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 (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 enum scsi_qc_status megaraid_queue_lck(struct scsi_cmnd *scmd) 376 { 377 adapter_t *adapter; 378 scb_t *scb; 379 enum scsi_qc_status 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, 522 enum scsi_qc_status *busy) 523 { 524 mega_passthru *pthru; 525 scb_t *scb; 526 mbox_t *mbox; 527 u32 seg; 528 char islogical; 529 int max_ldrv_num; 530 int channel = 0; 531 int target = 0; 532 int ldrv_num = 0; /* logical drive number */ 533 534 /* 535 * We know what channels our logical drives are on - mega_find_card() 536 */ 537 islogical = adapter->logdrv_chan[cmd->device->channel]; 538 539 /* 540 * The theory: If physical drive is chosen for boot, all the physical 541 * devices are exported before the logical drives, otherwise physical 542 * devices are pushed after logical drives, in which case - Kernel sees 543 * the physical devices on virtual channel which is obviously converted 544 * to actual channel on the HBA. 545 */ 546 if( adapter->boot_pdrv_enabled ) { 547 if( islogical ) { 548 /* logical channel */ 549 channel = cmd->device->channel - 550 adapter->product_info.nchannels; 551 } 552 else { 553 /* this is physical channel */ 554 channel = cmd->device->channel; 555 target = cmd->device->id; 556 557 /* 558 * boot from a physical disk, that disk needs to be 559 * exposed first IF both the channels are SCSI, then 560 * booting from the second channel is not allowed. 561 */ 562 if( target == 0 ) { 563 target = adapter->boot_pdrv_tgt; 564 } 565 else if( target == adapter->boot_pdrv_tgt ) { 566 target = 0; 567 } 568 } 569 } 570 else { 571 if( islogical ) { 572 /* this is the logical channel */ 573 channel = cmd->device->channel; 574 } 575 else { 576 /* physical channel */ 577 channel = cmd->device->channel - NVIRT_CHAN; 578 target = cmd->device->id; 579 } 580 } 581 582 583 if(islogical) { 584 585 /* have just LUN 0 for each target on virtual channels */ 586 if (cmd->device->lun) { 587 cmd->result = (DID_BAD_TARGET << 16); 588 scsi_done(cmd); 589 return NULL; 590 } 591 592 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 593 594 595 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 596 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 597 598 /* 599 * max_ldrv_num increases by 0x80 if some logical drive was 600 * deleted. 601 */ 602 if(adapter->read_ldidmap) 603 max_ldrv_num += 0x80; 604 605 if(ldrv_num > max_ldrv_num ) { 606 cmd->result = (DID_BAD_TARGET << 16); 607 scsi_done(cmd); 608 return NULL; 609 } 610 611 } 612 else { 613 if( cmd->device->lun > 7) { 614 /* 615 * Do not support lun >7 for physically accessed 616 * devices 617 */ 618 cmd->result = (DID_BAD_TARGET << 16); 619 scsi_done(cmd); 620 return NULL; 621 } 622 } 623 624 /* 625 * 626 * Logical drive commands 627 * 628 */ 629 if(islogical) { 630 switch (cmd->cmnd[0]) { 631 case TEST_UNIT_READY: 632 #if MEGA_HAVE_CLUSTERING 633 /* 634 * Do we support clustering and is the support enabled 635 * If no, return success always 636 */ 637 if( !adapter->has_cluster ) { 638 cmd->result = (DID_OK << 16); 639 scsi_done(cmd); 640 return NULL; 641 } 642 643 if(!(scb = mega_allocate_scb(adapter, cmd))) { 644 *busy = SCSI_MLQUEUE_HOST_BUSY; 645 return NULL; 646 } 647 648 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 649 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 650 scb->raw_mbox[3] = ldrv_num; 651 652 scb->dma_direction = DMA_NONE; 653 654 return scb; 655 #else 656 cmd->result = (DID_OK << 16); 657 scsi_done(cmd); 658 return NULL; 659 #endif 660 661 case MODE_SENSE: { 662 char *buf; 663 struct scatterlist *sg; 664 665 sg = scsi_sglist(cmd); 666 buf = kmap_atomic(sg_page(sg)) + sg->offset; 667 668 memset(buf, 0, cmd->cmnd[4]); 669 kunmap_atomic(buf - sg->offset); 670 671 cmd->result = (DID_OK << 16); 672 scsi_done(cmd); 673 return NULL; 674 } 675 676 case READ_CAPACITY: 677 case INQUIRY: 678 679 if(!(adapter->flag & (1L << cmd->device->channel))) { 680 681 dev_notice(&adapter->dev->dev, 682 "scsi%d: scanning scsi channel %d " 683 "for logical drives\n", 684 adapter->host->host_no, 685 cmd->device->channel); 686 687 adapter->flag |= (1L << cmd->device->channel); 688 } 689 690 /* Allocate a SCB and initialize passthru */ 691 if(!(scb = mega_allocate_scb(adapter, cmd))) { 692 *busy = SCSI_MLQUEUE_HOST_BUSY; 693 return NULL; 694 } 695 pthru = scb->pthru; 696 697 mbox = (mbox_t *)scb->raw_mbox; 698 memset(mbox, 0, sizeof(scb->raw_mbox)); 699 memset(pthru, 0, sizeof(mega_passthru)); 700 701 pthru->timeout = 0; 702 pthru->ars = 1; 703 pthru->reqsenselen = 14; 704 pthru->islogical = 1; 705 pthru->logdrv = ldrv_num; 706 pthru->cdblen = cmd->cmd_len; 707 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 708 709 if( adapter->has_64bit_addr ) { 710 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 711 } 712 else { 713 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 714 } 715 716 scb->dma_direction = DMA_FROM_DEVICE; 717 718 pthru->numsgelements = mega_build_sglist(adapter, scb, 719 &pthru->dataxferaddr, &pthru->dataxferlen); 720 721 mbox->m_out.xferaddr = scb->pthru_dma_addr; 722 723 return scb; 724 725 case READ_6: 726 case WRITE_6: 727 case READ_10: 728 case WRITE_10: 729 case READ_12: 730 case WRITE_12: 731 732 /* Allocate a SCB and initialize mailbox */ 733 if(!(scb = mega_allocate_scb(adapter, cmd))) { 734 *busy = SCSI_MLQUEUE_HOST_BUSY; 735 return NULL; 736 } 737 mbox = (mbox_t *)scb->raw_mbox; 738 739 memset(mbox, 0, sizeof(scb->raw_mbox)); 740 mbox->m_out.logdrv = ldrv_num; 741 742 /* 743 * A little hack: 2nd bit is zero for all scsi read 744 * commands and is set for all scsi write commands 745 */ 746 if( adapter->has_64bit_addr ) { 747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 748 MEGA_MBOXCMD_LWRITE64: 749 MEGA_MBOXCMD_LREAD64 ; 750 } 751 else { 752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 753 MEGA_MBOXCMD_LWRITE: 754 MEGA_MBOXCMD_LREAD ; 755 } 756 757 /* 758 * 6-byte READ(0x08) or WRITE(0x0A) cdb 759 */ 760 if( cmd->cmd_len == 6 ) { 761 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 762 mbox->m_out.lba = 763 ((u32)cmd->cmnd[1] << 16) | 764 ((u32)cmd->cmnd[2] << 8) | 765 (u32)cmd->cmnd[3]; 766 767 mbox->m_out.lba &= 0x1FFFFF; 768 769 #if MEGA_HAVE_STATS 770 /* 771 * Take modulo 0x80, since the logical drive 772 * number increases by 0x80 when a logical 773 * drive was deleted 774 */ 775 if (*cmd->cmnd == READ_6) { 776 adapter->nreads[ldrv_num%0x80]++; 777 adapter->nreadblocks[ldrv_num%0x80] += 778 mbox->m_out.numsectors; 779 } else { 780 adapter->nwrites[ldrv_num%0x80]++; 781 adapter->nwriteblocks[ldrv_num%0x80] += 782 mbox->m_out.numsectors; 783 } 784 #endif 785 } 786 787 /* 788 * 10-byte READ(0x28) or WRITE(0x2A) cdb 789 */ 790 if( cmd->cmd_len == 10 ) { 791 mbox->m_out.numsectors = 792 (u32)cmd->cmnd[8] | 793 ((u32)cmd->cmnd[7] << 8); 794 mbox->m_out.lba = 795 ((u32)cmd->cmnd[2] << 24) | 796 ((u32)cmd->cmnd[3] << 16) | 797 ((u32)cmd->cmnd[4] << 8) | 798 (u32)cmd->cmnd[5]; 799 800 #if MEGA_HAVE_STATS 801 if (*cmd->cmnd == READ_10) { 802 adapter->nreads[ldrv_num%0x80]++; 803 adapter->nreadblocks[ldrv_num%0x80] += 804 mbox->m_out.numsectors; 805 } else { 806 adapter->nwrites[ldrv_num%0x80]++; 807 adapter->nwriteblocks[ldrv_num%0x80] += 808 mbox->m_out.numsectors; 809 } 810 #endif 811 } 812 813 /* 814 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 815 */ 816 if( cmd->cmd_len == 12 ) { 817 mbox->m_out.lba = 818 ((u32)cmd->cmnd[2] << 24) | 819 ((u32)cmd->cmnd[3] << 16) | 820 ((u32)cmd->cmnd[4] << 8) | 821 (u32)cmd->cmnd[5]; 822 823 mbox->m_out.numsectors = 824 ((u32)cmd->cmnd[6] << 24) | 825 ((u32)cmd->cmnd[7] << 16) | 826 ((u32)cmd->cmnd[8] << 8) | 827 (u32)cmd->cmnd[9]; 828 829 #if MEGA_HAVE_STATS 830 if (*cmd->cmnd == READ_12) { 831 adapter->nreads[ldrv_num%0x80]++; 832 adapter->nreadblocks[ldrv_num%0x80] += 833 mbox->m_out.numsectors; 834 } else { 835 adapter->nwrites[ldrv_num%0x80]++; 836 adapter->nwriteblocks[ldrv_num%0x80] += 837 mbox->m_out.numsectors; 838 } 839 #endif 840 } 841 842 /* 843 * If it is a read command 844 */ 845 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 846 scb->dma_direction = DMA_FROM_DEVICE; 847 } 848 else { 849 scb->dma_direction = DMA_TO_DEVICE; 850 } 851 852 /* Calculate Scatter-Gather info */ 853 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 854 (u32 *)&mbox->m_out.xferaddr, &seg); 855 856 return scb; 857 858 #if MEGA_HAVE_CLUSTERING 859 case RESERVE_6: 860 case RELEASE_6: 861 862 /* 863 * Do we support clustering and is the support enabled 864 */ 865 if( ! adapter->has_cluster ) { 866 867 cmd->result = (DID_BAD_TARGET << 16); 868 scsi_done(cmd); 869 return NULL; 870 } 871 872 /* Allocate a SCB and initialize mailbox */ 873 if(!(scb = mega_allocate_scb(adapter, cmd))) { 874 *busy = SCSI_MLQUEUE_HOST_BUSY; 875 return NULL; 876 } 877 878 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 879 scb->raw_mbox[2] = *cmd->cmnd == RESERVE_6 ? 880 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 881 882 scb->raw_mbox[3] = ldrv_num; 883 884 scb->dma_direction = DMA_NONE; 885 886 return scb; 887 #endif 888 889 default: 890 cmd->result = (DID_BAD_TARGET << 16); 891 scsi_done(cmd); 892 return NULL; 893 } 894 } 895 896 /* 897 * Passthru drive commands 898 */ 899 else { 900 /* Allocate a SCB and initialize passthru */ 901 if(!(scb = mega_allocate_scb(adapter, cmd))) { 902 *busy = SCSI_MLQUEUE_HOST_BUSY; 903 return NULL; 904 } 905 906 mbox = (mbox_t *)scb->raw_mbox; 907 memset(mbox, 0, sizeof(scb->raw_mbox)); 908 909 if( adapter->support_ext_cdb ) { 910 911 mega_prepare_extpassthru(adapter, scb, cmd, 912 channel, target); 913 914 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 915 916 mbox->m_out.xferaddr = scb->epthru_dma_addr; 917 918 } 919 else { 920 921 pthru = mega_prepare_passthru(adapter, scb, cmd, 922 channel, target); 923 924 /* Initialize mailbox */ 925 if( adapter->has_64bit_addr ) { 926 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 927 } 928 else { 929 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 930 } 931 932 mbox->m_out.xferaddr = scb->pthru_dma_addr; 933 934 } 935 return scb; 936 } 937 return NULL; 938 } 939 940 941 /** 942 * mega_prepare_passthru() 943 * @adapter: pointer to our soft state 944 * @scb: our scsi control block 945 * @cmd: scsi command from the mid-layer 946 * @channel: actual channel on the controller 947 * @target: actual id on the controller. 948 * 949 * prepare a command for the scsi physical devices. 950 */ 951 static mega_passthru * 952 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd, 953 int channel, int target) 954 { 955 mega_passthru *pthru; 956 957 pthru = scb->pthru; 958 memset(pthru, 0, sizeof (mega_passthru)); 959 960 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 961 pthru->timeout = 2; 962 963 pthru->ars = 1; 964 pthru->reqsenselen = 14; 965 pthru->islogical = 0; 966 967 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 968 969 pthru->target = (adapter->flag & BOARD_40LD) ? 