1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Linux MegaRAID device driver 5 * 6 * Copyright (c) 2002 LSI Logic Corporation. 7 * 8 * Copyright (c) 2002 Red Hat, Inc. All rights reserved. 9 * - fixes 10 * - speed-ups (list handling fixes, issued_list, optimizations.) 11 * - lots of cleanups. 12 * 13 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de> 14 * - new-style, hotplug-aware pci probing and scsi registration 15 * 16 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju 17 * <Seokmann.Ju@lsil.com> 18 * 19 * Description: Linux device driver for LSI Logic MegaRAID controller 20 * 21 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 22 * 518, 520, 531, 532 23 * 24 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell, 25 * and others. Please send updates to the mailing list 26 * linux-scsi@vger.kernel.org . 27 */ 28 29 #include <linux/mm.h> 30 #include <linux/fs.h> 31 #include <linux/blkdev.h> 32 #include <linux/uaccess.h> 33 #include <asm/io.h> 34 #include <linux/completion.h> 35 #include <linux/delay.h> 36 #include <linux/proc_fs.h> 37 #include <linux/seq_file.h> 38 #include <linux/reboot.h> 39 #include <linux/module.h> 40 #include <linux/list.h> 41 #include <linux/interrupt.h> 42 #include <linux/pci.h> 43 #include <linux/init.h> 44 #include <linux/dma-mapping.h> 45 #include <linux/mutex.h> 46 #include <linux/slab.h> 47 #include <scsi/scsicam.h> 48 49 #include "scsi.h" 50 #include <scsi/scsi_host.h> 51 52 #include "megaraid.h" 53 54 #define MEGARAID_MODULE_VERSION "2.00.4" 55 56 MODULE_AUTHOR ("sju@lsil.com"); 57 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver"); 58 MODULE_LICENSE ("GPL"); 59 MODULE_VERSION(MEGARAID_MODULE_VERSION); 60 61 static DEFINE_MUTEX(megadev_mutex); 62 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; 63 module_param(max_cmd_per_lun, uint, 0); 64 MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)"); 65 66 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO; 67 module_param(max_sectors_per_io, ushort, 0); 68 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)"); 69 70 71 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; 72 module_param(max_mbox_busy_wait, ushort, 0); 73 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)"); 74 75 #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20) 76 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C) 77 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20) 78 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C) 79 80 /* 81 * Global variables 82 */ 83 84 static int hba_count; 85 static adapter_t *hba_soft_state[MAX_CONTROLLERS]; 86 static struct proc_dir_entry *mega_proc_dir_entry; 87 88 /* For controller re-ordering */ 89 static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; 90 91 static long 92 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); 93 94 /* 95 * The File Operations structure for the serial/ioctl interface of the driver 96 */ 97 static const struct file_operations megadev_fops = { 98 .owner = THIS_MODULE, 99 .unlocked_ioctl = megadev_unlocked_ioctl, 100 .open = megadev_open, 101 .llseek = noop_llseek, 102 }; 103 104 /* 105 * Array to structures for storing the information about the controllers. This 106 * information is sent to the user level applications, when they do an ioctl 107 * for this information. 108 */ 109 static struct mcontroller mcontroller[MAX_CONTROLLERS]; 110 111 /* The current driver version */ 112 static u32 driver_ver = 0x02000000; 113 114 /* major number used by the device for character interface */ 115 static int major; 116 117 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01) 118 119 120 /* 121 * Debug variable to print some diagnostic messages 122 */ 123 static int trace_level; 124 125 /** 126 * mega_setup_mailbox() 127 * @adapter - pointer to our soft state 128 * 129 * Allocates a 8 byte aligned memory for the handshake mailbox. 130 */ 131 static int 132 mega_setup_mailbox(adapter_t *adapter) 133 { 134 unsigned long align; 135 136 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev, 137 sizeof(mbox64_t), &adapter->una_mbox64_dma); 138 139 if( !adapter->una_mbox64 ) return -1; 140 141 adapter->mbox = &adapter->una_mbox64->mbox; 142 143 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & 144 (~0UL ^ 0xFUL)); 145 146 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); 147 148 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); 149 150 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; 151 152 /* 153 * Register the mailbox if the controller is an io-mapped controller 154 */ 155 if( adapter->flag & BOARD_IOMAP ) { 156 157 outb(adapter->mbox_dma & 0xFF, 158 adapter->host->io_port + MBOX_PORT0); 159 160 outb((adapter->mbox_dma >> 8) & 0xFF, 161 adapter->host->io_port + MBOX_PORT1); 162 163 outb((adapter->mbox_dma >> 16) & 0xFF, 164 adapter->host->io_port + MBOX_PORT2); 165 166 outb((adapter->mbox_dma >> 24) & 0xFF, 167 adapter->host->io_port + MBOX_PORT3); 168 169 outb(ENABLE_MBOX_BYTE, 170 adapter->host->io_port + ENABLE_MBOX_REGION); 171 172 irq_ack(adapter); 173 174 irq_enable(adapter); 175 } 176 177 return 0; 178 } 179 180 181 /* 182 * mega_query_adapter() 183 * @adapter - pointer to our soft state 184 * 185 * Issue the adapter inquiry commands to the controller and find out 186 * information and parameter about the devices attached 187 */ 188 static int 189 mega_query_adapter(adapter_t *adapter) 190 { 191 dma_addr_t prod_info_dma_handle; 192 mega_inquiry3 *inquiry3; 193 u8 raw_mbox[sizeof(struct mbox_out)]; 194 mbox_t *mbox; 195 int retval; 196 197 /* Initialize adapter inquiry mailbox */ 198 199 mbox = (mbox_t *)raw_mbox; 200 201 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 202 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 203 204 /* 205 * Try to issue Inquiry3 command 206 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and 207 * update enquiry3 structure 208 */ 209 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 210 211 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; 212 213 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 214 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ 215 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ 216 217 /* Issue a blocking command to the card */ 218 if ((retval = issue_scb_block(adapter, raw_mbox))) { 219 /* the adapter does not support 40ld */ 220 221 mraid_ext_inquiry *ext_inq; 222 mraid_inquiry *inq; 223 dma_addr_t dma_handle; 224 225 ext_inq = pci_alloc_consistent(adapter->dev, 226 sizeof(mraid_ext_inquiry), &dma_handle); 227 228 if( ext_inq == NULL ) return -1; 229 230 inq = &ext_inq->raid_inq; 231 232 mbox->m_out.xferaddr = (u32)dma_handle; 233 234 /*issue old 0x04 command to adapter */ 235 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ; 236 237 issue_scb_block(adapter, raw_mbox); 238 239 /* 240 * update Enquiry3 and ProductInfo structures with 241 * mraid_inquiry structure 242 */ 243 mega_8_to_40ld(inq, inquiry3, 244 (mega_product_info *)&adapter->product_info); 245 246 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry), 247 ext_inq, dma_handle); 248 249 } else { /*adapter supports 40ld */ 250 adapter->flag |= BOARD_40LD; 251 252 /* 253 * get product_info, which is static information and will be 254 * unchanged 255 */ 256 prod_info_dma_handle = pci_map_single(adapter->dev, (void *) 257 &adapter->product_info, 258 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 259 260 mbox->m_out.xferaddr = prod_info_dma_handle; 261 262 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 263 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ 264 265 if ((retval = issue_scb_block(adapter, raw_mbox))) 266 dev_warn(&adapter->dev->dev, 267 "Product_info cmd failed with error: %d\n", 268 retval); 269 270 pci_unmap_single(adapter->dev, prod_info_dma_handle, 271 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 272 } 273 274 275 /* 276 * kernel scans the channels from 0 to <= max_channel 277 */ 278 adapter->host->max_channel = 279 adapter->product_info.nchannels + NVIRT_CHAN -1; 280 281 adapter->host->max_id = 16; /* max targets per channel */ 282 283 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */ 284 285 adapter->host->cmd_per_lun = max_cmd_per_lun; 286 287 adapter->numldrv = inquiry3->num_ldrv; 288 289 adapter->max_cmds = adapter->product_info.max_commands; 290 291 if(adapter->max_cmds > MAX_COMMANDS) 292 adapter->max_cmds = MAX_COMMANDS; 293 294 adapter->host->can_queue = adapter->max_cmds - 1; 295 296 /* 297 * Get the maximum number of scatter-gather elements supported by this 298 * firmware 299 */ 300 mega_get_max_sgl(adapter); 301 302 adapter->host->sg_tablesize = adapter->sglen; 303 304 /* use HP firmware and bios version encoding 305 Note: fw_version[0|1] and bios_version[0|1] were originally shifted 306 right 8 bits making them zero. This 0 value was hardcoded to fix 307 sparse warnings. */ 308 if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) { 309 snprintf(adapter->fw_version, sizeof(adapter->fw_version), 310 "%c%d%d.%d%d", 311 adapter->product_info.fw_version[2], 312 0, 313 adapter->product_info.fw_version[1] & 0x0f, 314 0, 315 adapter->product_info.fw_version[0] & 0x0f); 316 snprintf(adapter->bios_version, sizeof(adapter->fw_version), 317 "%c%d%d.%d%d", 318 adapter->product_info.bios_version[2], 319 0, 320 adapter->product_info.bios_version[1] & 0x0f, 321 0, 322 adapter->product_info.bios_version[0] & 0x0f); 323 } else { 324 memcpy(adapter->fw_version, 325 (char *)adapter->product_info.fw_version, 4); 326 adapter->fw_version[4] = 0; 327 328 memcpy(adapter->bios_version, 329 (char *)adapter->product_info.bios_version, 4); 330 331 adapter->bios_version[4] = 0; 332 } 333 334 dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n", 335 adapter->fw_version, adapter->bios_version, adapter->numldrv); 336 337 /* 338 * Do we support extended (>10 bytes) cdbs 339 */ 340 adapter->support_ext_cdb = mega_support_ext_cdb(adapter); 341 if (adapter->support_ext_cdb) 342 dev_notice(&adapter->dev->dev, "supports extended CDBs\n"); 343 344 345 return 0; 346 } 347 348 /** 349 * mega_runpendq() 350 * @adapter - pointer to our soft state 351 * 352 * Runs through the list of pending requests. 353 */ 354 static inline void 355 mega_runpendq(adapter_t *adapter) 356 { 357 if(!list_empty(&adapter->pending_list)) 358 __mega_runpendq(adapter); 359 } 360 361 /* 362 * megaraid_queue() 363 * @scmd - Issue this scsi command 364 * @done - the callback hook into the scsi mid-layer 365 * 366 * The command queuing entry point for the mid-layer. 367 */ 368 static int 369 megaraid_queue_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *)) 370 { 371 adapter_t *adapter; 372 scb_t *scb; 373 int busy=0; 374 unsigned long flags; 375 376 adapter = (adapter_t *)scmd->device->host->hostdata; 377 378 scmd->scsi_done = done; 379 380 381 /* 382 * Allocate and build a SCB request 383 * busy flag will be set if mega_build_cmd() command could not 384 * allocate scb. We will return non-zero status in that case. 385 * NOTE: scb can be null even though certain commands completed 386 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would 387 * return 0 in that case. 388 */ 389 390 spin_lock_irqsave(&adapter->lock, flags); 391 scb = mega_build_cmd(adapter, scmd, &busy); 392 if (!scb) 393 goto out; 394 395 scb->state |= SCB_PENDQ; 396 list_add_tail(&scb->list, &adapter->pending_list); 397 398 /* 399 * Check if the HBA is in quiescent state, e.g., during a 400 * delete logical drive opertion. If it is, don't run 401 * the pending_list. 402 */ 403 if (atomic_read(&adapter->quiescent) == 0) 404 mega_runpendq(adapter); 405 406 busy = 0; 407 out: 408 spin_unlock_irqrestore(&adapter->lock, flags); 409 return busy; 410 } 411 412 static DEF_SCSI_QCMD(megaraid_queue) 413 414 /** 415 * mega_allocate_scb() 416 * @adapter - pointer to our soft state 417 * @cmd - scsi command from the mid-layer 418 * 419 * Allocate a SCB structure. This is the central structure for controller 420 * commands. 421 */ 422 static inline scb_t * 423 mega_allocate_scb(adapter_t *adapter, struct scsi_cmnd *cmd) 424 { 425 struct list_head *head = &adapter->free_list; 426 scb_t *scb; 427 428 /* Unlink command from Free List */ 429 if( !list_empty(head) ) { 430 431 scb = list_entry(head->next, scb_t, list); 432 433 list_del_init(head->next); 434 435 scb->state = SCB_ACTIVE; 436 scb->cmd = cmd; 437 scb->dma_type = MEGA_DMA_TYPE_NONE; 438 439 return scb; 440 } 441 442 return NULL; 443 } 444 445 /** 446 * mega_get_ldrv_num() 447 * @adapter - pointer to our soft state 448 * @cmd - scsi mid layer command 449 * @channel - channel on the controller 450 * 451 * Calculate the logical drive number based on the information in scsi command 452 * and the channel number. 453 */ 454 static inline int 455 mega_get_ldrv_num(adapter_t *adapter, struct scsi_cmnd *cmd, int channel) 456 { 457 int tgt; 458 int ldrv_num; 459 460 tgt = cmd->device->id; 461 462 if ( tgt > adapter->this_id ) 463 tgt--; /* we do not get inquires for initiator id */ 464 465 ldrv_num = (channel * 15) + tgt; 466 467 468 /* 469 * If we have a logical drive with boot enabled, project it first 470 */ 471 if( adapter->boot_ldrv_enabled ) { 472 if( ldrv_num == 0 ) { 473 ldrv_num = adapter->boot_ldrv; 474 } 475 else { 476 if( ldrv_num <= adapter->boot_ldrv ) { 477 ldrv_num--; 478 } 479 } 480 } 481 482 /* 483 * If "delete logical drive" feature is enabled on this controller. 484 * Do only if at least one delete logical drive operation was done. 485 * 486 * Also, after logical drive deletion, instead of logical drive number, 487 * the value returned should be 0x80+logical drive id. 488 * 489 * These is valid only for IO commands. 490 */ 491 492 if (adapter->support_random_del && adapter->read_ldidmap ) 493 switch (cmd->cmnd[0]) { 494 case READ_6: /* fall through */ 495 case WRITE_6: /* fall through */ 496 case READ_10: /* fall through */ 497 case WRITE_10: 498 ldrv_num += 0x80; 499 } 500 501 return ldrv_num; 502 } 503 504 /** 505 * mega_build_cmd() 506 * @adapter - pointer to our soft state 507 * @cmd - Prepare using this scsi command 508 * @busy - busy flag if no resources 509 * 510 * Prepares a command and scatter gather list for the controller. This routine 511 * also finds out if the commands is intended for a logical drive or a 512 * physical device and prepares the controller command accordingly. 513 * 514 * We also re-order the logical drives and physical devices based on their 515 * boot settings. 516 */ 517 static scb_t * 518 mega_build_cmd(adapter_t *adapter, struct scsi_cmnd *cmd, int *busy) 519 { 520 mega_ext_passthru *epthru; 521 mega_passthru *pthru; 522 scb_t *scb; 523 mbox_t *mbox; 524 u32 seg; 525 char islogical; 526 int max_ldrv_num; 527 int channel = 0; 528 int target = 0; 529 int ldrv_num = 0; /* logical drive number */ 530 531 /* 532 * We know what channels our logical drives are on - mega_find_card() 533 */ 534 islogical = adapter->logdrv_chan[cmd->device->channel]; 535 536 /* 537 * The theory: If physical drive is chosen for boot, all the physical 538 * devices are exported before the logical drives, otherwise physical 539 * devices are pushed after logical drives, in which case - Kernel sees 540 * the physical devices on virtual channel which is obviously converted 541 * to actual channel on the HBA. 542 */ 543 if( adapter->boot_pdrv_enabled ) { 544 if( islogical ) { 545 /* logical channel */ 546 channel = cmd->device->channel - 547 adapter->product_info.nchannels; 548 } 549 else { 550 /* this is physical channel */ 551 channel = cmd->device->channel; 552 target = cmd->device->id; 553 554 /* 555 * boot from a physical disk, that disk needs to be 556 * exposed first IF both the channels are SCSI, then 557 * booting from the second channel is not allowed. 