1 /* 2 * 3 * Linux MegaRAID device driver 4 * 5 * Copyright (c) 2002 LSI Logic Corporation. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 * 12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved. 13 * - fixes 14 * - speed-ups (list handling fixes, issued_list, optimizations.) 15 * - lots of cleanups. 16 * 17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de> 18 * - new-style, hotplug-aware pci probing and scsi registration 19 * 20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju 21 * <Seokmann.Ju@lsil.com> 22 * 23 * Description: Linux device driver for LSI Logic MegaRAID controller 24 * 25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 26 * 518, 520, 531, 532 27 * 28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell, 29 * and others. Please send updates to the mailing list 30 * linux-scsi@vger.kernel.org . 31 * 32 */ 33 34 #include <linux/mm.h> 35 #include <linux/fs.h> 36 #include <linux/blkdev.h> 37 #include <linux/uaccess.h> 38 #include <asm/io.h> 39 #include <linux/completion.h> 40 #include <linux/delay.h> 41 #include <linux/proc_fs.h> 42 #include <linux/seq_file.h> 43 #include <linux/reboot.h> 44 #include <linux/module.h> 45 #include <linux/list.h> 46 #include <linux/interrupt.h> 47 #include <linux/pci.h> 48 #include <linux/init.h> 49 #include <linux/dma-mapping.h> 50 #include <linux/mutex.h> 51 #include <linux/slab.h> 52 #include <scsi/scsicam.h> 53 54 #include "scsi.h" 55 #include <scsi/scsi_host.h> 56 57 #include "megaraid.h" 58 59 #define MEGARAID_MODULE_VERSION "2.00.4" 60 61 MODULE_AUTHOR ("sju@lsil.com"); 62 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver"); 63 MODULE_LICENSE ("GPL"); 64 MODULE_VERSION(MEGARAID_MODULE_VERSION); 65 66 static DEFINE_MUTEX(megadev_mutex); 67 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; 68 module_param(max_cmd_per_lun, uint, 0); 69 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)"); 70 71 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO; 72 module_param(max_sectors_per_io, ushort, 0); 73 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)"); 74 75 76 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; 77 module_param(max_mbox_busy_wait, ushort, 0); 78 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)"); 79 80 #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20) 81 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C) 82 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20) 83 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C) 84 85 /* 86 * Global variables 87 */ 88 89 static int hba_count; 90 static adapter_t *hba_soft_state[MAX_CONTROLLERS]; 91 static struct proc_dir_entry *mega_proc_dir_entry; 92 93 /* For controller re-ordering */ 94 static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; 95 96 static long 97 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); 98 99 /* 100 * The File Operations structure for the serial/ioctl interface of the driver 101 */ 102 static const struct file_operations megadev_fops = { 103 .owner = THIS_MODULE, 104 .unlocked_ioctl = megadev_unlocked_ioctl, 105 .open = megadev_open, 106 .llseek = noop_llseek, 107 }; 108 109 /* 110 * Array to structures for storing the information about the controllers. This 111 * information is sent to the user level applications, when they do an ioctl 112 * for this information. 113 */ 114 static struct mcontroller mcontroller[MAX_CONTROLLERS]; 115 116 /* The current driver version */ 117 static u32 driver_ver = 0x02000000; 118 119 /* major number used by the device for character interface */ 120 static int major; 121 122 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01) 123 124 125 /* 126 * Debug variable to print some diagnostic messages 127 */ 128 static int trace_level; 129 130 /** 131 * mega_setup_mailbox() 132 * @adapter - pointer to our soft state 133 * 134 * Allocates a 8 byte aligned memory for the handshake mailbox. 135 */ 136 static int 137 mega_setup_mailbox(adapter_t *adapter) 138 { 139 unsigned long align; 140 141 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev, 142 sizeof(mbox64_t), &adapter->una_mbox64_dma); 143 144 if( !adapter->una_mbox64 ) return -1; 145 146 adapter->mbox = &adapter->una_mbox64->mbox; 147 148 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & 149 (~0UL ^ 0xFUL)); 150 151 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); 152 153 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); 154 155 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; 156 157 /* 158 * Register the mailbox if the controller is an io-mapped controller 159 */ 160 if( adapter->flag & BOARD_IOMAP ) { 161 162 outb(adapter->mbox_dma & 0xFF, 163 adapter->host->io_port + MBOX_PORT0); 164 165 outb((adapter->mbox_dma >> 8) & 0xFF, 166 adapter->host->io_port + MBOX_PORT1); 167 168 outb((adapter->mbox_dma >> 16) & 0xFF, 169 adapter->host->io_port + MBOX_PORT2); 170 171 outb((adapter->mbox_dma >> 24) & 0xFF, 172 adapter->host->io_port + MBOX_PORT3); 173 174 outb(ENABLE_MBOX_BYTE, 175 adapter->host->io_port + ENABLE_MBOX_REGION); 176 177 irq_ack(adapter); 178 179 irq_enable(adapter); 180 } 181 182 return 0; 183 } 184 185 186 /* 187 * mega_query_adapter() 188 * @adapter - pointer to our soft state 189 * 190 * Issue the adapter inquiry commands to the controller and find out 191 * information and parameter about the devices attached 192 */ 193 static int 194 mega_query_adapter(adapter_t *adapter) 195 { 196 dma_addr_t prod_info_dma_handle; 197 mega_inquiry3 *inquiry3; 198 u8 raw_mbox[sizeof(struct mbox_out)]; 199 mbox_t *mbox; 200 int retval; 201 202 /* Initialize adapter inquiry mailbox */ 203 204 mbox = (mbox_t *)raw_mbox; 205 206 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 207 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 208 209 /* 210 * Try to issue Inquiry3 command 211 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and 212 * update enquiry3 structure 213 */ 214 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 215 216 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; 217 218 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 219 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ 220 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ 221 222 /* Issue a blocking command to the card */ 223 if ((retval = issue_scb_block(adapter, raw_mbox))) { 224 /* the adapter does not support 40ld */ 225 226 mraid_ext_inquiry *ext_inq; 227 mraid_inquiry *inq; 228 dma_addr_t dma_handle; 229 230 ext_inq = pci_alloc_consistent(adapter->dev, 231 sizeof(mraid_ext_inquiry), &dma_handle); 232 233 if( ext_inq == NULL ) return -1; 234 235 inq = &ext_inq->raid_inq; 236 237 mbox->m_out.xferaddr = (u32)dma_handle; 238 239 /*issue old 0x04 command to adapter */ 240 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ; 241 242 issue_scb_block(adapter, raw_mbox); 243 244 /* 245 * update Enquiry3 and ProductInfo structures with 246 * mraid_inquiry structure 247 */ 248 mega_8_to_40ld(inq, inquiry3, 249 (mega_product_info *)&adapter->product_info); 250 251 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry), 252 ext_inq, dma_handle); 253 254 } else { /*adapter supports 40ld */ 255 adapter->flag |= BOARD_40LD; 256 257 /* 258 * get product_info, which is static information and will be 259 * unchanged 260 */ 261 prod_info_dma_handle = pci_map_single(adapter->dev, (void *) 262 &adapter->product_info, 263 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 264 265 mbox->m_out.xferaddr = prod_info_dma_handle; 266 267 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 268 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ 269 270 if ((retval = issue_scb_block(adapter, raw_mbox))) 271 dev_warn(&adapter->dev->dev, 272 "Product_info cmd failed with error: %d\n", 273 retval); 274 275 pci_unmap_single(adapter->dev, prod_info_dma_handle, 276 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 277 } 278 279 280 /* 281 * kernel scans the channels from 0 to <= max_channel 282 */ 283 adapter->host->max_channel = 284 adapter->product_info.nchannels + NVIRT_CHAN -1; 285 286 adapter->host->max_id = 16; /* max targets per channel */ 287 288 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */ 289 290 adapter->host->cmd_per_lun = max_cmd_per_lun; 291 292 adapter->numldrv = inquiry3->num_ldrv; 293 294 adapter->max_cmds = adapter->product_info.max_commands; 295 296 if(adapter->max_cmds > MAX_COMMANDS) 297 adapter->max_cmds = MAX_COMMANDS; 298 299 adapter->host->can_queue = adapter->max_cmds - 1; 300 301 /* 302 * Get the maximum number of scatter-gather elements supported by this 303 * firmware 304 */ 305 mega_get_max_sgl(adapter); 306 307 adapter->host->sg_tablesize = adapter->sglen; 308 309 /* use HP firmware and bios version encoding 310 Note: fw_version[0|1] and bios_version[0|1] were originally shifted 311 right 8 bits making them zero. This 0 value was hardcoded to fix 312 sparse warnings. */ 313 if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) { 314 snprintf(adapter->fw_version, sizeof(adapter->fw_version), 315 "%c%d%d.%d%d", 316 adapter->product_info.fw_version[2], 317 0, 318 adapter->product_info.fw_version[1] & 0x0f, 319 0, 320 adapter->product_info.fw_version[0] & 0x0f); 321 snprintf(adapter->bios_version, sizeof(adapter->fw_version), 322 "%c%d%d.%d%d", 323 adapter->product_info.bios_version[2], 324 0, 325 adapter->product_info.bios_version[1] & 0x0f, 326 0, 327 adapter->product_info.bios_version[0] & 0x0f); 328 } else { 329 memcpy(adapter->fw_version, 330 (char *)adapter->product_info.fw_version, 4); 331 adapter->fw_version[4] = 0; 332 333 memcpy(adapter->bios_version, 334 (char *)adapter->product_info.bios_version, 4); 335 336 adapter->bios_version[4] = 0; 337 } 338 339 dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n", 340 adapter->fw_version, adapter->bios_version, adapter->numldrv); 341 342 /* 343 * Do we support extended (>10 bytes) cdbs 344 */ 345 adapter->support_ext_cdb = mega_support_ext_cdb(adapter); 346 if (adapter->support_ext_cdb) 347 dev_notice(&adapter->dev->dev, "supports extended CDBs\n"); 348 349 350 return 0; 351 } 352 353 /** 354 * mega_runpendq() 355 * @adapter - pointer to our soft state 356 * 357 * Runs through the list of pending requests. 358 */ 359 static inline void 360 mega_runpendq(adapter_t *adapter) 361 { 362 if(!list_empty(&adapter->pending_list)) 363 __mega_runpendq(adapter); 364 } 365 366 /* 367 * megaraid_queue() 368 * @scmd - Issue this scsi command 369 * @done - the callback hook into the scsi mid-layer 370 * 371 * The command queuing entry point for the mid-layer. 372 */ 373 static int 374 megaraid_queue_lck(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *)) 375 { 376 adapter_t *adapter; 377 scb_t *scb; 378 int busy=0; 379 unsigned long flags; 380 381 adapter = (adapter_t *)scmd->device->host->hostdata; 382 383 scmd->scsi_done = done; 384 385 386 /* 387 * Allocate and build a SCB request 388 * busy flag will be set if mega_build_cmd() command could not 389 * allocate scb. We will return non-zero status in that case. 390 * NOTE: scb can be null even though certain commands completed 391 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would 392 * return 0 in that case. 393 */ 394 395 spin_lock_irqsave(&adapter->lock, flags); 396 scb = mega_build_cmd(adapter, scmd, &busy); 397 if (!scb) 398 goto out; 399 400 scb->state |= SCB_PENDQ; 401 list_add_tail(&scb->list, &adapter->pending_list); 402 403 /* 404 * Check if the HBA is in quiescent state, e.g., during a 405 * delete logical drive opertion. If it is, don't run 406 * the pending_list. 407 */ 408 if (atomic_read(&adapter->quiescent) == 0) 409 mega_runpendq(adapter); 410 411 busy = 0; 412 out: 413 spin_unlock_irqrestore(&adapter->lock, flags); 414 return busy; 415 } 416 417 static DEF_SCSI_QCMD(megaraid_queue) 418 419 /** 420 * mega_allocate_scb() 421 * @adapter - pointer to our soft state 422 * @cmd - scsi command from the mid-layer 423 * 424 * Allocate a SCB structure. This is the central structure for controller 425 * commands. 426 */ 427 static inline scb_t * 428 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd) 429 { 430 struct list_head *head = &adapter->free_list; 431 scb_t *scb; 432 433 /* Unlink command from Free List */ 434 if( !list_empty(head) ) { 435 436 scb = list_entry(head->next, scb_t, list); 437 438 list_del_init(head->next); 439 440 scb->state = SCB_ACTIVE; 441 scb->cmd = cmd; 442 scb->dma_type = MEGA_DMA_TYPE_NONE; 443 444 return scb; 445 } 446 447 return NULL; 448 } 449 450 /** 451 * mega_get_ldrv_num() 452 * @adapter - pointer to our soft state 453 * @cmd - scsi mid layer command 454 * @channel - channel on the controller 455 * 456 * Calculate the logical drive number based on the information in scsi command 457 * and the channel number. 458 */ 459 static inline int 460 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel) 461 { 462 int tgt; 463 int ldrv_num; 464 465 tgt = cmd->device->id; 466 467 if ( tgt > adapter->this_id ) 468 tgt--; /* we do not get inquires for initiator id */ 469 470 ldrv_num = (channel * 15) + tgt; 471 472 473 /* 474 * If we have a logical drive with boot enabled, project it first 475 */ 476 if( adapter->boot_ldrv_enabled ) { 477 if( ldrv_num == 0 ) { 478 ldrv_num = adapter->boot_ldrv; 479 } 480 else { 481 if( ldrv_num <= adapter->boot_ldrv ) { 482 ldrv_num--; 483 } 484 } 485 } 486 487 /* 488 * If "delete logical drive" feature is enabled on this controller. 489 * Do only if at least one delete logical drive operation was done. 490 * 491 * Also, after logical drive deletion, instead of logical drive number, 492 * the value returned should be 0x80+logical drive id. 493 * 494 * These is valid only for IO commands. 495 */ 496 497 if (adapter->support_random_del && adapter->read_ldidmap ) 498 switch (cmd->cmnd[0]) { 499 case READ_6: /* fall through */ 500 case WRITE_6: /* fall through */ 501 case READ_10: /* fall through */ 502 case WRITE_10: 503 ldrv_num += 0x80; 504 } 505 506 return ldrv_num; 507 } 508 509 /** 510 * mega_build_cmd() 511 * @adapter - pointer to our soft state 512 * @cmd - Prepare using this scsi command 513 * @busy - busy flag if no resources 514 * 515 * Prepares a command and scatter gather list for the controller. This routine 516 * also finds out if the commands is intended for a logical drive or a 517 * physical device and prepares the controller command accordingly. 518 * 519 * We also re-order the logical drives and physical devices based on their 520 * boot settings. 521 */ 522 static scb_t * 523 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy) 524 { 525 mega_ext_passthru *epthru; 526 mega_passthru *pthru; 527 scb_t *scb; 528 mbox_t *mbox; 529 u32 seg; 530 char islogical; 531 int max_ldrv_num; 532 int channel = 0; 533 int target = 0; 534 int ldrv_num = 0; /* logical drive number */ 535 536 /* 537 * We know what channels our logical drives are on - mega_find_card() 538 */ 539 islogical = adapter->logdrv_chan[cmd->device->channel]; 540 541 /* 542 * The theory: If physical drive is chosen for boot, all the physical 543 * devices are exported before the logical drives, otherwise physical 544 * devices are pushed after logical drives, in which case - Kernel sees 545 * the physical devices on virtual channel which is obviously converted 546 * to actual channel on the HBA. 547 */ 548 if( adapter->boot_pdrv_enabled ) { 549 if( islogical ) { 550 /* logical channel */ 551 channel = cmd->device->channel - 552 adapter->product_info.nchannels; 553 } 554 else { 555 /* this is physical channel */ 556 channel = cmd->device->channel; 557 target = cmd->device->id; 558 559 /* 560 * boot from a physical disk, that disk needs to be 561 * exposed first IF both the channels are SCSI, then 562 * booting from the second channel is not allowed. 