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, cmd, 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 dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n", 1929 (aor == SCB_ABORT)? "ABORTING":"RESET", 1930 cmd->cmnd[0], cmd->device->channel, 1931 cmd->device->id, (u32)cmd->device->lun); 1932 1933 if(list_empty(&adapter->pending_list)) 1934 return FAILED; 1935 1936 list_for_each_safe(pos, next, &adapter->pending_list) { 1937 1938 scb = list_entry(pos, scb_t, list); 1939 1940 if (scb->cmd == cmd) { /* Found command */ 1941 1942 scb->state |= aor; 1943 1944 /* 1945 * Check if this command has firmware ownership. If 1946 * yes, we cannot reset this command. Whenever f/w 1947 * completes this command, we will return appropriate 1948 * status from ISR. 1949 */ 1950 if( scb->state & SCB_ISSUED ) { 1951 1952 dev_warn(&adapter->dev->dev, 1953 "%s[%x], fw owner\n", 1954 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1955 scb->idx); 1956 1957 return FAILED; 1958 } 1959 else { 1960 1961 /* 1962 * Not yet issued! Remove from the pending 1963 * list 1964 */ 1965 dev_warn(&adapter->dev->dev, 1966 "%s-[%x], driver owner\n", 1967 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1968 scb->idx); 1969 1970 mega_free_scb(adapter, scb); 1971 1972 if( aor == SCB_ABORT ) { 1973 cmd->result = (DID_ABORT << 16); 1974 } 1975 else { 1976 cmd->result = (DID_RESET << 16); 1977 } 1978 1979 list_add_tail(SCSI_LIST(cmd), 1980 &adapter->completed_list); 1981 1982 return SUCCESS; 1983 } 1984 } 1985 } 1986 1987 return FAILED; 1988 } 1989 1990 static inline int 1991 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 1992 { 1993 *pdev = pci_alloc_dev(NULL); 1994 1995 if( *pdev == NULL ) return -1; 1996 1997 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 1998 1999 if (dma_set_mask(&(*pdev)->dev, DMA_BIT_MASK(32)) != 0) { 2000 kfree(*pdev); 2001 return -1; 2002 } 2003 2004 return 0; 2005 } 2006 2007 static inline void 2008 free_local_pdev(struct pci_dev *pdev) 2009 { 2010 kfree(pdev); 2011 } 2012 2013 /** 2014 * mega_allocate_inquiry() 2015 * @dma_handle: handle returned for dma address 2016 * @pdev: handle to pci device 2017 * 2018 * allocates memory for inquiry structure 2019 */ 2020 static inline void * 2021 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2022 { 2023 return dma_alloc_coherent(&pdev->dev, sizeof(mega_inquiry3), 2024 dma_handle, GFP_KERNEL); 2025 } 2026 2027 2028 static inline void 2029 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2030 { 2031 dma_free_coherent(&pdev->dev, sizeof(mega_inquiry3), inquiry, 2032 dma_handle); 2033 } 2034 2035 2036 #ifdef CONFIG_PROC_FS 2037 /* Following code handles /proc fs */ 2038 2039 /** 2040 * proc_show_config() 2041 * @m: Synthetic file construction data 2042 * @v: File iterator 2043 * 2044 * Display configuration information about the controller. 2045 */ 2046 static int 2047 proc_show_config(struct seq_file *m, void *v) 2048 { 2049 2050 adapter_t *adapter = m->private; 2051 2052 seq_puts(m, MEGARAID_VERSION); 2053 if(adapter->product_info.product_name[0]) 2054 seq_printf(m, "%s\n", adapter->product_info.product_name); 2055 2056 seq_puts(m, "Controller Type: "); 2057 2058 if( adapter->flag & BOARD_MEMMAP ) 2059 seq_puts(m, "438/466/467/471/493/518/520/531/532\n"); 2060 else 2061 seq_puts(m, "418/428/434\n"); 2062 2063 if(adapter->flag & BOARD_40LD) 2064 seq_puts(m, "Controller Supports 40 Logical Drives\n"); 2065 2066 if(adapter->flag & BOARD_64BIT) 2067 seq_puts(m, "Controller capable of 64-bit memory addressing\n"); 2068 if( adapter->has_64bit_addr ) 2069 seq_puts(m, "Controller using 64-bit memory addressing\n"); 2070 else 2071 seq_puts(m, "Controller is not using 64-bit memory addressing\n"); 2072 2073 seq_printf(m, "Base = %08lx, Irq = %d, ", 2074 adapter->base, adapter->host->irq); 2075 2076 seq_printf(m, "Logical Drives = %d, Channels = %d\n", 2077 adapter->numldrv, adapter->product_info.nchannels); 2078 2079 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n", 2080 adapter->fw_version, adapter->bios_version, 2081 adapter->product_info.dram_size); 2082 2083 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2084 adapter->product_info.max_commands, adapter->max_cmds); 2085 2086 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb); 2087 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del); 2088 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); 2089 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv); 2090 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); 2091 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); 2092 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); 2093 seq_printf(m, "quiescent = %d\n", 2094 atomic_read(&adapter->quiescent)); 2095 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster); 2096 2097 seq_puts(m, "\nModule Parameters:\n"); 2098 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun); 2099 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io); 2100 return 0; 2101 } 2102 2103 /** 2104 * proc_show_stat() 2105 * @m: Synthetic file construction data 2106 * @v: File iterator 2107 * 2108 * Display statistical information about the I/O activity. 2109 */ 2110 static int 2111 proc_show_stat(struct seq_file *m, void *v) 2112 { 2113 adapter_t *adapter = m->private; 2114 #if MEGA_HAVE_STATS 2115 int i; 2116 #endif 2117 2118 seq_puts(m, "Statistical Information for this controller\n"); 2119 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); 2120 #if MEGA_HAVE_STATS 2121 for(i = 0; i < adapter->numldrv; i++) { 2122 seq_printf(m, "Logical Drive %d:\n", i); 2123 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n", 2124 adapter->nreads[i], adapter->nwrites[i]); 2125 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n", 2126 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2127 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n", 2128 adapter->rd_errors[i], adapter->wr_errors[i]); 2129 } 2130 #else 2131 seq_puts(m, "IO and error counters not compiled in driver.\n"); 2132 #endif 2133 return 0; 2134 } 2135 2136 2137 /** 2138 * proc_show_mbox() 2139 * @m: Synthetic file construction data 2140 * @v: File iterator 2141 * 2142 * Display mailbox information for the last command issued. This information 2143 * is good for debugging. 2144 */ 2145 static int 2146 proc_show_mbox(struct seq_file *m, void *v) 2147 { 2148 adapter_t *adapter = m->private; 2149 volatile mbox_t *mbox = adapter->mbox; 2150 2151 seq_puts(m, "Contents of Mail Box Structure\n"); 2152 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd); 2153 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid); 2154 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors); 2155 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba); 2156 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr); 2157 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv); 2158 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements); 2159 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy); 2160 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status); 2161 return 0; 2162 } 2163 2164 2165 /** 2166 * proc_show_rebuild_rate() 2167 * @m: Synthetic file construction data 2168 * @v: File iterator 2169 * 2170 * Display current rebuild rate 2171 */ 2172 static int 2173 proc_show_rebuild_rate(struct seq_file *m, void *v) 2174 { 2175 adapter_t *adapter = m->private; 2176 dma_addr_t dma_handle; 2177 caddr_t inquiry; 2178 struct pci_dev *pdev; 2179 2180 if( make_local_pdev(adapter, &pdev) != 0 ) 2181 return 0; 2182 2183 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2184 goto free_pdev; 2185 2186 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2187 seq_puts(m, "Adapter inquiry failed.\n"); 2188 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2189 goto free_inquiry; 2190 } 2191 2192 if( adapter->flag & BOARD_40LD ) 2193 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2194 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2195 else 2196 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2197 ((mraid_ext_inquiry *) 2198 inquiry)->raid_inq.adapter_info.rebuild_rate); 2199 2200 free_inquiry: 2201 mega_free_inquiry(inquiry, dma_handle, pdev); 2202 free_pdev: 2203 free_local_pdev(pdev); 2204 return 0; 2205 } 2206 2207 2208 /** 2209 * proc_show_battery() 2210 * @m: Synthetic file construction data 2211 * @v: File iterator 2212 * 2213 * Display information about the battery module on the controller. 2214 */ 2215 static int 2216 proc_show_battery(struct seq_file *m, void *v) 2217 { 2218 adapter_t *adapter = m->private; 2219 dma_addr_t dma_handle; 2220 caddr_t inquiry; 2221 struct pci_dev *pdev; 2222 u8 battery_status; 2223 2224 if( make_local_pdev(adapter, &pdev) != 0 ) 2225 return 0; 2226 2227 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2228 goto free_pdev; 2229 2230 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2231 seq_puts(m, "Adapter inquiry failed.