 0, scsi3addr, TYPE_CMD); 1489 if (extended_response) 1490 c->Request.CDB[1] = extended_response; 1491 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); 1492 ei = c->err_info; 1493 if (ei->CommandStatus != 0 && 1494 ei->CommandStatus != CMD_DATA_UNDERRUN) { 1495 hpsa_scsi_interpret_error(c); 1496 rc = -1; 1497 } 1498 cmd_special_free(h, c); 1499 return rc; 1500 } 1501 1502 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, 1503 struct ReportLUNdata *buf, 1504 int bufsize, int extended_response) 1505 { 1506 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize, extended_response); 1507 } 1508 1509 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h, 1510 struct ReportLUNdata *buf, int bufsize) 1511 { 1512 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0); 1513 } 1514 1515 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device, 1516 int bus, int target, int lun) 1517 { 1518 device->bus = bus; 1519 device->target = target; 1520 device->lun = lun; 1521 } 1522 1523 static int hpsa_update_device_info(struct ctlr_info *h, 1524 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device) 1525 { 1526 #define OBDR_TAPE_INQ_SIZE 49 1527 unsigned char *inq_buff; 1528 1529 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); 1530 if (!inq_buff) 1531 goto bail_out; 1532 1533 /* Do an inquiry to the device to see what it is. */ 1534 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, 1535 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) { 1536 /* Inquiry failed (msg printed already) */ 1537 dev_err(&h->pdev->dev, 1538 "hpsa_update_device_info: inquiry failed\n"); 1539 goto bail_out; 1540 } 1541 1542 this_device->devtype = (inq_buff[0] & 0x1f); 1543 memcpy(this_device->scsi3addr, scsi3addr, 8); 1544 memcpy(this_device->vendor, &inq_buff[8], 1545 sizeof(this_device->vendor)); 1546 memcpy(this_device->model, &inq_buff[16], 1547 sizeof(this_device->model)); 1548 memset(this_device->device_id, 0, 1549 sizeof(this_device->device_id)); 1550 hpsa_get_device_id(h, scsi3addr, this_device->device_id, 1551 sizeof(this_device->device_id)); 1552 1553 if (this_device->devtype == TYPE_DISK && 1554 is_logical_dev_addr_mode(scsi3addr)) 1555 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level); 1556 else 1557 this_device->raid_level = RAID_UNKNOWN; 1558 1559 kfree(inq_buff); 1560 return 0; 1561 1562 bail_out: 1563 kfree(inq_buff); 1564 return 1; 1565 } 1566 1567 static unsigned char *msa2xxx_model[] = { 1568 "MSA2012", 1569 "MSA2024", 1570 "MSA2312", 1571 "MSA2324", 1572 NULL, 1573 }; 1574 1575 static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) 1576 { 1577 int i; 1578 1579 for (i = 0; msa2xxx_model[i]; i++) 1580 if (strncmp(device->model, msa2xxx_model[i], 1581 strlen(msa2xxx_model[i])) == 0) 1582 return 1; 1583 return 0; 1584 } 1585 1586 /* Helper function to assign bus, target, lun mapping of devices. 1587 * Puts non-msa2xxx logical volumes on bus 0, msa2xxx logical 1588 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3. 1589 * Logical drive target and lun are assigned at this time, but 1590 * physical device lun and target assignment are deferred (assigned 1591 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) 1592 */ 1593 static void figure_bus_target_lun(struct ctlr_info *h, 1594 u8 *lunaddrbytes, int *bus, int *target, int *lun, 1595 struct hpsa_scsi_dev_t *device) 1596 { 1597 u32 lunid; 1598 1599 if (is_logical_dev_addr_mode(lunaddrbytes)) { 1600 /* logical device */ 1601 if (unlikely(is_scsi_rev_5(h))) { 1602 /* p1210m, logical drives lun assignments 1603 * match SCSI REPORT LUNS data. 1604 */ 1605 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); 1606 *bus = 0; 1607 *target = 0; 1608 *lun = (lunid & 0x3fff) + 1; 1609 } else { 1610 /* not p1210m... */ 1611 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); 1612 if (is_msa2xxx(h, device)) { 1613 /* msa2xxx way, put logicals on bus 1 1614 * and match target/lun numbers box 1615 * reports. 1616 */ 1617 *bus = 1; 1618 *target = (lunid >> 16) & 0x3fff; 1619 *lun = lunid & 0x00ff; 1620 } else { 1621 /* Traditional smart array way. */ 1622 *bus = 0; 1623 *lun = 0; 1624 *target = lunid & 0x3fff; 1625 } 1626 } 1627 } else { 1628 /* physical device */ 1629 if (is_hba_lunid(lunaddrbytes)) 1630 if (unlikely(is_scsi_rev_5(h))) { 1631 *bus = 0; /* put p1210m ctlr at 0,0,0 */ 1632 *target = 0; 1633 *lun = 0; 1634 return; 1635 } else 1636 *bus = 3; /* traditional smartarray */ 1637 else 1638 *bus = 2; /* physical disk */ 1639 *target = -1; 1640 *lun = -1; /* we will fill these in later. */ 1641 } 1642 } 1643 1644 /* 1645 * If there is no lun 0 on a target, linux won't find any devices. 1646 * For the MSA2xxx boxes, we have to manually detect the enclosure 1647 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report 1648 * it for some reason. *tmpdevice is the target we're adding, 1649 * this_device is a pointer into the current element of currentsd[] 1650 * that we're building up in update_scsi_devices(), below. 1651 * lunzerobits is a bitmap that tracks which targets already have a 1652 * lun 0 assigned. 1653 * Returns 1 if an enclosure was added, 0 if not. 1654 */ 1655 static int add_msa2xxx_enclosure_device(struct ctlr_info *h, 1656 struct hpsa_scsi_dev_t *tmpdevice, 1657 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes, 1658 int bus, int target, int lun, unsigned long lunzerobits[], 1659 int *nmsa2xxx_enclosures) 1660 { 1661 unsigned char scsi3addr[8]; 1662 1663 if (test_bit(target, lunzerobits)) 1664 return 0; /* There is already a lun 0 on this target. */ 1665 1666 if (!is_logical_dev_addr_mode(lunaddrbytes)) 1667 return 0; /* It's the logical targets that may lack lun 0. */ 1668 1669 if (!is_msa2xxx(h, tmpdevice)) 1670 return 0; /* It's only the MSA2xxx that have this problem. */ 1671 1672 if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */ 1673 return 0; 1674 1675 memset(scsi3addr, 0, 8); 1676 scsi3addr[3] = target; 1677 if (is_hba_lunid(scsi3addr)) 1678 return 0; /* Don't add the RAID controller here. */ 1679 1680 if (is_scsi_rev_5(h)) 1681 return 0; /* p1210m doesn't need to do this. */ 1682 1683 #define MAX_MSA2XXX_ENCLOSURES 32 1684 if (*nmsa2xxx_enclosures >= MAX_MSA2XXX_ENCLOSURES) { 1685 dev_warn(&h->pdev->dev, "Maximum number of MSA2XXX " 1686 "enclosures exceeded. Check your hardware " 1687 "configuration."); 1688 return 0; 1689 } 1690 1691 if (hpsa_update_device_info(h, scsi3addr, this_device)) 1692 return 0; 1693 (*nmsa2xxx_enclosures)++; 1694 hpsa_set_bus_target_lun(this_device, bus, target, 0); 1695 set_bit(target, lunzerobits); 1696 return 1; 1697 } 1698 1699 /* 1700 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, 1701 * logdev. The number of luns in physdev and logdev are returned in 1702 * *nphysicals and *nlogicals, respectively. 1703 * Returns 0 on success, -1 otherwise. 1704 */ 1705 static int hpsa_gather_lun_info(struct ctlr_info *h, 1706 int reportlunsize, 1707 struct ReportLUNdata *physdev, u32 *nphysicals, 1708 struct ReportLUNdata *logdev, u32 *nlogicals) 1709 { 1710 if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) { 1711 dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); 1712 return -1; 1713 } 1714 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8; 1715 if (*nphysicals > HPSA_MAX_PHYS_LUN) { 1716 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded." 1717 " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, 1718 *nphysicals - HPSA_MAX_PHYS_LUN); 1719 *nphysicals = HPSA_MAX_PHYS_LUN; 1720 } 1721 if (hpsa_scsi_do_report_log_luns(h, logdev, reportlunsize)) { 1722 dev_err(&h->pdev->dev, "report logical LUNs failed.\n"); 1723 return -1; 1724 } 1725 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8; 1726 /* Reject Logicals in excess of our max capability. */ 1727 if (*nlogicals > HPSA_MAX_LUN) { 1728 dev_warn(&h->pdev->dev, 1729 "maximum logical LUNs (%d) exceeded. " 1730 "%d LUNs ignored.\n", HPSA_MAX_LUN, 1731 *nlogicals - HPSA_MAX_LUN); 1732 *nlogicals = HPSA_MAX_LUN; 1733 } 1734 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) { 1735 dev_warn(&h->pdev->dev, 1736 "maximum logical + physical LUNs (%d) exceeded. " 1737 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, 1738 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN); 1739 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals; 1740 } 1741 return 0; 1742 } 1743 1744 u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i, 1745 int nphysicals, int nlogicals, struct ReportLUNdata *physdev_list, 1746 struct ReportLUNdata *logdev_list) 1747 { 1748 /* Helper function, figure out where the LUN ID info is coming from 1749 * given index i, lists of physical and logical devices, where in 1750 * the list the raid controller is supposed to appear (first or last) 1751 */ 1752 1753 int logicals_start = nphysicals + (raid_ctlr_position == 0); 1754 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0); 1755 1756 if (i == raid_ctlr_position) 1757 return RAID_CTLR_LUNID; 1758 1759 if (i < logicals_start) 1760 return &physdev_list->LUN[i - (raid_ctlr_position == 0)][0]; 1761 1762 if (i < last_device) 1763 return &logdev_list->LUN[i - nphysicals - 1764 (raid_ctlr_position == 0)][0]; 1765 BUG(); 1766 return NULL; 1767 } 1768 1769 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) 1770 { 1771 /* the idea here is we could get notified 1772 * that some devices have changed, so we do a report 1773 * physical luns and report logical luns cmd, and adjust 1774 * our list of devices accordingly. 1775 * 1776 * The scsi3addr's of devices won't change so long as the 1777 * adapter is not reset. That means we can rescan and 1778 * tell which devices we already know about, vs. new 1779 * devices, vs. disappearing devices. 1780 */ 1781 struct ReportLUNdata *physdev_list = NULL; 1782 struct ReportLUNdata *logdev_list = NULL; 1783 unsigned char *inq_buff = NULL; 1784 u32 nphysicals = 0; 1785 u32 nlogicals = 0; 1786 u32 ndev_allocated = 0; 1787 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; 1788 int ncurrent = 0; 1789 int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8; 1790 int i, nmsa2xxx_enclosures, ndevs_to_allocate; 1791 int bus, target, lun; 1792 int raid_ctlr_position; 1793 DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR); 1794 1795 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_SCSI_DEVS_PER_HBA, 1796 GFP_KERNEL); 1797 physdev_list = kzalloc(reportlunsize, GFP_KERNEL); 1798 logdev_list = kzalloc(reportlunsize, GFP_KERNEL); 1799 inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); 1800 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); 1801 1802 if (!currentsd || !physdev_list || !logdev_list || 1803 !inq_buff || !tmpdevice) { 1804 dev_err(&h->pdev->dev, "out of memory\n"); 1805 goto out; 1806 } 1807 memset(lunzerobits, 0, sizeof(lunzerobits)); 1808 1809 if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals, 1810 logdev_list, &nlogicals)) 1811 goto out; 1812 1813 /* We might see up to 32 MSA2xxx enclosures, actually 8 of them 1814 * but each of them 4 times through different paths. The plus 1 1815 * is for the RAID controller. 