563 */ 564 if( target == 0 ) { 565 target = adapter->boot_pdrv_tgt; 566 } 567 else if( target == adapter->boot_pdrv_tgt ) { 568 target = 0; 569 } 570 } 571 } 572 else { 573 if( islogical ) { 574 /* this is the logical channel */ 575 channel = cmd->device->channel; 576 } 577 else { 578 /* physical channel */ 579 channel = cmd->device->channel - NVIRT_CHAN; 580 target = cmd->device->id; 581 } 582 } 583 584 585 if(islogical) { 586 587 /* have just LUN 0 for each target on virtual channels */ 588 if (cmd->device->lun) { 589 cmd->result = (DID_BAD_TARGET << 16); 590 cmd->scsi_done(cmd); 591 return NULL; 592 } 593 594 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 595 596 597 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 598 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 599 600 /* 601 * max_ldrv_num increases by 0x80 if some logical drive was 602 * deleted. 603 */ 604 if(adapter->read_ldidmap) 605 max_ldrv_num += 0x80; 606 607 if(ldrv_num > max_ldrv_num ) { 608 cmd->result = (DID_BAD_TARGET << 16); 609 cmd->scsi_done(cmd); 610 return NULL; 611 } 612 613 } 614 else { 615 if( cmd->device->lun > 7) { 616 /* 617 * Do not support lun >7 for physically accessed 618 * devices 619 */ 620 cmd->result = (DID_BAD_TARGET << 16); 621 cmd->scsi_done(cmd); 622 return NULL; 623 } 624 } 625 626 /* 627 * 628 * Logical drive commands 629 * 630 */ 631 if(islogical) { 632 switch (cmd->cmnd[0]) { 633 case TEST_UNIT_READY: 634 #if MEGA_HAVE_CLUSTERING 635 /* 636 * Do we support clustering and is the support enabled 637 * If no, return success always 638 */ 639 if( !adapter->has_cluster ) { 640 cmd->result = (DID_OK << 16); 641 cmd->scsi_done(cmd); 642 return NULL; 643 } 644 645 if(!(scb = mega_allocate_scb(adapter, cmd))) { 646 *busy = 1; 647 return NULL; 648 } 649 650 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 651 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 652 scb->raw_mbox[3] = ldrv_num; 653 654 scb->dma_direction = PCI_DMA_NONE; 655 656 return scb; 657 #else 658 cmd->result = (DID_OK << 16); 659 cmd->scsi_done(cmd); 660 return NULL; 661 #endif 662 663 case MODE_SENSE: { 664 char *buf; 665 struct scatterlist *sg; 666 667 sg = scsi_sglist(cmd); 668 buf = kmap_atomic(sg_page(sg)) + sg->offset; 669 670 memset(buf, 0, cmd->cmnd[4]); 671 kunmap_atomic(buf - sg->offset); 672 673 cmd->result = (DID_OK << 16); 674 cmd->scsi_done(cmd); 675 return NULL; 676 } 677 678 case READ_CAPACITY: 679 case INQUIRY: 680 681 if(!(adapter->flag & (1L << cmd->device->channel))) { 682 683 dev_notice(&adapter->dev->dev, 684 "scsi%d: scanning scsi channel %d " 685 "for logical drives\n", 686 adapter->host->host_no, 687 cmd->device->channel); 688 689 adapter->flag |= (1L << cmd->device->channel); 690 } 691 692 /* Allocate a SCB and initialize passthru */ 693 if(!(scb = mega_allocate_scb(adapter, cmd))) { 694 *busy = 1; 695 return NULL; 696 } 697 pthru = scb->pthru; 698 699 mbox = (mbox_t *)scb->raw_mbox; 700 memset(mbox, 0, sizeof(scb->raw_mbox)); 701 memset(pthru, 0, sizeof(mega_passthru)); 702 703 pthru->timeout = 0; 704 pthru->ars = 1; 705 pthru->reqsenselen = 14; 706 pthru->islogical = 1; 707 pthru->logdrv = ldrv_num; 708 pthru->cdblen = cmd->cmd_len; 709 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 710 711 if( adapter->has_64bit_addr ) { 712 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 713 } 714 else { 715 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 716 } 717 718 scb->dma_direction = PCI_DMA_FROMDEVICE; 719 720 pthru->numsgelements = mega_build_sglist(adapter, scb, 721 &pthru->dataxferaddr, &pthru->dataxferlen); 722 723 mbox->m_out.xferaddr = scb->pthru_dma_addr; 724 725 return scb; 726 727 case READ_6: 728 case WRITE_6: 729 case READ_10: 730 case WRITE_10: 731 case READ_12: 732 case WRITE_12: 733 734 /* Allocate a SCB and initialize mailbox */ 735 if(!(scb = mega_allocate_scb(adapter, cmd))) { 736 *busy = 1; 737 return NULL; 738 } 739 mbox = (mbox_t *)scb->raw_mbox; 740 741 memset(mbox, 0, sizeof(scb->raw_mbox)); 742 mbox->m_out.logdrv = ldrv_num; 743 744 /* 745 * A little hack: 2nd bit is zero for all scsi read 746 * commands and is set for all scsi write commands 747 */ 748 if( adapter->has_64bit_addr ) { 749 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 750 MEGA_MBOXCMD_LWRITE64: 751 MEGA_MBOXCMD_LREAD64 ; 752 } 753 else { 754 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 755 MEGA_MBOXCMD_LWRITE: 756 MEGA_MBOXCMD_LREAD ; 757 } 758 759 /* 760 * 6-byte READ(0x08) or WRITE(0x0A) cdb 761 */ 762 if( cmd->cmd_len == 6 ) { 763 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 764 mbox->m_out.lba = 765 ((u32)cmd->cmnd[1] << 16) | 766 ((u32)cmd->cmnd[2] << 8) | 767 (u32)cmd->cmnd[3]; 768 769 mbox->m_out.lba &= 0x1FFFFF; 770 771 #if MEGA_HAVE_STATS 772 /* 773 * Take modulo 0x80, since the logical drive 774 * number increases by 0x80 when a logical 775 * drive was deleted 776 */ 777 if (*cmd->cmnd == READ_6) { 778 adapter->nreads[ldrv_num%0x80]++; 779 adapter->nreadblocks[ldrv_num%0x80] += 780 mbox->m_out.numsectors; 781 } else { 782 adapter->nwrites[ldrv_num%0x80]++; 783 adapter->nwriteblocks[ldrv_num%0x80] += 784 mbox->m_out.numsectors; 785 } 786 #endif 787 } 788 789 /* 790 * 10-byte READ(0x28) or WRITE(0x2A) cdb 791 */ 792 if( cmd->cmd_len == 10 ) { 793 mbox->m_out.numsectors = 794 (u32)cmd->cmnd[8] | 795 ((u32)cmd->cmnd[7] << 8); 796 mbox->m_out.lba = 797 ((u32)cmd->cmnd[2] << 24) | 798 ((u32)cmd->cmnd[3] << 16) | 799 ((u32)cmd->cmnd[4] << 8) | 800 (u32)cmd->cmnd[5]; 801 802 #if MEGA_HAVE_STATS 803 if (*cmd->cmnd == READ_10) { 804 adapter->nreads[ldrv_num%0x80]++; 805 adapter->nreadblocks[ldrv_num%0x80] += 806 mbox->m_out.numsectors; 807 } else { 808 adapter->nwrites[ldrv_num%0x80]++; 809 adapter->nwriteblocks[ldrv_num%0x80] += 810 mbox->m_out.numsectors; 811 } 812 #endif 813 } 814 815 /* 816 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 817 */ 818 if( cmd->cmd_len == 12 ) { 819 mbox->m_out.lba = 820 ((u32)cmd->cmnd[2] << 24) | 821 ((u32)cmd->cmnd[3] << 16) | 822 ((u32)cmd->cmnd[4] << 8) | 823 (u32)cmd->cmnd[5]; 824 825 mbox->m_out.numsectors = 826 ((u32)cmd->cmnd[6] << 24) | 827 ((u32)cmd->cmnd[7] << 16) | 828 ((u32)cmd->cmnd[8] << 8) | 829 (u32)cmd->cmnd[9]; 830 831 #if MEGA_HAVE_STATS 832 if (*cmd->cmnd == READ_12) { 833 adapter->nreads[ldrv_num%0x80]++; 834 adapter->nreadblocks[ldrv_num%0x80] += 835 mbox->m_out.numsectors; 836 } else { 837 adapter->nwrites[ldrv_num%0x80]++; 838 adapter->nwriteblocks[ldrv_num%0x80] += 839 mbox->m_out.numsectors; 840 } 841 #endif 842 } 843 844 /* 845 * If it is a read command 846 */ 847 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 848 scb->dma_direction = PCI_DMA_FROMDEVICE; 849 } 850 else { 851 scb->dma_direction = PCI_DMA_TODEVICE; 852 } 853 854 /* Calculate Scatter-Gather info */ 855 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 856 (u32 *)&mbox->m_out.xferaddr, &seg); 857 858 return scb; 859 860 #if MEGA_HAVE_CLUSTERING 861 case RESERVE: /* Fall through */ 862 case RELEASE: 863 864 /* 865 * Do we support clustering and is the support enabled 866 */ 867 if( ! adapter->has_cluster ) { 868 869 cmd->result = (DID_BAD_TARGET << 16); 870 cmd->scsi_done(cmd); 871 return NULL; 872 } 873 874 /* Allocate a SCB and initialize mailbox */ 875 if(!(scb = mega_allocate_scb(adapter, cmd))) { 876 *busy = 1; 877 return NULL; 878 } 879 880 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 881 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? 882 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 883 884 scb->raw_mbox[3] = ldrv_num; 885 886 scb->dma_direction = PCI_DMA_NONE; 887 888 return scb; 889 #endif 890 891 default: 892 cmd->result = (DID_BAD_TARGET << 16); 893 cmd->scsi_done(cmd); 894 return NULL; 895 } 896 } 897 898 /* 899 * Passthru drive commands 900 */ 901 else { 902 /* Allocate a SCB and initialize passthru */ 903 if(!(scb = mega_allocate_scb(adapter, cmd))) { 904 *busy = 1; 905 return NULL; 906 } 907 908 mbox = (mbox_t *)scb->raw_mbox; 909 memset(mbox, 0, sizeof(scb->raw_mbox)); 910 911 if( adapter->support_ext_cdb ) { 912 913 epthru = mega_prepare_extpassthru(adapter, scb, cmd, 914 channel, target); 915 916 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 917 918 mbox->m_out.xferaddr = scb->epthru_dma_addr; 919 920 } 921 else { 922 923 pthru = mega_prepare_passthru(adapter, scb, cmd, 924 channel, target); 925 926 /* Initialize mailbox */ 927 if( adapter->has_64bit_addr ) { 928 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 929 } 930 else { 931 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 932 } 933 934 mbox->m_out.xferaddr = scb->pthru_dma_addr; 935 936 } 937 return scb; 938 } 939 return NULL; 940 } 941 942 943 /** 944 * mega_prepare_passthru() 945 * @adapter - pointer to our soft state 946 * @scb - our scsi control block 947 * @cmd - scsi command from the mid-layer 948 * @channel - actual channel on the controller 949 * @target - actual id on the controller. 950 * 951 * prepare a command for the scsi physical devices. 952 */ 953 static mega_passthru * 954 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 955 int channel, int target) 956 { 957 mega_passthru *pthru; 958 959 pthru = scb->pthru; 960 memset(pthru, 0, sizeof (mega_passthru)); 961 962 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 963 pthru->timeout = 2; 964 965 pthru->ars = 1; 966 pthru->reqsenselen = 14; 967 pthru->islogical = 0; 968 969 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 970 971 pthru->target = (adapter->flag & BOARD_40LD) ? 972 (channel << 4) | target : target; 973 974 pthru->cdblen = cmd->cmd_len; 975 pthru->logdrv = cmd->device->lun; 976 977 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 978 979 /* Not sure about the direction */ 980 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 981 982 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 983 switch (cmd->cmnd[0]) { 984 case INQUIRY: 985 case READ_CAPACITY: 986 if(!(adapter->flag & (1L << cmd->device->channel))) { 987 988 dev_notice(&adapter->dev->dev, 989 "scsi%d: scanning scsi channel %d [P%d] " 990 "for physical devices\n", 991 adapter->host->host_no, 992 cmd->device->channel, channel); 993 994 adapter->flag |= (1L << cmd->device->channel); 995 } 996 /* Fall through */ 997 default: 998 pthru->numsgelements = mega_build_sglist(adapter, scb, 999 &pthru->dataxferaddr, &pthru->dataxferlen); 1000 break; 1001 } 1002 return pthru; 1003 } 1004 1005 1006 /** 1007 * mega_prepare_extpassthru() 1008 * @adapter - pointer to our soft state 1009 * @scb - our scsi control block 1010 * @cmd - scsi command from the mid-layer 1011 * @channel - actual channel on the controller 1012 * @target - actual id on the controller. 1013 * 1014 * prepare a command for the scsi physical devices. This rountine prepares 1015 * commands for devices which can take extended CDBs (>10 bytes) 1016 */ 1017 static mega_ext_passthru * 1018 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 1019 int channel, int target) 1020 { 1021 mega_ext_passthru *epthru; 1022 1023 epthru = scb->epthru; 1024 memset(epthru, 0, sizeof(mega_ext_passthru)); 1025 1026 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1027 epthru->timeout = 2; 1028 1029 epthru->ars = 1; 1030 epthru->reqsenselen = 14; 1031 epthru->islogical = 0; 1032 1033 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1034 epthru->target = (adapter->flag & BOARD_40LD) ? 1035 (channel << 4) | target : target; 1036 1037 epthru->cdblen = cmd->cmd_len; 1038 epthru->logdrv = cmd->device->lun; 1039 1040 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1041 1042 /* Not sure about the direction */ 1043 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 1044 1045 switch(cmd->cmnd[0]) { 1046 case INQUIRY: 1047 case READ_CAPACITY: 1048 if(!(adapter->flag & (1L << cmd->device->channel))) { 1049 1050 dev_notice(&adapter->dev->dev, 1051 "scsi%d: scanning scsi channel %d [P%d] " 1052 "for physical devices\n", 1053 adapter->host->host_no, 1054 cmd->device->channel, channel); 1055 1056 adapter->flag |= (1L << cmd->device->channel); 1057 } 1058 /* Fall through */ 1059 default: 1060 epthru->numsgelements = mega_build_sglist(adapter, scb, 1061 &epthru->dataxferaddr, &epthru->dataxferlen); 1062 break; 1063 } 1064 1065 return epthru; 1066 } 1067 1068 static void 1069 __mega_runpendq(adapter_t *adapter) 1070 { 1071 scb_t *scb; 1072 struct list_head *pos, *next; 1073 1074 /* Issue any pending commands to the card */ 1075 list_for_each_safe(pos, next, &adapter->pending_list) { 1076 1077 scb = list_entry(pos, scb_t, list); 1078 1079 if( !(scb->state & SCB_ISSUED) ) { 1080 1081 if( issue_scb(adapter, scb) != 0 ) 1082 return; 1083 } 1084 } 1085 1086 return; 1087 } 1088 1089 1090 /** 1091 * issue_scb() 1092 * @adapter - pointer to our soft state 1093 * @scb - scsi control block 1094 * 1095 * Post a command to the card if the mailbox is available, otherwise return 1096 * busy. We also take the scb from the pending list if the mailbox is 1097 * available. 1098 */ 1099 static int 1100 issue_scb(adapter_t *adapter, scb_t *scb) 1101 { 1102 volatile mbox64_t *mbox64 = adapter->mbox64; 1103 volatile mbox_t *mbox = adapter->mbox; 1104 unsigned int i = 0; 1105 1106 if(unlikely(mbox->m_in.busy)) { 1107 do { 1108 udelay(1); 1109 i++; 1110 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1111 1112 if(mbox->m_in.busy) return -1; 1113 } 1114 1115 /* Copy mailbox data into host structure */ 1116 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1117 sizeof(struct mbox_out)); 1118 1119 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1120 mbox->m_in.busy = 1; /* Set busy */ 1121 1122 1123 /* 1124 * Increment the pending queue counter 1125 */ 1126 atomic_inc(&adapter->pend_cmds); 1127 1128 switch (mbox->m_out.cmd) { 1129 case MEGA_MBOXCMD_LREAD64: 1130 case MEGA_MBOXCMD_LWRITE64: 1131 case MEGA_MBOXCMD_PASSTHRU64: 1132 case MEGA_MBOXCMD_EXTPTHRU: 1133 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1134 mbox64->xfer_segment_hi = 0; 1135 mbox->m_out.xferaddr = 0xFFFFFFFF; 1136 break; 1137 default: 1138 mbox64->xfer_segment_lo = 0; 1139 mbox64->xfer_segment_hi = 0; 1140 } 1141 1142 /* 1143 * post the command 1144 */ 1145 scb->state |= SCB_ISSUED; 1146 1147 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1148 mbox->m_in.poll = 0; 1149 mbox->m_in.ack = 0; 1150 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1151 } 1152 else { 1153 irq_enable(adapter); 1154 issue_command(adapter); 1155 } 1156 1157 return 0; 1158 } 1159 1160 /* 1161 * Wait until the controller's mailbox is available 1162 */ 1163 static inline int 1164 mega_busywait_mbox (adapter_t *adapter) 1165 { 1166 if (adapter->mbox->m_in.busy) 1167 return __mega_busywait_mbox(adapter); 1168 return 0; 1169 } 1170 1171 /** 1172 * issue_scb_block() 1173 * @adapter - pointer to our soft state 1174 * @raw_mbox - the mailbox 1175 * 1176 * Issue a scb in synchronous and non-interrupt mode 1177 */ 1178 static int 1179 issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1180 { 1181 volatile mbox64_t *mbox64 = adapter->mbox64; 1182 volatile mbox_t *mbox = adapter->mbox; 1183 u8 byte; 1184 1185 /* Wait until mailbox is free */ 1186 if(mega_busywait_mbox (adapter)) 1187 goto bug_blocked_mailbox; 1188 1189 /* Copy mailbox data into host structure */ 1190 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1191 mbox->m_out.cmdid = 0xFE; 1192 mbox->m_in.busy = 1; 1193 1194 switch (raw_mbox[0]) { 1195 case MEGA_MBOXCMD_LREAD64: 1196 case MEGA_MBOXCMD_LWRITE64: 1197 case MEGA_MBOXCMD_PASSTHRU64: 1198 case MEGA_MBOXCMD_EXTPTHRU: 1199 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1200 mbox64->xfer_segment_hi = 0; 1201 mbox->m_out.xferaddr = 0xFFFFFFFF; 1202 break; 1203 default: 1204 mbox64->xfer_segment_lo = 0; 1205 mbox64->xfer_segment_hi = 0; 1206 } 1207 1208 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1209 mbox->m_in.poll = 0; 1210 mbox->m_in.ack = 0; 1211 mbox->m_in.numstatus = 0xFF; 1212 mbox->m_in.status = 0xFF; 1213 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1214 1215 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1216 cpu_relax(); 1217 1218 mbox->m_in.numstatus = 0xFF; 1219 1220 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1221 cpu_relax(); 1222 1223 mbox->m_in.poll = 0; 1224 mbox->m_in.ack = 0x77; 1225 1226 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1227 1228 while(RDINDOOR(adapter) & 0x2) 1229 cpu_relax(); 1230 } 1231 else { 1232 irq_disable(adapter); 1233 issue_command(adapter); 1234 1235 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1236 cpu_relax(); 1237 1238 set_irq_state(adapter, byte); 1239 irq_enable(adapter); 1240 irq_ack(adapter); 1241 } 1242 1243 return mbox->m_in.status; 1244 1245 bug_blocked_mailbox: 1246 dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n"); 1247 udelay (1000); 1248 return -1; 1249 } 1250 1251 1252 /** 1253 * megaraid_isr_iomapped() 1254 * @irq - irq 1255 * @devp - pointer to our soft state 1256 * 1257 * Interrupt service routine for io-mapped controllers. 