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 /* 536 * filter the internal and ioctl commands 537 */ 538 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) 539 return (scb_t *)cmd->host_scribble; 540 541 /* 542 * We know what channels our logical drives are on - mega_find_card() 543 */ 544 islogical = adapter->logdrv_chan[cmd->device->channel]; 545 546 /* 547 * The theory: If physical drive is chosen for boot, all the physical 548 * devices are exported before the logical drives, otherwise physical 549 * devices are pushed after logical drives, in which case - Kernel sees 550 * the physical devices on virtual channel which is obviously converted 551 * to actual channel on the HBA. 552 */ 553 if( adapter->boot_pdrv_enabled ) { 554 if( islogical ) { 555 /* logical channel */ 556 channel = cmd->device->channel - 557 adapter->product_info.nchannels; 558 } 559 else { 560 /* this is physical channel */ 561 channel = cmd->device->channel; 562 target = cmd->device->id; 563 564 /* 565 * boot from a physical disk, that disk needs to be 566 * exposed first IF both the channels are SCSI, then 567 * booting from the second channel is not allowed. 568 */ 569 if( target == 0 ) { 570 target = adapter->boot_pdrv_tgt; 571 } 572 else if( target == adapter->boot_pdrv_tgt ) { 573 target = 0; 574 } 575 } 576 } 577 else { 578 if( islogical ) { 579 /* this is the logical channel */ 580 channel = cmd->device->channel; 581 } 582 else { 583 /* physical channel */ 584 channel = cmd->device->channel - NVIRT_CHAN; 585 target = cmd->device->id; 586 } 587 } 588 589 590 if(islogical) { 591 592 /* have just LUN 0 for each target on virtual channels */ 593 if (cmd->device->lun) { 594 cmd->result = (DID_BAD_TARGET << 16); 595 cmd->scsi_done(cmd); 596 return NULL; 597 } 598 599 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 600 601 602 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 603 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 604 605 /* 606 * max_ldrv_num increases by 0x80 if some logical drive was 607 * deleted. 608 */ 609 if(adapter->read_ldidmap) 610 max_ldrv_num += 0x80; 611 612 if(ldrv_num > max_ldrv_num ) { 613 cmd->result = (DID_BAD_TARGET << 16); 614 cmd->scsi_done(cmd); 615 return NULL; 616 } 617 618 } 619 else { 620 if( cmd->device->lun > 7) { 621 /* 622 * Do not support lun >7 for physically accessed 623 * devices 624 */ 625 cmd->result = (DID_BAD_TARGET << 16); 626 cmd->scsi_done(cmd); 627 return NULL; 628 } 629 } 630 631 /* 632 * 633 * Logical drive commands 634 * 635 */ 636 if(islogical) { 637 switch (cmd->cmnd[0]) { 638 case TEST_UNIT_READY: 639 #if MEGA_HAVE_CLUSTERING 640 /* 641 * Do we support clustering and is the support enabled 642 * If no, return success always 643 */ 644 if( !adapter->has_cluster ) { 645 cmd->result = (DID_OK << 16); 646 cmd->scsi_done(cmd); 647 return NULL; 648 } 649 650 if(!(scb = mega_allocate_scb(adapter, cmd))) { 651 *busy = 1; 652 return NULL; 653 } 654 655 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 656 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 657 scb->raw_mbox[3] = ldrv_num; 658 659 scb->dma_direction = PCI_DMA_NONE; 660 661 return scb; 662 #else 663 cmd->result = (DID_OK << 16); 664 cmd->scsi_done(cmd); 665 return NULL; 666 #endif 667 668 case MODE_SENSE: { 669 char *buf; 670 struct scatterlist *sg; 671 672 sg = scsi_sglist(cmd); 673 buf = kmap_atomic(sg_page(sg)) + sg->offset; 674 675 memset(buf, 0, cmd->cmnd[4]); 676 kunmap_atomic(buf - sg->offset); 677 678 cmd->result = (DID_OK << 16); 679 cmd->scsi_done(cmd); 680 return NULL; 681 } 682 683 case READ_CAPACITY: 684 case INQUIRY: 685 686 if(!(adapter->flag & (1L << cmd->device->channel))) { 687 688 printk(KERN_NOTICE 689 "scsi%d: scanning scsi channel %d ", 690 adapter->host->host_no, 691 cmd->device->channel); 692 printk("for logical drives.\n"); 693 694 adapter->flag |= (1L << cmd->device->channel); 695 } 696 697 /* Allocate a SCB and initialize passthru */ 698 if(!(scb = mega_allocate_scb(adapter, cmd))) { 699 *busy = 1; 700 return NULL; 701 } 702 pthru = scb->pthru; 703 704 mbox = (mbox_t *)scb->raw_mbox; 705 memset(mbox, 0, sizeof(scb->raw_mbox)); 706 memset(pthru, 0, sizeof(mega_passthru)); 707 708 pthru->timeout = 0; 709 pthru->ars = 1; 710 pthru->reqsenselen = 14; 711 pthru->islogical = 1; 712 pthru->logdrv = ldrv_num; 713 pthru->cdblen = cmd->cmd_len; 714 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 715 716 if( adapter->has_64bit_addr ) { 717 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 718 } 719 else { 720 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 721 } 722 723 scb->dma_direction = PCI_DMA_FROMDEVICE; 724 725 pthru->numsgelements = mega_build_sglist(adapter, scb, 726 &pthru->dataxferaddr, &pthru->dataxferlen); 727 728 mbox->m_out.xferaddr = scb->pthru_dma_addr; 729 730 return scb; 731 732 case READ_6: 733 case WRITE_6: 734 case READ_10: 735 case WRITE_10: 736 case READ_12: 737 case WRITE_12: 738 739 /* Allocate a SCB and initialize mailbox */ 740 if(!(scb = mega_allocate_scb(adapter, cmd))) { 741 *busy = 1; 742 return NULL; 743 } 744 mbox = (mbox_t *)scb->raw_mbox; 745 746 memset(mbox, 0, sizeof(scb->raw_mbox)); 747 mbox->m_out.logdrv = ldrv_num; 748 749 /* 750 * A little hack: 2nd bit is zero for all scsi read 751 * commands and is set for all scsi write commands 752 */ 753 if( adapter->has_64bit_addr ) { 754 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 755 MEGA_MBOXCMD_LWRITE64: 756 MEGA_MBOXCMD_LREAD64 ; 757 } 758 else { 759 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 760 MEGA_MBOXCMD_LWRITE: 761 MEGA_MBOXCMD_LREAD ; 762 } 763 764 /* 765 * 6-byte READ(0x08) or WRITE(0x0A) cdb 766 */ 767 if( cmd->cmd_len == 6 ) { 768 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 769 mbox->m_out.lba = 770 ((u32)cmd->cmnd[1] << 16) | 771 ((u32)cmd->cmnd[2] << 8) | 772 (u32)cmd->cmnd[3]; 773 774 mbox->m_out.lba &= 0x1FFFFF; 775 776 #if MEGA_HAVE_STATS 777 /* 778 * Take modulo 0x80, since the logical drive 779 * number increases by 0x80 when a logical 780 * drive was deleted 781 */ 782 if (*cmd->cmnd == READ_6) { 783 adapter->nreads[ldrv_num%0x80]++; 784 adapter->nreadblocks[ldrv_num%0x80] += 785 mbox->m_out.numsectors; 786 } else { 787 adapter->nwrites[ldrv_num%0x80]++; 788 adapter->nwriteblocks[ldrv_num%0x80] += 789 mbox->m_out.numsectors; 790 } 791 #endif 792 } 793 794 /* 795 * 10-byte READ(0x28) or WRITE(0x2A) cdb 796 */ 797 if( cmd->cmd_len == 10 ) { 798 mbox->m_out.numsectors = 799 (u32)cmd->cmnd[8] | 800 ((u32)cmd->cmnd[7] << 8); 801 mbox->m_out.lba = 802 ((u32)cmd->cmnd[2] << 24) | 803 ((u32)cmd->cmnd[3] << 16) | 804 ((u32)cmd->cmnd[4] << 8) | 805 (u32)cmd->cmnd[5]; 806 807 #if MEGA_HAVE_STATS 808 if (*cmd->cmnd == READ_10) { 809 adapter->nreads[ldrv_num%0x80]++; 810 adapter->nreadblocks[ldrv_num%0x80] += 811 mbox->m_out.numsectors; 812 } else { 813 adapter->nwrites[ldrv_num%0x80]++; 814 adapter->nwriteblocks[ldrv_num%0x80] += 815 mbox->m_out.numsectors; 816 } 817 #endif 818 } 819 820 /* 821 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 822 */ 823 if( cmd->cmd_len == 12 ) { 824 mbox->m_out.lba = 825 ((u32)cmd->cmnd[2] << 24) | 826 ((u32)cmd->cmnd[3] << 16) | 827 ((u32)cmd->cmnd[4] << 8) | 828 (u32)cmd->cmnd[5]; 829 830 mbox->m_out.numsectors = 831 ((u32)cmd->cmnd[6] << 24) | 832 ((u32)cmd->cmnd[7] << 16) | 833 ((u32)cmd->cmnd[8] << 8) | 834 (u32)cmd->cmnd[9]; 835 836 #if MEGA_HAVE_STATS 837 if (*cmd->cmnd == READ_12) { 838 adapter->nreads[ldrv_num%0x80]++; 839 adapter->nreadblocks[ldrv_num%0x80] += 840 mbox->m_out.numsectors; 841 } else { 842 adapter->nwrites[ldrv_num%0x80]++; 843 adapter->nwriteblocks[ldrv_num%0x80] += 844 mbox->m_out.numsectors; 845 } 846 #endif 847 } 848 849 /* 850 * If it is a read command 851 */ 852 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 853 scb->dma_direction = PCI_DMA_FROMDEVICE; 854 } 855 else { 856 scb->dma_direction = PCI_DMA_TODEVICE; 857 } 858 859 /* Calculate Scatter-Gather info */ 860 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 861 (u32 *)&mbox->m_out.xferaddr, &seg); 862 863 return scb; 864 865 #if MEGA_HAVE_CLUSTERING 866 case RESERVE: /* Fall through */ 867 case RELEASE: 868 869 /* 870 * Do we support clustering and is the support enabled 871 */ 872 if( ! adapter->has_cluster ) { 873 874 cmd->result = (DID_BAD_TARGET << 16); 875 cmd->scsi_done(cmd); 876 return NULL; 877 } 878 879 /* Allocate a SCB and initialize mailbox */ 880 if(!(scb = mega_allocate_scb(adapter, cmd))) { 881 *busy = 1; 882 return NULL; 883 } 884 885 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 886 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? 887 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 888 889 scb->raw_mbox[3] = ldrv_num; 890 891 scb->dma_direction = PCI_DMA_NONE; 892 893 return scb; 894 #endif 895 896 default: 897 cmd->result = (DID_BAD_TARGET << 16); 898 cmd->scsi_done(cmd); 899 return NULL; 900 } 901 } 902 903 /* 904 * Passthru drive commands 905 */ 906 else { 907 /* Allocate a SCB and initialize passthru */ 908 if(!(scb = mega_allocate_scb(adapter, cmd))) { 909 *busy = 1; 910 return NULL; 911 } 912 913 mbox = (mbox_t *)scb->raw_mbox; 914 memset(mbox, 0, sizeof(scb->raw_mbox)); 915 916 if( adapter->support_ext_cdb ) { 917 918 epthru = mega_prepare_extpassthru(adapter, scb, cmd, 919 channel, target); 920 921 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 922 923 mbox->m_out.xferaddr = scb->epthru_dma_addr; 924 925 } 926 else { 927 928 pthru = mega_prepare_passthru(adapter, scb, cmd, 929 channel, target); 930 931 /* Initialize mailbox */ 932 if( adapter->has_64bit_addr ) { 933 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 934 } 935 else { 936 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 937 } 938 939 mbox->m_out.xferaddr = scb->pthru_dma_addr; 940 941 } 942 return scb; 943 } 944 return NULL; 945 } 946 947 948 /** 949 * mega_prepare_passthru() 950 * @adapter - pointer to our soft state 951 * @scb - our scsi control block 952 * @cmd - scsi command from the mid-layer 953 * @channel - actual channel on the controller 954 * @target - actual id on the controller. 955 * 956 * prepare a command for the scsi physical devices. 957 */ 958 static mega_passthru * 959 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 960 int channel, int target) 961 { 962 mega_passthru *pthru; 963 964 pthru = scb->pthru; 965 memset(pthru, 0, sizeof (mega_passthru)); 966 967 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 968 pthru->timeout = 2; 969 970 pthru->ars = 1; 971 pthru->reqsenselen = 14; 972 pthru->islogical = 0; 973 974 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 975 976 pthru->target = (adapter->flag & BOARD_40LD) ? 977 (channel << 4) | target : target; 978 979 pthru->cdblen = cmd->cmd_len; 980 pthru->logdrv = cmd->device->lun; 981 982 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 983 984 /* Not sure about the direction */ 985 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 986 987 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 988 switch (cmd->cmnd[0]) { 989 case INQUIRY: 990 case READ_CAPACITY: 991 if(!(adapter->flag & (1L << cmd->device->channel))) { 992 993 printk(KERN_NOTICE 994 "scsi%d: scanning scsi channel %d [P%d] ", 995 adapter->host->host_no, 996 cmd->device->channel, channel); 997 printk("for physical devices.\n"); 998 999 adapter->flag |= (1L << cmd->device->channel); 1000 } 1001 /* Fall through */ 1002 default: 1003 pthru->numsgelements = mega_build_sglist(adapter, scb, 1004 &pthru->dataxferaddr, &pthru->dataxferlen); 1005 break; 1006 } 1007 return pthru; 1008 } 1009 1010 1011 /** 1012 * mega_prepare_extpassthru() 1013 * @adapter - pointer to our soft state 1014 * @scb - our scsi control block 1015 * @cmd - scsi command from the mid-layer 1016 * @channel - actual channel on the controller 1017 * @target - actual id on the controller. 1018 * 1019 * prepare a command for the scsi physical devices. This rountine prepares 1020 * commands for devices which can take extended CDBs (>10 bytes) 1021 */ 1022 static mega_ext_passthru * 1023 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 1024 int channel, int target) 1025 { 1026 mega_ext_passthru *epthru; 1027 1028 epthru = scb->epthru; 1029 memset(epthru, 0, sizeof(mega_ext_passthru)); 1030 1031 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1032 epthru->timeout = 2; 1033 1034 epthru->ars = 1; 1035 epthru->reqsenselen = 14; 1036 epthru->islogical = 0; 1037 1038 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1039 epthru->target = (adapter->flag & BOARD_40LD) ? 1040 (channel << 4) | target : target; 1041 1042 epthru->cdblen = cmd->cmd_len; 1043 epthru->logdrv = cmd->device->lun; 1044 1045 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1046 1047 /* Not sure about the direction */ 1048 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 1049 1050 switch(cmd->cmnd[0]) { 1051 case INQUIRY: 1052 case READ_CAPACITY: 1053 if(!(adapter->flag & (1L << cmd->device->channel))) { 1054 1055 printk(KERN_NOTICE 1056 "scsi%d: scanning scsi channel %d [P%d] ", 1057 adapter->host->host_no, 1058 cmd->device->channel, channel); 1059 printk("for physical devices.\n"); 1060 1061 adapter->flag |= (1L << cmd->device->channel); 1062 } 1063 /* Fall through */ 1064 default: 1065 epthru->numsgelements = mega_build_sglist(adapter, scb, 1066 &epthru->dataxferaddr, &epthru->dataxferlen); 1067 break; 1068 } 1069 1070 return epthru; 1071 } 1072 1073 static void 1074 __mega_runpendq(adapter_t *adapter) 1075 { 1076 scb_t *scb; 1077 struct list_head *pos, *next; 1078 1079 /* Issue any pending commands to the card */ 1080 list_for_each_safe(pos, next, &adapter->pending_list) { 1081 1082 scb = list_entry(pos, scb_t, list); 1083 1084 if( !