970 (channel << 4) | target : target; 971 972 pthru->cdblen = cmd->cmd_len; 973 pthru->logdrv = cmd->device->lun; 974 975 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 976 977 /* Not sure about the direction */ 978 scb->dma_direction = DMA_BIDIRECTIONAL; 979 980 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 981 switch (cmd->cmnd[0]) { 982 case INQUIRY: 983 case READ_CAPACITY: 984 if(!(adapter->flag & (1L << cmd->device->channel))) { 985 986 dev_notice(&adapter->dev->dev, 987 "scsi%d: scanning scsi channel %d [P%d] " 988 "for physical devices\n", 989 adapter->host->host_no, 990 cmd->device->channel, channel); 991 992 adapter->flag |= (1L << cmd->device->channel); 993 } 994 fallthrough; 995 default: 996 pthru->numsgelements = mega_build_sglist(adapter, scb, 997 &pthru->dataxferaddr, &pthru->dataxferlen); 998 break; 999 } 1000 return pthru; 1001 } 1002 1003 1004 /** 1005 * mega_prepare_extpassthru() 1006 * @adapter: pointer to our soft state 1007 * @scb: our scsi control block 1008 * @cmd: scsi command from the mid-layer 1009 * @channel: actual channel on the controller 1010 * @target: actual id on the controller. 1011 * 1012 * prepare a command for the scsi physical devices. This rountine prepares 1013 * commands for devices which can take extended CDBs (>10 bytes) 1014 */ 1015 static mega_ext_passthru * 1016 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, 1017 struct scsi_cmnd *cmd, 1018 int channel, int target) 1019 { 1020 mega_ext_passthru *epthru; 1021 1022 epthru = scb->epthru; 1023 memset(epthru, 0, sizeof(mega_ext_passthru)); 1024 1025 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1026 epthru->timeout = 2; 1027 1028 epthru->ars = 1; 1029 epthru->reqsenselen = 14; 1030 epthru->islogical = 0; 1031 1032 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1033 epthru->target = (adapter->flag & BOARD_40LD) ? 1034 (channel << 4) | target : target; 1035 1036 epthru->cdblen = cmd->cmd_len; 1037 epthru->logdrv = cmd->device->lun; 1038 1039 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1040 1041 /* Not sure about the direction */ 1042 scb->dma_direction = DMA_BIDIRECTIONAL; 1043 1044 switch(cmd->cmnd[0]) { 1045 case INQUIRY: 1046 case READ_CAPACITY: 1047 if(!(adapter->flag & (1L << cmd->device->channel))) { 1048 1049 dev_notice(&adapter->dev->dev, 1050 "scsi%d: scanning scsi channel %d [P%d] " 1051 "for physical devices\n", 1052 adapter->host->host_no, 1053 cmd->device->channel, channel); 1054 1055 adapter->flag |= (1L << cmd->device->channel); 1056 } 1057 fallthrough; 1058 default: 1059 epthru->numsgelements = mega_build_sglist(adapter, scb, 1060 &epthru->dataxferaddr, &epthru->dataxferlen); 1061 break; 1062 } 1063 1064 return epthru; 1065 } 1066 1067 static void 1068 __mega_runpendq(adapter_t *adapter) 1069 { 1070 scb_t *scb; 1071 struct list_head *pos, *next; 1072 1073 /* Issue any pending commands to the card */ 1074 list_for_each_safe(pos, next, &adapter->pending_list) { 1075 1076 scb = list_entry(pos, scb_t, list); 1077 1078 if( !(scb->state & SCB_ISSUED) ) { 1079 1080 if( issue_scb(adapter, scb) != 0 ) 1081 return; 1082 } 1083 } 1084 1085 return; 1086 } 1087 1088 1089 /** 1090 * issue_scb() 1091 * @adapter: pointer to our soft state 1092 * @scb: scsi control block 1093 * 1094 * Post a command to the card if the mailbox is available, otherwise return 1095 * busy. We also take the scb from the pending list if the mailbox is 1096 * available. 1097 */ 1098 static int 1099 issue_scb(adapter_t *adapter, scb_t *scb) 1100 { 1101 volatile mbox64_t *mbox64 = adapter->mbox64; 1102 volatile mbox_t *mbox = adapter->mbox; 1103 unsigned int i = 0; 1104 1105 if(unlikely(mbox->m_in.busy)) { 1106 do { 1107 udelay(1); 1108 i++; 1109 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1110 1111 if(mbox->m_in.busy) return -1; 1112 } 1113 1114 /* Copy mailbox data into host structure */ 1115 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1116 sizeof(struct mbox_out)); 1117 1118 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1119 mbox->m_in.busy = 1; /* Set busy */ 1120 1121 1122 /* 1123 * Increment the pending queue counter 1124 */ 1125 atomic_inc(&adapter->pend_cmds); 1126 1127 switch (mbox->m_out.cmd) { 1128 case MEGA_MBOXCMD_LREAD64: 1129 case MEGA_MBOXCMD_LWRITE64: 1130 case MEGA_MBOXCMD_PASSTHRU64: 1131 case MEGA_MBOXCMD_EXTPTHRU: 1132 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1133 mbox64->xfer_segment_hi = 0; 1134 mbox->m_out.xferaddr = 0xFFFFFFFF; 1135 break; 1136 default: 1137 mbox64->xfer_segment_lo = 0; 1138 mbox64->xfer_segment_hi = 0; 1139 } 1140 1141 /* 1142 * post the command 1143 */ 1144 scb->state |= SCB_ISSUED; 1145 1146 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1147 mbox->m_in.poll = 0; 1148 mbox->m_in.ack = 0; 1149 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1150 } 1151 else { 1152 irq_enable(adapter); 1153 issue_command(adapter); 1154 } 1155 1156 return 0; 1157 } 1158 1159 /* 1160 * Wait until the controller's mailbox is available 1161 */ 1162 static inline int 1163 mega_busywait_mbox (adapter_t *adapter) 1164 { 1165 if (adapter->mbox->m_in.busy) 1166 return __mega_busywait_mbox(adapter); 1167 return 0; 1168 } 1169 1170 /** 1171 * issue_scb_block() 1172 * @adapter: pointer to our soft state 1173 * @raw_mbox: the mailbox 1174 * 1175 * Issue a scb in synchronous and non-interrupt mode 1176 */ 1177 static int 1178 issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1179 { 1180 volatile mbox64_t *mbox64 = adapter->mbox64; 1181 volatile mbox_t *mbox = adapter->mbox; 1182 u8 byte; 1183 1184 /* Wait until mailbox is free */ 1185 if(mega_busywait_mbox (adapter)) 1186 goto bug_blocked_mailbox; 1187 1188 /* Copy mailbox data into host structure */ 1189 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1190 mbox->m_out.cmdid = 0xFE; 1191 mbox->m_in.busy = 1; 1192 1193 switch (raw_mbox[0]) { 1194 case MEGA_MBOXCMD_LREAD64: 1195 case MEGA_MBOXCMD_LWRITE64: 1196 case MEGA_MBOXCMD_PASSTHRU64: 1197 case MEGA_MBOXCMD_EXTPTHRU: 1198 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1199 mbox64->xfer_segment_hi = 0; 1200 mbox->m_out.xferaddr = 0xFFFFFFFF; 1201 break; 1202 default: 1203 mbox64->xfer_segment_lo = 0; 1204 mbox64->xfer_segment_hi = 0; 1205 } 1206 1207 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1208 mbox->m_in.poll = 0; 1209 mbox->m_in.ack = 0; 1210 mbox->m_in.numstatus = 0xFF; 1211 mbox->m_in.status = 0xFF; 1212 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1213 1214 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1215 cpu_relax(); 1216 1217 mbox->m_in.numstatus = 0xFF; 1218 1219 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1220 cpu_relax(); 1221 1222 mbox->m_in.poll = 0; 1223 mbox->m_in.ack = 0x77; 1224 1225 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1226 1227 while(RDINDOOR(adapter) & 0x2) 1228 cpu_relax(); 1229 } 1230 else { 1231 irq_disable(adapter); 1232 issue_command(adapter); 1233 1234 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1235 cpu_relax(); 1236 1237 set_irq_state(adapter, byte); 1238 irq_enable(adapter); 1239 irq_ack(adapter); 1240 } 1241 1242 return mbox->m_in.status; 1243 1244 bug_blocked_mailbox: 1245 dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n"); 1246 udelay (1000); 1247 return -1; 1248 } 1249 1250 1251 /** 1252 * megaraid_isr_iomapped() 1253 * @irq: irq 1254 * @devp: pointer to our soft state 1255 * 1256 * Interrupt service routine for io-mapped controllers. 1257 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1258 * and service the completed commands. 1259 */ 1260 static irqreturn_t 1261 megaraid_isr_iomapped(int irq, void *devp) 1262 { 1263 adapter_t *adapter = devp; 1264 unsigned long flags; 1265 u8 status; 1266 u8 nstatus; 1267 u8 completed[MAX_FIRMWARE_STATUS]; 1268 u8 byte; 1269 int handled = 0; 1270 1271 1272 /* 1273 * loop till F/W has more commands for us to complete. 1274 */ 1275 spin_lock_irqsave(&adapter->lock, flags); 1276 1277 do { 1278 /* Check if a valid interrupt is pending */ 1279 byte = irq_state(adapter); 1280 if( (byte & VALID_INTR_BYTE) == 0 ) { 1281 /* 1282 * No more pending commands 1283 */ 1284 goto out_unlock; 1285 } 1286 set_irq_state(adapter, byte); 1287 1288 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1289 == 0xFF) 1290 cpu_relax(); 1291 adapter->mbox->m_in.numstatus = 0xFF; 1292 1293 status = adapter->mbox->m_in.status; 1294 1295 /* 1296 * decrement the pending queue counter 1297 */ 1298 atomic_sub(nstatus, &adapter->pend_cmds); 1299 1300 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1301 nstatus); 1302 1303 /* Acknowledge interrupt */ 1304 irq_ack(adapter); 1305 1306 mega_cmd_done(adapter, completed, nstatus, status); 1307 1308 mega_rundoneq(adapter); 1309 1310 handled = 1; 1311 1312 /* Loop through any pending requests */ 1313 if(atomic_read(&adapter->quiescent) == 0) { 1314 mega_runpendq(adapter); 1315 } 1316 1317 } while(1); 1318 1319 out_unlock: 1320 1321 spin_unlock_irqrestore(&adapter->lock, flags); 1322 1323 return IRQ_RETVAL(handled); 1324 } 1325 1326 1327 /** 1328 * megaraid_isr_memmapped() 1329 * @irq: irq 1330 * @devp: pointer to our soft state 1331 * 1332 * Interrupt service routine for memory-mapped controllers. 1333 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1334 * and service the completed commands. 1335 */ 1336 static irqreturn_t 1337 megaraid_isr_memmapped(int irq, void *devp) 1338 { 1339 adapter_t *adapter = devp; 1340 unsigned long flags; 1341 u8 status; 1342 u32 dword = 0; 1343 u8 nstatus; 1344 u8 completed[MAX_FIRMWARE_STATUS]; 1345 int handled = 0; 1346 1347 1348 /* 1349 * loop till F/W has more commands for us to complete. 1350 */ 1351 spin_lock_irqsave(&adapter->lock, flags); 1352 1353 do { 1354 /* Check if a valid interrupt is pending */ 1355 dword = RDOUTDOOR(adapter); 1356 if(dword != 0x10001234) { 1357 /* 1358 * No more pending commands 1359 */ 1360 goto out_unlock; 1361 } 1362 WROUTDOOR(adapter, 0x10001234); 1363 1364 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1365 == 0xFF) { 1366 cpu_relax(); 1367 } 1368 adapter->mbox->m_in.numstatus = 0xFF; 1369 1370 status = adapter->mbox->m_in.status; 1371 1372 /* 1373 * decrement the pending queue counter 1374 */ 1375 atomic_sub(nstatus, &adapter->pend_cmds); 1376 1377 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1378 nstatus); 1379 1380 /* Acknowledge interrupt */ 1381 WRINDOOR(adapter, 0x2); 1382 1383 handled = 1; 1384 1385 while( RDINDOOR(adapter) & 0x02 ) 1386 cpu_relax(); 1387 1388 mega_cmd_done(adapter, completed, nstatus, status); 1389 1390 mega_rundoneq(adapter); 1391 1392 /* Loop through any pending requests */ 1393 if(atomic_read(&adapter->quiescent) == 0) { 1394 mega_runpendq(adapter); 1395 } 1396 1397 } while(1); 1398 1399 out_unlock: 1400 1401 spin_unlock_irqrestore(&adapter->lock, flags); 1402 1403 return IRQ_RETVAL(handled); 1404 } 1405 /** 1406 * mega_cmd_done() 1407 * @adapter: pointer to our soft state 1408 * @completed: array of ids of completed commands 1409 * @nstatus: number of completed commands 1410 * @status: status of the last command completed 1411 * 1412 * Complete the commands and call the scsi mid-layer callback hooks. 