1258 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1259 * and service the completed commands. 1260 */ 1261 static irqreturn_t 1262 megaraid_isr_iomapped(int irq, void *devp) 1263 { 1264 adapter_t *adapter = devp; 1265 unsigned long flags; 1266 u8 status; 1267 u8 nstatus; 1268 u8 completed[MAX_FIRMWARE_STATUS]; 1269 u8 byte; 1270 int handled = 0; 1271 1272 1273 /* 1274 * loop till F/W has more commands for us to complete. 1275 */ 1276 spin_lock_irqsave(&adapter->lock, flags); 1277 1278 do { 1279 /* Check if a valid interrupt is pending */ 1280 byte = irq_state(adapter); 1281 if( (byte & VALID_INTR_BYTE) == 0 ) { 1282 /* 1283 * No more pending commands 1284 */ 1285 goto out_unlock; 1286 } 1287 set_irq_state(adapter, byte); 1288 1289 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1290 == 0xFF) 1291 cpu_relax(); 1292 adapter->mbox->m_in.numstatus = 0xFF; 1293 1294 status = adapter->mbox->m_in.status; 1295 1296 /* 1297 * decrement the pending queue counter 1298 */ 1299 atomic_sub(nstatus, &adapter->pend_cmds); 1300 1301 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1302 nstatus); 1303 1304 /* Acknowledge interrupt */ 1305 irq_ack(adapter); 1306 1307 mega_cmd_done(adapter, completed, nstatus, status); 1308 1309 mega_rundoneq(adapter); 1310 1311 handled = 1; 1312 1313 /* Loop through any pending requests */ 1314 if(atomic_read(&adapter->quiescent) == 0) { 1315 mega_runpendq(adapter); 1316 } 1317 1318 } while(1); 1319 1320 out_unlock: 1321 1322 spin_unlock_irqrestore(&adapter->lock, flags); 1323 1324 return IRQ_RETVAL(handled); 1325 } 1326 1327 1328 /** 1329 * megaraid_isr_memmapped() 1330 * @irq - irq 1331 * @devp - pointer to our soft state 1332 * 1333 * Interrupt service routine for memory-mapped controllers. 1334 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1335 * and service the completed commands. 1336 */ 1337 static irqreturn_t 1338 megaraid_isr_memmapped(int irq, void *devp) 1339 { 1340 adapter_t *adapter = devp; 1341 unsigned long flags; 1342 u8 status; 1343 u32 dword = 0; 1344 u8 nstatus; 1345 u8 completed[MAX_FIRMWARE_STATUS]; 1346 int handled = 0; 1347 1348 1349 /* 1350 * loop till F/W has more commands for us to complete. 1351 */ 1352 spin_lock_irqsave(&adapter->lock, flags); 1353 1354 do { 1355 /* Check if a valid interrupt is pending */ 1356 dword = RDOUTDOOR(adapter); 1357 if(dword != 0x10001234) { 1358 /* 1359 * No more pending commands 1360 */ 1361 goto out_unlock; 1362 } 1363 WROUTDOOR(adapter, 0x10001234); 1364 1365 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1366 == 0xFF) { 1367 cpu_relax(); 1368 } 1369 adapter->mbox->m_in.numstatus = 0xFF; 1370 1371 status = adapter->mbox->m_in.status; 1372 1373 /* 1374 * decrement the pending queue counter 1375 */ 1376 atomic_sub(nstatus, &adapter->pend_cmds); 1377 1378 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1379 nstatus); 1380 1381 /* Acknowledge interrupt */ 1382 WRINDOOR(adapter, 0x2); 1383 1384 handled = 1; 1385 1386 while( RDINDOOR(adapter) & 0x02 ) 1387 cpu_relax(); 1388 1389 mega_cmd_done(adapter, completed, nstatus, status); 1390 1391 mega_rundoneq(adapter); 1392 1393 /* Loop through any pending requests */ 1394 if(atomic_read(&adapter->quiescent) == 0) { 1395 mega_runpendq(adapter); 1396 } 1397 1398 } while(1); 1399 1400 out_unlock: 1401 1402 spin_unlock_irqrestore(&adapter->lock, flags); 1403 1404 return IRQ_RETVAL(handled); 1405 } 1406 /** 1407 * mega_cmd_done() 1408 * @adapter - pointer to our soft state 1409 * @completed - array of ids of completed commands 1410 * @nstatus - number of completed commands 1411 * @status - status of the last command completed 1412 * 1413 * Complete the commands and call the scsi mid-layer callback hooks. 1414 */ 1415 static void 1416 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1417 { 1418 mega_ext_passthru *epthru = NULL; 1419 struct scatterlist *sgl; 1420 Scsi_Cmnd *cmd = NULL; 1421 mega_passthru *pthru = NULL; 1422 mbox_t *mbox = NULL; 1423 u8 c; 1424 scb_t *scb; 1425 int islogical; 1426 int cmdid; 1427 int i; 1428 1429 /* 1430 * for all the commands completed, call the mid-layer callback routine 1431 * and free the scb. 1432 */ 1433 for( i = 0; i < nstatus; i++ ) { 1434 1435 cmdid = completed[i]; 1436 1437 /* 1438 * Only free SCBs for the commands coming down from the 1439 * mid-layer, not for which were issued internally 1440 * 1441 * For internal command, restore the status returned by the 1442 * firmware so that user can interpret it. 1443 */ 1444 if (cmdid == CMDID_INT_CMDS) { 1445 scb = &adapter->int_scb; 1446 1447 list_del_init(&scb->list); 1448 scb->state = SCB_FREE; 1449 1450 adapter->int_status = status; 1451 complete(&adapter->int_waitq); 1452 } else { 1453 scb = &adapter->scb_list[cmdid]; 1454 1455 /* 1456 * Make sure f/w has completed a valid command 1457 */ 1458 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1459 dev_crit(&adapter->dev->dev, "invalid command " 1460 "Id %d, scb->state:%x, scsi cmd:%p\n", 1461 cmdid, scb->state, scb->cmd); 1462 1463 continue; 1464 } 1465 1466 /* 1467 * Was a abort issued for this command 1468 */ 1469 if( scb->state & SCB_ABORT ) { 1470 1471 dev_warn(&adapter->dev->dev, 1472 "aborted cmd [%x] complete\n", 1473 scb->idx); 1474 1475 scb->cmd->result = (DID_ABORT << 16); 1476 1477 list_add_tail(SCSI_LIST(scb->cmd), 1478 &adapter->completed_list); 1479 1480 mega_free_scb(adapter, scb); 1481 1482 continue; 1483 } 1484 1485 /* 1486 * Was a reset issued for this command 1487 */ 1488 if( scb->state & SCB_RESET ) { 1489 1490 dev_warn(&adapter->dev->dev, 1491 "reset cmd [%x] complete\n", 1492 scb->idx); 1493 1494 scb->cmd->result = (DID_RESET << 16); 1495 1496 list_add_tail(SCSI_LIST(scb->cmd), 1497 &adapter->completed_list); 1498 1499 mega_free_scb (adapter, scb); 1500 1501 continue; 1502 } 1503 1504 cmd = scb->cmd; 1505 pthru = scb->pthru; 1506 epthru = scb->epthru; 1507 mbox = (mbox_t *)scb->raw_mbox; 1508 1509 #if MEGA_HAVE_STATS 1510 { 1511 1512 int logdrv = mbox->m_out.logdrv; 1513 1514 islogical = adapter->logdrv_chan[cmd->channel]; 1515 /* 1516 * Maintain an error counter for the logical drive. 1517 * Some application like SNMP agent need such 1518 * statistics 1519 */ 1520 if( status && islogical && (cmd->cmnd[0] == READ_6 || 1521 cmd->cmnd[0] == READ_10 || 1522 cmd->cmnd[0] == READ_12)) { 1523 /* 1524 * Logical drive number increases by 0x80 when 1525 * a logical drive is deleted 1526 */ 1527 adapter->rd_errors[logdrv%0x80]++; 1528 } 1529 1530 if( status && islogical && (cmd->cmnd[0] == WRITE_6 || 1531 cmd->cmnd[0] == WRITE_10 || 1532 cmd->cmnd[0] == WRITE_12)) { 1533 /* 1534 * Logical drive number increases by 0x80 when 1535 * a logical drive is deleted 1536 */ 1537 adapter->wr_errors[logdrv%0x80]++; 1538 } 1539 1540 } 1541 #endif 1542 } 1543 1544 /* 1545 * Do not return the presence of hard disk on the channel so, 1546 * inquiry sent, and returned data==hard disk or removable 1547 * hard disk and not logical, request should return failure! - 1548 * PJ 1549 */ 1550 islogical = adapter->logdrv_chan[cmd->device->channel]; 1551 if( cmd->cmnd[0] == INQUIRY && !islogical ) { 1552 1553 sgl = scsi_sglist(cmd); 1554 if( sg_page(sgl) ) { 1555 c = *(unsigned char *) sg_virt(&sgl[0]); 1556 } else { 1557 dev_warn(&adapter->dev->dev, "invalid sg\n"); 1558 c = 0; 1559 } 1560 1561 if(IS_RAID_CH(adapter, cmd->device->channel) && 1562 ((c & 0x1F ) == TYPE_DISK)) { 1563 status = 0xF0; 1564 } 1565 } 1566 1567 /* clear result; otherwise, success returns corrupt value */ 1568 cmd->result = 0; 1569 1570 /* Convert MegaRAID status to Linux error code */ 1571 switch (status) { 1572 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1573 cmd->result |= (DID_OK << 16); 1574 break; 1575 1576 case 0x02: /* ERROR_ABORTED, i.e. 1577 SCSI_STATUS_CHECK_CONDITION */ 1578 1579 /* set sense_buffer and result fields */ 1580 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1581 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1582 1583 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1584 14); 1585 1586 cmd->result = (DRIVER_SENSE << 24) | 1587 (DID_OK << 16) | 1588 (CHECK_CONDITION << 1); 1589 } 1590 else { 1591 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1592 1593 memcpy(cmd->sense_buffer, 1594 epthru->reqsensearea, 14); 1595 1596 cmd->result = (DRIVER_SENSE << 24) | 1597 (DID_OK << 16) | 1598 (CHECK_CONDITION << 1); 1599 } else { 1600 cmd->sense_buffer[0] = 0x70; 1601 cmd->sense_buffer[2] = ABORTED_COMMAND; 1602 cmd->result |= (CHECK_CONDITION << 1); 1603 } 1604 } 1605 break; 1606 1607 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1608 SCSI_STATUS_BUSY */ 1609 cmd->result |= (DID_BUS_BUSY << 16) | status; 1610 break; 1611 1612 default: 1613 #if MEGA_HAVE_CLUSTERING 1614 /* 1615 * If TEST_UNIT_READY fails, we know 1616 * MEGA_RESERVATION_STATUS failed 1617 */ 1618 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1619 cmd->result |= (DID_ERROR << 16) | 1620 (RESERVATION_CONFLICT << 1); 1621 } 1622 else 1623 /* 1624 * Error code returned is 1 if Reserve or Release 1625 * failed or the input parameter is invalid 1626 */ 1627 if( status == 1 && 1628 (cmd->cmnd[0] == RESERVE || 1629 cmd->cmnd[0] == RELEASE) ) { 1630 1631 cmd->result |= (DID_ERROR << 16) | 1632 (RESERVATION_CONFLICT << 1); 1633 } 1634 else 1635 #endif 1636 cmd->result |= (DID_BAD_TARGET << 16)|status; 1637 } 1638 1639 mega_free_scb(adapter, scb); 1640 1641 /* Add Scsi_Command to end of completed queue */ 1642 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1643 } 1644 } 1645 1646 1647 /* 1648 * mega_runpendq() 1649 * 1650 * Run through the list of completed requests and finish it 1651 */ 1652 static void 1653 mega_rundoneq (adapter_t *adapter) 1654 { 1655 Scsi_Cmnd *cmd; 1656 struct list_head *pos; 1657 1658 list_for_each(pos, &adapter->completed_list) { 1659 1660 struct scsi_pointer* spos = (struct scsi_pointer *)pos; 1661 1662 cmd = list_entry(spos, Scsi_Cmnd, SCp); 1663 cmd->scsi_done(cmd); 1664 } 1665 1666 INIT_LIST_HEAD(&adapter->completed_list); 1667 } 1668 1669 1670 /* 1671 * Free a SCB structure 1672 * Note: We assume the scsi commands associated with this scb is not free yet. 1673 */ 1674 static void 1675 mega_free_scb(adapter_t *adapter, scb_t *scb) 1676 { 1677 switch( scb->dma_type ) { 1678 1679 case MEGA_DMA_TYPE_NONE: 1680 break; 1681 1682 case MEGA_SGLIST: 1683 scsi_dma_unmap(scb->cmd); 1684 break; 1685 default: 1686 break; 1687 } 1688 1689 /* 1690 * Remove from the pending list 1691 */ 1692 list_del_init(&scb->list); 1693 1694 /* Link the scb back into free list */ 1695 scb->state = SCB_FREE; 1696 scb->cmd = NULL; 1697 1698 list_add(&scb->list, &adapter->free_list); 1699 } 1700 1701 1702 static int 1703 __mega_busywait_mbox (adapter_t *adapter) 1704 { 1705 volatile mbox_t *mbox = adapter->mbox; 1706 long counter; 1707 1708 for (counter = 0; counter < 10000; counter++) { 1709 if (!mbox->m_in.busy) 1710 return 0; 1711 udelay(100); 1712 cond_resched(); 1713 } 1714 return -1; /* give up after 1 second */ 1715 } 1716 1717 /* 1718 * Copies data to SGLIST 1719 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1720 */ 1721 static int 1722 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1723 { 1724 struct scatterlist *sg; 1725 Scsi_Cmnd *cmd; 1726 int sgcnt; 1727 int idx; 1728 1729 cmd = scb->cmd; 1730 1731 /* 1732 * Copy Scatter-Gather list info into controller structure. 1733 * 1734 * The number of sg elements returned must not exceed our limit 1735 */ 1736 sgcnt = scsi_dma_map(cmd); 1737 1738 scb->dma_type = MEGA_SGLIST; 1739 1740 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0); 1741 1742 *len = 0; 1743 1744 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { 1745 sg = scsi_sglist(cmd); 1746 scb->dma_h_bulkdata = sg_dma_address(sg); 1747 *buf = (u32)scb->dma_h_bulkdata; 1748 *len = sg_dma_len(sg); 1749 return 0; 1750 } 1751 1752 scsi_for_each_sg(cmd, sg, sgcnt, idx) { 1753 if (adapter->has_64bit_addr) { 1754 scb->sgl64[idx].address = sg_dma_address(sg); 1755 *len += scb->sgl64[idx].length = sg_dma_len(sg); 1756 } else { 1757 scb->sgl[idx].address = sg_dma_address(sg); 1758 *len += scb->sgl[idx].length = sg_dma_len(sg); 1759 } 1760 } 1761 1762 /* Reset pointer and length fields */ 1763 *buf = scb->sgl_dma_addr; 1764 1765 /* Return count of SG requests */ 1766 return sgcnt; 1767 } 1768 1769 1770 /* 1771 * mega_8_to_40ld() 1772 * 1773 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1774 * Enquiry3 structures for later use 1775 */ 1776 static void 1777 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1778 mega_product_info *product_info) 1779 { 1780 int i; 1781 1782 product_info->max_commands = inquiry->adapter_info.max_commands; 1783 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1784 product_info->nchannels = inquiry->adapter_info.nchannels; 1785 1786 for (i = 0; i < 4; i++) { 1787 product_info->fw_version[i] = 1788 inquiry->adapter_info.fw_version[i]; 1789 1790 product_info->bios_version[i] = 1791 inquiry->adapter_info.bios_version[i]; 1792 } 1793 enquiry3->cache_flush_interval = 1794 inquiry->adapter_info.cache_flush_interval; 1795 1796 product_info->dram_size = inquiry->adapter_info.dram_size; 1797 1798 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1799 1800 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1801 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1802 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1803 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1804 } 1805 1806 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1807 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1808 } 1809 1810 static inline void 1811 mega_free_sgl(adapter_t *adapter) 1812 { 1813 scb_t *scb; 1814 int i; 1815 1816 for(i = 0; i < adapter->max_cmds; i++) { 1817 1818 scb = &adapter->scb_list[i]; 1819 1820 if( scb->sgl64 ) { 1821 pci_free_consistent(adapter->dev, 1822 sizeof(mega_sgl64) * adapter->sglen, 1823 scb->sgl64, 1824 scb->sgl_dma_addr); 1825 1826 scb->sgl64 = NULL; 1827 } 1828 1829 if( scb->pthru ) { 1830 pci_free_consistent(adapter->dev, sizeof(mega_passthru), 1831 scb->pthru, scb->pthru_dma_addr); 1832 1833 scb->pthru = NULL; 1834 } 1835 1836 if( scb->epthru ) { 1837 pci_free_consistent(adapter->dev, 1838 sizeof(mega_ext_passthru), 1839 scb->epthru, scb->epthru_dma_addr); 1840 1841 scb->epthru = NULL; 1842 } 1843 1844 } 1845 } 1846 1847 1848 /* 1849 * Get information about the card/driver 1850 */ 1851 const char * 1852 megaraid_info(struct Scsi_Host *host) 1853 { 1854 static char buffer[512]; 1855 adapter_t *adapter; 1856 1857 adapter = (adapter_t *)host->hostdata; 1858 1859 sprintf (buffer, 1860 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1861 adapter->fw_version, adapter->product_info.max_commands, 1862 adapter->host->max_id, adapter->host->max_channel, 1863 (u32)adapter->host->max_lun); 1864 return buffer; 1865 } 1866 1867 /* 1868 * Abort a previous SCSI request. Only commands on the pending list can be 1869 * aborted. All the commands issued to the F/W must complete. 