558 */ 559 if( target == 0 ) { 560 target = adapter->boot_pdrv_tgt; 561 } 562 else if( target == adapter->boot_pdrv_tgt ) { 563 target = 0; 564 } 565 } 566 } 567 else { 568 if( islogical ) { 569 /* this is the logical channel */ 570 channel = cmd->device->channel; 571 } 572 else { 573 /* physical channel */ 574 channel = cmd->device->channel - NVIRT_CHAN; 575 target = cmd->device->id; 576 } 577 } 578 579 580 if(islogical) { 581 582 /* have just LUN 0 for each target on virtual channels */ 583 if (cmd->device->lun) { 584 cmd->result = (DID_BAD_TARGET << 16); 585 cmd->scsi_done(cmd); 586 return NULL; 587 } 588 589 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 590 591 592 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 593 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 594 595 /* 596 * max_ldrv_num increases by 0x80 if some logical drive was 597 * deleted. 598 */ 599 if(adapter->read_ldidmap) 600 max_ldrv_num += 0x80; 601 602 if(ldrv_num > max_ldrv_num ) { 603 cmd->result = (DID_BAD_TARGET << 16); 604 cmd->scsi_done(cmd); 605 return NULL; 606 } 607 608 } 609 else { 610 if( cmd->device->lun > 7) { 611 /* 612 * Do not support lun >7 for physically accessed 613 * devices 614 */ 615 cmd->result = (DID_BAD_TARGET << 16); 616 cmd->scsi_done(cmd); 617 return NULL; 618 } 619 } 620 621 /* 622 * 623 * Logical drive commands 624 * 625 */ 626 if(islogical) { 627 switch (cmd->cmnd[0]) { 628 case TEST_UNIT_READY: 629 #if MEGA_HAVE_CLUSTERING 630 /* 631 * Do we support clustering and is the support enabled 632 * If no, return success always 633 */ 634 if( !adapter->has_cluster ) { 635 cmd->result = (DID_OK << 16); 636 cmd->scsi_done(cmd); 637 return NULL; 638 } 639 640 if(!(scb = mega_allocate_scb(adapter, cmd))) { 641 *busy = 1; 642 return NULL; 643 } 644 645 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 646 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 647 scb->raw_mbox[3] = ldrv_num; 648 649 scb->dma_direction = PCI_DMA_NONE; 650 651 return scb; 652 #else 653 cmd->result = (DID_OK << 16); 654 cmd->scsi_done(cmd); 655 return NULL; 656 #endif 657 658 case MODE_SENSE: { 659 char *buf; 660 struct scatterlist *sg; 661 662 sg = scsi_sglist(cmd); 663 buf = kmap_atomic(sg_page(sg)) + sg->offset; 664 665 memset(buf, 0, cmd->cmnd[4]); 666 kunmap_atomic(buf - sg->offset); 667 668 cmd->result = (DID_OK << 16); 669 cmd->scsi_done(cmd); 670 return NULL; 671 } 672 673 case READ_CAPACITY: 674 case INQUIRY: 675 676 if(!(adapter->flag & (1L << cmd->device->channel))) { 677 678 dev_notice(&adapter->dev->dev, 679 "scsi%d: scanning scsi channel %d " 680 "for logical drives\n", 681 adapter->host->host_no, 682 cmd->device->channel); 683 684 adapter->flag |= (1L << cmd->device->channel); 685 } 686 687 /* Allocate a SCB and initialize passthru */ 688 if(!(scb = mega_allocate_scb(adapter, cmd))) { 689 *busy = 1; 690 return NULL; 691 } 692 pthru = scb->pthru; 693 694 mbox = (mbox_t *)scb->raw_mbox; 695 memset(mbox, 0, sizeof(scb->raw_mbox)); 696 memset(pthru, 0, sizeof(mega_passthru)); 697 698 pthru->timeout = 0; 699 pthru->ars = 1; 700 pthru->reqsenselen = 14; 701 pthru->islogical = 1; 702 pthru->logdrv = ldrv_num; 703 pthru->cdblen = cmd->cmd_len; 704 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 705 706 if( adapter->has_64bit_addr ) { 707 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 708 } 709 else { 710 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 711 } 712 713 scb->dma_direction = PCI_DMA_FROMDEVICE; 714 715 pthru->numsgelements = mega_build_sglist(adapter, scb, 716 &pthru->dataxferaddr, &pthru->dataxferlen); 717 718 mbox->m_out.xferaddr = scb->pthru_dma_addr; 719 720 return scb; 721 722 case READ_6: 723 case WRITE_6: 724 case READ_10: 725 case WRITE_10: 726 case READ_12: 727 case WRITE_12: 728 729 /* Allocate a SCB and initialize mailbox */ 730 if(!(scb = mega_allocate_scb(adapter, cmd))) { 731 *busy = 1; 732 return NULL; 733 } 734 mbox = (mbox_t *)scb->raw_mbox; 735 736 memset(mbox, 0, sizeof(scb->raw_mbox)); 737 mbox->m_out.logdrv = ldrv_num; 738 739 /* 740 * A little hack: 2nd bit is zero for all scsi read 741 * commands and is set for all scsi write commands 742 */ 743 if( adapter->has_64bit_addr ) { 744 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 745 MEGA_MBOXCMD_LWRITE64: 746 MEGA_MBOXCMD_LREAD64 ; 747 } 748 else { 749 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 750 MEGA_MBOXCMD_LWRITE: 751 MEGA_MBOXCMD_LREAD ; 752 } 753 754 /* 755 * 6-byte READ(0x08) or WRITE(0x0A) cdb 756 */ 757 if( cmd->cmd_len == 6 ) { 758 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 759 mbox->m_out.lba = 760 ((u32)cmd->cmnd[1] << 16) | 761 ((u32)cmd->cmnd[2] << 8) | 762 (u32)cmd->cmnd[3]; 763 764 mbox->m_out.lba &= 0x1FFFFF; 765 766 #if MEGA_HAVE_STATS 767 /* 768 * Take modulo 0x80, since the logical drive 769 * number increases by 0x80 when a logical 770 * drive was deleted 771 */ 772 if (*cmd->cmnd == READ_6) { 773 adapter->nreads[ldrv_num%0x80]++; 774 adapter->nreadblocks[ldrv_num%0x80] += 775 mbox->m_out.numsectors; 776 } else { 777 adapter->nwrites[ldrv_num%0x80]++; 778 adapter->nwriteblocks[ldrv_num%0x80] += 779 mbox->m_out.numsectors; 780 } 781 #endif 782 } 783 784 /* 785 * 10-byte READ(0x28) or WRITE(0x2A) cdb 786 */ 787 if( cmd->cmd_len == 10 ) { 788 mbox->m_out.numsectors = 789 (u32)cmd->cmnd[8] | 790 ((u32)cmd->cmnd[7] << 8); 791 mbox->m_out.lba = 792 ((u32)cmd->cmnd[2] << 24) | 793 ((u32)cmd->cmnd[3] << 16) | 794 ((u32)cmd->cmnd[4] << 8) | 795 (u32)cmd->cmnd[5]; 796 797 #if MEGA_HAVE_STATS 798 if (*cmd->cmnd == READ_10) { 799 adapter->nreads[ldrv_num%0x80]++; 800 adapter->nreadblocks[ldrv_num%0x80] += 801 mbox->m_out.numsectors; 802 } else { 803 adapter->nwrites[ldrv_num%0x80]++; 804 adapter->nwriteblocks[ldrv_num%0x80] += 805 mbox->m_out.numsectors; 806 } 807 #endif 808 } 809 810 /* 811 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 812 */ 813 if( cmd->cmd_len == 12 ) { 814 mbox->m_out.lba = 815 ((u32)cmd->cmnd[2] << 24) | 816 ((u32)cmd->cmnd[3] << 16) | 817 ((u32)cmd->cmnd[4] << 8) | 818 (u32)cmd->cmnd[5]; 819 820 mbox->m_out.numsectors = 821 ((u32)cmd->cmnd[6] << 24) | 822 ((u32)cmd->cmnd[7] << 16) | 823 ((u32)cmd->cmnd[8] << 8) | 824 (u32)cmd->cmnd[9]; 825 826 #if MEGA_HAVE_STATS 827 if (*cmd->cmnd == READ_12) { 828 adapter->nreads[ldrv_num%0x80]++; 829 adapter->nreadblocks[ldrv_num%0x80] += 830 mbox->m_out.numsectors; 831 } else { 832 adapter->nwrites[ldrv_num%0x80]++; 833 adapter->nwriteblocks[ldrv_num%0x80] += 834 mbox->m_out.numsectors; 835 } 836 #endif 837 } 838 839 /* 840 * If it is a read command 841 */ 842 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 843 scb->dma_direction = PCI_DMA_FROMDEVICE; 844 } 845 else { 846 scb->dma_direction = PCI_DMA_TODEVICE; 847 } 848 849 /* Calculate Scatter-Gather info */ 850 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 851 (u32 *)&mbox->m_out.xferaddr, &seg); 852 853 return scb; 854 855 #if MEGA_HAVE_CLUSTERING 856 case RESERVE: /* Fall through */ 857 case RELEASE: 858 859 /* 860 * Do we support clustering and is the support enabled 861 */ 862 if( ! adapter->has_cluster ) { 863 864 cmd->result = (DID_BAD_TARGET << 16); 865 cmd->scsi_done(cmd); 866 return NULL; 867 } 868 869 /* Allocate a SCB and initialize mailbox */ 870 if(!(scb = mega_allocate_scb(adapter, cmd))) { 871 *busy = 1; 872 return NULL; 873 } 874 875 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 876 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? 877 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 878 879 scb->raw_mbox[3] = ldrv_num; 880 881 scb->dma_direction = PCI_DMA_NONE; 882 883 return scb; 884 #endif 885 886 default: 887 cmd->result = (DID_BAD_TARGET << 16); 888 cmd->scsi_done(cmd); 889 return NULL; 890 } 891 } 892 893 /* 894 * Passthru drive commands 895 */ 896 else { 897 /* Allocate a SCB and initialize passthru */ 898 if(!(scb = mega_allocate_scb(adapter, cmd))) { 899 *busy = 1; 900 return NULL; 901 } 902 903 mbox = (mbox_t *)scb->raw_mbox; 904 memset(mbox, 0, sizeof(scb->raw_mbox)); 905 906 if( adapter->support_ext_cdb ) { 907 908 epthru = mega_prepare_extpassthru(adapter, scb, cmd, 909 channel, target); 910 911 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 912 913 mbox->m_out.xferaddr = scb->epthru_dma_addr; 914 915 } 916 else { 917 918 pthru = mega_prepare_passthru(adapter, scb, cmd, 919 channel, target); 920 921 /* Initialize mailbox */ 922 if( adapter->has_64bit_addr ) { 923 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 924 } 925 else { 926 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 927 } 928 929 mbox->m_out.xferaddr = scb->pthru_dma_addr; 930 931 } 932 return scb; 933 } 934 return NULL; 935 } 936 937 938 /** 939 * mega_prepare_passthru() 940 * @adapter - pointer to our soft state 941 * @scb - our scsi control block 942 * @cmd - scsi command from the mid-layer 943 * @channel - actual channel on the controller 944 * @target - actual id on the controller. 945 * 946 * prepare a command for the scsi physical devices. 947 */ 948 static mega_passthru * 949 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd, 950 int channel, int target) 951 { 952 mega_passthru *pthru; 953 954 pthru = scb->pthru; 955 memset(pthru, 0, sizeof (mega_passthru)); 956 957 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 958 pthru->timeout = 2; 959 960 pthru->ars = 1; 961 pthru->reqsenselen = 14; 962 pthru->islogical = 0; 963 964 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 965 966 pthru->target = (adapter->flag & BOARD_40LD) ? 967 (channel << 4) | target : target; 968 969 pthru->cdblen = cmd->cmd_len; 970 pthru->logdrv = cmd->device->lun; 971 972 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 973 974 /* Not sure about the direction */ 975 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 976 977 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 978 switch (cmd->cmnd[0]) { 979 case INQUIRY: 980 case READ_CAPACITY: 981 if(!(adapter->flag & (1L << cmd->device->channel))) { 982 983 dev_notice(&adapter->dev->dev, 984 "scsi%d: scanning scsi channel %d [P%d] " 985 "for physical devices\n", 986 adapter->host->host_no, 987 cmd->device->channel, channel); 988 989 adapter->flag |= (1L << cmd->device->channel); 990 } 991 /* Fall through */ 992 default: 993 pthru->numsgelements = mega_build_sglist(adapter, scb, 994 &pthru->dataxferaddr, &pthru->dataxferlen); 995 break; 996 } 997 return pthru; 998 } 999 1000 1001 /** 1002 * mega_prepare_extpassthru() 1003 * @adapter - pointer to our soft state 1004 * @scb - our scsi control block 1005 * @cmd - scsi command from the mid-layer 1006 * @channel - actual channel on the controller 1007 * @target - actual id on the controller. 1008 * 1009 * prepare a command for the scsi physical devices. This rountine prepares 1010 * commands for devices which can take extended CDBs (>10 bytes) 1011 */ 1012 static mega_ext_passthru * 1013 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, 1014 struct scsi_cmnd *cmd, 1015 int channel, int target) 1016 { 1017 mega_ext_passthru *epthru; 1018 1019 epthru = scb->epthru; 1020 memset(epthru, 0, sizeof(mega_ext_passthru)); 1021 1022 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1023 epthru->timeout = 2; 1024 1025 epthru->ars = 1; 1026 epthru->reqsenselen = 14; 1027 epthru->islogical = 0; 1028 1029 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1030 epthru->target = (adapter->flag & BOARD_40LD) ? 1031 (channel << 4) | target : target; 1032 1033 epthru->cdblen = cmd->cmd_len; 1034 epthru->logdrv = cmd->device->lun; 1035 1036 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1037 1038 /* Not sure about the direction */ 1039 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 1040 1041 switch(cmd->cmnd[0]) { 1042 case INQUIRY: 1043 case READ_CAPACITY: 1044 if(!(adapter->flag & (1L << cmd->device->channel))) { 1045 1046 dev_notice(&adapter->dev->dev, 1047 "scsi%d: scanning scsi channel %d [P%d] " 1048 "for physical devices\n", 1049 adapter->host->host_no, 1050 cmd->device->channel, channel); 1051 1052 adapter->flag |= (1L << cmd->device->channel); 1053 } 1054 /* Fall through */ 1055 default: 1056 epthru->numsgelements = mega_build_sglist(adapter, scb, 1057 &epthru->dataxferaddr, &epthru->dataxferlen); 1058 break; 1059 } 1060 1061 return epthru; 1062 } 1063 1064 static void 1065 __mega_runpendq(adapter_t *adapter) 1066 { 1067 scb_t *scb; 1068 struct list_head *pos, *next; 1069 1070 /* Issue any pending commands to the card */ 1071 list_for_each_safe(pos, next, &adapter->pending_list) { 1072 1073 scb = list_entry(pos, scb_t, list); 1074 1075 if( !(scb->state & SCB_ISSUED) ) { 1076 1077 if( issue_scb(adapter, scb) != 0 ) 1078 return; 1079 } 1080 } 1081 1082 return; 1083 } 1084 1085 1086 /** 1087 * issue_scb() 1088 * @adapter - pointer to our soft state 1089 * @scb - scsi control block 1090 * 1091 * Post a command to the card if the mailbox is available, otherwise return 1092 * busy. We also take the scb from the pending list if the mailbox is 1093 * available. 