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 <asm/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 printk(KERN_WARNING 272 "megaraid: 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 sprintf (adapter->fw_version, "%c%d%d.%d%d", 315 adapter->product_info.fw_version[2], 316 0, 317 adapter->product_info.fw_version[1] & 0x0f, 318 0, 319 adapter->product_info.fw_version[0] & 0x0f); 320 sprintf (adapter->bios_version, "%c%d%d.%d%d", 321 adapter->product_info.bios_version[2], 322 0, 323 adapter->product_info.bios_version[1] & 0x0f, 324 0, 325 adapter->product_info.bios_version[0] & 0x0f); 326 } else { 327 memcpy(adapter->fw_version, 328 (char *)adapter->product_info.fw_version, 4); 329 adapter->fw_version[4] = 0; 330 331 memcpy(adapter->bios_version, 332 (char *)adapter->product_info.bios_version, 4); 333 334 adapter->bios_version[4] = 0; 335 } 336 337 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n", 338 adapter->fw_version, adapter->bios_version, adapter->numldrv); 339 340 /* 341 * Do we support extended (>10 bytes) cdbs 342 */ 343 adapter->support_ext_cdb = mega_support_ext_cdb(adapter); 344 if (adapter->support_ext_cdb) 345 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n"); 346 347 348 return 0; 349 } 350 351 /** 352 * mega_runpendq() 353 * @adapter - pointer to our soft state 354 * 355 * Runs through the list of pending requests. 356 */ 357 static inline void 358 mega_runpendq(adapter_t *adapter) 359 { 360 if(!list_empty(&adapter->pending_list)) 361 __mega_runpendq(adapter); 362 } 363 364 /* 365 * megaraid_queue() 366 * @scmd - Issue this scsi command 367 * @done - the callback hook into the scsi mid-layer 368 * 369 * The command queuing entry point for the mid-layer. 370 */ 371 static int 372 megaraid_queue_lck(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *)) 373 { 374 adapter_t *adapter; 375 scb_t *scb; 376 int busy=0; 377 unsigned long flags; 378 379 adapter = (adapter_t *)scmd->device->host->hostdata; 380 381 scmd->scsi_done = done; 382 383 384 /* 385 * Allocate and build a SCB request 386 * busy flag will be set if mega_build_cmd() command could not 387 * allocate scb. We will return non-zero status in that case. 388 * NOTE: scb can be null even though certain commands completed 389 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would 390 * return 0 in that case. 391 */ 392 393 spin_lock_irqsave(&adapter->lock, flags); 394 scb = mega_build_cmd(adapter, scmd, &busy); 395 if (!scb) 396 goto out; 397 398 scb->state |= SCB_PENDQ; 399 list_add_tail(&scb->list, &adapter->pending_list); 400 401 /* 402 * Check if the HBA is in quiescent state, e.g., during a 403 * delete logical drive opertion. If it is, don't run 404 * the pending_list. 405 */ 406 if (atomic_read(&adapter->quiescent) == 0) 407 mega_runpendq(adapter); 408 409 busy = 0; 410 out: 411 spin_unlock_irqrestore(&adapter->lock, flags); 412 return busy; 413 } 414 415 static DEF_SCSI_QCMD(megaraid_queue) 416 417 /** 418 * mega_allocate_scb() 419 * @adapter - pointer to our soft state 420 * @cmd - scsi command from the mid-layer 421 * 422 * Allocate a SCB structure. This is the central structure for controller 423 * commands. 424 */ 425 static inline scb_t * 426 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd) 427 { 428 struct list_head *head = &adapter->free_list; 429 scb_t *scb; 430 431 /* Unlink command from Free List */ 432 if( !list_empty(head) ) { 433 434 scb = list_entry(head->next, scb_t, list); 435 436 list_del_init(head->next); 437 438 scb->state = SCB_ACTIVE; 439 scb->cmd = cmd; 440 scb->dma_type = MEGA_DMA_TYPE_NONE; 441 442 return scb; 443 } 444 445 return NULL; 446 } 447 448 /** 449 * mega_get_ldrv_num() 450 * @adapter - pointer to our soft state 451 * @cmd - scsi mid layer command 452 * @channel - channel on the controller 453 * 454 * Calculate the logical drive number based on the information in scsi command 455 * and the channel number. 456 */ 457 static inline int 458 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel) 459 { 460 int tgt; 461 int ldrv_num; 462 463 tgt = cmd->device->id; 464 465 if ( tgt > adapter->this_id ) 466 tgt--; /* we do not get inquires for initiator id */ 467 468 ldrv_num = (channel * 15) + tgt; 469 470 471 /* 472 * If we have a logical drive with boot enabled, project it first 473 */ 474 if( adapter->boot_ldrv_enabled ) { 475 if( ldrv_num == 0 ) { 476 ldrv_num = adapter->boot_ldrv; 477 } 478 else { 479 if( ldrv_num <= adapter->boot_ldrv ) { 480 ldrv_num--; 481 } 482 } 483 } 484 485 /* 486 * If "delete logical drive" feature is enabled on this controller. 487 * Do only if at least one delete logical drive operation was done. 488 * 489 * Also, after logical drive deletion, instead of logical drive number, 490 * the value returned should be 0x80+logical drive id. 491 * 492 * These is valid only for IO commands. 493 */ 494 495 if (adapter->support_random_del && adapter->read_ldidmap ) 496 switch (cmd->cmnd[0]) { 497 case READ_6: /* fall through */ 498 case WRITE_6: /* fall through */ 499 case READ_10: /* fall through */ 500 case WRITE_10: 501 ldrv_num += 0x80; 502 } 503 504 return ldrv_num; 505 } 506 507 /** 508 * mega_build_cmd() 509 * @adapter - pointer to our soft state 510 * @cmd - Prepare using this scsi command 511 * @busy - busy flag if no resources 512 * 513 * Prepares a command and scatter gather list for the controller. This routine 514 * also finds out if the commands is intended for a logical drive or a 515 * physical device and prepares the controller command accordingly. 516 * 517 * We also re-order the logical drives and physical devices based on their 518 * boot settings. 519 */ 520 static scb_t * 521 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy) 522 { 523 mega_ext_passthru *epthru; 524 mega_passthru *pthru; 525 scb_t *scb; 526 mbox_t *mbox; 527 u32 seg; 528 char islogical; 529 int max_ldrv_num; 530 int channel = 0; 531 int target = 0; 532 int ldrv_num = 0; /* logical drive number */ 533 534 /* 535 * We know what channels our logical drives are on - mega_find_card() 536 */ 537 islogical = adapter->logdrv_chan[cmd->device->channel]; 538 539 /* 540 * The theory: If physical drive is chosen for boot, all the physical 541 * devices are exported before the logical drives, otherwise physical 542 * devices are pushed after logical drives, in which case - Kernel sees 543 * the physical devices on virtual channel which is obviously converted 544 * to actual channel on the HBA. 545 */ 546 if( adapter->boot_pdrv_enabled ) { 547 if( islogical ) { 548 /* logical channel */ 549 channel = cmd->device->channel - 550 adapter->product_info.nchannels; 551 } 552 else { 553 /* this is physical channel */ 554 channel = cmd->device->channel; 555 target = cmd->device->id; 556 557 /* 558 * boot from a physical disk, that disk needs to be 559 * exposed first IF both the channels are SCSI, then 560 * booting from the second channel is not allowed. 561 */ 562 if( target == 0 ) { 563 target = adapter->boot_pdrv_tgt; 564 } 565 else if( target == adapter->boot_pdrv_tgt ) { 566 target = 0; 567 } 568 } 569 } 570 else { 571 if( islogical ) { 572 /* this is the logical channel */ 573 channel = cmd->device->channel; 574 } 575 else { 576 /* physical channel */ 577 channel = cmd->device->channel - NVIRT_CHAN; 578 target = cmd->device->id; 579 } 580 } 581 582 583 if(islogical) { 584 585 /* have just LUN 0 for each target on virtual channels */ 586 if (cmd->device->lun) { 587 cmd->result = (DID_BAD_TARGET << 16); 588 cmd->scsi_done(cmd); 589 return NULL; 590 } 591 592 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 593 594 595 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 596 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 597 598 /* 599 * max_ldrv_num increases by 0x80 if some logical drive was 600 * deleted. 601 */ 602 if(adapter->read_ldidmap) 603 max_ldrv_num += 0x80; 604 605 if(ldrv_num > max_ldrv_num ) { 606 cmd->result = (DID_BAD_TARGET << 16); 607 cmd->scsi_done(cmd); 608 return NULL; 609 } 610 611 } 612 else { 613 if( cmd->device->lun > 7) { 614 /* 615 * Do not support lun >7 for physically accessed 616 * devices 617 */ 618 cmd->result = (DID_BAD_TARGET << 16); 619 cmd->scsi_done(cmd); 620 return NULL; 621 } 622 } 623 624 /* 625 * 626 * Logical drive commands 627 * 628 */ 629 if(islogical) { 630 switch (cmd->cmnd[0]) { 631 case TEST_UNIT_READY: 632 #if MEGA_HAVE_CLUSTERING 633 /* 634 * Do we support clustering and is the support enabled 635 * If no, return success always 636 */ 637 if( !adapter->has_cluster ) { 638 cmd->result = (DID_OK << 16); 639 cmd->scsi_done(cmd); 640 return NULL; 641 } 642 643 if(!(scb = mega_allocate_scb(adapter, cmd))) { 644 *busy = 1; 645 return NULL; 646 } 647 648 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 649 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 650 scb->raw_mbox[3] = ldrv_num; 651 652 scb->dma_direction = PCI_DMA_NONE; 653 654 return scb; 655 #else 656 cmd->result = (DID_OK << 16); 657 cmd->scsi_done(cmd); 658 return NULL; 659 #endif 660 661 case MODE_SENSE: { 662 char *buf; 663 struct scatterlist *sg; 664 665 sg = scsi_sglist(cmd); 666 buf = kmap_atomic(sg_page(sg)) + sg->offset; 667 668 memset(buf, 0, cmd->cmnd[4]); 669 kunmap_atomic(buf - sg->offset); 670 671 cmd->result = (DID_OK << 16); 672 cmd->scsi_done(cmd); 673 return NULL; 674 } 675 676 case READ_CAPACITY: 677 case INQUIRY: 678 679 if(!(adapter->flag & (1L << cmd->device->channel))) { 680 681 printk(KERN_NOTICE 682 "scsi%d: scanning scsi channel %d ", 683 adapter->host->host_no, 684 cmd->device->channel); 685 printk("for logical drives.\n"); 686 687 adapter->flag |= (1L << cmd->device->channel); 688 } 689 690 /* Allocate a SCB and initialize passthru */ 691 if(!(scb = mega_allocate_scb(adapter, cmd))) { 692 *busy = 1; 693 return NULL; 694 } 695 pthru = scb->pthru; 696 697 mbox = (mbox_t *)scb->raw_mbox; 698 memset(mbox, 0, sizeof(scb->raw_mbox)); 699 memset(pthru, 0, sizeof(mega_passthru)); 700 701 pthru->timeout = 0; 702 pthru->ars = 1; 703 pthru->reqsenselen = 14; 704 pthru->islogical = 1; 705 pthru->logdrv = ldrv_num; 706 pthru->cdblen = cmd->cmd_len; 707 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 708 709 if( adapter->has_64bit_addr ) { 710 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 711 } 712 else { 713 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 714 } 715 716 scb->dma_direction = PCI_DMA_FROMDEVICE; 717 718 pthru->numsgelements = mega_build_sglist(adapter, scb, 719 &pthru->dataxferaddr, &pthru->dataxferlen); 720 721 mbox->m_out.xferaddr = scb->pthru_dma_addr; 722 723 return scb; 724 725 case READ_6: 726 case WRITE_6: 727 case READ_10: 728 case WRITE_10: 729 case READ_12: 730 case WRITE_12: 731 732 /* Allocate a SCB and initialize mailbox */ 733 if(!(scb = mega_allocate_scb(adapter, cmd))) { 734 *busy = 1; 735 return NULL; 736 } 737 mbox = (mbox_t *)scb->raw_mbox; 738 739 memset(mbox, 0, sizeof(scb->raw_mbox)); 740 mbox->m_out.logdrv = ldrv_num; 741 742 /* 743 * A little hack: 2nd bit is zero for all scsi read 744 * commands and is set for all scsi write commands 745 */ 746 if( adapter->has_64bit_addr ) { 747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 748 MEGA_MBOXCMD_LWRITE64: 749 MEGA_MBOXCMD_LREAD64 ; 750 } 751 else { 752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 753 MEGA_MBOXCMD_LWRITE: 754 MEGA_MBOXCMD_LREAD ; 755 } 756 757 /* 758 * 6-byte READ(0x08) or WRITE(0x0A) cdb 759 */ 760 if( cmd->cmd_len == 6 ) { 761 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 762 mbox->m_out.lba = 763 ((u32)cmd->cmnd[1] << 16) | 764 ((u32)cmd->cmnd[2] << 8) | 765 (u32)cmd->cmnd[3]; 766 767 mbox->m_out.lba &= 0x1FFFFF; 768 769 #if MEGA_HAVE_STATS 770 /* 771 * Take modulo 0x80, since the logical drive 772 * number increases by 0x80 when a logical 773 * drive was deleted 774 */ 775 if (*cmd->cmnd == READ_6) { 776 adapter->nreads[ldrv_num%0x80]++; 777 adapter->nreadblocks[ldrv_num%0x80] += 778 mbox->m_out.numsectors; 779 } else { 780 adapter->nwrites[ldrv_num%0x80]++; 781 adapter->nwriteblocks[ldrv_num%0x80] += 782 mbox->m_out.numsectors; 783 } 784 #endif 785 } 786 787 /* 788 * 10-byte READ(0x28) or WRITE(0x2A) cdb 789 */ 790 if( cmd->cmd_len == 10 ) { 791 mbox->m_out.numsectors = 792 (u32)cmd->cmnd[8] | 793 ((u32)cmd->cmnd[7] << 8); 794 mbox->m_out.lba = 795 ((u32)cmd->cmnd[2] << 24) | 796 ((u32)cmd->cmnd[3] << 16) | 797 ((u32)cmd->cmnd[4] << 8) | 798 (u32)cmd->cmnd[5]; 799 800 #if MEGA_HAVE_STATS 801 if (*cmd->cmnd == READ_10) { 802 adapter->nreads[ldrv_num%0x80]++; 803 adapter->nreadblocks[ldrv_num%0x80] += 804 mbox->m_out.numsectors; 805 } else { 806 adapter->nwrites[ldrv_num%0x80]++; 807 adapter->nwriteblocks[ldrv_num%0x80] += 808 mbox->m_out.numsectors; 809 } 810 #endif 811 } 812 813 /* 814 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 815 */ 816 if( cmd->cmd_len == 12 ) { 817 mbox->m_out.lba = 818 ((u32)cmd->cmnd[2] << 24) | 819 ((u32)cmd->cmnd[3] << 16) | 820 ((u32)cmd->cmnd[4] << 8) | 821 (u32)cmd->cmnd[5]; 822 823 mbox->m_out.numsectors = 824 ((u32)cmd->cmnd[6] << 24) | 825 ((u32)cmd->cmnd[7] << 16) | 826 ((u32)cmd->cmnd[8] << 8) | 827 (u32)cmd->cmnd[9]; 828 829 #if MEGA_HAVE_STATS 830 if (*cmd->cmnd == READ_12) { 831 adapter->nreads[ldrv_num%0x80]++; 832 adapter->nreadblocks[ldrv_num%0x80] += 833 mbox->m_out.numsectors; 834 } else { 835 adapter->nwrites[ldrv_num%0x80]++; 836 adapter->nwriteblocks[ldrv_num%0x80] += 837 mbox->m_out.numsectors; 838 } 839 #endif 840 } 841 842 /* 843 * If it is a read command 844 */ 845 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 846 scb->dma_direction = PCI_DMA_FROMDEVICE; 847 } 848 else { 849 scb->dma_direction = PCI_DMA_TODEVICE; 850 } 851 852 /* Calculate Scatter-Gather info */ 853 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 854 (u32 *)&mbox->m_out.xferaddr, &seg); 855 856 return scb; 857 858 #if MEGA_HAVE_CLUSTERING 859 case RESERVE: /* Fall through */ 860 case RELEASE: 861 862 /* 863 * Do we support clustering and is the support enabled 864 */ 865 if( ! adapter->has_cluster ) { 866 867 cmd->result = (DID_BAD_TARGET << 16); 868 cmd->scsi_done(cmd); 869 return NULL; 870 } 871 872 /* Allocate a SCB and initialize mailbox */ 873 if(!