\n"); 2232 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2233 goto free_inquiry; 2234 } 2235 2236 if( adapter->flag & BOARD_40LD ) { 2237 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2238 } 2239 else { 2240 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2241 raid_inq.adapter_info.battery_status; 2242 } 2243 2244 /* 2245 * Decode the battery status 2246 */ 2247 seq_printf(m, "Battery Status:[%d]", battery_status); 2248 2249 if(battery_status == MEGA_BATT_CHARGE_DONE) 2250 seq_puts(m, " Charge Done"); 2251 2252 if(battery_status & MEGA_BATT_MODULE_MISSING) 2253 seq_puts(m, " Module Missing"); 2254 2255 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2256 seq_puts(m, " Low Voltage"); 2257 2258 if(battery_status & MEGA_BATT_TEMP_HIGH) 2259 seq_puts(m, " Temperature High"); 2260 2261 if(battery_status & MEGA_BATT_PACK_MISSING) 2262 seq_puts(m, " Pack Missing"); 2263 2264 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2265 seq_puts(m, " Charge In-progress"); 2266 2267 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2268 seq_puts(m, " Charge Fail"); 2269 2270 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2271 seq_puts(m, " Cycles Exceeded"); 2272 2273 seq_putc(m, '\n'); 2274 2275 free_inquiry: 2276 mega_free_inquiry(inquiry, dma_handle, pdev); 2277 free_pdev: 2278 free_local_pdev(pdev); 2279 return 0; 2280 } 2281 2282 2283 /* 2284 * Display scsi inquiry 2285 */ 2286 static void 2287 mega_print_inquiry(struct seq_file *m, char *scsi_inq) 2288 { 2289 int i; 2290 2291 seq_puts(m, " Vendor: "); 2292 seq_write(m, scsi_inq + 8, 8); 2293 seq_puts(m, " Model: "); 2294 seq_write(m, scsi_inq + 16, 16); 2295 seq_puts(m, " Rev: "); 2296 seq_write(m, scsi_inq + 32, 4); 2297 seq_putc(m, '\n'); 2298 2299 i = scsi_inq[0] & 0x1f; 2300 seq_printf(m, " Type: %s ", scsi_device_type(i)); 2301 2302 seq_printf(m, " ANSI SCSI revision: %02x", 2303 scsi_inq[2] & 0x07); 2304 2305 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2306 seq_puts(m, " CCS\n"); 2307 else 2308 seq_putc(m, '\n'); 2309 } 2310 2311 /** 2312 * proc_show_pdrv() 2313 * @m: Synthetic file construction data 2314 * @adapter: pointer to our soft state 2315 * @channel: channel 2316 * 2317 * Display information about the physical drives. 2318 */ 2319 static int 2320 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel) 2321 { 2322 dma_addr_t dma_handle; 2323 char *scsi_inq; 2324 dma_addr_t scsi_inq_dma_handle; 2325 caddr_t inquiry; 2326 struct pci_dev *pdev; 2327 u8 *pdrv_state; 2328 u8 state; 2329 int tgt; 2330 int max_channels; 2331 int i; 2332 2333 if( make_local_pdev(adapter, &pdev) != 0 ) 2334 return 0; 2335 2336 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2337 goto free_pdev; 2338 2339 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2340 seq_puts(m, "Adapter inquiry failed.\n"); 2341 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2342 goto free_inquiry; 2343 } 2344 2345 2346 scsi_inq = dma_alloc_coherent(&pdev->dev, 256, &scsi_inq_dma_handle, 2347 GFP_KERNEL); 2348 if( scsi_inq == NULL ) { 2349 seq_puts(m, "memory not available for scsi inq.\n"); 2350 goto free_inquiry; 2351 } 2352 2353 if( adapter->flag & BOARD_40LD ) { 2354 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2355 } 2356 else { 2357 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2358 raid_inq.pdrv_info.pdrv_state; 2359 } 2360 2361 max_channels = adapter->product_info.nchannels; 2362 2363 if( channel >= max_channels ) { 2364 goto free_pci; 2365 } 2366 2367 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2368 2369 i = channel*16 + tgt; 2370 2371 state = *(pdrv_state + i); 2372 switch( state & 0x0F ) { 2373 case PDRV_ONLINE: 2374 seq_printf(m, "Channel:%2d Id:%2d State: Online", 2375 channel, tgt); 2376 break; 2377 2378 case PDRV_FAILED: 2379 seq_printf(m, "Channel:%2d Id:%2d State: Failed", 2380 channel, tgt); 2381 break; 2382 2383 case PDRV_RBLD: 2384 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild", 2385 channel, tgt); 2386 break; 2387 2388 case PDRV_HOTSPARE: 2389 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare", 2390 channel, tgt); 2391 break; 2392 2393 default: 2394 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured", 2395 channel, tgt); 2396 break; 2397 } 2398 2399 /* 2400 * This interface displays inquiries for disk drives 2401 * only. Inquries for logical drives and non-disk 2402 * devices are available through /proc/scsi/scsi 2403 */ 2404 memset(scsi_inq, 0, 256); 2405 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2406 scsi_inq_dma_handle) || 2407 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2408 continue; 2409 } 2410 2411 /* 2412 * Check for overflow. We print less than 240 2413 * characters for inquiry 2414 */ 2415 seq_puts(m, ".\n"); 2416 mega_print_inquiry(m, scsi_inq); 2417 } 2418 2419 free_pci: 2420 dma_free_coherent(&pdev->dev, 256, scsi_inq, scsi_inq_dma_handle); 2421 free_inquiry: 2422 mega_free_inquiry(inquiry, dma_handle, pdev); 2423 free_pdev: 2424 free_local_pdev(pdev); 2425 return 0; 2426 } 2427 2428 /** 2429 * proc_show_pdrv_ch0() 2430 * @m: Synthetic file construction data 2431 * @v: File iterator 2432 * 2433 * Display information about the physical drives on physical channel 0. 2434 */ 2435 static int 2436 proc_show_pdrv_ch0(struct seq_file *m, void *v) 2437 { 2438 return proc_show_pdrv(m, m->private, 0); 2439 } 2440 2441 2442 /** 2443 * proc_show_pdrv_ch1() 2444 * @m: Synthetic file construction data 2445 * @v: File iterator 2446 * 2447 * Display information about the physical drives on physical channel 1. 2448 */ 2449 static int 2450 proc_show_pdrv_ch1(struct seq_file *m, void *v) 2451 { 2452 return proc_show_pdrv(m, m->private, 1); 2453 } 2454 2455 2456 /** 2457 * proc_show_pdrv_ch2() 2458 * @m: Synthetic file construction data 2459 * @v: File iterator 2460 * 2461 * Display information about the physical drives on physical channel 2. 2462 */ 2463 static int 2464 proc_show_pdrv_ch2(struct seq_file *m, void *v) 2465 { 2466 return proc_show_pdrv(m, m->private, 2); 2467 } 2468 2469 2470 /** 2471 * proc_show_pdrv_ch3() 2472 * @m: Synthetic file construction data 2473 * @v: File iterator 2474 * 2475 * Display information about the physical drives on physical channel 3. 2476 */ 2477 static int 2478 proc_show_pdrv_ch3(struct seq_file *m, void *v) 2479 { 2480 return proc_show_pdrv(m, m->private, 3); 2481 } 2482 2483 2484 /** 2485 * proc_show_rdrv() 2486 * @m: Synthetic file construction data 2487 * @adapter: pointer to our soft state 2488 * @start: starting logical drive to display 2489 * @end: ending logical drive to display 2490 * 2491 * We do not print the inquiry information since its already available through 2492 * /proc/scsi/scsi interface 2493 */ 2494 static int 2495 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end ) 2496 { 2497 dma_addr_t dma_handle; 2498 logdrv_param *lparam; 2499 megacmd_t mc; 2500 char *disk_array; 2501 dma_addr_t disk_array_dma_handle; 2502 caddr_t inquiry; 2503 struct pci_dev *pdev; 2504 u8 *rdrv_state; 2505 int num_ldrv; 2506 u32 array_sz; 2507 int i; 2508 2509 if( make_local_pdev(adapter, &pdev) != 0 ) 2510 return 0; 2511 2512 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2513 goto free_pdev; 2514 2515 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2516 seq_puts(m, "Adapter inquiry failed.\n"); 2517 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2518 goto free_inquiry; 2519 } 2520 2521 memset(&mc, 0, sizeof(megacmd_t)); 2522 2523 if( adapter->flag & BOARD_40LD ) { 2524 array_sz = sizeof(disk_array_40ld); 2525 2526 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2527 2528 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2529 } 2530 else { 2531 array_sz = sizeof(disk_array_8ld); 2532 2533 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2534 raid_inq.logdrv_info.ldrv_state; 2535 2536 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2537 raid_inq.logdrv_info.num_ldrv; 2538 } 2539 2540 disk_array = dma_alloc_coherent(&pdev->dev, array_sz, 2541 &disk_array_dma_handle, GFP_KERNEL); 2542 2543 if( disk_array == NULL ) { 2544 seq_puts(m, "memory not available.\n"); 2545 goto free_inquiry; 2546 } 2547 2548 mc.xferaddr = (u32)disk_array_dma_handle; 2549 2550 if( adapter->flag & BOARD_40LD ) { 2551 mc.cmd = FC_NEW_CONFIG; 2552 mc.opcode = OP_DCMD_READ_CONFIG; 2553 2554 if( mega_internal_command(adapter, &mc, NULL) ) { 2555 seq_puts(m, "40LD read config failed.\n"); 2556 goto free_pci; 2557 } 2558 2559 } 2560 else { 2561 mc.cmd = NEW_READ_CONFIG_8LD; 2562 2563 if( mega_internal_command(adapter, &mc, NULL) ) { 2564 mc.cmd = READ_CONFIG_8LD; 2565 if( mega_internal_command(adapter, &mc, NULL) ) { 2566 seq_puts(m, "8LD read config failed.\n"); 2567 goto free_pci; 2568 } 2569 } 2570 } 2571 2572 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 2573 2574 if( adapter->flag & BOARD_40LD ) { 2575 lparam = 2576 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 2577 } 2578 else { 2579 lparam = 2580 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 2581 } 2582 2583 /* 2584 * Check for overflow. We print less than 240 characters for 2585 * information about each logical drive. 