1870 */ 1871 static int 1872 megaraid_abort(Scsi_Cmnd *cmd) 1873 { 1874 adapter_t *adapter; 1875 int rval; 1876 1877 adapter = (adapter_t *)cmd->device->host->hostdata; 1878 1879 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1880 1881 /* 1882 * This is required here to complete any completed requests 1883 * to be communicated over to the mid layer. 1884 */ 1885 mega_rundoneq(adapter); 1886 1887 return rval; 1888 } 1889 1890 1891 static int 1892 megaraid_reset(struct scsi_cmnd *cmd) 1893 { 1894 adapter_t *adapter; 1895 megacmd_t mc; 1896 int rval; 1897 1898 adapter = (adapter_t *)cmd->device->host->hostdata; 1899 1900 #if MEGA_HAVE_CLUSTERING 1901 mc.cmd = MEGA_CLUSTER_CMD; 1902 mc.opcode = MEGA_RESET_RESERVATIONS; 1903 1904 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1905 dev_warn(&adapter->dev->dev, "reservation reset failed\n"); 1906 } 1907 else { 1908 dev_info(&adapter->dev->dev, "reservation reset\n"); 1909 } 1910 #endif 1911 1912 spin_lock_irq(&adapter->lock); 1913 1914 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 1915 1916 /* 1917 * This is required here to complete any completed requests 1918 * to be communicated over to the mid layer. 1919 */ 1920 mega_rundoneq(adapter); 1921 spin_unlock_irq(&adapter->lock); 1922 1923 return rval; 1924 } 1925 1926 /** 1927 * megaraid_abort_and_reset() 1928 * @adapter - megaraid soft state 1929 * @cmd - scsi command to be aborted or reset 1930 * @aor - abort or reset flag 1931 * 1932 * Try to locate the scsi command in the pending queue. If found and is not 1933 * issued to the controller, abort/reset it. Otherwise return failure 1934 */ 1935 static int 1936 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor) 1937 { 1938 struct list_head *pos, *next; 1939 scb_t *scb; 1940 1941 dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n", 1942 (aor == SCB_ABORT)? "ABORTING":"RESET", 1943 cmd->cmnd[0], cmd->device->channel, 1944 cmd->device->id, (u32)cmd->device->lun); 1945 1946 if(list_empty(&adapter->pending_list)) 1947 return FAILED; 1948 1949 list_for_each_safe(pos, next, &adapter->pending_list) { 1950 1951 scb = list_entry(pos, scb_t, list); 1952 1953 if (scb->cmd == cmd) { /* Found command */ 1954 1955 scb->state |= aor; 1956 1957 /* 1958 * Check if this command has firmware ownership. If 1959 * yes, we cannot reset this command. Whenever f/w 1960 * completes this command, we will return appropriate 1961 * status from ISR. 1962 */ 1963 if( scb->state & SCB_ISSUED ) { 1964 1965 dev_warn(&adapter->dev->dev, 1966 "%s[%x], fw owner\n", 1967 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1968 scb->idx); 1969 1970 return FAILED; 1971 } 1972 else { 1973 1974 /* 1975 * Not yet issued! Remove from the pending 1976 * list 1977 */ 1978 dev_warn(&adapter->dev->dev, 1979 "%s-[%x], driver owner\n", 1980 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1981 scb->idx); 1982 1983 mega_free_scb(adapter, scb); 1984 1985 if( aor == SCB_ABORT ) { 1986 cmd->result = (DID_ABORT << 16); 1987 } 1988 else { 1989 cmd->result = (DID_RESET << 16); 1990 } 1991 1992 list_add_tail(SCSI_LIST(cmd), 1993 &adapter->completed_list); 1994 1995 return SUCCESS; 1996 } 1997 } 1998 } 1999 2000 return FAILED; 2001 } 2002 2003 static inline int 2004 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2005 { 2006 *pdev = pci_alloc_dev(NULL); 2007 2008 if( *pdev == NULL ) return -1; 2009 2010 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2011 2012 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) { 2013 kfree(*pdev); 2014 return -1; 2015 } 2016 2017 return 0; 2018 } 2019 2020 static inline void 2021 free_local_pdev(struct pci_dev *pdev) 2022 { 2023 kfree(pdev); 2024 } 2025 2026 /** 2027 * mega_allocate_inquiry() 2028 * @dma_handle - handle returned for dma address 2029 * @pdev - handle to pci device 2030 * 2031 * allocates memory for inquiry structure 2032 */ 2033 static inline void * 2034 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2035 { 2036 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2037 } 2038 2039 2040 static inline void 2041 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2042 { 2043 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2044 } 2045 2046 2047 #ifdef CONFIG_PROC_FS 2048 /* Following code handles /proc fs */ 2049 2050 /** 2051 * proc_show_config() 2052 * @m - Synthetic file construction data 2053 * @v - File iterator 2054 * 2055 * Display configuration information about the controller. 2056 */ 2057 static int 2058 proc_show_config(struct seq_file *m, void *v) 2059 { 2060 2061 adapter_t *adapter = m->private; 2062 2063 seq_puts(m, MEGARAID_VERSION); 2064 if(adapter->product_info.product_name[0]) 2065 seq_printf(m, "%s\n", adapter->product_info.product_name); 2066 2067 seq_puts(m, "Controller Type: "); 2068 2069 if( adapter->flag & BOARD_MEMMAP ) 2070 seq_puts(m, "438/466/467/471/493/518/520/531/532\n"); 2071 else 2072 seq_puts(m, "418/428/434\n"); 2073 2074 if(adapter->flag & BOARD_40LD) 2075 seq_puts(m, "Controller Supports 40 Logical Drives\n"); 2076 2077 if(adapter->flag & BOARD_64BIT) 2078 seq_puts(m, "Controller capable of 64-bit memory addressing\n"); 2079 if( adapter->has_64bit_addr ) 2080 seq_puts(m, "Controller using 64-bit memory addressing\n"); 2081 else 2082 seq_puts(m, "Controller is not using 64-bit memory addressing\n"); 2083 2084 seq_printf(m, "Base = %08lx, Irq = %d, ", 2085 adapter->base, adapter->host->irq); 2086 2087 seq_printf(m, "Logical Drives = %d, Channels = %d\n", 2088 adapter->numldrv, adapter->product_info.nchannels); 2089 2090 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n", 2091 adapter->fw_version, adapter->bios_version, 2092 adapter->product_info.dram_size); 2093 2094 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2095 adapter->product_info.max_commands, adapter->max_cmds); 2096 2097 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb); 2098 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del); 2099 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); 2100 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv); 2101 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); 2102 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); 2103 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); 2104 seq_printf(m, "quiescent = %d\n", 2105 atomic_read(&adapter->quiescent)); 2106 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster); 2107 2108 seq_puts(m, "\nModule Parameters:\n"); 2109 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun); 2110 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io); 2111 return 0; 2112 } 2113 2114 /** 2115 * proc_show_stat() 2116 * @m - Synthetic file construction data 2117 * @v - File iterator 2118 * 2119 * Display statistical information about the I/O activity. 2120 */ 2121 static int 2122 proc_show_stat(struct seq_file *m, void *v) 2123 { 2124 adapter_t *adapter = m->private; 2125 #if MEGA_HAVE_STATS 2126 int i; 2127 #endif 2128 2129 seq_puts(m, "Statistical Information for this controller\n"); 2130 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); 2131 #if MEGA_HAVE_STATS 2132 for(i = 0; i < adapter->numldrv; i++) { 2133 seq_printf(m, "Logical Drive %d:\n", i); 2134 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n", 2135 adapter->nreads[i], adapter->nwrites[i]); 2136 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n", 2137 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2138 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n", 2139 adapter->rd_errors[i], adapter->wr_errors[i]); 2140 } 2141 #else 2142 seq_puts(m, "IO and error counters not compiled in driver.\n"); 2143 #endif 2144 return 0; 2145 } 2146 2147 2148 /** 2149 * proc_show_mbox() 2150 * @m - Synthetic file construction data 2151 * @v - File iterator 2152 * 2153 * Display mailbox information for the last command issued. This information 2154 * is good for debugging. 2155 */ 2156 static int 2157 proc_show_mbox(struct seq_file *m, void *v) 2158 { 2159 adapter_t *adapter = m->private; 2160 volatile mbox_t *mbox = adapter->mbox; 2161 2162 seq_puts(m, "Contents of Mail Box Structure\n"); 2163 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd); 2164 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid); 2165 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors); 2166 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba); 2167 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr); 2168 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv); 2169 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements); 2170 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy); 2171 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status); 2172 return 0; 2173 } 2174 2175 2176 /** 2177 * proc_show_rebuild_rate() 2178 * @m - Synthetic file construction data 2179 * @v - File iterator 2180 * 2181 * Display current rebuild rate 2182 */ 2183 static int 2184 proc_show_rebuild_rate(struct seq_file *m, void *v) 2185 { 2186 adapter_t *adapter = m->private; 2187 dma_addr_t dma_handle; 2188 caddr_t inquiry; 2189 struct pci_dev *pdev; 2190 2191 if( make_local_pdev(adapter, &pdev) != 0 ) 2192 return 0; 2193 2194 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2195 goto free_pdev; 2196 2197 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2198 seq_puts(m, "Adapter inquiry failed.\n"); 2199 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2200 goto free_inquiry; 2201 } 2202 2203 if( adapter->flag & BOARD_40LD ) 2204 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2205 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2206 else 2207 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2208 ((mraid_ext_inquiry *) 2209 inquiry)->raid_inq.adapter_info.rebuild_rate); 2210 2211 free_inquiry: 2212 mega_free_inquiry(inquiry, dma_handle, pdev); 2213 free_pdev: 2214 free_local_pdev(pdev); 2215 return 0; 2216 } 2217 2218 2219 /** 2220 * proc_show_battery() 2221 * @m - Synthetic file construction data 2222 * @v - File iterator 2223 * 2224 * Display information about the battery module on the controller. 2225 */ 2226 static int 2227 proc_show_battery(struct seq_file *m, void *v) 2228 { 2229 adapter_t *adapter = m->private; 2230 dma_addr_t dma_handle; 2231 caddr_t inquiry; 2232 struct pci_dev *pdev; 2233 u8 battery_status; 2234 2235 if( make_local_pdev(adapter, &pdev) != 0 ) 2236 return 0; 2237 2238 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2239 goto free_pdev; 2240 2241 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2242 seq_puts(m, "Adapter inquiry failed.\n"); 2243 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2244 goto free_inquiry; 2245 } 2246 2247 if( adapter->flag & BOARD_40LD ) { 2248 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2249 } 2250 else { 2251 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2252 raid_inq.adapter_info.battery_status; 2253 } 2254 2255 /* 2256 * Decode the battery status 2257 */ 2258 seq_printf(m, "Battery Status:[%d]", battery_status); 2259 2260 if(battery_status == MEGA_BATT_CHARGE_DONE) 2261 seq_puts(m, " Charge Done"); 2262 2263 if(battery_status & MEGA_BATT_MODULE_MISSING) 2264 seq_puts(m, " Module Missing"); 2265 2266 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2267 seq_puts(m, " Low Voltage"); 2268 2269 if(battery_status & MEGA_BATT_TEMP_HIGH) 2270 seq_puts(m, " Temperature High"); 2271 2272 if(battery_status & MEGA_BATT_PACK_MISSING) 2273 seq_puts(m, " Pack Missing"); 2274 2275 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2276 seq_puts(m, " Charge In-progress"); 2277 2278 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2279 seq_puts(m, " Charge Fail"); 2280 2281 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2282 seq_puts(m, " Cycles Exceeded"); 2283 2284 seq_putc(m, '\n'); 2285 2286 free_inquiry: 2287 mega_free_inquiry(inquiry, dma_handle, pdev); 2288 free_pdev: 2289 free_local_pdev(pdev); 2290 return 0; 2291 } 2292 2293 2294 /* 2295 * Display scsi inquiry 2296 */ 2297 static void 2298 mega_print_inquiry(struct seq_file *m, char *scsi_inq) 2299 { 2300 int i; 2301 2302 seq_puts(m, " Vendor: "); 2303 seq_write(m, scsi_inq + 8, 8); 2304 seq_puts(m, " Model: "); 2305 seq_write(m, scsi_inq + 16, 16); 2306 seq_puts(m, " Rev: "); 2307 seq_write(m, scsi_inq + 32, 4); 2308 seq_putc(m, '\n'); 2309 2310 i = scsi_inq[0] & 0x1f; 2311 seq_printf(m, " Type: %s ", scsi_device_type(i)); 2312 2313 seq_printf(m, " ANSI SCSI revision: %02x", 2314 scsi_inq[2] & 0x07); 2315 2316 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2317 seq_puts(m, " CCS\n"); 2318 else 2319 seq_putc(m, '\n'); 2320 } 2321 2322 /** 2323 * proc_show_pdrv() 2324 * @m - Synthetic file construction data 2325 * @page - buffer to write the data in 2326 * @adapter - pointer to our soft state 2327 * 2328 * Display information about the physical drives. 2329 */ 2330 static int 2331 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel) 2332 { 2333 dma_addr_t dma_handle; 2334 char *scsi_inq; 2335 dma_addr_t scsi_inq_dma_handle; 2336 caddr_t inquiry; 2337 struct pci_dev *pdev; 2338 u8 *pdrv_state; 2339 u8 state; 2340 int tgt; 2341 int max_channels; 2342 int i; 2343 2344 if( make_local_pdev(adapter, &pdev) != 0 ) 2345 return 0; 2346 2347 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2348 goto free_pdev; 2349 2350 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2351 seq_puts(m, "Adapter inquiry failed.\n"); 2352 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2353 goto free_inquiry; 2354 } 2355 2356 2357 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2358 if( scsi_inq == NULL ) { 2359 seq_puts(m, "memory not available for scsi inq.