(scb = mega_allocate_scb(adapter, cmd))) { 874 *busy = 1; 875 return NULL; 876 } 877 878 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 879 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? 880 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 881 882 scb->raw_mbox[3] = ldrv_num; 883 884 scb->dma_direction = PCI_DMA_NONE; 885 886 return scb; 887 #endif 888 889 default: 890 cmd->result = (DID_BAD_TARGET << 16); 891 cmd->scsi_done(cmd); 892 return NULL; 893 } 894 } 895 896 /* 897 * Passthru drive commands 898 */ 899 else { 900 /* Allocate a SCB and initialize passthru */ 901 if(!(scb = mega_allocate_scb(adapter, cmd))) { 902 *busy = 1; 903 return NULL; 904 } 905 906 mbox = (mbox_t *)scb->raw_mbox; 907 memset(mbox, 0, sizeof(scb->raw_mbox)); 908 909 if( adapter->support_ext_cdb ) { 910 911 epthru = mega_prepare_extpassthru(adapter, scb, cmd, 912 channel, target); 913 914 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 915 916 mbox->m_out.xferaddr = scb->epthru_dma_addr; 917 918 } 919 else { 920 921 pthru = mega_prepare_passthru(adapter, scb, cmd, 922 channel, target); 923 924 /* Initialize mailbox */ 925 if( adapter->has_64bit_addr ) { 926 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 927 } 928 else { 929 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 930 } 931 932 mbox->m_out.xferaddr = scb->pthru_dma_addr; 933 934 } 935 return scb; 936 } 937 return NULL; 938 } 939 940 941 /** 942 * mega_prepare_passthru() 943 * @adapter - pointer to our soft state 944 * @scb - our scsi control block 945 * @cmd - scsi command from the mid-layer 946 * @channel - actual channel on the controller 947 * @target - actual id on the controller. 948 * 949 * prepare a command for the scsi physical devices. 950 */ 951 static mega_passthru * 952 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 953 int channel, int target) 954 { 955 mega_passthru *pthru; 956 957 pthru = scb->pthru; 958 memset(pthru, 0, sizeof (mega_passthru)); 959 960 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 961 pthru->timeout = 2; 962 963 pthru->ars = 1; 964 pthru->reqsenselen = 14; 965 pthru->islogical = 0; 966 967 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 968 969 pthru->target = (adapter->flag & BOARD_40LD) ? 970 (channel << 4) | target : target; 971 972 pthru->cdblen = cmd->cmd_len; 973 pthru->logdrv = cmd->device->lun; 974 975 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 976 977 /* Not sure about the direction */ 978 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 979 980 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 981 switch (cmd->cmnd[0]) { 982 case INQUIRY: 983 case READ_CAPACITY: 984 if(!(adapter->flag & (1L << cmd->device->channel))) { 985 986 printk(KERN_NOTICE 987 "scsi%d: scanning scsi channel %d [P%d] ", 988 adapter->host->host_no, 989 cmd->device->channel, channel); 990 printk("for physical devices.\n"); 991 992 adapter->flag |= (1L << cmd->device->channel); 993 } 994 /* Fall through */ 995 default: 996 pthru->numsgelements = mega_build_sglist(adapter, scb, 997 &pthru->dataxferaddr, &pthru->dataxferlen); 998 break; 999 } 1000 return pthru; 1001 } 1002 1003 1004 /** 1005 * mega_prepare_extpassthru() 1006 * @adapter - pointer to our soft state 1007 * @scb - our scsi control block 1008 * @cmd - scsi command from the mid-layer 1009 * @channel - actual channel on the controller 1010 * @target - actual id on the controller. 1011 * 1012 * prepare a command for the scsi physical devices. This rountine prepares 1013 * commands for devices which can take extended CDBs (>10 bytes) 1014 */ 1015 static mega_ext_passthru * 1016 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 1017 int channel, int target) 1018 { 1019 mega_ext_passthru *epthru; 1020 1021 epthru = scb->epthru; 1022 memset(epthru, 0, sizeof(mega_ext_passthru)); 1023 1024 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1025 epthru->timeout = 2; 1026 1027 epthru->ars = 1; 1028 epthru->reqsenselen = 14; 1029 epthru->islogical = 0; 1030 1031 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1032 epthru->target = (adapter->flag & BOARD_40LD) ? 1033 (channel << 4) | target : target; 1034 1035 epthru->cdblen = cmd->cmd_len; 1036 epthru->logdrv = cmd->device->lun; 1037 1038 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1039 1040 /* Not sure about the direction */ 1041 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 1042 1043 switch(cmd->cmnd[0]) { 1044 case INQUIRY: 1045 case READ_CAPACITY: 1046 if(!(adapter->flag & (1L << cmd->device->channel))) { 1047 1048 printk(KERN_NOTICE 1049 "scsi%d: scanning scsi channel %d [P%d] ", 1050 adapter->host->host_no, 1051 cmd->device->channel, channel); 1052 printk("for physical devices.\n"); 1053 1054 adapter->flag |= (1L << cmd->device->channel); 1055 } 1056 /* Fall through */ 1057 default: 1058 epthru->numsgelements = mega_build_sglist(adapter, scb, 1059 &epthru->dataxferaddr, &epthru->dataxferlen); 1060 break; 1061 } 1062 1063 return epthru; 1064 } 1065 1066 static void 1067 __mega_runpendq(adapter_t *adapter) 1068 { 1069 scb_t *scb; 1070 struct list_head *pos, *next; 1071 1072 /* Issue any pending commands to the card */ 1073 list_for_each_safe(pos, next, &adapter->pending_list) { 1074 1075 scb = list_entry(pos, scb_t, list); 1076 1077 if( !(scb->state & SCB_ISSUED) ) { 1078 1079 if( issue_scb(adapter, scb) != 0 ) 1080 return; 1081 } 1082 } 1083 1084 return; 1085 } 1086 1087 1088 /** 1089 * issue_scb() 1090 * @adapter - pointer to our soft state 1091 * @scb - scsi control block 1092 * 1093 * Post a command to the card if the mailbox is available, otherwise return 1094 * busy. We also take the scb from the pending list if the mailbox is 1095 * available. 1096 */ 1097 static int 1098 issue_scb(adapter_t *adapter, scb_t *scb) 1099 { 1100 volatile mbox64_t *mbox64 = adapter->mbox64; 1101 volatile mbox_t *mbox = adapter->mbox; 1102 unsigned int i = 0; 1103 1104 if(unlikely(mbox->m_in.busy)) { 1105 do { 1106 udelay(1); 1107 i++; 1108 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1109 1110 if(mbox->m_in.busy) return -1; 1111 } 1112 1113 /* Copy mailbox data into host structure */ 1114 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1115 sizeof(struct mbox_out)); 1116 1117 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1118 mbox->m_in.busy = 1; /* Set busy */ 1119 1120 1121 /* 1122 * Increment the pending queue counter 1123 */ 1124 atomic_inc(&adapter->pend_cmds); 1125 1126 switch (mbox->m_out.cmd) { 1127 case MEGA_MBOXCMD_LREAD64: 1128 case MEGA_MBOXCMD_LWRITE64: 1129 case MEGA_MBOXCMD_PASSTHRU64: 1130 case MEGA_MBOXCMD_EXTPTHRU: 1131 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1132 mbox64->xfer_segment_hi = 0; 1133 mbox->m_out.xferaddr = 0xFFFFFFFF; 1134 break; 1135 default: 1136 mbox64->xfer_segment_lo = 0; 1137 mbox64->xfer_segment_hi = 0; 1138 } 1139 1140 /* 1141 * post the command 1142 */ 1143 scb->state |= SCB_ISSUED; 1144 1145 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1146 mbox->m_in.poll = 0; 1147 mbox->m_in.ack = 0; 1148 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1149 } 1150 else { 1151 irq_enable(adapter); 1152 issue_command(adapter); 1153 } 1154 1155 return 0; 1156 } 1157 1158 /* 1159 * Wait until the controller's mailbox is available 1160 */ 1161 static inline int 1162 mega_busywait_mbox (adapter_t *adapter) 1163 { 1164 if (adapter->mbox->m_in.busy) 1165 return __mega_busywait_mbox(adapter); 1166 return 0; 1167 } 1168 1169 /** 1170 * issue_scb_block() 1171 * @adapter - pointer to our soft state 1172 * @raw_mbox - the mailbox 1173 * 1174 * Issue a scb in synchronous and non-interrupt mode 1175 */ 1176 static int 1177 issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1178 { 1179 volatile mbox64_t *mbox64 = adapter->mbox64; 1180 volatile mbox_t *mbox = adapter->mbox; 1181 u8 byte; 1182 1183 /* Wait until mailbox is free */ 1184 if(mega_busywait_mbox (adapter)) 1185 goto bug_blocked_mailbox; 1186 1187 /* Copy mailbox data into host structure */ 1188 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1189 mbox->m_out.cmdid = 0xFE; 1190 mbox->m_in.busy = 1; 1191 1192 switch (raw_mbox[0]) { 1193 case MEGA_MBOXCMD_LREAD64: 1194 case MEGA_MBOXCMD_LWRITE64: 1195 case MEGA_MBOXCMD_PASSTHRU64: 1196 case MEGA_MBOXCMD_EXTPTHRU: 1197 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1198 mbox64->xfer_segment_hi = 0; 1199 mbox->m_out.xferaddr = 0xFFFFFFFF; 1200 break; 1201 default: 1202 mbox64->xfer_segment_lo = 0; 1203 mbox64->xfer_segment_hi = 0; 1204 } 1205 1206 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1207 mbox->m_in.poll = 0; 1208 mbox->m_in.ack = 0; 1209 mbox->m_in.numstatus = 0xFF; 1210 mbox->m_in.status = 0xFF; 1211 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1212 1213 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1214 cpu_relax(); 1215 1216 mbox->m_in.numstatus = 0xFF; 1217 1218 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1219 cpu_relax(); 1220 1221 mbox->m_in.poll = 0; 1222 mbox->m_in.ack = 0x77; 1223 1224 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1225 1226 while(RDINDOOR(adapter) & 0x2) 1227 cpu_relax(); 1228 } 1229 else { 1230 irq_disable(adapter); 1231 issue_command(adapter); 1232 1233 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1234 cpu_relax(); 1235 1236 set_irq_state(adapter, byte); 1237 irq_enable(adapter); 1238 irq_ack(adapter); 1239 } 1240 1241 return mbox->m_in.status; 1242 1243 bug_blocked_mailbox: 1244 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n"); 1245 udelay (1000); 1246 return -1; 1247 } 1248 1249 1250 /** 1251 * megaraid_isr_iomapped() 1252 * @irq - irq 1253 * @devp - pointer to our soft state 1254 * 1255 * Interrupt service routine for io-mapped controllers. 1256 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1257 * and service the completed commands. 1258 */ 1259 static irqreturn_t 1260 megaraid_isr_iomapped(int irq, void *devp) 1261 { 1262 adapter_t *adapter = devp; 1263 unsigned long flags; 1264 u8 status; 1265 u8 nstatus; 1266 u8 completed[MAX_FIRMWARE_STATUS]; 1267 u8 byte; 1268 int handled = 0; 1269 1270 1271 /* 1272 * loop till F/W has more commands for us to complete. 1273 */ 1274 spin_lock_irqsave(&adapter->lock, flags); 1275 1276 do { 1277 /* Check if a valid interrupt is pending */ 1278 byte = irq_state(adapter); 1279 if( (byte & VALID_INTR_BYTE) == 0 ) { 1280 /* 1281 * No more pending commands 1282 */ 1283 goto out_unlock; 1284 } 1285 set_irq_state(adapter, byte); 1286 1287 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1288 == 0xFF) 1289 cpu_relax(); 1290 adapter->mbox->m_in.numstatus = 0xFF; 1291 1292 status = adapter->mbox->m_in.status; 1293 1294 /* 1295 * decrement the pending queue counter 1296 */ 1297 atomic_sub(nstatus, &adapter->pend_cmds); 1298 1299 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1300 nstatus); 1301 1302 /* Acknowledge interrupt */ 1303 irq_ack(adapter); 1304 1305 mega_cmd_done(adapter, completed, nstatus, status); 1306 1307 mega_rundoneq(adapter); 1308 1309 handled = 1; 1310 1311 /* Loop through any pending requests */ 1312 if(atomic_read(&adapter->quiescent) == 0) { 1313 mega_runpendq(adapter); 1314 } 1315 1316 } while(1); 1317 1318 out_unlock: 1319 1320 spin_unlock_irqrestore(&adapter->lock, flags); 1321 1322 return IRQ_RETVAL(handled); 1323 } 1324 1325 1326 /** 1327 * megaraid_isr_memmapped() 1328 * @irq - irq 1329 * @devp - pointer to our soft state 1330 * 1331 * Interrupt service routine for memory-mapped controllers. 1332 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1333 * and service the completed commands. 1334 */ 1335 static irqreturn_t 1336 megaraid_isr_memmapped(int irq, void *devp) 1337 { 1338 adapter_t *adapter = devp; 1339 unsigned long flags; 1340 u8 status; 1341 u32 dword = 0; 1342 u8 nstatus; 1343 u8 completed[MAX_FIRMWARE_STATUS]; 1344 int handled = 0; 1345 1346 1347 /* 1348 * loop till F/W has more commands for us to complete. 