2586 */ 2587 seq_printf(m, "Logical drive:%2d:, ", i); 2588 2589 switch( rdrv_state[i] & 0x0F ) { 2590 case RDRV_OFFLINE: 2591 seq_puts(m, "state: offline"); 2592 break; 2593 case RDRV_DEGRADED: 2594 seq_puts(m, "state: degraded"); 2595 break; 2596 case RDRV_OPTIMAL: 2597 seq_puts(m, "state: optimal"); 2598 break; 2599 case RDRV_DELETED: 2600 seq_puts(m, "state: deleted"); 2601 break; 2602 default: 2603 seq_puts(m, "state: unknown"); 2604 break; 2605 } 2606 2607 /* 2608 * Check if check consistency or initialization is going on 2609 * for this logical drive. 2610 */ 2611 if( (rdrv_state[i] & 0xF0) == 0x20 ) 2612 seq_puts(m, ", check-consistency in progress"); 2613 else if( (rdrv_state[i] & 0xF0) == 0x10 ) 2614 seq_puts(m, ", initialization in progress"); 2615 2616 seq_putc(m, '\n'); 2617 2618 seq_printf(m, "Span depth:%3d, ", lparam->span_depth); 2619 seq_printf(m, "RAID level:%3d, ", lparam->level); 2620 seq_printf(m, "Stripe size:%3d, ", 2621 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 2622 seq_printf(m, "Row size:%3d\n", lparam->row_size); 2623 2624 seq_puts(m, "Read Policy: "); 2625 switch(lparam->read_ahead) { 2626 case NO_READ_AHEAD: 2627 seq_puts(m, "No read ahead, "); 2628 break; 2629 case READ_AHEAD: 2630 seq_puts(m, "Read ahead, "); 2631 break; 2632 case ADAP_READ_AHEAD: 2633 seq_puts(m, "Adaptive, "); 2634 break; 2635 2636 } 2637 2638 seq_puts(m, "Write Policy: "); 2639 switch(lparam->write_mode) { 2640 case WRMODE_WRITE_THRU: 2641 seq_puts(m, "Write thru, "); 2642 break; 2643 case WRMODE_WRITE_BACK: 2644 seq_puts(m, "Write back, "); 2645 break; 2646 } 2647 2648 seq_puts(m, "Cache Policy: "); 2649 switch(lparam->direct_io) { 2650 case CACHED_IO: 2651 seq_puts(m, "Cached IO\n\n"); 2652 break; 2653 case DIRECT_IO: 2654 seq_puts(m, "Direct IO\n\n"); 2655 break; 2656 } 2657 } 2658 2659 free_pci: 2660 dma_free_coherent(&pdev->dev, array_sz, disk_array, 2661 disk_array_dma_handle); 2662 free_inquiry: 2663 mega_free_inquiry(inquiry, dma_handle, pdev); 2664 free_pdev: 2665 free_local_pdev(pdev); 2666 return 0; 2667 } 2668 2669 /** 2670 * proc_show_rdrv_10() 2671 * @m: Synthetic file construction data 2672 * @v: File iterator 2673 * 2674 * Display real time information about the logical drives 0 through 9. 2675 */ 2676 static int 2677 proc_show_rdrv_10(struct seq_file *m, void *v) 2678 { 2679 return proc_show_rdrv(m, m->private, 0, 9); 2680 } 2681 2682 2683 /** 2684 * proc_show_rdrv_20() 2685 * @m: Synthetic file construction data 2686 * @v: File iterator 2687 * 2688 * Display real time information about the logical drives 0 through 9. 2689 */ 2690 static int 2691 proc_show_rdrv_20(struct seq_file *m, void *v) 2692 { 2693 return proc_show_rdrv(m, m->private, 10, 19); 2694 } 2695 2696 2697 /** 2698 * proc_show_rdrv_30() 2699 * @m: Synthetic file construction data 2700 * @v: File iterator 2701 * 2702 * Display real time information about the logical drives 0 through 9. 2703 */ 2704 static int 2705 proc_show_rdrv_30(struct seq_file *m, void *v) 2706 { 2707 return proc_show_rdrv(m, m->private, 20, 29); 2708 } 2709 2710 2711 /** 2712 * proc_show_rdrv_40() 2713 * @m: Synthetic file construction data 2714 * @v: File iterator 2715 * 2716 * Display real time information about the logical drives 0 through 9. 2717 */ 2718 static int 2719 proc_show_rdrv_40(struct seq_file *m, void *v) 2720 { 2721 return proc_show_rdrv(m, m->private, 30, 39); 2722 } 2723 2724 /** 2725 * mega_create_proc_entry() 2726 * @index: index in soft state array 2727 * @parent: parent node for this /proc entry 2728 * 2729 * Creates /proc entries for our controllers. 2730 */ 2731 static void 2732 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2733 { 2734 adapter_t *adapter = hba_soft_state[index]; 2735 struct proc_dir_entry *dir; 2736 u8 string[16]; 2737 2738 sprintf(string, "hba%d", adapter->host->host_no); 2739 dir = proc_mkdir_data(string, 0, parent, adapter); 2740 if (!dir) { 2741 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n"); 2742 return; 2743 } 2744 2745 proc_create_single_data("config", S_IRUSR, dir, 2746 proc_show_config, adapter); 2747 proc_create_single_data("stat", S_IRUSR, dir, 2748 proc_show_stat, adapter); 2749 proc_create_single_data("mailbox", S_IRUSR, dir, 2750 proc_show_mbox, adapter); 2751 #if MEGA_HAVE_ENH_PROC 2752 proc_create_single_data("rebuild-rate", S_IRUSR, dir, 2753 proc_show_rebuild_rate, adapter); 2754 proc_create_single_data("battery-status", S_IRUSR, dir, 2755 proc_show_battery, adapter); 2756 proc_create_single_data("diskdrives-ch0", S_IRUSR, dir, 2757 proc_show_pdrv_ch0, adapter); 2758 proc_create_single_data("diskdrives-ch1", S_IRUSR, dir, 2759 proc_show_pdrv_ch1, adapter); 2760 proc_create_single_data("diskdrives-ch2", S_IRUSR, dir, 2761 proc_show_pdrv_ch2, adapter); 2762 proc_create_single_data("diskdrives-ch3", S_IRUSR, dir, 2763 proc_show_pdrv_ch3, adapter); 2764 proc_create_single_data("raiddrives-0-9", S_IRUSR, dir, 2765 proc_show_rdrv_10, adapter); 2766 proc_create_single_data("raiddrives-10-19", S_IRUSR, dir, 2767 proc_show_rdrv_20, adapter); 2768 proc_create_single_data("raiddrives-20-29", S_IRUSR, dir, 2769 proc_show_rdrv_30, adapter); 2770 proc_create_single_data("raiddrives-30-39", S_IRUSR, dir, 2771 proc_show_rdrv_40, adapter); 2772 #endif 2773 } 2774 2775 #else 2776 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2777 { 2778 } 2779 #endif 2780 2781 2782 /* 2783 * megaraid_biosparam() 2784 * 2785 * Return the disk geometry for a particular disk 2786 */ 2787 static int 2788 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 2789 sector_t capacity, int geom[]) 2790 { 2791 adapter_t *adapter; 2792 int heads; 2793 int sectors; 2794 int cylinders; 2795 2796 /* Get pointer to host config structure */ 2797 adapter = (adapter_t *)sdev->host->hostdata; 2798 2799 if (IS_RAID_CH(adapter, sdev->channel)) { 2800 /* Default heads (64) & sectors (32) */ 2801 heads = 64; 2802 sectors = 32; 2803 cylinders = (ulong)capacity / (heads * sectors); 2804 2805 /* 2806 * Handle extended translation size for logical drives 2807 * > 1Gb 2808 */ 2809 if ((ulong)capacity >= 0x200000) { 2810 heads = 255; 2811 sectors = 63; 2812 cylinders = (ulong)capacity / (heads * sectors); 2813 } 2814 2815 /* return result */ 2816 geom[0] = heads; 2817 geom[1] = sectors; 2818 geom[2] = cylinders; 2819 } 2820 else { 2821 if (scsi_partsize(bdev, capacity, geom)) 2822 return 0; 2823 2824 dev_info(&adapter->dev->dev, 2825 "invalid partition on this disk on channel %d\n", 2826 sdev->channel); 2827 2828 /* Default heads (64) & sectors (32) */ 2829 heads = 64; 2830 sectors = 32; 2831 cylinders = (ulong)capacity / (heads * sectors); 2832 2833 /* Handle extended translation size for logical drives > 1Gb */ 2834 if ((ulong)capacity >= 0x200000) { 2835 heads = 255; 2836 sectors = 63; 2837 cylinders = (ulong)capacity / (heads * sectors); 2838 } 2839 2840 /* return result */ 2841 geom[0] = heads; 2842 geom[1] = sectors; 2843 geom[2] = cylinders; 2844 } 2845 2846 return 0; 2847 } 2848 2849 /** 2850 * mega_init_scb() 2851 * @adapter: pointer to our soft state 2852 * 2853 * Allocate memory for the various pointers in the scb structures: 2854 * scatter-gather list pointer, passthru and extended passthru structure 2855 * pointers. 2856 */ 2857 static int 2858 mega_init_scb(adapter_t *adapter) 2859 { 2860 scb_t *scb; 2861 int i; 2862 2863 for( i = 0; i < adapter->max_cmds; i++ ) { 2864 2865 scb = &adapter->scb_list[i]; 2866 2867 scb->sgl64 = NULL; 2868 scb->sgl = NULL; 2869 scb->pthru = NULL; 2870 scb->epthru = NULL; 2871 } 2872 2873 for( i = 0; i < adapter->max_cmds; i++ ) { 2874 2875 scb = &adapter->scb_list[i]; 2876 2877 scb->idx = i; 2878 2879 scb->sgl64 = dma_alloc_coherent(&adapter->dev->dev, 2880 sizeof(mega_sgl64) * adapter->sglen, 2881 &scb->sgl_dma_addr, GFP_KERNEL); 2882 2883 scb->sgl = (mega_sglist *)scb->sgl64; 2884 2885 if( !scb->sgl ) { 2886 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n"); 2887 mega_free_sgl(adapter); 2888 return -1; 2889 } 2890 2891 scb->pthru = dma_alloc_coherent(&adapter->dev->dev, 2892 sizeof(mega_passthru), 2893 &scb->pthru_dma_addr, GFP_KERNEL); 2894 2895 if( !scb->pthru ) { 2896 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n"); 2897 mega_free_sgl(adapter); 2898 return -1; 2899 } 2900 2901 scb->epthru = dma_alloc_coherent(&adapter->dev->dev, 2902 sizeof(mega_ext_passthru), 2903 &scb->epthru_dma_addr, GFP_KERNEL); 2904 2905 if( !scb->epthru ) { 2906 dev_warn(&adapter->dev->dev, 2907 "Can't allocate extended passthru\n"); 2908 mega_free_sgl(adapter); 2909 return -1; 2910 } 2911 2912 2913 scb->dma_type = MEGA_DMA_TYPE_NONE; 2914 2915 /* 2916 * Link to free list 2917 * lock not required since we are loading the driver, so no 2918 * commands possible right now. 2919 */ 2920 scb->state = SCB_FREE; 2921 scb->cmd = NULL; 2922 list_add(&scb->list, &adapter->free_list); 2923 } 2924 2925 return 0; 2926 } 2927 2928 2929 /** 2930 * megadev_open() 2931 * @inode: unused 2932 * @filep: unused 2933 * 2934 * Routines for the character/ioctl interface to the driver. Find out if this 2935 * is a valid open. 2936 */ 2937 static int 2938 megadev_open (struct inode *inode, struct file *filep) 2939 { 2940 /* 2941 * Only allow superuser to access private ioctl interface 2942 */ 2943 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 2944 2945 return 0; 2946 } 2947 2948 2949 /** 2950 * megadev_ioctl() 2951 * @filep: Our device file 2952 * @cmd: ioctl command 2953 * @arg: user buffer 2954 * 2955 * ioctl entry point for our private ioctl interface. We move the data in from 2956 * the user space, prepare the command (if necessary, convert the old MIMD 2957 * ioctl to new ioctl command), and issue a synchronous command to the 2958 * controller. 