1094 */ 1095 static int 1096 issue_scb(adapter_t *adapter, scb_t *scb) 1097 { 1098 volatile mbox64_t *mbox64 = adapter->mbox64; 1099 volatile mbox_t *mbox = adapter->mbox; 1100 unsigned int i = 0; 1101 1102 if(unlikely(mbox->m_in.busy)) { 1103 do { 1104 udelay(1); 1105 i++; 1106 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1107 1108 if(mbox->m_in.busy) return -1; 1109 } 1110 1111 /* Copy mailbox data into host structure */ 1112 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1113 sizeof(struct mbox_out)); 1114 1115 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1116 mbox->m_in.busy = 1; /* Set busy */ 1117 1118 1119 /* 1120 * Increment the pending queue counter 1121 */ 1122 atomic_inc(&adapter->pend_cmds); 1123 1124 switch (mbox->m_out.cmd) { 1125 case MEGA_MBOXCMD_LREAD64: 1126 case MEGA_MBOXCMD_LWRITE64: 1127 case MEGA_MBOXCMD_PASSTHRU64: 1128 case MEGA_MBOXCMD_EXTPTHRU: 1129 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1130 mbox64->xfer_segment_hi = 0; 1131 mbox->m_out.xferaddr = 0xFFFFFFFF; 1132 break; 1133 default: 1134 mbox64->xfer_segment_lo = 0; 1135 mbox64->xfer_segment_hi = 0; 1136 } 1137 1138 /* 1139 * post the command 1140 */ 1141 scb->state |= SCB_ISSUED; 1142 1143 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1144 mbox->m_in.poll = 0; 1145 mbox->m_in.ack = 0; 1146 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1147 } 1148 else { 1149 irq_enable(adapter); 1150 issue_command(adapter); 1151 } 1152 1153 return 0; 1154 } 1155 1156 /* 1157 * Wait until the controller's mailbox is available 1158 */ 1159 static inline int 1160 mega_busywait_mbox (adapter_t *adapter) 1161 { 1162 if (adapter->mbox->m_in.busy) 1163 return __mega_busywait_mbox(adapter); 1164 return 0; 1165 } 1166 1167 /** 1168 * issue_scb_block() 1169 * @adapter - pointer to our soft state 1170 * @raw_mbox - the mailbox 1171 * 1172 * Issue a scb in synchronous and non-interrupt mode 1173 */ 1174 static int 1175 issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1176 { 1177 volatile mbox64_t *mbox64 = adapter->mbox64; 1178 volatile mbox_t *mbox = adapter->mbox; 1179 u8 byte; 1180 1181 /* Wait until mailbox is free */ 1182 if(mega_busywait_mbox (adapter)) 1183 goto bug_blocked_mailbox; 1184 1185 /* Copy mailbox data into host structure */ 1186 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1187 mbox->m_out.cmdid = 0xFE; 1188 mbox->m_in.busy = 1; 1189 1190 switch (raw_mbox[0]) { 1191 case MEGA_MBOXCMD_LREAD64: 1192 case MEGA_MBOXCMD_LWRITE64: 1193 case MEGA_MBOXCMD_PASSTHRU64: 1194 case MEGA_MBOXCMD_EXTPTHRU: 1195 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1196 mbox64->xfer_segment_hi = 0; 1197 mbox->m_out.xferaddr = 0xFFFFFFFF; 1198 break; 1199 default: 1200 mbox64->xfer_segment_lo = 0; 1201 mbox64->xfer_segment_hi = 0; 1202 } 1203 1204 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1205 mbox->m_in.poll = 0; 1206 mbox->m_in.ack = 0; 1207 mbox->m_in.numstatus = 0xFF; 1208 mbox->m_in.status = 0xFF; 1209 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1210 1211 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1212 cpu_relax(); 1213 1214 mbox->m_in.numstatus = 0xFF; 1215 1216 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1217 cpu_relax(); 1218 1219 mbox->m_in.poll = 0; 1220 mbox->m_in.ack = 0x77; 1221 1222 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1223 1224 while(RDINDOOR(adapter) & 0x2) 1225 cpu_relax(); 1226 } 1227 else { 1228 irq_disable(adapter); 1229 issue_command(adapter); 1230 1231 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1232 cpu_relax(); 1233 1234 set_irq_state(adapter, byte); 1235 irq_enable(adapter); 1236 irq_ack(adapter); 1237 } 1238 1239 return mbox->m_in.status; 1240 1241 bug_blocked_mailbox: 1242 dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n"); 1243 udelay (1000); 1244 return -1; 1245 } 1246 1247 1248 /** 1249 * megaraid_isr_iomapped() 1250 * @irq - irq 1251 * @devp - pointer to our soft state 1252 * 1253 * Interrupt service routine for io-mapped controllers. 1254 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1255 * and service the completed commands. 1256 */ 1257 static irqreturn_t 1258 megaraid_isr_iomapped(int irq, void *devp) 1259 { 1260 adapter_t *adapter = devp; 1261 unsigned long flags; 1262 u8 status; 1263 u8 nstatus; 1264 u8 completed[MAX_FIRMWARE_STATUS]; 1265 u8 byte; 1266 int handled = 0; 1267 1268 1269 /* 1270 * loop till F/W has more commands for us to complete. 1271 */ 1272 spin_lock_irqsave(&adapter->lock, flags); 1273 1274 do { 1275 /* Check if a valid interrupt is pending */ 1276 byte = irq_state(adapter); 1277 if( (byte & VALID_INTR_BYTE) == 0 ) { 1278 /* 1279 * No more pending commands 1280 */ 1281 goto out_unlock; 1282 } 1283 set_irq_state(adapter, byte); 1284 1285 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1286 == 0xFF) 1287 cpu_relax(); 1288 adapter->mbox->m_in.numstatus = 0xFF; 1289 1290 status = adapter->mbox->m_in.status; 1291 1292 /* 1293 * decrement the pending queue counter 1294 */ 1295 atomic_sub(nstatus, &adapter->pend_cmds); 1296 1297 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1298 nstatus); 1299 1300 /* Acknowledge interrupt */ 1301 irq_ack(adapter); 1302 1303 mega_cmd_done(adapter, completed, nstatus, status); 1304 1305 mega_rundoneq(adapter); 1306 1307 handled = 1; 1308 1309 /* Loop through any pending requests */ 1310 if(atomic_read(&adapter->quiescent) == 0) { 1311 mega_runpendq(adapter); 1312 } 1313 1314 } while(1); 1315 1316 out_unlock: 1317 1318 spin_unlock_irqrestore(&adapter->lock, flags); 1319 1320 return IRQ_RETVAL(handled); 1321 } 1322 1323 1324 /** 1325 * megaraid_isr_memmapped() 1326 * @irq - irq 1327 * @devp - pointer to our soft state 1328 * 1329 * Interrupt service routine for memory-mapped controllers. 1330 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1331 * and service the completed commands. 1332 */ 1333 static irqreturn_t 1334 megaraid_isr_memmapped(int irq, void *devp) 1335 { 1336 adapter_t *adapter = devp; 1337 unsigned long flags; 1338 u8 status; 1339 u32 dword = 0; 1340 u8 nstatus; 1341 u8 completed[MAX_FIRMWARE_STATUS]; 1342 int handled = 0; 1343 1344 1345 /* 1346 * loop till F/W has more commands for us to complete. 1347 */ 1348 spin_lock_irqsave(&adapter->lock, flags); 1349 1350 do { 1351 /* Check if a valid interrupt is pending */ 1352 dword = RDOUTDOOR(adapter); 1353 if(dword != 0x10001234) { 1354 /* 1355 * No more pending commands 1356 */ 1357 goto out_unlock; 1358 } 1359 WROUTDOOR(adapter, 0x10001234); 1360 1361 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1362 == 0xFF) { 1363 cpu_relax(); 1364 } 1365 adapter->mbox->m_in.numstatus = 0xFF; 1366 1367 status = adapter->mbox->m_in.status; 1368 1369 /* 1370 * decrement the pending queue counter 1371 */ 1372 atomic_sub(nstatus, &adapter->pend_cmds); 1373 1374 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1375 nstatus); 1376 1377 /* Acknowledge interrupt */ 1378 WRINDOOR(adapter, 0x2); 1379 1380 handled = 1; 1381 1382 while( RDINDOOR(adapter) & 0x02 ) 1383 cpu_relax(); 1384 1385 mega_cmd_done(adapter, completed, nstatus, status); 1386 1387 mega_rundoneq(adapter); 1388 1389 /* Loop through any pending requests */ 1390 if(atomic_read(&adapter->quiescent) == 0) { 1391 mega_runpendq(adapter); 1392 } 1393 1394 } while(1); 1395 1396 out_unlock: 1397 1398 spin_unlock_irqrestore(&adapter->lock, flags); 1399 1400 return IRQ_RETVAL(handled); 1401 } 1402 /** 1403 * mega_cmd_done() 1404 * @adapter - pointer to our soft state 1405 * @completed - array of ids of completed commands 1406 * @nstatus - number of completed commands 1407 * @status - status of the last command completed 1408 * 1409 * Complete the commands and call the scsi mid-layer callback hooks. 1410 */ 1411 static void 1412 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1413 { 1414 mega_ext_passthru *epthru = NULL; 1415 struct scatterlist *sgl; 1416 struct scsi_cmnd *cmd = NULL; 1417 mega_passthru *pthru = NULL; 1418 mbox_t *mbox = NULL; 1419 u8 c; 1420 scb_t *scb; 1421 int islogical; 1422 int cmdid; 1423 int i; 1424 1425 /* 1426 * for all the commands completed, call the mid-layer callback routine 1427 * and free the scb. 1428 */ 1429 for( i = 0; i < nstatus; i++ ) { 1430 1431 cmdid = completed[i]; 1432 1433 /* 1434 * Only free SCBs for the commands coming down from the 1435 * mid-layer, not for which were issued internally 1436 * 1437 * For internal command, restore the status returned by the 1438 * firmware so that user can interpret it. 1439 */ 1440 if (cmdid == CMDID_INT_CMDS) { 1441 scb = &adapter->int_scb; 1442 1443 list_del_init(&scb->list); 1444 scb->state = SCB_FREE; 1445 1446 adapter->int_status = status; 1447 complete(&adapter->int_waitq); 1448 } else { 1449 scb = &adapter->scb_list[cmdid]; 1450 1451 /* 1452 * Make sure f/w has completed a valid command 1453 */ 1454 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1455 dev_crit(&adapter->dev->dev, "invalid command " 1456 "Id %d, scb->state:%x, scsi cmd:%p\n", 1457 cmdid, scb->state, scb->cmd); 1458 1459 continue; 1460 } 1461 1462 /* 1463 * Was a abort issued for this command 1464 */ 1465 if( scb->state & SCB_ABORT ) { 1466 1467 dev_warn(&adapter->dev->dev, 1468 "aborted cmd [%x] complete\n", 1469 scb->idx); 1470 1471 scb->cmd->result = (DID_ABORT << 16); 1472 1473 list_add_tail(SCSI_LIST(scb->cmd), 1474 &adapter->completed_list); 1475 1476 mega_free_scb(adapter, scb); 1477 1478 continue; 1479 } 1480 1481 /* 1482 * Was a reset issued for this command 1483 */ 1484 if( scb->state & SCB_RESET ) { 1485 1486 dev_warn(&adapter->dev->dev, 1487 "reset cmd [%x] complete\n", 1488 scb->idx); 1489 1490 scb->cmd->result = (DID_RESET << 16); 1491 1492 list_add_tail(SCSI_LIST(scb->cmd), 1493 &adapter->completed_list); 1494 1495 mega_free_scb (adapter, scb); 1496 1497 continue; 1498 } 1499 1500 cmd = scb->cmd; 1501 pthru = scb->pthru; 1502 epthru = scb->epthru; 1503 mbox = (mbox_t *)scb->raw_mbox; 1504 1505 #if MEGA_HAVE_STATS 1506 { 1507 1508 int logdrv = mbox->m_out.logdrv; 1509 1510 islogical = adapter->logdrv_chan[cmd->channel]; 1511 /* 1512 * Maintain an error counter for the logical drive. 1513 * Some application like SNMP agent need such 1514 * statistics 1515 */ 1516 if( status && islogical && (cmd->cmnd[0] == READ_6 || 1517 cmd->cmnd[0] == READ_10 || 1518 cmd->cmnd[0] == READ_12)) { 1519 /* 1520 * Logical drive number increases by 0x80 when 1521 * a logical drive is deleted 1522 */ 1523 adapter->rd_errors[logdrv%0x80]++; 1524 } 1525 1526 if( status && islogical && (cmd->cmnd[0] == WRITE_6 || 1527 cmd->cmnd[0] == WRITE_10 || 1528 cmd->cmnd[0] == WRITE_12)) { 1529 /* 1530 * Logical drive number increases by 0x80 when 1531 * a logical drive is deleted 1532 */ 1533 adapter->wr_errors[logdrv%0x80]++; 1534 } 1535 1536 } 1537 #endif 1538 } 1539 1540 /* 1541 * Do not return the presence of hard disk on the channel so, 1542 * inquiry sent, and returned data==hard disk or removable 1543 * hard disk and not logical, request should return failure! - 1544 * PJ 1545 */ 1546 islogical = adapter->logdrv_chan[cmd->device->channel]; 1547 if( cmd->cmnd[0] == INQUIRY && !islogical ) { 1548 1549 sgl = scsi_sglist(cmd); 1550 if( sg_page(sgl) ) { 1551 c = *(unsigned char *) sg_virt(&sgl[0]); 1552 } else { 1553 dev_warn(&adapter->dev->dev, "invalid sg\n"); 1554 c = 0; 1555 } 1556 1557 if(IS_RAID_CH(adapter, cmd->device->channel) && 1558 ((c & 0x1F ) == TYPE_DISK)) { 1559 status = 0xF0; 1560 } 1561 } 1562 1563 /* clear result; otherwise, success returns corrupt value */ 1564 cmd->result = 0; 1565 1566 /* Convert MegaRAID status to Linux error code */ 1567 switch (status) { 1568 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1569 cmd->result |= (DID_OK << 16); 1570 break; 1571 1572 case 0x02: /* ERROR_ABORTED, i.e. 1573 SCSI_STATUS_CHECK_CONDITION */ 1574 1575 /* set sense_buffer and result fields */ 1576 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1577 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1578 1579 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1580 14); 1581 1582 cmd->result = (DRIVER_SENSE << 24) | 1583 (DID_OK << 16) | 1584 (CHECK_CONDITION << 1); 1585 } 1586 else { 1587 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1588 1589 memcpy(cmd->sense_buffer, 1590 epthru->reqsensearea, 14); 1591 1592 cmd->result = (DRIVER_SENSE << 24) | 1593 (DID_OK << 16) | 1594 (CHECK_CONDITION << 1); 1595 } else { 1596 cmd->sense_buffer[0] = 0x70; 1597 cmd->sense_buffer[2] = ABORTED_COMMAND; 1598 cmd->result |= (CHECK_CONDITION << 1); 1599 } 1600 } 1601 break; 1602 1603 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1604 SCSI_STATUS_BUSY */ 1605 cmd->result |= (DID_BUS_BUSY << 16) | status; 1606 break; 1607 1608 default: 1609 #if MEGA_HAVE_CLUSTERING 1610 /* 1611 * If TEST_UNIT_READY fails, we know 1612 * MEGA_RESERVATION_STATUS failed 1613 */ 1614 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1615 cmd->result |= (DID_ERROR << 16) | 1616 (RESERVATION_CONFLICT << 1); 1617 } 1618 else 1619 /* 1620 * Error code returned is 1 if Reserve or Release 1621 * failed or the input parameter is invalid 1622 */ 1623 if( status == 1 && 1624 (cmd->cmnd[0] == RESERVE || 1625 cmd->cmnd[0] == RELEASE) ) { 1626 1627 cmd->result |= (DID_ERROR << 16) | 1628 (RESERVATION_CONFLICT << 1); 1629 } 1630 else 1631 #endif 1632 cmd->result |= (DID_BAD_TARGET << 16)|status; 1633 } 1634 1635 mega_free_scb(adapter, scb); 1636 1637 /* Add Scsi_Command to end of completed queue */ 1638 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1639 } 1640 } 1641 1642 1643 /* 1644 * mega_runpendq() 1645 * 1646 * Run through the list of completed requests and finish it 1647 */ 1648 static void 1649 mega_rundoneq (adapter_t *adapter) 1650 { 1651 struct scsi_cmnd *cmd; 1652 struct list_head *pos; 1653 1654 list_for_each(pos, &adapter->completed_list) { 1655 1656 struct scsi_pointer* spos = (struct scsi_pointer *)pos; 1657 1658 cmd = list_entry(spos, struct scsi_cmnd, SCp); 1659 cmd->scsi_done(cmd); 1660 } 1661 1662 INIT_LIST_HEAD(&adapter->completed_list); 1663 } 1664 1665 1666 /* 1667 * Free a SCB structure 1668 * Note: We assume the scsi commands associated with this scb is not free yet. 1669 */ 1670 static void 1671 mega_free_scb(adapter_t *adapter, scb_t *scb) 1672 { 1673 switch( scb->dma_type ) { 1674 1675 case MEGA_DMA_TYPE_NONE: 1676 break; 1677 1678 case MEGA_SGLIST: 1679 scsi_dma_unmap(scb->cmd); 1680 break; 1681 default: 1682 break; 1683 } 1684 1685 /* 1686 * Remove from the pending list 1687 */ 1688 list_del_init(&scb->list); 1689 1690 /* Link the scb back into free list */ 1691 scb->state = SCB_FREE; 1692 scb->cmd = NULL; 1693 1694 list_add(&scb->list, &adapter->free_list); 1695 } 1696 1697 1698 static int 1699 __mega_busywait_mbox (adapter_t *adapter) 1700 { 1701 volatile mbox_t *mbox = adapter->mbox; 1702 long counter; 1703 1704 for (counter = 0; counter < 10000; counter++) { 1705 if (!mbox->m_in.busy) 1706 return 0; 1707 udelay(100); 1708 cond_resched(); 1709 } 1710 return -1; /* give up after 1 second */ 1711 } 1712 1713 /* 1714 * Copies data to SGLIST 1715 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1716 */ 1717 static int 1718 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1719 { 1720 struct scatterlist *sg; 1721 struct scsi_cmnd *cmd; 1722 int sgcnt; 1723 int idx; 1724 1725 cmd = scb->cmd; 1726 1727 /* 1728 * Copy Scatter-Gather list info into controller structure. 