1349 */ 1350 spin_lock_irqsave(&adapter->lock, flags); 1351 1352 do { 1353 /* Check if a valid interrupt is pending */ 1354 dword = RDOUTDOOR(adapter); 1355 if(dword != 0x10001234) { 1356 /* 1357 * No more pending commands 1358 */ 1359 goto out_unlock; 1360 } 1361 WROUTDOOR(adapter, 0x10001234); 1362 1363 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1364 == 0xFF) { 1365 cpu_relax(); 1366 } 1367 adapter->mbox->m_in.numstatus = 0xFF; 1368 1369 status = adapter->mbox->m_in.status; 1370 1371 /* 1372 * decrement the pending queue counter 1373 */ 1374 atomic_sub(nstatus, &adapter->pend_cmds); 1375 1376 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1377 nstatus); 1378 1379 /* Acknowledge interrupt */ 1380 WRINDOOR(adapter, 0x2); 1381 1382 handled = 1; 1383 1384 while( RDINDOOR(adapter) & 0x02 ) 1385 cpu_relax(); 1386 1387 mega_cmd_done(adapter, completed, nstatus, status); 1388 1389 mega_rundoneq(adapter); 1390 1391 /* Loop through any pending requests */ 1392 if(atomic_read(&adapter->quiescent) == 0) { 1393 mega_runpendq(adapter); 1394 } 1395 1396 } while(1); 1397 1398 out_unlock: 1399 1400 spin_unlock_irqrestore(&adapter->lock, flags); 1401 1402 return IRQ_RETVAL(handled); 1403 } 1404 /** 1405 * mega_cmd_done() 1406 * @adapter - pointer to our soft state 1407 * @completed - array of ids of completed commands 1408 * @nstatus - number of completed commands 1409 * @status - status of the last command completed 1410 * 1411 * Complete the commands and call the scsi mid-layer callback hooks. 1412 */ 1413 static void 1414 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1415 { 1416 mega_ext_passthru *epthru = NULL; 1417 struct scatterlist *sgl; 1418 Scsi_Cmnd *cmd = NULL; 1419 mega_passthru *pthru = NULL; 1420 mbox_t *mbox = NULL; 1421 u8 c; 1422 scb_t *scb; 1423 int islogical; 1424 int cmdid; 1425 int i; 1426 1427 /* 1428 * for all the commands completed, call the mid-layer callback routine 1429 * and free the scb. 1430 */ 1431 for( i = 0; i < nstatus; i++ ) { 1432 1433 cmdid = completed[i]; 1434 1435 /* 1436 * Only free SCBs for the commands coming down from the 1437 * mid-layer, not for which were issued internally 1438 * 1439 * For internal command, restore the status returned by the 1440 * firmware so that user can interpret it. 1441 */ 1442 if (cmdid == CMDID_INT_CMDS) { 1443 scb = &adapter->int_scb; 1444 1445 list_del_init(&scb->list); 1446 scb->state = SCB_FREE; 1447 1448 adapter->int_status = status; 1449 complete(&adapter->int_waitq); 1450 } else { 1451 scb = &adapter->scb_list[cmdid]; 1452 1453 /* 1454 * Make sure f/w has completed a valid command 1455 */ 1456 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1457 printk(KERN_CRIT 1458 "megaraid: invalid command "); 1459 printk("Id %d, scb->state:%x, scsi cmd:%p\n", 1460 cmdid, scb->state, scb->cmd); 1461 1462 continue; 1463 } 1464 1465 /* 1466 * Was a abort issued for this command 1467 */ 1468 if( scb->state & SCB_ABORT ) { 1469 1470 printk(KERN_WARNING 1471 "megaraid: aborted cmd [%x] complete.\n", 1472 scb->idx); 1473 1474 scb->cmd->result = (DID_ABORT << 16); 1475 1476 list_add_tail(SCSI_LIST(scb->cmd), 1477 &adapter->completed_list); 1478 1479 mega_free_scb(adapter, scb); 1480 1481 continue; 1482 } 1483 1484 /* 1485 * Was a reset issued for this command 1486 */ 1487 if( scb->state & SCB_RESET ) { 1488 1489 printk(KERN_WARNING 1490 "megaraid: reset cmd [%x] complete.\n", 1491 scb->idx); 1492 1493 scb->cmd->result = (DID_RESET << 16); 1494 1495 list_add_tail(SCSI_LIST(scb->cmd), 1496 &adapter->completed_list); 1497 1498 mega_free_scb (adapter, scb); 1499 1500 continue; 1501 } 1502 1503 cmd = scb->cmd; 1504 pthru = scb->pthru; 1505 epthru = scb->epthru; 1506 mbox = (mbox_t *)scb->raw_mbox; 1507 1508 #if MEGA_HAVE_STATS 1509 { 1510 1511 int logdrv = mbox->m_out.logdrv; 1512 1513 islogical = adapter->logdrv_chan[cmd->channel]; 1514 /* 1515 * Maintain an error counter for the logical drive. 1516 * Some application like SNMP agent need such 1517 * statistics 1518 */ 1519 if( status && islogical && (cmd->cmnd[0] == READ_6 || 1520 cmd->cmnd[0] == READ_10 || 1521 cmd->cmnd[0] == READ_12)) { 1522 /* 1523 * Logical drive number increases by 0x80 when 1524 * a logical drive is deleted 1525 */ 1526 adapter->rd_errors[logdrv%0x80]++; 1527 } 1528 1529 if( status && islogical && (cmd->cmnd[0] == WRITE_6 || 1530 cmd->cmnd[0] == WRITE_10 || 1531 cmd->cmnd[0] == WRITE_12)) { 1532 /* 1533 * Logical drive number increases by 0x80 when 1534 * a logical drive is deleted 1535 */ 1536 adapter->wr_errors[logdrv%0x80]++; 1537 } 1538 1539 } 1540 #endif 1541 } 1542 1543 /* 1544 * Do not return the presence of hard disk on the channel so, 1545 * inquiry sent, and returned data==hard disk or removable 1546 * hard disk and not logical, request should return failure! - 1547 * PJ 1548 */ 1549 islogical = adapter->logdrv_chan[cmd->device->channel]; 1550 if( cmd->cmnd[0] == INQUIRY && !islogical ) { 1551 1552 sgl = scsi_sglist(cmd); 1553 if( sg_page(sgl) ) { 1554 c = *(unsigned char *) sg_virt(&sgl[0]); 1555 } else { 1556 printk(KERN_WARNING 1557 "megaraid: 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 printk(KERN_WARNING 1906 "megaraid: reservation reset failed.\n"); 1907 } 1908 else { 1909 printk(KERN_INFO "megaraid: reservation reset.\n"); 1910 } 1911 #endif 1912 1913 spin_lock_irq(&adapter->lock); 1914 1915 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 1916 1917 /* 1918 * This is required here to complete any completed requests 1919 * to be communicated over to the mid layer. 1920 */ 1921 mega_rundoneq(adapter); 1922 spin_unlock_irq(&adapter->lock); 1923 1924 return rval; 1925 } 1926 1927 /** 1928 * megaraid_abort_and_reset() 1929 * @adapter - megaraid soft state 1930 * @cmd - scsi command to be aborted or reset 1931 * @aor - abort or reset flag 1932 * 1933 * Try to locate the scsi command in the pending queue. If found and is not 1934 * issued to the controller, abort/reset it. Otherwise return failure 1935 */ 1936 static int 1937 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor) 1938 { 1939 struct list_head *pos, *next; 1940 scb_t *scb; 1941 1942 printk(KERN_WARNING "megaraid: %s cmd=%x <c=%d t=%d l=%d>\n", 1943 (aor == SCB_ABORT)? "ABORTING":"RESET", 1944 cmd->cmnd[0], cmd->device->channel, 1945 cmd->device->id, (u32)cmd->device->lun); 1946 1947 if(list_empty(&adapter->pending_list)) 1948 return FAILED; 1949 1950 list_for_each_safe(pos, next, &adapter->pending_list) { 1951 1952 scb = list_entry(pos, scb_t, list); 1953 1954 if (scb->cmd == cmd) { /* Found command */ 1955 1956 scb->state |= aor; 1957 1958 /* 1959 * Check if this command has firmware ownership. If 1960 * yes, we cannot reset this command. Whenever f/w 1961 * completes this command, we will return appropriate 1962 * status from ISR. 1963 */ 1964 if( scb->state & SCB_ISSUED ) { 1965 1966 printk(KERN_WARNING 1967 "megaraid: %s[%x], fw owner.\n", 1968 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1969 scb->idx); 1970 1971 return FAILED; 1972 } 1973 else { 1974 1975 /* 1976 * Not yet issued! Remove from the pending 1977 * list 1978 */ 1979 printk(KERN_WARNING 1980 "megaraid: %s-[%x], driver owner.\n", 1981 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1982 scb->idx); 1983 1984 mega_free_scb(adapter, scb); 1985 1986 if( aor == SCB_ABORT ) { 1987 cmd->result = (DID_ABORT << 16); 1988 } 1989 else { 1990 cmd->result = (DID_RESET << 16); 1991 } 1992 1993 list_add_tail(SCSI_LIST(cmd), 1994 &adapter->completed_list); 1995 1996 return SUCCESS; 1997 } 1998 } 1999 } 2000 2001 return FAILED; 2002 } 2003 2004 static inline int 2005 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2006 { 2007 *pdev = pci_alloc_dev(NULL); 2008 2009 if( *pdev == NULL ) return -1; 2010 2011 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2012 2013 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) { 2014 kfree(*pdev); 2015 return -1; 2016 } 2017 2018 return 0; 2019 } 2020 2021 static inline void 2022 free_local_pdev(struct pci_dev *pdev) 2023 { 2024 kfree(pdev); 2025 } 2026 2027 /** 2028 * mega_allocate_inquiry() 2029 * @dma_handle - handle returned for dma address 2030 * @pdev - handle to pci device 2031 * 2032 * allocates memory for inquiry structure 2033 */ 2034 static inline void * 2035 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2036 { 2037 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2038 } 2039 2040 2041 static inline void 2042 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2043 { 2044 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2045 } 2046 2047 2048 #ifdef CONFIG_PROC_FS 2049 /* Following code handles /proc fs */ 2050 2051 /** 2052 * proc_show_config() 2053 * @m - Synthetic file construction data 2054 * @v - File iterator 2055 * 2056 * Display configuration information about the controller. 2057 */ 2058 static int 2059 proc_show_config(struct seq_file *m, void *v) 2060 { 2061 2062 adapter_t *adapter = m->private; 2063 2064 seq_puts(m, MEGARAID_VERSION); 2065 if(adapter->product_info.product_name[0]) 2066 seq_printf(m, "%s\n", adapter->product_info.product_name); 2067 2068 seq_puts(m, "Controller Type: "); 2069 2070 if( adapter->flag & BOARD_MEMMAP ) 2071 seq_puts(m, "438/466/467/471/493/518/520/531/532\n"); 2072 else 2073 seq_puts(m, "418/428/434\n"); 2074 2075 if(adapter->flag & BOARD_40LD) 2076 seq_puts(m, "Controller Supports 40 Logical Drives\n"); 2077 2078 if(adapter->flag & BOARD_64BIT) 2079 seq_puts(m, "Controller capable of 64-bit memory addressing\n"); 2080 if( adapter->has_64bit_addr ) 2081 seq_puts(m, "Controller using 64-bit memory addressing\n"); 2082 else 2083 seq_puts(m, "Controller is not using 64-bit memory addressing\n"); 2084 2085 seq_printf(m, "Base = %08lx, Irq = %d, ", 2086 adapter->base, adapter->host->irq); 2087 2088 seq_printf(m, "Logical Drives = %d, Channels = %d\n", 2089 adapter->numldrv, adapter->product_info.nchannels); 2090 2091 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n", 2092 adapter->fw_version, adapter->bios_version, 2093 adapter->product_info.dram_size); 2094 2095 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2096 adapter->product_info.max_commands, adapter->max_cmds); 2097 2098 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb); 2099 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del); 2100 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); 2101 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv); 2102 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); 2103 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); 2104 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); 2105 seq_printf(m, "quiescent = %d\n", 2106 atomic_read(&adapter->quiescent)); 2107 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster); 2108 2109 seq_puts(m, "\nModule Parameters:\n"); 2110 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun); 2111 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io); 2112 return 0; 2113 } 2114 2115 /** 2116 * proc_show_stat() 2117 * @m - Synthetic file construction data 2118 * @v - File iterator 2119 * 2120 * Display statistical information about the I/O activity. 2121 */ 2122 static int 2123 proc_show_stat(struct seq_file *m, void *v) 2124 { 2125 adapter_t *adapter = m->private; 2126 #if MEGA_HAVE_STATS 2127 int i; 2128 #endif 2129 2130 seq_puts(m, "Statistical Information for this controller\n"); 2131 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); 2132 #if MEGA_HAVE_STATS 2133 for(i = 0; i < adapter->numldrv; i++) { 2134 seq_printf(m, "Logical Drive %d:\n", i); 2135 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n", 2136 adapter->nreads[i], adapter->nwrites[i]); 2137 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n", 2138 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2139 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n", 2140 adapter->rd_errors[i], adapter->wr_errors[i]); 2141 } 2142 #else 2143 seq_puts(m, "IO and error counters not compiled in driver.\n"); 2144 #endif 2145 return 0; 2146 } 2147 2148 2149 /** 2150 * proc_show_mbox() 2151 * @m - Synthetic file construction data 2152 * @v - File iterator 2153 * 2154 * Display mailbox information for the last command issued. This information 2155 * is good for debugging. 2156 */ 2157 static int 2158 proc_show_mbox(struct seq_file *m, void *v) 2159 { 2160 adapter_t *adapter = m->private; 2161 volatile mbox_t *mbox = adapter->mbox; 2162 2163 seq_puts(m, "Contents of Mail Box Structure\n"); 2164 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd); 2165 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid); 2166 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors); 2167 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba); 2168 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr); 2169 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv); 2170 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements); 2171 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy); 2172 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status); 2173 return 0; 2174 } 2175 2176 2177 /** 2178 * proc_show_rebuild_rate() 2179 * @m - Synthetic file construction data 2180 * @v - File iterator 2181 * 2182 * Display current rebuild rate 2183 */ 2184 static int 2185 proc_show_rebuild_rate(struct seq_file *m, void *v) 2186 { 2187 adapter_t *adapter = m->private; 2188 dma_addr_t dma_handle; 2189 caddr_t inquiry; 2190 struct pci_dev *pdev; 2191 2192 if( make_local_pdev(adapter, &pdev) != 0 ) 2193 return 0; 2194 2195 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2196 goto free_pdev; 2197 2198 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2199 seq_puts(m, "Adapter inquiry failed.