1413 */ 1414 static void 1415 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1416 { 1417 mega_ext_passthru *epthru = NULL; 1418 struct scatterlist *sgl; 1419 struct scsi_cmnd *cmd = NULL; 1420 mega_passthru *pthru = NULL; 1421 mbox_t *mbox = NULL; 1422 u8 c; 1423 scb_t *scb; 1424 int islogical; 1425 int cmdid; 1426 int i; 1427 1428 /* 1429 * for all the commands completed, call the mid-layer callback routine 1430 * and free the scb. 1431 */ 1432 for( i = 0; i < nstatus; i++ ) { 1433 1434 cmdid = completed[i]; 1435 1436 /* 1437 * Only free SCBs for the commands coming down from the 1438 * mid-layer, not for which were issued internally 1439 * 1440 * For internal command, restore the status returned by the 1441 * firmware so that user can interpret it. 1442 */ 1443 if (cmdid == CMDID_INT_CMDS) { 1444 scb = &adapter->int_scb; 1445 cmd = scb->cmd; 1446 1447 list_del_init(&scb->list); 1448 scb->state = SCB_FREE; 1449 1450 adapter->int_status = status; 1451 complete(&adapter->int_waitq); 1452 } else { 1453 scb = &adapter->scb_list[cmdid]; 1454 1455 /* 1456 * Make sure f/w has completed a valid command 1457 */ 1458 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1459 dev_crit(&adapter->dev->dev, "invalid command " 1460 "Id %d, scb->state:%x, scsi cmd:%p\n", 1461 cmdid, scb->state, scb->cmd); 1462 1463 continue; 1464 } 1465 1466 /* 1467 * Was a abort issued for this command 1468 */ 1469 if( scb->state & SCB_ABORT ) { 1470 1471 dev_warn(&adapter->dev->dev, 1472 "aborted cmd [%x] complete\n", 1473 scb->idx); 1474 1475 scb->cmd->result = (DID_ABORT << 16); 1476 1477 list_add_tail(SCSI_LIST(scb->cmd), 1478 &adapter->completed_list); 1479 1480 mega_free_scb(adapter, scb); 1481 1482 continue; 1483 } 1484 1485 /* 1486 * Was a reset issued for this command 1487 */ 1488 if( scb->state & SCB_RESET ) { 1489 1490 dev_warn(&adapter->dev->dev, 1491 "reset cmd [%x] complete\n", 1492 scb->idx); 1493 1494 scb->cmd->result = (DID_RESET << 16); 1495 1496 list_add_tail(SCSI_LIST(scb->cmd), 1497 &adapter->completed_list); 1498 1499 mega_free_scb (adapter, scb); 1500 1501 continue; 1502 } 1503 1504 cmd = scb->cmd; 1505 pthru = scb->pthru; 1506 epthru = scb->epthru; 1507 mbox = (mbox_t *)scb->raw_mbox; 1508 1509 #if MEGA_HAVE_STATS 1510 { 1511 1512 int logdrv = mbox->m_out.logdrv; 1513 1514 islogical = adapter->logdrv_chan[cmd->channel]; 1515 /* 1516 * Maintain an error counter for the logical drive. 1517 * Some application like SNMP agent need such 1518 * statistics 1519 */ 1520 if( status && islogical && (cmd->cmnd[0] == READ_6 || 1521 cmd->cmnd[0] == READ_10 || 1522 cmd->cmnd[0] == READ_12)) { 1523 /* 1524 * Logical drive number increases by 0x80 when 1525 * a logical drive is deleted 1526 */ 1527 adapter->rd_errors[logdrv%0x80]++; 1528 } 1529 1530 if( status && islogical && (cmd->cmnd[0] == WRITE_6 || 1531 cmd->cmnd[0] == WRITE_10 || 1532 cmd->cmnd[0] == WRITE_12)) { 1533 /* 1534 * Logical drive number increases by 0x80 when 1535 * a logical drive is deleted 1536 */ 1537 adapter->wr_errors[logdrv%0x80]++; 1538 } 1539 1540 } 1541 #endif 1542 } 1543 1544 /* 1545 * Do not return the presence of hard disk on the channel so, 1546 * inquiry sent, and returned data==hard disk or removable 1547 * hard disk and not logical, request should return failure! - 1548 * PJ 1549 */ 1550 islogical = adapter->logdrv_chan[cmd->device->channel]; 1551 if( cmd->cmnd[0] == INQUIRY && !islogical ) { 1552 1553 sgl = scsi_sglist(cmd); 1554 if( sg_page(sgl) ) { 1555 c = *(unsigned char *) sg_virt(&sgl[0]); 1556 } else { 1557 dev_warn(&adapter->dev->dev, "invalid sg\n"); 1558 c = 0; 1559 } 1560 1561 if(IS_RAID_CH(adapter, cmd->device->channel) && 1562 ((c & 0x1F ) == TYPE_DISK)) { 1563 status = 0xF0; 1564 } 1565 } 1566 1567 /* clear result; otherwise, success returns corrupt value */ 1568 cmd->result = 0; 1569 1570 /* Convert MegaRAID status to Linux error code */ 1571 switch (status) { 1572 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1573 cmd->result |= (DID_OK << 16); 1574 break; 1575 1576 case 0x02: /* ERROR_ABORTED, i.e. 1577 SCSI_STATUS_CHECK_CONDITION */ 1578 1579 /* set sense_buffer and result fields */ 1580 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1581 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1582 1583 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1584 14); 1585 1586 cmd->result = SAM_STAT_CHECK_CONDITION; 1587 } 1588 else { 1589 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1590 1591 memcpy(cmd->sense_buffer, 1592 epthru->reqsensearea, 14); 1593 1594 cmd->result = SAM_STAT_CHECK_CONDITION; 1595 } else 1596 scsi_build_sense(cmd, 0, 1597 ABORTED_COMMAND, 0, 0); 1598 } 1599 break; 1600 1601 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1602 SCSI_STATUS_BUSY */ 1603 cmd->result |= (DID_BUS_BUSY << 16) | status; 1604 break; 1605 1606 default: 1607 #if MEGA_HAVE_CLUSTERING 1608 /* 1609 * If TEST_UNIT_READY fails, we know 1610 * MEGA_RESERVATION_STATUS failed 1611 */ 1612 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1613 cmd->result |= (DID_ERROR << 16) | 1614 SAM_STAT_RESERVATION_CONFLICT; 1615 } 1616 else 1617 /* 1618 * Error code returned is 1 if Reserve or Release 1619 * failed or the input parameter is invalid 1620 */ 1621 if( status == 1 && 1622 (cmd->cmnd[0] == RESERVE_6 || 1623 cmd->cmnd[0] == RELEASE_6) ) { 1624 1625 cmd->result |= (DID_ERROR << 16) | 1626 SAM_STAT_RESERVATION_CONFLICT; 1627 } 1628 else 1629 #endif 1630 cmd->result |= (DID_BAD_TARGET << 16)|status; 1631 } 1632 1633 mega_free_scb(adapter, scb); 1634 1635 /* Add Scsi_Command to end of completed queue */ 1636 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1637 } 1638 } 1639 1640 1641 /* 1642 * mega_runpendq() 1643 * 1644 * Run through the list of completed requests and finish it 1645 */ 1646 static void 1647 mega_rundoneq (adapter_t *adapter) 1648 { 1649 struct megaraid_cmd_priv *cmd_priv; 1650 1651 list_for_each_entry(cmd_priv, &adapter->completed_list, entry) 1652 scsi_done(megaraid_to_scsi_cmd(cmd_priv)); 1653 1654 INIT_LIST_HEAD(&adapter->completed_list); 1655 } 1656 1657 1658 /* 1659 * Free a SCB structure 1660 * Note: We assume the scsi commands associated with this scb is not free yet. 1661 */ 1662 static void 1663 mega_free_scb(adapter_t *adapter, scb_t *scb) 1664 { 1665 switch( scb->dma_type ) { 1666 1667 case MEGA_DMA_TYPE_NONE: 1668 break; 1669 1670 case MEGA_SGLIST: 1671 scsi_dma_unmap(scb->cmd); 1672 break; 1673 default: 1674 break; 1675 } 1676 1677 /* 1678 * Remove from the pending list 1679 */ 1680 list_del_init(&scb->list); 1681 1682 /* Link the scb back into free list */ 1683 scb->state = SCB_FREE; 1684 scb->cmd = NULL; 1685 1686 list_add(&scb->list, &adapter->free_list); 1687 } 1688 1689 1690 static int 1691 __mega_busywait_mbox (adapter_t *adapter) 1692 { 1693 volatile mbox_t *mbox = adapter->mbox; 1694 long counter; 1695 1696 for (counter = 0; counter < 10000; counter++) { 1697 if (!mbox->m_in.busy) 1698 return 0; 1699 udelay(100); 1700 cond_resched(); 1701 } 1702 return -1; /* give up after 1 second */ 1703 } 1704 1705 /* 1706 * Copies data to SGLIST 1707 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1708 */ 1709 static int 1710 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1711 { 1712 struct scatterlist *sg; 1713 struct scsi_cmnd *cmd; 1714 int sgcnt; 1715 int idx; 1716 1717 cmd = scb->cmd; 1718 1719 /* 1720 * Copy Scatter-Gather list info into controller structure. 1721 * 1722 * The number of sg elements returned must not exceed our limit 1723 */ 1724 sgcnt = scsi_dma_map(cmd); 1725 1726 scb->dma_type = MEGA_SGLIST; 1727 1728 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0); 1729 1730 *len = 0; 1731 1732 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { 1733 sg = scsi_sglist(cmd); 1734 scb->dma_h_bulkdata = sg_dma_address(sg); 1735 *buf = (u32)scb->dma_h_bulkdata; 1736 *len = sg_dma_len(sg); 1737 return 0; 1738 } 1739 1740 scsi_for_each_sg(cmd, sg, sgcnt, idx) { 1741 if (adapter->has_64bit_addr) { 1742 scb->sgl64[idx].address = sg_dma_address(sg); 1743 *len += scb->sgl64[idx].length = sg_dma_len(sg); 1744 } else { 1745 scb->sgl[idx].address = sg_dma_address(sg); 1746 *len += scb->sgl[idx].length = sg_dma_len(sg); 1747 } 1748 } 1749 1750 /* Reset pointer and length fields */ 1751 *buf = scb->sgl_dma_addr; 1752 1753 /* Return count of SG requests */ 1754 return sgcnt; 1755 } 1756 1757 1758 /* 1759 * mega_8_to_40ld() 1760 * 1761 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1762 * Enquiry3 structures for later use 1763 */ 1764 static void 1765 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1766 mega_product_info *product_info) 1767 { 1768 int i; 1769 1770 product_info->max_commands = inquiry->adapter_info.max_commands; 1771 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1772 product_info->nchannels = inquiry->adapter_info.nchannels; 1773 1774 for (i = 0; i < 4; i++) { 1775 product_info->fw_version[i] = 1776 inquiry->adapter_info.fw_version[i]; 1777 1778 product_info->bios_version[i] = 1779 inquiry->adapter_info.bios_version[i]; 1780 } 1781 enquiry3->cache_flush_interval = 1782 inquiry->adapter_info.cache_flush_interval; 1783 1784 product_info->dram_size = inquiry->adapter_info.dram_size; 1785 1786 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1787 1788 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1789 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1790 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1791 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1792 } 1793 1794 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1795 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1796 } 1797 1798 static inline void 1799 mega_free_sgl(adapter_t *adapter) 1800 { 1801 scb_t *scb; 1802 int i; 1803 1804 for(i = 0; i < adapter->max_cmds; i++) { 1805 1806 scb = &adapter->scb_list[i]; 1807 1808 if( scb->sgl64 ) { 1809 dma_free_coherent(&adapter->dev->dev, 1810 sizeof(mega_sgl64) * adapter->sglen, 1811 scb->sgl64, scb->sgl_dma_addr); 1812 1813 scb->sgl64 = NULL; 1814 } 1815 1816 if( scb->pthru ) { 1817 dma_free_coherent(&adapter->dev->dev, 1818 sizeof(mega_passthru), scb->pthru, 1819 scb->pthru_dma_addr); 1820 1821 scb->pthru = NULL; 1822 } 1823 1824 if( scb->epthru ) { 1825 dma_free_coherent(&adapter->dev->dev, 1826 sizeof(mega_ext_passthru), 1827 scb->epthru, scb->epthru_dma_addr); 1828 1829 scb->epthru = NULL; 1830 } 1831 1832 } 1833 } 1834 1835 1836 /* 1837 * Get information about the card/driver 1838 */ 1839 const char * 1840 megaraid_info(struct Scsi_Host *host) 1841 { 1842 static char buffer[512]; 1843 adapter_t *adapter; 1844 1845 adapter = (adapter_t *)host->hostdata; 1846 1847 sprintf (buffer, 1848 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1849 adapter->fw_version, adapter->product_info.max_commands, 1850 adapter->host->max_id, adapter->host->max_channel, 1851 (u32)adapter->host->max_lun); 1852 return buffer; 1853 } 1854 1855 /* 1856 * Abort a previous SCSI request. Only commands on the pending list can be 1857 * aborted. All the commands issued to the F/W must complete. 1858 */ 1859 static int 1860 megaraid_abort(struct scsi_cmnd *cmd) 1861 { 1862 adapter_t *adapter; 1863 int rval; 1864 1865 adapter = (adapter_t *)cmd->device->host->hostdata; 1866 1867 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1868 1869 /* 1870 * This is required here to complete any completed requests 1871 * to be communicated over to the mid layer. 