1729 * 1730 * The number of sg elements returned must not exceed our limit 1731 */ 1732 sgcnt = scsi_dma_map(cmd); 1733 1734 scb->dma_type = MEGA_SGLIST; 1735 1736 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0); 1737 1738 *len = 0; 1739 1740 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { 1741 sg = scsi_sglist(cmd); 1742 scb->dma_h_bulkdata = sg_dma_address(sg); 1743 *buf = (u32)scb->dma_h_bulkdata; 1744 *len = sg_dma_len(sg); 1745 return 0; 1746 } 1747 1748 scsi_for_each_sg(cmd, sg, sgcnt, idx) { 1749 if (adapter->has_64bit_addr) { 1750 scb->sgl64[idx].address = sg_dma_address(sg); 1751 *len += scb->sgl64[idx].length = sg_dma_len(sg); 1752 } else { 1753 scb->sgl[idx].address = sg_dma_address(sg); 1754 *len += scb->sgl[idx].length = sg_dma_len(sg); 1755 } 1756 } 1757 1758 /* Reset pointer and length fields */ 1759 *buf = scb->sgl_dma_addr; 1760 1761 /* Return count of SG requests */ 1762 return sgcnt; 1763 } 1764 1765 1766 /* 1767 * mega_8_to_40ld() 1768 * 1769 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1770 * Enquiry3 structures for later use 1771 */ 1772 static void 1773 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1774 mega_product_info *product_info) 1775 { 1776 int i; 1777 1778 product_info->max_commands = inquiry->adapter_info.max_commands; 1779 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1780 product_info->nchannels = inquiry->adapter_info.nchannels; 1781 1782 for (i = 0; i < 4; i++) { 1783 product_info->fw_version[i] = 1784 inquiry->adapter_info.fw_version[i]; 1785 1786 product_info->bios_version[i] = 1787 inquiry->adapter_info.bios_version[i]; 1788 } 1789 enquiry3->cache_flush_interval = 1790 inquiry->adapter_info.cache_flush_interval; 1791 1792 product_info->dram_size = inquiry->adapter_info.dram_size; 1793 1794 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1795 1796 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1797 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1798 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1799 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1800 } 1801 1802 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1803 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1804 } 1805 1806 static inline void 1807 mega_free_sgl(adapter_t *adapter) 1808 { 1809 scb_t *scb; 1810 int i; 1811 1812 for(i = 0; i < adapter->max_cmds; i++) { 1813 1814 scb = &adapter->scb_list[i]; 1815 1816 if( scb->sgl64 ) { 1817 pci_free_consistent(adapter->dev, 1818 sizeof(mega_sgl64) * adapter->sglen, 1819 scb->sgl64, 1820 scb->sgl_dma_addr); 1821 1822 scb->sgl64 = NULL; 1823 } 1824 1825 if( scb->pthru ) { 1826 pci_free_consistent(adapter->dev, sizeof(mega_passthru), 1827 scb->pthru, scb->pthru_dma_addr); 1828 1829 scb->pthru = NULL; 1830 } 1831 1832 if( scb->epthru ) { 1833 pci_free_consistent(adapter->dev, 1834 sizeof(mega_ext_passthru), 1835 scb->epthru, scb->epthru_dma_addr); 1836 1837 scb->epthru = NULL; 1838 } 1839 1840 } 1841 } 1842 1843 1844 /* 1845 * Get information about the card/driver 1846 */ 1847 const char * 1848 megaraid_info(struct Scsi_Host *host) 1849 { 1850 static char buffer[512]; 1851 adapter_t *adapter; 1852 1853 adapter = (adapter_t *)host->hostdata; 1854 1855 sprintf (buffer, 1856 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1857 adapter->fw_version, adapter->product_info.max_commands, 1858 adapter->host->max_id, adapter->host->max_channel, 1859 (u32)adapter->host->max_lun); 1860 return buffer; 1861 } 1862 1863 /* 1864 * Abort a previous SCSI request. Only commands on the pending list can be 1865 * aborted. All the commands issued to the F/W must complete. 1866 */ 1867 static int 1868 megaraid_abort(struct scsi_cmnd *cmd) 1869 { 1870 adapter_t *adapter; 1871 int rval; 1872 1873 adapter = (adapter_t *)cmd->device->host->hostdata; 1874 1875 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1876 1877 /* 1878 * This is required here to complete any completed requests 1879 * to be communicated over to the mid layer. 1880 */ 1881 mega_rundoneq(adapter); 1882 1883 return rval; 1884 } 1885 1886 1887 static int 1888 megaraid_reset(struct scsi_cmnd *cmd) 1889 { 1890 adapter_t *adapter; 1891 megacmd_t mc; 1892 int rval; 1893 1894 adapter = (adapter_t *)cmd->device->host->hostdata; 1895 1896 #if MEGA_HAVE_CLUSTERING 1897 mc.cmd = MEGA_CLUSTER_CMD; 1898 mc.opcode = MEGA_RESET_RESERVATIONS; 1899 1900 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1901 dev_warn(&adapter->dev->dev, "reservation reset failed\n"); 1902 } 1903 else { 1904 dev_info(&adapter->dev->dev, "reservation reset\n"); 1905 } 1906 #endif 1907 1908 spin_lock_irq(&adapter->lock); 1909 1910 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 1911 1912 /* 1913 * This is required here to complete any completed requests 1914 * to be communicated over to the mid layer. 1915 */ 1916 mega_rundoneq(adapter); 1917 spin_unlock_irq(&adapter->lock); 1918 1919 return rval; 1920 } 1921 1922 /** 1923 * megaraid_abort_and_reset() 1924 * @adapter - megaraid soft state 1925 * @cmd - scsi command to be aborted or reset 1926 * @aor - abort or reset flag 1927 * 1928 * Try to locate the scsi command in the pending queue. If found and is not 1929 * issued to the controller, abort/reset it. Otherwise return failure 1930 */ 1931 static int 1932 megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor) 1933 { 1934 struct list_head *pos, *next; 1935 scb_t *scb; 1936 1937 dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n", 1938 (aor == SCB_ABORT)? "ABORTING":"RESET", 1939 cmd->cmnd[0], cmd->device->channel, 1940 cmd->device->id, (u32)cmd->device->lun); 1941 1942 if(list_empty(&adapter->pending_list)) 1943 return FAILED; 1944 1945 list_for_each_safe(pos, next, &adapter->pending_list) { 1946 1947 scb = list_entry(pos, scb_t, list); 1948 1949 if (scb->cmd == cmd) { /* Found command */ 1950 1951 scb->state |= aor; 1952 1953 /* 1954 * Check if this command has firmware ownership. If 1955 * yes, we cannot reset this command. Whenever f/w 1956 * completes this command, we will return appropriate 1957 * status from ISR. 1958 */ 1959 if( scb->state & SCB_ISSUED ) { 1960 1961 dev_warn(&adapter->dev->dev, 1962 "%s[%x], fw owner\n", 1963 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1964 scb->idx); 1965 1966 return FAILED; 1967 } 1968 else { 1969 1970 /* 1971 * Not yet issued! Remove from the pending 1972 * list 1973 */ 1974 dev_warn(&adapter->dev->dev, 1975 "%s-[%x], driver owner\n", 1976 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1977 scb->idx); 1978 1979 mega_free_scb(adapter, scb); 1980 1981 if( aor == SCB_ABORT ) { 1982 cmd->result = (DID_ABORT << 16); 1983 } 1984 else { 1985 cmd->result = (DID_RESET << 16); 1986 } 1987 1988 list_add_tail(SCSI_LIST(cmd), 1989 &adapter->completed_list); 1990 1991 return SUCCESS; 1992 } 1993 } 1994 } 1995 1996 return FAILED; 1997 } 1998 1999 static inline int 2000 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2001 { 2002 *pdev = pci_alloc_dev(NULL); 2003 2004 if( *pdev == NULL ) return -1; 2005 2006 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2007 2008 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) { 2009 kfree(*pdev); 2010 return -1; 2011 } 2012 2013 return 0; 2014 } 2015 2016 static inline void 2017 free_local_pdev(struct pci_dev *pdev) 2018 { 2019 kfree(pdev); 2020 } 2021 2022 /** 2023 * mega_allocate_inquiry() 2024 * @dma_handle - handle returned for dma address 2025 * @pdev - handle to pci device 2026 * 2027 * allocates memory for inquiry structure 2028 */ 2029 static inline void * 2030 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2031 { 2032 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2033 } 2034 2035 2036 static inline void 2037 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2038 { 2039 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2040 } 2041 2042 2043 #ifdef CONFIG_PROC_FS 2044 /* Following code handles /proc fs */ 2045 2046 /** 2047 * proc_show_config() 2048 * @m - Synthetic file construction data 2049 * @v - File iterator 2050 * 2051 * Display configuration information about the controller. 2052 */ 2053 static int 2054 proc_show_config(struct seq_file *m, void *v) 2055 { 2056 2057 adapter_t *adapter = m->private; 2058 2059 seq_puts(m, MEGARAID_VERSION); 2060 if(adapter->product_info.product_name[0]) 2061 seq_printf(m, "%s\n", adapter->product_info.product_name); 2062 2063 seq_puts(m, "Controller Type: "); 2064 2065 if( adapter->flag & BOARD_MEMMAP ) 2066 seq_puts(m, "438/466/467/471/493/518/520/531/532\n"); 2067 else 2068 seq_puts(m, "418/428/434\n"); 2069 2070 if(adapter->flag & BOARD_40LD) 2071 seq_puts(m, "Controller Supports 40 Logical Drives\n"); 2072 2073 if(adapter->flag & BOARD_64BIT) 2074 seq_puts(m, "Controller capable of 64-bit memory addressing\n"); 2075 if( adapter->has_64bit_addr ) 2076 seq_puts(m, "Controller using 64-bit memory addressing\n"); 2077 else 2078 seq_puts(m, "Controller is not using 64-bit memory addressing\n"); 2079 2080 seq_printf(m, "Base = %08lx, Irq = %d, ", 2081 adapter->base, adapter->host->irq); 2082 2083 seq_printf(m, "Logical Drives = %d, Channels = %d\n", 2084 adapter->numldrv, adapter->product_info.nchannels); 2085 2086 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n", 2087 adapter->fw_version, adapter->bios_version, 2088 adapter->product_info.dram_size); 2089 2090 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2091 adapter->product_info.max_commands, adapter->max_cmds); 2092 2093 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb); 2094 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del); 2095 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); 2096 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv); 2097 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); 2098 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); 2099 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); 2100 seq_printf(m, "quiescent = %d\n", 2101 atomic_read(&adapter->quiescent)); 2102 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster); 2103 2104 seq_puts(m, "\nModule Parameters:\n"); 2105 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun); 2106 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io); 2107 return 0; 2108 } 2109 2110 /** 2111 * proc_show_stat() 2112 * @m - Synthetic file construction data 2113 * @v - File iterator 2114 * 2115 * Display statistical information about the I/O activity. 2116 */ 2117 static int 2118 proc_show_stat(struct seq_file *m, void *v) 2119 { 2120 adapter_t *adapter = m->private; 2121 #if MEGA_HAVE_STATS 2122 int i; 2123 #endif 2124 2125 seq_puts(m, "Statistical Information for this controller\n"); 2126 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); 2127 #if MEGA_HAVE_STATS 2128 for(i = 0; i < adapter->numldrv; i++) { 2129 seq_printf(m, "Logical Drive %d:\n", i); 2130 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n", 2131 adapter->nreads[i], adapter->nwrites[i]); 2132 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n", 2133 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2134 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n", 2135 adapter->rd_errors[i], adapter->wr_errors[i]); 2136 } 2137 #else 2138 seq_puts(m, "IO and error counters not compiled in driver.\n"); 2139 #endif 2140 return 0; 2141 } 2142 2143 2144 /** 2145 * proc_show_mbox() 2146 * @m - Synthetic file construction data 2147 * @v - File iterator 2148 * 2149 * Display mailbox information for the last command issued. This information 2150 * is good for debugging. 2151 */ 2152 static int 2153 proc_show_mbox(struct seq_file *m, void *v) 2154 { 2155 adapter_t *adapter = m->private; 2156 volatile mbox_t *mbox = adapter->mbox; 2157 2158 seq_puts(m, "Contents of Mail Box Structure\n"); 2159 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd); 2160 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid); 2161 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors); 2162 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba); 2163 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr); 2164 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv); 2165 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements); 2166 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy); 2167 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status); 2168 return 0; 2169 } 2170 2171 2172 /** 2173 * proc_show_rebuild_rate() 2174 * @m - Synthetic file construction data 2175 * @v - File iterator 2176 * 2177 * Display current rebuild rate 2178 */ 2179 static int 2180 proc_show_rebuild_rate(struct seq_file *m, void *v) 2181 { 2182 adapter_t *adapter = m->private; 2183 dma_addr_t dma_handle; 2184 caddr_t inquiry; 2185 struct pci_dev *pdev; 2186 2187 if( make_local_pdev(adapter, &pdev) != 0 ) 2188 return 0; 2189 2190 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2191 goto free_pdev; 2192 2193 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2194 seq_puts(m, "Adapter inquiry failed.\n"); 2195 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2196 goto free_inquiry; 2197 } 2198 2199 if( adapter->flag & BOARD_40LD ) 2200 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2201 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2202 else 2203 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2204 ((mraid_ext_inquiry *) 2205 inquiry)->raid_inq.adapter_info.rebuild_rate); 2206 2207 free_inquiry: 2208 mega_free_inquiry(inquiry, dma_handle, pdev); 2209 free_pdev: 2210 free_local_pdev(pdev); 2211 return 0; 2212 } 2213 2214 2215 /** 2216 * proc_show_battery() 2217 * @m - Synthetic file construction data 2218 * @v - File iterator 2219 * 2220 * Display information about the battery module on the controller. 2221 */ 2222 static int 2223 proc_show_battery(struct seq_file *m, void *v) 2224 { 2225 adapter_t *adapter = m->private; 2226 dma_addr_t dma_handle; 2227 caddr_t inquiry; 2228 struct pci_dev *pdev; 2229 u8 battery_status; 2230 2231 if( make_local_pdev(adapter, &pdev) != 0 ) 2232 return 0; 2233 2234 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2235 goto free_pdev; 2236 2237 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2238 seq_puts(m, "Adapter inquiry failed.\n"); 2239 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2240 goto free_inquiry; 2241 } 2242 2243 if( adapter->flag & BOARD_40LD ) { 2244 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2245 } 2246 else { 2247 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2248 raid_inq.adapter_info.battery_status; 2249 } 2250 2251 /* 2252 * Decode the battery status 2253 */ 2254 seq_printf(m, "Battery Status:[%d]", battery_status); 2255 2256 if(battery_status == MEGA_BATT_CHARGE_DONE) 2257 seq_puts(m, " Charge Done"); 2258 2259 if(battery_status & MEGA_BATT_MODULE_MISSING) 2260 seq_puts(m, " Module Missing"); 2261 2262 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2263 seq_puts(m, " Low Voltage"); 2264 2265 if(battery_status & MEGA_BATT_TEMP_HIGH) 2266 seq_puts(m, " Temperature High"); 2267 2268 if(battery_status & MEGA_BATT_PACK_MISSING) 2269 seq_puts(m, " Pack Missing"); 2270 2271 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2272 seq_puts(m, " Charge In-progress"); 2273 2274 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2275 seq_puts(m, " Charge Fail"); 2276 2277 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2278 seq_puts(m, " Cycles Exceeded"); 2279 2280 seq_putc(m, '\n'); 2281 2282 free_inquiry: 2283 mega_free_inquiry(inquiry, dma_handle, pdev); 2284 free_pdev: 2285 free_local_pdev(pdev); 2286 return 0; 2287 } 2288 2289 2290 /* 2291 * Display scsi inquiry 2292 */ 2293 static void 2294 mega_print_inquiry(struct seq_file *m, char *scsi_inq) 2295 { 2296 int i; 2297 2298 seq_puts(m, " Vendor: "); 2299 seq_write(m, scsi_inq + 8, 8); 2300 seq_puts(m, " Model: "); 2301 seq_write(m, scsi_inq + 16, 16); 2302 seq_puts(m, " Rev: "); 2303 seq_write(m, scsi_inq + 32, 4); 2304 seq_putc(m, '\n'); 2305 2306 i = scsi_inq[0] & 0x1f; 2307 seq_printf(m, " Type: %s ", scsi_device_type(i)); 2308 2309 seq_printf(m, " ANSI SCSI revision: %02x", 2310 scsi_inq[2] & 0x07); 2311 2312 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2313 seq_puts(m, " CCS\n"); 2314 else 2315 seq_putc(m, '\n'); 2316 } 2317 2318 /** 2319 * proc_show_pdrv() 2320 * @m - Synthetic file construction data 2321 * @page - buffer to write the data in 2322 * @adapter - pointer to our soft state 2323 * 2324 * Display information about the physical drives. 