1816 */ 1817 ndevs_to_allocate = nphysicals + nlogicals + MAX_MSA2XXX_ENCLOSURES + 1; 1818 1819 /* Allocate the per device structures */ 1820 for (i = 0; i < ndevs_to_allocate; i++) { 1821 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL); 1822 if (!currentsd[i]) { 1823 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n", 1824 __FILE__, __LINE__); 1825 goto out; 1826 } 1827 ndev_allocated++; 1828 } 1829 1830 if (unlikely(is_scsi_rev_5(h))) 1831 raid_ctlr_position = 0; 1832 else 1833 raid_ctlr_position = nphysicals + nlogicals; 1834 1835 /* adjust our table of devices */ 1836 nmsa2xxx_enclosures = 0; 1837 for (i = 0; i < nphysicals + nlogicals + 1; i++) { 1838 u8 *lunaddrbytes; 1839 1840 /* Figure out where the LUN ID info is coming from */ 1841 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, 1842 i, nphysicals, nlogicals, physdev_list, logdev_list); 1843 /* skip masked physical devices. */ 1844 if (lunaddrbytes[3] & 0xC0 && 1845 i < nphysicals + (raid_ctlr_position == 0)) 1846 continue; 1847 1848 /* Get device type, vendor, model, device id */ 1849 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice)) 1850 continue; /* skip it if we can't talk to it. */ 1851 figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun, 1852 tmpdevice); 1853 this_device = currentsd[ncurrent]; 1854 1855 /* 1856 * For the msa2xxx boxes, we have to insert a LUN 0 which 1857 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there 1858 * is nonetheless an enclosure device there. We have to 1859 * present that otherwise linux won't find anything if 1860 * there is no lun 0. 1861 */ 1862 if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device, 1863 lunaddrbytes, bus, target, lun, lunzerobits, 1864 &nmsa2xxx_enclosures)) { 1865 ncurrent++; 1866 this_device = currentsd[ncurrent]; 1867 } 1868 1869 *this_device = *tmpdevice; 1870 hpsa_set_bus_target_lun(this_device, bus, target, lun); 1871 1872 switch (this_device->devtype) { 1873 case TYPE_ROM: { 1874 /* We don't *really* support actual CD-ROM devices, 1875 * just "One Button Disaster Recovery" tape drive 1876 * which temporarily pretends to be a CD-ROM drive. 1877 * So we check that the device is really an OBDR tape 1878 * device by checking for "$DR-10" in bytes 43-48 of 1879 * the inquiry data. 1880 */ 1881 char obdr_sig[7]; 1882 #define OBDR_TAPE_SIG "$DR-10" 1883 strncpy(obdr_sig, &inq_buff[43], 6); 1884 obdr_sig[6] = '\0'; 1885 if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0) 1886 /* Not OBDR device, ignore it. */ 1887 break; 1888 } 1889 ncurrent++; 1890 break; 1891 case TYPE_DISK: 1892 if (i < nphysicals) 1893 break; 1894 ncurrent++; 1895 break; 1896 case TYPE_TAPE: 1897 case TYPE_MEDIUM_CHANGER: 1898 ncurrent++; 1899 break; 1900 case TYPE_RAID: 1901 /* Only present the Smartarray HBA as a RAID controller. 1902 * If it's a RAID controller other than the HBA itself 1903 * (an external RAID controller, MSA500 or similar) 1904 * don't present it. 1905 */ 1906 if (!is_hba_lunid(lunaddrbytes)) 1907 break; 1908 ncurrent++; 1909 break; 1910 default: 1911 break; 1912 } 1913 if (ncurrent >= HPSA_MAX_SCSI_DEVS_PER_HBA) 1914 break; 1915 } 1916 adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent); 1917 out: 1918 kfree(tmpdevice); 1919 for (i = 0; i < ndev_allocated; i++) 1920 kfree(currentsd[i]); 1921 kfree(currentsd); 1922 kfree(inq_buff); 1923 kfree(physdev_list); 1924 kfree(logdev_list); 1925 } 1926 1927 /* hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci 1928 * dma mapping and fills in the scatter gather entries of the 1929 * hpsa command, cp. 1930 */ 1931 static int hpsa_scatter_gather(struct ctlr_info *h, 1932 struct CommandList *cp, 1933 struct scsi_cmnd *cmd) 1934 { 1935 unsigned int len; 1936 struct scatterlist *sg; 1937 u64 addr64; 1938 int use_sg, i, sg_index, chained; 1939 struct SGDescriptor *curr_sg; 1940 1941 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); 1942 1943 use_sg = scsi_dma_map(cmd); 1944 if (use_sg < 0) 1945 return use_sg; 1946 1947 if (!use_sg) 1948 goto sglist_finished; 1949 1950 curr_sg = cp->SG; 1951 chained = 0; 1952 sg_index = 0; 1953 scsi_for_each_sg(cmd, sg, use_sg, i) { 1954 if (i == h->max_cmd_sg_entries - 1 && 1955 use_sg > h->max_cmd_sg_entries) { 1956 chained = 1; 1957 curr_sg = h->cmd_sg_list[cp->cmdindex]; 1958 sg_index = 0; 1959 } 1960 addr64 = (u64) sg_dma_address(sg); 1961 len = sg_dma_len(sg); 1962 curr_sg->Addr.lower = (u32) (addr64 & 0x0FFFFFFFFULL); 1963 curr_sg->Addr.upper = (u32) ((addr64 >> 32) & 0x0FFFFFFFFULL); 1964 curr_sg->Len = len; 1965 curr_sg->Ext = 0; /* we are not chaining */ 1966 curr_sg++; 1967 } 1968 1969 if (use_sg + chained > h->maxSG) 1970 h->maxSG = use_sg + chained; 1971 1972 if (chained) { 1973 cp->Header.SGList = h->max_cmd_sg_entries; 1974 cp->Header.SGTotal = (u16) (use_sg + 1); 1975 hpsa_map_sg_chain_block(h, cp); 1976 return 0; 1977 } 1978 1979 sglist_finished: 1980 1981 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */ 1982 cp->Header.SGTotal = (u16) use_sg; /* total sgs in this cmd list */ 1983 return 0; 1984 } 1985 1986 1987 static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd, 1988 void (*done)(struct scsi_cmnd *)) 1989 { 1990 struct ctlr_info *h; 1991 struct hpsa_scsi_dev_t *dev; 1992 unsigned char scsi3addr[8]; 1993 struct CommandList *c; 1994 unsigned long flags; 1995 1996 /* Get the ptr to our adapter structure out of cmd->host. */ 1997 h = sdev_to_hba(cmd->device); 1998 dev = cmd->device->hostdata; 1999 if (!dev) { 2000 cmd->result = DID_NO_CONNECT << 16; 2001 done(cmd); 2002 return 0; 2003 } 2004 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr)); 2005 2006 /* Need a lock as this is being allocated from the pool */ 2007 spin_lock_irqsave(&h->lock, flags); 2008 c = cmd_alloc(h); 2009 spin_unlock_irqrestore(&h->lock, flags); 2010 if (c == NULL) { /* trouble... */ 2011 dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n"); 2012 return SCSI_MLQUEUE_HOST_BUSY; 2013 } 2014 2015 /* Fill in the command list header */ 2016 2017 cmd->scsi_done = done; /* save this for use by completion code */ 2018 2019 /* save c in case we have to abort it */ 2020 cmd->host_scribble = (unsigned char *) c; 2021 2022 c->cmd_type = CMD_SCSI; 2023 c->scsi_cmd = cmd; 2024 c->Header.ReplyQueue = 0; /* unused in simple mode */ 2025 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); 2026 c->Header.Tag.lower = (c->cmdindex << DIRECT_LOOKUP_SHIFT); 2027 c->Header.Tag.lower |= DIRECT_LOOKUP_BIT; 2028 2029 /* Fill in the request block... */ 2030 2031 c->Request.Timeout = 0; 2032 memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); 2033 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); 2034 c->Request.CDBLen = cmd->cmd_len; 2035 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); 2036 c->Request.Type.Type = TYPE_CMD; 2037 c->Request.Type.Attribute = ATTR_SIMPLE; 2038 switch (cmd->sc_data_direction) { 2039 case DMA_TO_DEVICE: 2040 c->Request.Type.Direction = XFER_WRITE; 2041 break; 2042 case DMA_FROM_DEVICE: 2043 c->Request.Type.Direction = XFER_READ; 2044 break; 2045 case DMA_NONE: 2046 c->Request.Type.Direction = XFER_NONE; 2047 break; 2048 case DMA_BIDIRECTIONAL: 2049 /* This can happen if a buggy application does a scsi passthru 2050 * and sets both inlen and outlen to non-zero. ( see 2051 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) 2052 */ 2053 2054 c->Request.Type.Direction = XFER_RSVD; 2055 /* This is technically wrong, and hpsa controllers should 2056 * reject it with CMD_INVALID, which is the most correct 2057 * response, but non-fibre backends appear to let it 2058 * slide by, and give the same results as if this field 2059 * were set correctly. Either way is acceptable for 2060 * our purposes here. 2061 */ 2062 2063 break; 2064 2065 default: 2066 dev_err(&h->pdev->dev, "unknown data direction: %d\n", 2067 cmd->sc_data_direction); 2068 BUG(); 2069 break; 2070 } 2071 2072 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */ 2073 cmd_free(h, c); 2074 return SCSI_MLQUEUE_HOST_BUSY; 2075 } 2076 enqueue_cmd_and_start_io(h, c); 2077 /* the cmd'll come back via intr handler in complete_scsi_command() */ 2078 return 0; 2079 } 2080 2081 static DEF_SCSI_QCMD(hpsa_scsi_queue_command) 2082 2083 static void hpsa_scan_start(struct Scsi_Host *sh) 2084 { 2085 struct ctlr_info *h = shost_to_hba(sh); 2086 unsigned long flags; 2087 2088 /* wait until any scan already in progress is finished. */ 2089 while (1) { 2090 spin_lock_irqsave(&h->scan_lock, flags); 2091 if (h->scan_finished) 2092 break; 2093 spin_unlock_irqrestore(&h->scan_lock, flags); 2094 wait_event(h->scan_wait_queue, h->scan_finished); 2095 /* Note: We don't need to worry about a race between this 2096 * thread and driver unload because the midlayer will 2097 * have incremented the reference count, so unload won't 2098 * happen if we're in here. 2099 */ 2100 } 2101 h->scan_finished = 0; /* mark scan as in progress */ 2102 spin_unlock_irqrestore(&h->scan_lock, flags); 2103 2104 hpsa_update_scsi_devices(h, h->scsi_host->host_no); 2105 2106 spin_lock_irqsave(&h->scan_lock, flags); 2107 h->scan_finished = 1; /* mark scan as finished. */ 2108 wake_up_all(&h->scan_wait_queue); 2109 spin_unlock_irqrestore(&h->scan_lock, flags); 2110 } 2111 2112 static int hpsa_scan_finished(struct Scsi_Host *sh, 2113 unsigned long elapsed_time) 2114 { 2115 struct ctlr_info *h = shost_to_hba(sh); 2116 unsigned long flags; 2117 int finished; 2118 2119 spin_lock_irqsave(&h->scan_lock, flags); 2120 finished = h->scan_finished; 2121 spin_unlock_irqrestore(&h->scan_lock, flags); 2122 return finished; 2123 } 2124 2125 static int hpsa_change_queue_depth(struct scsi_device *sdev, 2126 int qdepth, int reason) 2127 { 2128 struct ctlr_info *h = sdev_to_hba(sdev); 2129 2130 if (reason != SCSI_QDEPTH_DEFAULT) 2131 return -ENOTSUPP; 2132 2133 if (qdepth < 1) 2134 qdepth = 1; 2135 else 2136 if (qdepth > h->nr_cmds) 2137 qdepth = h->nr_cmds; 2138 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); 2139 return sdev->queue_depth; 2140 } 2141 2142 static void hpsa_unregister_scsi(struct ctlr_info *h) 2143 { 2144 /* we are being forcibly unloaded, and may not refuse. */ 2145 scsi_remove_host(h->scsi_host); 2146 scsi_host_put(h->scsi_host); 2147 h->scsi_host = NULL; 2148 } 2149 2150 static int hpsa_register_scsi(struct ctlr_info *h) 2151 { 2152 int rc; 2153 2154 rc = hpsa_scsi_detect(h); 2155 if (rc != 0) 2156 dev_err(&h->pdev->dev, "hpsa_register_scsi: failed" 2157 " hpsa_scsi_detect(), rc is %d\n", rc); 2158 return rc; 2159 } 2160 2161 static int wait_for_device_to_become_ready(struct ctlr_info *h, 2162 unsigned char lunaddr[]) 2163 { 2164 int rc = 0; 2165 int count = 0; 2166 int waittime = 1; /* seconds */ 2167 struct CommandList *c; 2168 2169 c = cmd_special_alloc(h); 2170 if (!c) { 2171 dev_warn(&h->pdev->dev, "out of memory in " 2172 "wait_for_device_to_become_ready.