\n"); 2200 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2201 goto free_inquiry; 2202 } 2203 2204 if( adapter->flag & BOARD_40LD ) 2205 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2206 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2207 else 2208 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2209 ((mraid_ext_inquiry *) 2210 inquiry)->raid_inq.adapter_info.rebuild_rate); 2211 2212 free_inquiry: 2213 mega_free_inquiry(inquiry, dma_handle, pdev); 2214 free_pdev: 2215 free_local_pdev(pdev); 2216 return 0; 2217 } 2218 2219 2220 /** 2221 * proc_show_battery() 2222 * @m - Synthetic file construction data 2223 * @v - File iterator 2224 * 2225 * Display information about the battery module on the controller. 2226 */ 2227 static int 2228 proc_show_battery(struct seq_file *m, void *v) 2229 { 2230 adapter_t *adapter = m->private; 2231 dma_addr_t dma_handle; 2232 caddr_t inquiry; 2233 struct pci_dev *pdev; 2234 u8 battery_status; 2235 2236 if( make_local_pdev(adapter, &pdev) != 0 ) 2237 return 0; 2238 2239 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2240 goto free_pdev; 2241 2242 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2243 seq_printf(m, "Adapter inquiry failed.\n"); 2244 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2245 goto free_inquiry; 2246 } 2247 2248 if( adapter->flag & BOARD_40LD ) { 2249 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2250 } 2251 else { 2252 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2253 raid_inq.adapter_info.battery_status; 2254 } 2255 2256 /* 2257 * Decode the battery status 2258 */ 2259 seq_printf(m, "Battery Status:[%d]", battery_status); 2260 2261 if(battery_status == MEGA_BATT_CHARGE_DONE) 2262 seq_puts(m, " Charge Done"); 2263 2264 if(battery_status & MEGA_BATT_MODULE_MISSING) 2265 seq_puts(m, " Module Missing"); 2266 2267 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2268 seq_puts(m, " Low Voltage"); 2269 2270 if(battery_status & MEGA_BATT_TEMP_HIGH) 2271 seq_puts(m, " Temperature High"); 2272 2273 if(battery_status & MEGA_BATT_PACK_MISSING) 2274 seq_puts(m, " Pack Missing"); 2275 2276 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2277 seq_puts(m, " Charge In-progress"); 2278 2279 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2280 seq_puts(m, " Charge Fail"); 2281 2282 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2283 seq_puts(m, " Cycles Exceeded"); 2284 2285 seq_putc(m, '\n'); 2286 2287 free_inquiry: 2288 mega_free_inquiry(inquiry, dma_handle, pdev); 2289 free_pdev: 2290 free_local_pdev(pdev); 2291 return 0; 2292 } 2293 2294 2295 /* 2296 * Display scsi inquiry 2297 */ 2298 static void 2299 mega_print_inquiry(struct seq_file *m, char *scsi_inq) 2300 { 2301 int i; 2302 2303 seq_puts(m, " Vendor: "); 2304 seq_write(m, scsi_inq + 8, 8); 2305 seq_puts(m, " Model: "); 2306 seq_write(m, scsi_inq + 16, 16); 2307 seq_puts(m, " Rev: "); 2308 seq_write(m, scsi_inq + 32, 4); 2309 seq_putc(m, '\n'); 2310 2311 i = scsi_inq[0] & 0x1f; 2312 seq_printf(m, " Type: %s ", scsi_device_type(i)); 2313 2314 seq_printf(m, " ANSI SCSI revision: %02x", 2315 scsi_inq[2] & 0x07); 2316 2317 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2318 seq_puts(m, " CCS\n"); 2319 else 2320 seq_putc(m, '\n'); 2321 } 2322 2323 /** 2324 * proc_show_pdrv() 2325 * @m - Synthetic file construction data 2326 * @page - buffer to write the data in 2327 * @adapter - pointer to our soft state 2328 * 2329 * Display information about the physical drives. 2330 */ 2331 static int 2332 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel) 2333 { 2334 dma_addr_t dma_handle; 2335 char *scsi_inq; 2336 dma_addr_t scsi_inq_dma_handle; 2337 caddr_t inquiry; 2338 struct pci_dev *pdev; 2339 u8 *pdrv_state; 2340 u8 state; 2341 int tgt; 2342 int max_channels; 2343 int i; 2344 2345 if( make_local_pdev(adapter, &pdev) != 0 ) 2346 return 0; 2347 2348 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2349 goto free_pdev; 2350 2351 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2352 seq_puts(m, "Adapter inquiry failed.\n"); 2353 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2354 goto free_inquiry; 2355 } 2356 2357 2358 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2359 if( scsi_inq == NULL ) { 2360 seq_puts(m, "memory not available for scsi inq.\n"); 2361 goto free_inquiry; 2362 } 2363 2364 if( adapter->flag & BOARD_40LD ) { 2365 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2366 } 2367 else { 2368 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2369 raid_inq.pdrv_info.pdrv_state; 2370 } 2371 2372 max_channels = adapter->product_info.nchannels; 2373 2374 if( channel >= max_channels ) { 2375 goto free_pci; 2376 } 2377 2378 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2379 2380 i = channel*16 + tgt; 2381 2382 state = *(pdrv_state + i); 2383 switch( state & 0x0F ) { 2384 case PDRV_ONLINE: 2385 seq_printf(m, "Channel:%2d Id:%2d State: Online", 2386 channel, tgt); 2387 break; 2388 2389 case PDRV_FAILED: 2390 seq_printf(m, "Channel:%2d Id:%2d State: Failed", 2391 channel, tgt); 2392 break; 2393 2394 case PDRV_RBLD: 2395 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild", 2396 channel, tgt); 2397 break; 2398 2399 case PDRV_HOTSPARE: 2400 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare", 2401 channel, tgt); 2402 break; 2403 2404 default: 2405 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured", 2406 channel, tgt); 2407 break; 2408 } 2409 2410 /* 2411 * This interface displays inquiries for disk drives 2412 * only. Inquries for logical drives and non-disk 2413 * devices are available through /proc/scsi/scsi 2414 */ 2415 memset(scsi_inq, 0, 256); 2416 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2417 scsi_inq_dma_handle) || 2418 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2419 continue; 2420 } 2421 2422 /* 2423 * Check for overflow. We print less than 240 2424 * characters for inquiry 2425 */ 2426 seq_puts(m, ".\n"); 2427 mega_print_inquiry(m, scsi_inq); 2428 } 2429 2430 free_pci: 2431 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2432 free_inquiry: 2433 mega_free_inquiry(inquiry, dma_handle, pdev); 2434 free_pdev: 2435 free_local_pdev(pdev); 2436 return 0; 2437 } 2438 2439 /** 2440 * proc_show_pdrv_ch0() 2441 * @m - Synthetic file construction data 2442 * @v - File iterator 2443 * 2444 * Display information about the physical drives on physical channel 0. 2445 */ 2446 static int 2447 proc_show_pdrv_ch0(struct seq_file *m, void *v) 2448 { 2449 return proc_show_pdrv(m, m->private, 0); 2450 } 2451 2452 2453 /** 2454 * proc_show_pdrv_ch1() 2455 * @m - Synthetic file construction data 2456 * @v - File iterator 2457 * 2458 * Display information about the physical drives on physical channel 1. 2459 */ 2460 static int 2461 proc_show_pdrv_ch1(struct seq_file *m, void *v) 2462 { 2463 return proc_show_pdrv(m, m->private, 1); 2464 } 2465 2466 2467 /** 2468 * proc_show_pdrv_ch2() 2469 * @m - Synthetic file construction data 2470 * @v - File iterator 2471 * 2472 * Display information about the physical drives on physical channel 2. 2473 */ 2474 static int 2475 proc_show_pdrv_ch2(struct seq_file *m, void *v) 2476 { 2477 return proc_show_pdrv(m, m->private, 2); 2478 } 2479 2480 2481 /** 2482 * proc_show_pdrv_ch3() 2483 * @m - Synthetic file construction data 2484 * @v - File iterator 2485 * 2486 * Display information about the physical drives on physical channel 3. 2487 */ 2488 static int 2489 proc_show_pdrv_ch3(struct seq_file *m, void *v) 2490 { 2491 return proc_show_pdrv(m, m->private, 3); 2492 } 2493 2494 2495 /** 2496 * proc_show_rdrv() 2497 * @m - Synthetic file construction data 2498 * @adapter - pointer to our soft state 2499 * @start - starting logical drive to display 2500 * @end - ending logical drive to display 2501 * 2502 * We do not print the inquiry information since its already available through 2503 * /proc/scsi/scsi interface 2504 */ 2505 static int 2506 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end ) 2507 { 2508 dma_addr_t dma_handle; 2509 logdrv_param *lparam; 2510 megacmd_t mc; 2511 char *disk_array; 2512 dma_addr_t disk_array_dma_handle; 2513 caddr_t inquiry; 2514 struct pci_dev *pdev; 2515 u8 *rdrv_state; 2516 int num_ldrv; 2517 u32 array_sz; 2518 int i; 2519 2520 if( make_local_pdev(adapter, &pdev) != 0 ) 2521 return 0; 2522 2523 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2524 goto free_pdev; 2525 2526 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2527 seq_puts(m, "Adapter inquiry failed.\n"); 2528 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2529 goto free_inquiry; 2530 } 2531 2532 memset(&mc, 0, sizeof(megacmd_t)); 2533 2534 if( adapter->flag & BOARD_40LD ) { 2535 array_sz = sizeof(disk_array_40ld); 2536 2537 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2538 2539 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2540 } 2541 else { 2542 array_sz = sizeof(disk_array_8ld); 2543 2544 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2545 raid_inq.logdrv_info.ldrv_state; 2546 2547 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2548 raid_inq.logdrv_info.num_ldrv; 2549 } 2550 2551 disk_array = pci_alloc_consistent(pdev, array_sz, 2552 &disk_array_dma_handle); 2553 2554 if( disk_array == NULL ) { 2555 seq_puts(m, "memory not available.\n"); 2556 goto free_inquiry; 2557 } 2558 2559 mc.xferaddr = (u32)disk_array_dma_handle; 2560 2561 if( adapter->flag & BOARD_40LD ) { 2562 mc.cmd = FC_NEW_CONFIG; 2563 mc.opcode = OP_DCMD_READ_CONFIG; 2564 2565 if( mega_internal_command(adapter, &mc, NULL) ) { 2566 seq_puts(m, "40LD read config failed.\n"); 2567 goto free_pci; 2568 } 2569 2570 } 2571 else { 2572 mc.cmd = NEW_READ_CONFIG_8LD; 2573 2574 if( mega_internal_command(adapter, &mc, NULL) ) { 2575 mc.cmd = READ_CONFIG_8LD; 2576 if( mega_internal_command(adapter, &mc, NULL) ) { 2577 seq_puts(m, "8LD read config failed.\n"); 2578 goto free_pci; 2579 } 2580 } 2581 } 2582 2583 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 2584 2585 if( adapter->flag & BOARD_40LD ) { 2586 lparam = 2587 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 2588 } 2589 else { 2590 lparam = 2591 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 2592 } 2593 2594 /* 2595 * Check for overflow. We print less than 240 characters for 2596 * information about each logical drive. 2597 */ 2598 seq_printf(m, "Logical drive:%2d:, ", i); 2599 2600 switch( rdrv_state[i] & 0x0F ) { 2601 case RDRV_OFFLINE: 2602 seq_puts(m, "state: offline"); 2603 break; 2604 case RDRV_DEGRADED: 2605 seq_puts(m, "state: degraded"); 2606 break; 2607 case RDRV_OPTIMAL: 2608 seq_puts(m, "state: optimal"); 2609 break; 2610 case RDRV_DELETED: 2611 seq_puts(m, "state: deleted"); 2612 break; 2613 default: 2614 seq_puts(m, "state: unknown"); 2615 break; 2616 } 2617 2618 /* 2619 * Check if check consistency or initialization is going on 2620 * for this logical drive. 2621 */ 2622 if( (rdrv_state[i] & 0xF0) == 0x20 ) 2623 seq_puts(m, ", check-consistency in progress"); 2624 else if( (rdrv_state[i] & 0xF0) == 0x10 ) 2625 seq_puts(m, ", initialization in progress"); 2626 2627 seq_putc(m, '\n'); 2628 2629 seq_printf(m, "Span depth:%3d, ", lparam->span_depth); 2630 seq_printf(m, "RAID level:%3d, ", lparam->level); 2631 seq_printf(m, "Stripe size:%3d, ", 2632 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 2633 seq_printf(m, "Row size:%3d\n", lparam->row_size); 2634 2635 seq_puts(m, "Read Policy: "); 2636 switch(lparam->read_ahead) { 2637 case NO_READ_AHEAD: 2638 seq_puts(m, "No read ahead, "); 2639 break; 2640 case READ_AHEAD: 2641 seq_puts(m, "Read ahead, "); 2642 break; 2643 case ADAP_READ_AHEAD: 2644 seq_puts(m, "Adaptive, "); 2645 break; 2646 2647 } 2648 2649 seq_puts(m, "Write Policy: "); 2650 switch(lparam->write_mode) { 2651 case WRMODE_WRITE_THRU: 2652 seq_puts(m, "Write thru, "); 2653 break; 2654 case WRMODE_WRITE_BACK: 2655 seq_puts(m, "Write back, "); 2656 break; 2657 } 2658 2659 seq_puts(m, "Cache Policy: "); 2660 switch(lparam->direct_io) { 2661 case CACHED_IO: 2662 seq_puts(m, "Cached IO\n\n"); 2663 break; 2664 case DIRECT_IO: 2665 seq_puts(m, "Direct IO\n\n"); 2666 break; 2667 } 2668 } 2669 2670 free_pci: 2671 pci_free_consistent(pdev, array_sz, disk_array, 2672 disk_array_dma_handle); 2673 free_inquiry: 2674 mega_free_inquiry(inquiry, dma_handle, pdev); 2675 free_pdev: 2676 free_local_pdev(pdev); 2677 return 0; 2678 } 2679 2680 /** 2681 * proc_show_rdrv_10() 2682 * @m - Synthetic file construction data 2683 * @v - File iterator 2684 * 2685 * Display real time information about the logical drives 0 through 9. 2686 */ 2687 static int 2688 proc_show_rdrv_10(struct seq_file *m, void *v) 2689 { 2690 return proc_show_rdrv(m, m->private, 0, 9); 2691 } 2692 2693 2694 /** 2695 * proc_show_rdrv_20() 2696 * @m - Synthetic file construction data 2697 * @v - File iterator 2698 * 2699 * Display real time information about the logical drives 0 through 9. 2700 */ 2701 static int 2702 proc_show_rdrv_20(struct seq_file *m, void *v) 2703 { 2704 return proc_show_rdrv(m, m->private, 10, 19); 2705 } 2706 2707 2708 /** 2709 * proc_show_rdrv_30() 2710 * @m - Synthetic file construction data 2711 * @v - File iterator 2712 * 2713 * Display real time information about the logical drives 0 through 9. 2714 */ 2715 static int 2716 proc_show_rdrv_30(struct seq_file *m, void *v) 2717 { 2718 return proc_show_rdrv(m, m->private, 20, 29); 2719 } 2720 2721 2722 /** 2723 * proc_show_rdrv_40() 2724 * @m - Synthetic file construction data 2725 * @v - File iterator 2726 * 2727 * Display real time information about the logical drives 0 through 9. 