2325 */ 2326 static int 2327 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel) 2328 { 2329 dma_addr_t dma_handle; 2330 char *scsi_inq; 2331 dma_addr_t scsi_inq_dma_handle; 2332 caddr_t inquiry; 2333 struct pci_dev *pdev; 2334 u8 *pdrv_state; 2335 u8 state; 2336 int tgt; 2337 int max_channels; 2338 int i; 2339 2340 if( make_local_pdev(adapter, &pdev) != 0 ) 2341 return 0; 2342 2343 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2344 goto free_pdev; 2345 2346 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2347 seq_puts(m, "Adapter inquiry failed.\n"); 2348 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2349 goto free_inquiry; 2350 } 2351 2352 2353 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2354 if( scsi_inq == NULL ) { 2355 seq_puts(m, "memory not available for scsi inq.\n"); 2356 goto free_inquiry; 2357 } 2358 2359 if( adapter->flag & BOARD_40LD ) { 2360 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2361 } 2362 else { 2363 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2364 raid_inq.pdrv_info.pdrv_state; 2365 } 2366 2367 max_channels = adapter->product_info.nchannels; 2368 2369 if( channel >= max_channels ) { 2370 goto free_pci; 2371 } 2372 2373 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2374 2375 i = channel*16 + tgt; 2376 2377 state = *(pdrv_state + i); 2378 switch( state & 0x0F ) { 2379 case PDRV_ONLINE: 2380 seq_printf(m, "Channel:%2d Id:%2d State: Online", 2381 channel, tgt); 2382 break; 2383 2384 case PDRV_FAILED: 2385 seq_printf(m, "Channel:%2d Id:%2d State: Failed", 2386 channel, tgt); 2387 break; 2388 2389 case PDRV_RBLD: 2390 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild", 2391 channel, tgt); 2392 break; 2393 2394 case PDRV_HOTSPARE: 2395 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare", 2396 channel, tgt); 2397 break; 2398 2399 default: 2400 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured", 2401 channel, tgt); 2402 break; 2403 } 2404 2405 /* 2406 * This interface displays inquiries for disk drives 2407 * only. Inquries for logical drives and non-disk 2408 * devices are available through /proc/scsi/scsi 2409 */ 2410 memset(scsi_inq, 0, 256); 2411 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2412 scsi_inq_dma_handle) || 2413 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2414 continue; 2415 } 2416 2417 /* 2418 * Check for overflow. We print less than 240 2419 * characters for inquiry 2420 */ 2421 seq_puts(m, ".\n"); 2422 mega_print_inquiry(m, scsi_inq); 2423 } 2424 2425 free_pci: 2426 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2427 free_inquiry: 2428 mega_free_inquiry(inquiry, dma_handle, pdev); 2429 free_pdev: 2430 free_local_pdev(pdev); 2431 return 0; 2432 } 2433 2434 /** 2435 * proc_show_pdrv_ch0() 2436 * @m - Synthetic file construction data 2437 * @v - File iterator 2438 * 2439 * Display information about the physical drives on physical channel 0. 2440 */ 2441 static int 2442 proc_show_pdrv_ch0(struct seq_file *m, void *v) 2443 { 2444 return proc_show_pdrv(m, m->private, 0); 2445 } 2446 2447 2448 /** 2449 * proc_show_pdrv_ch1() 2450 * @m - Synthetic file construction data 2451 * @v - File iterator 2452 * 2453 * Display information about the physical drives on physical channel 1. 2454 */ 2455 static int 2456 proc_show_pdrv_ch1(struct seq_file *m, void *v) 2457 { 2458 return proc_show_pdrv(m, m->private, 1); 2459 } 2460 2461 2462 /** 2463 * proc_show_pdrv_ch2() 2464 * @m - Synthetic file construction data 2465 * @v - File iterator 2466 * 2467 * Display information about the physical drives on physical channel 2. 2468 */ 2469 static int 2470 proc_show_pdrv_ch2(struct seq_file *m, void *v) 2471 { 2472 return proc_show_pdrv(m, m->private, 2); 2473 } 2474 2475 2476 /** 2477 * proc_show_pdrv_ch3() 2478 * @m - Synthetic file construction data 2479 * @v - File iterator 2480 * 2481 * Display information about the physical drives on physical channel 3. 2482 */ 2483 static int 2484 proc_show_pdrv_ch3(struct seq_file *m, void *v) 2485 { 2486 return proc_show_pdrv(m, m->private, 3); 2487 } 2488 2489 2490 /** 2491 * proc_show_rdrv() 2492 * @m - Synthetic file construction data 2493 * @adapter - pointer to our soft state 2494 * @start - starting logical drive to display 2495 * @end - ending logical drive to display 2496 * 2497 * We do not print the inquiry information since its already available through 2498 * /proc/scsi/scsi interface 2499 */ 2500 static int 2501 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end ) 2502 { 2503 dma_addr_t dma_handle; 2504 logdrv_param *lparam; 2505 megacmd_t mc; 2506 char *disk_array; 2507 dma_addr_t disk_array_dma_handle; 2508 caddr_t inquiry; 2509 struct pci_dev *pdev; 2510 u8 *rdrv_state; 2511 int num_ldrv; 2512 u32 array_sz; 2513 int i; 2514 2515 if( make_local_pdev(adapter, &pdev) != 0 ) 2516 return 0; 2517 2518 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2519 goto free_pdev; 2520 2521 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2522 seq_puts(m, "Adapter inquiry failed.\n"); 2523 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2524 goto free_inquiry; 2525 } 2526 2527 memset(&mc, 0, sizeof(megacmd_t)); 2528 2529 if( adapter->flag & BOARD_40LD ) { 2530 array_sz = sizeof(disk_array_40ld); 2531 2532 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2533 2534 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2535 } 2536 else { 2537 array_sz = sizeof(disk_array_8ld); 2538 2539 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2540 raid_inq.logdrv_info.ldrv_state; 2541 2542 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2543 raid_inq.logdrv_info.num_ldrv; 2544 } 2545 2546 disk_array = pci_alloc_consistent(pdev, array_sz, 2547 &disk_array_dma_handle); 2548 2549 if( disk_array == NULL ) { 2550 seq_puts(m, "memory not available.\n"); 2551 goto free_inquiry; 2552 } 2553 2554 mc.xferaddr = (u32)disk_array_dma_handle; 2555 2556 if( adapter->flag & BOARD_40LD ) { 2557 mc.cmd = FC_NEW_CONFIG; 2558 mc.opcode = OP_DCMD_READ_CONFIG; 2559 2560 if( mega_internal_command(adapter, &mc, NULL) ) { 2561 seq_puts(m, "40LD read config failed.\n"); 2562 goto free_pci; 2563 } 2564 2565 } 2566 else { 2567 mc.cmd = NEW_READ_CONFIG_8LD; 2568 2569 if( mega_internal_command(adapter, &mc, NULL) ) { 2570 mc.cmd = READ_CONFIG_8LD; 2571 if( mega_internal_command(adapter, &mc, NULL) ) { 2572 seq_puts(m, "8LD read config failed.\n"); 2573 goto free_pci; 2574 } 2575 } 2576 } 2577 2578 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 2579 2580 if( adapter->flag & BOARD_40LD ) { 2581 lparam = 2582 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 2583 } 2584 else { 2585 lparam = 2586 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 2587 } 2588 2589 /* 2590 * Check for overflow. We print less than 240 characters for 2591 * information about each logical drive. 2592 */ 2593 seq_printf(m, "Logical drive:%2d:, ", i); 2594 2595 switch( rdrv_state[i] & 0x0F ) { 2596 case RDRV_OFFLINE: 2597 seq_puts(m, "state: offline"); 2598 break; 2599 case RDRV_DEGRADED: 2600 seq_puts(m, "state: degraded"); 2601 break; 2602 case RDRV_OPTIMAL: 2603 seq_puts(m, "state: optimal"); 2604 break; 2605 case RDRV_DELETED: 2606 seq_puts(m, "state: deleted"); 2607 break; 2608 default: 2609 seq_puts(m, "state: unknown"); 2610 break; 2611 } 2612 2613 /* 2614 * Check if check consistency or initialization is going on 2615 * for this logical drive. 2616 */ 2617 if( (rdrv_state[i] & 0xF0) == 0x20 ) 2618 seq_puts(m, ", check-consistency in progress"); 2619 else if( (rdrv_state[i] & 0xF0) == 0x10 ) 2620 seq_puts(m, ", initialization in progress"); 2621 2622 seq_putc(m, '\n'); 2623 2624 seq_printf(m, "Span depth:%3d, ", lparam->span_depth); 2625 seq_printf(m, "RAID level:%3d, ", lparam->level); 2626 seq_printf(m, "Stripe size:%3d, ", 2627 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 2628 seq_printf(m, "Row size:%3d\n", lparam->row_size); 2629 2630 seq_puts(m, "Read Policy: "); 2631 switch(lparam->read_ahead) { 2632 case NO_READ_AHEAD: 2633 seq_puts(m, "No read ahead, "); 2634 break; 2635 case READ_AHEAD: 2636 seq_puts(m, "Read ahead, "); 2637 break; 2638 case ADAP_READ_AHEAD: 2639 seq_puts(m, "Adaptive, "); 2640 break; 2641 2642 } 2643 2644 seq_puts(m, "Write Policy: "); 2645 switch(lparam->write_mode) { 2646 case WRMODE_WRITE_THRU: 2647 seq_puts(m, "Write thru, "); 2648 break; 2649 case WRMODE_WRITE_BACK: 2650 seq_puts(m, "Write back, "); 2651 break; 2652 } 2653 2654 seq_puts(m, "Cache Policy: "); 2655 switch(lparam->direct_io) { 2656 case CACHED_IO: 2657 seq_puts(m, "Cached IO\n\n"); 2658 break; 2659 case DIRECT_IO: 2660 seq_puts(m, "Direct IO\n\n"); 2661 break; 2662 } 2663 } 2664 2665 free_pci: 2666 pci_free_consistent(pdev, array_sz, disk_array, 2667 disk_array_dma_handle); 2668 free_inquiry: 2669 mega_free_inquiry(inquiry, dma_handle, pdev); 2670 free_pdev: 2671 free_local_pdev(pdev); 2672 return 0; 2673 } 2674 2675 /** 2676 * proc_show_rdrv_10() 2677 * @m - Synthetic file construction data 2678 * @v - File iterator 2679 * 2680 * Display real time information about the logical drives 0 through 9. 2681 */ 2682 static int 2683 proc_show_rdrv_10(struct seq_file *m, void *v) 2684 { 2685 return proc_show_rdrv(m, m->private, 0, 9); 2686 } 2687 2688 2689 /** 2690 * proc_show_rdrv_20() 2691 * @m - Synthetic file construction data 2692 * @v - File iterator 2693 * 2694 * Display real time information about the logical drives 0 through 9. 2695 */ 2696 static int 2697 proc_show_rdrv_20(struct seq_file *m, void *v) 2698 { 2699 return proc_show_rdrv(m, m->private, 10, 19); 2700 } 2701 2702 2703 /** 2704 * proc_show_rdrv_30() 2705 * @m - Synthetic file construction data 2706 * @v - File iterator 2707 * 2708 * Display real time information about the logical drives 0 through 9. 2709 */ 2710 static int 2711 proc_show_rdrv_30(struct seq_file *m, void *v) 2712 { 2713 return proc_show_rdrv(m, m->private, 20, 29); 2714 } 2715 2716 2717 /** 2718 * proc_show_rdrv_40() 2719 * @m - Synthetic file construction data 2720 * @v - File iterator 2721 * 2722 * Display real time information about the logical drives 0 through 9. 2723 */ 2724 static int 2725 proc_show_rdrv_40(struct seq_file *m, void *v) 2726 { 2727 return proc_show_rdrv(m, m->private, 30, 39); 2728 } 2729 2730 /** 2731 * mega_create_proc_entry() 2732 * @index - index in soft state array 2733 * @parent - parent node for this /proc entry 2734 * 2735 * Creates /proc entries for our controllers. 2736 */ 2737 static void 2738 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2739 { 2740 adapter_t *adapter = hba_soft_state[index]; 2741 struct proc_dir_entry *dir; 2742 u8 string[16]; 2743 2744 sprintf(string, "hba%d", adapter->host->host_no); 2745 dir = proc_mkdir_data(string, 0, parent, adapter); 2746 if (!dir) { 2747 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n"); 2748 return; 2749 } 2750 2751 proc_create_single_data("config", S_IRUSR, dir, 2752 proc_show_config, adapter); 2753 proc_create_single_data("stat", S_IRUSR, dir, 2754 proc_show_stat, adapter); 2755 proc_create_single_data("mailbox", S_IRUSR, dir, 2756 proc_show_mbox, adapter); 2757 #if MEGA_HAVE_ENH_PROC 2758 proc_create_single_data("rebuild-rate", S_IRUSR, dir, 2759 proc_show_rebuild_rate, adapter); 2760 proc_create_single_data("battery-status", S_IRUSR, dir, 2761 proc_show_battery, adapter); 2762 proc_create_single_data("diskdrives-ch0", S_IRUSR, dir, 2763 proc_show_pdrv_ch0, adapter); 2764 proc_create_single_data("diskdrives-ch1", S_IRUSR, dir, 2765 proc_show_pdrv_ch1, adapter); 2766 proc_create_single_data("diskdrives-ch2", S_IRUSR, dir, 2767 proc_show_pdrv_ch2, adapter); 2768 proc_create_single_data("diskdrives-ch3", S_IRUSR, dir, 2769 proc_show_pdrv_ch3, adapter); 2770 proc_create_single_data("raiddrives-0-9", S_IRUSR, dir, 2771 proc_show_rdrv_10, adapter); 2772 proc_create_single_data("raiddrives-10-19", S_IRUSR, dir, 2773 proc_show_rdrv_20, adapter); 2774 proc_create_single_data("raiddrives-20-29", S_IRUSR, dir, 2775 proc_show_rdrv_30, adapter); 2776 proc_create_single_data("raiddrives-30-39", S_IRUSR, dir, 2777 proc_show_rdrv_40, adapter); 2778 #endif 2779 } 2780 2781 #else 2782 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2783 { 2784 } 2785 #endif 2786 2787 2788 /** 2789 * megaraid_biosparam() 2790 * 2791 * Return the disk geometry for a particular disk 2792 */ 2793 static int 2794 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 2795 sector_t capacity, int geom[]) 2796 { 2797 adapter_t *adapter; 2798 int heads; 2799 int sectors; 2800 int cylinders; 2801 2802 /* Get pointer to host config structure */ 2803 adapter = (adapter_t *)sdev->host->hostdata; 2804 2805 if (IS_RAID_CH(adapter, sdev->channel)) { 2806 /* Default heads (64) & sectors (32) */ 2807 heads = 64; 2808 sectors = 32; 2809 cylinders = (ulong)capacity / (heads * sectors); 2810 2811 /* 2812 * Handle extended translation size for logical drives 2813 * > 1Gb 2814 */ 2815 if ((ulong)capacity >= 0x200000) { 2816 heads = 255; 2817 sectors = 63; 2818 cylinders = (ulong)capacity / (heads * sectors); 2819 } 2820 2821 /* return result */ 2822 geom[0] = heads; 2823 geom[1] = sectors; 2824 geom[2] = cylinders; 2825 } 2826 else { 2827 if (scsi_partsize(bdev, capacity, geom)) 2828 return 0; 2829 2830 dev_info(&adapter->dev->dev, 2831 "invalid partition on this disk on channel %d\n", 2832 sdev->channel); 2833 2834 /* Default heads (64) & sectors (32) */ 2835 heads = 64; 2836 sectors = 32; 2837 cylinders = (ulong)capacity / (heads * sectors); 2838 2839 /* Handle extended translation size for logical drives > 1Gb */ 2840 if ((ulong)capacity >= 0x200000) { 2841 heads = 255; 2842 sectors = 63; 2843 cylinders = (ulong)capacity / (heads * sectors); 2844 } 2845 2846 /* return result */ 2847 geom[0] = heads; 2848 geom[1] = sectors; 2849 geom[2] = cylinders; 2850 } 2851 2852 return 0; 2853 } 2854 2855 /** 2856 * mega_init_scb() 2857 * @adapter - pointer to our soft state 2858 * 2859 * Allocate memory for the various pointers in the scb structures: 2860 * scatter-gather list pointer, passthru and extended passthru structure 2861 * pointers. 