\n"); 2173 return IO_ERROR; 2174 } 2175 2176 /* Send test unit ready until device ready, or give up. */ 2177 while (count < HPSA_TUR_RETRY_LIMIT) { 2178 2179 /* Wait for a bit. do this first, because if we send 2180 * the TUR right away, the reset will just abort it. 2181 */ 2182 msleep(1000 * waittime); 2183 count++; 2184 2185 /* Increase wait time with each try, up to a point. */ 2186 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) 2187 waittime = waittime * 2; 2188 2189 /* Send the Test Unit Ready */ 2190 fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, lunaddr, TYPE_CMD); 2191 hpsa_scsi_do_simple_cmd_core(h, c); 2192 /* no unmap needed here because no data xfer. */ 2193 2194 if (c->err_info->CommandStatus == CMD_SUCCESS) 2195 break; 2196 2197 if (c->err_info->CommandStatus == CMD_TARGET_STATUS && 2198 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && 2199 (c->err_info->SenseInfo[2] == NO_SENSE || 2200 c->err_info->SenseInfo[2] == UNIT_ATTENTION)) 2201 break; 2202 2203 dev_warn(&h->pdev->dev, "waiting %d secs " 2204 "for device to become ready.\n", waittime); 2205 rc = 1; /* device not ready. */ 2206 } 2207 2208 if (rc) 2209 dev_warn(&h->pdev->dev, "giving up on device.\n"); 2210 else 2211 dev_warn(&h->pdev->dev, "device is ready.\n"); 2212 2213 cmd_special_free(h, c); 2214 return rc; 2215 } 2216 2217 /* Need at least one of these error handlers to keep ../scsi/hosts.c from 2218 * complaining. Doing a host- or bus-reset can't do anything good here. 2219 */ 2220 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) 2221 { 2222 int rc; 2223 struct ctlr_info *h; 2224 struct hpsa_scsi_dev_t *dev; 2225 2226 /* find the controller to which the command to be aborted was sent */ 2227 h = sdev_to_hba(scsicmd->device); 2228 if (h == NULL) /* paranoia */ 2229 return FAILED; 2230 dev = scsicmd->device->hostdata; 2231 if (!dev) { 2232 dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: " 2233 "device lookup failed.\n"); 2234 return FAILED; 2235 } 2236 dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n", 2237 h->scsi_host->host_no, dev->bus, dev->target, dev->lun); 2238 /* send a reset to the SCSI LUN which the command was sent to */ 2239 rc = hpsa_send_reset(h, dev->scsi3addr); 2240 if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0) 2241 return SUCCESS; 2242 2243 dev_warn(&h->pdev->dev, "resetting device failed.\n"); 2244 return FAILED; 2245 } 2246 2247 /* 2248 * For operations that cannot sleep, a command block is allocated at init, 2249 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track 2250 * which ones are free or in use. Lock must be held when calling this. 2251 * cmd_free() is the complement. 2252 */ 2253 static struct CommandList *cmd_alloc(struct ctlr_info *h) 2254 { 2255 struct CommandList *c; 2256 int i; 2257 union u64bit temp64; 2258 dma_addr_t cmd_dma_handle, err_dma_handle; 2259 2260 do { 2261 i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); 2262 if (i == h->nr_cmds) 2263 return NULL; 2264 } while (test_and_set_bit 2265 (i & (BITS_PER_LONG - 1), 2266 h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); 2267 c = h->cmd_pool + i; 2268 memset(c, 0, sizeof(*c)); 2269 cmd_dma_handle = h->cmd_pool_dhandle 2270 + i * sizeof(*c); 2271 c->err_info = h->errinfo_pool + i; 2272 memset(c->err_info, 0, sizeof(*c->err_info)); 2273 err_dma_handle = h->errinfo_pool_dhandle 2274 + i * sizeof(*c->err_info); 2275 h->nr_allocs++; 2276 2277 c->cmdindex = i; 2278 2279 INIT_LIST_HEAD(&c->list); 2280 c->busaddr = (u32) cmd_dma_handle; 2281 temp64.val = (u64) err_dma_handle; 2282 c->ErrDesc.Addr.lower = temp64.val32.lower; 2283 c->ErrDesc.Addr.upper = temp64.val32.upper; 2284 c->ErrDesc.Len = sizeof(*c->err_info); 2285 2286 c->h = h; 2287 return c; 2288 } 2289 2290 /* For operations that can wait for kmalloc to possibly sleep, 2291 * this routine can be called. Lock need not be held to call 2292 * cmd_special_alloc. cmd_special_free() is the complement. 2293 */ 2294 static struct CommandList *cmd_special_alloc(struct ctlr_info *h) 2295 { 2296 struct CommandList *c; 2297 union u64bit temp64; 2298 dma_addr_t cmd_dma_handle, err_dma_handle; 2299 2300 c = pci_alloc_consistent(h->pdev, sizeof(*c), &cmd_dma_handle); 2301 if (c == NULL) 2302 return NULL; 2303 memset(c, 0, sizeof(*c)); 2304 2305 c->cmdindex = -1; 2306 2307 c->err_info = pci_alloc_consistent(h->pdev, sizeof(*c->err_info), 2308 &err_dma_handle); 2309 2310 if (c->err_info == NULL) { 2311 pci_free_consistent(h->pdev, 2312 sizeof(*c), c, cmd_dma_handle); 2313 return NULL; 2314 } 2315 memset(c->err_info, 0, sizeof(*c->err_info)); 2316 2317 INIT_LIST_HEAD(&c->list); 2318 c->busaddr = (u32) cmd_dma_handle; 2319 temp64.val = (u64) err_dma_handle; 2320 c->ErrDesc.Addr.lower = temp64.val32.lower; 2321 c->ErrDesc.Addr.upper = temp64.val32.upper; 2322 c->ErrDesc.Len = sizeof(*c->err_info); 2323 2324 c->h = h; 2325 return c; 2326 } 2327 2328 static void cmd_free(struct ctlr_info *h, struct CommandList *c) 2329 { 2330 int i; 2331 2332 i = c - h->cmd_pool; 2333 clear_bit(i & (BITS_PER_LONG - 1), 2334 h->cmd_pool_bits + (i / BITS_PER_LONG)); 2335 h->nr_frees++; 2336 } 2337 2338 static void cmd_special_free(struct ctlr_info *h, struct CommandList *c) 2339 { 2340 union u64bit temp64; 2341 2342 temp64.val32.lower = c->ErrDesc.Addr.lower; 2343 temp64.val32.upper = c->ErrDesc.Addr.upper; 2344 pci_free_consistent(h->pdev, sizeof(*c->err_info), 2345 c->err_info, (dma_addr_t) temp64.val); 2346 pci_free_consistent(h->pdev, sizeof(*c), 2347 c, (dma_addr_t) (c->busaddr & DIRECT_LOOKUP_MASK)); 2348 } 2349 2350 #ifdef CONFIG_COMPAT 2351 2352 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd, void *arg) 2353 { 2354 IOCTL32_Command_struct __user *arg32 = 2355 (IOCTL32_Command_struct __user *) arg; 2356 IOCTL_Command_struct arg64; 2357 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); 2358 int err; 2359 u32 cp; 2360 2361 memset(&arg64, 0, sizeof(arg64)); 2362 err = 0; 2363 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, 2364 sizeof(arg64.LUN_info)); 2365 err |= copy_from_user(&arg64.Request, &arg32->Request, 2366 sizeof(arg64.Request)); 2367 err |= copy_from_user(&arg64.error_info, &arg32->error_info, 2368 sizeof(arg64.error_info)); 2369 err |= get_user(arg64.buf_size, &arg32->buf_size); 2370 err |= get_user(cp, &arg32->buf); 2371 arg64.buf = compat_ptr(cp); 2372 err |= copy_to_user(p, &arg64, sizeof(arg64)); 2373 2374 if (err) 2375 return -EFAULT; 2376 2377 err = hpsa_ioctl(dev, CCISS_PASSTHRU, (void *)p); 2378 if (err) 2379 return err; 2380 err |= copy_in_user(&arg32->error_info, &p->error_info, 2381 sizeof(arg32->error_info)); 2382 if (err) 2383 return -EFAULT; 2384 return err; 2385 } 2386 2387 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev, 2388 int cmd, void *arg) 2389 { 2390 BIG_IOCTL32_Command_struct __user *arg32 = 2391 (BIG_IOCTL32_Command_struct __user *) arg; 2392 BIG_IOCTL_Command_struct arg64; 2393 BIG_IOCTL_Command_struct __user *p = 2394 compat_alloc_user_space(sizeof(arg64)); 2395 int err; 2396 u32 cp; 2397 2398 memset(&arg64, 0, sizeof(arg64)); 2399 err = 0; 2400 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, 2401 sizeof(arg64.LUN_info)); 2402 err |= copy_from_user(&arg64.Request, &arg32->Request, 2403 sizeof(arg64.Request)); 2404 err |= copy_from_user(&arg64.error_info, &arg32->error_info, 2405 sizeof(arg64.error_info)); 2406 err |= get_user(arg64.buf_size, &arg32->buf_size); 2407 err |= get_user(arg64.malloc_size, &arg32->malloc_size); 2408 err |= get_user(cp, &arg32->buf); 2409 arg64.buf = compat_ptr(cp); 2410 err |= copy_to_user(p, &arg64, sizeof(arg64)); 2411 2412 if (err) 2413 return -EFAULT; 2414 2415 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, (void *)p); 2416 if (err) 2417 return err; 2418 err |= copy_in_user(&arg32->error_info, &p->error_info, 2419 sizeof(arg32->error_info)); 2420 if (err) 2421 return -EFAULT; 2422 return err; 2423 } 2424 2425 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void *arg) 2426 { 2427 switch (cmd) { 2428 case CCISS_GETPCIINFO: 2429 case CCISS_GETINTINFO: 2430 case CCISS_SETINTINFO: 2431 case CCISS_GETNODENAME: 2432 case CCISS_SETNODENAME: 2433 case CCISS_GETHEARTBEAT: 2434 case CCISS_GETBUSTYPES: 2435 case CCISS_GETFIRMVER: 2436 case CCISS_GETDRIVVER: 2437 case CCISS_REVALIDVOLS: 2438 case CCISS_DEREGDISK: 2439 case CCISS_REGNEWDISK: 2440 case CCISS_REGNEWD: 2441 case CCISS_RESCANDISK: 2442 case CCISS_GETLUNINFO: 2443 return hpsa_ioctl(dev, cmd, arg); 2444 2445 case CCISS_PASSTHRU32: 2446 return hpsa_ioctl32_passthru(dev, cmd, arg); 2447 case CCISS_BIG_PASSTHRU32: 2448 return hpsa_ioctl32_big_passthru(dev, cmd, arg); 2449 2450 default: 2451 return -ENOIOCTLCMD; 2452 } 2453 } 2454 #endif 2455 2456 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp) 2457 { 2458 struct hpsa_pci_info pciinfo; 2459 2460 if (!argp) 2461 return -EINVAL; 2462 pciinfo.domain = pci_domain_nr(h->pdev->bus); 2463 pciinfo.bus = h->pdev->bus->number; 2464 pciinfo.dev_fn = h->pdev->devfn; 2465 pciinfo.board_id = h->board_id; 2466 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo))) 2467 return -EFAULT; 2468 return 0; 2469 } 2470 2471 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp) 2472 { 2473 DriverVer_type DriverVer; 2474 unsigned char vmaj, vmin, vsubmin; 2475 int rc; 2476 2477 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu", 2478 &vmaj, &vmin, &vsubmin); 2479 if (rc != 3) { 2480 dev_info(&h->pdev->dev, "driver version string '%s' " 2481 "unrecognized.", HPSA_DRIVER_VERSION); 2482 vmaj = 0; 2483 vmin = 0; 2484 vsubmin = 0; 2485 } 2486 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin; 2487 if (!argp) 2488 return -EINVAL; 2489 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) 2490 return -EFAULT; 2491 return 0; 2492 } 2493 2494 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) 2495 { 2496 IOCTL_Command_struct iocommand; 2497 struct CommandList *c; 2498 char *buff = NULL; 2499 union u64bit temp64; 2500 2501 if (!argp) 2502 return -EINVAL; 2503 if (!capable(CAP_SYS_RAWIO)) 2504 return -EPERM; 2505 if (copy_from_user(&iocommand, argp, sizeof(iocommand))) 2506 return -EFAULT; 2507 if ((iocommand.buf_size < 1) && 2508 (iocommand.Request.Type.Direction != XFER_NONE)) { 2509 return -EINVAL; 2510 } 2511 if (iocommand.buf_size > 0) { 2512 buff = kmalloc(iocommand.buf_size, GFP_KERNEL); 2513 if (buff == NULL) 2514 return -EFAULT; 2515 if (iocommand.Request.Type.Direction == XFER_WRITE) { 2516 /* Copy the data into the buffer we created */ 2517 if (copy_from_user(buff, iocommand.buf, 2518 iocommand.buf_size)) { 2519 kfree(buff); 2520 return -EFAULT; 2521 } 2522 } else { 2523 memset(buff, 0, iocommand.buf_size); 2524 } 2525 } 2526 c = cmd_special_alloc(h); 2527 if (c == NULL) { 2528 kfree(buff); 2529 return -ENOMEM; 2530 } 2531 /* Fill in the command type */ 2532 c->cmd_type = CMD_IOCTL_PEND; 2533 /* Fill in Command Header */ 2534 c->Header.ReplyQueue = 0; /* unused in simple mode */ 2535 if (iocommand.buf_size > 0) { /* buffer to fill */ 2536 c->Header.SGList = 1; 2537 c->Header.SGTotal = 1; 2538 } else { /* no buffers to fill */ 2539 c->Header.SGList = 0; 2540 c->Header.SGTotal = 0; 2541 } 2542 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN)); 2543 /* use the kernel address the cmd block for tag */ 2544 c->Header.Tag.lower = c->busaddr; 2545 2546 /* Fill in Request block */ 2547 memcpy(&c->Request, &iocommand.Request, 2548 sizeof(c->Request)); 2549 2550 /* Fill in the scatter gather information */ 2551 if (iocommand.buf_size > 0) { 2552 temp64.val = pci_map_single(h->pdev, buff, 2553 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); 2554 c->SG[0].Addr.lower = temp64.val32.lower; 2555 c->SG[0].Addr.upper = temp64.val32.upper; 2556 c->SG[0].Len = iocommand.buf_size; 2557 c->SG[0].Ext = 0; /* we are not chaining*/ 2558 } 2559 hpsa_scsi_do_simple_cmd_core(h, c); 2560 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL); 2561 check_ioctl_unit_attention(h, c); 2562 2563 /* Copy the error information out */ 2564 memcpy(&iocommand.error_info, c->err_info, 2565 sizeof(iocommand.error_info)); 2566 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) { 2567 kfree(buff); 2568 cmd_special_free(h, c); 2569 return -EFAULT; 2570 } 2571 if (iocommand.Request.Type.Direction == XFER_READ && 2572 iocommand.buf_size > 0) { 2573 /* Copy the data out of the buffer we created */ 2574 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { 2575 kfree(buff); 2576 cmd_special_free(h, c); 2577 return -EFAULT; 2578 } 2579 } 2580 kfree(buff); 2581 cmd_special_free(h, c); 2582 return 0; 2583 } 2584 2585 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) 2586 { 2587 BIG_IOCTL_Command_struct *ioc; 2588 struct CommandList *c; 2589 unsigned char **buff = NULL; 2590 int *buff_size = NULL; 2591 union u64bit temp64; 2592 BYTE sg_used = 0; 2593 int status = 0; 2594 int i; 2595 u32 left; 2596 u32 sz; 2597 BYTE __user *data_ptr; 2598 2599 if (!argp) 2600 return -EINVAL; 2601 if (!capable(CAP_SYS_RAWIO)) 2602 return -EPERM; 2603 ioc = (BIG_IOCTL_Command_struct *) 2604 kmalloc(sizeof(*ioc), GFP_KERNEL); 2605 if (!ioc) { 2606 status = -ENOMEM; 2607 goto cleanup1; 2608 } 2609 if (copy_from_user(ioc, argp, sizeof(*ioc))) { 2610 status = -EFAULT; 2611 goto cleanup1; 2612 } 2613 if ((ioc->buf_size < 1) && 2614 (ioc->Request.Type.Direction != XFER_NONE)) { 2615 status = -EINVAL; 2616 goto cleanup1; 2617 } 2618 /* Check kmalloc limits using all SGs */ 2619 if (ioc->malloc_size > MAX_KMALLOC_SIZE) { 2620 status = -EINVAL; 2621 goto cleanup1; 2622 } 2623 if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { 2624 status = -EINVAL; 2625 goto cleanup1; 2626 } 2627 buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); 2628 if (!buff) { 2629 status = -ENOMEM; 2630 goto cleanup1; 2631 } 2632 buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); 2633 if (!buff_size) { 2634 status = -ENOMEM; 2635 goto cleanup1; 2636 } 2637 left = ioc->buf_size; 2638 data_ptr = ioc->buf; 2639 while (left) { 2640 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; 2641 buff_size[sg_used] = sz; 2642 buff[sg_used] = kmalloc(sz, GFP_KERNEL); 2643 if (buff[sg_used] == NULL) { 2644 status = -ENOMEM; 2645 goto cleanup1; 2646 } 2647 if (ioc->Request.Type.Direction == XFER_WRITE) { 2648 if (copy_from_user(buff[sg_used], data_ptr, sz)) { 2649 status = -ENOMEM; 2650 goto cleanup1; 2651 } 2652 } else 2653 memset(buff[sg_used], 0, sz); 2654 left -= sz; 2655 data_ptr += sz; 2656 sg_used++; 2657 } 2658 c = cmd_special_alloc(h); 2659 if (c == NULL) { 2660 status = -ENOMEM; 2661 goto cleanup1; 2662 } 2663 c->cmd_type = CMD_IOCTL_PEND; 2664 c->Header.ReplyQueue = 0; 2665 c->Header.SGList = c->Header.SGTotal = sg_used; 2666 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN)); 2667 c->Header.Tag.lower = c->busaddr; 2668 memcpy(&c->Request, &ioc->Request, sizeof(c->Request)); 2669 if (ioc->buf_size > 0) { 2670 int i; 2671 for (i = 0; i < sg_used; i++) { 2672 temp64.val = pci_map_single(h->pdev, buff[i], 2673 buff_size[i], PCI_DMA_BIDIRECTIONAL); 2674 c->SG[i].Addr.lower = temp64.val32.lower; 2675 c->SG[i].Addr.upper = temp64.val32.upper; 2676 c->SG[i].Len = buff_size[i]; 2677 /* we are not chaining */ 2678 c->SG[i].Ext = 0; 2679 } 2680 } 2681 hpsa_scsi_do_simple_cmd_core(h, c); 2682 if (sg_used) 2683 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL); 2684 check_ioctl_unit_attention(h, c); 2685 /* Copy the error information out */ 2686 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); 2687 if (copy_to_user(argp, ioc, sizeof(*ioc))) { 2688 cmd_special_free(h, c); 2689 status = -EFAULT; 2690 goto cleanup1; 2691 } 2692 if (ioc->Request.Type.Direction == XFER_READ && ioc->buf_size > 0) { 2693 /* Copy the data out of the buffer we created */ 2694 BYTE __user *ptr = ioc->buf; 2695 for (i = 0; i < sg_used; i++) { 2696 if (copy_to_user(ptr, buff[i], buff_size[i])) { 2697 cmd_special_free(h, c); 2698 status = -EFAULT; 2699 goto cleanup1; 2700 } 2701 ptr += buff_size[i]; 2702 } 2703 } 2704 cmd_special_free(h, c); 2705 status = 0; 2706 cleanup1: 2707 if (buff) { 2708 for (i = 0; i < sg_used; i++) 2709 kfree(buff[i]); 2710 kfree(buff); 2711 } 2712 kfree(buff_size); 2713 kfree(ioc); 2714 return status; 2715 } 2716 2717 static void check_ioctl_unit_attention(struct ctlr_info *h, 2718 struct CommandList *c) 2719 { 2720 if (c->err_info->CommandStatus == CMD_TARGET_STATUS && 2721 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) 2722 (void) check_for_unit_attention(h, c); 2723 } 2724 /* 2725 * ioctl 2726 */ 2727 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void *arg) 2728 { 2729 struct ctlr_info *h; 2730 void __user *argp = (void __user *)arg; 2731 2732 h = sdev_to_hba(dev); 2733 2734 switch (cmd) { 2735 case CCISS_DEREGDISK: 2736 case CCISS_REGNEWDISK: 2737 case CCISS_REGNEWD: 2738 hpsa_scan_start(h->scsi_host); 2739 return 0; 2740 case CCISS_GETPCIINFO: 2741 return hpsa_getpciinfo_ioctl(h, argp); 2742 case CCISS_GETDRIVVER: 2743 return hpsa_getdrivver_ioctl(h, argp); 2744 case CCISS_PASSTHRU: 2745 return hpsa_passthru_ioctl(h, argp); 2746 case CCISS_BIG_PASSTHRU: 2747 return hpsa_big_passthru_ioctl(h, argp); 2748 default: 2749 return -ENOTTY; 2750 } 2751 } 2752 2753 static void fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, 2754 void *buff, size_t size, u8 page_code, unsigned char *scsi3addr, 2755 int cmd_type) 2756 { 2757 int pci_dir = XFER_NONE; 2758 2759 c->cmd_type = CMD_IOCTL_PEND; 2760 c->Header.ReplyQueue = 0; 2761 if (buff != NULL && size > 0) { 2762 c->Header.SGList = 1; 2763 c->Header.SGTotal = 1; 2764 } else { 2765 c->Header.SGList = 0; 2766 c->Header.SGTotal = 0; 2767 } 2768 c->Header.Tag.lower = c->busaddr; 2769 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); 2770 2771 c->Request.Type.Type = cmd_type; 2772 if (cmd_type == TYPE_CMD) { 2773 switch (cmd) { 2774 case HPSA_INQUIRY: 2775 /* are we trying to read a vital product page */ 2776 if (page_code != 0) { 2777 c->Request.CDB[1] = 0x01; 2778 c->Request.CDB[2] = page_code; 2779 } 2780 c->Request.CDBLen = 6; 2781 c->Request.Type.Attribute = ATTR_SIMPLE; 2782 c->Request.Type.Direction = XFER_READ; 2783 c->Request.Timeout = 0; 2784 c->Request.CDB[0] = HPSA_INQUIRY; 2785 c->Request.CDB[4] = size & 0xFF; 2786 break; 2787 case HPSA_REPORT_LOG: 2788 case HPSA_REPORT_PHYS: 2789 /* Talking to controller so It's a physical command 2790 mode = 00 target = 0. Nothing to write. 2791 */ 2792 c->Request.CDBLen = 12; 2793 c->Request.Type.Attribute = ATTR_SIMPLE; 2794 c->Request.Type.Direction = XFER_READ; 2795 c->Request.Timeout = 0; 2796 c->Request.CDB[0] = cmd; 2797 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ 2798 c->Request.CDB[7] = (size >> 16) & 0xFF; 2799 c->Request.CDB[8] = (size >> 8) & 0xFF; 2800 c->Request.CDB[9] = size & 0xFF; 2801 break; 2802 case HPSA_CACHE_FLUSH: 2803 c->Request.CDBLen = 12; 2804 c->Request.Type.Attribute = ATTR_SIMPLE; 2805 c->Request.Type.Direction = XFER_WRITE; 2806 c->Request.Timeout = 0; 2807 c->Request.CDB[0] = BMIC_WRITE; 2808 c->Request.CDB[6] = BMIC_CACHE_FLUSH; 2809 break; 2810 case TEST_UNIT_READY: 2811 c->Request.CDBLen = 6; 2812 c->Request.Type.Attribute = ATTR_SIMPLE; 2813 c->Request.Type.Direction = XFER_NONE; 2814 c->Request.Timeout = 0; 2815 break; 2816 default: 2817 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); 2818 BUG(); 2819 return; 2820 } 2821 } else if (cmd_type == TYPE_MSG) { 2822 switch (cmd) { 2823 2824 case HPSA_DEVICE_RESET_MSG: 2825 c->Request.CDBLen = 16; 2826 c->Request.Type.Type = 1; /* It is a MSG not a CMD */ 2827 c->Request.Type.Attribute = ATTR_SIMPLE; 2828 c->Request.Type.Direction = XFER_NONE; 2829 c->Request.Timeout = 0; /* Don't time out */ 2830 c->Request.CDB[0] = 0x01; /* RESET_MSG is 0x01 */ 2831 c->Request.CDB[1] = 0x03; /* Reset target above */ 2832 /* If bytes 4-7 are zero, it means reset the */ 2833 /* LunID device */ 2834 c->Request.CDB[4] = 0x00; 2835 c->Request.CDB[5] = 0x00; 2836 c->Request.CDB[6] = 0x00; 2837 c->Request.CDB[7] = 0x00; 2838 break; 2839 2840 default: 2841 dev_warn(&h->pdev->dev, "unknown message type %d\n", 2842 cmd); 2843 BUG(); 2844 } 2845 } else { 2846 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); 2847 BUG(); 2848 } 2849 2850 switch (c->Request.Type.Direction) { 2851 case XFER_READ: 2852 pci_dir = PCI_DMA_FROMDEVICE; 2853 break; 2854 case XFER_WRITE: 2855 pci_dir = PCI_DMA_TODEVICE; 2856 break; 2857 case XFER_NONE: 2858 pci_dir = PCI_DMA_NONE; 2859 break; 2860 default: 2861 pci_dir = PCI_DMA_BIDIRECTIONAL; 2862 } 2863 2864 hpsa_map_one(h->pdev, c, buff, size, pci_dir); 2865 2866 return; 2867 } 2868 2869 /* 2870 * Map (physical) PCI mem into (virtual) kernel space 2871 */ 2872 static void __iomem *remap_pci_mem(ulong base, ulong size) 2873 { 2874 ulong page_base = ((ulong) base) & PAGE_MASK; 2875 ulong page_offs = ((ulong) base) - page_base; 2876 void __iomem *page_remapped = ioremap(page_base, page_offs + size); 2877 2878 return page_remapped ? (page_remapped + page_offs) : NULL; 2879 } 2880 2881 /* Takes cmds off the submission queue and sends them to the hardware, 2882 * then puts them on the queue of cmds waiting for completion. 