2728 */ 2729 static int 2730 proc_show_rdrv_40(struct seq_file *m, void *v) 2731 { 2732 return proc_show_rdrv(m, m->private, 30, 39); 2733 } 2734 2735 2736 /* 2737 * seq_file wrappers for procfile show routines. 2738 */ 2739 static int mega_proc_open(struct inode *inode, struct file *file) 2740 { 2741 adapter_t *adapter = proc_get_parent_data(inode); 2742 int (*show)(struct seq_file *, void *) = PDE_DATA(inode); 2743 2744 return single_open(file, show, adapter); 2745 } 2746 2747 static const struct file_operations mega_proc_fops = { 2748 .open = mega_proc_open, 2749 .read = seq_read, 2750 .llseek = seq_lseek, 2751 .release = single_release, 2752 }; 2753 2754 /* 2755 * Table of proc files we need to create. 2756 */ 2757 struct mega_proc_file { 2758 const char *name; 2759 unsigned short ptr_offset; 2760 int (*show) (struct seq_file *m, void *v); 2761 }; 2762 2763 static const struct mega_proc_file mega_proc_files[] = { 2764 { "config", offsetof(adapter_t, proc_read), proc_show_config }, 2765 { "stat", offsetof(adapter_t, proc_stat), proc_show_stat }, 2766 { "mailbox", offsetof(adapter_t, proc_mbox), proc_show_mbox }, 2767 #if MEGA_HAVE_ENH_PROC 2768 { "rebuild-rate", offsetof(adapter_t, proc_rr), proc_show_rebuild_rate }, 2769 { "battery-status", offsetof(adapter_t, proc_battery), proc_show_battery }, 2770 { "diskdrives-ch0", offsetof(adapter_t, proc_pdrvstat[0]), proc_show_pdrv_ch0 }, 2771 { "diskdrives-ch1", offsetof(adapter_t, proc_pdrvstat[1]), proc_show_pdrv_ch1 }, 2772 { "diskdrives-ch2", offsetof(adapter_t, proc_pdrvstat[2]), proc_show_pdrv_ch2 }, 2773 { "diskdrives-ch3", offsetof(adapter_t, proc_pdrvstat[3]), proc_show_pdrv_ch3 }, 2774 { "raiddrives-0-9", offsetof(adapter_t, proc_rdrvstat[0]), proc_show_rdrv_10 }, 2775 { "raiddrives-10-19", offsetof(adapter_t, proc_rdrvstat[1]), proc_show_rdrv_20 }, 2776 { "raiddrives-20-29", offsetof(adapter_t, proc_rdrvstat[2]), proc_show_rdrv_30 }, 2777 { "raiddrives-30-39", offsetof(adapter_t, proc_rdrvstat[3]), proc_show_rdrv_40 }, 2778 #endif 2779 { NULL } 2780 }; 2781 2782 /** 2783 * mega_create_proc_entry() 2784 * @index - index in soft state array 2785 * @parent - parent node for this /proc entry 2786 * 2787 * Creates /proc entries for our controllers. 2788 */ 2789 static void 2790 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2791 { 2792 const struct mega_proc_file *f; 2793 adapter_t *adapter = hba_soft_state[index]; 2794 struct proc_dir_entry *dir, *de, **ppde; 2795 u8 string[16]; 2796 2797 sprintf(string, "hba%d", adapter->host->host_no); 2798 2799 dir = adapter->controller_proc_dir_entry = 2800 proc_mkdir_data(string, 0, parent, adapter); 2801 if(!dir) { 2802 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n"); 2803 return; 2804 } 2805 2806 for (f = mega_proc_files; f->name; f++) { 2807 de = proc_create_data(f->name, S_IRUSR, dir, &mega_proc_fops, 2808 f->show); 2809 if (!de) { 2810 printk(KERN_WARNING "\nmegaraid: proc_create failed\n"); 2811 return; 2812 } 2813 2814 ppde = (void *)adapter + f->ptr_offset; 2815 *ppde = de; 2816 } 2817 } 2818 2819 #else 2820 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2821 { 2822 } 2823 #endif 2824 2825 2826 /** 2827 * megaraid_biosparam() 2828 * 2829 * Return the disk geometry for a particular disk 2830 */ 2831 static int 2832 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 2833 sector_t capacity, int geom[]) 2834 { 2835 adapter_t *adapter; 2836 unsigned char *bh; 2837 int heads; 2838 int sectors; 2839 int cylinders; 2840 int rval; 2841 2842 /* Get pointer to host config structure */ 2843 adapter = (adapter_t *)sdev->host->hostdata; 2844 2845 if (IS_RAID_CH(adapter, sdev->channel)) { 2846 /* Default heads (64) & sectors (32) */ 2847 heads = 64; 2848 sectors = 32; 2849 cylinders = (ulong)capacity / (heads * sectors); 2850 2851 /* 2852 * Handle extended translation size for logical drives 2853 * > 1Gb 2854 */ 2855 if ((ulong)capacity >= 0x200000) { 2856 heads = 255; 2857 sectors = 63; 2858 cylinders = (ulong)capacity / (heads * sectors); 2859 } 2860 2861 /* return result */ 2862 geom[0] = heads; 2863 geom[1] = sectors; 2864 geom[2] = cylinders; 2865 } 2866 else { 2867 bh = scsi_bios_ptable(bdev); 2868 2869 if( bh ) { 2870 rval = scsi_partsize(bh, capacity, 2871 &geom[2], &geom[0], &geom[1]); 2872 kfree(bh); 2873 if( rval != -1 ) 2874 return rval; 2875 } 2876 2877 printk(KERN_INFO 2878 "megaraid: invalid partition on this disk on channel %d\n", 2879 sdev->channel); 2880 2881 /* Default heads (64) & sectors (32) */ 2882 heads = 64; 2883 sectors = 32; 2884 cylinders = (ulong)capacity / (heads * sectors); 2885 2886 /* Handle extended translation size for logical drives > 1Gb */ 2887 if ((ulong)capacity >= 0x200000) { 2888 heads = 255; 2889 sectors = 63; 2890 cylinders = (ulong)capacity / (heads * sectors); 2891 } 2892 2893 /* return result */ 2894 geom[0] = heads; 2895 geom[1] = sectors; 2896 geom[2] = cylinders; 2897 } 2898 2899 return 0; 2900 } 2901 2902 /** 2903 * mega_init_scb() 2904 * @adapter - pointer to our soft state 2905 * 2906 * Allocate memory for the various pointers in the scb structures: 2907 * scatter-gather list pointer, passthru and extended passthru structure 2908 * pointers. 2909 */ 2910 static int 2911 mega_init_scb(adapter_t *adapter) 2912 { 2913 scb_t *scb; 2914 int i; 2915 2916 for( i = 0; i < adapter->max_cmds; i++ ) { 2917 2918 scb = &adapter->scb_list[i]; 2919 2920 scb->sgl64 = NULL; 2921 scb->sgl = NULL; 2922 scb->pthru = NULL; 2923 scb->epthru = NULL; 2924 } 2925 2926 for( i = 0; i < adapter->max_cmds; i++ ) { 2927 2928 scb = &adapter->scb_list[i]; 2929 2930 scb->idx = i; 2931 2932 scb->sgl64 = pci_alloc_consistent(adapter->dev, 2933 sizeof(mega_sgl64) * adapter->sglen, 2934 &scb->sgl_dma_addr); 2935 2936 scb->sgl = (mega_sglist *)scb->sgl64; 2937 2938 if( !scb->sgl ) { 2939 printk(KERN_WARNING "RAID: Can't allocate sglist.\n"); 2940 mega_free_sgl(adapter); 2941 return -1; 2942 } 2943 2944 scb->pthru = pci_alloc_consistent(adapter->dev, 2945 sizeof(mega_passthru), 2946 &scb->pthru_dma_addr); 2947 2948 if( !scb->pthru ) { 2949 printk(KERN_WARNING "RAID: Can't allocate passthru.\n"); 2950 mega_free_sgl(adapter); 2951 return -1; 2952 } 2953 2954 scb->epthru = pci_alloc_consistent(adapter->dev, 2955 sizeof(mega_ext_passthru), 2956 &scb->epthru_dma_addr); 2957 2958 if( !scb->epthru ) { 2959 printk(KERN_WARNING 2960 "Can't allocate extended passthru.\n"); 2961 mega_free_sgl(adapter); 2962 return -1; 2963 } 2964 2965 2966 scb->dma_type = MEGA_DMA_TYPE_NONE; 2967 2968 /* 2969 * Link to free list 2970 * lock not required since we are loading the driver, so no 2971 * commands possible right now. 2972 */ 2973 scb->state = SCB_FREE; 2974 scb->cmd = NULL; 2975 list_add(&scb->list, &adapter->free_list); 2976 } 2977 2978 return 0; 2979 } 2980 2981 2982 /** 2983 * megadev_open() 2984 * @inode - unused 2985 * @filep - unused 2986 * 2987 * Routines for the character/ioctl interface to the driver. Find out if this 2988 * is a valid open. 2989 */ 2990 static int 2991 megadev_open (struct inode *inode, struct file *filep) 2992 { 2993 /* 2994 * Only allow superuser to access private ioctl interface 2995 */ 2996 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 2997 2998 return 0; 2999 } 3000 3001 3002 /** 3003 * megadev_ioctl() 3004 * @inode - Our device inode 3005 * @filep - unused 3006 * @cmd - ioctl command 3007 * @arg - user buffer 3008 * 3009 * ioctl entry point for our private ioctl interface. We move the data in from 3010 * the user space, prepare the command (if necessary, convert the old MIMD 3011 * ioctl to new ioctl command), and issue a synchronous command to the 3012 * controller. 3013 */ 3014 static int 3015 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3016 { 3017 adapter_t *adapter; 3018 nitioctl_t uioc; 3019 int adapno; 3020 int rval; 3021 mega_passthru __user *upthru; /* user address for passthru */ 3022 mega_passthru *pthru; /* copy user passthru here */ 3023 dma_addr_t pthru_dma_hndl; 3024 void *data = NULL; /* data to be transferred */ 3025 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 3026 megacmd_t mc; 3027 megastat_t __user *ustats; 3028 int num_ldrv; 3029 u32 uxferaddr = 0; 3030 struct pci_dev *pdev; 3031 3032 ustats = NULL; /* avoid compilation warnings */ 3033 num_ldrv = 0; 3034 3035 /* 3036 * Make sure only USCSICMD are issued through this interface. 3037 * MIMD application would still fire different command. 3038 */ 3039 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 3040 return -EINVAL; 3041 } 3042 3043 /* 3044 * Check and convert a possible MIMD command to NIT command. 3045 * mega_m_to_n() copies the data from the user space, so we do not 3046 * have to do it here. 3047 * NOTE: We will need some user address to copyout the data, therefore 3048 * the inteface layer will also provide us with the required user 3049 * addresses. 3050 */ 3051 memset(&uioc, 0, sizeof(nitioctl_t)); 3052 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3053 return rval; 3054 3055 3056 switch( uioc.opcode ) { 3057 3058 case GET_DRIVER_VER: 3059 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3060 return (-EFAULT); 3061 3062 break; 3063 3064 case GET_N_ADAP: 3065 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3066 return (-EFAULT); 3067 3068 /* 3069 * Shucks. MIMD interface returns a positive value for number 3070 * of adapters. TODO: Change it to return 0 when there is no 3071 * applicatio using mimd interface. 3072 */ 3073 return hba_count; 3074 3075 case GET_ADAP_INFO: 3076 3077 /* 3078 * Which adapter 3079 */ 3080 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3081 return (-ENODEV); 3082 3083 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3084 sizeof(struct mcontroller)) ) 3085 return (-EFAULT); 3086 break; 3087 3088 #if MEGA_HAVE_STATS 3089 3090 case GET_STATS: 3091 /* 3092 * Which adapter 3093 */ 3094 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3095 return (-ENODEV); 3096 3097 adapter = hba_soft_state[adapno]; 3098 3099 ustats = uioc.uioc_uaddr; 3100 3101 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3102 return (-EFAULT); 3103 3104 /* 3105 * Check for the validity of the logical drive number 3106 */ 3107 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3108 3109 if( copy_to_user(ustats->nreads, adapter->nreads, 3110 num_ldrv*sizeof(u32)) ) 3111 return -EFAULT; 3112 3113 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3114 num_ldrv*sizeof(u32)) ) 3115 return -EFAULT; 3116 3117 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3118 num_ldrv*sizeof(u32)) ) 3119 return -EFAULT; 3120 3121 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3122 num_ldrv*sizeof(u32)) ) 3123 return -EFAULT; 3124 3125 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3126 num_ldrv*sizeof(u32)) ) 3127 return -EFAULT; 3128 3129 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3130 num_ldrv*sizeof(u32)) ) 3131 return -EFAULT; 3132 3133 return 0; 3134 3135 #endif 3136 case MBOX_CMD: 3137 3138 /* 3139 * Which adapter 3140 */ 3141 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3142 return (-ENODEV); 3143 3144 adapter = hba_soft_state[adapno]; 3145 3146 /* 3147 * Deletion of logical drive is a special case. The adapter 3148 * should be quiescent before this command is issued. 3149 */ 3150 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3151 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3152 3153 /* 3154 * Do we support this feature 3155 */ 3156 if( !adapter->support_random_del ) { 3157 printk(KERN_WARNING "megaraid: logdrv "); 3158 printk("delete on non-supporting F/W.\n"); 3159 3160 return (-EINVAL); 3161 } 3162 3163 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3164 3165 if( rval == 0 ) { 3166 memset(&mc, 0, sizeof(megacmd_t)); 3167 3168 mc.status = rval; 3169 3170 rval = mega_n_to_m((void __user *)arg, &mc); 3171 } 3172 3173 return rval; 3174 } 3175 /* 3176 * This interface only support the regular passthru commands. 3177 * Reject extended passthru and 64-bit passthru 3178 */ 3179 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3180 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3181 3182 printk(KERN_WARNING "megaraid: rejected passthru.