1872 */ 1873 mega_rundoneq(adapter); 1874 1875 return rval; 1876 } 1877 1878 1879 static int 1880 megaraid_reset(struct scsi_cmnd *cmd) 1881 { 1882 adapter_t *adapter; 1883 megacmd_t mc; 1884 int rval; 1885 1886 adapter = (adapter_t *)cmd->device->host->hostdata; 1887 1888 #if MEGA_HAVE_CLUSTERING 1889 mc.cmd = MEGA_CLUSTER_CMD; 1890 mc.opcode = MEGA_RESET_RESERVATIONS; 1891 1892 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1893 dev_warn(&adapter->dev->dev, "reservation reset failed\n"); 1894 } 1895 else { 1896 dev_info(&adapter->dev->dev, "reservation reset\n"); 1897 } 1898 #endif 1899 1900 spin_lock_irq(&adapter->lock); 1901 1902 rval = megaraid_abort_and_reset(adapter, NULL, SCB_RESET); 1903 1904 /* 1905 * This is required here to complete any completed requests 1906 * to be communicated over to the mid layer. 1907 */ 1908 mega_rundoneq(adapter); 1909 spin_unlock_irq(&adapter->lock); 1910 1911 return rval; 1912 } 1913 1914 /** 1915 * megaraid_abort_and_reset() 1916 * @adapter: megaraid soft state 1917 * @cmd: scsi command to be aborted or reset 1918 * @aor: abort or reset flag 1919 * 1920 * Try to locate the scsi command in the pending queue. If found and is not 1921 * issued to the controller, abort/reset it. Otherwise return failure 1922 */ 1923 static int 1924 megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor) 1925 { 1926 struct list_head *pos, *next; 1927 scb_t *scb; 1928 1929 if (aor == SCB_ABORT) 1930 dev_warn(&adapter->dev->dev, 1931 "ABORTING cmd=%x <c=%d t=%d l=%d>\n", 1932 cmd->cmnd[0], cmd->device->channel, 1933 cmd->device->id, (u32)cmd->device->lun); 1934 else 1935 dev_warn(&adapter->dev->dev, "RESETTING\n"); 1936 1937 if(list_empty(&adapter->pending_list)) 1938 return FAILED; 1939 1940 list_for_each_safe(pos, next, &adapter->pending_list) { 1941 1942 scb = list_entry(pos, scb_t, list); 1943 1944 if (!cmd || scb->cmd == cmd) { /* Found command */ 1945 1946 scb->state |= aor; 1947 1948 /* 1949 * Check if this command has firmware ownership. If 1950 * yes, we cannot reset this command. Whenever f/w 1951 * completes this command, we will return appropriate 1952 * status from ISR. 1953 */ 1954 if( scb->state & SCB_ISSUED ) { 1955 1956 dev_warn(&adapter->dev->dev, 1957 "%s[%x], fw owner\n", 1958 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1959 scb->idx); 1960 1961 return FAILED; 1962 } 1963 /* 1964 * Not yet issued! Remove from the pending 1965 * list 1966 */ 1967 dev_warn(&adapter->dev->dev, 1968 "%s-[%x], driver owner\n", 1969 (cmd) ? "ABORTING":"RESET", 1970 scb->idx); 1971 mega_free_scb(adapter, scb); 1972 1973 if (cmd) { 1974 cmd->result = (DID_ABORT << 16); 1975 list_add_tail(SCSI_LIST(cmd), 1976 &adapter->completed_list); 1977 } 1978 1979 return SUCCESS; 1980 } 1981 } 1982 1983 return FAILED; 1984 } 1985 1986 static inline int 1987 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 1988 { 1989 *pdev = pci_alloc_dev(NULL); 1990 1991 if( *pdev == NULL ) return -1; 1992 1993 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 1994 1995 if (dma_set_mask(&(*pdev)->dev, DMA_BIT_MASK(32)) != 0) { 1996 kfree(*pdev); 1997 return -1; 1998 } 1999 2000 return 0; 2001 } 2002 2003 static inline void 2004 free_local_pdev(struct pci_dev *pdev) 2005 { 2006 kfree(pdev); 2007 } 2008 2009 /** 2010 * mega_allocate_inquiry() 2011 * @dma_handle: handle returned for dma address 2012 * @pdev: handle to pci device 2013 * 2014 * allocates memory for inquiry structure 2015 */ 2016 static inline void * 2017 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2018 { 2019 return dma_alloc_coherent(&pdev->dev, sizeof(mega_inquiry3), 2020 dma_handle, GFP_KERNEL); 2021 } 2022 2023 2024 static inline void 2025 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2026 { 2027 dma_free_coherent(&pdev->dev, sizeof(mega_inquiry3), inquiry, 2028 dma_handle); 2029 } 2030 2031 2032 #ifdef CONFIG_PROC_FS 2033 /* Following code handles /proc fs */ 2034 2035 /** 2036 * proc_show_config() 2037 * @m: Synthetic file construction data 2038 * @v: File iterator 2039 * 2040 * Display configuration information about the controller. 2041 */ 2042 static int 2043 proc_show_config(struct seq_file *m, void *v) 2044 { 2045 2046 adapter_t *adapter = m->private; 2047 2048 seq_puts(m, MEGARAID_VERSION); 2049 if(adapter->product_info.product_name[0]) 2050 seq_printf(m, "%s\n", adapter->product_info.product_name); 2051 2052 seq_puts(m, "Controller Type: "); 2053 2054 if( adapter->flag & BOARD_MEMMAP ) 2055 seq_puts(m, "438/466/467/471/493/518/520/531/532\n"); 2056 else 2057 seq_puts(m, "418/428/434\n"); 2058 2059 if(adapter->flag & BOARD_40LD) 2060 seq_puts(m, "Controller Supports 40 Logical Drives\n"); 2061 2062 if(adapter->flag & BOARD_64BIT) 2063 seq_puts(m, "Controller capable of 64-bit memory addressing\n"); 2064 if( adapter->has_64bit_addr ) 2065 seq_puts(m, "Controller using 64-bit memory addressing\n"); 2066 else 2067 seq_puts(m, "Controller is not using 64-bit memory addressing\n"); 2068 2069 seq_printf(m, "Base = %08lx, Irq = %d, ", 2070 adapter->base, adapter->host->irq); 2071 2072 seq_printf(m, "Logical Drives = %d, Channels = %d\n", 2073 adapter->numldrv, adapter->product_info.nchannels); 2074 2075 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n", 2076 adapter->fw_version, adapter->bios_version, 2077 adapter->product_info.dram_size); 2078 2079 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2080 adapter->product_info.max_commands, adapter->max_cmds); 2081 2082 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb); 2083 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del); 2084 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); 2085 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv); 2086 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); 2087 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); 2088 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); 2089 seq_printf(m, "quiescent = %d\n", 2090 atomic_read(&adapter->quiescent)); 2091 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster); 2092 2093 seq_puts(m, "\nModule Parameters:\n"); 2094 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun); 2095 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io); 2096 return 0; 2097 } 2098 2099 /** 2100 * proc_show_stat() 2101 * @m: Synthetic file construction data 2102 * @v: File iterator 2103 * 2104 * Display statistical information about the I/O activity. 2105 */ 2106 static int 2107 proc_show_stat(struct seq_file *m, void *v) 2108 { 2109 adapter_t *adapter = m->private; 2110 #if MEGA_HAVE_STATS 2111 int i; 2112 #endif 2113 2114 seq_puts(m, "Statistical Information for this controller\n"); 2115 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); 2116 #if MEGA_HAVE_STATS 2117 for(i = 0; i < adapter->numldrv; i++) { 2118 seq_printf(m, "Logical Drive %d:\n", i); 2119 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n", 2120 adapter->nreads[i], adapter->nwrites[i]); 2121 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n", 2122 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2123 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n", 2124 adapter->rd_errors[i], adapter->wr_errors[i]); 2125 } 2126 #else 2127 seq_puts(m, "IO and error counters not compiled in driver.\n"); 2128 #endif 2129 return 0; 2130 } 2131 2132 2133 /** 2134 * proc_show_mbox() 2135 * @m: Synthetic file construction data 2136 * @v: File iterator 2137 * 2138 * Display mailbox information for the last command issued. This information 2139 * is good for debugging. 2140 */ 2141 static int 2142 proc_show_mbox(struct seq_file *m, void *v) 2143 { 2144 adapter_t *adapter = m->private; 2145 volatile mbox_t *mbox = adapter->mbox; 2146 2147 seq_puts(m, "Contents of Mail Box Structure\n"); 2148 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd); 2149 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid); 2150 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors); 2151 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba); 2152 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr); 2153 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv); 2154 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements); 2155 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy); 2156 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status); 2157 return 0; 2158 } 2159 2160 2161 /** 2162 * proc_show_rebuild_rate() 2163 * @m: Synthetic file construction data 2164 * @v: File iterator 2165 * 2166 * Display current rebuild rate 2167 */ 2168 static int 2169 proc_show_rebuild_rate(struct seq_file *m, void *v) 2170 { 2171 adapter_t *adapter = m->private; 2172 dma_addr_t dma_handle; 2173 caddr_t inquiry; 2174 struct pci_dev *pdev; 2175 2176 if( make_local_pdev(adapter, &pdev) != 0 ) 2177 return 0; 2178 2179 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2180 goto free_pdev; 2181 2182 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2183 seq_puts(m, "Adapter inquiry failed.\n"); 2184 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2185 goto free_inquiry; 2186 } 2187 2188 if( adapter->flag & BOARD_40LD ) 2189 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2190 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2191 else 2192 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2193 ((mraid_ext_inquiry *) 2194 inquiry)->raid_inq.adapter_info.rebuild_rate); 2195 2196 free_inquiry: 2197 mega_free_inquiry(inquiry, dma_handle, pdev); 2198 free_pdev: 2199 free_local_pdev(pdev); 2200 return 0; 2201 } 2202 2203 2204 /** 2205 * proc_show_battery() 2206 * @m: Synthetic file construction data 2207 * @v: File iterator 2208 * 2209 * Display information about the battery module on the controller. 2210 */ 2211 static int 2212 proc_show_battery(struct seq_file *m, void *v) 2213 { 2214 adapter_t *adapter = m->private; 2215 dma_addr_t dma_handle; 2216 caddr_t inquiry; 2217 struct pci_dev *pdev; 2218 u8 battery_status; 2219 2220 if( make_local_pdev(adapter, &pdev) != 0 ) 2221 return 0; 2222 2223 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2224 goto free_pdev; 2225 2226 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2227 seq_puts(m, "Adapter inquiry failed.