2883 */ 2884 static void start_io(struct ctlr_info *h) 2885 { 2886 struct CommandList *c; 2887 2888 while (!list_empty(&h->reqQ)) { 2889 c = list_entry(h->reqQ.next, struct CommandList, list); 2890 /* can't do anything if fifo is full */ 2891 if ((h->access.fifo_full(h))) { 2892 dev_warn(&h->pdev->dev, "fifo full\n"); 2893 break; 2894 } 2895 2896 /* Get the first entry from the Request Q */ 2897 removeQ(c); 2898 h->Qdepth--; 2899 2900 /* Tell the controller execute command */ 2901 h->access.submit_command(h, c); 2902 2903 /* Put job onto the completed Q */ 2904 addQ(&h->cmpQ, c); 2905 } 2906 } 2907 2908 static inline unsigned long get_next_completion(struct ctlr_info *h) 2909 { 2910 return h->access.command_completed(h); 2911 } 2912 2913 static inline bool interrupt_pending(struct ctlr_info *h) 2914 { 2915 return h->access.intr_pending(h); 2916 } 2917 2918 static inline long interrupt_not_for_us(struct ctlr_info *h) 2919 { 2920 return (h->access.intr_pending(h) == 0) || 2921 (h->interrupts_enabled == 0); 2922 } 2923 2924 static inline int bad_tag(struct ctlr_info *h, u32 tag_index, 2925 u32 raw_tag) 2926 { 2927 if (unlikely(tag_index >= h->nr_cmds)) { 2928 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); 2929 return 1; 2930 } 2931 return 0; 2932 } 2933 2934 static inline void finish_cmd(struct CommandList *c, u32 raw_tag) 2935 { 2936 removeQ(c); 2937 if (likely(c->cmd_type == CMD_SCSI)) 2938 complete_scsi_command(c); 2939 else if (c->cmd_type == CMD_IOCTL_PEND) 2940 complete(c->waiting); 2941 } 2942 2943 static inline u32 hpsa_tag_contains_index(u32 tag) 2944 { 2945 return tag & DIRECT_LOOKUP_BIT; 2946 } 2947 2948 static inline u32 hpsa_tag_to_index(u32 tag) 2949 { 2950 return tag >> DIRECT_LOOKUP_SHIFT; 2951 } 2952 2953 2954 static inline u32 hpsa_tag_discard_error_bits(struct ctlr_info *h, u32 tag) 2955 { 2956 #define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1) 2957 #define HPSA_SIMPLE_ERROR_BITS 0x03 2958 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) 2959 return tag & ~HPSA_SIMPLE_ERROR_BITS; 2960 return tag & ~HPSA_PERF_ERROR_BITS; 2961 } 2962 2963 /* process completion of an indexed ("direct lookup") command */ 2964 static inline u32 process_indexed_cmd(struct ctlr_info *h, 2965 u32 raw_tag) 2966 { 2967 u32 tag_index; 2968 struct CommandList *c; 2969 2970 tag_index = hpsa_tag_to_index(raw_tag); 2971 if (bad_tag(h, tag_index, raw_tag)) 2972 return next_command(h); 2973 c = h->cmd_pool + tag_index; 2974 finish_cmd(c, raw_tag); 2975 return next_command(h); 2976 } 2977 2978 /* process completion of a non-indexed command */ 2979 static inline u32 process_nonindexed_cmd(struct ctlr_info *h, 2980 u32 raw_tag) 2981 { 2982 u32 tag; 2983 struct CommandList *c = NULL; 2984 2985 tag = hpsa_tag_discard_error_bits(h, raw_tag); 2986 list_for_each_entry(c, &h->cmpQ, list) { 2987 if ((c->busaddr & 0xFFFFFFE0) == (tag & 0xFFFFFFE0)) { 2988 finish_cmd(c, raw_tag); 2989 return next_command(h); 2990 } 2991 } 2992 bad_tag(h, h->nr_cmds + 1, raw_tag); 2993 return next_command(h); 2994 } 2995 2996 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id) 2997 { 2998 struct ctlr_info *h = dev_id; 2999 unsigned long flags; 3000 u32 raw_tag; 3001 3002 if (interrupt_not_for_us(h)) 3003 return IRQ_NONE; 3004 spin_lock_irqsave(&h->lock, flags); 3005 while (interrupt_pending(h)) { 3006 raw_tag = get_next_completion(h); 3007 while (raw_tag != FIFO_EMPTY) { 3008 if (hpsa_tag_contains_index(raw_tag)) 3009 raw_tag = process_indexed_cmd(h, raw_tag); 3010 else 3011 raw_tag = process_nonindexed_cmd(h, raw_tag); 3012 } 3013 } 3014 spin_unlock_irqrestore(&h->lock, flags); 3015 return IRQ_HANDLED; 3016 } 3017 3018 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id) 3019 { 3020 struct ctlr_info *h = dev_id; 3021 unsigned long flags; 3022 u32 raw_tag; 3023 3024 spin_lock_irqsave(&h->lock, flags); 3025 raw_tag = get_next_completion(h); 3026 while (raw_tag != FIFO_EMPTY) { 3027 if (hpsa_tag_contains_index(raw_tag)) 3028 raw_tag = process_indexed_cmd(h, raw_tag); 3029 else 3030 raw_tag = process_nonindexed_cmd(h, raw_tag); 3031 } 3032 spin_unlock_irqrestore(&h->lock, flags); 3033 return IRQ_HANDLED; 3034 } 3035 3036 /* Send a message CDB to the firmware. Careful, this only works 3037 * in simple mode, not performant mode due to the tag lookup. 3038 * We only ever use this immediately after a controller reset. 3039 */ 3040 static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode, 3041 unsigned char type) 3042 { 3043 struct Command { 3044 struct CommandListHeader CommandHeader; 3045 struct RequestBlock Request; 3046 struct ErrDescriptor ErrorDescriptor; 3047 }; 3048 struct Command *cmd; 3049 static const size_t cmd_sz = sizeof(*cmd) + 3050 sizeof(cmd->ErrorDescriptor); 3051 dma_addr_t paddr64; 3052 uint32_t paddr32, tag; 3053 void __iomem *vaddr; 3054 int i, err; 3055 3056 vaddr = pci_ioremap_bar(pdev, 0); 3057 if (vaddr == NULL) 3058 return -ENOMEM; 3059 3060 /* The Inbound Post Queue only accepts 32-bit physical addresses for the 3061 * CCISS commands, so they must be allocated from the lower 4GiB of 3062 * memory. 3063 */ 3064 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 3065 if (err) { 3066 iounmap(vaddr); 3067 return -ENOMEM; 3068 } 3069 3070 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); 3071 if (cmd == NULL) { 3072 iounmap(vaddr); 3073 return -ENOMEM; 3074 } 3075 3076 /* This must fit, because of the 32-bit consistent DMA mask. Also, 3077 * although there's no guarantee, we assume that the address is at 3078 * least 4-byte aligned (most likely, it's page-aligned). 3079 */ 3080 paddr32 = paddr64; 3081 3082 cmd->CommandHeader.ReplyQueue = 0; 3083 cmd->CommandHeader.SGList = 0; 3084 cmd->CommandHeader.SGTotal = 0; 3085 cmd->CommandHeader.Tag.lower = paddr32; 3086 cmd->CommandHeader.Tag.upper = 0; 3087 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); 3088 3089 cmd->Request.CDBLen = 16; 3090 cmd->Request.Type.Type = TYPE_MSG; 3091 cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; 3092 cmd->Request.Type.Direction = XFER_NONE; 3093 cmd->Request.Timeout = 0; /* Don't time out */ 3094 cmd->Request.CDB[0] = opcode; 3095 cmd->Request.CDB[1] = type; 3096 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */ 3097 cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(*cmd); 3098 cmd->ErrorDescriptor.Addr.upper = 0; 3099 cmd->ErrorDescriptor.Len = sizeof(struct ErrorInfo); 3100 3101 writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); 3102 3103 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) { 3104 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); 3105 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr32) 3106 break; 3107 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS); 3108 } 3109 3110 iounmap(vaddr); 3111 3112 /* we leak the DMA buffer here ... no choice since the controller could 3113 * still complete the command. 3114 */ 3115 if (i == HPSA_MSG_SEND_RETRY_LIMIT) { 3116 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n", 3117 opcode, type); 3118 return -ETIMEDOUT; 3119 } 3120 3121 pci_free_consistent(pdev, cmd_sz, cmd, paddr64); 3122 3123 if (tag & HPSA_ERROR_BIT) { 3124 dev_err(&pdev->dev, "controller message %02x:%02x failed\n", 3125 opcode, type); 3126 return -EIO; 3127 } 3128 3129 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", 3130 opcode, type); 3131 return 0; 3132 } 3133 3134 #define hpsa_soft_reset_controller(p) hpsa_message(p, 1, 0) 3135 #define hpsa_noop(p) hpsa_message(p, 3, 0) 3136 3137 static int hpsa_controller_hard_reset(struct pci_dev *pdev, 3138 void * __iomem vaddr, bool use_doorbell) 3139 { 3140 u16 pmcsr; 3141 int pos; 3142 3143 if (use_doorbell) { 3144 /* For everything after the P600, the PCI power state method 3145 * of resetting the controller doesn't work, so we have this 3146 * other way using the doorbell register. 3147 */ 3148 dev_info(&pdev->dev, "using doorbell to reset controller\n"); 3149 writel(DOORBELL_CTLR_RESET, vaddr + SA5_DOORBELL); 3150 msleep(1000); 3151 } else { /* Try to do it the PCI power state way */ 3152 3153 /* Quoting from the Open CISS Specification: "The Power 3154 * Management Control/Status Register (CSR) controls the power 3155 * state of the device. The normal operating state is D0, 3156 * CSR=00h. The software off state is D3, CSR=03h. To reset 3157 * the controller, place the interface device in D3 then to D0, 3158 * this causes a secondary PCI reset which will reset the 3159 * controller." */ 3160 3161 pos = pci_find_capability(pdev, PCI_CAP_ID_PM); 3162 if (pos == 0) { 3163 dev_err(&pdev->dev, 3164 "hpsa_reset_controller: " 3165 "PCI PM not supported\n"); 3166 return -ENODEV; 3167 } 3168 dev_info(&pdev->dev, "using PCI PM to reset controller\n"); 3169 /* enter the D3hot power management state */ 3170 pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); 3171 pmcsr &= ~PCI_PM_CTRL_STATE_MASK; 3172 pmcsr |= PCI_D3hot; 3173 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); 3174 3175 msleep(500); 3176 3177 /* enter the D0 power management state */ 3178 pmcsr &= ~PCI_PM_CTRL_STATE_MASK; 3179 pmcsr |= PCI_D0; 3180 pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); 3181 3182 msleep(500); 3183 } 3184 return 0; 3185 } 3186 3187 static __devinit void init_driver_version(char *driver_version, int len) 3188 { 3189 memset(driver_version, 0, len); 3190 strncpy(driver_version, "hpsa " HPSA_DRIVER_VERSION, len - 1); 3191 } 3192 3193 static __devinit int write_driver_ver_to_cfgtable( 3194 struct CfgTable __iomem *cfgtable) 3195 { 3196 char *driver_version; 3197 int i, size = sizeof(cfgtable->driver_version); 3198 3199 driver_version = kmalloc(size, GFP_KERNEL); 3200 if (!driver_version) 3201 return -ENOMEM; 3202 3203 init_driver_version(driver_version, size); 3204 for (i = 0; i < size; i++) 3205 writeb(driver_version[i], &cfgtable->driver_version[i]); 3206 kfree(driver_version); 3207 return 0; 3208 } 3209 3210 static __devinit void read_driver_ver_from_cfgtable( 3211 struct CfgTable __iomem *cfgtable, unsigned char *driver_ver) 3212 { 3213 int i; 3214 3215 for (i = 0; i < sizeof(cfgtable->driver_version); i++) 3216 driver_ver[i] = readb(&cfgtable->driver_version[i]); 3217 } 3218 3219 static __devinit int controller_reset_failed( 3220 struct CfgTable __iomem *cfgtable) 3221 { 3222 3223 char *driver_ver, *old_driver_ver; 3224 int rc, size = sizeof(cfgtable->driver_version); 3225 3226 old_driver_ver = kmalloc(2 * size, GFP_KERNEL); 3227 if (!old_driver_ver) 3228 return -ENOMEM; 3229 driver_ver = old_driver_ver + size; 3230 3231 /* After a reset, the 32 bytes of "driver version" in the cfgtable 3232 * should have been changed, otherwise we know the reset failed. 