(scb->state & SCB_ISSUED) ) { 1085 1086 if( issue_scb(adapter, scb) != 0 ) 1087 return; 1088 } 1089 } 1090 1091 return; 1092 } 1093 1094 1095 /** 1096 * issue_scb() 1097 * @adapter - pointer to our soft state 1098 * @scb - scsi control block 1099 * 1100 * Post a command to the card if the mailbox is available, otherwise return 1101 * busy. We also take the scb from the pending list if the mailbox is 1102 * available. 1103 */ 1104 static int 1105 issue_scb(adapter_t *adapter, scb_t *scb) 1106 { 1107 volatile mbox64_t *mbox64 = adapter->mbox64; 1108 volatile mbox_t *mbox = adapter->mbox; 1109 unsigned int i = 0; 1110 1111 if(unlikely(mbox->m_in.busy)) { 1112 do { 1113 udelay(1); 1114 i++; 1115 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1116 1117 if(mbox->m_in.busy) return -1; 1118 } 1119 1120 /* Copy mailbox data into host structure */ 1121 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1122 sizeof(struct mbox_out)); 1123 1124 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1125 mbox->m_in.busy = 1; /* Set busy */ 1126 1127 1128 /* 1129 * Increment the pending queue counter 1130 */ 1131 atomic_inc(&adapter->pend_cmds); 1132 1133 switch (mbox->m_out.cmd) { 1134 case MEGA_MBOXCMD_LREAD64: 1135 case MEGA_MBOXCMD_LWRITE64: 1136 case MEGA_MBOXCMD_PASSTHRU64: 1137 case MEGA_MBOXCMD_EXTPTHRU: 1138 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1139 mbox64->xfer_segment_hi = 0; 1140 mbox->m_out.xferaddr = 0xFFFFFFFF; 1141 break; 1142 default: 1143 mbox64->xfer_segment_lo = 0; 1144 mbox64->xfer_segment_hi = 0; 1145 } 1146 1147 /* 1148 * post the command 1149 */ 1150 scb->state |= SCB_ISSUED; 1151 1152 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1153 mbox->m_in.poll = 0; 1154 mbox->m_in.ack = 0; 1155 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1156 } 1157 else { 1158 irq_enable(adapter); 1159 issue_command(adapter); 1160 } 1161 1162 return 0; 1163 } 1164 1165 /* 1166 * Wait until the controller's mailbox is available 1167 */ 1168 static inline int 1169 mega_busywait_mbox (adapter_t *adapter) 1170 { 1171 if (adapter->mbox->m_in.busy) 1172 return __mega_busywait_mbox(adapter); 1173 return 0; 1174 } 1175 1176 /** 1177 * issue_scb_block() 1178 * @adapter - pointer to our soft state 1179 * @raw_mbox - the mailbox 1180 * 1181 * Issue a scb in synchronous and non-interrupt mode 1182 */ 1183 static int 1184 issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1185 { 1186 volatile mbox64_t *mbox64 = adapter->mbox64; 1187 volatile mbox_t *mbox = adapter->mbox; 1188 u8 byte; 1189 1190 /* Wait until mailbox is free */ 1191 if(mega_busywait_mbox (adapter)) 1192 goto bug_blocked_mailbox; 1193 1194 /* Copy mailbox data into host structure */ 1195 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1196 mbox->m_out.cmdid = 0xFE; 1197 mbox->m_in.busy = 1; 1198 1199 switch (raw_mbox[0]) { 1200 case MEGA_MBOXCMD_LREAD64: 1201 case MEGA_MBOXCMD_LWRITE64: 1202 case MEGA_MBOXCMD_PASSTHRU64: 1203 case MEGA_MBOXCMD_EXTPTHRU: 1204 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1205 mbox64->xfer_segment_hi = 0; 1206 mbox->m_out.xferaddr = 0xFFFFFFFF; 1207 break; 1208 default: 1209 mbox64->xfer_segment_lo = 0; 1210 mbox64->xfer_segment_hi = 0; 1211 } 1212 1213 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1214 mbox->m_in.poll = 0; 1215 mbox->m_in.ack = 0; 1216 mbox->m_in.numstatus = 0xFF; 1217 mbox->m_in.status = 0xFF; 1218 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1219 1220 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1221 cpu_relax(); 1222 1223 mbox->m_in.numstatus = 0xFF; 1224 1225 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1226 cpu_relax(); 1227 1228 mbox->m_in.poll = 0; 1229 mbox->m_in.ack = 0x77; 1230 1231 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1232 1233 while(RDINDOOR(adapter) & 0x2) 1234 cpu_relax(); 1235 } 1236 else { 1237 irq_disable(adapter); 1238 issue_command(adapter); 1239 1240 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1241 cpu_relax(); 1242 1243 set_irq_state(adapter, byte); 1244 irq_enable(adapter); 1245 irq_ack(adapter); 1246 } 1247 1248 return mbox->m_in.status; 1249 1250 bug_blocked_mailbox: 1251 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n"); 1252 udelay (1000); 1253 return -1; 1254 } 1255 1256 1257 /** 1258 * megaraid_isr_iomapped() 1259 * @irq - irq 1260 * @devp - pointer to our soft state 1261 * 1262 * Interrupt service routine for io-mapped controllers. 1263 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1264 * and service the completed commands. 1265 */ 1266 static irqreturn_t 1267 megaraid_isr_iomapped(int irq, void *devp) 1268 { 1269 adapter_t *adapter = devp; 1270 unsigned long flags; 1271 u8 status; 1272 u8 nstatus; 1273 u8 completed[MAX_FIRMWARE_STATUS]; 1274 u8 byte; 1275 int handled = 0; 1276 1277 1278 /* 1279 * loop till F/W has more commands for us to complete. 1280 */ 1281 spin_lock_irqsave(&adapter->lock, flags); 1282 1283 do { 1284 /* Check if a valid interrupt is pending */ 1285 byte = irq_state(adapter); 1286 if( (byte & VALID_INTR_BYTE) == 0 ) { 1287 /* 1288 * No more pending commands 1289 */ 1290 goto out_unlock; 1291 } 1292 set_irq_state(adapter, byte); 1293 1294 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1295 == 0xFF) 1296 cpu_relax(); 1297 adapter->mbox->m_in.numstatus = 0xFF; 1298 1299 status = adapter->mbox->m_in.status; 1300 1301 /* 1302 * decrement the pending queue counter 1303 */ 1304 atomic_sub(nstatus, &adapter->pend_cmds); 1305 1306 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1307 nstatus); 1308 1309 /* Acknowledge interrupt */ 1310 irq_ack(adapter); 1311 1312 mega_cmd_done(adapter, completed, nstatus, status); 1313 1314 mega_rundoneq(adapter); 1315 1316 handled = 1; 1317 1318 /* Loop through any pending requests */ 1319 if(atomic_read(&adapter->quiescent) == 0) { 1320 mega_runpendq(adapter); 1321 } 1322 1323 } while(1); 1324 1325 out_unlock: 1326 1327 spin_unlock_irqrestore(&adapter->lock, flags); 1328 1329 return IRQ_RETVAL(handled); 1330 } 1331 1332 1333 /** 1334 * megaraid_isr_memmapped() 1335 * @irq - irq 1336 * @devp - pointer to our soft state 1337 * 1338 * Interrupt service routine for memory-mapped controllers. 1339 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1340 * and service the completed commands. 1341 */ 1342 static irqreturn_t 1343 megaraid_isr_memmapped(int irq, void *devp) 1344 { 1345 adapter_t *adapter = devp; 1346 unsigned long flags; 1347 u8 status; 1348 u32 dword = 0; 1349 u8 nstatus; 1350 u8 completed[MAX_FIRMWARE_STATUS]; 1351 int handled = 0; 1352 1353 1354 /* 1355 * loop till F/W has more commands for us to complete. 1356 */ 1357 spin_lock_irqsave(&adapter->lock, flags); 1358 1359 do { 1360 /* Check if a valid interrupt is pending */ 1361 dword = RDOUTDOOR(adapter); 1362 if(dword != 0x10001234) { 1363 /* 1364 * No more pending commands 1365 */ 1366 goto out_unlock; 1367 } 1368 WROUTDOOR(adapter, 0x10001234); 1369 1370 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1371 == 0xFF) { 1372 cpu_relax(); 1373 } 1374 adapter->mbox->m_in.numstatus = 0xFF; 1375 1376 status = adapter->mbox->m_in.status; 1377 1378 /* 1379 * decrement the pending queue counter 1380 */ 1381 atomic_sub(nstatus, &adapter->pend_cmds); 1382 1383 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1384 nstatus); 1385 1386 /* Acknowledge interrupt */ 1387 WRINDOOR(adapter, 0x2); 1388 1389 handled = 1; 1390 1391 while( RDINDOOR(adapter) & 0x02 ) 1392 cpu_relax(); 1393 1394 mega_cmd_done(adapter, completed, nstatus, status); 1395 1396 mega_rundoneq(adapter); 1397 1398 /* Loop through any pending requests */ 1399 if(atomic_read(&adapter->quiescent) == 0) { 1400 mega_runpendq(adapter); 1401 } 1402 1403 } while(1); 1404 1405 out_unlock: 1406 1407 spin_unlock_irqrestore(&adapter->lock, flags); 1408 1409 return IRQ_RETVAL(handled); 1410 } 1411 /** 1412 * mega_cmd_done() 1413 * @adapter - pointer to our soft state 1414 * @completed - array of ids of completed commands 1415 * @nstatus - number of completed commands 1416 * @status - status of the last command completed 1417 * 1418 * Complete the commands and call the scsi mid-layer callback hooks. 1419 */ 1420 static void 1421 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1422 { 1423 mega_ext_passthru *epthru = NULL; 1424 struct scatterlist *sgl; 1425 Scsi_Cmnd *cmd = NULL; 1426 mega_passthru *pthru = NULL; 1427 mbox_t *mbox = NULL; 1428 u8 c; 1429 scb_t *scb; 1430 int islogical; 1431 int cmdid; 1432 int i; 1433 1434 /* 1435 * for all the commands completed, call the mid-layer callback routine 1436 * and free the scb. 1437 */ 1438 for( i = 0; i < nstatus; i++ ) { 1439 1440 cmdid = completed[i]; 1441 1442 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1443 scb = &adapter->int_scb; 1444 cmd = scb->cmd; 1445 mbox = (mbox_t *)scb->raw_mbox; 1446 1447 /* 1448 * Internal command interface do not fire the extended 1449 * passthru or 64-bit passthru 1450 */ 1451 pthru = scb->pthru; 1452 1453 } 1454 else { 1455 scb = &adapter->scb_list[cmdid]; 1456 1457 /* 1458 * Make sure f/w has completed a valid command 1459 */ 1460 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1461 printk(KERN_CRIT 1462 "megaraid: invalid command "); 1463 printk("Id %d, scb->state:%x, scsi cmd:%p\n", 1464 cmdid, scb->state, scb->cmd); 1465 1466 continue; 1467 } 1468 1469 /* 1470 * Was a abort issued for this command 1471 */ 1472 if( scb->state & SCB_ABORT ) { 1473 1474 printk(KERN_WARNING 1475 "megaraid: aborted cmd [%x] complete.\n", 1476 scb->idx); 1477 1478 scb->cmd->result = (DID_ABORT << 16); 1479 1480 list_add_tail(SCSI_LIST(scb->cmd), 1481 &adapter->completed_list); 1482 1483 mega_free_scb(adapter, scb); 1484 1485 continue; 1486 } 1487 1488 /* 1489 * Was a reset issued for this command 1490 */ 1491 if( scb->state & SCB_RESET ) { 1492 1493 printk(KERN_WARNING 1494 "megaraid: reset cmd [%x] complete.\n", 1495 scb->idx); 1496 1497 scb->cmd->result = (DID_RESET << 16); 1498 1499 list_add_tail(SCSI_LIST(scb->cmd), 1500 &adapter->completed_list); 1501 1502 mega_free_scb (adapter, scb); 1503 1504 continue; 1505 } 1506 1507 cmd = scb->cmd; 1508 pthru = scb->pthru; 1509 epthru = scb->epthru; 1510 mbox = (mbox_t *)scb->raw_mbox; 1511 1512 #if MEGA_HAVE_STATS 1513 { 1514 1515 int logdrv = mbox->m_out.logdrv; 1516 1517 islogical = adapter->logdrv_chan[cmd->channel]; 1518 /* 1519 * Maintain an error counter for the logical drive. 1520 * Some application like SNMP agent need such 1521 * statistics 1522 */ 1523 if( status && islogical && (cmd->cmnd[0] == READ_6 || 1524 cmd->cmnd[0] == READ_10 || 1525 cmd->cmnd[0] == READ_12)) { 1526 /* 1527 * Logical drive number increases by 0x80 when 1528 * a logical drive is deleted 1529 */ 1530 adapter->rd_errors[logdrv%0x80]++; 1531 } 1532 1533 if( status && islogical && (cmd->cmnd[0] == WRITE_6 || 1534 cmd->cmnd[0] == WRITE_10 || 1535 cmd->cmnd[0] == WRITE_12)) { 1536 /* 1537 * Logical drive number increases by 0x80 when 1538 * a logical drive is deleted 1539 */ 1540 adapter->wr_errors[logdrv%0x80]++; 1541 } 1542 1543 } 1544 #endif 1545 } 1546 1547 /* 1548 * Do not return the presence of hard disk on the channel so, 1549 * inquiry sent, and returned data==hard disk or removable 1550 * hard disk and not logical, request should return failure! - 1551 * PJ 1552 */ 1553 islogical = adapter->logdrv_chan[cmd->device->channel]; 1554 if( cmd->cmnd[0] == INQUIRY && !islogical ) { 1555 1556 sgl = scsi_sglist(cmd); 1557 if( sg_page(sgl) ) { 1558 c = *(unsigned char *) sg_virt(&sgl[0]); 1559 } else { 1560 printk(KERN_WARNING 1561 "megaraid: invalid sg.\n"); 1562 c = 0; 1563 } 1564 1565 if(IS_RAID_CH(adapter, cmd->device->channel) && 1566 ((c & 0x1F ) == TYPE_DISK)) { 1567 status = 0xF0; 1568 } 1569 } 1570 1571 /* clear result; otherwise, success returns corrupt value */ 1572 cmd->result = 0; 1573 1574 /* Convert MegaRAID status to Linux error code */ 1575 switch (status) { 1576 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1577 cmd->result |= (DID_OK << 16); 1578 break; 1579 1580 case 0x02: /* ERROR_ABORTED, i.e. 1581 SCSI_STATUS_CHECK_CONDITION */ 1582 1583 /* set sense_buffer and result fields */ 1584 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1585 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1586 1587 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1588 14); 1589 1590 cmd->result = (DRIVER_SENSE << 24) | 1591 (DID_OK << 16) | 1592 (CHECK_CONDITION << 1); 1593 } 1594 else { 1595 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1596 1597 memcpy(cmd->sense_buffer, 1598 epthru->reqsensearea, 14); 1599 1600 cmd->result = (DRIVER_SENSE << 24) | 1601 (DID_OK << 16) | 1602 (CHECK_CONDITION << 1); 1603 } else { 1604 cmd->sense_buffer[0] = 0x70; 1605 cmd->sense_buffer[2] = ABORTED_COMMAND; 1606 cmd->result |= (CHECK_CONDITION << 1); 1607 } 1608 } 1609 break; 1610 1611 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1612 SCSI_STATUS_BUSY */ 1613 cmd->result |= (DID_BUS_BUSY << 16) | status; 1614 break; 1615 1616 default: 1617 #if MEGA_HAVE_CLUSTERING 1618 /* 1619 * If TEST_UNIT_READY fails, we know 1620 * MEGA_RESERVATION_STATUS failed 1621 */ 1622 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1623 cmd->result |= (DID_ERROR << 16) | 1624 (RESERVATION_CONFLICT << 1); 1625 } 1626 else 1627 /* 1628 * Error code returned is 1 if Reserve or Release 1629 * failed or the input parameter is invalid 1630 */ 1631 if( status == 1 && 1632 (cmd->cmnd[0] == RESERVE || 1633 cmd->cmnd[0] == RELEASE) ) { 1634 1635 cmd->result |= (DID_ERROR << 16) | 1636 (RESERVATION_CONFLICT << 1); 1637 } 1638 else 1639 #endif 1640 cmd->result |= (DID_BAD_TARGET << 16)|status; 1641 } 1642 1643 /* 1644 * Only free SCBs for the commands coming down from the 1645 * mid-layer, not for which were issued internally 1646 * 1647 * For internal