\n"); 2360 goto free_inquiry; 2361 } 2362 2363 if( adapter->flag & BOARD_40LD ) { 2364 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2365 } 2366 else { 2367 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2368 raid_inq.pdrv_info.pdrv_state; 2369 } 2370 2371 max_channels = adapter->product_info.nchannels; 2372 2373 if( channel >= max_channels ) { 2374 goto free_pci; 2375 } 2376 2377 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2378 2379 i = channel*16 + tgt; 2380 2381 state = *(pdrv_state + i); 2382 switch( state & 0x0F ) { 2383 case PDRV_ONLINE: 2384 seq_printf(m, "Channel:%2d Id:%2d State: Online", 2385 channel, tgt); 2386 break; 2387 2388 case PDRV_FAILED: 2389 seq_printf(m, "Channel:%2d Id:%2d State: Failed", 2390 channel, tgt); 2391 break; 2392 2393 case PDRV_RBLD: 2394 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild", 2395 channel, tgt); 2396 break; 2397 2398 case PDRV_HOTSPARE: 2399 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare", 2400 channel, tgt); 2401 break; 2402 2403 default: 2404 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured", 2405 channel, tgt); 2406 break; 2407 } 2408 2409 /* 2410 * This interface displays inquiries for disk drives 2411 * only. Inquries for logical drives and non-disk 2412 * devices are available through /proc/scsi/scsi 2413 */ 2414 memset(scsi_inq, 0, 256); 2415 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2416 scsi_inq_dma_handle) || 2417 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2418 continue; 2419 } 2420 2421 /* 2422 * Check for overflow. We print less than 240 2423 * characters for inquiry 2424 */ 2425 seq_puts(m, ".\n"); 2426 mega_print_inquiry(m, scsi_inq); 2427 } 2428 2429 free_pci: 2430 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2431 free_inquiry: 2432 mega_free_inquiry(inquiry, dma_handle, pdev); 2433 free_pdev: 2434 free_local_pdev(pdev); 2435 return 0; 2436 } 2437 2438 /** 2439 * proc_show_pdrv_ch0() 2440 * @m - Synthetic file construction data 2441 * @v - File iterator 2442 * 2443 * Display information about the physical drives on physical channel 0. 2444 */ 2445 static int 2446 proc_show_pdrv_ch0(struct seq_file *m, void *v) 2447 { 2448 return proc_show_pdrv(m, m->private, 0); 2449 } 2450 2451 2452 /** 2453 * proc_show_pdrv_ch1() 2454 * @m - Synthetic file construction data 2455 * @v - File iterator 2456 * 2457 * Display information about the physical drives on physical channel 1. 2458 */ 2459 static int 2460 proc_show_pdrv_ch1(struct seq_file *m, void *v) 2461 { 2462 return proc_show_pdrv(m, m->private, 1); 2463 } 2464 2465 2466 /** 2467 * proc_show_pdrv_ch2() 2468 * @m - Synthetic file construction data 2469 * @v - File iterator 2470 * 2471 * Display information about the physical drives on physical channel 2. 2472 */ 2473 static int 2474 proc_show_pdrv_ch2(struct seq_file *m, void *v) 2475 { 2476 return proc_show_pdrv(m, m->private, 2); 2477 } 2478 2479 2480 /** 2481 * proc_show_pdrv_ch3() 2482 * @m - Synthetic file construction data 2483 * @v - File iterator 2484 * 2485 * Display information about the physical drives on physical channel 3. 2486 */ 2487 static int 2488 proc_show_pdrv_ch3(struct seq_file *m, void *v) 2489 { 2490 return proc_show_pdrv(m, m->private, 3); 2491 } 2492 2493 2494 /** 2495 * proc_show_rdrv() 2496 * @m - Synthetic file construction data 2497 * @adapter - pointer to our soft state 2498 * @start - starting logical drive to display 2499 * @end - ending logical drive to display 2500 * 2501 * We do not print the inquiry information since its already available through 2502 * /proc/scsi/scsi interface 2503 */ 2504 static int 2505 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end ) 2506 { 2507 dma_addr_t dma_handle; 2508 logdrv_param *lparam; 2509 megacmd_t mc; 2510 char *disk_array; 2511 dma_addr_t disk_array_dma_handle; 2512 caddr_t inquiry; 2513 struct pci_dev *pdev; 2514 u8 *rdrv_state; 2515 int num_ldrv; 2516 u32 array_sz; 2517 int i; 2518 2519 if( make_local_pdev(adapter, &pdev) != 0 ) 2520 return 0; 2521 2522 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2523 goto free_pdev; 2524 2525 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2526 seq_puts(m, "Adapter inquiry failed.\n"); 2527 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2528 goto free_inquiry; 2529 } 2530 2531 memset(&mc, 0, sizeof(megacmd_t)); 2532 2533 if( adapter->flag & BOARD_40LD ) { 2534 array_sz = sizeof(disk_array_40ld); 2535 2536 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2537 2538 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2539 } 2540 else { 2541 array_sz = sizeof(disk_array_8ld); 2542 2543 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2544 raid_inq.logdrv_info.ldrv_state; 2545 2546 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2547 raid_inq.logdrv_info.num_ldrv; 2548 } 2549 2550 disk_array = pci_alloc_consistent(pdev, array_sz, 2551 &disk_array_dma_handle); 2552 2553 if( disk_array == NULL ) { 2554 seq_puts(m, "memory not available.\n"); 2555 goto free_inquiry; 2556 } 2557 2558 mc.xferaddr = (u32)disk_array_dma_handle; 2559 2560 if( adapter->flag & BOARD_40LD ) { 2561 mc.cmd = FC_NEW_CONFIG; 2562 mc.opcode = OP_DCMD_READ_CONFIG; 2563 2564 if( mega_internal_command(adapter, &mc, NULL) ) { 2565 seq_puts(m, "40LD read config failed.\n"); 2566 goto free_pci; 2567 } 2568 2569 } 2570 else { 2571 mc.cmd = NEW_READ_CONFIG_8LD; 2572 2573 if( mega_internal_command(adapter, &mc, NULL) ) { 2574 mc.cmd = READ_CONFIG_8LD; 2575 if( mega_internal_command(adapter, &mc, NULL) ) { 2576 seq_puts(m, "8LD read config failed.\n"); 2577 goto free_pci; 2578 } 2579 } 2580 } 2581 2582 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 2583 2584 if( adapter->flag & BOARD_40LD ) { 2585 lparam = 2586 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 2587 } 2588 else { 2589 lparam = 2590 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 2591 } 2592 2593 /* 2594 * Check for overflow. We print less than 240 characters for 2595 * information about each logical drive. 2596 */ 2597 seq_printf(m, "Logical drive:%2d:, ", i); 2598 2599 switch( rdrv_state[i] & 0x0F ) { 2600 case RDRV_OFFLINE: 2601 seq_puts(m, "state: offline"); 2602 break; 2603 case RDRV_DEGRADED: 2604 seq_puts(m, "state: degraded"); 2605 break; 2606 case RDRV_OPTIMAL: 2607 seq_puts(m, "state: optimal"); 2608 break; 2609 case RDRV_DELETED: 2610 seq_puts(m, "state: deleted"); 2611 break; 2612 default: 2613 seq_puts(m, "state: unknown"); 2614 break; 2615 } 2616 2617 /* 2618 * Check if check consistency or initialization is going on 2619 * for this logical drive. 2620 */ 2621 if( (rdrv_state[i] & 0xF0) == 0x20 ) 2622 seq_puts(m, ", check-consistency in progress"); 2623 else if( (rdrv_state[i] & 0xF0) == 0x10 ) 2624 seq_puts(m, ", initialization in progress"); 2625 2626 seq_putc(m, '\n'); 2627 2628 seq_printf(m, "Span depth:%3d, ", lparam->span_depth); 2629 seq_printf(m, "RAID level:%3d, ", lparam->level); 2630 seq_printf(m, "Stripe size:%3d, ", 2631 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 2632 seq_printf(m, "Row size:%3d\n", lparam->row_size); 2633 2634 seq_puts(m, "Read Policy: "); 2635 switch(lparam->read_ahead) { 2636 case NO_READ_AHEAD: 2637 seq_puts(m, "No read ahead, "); 2638 break; 2639 case READ_AHEAD: 2640 seq_puts(m, "Read ahead, "); 2641 break; 2642 case ADAP_READ_AHEAD: 2643 seq_puts(m, "Adaptive, "); 2644 break; 2645 2646 } 2647 2648 seq_puts(m, "Write Policy: "); 2649 switch(lparam->write_mode) { 2650 case WRMODE_WRITE_THRU: 2651 seq_puts(m, "Write thru, "); 2652 break; 2653 case WRMODE_WRITE_BACK: 2654 seq_puts(m, "Write back, "); 2655 break; 2656 } 2657 2658 seq_puts(m, "Cache Policy: "); 2659 switch(lparam->direct_io) { 2660 case CACHED_IO: 2661 seq_puts(m, "Cached IO\n\n"); 2662 break; 2663 case DIRECT_IO: 2664 seq_puts(m, "Direct IO\n\n"); 2665 break; 2666 } 2667 } 2668 2669 free_pci: 2670 pci_free_consistent(pdev, array_sz, disk_array, 2671 disk_array_dma_handle); 2672 free_inquiry: 2673 mega_free_inquiry(inquiry, dma_handle, pdev); 2674 free_pdev: 2675 free_local_pdev(pdev); 2676 return 0; 2677 } 2678 2679 /** 2680 * proc_show_rdrv_10() 2681 * @m - Synthetic file construction data 2682 * @v - File iterator 2683 * 2684 * Display real time information about the logical drives 0 through 9. 2685 */ 2686 static int 2687 proc_show_rdrv_10(struct seq_file *m, void *v) 2688 { 2689 return proc_show_rdrv(m, m->private, 0, 9); 2690 } 2691 2692 2693 /** 2694 * proc_show_rdrv_20() 2695 * @m - Synthetic file construction data 2696 * @v - File iterator 2697 * 2698 * Display real time information about the logical drives 0 through 9. 2699 */ 2700 static int 2701 proc_show_rdrv_20(struct seq_file *m, void *v) 2702 { 2703 return proc_show_rdrv(m, m->private, 10, 19); 2704 } 2705 2706 2707 /** 2708 * proc_show_rdrv_30() 2709 * @m - Synthetic file construction data 2710 * @v - File iterator 2711 * 2712 * Display real time information about the logical drives 0 through 9. 2713 */ 2714 static int 2715 proc_show_rdrv_30(struct seq_file *m, void *v) 2716 { 2717 return proc_show_rdrv(m, m->private, 20, 29); 2718 } 2719 2720 2721 /** 2722 * proc_show_rdrv_40() 2723 * @m - Synthetic file construction data 2724 * @v - File iterator 2725 * 2726 * Display real time information about the logical drives 0 through 9. 2727 */ 2728 static int 2729 proc_show_rdrv_40(struct seq_file *m, void *v) 2730 { 2731 return proc_show_rdrv(m, m->private, 30, 39); 2732 } 2733 2734 2735 /* 2736 * seq_file wrappers for procfile show routines. 2737 */ 2738 static int mega_proc_open(struct inode *inode, struct file *file) 2739 { 2740 adapter_t *adapter = proc_get_parent_data(inode); 2741 int (*show)(struct seq_file *, void *) = PDE_DATA(inode); 2742 2743 return single_open(file, show, adapter); 2744 } 2745 2746 static const struct file_operations mega_proc_fops = { 2747 .open = mega_proc_open, 2748 .read = seq_read, 2749 .llseek = seq_lseek, 2750 .release = single_release, 2751 }; 2752 2753 /* 2754 * Table of proc files we need to create. 2755 */ 2756 struct mega_proc_file { 2757 const char *name; 2758 unsigned short ptr_offset; 2759 int (*show) (struct seq_file *m, void *v); 2760 }; 2761 2762 static const struct mega_proc_file mega_proc_files[] = { 2763 { "config", offsetof(adapter_t, proc_read), proc_show_config }, 2764 { "stat", offsetof(adapter_t, proc_stat), proc_show_stat }, 2765 { "mailbox", offsetof(adapter_t, proc_mbox), proc_show_mbox }, 2766 #if MEGA_HAVE_ENH_PROC 2767 { "rebuild-rate", offsetof(adapter_t, proc_rr), proc_show_rebuild_rate }, 2768 { "battery-status", offsetof(adapter_t, proc_battery), proc_show_battery }, 2769 { "diskdrives-ch0", offsetof(adapter_t, proc_pdrvstat[0]), proc_show_pdrv_ch0 }, 2770 { "diskdrives-ch1", offsetof(adapter_t, proc_pdrvstat[1]), proc_show_pdrv_ch1 }, 2771 { "diskdrives-ch2", offsetof(adapter_t, proc_pdrvstat[2]), proc_show_pdrv_ch2 }, 2772 { "diskdrives-ch3", offsetof(adapter_t, proc_pdrvstat[3]), proc_show_pdrv_ch3 }, 2773 { "raiddrives-0-9", offsetof(adapter_t, proc_rdrvstat[0]), proc_show_rdrv_10 }, 2774 { "raiddrives-10-19", offsetof(adapter_t, proc_rdrvstat[1]), proc_show_rdrv_20 }, 2775 { "raiddrives-20-29", offsetof(adapter_t, proc_rdrvstat[2]), proc_show_rdrv_30 }, 2776 { "raiddrives-30-39", offsetof(adapter_t, proc_rdrvstat[3]), proc_show_rdrv_40 }, 2777 #endif 2778 { NULL } 2779 }; 2780 2781 /** 2782 * mega_create_proc_entry() 2783 * @index - index in soft state array 2784 * @parent - parent node for this /proc entry 2785 * 2786 * Creates /proc entries for our controllers. 2787 */ 2788 static void 2789 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2790 { 2791 const struct mega_proc_file *f; 2792 adapter_t *adapter = hba_soft_state[index]; 2793 struct proc_dir_entry *dir, *de, **ppde; 2794 u8 string[16]; 2795 2796 sprintf(string, "hba%d", adapter->host->host_no); 2797 2798 dir = adapter->controller_proc_dir_entry = 2799 proc_mkdir_data(string, 0, parent, adapter); 2800 if(!dir) { 2801 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n"); 2802 return; 2803 } 2804 2805 for (f = mega_proc_files; f->name; f++) { 2806 de = proc_create_data(f->name, S_IRUSR, dir, &mega_proc_fops, 2807 f->show); 2808 if (!de) { 2809 dev_warn(&adapter->dev->dev, "proc_create failed\n"); 2810 return; 2811 } 2812 2813 ppde = (void *)adapter + f->ptr_offset; 2814 *ppde = de; 2815 } 2816 } 2817 2818 #else 2819 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2820 { 2821 } 2822 #endif 2823 2824 2825 /** 2826 * megaraid_biosparam() 2827 * 2828 * Return the disk geometry for a particular disk 2829 */ 2830 static int 2831 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 2832 sector_t capacity, int geom[]) 2833 { 2834 adapter_t *adapter; 2835 unsigned char *bh; 2836 int heads; 2837 int sectors; 2838 int cylinders; 2839 int rval; 2840 2841 /* Get pointer to host config structure */ 2842 adapter = (adapter_t *)sdev->host->hostdata; 2843 2844 if (IS_RAID_CH(adapter, sdev->channel)) { 2845 /* Default heads (64) & sectors (32) */ 2846 heads = 64; 2847 sectors = 32; 2848 cylinders = (ulong)capacity / (heads * sectors); 2849 2850 /* 2851 * Handle extended translation size for logical drives 2852 * > 1Gb 2853 */ 2854 if ((ulong)capacity >= 0x200000) { 2855 heads = 255; 2856 sectors = 63; 2857 cylinders = (ulong)capacity / (heads * sectors); 2858 } 2859 2860 /* return result */ 2861 geom[0] = heads; 2862 geom[1] = sectors; 2863 geom[2] = cylinders; 2864 } 2865 else { 2866 bh = scsi_bios_ptable(bdev); 2867 2868 if( bh ) { 2869 rval = scsi_partsize(bh, capacity, 2870 &geom[2], &geom[0], &geom[1]); 2871 kfree(bh); 2872 if( rval != -1 ) 2873 return rval; 2874 } 2875 2876 dev_info(&adapter->dev->dev, 2877 "invalid partition on this disk on channel %d\n", 2878 sdev->channel); 2879 2880 /* Default heads (64) & sectors (32) */ 2881 heads = 64; 2882 sectors = 32; 2883 cylinders = (ulong)capacity / (heads * sectors); 2884 2885 /* Handle extended translation size for logical drives > 1Gb */ 2886 if ((ulong)capacity >= 0x200000) { 2887 heads = 255; 2888 sectors = 63; 2889 cylinders = (ulong)capacity / (heads * sectors); 2890 } 2891 2892 /* return result */ 2893 geom[0] = heads; 2894 geom[1] = sectors; 2895 geom[2] = cylinders; 2896 } 2897 2898 return 0; 2899 } 2900 2901 /** 2902 * mega_init_scb() 2903 * @adapter - pointer to our soft state 2904 * 2905 * Allocate memory for the various pointers in the scb structures: 2906 * scatter-gather list pointer, passthru and extended passthru structure 2907 * pointers. 2908 */ 2909 static int 2910 mega_init_scb(adapter_t *adapter) 2911 { 2912 scb_t *scb; 2913 int i; 2914 2915 for( i = 0; i < adapter->max_cmds; i++ ) { 2916 2917 scb = &adapter->scb_list[i]; 2918 2919 scb->sgl64 = NULL; 2920 scb->sgl = NULL; 2921 scb->pthru = NULL; 2922 scb->epthru = NULL; 2923 } 2924 2925 for( i = 0; i < adapter->max_cmds; i++ ) { 2926 2927 scb = &adapter->scb_list[i]; 2928 2929 scb->idx = i; 2930 2931 scb->sgl64 = pci_alloc_consistent(adapter->dev, 2932 sizeof(mega_sgl64) * adapter->sglen, 2933 &scb->sgl_dma_addr); 2934 2935 scb->sgl = (mega_sglist *)scb->sgl64; 2936 2937 if( !scb->sgl ) { 2938 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n"); 2939 mega_free_sgl(adapter); 2940 return -1; 2941 } 2942 2943 scb->pthru = pci_alloc_consistent(adapter->dev, 2944 sizeof(mega_passthru), 2945 &scb->pthru_dma_addr); 2946 2947 if( !scb->pthru ) { 2948 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n"); 2949 mega_free_sgl(adapter); 2950 return -1; 2951 } 2952 2953 scb->epthru = pci_alloc_consistent(adapter->dev, 2954 sizeof(mega_ext_passthru), 2955 &scb->epthru_dma_addr); 2956 2957 if( !scb->epthru ) { 2958 dev_warn(&adapter->dev->dev, 2959 "Can't allocate extended passthru\n"); 2960 mega_free_sgl(adapter); 2961 return -1; 2962 } 2963 2964 2965 scb->dma_type = MEGA_DMA_TYPE_NONE; 2966 2967 /* 2968 * Link to free list 2969 * lock not required since we are loading the driver, so no 2970 * commands possible right now. 2971 */ 2972 scb->state = SCB_FREE; 2973 scb->cmd = NULL; 2974 list_add(&scb->list, &adapter->free_list); 2975 } 2976 2977 return 0; 2978 } 2979 2980 2981 /** 2982 * megadev_open() 2983 * @inode - unused 2984 * @filep - unused 2985 * 2986 * Routines for the character/ioctl interface to the driver. Find out if this 2987 * is a valid open. 2988 */ 2989 static int 2990 megadev_open (struct inode *inode, struct file *filep) 2991 { 2992 /* 2993 * Only allow superuser to access private ioctl interface 2994 */ 2995 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 2996 2997 return 0; 2998 } 2999 3000 3001 /** 3002 * megadev_ioctl() 3003 * @inode - Our device inode 3004 * @filep - unused 3005 * @cmd - ioctl command 3006 * @arg - user buffer 3007 * 3008 * ioctl entry point for our private ioctl interface. We move the data in from 3009 * the user space, prepare the command (if necessary, convert the old MIMD 3010 * ioctl to new ioctl command), and issue a synchronous command to the 3011 * controller. 