3233 */ 3234 init_driver_version(old_driver_ver, size); 3235 read_driver_ver_from_cfgtable(cfgtable, driver_ver); 3236 rc = !memcmp(driver_ver, old_driver_ver, size); 3237 kfree(old_driver_ver); 3238 return rc; 3239 } 3240 /* This does a hard reset of the controller using PCI power management 3241 * states or the using the doorbell register. 3242 */ 3243 static __devinit int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev) 3244 { 3245 u64 cfg_offset; 3246 u32 cfg_base_addr; 3247 u64 cfg_base_addr_index; 3248 void __iomem *vaddr; 3249 unsigned long paddr; 3250 u32 misc_fw_support; 3251 int rc; 3252 struct CfgTable __iomem *cfgtable; 3253 bool use_doorbell; 3254 u32 board_id; 3255 u16 command_register; 3256 3257 /* For controllers as old as the P600, this is very nearly 3258 * the same thing as 3259 * 3260 * pci_save_state(pci_dev); 3261 * pci_set_power_state(pci_dev, PCI_D3hot); 3262 * pci_set_power_state(pci_dev, PCI_D0); 3263 * pci_restore_state(pci_dev); 3264 * 3265 * For controllers newer than the P600, the pci power state 3266 * method of resetting doesn't work so we have another way 3267 * using the doorbell register. 3268 */ 3269 3270 /* Exclude 640x boards. These are two pci devices in one slot 3271 * which share a battery backed cache module. One controls the 3272 * cache, the other accesses the cache through the one that controls 3273 * it. If we reset the one controlling the cache, the other will 3274 * likely not be happy. Just forbid resetting this conjoined mess. 3275 * The 640x isn't really supported by hpsa anyway. 3276 */ 3277 rc = hpsa_lookup_board_id(pdev, &board_id); 3278 if (rc < 0) { 3279 dev_warn(&pdev->dev, "Not resetting device.\n"); 3280 return -ENODEV; 3281 } 3282 if (board_id == 0x409C0E11 || board_id == 0x409D0E11) 3283 return -ENOTSUPP; 3284 3285 /* Save the PCI command register */ 3286 pci_read_config_word(pdev, 4, &command_register); 3287 /* Turn the board off. This is so that later pci_restore_state() 3288 * won't turn the board on before the rest of config space is ready. 3289 */ 3290 pci_disable_device(pdev); 3291 pci_save_state(pdev); 3292 3293 /* find the first memory BAR, so we can find the cfg table */ 3294 rc = hpsa_pci_find_memory_BAR(pdev, &paddr); 3295 if (rc) 3296 return rc; 3297 vaddr = remap_pci_mem(paddr, 0x250); 3298 if (!vaddr) 3299 return -ENOMEM; 3300 3301 /* find cfgtable in order to check if reset via doorbell is supported */ 3302 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, 3303 &cfg_base_addr_index, &cfg_offset); 3304 if (rc) 3305 goto unmap_vaddr; 3306 cfgtable = remap_pci_mem(pci_resource_start(pdev, 3307 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); 3308 if (!cfgtable) { 3309 rc = -ENOMEM; 3310 goto unmap_vaddr; 3311 } 3312 rc = write_driver_ver_to_cfgtable(cfgtable); 3313 if (rc) 3314 goto unmap_vaddr; 3315 3316 /* If reset via doorbell register is supported, use that. */ 3317 misc_fw_support = readl(&cfgtable->misc_fw_support); 3318 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; 3319 3320 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell); 3321 if (rc) 3322 goto unmap_cfgtable; 3323 3324 pci_restore_state(pdev); 3325 rc = pci_enable_device(pdev); 3326 if (rc) { 3327 dev_warn(&pdev->dev, "failed to enable device.\n"); 3328 goto unmap_cfgtable; 3329 } 3330 pci_write_config_word(pdev, 4, command_register); 3331 3332 /* Some devices (notably the HP Smart Array 5i Controller) 3333 need a little pause here */ 3334 msleep(HPSA_POST_RESET_PAUSE_MSECS); 3335 3336 /* Wait for board to become not ready, then ready. */ 3337 dev_info(&pdev->dev, "Waiting for board to become ready.\n"); 3338 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_NOT_READY); 3339 if (rc) 3340 dev_warn(&pdev->dev, 3341 "failed waiting for board to become not ready\n"); 3342 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY); 3343 if (rc) { 3344 dev_warn(&pdev->dev, 3345 "failed waiting for board to become ready\n"); 3346 goto unmap_cfgtable; 3347 } 3348 3349 rc = controller_reset_failed(vaddr); 3350 if (rc < 0) 3351 goto unmap_cfgtable; 3352 if (rc) { 3353 dev_warn(&pdev->dev, "Unable to successfully reset controller," 3354 " Ignoring controller.\n"); 3355 rc = -ENODEV; 3356 } else { 3357 dev_info(&pdev->dev, "board ready.\n"); 3358 } 3359 3360 unmap_cfgtable: 3361 iounmap(cfgtable); 3362 3363 unmap_vaddr: 3364 iounmap(vaddr); 3365 return rc; 3366 } 3367 3368 /* 3369 * We cannot read the structure directly, for portability we must use 3370 * the io functions. 3371 * This is for debug only. 3372 */ 3373 static void print_cfg_table(struct device *dev, struct CfgTable *tb) 3374 { 3375 #ifdef HPSA_DEBUG 3376 int i; 3377 char temp_name[17]; 3378 3379 dev_info(dev, "Controller Configuration information\n"); 3380 dev_info(dev, "------------------------------------\n"); 3381 for (i = 0; i < 4; i++) 3382 temp_name[i] = readb(&(tb->Signature[i])); 3383 temp_name[4] = '\0'; 3384 dev_info(dev, " Signature = %s\n", temp_name); 3385 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence))); 3386 dev_info(dev, " Transport methods supported = 0x%x\n", 3387 readl(&(tb->TransportSupport))); 3388 dev_info(dev, " Transport methods active = 0x%x\n", 3389 readl(&(tb->TransportActive))); 3390 dev_info(dev, " Requested transport Method = 0x%x\n", 3391 readl(&(tb->HostWrite.TransportRequest))); 3392 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n", 3393 readl(&(tb->HostWrite.CoalIntDelay))); 3394 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n", 3395 readl(&(tb->HostWrite.CoalIntCount))); 3396 dev_info(dev, " Max outstanding commands = 0x%d\n", 3397 readl(&(tb->CmdsOutMax))); 3398 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes))); 3399 for (i = 0; i < 16; i++) 3400 temp_name[i] = readb(&(tb->ServerName[i])); 3401 temp_name[16] = '\0'; 3402 dev_info(dev, " Server Name = %s\n", temp_name); 3403 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n", 3404 readl(&(tb->HeartBeat))); 3405 #endif /* HPSA_DEBUG */ 3406 } 3407 3408 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) 3409 { 3410 int i, offset, mem_type, bar_type; 3411 3412 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ 3413 return 0; 3414 offset = 0; 3415 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { 3416 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; 3417 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) 3418 offset += 4; 3419 else { 3420 mem_type = pci_resource_flags(pdev, i) & 3421 PCI_BASE_ADDRESS_MEM_TYPE_MASK; 3422 switch (mem_type) { 3423 case PCI_BASE_ADDRESS_MEM_TYPE_32: 3424 case PCI_BASE_ADDRESS_MEM_TYPE_1M: 3425 offset += 4; /* 32 bit */ 3426 break; 3427 case PCI_BASE_ADDRESS_MEM_TYPE_64: 3428 offset += 8; 3429 break; 3430 default: /* reserved in PCI 2.2 */ 3431 dev_warn(&pdev->dev, 3432 "base address is invalid\n"); 3433 return -1; 3434 break; 3435 } 3436 } 3437 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) 3438 return i + 1; 3439 } 3440 return -1; 3441 } 3442 3443 /* If MSI/MSI-X is supported by the kernel we will try to enable it on 3444 * controllers that are capable. If not, we use IO-APIC mode. 3445 */ 3446 3447 static void __devinit hpsa_interrupt_mode(struct ctlr_info *h) 3448 { 3449 #ifdef CONFIG_PCI_MSI 3450 int err; 3451 struct msix_entry hpsa_msix_entries[4] = { {0, 0}, {0, 1}, 3452 {0, 2}, {0, 3} 3453 }; 3454 3455 /* Some boards advertise MSI but don't really support it */ 3456 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || 3457 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) 3458 goto default_int_mode; 3459 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { 3460 dev_info(&h->pdev->dev, "MSIX\n"); 3461 err = pci_enable_msix(h->pdev, hpsa_msix_entries, 4); 3462 if (!err) { 3463 h->intr[0] = hpsa_msix_entries[0].vector; 3464 h->intr[1] = hpsa_msix_entries[1].vector; 3465 h->intr[2] = hpsa_msix_entries[2].vector; 3466 h->intr[3] = hpsa_msix_entries[3].vector; 3467 h->msix_vector = 1; 3468 return; 3469 } 3470 if (err > 0) { 3471 dev_warn(&h->pdev->dev, "only %d MSI-X vectors " 3472 "available\n", err); 3473 goto default_int_mode; 3474 } else { 3475 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", 3476 err); 3477 goto default_int_mode; 3478 } 3479 } 3480 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { 3481 dev_info(&h->pdev->dev, "MSI\n"); 3482 if (!pci_enable_msi(h->pdev)) 3483 h->msi_vector = 1; 3484 else 3485 dev_warn(&h->pdev->dev, "MSI init failed\n"); 3486 } 3487 default_int_mode: 3488 #endif /* CONFIG_PCI_MSI */ 3489 /* if we get here we're going to use the default interrupt mode */ 3490 h->intr[h->intr_mode] = h->pdev->irq; 3491 } 3492 3493 static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id) 3494 { 3495 int i; 3496 u32 subsystem_vendor_id, subsystem_device_id; 3497 3498 subsystem_vendor_id = pdev->subsystem_vendor; 3499 subsystem_device_id = pdev->subsystem_device; 3500 *board_id = ((subsystem_device_id << 16) & 0xffff0000) | 3501 subsystem_vendor_id; 3502 3503 for (i = 0; i < ARRAY_SIZE(products); i++) 3504 if (*board_id == products[i].board_id) 3505 return i; 3506 3507 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP && 3508 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) || 3509 !hpsa_allow_any) { 3510 dev_warn(&pdev->dev, "unrecognized board ID: " 3511 "0x%08x, ignoring.\n", *board_id); 3512 return -ENODEV; 3513 } 3514 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */ 3515 } 3516 3517 static inline bool hpsa_board_disabled(struct pci_dev *pdev) 3518 { 3519 u16 command; 3520 3521 (void) pci_read_config_word(pdev, PCI_COMMAND, &command); 3522 return ((command & PCI_COMMAND_MEMORY) == 0); 3523 } 3524 3525 static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev, 3526 unsigned long *memory_bar) 3527 { 3528 int i; 3529 3530 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) 3531 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { 3532 /* addressing mode bits already removed */ 3533 *memory_bar = pci_resource_start(pdev, i); 3534 dev_dbg(&pdev->dev, "memory BAR = %lx\n", 3535 *memory_bar); 3536 return 0; 3537 } 3538 dev_warn(&pdev->dev, "no memory BAR found\n"); 3539 return -ENODEV; 3540 } 3541 3542 static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev, 3543 void __iomem *vaddr, int wait_for_ready) 3544 { 3545 int i, iterations; 3546 u32 scratchpad; 3547 if (wait_for_ready) 3548 iterations = HPSA_BOARD_READY_ITERATIONS; 3549 else 3550 iterations = HPSA_BOARD_NOT_READY_ITERATIONS; 3551 3552 for (i = 0; i < iterations; i++) { 3553 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); 3554 if (wait_for_ready) { 3555 if (scratchpad == HPSA_FIRMWARE_READY) 3556 return 0; 3557 } else { 3558 if (scratchpad != HPSA_FIRMWARE_READY) 3559 return 0; 3560 } 3561 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS); 3562 } 3563 dev_warn(&pdev->dev, "board not ready, timed out.