command, restore the status returned by the 1648 * firmware so that user can interpret it. 1649 */ 1650 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1651 cmd->result = status; 1652 1653 /* 1654 * Remove the internal command from the pending list 1655 */ 1656 list_del_init(&scb->list); 1657 scb->state = SCB_FREE; 1658 } 1659 else { 1660 mega_free_scb(adapter, scb); 1661 } 1662 1663 /* Add Scsi_Command to end of completed queue */ 1664 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1665 } 1666 } 1667 1668 1669 /* 1670 * mega_runpendq() 1671 * 1672 * Run through the list of completed requests and finish it 1673 */ 1674 static void 1675 mega_rundoneq (adapter_t *adapter) 1676 { 1677 Scsi_Cmnd *cmd; 1678 struct list_head *pos; 1679 1680 list_for_each(pos, &adapter->completed_list) { 1681 1682 struct scsi_pointer* spos = (struct scsi_pointer *)pos; 1683 1684 cmd = list_entry(spos, Scsi_Cmnd, SCp); 1685 cmd->scsi_done(cmd); 1686 } 1687 1688 INIT_LIST_HEAD(&adapter->completed_list); 1689 } 1690 1691 1692 /* 1693 * Free a SCB structure 1694 * Note: We assume the scsi commands associated with this scb is not free yet. 1695 */ 1696 static void 1697 mega_free_scb(adapter_t *adapter, scb_t *scb) 1698 { 1699 switch( scb->dma_type ) { 1700 1701 case MEGA_DMA_TYPE_NONE: 1702 break; 1703 1704 case MEGA_SGLIST: 1705 scsi_dma_unmap(scb->cmd); 1706 break; 1707 default: 1708 break; 1709 } 1710 1711 /* 1712 * Remove from the pending list 1713 */ 1714 list_del_init(&scb->list); 1715 1716 /* Link the scb back into free list */ 1717 scb->state = SCB_FREE; 1718 scb->cmd = NULL; 1719 1720 list_add(&scb->list, &adapter->free_list); 1721 } 1722 1723 1724 static int 1725 __mega_busywait_mbox (adapter_t *adapter) 1726 { 1727 volatile mbox_t *mbox = adapter->mbox; 1728 long counter; 1729 1730 for (counter = 0; counter < 10000; counter++) { 1731 if (!mbox->m_in.busy) 1732 return 0; 1733 udelay(100); 1734 cond_resched(); 1735 } 1736 return -1; /* give up after 1 second */ 1737 } 1738 1739 /* 1740 * Copies data to SGLIST 1741 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1742 */ 1743 static int 1744 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1745 { 1746 struct scatterlist *sg; 1747 Scsi_Cmnd *cmd; 1748 int sgcnt; 1749 int idx; 1750 1751 cmd = scb->cmd; 1752 1753 /* 1754 * Copy Scatter-Gather list info into controller structure. 1755 * 1756 * The number of sg elements returned must not exceed our limit 1757 */ 1758 sgcnt = scsi_dma_map(cmd); 1759 1760 scb->dma_type = MEGA_SGLIST; 1761 1762 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0); 1763 1764 *len = 0; 1765 1766 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { 1767 sg = scsi_sglist(cmd); 1768 scb->dma_h_bulkdata = sg_dma_address(sg); 1769 *buf = (u32)scb->dma_h_bulkdata; 1770 *len = sg_dma_len(sg); 1771 return 0; 1772 } 1773 1774 scsi_for_each_sg(cmd, sg, sgcnt, idx) { 1775 if (adapter->has_64bit_addr) { 1776 scb->sgl64[idx].address = sg_dma_address(sg); 1777 *len += scb->sgl64[idx].length = sg_dma_len(sg); 1778 } else { 1779 scb->sgl[idx].address = sg_dma_address(sg); 1780 *len += scb->sgl[idx].length = sg_dma_len(sg); 1781 } 1782 } 1783 1784 /* Reset pointer and length fields */ 1785 *buf = scb->sgl_dma_addr; 1786 1787 /* Return count of SG requests */ 1788 return sgcnt; 1789 } 1790 1791 1792 /* 1793 * mega_8_to_40ld() 1794 * 1795 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1796 * Enquiry3 structures for later use 1797 */ 1798 static void 1799 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1800 mega_product_info *product_info) 1801 { 1802 int i; 1803 1804 product_info->max_commands = inquiry->adapter_info.max_commands; 1805 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1806 product_info->nchannels = inquiry->adapter_info.nchannels; 1807 1808 for (i = 0; i < 4; i++) { 1809 product_info->fw_version[i] = 1810 inquiry->adapter_info.fw_version[i]; 1811 1812 product_info->bios_version[i] = 1813 inquiry->adapter_info.bios_version[i]; 1814 } 1815 enquiry3->cache_flush_interval = 1816 inquiry->adapter_info.cache_flush_interval; 1817 1818 product_info->dram_size = inquiry->adapter_info.dram_size; 1819 1820 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1821 1822 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1823 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1824 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1825 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1826 } 1827 1828 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1829 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1830 } 1831 1832 static inline void 1833 mega_free_sgl(adapter_t *adapter) 1834 { 1835 scb_t *scb; 1836 int i; 1837 1838 for(i = 0; i < adapter->max_cmds; i++) { 1839 1840 scb = &adapter->scb_list[i]; 1841 1842 if( scb->sgl64 ) { 1843 pci_free_consistent(adapter->dev, 1844 sizeof(mega_sgl64) * adapter->sglen, 1845 scb->sgl64, 1846 scb->sgl_dma_addr); 1847 1848 scb->sgl64 = NULL; 1849 } 1850 1851 if( scb->pthru ) { 1852 pci_free_consistent(adapter->dev, sizeof(mega_passthru), 1853 scb->pthru, scb->pthru_dma_addr); 1854 1855 scb->pthru = NULL; 1856 } 1857 1858 if( scb->epthru ) { 1859 pci_free_consistent(adapter->dev, 1860 sizeof(mega_ext_passthru), 1861 scb->epthru, scb->epthru_dma_addr); 1862 1863 scb->epthru = NULL; 1864 } 1865 1866 } 1867 } 1868 1869 1870 /* 1871 * Get information about the card/driver 1872 */ 1873 const char * 1874 megaraid_info(struct Scsi_Host *host) 1875 { 1876 static char buffer[512]; 1877 adapter_t *adapter; 1878 1879 adapter = (adapter_t *)host->hostdata; 1880 1881 sprintf (buffer, 1882 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1883 adapter->fw_version, adapter->product_info.max_commands, 1884 adapter->host->max_id, adapter->host->max_channel, 1885 adapter->host->max_lun); 1886 return buffer; 1887 } 1888 1889 /* 1890 * Abort a previous SCSI request. Only commands on the pending list can be 1891 * aborted. All the commands issued to the F/W must complete. 1892 */ 1893 static int 1894 megaraid_abort(Scsi_Cmnd *cmd) 1895 { 1896 adapter_t *adapter; 1897 int rval; 1898 1899 adapter = (adapter_t *)cmd->device->host->hostdata; 1900 1901 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1902 1903 /* 1904 * This is required here to complete any completed requests 1905 * to be communicated over to the mid layer. 1906 */ 1907 mega_rundoneq(adapter); 1908 1909 return rval; 1910 } 1911 1912 1913 static int 1914 megaraid_reset(struct scsi_cmnd *cmd) 1915 { 1916 adapter_t *adapter; 1917 megacmd_t mc; 1918 int rval; 1919 1920 adapter = (adapter_t *)cmd->device->host->hostdata; 1921 1922 #if MEGA_HAVE_CLUSTERING 1923 mc.cmd = MEGA_CLUSTER_CMD; 1924 mc.opcode = MEGA_RESET_RESERVATIONS; 1925 1926 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1927 printk(KERN_WARNING 1928 "megaraid: reservation reset failed.\n"); 1929 } 1930 else { 1931 printk(KERN_INFO "megaraid: reservation reset.\n"); 1932 } 1933 #endif 1934 1935 spin_lock_irq(&adapter->lock); 1936 1937 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 1938 1939 /* 1940 * This is required here to complete any completed requests 1941 * to be communicated over to the mid layer. 1942 */ 1943 mega_rundoneq(adapter); 1944 spin_unlock_irq(&adapter->lock); 1945 1946 return rval; 1947 } 1948 1949 /** 1950 * megaraid_abort_and_reset() 1951 * @adapter - megaraid soft state 1952 * @cmd - scsi command to be aborted or reset 1953 * @aor - abort or reset flag 1954 * 1955 * Try to locate the scsi command in the pending queue. If found and is not 1956 * issued to the controller, abort/reset it. Otherwise return failure 1957 */ 1958 static int 1959 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor) 1960 { 1961 struct list_head *pos, *next; 1962 scb_t *scb; 1963 1964 printk(KERN_WARNING "megaraid: %s cmd=%x <c=%d t=%d l=%d>\n", 1965 (aor == SCB_ABORT)? "ABORTING":"RESET", 1966 cmd->cmnd[0], cmd->device->channel, 1967 cmd->device->id, cmd->device->lun); 1968 1969 if(list_empty(&adapter->pending_list)) 1970 return FALSE; 1971 1972 list_for_each_safe(pos, next, &adapter->pending_list) { 1973 1974 scb = list_entry(pos, scb_t, list); 1975 1976 if (scb->cmd == cmd) { /* Found command */ 1977 1978 scb->state |= aor; 1979 1980 /* 1981 * Check if this command has firmware ownership. If 1982 * yes, we cannot reset this command. Whenever f/w 1983 * completes this command, we will return appropriate 1984 * status from ISR. 1985 */ 1986 if( scb->state & SCB_ISSUED ) { 1987 1988 printk(KERN_WARNING 1989 "megaraid: %s[%x], fw owner.\n", 1990 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1991 scb->idx); 1992 1993 return FALSE; 1994 } 1995 else { 1996 1997 /* 1998 * Not yet issued! Remove from the pending 1999 * list 2000 */ 2001 printk(KERN_WARNING 2002 "megaraid: %s-[%x], driver owner.\n", 2003 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2004 scb->idx); 2005 2006 mega_free_scb(adapter, scb); 2007 2008 if( aor == SCB_ABORT ) { 2009 cmd->result = (DID_ABORT << 16); 2010 } 2011 else { 2012 cmd->result = (DID_RESET << 16); 2013 } 2014 2015 list_add_tail(SCSI_LIST(cmd), 2016 &adapter->completed_list); 2017 2018 return TRUE; 2019 } 2020 } 2021 } 2022 2023 return FALSE; 2024 } 2025 2026 static inline int 2027 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2028 { 2029 *pdev = alloc_pci_dev(); 2030 2031 if( *pdev == NULL ) return -1; 2032 2033 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2034 2035 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) { 2036 kfree(*pdev); 2037 return -1; 2038 } 2039 2040 return 0; 2041 } 2042 2043 static inline void 2044 free_local_pdev(struct pci_dev *pdev) 2045 { 2046 kfree(pdev); 2047 } 2048 2049 /** 2050 * mega_allocate_inquiry() 2051 * @dma_handle - handle returned for dma address 2052 * @pdev - handle to pci device 2053 * 2054 * allocates memory for inquiry structure 2055 */ 2056 static inline void * 2057 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2058 { 2059 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2060 } 2061 2062 2063 static inline void 2064 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2065 { 2066 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2067 } 2068 2069 2070 #ifdef CONFIG_PROC_FS 2071 /* Following code handles /proc fs */ 2072 2073 /** 2074 * proc_show_config() 2075 * @m - Synthetic file construction data 2076 * @v - File iterator 2077 * 2078 * Display configuration information about the controller. 2079 */ 2080 static int 2081 proc_show_config(struct seq_file *m, void *v) 2082 { 2083 2084 adapter_t *adapter = m->private; 2085 2086 seq_puts(m, MEGARAID_VERSION); 2087 if(adapter->product_info.product_name[0]) 2088 seq_printf(m, "%s\n", adapter->product_info.product_name); 2089 2090 seq_puts(m, "Controller Type: "); 2091 2092 if( adapter->flag & BOARD_MEMMAP ) 2093 seq_puts(m, "438/466/467/471/493/518/520/531/532\n"); 2094 else 2095 seq_puts(m, "418/428/434\n"); 2096 2097 if(adapter->flag & BOARD_40LD) 2098 seq_puts(m, "Controller Supports 40 Logical Drives\n"); 2099 2100 if(adapter->flag & BOARD_64BIT) 2101 seq_puts(m, "Controller capable of 64-bit memory addressing\n"); 2102 if( adapter->has_64bit_addr ) 2103 seq_puts(m, "Controller using 64-bit memory addressing\n"); 2104 else 2105 seq_puts(m, "Controller is not using 64-bit memory addressing\n"); 2106 2107 seq_printf(m, "Base = %08lx, Irq = %d, ", 2108 adapter->base, adapter->host->irq); 2109 2110 seq_printf(m, "Logical Drives = %d, Channels = %d\n", 2111 adapter->numldrv, adapter->product_info.nchannels); 2112 2113 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n", 2114 adapter->fw_version, adapter->bios_version, 2115 adapter->product_info.dram_size); 2116 2117 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2118 adapter->product_info.max_commands, adapter->max_cmds); 2119 2120 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb); 2121 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del); 2122 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); 2123 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv); 2124 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); 2125 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); 2126 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); 2127 seq_printf(m, "quiescent = %d\n", 2128 atomic_read(&adapter->quiescent)); 2129 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster); 2130 2131 seq_puts(m, "\nModule Parameters:\n"); 2132 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun); 2133 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io); 2134 return 0; 2135 } 2136 2137 /** 2138 * proc_show_stat() 2139 * @m - Synthetic file construction data 2140 * @v - File iterator 2141 * 2142 * Display statistical information about the I/O activity. 2143 */ 2144 static int 2145 proc_show_stat(struct seq_file *m, void *v) 2146 { 2147 adapter_t *adapter = m->private; 2148 #if MEGA_HAVE_STATS 2149 int i; 2150 #endif 2151 2152 seq_puts(m, "Statistical Information for this controller\n"); 2153 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); 2154 #if MEGA_HAVE_STATS 2155 for(i = 0; i < adapter->numldrv; i++) { 2156 seq_printf(m, "Logical Drive %d:\n", i); 2157 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n", 2158 adapter->nreads[i], adapter->nwrites[i]); 2159 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n", 2160 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2161 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n", 2162 adapter->rd_errors[i], adapter->wr_errors[i]); 2163 } 2164 #else 2165 seq_puts(m, "IO and error counters not compiled in driver.\n"); 2166 #endif 2167 return 0; 2168 } 2169 2170 2171 /** 2172 * proc_show_mbox() 2173 * @m - Synthetic file construction data 2174 * @v - File iterator 2175 * 2176 * Display mailbox information for the last command issued. This information 2177 * is good for debugging. 