2862 */ 2863 static int 2864 mega_init_scb(adapter_t *adapter) 2865 { 2866 scb_t *scb; 2867 int i; 2868 2869 for( i = 0; i < adapter->max_cmds; i++ ) { 2870 2871 scb = &adapter->scb_list[i]; 2872 2873 scb->sgl64 = NULL; 2874 scb->sgl = NULL; 2875 scb->pthru = NULL; 2876 scb->epthru = NULL; 2877 } 2878 2879 for( i = 0; i < adapter->max_cmds; i++ ) { 2880 2881 scb = &adapter->scb_list[i]; 2882 2883 scb->idx = i; 2884 2885 scb->sgl64 = pci_alloc_consistent(adapter->dev, 2886 sizeof(mega_sgl64) * adapter->sglen, 2887 &scb->sgl_dma_addr); 2888 2889 scb->sgl = (mega_sglist *)scb->sgl64; 2890 2891 if( !scb->sgl ) { 2892 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n"); 2893 mega_free_sgl(adapter); 2894 return -1; 2895 } 2896 2897 scb->pthru = pci_alloc_consistent(adapter->dev, 2898 sizeof(mega_passthru), 2899 &scb->pthru_dma_addr); 2900 2901 if( !scb->pthru ) { 2902 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n"); 2903 mega_free_sgl(adapter); 2904 return -1; 2905 } 2906 2907 scb->epthru = pci_alloc_consistent(adapter->dev, 2908 sizeof(mega_ext_passthru), 2909 &scb->epthru_dma_addr); 2910 2911 if( !scb->epthru ) { 2912 dev_warn(&adapter->dev->dev, 2913 "Can't allocate extended passthru\n"); 2914 mega_free_sgl(adapter); 2915 return -1; 2916 } 2917 2918 2919 scb->dma_type = MEGA_DMA_TYPE_NONE; 2920 2921 /* 2922 * Link to free list 2923 * lock not required since we are loading the driver, so no 2924 * commands possible right now. 2925 */ 2926 scb->state = SCB_FREE; 2927 scb->cmd = NULL; 2928 list_add(&scb->list, &adapter->free_list); 2929 } 2930 2931 return 0; 2932 } 2933 2934 2935 /** 2936 * megadev_open() 2937 * @inode - unused 2938 * @filep - unused 2939 * 2940 * Routines for the character/ioctl interface to the driver. Find out if this 2941 * is a valid open. 2942 */ 2943 static int 2944 megadev_open (struct inode *inode, struct file *filep) 2945 { 2946 /* 2947 * Only allow superuser to access private ioctl interface 2948 */ 2949 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 2950 2951 return 0; 2952 } 2953 2954 2955 /** 2956 * megadev_ioctl() 2957 * @inode - Our device inode 2958 * @filep - unused 2959 * @cmd - ioctl command 2960 * @arg - user buffer 2961 * 2962 * ioctl entry point for our private ioctl interface. We move the data in from 2963 * the user space, prepare the command (if necessary, convert the old MIMD 2964 * ioctl to new ioctl command), and issue a synchronous command to the 2965 * controller. 2966 */ 2967 static int 2968 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 2969 { 2970 adapter_t *adapter; 2971 nitioctl_t uioc; 2972 int adapno; 2973 int rval; 2974 mega_passthru __user *upthru; /* user address for passthru */ 2975 mega_passthru *pthru; /* copy user passthru here */ 2976 dma_addr_t pthru_dma_hndl; 2977 void *data = NULL; /* data to be transferred */ 2978 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 2979 megacmd_t mc; 2980 megastat_t __user *ustats; 2981 int num_ldrv; 2982 u32 uxferaddr = 0; 2983 struct pci_dev *pdev; 2984 2985 ustats = NULL; /* avoid compilation warnings */ 2986 num_ldrv = 0; 2987 2988 /* 2989 * Make sure only USCSICMD are issued through this interface. 2990 * MIMD application would still fire different command. 2991 */ 2992 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 2993 return -EINVAL; 2994 } 2995 2996 /* 2997 * Check and convert a possible MIMD command to NIT command. 2998 * mega_m_to_n() copies the data from the user space, so we do not 2999 * have to do it here. 3000 * NOTE: We will need some user address to copyout the data, therefore 3001 * the inteface layer will also provide us with the required user 3002 * addresses. 3003 */ 3004 memset(&uioc, 0, sizeof(nitioctl_t)); 3005 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3006 return rval; 3007 3008 3009 switch( uioc.opcode ) { 3010 3011 case GET_DRIVER_VER: 3012 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3013 return (-EFAULT); 3014 3015 break; 3016 3017 case GET_N_ADAP: 3018 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3019 return (-EFAULT); 3020 3021 /* 3022 * Shucks. MIMD interface returns a positive value for number 3023 * of adapters. TODO: Change it to return 0 when there is no 3024 * applicatio using mimd interface. 3025 */ 3026 return hba_count; 3027 3028 case GET_ADAP_INFO: 3029 3030 /* 3031 * Which adapter 3032 */ 3033 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3034 return (-ENODEV); 3035 3036 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3037 sizeof(struct mcontroller)) ) 3038 return (-EFAULT); 3039 break; 3040 3041 #if MEGA_HAVE_STATS 3042 3043 case GET_STATS: 3044 /* 3045 * Which adapter 3046 */ 3047 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3048 return (-ENODEV); 3049 3050 adapter = hba_soft_state[adapno]; 3051 3052 ustats = uioc.uioc_uaddr; 3053 3054 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3055 return (-EFAULT); 3056 3057 /* 3058 * Check for the validity of the logical drive number 3059 */ 3060 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3061 3062 if( copy_to_user(ustats->nreads, adapter->nreads, 3063 num_ldrv*sizeof(u32)) ) 3064 return -EFAULT; 3065 3066 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3067 num_ldrv*sizeof(u32)) ) 3068 return -EFAULT; 3069 3070 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3071 num_ldrv*sizeof(u32)) ) 3072 return -EFAULT; 3073 3074 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3075 num_ldrv*sizeof(u32)) ) 3076 return -EFAULT; 3077 3078 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3079 num_ldrv*sizeof(u32)) ) 3080 return -EFAULT; 3081 3082 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3083 num_ldrv*sizeof(u32)) ) 3084 return -EFAULT; 3085 3086 return 0; 3087 3088 #endif 3089 case MBOX_CMD: 3090 3091 /* 3092 * Which adapter 3093 */ 3094 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3095 return (-ENODEV); 3096 3097 adapter = hba_soft_state[adapno]; 3098 3099 /* 3100 * Deletion of logical drive is a special case. The adapter 3101 * should be quiescent before this command is issued. 3102 */ 3103 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3104 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3105 3106 /* 3107 * Do we support this feature 3108 */ 3109 if( !adapter->support_random_del ) { 3110 dev_warn(&adapter->dev->dev, "logdrv " 3111 "delete on non-supporting F/W\n"); 3112 3113 return (-EINVAL); 3114 } 3115 3116 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3117 3118 if( rval == 0 ) { 3119 memset(&mc, 0, sizeof(megacmd_t)); 3120 3121 mc.status = rval; 3122 3123 rval = mega_n_to_m((void __user *)arg, &mc); 3124 } 3125 3126 return rval; 3127 } 3128 /* 3129 * This interface only support the regular passthru commands. 3130 * Reject extended passthru and 64-bit passthru 3131 */ 3132 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3133 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3134 3135 dev_warn(&adapter->dev->dev, "rejected passthru\n"); 3136 3137 return (-EINVAL); 3138 } 3139 3140 /* 3141 * For all internal commands, the buffer must be allocated in 3142 * <4GB address range 3143 */ 3144 if( make_local_pdev(adapter, &pdev) != 0 ) 3145 return -EIO; 3146 3147 /* Is it a passthru command or a DCMD */ 3148 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3149 /* Passthru commands */ 3150 3151 pthru = pci_alloc_consistent(pdev, 3152 sizeof(mega_passthru), 3153 &pthru_dma_hndl); 3154 3155 if( pthru == NULL ) { 3156 free_local_pdev(pdev); 3157 return (-ENOMEM); 3158 } 3159 3160 /* 3161 * The user passthru structure 3162 */ 3163 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; 3164 3165 /* 3166 * Copy in the user passthru here. 3167 */ 3168 if( copy_from_user(pthru, upthru, 3169 sizeof(mega_passthru)) ) { 3170 3171 pci_free_consistent(pdev, 3172 sizeof(mega_passthru), pthru, 3173 pthru_dma_hndl); 3174 3175 free_local_pdev(pdev); 3176 3177 return (-EFAULT); 3178 } 3179 3180 /* 3181 * Is there a data transfer 3182 */ 3183 if( pthru->dataxferlen ) { 3184 data = pci_alloc_consistent(pdev, 3185 pthru->dataxferlen, 3186 &data_dma_hndl); 3187 3188 if( data == NULL ) { 3189 pci_free_consistent(pdev, 3190 sizeof(mega_passthru), 3191 pthru, 3192 pthru_dma_hndl); 3193 3194 free_local_pdev(pdev); 3195 3196 return (-ENOMEM); 3197 } 3198 3199 /* 3200 * Save the user address and point the kernel 3201 * address at just allocated memory 3202 */ 3203 uxferaddr = pthru->dataxferaddr; 3204 pthru->dataxferaddr = data_dma_hndl; 3205 } 3206 3207 3208 /* 3209 * Is data coming down-stream 3210 */ 3211 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3212 /* 3213 * Get the user data 3214 */ 3215 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3216 pthru->dataxferlen) ) { 3217 rval = (-EFAULT); 3218 goto freemem_and_return; 3219 } 3220 } 3221 3222 memset(&mc, 0, sizeof(megacmd_t)); 3223 3224 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3225 mc.xferaddr = (u32)pthru_dma_hndl; 3226 3227 /* 3228 * Issue the command 3229 */ 3230 mega_internal_command(adapter, &mc, pthru); 3231 3232 rval = mega_n_to_m((void __user *)arg, &mc); 3233 3234 if( rval ) goto freemem_and_return; 3235 3236 3237 /* 3238 * Is data going up-stream 3239 */ 3240 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3241 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3242 pthru->dataxferlen) ) { 3243 rval = (-EFAULT); 3244 } 3245 } 3246 3247 /* 3248 * Send the request sense data also, irrespective of 3249 * whether the user has asked for it or not. 3250 */ 3251 if (copy_to_user(upthru->reqsensearea, 3252 pthru->reqsensearea, 14)) 3253 rval = -EFAULT; 3254 3255 freemem_and_return: 3256 if( pthru->dataxferlen ) { 3257 pci_free_consistent(pdev, 3258 pthru->dataxferlen, data, 3259 data_dma_hndl); 3260 } 3261 3262 pci_free_consistent(pdev, sizeof(mega_passthru), 3263 pthru, pthru_dma_hndl); 3264 3265 free_local_pdev(pdev); 3266 3267 return rval; 3268 } 3269 else { 3270 /* DCMD commands */ 3271 3272 /* 3273 * Is there a data transfer 3274 */ 3275 if( uioc.xferlen ) { 3276 data = pci_alloc_consistent(pdev, 3277 uioc.xferlen, &data_dma_hndl); 3278 3279 if( data == NULL ) { 3280 free_local_pdev(pdev); 3281 return (-ENOMEM); 3282 } 3283 3284 uxferaddr = MBOX(uioc)->xferaddr; 3285 } 3286 3287 /* 3288 * Is data coming down-stream 3289 */ 3290 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3291 /* 3292 * Get the user data 3293 */ 3294 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3295 uioc.xferlen) ) { 3296 3297 pci_free_consistent(pdev, 3298 uioc.xferlen, 3299 data, data_dma_hndl); 3300 3301 free_local_pdev(pdev); 3302 3303 return (-EFAULT); 3304 } 3305 } 3306 3307 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3308 3309 mc.xferaddr = (u32)data_dma_hndl; 3310 3311 /* 3312 * Issue the command 3313 */ 3314 mega_internal_command(adapter, &mc, NULL); 3315 3316 rval = mega_n_to_m((void __user *)arg, &mc); 3317 3318 if( rval ) { 3319 if( uioc.xferlen ) { 3320 pci_free_consistent(pdev, 3321 uioc.xferlen, data, 3322 data_dma_hndl); 3323 } 3324 3325 free_local_pdev(pdev); 3326 3327 return rval; 3328 } 3329 3330 /* 3331 * Is data going up-stream 3332 */ 3333 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3334 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3335 uioc.xferlen) ) { 3336 3337 rval = (-EFAULT); 3338 } 3339 } 3340 3341 if( uioc.xferlen ) { 3342 pci_free_consistent(pdev, 3343 uioc.xferlen, data, 3344 data_dma_hndl); 3345 } 3346 3347 free_local_pdev(pdev); 3348 3349 return rval; 3350 } 3351 3352 default: 3353 return (-EINVAL); 3354 } 3355 3356 return 0; 3357 } 3358 3359 static long 3360 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3361 { 3362 int ret; 3363 3364 mutex_lock(&megadev_mutex); 3365 ret = megadev_ioctl(filep, cmd, arg); 3366 mutex_unlock(&megadev_mutex); 3367 3368 return ret; 3369 } 3370 3371 /** 3372 * mega_m_to_n() 3373 * @arg - user address 3374 * @uioc - new ioctl structure 3375 * 3376 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3377 * structure 3378 * 3379 * Converts the older mimd ioctl structure to newer NIT structure 3380 */ 3381 static int 3382 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3383 { 3384 struct uioctl_t uioc_mimd; 3385 char signature[8] = {0}; 3386 u8 opcode; 3387 u8 subopcode; 3388 3389 3390 /* 3391 * check is the application conforms to NIT. We do not have to do much 3392 * in that case. 3393 * We exploit the fact that the signature is stored in the very 3394 * beginning of the structure. 3395 */ 3396 3397 if( copy_from_user(signature, arg, 7) ) 3398 return (-EFAULT); 3399 3400 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3401 3402 /* 3403 * NOTE NOTE: The nit ioctl is still under flux because of 3404 * change of mailbox definition, in HPE. No applications yet 3405 * use this interface and let's not have applications use this 3406 * interface till the new specifitions are in place. 3407 */ 3408 return -EINVAL; 3409 #if 0 3410 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3411 return (-EFAULT); 3412 return 0; 3413 #endif 3414 } 3415 3416 /* 3417 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3418 * 3419 * Get the user ioctl structure 3420 */ 3421 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3422 return (-EFAULT); 3423 3424 3425 /* 3426 * Get the opcode and subopcode for the commands 3427 */ 3428 opcode = uioc_mimd.ui.fcs.opcode; 3429 subopcode = uioc_mimd.ui.fcs.subopcode; 3430 3431 switch (opcode) { 3432 case 0x82: 3433 3434 switch (subopcode) { 3435 3436 case MEGAIOC_QDRVRVER: /* Query driver version */ 3437 uioc->opcode = GET_DRIVER_VER; 3438 uioc->uioc_uaddr = uioc_mimd.data; 3439 break; 3440 3441 case MEGAIOC_QNADAP: /* Get # of adapters */ 3442 uioc->opcode = GET_N_ADAP; 3443 uioc->uioc_uaddr = uioc_mimd.data; 3444 break; 3445 3446 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3447 uioc->opcode = GET_ADAP_INFO; 3448 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3449 uioc->uioc_uaddr = uioc_mimd.data; 3450 break; 3451 3452 default: 3453 return(-EINVAL); 3454 } 3455 3456 break; 3457 3458 3459 case 0x81: 3460 3461 uioc->opcode = MBOX_CMD; 3462 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3463 3464 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3465 3466 uioc->xferlen = uioc_mimd.ui.fcs.length; 3467 3468 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3469 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3470 3471 break; 3472 3473 case 0x80: 3474 3475 uioc->opcode = MBOX_CMD; 3476 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3477 3478 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3479 3480 /* 3481 * Choose the xferlen bigger of input and output data 3482 */ 3483 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3484 uioc_mimd.outlen : uioc_mimd.inlen; 3485 3486 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3487 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3488 3489 break; 3490 3491 default: 3492 return (-EINVAL); 3493 3494 } 3495 3496 return 0; 3497 } 3498 3499 /* 3500 * mega_n_to_m() 3501 * @arg - user address 3502 * @mc - mailbox command 3503 * 3504 * Updates the status information to the application, depending on application 3505 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3506 */ 3507 static int 3508 mega_n_to_m(void __user *arg, megacmd_t *mc) 3509 { 3510 nitioctl_t __user *uiocp; 3511 megacmd_t __user *umc; 3512 mega_passthru __user *upthru; 3513 struct uioctl_t __user *uioc_mimd; 3514 char signature[8] = {0}; 3515 3516 /* 3517 * check is the application conforms to NIT. 3518 */ 3519 if( copy_from_user(signature, arg, 7) ) 3520 return -EFAULT; 3521 3522 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3523 3524 uiocp = arg; 3525 3526 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3527 return (-EFAULT); 3528 3529 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3530 3531 umc = MBOX_P(uiocp); 3532 3533 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3534 return -EFAULT; 3535 3536 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3537 return (-EFAULT); 3538 } 3539 } 3540 else { 3541 uioc_mimd = arg; 3542 3543 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3544 return (-EFAULT); 3545 3546 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3547 3548 umc = (megacmd_t __user *)uioc_mimd->mbox; 3549 3550 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3551 return (-EFAULT); 3552 3553 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3554 return (-EFAULT); 3555 } 3556 } 3557 3558 return 0; 3559 } 3560 3561 3562 /* 3563 * MEGARAID 'FW' commands. 