\n"); 3564 return -ENODEV; 3565 } 3566 3567 static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev, 3568 void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, 3569 u64 *cfg_offset) 3570 { 3571 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); 3572 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); 3573 *cfg_base_addr &= (u32) 0x0000ffff; 3574 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); 3575 if (*cfg_base_addr_index == -1) { 3576 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n"); 3577 return -ENODEV; 3578 } 3579 return 0; 3580 } 3581 3582 static int __devinit hpsa_find_cfgtables(struct ctlr_info *h) 3583 { 3584 u64 cfg_offset; 3585 u32 cfg_base_addr; 3586 u64 cfg_base_addr_index; 3587 u32 trans_offset; 3588 int rc; 3589 3590 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, 3591 &cfg_base_addr_index, &cfg_offset); 3592 if (rc) 3593 return rc; 3594 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, 3595 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); 3596 if (!h->cfgtable) 3597 return -ENOMEM; 3598 rc = write_driver_ver_to_cfgtable(h->cfgtable); 3599 if (rc) 3600 return rc; 3601 /* Find performant mode table. */ 3602 trans_offset = readl(&h->cfgtable->TransMethodOffset); 3603 h->transtable = remap_pci_mem(pci_resource_start(h->pdev, 3604 cfg_base_addr_index)+cfg_offset+trans_offset, 3605 sizeof(*h->transtable)); 3606 if (!h->transtable) 3607 return -ENOMEM; 3608 return 0; 3609 } 3610 3611 static void __devinit hpsa_get_max_perf_mode_cmds(struct ctlr_info *h) 3612 { 3613 h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); 3614 3615 /* Limit commands in memory limited kdump scenario. */ 3616 if (reset_devices && h->max_commands > 32) 3617 h->max_commands = 32; 3618 3619 if (h->max_commands < 16) { 3620 dev_warn(&h->pdev->dev, "Controller reports " 3621 "max supported commands of %d, an obvious lie. " 3622 "Using 16. Ensure that firmware is up to date.\n", 3623 h->max_commands); 3624 h->max_commands = 16; 3625 } 3626 } 3627 3628 /* Interrogate the hardware for some limits: 3629 * max commands, max SG elements without chaining, and with chaining, 3630 * SG chain block size, etc. 3631 */ 3632 static void __devinit hpsa_find_board_params(struct ctlr_info *h) 3633 { 3634 hpsa_get_max_perf_mode_cmds(h); 3635 h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */ 3636 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements)); 3637 /* 3638 * Limit in-command s/g elements to 32 save dma'able memory. 3639 * Howvever spec says if 0, use 31 3640 */ 3641 h->max_cmd_sg_entries = 31; 3642 if (h->maxsgentries > 512) { 3643 h->max_cmd_sg_entries = 32; 3644 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1; 3645 h->maxsgentries--; /* save one for chain pointer */ 3646 } else { 3647 h->maxsgentries = 31; /* default to traditional values */ 3648 h->chainsize = 0; 3649 } 3650 } 3651 3652 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h) 3653 { 3654 if ((readb(&h->cfgtable->Signature[0]) != 'C') || 3655 (readb(&h->cfgtable->Signature[1]) != 'I') || 3656 (readb(&h->cfgtable->Signature[2]) != 'S') || 3657 (readb(&h->cfgtable->Signature[3]) != 'S')) { 3658 dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); 3659 return false; 3660 } 3661 return true; 3662 } 3663 3664 /* Need to enable prefetch in the SCSI core for 6400 in x86 */ 3665 static inline void hpsa_enable_scsi_prefetch(struct ctlr_info *h) 3666 { 3667 #ifdef CONFIG_X86 3668 u32 prefetch; 3669 3670 prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); 3671 prefetch |= 0x100; 3672 writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); 3673 #endif 3674 } 3675 3676 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result 3677 * in a prefetch beyond physical memory. 3678 */ 3679 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h) 3680 { 3681 u32 dma_prefetch; 3682 3683 if (h->board_id != 0x3225103C) 3684 return; 3685 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); 3686 dma_prefetch |= 0x8000; 3687 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); 3688 } 3689 3690 static void __devinit hpsa_wait_for_mode_change_ack(struct ctlr_info *h) 3691 { 3692 int i; 3693 u32 doorbell_value; 3694 unsigned long flags; 3695 3696 /* under certain very rare conditions, this can take awhile. 3697 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right 3698 * as we enter this code.) 3699 */ 3700 for (i = 0; i < MAX_CONFIG_WAIT; i++) { 3701 spin_lock_irqsave(&h->lock, flags); 3702 doorbell_value = readl(h->vaddr + SA5_DOORBELL); 3703 spin_unlock_irqrestore(&h->lock, flags); 3704 if (!(doorbell_value & CFGTBL_ChangeReq)) 3705 break; 3706 /* delay and try again */ 3707 usleep_range(10000, 20000); 3708 } 3709 } 3710 3711 static int __devinit hpsa_enter_simple_mode(struct ctlr_info *h) 3712 { 3713 u32 trans_support; 3714 3715 trans_support = readl(&(h->cfgtable->TransportSupport)); 3716 if (!(trans_support & SIMPLE_MODE)) 3717 return -ENOTSUPP; 3718 3719 h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); 3720 /* Update the field, and then ring the doorbell */ 3721 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); 3722 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 3723 hpsa_wait_for_mode_change_ack(h); 3724 print_cfg_table(&h->pdev->dev, h->cfgtable); 3725 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { 3726 dev_warn(&h->pdev->dev, 3727 "unable to get board into simple mode\n"); 3728 return -ENODEV; 3729 } 3730 h->transMethod = CFGTBL_Trans_Simple; 3731 return 0; 3732 } 3733 3734 static int __devinit hpsa_pci_init(struct ctlr_info *h) 3735 { 3736 int prod_index, err; 3737 3738 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id); 3739 if (prod_index < 0) 3740 return -ENODEV; 3741 h->product_name = products[prod_index].product_name; 3742 h->access = *(products[prod_index].access); 3743 3744 if (hpsa_board_disabled(h->pdev)) { 3745 dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); 3746 return -ENODEV; 3747 } 3748 err = pci_enable_device(h->pdev); 3749 if (err) { 3750 dev_warn(&h->pdev->dev, "unable to enable PCI device\n"); 3751 return err; 3752 } 3753 3754 err = pci_request_regions(h->pdev, "hpsa"); 3755 if (err) { 3756 dev_err(&h->pdev->dev, 3757 "cannot obtain PCI resources, aborting\n"); 3758 return err; 3759 } 3760 hpsa_interrupt_mode(h); 3761 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); 3762 if (err) 3763 goto err_out_free_res; 3764 h->vaddr = remap_pci_mem(h->paddr, 0x250); 3765 if (!h->vaddr) { 3766 err = -ENOMEM; 3767 goto err_out_free_res; 3768 } 3769 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); 3770 if (err) 3771 goto err_out_free_res; 3772 err = hpsa_find_cfgtables(h); 3773 if (err) 3774 goto err_out_free_res; 3775 hpsa_find_board_params(h); 3776 3777 if (!hpsa_CISS_signature_present(h)) { 3778 err = -ENODEV; 3779 goto err_out_free_res; 3780 } 3781 hpsa_enable_scsi_prefetch(h); 3782 hpsa_p600_dma_prefetch_quirk(h); 3783 err = hpsa_enter_simple_mode(h); 3784 if (err) 3785 goto err_out_free_res; 3786 return 0; 3787 3788 err_out_free_res: 3789 if (h->transtable) 3790 iounmap(h->transtable); 3791 if (h->cfgtable) 3792 iounmap(h->cfgtable); 3793 if (h->vaddr) 3794 iounmap(h->vaddr); 3795 /* 3796 * Deliberately omit pci_disable_device(): it does something nasty to 3797 * Smart Array controllers that pci_enable_device does not undo 3798 */ 3799 pci_release_regions(h->pdev); 3800 return err; 3801 } 3802 3803 static void __devinit hpsa_hba_inquiry(struct ctlr_info *h) 3804 { 3805 int rc; 3806 3807 #define HBA_INQUIRY_BYTE_COUNT 64 3808 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL); 3809 if (!h->hba_inquiry_data) 3810 return; 3811 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0, 3812 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT); 3813 if (rc != 0) { 3814 kfree(h->hba_inquiry_data); 3815 h->hba_inquiry_data = NULL; 3816 } 3817 } 3818 3819 static __devinit int hpsa_init_reset_devices(struct pci_dev *pdev) 3820 { 3821 int rc, i; 3822 3823 if (!reset_devices) 3824 return 0; 3825 3826 /* Reset the controller with a PCI power-cycle or via doorbell */ 3827 rc = hpsa_kdump_hard_reset_controller(pdev); 3828 3829 /* -ENOTSUPP here means we cannot reset the controller 3830 * but it's already (and still) up and running in 3831 * "performant mode". Or, it might be 640x, which can't reset 3832 * due to concerns about shared bbwc between 6402/6404 pair. 3833 */ 3834 if (rc == -ENOTSUPP) 3835 return 0; /* just try to do the kdump anyhow. */ 3836 if (rc) 3837 return -ENODEV; 3838 3839 /* Now try to get the controller to respond to a no-op */ 3840 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) { 3841 if (hpsa_noop(pdev) == 0) 3842 break; 3843 else 3844 dev_warn(&pdev->dev, "no-op failed%s\n", 3845 (i < 11 ? "; re-trying" : "")); 3846 } 3847 return 0; 3848 } 3849 3850 static __devinit int hpsa_allocate_cmd_pool(struct ctlr_info *h) 3851 { 3852 h->cmd_pool_bits = kzalloc( 3853 DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) * 3854 sizeof(unsigned long), GFP_KERNEL); 3855 h->cmd_pool = pci_alloc_consistent(h->pdev, 3856 h->nr_cmds * sizeof(*h->cmd_pool), 3857 &(h->cmd_pool_dhandle)); 3858 h->errinfo_pool = pci_alloc_consistent(h->pdev, 3859 h->nr_cmds * sizeof(*h->errinfo_pool), 3860 &(h->errinfo_pool_dhandle)); 3861 if ((h->cmd_pool_bits == NULL) 3862 || (h->cmd_pool == NULL) 3863 || (h->errinfo_pool == NULL)) { 3864 dev_err(&h->pdev->dev, "out of memory in %s", __func__); 3865 return -ENOMEM; 3866 } 3867 return 0; 3868 } 3869 3870 static void hpsa_free_cmd_pool(struct ctlr_info *h) 3871 { 3872 kfree(h->cmd_pool_bits); 3873 if (h->cmd_pool) 3874 pci_free_consistent(h->pdev, 3875 h->nr_cmds * sizeof(struct CommandList), 3876 h->cmd_pool, h->cmd_pool_dhandle); 3877 if (h->errinfo_pool) 3878 pci_free_consistent(h->pdev, 3879 h->nr_cmds * sizeof(struct ErrorInfo), 3880 h->errinfo_pool, 3881 h->errinfo_pool_dhandle); 3882 } 3883 3884 static int __devinit hpsa_init_one(struct pci_dev *pdev, 3885 const struct pci_device_id *ent) 3886 { 3887 int dac, rc; 3888 struct ctlr_info *h; 3889 3890 if (number_of_controllers == 0) 3891 printk(KERN_INFO DRIVER_NAME "\n"); 3892 3893 rc = hpsa_init_reset_devices(pdev); 3894 if (rc) 3895 return rc; 3896 3897 /* Command structures must be aligned on a 32-byte boundary because 3898 * the 5 lower bits of the address are used by the hardware. and by 3899 * the driver. See comments in hpsa.h for more info. 3900 */ 3901 #define COMMANDLIST_ALIGNMENT 32 3902 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); 3903 h = kzalloc(sizeof(*h), GFP_KERNEL); 3904 if (!h) 3905 return -ENOMEM; 3906 3907 h->pdev = pdev; 3908 h->busy_initializing = 1; 3909 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT; 3910 INIT_LIST_HEAD(&h->cmpQ); 3911 INIT_LIST_HEAD(&h->reqQ); 3912 spin_lock_init(&h->lock); 3913 spin_lock_init(&h->scan_lock); 3914 rc = hpsa_pci_init(h); 3915 if (rc != 0) 3916 