2959 */ 2960 static int 2961 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 2962 { 2963 adapter_t *adapter; 2964 nitioctl_t uioc; 2965 int adapno; 2966 int rval; 2967 mega_passthru __user *upthru; /* user address for passthru */ 2968 mega_passthru *pthru; /* copy user passthru here */ 2969 dma_addr_t pthru_dma_hndl; 2970 void *data = NULL; /* data to be transferred */ 2971 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 2972 megacmd_t mc; 2973 #if MEGA_HAVE_STATS 2974 megastat_t __user *ustats = NULL; 2975 int num_ldrv = 0; 2976 #endif 2977 u32 uxferaddr = 0; 2978 struct pci_dev *pdev; 2979 2980 /* 2981 * Make sure only USCSICMD are issued through this interface. 2982 * MIMD application would still fire different command. 2983 */ 2984 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 2985 return -EINVAL; 2986 } 2987 2988 /* 2989 * Check and convert a possible MIMD command to NIT command. 2990 * mega_m_to_n() copies the data from the user space, so we do not 2991 * have to do it here. 2992 * NOTE: We will need some user address to copyout the data, therefore 2993 * the inteface layer will also provide us with the required user 2994 * addresses. 2995 */ 2996 memset(&uioc, 0, sizeof(nitioctl_t)); 2997 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 2998 return rval; 2999 3000 3001 switch( uioc.opcode ) { 3002 3003 case GET_DRIVER_VER: 3004 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3005 return (-EFAULT); 3006 3007 break; 3008 3009 case GET_N_ADAP: 3010 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3011 return (-EFAULT); 3012 3013 /* 3014 * Shucks. MIMD interface returns a positive value for number 3015 * of adapters. TODO: Change it to return 0 when there is no 3016 * applicatio using mimd interface. 3017 */ 3018 return hba_count; 3019 3020 case GET_ADAP_INFO: 3021 3022 /* 3023 * Which adapter 3024 */ 3025 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3026 return (-ENODEV); 3027 3028 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3029 sizeof(struct mcontroller)) ) 3030 return (-EFAULT); 3031 break; 3032 3033 #if MEGA_HAVE_STATS 3034 3035 case GET_STATS: 3036 /* 3037 * Which adapter 3038 */ 3039 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3040 return (-ENODEV); 3041 3042 adapter = hba_soft_state[adapno]; 3043 3044 ustats = uioc.uioc_uaddr; 3045 3046 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3047 return (-EFAULT); 3048 3049 /* 3050 * Check for the validity of the logical drive number 3051 */ 3052 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3053 3054 if( copy_to_user(ustats->nreads, adapter->nreads, 3055 num_ldrv*sizeof(u32)) ) 3056 return -EFAULT; 3057 3058 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3059 num_ldrv*sizeof(u32)) ) 3060 return -EFAULT; 3061 3062 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3063 num_ldrv*sizeof(u32)) ) 3064 return -EFAULT; 3065 3066 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3067 num_ldrv*sizeof(u32)) ) 3068 return -EFAULT; 3069 3070 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3071 num_ldrv*sizeof(u32)) ) 3072 return -EFAULT; 3073 3074 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3075 num_ldrv*sizeof(u32)) ) 3076 return -EFAULT; 3077 3078 return 0; 3079 3080 #endif 3081 case MBOX_CMD: 3082 3083 /* 3084 * Which adapter 3085 */ 3086 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3087 return (-ENODEV); 3088 3089 adapter = hba_soft_state[adapno]; 3090 3091 /* 3092 * Deletion of logical drive is a special case. The adapter 3093 * should be quiescent before this command is issued. 3094 */ 3095 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3096 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3097 3098 /* 3099 * Do we support this feature 3100 */ 3101 if( !adapter->support_random_del ) { 3102 dev_warn(&adapter->dev->dev, "logdrv " 3103 "delete on non-supporting F/W\n"); 3104 3105 return (-EINVAL); 3106 } 3107 3108 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3109 3110 if( rval == 0 ) { 3111 memset(&mc, 0, sizeof(megacmd_t)); 3112 3113 mc.status = rval; 3114 3115 rval = mega_n_to_m((void __user *)arg, &mc); 3116 } 3117 3118 return rval; 3119 } 3120 /* 3121 * This interface only support the regular passthru commands. 3122 * Reject extended passthru and 64-bit passthru 3123 */ 3124 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3125 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3126 3127 dev_warn(&adapter->dev->dev, "rejected passthru\n"); 3128 3129 return (-EINVAL); 3130 } 3131 3132 /* 3133 * For all internal commands, the buffer must be allocated in 3134 * <4GB address range 3135 */ 3136 if( make_local_pdev(adapter, &pdev) != 0 ) 3137 return -EIO; 3138 3139 /* Is it a passthru command or a DCMD */ 3140 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3141 /* Passthru commands */ 3142 3143 pthru = dma_alloc_coherent(&pdev->dev, 3144 sizeof(mega_passthru), 3145 &pthru_dma_hndl, GFP_KERNEL); 3146 3147 if( pthru == NULL ) { 3148 free_local_pdev(pdev); 3149 return (-ENOMEM); 3150 } 3151 3152 /* 3153 * The user passthru structure 3154 */ 3155 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; 3156 3157 /* 3158 * Copy in the user passthru here. 3159 */ 3160 if( copy_from_user(pthru, upthru, 3161 sizeof(mega_passthru)) ) { 3162 3163 dma_free_coherent(&pdev->dev, 3164 sizeof(mega_passthru), 3165 pthru, pthru_dma_hndl); 3166 3167 free_local_pdev(pdev); 3168 3169 return (-EFAULT); 3170 } 3171 3172 /* 3173 * Is there a data transfer 3174 */ 3175 if( pthru->dataxferlen ) { 3176 data = dma_alloc_coherent(&pdev->dev, 3177 pthru->dataxferlen, 3178 &data_dma_hndl, 3179 GFP_KERNEL); 3180 3181 if( data == NULL ) { 3182 dma_free_coherent(&pdev->dev, 3183 sizeof(mega_passthru), 3184 pthru, 3185 pthru_dma_hndl); 3186 3187 free_local_pdev(pdev); 3188 3189 return (-ENOMEM); 3190 } 3191 3192 /* 3193 * Save the user address and point the kernel 3194 * address at just allocated memory 3195 */ 3196 uxferaddr = pthru->dataxferaddr; 3197 pthru->dataxferaddr = data_dma_hndl; 3198 } 3199 3200 3201 /* 3202 * Is data coming down-stream 3203 */ 3204 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3205 /* 3206 * Get the user data 3207 */ 3208 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3209 pthru->dataxferlen) ) { 3210 rval = (-EFAULT); 3211 goto freemem_and_return; 3212 } 3213 } 3214 3215 memset(&mc, 0, sizeof(megacmd_t)); 3216 3217 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3218 mc.xferaddr = (u32)pthru_dma_hndl; 3219 3220 /* 3221 * Issue the command 3222 */ 3223 mega_internal_command(adapter, &mc, pthru); 3224 3225 rval = mega_n_to_m((void __user *)arg, &mc); 3226 3227 if( rval ) goto freemem_and_return; 3228 3229 3230 /* 3231 * Is data going up-stream 3232 */ 3233 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3234 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3235 pthru->dataxferlen) ) { 3236 rval = (-EFAULT); 3237 } 3238 } 3239 3240 /* 3241 * Send the request sense data also, irrespective of 3242 * whether the user has asked for it or not. 3243 */ 3244 if (copy_to_user(upthru->reqsensearea, 3245 pthru->reqsensearea, 14)) 3246 rval = -EFAULT; 3247 3248 freemem_and_return: 3249 if( pthru->dataxferlen ) { 3250 dma_free_coherent(&pdev->dev, 3251 pthru->dataxferlen, data, 3252 data_dma_hndl); 3253 } 3254 3255 dma_free_coherent(&pdev->dev, sizeof(mega_passthru), 3256 pthru, pthru_dma_hndl); 3257 3258 free_local_pdev(pdev); 3259 3260 return rval; 3261 } 3262 else { 3263 /* DCMD commands */ 3264 3265 /* 3266 * Is there a data transfer 3267 */ 3268 if( uioc.xferlen ) { 3269 data = dma_alloc_coherent(&pdev->dev, 3270 uioc.xferlen, 3271 &data_dma_hndl, 3272 GFP_KERNEL); 3273 3274 if( data == NULL ) { 3275 free_local_pdev(pdev); 3276 return (-ENOMEM); 3277 } 3278 3279 uxferaddr = MBOX(uioc)->xferaddr; 3280 } 3281 3282 /* 3283 * Is data coming down-stream 3284 */ 3285 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3286 /* 3287 * Get the user data 3288 */ 3289 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3290 uioc.xferlen) ) { 3291 3292 dma_free_coherent(&pdev->dev, 3293 uioc.xferlen, data, 3294 data_dma_hndl); 3295 3296 free_local_pdev(pdev); 3297 3298 return (-EFAULT); 3299 } 3300 } 3301 3302 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3303 3304 mc.xferaddr = (u32)data_dma_hndl; 3305 3306 /* 3307 * Issue the command 3308 */ 3309 mega_internal_command(adapter, &mc, NULL); 3310 3311 rval = mega_n_to_m((void __user *)arg, &mc); 3312 3313 if( rval ) { 3314 if( uioc.xferlen ) { 3315 dma_free_coherent(&pdev->dev, 3316 uioc.xferlen, data, 3317 data_dma_hndl); 3318 } 3319 3320 free_local_pdev(pdev); 3321 3322 return rval; 3323 } 3324 3325 /* 3326 * Is data going up-stream 3327 */ 3328 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3329 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3330 uioc.xferlen) ) { 3331 3332 rval = (-EFAULT); 3333 } 3334 } 3335 3336 if( uioc.xferlen ) { 3337 dma_free_coherent(&pdev->dev, uioc.xferlen, 3338 data, data_dma_hndl); 3339 } 3340 3341 free_local_pdev(pdev); 3342 3343 return rval; 3344 } 3345 3346 default: 3347 return (-EINVAL); 3348 } 3349 3350 return 0; 3351 } 3352 3353 static long 3354 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3355 { 3356 int ret; 3357 3358 mutex_lock(&megadev_mutex); 3359 ret = megadev_ioctl(filep, cmd, arg); 3360 mutex_unlock(&megadev_mutex); 3361 3362 return ret; 3363 } 3364 3365 /** 3366 * mega_m_to_n() 3367 * @arg: user address 3368 * @uioc: new ioctl structure 3369 * 3370 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3371 * structure 3372 * 3373 * Converts the older mimd ioctl structure to newer NIT structure 3374 */ 3375 static int 3376 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3377 { 3378 struct uioctl_t uioc_mimd; 3379 char signature[8] = {0}; 3380 u8 opcode; 3381 u8 subopcode; 3382 3383 3384 /* 3385 * check is the application conforms to NIT. We do not have to do much 3386 * in that case. 3387 * We exploit the fact that the signature is stored in the very 3388 * beginning of the structure. 3389 */ 3390 3391 if( copy_from_user(signature, arg, 7) ) 3392 return (-EFAULT); 3393 3394 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3395 3396 /* 3397 * NOTE NOTE: The nit ioctl is still under flux because of 3398 * change of mailbox definition, in HPE. No applications yet 3399 * use this interface and let's not have applications use this 3400 * interface till the new specifitions are in place. 3401 */ 3402 return -EINVAL; 3403 #if 0 3404 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3405 return (-EFAULT); 3406 return 0; 3407 #endif 3408 } 3409 3410 /* 3411 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3412 * 3413 * Get the user ioctl structure 3414 */ 3415 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3416 return (-EFAULT); 3417 3418 3419 /* 3420 * Get the opcode and subopcode for the commands 3421 */ 3422 opcode = uioc_mimd.ui.fcs.opcode; 3423 subopcode = uioc_mimd.ui.fcs.subopcode; 3424 3425 switch (opcode) { 3426 case 0x82: 3427 3428 switch (subopcode) { 3429 3430 case MEGAIOC_QDRVRVER: /* Query driver version */ 3431 uioc->opcode = GET_DRIVER_VER; 3432 uioc->uioc_uaddr = uioc_mimd.data; 3433 break; 3434 3435 case MEGAIOC_QNADAP: /* Get # of adapters */ 3436 uioc->opcode = GET_N_ADAP; 3437 uioc->uioc_uaddr = uioc_mimd.data; 3438 break; 3439 3440 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3441 uioc->opcode = GET_ADAP_INFO; 3442 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3443 uioc->uioc_uaddr = uioc_mimd.data; 3444 break; 3445 3446 default: 3447 return(-EINVAL); 3448 } 3449 3450 break; 3451 3452 3453 case 0x81: 3454 3455 uioc->opcode = MBOX_CMD; 3456 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3457 3458 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3459 3460 uioc->xferlen = uioc_mimd.ui.fcs.length; 3461 3462 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3463 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3464 3465 break; 3466 3467 case 0x80: 3468 3469 uioc->opcode = MBOX_CMD; 3470 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3471 3472 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3473 3474 /* 3475 * Choose the xferlen bigger of input and output data 3476 */ 3477 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3478 uioc_mimd.outlen : uioc_mimd.inlen; 3479 3480 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3481 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3482 3483 break; 3484 3485 default: 3486 return (-EINVAL); 3487 3488 } 3489 3490 return 0; 3491 } 3492 3493 /* 3494 * mega_n_to_m() 3495 * @arg: user address 3496 * @mc: mailbox command 3497 * 3498 * Updates the status information to the application, depending on application 3499 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3500 */ 3501 static int 3502 mega_n_to_m(void __user *arg, megacmd_t *mc) 3503 { 3504 nitioctl_t __user *uiocp; 3505 megacmd_t __user *umc; 3506 mega_passthru __user *upthru; 3507 struct uioctl_t __user *uioc_mimd; 3508 char signature[8] = {0}; 3509 3510 /* 3511 * check is the application conforms to NIT. 3512 */ 3513 if( copy_from_user(signature, arg, 7) ) 3514 return -EFAULT; 3515 3516 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3517 3518 uiocp = arg; 3519 3520 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3521 return (-EFAULT); 3522 3523 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3524 3525 umc = MBOX_P(uiocp); 3526 3527 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3528 return -EFAULT; 3529 3530 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3531 return (-EFAULT); 3532 } 3533 } 3534 else { 3535 uioc_mimd = arg; 3536 3537 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3538 return (-EFAULT); 3539 3540 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3541 3542 umc = (megacmd_t __user *)uioc_mimd->mbox; 3543 3544 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3545 return (-EFAULT); 3546 3547 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3548 return (-EFAULT); 3549 } 3550 } 3551 3552 return 0; 3553 } 3554 3555 3556 /* 3557 * MEGARAID 'FW' commands. 3558 */ 3559 3560 /** 3561 * mega_is_bios_enabled() 3562 * @adapter: pointer to our soft state 3563 * 3564 * issue command to find out if the BIOS is enabled for this controller 3565 */ 3566 static int 3567 mega_is_bios_enabled(adapter_t *adapter) 3568 { 3569 struct mbox_out mbox; 3570 unsigned char *raw_mbox = (u8 *)&mbox; 3571 3572 memset(&mbox, 0, sizeof(mbox)); 3573 3574 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3575 3576 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3577 3578 raw_mbox[0] = IS_BIOS_ENABLED; 3579 raw_mbox[2] = GET_BIOS; 3580 3581 issue_scb_block(adapter, raw_mbox); 3582 3583 return *(char *)adapter->mega_buffer; 3584 } 3585 3586 3587 /** 3588 * mega_enum_raid_scsi() 3589 * @adapter: pointer to our soft state 3590 * 3591 * Find out what channels are RAID/SCSI. This information is used to 3592 * differentiate the virtual channels and physical channels and to support 3593 * ROMB feature and non-disk devices. 3594 */ 3595 static void 3596 mega_enum_raid_scsi(adapter_t *adapter) 3597 { 3598 struct mbox_out mbox; 3599 unsigned char *raw_mbox = (u8 *)&mbox; 3600 int i; 3601 3602 memset(&mbox, 0, sizeof(mbox)); 3603 3604 /* 3605 * issue command to find out what channels are raid/scsi 3606 */ 3607 raw_mbox[0] = CHNL_CLASS; 3608 raw_mbox[2] = GET_CHNL_CLASS; 3609 3610 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3611 3612 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3613 3614 /* 3615 * Non-ROMB firmware fail this command, so all channels 3616 * must be shown RAID 3617 */ 3618 adapter->mega_ch_class = 0xFF; 3619 3620 if(!issue_scb_block(adapter, raw_mbox)) { 3621 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 3622 3623 } 3624 3625 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3626 if( (adapter->mega_ch_class >> i) & 0x01 ) { 3627 dev_info(&adapter->dev->dev, "channel[%d] is raid\n", 3628 i); 3629 } 3630 else { 3631 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n", 3632 i); 3633 } 3634 } 3635 3636 return; 3637 } 3638 3639 3640 /** 3641 * mega_get_boot_drv() 3642 * @adapter: pointer to our soft state 3643 * 3644 * Find out which device is the boot device. Note, any logical drive or any 3645 * phyical device (e.g., a CDROM) can be designated as a boot device. 