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