goto clean1; 3917 3918 sprintf(h->devname, "hpsa%d", number_of_controllers); 3919 h->ctlr = number_of_controllers; 3920 number_of_controllers++; 3921 3922 /* configure PCI DMA stuff */ 3923 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 3924 if (rc == 0) { 3925 dac = 1; 3926 } else { 3927 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 3928 if (rc == 0) { 3929 dac = 0; 3930 } else { 3931 dev_err(&pdev->dev, "no suitable DMA available\n"); 3932 goto clean1; 3933 } 3934 } 3935 3936 /* make sure the board interrupts are off */ 3937 h->access.set_intr_mask(h, HPSA_INTR_OFF); 3938 3939 if (h->msix_vector || h->msi_vector) 3940 rc = request_irq(h->intr[h->intr_mode], do_hpsa_intr_msi, 3941 IRQF_DISABLED, h->devname, h); 3942 else 3943 rc = request_irq(h->intr[h->intr_mode], do_hpsa_intr_intx, 3944 IRQF_DISABLED, h->devname, h); 3945 if (rc) { 3946 dev_err(&pdev->dev, "unable to get irq %d for %s\n", 3947 h->intr[h->intr_mode], h->devname); 3948 goto clean2; 3949 } 3950 3951 dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n", 3952 h->devname, pdev->device, 3953 h->intr[h->intr_mode], dac ? "" : " not"); 3954 if (hpsa_allocate_cmd_pool(h)) 3955 goto clean4; 3956 if (hpsa_allocate_sg_chain_blocks(h)) 3957 goto clean4; 3958 init_waitqueue_head(&h->scan_wait_queue); 3959 h->scan_finished = 1; /* no scan currently in progress */ 3960 3961 pci_set_drvdata(pdev, h); 3962 hpsa_scsi_setup(h); 3963 3964 /* Turn the interrupts on so we can service requests */ 3965 h->access.set_intr_mask(h, HPSA_INTR_ON); 3966 3967 hpsa_put_ctlr_into_performant_mode(h); 3968 hpsa_hba_inquiry(h); 3969 hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ 3970 h->busy_initializing = 0; 3971 return 1; 3972 3973 clean4: 3974 hpsa_free_sg_chain_blocks(h); 3975 hpsa_free_cmd_pool(h); 3976 free_irq(h->intr[h->intr_mode], h); 3977 clean2: 3978 clean1: 3979 h->busy_initializing = 0; 3980 kfree(h); 3981 return rc; 3982 } 3983 3984 static void hpsa_flush_cache(struct ctlr_info *h) 3985 { 3986 char *flush_buf; 3987 struct CommandList *c; 3988 3989 flush_buf = kzalloc(4, GFP_KERNEL); 3990 if (!flush_buf) 3991 return; 3992 3993 c = cmd_special_alloc(h); 3994 if (!c) { 3995 dev_warn(&h->pdev->dev, "cmd_special_alloc returned NULL!\n"); 3996 goto out_of_memory; 3997 } 3998 fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, 3999 RAID_CTLR_LUNID, TYPE_CMD); 4000 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE); 4001 if (c->err_info->CommandStatus != 0) 4002 dev_warn(&h->pdev->dev, 4003 "error flushing cache on controller\n"); 4004 cmd_special_free(h, c); 4005 out_of_memory: 4006 kfree(flush_buf); 4007 } 4008 4009 static void hpsa_shutdown(struct pci_dev *pdev) 4010 { 4011 struct ctlr_info *h; 4012 4013 h = pci_get_drvdata(pdev); 4014 /* Turn board interrupts off and send the flush cache command 4015 * sendcmd will turn off interrupt, and send the flush... 4016 * To write all data in the battery backed cache to disks 4017 */ 4018 hpsa_flush_cache(h); 4019 h->access.set_intr_mask(h, HPSA_INTR_OFF); 4020 free_irq(h->intr[h->intr_mode], h); 4021 #ifdef CONFIG_PCI_MSI 4022 if (h->msix_vector) 4023 pci_disable_msix(h->pdev); 4024 else if (h->msi_vector) 4025 pci_disable_msi(h->pdev); 4026 #endif /* CONFIG_PCI_MSI */ 4027 } 4028 4029 static void __devexit hpsa_remove_one(struct pci_dev *pdev) 4030 { 4031 struct ctlr_info *h; 4032 4033 if (pci_get_drvdata(pdev) == NULL) { 4034 dev_err(&pdev->dev, "unable to remove device \n"); 4035 return; 4036 } 4037 h = pci_get_drvdata(pdev); 4038 hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ 4039 hpsa_shutdown(pdev); 4040 iounmap(h->vaddr); 4041 iounmap(h->transtable); 4042 iounmap(h->cfgtable); 4043 hpsa_free_sg_chain_blocks(h); 4044 pci_free_consistent(h->pdev, 4045 h->nr_cmds * sizeof(struct CommandList), 4046 h->cmd_pool, h->cmd_pool_dhandle); 4047 pci_free_consistent(h->pdev, 4048 h->nr_cmds * sizeof(struct ErrorInfo), 4049 h->errinfo_pool, h->errinfo_pool_dhandle); 4050 pci_free_consistent(h->pdev, h->reply_pool_size, 4051 h->reply_pool, h->reply_pool_dhandle); 4052 kfree(h->cmd_pool_bits); 4053 kfree(h->blockFetchTable); 4054 kfree(h->hba_inquiry_data); 4055 /* 4056 * Deliberately omit pci_disable_device(): it does something nasty to 4057 * Smart Array controllers that pci_enable_device does not undo 4058 */ 4059 pci_release_regions(pdev); 4060 pci_set_drvdata(pdev, NULL); 4061 kfree(h); 4062 } 4063 4064 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, 4065 __attribute__((unused)) pm_message_t state) 4066 { 4067 return -ENOSYS; 4068 } 4069 4070 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev) 4071 { 4072 return -ENOSYS; 4073 } 4074 4075 static struct pci_driver hpsa_pci_driver = { 4076 .name = "hpsa", 4077 .probe = hpsa_init_one, 4078 .remove = __devexit_p(hpsa_remove_one), 4079 .id_table = hpsa_pci_device_id, /* id_table */ 4080 .shutdown = hpsa_shutdown, 4081 .suspend = hpsa_suspend, 4082 .resume = hpsa_resume, 4083 }; 4084 4085 /* Fill in bucket_map[], given nsgs (the max number of 4086 * scatter gather elements supported) and bucket[], 4087 * which is an array of 8 integers. The bucket[] array 4088 * contains 8 different DMA transfer sizes (in 16 4089 * byte increments) which the controller uses to fetch 4090 * commands. This function fills in bucket_map[], which 4091 * maps a given number of scatter gather elements to one of 4092 * the 8 DMA transfer sizes. The point of it is to allow the 4093 * controller to only do as much DMA as needed to fetch the 4094 * command, with the DMA transfer size encoded in the lower 4095 * bits of the command address. 4096 */ 4097 static void calc_bucket_map(int bucket[], int num_buckets, 4098 int nsgs, int *bucket_map) 4099 { 4100 int i, j, b, size; 4101 4102 /* even a command with 0 SGs requires 4 blocks */ 4103 #define MINIMUM_TRANSFER_BLOCKS 4 4104 #define NUM_BUCKETS 8 4105 /* Note, bucket_map must have nsgs+1 entries. */ 4106 for (i = 0; i <= nsgs; i++) { 4107 /* Compute size of a command with i SG entries */ 4108 size = i + MINIMUM_TRANSFER_BLOCKS; 4109 b = num_buckets; /* Assume the biggest bucket */ 4110 /* Find the bucket that is just big enough */ 4111 for (j = 0; j < 8; j++) { 4112 if (bucket[j] >= size) { 4113 b = j; 4114 break; 4115 } 4116 } 4117 /* for a command with i SG entries, use bucket b. */ 4118 bucket_map[i] = b; 4119 } 4120 } 4121 4122 static __devinit void hpsa_enter_performant_mode(struct ctlr_info *h, 4123 u32 use_short_tags) 4124 { 4125 int i; 4126 unsigned long register_value; 4127 4128 /* This is a bit complicated. There are 8 registers on 4129 * the controller which we write to to tell it 8 different 4130 * sizes of commands which there may be. It's a way of 4131 * reducing the DMA done to fetch each command. Encoded into 4132 * each command's tag are 3 bits which communicate to the controller 4133 * which of the eight sizes that command fits within. The size of 4134 * each command depends on how many scatter gather entries there are. 4135 * Each SG entry requires 16 bytes. The eight registers are programmed 4136 * with the number of 16-byte blocks a command of that size requires. 4137 * The smallest command possible requires 5 such 16 byte blocks. 4138 * the largest command possible requires MAXSGENTRIES + 4 16-byte 4139 * blocks. Note, this only extends to the SG entries contained 4140 * within the command block, and does not extend to chained blocks 4141 * of SG elements. bft[] contains the eight values we write to 4142 * the registers. They are not evenly distributed, but have more 4143 * sizes for small commands, and fewer sizes for larger commands. 4144 */ 4145 int bft[8] = {5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; 4146 BUILD_BUG_ON(28 > MAXSGENTRIES + 4); 4147 /* 5 = 1 s/g entry or 4k 4148 * 6 = 2 s/g entry or 8k 4149 * 8 = 4 s/g entry or 16k 4150 * 10 = 6 s/g entry or 24k 4151 */ 4152 4153 h->reply_pool_wraparound = 1; /* spec: init to 1 */ 4154 4155 /* Controller spec: zero out this buffer. */ 4156 memset(h->reply_pool, 0, h->reply_pool_size); 4157 h->reply_pool_head = h->reply_pool; 4158 4159 bft[7] = h->max_sg_entries + 4; 4160 calc_bucket_map(bft, ARRAY_SIZE(bft), 32, h->blockFetchTable); 4161 for (i = 0; i < 8; i++) 4162 writel(bft[i], &h->transtable->BlockFetch[i]); 4163 4164 /* size of controller ring buffer */ 4165 writel(h->max_commands, &h->transtable->RepQSize); 4166 writel(1, &h->transtable->RepQCount); 4167 writel(0, &h->transtable->RepQCtrAddrLow32); 4168 writel(0, &h->transtable->RepQCtrAddrHigh32); 4169 writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); 4170 writel(0, &h->transtable->RepQAddr0High32); 4171 writel(CFGTBL_Trans_Performant | use_short_tags, 4172 &(h->cfgtable->HostWrite.TransportRequest)); 4173 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); 4174 hpsa_wait_for_mode_change_ack(h); 4175 register_value = readl(&(h->cfgtable->TransportActive)); 4176 if (!(register_value & CFGTBL_Trans_Performant)) { 4177 dev_warn(&h->pdev->dev, "unable to get board into" 4178 " performant mode\n"); 4179 return; 4180 } 4181 /* Change the access methods to the performant access methods */ 4182 h->access = SA5_performant_access; 4183 h->transMethod = CFGTBL_Trans_Performant; 4184 } 4185 4186 static __devinit void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) 4187 { 4188 u32 trans_support; 4189 4190 if (hpsa_simple_mode) 4191 return; 4192 4193 trans_support = readl(&(h->cfgtable->TransportSupport)); 4194 if (!(trans_support & PERFORMANT_MODE)) 4195 return; 4196 4197 hpsa_get_max_perf_mode_cmds(h); 4198 h->max_sg_entries = 32; 4199 /* Performant mode ring buffer and supporting data structures */ 4200 h->reply_pool_size = h->max_commands * sizeof(u64); 4201 h->reply_pool = pci_alloc_consistent(h->pdev, h->reply_pool_size, 4202 &(h->reply_pool_dhandle)); 4203 4204 /* Need a block fetch table for performant mode */ 4205 h->blockFetchTable = kmalloc(((h->max_sg_entries+1) * 4206 sizeof(u32)), GFP_KERNEL); 4207 4208 if ((h->reply_pool == NULL) 4209 || (h->blockFetchTable == NULL)) 4210 goto clean_up; 4211 4212 hpsa_enter_performant_mode(h, 4213 trans_support & CFGTBL_Trans_use_short_tags); 4214 4215 return; 4216 4217 clean_up: 4218 if (h->reply_pool) 4219 pci_free_consistent(h->pdev, h->reply_pool_size, 4220 h->reply_pool, h->reply_pool_dhandle); 4221 kfree(h->blockFetchTable); 4222 } 4223 4224 /* 4225 * This is it. Register the PCI driver information for the cards we control 4226 * the OS will call our registered routines when it finds one of our cards. 4227 */ 4228 static int __init hpsa_init(void) 4229 { 4230 return pci_register_driver(&hpsa_pci_driver); 4231 } 4232 4233 static void __exit hpsa_cleanup(void) 4234 { 4235 pci_unregister_driver(&hpsa_pci_driver); 4236 } 4237 4238 module_init(hpsa_init); 4239 module_exit(hpsa_cleanup); 4240