2178 */ 2179 static int 2180 proc_show_mbox(struct seq_file *m, void *v) 2181 { 2182 adapter_t *adapter = m->private; 2183 volatile mbox_t *mbox = adapter->mbox; 2184 2185 seq_puts(m, "Contents of Mail Box Structure\n"); 2186 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd); 2187 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid); 2188 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors); 2189 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba); 2190 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr); 2191 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv); 2192 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements); 2193 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy); 2194 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status); 2195 return 0; 2196 } 2197 2198 2199 /** 2200 * proc_show_rebuild_rate() 2201 * @m - Synthetic file construction data 2202 * @v - File iterator 2203 * 2204 * Display current rebuild rate 2205 */ 2206 static int 2207 proc_show_rebuild_rate(struct seq_file *m, void *v) 2208 { 2209 adapter_t *adapter = m->private; 2210 dma_addr_t dma_handle; 2211 caddr_t inquiry; 2212 struct pci_dev *pdev; 2213 2214 if( make_local_pdev(adapter, &pdev) != 0 ) 2215 return 0; 2216 2217 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2218 goto free_pdev; 2219 2220 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2221 seq_puts(m, "Adapter inquiry failed.\n"); 2222 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2223 goto free_inquiry; 2224 } 2225 2226 if( adapter->flag & BOARD_40LD ) 2227 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2228 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2229 else 2230 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2231 ((mraid_ext_inquiry *) 2232 inquiry)->raid_inq.adapter_info.rebuild_rate); 2233 2234 free_inquiry: 2235 mega_free_inquiry(inquiry, dma_handle, pdev); 2236 free_pdev: 2237 free_local_pdev(pdev); 2238 return 0; 2239 } 2240 2241 2242 /** 2243 * proc_show_battery() 2244 * @m - Synthetic file construction data 2245 * @v - File iterator 2246 * 2247 * Display information about the battery module on the controller. 2248 */ 2249 static int 2250 proc_show_battery(struct seq_file *m, void *v) 2251 { 2252 adapter_t *adapter = m->private; 2253 dma_addr_t dma_handle; 2254 caddr_t inquiry; 2255 struct pci_dev *pdev; 2256 u8 battery_status; 2257 2258 if( make_local_pdev(adapter, &pdev) != 0 ) 2259 return 0; 2260 2261 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2262 goto free_pdev; 2263 2264 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2265 seq_printf(m, "Adapter inquiry failed.\n"); 2266 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2267 goto free_inquiry; 2268 } 2269 2270 if( adapter->flag & BOARD_40LD ) { 2271 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2272 } 2273 else { 2274 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2275 raid_inq.adapter_info.battery_status; 2276 } 2277 2278 /* 2279 * Decode the battery status 2280 */ 2281 seq_printf(m, "Battery Status:[%d]", battery_status); 2282 2283 if(battery_status == MEGA_BATT_CHARGE_DONE) 2284 seq_puts(m, " Charge Done"); 2285 2286 if(battery_status & MEGA_BATT_MODULE_MISSING) 2287 seq_puts(m, " Module Missing"); 2288 2289 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2290 seq_puts(m, " Low Voltage"); 2291 2292 if(battery_status & MEGA_BATT_TEMP_HIGH) 2293 seq_puts(m, " Temperature High"); 2294 2295 if(battery_status & MEGA_BATT_PACK_MISSING) 2296 seq_puts(m, " Pack Missing"); 2297 2298 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2299 seq_puts(m, " Charge In-progress"); 2300 2301 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2302 seq_puts(m, " Charge Fail"); 2303 2304 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2305 seq_puts(m, " Cycles Exceeded"); 2306 2307 seq_putc(m, '\n'); 2308 2309 free_inquiry: 2310 mega_free_inquiry(inquiry, dma_handle, pdev); 2311 free_pdev: 2312 free_local_pdev(pdev); 2313 return 0; 2314 } 2315 2316 2317 /* 2318 * Display scsi inquiry 2319 */ 2320 static void 2321 mega_print_inquiry(struct seq_file *m, char *scsi_inq) 2322 { 2323 int i; 2324 2325 seq_puts(m, " Vendor: "); 2326 seq_write(m, scsi_inq + 8, 8); 2327 seq_puts(m, " Model: "); 2328 seq_write(m, scsi_inq + 16, 16); 2329 seq_puts(m, " Rev: "); 2330 seq_write(m, scsi_inq + 32, 4); 2331 seq_putc(m, '\n'); 2332 2333 i = scsi_inq[0] & 0x1f; 2334 seq_printf(m, " Type: %s ", scsi_device_type(i)); 2335 2336 seq_printf(m, " ANSI SCSI revision: %02x", 2337 scsi_inq[2] & 0x07); 2338 2339 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2340 seq_puts(m, " CCS\n"); 2341 else 2342 seq_putc(m, '\n'); 2343 } 2344 2345 /** 2346 * proc_show_pdrv() 2347 * @m - Synthetic file construction data 2348 * @page - buffer to write the data in 2349 * @adapter - pointer to our soft state 2350 * 2351 * Display information about the physical drives. 2352 */ 2353 static int 2354 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel) 2355 { 2356 dma_addr_t dma_handle; 2357 char *scsi_inq; 2358 dma_addr_t scsi_inq_dma_handle; 2359 caddr_t inquiry; 2360 struct pci_dev *pdev; 2361 u8 *pdrv_state; 2362 u8 state; 2363 int tgt; 2364 int max_channels; 2365 int i; 2366 2367 if( make_local_pdev(adapter, &pdev) != 0 ) 2368 return 0; 2369 2370 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2371 goto free_pdev; 2372 2373 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2374 seq_puts(m, "Adapter inquiry failed.\n"); 2375 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2376 goto free_inquiry; 2377 } 2378 2379 2380 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2381 if( scsi_inq == NULL ) { 2382 seq_puts(m, "memory not available for scsi inq.\n"); 2383 goto free_inquiry; 2384 } 2385 2386 if( adapter->flag & BOARD_40LD ) { 2387 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2388 } 2389 else { 2390 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2391 raid_inq.pdrv_info.pdrv_state; 2392 } 2393 2394 max_channels = adapter->product_info.nchannels; 2395 2396 if( channel >= max_channels ) { 2397 goto free_pci; 2398 } 2399 2400 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2401 2402 i = channel*16 + tgt; 2403 2404 state = *(pdrv_state + i); 2405 switch( state & 0x0F ) { 2406 case PDRV_ONLINE: 2407 seq_printf(m, "Channel:%2d Id:%2d State: Online", 2408 channel, tgt); 2409 break; 2410 2411 case PDRV_FAILED: 2412 seq_printf(m, "Channel:%2d Id:%2d State: Failed", 2413 channel, tgt); 2414 break; 2415 2416 case PDRV_RBLD: 2417 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild", 2418 channel, tgt); 2419 break; 2420 2421 case PDRV_HOTSPARE: 2422 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare", 2423 channel, tgt); 2424 break; 2425 2426 default: 2427 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured", 2428 channel, tgt); 2429 break; 2430 } 2431 2432 /* 2433 * This interface displays inquiries for disk drives 2434 * only. Inquries for logical drives and non-disk 2435 * devices are available through /proc/scsi/scsi 2436 */ 2437 memset(scsi_inq, 0, 256); 2438 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2439 scsi_inq_dma_handle) || 2440 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2441 continue; 2442 } 2443 2444 /* 2445 * Check for overflow. We print less than 240 2446 * characters for inquiry 2447 */ 2448 seq_puts(m, ".\n"); 2449 mega_print_inquiry(m, scsi_inq); 2450 } 2451 2452 free_pci: 2453 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2454 free_inquiry: 2455 mega_free_inquiry(inquiry, dma_handle, pdev); 2456 free_pdev: 2457 free_local_pdev(pdev); 2458 return 0; 2459 } 2460 2461 /** 2462 * proc_show_pdrv_ch0() 2463 * @m - Synthetic file construction data 2464 * @v - File iterator 2465 * 2466 * Display information about the physical drives on physical channel 0. 2467 */ 2468 static int 2469 proc_show_pdrv_ch0(struct seq_file *m, void *v) 2470 { 2471 return proc_show_pdrv(m, m->private, 0); 2472 } 2473 2474 2475 /** 2476 * proc_show_pdrv_ch1() 2477 * @m - Synthetic file construction data 2478 * @v - File iterator 2479 * 2480 * Display information about the physical drives on physical channel 1. 2481 */ 2482 static int 2483 proc_show_pdrv_ch1(struct seq_file *m, void *v) 2484 { 2485 return proc_show_pdrv(m, m->private, 1); 2486 } 2487 2488 2489 /** 2490 * proc_show_pdrv_ch2() 2491 * @m - Synthetic file construction data 2492 * @v - File iterator 2493 * 2494 * Display information about the physical drives on physical channel 2. 2495 */ 2496 static int 2497 proc_show_pdrv_ch2(struct seq_file *m, void *v) 2498 { 2499 return proc_show_pdrv(m, m->private, 2); 2500 } 2501 2502 2503 /** 2504 * proc_show_pdrv_ch3() 2505 * @m - Synthetic file construction data 2506 * @v - File iterator 2507 * 2508 * Display information about the physical drives on physical channel 3. 2509 */ 2510 static int 2511 proc_show_pdrv_ch3(struct seq_file *m, void *v) 2512 { 2513 return proc_show_pdrv(m, m->private, 3); 2514 } 2515 2516 2517 /** 2518 * proc_show_rdrv() 2519 * @m - Synthetic file construction data 2520 * @adapter - pointer to our soft state 2521 * @start - starting logical drive to display 2522 * @end - ending logical drive to display 2523 * 2524 * We do not print the inquiry information since its already available through 2525 * /proc/scsi/scsi interface 2526 */ 2527 static int 2528 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end ) 2529 { 2530 dma_addr_t dma_handle; 2531 logdrv_param *lparam; 2532 megacmd_t mc; 2533 char *disk_array; 2534 dma_addr_t disk_array_dma_handle; 2535 caddr_t inquiry; 2536 struct pci_dev *pdev; 2537 u8 *rdrv_state; 2538 int num_ldrv; 2539 u32 array_sz; 2540 int i; 2541 2542 if( make_local_pdev(adapter, &pdev) != 0 ) 2543 return 0; 2544 2545 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2546 goto free_pdev; 2547 2548 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2549 seq_puts(m, "Adapter inquiry failed.\n"); 2550 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2551 goto free_inquiry; 2552 } 2553 2554 memset(&mc, 0, sizeof(megacmd_t)); 2555 2556 if( adapter->flag & BOARD_40LD ) { 2557 array_sz = sizeof(disk_array_40ld); 2558 2559 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2560 2561 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2562 } 2563 else { 2564 array_sz = sizeof(disk_array_8ld); 2565 2566 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2567 raid_inq.logdrv_info.ldrv_state; 2568 2569 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2570 raid_inq.logdrv_info.num_ldrv; 2571 } 2572 2573 disk_array = pci_alloc_consistent(pdev, array_sz, 2574 &disk_array_dma_handle); 2575 2576 if( disk_array == NULL ) { 2577 seq_puts(m, "memory not available.\n"); 2578 goto free_inquiry; 2579 } 2580 2581 mc.xferaddr = (u32)disk_array_dma_handle; 2582 2583 if( adapter->flag & BOARD_40LD ) { 2584 mc.cmd = FC_NEW_CONFIG; 2585 mc.opcode = OP_DCMD_READ_CONFIG; 2586 2587 if( mega_internal_command(adapter, &mc, NULL) ) { 2588 seq_puts(m, "40LD read config failed.\n"); 2589 goto free_pci; 2590 } 2591 2592 } 2593 else { 2594 mc.cmd = NEW_READ_CONFIG_8LD; 2595 2596 if( mega_internal_command(adapter, &mc, NULL) ) { 2597 mc.cmd = READ_CONFIG_8LD; 2598 if( mega_internal_command(adapter, &mc, NULL) ) { 2599 seq_puts(m, "8LD read config failed.\n"); 2600 goto free_pci; 2601 } 2602 } 2603 } 2604 2605 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 2606 2607 if( adapter->flag & BOARD_40LD ) { 2608 lparam = 2609 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 2610 } 2611 else { 2612 lparam = 2613 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 2614 } 2615 2616 /* 2617 * Check for overflow. We print less than 240 characters for 2618 * information about each logical drive. 2619 */ 2620 seq_printf(m, "Logical drive:%2d:, ", i); 2621 2622 switch( rdrv_state[i] & 0x0F ) { 2623 case RDRV_OFFLINE: 2624 seq_puts(m, "state: offline"); 2625 break; 2626 case RDRV_DEGRADED: 2627 seq_puts(m, "state: degraded"); 2628 break; 2629 case RDRV_OPTIMAL: 2630 seq_puts(m, "state: optimal"); 2631 break; 2632 case RDRV_DELETED: 2633 seq_puts(m, "state: deleted"); 2634 break; 2635 default: 2636 seq_puts(m, "state: unknown"); 2637 break; 2638 } 2639 2640 /* 2641 * Check if check consistency or initialization is going on 2642 * for this logical drive. 2643 */ 2644 if( (rdrv_state[i] & 0xF0) == 0x20 ) 2645 seq_puts(m, ", check-consistency in progress"); 2646 else if( (rdrv_state[i] & 0xF0) == 0x10 ) 2647 seq_puts(m, ", initialization in progress"); 2648 2649 seq_putc(m, '\n'); 2650 2651 seq_printf(m, "Span depth:%3d, ", lparam->span_depth); 2652 seq_printf(m, "RAID level:%3d, ", lparam->level); 2653 seq_printf(m, "Stripe size:%3d, ", 2654 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 2655 seq_printf(m, "Row size:%3d\n", lparam->row_size); 2656 2657 seq_puts(m, "Read Policy: "); 2658 switch(lparam->read_ahead) { 2659 case NO_READ_AHEAD: 2660 seq_puts(m, "No read ahead, "); 2661 break; 2662 case READ_AHEAD: 2663 seq_puts(m, "Read ahead, "); 2664 break; 2665 case ADAP_READ_AHEAD: 2666 seq_puts(m, "Adaptive, "); 2667 break; 2668 2669 } 2670 2671 seq_puts(m, "Write Policy: "); 2672 switch(lparam->write_mode) { 2673 case WRMODE_WRITE_THRU: 2674 seq_puts(m, "Write thru, "); 2675 break; 2676 case WRMODE_WRITE_BACK: 2677 seq_puts(m, "Write back, "); 2678 break; 2679 } 2680 2681 seq_puts(m, "Cache Policy: "); 2682 switch(lparam->direct_io) { 2683 case CACHED_IO: 2684 seq_puts(m, "Cached IO\n\n"); 2685 break; 2686 case DIRECT_IO: 2687 seq_puts(m, "Direct IO\n\n"); 2688 break; 2689 } 2690 } 2691 2692 free_pci: 2693 pci_free_consistent(pdev, array_sz, disk_array, 2694 disk_array_dma_handle); 2695 free_inquiry: 2696 mega_free_inquiry(inquiry, dma_handle, pdev); 2697 free_pdev: 2698 free_local_pdev(pdev); 2699 return 0; 2700 } 2701 2702 /** 2703 * proc_show_rdrv_10() 2704 * @m - Synthetic file construction data 2705 * @v - File iterator 2706 * 2707 * Display real time information about the logical drives 0 through 9. 