3564 */ 3565 3566 /** 3567 * mega_is_bios_enabled() 3568 * @adapter - pointer to our soft state 3569 * 3570 * issue command to find out if the BIOS is enabled for this controller 3571 */ 3572 static int 3573 mega_is_bios_enabled(adapter_t *adapter) 3574 { 3575 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3576 mbox_t *mbox; 3577 int ret; 3578 3579 mbox = (mbox_t *)raw_mbox; 3580 3581 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3582 3583 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3584 3585 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3586 3587 raw_mbox[0] = IS_BIOS_ENABLED; 3588 raw_mbox[2] = GET_BIOS; 3589 3590 3591 ret = issue_scb_block(adapter, raw_mbox); 3592 3593 return *(char *)adapter->mega_buffer; 3594 } 3595 3596 3597 /** 3598 * mega_enum_raid_scsi() 3599 * @adapter - pointer to our soft state 3600 * 3601 * Find out what channels are RAID/SCSI. This information is used to 3602 * differentiate the virtual channels and physical channels and to support 3603 * ROMB feature and non-disk devices. 3604 */ 3605 static void 3606 mega_enum_raid_scsi(adapter_t *adapter) 3607 { 3608 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3609 mbox_t *mbox; 3610 int i; 3611 3612 mbox = (mbox_t *)raw_mbox; 3613 3614 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3615 3616 /* 3617 * issue command to find out what channels are raid/scsi 3618 */ 3619 raw_mbox[0] = CHNL_CLASS; 3620 raw_mbox[2] = GET_CHNL_CLASS; 3621 3622 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3623 3624 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3625 3626 /* 3627 * Non-ROMB firmware fail this command, so all channels 3628 * must be shown RAID 3629 */ 3630 adapter->mega_ch_class = 0xFF; 3631 3632 if(!issue_scb_block(adapter, raw_mbox)) { 3633 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 3634 3635 } 3636 3637 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3638 if( (adapter->mega_ch_class >> i) & 0x01 ) { 3639 dev_info(&adapter->dev->dev, "channel[%d] is raid\n", 3640 i); 3641 } 3642 else { 3643 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n", 3644 i); 3645 } 3646 } 3647 3648 return; 3649 } 3650 3651 3652 /** 3653 * mega_get_boot_drv() 3654 * @adapter - pointer to our soft state 3655 * 3656 * Find out which device is the boot device. Note, any logical drive or any 3657 * phyical device (e.g., a CDROM) can be designated as a boot device. 3658 */ 3659 static void 3660 mega_get_boot_drv(adapter_t *adapter) 3661 { 3662 struct private_bios_data *prv_bios_data; 3663 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3664 mbox_t *mbox; 3665 u16 cksum = 0; 3666 u8 *cksum_p; 3667 u8 boot_pdrv; 3668 int i; 3669 3670 mbox = (mbox_t *)raw_mbox; 3671 3672 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3673 3674 raw_mbox[0] = BIOS_PVT_DATA; 3675 raw_mbox[2] = GET_BIOS_PVT_DATA; 3676 3677 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3678 3679 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3680 3681 adapter->boot_ldrv_enabled = 0; 3682 adapter->boot_ldrv = 0; 3683 3684 adapter->boot_pdrv_enabled = 0; 3685 adapter->boot_pdrv_ch = 0; 3686 adapter->boot_pdrv_tgt = 0; 3687 3688 if(issue_scb_block(adapter, raw_mbox) == 0) { 3689 prv_bios_data = 3690 (struct private_bios_data *)adapter->mega_buffer; 3691 3692 cksum = 0; 3693 cksum_p = (char *)prv_bios_data; 3694 for (i = 0; i < 14; i++ ) { 3695 cksum += (u16)(*cksum_p++); 3696 } 3697 3698 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 3699 3700 /* 3701 * If MSB is set, a physical drive is set as boot 3702 * device 3703 */ 3704 if( prv_bios_data->boot_drv & 0x80 ) { 3705 adapter->boot_pdrv_enabled = 1; 3706 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 3707 adapter->boot_pdrv_ch = boot_pdrv / 16; 3708 adapter->boot_pdrv_tgt = boot_pdrv % 16; 3709 } 3710 else { 3711 adapter->boot_ldrv_enabled = 1; 3712 adapter->boot_ldrv = prv_bios_data->boot_drv; 3713 } 3714 } 3715 } 3716 3717 } 3718 3719 /** 3720 * mega_support_random_del() 3721 * @adapter - pointer to our soft state 3722 * 3723 * Find out if this controller supports random deletion and addition of 3724 * logical drives 3725 */ 3726 static int 3727 mega_support_random_del(adapter_t *adapter) 3728 { 3729 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3730 mbox_t *mbox; 3731 int rval; 3732 3733 mbox = (mbox_t *)raw_mbox; 3734 3735 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3736 3737 /* 3738 * issue command 3739 */ 3740 raw_mbox[0] = FC_DEL_LOGDRV; 3741 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 3742 3743 rval = issue_scb_block(adapter, raw_mbox); 3744 3745 return !rval; 3746 } 3747 3748 3749 /** 3750 * mega_support_ext_cdb() 3751 * @adapter - pointer to our soft state 3752 * 3753 * Find out if this firmware support cdblen > 10 3754 */ 3755 static int 3756 mega_support_ext_cdb(adapter_t *adapter) 3757 { 3758 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3759 mbox_t *mbox; 3760 int rval; 3761 3762 mbox = (mbox_t *)raw_mbox; 3763 3764 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3765 /* 3766 * issue command to find out if controller supports extended CDBs. 3767 */ 3768 raw_mbox[0] = 0xA4; 3769 raw_mbox[2] = 0x16; 3770 3771 rval = issue_scb_block(adapter, raw_mbox); 3772 3773 return !rval; 3774 } 3775 3776 3777 /** 3778 * mega_del_logdrv() 3779 * @adapter - pointer to our soft state 3780 * @logdrv - logical drive to be deleted 3781 * 3782 * Delete the specified logical drive. It is the responsibility of the user 3783 * app to let the OS know about this operation. 3784 */ 3785 static int 3786 mega_del_logdrv(adapter_t *adapter, int logdrv) 3787 { 3788 unsigned long flags; 3789 scb_t *scb; 3790 int rval; 3791 3792 /* 3793 * Stop sending commands to the controller, queue them internally. 3794 * When deletion is complete, ISR will flush the queue. 3795 */ 3796 atomic_set(&adapter->quiescent, 1); 3797 3798 /* 3799 * Wait till all the issued commands are complete and there are no 3800 * commands in the pending queue 3801 */ 3802 while (atomic_read(&adapter->pend_cmds) > 0 || 3803 !list_empty(&adapter->pending_list)) 3804 msleep(1000); /* sleep for 1s */ 3805 3806 rval = mega_do_del_logdrv(adapter, logdrv); 3807 3808 spin_lock_irqsave(&adapter->lock, flags); 3809 3810 /* 3811 * If delete operation was successful, add 0x80 to the logical drive 3812 * ids for commands in the pending queue. 3813 */ 3814 if (adapter->read_ldidmap) { 3815 struct list_head *pos; 3816 list_for_each(pos, &adapter->pending_list) { 3817 scb = list_entry(pos, scb_t, list); 3818 if (scb->pthru->logdrv < 0x80 ) 3819 scb->pthru->logdrv += 0x80; 3820 } 3821 } 3822 3823 atomic_set(&adapter->quiescent, 0); 3824 3825 mega_runpendq(adapter); 3826 3827 spin_unlock_irqrestore(&adapter->lock, flags); 3828 3829 return rval; 3830 } 3831 3832 3833 static int 3834 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 3835 { 3836 megacmd_t mc; 3837 int rval; 3838 3839 memset( &mc, 0, sizeof(megacmd_t)); 3840 3841 mc.cmd = FC_DEL_LOGDRV; 3842 mc.opcode = OP_DEL_LOGDRV; 3843 mc.subopcode = logdrv; 3844 3845 rval = mega_internal_command(adapter, &mc, NULL); 3846 3847 /* log this event */ 3848 if(rval) { 3849 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv); 3850 return rval; 3851 } 3852 3853 /* 3854 * After deleting first logical drive, the logical drives must be 3855 * addressed by adding 0x80 to the logical drive id. 3856 */ 3857 adapter->read_ldidmap = 1; 3858 3859 return rval; 3860 } 3861 3862 3863 /** 3864 * mega_get_max_sgl() 3865 * @adapter - pointer to our soft state 3866 * 3867 * Find out the maximum number of scatter-gather elements supported by this 3868 * version of the firmware 3869 */ 3870 static void 3871 mega_get_max_sgl(adapter_t *adapter) 3872 { 3873 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3874 mbox_t *mbox; 3875 3876 mbox = (mbox_t *)raw_mbox; 3877 3878 memset(mbox, 0, sizeof(raw_mbox)); 3879 3880 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3881 3882 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3883 3884 raw_mbox[0] = MAIN_MISC_OPCODE; 3885 raw_mbox[2] = GET_MAX_SG_SUPPORT; 3886 3887 3888 if( issue_scb_block(adapter, raw_mbox) ) { 3889 /* 3890 * f/w does not support this command. Choose the default value 3891 */ 3892 adapter->sglen = MIN_SGLIST; 3893 } 3894 else { 3895 adapter->sglen = *((char *)adapter->mega_buffer); 3896 3897 /* 3898 * Make sure this is not more than the resources we are 3899 * planning to allocate 3900 */ 3901 if ( adapter->sglen > MAX_SGLIST ) 3902 adapter->sglen = MAX_SGLIST; 3903 } 3904 3905 return; 3906 } 3907 3908 3909 /** 3910 * mega_support_cluster() 3911 * @adapter - pointer to our soft state 3912 * 3913 * Find out if this firmware support cluster calls. 3914 */ 3915 static int 3916 mega_support_cluster(adapter_t *adapter) 3917 { 3918 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3919 mbox_t *mbox; 3920 3921 mbox = (mbox_t *)raw_mbox; 3922 3923 memset(mbox, 0, sizeof(raw_mbox)); 3924 3925 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3926 3927 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3928 3929 /* 3930 * Try to get the initiator id. This command will succeed iff the 3931 * clustering is available on this HBA. 3932 */ 3933 raw_mbox[0] = MEGA_GET_TARGET_ID; 3934 3935 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 3936 3937 /* 3938 * Cluster support available. Get the initiator target id. 3939 * Tell our id to mid-layer too. 3940 */ 3941 adapter->this_id = *(u32 *)adapter->mega_buffer; 3942 adapter->host->this_id = adapter->this_id; 3943 3944 return 1; 3945 } 3946 3947 return 0; 3948 } 3949 3950 #ifdef CONFIG_PROC_FS 3951 /** 3952 * mega_adapinq() 3953 * @adapter - pointer to our soft state 3954 * @dma_handle - DMA address of the buffer 3955 * 3956 * Issue internal commands while interrupts are available. 3957 * We only issue direct mailbox commands from within the driver. ioctl() 3958 * interface using these routines can issue passthru commands. 3959 */ 3960 static int 3961 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 3962 { 3963 megacmd_t mc; 3964 3965 memset(&mc, 0, sizeof(megacmd_t)); 3966 3967 if( adapter->flag & BOARD_40LD ) { 3968 mc.cmd = FC_NEW_CONFIG; 3969 mc.opcode = NC_SUBOP_ENQUIRY3; 3970 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 3971 } 3972 else { 3973 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 3974 } 3975 3976 mc.xferaddr = (u32)dma_handle; 3977 3978 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 3979 return -1; 3980 } 3981 3982 return 0; 3983 } 3984 3985 3986 /** mega_internal_dev_inquiry() 3987 * @adapter - pointer to our soft state 3988 * @ch - channel for this device 3989 * @tgt - ID of this device 3990 * @buf_dma_handle - DMA address of the buffer 3991 * 3992 * Issue the scsi inquiry for the specified device. 3993 */ 3994 static int 3995 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 3996 dma_addr_t buf_dma_handle) 3997 { 3998 mega_passthru *pthru; 3999 dma_addr_t pthru_dma_handle; 4000 megacmd_t mc; 4001 int rval; 4002 struct pci_dev *pdev; 4003 4004 4005 /* 4006 * For all internal commands, the buffer must be allocated in <4GB 4007 * address range 4008 */ 4009 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4010 4011 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4012 &pthru_dma_handle); 4013 4014 if( pthru == NULL ) { 4015 free_local_pdev(pdev); 4016 return -1; 4017 } 4018 4019 pthru->timeout = 2; 4020 pthru->ars = 1; 4021 pthru->reqsenselen = 14; 4022 pthru->islogical = 0; 4023 4024 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4025 4026 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4027 4028 pthru->cdblen = 6; 4029 4030 pthru->cdb[0] = INQUIRY; 4031 pthru->cdb[1] = 0; 4032 pthru->cdb[2] = 0; 4033 pthru->cdb[3] = 0; 4034 pthru->cdb[4] = 255; 4035 pthru->cdb[5] = 0; 4036 4037 4038 pthru->dataxferaddr = (u32)buf_dma_handle; 4039 pthru->dataxferlen = 256; 4040 4041 memset(&mc, 0, sizeof(megacmd_t)); 4042 4043 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4044 mc.xferaddr = (u32)pthru_dma_handle; 4045 4046 rval = mega_internal_command(adapter, &mc, pthru); 4047 4048 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4049 pthru_dma_handle); 4050 4051 free_local_pdev(pdev); 4052 4053 return rval; 4054 } 4055 #endif 4056 4057 /** 4058 * mega_internal_command() 4059 * @adapter - pointer to our soft state 4060 * @mc - the mailbox command 4061 * @pthru - Passthru structure for DCDB commands 4062 * 4063 * Issue the internal commands in interrupt mode. 4064 * The last argument is the address of the passthru structure if the command 4065 * to be fired is a passthru command 4066 * 4067 * Note: parameter 'pthru' is null for non-passthru commands. 4068 */ 4069 static int 4070 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4071 { 4072 unsigned long flags; 4073 scb_t *scb; 4074 int rval; 4075 4076 /* 4077 * The internal commands share one command id and hence are 4078 * serialized. This is so because we want to reserve maximum number of 4079 * available command ids for the I/O commands. 4080 */ 4081 mutex_lock(&adapter->int_mtx); 4082 4083 scb = &adapter->int_scb; 4084 memset(scb, 0, sizeof(scb_t)); 4085 4086 scb->idx = CMDID_INT_CMDS; 4087 scb->state |= SCB_ACTIVE | SCB_PENDQ; 4088 4089 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4090 4091 /* 4092 * Is it a passthru command 4093 */ 4094 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU) 4095 scb->pthru = pthru; 4096 4097 spin_lock_irqsave(&adapter->lock, flags); 4098 list_add_tail(&scb->list, &adapter->pending_list); 4099 /* 4100 * Check if the HBA is in quiescent state, e.g., during a 4101 * delete logical drive opertion. If it is, don't run 4102 * the pending_list. 4103 */ 4104 if (atomic_read(&adapter->quiescent) == 0) 4105 mega_runpendq(adapter); 4106 spin_unlock_irqrestore(&adapter->lock, flags); 4107 4108 wait_for_completion(&adapter->int_waitq); 4109 4110 mc->status = rval = adapter->int_status; 4111 4112 /* 4113 * Print a debug message for all failed commands. Applications can use 4114 * this information. 