\n"); 3183 3184 return (-EINVAL); 3185 } 3186 3187 /* 3188 * For all internal commands, the buffer must be allocated in 3189 * <4GB address range 3190 */ 3191 if( make_local_pdev(adapter, &pdev) != 0 ) 3192 return -EIO; 3193 3194 /* Is it a passthru command or a DCMD */ 3195 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3196 /* Passthru commands */ 3197 3198 pthru = pci_alloc_consistent(pdev, 3199 sizeof(mega_passthru), 3200 &pthru_dma_hndl); 3201 3202 if( pthru == NULL ) { 3203 free_local_pdev(pdev); 3204 return (-ENOMEM); 3205 } 3206 3207 /* 3208 * The user passthru structure 3209 */ 3210 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; 3211 3212 /* 3213 * Copy in the user passthru here. 3214 */ 3215 if( copy_from_user(pthru, upthru, 3216 sizeof(mega_passthru)) ) { 3217 3218 pci_free_consistent(pdev, 3219 sizeof(mega_passthru), pthru, 3220 pthru_dma_hndl); 3221 3222 free_local_pdev(pdev); 3223 3224 return (-EFAULT); 3225 } 3226 3227 /* 3228 * Is there a data transfer 3229 */ 3230 if( pthru->dataxferlen ) { 3231 data = pci_alloc_consistent(pdev, 3232 pthru->dataxferlen, 3233 &data_dma_hndl); 3234 3235 if( data == NULL ) { 3236 pci_free_consistent(pdev, 3237 sizeof(mega_passthru), 3238 pthru, 3239 pthru_dma_hndl); 3240 3241 free_local_pdev(pdev); 3242 3243 return (-ENOMEM); 3244 } 3245 3246 /* 3247 * Save the user address and point the kernel 3248 * address at just allocated memory 3249 */ 3250 uxferaddr = pthru->dataxferaddr; 3251 pthru->dataxferaddr = data_dma_hndl; 3252 } 3253 3254 3255 /* 3256 * Is data coming down-stream 3257 */ 3258 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3259 /* 3260 * Get the user data 3261 */ 3262 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3263 pthru->dataxferlen) ) { 3264 rval = (-EFAULT); 3265 goto freemem_and_return; 3266 } 3267 } 3268 3269 memset(&mc, 0, sizeof(megacmd_t)); 3270 3271 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3272 mc.xferaddr = (u32)pthru_dma_hndl; 3273 3274 /* 3275 * Issue the command 3276 */ 3277 mega_internal_command(adapter, &mc, pthru); 3278 3279 rval = mega_n_to_m((void __user *)arg, &mc); 3280 3281 if( rval ) goto freemem_and_return; 3282 3283 3284 /* 3285 * Is data going up-stream 3286 */ 3287 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3288 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3289 pthru->dataxferlen) ) { 3290 rval = (-EFAULT); 3291 } 3292 } 3293 3294 /* 3295 * Send the request sense data also, irrespective of 3296 * whether the user has asked for it or not. 3297 */ 3298 if (copy_to_user(upthru->reqsensearea, 3299 pthru->reqsensearea, 14)) 3300 rval = -EFAULT; 3301 3302 freemem_and_return: 3303 if( pthru->dataxferlen ) { 3304 pci_free_consistent(pdev, 3305 pthru->dataxferlen, data, 3306 data_dma_hndl); 3307 } 3308 3309 pci_free_consistent(pdev, sizeof(mega_passthru), 3310 pthru, pthru_dma_hndl); 3311 3312 free_local_pdev(pdev); 3313 3314 return rval; 3315 } 3316 else { 3317 /* DCMD commands */ 3318 3319 /* 3320 * Is there a data transfer 3321 */ 3322 if( uioc.xferlen ) { 3323 data = pci_alloc_consistent(pdev, 3324 uioc.xferlen, &data_dma_hndl); 3325 3326 if( data == NULL ) { 3327 free_local_pdev(pdev); 3328 return (-ENOMEM); 3329 } 3330 3331 uxferaddr = MBOX(uioc)->xferaddr; 3332 } 3333 3334 /* 3335 * Is data coming down-stream 3336 */ 3337 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3338 /* 3339 * Get the user data 3340 */ 3341 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3342 uioc.xferlen) ) { 3343 3344 pci_free_consistent(pdev, 3345 uioc.xferlen, 3346 data, data_dma_hndl); 3347 3348 free_local_pdev(pdev); 3349 3350 return (-EFAULT); 3351 } 3352 } 3353 3354 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3355 3356 mc.xferaddr = (u32)data_dma_hndl; 3357 3358 /* 3359 * Issue the command 3360 */ 3361 mega_internal_command(adapter, &mc, NULL); 3362 3363 rval = mega_n_to_m((void __user *)arg, &mc); 3364 3365 if( rval ) { 3366 if( uioc.xferlen ) { 3367 pci_free_consistent(pdev, 3368 uioc.xferlen, data, 3369 data_dma_hndl); 3370 } 3371 3372 free_local_pdev(pdev); 3373 3374 return rval; 3375 } 3376 3377 /* 3378 * Is data going up-stream 3379 */ 3380 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3381 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3382 uioc.xferlen) ) { 3383 3384 rval = (-EFAULT); 3385 } 3386 } 3387 3388 if( uioc.xferlen ) { 3389 pci_free_consistent(pdev, 3390 uioc.xferlen, data, 3391 data_dma_hndl); 3392 } 3393 3394 free_local_pdev(pdev); 3395 3396 return rval; 3397 } 3398 3399 default: 3400 return (-EINVAL); 3401 } 3402 3403 return 0; 3404 } 3405 3406 static long 3407 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3408 { 3409 int ret; 3410 3411 mutex_lock(&megadev_mutex); 3412 ret = megadev_ioctl(filep, cmd, arg); 3413 mutex_unlock(&megadev_mutex); 3414 3415 return ret; 3416 } 3417 3418 /** 3419 * mega_m_to_n() 3420 * @arg - user address 3421 * @uioc - new ioctl structure 3422 * 3423 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3424 * structure 3425 * 3426 * Converts the older mimd ioctl structure to newer NIT structure 3427 */ 3428 static int 3429 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3430 { 3431 struct uioctl_t uioc_mimd; 3432 char signature[8] = {0}; 3433 u8 opcode; 3434 u8 subopcode; 3435 3436 3437 /* 3438 * check is the application conforms to NIT. We do not have to do much 3439 * in that case. 3440 * We exploit the fact that the signature is stored in the very 3441 * beginning of the structure. 3442 */ 3443 3444 if( copy_from_user(signature, arg, 7) ) 3445 return (-EFAULT); 3446 3447 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3448 3449 /* 3450 * NOTE NOTE: The nit ioctl is still under flux because of 3451 * change of mailbox definition, in HPE. No applications yet 3452 * use this interface and let's not have applications use this 3453 * interface till the new specifitions are in place. 3454 */ 3455 return -EINVAL; 3456 #if 0 3457 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3458 return (-EFAULT); 3459 return 0; 3460 #endif 3461 } 3462 3463 /* 3464 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3465 * 3466 * Get the user ioctl structure 3467 */ 3468 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3469 return (-EFAULT); 3470 3471 3472 /* 3473 * Get the opcode and subopcode for the commands 3474 */ 3475 opcode = uioc_mimd.ui.fcs.opcode; 3476 subopcode = uioc_mimd.ui.fcs.subopcode; 3477 3478 switch (opcode) { 3479 case 0x82: 3480 3481 switch (subopcode) { 3482 3483 case MEGAIOC_QDRVRVER: /* Query driver version */ 3484 uioc->opcode = GET_DRIVER_VER; 3485 uioc->uioc_uaddr = uioc_mimd.data; 3486 break; 3487 3488 case MEGAIOC_QNADAP: /* Get # of adapters */ 3489 uioc->opcode = GET_N_ADAP; 3490 uioc->uioc_uaddr = uioc_mimd.data; 3491 break; 3492 3493 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3494 uioc->opcode = GET_ADAP_INFO; 3495 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3496 uioc->uioc_uaddr = uioc_mimd.data; 3497 break; 3498 3499 default: 3500 return(-EINVAL); 3501 } 3502 3503 break; 3504 3505 3506 case 0x81: 3507 3508 uioc->opcode = MBOX_CMD; 3509 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3510 3511 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3512 3513 uioc->xferlen = uioc_mimd.ui.fcs.length; 3514 3515 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3516 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3517 3518 break; 3519 3520 case 0x80: 3521 3522 uioc->opcode = MBOX_CMD; 3523 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3524 3525 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3526 3527 /* 3528 * Choose the xferlen bigger of input and output data 3529 */ 3530 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3531 uioc_mimd.outlen : uioc_mimd.inlen; 3532 3533 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3534 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3535 3536 break; 3537 3538 default: 3539 return (-EINVAL); 3540 3541 } 3542 3543 return 0; 3544 } 3545 3546 /* 3547 * mega_n_to_m() 3548 * @arg - user address 3549 * @mc - mailbox command 3550 * 3551 * Updates the status information to the application, depending on application 3552 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3553 */ 3554 static int 3555 mega_n_to_m(void __user *arg, megacmd_t *mc) 3556 { 3557 nitioctl_t __user *uiocp; 3558 megacmd_t __user *umc; 3559 mega_passthru __user *upthru; 3560 struct uioctl_t __user *uioc_mimd; 3561 char signature[8] = {0}; 3562 3563 /* 3564 * check is the application conforms to NIT. 3565 */ 3566 if( copy_from_user(signature, arg, 7) ) 3567 return -EFAULT; 3568 3569 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3570 3571 uiocp = arg; 3572 3573 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3574 return (-EFAULT); 3575 3576 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3577 3578 umc = MBOX_P(uiocp); 3579 3580 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3581 return -EFAULT; 3582 3583 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3584 return (-EFAULT); 3585 } 3586 } 3587 else { 3588 uioc_mimd = arg; 3589 3590 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3591 return (-EFAULT); 3592 3593 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3594 3595 umc = (megacmd_t __user *)uioc_mimd->mbox; 3596 3597 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3598 return (-EFAULT); 3599 3600 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3601 return (-EFAULT); 3602 } 3603 } 3604 3605 return 0; 3606 } 3607 3608 3609 /* 3610 * MEGARAID 'FW' commands. 3611 */ 3612 3613 /** 3614 * mega_is_bios_enabled() 3615 * @adapter - pointer to our soft state 3616 * 3617 * issue command to find out if the BIOS is enabled for this controller 3618 */ 3619 static int 3620 mega_is_bios_enabled(adapter_t *adapter) 3621 { 3622 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3623 mbox_t *mbox; 3624 int ret; 3625 3626 mbox = (mbox_t *)raw_mbox; 3627 3628 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3629 3630 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3631 3632 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3633 3634 raw_mbox[0] = IS_BIOS_ENABLED; 3635 raw_mbox[2] = GET_BIOS; 3636 3637 3638 ret = issue_scb_block(adapter, raw_mbox); 3639 3640 return *(char *)adapter->mega_buffer; 3641 } 3642 3643 3644 /** 3645 * mega_enum_raid_scsi() 3646 * @adapter - pointer to our soft state 3647 * 3648 * Find out what channels are RAID/SCSI. This information is used to 3649 * differentiate the virtual channels and physical channels and to support 3650 * ROMB feature and non-disk devices. 3651 */ 3652 static void 3653 mega_enum_raid_scsi(adapter_t *adapter) 3654 { 3655 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3656 mbox_t *mbox; 3657 int i; 3658 3659 mbox = (mbox_t *)raw_mbox; 3660 3661 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3662 3663 /* 3664 * issue command to find out what channels are raid/scsi 3665 */ 3666 raw_mbox[0] = CHNL_CLASS; 3667 raw_mbox[2] = GET_CHNL_CLASS; 3668 3669 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3670 3671 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3672 3673 /* 3674 * Non-ROMB firmware fail this command, so all channels 3675 * must be shown RAID 3676 */ 3677 adapter->mega_ch_class = 0xFF; 3678 3679 if(!issue_scb_block(adapter, raw_mbox)) { 3680 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 3681 3682 } 3683 3684 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3685 if( (adapter->mega_ch_class >> i) & 0x01 ) { 3686 printk(KERN_INFO "megaraid: channel[%d] is raid.\n", 3687 i); 3688 } 3689 else { 3690 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n", 3691 i); 3692 } 3693 } 3694 3695 return; 3696 } 3697 3698 3699 /** 3700 * mega_get_boot_drv() 3701 * @adapter - pointer to our soft state 3702 * 3703 * Find out which device is the boot device. Note, any logical drive or any 3704 * phyical device (e.g., a CDROM) can be designated as a boot device. 3705 */ 3706 static void 3707 mega_get_boot_drv(adapter_t *adapter) 3708 { 3709 struct private_bios_data *prv_bios_data; 3710 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3711 mbox_t *mbox; 3712 u16 cksum = 0; 3713 u8 *cksum_p; 3714 u8 boot_pdrv; 3715 int i; 3716 3717 mbox = (mbox_t *)raw_mbox; 3718 3719 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3720 3721 raw_mbox[0] = BIOS_PVT_DATA; 3722 raw_mbox[2] = GET_BIOS_PVT_DATA; 3723 3724 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3725 3726 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3727 3728 adapter->boot_ldrv_enabled = 0; 3729 adapter->boot_ldrv = 0; 3730 3731 adapter->boot_pdrv_enabled = 0; 3732 adapter->boot_pdrv_ch = 0; 3733 adapter->boot_pdrv_tgt = 0; 3734 3735 if(issue_scb_block(adapter, raw_mbox) == 0) { 3736 prv_bios_data = 3737 (struct private_bios_data *)adapter->mega_buffer; 3738 3739 cksum = 0; 3740 cksum_p = (char *)prv_bios_data; 3741 for (i = 0; i < 14; i++ ) { 3742 cksum += (u16)(*cksum_p++); 3743 } 3744 3745 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 3746 3747 /* 3748 * If MSB is set, a physical drive is set as boot 3749 * device 3750 */ 3751 if( prv_bios_data->boot_drv & 0x80 ) { 3752 adapter->boot_pdrv_enabled = 1; 3753 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 3754 adapter->boot_pdrv_ch = boot_pdrv / 16; 3755 adapter->boot_pdrv_tgt = boot_pdrv % 16; 3756 } 3757 else { 3758 adapter->boot_ldrv_enabled = 1; 3759 adapter->boot_ldrv = prv_bios_data->boot_drv; 3760 } 3761 } 3762 } 3763 3764 } 3765 3766 /** 3767 * mega_support_random_del() 3768 * @adapter - pointer to our soft state 3769 * 3770 * Find out if this controller supports random deletion and addition of 3771 * logical drives 3772 */ 3773 static int 3774 mega_support_random_del(adapter_t *adapter) 3775 { 3776 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3777 mbox_t *mbox; 3778 int rval; 3779 3780 mbox = (mbox_t *)raw_mbox; 3781 3782 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3783 3784 /* 3785 * issue command 3786 */ 3787 raw_mbox[0] = FC_DEL_LOGDRV; 3788 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 3789 3790 rval = issue_scb_block(adapter, raw_mbox); 3791 3792 return !rval; 3793 } 3794 3795 3796 /** 3797 * mega_support_ext_cdb() 3798 * @adapter - pointer to our soft state 3799 * 3800 * Find out if this firmware support cdblen > 10 3801 */ 3802 static int 3803 mega_support_ext_cdb(adapter_t *adapter) 3804 { 3805 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3806 mbox_t *mbox; 3807 int rval; 3808 3809 mbox = (mbox_t *)raw_mbox; 3810 3811 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3812 /* 3813 * issue command to find out if controller supports extended CDBs. 3814 */ 3815 raw_mbox[0] = 0xA4; 3816 raw_mbox[2] = 0x16; 3817 3818 rval = issue_scb_block(adapter, raw_mbox); 3819 3820 return !rval; 3821 } 3822 3823 3824 /** 3825 * mega_del_logdrv() 3826 * @adapter - pointer to our soft state 3827 * @logdrv - logical drive to be deleted 3828 * 3829 * Delete the specified logical drive. It is the responsibility of the user 3830 * app to let the OS know about this operation. 