2708 */ 2709 static int 2710 proc_show_rdrv_10(struct seq_file *m, void *v) 2711 { 2712 return proc_show_rdrv(m, m->private, 0, 9); 2713 } 2714 2715 2716 /** 2717 * proc_show_rdrv_20() 2718 * @m - Synthetic file construction data 2719 * @v - File iterator 2720 * 2721 * Display real time information about the logical drives 0 through 9. 2722 */ 2723 static int 2724 proc_show_rdrv_20(struct seq_file *m, void *v) 2725 { 2726 return proc_show_rdrv(m, m->private, 10, 19); 2727 } 2728 2729 2730 /** 2731 * proc_show_rdrv_30() 2732 * @m - Synthetic file construction data 2733 * @v - File iterator 2734 * 2735 * Display real time information about the logical drives 0 through 9. 2736 */ 2737 static int 2738 proc_show_rdrv_30(struct seq_file *m, void *v) 2739 { 2740 return proc_show_rdrv(m, m->private, 20, 29); 2741 } 2742 2743 2744 /** 2745 * proc_show_rdrv_40() 2746 * @m - Synthetic file construction data 2747 * @v - File iterator 2748 * 2749 * Display real time information about the logical drives 0 through 9. 2750 */ 2751 static int 2752 proc_show_rdrv_40(struct seq_file *m, void *v) 2753 { 2754 return proc_show_rdrv(m, m->private, 30, 39); 2755 } 2756 2757 2758 /* 2759 * seq_file wrappers for procfile show routines. 2760 */ 2761 static int mega_proc_open(struct inode *inode, struct file *file) 2762 { 2763 adapter_t *adapter = proc_get_parent_data(inode); 2764 int (*show)(struct seq_file *, void *) = PDE_DATA(inode); 2765 2766 return single_open(file, show, adapter); 2767 } 2768 2769 static const struct file_operations mega_proc_fops = { 2770 .open = mega_proc_open, 2771 .read = seq_read, 2772 .llseek = seq_lseek, 2773 .release = single_release, 2774 }; 2775 2776 /* 2777 * Table of proc files we need to create. 2778 */ 2779 struct mega_proc_file { 2780 const char *name; 2781 unsigned short ptr_offset; 2782 int (*show) (struct seq_file *m, void *v); 2783 }; 2784 2785 static const struct mega_proc_file mega_proc_files[] = { 2786 { "config", offsetof(adapter_t, proc_read), proc_show_config }, 2787 { "stat", offsetof(adapter_t, proc_stat), proc_show_stat }, 2788 { "mailbox", offsetof(adapter_t, proc_mbox), proc_show_mbox }, 2789 #if MEGA_HAVE_ENH_PROC 2790 { "rebuild-rate", offsetof(adapter_t, proc_rr), proc_show_rebuild_rate }, 2791 { "battery-status", offsetof(adapter_t, proc_battery), proc_show_battery }, 2792 { "diskdrives-ch0", offsetof(adapter_t, proc_pdrvstat[0]), proc_show_pdrv_ch0 }, 2793 { "diskdrives-ch1", offsetof(adapter_t, proc_pdrvstat[1]), proc_show_pdrv_ch1 }, 2794 { "diskdrives-ch2", offsetof(adapter_t, proc_pdrvstat[2]), proc_show_pdrv_ch2 }, 2795 { "diskdrives-ch3", offsetof(adapter_t, proc_pdrvstat[3]), proc_show_pdrv_ch3 }, 2796 { "raiddrives-0-9", offsetof(adapter_t, proc_rdrvstat[0]), proc_show_rdrv_10 }, 2797 { "raiddrives-10-19", offsetof(adapter_t, proc_rdrvstat[1]), proc_show_rdrv_20 }, 2798 { "raiddrives-20-29", offsetof(adapter_t, proc_rdrvstat[2]), proc_show_rdrv_30 }, 2799 { "raiddrives-30-39", offsetof(adapter_t, proc_rdrvstat[3]), proc_show_rdrv_40 }, 2800 #endif 2801 { NULL } 2802 }; 2803 2804 /** 2805 * mega_create_proc_entry() 2806 * @index - index in soft state array 2807 * @parent - parent node for this /proc entry 2808 * 2809 * Creates /proc entries for our controllers. 2810 */ 2811 static void 2812 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2813 { 2814 const struct mega_proc_file *f; 2815 adapter_t *adapter = hba_soft_state[index]; 2816 struct proc_dir_entry *dir, *de, **ppde; 2817 u8 string[16]; 2818 2819 sprintf(string, "hba%d", adapter->host->host_no); 2820 2821 dir = adapter->controller_proc_dir_entry = 2822 proc_mkdir_data(string, 0, parent, adapter); 2823 if(!dir) { 2824 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n"); 2825 return; 2826 } 2827 2828 for (f = mega_proc_files; f->name; f++) { 2829 de = proc_create_data(f->name, S_IRUSR, dir, &mega_proc_fops, 2830 f->show); 2831 if (!de) { 2832 printk(KERN_WARNING "\nmegaraid: proc_create failed\n"); 2833 return; 2834 } 2835 2836 ppde = (void *)adapter + f->ptr_offset; 2837 *ppde = de; 2838 } 2839 } 2840 2841 #else 2842 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2843 { 2844 } 2845 #endif 2846 2847 2848 /** 2849 * megaraid_biosparam() 2850 * 2851 * Return the disk geometry for a particular disk 2852 */ 2853 static int 2854 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 2855 sector_t capacity, int geom[]) 2856 { 2857 adapter_t *adapter; 2858 unsigned char *bh; 2859 int heads; 2860 int sectors; 2861 int cylinders; 2862 int rval; 2863 2864 /* Get pointer to host config structure */ 2865 adapter = (adapter_t *)sdev->host->hostdata; 2866 2867 if (IS_RAID_CH(adapter, sdev->channel)) { 2868 /* Default heads (64) & sectors (32) */ 2869 heads = 64; 2870 sectors = 32; 2871 cylinders = (ulong)capacity / (heads * sectors); 2872 2873 /* 2874 * Handle extended translation size for logical drives 2875 * > 1Gb 2876 */ 2877 if ((ulong)capacity >= 0x200000) { 2878 heads = 255; 2879 sectors = 63; 2880 cylinders = (ulong)capacity / (heads * sectors); 2881 } 2882 2883 /* return result */ 2884 geom[0] = heads; 2885 geom[1] = sectors; 2886 geom[2] = cylinders; 2887 } 2888 else { 2889 bh = scsi_bios_ptable(bdev); 2890 2891 if( bh ) { 2892 rval = scsi_partsize(bh, capacity, 2893 &geom[2], &geom[0], &geom[1]); 2894 kfree(bh); 2895 if( rval != -1 ) 2896 return rval; 2897 } 2898 2899 printk(KERN_INFO 2900 "megaraid: invalid partition on this disk on channel %d\n", 2901 sdev->channel); 2902 2903 /* Default heads (64) & sectors (32) */ 2904 heads = 64; 2905 sectors = 32; 2906 cylinders = (ulong)capacity / (heads * sectors); 2907 2908 /* Handle extended translation size for logical drives > 1Gb */ 2909 if ((ulong)capacity >= 0x200000) { 2910 heads = 255; 2911 sectors = 63; 2912 cylinders = (ulong)capacity / (heads * sectors); 2913 } 2914 2915 /* return result */ 2916 geom[0] = heads; 2917 geom[1] = sectors; 2918 geom[2] = cylinders; 2919 } 2920 2921 return 0; 2922 } 2923 2924 /** 2925 * mega_init_scb() 2926 * @adapter - pointer to our soft state 2927 * 2928 * Allocate memory for the various pointers in the scb structures: 2929 * scatter-gather list pointer, passthru and extended passthru structure 2930 * pointers. 2931 */ 2932 static int 2933 mega_init_scb(adapter_t *adapter) 2934 { 2935 scb_t *scb; 2936 int i; 2937 2938 for( i = 0; i < adapter->max_cmds; i++ ) { 2939 2940 scb = &adapter->scb_list[i]; 2941 2942 scb->sgl64 = NULL; 2943 scb->sgl = NULL; 2944 scb->pthru = NULL; 2945 scb->epthru = NULL; 2946 } 2947 2948 for( i = 0; i < adapter->max_cmds; i++ ) { 2949 2950 scb = &adapter->scb_list[i]; 2951 2952 scb->idx = i; 2953 2954 scb->sgl64 = pci_alloc_consistent(adapter->dev, 2955 sizeof(mega_sgl64) * adapter->sglen, 2956 &scb->sgl_dma_addr); 2957 2958 scb->sgl = (mega_sglist *)scb->sgl64; 2959 2960 if( !scb->sgl ) { 2961 printk(KERN_WARNING "RAID: Can't allocate sglist.\n"); 2962 mega_free_sgl(adapter); 2963 return -1; 2964 } 2965 2966 scb->pthru = pci_alloc_consistent(adapter->dev, 2967 sizeof(mega_passthru), 2968 &scb->pthru_dma_addr); 2969 2970 if( !scb->pthru ) { 2971 printk(KERN_WARNING "RAID: Can't allocate passthru.\n"); 2972 mega_free_sgl(adapter); 2973 return -1; 2974 } 2975 2976 scb->epthru = pci_alloc_consistent(adapter->dev, 2977 sizeof(mega_ext_passthru), 2978 &scb->epthru_dma_addr); 2979 2980 if( !scb->epthru ) { 2981 printk(KERN_WARNING 2982 "Can't allocate extended passthru.\n"); 2983 mega_free_sgl(adapter); 2984 return -1; 2985 } 2986 2987 2988 scb->dma_type = MEGA_DMA_TYPE_NONE; 2989 2990 /* 2991 * Link to free list 2992 * lock not required since we are loading the driver, so no 2993 * commands possible right now. 2994 */ 2995 scb->state = SCB_FREE; 2996 scb->cmd = NULL; 2997 list_add(&scb->list, &adapter->free_list); 2998 } 2999 3000 return 0; 3001 } 3002 3003 3004 /** 3005 * megadev_open() 3006 * @inode - unused 3007 * @filep - unused 3008 * 3009 * Routines for the character/ioctl interface to the driver. Find out if this 3010 * is a valid open. 3011 */ 3012 static int 3013 megadev_open (struct inode *inode, struct file *filep) 3014 { 3015 /* 3016 * Only allow superuser to access private ioctl interface 3017 */ 3018 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 3019 3020 return 0; 3021 } 3022 3023 3024 /** 3025 * megadev_ioctl() 3026 * @inode - Our device inode 3027 * @filep - unused 3028 * @cmd - ioctl command 3029 * @arg - user buffer 3030 * 3031 * ioctl entry point for our private ioctl interface. We move the data in from 3032 * the user space, prepare the command (if necessary, convert the old MIMD 3033 * ioctl to new ioctl command), and issue a synchronous command to the 3034 * controller. 3035 */ 3036 static int 3037 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3038 { 3039 adapter_t *adapter; 3040 nitioctl_t uioc; 3041 int adapno; 3042 int rval; 3043 mega_passthru __user *upthru; /* user address for passthru */ 3044 mega_passthru *pthru; /* copy user passthru here */ 3045 dma_addr_t pthru_dma_hndl; 3046 void *data = NULL; /* data to be transferred */ 3047 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 3048 megacmd_t mc; 3049 megastat_t __user *ustats; 3050 int num_ldrv; 3051 u32 uxferaddr = 0; 3052 struct pci_dev *pdev; 3053 3054 ustats = NULL; /* avoid compilation warnings */ 3055 num_ldrv = 0; 3056 3057 /* 3058 * Make sure only USCSICMD are issued through this interface. 3059 * MIMD application would still fire different command. 3060 */ 3061 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 3062 return -EINVAL; 3063 } 3064 3065 /* 3066 * Check and convert a possible MIMD command to NIT command. 3067 * mega_m_to_n() copies the data from the user space, so we do not 3068 * have to do it here. 3069 * NOTE: We will need some user address to copyout the data, therefore 3070 * the inteface layer will also provide us with the required user 3071 * addresses. 3072 */ 3073 memset(&uioc, 0, sizeof(nitioctl_t)); 3074 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3075 return rval; 3076 3077 3078 switch( uioc.opcode ) { 3079 3080 case GET_DRIVER_VER: 3081 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3082 return (-EFAULT); 3083 3084 break; 3085 3086 case GET_N_ADAP: 3087 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3088 return (-EFAULT); 3089 3090 /* 3091 * Shucks. MIMD interface returns a positive value for number 3092 * of adapters. TODO: Change it to return 0 when there is no 3093 * applicatio using mimd interface. 3094 */ 3095 return hba_count; 3096 3097 case GET_ADAP_INFO: 3098 3099 /* 3100 * Which adapter 3101 */ 3102 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3103 return (-ENODEV); 3104 3105 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3106 sizeof(struct mcontroller)) ) 3107 return (-EFAULT); 3108 break; 3109 3110 #if MEGA_HAVE_STATS 3111 3112 case GET_STATS: 3113 /* 3114 * Which adapter 3115 */ 3116 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3117 return (-ENODEV); 3118 3119 adapter = hba_soft_state[adapno]; 3120 3121 ustats = uioc.uioc_uaddr; 3122 3123 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3124 return (-EFAULT); 3125 3126 /* 3127 * Check for the validity of the logical drive number 3128 */ 3129 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3130 3131 if( copy_to_user(ustats->nreads, adapter->nreads, 3132 num_ldrv*sizeof(u32)) ) 3133 return -EFAULT; 3134 3135 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3136 num_ldrv*sizeof(u32)) ) 3137 return -EFAULT; 3138 3139 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3140 num_ldrv*sizeof(u32)) ) 3141 return -EFAULT; 3142 3143 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3144 num_ldrv*sizeof(u32)) ) 3145 return -EFAULT; 3146 3147 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3148 num_ldrv*sizeof(u32)) ) 3149 return -EFAULT; 3150 3151 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3152 num_ldrv*sizeof(u32)) ) 3153 return -EFAULT; 3154 3155 return 0; 3156 3157 #endif 3158 case MBOX_CMD: 3159 3160 /* 3161 * Which adapter 3162 */ 3163 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3164 return (-ENODEV); 3165 3166 adapter = hba_soft_state[adapno]; 3167 3168 /* 3169 * Deletion of logical drive is a special case. The adapter 3170 * should be quiescent before this command is issued. 3171 */ 3172 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3173 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3174 3175 /* 3176 * Do we support this feature 3177 */ 3178 if( !adapter->support_random_del ) { 3179 printk(KERN_WARNING "megaraid: logdrv "); 3180 printk("delete on non-supporting F/W.\n"); 3181 3182 return (-EINVAL); 3183 } 3184 3185 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3186 3187 if( rval == 0 ) { 3188 memset(&mc, 0, sizeof(megacmd_t)); 3189 3190 mc.status = rval; 3191 3192 rval = mega_n_to_m((void __user *)arg, &mc); 3193 } 3194 3195 return rval; 3196 } 3197 /* 3198 * This interface only support the regular passthru commands. 3199 * Reject extended passthru and 64-bit passthru 3200 */ 3201 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3202 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3203 3204 printk(KERN_WARNING "megaraid: rejected passthru.