\n"); 2228 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2229 goto free_inquiry; 2230 } 2231 2232 if( adapter->flag & BOARD_40LD ) { 2233 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2234 } 2235 else { 2236 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2237 raid_inq.adapter_info.battery_status; 2238 } 2239 2240 /* 2241 * Decode the battery status 2242 */ 2243 seq_printf(m, "Battery Status:[%d]", battery_status); 2244 2245 if(battery_status == MEGA_BATT_CHARGE_DONE) 2246 seq_puts(m, " Charge Done"); 2247 2248 if(battery_status & MEGA_BATT_MODULE_MISSING) 2249 seq_puts(m, " Module Missing"); 2250 2251 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2252 seq_puts(m, " Low Voltage"); 2253 2254 if(battery_status & MEGA_BATT_TEMP_HIGH) 2255 seq_puts(m, " Temperature High"); 2256 2257 if(battery_status & MEGA_BATT_PACK_MISSING) 2258 seq_puts(m, " Pack Missing"); 2259 2260 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2261 seq_puts(m, " Charge In-progress"); 2262 2263 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2264 seq_puts(m, " Charge Fail"); 2265 2266 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2267 seq_puts(m, " Cycles Exceeded"); 2268 2269 seq_putc(m, '\n'); 2270 2271 free_inquiry: 2272 mega_free_inquiry(inquiry, dma_handle, pdev); 2273 free_pdev: 2274 free_local_pdev(pdev); 2275 return 0; 2276 } 2277 2278 2279 /* 2280 * Display scsi inquiry 2281 */ 2282 static void 2283 mega_print_inquiry(struct seq_file *m, char *scsi_inq) 2284 { 2285 int i; 2286 2287 seq_puts(m, " Vendor: "); 2288 seq_write(m, scsi_inq + 8, 8); 2289 seq_puts(m, " Model: "); 2290 seq_write(m, scsi_inq + 16, 16); 2291 seq_puts(m, " Rev: "); 2292 seq_write(m, scsi_inq + 32, 4); 2293 seq_putc(m, '\n'); 2294 2295 i = scsi_inq[0] & 0x1f; 2296 seq_printf(m, " Type: %s ", scsi_device_type(i)); 2297 2298 seq_printf(m, " ANSI SCSI revision: %02x", 2299 scsi_inq[2] & 0x07); 2300 2301 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2302 seq_puts(m, " CCS\n"); 2303 else 2304 seq_putc(m, '\n'); 2305 } 2306 2307 /** 2308 * proc_show_pdrv() 2309 * @m: Synthetic file construction data 2310 * @adapter: pointer to our soft state 2311 * @channel: channel 2312 * 2313 * Display information about the physical drives. 2314 */ 2315 static int 2316 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel) 2317 { 2318 dma_addr_t dma_handle; 2319 char *scsi_inq; 2320 dma_addr_t scsi_inq_dma_handle; 2321 caddr_t inquiry; 2322 struct pci_dev *pdev; 2323 u8 *pdrv_state; 2324 u8 state; 2325 int tgt; 2326 int max_channels; 2327 int i; 2328 2329 if( make_local_pdev(adapter, &pdev) != 0 ) 2330 return 0; 2331 2332 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2333 goto free_pdev; 2334 2335 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2336 seq_puts(m, "Adapter inquiry failed.\n"); 2337 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2338 goto free_inquiry; 2339 } 2340 2341 2342 scsi_inq = dma_alloc_coherent(&pdev->dev, 256, &scsi_inq_dma_handle, 2343 GFP_KERNEL); 2344 if( scsi_inq == NULL ) { 2345 seq_puts(m, "memory not available for scsi inq.\n"); 2346 goto free_inquiry; 2347 } 2348 2349 if( adapter->flag & BOARD_40LD ) { 2350 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2351 } 2352 else { 2353 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2354 raid_inq.pdrv_info.pdrv_state; 2355 } 2356 2357 max_channels = adapter->product_info.nchannels; 2358 2359 if( channel >= max_channels ) { 2360 goto free_pci; 2361 } 2362 2363 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2364 2365 i = channel*16 + tgt; 2366 2367 state = *(pdrv_state + i); 2368 switch( state & 0x0F ) { 2369 case PDRV_ONLINE: 2370 seq_printf(m, "Channel:%2d Id:%2d State: Online", 2371 channel, tgt); 2372 break; 2373 2374 case PDRV_FAILED: 2375 seq_printf(m, "Channel:%2d Id:%2d State: Failed", 2376 channel, tgt); 2377 break; 2378 2379 case PDRV_RBLD: 2380 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild", 2381 channel, tgt); 2382 break; 2383 2384 case PDRV_HOTSPARE: 2385 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare", 2386 channel, tgt); 2387 break; 2388 2389 default: 2390 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured", 2391 channel, tgt); 2392 break; 2393 } 2394 2395 /* 2396 * This interface displays inquiries for disk drives 2397 * only. Inquries for logical drives and non-disk 2398 * devices are available through /proc/scsi/scsi 2399 */ 2400 memset(scsi_inq, 0, 256); 2401 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2402 scsi_inq_dma_handle) || 2403 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2404 continue; 2405 } 2406 2407 /* 2408 * Check for overflow. We print less than 240 2409 * characters for inquiry 2410 */ 2411 seq_puts(m, ".\n"); 2412 mega_print_inquiry(m, scsi_inq); 2413 } 2414 2415 free_pci: 2416 dma_free_coherent(&pdev->dev, 256, scsi_inq, scsi_inq_dma_handle); 2417 free_inquiry: 2418 mega_free_inquiry(inquiry, dma_handle, pdev); 2419 free_pdev: 2420 free_local_pdev(pdev); 2421 return 0; 2422 } 2423 2424 /** 2425 * proc_show_pdrv_ch0() 2426 * @m: Synthetic file construction data 2427 * @v: File iterator 2428 * 2429 * Display information about the physical drives on physical channel 0. 2430 */ 2431 static int 2432 proc_show_pdrv_ch0(struct seq_file *m, void *v) 2433 { 2434 return proc_show_pdrv(m, m->private, 0); 2435 } 2436 2437 2438 /** 2439 * proc_show_pdrv_ch1() 2440 * @m: Synthetic file construction data 2441 * @v: File iterator 2442 * 2443 * Display information about the physical drives on physical channel 1. 2444 */ 2445 static int 2446 proc_show_pdrv_ch1(struct seq_file *m, void *v) 2447 { 2448 return proc_show_pdrv(m, m->private, 1); 2449 } 2450 2451 2452 /** 2453 * proc_show_pdrv_ch2() 2454 * @m: Synthetic file construction data 2455 * @v: File iterator 2456 * 2457 * Display information about the physical drives on physical channel 2. 2458 */ 2459 static int 2460 proc_show_pdrv_ch2(struct seq_file *m, void *v) 2461 { 2462 return proc_show_pdrv(m, m->private, 2); 2463 } 2464 2465 2466 /** 2467 * proc_show_pdrv_ch3() 2468 * @m: Synthetic file construction data 2469 * @v: File iterator 2470 * 2471 * Display information about the physical drives on physical channel 3. 2472 */ 2473 static int 2474 proc_show_pdrv_ch3(struct seq_file *m, void *v) 2475 { 2476 return proc_show_pdrv(m, m->private, 3); 2477 } 2478 2479 2480 /** 2481 * proc_show_rdrv() 2482 * @m: Synthetic file construction data 2483 * @adapter: pointer to our soft state 2484 * @start: starting logical drive to display 2485 * @end: ending logical drive to display 2486 * 2487 * We do not print the inquiry information since its already available through 2488 * /proc/scsi/scsi interface 2489 */ 2490 static int 2491 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end ) 2492 { 2493 dma_addr_t dma_handle; 2494 logdrv_param *lparam; 2495 megacmd_t mc; 2496 char *disk_array; 2497 dma_addr_t disk_array_dma_handle; 2498 caddr_t inquiry; 2499 struct pci_dev *pdev; 2500 u8 *rdrv_state; 2501 int num_ldrv; 2502 u32 array_sz; 2503 int i; 2504 2505 if( make_local_pdev(adapter, &pdev) != 0 ) 2506 return 0; 2507 2508 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2509 goto free_pdev; 2510 2511 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2512 seq_puts(m, "Adapter inquiry failed.\n"); 2513 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2514 goto free_inquiry; 2515 } 2516 2517 memset(&mc, 0, sizeof(megacmd_t)); 2518 2519 if( adapter->flag & BOARD_40LD ) { 2520 array_sz = sizeof(disk_array_40ld); 2521 2522 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2523 2524 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2525 } 2526 else { 2527 array_sz = sizeof(disk_array_8ld); 2528 2529 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2530 raid_inq.logdrv_info.ldrv_state; 2531 2532 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2533 raid_inq.logdrv_info.num_ldrv; 2534 } 2535 2536 disk_array = dma_alloc_coherent(&pdev->dev, array_sz, 2537 &disk_array_dma_handle, GFP_KERNEL); 2538 2539 if( disk_array == NULL ) { 2540 seq_puts(m, "memory not available.\n"); 2541 goto free_inquiry; 2542 } 2543 2544 mc.xferaddr = (u32)disk_array_dma_handle; 2545 2546 if( adapter->flag & BOARD_40LD ) { 2547 mc.cmd = FC_NEW_CONFIG; 2548 mc.opcode = OP_DCMD_READ_CONFIG; 2549 2550 if( mega_internal_command(adapter, &mc, NULL) ) { 2551 seq_puts(m, "40LD read config failed.\n"); 2552 goto free_pci; 2553 } 2554 2555 } 2556 else { 2557 mc.cmd = NEW_READ_CONFIG_8LD; 2558 2559 if( mega_internal_command(adapter, &mc, NULL) ) { 2560 mc.cmd = READ_CONFIG_8LD; 2561 if( mega_internal_command(adapter, &mc, NULL) ) { 2562 seq_puts(m, "8LD read config failed.\n"); 2563 goto free_pci; 2564 } 2565 } 2566 } 2567 2568 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 2569 2570 if( adapter->flag & BOARD_40LD ) { 2571 lparam = 2572 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 2573 } 2574 else { 2575 lparam = 2576 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 2577 } 2578 2579 /* 2580 * Check for overflow. We print less than 240 characters for 2581 * information about each logical drive. 2582 */ 2583 seq_printf(m, "Logical drive:%2d:, ", i); 2584 2585 switch( rdrv_state[i] & 0x0F ) { 2586 case RDRV_OFFLINE: 2587 seq_puts(m, "state: offline"); 2588 break; 2589 case RDRV_DEGRADED: 2590 seq_puts(m, "state: degraded"); 2591 break; 2592 case RDRV_OPTIMAL: 2593 seq_puts(m, "state: optimal"); 2594 break; 2595 case RDRV_DELETED: 2596 seq_puts(m, "state: deleted"); 2597 break; 2598 default: 2599 seq_puts(m, "state: unknown"); 2600 break; 2601 } 2602 2603 /* 2604 * Check if check consistency or initialization is going on 2605 * for this logical drive. 2606 */ 2607 if( (rdrv_state[i] & 0xF0) == 0x20 ) 2608 seq_puts(m, ", check-consistency in progress"); 2609 else if( (rdrv_state[i] & 0xF0) == 0x10 ) 2610 seq_puts(m, ", initialization in progress"); 2611 2612 seq_putc(m, '\n'); 2613 2614 seq_printf(m, "Span depth:%3d, ", lparam->span_depth); 2615 seq_printf(m, "RAID level:%3d, ", lparam->level); 2616 seq_printf(m, "Stripe size:%3d, ", 2617 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 2618 seq_printf(m, "Row size:%3d\n", lparam->row_size); 2619 2620 seq_puts(m, "Read Policy: "); 2621 switch(lparam->read_ahead) { 2622 case NO_READ_AHEAD: 2623 seq_puts(m, "No read ahead, "); 2624 break; 2625 case READ_AHEAD: 2626 seq_puts(m, "Read ahead, "); 2627 break; 2628 case ADAP_READ_AHEAD: 2629 seq_puts(m, "Adaptive, "); 2630 break; 2631 2632 } 2633 2634 seq_puts(m, "Write Policy: "); 2635 switch(lparam->write_mode) { 2636 case WRMODE_WRITE_THRU: 2637 seq_puts(m, "Write thru, "); 2638 break; 2639 case WRMODE_WRITE_BACK: 2640 seq_puts(m, "Write back, "); 2641 break; 2642 } 2643 2644 seq_puts(m, "Cache Policy: "); 2645 switch(lparam->direct_io) { 2646 case CACHED_IO: 2647 seq_puts(m, "Cached IO\n\n"); 2648 break; 2649 case DIRECT_IO: 2650 seq_puts(m, "Direct IO\n\n"); 2651 break; 2652 } 2653 } 2654 2655 free_pci: 2656 dma_free_coherent(&pdev->dev, array_sz, disk_array, 2657 disk_array_dma_handle); 2658 free_inquiry: 2659 mega_free_inquiry(inquiry, dma_handle, pdev); 2660 free_pdev: 2661 free_local_pdev(pdev); 2662 return 0; 2663 } 2664 2665 /** 2666 * proc_show_rdrv_10() 2667 * @m: Synthetic file construction data 2668 * @v: File iterator 2669 * 2670 * Display real time information about the logical drives 0 through 9. 2671 */ 2672 static int 2673 proc_show_rdrv_10(struct seq_file *m, void *v) 2674 { 2675 return proc_show_rdrv(m, m->private, 0, 9); 2676 } 2677 2678 2679 /** 2680 * proc_show_rdrv_20() 2681 * @m: Synthetic file construction data 2682 * @v: File iterator 2683 * 2684 * Display real time information about the logical drives 0 through 9. 2685 */ 2686 static int 2687 proc_show_rdrv_20(struct seq_file *m, void *v) 2688 { 2689 return proc_show_rdrv(m, m->private, 10, 19); 2690 } 2691 2692 2693 /** 2694 * proc_show_rdrv_30() 2695 * @m: Synthetic file construction data 2696 * @v: File iterator 2697 * 2698 * Display real time information about the logical drives 0 through 9. 