3646 */ 3647 static void 3648 mega_get_boot_drv(adapter_t *adapter) 3649 { 3650 struct private_bios_data *prv_bios_data; 3651 struct mbox_out mbox; 3652 unsigned char *raw_mbox = (u8 *)&mbox; 3653 u16 cksum = 0; 3654 u8 *cksum_p; 3655 u8 boot_pdrv; 3656 int i; 3657 3658 memset(&mbox, 0, sizeof(mbox)); 3659 3660 raw_mbox[0] = BIOS_PVT_DATA; 3661 raw_mbox[2] = GET_BIOS_PVT_DATA; 3662 3663 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3664 3665 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3666 3667 adapter->boot_ldrv_enabled = 0; 3668 adapter->boot_ldrv = 0; 3669 3670 adapter->boot_pdrv_enabled = 0; 3671 adapter->boot_pdrv_ch = 0; 3672 adapter->boot_pdrv_tgt = 0; 3673 3674 if(issue_scb_block(adapter, raw_mbox) == 0) { 3675 prv_bios_data = 3676 (struct private_bios_data *)adapter->mega_buffer; 3677 3678 cksum = 0; 3679 cksum_p = (char *)prv_bios_data; 3680 for (i = 0; i < 14; i++ ) { 3681 cksum += (u16)(*cksum_p++); 3682 } 3683 3684 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 3685 3686 /* 3687 * If MSB is set, a physical drive is set as boot 3688 * device 3689 */ 3690 if( prv_bios_data->boot_drv & 0x80 ) { 3691 adapter->boot_pdrv_enabled = 1; 3692 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 3693 adapter->boot_pdrv_ch = boot_pdrv / 16; 3694 adapter->boot_pdrv_tgt = boot_pdrv % 16; 3695 } 3696 else { 3697 adapter->boot_ldrv_enabled = 1; 3698 adapter->boot_ldrv = prv_bios_data->boot_drv; 3699 } 3700 } 3701 } 3702 3703 } 3704 3705 /** 3706 * mega_support_random_del() 3707 * @adapter: pointer to our soft state 3708 * 3709 * Find out if this controller supports random deletion and addition of 3710 * logical drives 3711 */ 3712 static int 3713 mega_support_random_del(adapter_t *adapter) 3714 { 3715 struct mbox_out mbox; 3716 unsigned char *raw_mbox = (u8 *)&mbox; 3717 int rval; 3718 3719 memset(&mbox, 0, sizeof(mbox)); 3720 3721 /* 3722 * issue command 3723 */ 3724 raw_mbox[0] = FC_DEL_LOGDRV; 3725 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 3726 3727 rval = issue_scb_block(adapter, raw_mbox); 3728 3729 return !rval; 3730 } 3731 3732 3733 /** 3734 * mega_support_ext_cdb() 3735 * @adapter: pointer to our soft state 3736 * 3737 * Find out if this firmware support cdblen > 10 3738 */ 3739 static int 3740 mega_support_ext_cdb(adapter_t *adapter) 3741 { 3742 struct mbox_out mbox; 3743 unsigned char *raw_mbox = (u8 *)&mbox; 3744 int rval; 3745 3746 memset(&mbox, 0, sizeof(mbox)); 3747 /* 3748 * issue command to find out if controller supports extended CDBs. 3749 */ 3750 raw_mbox[0] = 0xA4; 3751 raw_mbox[2] = 0x16; 3752 3753 rval = issue_scb_block(adapter, raw_mbox); 3754 3755 return !rval; 3756 } 3757 3758 3759 /** 3760 * mega_del_logdrv() 3761 * @adapter: pointer to our soft state 3762 * @logdrv: logical drive to be deleted 3763 * 3764 * Delete the specified logical drive. It is the responsibility of the user 3765 * app to let the OS know about this operation. 3766 */ 3767 static int 3768 mega_del_logdrv(adapter_t *adapter, int logdrv) 3769 { 3770 unsigned long flags; 3771 scb_t *scb; 3772 int rval; 3773 3774 /* 3775 * Stop sending commands to the controller, queue them internally. 3776 * When deletion is complete, ISR will flush the queue. 3777 */ 3778 atomic_set(&adapter->quiescent, 1); 3779 3780 /* 3781 * Wait till all the issued commands are complete and there are no 3782 * commands in the pending queue 3783 */ 3784 while (atomic_read(&adapter->pend_cmds) > 0 || 3785 !list_empty(&adapter->pending_list)) 3786 msleep(1000); /* sleep for 1s */ 3787 3788 rval = mega_do_del_logdrv(adapter, logdrv); 3789 3790 spin_lock_irqsave(&adapter->lock, flags); 3791 3792 /* 3793 * If delete operation was successful, add 0x80 to the logical drive 3794 * ids for commands in the pending queue. 3795 */ 3796 if (adapter->read_ldidmap) { 3797 struct list_head *pos; 3798 list_for_each(pos, &adapter->pending_list) { 3799 scb = list_entry(pos, scb_t, list); 3800 if (scb->pthru->logdrv < 0x80 ) 3801 scb->pthru->logdrv += 0x80; 3802 } 3803 } 3804 3805 atomic_set(&adapter->quiescent, 0); 3806 3807 mega_runpendq(adapter); 3808 3809 spin_unlock_irqrestore(&adapter->lock, flags); 3810 3811 return rval; 3812 } 3813 3814 3815 static int 3816 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 3817 { 3818 megacmd_t mc; 3819 int rval; 3820 3821 memset( &mc, 0, sizeof(megacmd_t)); 3822 3823 mc.cmd = FC_DEL_LOGDRV; 3824 mc.opcode = OP_DEL_LOGDRV; 3825 mc.subopcode = logdrv; 3826 3827 rval = mega_internal_command(adapter, &mc, NULL); 3828 3829 /* log this event */ 3830 if(rval) { 3831 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv); 3832 return rval; 3833 } 3834 3835 /* 3836 * After deleting first logical drive, the logical drives must be 3837 * addressed by adding 0x80 to the logical drive id. 3838 */ 3839 adapter->read_ldidmap = 1; 3840 3841 return rval; 3842 } 3843 3844 3845 /** 3846 * mega_get_max_sgl() 3847 * @adapter: pointer to our soft state 3848 * 3849 * Find out the maximum number of scatter-gather elements supported by this 3850 * version of the firmware 3851 */ 3852 static void 3853 mega_get_max_sgl(adapter_t *adapter) 3854 { 3855 struct mbox_out mbox; 3856 unsigned char *raw_mbox = (u8 *)&mbox; 3857 3858 memset(&mbox, 0, sizeof(mbox)); 3859 3860 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3861 3862 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3863 3864 raw_mbox[0] = MAIN_MISC_OPCODE; 3865 raw_mbox[2] = GET_MAX_SG_SUPPORT; 3866 3867 3868 if( issue_scb_block(adapter, raw_mbox) ) { 3869 /* 3870 * f/w does not support this command. Choose the default value 3871 */ 3872 adapter->sglen = MIN_SGLIST; 3873 } 3874 else { 3875 adapter->sglen = *((char *)adapter->mega_buffer); 3876 3877 /* 3878 * Make sure this is not more than the resources we are 3879 * planning to allocate 3880 */ 3881 if ( adapter->sglen > MAX_SGLIST ) 3882 adapter->sglen = MAX_SGLIST; 3883 } 3884 3885 return; 3886 } 3887 3888 3889 /** 3890 * mega_support_cluster() 3891 * @adapter: pointer to our soft state 3892 * 3893 * Find out if this firmware support cluster calls. 3894 */ 3895 static int 3896 mega_support_cluster(adapter_t *adapter) 3897 { 3898 struct mbox_out mbox; 3899 unsigned char *raw_mbox = (u8 *)&mbox; 3900 3901 memset(&mbox, 0, sizeof(mbox)); 3902 3903 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3904 3905 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3906 3907 /* 3908 * Try to get the initiator id. This command will succeed iff the 3909 * clustering is available on this HBA. 3910 */ 3911 raw_mbox[0] = MEGA_GET_TARGET_ID; 3912 3913 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 3914 3915 /* 3916 * Cluster support available. Get the initiator target id. 3917 * Tell our id to mid-layer too. 3918 */ 3919 adapter->this_id = *(u32 *)adapter->mega_buffer; 3920 adapter->host->this_id = adapter->this_id; 3921 3922 return 1; 3923 } 3924 3925 return 0; 3926 } 3927 3928 #ifdef CONFIG_PROC_FS 3929 /** 3930 * mega_adapinq() 3931 * @adapter: pointer to our soft state 3932 * @dma_handle: DMA address of the buffer 3933 * 3934 * Issue internal commands while interrupts are available. 3935 * We only issue direct mailbox commands from within the driver. ioctl() 3936 * interface using these routines can issue passthru commands. 3937 */ 3938 static int 3939 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 3940 { 3941 megacmd_t mc; 3942 3943 memset(&mc, 0, sizeof(megacmd_t)); 3944 3945 if( adapter->flag & BOARD_40LD ) { 3946 mc.cmd = FC_NEW_CONFIG; 3947 mc.opcode = NC_SUBOP_ENQUIRY3; 3948 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 3949 } 3950 else { 3951 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 3952 } 3953 3954 mc.xferaddr = (u32)dma_handle; 3955 3956 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 3957 return -1; 3958 } 3959 3960 return 0; 3961 } 3962 3963 3964 /** 3965 * mega_internal_dev_inquiry() 3966 * @adapter: pointer to our soft state 3967 * @ch: channel for this device 3968 * @tgt: ID of this device 3969 * @buf_dma_handle: DMA address of the buffer 3970 * 3971 * Issue the scsi inquiry for the specified device. 3972 */ 3973 static int 3974 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 3975 dma_addr_t buf_dma_handle) 3976 { 3977 mega_passthru *pthru; 3978 dma_addr_t pthru_dma_handle; 3979 megacmd_t mc; 3980 int rval; 3981 struct pci_dev *pdev; 3982 3983 3984 /* 3985 * For all internal commands, the buffer must be allocated in <4GB 3986 * address range 3987 */ 3988 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 3989 3990 pthru = dma_alloc_coherent(&pdev->dev, sizeof(mega_passthru), 3991 &pthru_dma_handle, GFP_KERNEL); 3992 3993 if( pthru == NULL ) { 3994 free_local_pdev(pdev); 3995 return -1; 3996 } 3997 3998 pthru->timeout = 2; 3999 pthru->ars = 1; 4000 pthru->reqsenselen = 14; 4001 pthru->islogical = 0; 4002 4003 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4004 4005 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4006 4007 pthru->cdblen = 6; 4008 4009 pthru->cdb[0] = INQUIRY; 4010 pthru->cdb[1] = 0; 4011 pthru->cdb[2] = 0; 4012 pthru->cdb[3] = 0; 4013 pthru->cdb[4] = 255; 4014 pthru->cdb[5] = 0; 4015 4016 4017 pthru->dataxferaddr = (u32)buf_dma_handle; 4018 pthru->dataxferlen = 256; 4019 4020 memset(&mc, 0, sizeof(megacmd_t)); 4021 4022 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4023 mc.xferaddr = (u32)pthru_dma_handle; 4024 4025 rval = mega_internal_command(adapter, &mc, pthru); 4026 4027 dma_free_coherent(&pdev->dev, sizeof(mega_passthru), pthru, 4028 pthru_dma_handle); 4029 4030 free_local_pdev(pdev); 4031 4032 return rval; 4033 } 4034 #endif 4035 4036 /** 4037 * mega_internal_command() 4038 * @adapter: pointer to our soft state 4039 * @mc: the mailbox command 4040 * @pthru: Passthru structure for DCDB commands 4041 * 4042 * Issue the internal commands in interrupt mode. 4043 * The last argument is the address of the passthru structure if the command 4044 * to be fired is a passthru command 4045 * 4046 * Note: parameter 'pthru' is null for non-passthru commands. 