\n"); 3205 3206 return (-EINVAL); 3207 } 3208 3209 /* 3210 * For all internal commands, the buffer must be allocated in 3211 * <4GB address range 3212 */ 3213 if( make_local_pdev(adapter, &pdev) != 0 ) 3214 return -EIO; 3215 3216 /* Is it a passthru command or a DCMD */ 3217 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3218 /* Passthru commands */ 3219 3220 pthru = pci_alloc_consistent(pdev, 3221 sizeof(mega_passthru), 3222 &pthru_dma_hndl); 3223 3224 if( pthru == NULL ) { 3225 free_local_pdev(pdev); 3226 return (-ENOMEM); 3227 } 3228 3229 /* 3230 * The user passthru structure 3231 */ 3232 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; 3233 3234 /* 3235 * Copy in the user passthru here. 3236 */ 3237 if( copy_from_user(pthru, upthru, 3238 sizeof(mega_passthru)) ) { 3239 3240 pci_free_consistent(pdev, 3241 sizeof(mega_passthru), pthru, 3242 pthru_dma_hndl); 3243 3244 free_local_pdev(pdev); 3245 3246 return (-EFAULT); 3247 } 3248 3249 /* 3250 * Is there a data transfer 3251 */ 3252 if( pthru->dataxferlen ) { 3253 data = pci_alloc_consistent(pdev, 3254 pthru->dataxferlen, 3255 &data_dma_hndl); 3256 3257 if( data == NULL ) { 3258 pci_free_consistent(pdev, 3259 sizeof(mega_passthru), 3260 pthru, 3261 pthru_dma_hndl); 3262 3263 free_local_pdev(pdev); 3264 3265 return (-ENOMEM); 3266 } 3267 3268 /* 3269 * Save the user address and point the kernel 3270 * address at just allocated memory 3271 */ 3272 uxferaddr = pthru->dataxferaddr; 3273 pthru->dataxferaddr = data_dma_hndl; 3274 } 3275 3276 3277 /* 3278 * Is data coming down-stream 3279 */ 3280 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3281 /* 3282 * Get the user data 3283 */ 3284 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3285 pthru->dataxferlen) ) { 3286 rval = (-EFAULT); 3287 goto freemem_and_return; 3288 } 3289 } 3290 3291 memset(&mc, 0, sizeof(megacmd_t)); 3292 3293 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3294 mc.xferaddr = (u32)pthru_dma_hndl; 3295 3296 /* 3297 * Issue the command 3298 */ 3299 mega_internal_command(adapter, &mc, pthru); 3300 3301 rval = mega_n_to_m((void __user *)arg, &mc); 3302 3303 if( rval ) goto freemem_and_return; 3304 3305 3306 /* 3307 * Is data going up-stream 3308 */ 3309 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3310 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3311 pthru->dataxferlen) ) { 3312 rval = (-EFAULT); 3313 } 3314 } 3315 3316 /* 3317 * Send the request sense data also, irrespective of 3318 * whether the user has asked for it or not. 3319 */ 3320 if (copy_to_user(upthru->reqsensearea, 3321 pthru->reqsensearea, 14)) 3322 rval = -EFAULT; 3323 3324 freemem_and_return: 3325 if( pthru->dataxferlen ) { 3326 pci_free_consistent(pdev, 3327 pthru->dataxferlen, data, 3328 data_dma_hndl); 3329 } 3330 3331 pci_free_consistent(pdev, sizeof(mega_passthru), 3332 pthru, pthru_dma_hndl); 3333 3334 free_local_pdev(pdev); 3335 3336 return rval; 3337 } 3338 else { 3339 /* DCMD commands */ 3340 3341 /* 3342 * Is there a data transfer 3343 */ 3344 if( uioc.xferlen ) { 3345 data = pci_alloc_consistent(pdev, 3346 uioc.xferlen, &data_dma_hndl); 3347 3348 if( data == NULL ) { 3349 free_local_pdev(pdev); 3350 return (-ENOMEM); 3351 } 3352 3353 uxferaddr = MBOX(uioc)->xferaddr; 3354 } 3355 3356 /* 3357 * Is data coming down-stream 3358 */ 3359 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3360 /* 3361 * Get the user data 3362 */ 3363 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3364 uioc.xferlen) ) { 3365 3366 pci_free_consistent(pdev, 3367 uioc.xferlen, 3368 data, data_dma_hndl); 3369 3370 free_local_pdev(pdev); 3371 3372 return (-EFAULT); 3373 } 3374 } 3375 3376 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3377 3378 mc.xferaddr = (u32)data_dma_hndl; 3379 3380 /* 3381 * Issue the command 3382 */ 3383 mega_internal_command(adapter, &mc, NULL); 3384 3385 rval = mega_n_to_m((void __user *)arg, &mc); 3386 3387 if( rval ) { 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 /* 3400 * Is data going up-stream 3401 */ 3402 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3403 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3404 uioc.xferlen) ) { 3405 3406 rval = (-EFAULT); 3407 } 3408 } 3409 3410 if( uioc.xferlen ) { 3411 pci_free_consistent(pdev, 3412 uioc.xferlen, data, 3413 data_dma_hndl); 3414 } 3415 3416 free_local_pdev(pdev); 3417 3418 return rval; 3419 } 3420 3421 default: 3422 return (-EINVAL); 3423 } 3424 3425 return 0; 3426 } 3427 3428 static long 3429 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3430 { 3431 int ret; 3432 3433 mutex_lock(&megadev_mutex); 3434 ret = megadev_ioctl(filep, cmd, arg); 3435 mutex_unlock(&megadev_mutex); 3436 3437 return ret; 3438 } 3439 3440 /** 3441 * mega_m_to_n() 3442 * @arg - user address 3443 * @uioc - new ioctl structure 3444 * 3445 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3446 * structure 3447 * 3448 * Converts the older mimd ioctl structure to newer NIT structure 3449 */ 3450 static int 3451 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3452 { 3453 struct uioctl_t uioc_mimd; 3454 char signature[8] = {0}; 3455 u8 opcode; 3456 u8 subopcode; 3457 3458 3459 /* 3460 * check is the application conforms to NIT. We do not have to do much 3461 * in that case. 3462 * We exploit the fact that the signature is stored in the very 3463 * beginning of the structure. 3464 */ 3465 3466 if( copy_from_user(signature, arg, 7) ) 3467 return (-EFAULT); 3468 3469 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3470 3471 /* 3472 * NOTE NOTE: The nit ioctl is still under flux because of 3473 * change of mailbox definition, in HPE. No applications yet 3474 * use this interface and let's not have applications use this 3475 * interface till the new specifitions are in place. 3476 */ 3477 return -EINVAL; 3478 #if 0 3479 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3480 return (-EFAULT); 3481 return 0; 3482 #endif 3483 } 3484 3485 /* 3486 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3487 * 3488 * Get the user ioctl structure 3489 */ 3490 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3491 return (-EFAULT); 3492 3493 3494 /* 3495 * Get the opcode and subopcode for the commands 3496 */ 3497 opcode = uioc_mimd.ui.fcs.opcode; 3498 subopcode = uioc_mimd.ui.fcs.subopcode; 3499 3500 switch (opcode) { 3501 case 0x82: 3502 3503 switch (subopcode) { 3504 3505 case MEGAIOC_QDRVRVER: /* Query driver version */ 3506 uioc->opcode = GET_DRIVER_VER; 3507 uioc->uioc_uaddr = uioc_mimd.data; 3508 break; 3509 3510 case MEGAIOC_QNADAP: /* Get # of adapters */ 3511 uioc->opcode = GET_N_ADAP; 3512 uioc->uioc_uaddr = uioc_mimd.data; 3513 break; 3514 3515 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3516 uioc->opcode = GET_ADAP_INFO; 3517 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3518 uioc->uioc_uaddr = uioc_mimd.data; 3519 break; 3520 3521 default: 3522 return(-EINVAL); 3523 } 3524 3525 break; 3526 3527 3528 case 0x81: 3529 3530 uioc->opcode = MBOX_CMD; 3531 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3532 3533 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3534 3535 uioc->xferlen = uioc_mimd.ui.fcs.length; 3536 3537 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3538 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3539 3540 break; 3541 3542 case 0x80: 3543 3544 uioc->opcode = MBOX_CMD; 3545 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3546 3547 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3548 3549 /* 3550 * Choose the xferlen bigger of input and output data 3551 */ 3552 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3553 uioc_mimd.outlen : uioc_mimd.inlen; 3554 3555 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3556 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3557 3558 break; 3559 3560 default: 3561 return (-EINVAL); 3562 3563 } 3564 3565 return 0; 3566 } 3567 3568 /* 3569 * mega_n_to_m() 3570 * @arg - user address 3571 * @mc - mailbox command 3572 * 3573 * Updates the status information to the application, depending on application 3574 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3575 */ 3576 static int 3577 mega_n_to_m(void __user *arg, megacmd_t *mc) 3578 { 3579 nitioctl_t __user *uiocp; 3580 megacmd_t __user *umc; 3581 mega_passthru __user *upthru; 3582 struct uioctl_t __user *uioc_mimd; 3583 char signature[8] = {0}; 3584 3585 /* 3586 * check is the application conforms to NIT. 3587 */ 3588 if( copy_from_user(signature, arg, 7) ) 3589 return -EFAULT; 3590 3591 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3592 3593 uiocp = arg; 3594 3595 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3596 return (-EFAULT); 3597 3598 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3599 3600 umc = MBOX_P(uiocp); 3601 3602 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3603 return -EFAULT; 3604 3605 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3606 return (-EFAULT); 3607 } 3608 } 3609 else { 3610 uioc_mimd = arg; 3611 3612 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3613 return (-EFAULT); 3614 3615 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3616 3617 umc = (megacmd_t __user *)uioc_mimd->mbox; 3618 3619 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3620 return (-EFAULT); 3621 3622 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3623 return (-EFAULT); 3624 } 3625 } 3626 3627 return 0; 3628 } 3629 3630 3631 /* 3632 * MEGARAID 'FW' commands. 3633 */ 3634 3635 /** 3636 * mega_is_bios_enabled() 3637 * @adapter - pointer to our soft state 3638 * 3639 * issue command to find out if the BIOS is enabled for this controller 3640 */ 3641 static int 3642 mega_is_bios_enabled(adapter_t *adapter) 3643 { 3644 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3645 mbox_t *mbox; 3646 int ret; 3647 3648 mbox = (mbox_t *)raw_mbox; 3649 3650 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3651 3652 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3653 3654 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3655 3656 raw_mbox[0] = IS_BIOS_ENABLED; 3657 raw_mbox[2] = GET_BIOS; 3658 3659 3660 ret = issue_scb_block(adapter, raw_mbox); 3661 3662 return *(char *)adapter->mega_buffer; 3663 } 3664 3665 3666 /** 3667 * mega_enum_raid_scsi() 3668 * @adapter - pointer to our soft state 3669 * 3670 * Find out what channels are RAID/SCSI. This information is used to 3671 * differentiate the virtual channels and physical channels and to support 3672 * ROMB feature and non-disk devices. 3673 */ 3674 static void 3675 mega_enum_raid_scsi(adapter_t *adapter) 3676 { 3677 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3678 mbox_t *mbox; 3679 int i; 3680 3681 mbox = (mbox_t *)raw_mbox; 3682 3683 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3684 3685 /* 3686 * issue command to find out what channels are raid/scsi 3687 */ 3688 raw_mbox[0] = CHNL_CLASS; 3689 raw_mbox[2] = GET_CHNL_CLASS; 3690 3691 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3692 3693 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3694 3695 /* 3696 * Non-ROMB firmware fail this command, so all channels 3697 * must be shown RAID 3698 */ 3699 adapter->mega_ch_class = 0xFF; 3700 3701 if(!issue_scb_block(adapter, raw_mbox)) { 3702 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 3703 3704 } 3705 3706 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3707 if( (adapter->mega_ch_class >> i) & 0x01 ) { 3708 printk(KERN_INFO "megaraid: channel[%d] is raid.\n", 3709 i); 3710 } 3711 else { 3712 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n", 3713 i); 3714 } 3715 } 3716 3717 return; 3718 } 3719 3720 3721 /** 3722 * mega_get_boot_drv() 3723 * @adapter - pointer to our soft state 3724 * 3725 * Find out which device is the boot device. Note, any logical drive or any 3726 * phyical device (e.g., a CDROM) can be designated as a boot device. 3727 */ 3728 static void 3729 mega_get_boot_drv(adapter_t *adapter) 3730 { 3731 struct private_bios_data *prv_bios_data; 3732 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3733 mbox_t *mbox; 3734 u16 cksum = 0; 3735 u8 *cksum_p; 3736 u8 boot_pdrv; 3737 int i; 3738 3739 mbox = (mbox_t *)raw_mbox; 3740 3741 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3742 3743 raw_mbox[0] = BIOS_PVT_DATA; 3744 raw_mbox[2] = GET_BIOS_PVT_DATA; 3745 3746 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3747 3748 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3749 3750 adapter->boot_ldrv_enabled = 0; 3751 adapter->boot_ldrv = 0; 3752 3753 adapter->boot_pdrv_enabled = 0; 3754 adapter->boot_pdrv_ch = 0; 3755 adapter->boot_pdrv_tgt = 0; 3756 3757 if(issue_scb_block(adapter, raw_mbox) == 0) { 3758 prv_bios_data = 3759 (struct private_bios_data *)adapter->mega_buffer; 3760 3761 cksum = 0; 3762 cksum_p = (char *)prv_bios_data; 3763 for (i = 0; i < 14; i++ ) { 3764 cksum += (u16)(*cksum_p++); 3765 } 3766 3767 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 3768 3769 /* 3770 * If MSB is set, a physical drive is set as boot 3771 * device 3772 */ 3773 if( prv_bios_data->boot_drv & 0x80 ) { 3774 adapter->boot_pdrv_enabled = 1; 3775 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 3776 adapter->boot_pdrv_ch = boot_pdrv / 16; 3777 adapter->boot_pdrv_tgt = boot_pdrv % 16; 3778 } 3779 else { 3780 adapter->boot_ldrv_enabled = 1; 3781 adapter->boot_ldrv = prv_bios_data->boot_drv; 3782 } 3783 } 3784 } 3785 3786 } 3787 3788 /** 3789 * mega_support_random_del() 3790 * @adapter - pointer to our soft state 3791 * 3792 * Find out if this controller supports random deletion and addition of 3793 * logical drives 3794 */ 3795 static int 3796 mega_support_random_del(adapter_t *adapter) 3797 { 3798 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3799 mbox_t *mbox; 3800 int rval; 3801 3802 mbox = (mbox_t *)raw_mbox; 3803 3804 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3805 3806 /* 3807 * issue command 3808 */ 3809 raw_mbox[0] = FC_DEL_LOGDRV; 3810 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 3811 3812 rval = issue_scb_block(adapter, raw_mbox); 3813 3814 return !rval; 3815 } 3816 3817 3818 /** 3819 * mega_support_ext_cdb() 3820 * @adapter - pointer to our soft state 3821 * 3822 * Find out if this firmware support cdblen > 10 3823 */ 3824 static int 3825 mega_support_ext_cdb(adapter_t *adapter) 3826 { 3827 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3828 mbox_t *mbox; 3829 int rval; 3830 3831 mbox = (mbox_t *)raw_mbox; 3832 3833 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3834 /* 3835 * issue command to find out if controller supports extended CDBs. 3836 */ 3837 raw_mbox[0] = 0xA4; 3838 raw_mbox[2] = 0x16; 3839 3840 rval = issue_scb_block(adapter, raw_mbox); 3841 3842 return !rval; 3843 } 3844 3845 3846 /** 3847 * mega_del_logdrv() 3848 * @adapter - pointer to our soft state 3849 * @logdrv - logical drive to be deleted 3850 * 3851 * Delete the specified logical drive. It is the responsibility of the user 3852 * app to let the OS know about this operation. 