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