3831 */ 3832 static int 3833 mega_del_logdrv(adapter_t *adapter, int logdrv) 3834 { 3835 unsigned long flags; 3836 scb_t *scb; 3837 int rval; 3838 3839 /* 3840 * Stop sending commands to the controller, queue them internally. 3841 * When deletion is complete, ISR will flush the queue. 3842 */ 3843 atomic_set(&adapter->quiescent, 1); 3844 3845 /* 3846 * Wait till all the issued commands are complete and there are no 3847 * commands in the pending queue 3848 */ 3849 while (atomic_read(&adapter->pend_cmds) > 0 || 3850 !list_empty(&adapter->pending_list)) 3851 msleep(1000); /* sleep for 1s */ 3852 3853 rval = mega_do_del_logdrv(adapter, logdrv); 3854 3855 spin_lock_irqsave(&adapter->lock, flags); 3856 3857 /* 3858 * If delete operation was successful, add 0x80 to the logical drive 3859 * ids for commands in the pending queue. 3860 */ 3861 if (adapter->read_ldidmap) { 3862 struct list_head *pos; 3863 list_for_each(pos, &adapter->pending_list) { 3864 scb = list_entry(pos, scb_t, list); 3865 if (scb->pthru->logdrv < 0x80 ) 3866 scb->pthru->logdrv += 0x80; 3867 } 3868 } 3869 3870 atomic_set(&adapter->quiescent, 0); 3871 3872 mega_runpendq(adapter); 3873 3874 spin_unlock_irqrestore(&adapter->lock, flags); 3875 3876 return rval; 3877 } 3878 3879 3880 static int 3881 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 3882 { 3883 megacmd_t mc; 3884 int rval; 3885 3886 memset( &mc, 0, sizeof(megacmd_t)); 3887 3888 mc.cmd = FC_DEL_LOGDRV; 3889 mc.opcode = OP_DEL_LOGDRV; 3890 mc.subopcode = logdrv; 3891 3892 rval = mega_internal_command(adapter, &mc, NULL); 3893 3894 /* log this event */ 3895 if(rval) { 3896 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv); 3897 return rval; 3898 } 3899 3900 /* 3901 * After deleting first logical drive, the logical drives must be 3902 * addressed by adding 0x80 to the logical drive id. 3903 */ 3904 adapter->read_ldidmap = 1; 3905 3906 return rval; 3907 } 3908 3909 3910 /** 3911 * mega_get_max_sgl() 3912 * @adapter - pointer to our soft state 3913 * 3914 * Find out the maximum number of scatter-gather elements supported by this 3915 * version of the firmware 3916 */ 3917 static void 3918 mega_get_max_sgl(adapter_t *adapter) 3919 { 3920 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3921 mbox_t *mbox; 3922 3923 mbox = (mbox_t *)raw_mbox; 3924 3925 memset(mbox, 0, sizeof(raw_mbox)); 3926 3927 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3928 3929 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3930 3931 raw_mbox[0] = MAIN_MISC_OPCODE; 3932 raw_mbox[2] = GET_MAX_SG_SUPPORT; 3933 3934 3935 if( issue_scb_block(adapter, raw_mbox) ) { 3936 /* 3937 * f/w does not support this command. Choose the default value 3938 */ 3939 adapter->sglen = MIN_SGLIST; 3940 } 3941 else { 3942 adapter->sglen = *((char *)adapter->mega_buffer); 3943 3944 /* 3945 * Make sure this is not more than the resources we are 3946 * planning to allocate 3947 */ 3948 if ( adapter->sglen > MAX_SGLIST ) 3949 adapter->sglen = MAX_SGLIST; 3950 } 3951 3952 return; 3953 } 3954 3955 3956 /** 3957 * mega_support_cluster() 3958 * @adapter - pointer to our soft state 3959 * 3960 * Find out if this firmware support cluster calls. 3961 */ 3962 static int 3963 mega_support_cluster(adapter_t *adapter) 3964 { 3965 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3966 mbox_t *mbox; 3967 3968 mbox = (mbox_t *)raw_mbox; 3969 3970 memset(mbox, 0, sizeof(raw_mbox)); 3971 3972 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3973 3974 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3975 3976 /* 3977 * Try to get the initiator id. This command will succeed iff the 3978 * clustering is available on this HBA. 3979 */ 3980 raw_mbox[0] = MEGA_GET_TARGET_ID; 3981 3982 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 3983 3984 /* 3985 * Cluster support available. Get the initiator target id. 3986 * Tell our id to mid-layer too. 3987 */ 3988 adapter->this_id = *(u32 *)adapter->mega_buffer; 3989 adapter->host->this_id = adapter->this_id; 3990 3991 return 1; 3992 } 3993 3994 return 0; 3995 } 3996 3997 #ifdef CONFIG_PROC_FS 3998 /** 3999 * mega_adapinq() 4000 * @adapter - pointer to our soft state 4001 * @dma_handle - DMA address of the buffer 4002 * 4003 * Issue internal commands while interrupts are available. 4004 * We only issue direct mailbox commands from within the driver. ioctl() 4005 * interface using these routines can issue passthru commands. 4006 */ 4007 static int 4008 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 4009 { 4010 megacmd_t mc; 4011 4012 memset(&mc, 0, sizeof(megacmd_t)); 4013 4014 if( adapter->flag & BOARD_40LD ) { 4015 mc.cmd = FC_NEW_CONFIG; 4016 mc.opcode = NC_SUBOP_ENQUIRY3; 4017 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 4018 } 4019 else { 4020 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 4021 } 4022 4023 mc.xferaddr = (u32)dma_handle; 4024 4025 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 4026 return -1; 4027 } 4028 4029 return 0; 4030 } 4031 4032 4033 /** mega_internal_dev_inquiry() 4034 * @adapter - pointer to our soft state 4035 * @ch - channel for this device 4036 * @tgt - ID of this device 4037 * @buf_dma_handle - DMA address of the buffer 4038 * 4039 * Issue the scsi inquiry for the specified device. 4040 */ 4041 static int 4042 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4043 dma_addr_t buf_dma_handle) 4044 { 4045 mega_passthru *pthru; 4046 dma_addr_t pthru_dma_handle; 4047 megacmd_t mc; 4048 int rval; 4049 struct pci_dev *pdev; 4050 4051 4052 /* 4053 * For all internal commands, the buffer must be allocated in <4GB 4054 * address range 4055 */ 4056 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4057 4058 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4059 &pthru_dma_handle); 4060 4061 if( pthru == NULL ) { 4062 free_local_pdev(pdev); 4063 return -1; 4064 } 4065 4066 pthru->timeout = 2; 4067 pthru->ars = 1; 4068 pthru->reqsenselen = 14; 4069 pthru->islogical = 0; 4070 4071 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4072 4073 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4074 4075 pthru->cdblen = 6; 4076 4077 pthru->cdb[0] = INQUIRY; 4078 pthru->cdb[1] = 0; 4079 pthru->cdb[2] = 0; 4080 pthru->cdb[3] = 0; 4081 pthru->cdb[4] = 255; 4082 pthru->cdb[5] = 0; 4083 4084 4085 pthru->dataxferaddr = (u32)buf_dma_handle; 4086 pthru->dataxferlen = 256; 4087 4088 memset(&mc, 0, sizeof(megacmd_t)); 4089 4090 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4091 mc.xferaddr = (u32)pthru_dma_handle; 4092 4093 rval = mega_internal_command(adapter, &mc, pthru); 4094 4095 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4096 pthru_dma_handle); 4097 4098 free_local_pdev(pdev); 4099 4100 return rval; 4101 } 4102 #endif 4103 4104 /** 4105 * mega_internal_command() 4106 * @adapter - pointer to our soft state 4107 * @mc - the mailbox command 4108 * @pthru - Passthru structure for DCDB commands 4109 * 4110 * Issue the internal commands in interrupt mode. 4111 * The last argument is the address of the passthru structure if the command 4112 * to be fired is a passthru command 4113 * 4114 * Note: parameter 'pthru' is null for non-passthru commands. 4115 */ 4116 static int 4117 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4118 { 4119 unsigned long flags; 4120 scb_t *scb; 4121 int rval; 4122 4123 /* 4124 * The internal commands share one command id and hence are 4125 * serialized. This is so because we want to reserve maximum number of 4126 * available command ids for the I/O commands. 4127 */ 4128 mutex_lock(&adapter->int_mtx); 4129 4130 scb = &adapter->int_scb; 4131 memset(scb, 0, sizeof(scb_t)); 4132 4133 scb->idx = CMDID_INT_CMDS; 4134 scb->state |= SCB_ACTIVE | SCB_PENDQ; 4135 4136 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4137 4138 /* 4139 * Is it a passthru command 4140 */ 4141 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU) 4142 scb->pthru = pthru; 4143 4144 spin_lock_irqsave(&adapter->lock, flags); 4145 list_add_tail(&scb->list, &adapter->pending_list); 4146 /* 4147 * Check if the HBA is in quiescent state, e.g., during a 4148 * delete logical drive opertion. If it is, don't run 4149 * the pending_list. 4150 */ 4151 if (atomic_read(&adapter->quiescent) == 0) 4152 mega_runpendq(adapter); 4153 spin_unlock_irqrestore(&adapter->lock, flags); 4154 4155 wait_for_completion(&adapter->int_waitq); 4156 4157 mc->status = rval = adapter->int_status; 4158 4159 /* 4160 * Print a debug message for all failed commands. Applications can use 4161 * this information. 4162 */ 4163 if (rval && trace_level) { 4164 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", 4165 mc->cmd, mc->opcode, mc->subopcode, rval); 4166 } 4167 4168 mutex_unlock(&adapter->int_mtx); 4169 return rval; 4170 } 4171 4172 static struct scsi_host_template megaraid_template = { 4173 .module = THIS_MODULE, 4174 .name = "MegaRAID", 4175 .proc_name = "megaraid_legacy", 4176 .info = megaraid_info, 4177 .queuecommand = megaraid_queue, 4178 .bios_param = megaraid_biosparam, 4179 .max_sectors = MAX_SECTORS_PER_IO, 4180 .can_queue = MAX_COMMANDS, 4181 .this_id = DEFAULT_INITIATOR_ID, 4182 .sg_tablesize = MAX_SGLIST, 4183 .cmd_per_lun = DEF_CMD_PER_LUN, 4184 .use_clustering = ENABLE_CLUSTERING, 4185 .eh_abort_handler = megaraid_abort, 4186 .eh_device_reset_handler = megaraid_reset, 4187 .eh_bus_reset_handler = megaraid_reset, 4188 .eh_host_reset_handler = megaraid_reset, 4189 .no_write_same = 1, 4190 }; 4191 4192 static int 4193 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4194 { 4195 struct Scsi_Host *host; 4196 adapter_t *adapter; 4197 unsigned long mega_baseport, tbase, flag = 0; 4198 u16 subsysid, subsysvid; 4199 u8 pci_bus, pci_dev_func; 4200 int irq, i, j; 4201 int error = -ENODEV; 4202 4203 if (pci_enable_device(pdev)) 4204 goto out; 4205 pci_set_master(pdev); 4206 4207 pci_bus = pdev->bus->number; 4208 pci_dev_func = pdev->devfn; 4209 4210 /* 4211 * The megaraid3 stuff reports the ID of the Intel part which is not 4212 * remotely specific to the megaraid 4213 */ 4214 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4215 u16 magic; 4216 /* 4217 * Don't fall over the Compaq management cards using the same 4218 * PCI identifier 4219 */ 4220 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4221 pdev->subsystem_device == 0xC000) 4222 return -ENODEV; 4223 /* Now check the magic signature byte */ 4224 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4225 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4226 return -ENODEV; 4227 /* Ok it is probably a megaraid */ 4228 } 4229 4230 /* 4231 * For these vendor and device ids, signature offsets are not 4232 * valid and 64 bit is implicit 4233 */ 4234 if (id->driver_data & BOARD_64BIT) 4235 flag |= BOARD_64BIT; 4236 else { 4237 u32 magic64; 4238 4239 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4240 if (magic64 == HBA_SIGNATURE_64BIT) 4241 flag |= BOARD_64BIT; 4242 } 4243 4244 subsysvid = pdev->subsystem_vendor; 4245 subsysid = pdev->subsystem_device; 4246 4247 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:", 4248 id->vendor, id->device, pci_bus); 4249 4250 printk("slot %d:func %d\n", 4251 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func)); 4252 4253 /* Read the base port and IRQ from PCI */ 4254 mega_baseport = pci_resource_start(pdev, 0); 4255 irq = pdev->irq; 4256 4257 tbase = mega_baseport; 4258 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4259 flag |= BOARD_MEMMAP; 4260 4261 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4262 printk(KERN_WARNING "megaraid: mem region busy!\n"); 4263 goto out_disable_device; 4264 } 4265 4266 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4267 if (!mega_baseport) { 4268 printk(KERN_WARNING 4269 "megaraid: could not map hba memory\n"); 4270 goto out_release_region; 4271 } 4272 } else { 4273 flag |= BOARD_IOMAP; 4274 mega_baseport += 0x10; 4275 4276 if (!request_region(mega_baseport, 16, "megaraid")) 4277 goto out_disable_device; 4278 } 4279 4280 /* Initialize SCSI Host structure */ 4281 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4282 if (!host) 4283 goto out_iounmap; 4284 4285 adapter = (adapter_t *)host->hostdata; 4286 memset(adapter, 0, sizeof(adapter_t)); 4287 4288 printk(KERN_NOTICE 4289 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4290 host->host_no, mega_baseport, irq); 4291 4292 adapter->base = mega_baseport; 4293 if (flag & BOARD_MEMMAP) 4294 adapter->mmio_base = (void __iomem *) mega_baseport; 4295 4296 INIT_LIST_HEAD(&adapter->free_list); 4297 INIT_LIST_HEAD(&adapter->pending_list); 4298 INIT_LIST_HEAD(&adapter->completed_list); 4299 4300 adapter->flag = flag; 4301 spin_lock_init(&adapter->lock); 4302 4303 host->cmd_per_lun = max_cmd_per_lun; 4304 host->max_sectors = max_sectors_per_io; 4305 4306 adapter->dev = pdev; 4307 adapter->host = host; 4308 4309 adapter->host->irq = irq; 4310 4311 if (flag & BOARD_MEMMAP) 4312 adapter->host->base = tbase; 4313 else { 4314 adapter->host->io_port = tbase; 4315 adapter->host->n_io_port = 16; 4316 } 4317 4318 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4319 4320 /* 4321 * Allocate buffer to issue internal commands. 