4047 */ 4048 static int 4049 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4050 { 4051 unsigned long flags; 4052 scb_t *scb; 4053 int rval; 4054 4055 /* 4056 * The internal commands share one command id and hence are 4057 * serialized. This is so because we want to reserve maximum number of 4058 * available command ids for the I/O commands. 4059 */ 4060 mutex_lock(&adapter->int_mtx); 4061 4062 scb = &adapter->int_scb; 4063 memset(scb, 0, sizeof(scb_t)); 4064 4065 scb->idx = CMDID_INT_CMDS; 4066 scb->state |= SCB_ACTIVE | SCB_PENDQ; 4067 4068 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4069 4070 /* 4071 * Is it a passthru command 4072 */ 4073 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU) 4074 scb->pthru = pthru; 4075 4076 spin_lock_irqsave(&adapter->lock, flags); 4077 list_add_tail(&scb->list, &adapter->pending_list); 4078 /* 4079 * Check if the HBA is in quiescent state, e.g., during a 4080 * delete logical drive opertion. If it is, don't run 4081 * the pending_list. 4082 */ 4083 if (atomic_read(&adapter->quiescent) == 0) 4084 mega_runpendq(adapter); 4085 spin_unlock_irqrestore(&adapter->lock, flags); 4086 4087 wait_for_completion(&adapter->int_waitq); 4088 4089 mc->status = rval = adapter->int_status; 4090 4091 /* 4092 * Print a debug message for all failed commands. Applications can use 4093 * this information. 4094 */ 4095 if (rval && trace_level) { 4096 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n", 4097 mc->cmd, mc->opcode, mc->subopcode, rval); 4098 } 4099 4100 mutex_unlock(&adapter->int_mtx); 4101 return rval; 4102 } 4103 4104 static const struct scsi_host_template megaraid_template = { 4105 .module = THIS_MODULE, 4106 .name = "MegaRAID", 4107 .proc_name = "megaraid_legacy", 4108 .info = megaraid_info, 4109 .queuecommand = megaraid_queue, 4110 .bios_param = megaraid_biosparam, 4111 .max_sectors = MAX_SECTORS_PER_IO, 4112 .can_queue = MAX_COMMANDS, 4113 .this_id = DEFAULT_INITIATOR_ID, 4114 .sg_tablesize = MAX_SGLIST, 4115 .cmd_per_lun = DEF_CMD_PER_LUN, 4116 .eh_abort_handler = megaraid_abort, 4117 .eh_device_reset_handler = megaraid_reset, 4118 .eh_bus_reset_handler = megaraid_reset, 4119 .eh_host_reset_handler = megaraid_reset, 4120 .no_write_same = 1, 4121 .cmd_size = sizeof(struct megaraid_cmd_priv), 4122 }; 4123 4124 static int 4125 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4126 { 4127 struct Scsi_Host *host; 4128 adapter_t *adapter; 4129 unsigned long mega_baseport, tbase, flag = 0; 4130 u16 subsysid, subsysvid; 4131 u8 pci_bus, pci_dev_func; 4132 int irq, i, j; 4133 int error = -ENODEV; 4134 4135 if (hba_count >= MAX_CONTROLLERS) 4136 goto out; 4137 4138 if (pci_enable_device(pdev)) 4139 goto out; 4140 pci_set_master(pdev); 4141 4142 pci_bus = pdev->bus->number; 4143 pci_dev_func = pdev->devfn; 4144 4145 /* 4146 * The megaraid3 stuff reports the ID of the Intel part which is not 4147 * remotely specific to the megaraid 4148 */ 4149 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4150 u16 magic; 4151 /* 4152 * Don't fall over the Compaq management cards using the same 4153 * PCI identifier 4154 */ 4155 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4156 pdev->subsystem_device == 0xC000) 4157 goto out_disable_device; 4158 /* Now check the magic signature byte */ 4159 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4160 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4161 goto out_disable_device; 4162 /* Ok it is probably a megaraid */ 4163 } 4164 4165 /* 4166 * For these vendor and device ids, signature offsets are not 4167 * valid and 64 bit is implicit 4168 */ 4169 if (id->driver_data & BOARD_64BIT) 4170 flag |= BOARD_64BIT; 4171 else { 4172 u32 magic64; 4173 4174 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4175 if (magic64 == HBA_SIGNATURE_64BIT) 4176 flag |= BOARD_64BIT; 4177 } 4178 4179 subsysvid = pdev->subsystem_vendor; 4180 subsysid = pdev->subsystem_device; 4181 4182 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n", 4183 id->vendor, id->device); 4184 4185 /* Read the base port and IRQ from PCI */ 4186 mega_baseport = pci_resource_start(pdev, 0); 4187 irq = pdev->irq; 4188 4189 tbase = mega_baseport; 4190 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4191 flag |= BOARD_MEMMAP; 4192 4193 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4194 dev_warn(&pdev->dev, "mem region busy!\n"); 4195 goto out_disable_device; 4196 } 4197 4198 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4199 if (!mega_baseport) { 4200 dev_warn(&pdev->dev, "could not map hba memory\n"); 4201 goto out_release_region; 4202 } 4203 } else { 4204 flag |= BOARD_IOMAP; 4205 mega_baseport += 0x10; 4206 4207 if (!request_region(mega_baseport, 16, "megaraid")) 4208 goto out_disable_device; 4209 } 4210 4211 /* Initialize SCSI Host structure */ 4212 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4213 if (!host) 4214 goto out_iounmap; 4215 4216 adapter = (adapter_t *)host->hostdata; 4217 memset(adapter, 0, sizeof(adapter_t)); 4218 4219 dev_notice(&pdev->dev, 4220 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4221 host->host_no, mega_baseport, irq); 4222 4223 adapter->base = mega_baseport; 4224 if (flag & BOARD_MEMMAP) 4225 adapter->mmio_base = (void __iomem *) mega_baseport; 4226 4227 INIT_LIST_HEAD(&adapter->free_list); 4228 INIT_LIST_HEAD(&adapter->pending_list); 4229 INIT_LIST_HEAD(&adapter->completed_list); 4230 4231 adapter->flag = flag; 4232 spin_lock_init(&adapter->lock); 4233 4234 host->cmd_per_lun = max_cmd_per_lun; 4235 host->max_sectors = max_sectors_per_io; 4236 4237 adapter->dev = pdev; 4238 adapter->host = host; 4239 4240 adapter->host->irq = irq; 4241 4242 if (flag & BOARD_MEMMAP) 4243 adapter->host->base = tbase; 4244 else { 4245 adapter->host->io_port = tbase; 4246 adapter->host->n_io_port = 16; 4247 } 4248 4249 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4250 4251 /* 4252 * Allocate buffer to issue internal commands. 4253 */ 4254 adapter->mega_buffer = dma_alloc_coherent(&adapter->dev->dev, 4255 MEGA_BUFFER_SIZE, 4256 &adapter->buf_dma_handle, 4257 GFP_KERNEL); 4258 if (!adapter->mega_buffer) { 4259 dev_warn(&pdev->dev, "out of RAM\n"); 4260 goto out_host_put; 4261 } 4262 4263 adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t), 4264 GFP_KERNEL); 4265 if (!adapter->scb_list) { 4266 dev_warn(&pdev->dev, "out of RAM\n"); 4267 goto out_free_cmd_buffer; 4268 } 4269 4270 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4271 megaraid_isr_memmapped : megaraid_isr_iomapped, 4272 IRQF_SHARED, "megaraid", adapter)) { 4273 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq); 4274 goto out_free_scb_list; 4275 } 4276 4277 if (mega_setup_mailbox(adapter)) 4278 goto out_free_irq; 4279 4280 if (mega_query_adapter(adapter)) 4281 goto out_free_mbox; 4282 4283 /* 4284 * Have checks for some buggy f/w 4285 */ 4286 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4287 /* 4288 * Which firmware 4289 */ 4290 if (!strcmp(adapter->fw_version, "3.00") || 4291 !strcmp(adapter->fw_version, "3.01")) { 4292 4293 dev_warn(&pdev->dev, 4294 "Your card is a Dell PERC " 4295 "2/SC RAID controller with " 4296 "firmware\nmegaraid: 3.00 or 3.01. " 4297 "This driver is known to have " 4298 "corruption issues\nmegaraid: with " 4299 "those firmware versions on this " 4300 "specific card. In order\nmegaraid: " 4301 "to protect your data, please upgrade " 4302 "your firmware to version\nmegaraid: " 4303 "3.10 or later, available from the " 4304 "Dell Technical Support web\n" 4305 "megaraid: site at\nhttp://support." 4306 "dell.com/us/en/filelib/download/" 4307 "index.asp?fileid=2940\n" 4308 ); 4309 } 4310 } 4311 4312 /* 4313 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4314 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4315 * support, since this firmware cannot handle 64 bit 4316 * addressing 4317 */ 4318 if ((subsysvid == PCI_VENDOR_ID_HP) && 4319 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4320 /* 4321 * which firmware 4322 */ 4323 if (!strcmp(adapter->fw_version, "H01.07") || 4324 !strcmp(adapter->fw_version, "H01.08") || 4325 !strcmp(adapter->fw_version, "H01.09") ) { 4326 dev_warn(&pdev->dev, 4327 "Firmware H.01.07, " 4328 "H.01.08, and H.01.09 on 1M/2M " 4329 "controllers\n" 4330 "do not support 64 bit " 4331 "addressing.\nDISABLING " 4332 "64 bit support.