3853 */ 3854 static int 3855 mega_del_logdrv(adapter_t *adapter, int logdrv) 3856 { 3857 unsigned long flags; 3858 scb_t *scb; 3859 int rval; 3860 3861 /* 3862 * Stop sending commands to the controller, queue them internally. 3863 * When deletion is complete, ISR will flush the queue. 3864 */ 3865 atomic_set(&adapter->quiescent, 1); 3866 3867 /* 3868 * Wait till all the issued commands are complete and there are no 3869 * commands in the pending queue 3870 */ 3871 while (atomic_read(&adapter->pend_cmds) > 0 || 3872 !list_empty(&adapter->pending_list)) 3873 msleep(1000); /* sleep for 1s */ 3874 3875 rval = mega_do_del_logdrv(adapter, logdrv); 3876 3877 spin_lock_irqsave(&adapter->lock, flags); 3878 3879 /* 3880 * If delete operation was successful, add 0x80 to the logical drive 3881 * ids for commands in the pending queue. 3882 */ 3883 if (adapter->read_ldidmap) { 3884 struct list_head *pos; 3885 list_for_each(pos, &adapter->pending_list) { 3886 scb = list_entry(pos, scb_t, list); 3887 if (scb->pthru->logdrv < 0x80 ) 3888 scb->pthru->logdrv += 0x80; 3889 } 3890 } 3891 3892 atomic_set(&adapter->quiescent, 0); 3893 3894 mega_runpendq(adapter); 3895 3896 spin_unlock_irqrestore(&adapter->lock, flags); 3897 3898 return rval; 3899 } 3900 3901 3902 static int 3903 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 3904 { 3905 megacmd_t mc; 3906 int rval; 3907 3908 memset( &mc, 0, sizeof(megacmd_t)); 3909 3910 mc.cmd = FC_DEL_LOGDRV; 3911 mc.opcode = OP_DEL_LOGDRV; 3912 mc.subopcode = logdrv; 3913 3914 rval = mega_internal_command(adapter, &mc, NULL); 3915 3916 /* log this event */ 3917 if(rval) { 3918 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv); 3919 return rval; 3920 } 3921 3922 /* 3923 * After deleting first logical drive, the logical drives must be 3924 * addressed by adding 0x80 to the logical drive id. 3925 */ 3926 adapter->read_ldidmap = 1; 3927 3928 return rval; 3929 } 3930 3931 3932 /** 3933 * mega_get_max_sgl() 3934 * @adapter - pointer to our soft state 3935 * 3936 * Find out the maximum number of scatter-gather elements supported by this 3937 * version of the firmware 3938 */ 3939 static void 3940 mega_get_max_sgl(adapter_t *adapter) 3941 { 3942 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3943 mbox_t *mbox; 3944 3945 mbox = (mbox_t *)raw_mbox; 3946 3947 memset(mbox, 0, sizeof(raw_mbox)); 3948 3949 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3950 3951 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3952 3953 raw_mbox[0] = MAIN_MISC_OPCODE; 3954 raw_mbox[2] = GET_MAX_SG_SUPPORT; 3955 3956 3957 if( issue_scb_block(adapter, raw_mbox) ) { 3958 /* 3959 * f/w does not support this command. Choose the default value 3960 */ 3961 adapter->sglen = MIN_SGLIST; 3962 } 3963 else { 3964 adapter->sglen = *((char *)adapter->mega_buffer); 3965 3966 /* 3967 * Make sure this is not more than the resources we are 3968 * planning to allocate 3969 */ 3970 if ( adapter->sglen > MAX_SGLIST ) 3971 adapter->sglen = MAX_SGLIST; 3972 } 3973 3974 return; 3975 } 3976 3977 3978 /** 3979 * mega_support_cluster() 3980 * @adapter - pointer to our soft state 3981 * 3982 * Find out if this firmware support cluster calls. 3983 */ 3984 static int 3985 mega_support_cluster(adapter_t *adapter) 3986 { 3987 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3988 mbox_t *mbox; 3989 3990 mbox = (mbox_t *)raw_mbox; 3991 3992 memset(mbox, 0, sizeof(raw_mbox)); 3993 3994 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3995 3996 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3997 3998 /* 3999 * Try to get the initiator id. This command will succeed iff the 4000 * clustering is available on this HBA. 4001 */ 4002 raw_mbox[0] = MEGA_GET_TARGET_ID; 4003 4004 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 4005 4006 /* 4007 * Cluster support available. Get the initiator target id. 4008 * Tell our id to mid-layer too. 4009 */ 4010 adapter->this_id = *(u32 *)adapter->mega_buffer; 4011 adapter->host->this_id = adapter->this_id; 4012 4013 return 1; 4014 } 4015 4016 return 0; 4017 } 4018 4019 #ifdef CONFIG_PROC_FS 4020 /** 4021 * mega_adapinq() 4022 * @adapter - pointer to our soft state 4023 * @dma_handle - DMA address of the buffer 4024 * 4025 * Issue internal commands while interrupts are available. 4026 * We only issue direct mailbox commands from within the driver. ioctl() 4027 * interface using these routines can issue passthru commands. 4028 */ 4029 static int 4030 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 4031 { 4032 megacmd_t mc; 4033 4034 memset(&mc, 0, sizeof(megacmd_t)); 4035 4036 if( adapter->flag & BOARD_40LD ) { 4037 mc.cmd = FC_NEW_CONFIG; 4038 mc.opcode = NC_SUBOP_ENQUIRY3; 4039 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 4040 } 4041 else { 4042 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 4043 } 4044 4045 mc.xferaddr = (u32)dma_handle; 4046 4047 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 4048 return -1; 4049 } 4050 4051 return 0; 4052 } 4053 4054 4055 /** mega_internal_dev_inquiry() 4056 * @adapter - pointer to our soft state 4057 * @ch - channel for this device 4058 * @tgt - ID of this device 4059 * @buf_dma_handle - DMA address of the buffer 4060 * 4061 * Issue the scsi inquiry for the specified device. 4062 */ 4063 static int 4064 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4065 dma_addr_t buf_dma_handle) 4066 { 4067 mega_passthru *pthru; 4068 dma_addr_t pthru_dma_handle; 4069 megacmd_t mc; 4070 int rval; 4071 struct pci_dev *pdev; 4072 4073 4074 /* 4075 * For all internal commands, the buffer must be allocated in <4GB 4076 * address range 4077 */ 4078 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4079 4080 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4081 &pthru_dma_handle); 4082 4083 if( pthru == NULL ) { 4084 free_local_pdev(pdev); 4085 return -1; 4086 } 4087 4088 pthru->timeout = 2; 4089 pthru->ars = 1; 4090 pthru->reqsenselen = 14; 4091 pthru->islogical = 0; 4092 4093 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4094 4095 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4096 4097 pthru->cdblen = 6; 4098 4099 pthru->cdb[0] = INQUIRY; 4100 pthru->cdb[1] = 0; 4101 pthru->cdb[2] = 0; 4102 pthru->cdb[3] = 0; 4103 pthru->cdb[4] = 255; 4104 pthru->cdb[5] = 0; 4105 4106 4107 pthru->dataxferaddr = (u32)buf_dma_handle; 4108 pthru->dataxferlen = 256; 4109 4110 memset(&mc, 0, sizeof(megacmd_t)); 4111 4112 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4113 mc.xferaddr = (u32)pthru_dma_handle; 4114 4115 rval = mega_internal_command(adapter, &mc, pthru); 4116 4117 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4118 pthru_dma_handle); 4119 4120 free_local_pdev(pdev); 4121 4122 return rval; 4123 } 4124 #endif 4125 4126 /** 4127 * mega_internal_command() 4128 * @adapter - pointer to our soft state 4129 * @mc - the mailbox command 4130 * @pthru - Passthru structure for DCDB commands 4131 * 4132 * Issue the internal commands in interrupt mode. 4133 * The last argument is the address of the passthru structure if the command 4134 * to be fired is a passthru command 4135 * 4136 * lockscope specifies whether the caller has already acquired the lock. Of 4137 * course, the caller must know which lock we are talking about. 4138 * 4139 * Note: parameter 'pthru' is null for non-passthru commands. 4140 */ 4141 static int 4142 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4143 { 4144 Scsi_Cmnd *scmd; 4145 struct scsi_device *sdev; 4146 scb_t *scb; 4147 int rval; 4148 4149 scmd = scsi_allocate_command(GFP_KERNEL); 4150 if (!scmd) 4151 return -ENOMEM; 4152 4153 /* 4154 * The internal commands share one command id and hence are 4155 * serialized. This is so because we want to reserve maximum number of 4156 * available command ids for the I/O commands. 4157 */ 4158 mutex_lock(&adapter->int_mtx); 4159 4160 scb = &adapter->int_scb; 4161 memset(scb, 0, sizeof(scb_t)); 4162 4163 sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL); 4164 scmd->device = sdev; 4165 4166 memset(adapter->int_cdb, 0, sizeof(adapter->int_cdb)); 4167 scmd->cmnd = adapter->int_cdb; 4168 scmd->device->host = adapter->host; 4169 scmd->host_scribble = (void *)scb; 4170 scmd->cmnd[0] = MEGA_INTERNAL_CMD; 4171 4172 scb->state |= SCB_ACTIVE; 4173 scb->cmd = scmd; 4174 4175 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4176 4177 /* 4178 * Is it a passthru command 4179 */ 4180 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 4181 4182 scb->pthru = pthru; 4183 } 4184 4185 scb->idx = CMDID_INT_CMDS; 4186 4187 megaraid_queue_lck(scmd, mega_internal_done); 4188 4189 wait_for_completion(&adapter->int_waitq); 4190 4191 rval = scmd->result; 4192 mc->status = scmd->result; 4193 kfree(sdev); 4194 4195 /* 4196 * Print a debug message for all failed commands. Applications can use 4197 * this information. 4198 */ 4199 if( scmd->result && trace_level ) { 4200 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", 4201 mc->cmd, mc->opcode, mc->subopcode, scmd->result); 4202 } 4203 4204 mutex_unlock(&adapter->int_mtx); 4205 4206 scsi_free_command(GFP_KERNEL, scmd); 4207 4208 return rval; 4209 } 4210 4211 4212 /** 4213 * mega_internal_done() 4214 * @scmd - internal scsi command 4215 * 4216 * Callback routine for internal commands. 4217 */ 4218 static void 4219 mega_internal_done(Scsi_Cmnd *scmd) 4220 { 4221 adapter_t *adapter; 4222 4223 adapter = (adapter_t *)scmd->device->host->hostdata; 4224 4225 complete(&adapter->int_waitq); 4226 4227 } 4228 4229 4230 static struct scsi_host_template megaraid_template = { 4231 .module = THIS_MODULE, 4232 .name = "MegaRAID", 4233 .proc_name = "megaraid_legacy", 4234 .info = megaraid_info, 4235 .queuecommand = megaraid_queue, 4236 .bios_param = megaraid_biosparam, 4237 .max_sectors = MAX_SECTORS_PER_IO, 4238 .can_queue = MAX_COMMANDS, 4239 .this_id = DEFAULT_INITIATOR_ID, 4240 .sg_tablesize = MAX_SGLIST, 4241 .cmd_per_lun = DEF_CMD_PER_LUN, 4242 .use_clustering = ENABLE_CLUSTERING, 4243 .eh_abort_handler = megaraid_abort, 4244 .eh_device_reset_handler = megaraid_reset, 4245 .eh_bus_reset_handler = megaraid_reset, 4246 .eh_host_reset_handler = megaraid_reset, 4247 }; 4248 4249 static int 4250 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4251 { 4252 struct Scsi_Host *host; 4253 adapter_t *adapter; 4254 unsigned long mega_baseport, tbase, flag = 0; 4255 u16 subsysid, subsysvid; 4256 u8 pci_bus, pci_dev_func; 4257 int irq, i, j; 4258 int error = -ENODEV; 4259 4260 if (pci_enable_device(pdev)) 4261 goto out; 4262 pci_set_master(pdev); 4263 4264 pci_bus = pdev->bus->number; 4265 pci_dev_func = pdev->devfn; 4266 4267 /* 4268 * The megaraid3 stuff reports the ID of the Intel part which is not 4269 * remotely specific to the megaraid 4270 */ 4271 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4272 u16 magic; 4273 /* 4274 * Don't fall over the Compaq management cards using the same 4275 * PCI identifier 4276 */ 4277 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4278 pdev->subsystem_device == 0xC000) 4279 return -ENODEV; 4280 /* Now check the magic signature byte */ 4281 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4282 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4283 return -ENODEV; 4284 /* Ok it is probably a megaraid */ 4285 } 4286 4287 /* 4288 * For these vendor and device ids, signature offsets are not 4289 * valid and 64 bit is implicit 4290 */ 4291 if (id->driver_data & BOARD_64BIT) 4292 flag |= BOARD_64BIT; 4293 else { 4294 u32 magic64; 4295 4296 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4297 if (magic64 == HBA_SIGNATURE_64BIT) 4298 flag |= BOARD_64BIT; 4299 } 4300 4301 subsysvid = pdev->subsystem_vendor; 4302 subsysid = pdev->subsystem_device; 4303 4304 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:", 4305 id->vendor, id->device, pci_bus); 4306 4307 printk("slot %d:func %d\n", 4308 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func)); 4309 4310 /* Read the base port and IRQ from PCI */ 4311 mega_baseport = pci_resource_start(pdev, 0); 4312 irq = pdev->irq; 4313 4314 tbase = mega_baseport; 4315 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4316 flag |= BOARD_MEMMAP; 4317 4318 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4319 printk(KERN_WARNING "megaraid: mem region busy!