3012 */ 3013 static int 3014 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3015 { 3016 adapter_t *adapter; 3017 nitioctl_t uioc; 3018 int adapno; 3019 int rval; 3020 mega_passthru __user *upthru; /* user address for passthru */ 3021 mega_passthru *pthru; /* copy user passthru here */ 3022 dma_addr_t pthru_dma_hndl; 3023 void *data = NULL; /* data to be transferred */ 3024 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 3025 megacmd_t mc; 3026 megastat_t __user *ustats; 3027 int num_ldrv; 3028 u32 uxferaddr = 0; 3029 struct pci_dev *pdev; 3030 3031 ustats = NULL; /* avoid compilation warnings */ 3032 num_ldrv = 0; 3033 3034 /* 3035 * Make sure only USCSICMD are issued through this interface. 3036 * MIMD application would still fire different command. 3037 */ 3038 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 3039 return -EINVAL; 3040 } 3041 3042 /* 3043 * Check and convert a possible MIMD command to NIT command. 3044 * mega_m_to_n() copies the data from the user space, so we do not 3045 * have to do it here. 3046 * NOTE: We will need some user address to copyout the data, therefore 3047 * the inteface layer will also provide us with the required user 3048 * addresses. 3049 */ 3050 memset(&uioc, 0, sizeof(nitioctl_t)); 3051 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3052 return rval; 3053 3054 3055 switch( uioc.opcode ) { 3056 3057 case GET_DRIVER_VER: 3058 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3059 return (-EFAULT); 3060 3061 break; 3062 3063 case GET_N_ADAP: 3064 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3065 return (-EFAULT); 3066 3067 /* 3068 * Shucks. MIMD interface returns a positive value for number 3069 * of adapters. TODO: Change it to return 0 when there is no 3070 * applicatio using mimd interface. 3071 */ 3072 return hba_count; 3073 3074 case GET_ADAP_INFO: 3075 3076 /* 3077 * Which adapter 3078 */ 3079 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3080 return (-ENODEV); 3081 3082 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3083 sizeof(struct mcontroller)) ) 3084 return (-EFAULT); 3085 break; 3086 3087 #if MEGA_HAVE_STATS 3088 3089 case GET_STATS: 3090 /* 3091 * Which adapter 3092 */ 3093 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3094 return (-ENODEV); 3095 3096 adapter = hba_soft_state[adapno]; 3097 3098 ustats = uioc.uioc_uaddr; 3099 3100 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3101 return (-EFAULT); 3102 3103 /* 3104 * Check for the validity of the logical drive number 3105 */ 3106 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3107 3108 if( copy_to_user(ustats->nreads, adapter->nreads, 3109 num_ldrv*sizeof(u32)) ) 3110 return -EFAULT; 3111 3112 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3113 num_ldrv*sizeof(u32)) ) 3114 return -EFAULT; 3115 3116 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3117 num_ldrv*sizeof(u32)) ) 3118 return -EFAULT; 3119 3120 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3121 num_ldrv*sizeof(u32)) ) 3122 return -EFAULT; 3123 3124 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3125 num_ldrv*sizeof(u32)) ) 3126 return -EFAULT; 3127 3128 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3129 num_ldrv*sizeof(u32)) ) 3130 return -EFAULT; 3131 3132 return 0; 3133 3134 #endif 3135 case MBOX_CMD: 3136 3137 /* 3138 * Which adapter 3139 */ 3140 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3141 return (-ENODEV); 3142 3143 adapter = hba_soft_state[adapno]; 3144 3145 /* 3146 * Deletion of logical drive is a special case. The adapter 3147 * should be quiescent before this command is issued. 3148 */ 3149 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3150 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3151 3152 /* 3153 * Do we support this feature 3154 */ 3155 if( !adapter->support_random_del ) { 3156 dev_warn(&adapter->dev->dev, "logdrv " 3157 "delete on non-supporting F/W\n"); 3158 3159 return (-EINVAL); 3160 } 3161 3162 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3163 3164 if( rval == 0 ) { 3165 memset(&mc, 0, sizeof(megacmd_t)); 3166 3167 mc.status = rval; 3168 3169 rval = mega_n_to_m((void __user *)arg, &mc); 3170 } 3171 3172 return rval; 3173 } 3174 /* 3175 * This interface only support the regular passthru commands. 3176 * Reject extended passthru and 64-bit passthru 3177 */ 3178 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3179 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3180 3181 dev_warn(&adapter->dev->dev, "rejected passthru\n"); 3182 3183 return (-EINVAL); 3184 } 3185 3186 /* 3187 * For all internal commands, the buffer must be allocated in 3188 * <4GB address range 3189 */ 3190 if( make_local_pdev(adapter, &pdev) != 0 ) 3191 return -EIO; 3192 3193 /* Is it a passthru command or a DCMD */ 3194 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3195 /* Passthru commands */ 3196 3197 pthru = pci_alloc_consistent(pdev, 3198 sizeof(mega_passthru), 3199 &pthru_dma_hndl); 3200 3201 if( pthru == NULL ) { 3202 free_local_pdev(pdev); 3203 return (-ENOMEM); 3204 } 3205 3206 /* 3207 * The user passthru structure 3208 */ 3209 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; 3210 3211 /* 3212 * Copy in the user passthru here. 3213 */ 3214 if( copy_from_user(pthru, upthru, 3215 sizeof(mega_passthru)) ) { 3216 3217 pci_free_consistent(pdev, 3218 sizeof(mega_passthru), pthru, 3219 pthru_dma_hndl); 3220 3221 free_local_pdev(pdev); 3222 3223 return (-EFAULT); 3224 } 3225 3226 /* 3227 * Is there a data transfer 3228 */ 3229 if( pthru->dataxferlen ) { 3230 data = pci_alloc_consistent(pdev, 3231 pthru->dataxferlen, 3232 &data_dma_hndl); 3233 3234 if( data == NULL ) { 3235 pci_free_consistent(pdev, 3236 sizeof(mega_passthru), 3237 pthru, 3238 pthru_dma_hndl); 3239 3240 free_local_pdev(pdev); 3241 3242 return (-ENOMEM); 3243 } 3244 3245 /* 3246 * Save the user address and point the kernel 3247 * address at just allocated memory 3248 */ 3249 uxferaddr = pthru->dataxferaddr; 3250 pthru->dataxferaddr = data_dma_hndl; 3251 } 3252 3253 3254 /* 3255 * Is data coming down-stream 3256 */ 3257 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3258 /* 3259 * Get the user data 3260 */ 3261 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3262 pthru->dataxferlen) ) { 3263 rval = (-EFAULT); 3264 goto freemem_and_return; 3265 } 3266 } 3267 3268 memset(&mc, 0, sizeof(megacmd_t)); 3269 3270 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3271 mc.xferaddr = (u32)pthru_dma_hndl; 3272 3273 /* 3274 * Issue the command 3275 */ 3276 mega_internal_command(adapter, &mc, pthru); 3277 3278 rval = mega_n_to_m((void __user *)arg, &mc); 3279 3280 if( rval ) goto freemem_and_return; 3281 3282 3283 /* 3284 * Is data going up-stream 3285 */ 3286 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3287 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3288 pthru->dataxferlen) ) { 3289 rval = (-EFAULT); 3290 } 3291 } 3292 3293 /* 3294 * Send the request sense data also, irrespective of 3295 * whether the user has asked for it or not. 3296 */ 3297 if (copy_to_user(upthru->reqsensearea, 3298 pthru->reqsensearea, 14)) 3299 rval = -EFAULT; 3300 3301 freemem_and_return: 3302 if( pthru->dataxferlen ) { 3303 pci_free_consistent(pdev, 3304 pthru->dataxferlen, data, 3305 data_dma_hndl); 3306 } 3307 3308 pci_free_consistent(pdev, sizeof(mega_passthru), 3309 pthru, pthru_dma_hndl); 3310 3311 free_local_pdev(pdev); 3312 3313 return rval; 3314 } 3315 else { 3316 /* DCMD commands */ 3317 3318 /* 3319 * Is there a data transfer 3320 */ 3321 if( uioc.xferlen ) { 3322 data = pci_alloc_consistent(pdev, 3323 uioc.xferlen, &data_dma_hndl); 3324 3325 if( data == NULL ) { 3326 free_local_pdev(pdev); 3327 return (-ENOMEM); 3328 } 3329 3330 uxferaddr = MBOX(uioc)->xferaddr; 3331 } 3332 3333 /* 3334 * Is data coming down-stream 3335 */ 3336 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3337 /* 3338 * Get the user data 3339 */ 3340 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3341 uioc.xferlen) ) { 3342 3343 pci_free_consistent(pdev, 3344 uioc.xferlen, 3345 data, data_dma_hndl); 3346 3347 free_local_pdev(pdev); 3348 3349 return (-EFAULT); 3350 } 3351 } 3352 3353 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3354 3355 mc.xferaddr = (u32)data_dma_hndl; 3356 3357 /* 3358 * Issue the command 3359 */ 3360 mega_internal_command(adapter, &mc, NULL); 3361 3362 rval = mega_n_to_m((void __user *)arg, &mc); 3363 3364 if( rval ) { 3365 if( uioc.xferlen ) { 3366 pci_free_consistent(pdev, 3367 uioc.xferlen, data, 3368 data_dma_hndl); 3369 } 3370 3371 free_local_pdev(pdev); 3372 3373 return rval; 3374 } 3375 3376 /* 3377 * Is data going up-stream 3378 */ 3379 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3380 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3381 uioc.xferlen) ) { 3382 3383 rval = (-EFAULT); 3384 } 3385 } 3386 3387 if( uioc.xferlen ) { 3388 pci_free_consistent(pdev, 3389 uioc.xferlen, data, 3390 data_dma_hndl); 3391 } 3392 3393 free_local_pdev(pdev); 3394 3395 return rval; 3396 } 3397 3398 default: 3399 return (-EINVAL); 3400 } 3401 3402 return 0; 3403 } 3404 3405 static long 3406 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3407 { 3408 int ret; 3409 3410 mutex_lock(&megadev_mutex); 3411 ret = megadev_ioctl(filep, cmd, arg); 3412 mutex_unlock(&megadev_mutex); 3413 3414 return ret; 3415 } 3416 3417 /** 3418 * mega_m_to_n() 3419 * @arg - user address 3420 * @uioc - new ioctl structure 3421 * 3422 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3423 * structure 3424 * 3425 * Converts the older mimd ioctl structure to newer NIT structure 3426 */ 3427 static int 3428 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3429 { 3430 struct uioctl_t uioc_mimd; 3431 char signature[8] = {0}; 3432 u8 opcode; 3433 u8 subopcode; 3434 3435 3436 /* 3437 * check is the application conforms to NIT. We do not have to do much 3438 * in that case. 3439 * We exploit the fact that the signature is stored in the very 3440 * beginning of the structure. 3441 */ 3442 3443 if( copy_from_user(signature, arg, 7) ) 3444 return (-EFAULT); 3445 3446 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3447 3448 /* 3449 * NOTE NOTE: The nit ioctl is still under flux because of 3450 * change of mailbox definition, in HPE. No applications yet 3451 * use this interface and let's not have applications use this 3452 * interface till the new specifitions are in place. 3453 */ 3454 return -EINVAL; 3455 #if 0 3456 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3457 return (-EFAULT); 3458 return 0; 3459 #endif 3460 } 3461 3462 /* 3463 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3464 * 3465 * Get the user ioctl structure 3466 */ 3467 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3468 return (-EFAULT); 3469 3470 3471 /* 3472 * Get the opcode and subopcode for the commands 3473 */ 3474 opcode = uioc_mimd.ui.fcs.opcode; 3475 subopcode = uioc_mimd.ui.fcs.subopcode; 3476 3477 switch (opcode) { 3478 case 0x82: 3479 3480 switch (subopcode) { 3481 3482 case MEGAIOC_QDRVRVER: /* Query driver version */ 3483 uioc->opcode = GET_DRIVER_VER; 3484 uioc->uioc_uaddr = uioc_mimd.data; 3485 break; 3486 3487 case MEGAIOC_QNADAP: /* Get # of adapters */ 3488 uioc->opcode = GET_N_ADAP; 3489 uioc->uioc_uaddr = uioc_mimd.data; 3490 break; 3491 3492 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3493 uioc->opcode = GET_ADAP_INFO; 3494 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3495 uioc->uioc_uaddr = uioc_mimd.data; 3496 break; 3497 3498 default: 3499 return(-EINVAL); 3500 } 3501 3502 break; 3503 3504 3505 case 0x81: 3506 3507 uioc->opcode = MBOX_CMD; 3508 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3509 3510 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3511 3512 uioc->xferlen = uioc_mimd.ui.fcs.length; 3513 3514 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3515 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3516 3517 break; 3518 3519 case 0x80: 3520 3521 uioc->opcode = MBOX_CMD; 3522 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3523 3524 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3525 3526 /* 3527 * Choose the xferlen bigger of input and output data 3528 */ 3529 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3530 uioc_mimd.outlen : uioc_mimd.inlen; 3531 3532 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3533 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3534 3535 break; 3536 3537 default: 3538 return (-EINVAL); 3539 3540 } 3541 3542 return 0; 3543 } 3544 3545 /* 3546 * mega_n_to_m() 3547 * @arg - user address 3548 * @mc - mailbox command 3549 * 3550 * Updates the status information to the application, depending on application 3551 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3552 */ 3553 static int 3554 mega_n_to_m(void __user *arg, megacmd_t *mc) 3555 { 3556 nitioctl_t __user *uiocp; 3557 megacmd_t __user *umc; 3558 mega_passthru __user *upthru; 3559 struct uioctl_t __user *uioc_mimd; 3560 char signature[8] = {0}; 3561 3562 /* 3563 * check is the application conforms to NIT. 3564 */ 3565 if( copy_from_user(signature, arg, 7) ) 3566 return -EFAULT; 3567 3568 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3569 3570 uiocp = arg; 3571 3572 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3573 return (-EFAULT); 3574 3575 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3576 3577 umc = MBOX_P(uiocp); 3578 3579 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3580 return -EFAULT; 3581 3582 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3583 return (-EFAULT); 3584 } 3585 } 3586 else { 3587 uioc_mimd = arg; 3588 3589 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3590 return (-EFAULT); 3591 3592 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3593 3594 umc = (megacmd_t __user *)uioc_mimd->mbox; 3595 3596 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3597 return (-EFAULT); 3598 3599 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3600 return (-EFAULT); 3601 } 3602 } 3603 3604 return 0; 3605 } 3606 3607 3608 /* 3609 * MEGARAID 'FW' commands. 