\n"); 4333 adapter->flag &= ~BOARD_64BIT; 4334 } 4335 } 4336 4337 if (mega_is_bios_enabled(adapter)) 4338 mega_hbas[hba_count].is_bios_enabled = 1; 4339 mega_hbas[hba_count].hostdata_addr = adapter; 4340 4341 /* 4342 * Find out which channel is raid and which is scsi. This is 4343 * for ROMB support. 4344 */ 4345 mega_enum_raid_scsi(adapter); 4346 4347 /* 4348 * Find out if a logical drive is set as the boot drive. If 4349 * there is one, will make that as the first logical drive. 4350 * ROMB: Do we have to boot from a physical drive. Then all 4351 * the physical drives would appear before the logical disks. 4352 * Else, all the physical drives would be exported to the mid 4353 * layer after logical drives. 4354 */ 4355 mega_get_boot_drv(adapter); 4356 4357 if (adapter->boot_pdrv_enabled) { 4358 j = adapter->product_info.nchannels; 4359 for( i = 0; i < j; i++ ) 4360 adapter->logdrv_chan[i] = 0; 4361 for( i = j; i < NVIRT_CHAN + j; i++ ) 4362 adapter->logdrv_chan[i] = 1; 4363 } else { 4364 for (i = 0; i < NVIRT_CHAN; i++) 4365 adapter->logdrv_chan[i] = 1; 4366 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4367 adapter->logdrv_chan[i] = 0; 4368 adapter->mega_ch_class <<= NVIRT_CHAN; 4369 } 4370 4371 /* 4372 * Do we support random deletion and addition of logical 4373 * drives 4374 */ 4375 adapter->read_ldidmap = 0; /* set it after first logdrv 4376 delete cmd */ 4377 adapter->support_random_del = mega_support_random_del(adapter); 4378 4379 /* Initialize SCBs */ 4380 if (mega_init_scb(adapter)) 4381 goto out_free_mbox; 4382 4383 /* 4384 * Reset the pending commands counter 4385 */ 4386 atomic_set(&adapter->pend_cmds, 0); 4387 4388 /* 4389 * Reset the adapter quiescent flag 4390 */ 4391 atomic_set(&adapter->quiescent, 0); 4392 4393 hba_soft_state[hba_count] = adapter; 4394 4395 /* 4396 * Fill in the structure which needs to be passed back to the 4397 * application when it does an ioctl() for controller related 4398 * information. 4399 */ 4400 i = hba_count; 4401 4402 mcontroller[i].base = mega_baseport; 4403 mcontroller[i].irq = irq; 4404 mcontroller[i].numldrv = adapter->numldrv; 4405 mcontroller[i].pcibus = pci_bus; 4406 mcontroller[i].pcidev = id->device; 4407 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4408 mcontroller[i].pciid = -1; 4409 mcontroller[i].pcivendor = id->vendor; 4410 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4411 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4412 4413 4414 /* Set the Mode of addressing to 64 bit if we can */ 4415 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4416 dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); 4417 adapter->has_64bit_addr = 1; 4418 } else { 4419 dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 4420 adapter->has_64bit_addr = 0; 4421 } 4422 4423 mutex_init(&adapter->int_mtx); 4424 init_completion(&adapter->int_waitq); 4425 4426 adapter->this_id = DEFAULT_INITIATOR_ID; 4427 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4428 4429 #if MEGA_HAVE_CLUSTERING 4430 /* 4431 * Is cluster support enabled on this controller 4432 * Note: In a cluster the HBAs ( the initiators ) will have 4433 * different target IDs and we cannot assume it to be 7. Call 4434 * to mega_support_cluster() will get the target ids also if 4435 * the cluster support is available 4436 */ 4437 adapter->has_cluster = mega_support_cluster(adapter); 4438 if (adapter->has_cluster) { 4439 dev_notice(&pdev->dev, 4440 "Cluster driver, initiator id:%d\n", 4441 adapter->this_id); 4442 } 4443 #endif 4444 4445 pci_set_drvdata(pdev, host); 4446 4447 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4448 4449 error = scsi_add_host(host, &pdev->dev); 4450 if (error) 4451 goto out_free_mbox; 4452 4453 scsi_scan_host(host); 4454 hba_count++; 4455 return 0; 4456 4457 out_free_mbox: 4458 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t), 4459 adapter->una_mbox64, adapter->una_mbox64_dma); 4460 out_free_irq: 4461 free_irq(adapter->host->irq, adapter); 4462 out_free_scb_list: 4463 kfree(adapter->scb_list); 4464 out_free_cmd_buffer: 4465 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE, 4466 adapter->mega_buffer, adapter->buf_dma_handle); 4467 out_host_put: 4468 scsi_host_put(host); 4469 out_iounmap: 4470 if (flag & BOARD_MEMMAP) 4471 iounmap((void *)mega_baseport); 4472 out_release_region: 4473 if (flag & BOARD_MEMMAP) 4474 release_mem_region(tbase, 128); 4475 else 4476 release_region(mega_baseport, 16); 4477 out_disable_device: 4478 pci_disable_device(pdev); 4479 out: 4480 return error; 4481 } 4482 4483 static void 4484 __megaraid_shutdown(adapter_t *adapter) 4485 { 4486 u_char raw_mbox[sizeof(struct mbox_out)]; 4487 mbox_t *mbox = (mbox_t *)raw_mbox; 4488 int i; 4489 4490 /* Flush adapter cache */ 4491 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4492 raw_mbox[0] = FLUSH_ADAPTER; 4493 4494 free_irq(adapter->host->irq, adapter); 4495 4496 /* Issue a blocking (interrupts disabled) command to the card */ 4497 issue_scb_block(adapter, raw_mbox); 4498 4499 /* Flush disks cache */ 4500 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4501 raw_mbox[0] = FLUSH_SYSTEM; 4502 4503 /* Issue a blocking (interrupts disabled) command to the card */ 4504 issue_scb_block(adapter, raw_mbox); 4505 4506 if (atomic_read(&adapter->pend_cmds) > 0) 4507 dev_warn(&adapter->dev->dev, "pending commands!!\n"); 4508 4509 /* 4510 * Have a delibrate delay to make sure all the caches are 4511 * actually flushed. 4512 */ 4513 for (i = 0; i <= 10; i++) 4514 mdelay(1000); 4515 } 4516 4517 static void 4518 megaraid_remove_one(struct pci_dev *pdev) 4519 { 4520 struct Scsi_Host *host = pci_get_drvdata(pdev); 4521 adapter_t *adapter = (adapter_t *)host->hostdata; 4522 char buf[12] = { 0 }; 4523 4524 scsi_remove_host(host); 4525 4526 __megaraid_shutdown(adapter); 4527 4528 /* Free our resources */ 4529 if (adapter->flag & BOARD_MEMMAP) { 4530 iounmap((void *)adapter->base); 4531 release_mem_region(adapter->host->base, 128); 4532 } else 4533 release_region(adapter->base, 16); 4534 4535 mega_free_sgl(adapter); 4536 4537 sprintf(buf, "hba%d", adapter->host->host_no); 4538 remove_proc_subtree(buf, mega_proc_dir_entry); 4539 4540 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE, 4541 adapter->mega_buffer, adapter->buf_dma_handle); 4542 kfree(adapter->scb_list); 4543 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t), 4544 adapter->una_mbox64, adapter->una_mbox64_dma); 4545 4546 scsi_host_put(host); 4547 pci_disable_device(pdev); 4548 4549 hba_count--; 4550 } 4551 4552 static void 4553 megaraid_shutdown(struct pci_dev *pdev) 4554 { 4555 struct Scsi_Host *host = pci_get_drvdata(pdev); 4556 adapter_t *adapter = (adapter_t *)host->hostdata; 4557 4558 __megaraid_shutdown(adapter); 4559 } 4560 4561 static struct pci_device_id megaraid_pci_tbl[] = { 4562 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 4563 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4564 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 4565 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4566 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 4567 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4568 {0,} 4569 }; 4570 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 4571 4572 static struct pci_driver megaraid_pci_driver = { 4573 .name = "megaraid_legacy", 4574 .id_table = megaraid_pci_tbl, 4575 .probe = megaraid_probe_one, 4576 .remove = megaraid_remove_one, 4577 .shutdown = megaraid_shutdown, 4578 }; 4579 4580 static int __init megaraid_init(void) 4581 { 4582 int error; 4583 4584 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 4585 max_cmd_per_lun = MAX_CMD_PER_LUN; 4586 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 4587 max_mbox_busy_wait = MBOX_BUSY_WAIT; 4588 4589 #ifdef CONFIG_PROC_FS 4590 mega_proc_dir_entry = proc_mkdir("megaraid", NULL); 4591 if (!mega_proc_dir_entry) { 4592 printk(KERN_WARNING 4593 "megaraid: failed to create megaraid root\n"); 4594 } 4595 #endif 4596 error = pci_register_driver(&megaraid_pci_driver); 4597 if (error) { 4598 #ifdef CONFIG_PROC_FS 4599 remove_proc_entry("megaraid", NULL); 4600 #endif 4601 return error; 4602 } 4603 4604 /* 4605 * Register the driver as a character device, for applications 4606 * to access it for ioctls. 4607 * First argument (major) to register_chrdev implies a dynamic 4608 * major number allocation. 4609 */ 4610 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 4611 if (major < 0) { 4612 printk(KERN_WARNING 4613 "megaraid: failed to register char device\n"); 4614 } 4615 4616 return 0; 4617 } 4618 4619 static void __exit megaraid_exit(void) 4620 { 4621 /* 4622 * Unregister the character device interface to the driver. 4623 */ 4624 unregister_chrdev(major, "megadev_legacy"); 4625 4626 pci_unregister_driver(&megaraid_pci_driver); 4627 4628 #ifdef CONFIG_PROC_FS 4629 remove_proc_entry("megaraid", NULL); 4630 #endif 4631 } 4632 4633 module_init(megaraid_init); 4634 module_exit(megaraid_exit); 4635 4636 /* vi: set ts=8 sw=8 tw=78: */ 4637