2699 */ 2700 static int 2701 proc_show_rdrv_30(struct seq_file *m, void *v) 2702 { 2703 return proc_show_rdrv(m, m->private, 20, 29); 2704 } 2705 2706 2707 /** 2708 * proc_show_rdrv_40() 2709 * @m: Synthetic file construction data 2710 * @v: File iterator 2711 * 2712 * Display real time information about the logical drives 0 through 9. 2713 */ 2714 static int 2715 proc_show_rdrv_40(struct seq_file *m, void *v) 2716 { 2717 return proc_show_rdrv(m, m->private, 30, 39); 2718 } 2719 2720 /** 2721 * mega_create_proc_entry() 2722 * @index: index in soft state array 2723 * @parent: parent node for this /proc entry 2724 * 2725 * Creates /proc entries for our controllers. 2726 */ 2727 static void 2728 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2729 { 2730 adapter_t *adapter = hba_soft_state[index]; 2731 struct proc_dir_entry *dir; 2732 u8 string[16]; 2733 2734 sprintf(string, "hba%d", adapter->host->host_no); 2735 dir = proc_mkdir_data(string, 0, parent, adapter); 2736 if (!dir) { 2737 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n"); 2738 return; 2739 } 2740 2741 proc_create_single_data("config", S_IRUSR, dir, 2742 proc_show_config, adapter); 2743 proc_create_single_data("stat", S_IRUSR, dir, 2744 proc_show_stat, adapter); 2745 proc_create_single_data("mailbox", S_IRUSR, dir, 2746 proc_show_mbox, adapter); 2747 #if MEGA_HAVE_ENH_PROC 2748 proc_create_single_data("rebuild-rate", S_IRUSR, dir, 2749 proc_show_rebuild_rate, adapter); 2750 proc_create_single_data("battery-status", S_IRUSR, dir, 2751 proc_show_battery, adapter); 2752 proc_create_single_data("diskdrives-ch0", S_IRUSR, dir, 2753 proc_show_pdrv_ch0, adapter); 2754 proc_create_single_data("diskdrives-ch1", S_IRUSR, dir, 2755 proc_show_pdrv_ch1, adapter); 2756 proc_create_single_data("diskdrives-ch2", S_IRUSR, dir, 2757 proc_show_pdrv_ch2, adapter); 2758 proc_create_single_data("diskdrives-ch3", S_IRUSR, dir, 2759 proc_show_pdrv_ch3, adapter); 2760 proc_create_single_data("raiddrives-0-9", S_IRUSR, dir, 2761 proc_show_rdrv_10, adapter); 2762 proc_create_single_data("raiddrives-10-19", S_IRUSR, dir, 2763 proc_show_rdrv_20, adapter); 2764 proc_create_single_data("raiddrives-20-29", S_IRUSR, dir, 2765 proc_show_rdrv_30, adapter); 2766 proc_create_single_data("raiddrives-30-39", S_IRUSR, dir, 2767 proc_show_rdrv_40, adapter); 2768 #endif 2769 } 2770 2771 #else 2772 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2773 { 2774 } 2775 #endif 2776 2777 2778 /* 2779 * megaraid_biosparam() 2780 * 2781 * Return the disk geometry for a particular disk 2782 */ 2783 static int 2784 megaraid_biosparam(struct scsi_device *sdev, struct gendisk *disk, 2785 sector_t capacity, int geom[]) 2786 { 2787 adapter_t *adapter; 2788 int heads; 2789 int sectors; 2790 int cylinders; 2791 2792 /* Get pointer to host config structure */ 2793 adapter = (adapter_t *)sdev->host->hostdata; 2794 2795 if (IS_RAID_CH(adapter, sdev->channel)) { 2796 /* Default heads (64) & sectors (32) */ 2797 heads = 64; 2798 sectors = 32; 2799 cylinders = (ulong)capacity / (heads * sectors); 2800 2801 /* 2802 * Handle extended translation size for logical drives 2803 * > 1Gb 2804 */ 2805 if ((ulong)capacity >= 0x200000) { 2806 heads = 255; 2807 sectors = 63; 2808 cylinders = (ulong)capacity / (heads * sectors); 2809 } 2810 2811 /* return result */ 2812 geom[0] = heads; 2813 geom[1] = sectors; 2814 geom[2] = cylinders; 2815 } 2816 else { 2817 if (scsi_partsize(disk, capacity, geom)) 2818 return 0; 2819 2820 dev_info(&adapter->dev->dev, 2821 "invalid partition on this disk on channel %d\n", 2822 sdev->channel); 2823 2824 /* Default heads (64) & sectors (32) */ 2825 heads = 64; 2826 sectors = 32; 2827 cylinders = (ulong)capacity / (heads * sectors); 2828 2829 /* Handle extended translation size for logical drives > 1Gb */ 2830 if ((ulong)capacity >= 0x200000) { 2831 heads = 255; 2832 sectors = 63; 2833 cylinders = (ulong)capacity / (heads * sectors); 2834 } 2835 2836 /* return result */ 2837 geom[0] = heads; 2838 geom[1] = sectors; 2839 geom[2] = cylinders; 2840 } 2841 2842 return 0; 2843 } 2844 2845 /** 2846 * mega_init_scb() 2847 * @adapter: pointer to our soft state 2848 * 2849 * Allocate memory for the various pointers in the scb structures: 2850 * scatter-gather list pointer, passthru and extended passthru structure 2851 * pointers. 2852 */ 2853 static int 2854 mega_init_scb(adapter_t *adapter) 2855 { 2856 scb_t *scb; 2857 int i; 2858 2859 for( i = 0; i < adapter->max_cmds; i++ ) { 2860 2861 scb = &adapter->scb_list[i]; 2862 2863 scb->sgl64 = NULL; 2864 scb->sgl = NULL; 2865 scb->pthru = NULL; 2866 scb->epthru = NULL; 2867 } 2868 2869 for( i = 0; i < adapter->max_cmds; i++ ) { 2870 2871 scb = &adapter->scb_list[i]; 2872 2873 scb->idx = i; 2874 2875 scb->sgl64 = dma_alloc_coherent(&adapter->dev->dev, 2876 sizeof(mega_sgl64) * adapter->sglen, 2877 &scb->sgl_dma_addr, GFP_KERNEL); 2878 2879 scb->sgl = (mega_sglist *)scb->sgl64; 2880 2881 if( !scb->sgl ) { 2882 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n"); 2883 mega_free_sgl(adapter); 2884 return -1; 2885 } 2886 2887 scb->pthru = dma_alloc_coherent(&adapter->dev->dev, 2888 sizeof(mega_passthru), 2889 &scb->pthru_dma_addr, GFP_KERNEL); 2890 2891 if( !scb->pthru ) { 2892 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n"); 2893 mega_free_sgl(adapter); 2894 return -1; 2895 } 2896 2897 scb->epthru = dma_alloc_coherent(&adapter->dev->dev, 2898 sizeof(mega_ext_passthru), 2899 &scb->epthru_dma_addr, GFP_KERNEL); 2900 2901 if( !scb->epthru ) { 2902 dev_warn(&adapter->dev->dev, 2903 "Can't allocate extended passthru\n"); 2904 mega_free_sgl(adapter); 2905 return -1; 2906 } 2907 2908 2909 scb->dma_type = MEGA_DMA_TYPE_NONE; 2910 2911 /* 2912 * Link to free list 2913 * lock not required since we are loading the driver, so no 2914 * commands possible right now. 2915 */ 2916 scb->state = SCB_FREE; 2917 scb->cmd = NULL; 2918 list_add(&scb->list, &adapter->free_list); 2919 } 2920 2921 return 0; 2922 } 2923 2924 2925 /** 2926 * megadev_open() 2927 * @inode: unused 2928 * @filep: unused 2929 * 2930 * Routines for the character/ioctl interface to the driver. Find out if this 2931 * is a valid open. 2932 */ 2933 static int 2934 megadev_open (struct inode *inode, struct file *filep) 2935 { 2936 /* 2937 * Only allow superuser to access private ioctl interface 2938 */ 2939 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 2940 2941 return 0; 2942 } 2943 2944 2945 /** 2946 * megadev_ioctl() 2947 * @filep: Our device file 2948 * @cmd: ioctl command 2949 * @arg: user buffer 2950 * 2951 * ioctl entry point for our private ioctl interface. We move the data in from 2952 * the user space, prepare the command (if necessary, convert the old MIMD 2953 * ioctl to new ioctl command), and issue a synchronous command to the 2954 * controller. 2955 */ 2956 static int 2957 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 2958 { 2959 adapter_t *adapter; 2960 nitioctl_t uioc; 2961 int adapno; 2962 int rval; 2963 mega_passthru __user *upthru; /* user address for passthru */ 2964 mega_passthru *pthru; /* copy user passthru here */ 2965 dma_addr_t pthru_dma_hndl; 2966 void *data = NULL; /* data to be transferred */ 2967 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 2968 megacmd_t mc; 2969 #if MEGA_HAVE_STATS 2970 megastat_t __user *ustats = NULL; 2971 int num_ldrv = 0; 2972 #endif 2973 u32 uxferaddr = 0; 2974 struct pci_dev *pdev; 2975 2976 /* 2977 * Make sure only USCSICMD are issued through this interface. 2978 * MIMD application would still fire different command. 2979 */ 2980 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 2981 return -EINVAL; 2982 } 2983 2984 /* 2985 * Check and convert a possible MIMD command to NIT command. 2986 * mega_m_to_n() copies the data from the user space, so we do not 2987 * have to do it here. 2988 * NOTE: We will need some user address to copyout the data, therefore 2989 * the inteface layer will also provide us with the required user 2990 * addresses. 2991 */ 2992 memset(&uioc, 0, sizeof(nitioctl_t)); 2993 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 2994 return rval; 2995 2996 2997 switch( uioc.opcode ) { 2998 2999 case GET_DRIVER_VER: 3000 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3001 return (-EFAULT); 3002 3003 break; 3004 3005 case GET_N_ADAP: 3006 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3007 return (-EFAULT); 3008 3009 /* 3010 * Shucks. MIMD interface returns a positive value for number 3011 * of adapters. TODO: Change it to return 0 when there is no 3012 * applicatio using mimd interface. 3013 */ 3014 return hba_count; 3015 3016 case GET_ADAP_INFO: 3017 3018 /* 3019 * Which adapter 3020 */ 3021 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3022 return (-ENODEV); 3023 3024 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3025 sizeof(struct mcontroller)) ) 3026 return (-EFAULT); 3027 break; 3028 3029 #if MEGA_HAVE_STATS 3030 3031 case GET_STATS: 3032 /* 3033 * Which adapter 3034 */ 3035 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3036 return (-ENODEV); 3037 3038 adapter = hba_soft_state[adapno]; 3039 3040 ustats = uioc.uioc_uaddr; 3041 3042 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3043 return (-EFAULT); 3044 3045 /* 3046 * Check for the validity of the logical drive number 3047 */ 3048 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3049 3050 if( copy_to_user(ustats->nreads, adapter->nreads, 3051 num_ldrv*sizeof(u32)) ) 3052 return -EFAULT; 3053 3054 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3055 num_ldrv*sizeof(u32)) ) 3056 return -EFAULT; 3057 3058 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3059 num_ldrv*sizeof(u32)) ) 3060 return -EFAULT; 3061 3062 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3063 num_ldrv*sizeof(u32)) ) 3064 return -EFAULT; 3065 3066 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3067 num_ldrv*sizeof(u32)) ) 3068 return -EFAULT; 3069 3070 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3071 num_ldrv*sizeof(u32)) ) 3072 return -EFAULT; 3073 3074 return 0; 3075 3076 #endif 3077 case MBOX_CMD: 3078 3079 /* 3080 * Which adapter 3081 */ 3082 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3083 return (-ENODEV); 3084 3085 adapter = hba_soft_state[adapno]; 3086 3087 /* 3088 * Deletion of logical drive is a special case. The adapter 3089 * should be quiescent before this command is issued. 3090 */ 3091 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3092 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3093 3094 /* 3095 * Do we support this feature 3096 */ 3097 if( !adapter->support_random_del ) { 3098 dev_warn(&adapter->dev->dev, "logdrv " 3099 "delete on non-supporting F/W\n"); 3100 3101 return (-EINVAL); 3102 } 3103 3104 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3105 3106 if( rval == 0 ) { 3107 memset(&mc, 0, sizeof(megacmd_t)); 3108 3109 mc.status = rval; 3110 3111 rval = mega_n_to_m((void __user *)arg, &mc); 3112 } 3113 3114 return rval; 3115 } 3116 /* 3117 * This interface only support the regular passthru commands. 