4322 */ 4323 adapter->mega_buffer = pci_alloc_consistent(adapter->dev, 4324 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); 4325 if (!adapter->mega_buffer) { 4326 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4327 goto out_host_put; 4328 } 4329 4330 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL); 4331 if (!adapter->scb_list) { 4332 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4333 goto out_free_cmd_buffer; 4334 } 4335 4336 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4337 megaraid_isr_memmapped : megaraid_isr_iomapped, 4338 IRQF_SHARED, "megaraid", adapter)) { 4339 printk(KERN_WARNING 4340 "megaraid: Couldn't register IRQ %d!\n", irq); 4341 goto out_free_scb_list; 4342 } 4343 4344 if (mega_setup_mailbox(adapter)) 4345 goto out_free_irq; 4346 4347 if (mega_query_adapter(adapter)) 4348 goto out_free_mbox; 4349 4350 /* 4351 * Have checks for some buggy f/w 4352 */ 4353 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4354 /* 4355 * Which firmware 4356 */ 4357 if (!strcmp(adapter->fw_version, "3.00") || 4358 !strcmp(adapter->fw_version, "3.01")) { 4359 4360 printk( KERN_WARNING 4361 "megaraid: Your card is a Dell PERC " 4362 "2/SC RAID controller with " 4363 "firmware\nmegaraid: 3.00 or 3.01. " 4364 "This driver is known to have " 4365 "corruption issues\nmegaraid: with " 4366 "those firmware versions on this " 4367 "specific card. In order\nmegaraid: " 4368 "to protect your data, please upgrade " 4369 "your firmware to version\nmegaraid: " 4370 "3.10 or later, available from the " 4371 "Dell Technical Support web\n" 4372 "megaraid: site at\nhttp://support." 4373 "dell.com/us/en/filelib/download/" 4374 "index.asp?fileid=2940\n" 4375 ); 4376 } 4377 } 4378 4379 /* 4380 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4381 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4382 * support, since this firmware cannot handle 64 bit 4383 * addressing 4384 */ 4385 if ((subsysvid == PCI_VENDOR_ID_HP) && 4386 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4387 /* 4388 * which firmware 4389 */ 4390 if (!strcmp(adapter->fw_version, "H01.07") || 4391 !strcmp(adapter->fw_version, "H01.08") || 4392 !strcmp(adapter->fw_version, "H01.09") ) { 4393 printk(KERN_WARNING 4394 "megaraid: Firmware H.01.07, " 4395 "H.01.08, and H.01.09 on 1M/2M " 4396 "controllers\n" 4397 "megaraid: do not support 64 bit " 4398 "addressing.\nmegaraid: DISABLING " 4399 "64 bit support.\n"); 4400 adapter->flag &= ~BOARD_64BIT; 4401 } 4402 } 4403 4404 if (mega_is_bios_enabled(adapter)) 4405 mega_hbas[hba_count].is_bios_enabled = 1; 4406 mega_hbas[hba_count].hostdata_addr = adapter; 4407 4408 /* 4409 * Find out which channel is raid and which is scsi. This is 4410 * for ROMB support. 4411 */ 4412 mega_enum_raid_scsi(adapter); 4413 4414 /* 4415 * Find out if a logical drive is set as the boot drive. If 4416 * there is one, will make that as the first logical drive. 4417 * ROMB: Do we have to boot from a physical drive. Then all 4418 * the physical drives would appear before the logical disks. 4419 * Else, all the physical drives would be exported to the mid 4420 * layer after logical drives. 4421 */ 4422 mega_get_boot_drv(adapter); 4423 4424 if (adapter->boot_pdrv_enabled) { 4425 j = adapter->product_info.nchannels; 4426 for( i = 0; i < j; i++ ) 4427 adapter->logdrv_chan[i] = 0; 4428 for( i = j; i < NVIRT_CHAN + j; i++ ) 4429 adapter->logdrv_chan[i] = 1; 4430 } else { 4431 for (i = 0; i < NVIRT_CHAN; i++) 4432 adapter->logdrv_chan[i] = 1; 4433 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4434 adapter->logdrv_chan[i] = 0; 4435 adapter->mega_ch_class <<= NVIRT_CHAN; 4436 } 4437 4438 /* 4439 * Do we support random deletion and addition of logical 4440 * drives 4441 */ 4442 adapter->read_ldidmap = 0; /* set it after first logdrv 4443 delete cmd */ 4444 adapter->support_random_del = mega_support_random_del(adapter); 4445 4446 /* Initialize SCBs */ 4447 if (mega_init_scb(adapter)) 4448 goto out_free_mbox; 4449 4450 /* 4451 * Reset the pending commands counter 4452 */ 4453 atomic_set(&adapter->pend_cmds, 0); 4454 4455 /* 4456 * Reset the adapter quiescent flag 4457 */ 4458 atomic_set(&adapter->quiescent, 0); 4459 4460 hba_soft_state[hba_count] = adapter; 4461 4462 /* 4463 * Fill in the structure which needs to be passed back to the 4464 * application when it does an ioctl() for controller related 4465 * information. 4466 */ 4467 i = hba_count; 4468 4469 mcontroller[i].base = mega_baseport; 4470 mcontroller[i].irq = irq; 4471 mcontroller[i].numldrv = adapter->numldrv; 4472 mcontroller[i].pcibus = pci_bus; 4473 mcontroller[i].pcidev = id->device; 4474 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4475 mcontroller[i].pciid = -1; 4476 mcontroller[i].pcivendor = id->vendor; 4477 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4478 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4479 4480 4481 /* Set the Mode of addressing to 64 bit if we can */ 4482 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4483 pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 4484 adapter->has_64bit_addr = 1; 4485 } else { 4486 pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 4487 adapter->has_64bit_addr = 0; 4488 } 4489 4490 mutex_init(&adapter->int_mtx); 4491 init_completion(&adapter->int_waitq); 4492 4493 adapter->this_id = DEFAULT_INITIATOR_ID; 4494 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4495 4496 #if MEGA_HAVE_CLUSTERING 4497 /* 4498 * Is cluster support enabled on this controller 4499 * Note: In a cluster the HBAs ( the initiators ) will have 4500 * different target IDs and we cannot assume it to be 7. Call 4501 * to mega_support_cluster() will get the target ids also if 4502 * the cluster support is available 4503 */ 4504 adapter->has_cluster = mega_support_cluster(adapter); 4505 if (adapter->has_cluster) { 4506 printk(KERN_NOTICE 4507 "megaraid: Cluster driver, initiator id:%d\n", 4508 adapter->this_id); 4509 } 4510 #endif 4511 4512 pci_set_drvdata(pdev, host); 4513 4514 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4515 4516 error = scsi_add_host(host, &pdev->dev); 4517 if (error) 4518 goto out_free_mbox; 4519 4520 scsi_scan_host(host); 4521 hba_count++; 4522 return 0; 4523 4524 out_free_mbox: 4525 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4526 adapter->una_mbox64, adapter->una_mbox64_dma); 4527 out_free_irq: 4528 free_irq(adapter->host->irq, adapter); 4529 out_free_scb_list: 4530 kfree(adapter->scb_list); 4531 out_free_cmd_buffer: 4532 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4533 adapter->mega_buffer, adapter->buf_dma_handle); 4534 out_host_put: 4535 scsi_host_put(host); 4536 out_iounmap: 4537 if (flag & BOARD_MEMMAP) 4538 iounmap((void *)mega_baseport); 4539 out_release_region: 4540 if (flag & BOARD_MEMMAP) 4541 release_mem_region(tbase, 128); 4542 else 4543 release_region(mega_baseport, 16); 4544 out_disable_device: 4545 pci_disable_device(pdev); 4546 out: 4547 return error; 4548 } 4549 4550 static void 4551 __megaraid_shutdown(adapter_t *adapter) 4552 { 4553 u_char raw_mbox[sizeof(struct mbox_out)]; 4554 mbox_t *mbox = (mbox_t *)raw_mbox; 4555 int i; 4556 4557 /* Flush adapter cache */ 4558 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4559 raw_mbox[0] = FLUSH_ADAPTER; 4560 4561 free_irq(adapter->host->irq, adapter); 4562 4563 /* Issue a blocking (interrupts disabled) command to the card */ 4564 issue_scb_block(adapter, raw_mbox); 4565 4566 /* Flush disks cache */ 4567 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4568 raw_mbox[0] = FLUSH_SYSTEM; 4569 4570 /* Issue a blocking (interrupts disabled) command to the card */ 4571 issue_scb_block(adapter, raw_mbox); 4572 4573 if (atomic_read(&adapter->pend_cmds) > 0) 4574 printk(KERN_WARNING "megaraid: pending commands!!\n"); 4575 4576 /* 4577 * Have a delibrate delay to make sure all the caches are 4578 * actually flushed. 4579 */ 4580 for (i = 0; i <= 10; i++) 4581 mdelay(1000); 4582 } 4583 4584 static void 4585 megaraid_remove_one(struct pci_dev *pdev) 4586 { 4587 struct Scsi_Host *host = pci_get_drvdata(pdev); 4588 adapter_t *adapter = (adapter_t *)host->hostdata; 4589 4590 scsi_remove_host(host); 4591 4592 __megaraid_shutdown(adapter); 4593 4594 /* Free our resources */ 4595 if (adapter->flag & BOARD_MEMMAP) { 4596 iounmap((void *)adapter->base); 4597 release_mem_region(adapter->host->base, 128); 4598 } else 4599 release_region(adapter->base, 16); 4600 4601 mega_free_sgl(adapter); 4602 4603 #ifdef CONFIG_PROC_FS 4604 if (adapter->controller_proc_dir_entry) { 4605 remove_proc_entry("stat", adapter->controller_proc_dir_entry); 4606 remove_proc_entry("config", 4607 adapter->controller_proc_dir_entry); 4608 remove_proc_entry("mailbox", 4609 adapter->controller_proc_dir_entry); 4610 #if MEGA_HAVE_ENH_PROC 4611 remove_proc_entry("rebuild-rate", 4612 adapter->controller_proc_dir_entry); 4613 remove_proc_entry("battery-status", 4614 adapter->controller_proc_dir_entry); 4615 4616 remove_proc_entry("diskdrives-ch0", 4617 adapter->controller_proc_dir_entry); 4618 remove_proc_entry("diskdrives-ch1", 4619 adapter->controller_proc_dir_entry); 4620 remove_proc_entry("diskdrives-ch2", 4621 adapter->controller_proc_dir_entry); 4622 remove_proc_entry("diskdrives-ch3", 4623 adapter->controller_proc_dir_entry); 4624 4625 remove_proc_entry("raiddrives-0-9", 4626 adapter->controller_proc_dir_entry); 4627 remove_proc_entry("raiddrives-10-19", 4628 adapter->controller_proc_dir_entry); 4629 remove_proc_entry("raiddrives-20-29", 4630 adapter->controller_proc_dir_entry); 4631 remove_proc_entry("raiddrives-30-39", 4632 adapter->controller_proc_dir_entry); 4633 #endif 4634 { 4635 char buf[12] = { 0 }; 4636 sprintf(buf, "hba%d", adapter->host->host_no); 4637 remove_proc_entry(buf, mega_proc_dir_entry); 4638 } 4639 } 4640 #endif 4641 4642 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4643 adapter->mega_buffer, adapter->buf_dma_handle); 4644 kfree(adapter->scb_list); 4645 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4646 adapter->una_mbox64, adapter->una_mbox64_dma); 4647 4648 scsi_host_put(host); 4649 pci_disable_device(pdev); 4650 4651 hba_count--; 4652 } 4653 4654 static void 4655 megaraid_shutdown(struct pci_dev *pdev) 4656 { 4657 struct Scsi_Host *host = pci_get_drvdata(pdev); 4658 adapter_t *adapter = (adapter_t *)host->hostdata; 4659 4660 __megaraid_shutdown(adapter); 4661 } 4662 4663 static struct pci_device_id megaraid_pci_tbl[] = { 4664 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 4665 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4666 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 4667 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4668 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 4669 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4670 {0,} 4671 }; 4672 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 4673 4674 static struct pci_driver megaraid_pci_driver = { 4675 .name = "megaraid_legacy", 4676 .id_table = megaraid_pci_tbl, 4677 .probe = megaraid_probe_one, 4678 .remove = megaraid_remove_one, 4679 .shutdown = megaraid_shutdown, 4680 }; 4681 4682 static int __init megaraid_init(void) 4683 { 4684 int error; 4685 4686 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 4687 max_cmd_per_lun = MAX_CMD_PER_LUN; 4688 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 4689 max_mbox_busy_wait = MBOX_BUSY_WAIT; 4690 4691 #ifdef CONFIG_PROC_FS 4692 mega_proc_dir_entry = proc_mkdir("megaraid", NULL); 4693 if (!mega_proc_dir_entry) { 4694 printk(KERN_WARNING 4695 "megaraid: failed to create megaraid root\n"); 4696 } 4697 #endif 4698 error = pci_register_driver(&megaraid_pci_driver); 4699 if (error) { 4700 #ifdef CONFIG_PROC_FS 4701 remove_proc_entry("megaraid", NULL); 4702 #endif 4703 return error; 4704 } 4705 4706 /* 4707 * Register the driver as a character device, for applications 4708 * to access it for ioctls. 4709 * First argument (major) to register_chrdev implies a dynamic 4710 * major number allocation. 4711 */ 4712 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 4713 if (!major) { 4714 printk(KERN_WARNING 4715 "megaraid: failed to register char device\n"); 4716 } 4717 4718 return 0; 4719 } 4720 4721 static void __exit megaraid_exit(void) 4722 { 4723 /* 4724 * Unregister the character device interface to the driver. 4725 */ 4726 unregister_chrdev(major, "megadev_legacy"); 4727 4728 pci_unregister_driver(&megaraid_pci_driver); 4729 4730 #ifdef CONFIG_PROC_FS 4731 remove_proc_entry("megaraid", NULL); 4732 #endif 4733 } 4734 4735 module_init(megaraid_init); 4736 module_exit(megaraid_exit); 4737 4738 /* vi: set ts=8 sw=8 tw=78: */ 4739