3610 */ 3611 3612 /** 3613 * mega_is_bios_enabled() 3614 * @adapter - pointer to our soft state 3615 * 3616 * issue command to find out if the BIOS is enabled for this controller 3617 */ 3618 static int 3619 mega_is_bios_enabled(adapter_t *adapter) 3620 { 3621 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3622 mbox_t *mbox; 3623 int ret; 3624 3625 mbox = (mbox_t *)raw_mbox; 3626 3627 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3628 3629 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3630 3631 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3632 3633 raw_mbox[0] = IS_BIOS_ENABLED; 3634 raw_mbox[2] = GET_BIOS; 3635 3636 3637 ret = issue_scb_block(adapter, raw_mbox); 3638 3639 return *(char *)adapter->mega_buffer; 3640 } 3641 3642 3643 /** 3644 * mega_enum_raid_scsi() 3645 * @adapter - pointer to our soft state 3646 * 3647 * Find out what channels are RAID/SCSI. This information is used to 3648 * differentiate the virtual channels and physical channels and to support 3649 * ROMB feature and non-disk devices. 3650 */ 3651 static void 3652 mega_enum_raid_scsi(adapter_t *adapter) 3653 { 3654 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3655 mbox_t *mbox; 3656 int i; 3657 3658 mbox = (mbox_t *)raw_mbox; 3659 3660 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3661 3662 /* 3663 * issue command to find out what channels are raid/scsi 3664 */ 3665 raw_mbox[0] = CHNL_CLASS; 3666 raw_mbox[2] = GET_CHNL_CLASS; 3667 3668 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3669 3670 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3671 3672 /* 3673 * Non-ROMB firmware fail this command, so all channels 3674 * must be shown RAID 3675 */ 3676 adapter->mega_ch_class = 0xFF; 3677 3678 if(!issue_scb_block(adapter, raw_mbox)) { 3679 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 3680 3681 } 3682 3683 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3684 if( (adapter->mega_ch_class >> i) & 0x01 ) { 3685 dev_info(&adapter->dev->dev, "channel[%d] is raid\n", 3686 i); 3687 } 3688 else { 3689 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n", 3690 i); 3691 } 3692 } 3693 3694 return; 3695 } 3696 3697 3698 /** 3699 * mega_get_boot_drv() 3700 * @adapter - pointer to our soft state 3701 * 3702 * Find out which device is the boot device. Note, any logical drive or any 3703 * phyical device (e.g., a CDROM) can be designated as a boot device. 3704 */ 3705 static void 3706 mega_get_boot_drv(adapter_t *adapter) 3707 { 3708 struct private_bios_data *prv_bios_data; 3709 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3710 mbox_t *mbox; 3711 u16 cksum = 0; 3712 u8 *cksum_p; 3713 u8 boot_pdrv; 3714 int i; 3715 3716 mbox = (mbox_t *)raw_mbox; 3717 3718 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3719 3720 raw_mbox[0] = BIOS_PVT_DATA; 3721 raw_mbox[2] = GET_BIOS_PVT_DATA; 3722 3723 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3724 3725 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3726 3727 adapter->boot_ldrv_enabled = 0; 3728 adapter->boot_ldrv = 0; 3729 3730 adapter->boot_pdrv_enabled = 0; 3731 adapter->boot_pdrv_ch = 0; 3732 adapter->boot_pdrv_tgt = 0; 3733 3734 if(issue_scb_block(adapter, raw_mbox) == 0) { 3735 prv_bios_data = 3736 (struct private_bios_data *)adapter->mega_buffer; 3737 3738 cksum = 0; 3739 cksum_p = (char *)prv_bios_data; 3740 for (i = 0; i < 14; i++ ) { 3741 cksum += (u16)(*cksum_p++); 3742 } 3743 3744 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 3745 3746 /* 3747 * If MSB is set, a physical drive is set as boot 3748 * device 3749 */ 3750 if( prv_bios_data->boot_drv & 0x80 ) { 3751 adapter->boot_pdrv_enabled = 1; 3752 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 3753 adapter->boot_pdrv_ch = boot_pdrv / 16; 3754 adapter->boot_pdrv_tgt = boot_pdrv % 16; 3755 } 3756 else { 3757 adapter->boot_ldrv_enabled = 1; 3758 adapter->boot_ldrv = prv_bios_data->boot_drv; 3759 } 3760 } 3761 } 3762 3763 } 3764 3765 /** 3766 * mega_support_random_del() 3767 * @adapter - pointer to our soft state 3768 * 3769 * Find out if this controller supports random deletion and addition of 3770 * logical drives 3771 */ 3772 static int 3773 mega_support_random_del(adapter_t *adapter) 3774 { 3775 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3776 mbox_t *mbox; 3777 int rval; 3778 3779 mbox = (mbox_t *)raw_mbox; 3780 3781 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3782 3783 /* 3784 * issue command 3785 */ 3786 raw_mbox[0] = FC_DEL_LOGDRV; 3787 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 3788 3789 rval = issue_scb_block(adapter, raw_mbox); 3790 3791 return !rval; 3792 } 3793 3794 3795 /** 3796 * mega_support_ext_cdb() 3797 * @adapter - pointer to our soft state 3798 * 3799 * Find out if this firmware support cdblen > 10 3800 */ 3801 static int 3802 mega_support_ext_cdb(adapter_t *adapter) 3803 { 3804 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3805 mbox_t *mbox; 3806 int rval; 3807 3808 mbox = (mbox_t *)raw_mbox; 3809 3810 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3811 /* 3812 * issue command to find out if controller supports extended CDBs. 3813 */ 3814 raw_mbox[0] = 0xA4; 3815 raw_mbox[2] = 0x16; 3816 3817 rval = issue_scb_block(adapter, raw_mbox); 3818 3819 return !rval; 3820 } 3821 3822 3823 /** 3824 * mega_del_logdrv() 3825 * @adapter - pointer to our soft state 3826 * @logdrv - logical drive to be deleted 3827 * 3828 * Delete the specified logical drive. It is the responsibility of the user 3829 * app to let the OS know about this operation. 3830 */ 3831 static int 3832 mega_del_logdrv(adapter_t *adapter, int logdrv) 3833 { 3834 unsigned long flags; 3835 scb_t *scb; 3836 int rval; 3837 3838 /* 3839 * Stop sending commands to the controller, queue them internally. 3840 * When deletion is complete, ISR will flush the queue. 3841 */ 3842 atomic_set(&adapter->quiescent, 1); 3843 3844 /* 3845 * Wait till all the issued commands are complete and there are no 3846 * commands in the pending queue 3847 */ 3848 while (atomic_read(&adapter->pend_cmds) > 0 || 3849 !list_empty(&adapter->pending_list)) 3850 msleep(1000); /* sleep for 1s */ 3851 3852 rval = mega_do_del_logdrv(adapter, logdrv); 3853 3854 spin_lock_irqsave(&adapter->lock, flags); 3855 3856 /* 3857 * If delete operation was successful, add 0x80 to the logical drive 3858 * ids for commands in the pending queue. 3859 */ 3860 if (adapter->read_ldidmap) { 3861 struct list_head *pos; 3862 list_for_each(pos, &adapter->pending_list) { 3863 scb = list_entry(pos, scb_t, list); 3864 if (scb->pthru->logdrv < 0x80 ) 3865 scb->pthru->logdrv += 0x80; 3866 } 3867 } 3868 3869 atomic_set(&adapter->quiescent, 0); 3870 3871 mega_runpendq(adapter); 3872 3873 spin_unlock_irqrestore(&adapter->lock, flags); 3874 3875 return rval; 3876 } 3877 3878 3879 static int 3880 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 3881 { 3882 megacmd_t mc; 3883 int rval; 3884 3885 memset( &mc, 0, sizeof(megacmd_t)); 3886 3887 mc.cmd = FC_DEL_LOGDRV; 3888 mc.opcode = OP_DEL_LOGDRV; 3889 mc.subopcode = logdrv; 3890 3891 rval = mega_internal_command(adapter, &mc, NULL); 3892 3893 /* log this event */ 3894 if(rval) { 3895 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv); 3896 return rval; 3897 } 3898 3899 /* 3900 * After deleting first logical drive, the logical drives must be 3901 * addressed by adding 0x80 to the logical drive id. 3902 */ 3903 adapter->read_ldidmap = 1; 3904 3905 return rval; 3906 } 3907 3908 3909 /** 3910 * mega_get_max_sgl() 3911 * @adapter - pointer to our soft state 3912 * 3913 * Find out the maximum number of scatter-gather elements supported by this 3914 * version of the firmware 3915 */ 3916 static void 3917 mega_get_max_sgl(adapter_t *adapter) 3918 { 3919 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3920 mbox_t *mbox; 3921 3922 mbox = (mbox_t *)raw_mbox; 3923 3924 memset(mbox, 0, sizeof(raw_mbox)); 3925 3926 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3927 3928 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3929 3930 raw_mbox[0] = MAIN_MISC_OPCODE; 3931 raw_mbox[2] = GET_MAX_SG_SUPPORT; 3932 3933 3934 if( issue_scb_block(adapter, raw_mbox) ) { 3935 /* 3936 * f/w does not support this command. Choose the default value 3937 */ 3938 adapter->sglen = MIN_SGLIST; 3939 } 3940 else { 3941 adapter->sglen = *((char *)adapter->mega_buffer); 3942 3943 /* 3944 * Make sure this is not more than the resources we are 3945 * planning to allocate 3946 */ 3947 if ( adapter->sglen > MAX_SGLIST ) 3948 adapter->sglen = MAX_SGLIST; 3949 } 3950 3951 return; 3952 } 3953 3954 3955 /** 3956 * mega_support_cluster() 3957 * @adapter - pointer to our soft state 3958 * 3959 * Find out if this firmware support cluster calls. 3960 */ 3961 static int 3962 mega_support_cluster(adapter_t *adapter) 3963 { 3964 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3965 mbox_t *mbox; 3966 3967 mbox = (mbox_t *)raw_mbox; 3968 3969 memset(mbox, 0, sizeof(raw_mbox)); 3970 3971 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3972 3973 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3974 3975 /* 3976 * Try to get the initiator id. This command will succeed iff the 3977 * clustering is available on this HBA. 3978 */ 3979 raw_mbox[0] = MEGA_GET_TARGET_ID; 3980 3981 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 3982 3983 /* 3984 * Cluster support available. Get the initiator target id. 3985 * Tell our id to mid-layer too. 3986 */ 3987 adapter->this_id = *(u32 *)adapter->mega_buffer; 3988 adapter->host->this_id = adapter->this_id; 3989 3990 return 1; 3991 } 3992 3993 return 0; 3994 } 3995 3996 #ifdef CONFIG_PROC_FS 3997 /** 3998 * mega_adapinq() 3999 * @adapter - pointer to our soft state 4000 * @dma_handle - DMA address of the buffer 4001 * 4002 * Issue internal commands while interrupts are available. 4003 * We only issue direct mailbox commands from within the driver. ioctl() 4004 * interface using these routines can issue passthru commands. 4005 */ 4006 static int 4007 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 4008 { 4009 megacmd_t mc; 4010 4011 memset(&mc, 0, sizeof(megacmd_t)); 4012 4013 if( adapter->flag & BOARD_40LD ) { 4014 mc.cmd = FC_NEW_CONFIG; 4015 mc.opcode = NC_SUBOP_ENQUIRY3; 4016 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 4017 } 4018 else { 4019 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 4020 } 4021 4022 mc.xferaddr = (u32)dma_handle; 4023 4024 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 4025 return -1; 4026 } 4027 4028 return 0; 4029 } 4030 4031 4032 /** mega_internal_dev_inquiry() 4033 * @adapter - pointer to our soft state 4034 * @ch - channel for this device 4035 * @tgt - ID of this device 4036 * @buf_dma_handle - DMA address of the buffer 4037 * 4038 * Issue the scsi inquiry for the specified device. 4039 */ 4040 static int 4041 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4042 dma_addr_t buf_dma_handle) 4043 { 4044 mega_passthru *pthru; 4045 dma_addr_t pthru_dma_handle; 4046 megacmd_t mc; 4047 int rval; 4048 struct pci_dev *pdev; 4049 4050 4051 /* 4052 * For all internal commands, the buffer must be allocated in <4GB 4053 * address range 4054 */ 4055 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4056 4057 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4058 &pthru_dma_handle); 4059 4060 if( pthru == NULL ) { 4061 free_local_pdev(pdev); 4062 return -1; 4063 } 4064 4065 pthru->timeout = 2; 4066 pthru->ars = 1; 4067 pthru->reqsenselen = 14; 4068 pthru->islogical = 0; 4069 4070 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4071 4072 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4073 4074 pthru->cdblen = 6; 4075 4076 pthru->cdb[0] = INQUIRY; 4077 pthru->cdb[1] = 0; 4078 pthru->cdb[2] = 0; 4079 pthru->cdb[3] = 0; 4080 pthru->cdb[4] = 255; 4081 pthru->cdb[5] = 0; 4082 4083 4084 pthru->dataxferaddr = (u32)buf_dma_handle; 4085 pthru->dataxferlen = 256; 4086 4087 memset(&mc, 0, sizeof(megacmd_t)); 4088 4089 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4090 mc.xferaddr = (u32)pthru_dma_handle; 4091 4092 rval = mega_internal_command(adapter, &mc, pthru); 4093 4094 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4095 pthru_dma_handle); 4096 4097 free_local_pdev(pdev); 4098 4099 return rval; 4100 } 4101 #endif 4102 4103 /** 4104 * mega_internal_command() 4105 * @adapter - pointer to our soft state 4106 * @mc - the mailbox command 4107 * @pthru - Passthru structure for DCDB commands 4108 * 4109 * Issue the internal commands in interrupt mode. 4110 * The last argument is the address of the passthru structure if the command 4111 * to be fired is a passthru command 4112 * 4113 * Note: parameter 'pthru' is null for non-passthru commands. 4114 */ 4115 static int 4116 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4117 { 4118 unsigned long flags; 4119 scb_t *scb; 4120 int rval; 4121 4122 /* 4123 * The internal commands share one command id and hence are 4124 * serialized. This is so because we want to reserve maximum number of 4125 * available command ids for the I/O commands. 4126 */ 4127 mutex_lock(&adapter->int_mtx); 4128 4129 scb = &adapter->int_scb; 4130 memset(scb, 0, sizeof(scb_t)); 4131 4132 scb->idx = CMDID_INT_CMDS; 4133 scb->state |= SCB_ACTIVE | SCB_PENDQ; 4134 4135 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4136 4137 /* 4138 * Is it a passthru command 4139 */ 4140 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU) 4141 scb->pthru = pthru; 4142 4143 spin_lock_irqsave(&adapter->lock, flags); 4144 list_add_tail(&scb->list, &adapter->pending_list); 4145 /* 4146 * Check if the HBA is in quiescent state, e.g., during a 4147 * delete logical drive opertion. If it is, don't run 4148 * the pending_list. 4149 */ 4150 if (atomic_read(&adapter->quiescent) == 0) 4151 mega_runpendq(adapter); 4152 spin_unlock_irqrestore(&adapter->lock, flags); 4153 4154 wait_for_completion(&adapter->int_waitq); 4155 4156 mc->status = rval = adapter->int_status; 4157 4158 /* 4159 * Print a debug message for all failed commands. Applications can use 4160 * this information. 4161 */ 4162 if (rval && trace_level) { 4163 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n", 4164 mc->cmd, mc->opcode, mc->subopcode, rval); 4165 } 4166 4167 mutex_unlock(&adapter->int_mtx); 4168 return rval; 4169 } 4170 4171 static struct scsi_host_template megaraid_template = { 4172 .module = THIS_MODULE, 4173 .name = "MegaRAID", 4174 .proc_name = "megaraid_legacy", 4175 .info = megaraid_info, 4176 .queuecommand = megaraid_queue, 4177 .bios_param = megaraid_biosparam, 4178 .max_sectors = MAX_SECTORS_PER_IO, 4179 .can_queue = MAX_COMMANDS, 4180 .this_id = DEFAULT_INITIATOR_ID, 4181 .sg_tablesize = MAX_SGLIST, 4182 .cmd_per_lun = DEF_CMD_PER_LUN, 4183 .use_clustering = ENABLE_CLUSTERING, 4184 .eh_abort_handler = megaraid_abort, 4185 .eh_device_reset_handler = megaraid_reset, 4186 .eh_bus_reset_handler = megaraid_reset, 4187 .eh_host_reset_handler = megaraid_reset, 4188 .no_write_same = 1, 4189 }; 4190 4191 static int 4192 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4193 { 4194 struct Scsi_Host *host; 4195 adapter_t *adapter; 4196 unsigned long mega_baseport, tbase, flag = 0; 4197 u16 subsysid, subsysvid; 4198 u8 pci_bus, pci_dev_func; 4199 int irq, i, j; 4200 int error = -ENODEV; 4201 4202 if (pci_enable_device(pdev)) 4203 goto out; 4204 pci_set_master(pdev); 4205 4206 pci_bus = pdev->bus->number; 4207 pci_dev_func = pdev->devfn; 4208 4209 /* 4210 * The megaraid3 stuff reports the ID of the Intel part which is not 4211 * remotely specific to the megaraid 4212 */ 4213 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4214 u16 magic; 4215 /* 4216 * Don't fall over the Compaq management cards using the same 4217 * PCI identifier 4218 */ 4219 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4220 pdev->subsystem_device == 0xC000) 4221 return -ENODEV; 4222 /* Now check the magic signature byte */ 4223 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4224 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4225 return -ENODEV; 4226 /* Ok it is probably a megaraid */ 4227 } 4228 4229 /* 4230 * For these vendor and device ids, signature offsets are not 4231 * valid and 64 bit is implicit 4232 */ 4233 if (id->driver_data & BOARD_64BIT) 4234 flag |= BOARD_64BIT; 4235 else { 4236 u32 magic64; 4237 4238 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4239 if (magic64 == HBA_SIGNATURE_64BIT) 4240 flag |= BOARD_64BIT; 4241 } 4242 4243 subsysvid = pdev->subsystem_vendor; 4244 subsysid = pdev->subsystem_device; 4245 4246 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n", 4247 id->vendor, id->device); 4248 4249 /* Read the base port and IRQ from PCI */ 4250 mega_baseport = pci_resource_start(pdev, 0); 4251 irq = pdev->irq; 4252 4253 tbase = mega_baseport; 4254 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4255 flag |= BOARD_MEMMAP; 4256 4257 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4258 dev_warn(&pdev->dev, "mem region busy!