3118 * Reject extended passthru and 64-bit passthru 3119 */ 3120 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3121 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3122 3123 dev_warn(&adapter->dev->dev, "rejected passthru\n"); 3124 3125 return (-EINVAL); 3126 } 3127 3128 /* 3129 * For all internal commands, the buffer must be allocated in 3130 * <4GB address range 3131 */ 3132 if( make_local_pdev(adapter, &pdev) != 0 ) 3133 return -EIO; 3134 3135 /* Is it a passthru command or a DCMD */ 3136 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3137 /* Passthru commands */ 3138 3139 pthru = dma_alloc_coherent(&pdev->dev, 3140 sizeof(mega_passthru), 3141 &pthru_dma_hndl, GFP_KERNEL); 3142 3143 if( pthru == NULL ) { 3144 free_local_pdev(pdev); 3145 return (-ENOMEM); 3146 } 3147 3148 /* 3149 * The user passthru structure 3150 */ 3151 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; 3152 3153 /* 3154 * Copy in the user passthru here. 3155 */ 3156 if( copy_from_user(pthru, upthru, 3157 sizeof(mega_passthru)) ) { 3158 3159 dma_free_coherent(&pdev->dev, 3160 sizeof(mega_passthru), 3161 pthru, pthru_dma_hndl); 3162 3163 free_local_pdev(pdev); 3164 3165 return (-EFAULT); 3166 } 3167 3168 /* 3169 * Is there a data transfer 3170 */ 3171 if( pthru->dataxferlen ) { 3172 data = dma_alloc_coherent(&pdev->dev, 3173 pthru->dataxferlen, 3174 &data_dma_hndl, 3175 GFP_KERNEL); 3176 3177 if( data == NULL ) { 3178 dma_free_coherent(&pdev->dev, 3179 sizeof(mega_passthru), 3180 pthru, 3181 pthru_dma_hndl); 3182 3183 free_local_pdev(pdev); 3184 3185 return (-ENOMEM); 3186 } 3187 3188 /* 3189 * Save the user address and point the kernel 3190 * address at just allocated memory 3191 */ 3192 uxferaddr = pthru->dataxferaddr; 3193 pthru->dataxferaddr = data_dma_hndl; 3194 } 3195 3196 3197 /* 3198 * Is data coming down-stream 3199 */ 3200 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3201 /* 3202 * Get the user data 3203 */ 3204 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3205 pthru->dataxferlen) ) { 3206 rval = (-EFAULT); 3207 goto freemem_and_return; 3208 } 3209 } 3210 3211 memset(&mc, 0, sizeof(megacmd_t)); 3212 3213 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3214 mc.xferaddr = (u32)pthru_dma_hndl; 3215 3216 /* 3217 * Issue the command 3218 */ 3219 mega_internal_command(adapter, &mc, pthru); 3220 3221 rval = mega_n_to_m((void __user *)arg, &mc); 3222 3223 if( rval ) goto freemem_and_return; 3224 3225 3226 /* 3227 * Is data going up-stream 3228 */ 3229 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3230 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3231 pthru->dataxferlen) ) { 3232 rval = (-EFAULT); 3233 } 3234 } 3235 3236 /* 3237 * Send the request sense data also, irrespective of 3238 * whether the user has asked for it or not. 3239 */ 3240 if (copy_to_user(upthru->reqsensearea, 3241 pthru->reqsensearea, 14)) 3242 rval = -EFAULT; 3243 3244 freemem_and_return: 3245 if( pthru->dataxferlen ) { 3246 dma_free_coherent(&pdev->dev, 3247 pthru->dataxferlen, data, 3248 data_dma_hndl); 3249 } 3250 3251 dma_free_coherent(&pdev->dev, sizeof(mega_passthru), 3252 pthru, pthru_dma_hndl); 3253 3254 free_local_pdev(pdev); 3255 3256 return rval; 3257 } 3258 else { 3259 /* DCMD commands */ 3260 3261 /* 3262 * Is there a data transfer 3263 */ 3264 if( uioc.xferlen ) { 3265 data = dma_alloc_coherent(&pdev->dev, 3266 uioc.xferlen, 3267 &data_dma_hndl, 3268 GFP_KERNEL); 3269 3270 if( data == NULL ) { 3271 free_local_pdev(pdev); 3272 return (-ENOMEM); 3273 } 3274 3275 uxferaddr = MBOX(uioc)->xferaddr; 3276 } 3277 3278 /* 3279 * Is data coming down-stream 3280 */ 3281 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3282 /* 3283 * Get the user data 3284 */ 3285 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3286 uioc.xferlen) ) { 3287 3288 dma_free_coherent(&pdev->dev, 3289 uioc.xferlen, data, 3290 data_dma_hndl); 3291 3292 free_local_pdev(pdev); 3293 3294 return (-EFAULT); 3295 } 3296 } 3297 3298 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3299 3300 mc.xferaddr = (u32)data_dma_hndl; 3301 3302 /* 3303 * Issue the command 3304 */ 3305 mega_internal_command(adapter, &mc, NULL); 3306 3307 rval = mega_n_to_m((void __user *)arg, &mc); 3308 3309 if( rval ) { 3310 if( uioc.xferlen ) { 3311 dma_free_coherent(&pdev->dev, 3312 uioc.xferlen, data, 3313 data_dma_hndl); 3314 } 3315 3316 free_local_pdev(pdev); 3317 3318 return rval; 3319 } 3320 3321 /* 3322 * Is data going up-stream 3323 */ 3324 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3325 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3326 uioc.xferlen) ) { 3327 3328 rval = (-EFAULT); 3329 } 3330 } 3331 3332 if( uioc.xferlen ) { 3333 dma_free_coherent(&pdev->dev, uioc.xferlen, 3334 data, data_dma_hndl); 3335 } 3336 3337 free_local_pdev(pdev); 3338 3339 return rval; 3340 } 3341 3342 default: 3343 return (-EINVAL); 3344 } 3345 3346 return 0; 3347 } 3348 3349 static long 3350 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3351 { 3352 int ret; 3353 3354 mutex_lock(&megadev_mutex); 3355 ret = megadev_ioctl(filep, cmd, arg); 3356 mutex_unlock(&megadev_mutex); 3357 3358 return ret; 3359 } 3360 3361 /** 3362 * mega_m_to_n() 3363 * @arg: user address 3364 * @uioc: new ioctl structure 3365 * 3366 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3367 * structure 3368 * 3369 * Converts the older mimd ioctl structure to newer NIT structure 3370 */ 3371 static int 3372 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3373 { 3374 struct uioctl_t uioc_mimd; 3375 char signature[8] = {0}; 3376 u8 opcode; 3377 u8 subopcode; 3378 3379 3380 /* 3381 * check is the application conforms to NIT. We do not have to do much 3382 * in that case. 3383 * We exploit the fact that the signature is stored in the very 3384 * beginning of the structure. 3385 */ 3386 3387 if( copy_from_user(signature, arg, 7) ) 3388 return (-EFAULT); 3389 3390 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3391 3392 /* 3393 * NOTE NOTE: The nit ioctl is still under flux because of 3394 * change of mailbox definition, in HPE. No applications yet 3395 * use this interface and let's not have applications use this 3396 * interface till the new specifitions are in place. 3397 */ 3398 return -EINVAL; 3399 #if 0 3400 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3401 return (-EFAULT); 3402 return 0; 3403 #endif 3404 } 3405 3406 /* 3407 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3408 * 3409 * Get the user ioctl structure 3410 */ 3411 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3412 return (-EFAULT); 3413 3414 3415 /* 3416 * Get the opcode and subopcode for the commands 3417 */ 3418 opcode = uioc_mimd.ui.fcs.opcode; 3419 subopcode = uioc_mimd.ui.fcs.subopcode; 3420 3421 switch (opcode) { 3422 case 0x82: 3423 3424 switch (subopcode) { 3425 3426 case MEGAIOC_QDRVRVER: /* Query driver version */ 3427 uioc->opcode = GET_DRIVER_VER; 3428 uioc->uioc_uaddr = uioc_mimd.data; 3429 break; 3430 3431 case MEGAIOC_QNADAP: /* Get # of adapters */ 3432 uioc->opcode = GET_N_ADAP; 3433 uioc->uioc_uaddr = uioc_mimd.data; 3434 break; 3435 3436 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3437 uioc->opcode = GET_ADAP_INFO; 3438 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3439 uioc->uioc_uaddr = uioc_mimd.data; 3440 break; 3441 3442 default: 3443 return(-EINVAL); 3444 } 3445 3446 break; 3447 3448 3449 case 0x81: 3450 3451 uioc->opcode = MBOX_CMD; 3452 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3453 3454 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3455 3456 uioc->xferlen = uioc_mimd.ui.fcs.length; 3457 3458 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3459 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3460 3461 break; 3462 3463 case 0x80: 3464 3465 uioc->opcode = MBOX_CMD; 3466 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3467 3468 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3469 3470 /* 3471 * Choose the xferlen bigger of input and output data 3472 */ 3473 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3474 uioc_mimd.outlen : uioc_mimd.inlen; 3475 3476 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3477 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3478 3479 break; 3480 3481 default: 3482 return (-EINVAL); 3483 3484 } 3485 3486 return 0; 3487 } 3488 3489 /* 3490 * mega_n_to_m() 3491 * @arg: user address 3492 * @mc: mailbox command 3493 * 3494 * Updates the status information to the application, depending on application 3495 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3496 */ 3497 static int 3498 mega_n_to_m(void __user *arg, megacmd_t *mc) 3499 { 3500 nitioctl_t __user *uiocp; 3501 megacmd_t __user *umc; 3502 mega_passthru __user *upthru; 3503 struct uioctl_t __user *uioc_mimd; 3504 char signature[8] = {0}; 3505 3506 /* 3507 * check is the application conforms to NIT. 3508 */ 3509 if( copy_from_user(signature, arg, 7) ) 3510 return -EFAULT; 3511 3512 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3513 3514 uiocp = arg; 3515 3516 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3517 return (-EFAULT); 3518 3519 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3520 3521 umc = MBOX_P(uiocp); 3522 3523 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3524 return -EFAULT; 3525 3526 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3527 return (-EFAULT); 3528 } 3529 } 3530 else { 3531 uioc_mimd = arg; 3532 3533 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3534 return (-EFAULT); 3535 3536 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3537 3538 umc = (megacmd_t __user *)uioc_mimd->mbox; 3539 3540 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3541 return (-EFAULT); 3542 3543 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3544 return (-EFAULT); 3545 } 3546 } 3547 3548 return 0; 3549 } 3550 3551 3552 /* 3553 * MEGARAID 'FW' commands. 3554 */ 3555 3556 /** 3557 * mega_is_bios_enabled() 3558 * @adapter: pointer to our soft state 3559 * 3560 * issue command to find out if the BIOS is enabled for this controller 3561 */ 3562 static int 3563 mega_is_bios_enabled(adapter_t *adapter) 3564 { 3565 struct mbox_out mbox; 3566 unsigned char *raw_mbox = (u8 *)&mbox; 3567 3568 memset(&mbox, 0, sizeof(mbox)); 3569 3570 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3571 3572 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3573 3574 raw_mbox[0] = IS_BIOS_ENABLED; 3575 raw_mbox[2] = GET_BIOS; 3576 3577 issue_scb_block(adapter, raw_mbox); 3578 3579 return *(char *)adapter->mega_buffer; 3580 } 3581 3582 3583 /** 3584 * mega_enum_raid_scsi() 3585 * @adapter: pointer to our soft state 3586 * 3587 * Find out what channels are RAID/SCSI. This information is used to 3588 * differentiate the virtual channels and physical channels and to support 3589 * ROMB feature and non-disk devices. 