4115 */ 4116 if (rval && trace_level) { 4117 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n", 4118 mc->cmd, mc->opcode, mc->subopcode, rval); 4119 } 4120 4121 mutex_unlock(&adapter->int_mtx); 4122 return rval; 4123 } 4124 4125 static struct scsi_host_template megaraid_template = { 4126 .module = THIS_MODULE, 4127 .name = "MegaRAID", 4128 .proc_name = "megaraid_legacy", 4129 .info = megaraid_info, 4130 .queuecommand = megaraid_queue, 4131 .bios_param = megaraid_biosparam, 4132 .max_sectors = MAX_SECTORS_PER_IO, 4133 .can_queue = MAX_COMMANDS, 4134 .this_id = DEFAULT_INITIATOR_ID, 4135 .sg_tablesize = MAX_SGLIST, 4136 .cmd_per_lun = DEF_CMD_PER_LUN, 4137 .eh_abort_handler = megaraid_abort, 4138 .eh_device_reset_handler = megaraid_reset, 4139 .eh_bus_reset_handler = megaraid_reset, 4140 .eh_host_reset_handler = megaraid_reset, 4141 .no_write_same = 1, 4142 }; 4143 4144 static int 4145 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4146 { 4147 struct Scsi_Host *host; 4148 adapter_t *adapter; 4149 unsigned long mega_baseport, tbase, flag = 0; 4150 u16 subsysid, subsysvid; 4151 u8 pci_bus, pci_dev_func; 4152 int irq, i, j; 4153 int error = -ENODEV; 4154 4155 if (hba_count >= MAX_CONTROLLERS) 4156 goto out; 4157 4158 if (pci_enable_device(pdev)) 4159 goto out; 4160 pci_set_master(pdev); 4161 4162 pci_bus = pdev->bus->number; 4163 pci_dev_func = pdev->devfn; 4164 4165 /* 4166 * The megaraid3 stuff reports the ID of the Intel part which is not 4167 * remotely specific to the megaraid 4168 */ 4169 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4170 u16 magic; 4171 /* 4172 * Don't fall over the Compaq management cards using the same 4173 * PCI identifier 4174 */ 4175 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4176 pdev->subsystem_device == 0xC000) 4177 goto out_disable_device; 4178 /* Now check the magic signature byte */ 4179 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4180 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4181 goto out_disable_device; 4182 /* Ok it is probably a megaraid */ 4183 } 4184 4185 /* 4186 * For these vendor and device ids, signature offsets are not 4187 * valid and 64 bit is implicit 4188 */ 4189 if (id->driver_data & BOARD_64BIT) 4190 flag |= BOARD_64BIT; 4191 else { 4192 u32 magic64; 4193 4194 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4195 if (magic64 == HBA_SIGNATURE_64BIT) 4196 flag |= BOARD_64BIT; 4197 } 4198 4199 subsysvid = pdev->subsystem_vendor; 4200 subsysid = pdev->subsystem_device; 4201 4202 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n", 4203 id->vendor, id->device); 4204 4205 /* Read the base port and IRQ from PCI */ 4206 mega_baseport = pci_resource_start(pdev, 0); 4207 irq = pdev->irq; 4208 4209 tbase = mega_baseport; 4210 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4211 flag |= BOARD_MEMMAP; 4212 4213 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4214 dev_warn(&pdev->dev, "mem region busy!\n"); 4215 goto out_disable_device; 4216 } 4217 4218 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4219 if (!mega_baseport) { 4220 dev_warn(&pdev->dev, "could not map hba memory\n"); 4221 goto out_release_region; 4222 } 4223 } else { 4224 flag |= BOARD_IOMAP; 4225 mega_baseport += 0x10; 4226 4227 if (!request_region(mega_baseport, 16, "megaraid")) 4228 goto out_disable_device; 4229 } 4230 4231 /* Initialize SCSI Host structure */ 4232 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4233 if (!host) 4234 goto out_iounmap; 4235 4236 adapter = (adapter_t *)host->hostdata; 4237 memset(adapter, 0, sizeof(adapter_t)); 4238 4239 dev_notice(&pdev->dev, 4240 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4241 host->host_no, mega_baseport, irq); 4242 4243 adapter->base = mega_baseport; 4244 if (flag & BOARD_MEMMAP) 4245 adapter->mmio_base = (void __iomem *) mega_baseport; 4246 4247 INIT_LIST_HEAD(&adapter->free_list); 4248 INIT_LIST_HEAD(&adapter->pending_list); 4249 INIT_LIST_HEAD(&adapter->completed_list); 4250 4251 adapter->flag = flag; 4252 spin_lock_init(&adapter->lock); 4253 4254 host->cmd_per_lun = max_cmd_per_lun; 4255 host->max_sectors = max_sectors_per_io; 4256 4257 adapter->dev = pdev; 4258 adapter->host = host; 4259 4260 adapter->host->irq = irq; 4261 4262 if (flag & BOARD_MEMMAP) 4263 adapter->host->base = tbase; 4264 else { 4265 adapter->host->io_port = tbase; 4266 adapter->host->n_io_port = 16; 4267 } 4268 4269 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4270 4271 /* 4272 * Allocate buffer to issue internal commands. 4273 */ 4274 adapter->mega_buffer = pci_alloc_consistent(adapter->dev, 4275 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); 4276 if (!adapter->mega_buffer) { 4277 dev_warn(&pdev->dev, "out of RAM\n"); 4278 goto out_host_put; 4279 } 4280 4281 adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t), 4282 GFP_KERNEL); 4283 if (!adapter->scb_list) { 4284 dev_warn(&pdev->dev, "out of RAM\n"); 4285 goto out_free_cmd_buffer; 4286 } 4287 4288 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4289 megaraid_isr_memmapped : megaraid_isr_iomapped, 4290 IRQF_SHARED, "megaraid", adapter)) { 4291 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq); 4292 goto out_free_scb_list; 4293 } 4294 4295 if (mega_setup_mailbox(adapter)) 4296 goto out_free_irq; 4297 4298 if (mega_query_adapter(adapter)) 4299 goto out_free_mbox; 4300 4301 /* 4302 * Have checks for some buggy f/w 4303 */ 4304 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4305 /* 4306 * Which firmware 4307 */ 4308 if (!strcmp(adapter->fw_version, "3.00") || 4309 !strcmp(adapter->fw_version, "3.01")) { 4310 4311 dev_warn(&pdev->dev, 4312 "Your card is a Dell PERC " 4313 "2/SC RAID controller with " 4314 "firmware\nmegaraid: 3.00 or 3.01. " 4315 "This driver is known to have " 4316 "corruption issues\nmegaraid: with " 4317 "those firmware versions on this " 4318 "specific card. In order\nmegaraid: " 4319 "to protect your data, please upgrade " 4320 "your firmware to version\nmegaraid: " 4321 "3.10 or later, available from the " 4322 "Dell Technical Support web\n" 4323 "megaraid: site at\nhttp://support." 4324 "dell.com/us/en/filelib/download/" 4325 "index.asp?fileid=2940\n" 4326 ); 4327 } 4328 } 4329 4330 /* 4331 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4332 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4333 * support, since this firmware cannot handle 64 bit 4334 * addressing 4335 */ 4336 if ((subsysvid == PCI_VENDOR_ID_HP) && 4337 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4338 /* 4339 * which firmware 4340 */ 4341 if (!strcmp(adapter->fw_version, "H01.07") || 4342 !strcmp(adapter->fw_version, "H01.08") || 4343 !strcmp(adapter->fw_version, "H01.09") ) { 4344 dev_warn(&pdev->dev, 4345 "Firmware H.01.07, " 4346 "H.01.08, and H.01.09 on 1M/2M " 4347 "controllers\n" 4348 "do not support 64 bit " 4349 "addressing.\nDISABLING " 4350 "64 bit support.\n"); 4351 adapter->flag &= ~BOARD_64BIT; 4352 } 4353 } 4354 4355 if (mega_is_bios_enabled(adapter)) 4356 mega_hbas[hba_count].is_bios_enabled = 1; 4357 mega_hbas[hba_count].hostdata_addr = adapter; 4358 4359 /* 4360 * Find out which channel is raid and which is scsi. This is 4361 * for ROMB support. 4362 */ 4363 mega_enum_raid_scsi(adapter); 4364 4365 /* 4366 * Find out if a logical drive is set as the boot drive. If 4367 * there is one, will make that as the first logical drive. 4368 * ROMB: Do we have to boot from a physical drive. Then all 4369 * the physical drives would appear before the logical disks. 4370 * Else, all the physical drives would be exported to the mid 4371 * layer after logical drives. 4372 */ 4373 mega_get_boot_drv(adapter); 4374 4375 if (adapter->boot_pdrv_enabled) { 4376 j = adapter->product_info.nchannels; 4377 for( i = 0; i < j; i++ ) 4378 adapter->logdrv_chan[i] = 0; 4379 for( i = j; i < NVIRT_CHAN + j; i++ ) 4380 adapter->logdrv_chan[i] = 1; 4381 } else { 4382 for (i = 0; i < NVIRT_CHAN; i++) 4383 adapter->logdrv_chan[i] = 1; 4384 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4385 adapter->logdrv_chan[i] = 0; 4386 adapter->mega_ch_class <<= NVIRT_CHAN; 4387 } 4388 4389 /* 4390 * Do we support random deletion and addition of logical 4391 * drives 4392 */ 4393 adapter->read_ldidmap = 0; /* set it after first logdrv 4394 delete cmd */ 4395 adapter->support_random_del = mega_support_random_del(adapter); 4396 4397 /* Initialize SCBs */ 4398 if (mega_init_scb(adapter)) 4399 goto out_free_mbox; 4400 4401 /* 4402 * Reset the pending commands counter 4403 */ 4404 atomic_set(&adapter->pend_cmds, 0); 4405 4406 /* 4407 * Reset the adapter quiescent flag 4408 */ 4409 atomic_set(&adapter->quiescent, 0); 4410 4411 hba_soft_state[hba_count] = adapter; 4412 4413 /* 4414 * Fill in the structure which needs to be passed back to the 4415 * application when it does an ioctl() for controller related 4416 * information. 4417 */ 4418 i = hba_count; 4419 4420 mcontroller[i].base = mega_baseport; 4421 mcontroller[i].irq = irq; 4422 mcontroller[i].numldrv = adapter->numldrv; 4423 mcontroller[i].pcibus = pci_bus; 4424 mcontroller[i].pcidev = id->device; 4425 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4426 mcontroller[i].pciid = -1; 4427 mcontroller[i].pcivendor = id->vendor; 4428 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4429 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4430 4431 4432 /* Set the Mode of addressing to 64 bit if we can */ 4433 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4434 pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 4435 adapter->has_64bit_addr = 1; 4436 } else { 4437 pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 4438 adapter->has_64bit_addr = 0; 4439 } 4440 4441 mutex_init(&adapter->int_mtx); 4442 init_completion(&adapter->int_waitq); 4443 4444 adapter->this_id = DEFAULT_INITIATOR_ID; 4445 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4446 4447 #if MEGA_HAVE_CLUSTERING 4448 /* 4449 * Is cluster support enabled on this controller 4450 * Note: In a cluster the HBAs ( the initiators ) will have 4451 * different target IDs and we cannot assume it to be 7. Call 4452 * to mega_support_cluster() will get the target ids also if 4453 * the cluster support is available 4454 */ 4455 adapter->has_cluster = mega_support_cluster(adapter); 4456 if (adapter->has_cluster) { 4457 dev_notice(&pdev->dev, 4458 "Cluster driver, initiator id:%d\n", 4459 adapter->this_id); 4460 } 4461 #endif 4462 4463 pci_set_drvdata(pdev, host); 4464 4465 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4466 4467 error = scsi_add_host(host, &pdev->dev); 4468 if (error) 4469 goto out_free_mbox; 4470 4471 scsi_scan_host(host); 4472 hba_count++; 4473 return 0; 4474 4475 out_free_mbox: 4476 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4477 adapter->una_mbox64, adapter->una_mbox64_dma); 4478 out_free_irq: 4479 free_irq(adapter->host->irq, adapter); 4480 out_free_scb_list: 4481 kfree(adapter->scb_list); 4482 out_free_cmd_buffer: 4483 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4484 adapter->mega_buffer, adapter->buf_dma_handle); 4485 out_host_put: 4486 scsi_host_put(host); 4487 out_iounmap: 4488 if (flag & BOARD_MEMMAP) 4489 iounmap((void *)mega_baseport); 4490 out_release_region: 4491 if (flag & BOARD_MEMMAP) 4492 release_mem_region(tbase, 128); 4493 else 4494 release_region(mega_baseport, 16); 4495 out_disable_device: 4496 pci_disable_device(pdev); 4497 out: 4498 return error; 4499 } 4500 4501 static void 4502 __megaraid_shutdown(adapter_t *adapter) 4503 { 4504 u_char raw_mbox[sizeof(struct mbox_out)]; 4505 mbox_t *mbox = (mbox_t *)raw_mbox; 4506 int i; 4507 4508 /* Flush adapter cache */ 4509 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4510 raw_mbox[0] = FLUSH_ADAPTER; 4511 4512 free_irq(adapter->host->irq, adapter); 4513 4514 /* Issue a blocking (interrupts disabled) command to the card */ 4515 issue_scb_block(adapter, raw_mbox); 4516 4517 /* Flush disks cache */ 4518 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4519 raw_mbox[0] = FLUSH_SYSTEM; 4520 4521 /* Issue a blocking (interrupts disabled) command to the card */ 4522 issue_scb_block(adapter, raw_mbox); 4523 4524 if (atomic_read(&adapter->pend_cmds) > 0) 4525 dev_warn(&adapter->dev->dev, "pending commands!!\n"); 4526 4527 /* 4528 * Have a delibrate delay to make sure all the caches are 4529 * actually flushed. 4530 */ 4531 for (i = 0; i <= 10; i++) 4532 mdelay(1000); 4533 } 4534 4535 static void 4536 megaraid_remove_one(struct pci_dev *pdev) 4537 { 4538 struct Scsi_Host *host = pci_get_drvdata(pdev); 4539 adapter_t *adapter = (adapter_t *)host->hostdata; 4540 char buf[12] = { 0 }; 4541 4542 scsi_remove_host(host); 4543 4544 __megaraid_shutdown(adapter); 4545 4546 /* Free our resources */ 4547 if (adapter->flag & BOARD_MEMMAP) { 4548 iounmap((void *)adapter->base); 4549 release_mem_region(adapter->host->base, 128); 4550 } else 4551 release_region(adapter->base, 16); 4552 4553 mega_free_sgl(adapter); 4554 4555 sprintf(buf, "hba%d", adapter->host->host_no); 4556 remove_proc_subtree(buf, mega_proc_dir_entry); 4557 4558 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4559 adapter->mega_buffer, adapter->buf_dma_handle); 4560 kfree(adapter->scb_list); 4561 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4562 adapter->una_mbox64, adapter->una_mbox64_dma); 4563 4564 scsi_host_put(host); 4565 pci_disable_device(pdev); 4566 4567 hba_count--; 4568 } 4569 4570 static void 4571 megaraid_shutdown(struct pci_dev *pdev) 4572 { 4573 struct Scsi_Host *host = pci_get_drvdata(pdev); 4574 adapter_t *adapter = (adapter_t *)host->hostdata; 4575 4576 __megaraid_shutdown(adapter); 4577 } 4578 4579 static struct pci_device_id megaraid_pci_tbl[] = { 4580 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 4581 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4582 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 4583 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4584 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 4585 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4586 {0,} 4587 }; 4588 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 4589 4590 static struct pci_driver megaraid_pci_driver = { 4591 .name = "megaraid_legacy", 4592 .id_table = megaraid_pci_tbl, 4593 .probe = megaraid_probe_one, 4594 .remove = megaraid_remove_one, 4595 .shutdown = megaraid_shutdown, 4596 }; 4597 4598 static int __init megaraid_init(void) 4599 { 4600 int error; 4601 4602 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 4603 max_cmd_per_lun = MAX_CMD_PER_LUN; 4604 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 4605 max_mbox_busy_wait = MBOX_BUSY_WAIT; 4606 4607 #ifdef CONFIG_PROC_FS 4608 mega_proc_dir_entry = proc_mkdir("megaraid", NULL); 4609 if (!mega_proc_dir_entry) { 4610 printk(KERN_WARNING 4611 "megaraid: failed to create megaraid root\n"); 4612 } 4613 #endif 4614 error = pci_register_driver(&megaraid_pci_driver); 4615 if (error) { 4616 #ifdef CONFIG_PROC_FS 4617 remove_proc_entry("megaraid", NULL); 4618 #endif 4619 return error; 4620 } 4621 4622 /* 4623 * Register the driver as a character device, for applications 4624 * to access it for ioctls. 4625 * First argument (major) to register_chrdev implies a dynamic 4626 * major number allocation. 4627 */ 4628 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 4629 if (!major) { 4630 printk(KERN_WARNING 4631 "megaraid: failed to register char device\n"); 4632 } 4633 4634 return 0; 4635 } 4636 4637 static void __exit megaraid_exit(void) 4638 { 4639 /* 4640 * Unregister the character device interface to the driver. 4641 */ 4642 unregister_chrdev(major, "megadev_legacy"); 4643 4644 pci_unregister_driver(&megaraid_pci_driver); 4645 4646 #ifdef CONFIG_PROC_FS 4647 remove_proc_entry("megaraid", NULL); 4648 #endif 4649 } 4650 4651 module_init(megaraid_init); 4652 module_exit(megaraid_exit); 4653 4654 /* vi: set ts=8 sw=8 tw=78: */ 4655