\n"); 4320 goto out_disable_device; 4321 } 4322 4323 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4324 if (!mega_baseport) { 4325 printk(KERN_WARNING 4326 "megaraid: could not map hba memory\n"); 4327 goto out_release_region; 4328 } 4329 } else { 4330 flag |= BOARD_IOMAP; 4331 mega_baseport += 0x10; 4332 4333 if (!request_region(mega_baseport, 16, "megaraid")) 4334 goto out_disable_device; 4335 } 4336 4337 /* Initialize SCSI Host structure */ 4338 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4339 if (!host) 4340 goto out_iounmap; 4341 4342 adapter = (adapter_t *)host->hostdata; 4343 memset(adapter, 0, sizeof(adapter_t)); 4344 4345 printk(KERN_NOTICE 4346 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4347 host->host_no, mega_baseport, irq); 4348 4349 adapter->base = mega_baseport; 4350 if (flag & BOARD_MEMMAP) 4351 adapter->mmio_base = (void __iomem *) mega_baseport; 4352 4353 INIT_LIST_HEAD(&adapter->free_list); 4354 INIT_LIST_HEAD(&adapter->pending_list); 4355 INIT_LIST_HEAD(&adapter->completed_list); 4356 4357 adapter->flag = flag; 4358 spin_lock_init(&adapter->lock); 4359 4360 host->cmd_per_lun = max_cmd_per_lun; 4361 host->max_sectors = max_sectors_per_io; 4362 4363 adapter->dev = pdev; 4364 adapter->host = host; 4365 4366 adapter->host->irq = irq; 4367 4368 if (flag & BOARD_MEMMAP) 4369 adapter->host->base = tbase; 4370 else { 4371 adapter->host->io_port = tbase; 4372 adapter->host->n_io_port = 16; 4373 } 4374 4375 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4376 4377 /* 4378 * Allocate buffer to issue internal commands. 4379 */ 4380 adapter->mega_buffer = pci_alloc_consistent(adapter->dev, 4381 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); 4382 if (!adapter->mega_buffer) { 4383 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4384 goto out_host_put; 4385 } 4386 4387 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL); 4388 if (!adapter->scb_list) { 4389 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4390 goto out_free_cmd_buffer; 4391 } 4392 4393 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4394 megaraid_isr_memmapped : megaraid_isr_iomapped, 4395 IRQF_SHARED, "megaraid", adapter)) { 4396 printk(KERN_WARNING 4397 "megaraid: Couldn't register IRQ %d!\n", irq); 4398 goto out_free_scb_list; 4399 } 4400 4401 if (mega_setup_mailbox(adapter)) 4402 goto out_free_irq; 4403 4404 if (mega_query_adapter(adapter)) 4405 goto out_free_mbox; 4406 4407 /* 4408 * Have checks for some buggy f/w 4409 */ 4410 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4411 /* 4412 * Which firmware 4413 */ 4414 if (!strcmp(adapter->fw_version, "3.00") || 4415 !strcmp(adapter->fw_version, "3.01")) { 4416 4417 printk( KERN_WARNING 4418 "megaraid: Your card is a Dell PERC " 4419 "2/SC RAID controller with " 4420 "firmware\nmegaraid: 3.00 or 3.01. " 4421 "This driver is known to have " 4422 "corruption issues\nmegaraid: with " 4423 "those firmware versions on this " 4424 "specific card. In order\nmegaraid: " 4425 "to protect your data, please upgrade " 4426 "your firmware to version\nmegaraid: " 4427 "3.10 or later, available from the " 4428 "Dell Technical Support web\n" 4429 "megaraid: site at\nhttp://support." 4430 "dell.com/us/en/filelib/download/" 4431 "index.asp?fileid=2940\n" 4432 ); 4433 } 4434 } 4435 4436 /* 4437 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4438 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4439 * support, since this firmware cannot handle 64 bit 4440 * addressing 4441 */ 4442 if ((subsysvid == PCI_VENDOR_ID_HP) && 4443 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4444 /* 4445 * which firmware 4446 */ 4447 if (!strcmp(adapter->fw_version, "H01.07") || 4448 !strcmp(adapter->fw_version, "H01.08") || 4449 !strcmp(adapter->fw_version, "H01.09") ) { 4450 printk(KERN_WARNING 4451 "megaraid: Firmware H.01.07, " 4452 "H.01.08, and H.01.09 on 1M/2M " 4453 "controllers\n" 4454 "megaraid: do not support 64 bit " 4455 "addressing.\nmegaraid: DISABLING " 4456 "64 bit support.\n"); 4457 adapter->flag &= ~BOARD_64BIT; 4458 } 4459 } 4460 4461 if (mega_is_bios_enabled(adapter)) 4462 mega_hbas[hba_count].is_bios_enabled = 1; 4463 mega_hbas[hba_count].hostdata_addr = adapter; 4464 4465 /* 4466 * Find out which channel is raid and which is scsi. This is 4467 * for ROMB support. 4468 */ 4469 mega_enum_raid_scsi(adapter); 4470 4471 /* 4472 * Find out if a logical drive is set as the boot drive. If 4473 * there is one, will make that as the first logical drive. 4474 * ROMB: Do we have to boot from a physical drive. Then all 4475 * the physical drives would appear before the logical disks. 4476 * Else, all the physical drives would be exported to the mid 4477 * layer after logical drives. 4478 */ 4479 mega_get_boot_drv(adapter); 4480 4481 if (adapter->boot_pdrv_enabled) { 4482 j = adapter->product_info.nchannels; 4483 for( i = 0; i < j; i++ ) 4484 adapter->logdrv_chan[i] = 0; 4485 for( i = j; i < NVIRT_CHAN + j; i++ ) 4486 adapter->logdrv_chan[i] = 1; 4487 } else { 4488 for (i = 0; i < NVIRT_CHAN; i++) 4489 adapter->logdrv_chan[i] = 1; 4490 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4491 adapter->logdrv_chan[i] = 0; 4492 adapter->mega_ch_class <<= NVIRT_CHAN; 4493 } 4494 4495 /* 4496 * Do we support random deletion and addition of logical 4497 * drives 4498 */ 4499 adapter->read_ldidmap = 0; /* set it after first logdrv 4500 delete cmd */ 4501 adapter->support_random_del = mega_support_random_del(adapter); 4502 4503 /* Initialize SCBs */ 4504 if (mega_init_scb(adapter)) 4505 goto out_free_mbox; 4506 4507 /* 4508 * Reset the pending commands counter 4509 */ 4510 atomic_set(&adapter->pend_cmds, 0); 4511 4512 /* 4513 * Reset the adapter quiescent flag 4514 */ 4515 atomic_set(&adapter->quiescent, 0); 4516 4517 hba_soft_state[hba_count] = adapter; 4518 4519 /* 4520 * Fill in the structure which needs to be passed back to the 4521 * application when it does an ioctl() for controller related 4522 * information. 4523 */ 4524 i = hba_count; 4525 4526 mcontroller[i].base = mega_baseport; 4527 mcontroller[i].irq = irq; 4528 mcontroller[i].numldrv = adapter->numldrv; 4529 mcontroller[i].pcibus = pci_bus; 4530 mcontroller[i].pcidev = id->device; 4531 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4532 mcontroller[i].pciid = -1; 4533 mcontroller[i].pcivendor = id->vendor; 4534 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4535 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4536 4537 4538 /* Set the Mode of addressing to 64 bit if we can */ 4539 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4540 pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 4541 adapter->has_64bit_addr = 1; 4542 } else { 4543 pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 4544 adapter->has_64bit_addr = 0; 4545 } 4546 4547 mutex_init(&adapter->int_mtx); 4548 init_completion(&adapter->int_waitq); 4549 4550 adapter->this_id = DEFAULT_INITIATOR_ID; 4551 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4552 4553 #if MEGA_HAVE_CLUSTERING 4554 /* 4555 * Is cluster support enabled on this controller 4556 * Note: In a cluster the HBAs ( the initiators ) will have 4557 * different target IDs and we cannot assume it to be 7. Call 4558 * to mega_support_cluster() will get the target ids also if 4559 * the cluster support is available 4560 */ 4561 adapter->has_cluster = mega_support_cluster(adapter); 4562 if (adapter->has_cluster) { 4563 printk(KERN_NOTICE 4564 "megaraid: Cluster driver, initiator id:%d\n", 4565 adapter->this_id); 4566 } 4567 #endif 4568 4569 pci_set_drvdata(pdev, host); 4570 4571 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4572 4573 error = scsi_add_host(host, &pdev->dev); 4574 if (error) 4575 goto out_free_mbox; 4576 4577 scsi_scan_host(host); 4578 hba_count++; 4579 return 0; 4580 4581 out_free_mbox: 4582 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4583 adapter->una_mbox64, adapter->una_mbox64_dma); 4584 out_free_irq: 4585 free_irq(adapter->host->irq, adapter); 4586 out_free_scb_list: 4587 kfree(adapter->scb_list); 4588 out_free_cmd_buffer: 4589 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4590 adapter->mega_buffer, adapter->buf_dma_handle); 4591 out_host_put: 4592 scsi_host_put(host); 4593 out_iounmap: 4594 if (flag & BOARD_MEMMAP) 4595 iounmap((void *)mega_baseport); 4596 out_release_region: 4597 if (flag & BOARD_MEMMAP) 4598 release_mem_region(tbase, 128); 4599 else 4600 release_region(mega_baseport, 16); 4601 out_disable_device: 4602 pci_disable_device(pdev); 4603 out: 4604 return error; 4605 } 4606 4607 static void 4608 __megaraid_shutdown(adapter_t *adapter) 4609 { 4610 u_char raw_mbox[sizeof(struct mbox_out)]; 4611 mbox_t *mbox = (mbox_t *)raw_mbox; 4612 int i; 4613 4614 /* Flush adapter cache */ 4615 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4616 raw_mbox[0] = FLUSH_ADAPTER; 4617 4618 free_irq(adapter->host->irq, adapter); 4619 4620 /* Issue a blocking (interrupts disabled) command to the card */ 4621 issue_scb_block(adapter, raw_mbox); 4622 4623 /* Flush disks cache */ 4624 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4625 raw_mbox[0] = FLUSH_SYSTEM; 4626 4627 /* Issue a blocking (interrupts disabled) command to the card */ 4628 issue_scb_block(adapter, raw_mbox); 4629 4630 if (atomic_read(&adapter->pend_cmds) > 0) 4631 printk(KERN_WARNING "megaraid: pending commands!!\n"); 4632 4633 /* 4634 * Have a delibrate delay to make sure all the caches are 4635 * actually flushed. 4636 */ 4637 for (i = 0; i <= 10; i++) 4638 mdelay(1000); 4639 } 4640 4641 static void 4642 megaraid_remove_one(struct pci_dev *pdev) 4643 { 4644 struct Scsi_Host *host = pci_get_drvdata(pdev); 4645 adapter_t *adapter = (adapter_t *)host->hostdata; 4646 4647 scsi_remove_host(host); 4648 4649 __megaraid_shutdown(adapter); 4650 4651 /* Free our resources */ 4652 if (adapter->flag & BOARD_MEMMAP) { 4653 iounmap((void *)adapter->base); 4654 release_mem_region(adapter->host->base, 128); 4655 } else 4656 release_region(adapter->base, 16); 4657 4658 mega_free_sgl(adapter); 4659 4660 #ifdef CONFIG_PROC_FS 4661 if (adapter->controller_proc_dir_entry) { 4662 remove_proc_entry("stat", adapter->controller_proc_dir_entry); 4663 remove_proc_entry("config", 4664 adapter->controller_proc_dir_entry); 4665 remove_proc_entry("mailbox", 4666 adapter->controller_proc_dir_entry); 4667 #if MEGA_HAVE_ENH_PROC 4668 remove_proc_entry("rebuild-rate", 4669 adapter->controller_proc_dir_entry); 4670 remove_proc_entry("battery-status", 4671 adapter->controller_proc_dir_entry); 4672 4673 remove_proc_entry("diskdrives-ch0", 4674 adapter->controller_proc_dir_entry); 4675 remove_proc_entry("diskdrives-ch1", 4676 adapter->controller_proc_dir_entry); 4677 remove_proc_entry("diskdrives-ch2", 4678 adapter->controller_proc_dir_entry); 4679 remove_proc_entry("diskdrives-ch3", 4680 adapter->controller_proc_dir_entry); 4681 4682 remove_proc_entry("raiddrives-0-9", 4683 adapter->controller_proc_dir_entry); 4684 remove_proc_entry("raiddrives-10-19", 4685 adapter->controller_proc_dir_entry); 4686 remove_proc_entry("raiddrives-20-29", 4687 adapter->controller_proc_dir_entry); 4688 remove_proc_entry("raiddrives-30-39", 4689 adapter->controller_proc_dir_entry); 4690 #endif 4691 { 4692 char buf[12] = { 0 }; 4693 sprintf(buf, "hba%d", adapter->host->host_no); 4694 remove_proc_entry(buf, mega_proc_dir_entry); 4695 } 4696 } 4697 #endif 4698 4699 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4700 adapter->mega_buffer, adapter->buf_dma_handle); 4701 kfree(adapter->scb_list); 4702 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4703 adapter->una_mbox64, adapter->una_mbox64_dma); 4704 4705 scsi_host_put(host); 4706 pci_disable_device(pdev); 4707 4708 hba_count--; 4709 } 4710 4711 static void 4712 megaraid_shutdown(struct pci_dev *pdev) 4713 { 4714 struct Scsi_Host *host = pci_get_drvdata(pdev); 4715 adapter_t *adapter = (adapter_t *)host->hostdata; 4716 4717 __megaraid_shutdown(adapter); 4718 } 4719 4720 static struct pci_device_id megaraid_pci_tbl[] = { 4721 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 4722 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4723 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 4724 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4725 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 4726 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4727 {0,} 4728 }; 4729 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 4730 4731 static struct pci_driver megaraid_pci_driver = { 4732 .name = "megaraid_legacy", 4733 .id_table = megaraid_pci_tbl, 4734 .probe = megaraid_probe_one, 4735 .remove = megaraid_remove_one, 4736 .shutdown = megaraid_shutdown, 4737 }; 4738 4739 static int __init megaraid_init(void) 4740 { 4741 int error; 4742 4743 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 4744 max_cmd_per_lun = MAX_CMD_PER_LUN; 4745 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 4746 max_mbox_busy_wait = MBOX_BUSY_WAIT; 4747 4748 #ifdef CONFIG_PROC_FS 4749 mega_proc_dir_entry = proc_mkdir("megaraid", NULL); 4750 if (!mega_proc_dir_entry) { 4751 printk(KERN_WARNING 4752 "megaraid: failed to create megaraid root\n"); 4753 } 4754 #endif 4755 error = pci_register_driver(&megaraid_pci_driver); 4756 if (error) { 4757 #ifdef CONFIG_PROC_FS 4758 remove_proc_entry("megaraid", NULL); 4759 #endif 4760 return error; 4761 } 4762 4763 /* 4764 * Register the driver as a character device, for applications 4765 * to access it for ioctls. 4766 * First argument (major) to register_chrdev implies a dynamic 4767 * major number allocation. 4768 */ 4769 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 4770 if (!major) { 4771 printk(KERN_WARNING 4772 "megaraid: failed to register char device\n"); 4773 } 4774 4775 return 0; 4776 } 4777 4778 static void __exit megaraid_exit(void) 4779 { 4780 /* 4781 * Unregister the character device interface to the driver. 4782 */ 4783 unregister_chrdev(major, "megadev_legacy"); 4784 4785 pci_unregister_driver(&megaraid_pci_driver); 4786 4787 #ifdef CONFIG_PROC_FS 4788 remove_proc_entry("megaraid", NULL); 4789 #endif 4790 } 4791 4792 module_init(megaraid_init); 4793 module_exit(megaraid_exit); 4794 4795 /* vi: set ts=8 sw=8 tw=78: */ 4796