\n"); 4259 goto out_disable_device; 4260 } 4261 4262 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4263 if (!mega_baseport) { 4264 dev_warn(&pdev->dev, "could not map hba memory\n"); 4265 goto out_release_region; 4266 } 4267 } else { 4268 flag |= BOARD_IOMAP; 4269 mega_baseport += 0x10; 4270 4271 if (!request_region(mega_baseport, 16, "megaraid")) 4272 goto out_disable_device; 4273 } 4274 4275 /* Initialize SCSI Host structure */ 4276 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4277 if (!host) 4278 goto out_iounmap; 4279 4280 adapter = (adapter_t *)host->hostdata; 4281 memset(adapter, 0, sizeof(adapter_t)); 4282 4283 dev_notice(&pdev->dev, 4284 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4285 host->host_no, mega_baseport, irq); 4286 4287 adapter->base = mega_baseport; 4288 if (flag & BOARD_MEMMAP) 4289 adapter->mmio_base = (void __iomem *) mega_baseport; 4290 4291 INIT_LIST_HEAD(&adapter->free_list); 4292 INIT_LIST_HEAD(&adapter->pending_list); 4293 INIT_LIST_HEAD(&adapter->completed_list); 4294 4295 adapter->flag = flag; 4296 spin_lock_init(&adapter->lock); 4297 4298 host->cmd_per_lun = max_cmd_per_lun; 4299 host->max_sectors = max_sectors_per_io; 4300 4301 adapter->dev = pdev; 4302 adapter->host = host; 4303 4304 adapter->host->irq = irq; 4305 4306 if (flag & BOARD_MEMMAP) 4307 adapter->host->base = tbase; 4308 else { 4309 adapter->host->io_port = tbase; 4310 adapter->host->n_io_port = 16; 4311 } 4312 4313 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4314 4315 /* 4316 * Allocate buffer to issue internal commands. 4317 */ 4318 adapter->mega_buffer = pci_alloc_consistent(adapter->dev, 4319 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); 4320 if (!adapter->mega_buffer) { 4321 dev_warn(&pdev->dev, "out of RAM\n"); 4322 goto out_host_put; 4323 } 4324 4325 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL); 4326 if (!adapter->scb_list) { 4327 dev_warn(&pdev->dev, "out of RAM\n"); 4328 goto out_free_cmd_buffer; 4329 } 4330 4331 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4332 megaraid_isr_memmapped : megaraid_isr_iomapped, 4333 IRQF_SHARED, "megaraid", adapter)) { 4334 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq); 4335 goto out_free_scb_list; 4336 } 4337 4338 if (mega_setup_mailbox(adapter)) 4339 goto out_free_irq; 4340 4341 if (mega_query_adapter(adapter)) 4342 goto out_free_mbox; 4343 4344 /* 4345 * Have checks for some buggy f/w 4346 */ 4347 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4348 /* 4349 * Which firmware 4350 */ 4351 if (!strcmp(adapter->fw_version, "3.00") || 4352 !strcmp(adapter->fw_version, "3.01")) { 4353 4354 dev_warn(&pdev->dev, 4355 "Your card is a Dell PERC " 4356 "2/SC RAID controller with " 4357 "firmware\nmegaraid: 3.00 or 3.01. " 4358 "This driver is known to have " 4359 "corruption issues\nmegaraid: with " 4360 "those firmware versions on this " 4361 "specific card. In order\nmegaraid: " 4362 "to protect your data, please upgrade " 4363 "your firmware to version\nmegaraid: " 4364 "3.10 or later, available from the " 4365 "Dell Technical Support web\n" 4366 "megaraid: site at\nhttp://support." 4367 "dell.com/us/en/filelib/download/" 4368 "index.asp?fileid=2940\n" 4369 ); 4370 } 4371 } 4372 4373 /* 4374 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4375 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4376 * support, since this firmware cannot handle 64 bit 4377 * addressing 4378 */ 4379 if ((subsysvid == PCI_VENDOR_ID_HP) && 4380 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4381 /* 4382 * which firmware 4383 */ 4384 if (!strcmp(adapter->fw_version, "H01.07") || 4385 !strcmp(adapter->fw_version, "H01.08") || 4386 !strcmp(adapter->fw_version, "H01.09") ) { 4387 dev_warn(&pdev->dev, 4388 "Firmware H.01.07, " 4389 "H.01.08, and H.01.09 on 1M/2M " 4390 "controllers\n" 4391 "do not support 64 bit " 4392 "addressing.\nDISABLING " 4393 "64 bit support.\n"); 4394 adapter->flag &= ~BOARD_64BIT; 4395 } 4396 } 4397 4398 if (mega_is_bios_enabled(adapter)) 4399 mega_hbas[hba_count].is_bios_enabled = 1; 4400 mega_hbas[hba_count].hostdata_addr = adapter; 4401 4402 /* 4403 * Find out which channel is raid and which is scsi. This is 4404 * for ROMB support. 4405 */ 4406 mega_enum_raid_scsi(adapter); 4407 4408 /* 4409 * Find out if a logical drive is set as the boot drive. If 4410 * there is one, will make that as the first logical drive. 4411 * ROMB: Do we have to boot from a physical drive. Then all 4412 * the physical drives would appear before the logical disks. 4413 * Else, all the physical drives would be exported to the mid 4414 * layer after logical drives. 4415 */ 4416 mega_get_boot_drv(adapter); 4417 4418 if (adapter->boot_pdrv_enabled) { 4419 j = adapter->product_info.nchannels; 4420 for( i = 0; i < j; i++ ) 4421 adapter->logdrv_chan[i] = 0; 4422 for( i = j; i < NVIRT_CHAN + j; i++ ) 4423 adapter->logdrv_chan[i] = 1; 4424 } else { 4425 for (i = 0; i < NVIRT_CHAN; i++) 4426 adapter->logdrv_chan[i] = 1; 4427 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4428 adapter->logdrv_chan[i] = 0; 4429 adapter->mega_ch_class <<= NVIRT_CHAN; 4430 } 4431 4432 /* 4433 * Do we support random deletion and addition of logical 4434 * drives 4435 */ 4436 adapter->read_ldidmap = 0; /* set it after first logdrv 4437 delete cmd */ 4438 adapter->support_random_del = mega_support_random_del(adapter); 4439 4440 /* Initialize SCBs */ 4441 if (mega_init_scb(adapter)) 4442 goto out_free_mbox; 4443 4444 /* 4445 * Reset the pending commands counter 4446 */ 4447 atomic_set(&adapter->pend_cmds, 0); 4448 4449 /* 4450 * Reset the adapter quiescent flag 4451 */ 4452 atomic_set(&adapter->quiescent, 0); 4453 4454 hba_soft_state[hba_count] = adapter; 4455 4456 /* 4457 * Fill in the structure which needs to be passed back to the 4458 * application when it does an ioctl() for controller related 4459 * information. 4460 */ 4461 i = hba_count; 4462 4463 mcontroller[i].base = mega_baseport; 4464 mcontroller[i].irq = irq; 4465 mcontroller[i].numldrv = adapter->numldrv; 4466 mcontroller[i].pcibus = pci_bus; 4467 mcontroller[i].pcidev = id->device; 4468 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4469 mcontroller[i].pciid = -1; 4470 mcontroller[i].pcivendor = id->vendor; 4471 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4472 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4473 4474 4475 /* Set the Mode of addressing to 64 bit if we can */ 4476 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4477 pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 4478 adapter->has_64bit_addr = 1; 4479 } else { 4480 pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 4481 adapter->has_64bit_addr = 0; 4482 } 4483 4484 mutex_init(&adapter->int_mtx); 4485 init_completion(&adapter->int_waitq); 4486 4487 adapter->this_id = DEFAULT_INITIATOR_ID; 4488 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4489 4490 #if MEGA_HAVE_CLUSTERING 4491 /* 4492 * Is cluster support enabled on this controller 4493 * Note: In a cluster the HBAs ( the initiators ) will have 4494 * different target IDs and we cannot assume it to be 7. Call 4495 * to mega_support_cluster() will get the target ids also if 4496 * the cluster support is available 4497 */ 4498 adapter->has_cluster = mega_support_cluster(adapter); 4499 if (adapter->has_cluster) { 4500 dev_notice(&pdev->dev, 4501 "Cluster driver, initiator id:%d\n", 4502 adapter->this_id); 4503 } 4504 #endif 4505 4506 pci_set_drvdata(pdev, host); 4507 4508 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4509 4510 error = scsi_add_host(host, &pdev->dev); 4511 if (error) 4512 goto out_free_mbox; 4513 4514 scsi_scan_host(host); 4515 hba_count++; 4516 return 0; 4517 4518 out_free_mbox: 4519 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4520 adapter->una_mbox64, adapter->una_mbox64_dma); 4521 out_free_irq: 4522 free_irq(adapter->host->irq, adapter); 4523 out_free_scb_list: 4524 kfree(adapter->scb_list); 4525 out_free_cmd_buffer: 4526 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4527 adapter->mega_buffer, adapter->buf_dma_handle); 4528 out_host_put: 4529 scsi_host_put(host); 4530 out_iounmap: 4531 if (flag & BOARD_MEMMAP) 4532 iounmap((void *)mega_baseport); 4533 out_release_region: 4534 if (flag & BOARD_MEMMAP) 4535 release_mem_region(tbase, 128); 4536 else 4537 release_region(mega_baseport, 16); 4538 out_disable_device: 4539 pci_disable_device(pdev); 4540 out: 4541 return error; 4542 } 4543 4544 static void 4545 __megaraid_shutdown(adapter_t *adapter) 4546 { 4547 u_char raw_mbox[sizeof(struct mbox_out)]; 4548 mbox_t *mbox = (mbox_t *)raw_mbox; 4549 int i; 4550 4551 /* Flush adapter cache */ 4552 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4553 raw_mbox[0] = FLUSH_ADAPTER; 4554 4555 free_irq(adapter->host->irq, adapter); 4556 4557 /* Issue a blocking (interrupts disabled) command to the card */ 4558 issue_scb_block(adapter, raw_mbox); 4559 4560 /* Flush disks cache */ 4561 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4562 raw_mbox[0] = FLUSH_SYSTEM; 4563 4564 /* Issue a blocking (interrupts disabled) command to the card */ 4565 issue_scb_block(adapter, raw_mbox); 4566 4567 if (atomic_read(&adapter->pend_cmds) > 0) 4568 dev_warn(&adapter->dev->dev, "pending commands!!\n"); 4569 4570 /* 4571 * Have a delibrate delay to make sure all the caches are 4572 * actually flushed. 4573 */ 4574 for (i = 0; i <= 10; i++) 4575 mdelay(1000); 4576 } 4577 4578 static void 4579 megaraid_remove_one(struct pci_dev *pdev) 4580 { 4581 struct Scsi_Host *host = pci_get_drvdata(pdev); 4582 adapter_t *adapter = (adapter_t *)host->hostdata; 4583 4584 scsi_remove_host(host); 4585 4586 __megaraid_shutdown(adapter); 4587 4588 /* Free our resources */ 4589 if (adapter->flag & BOARD_MEMMAP) { 4590 iounmap((void *)adapter->base); 4591 release_mem_region(adapter->host->base, 128); 4592 } else 4593 release_region(adapter->base, 16); 4594 4595 mega_free_sgl(adapter); 4596 4597 #ifdef CONFIG_PROC_FS 4598 if (adapter->controller_proc_dir_entry) { 4599 remove_proc_entry("stat", adapter->controller_proc_dir_entry); 4600 remove_proc_entry("config", 4601 adapter->controller_proc_dir_entry); 4602 remove_proc_entry("mailbox", 4603 adapter->controller_proc_dir_entry); 4604 #if MEGA_HAVE_ENH_PROC 4605 remove_proc_entry("rebuild-rate", 4606 adapter->controller_proc_dir_entry); 4607 remove_proc_entry("battery-status", 4608 adapter->controller_proc_dir_entry); 4609 4610 remove_proc_entry("diskdrives-ch0", 4611 adapter->controller_proc_dir_entry); 4612 remove_proc_entry("diskdrives-ch1", 4613 adapter->controller_proc_dir_entry); 4614 remove_proc_entry("diskdrives-ch2", 4615 adapter->controller_proc_dir_entry); 4616 remove_proc_entry("diskdrives-ch3", 4617 adapter->controller_proc_dir_entry); 4618 4619 remove_proc_entry("raiddrives-0-9", 4620 adapter->controller_proc_dir_entry); 4621 remove_proc_entry("raiddrives-10-19", 4622 adapter->controller_proc_dir_entry); 4623 remove_proc_entry("raiddrives-20-29", 4624 adapter->controller_proc_dir_entry); 4625 remove_proc_entry("raiddrives-30-39", 4626 adapter->controller_proc_dir_entry); 4627 #endif 4628 { 4629 char buf[12] = { 0 }; 4630 sprintf(buf, "hba%d", adapter->host->host_no); 4631 remove_proc_entry(buf, mega_proc_dir_entry); 4632 } 4633 } 4634 #endif 4635 4636 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4637 adapter->mega_buffer, adapter->buf_dma_handle); 4638 kfree(adapter->scb_list); 4639 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4640 adapter->una_mbox64, adapter->una_mbox64_dma); 4641 4642 scsi_host_put(host); 4643 pci_disable_device(pdev); 4644 4645 hba_count--; 4646 } 4647 4648 static void 4649 megaraid_shutdown(struct pci_dev *pdev) 4650 { 4651 struct Scsi_Host *host = pci_get_drvdata(pdev); 4652 adapter_t *adapter = (adapter_t *)host->hostdata; 4653 4654 __megaraid_shutdown(adapter); 4655 } 4656 4657 static struct pci_device_id megaraid_pci_tbl[] = { 4658 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 4659 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4660 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 4661 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4662 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 4663 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4664 {0,} 4665 }; 4666 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 4667 4668 static struct pci_driver megaraid_pci_driver = { 4669 .name = "megaraid_legacy", 4670 .id_table = megaraid_pci_tbl, 4671 .probe = megaraid_probe_one, 4672 .remove = megaraid_remove_one, 4673 .shutdown = megaraid_shutdown, 4674 }; 4675 4676 static int __init megaraid_init(void) 4677 { 4678 int error; 4679 4680 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 4681 max_cmd_per_lun = MAX_CMD_PER_LUN; 4682 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 4683 max_mbox_busy_wait = MBOX_BUSY_WAIT; 4684 4685 #ifdef CONFIG_PROC_FS 4686 mega_proc_dir_entry = proc_mkdir("megaraid", NULL); 4687 if (!mega_proc_dir_entry) { 4688 printk(KERN_WARNING 4689 "megaraid: failed to create megaraid root\n"); 4690 } 4691 #endif 4692 error = pci_register_driver(&megaraid_pci_driver); 4693 if (error) { 4694 #ifdef CONFIG_PROC_FS 4695 remove_proc_entry("megaraid", NULL); 4696 #endif 4697 return error; 4698 } 4699 4700 /* 4701 * Register the driver as a character device, for applications 4702 * to access it for ioctls. 4703 * First argument (major) to register_chrdev implies a dynamic 4704 * major number allocation. 4705 */ 4706 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 4707 if (!major) { 4708 printk(KERN_WARNING 4709 "megaraid: failed to register char device\n"); 4710 } 4711 4712 return 0; 4713 } 4714 4715 static void __exit megaraid_exit(void) 4716 { 4717 /* 4718 * Unregister the character device interface to the driver. 4719 */ 4720 unregister_chrdev(major, "megadev_legacy"); 4721 4722 pci_unregister_driver(&megaraid_pci_driver); 4723 4724 #ifdef CONFIG_PROC_FS 4725 remove_proc_entry("megaraid", NULL); 4726 #endif 4727 } 4728 4729 module_init(megaraid_init); 4730 module_exit(megaraid_exit); 4731 4732 /* vi: set ts=8 sw=8 tw=78: */ 4733