3590 */ 3591 static void 3592 mega_enum_raid_scsi(adapter_t *adapter) 3593 { 3594 struct mbox_out mbox; 3595 unsigned char *raw_mbox = (u8 *)&mbox; 3596 int i; 3597 3598 memset(&mbox, 0, sizeof(mbox)); 3599 3600 /* 3601 * issue command to find out what channels are raid/scsi 3602 */ 3603 raw_mbox[0] = CHNL_CLASS; 3604 raw_mbox[2] = GET_CHNL_CLASS; 3605 3606 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3607 3608 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3609 3610 /* 3611 * Non-ROMB firmware fail this command, so all channels 3612 * must be shown RAID 3613 */ 3614 adapter->mega_ch_class = 0xFF; 3615 3616 if(!issue_scb_block(adapter, raw_mbox)) { 3617 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 3618 3619 } 3620 3621 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3622 if( (adapter->mega_ch_class >> i) & 0x01 ) { 3623 dev_info(&adapter->dev->dev, "channel[%d] is raid\n", 3624 i); 3625 } 3626 else { 3627 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n", 3628 i); 3629 } 3630 } 3631 3632 return; 3633 } 3634 3635 3636 /** 3637 * mega_get_boot_drv() 3638 * @adapter: pointer to our soft state 3639 * 3640 * Find out which device is the boot device. Note, any logical drive or any 3641 * phyical device (e.g., a CDROM) can be designated as a boot device. 3642 */ 3643 static void 3644 mega_get_boot_drv(adapter_t *adapter) 3645 { 3646 struct private_bios_data *prv_bios_data; 3647 struct mbox_out mbox; 3648 unsigned char *raw_mbox = (u8 *)&mbox; 3649 u16 cksum = 0; 3650 u8 *cksum_p; 3651 u8 boot_pdrv; 3652 int i; 3653 3654 memset(&mbox, 0, sizeof(mbox)); 3655 3656 raw_mbox[0] = BIOS_PVT_DATA; 3657 raw_mbox[2] = GET_BIOS_PVT_DATA; 3658 3659 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3660 3661 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3662 3663 adapter->boot_ldrv_enabled = 0; 3664 adapter->boot_ldrv = 0; 3665 3666 adapter->boot_pdrv_enabled = 0; 3667 adapter->boot_pdrv_ch = 0; 3668 adapter->boot_pdrv_tgt = 0; 3669 3670 if(issue_scb_block(adapter, raw_mbox) == 0) { 3671 prv_bios_data = 3672 (struct private_bios_data *)adapter->mega_buffer; 3673 3674 cksum = 0; 3675 cksum_p = (char *)prv_bios_data; 3676 for (i = 0; i < 14; i++ ) { 3677 cksum += (u16)(*cksum_p++); 3678 } 3679 3680 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 3681 3682 /* 3683 * If MSB is set, a physical drive is set as boot 3684 * device 3685 */ 3686 if( prv_bios_data->boot_drv & 0x80 ) { 3687 adapter->boot_pdrv_enabled = 1; 3688 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 3689 adapter->boot_pdrv_ch = boot_pdrv / 16; 3690 adapter->boot_pdrv_tgt = boot_pdrv % 16; 3691 } 3692 else { 3693 adapter->boot_ldrv_enabled = 1; 3694 adapter->boot_ldrv = prv_bios_data->boot_drv; 3695 } 3696 } 3697 } 3698 3699 } 3700 3701 /** 3702 * mega_support_random_del() 3703 * @adapter: pointer to our soft state 3704 * 3705 * Find out if this controller supports random deletion and addition of 3706 * logical drives 3707 */ 3708 static int 3709 mega_support_random_del(adapter_t *adapter) 3710 { 3711 struct mbox_out mbox; 3712 unsigned char *raw_mbox = (u8 *)&mbox; 3713 int rval; 3714 3715 memset(&mbox, 0, sizeof(mbox)); 3716 3717 /* 3718 * issue command 3719 */ 3720 raw_mbox[0] = FC_DEL_LOGDRV; 3721 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 3722 3723 rval = issue_scb_block(adapter, raw_mbox); 3724 3725 return !rval; 3726 } 3727 3728 3729 /** 3730 * mega_support_ext_cdb() 3731 * @adapter: pointer to our soft state 3732 * 3733 * Find out if this firmware support cdblen > 10 3734 */ 3735 static int 3736 mega_support_ext_cdb(adapter_t *adapter) 3737 { 3738 struct mbox_out mbox; 3739 unsigned char *raw_mbox = (u8 *)&mbox; 3740 int rval; 3741 3742 memset(&mbox, 0, sizeof(mbox)); 3743 /* 3744 * issue command to find out if controller supports extended CDBs. 3745 */ 3746 raw_mbox[0] = 0xA4; 3747 raw_mbox[2] = 0x16; 3748 3749 rval = issue_scb_block(adapter, raw_mbox); 3750 3751 return !rval; 3752 } 3753 3754 3755 /** 3756 * mega_del_logdrv() 3757 * @adapter: pointer to our soft state 3758 * @logdrv: logical drive to be deleted 3759 * 3760 * Delete the specified logical drive. It is the responsibility of the user 3761 * app to let the OS know about this operation. 3762 */ 3763 static int 3764 mega_del_logdrv(adapter_t *adapter, int logdrv) 3765 { 3766 unsigned long flags; 3767 scb_t *scb; 3768 int rval; 3769 3770 /* 3771 * Stop sending commands to the controller, queue them internally. 3772 * When deletion is complete, ISR will flush the queue. 3773 */ 3774 atomic_set(&adapter->quiescent, 1); 3775 3776 /* 3777 * Wait till all the issued commands are complete and there are no 3778 * commands in the pending queue 3779 */ 3780 while (atomic_read(&adapter->pend_cmds) > 0 || 3781 !list_empty(&adapter->pending_list)) 3782 msleep(1000); /* sleep for 1s */ 3783 3784 rval = mega_do_del_logdrv(adapter, logdrv); 3785 3786 spin_lock_irqsave(&adapter->lock, flags); 3787 3788 /* 3789 * If delete operation was successful, add 0x80 to the logical drive 3790 * ids for commands in the pending queue. 3791 */ 3792 if (adapter->read_ldidmap) { 3793 struct list_head *pos; 3794 list_for_each(pos, &adapter->pending_list) { 3795 scb = list_entry(pos, scb_t, list); 3796 if (scb->pthru->logdrv < 0x80 ) 3797 scb->pthru->logdrv += 0x80; 3798 } 3799 } 3800 3801 atomic_set(&adapter->quiescent, 0); 3802 3803 mega_runpendq(adapter); 3804 3805 spin_unlock_irqrestore(&adapter->lock, flags); 3806 3807 return rval; 3808 } 3809 3810 3811 static int 3812 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 3813 { 3814 megacmd_t mc; 3815 int rval; 3816 3817 memset( &mc, 0, sizeof(megacmd_t)); 3818 3819 mc.cmd = FC_DEL_LOGDRV; 3820 mc.opcode = OP_DEL_LOGDRV; 3821 mc.subopcode = logdrv; 3822 3823 rval = mega_internal_command(adapter, &mc, NULL); 3824 3825 /* log this event */ 3826 if(rval) { 3827 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv); 3828 return rval; 3829 } 3830 3831 /* 3832 * After deleting first logical drive, the logical drives must be 3833 * addressed by adding 0x80 to the logical drive id. 3834 */ 3835 adapter->read_ldidmap = 1; 3836 3837 return rval; 3838 } 3839 3840 3841 /** 3842 * mega_get_max_sgl() 3843 * @adapter: pointer to our soft state 3844 * 3845 * Find out the maximum number of scatter-gather elements supported by this 3846 * version of the firmware 3847 */ 3848 static void 3849 mega_get_max_sgl(adapter_t *adapter) 3850 { 3851 struct mbox_out mbox; 3852 unsigned char *raw_mbox = (u8 *)&mbox; 3853 3854 memset(&mbox, 0, sizeof(mbox)); 3855 3856 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3857 3858 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3859 3860 raw_mbox[0] = MAIN_MISC_OPCODE; 3861 raw_mbox[2] = GET_MAX_SG_SUPPORT; 3862 3863 3864 if( issue_scb_block(adapter, raw_mbox) ) { 3865 /* 3866 * f/w does not support this command. Choose the default value 3867 */ 3868 adapter->sglen = MIN_SGLIST; 3869 } 3870 else { 3871 adapter->sglen = *((char *)adapter->mega_buffer); 3872 3873 /* 3874 * Make sure this is not more than the resources we are 3875 * planning to allocate 3876 */ 3877 if ( adapter->sglen > MAX_SGLIST ) 3878 adapter->sglen = MAX_SGLIST; 3879 } 3880 3881 return; 3882 } 3883 3884 3885 /** 3886 * mega_support_cluster() 3887 * @adapter: pointer to our soft state 3888 * 3889 * Find out if this firmware support cluster calls. 3890 */ 3891 static int 3892 mega_support_cluster(adapter_t *adapter) 3893 { 3894 struct mbox_out mbox; 3895 unsigned char *raw_mbox = (u8 *)&mbox; 3896 3897 memset(&mbox, 0, sizeof(mbox)); 3898 3899 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3900 3901 mbox.xferaddr = (u32)adapter->buf_dma_handle; 3902 3903 /* 3904 * Try to get the initiator id. This command will succeed iff the 3905 * clustering is available on this HBA. 3906 */ 3907 raw_mbox[0] = MEGA_GET_TARGET_ID; 3908 3909 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 3910 3911 /* 3912 * Cluster support available. Get the initiator target id. 3913 * Tell our id to mid-layer too. 3914 */ 3915 adapter->this_id = *(u32 *)adapter->mega_buffer; 3916 adapter->host->this_id = adapter->this_id; 3917 3918 return 1; 3919 } 3920 3921 return 0; 3922 } 3923 3924 #ifdef CONFIG_PROC_FS 3925 /** 3926 * mega_adapinq() 3927 * @adapter: pointer to our soft state 3928 * @dma_handle: DMA address of the buffer 3929 * 3930 * Issue internal commands while interrupts are available. 3931 * We only issue direct mailbox commands from within the driver. ioctl() 3932 * interface using these routines can issue passthru commands. 3933 */ 3934 static int 3935 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 3936 { 3937 megacmd_t mc; 3938 3939 memset(&mc, 0, sizeof(megacmd_t)); 3940 3941 if( adapter->flag & BOARD_40LD ) { 3942 mc.cmd = FC_NEW_CONFIG; 3943 mc.opcode = NC_SUBOP_ENQUIRY3; 3944 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 3945 } 3946 else { 3947 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 3948 } 3949 3950 mc.xferaddr = (u32)dma_handle; 3951 3952 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 3953 return -1; 3954 } 3955 3956 return 0; 3957 } 3958 3959 3960 /** 3961 * mega_internal_dev_inquiry() 3962 * @adapter: pointer to our soft state 3963 * @ch: channel for this device 3964 * @tgt: ID of this device 3965 * @buf_dma_handle: DMA address of the buffer 3966 * 3967 * Issue the scsi inquiry for the specified device. 3968 */ 3969 static int 3970 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 3971 dma_addr_t buf_dma_handle) 3972 { 3973 mega_passthru *pthru; 3974 dma_addr_t pthru_dma_handle; 3975 megacmd_t mc; 3976 int rval; 3977 struct pci_dev *pdev; 3978 3979 3980 /* 3981 * For all internal commands, the buffer must be allocated in <4GB 3982 * address range 3983 */ 3984 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 3985 3986 pthru = dma_alloc_coherent(&pdev->dev, sizeof(mega_passthru), 3987 &pthru_dma_handle, GFP_KERNEL); 3988 3989 if( pthru == NULL ) { 3990 free_local_pdev(pdev); 3991 return -1; 3992 } 3993 3994 pthru->timeout = 2; 3995 pthru->ars = 1; 3996 pthru->reqsenselen = 14; 3997 pthru->islogical = 0; 3998 3999 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4000 4001 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4002 4003 pthru->cdblen = 6; 4004 4005 pthru->cdb[0] = INQUIRY; 4006 pthru->cdb[1] = 0; 4007 pthru->cdb[2] = 0; 4008 pthru->cdb[3] = 0; 4009 pthru->cdb[4] = 255; 4010 pthru->cdb[5] = 0; 4011 4012 4013 pthru->dataxferaddr = (u32)buf_dma_handle; 4014 pthru->dataxferlen = 256; 4015 4016 memset(&mc, 0, sizeof(megacmd_t)); 4017 4018 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4019 mc.xferaddr = (u32)pthru_dma_handle; 4020 4021 rval = mega_internal_command(adapter, &mc, pthru); 4022 4023 dma_free_coherent(&pdev->dev, sizeof(mega_passthru), pthru, 4024 pthru_dma_handle); 4025 4026 free_local_pdev(pdev); 4027 4028 return rval; 4029 } 4030 #endif 4031 4032 /** 4033 * mega_internal_command() 4034 * @adapter: pointer to our soft state 4035 * @mc: the mailbox command 4036 * @pthru: Passthru structure for DCDB commands 4037 * 4038 * Issue the internal commands in interrupt mode. 4039 * The last argument is the address of the passthru structure if the command 4040 * to be fired is a passthru command 4041 * 4042 * Note: parameter 'pthru' is null for non-passthru commands. 4043 */ 4044 static int 4045 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4046 { 4047 unsigned long flags; 4048 scb_t *scb; 4049 int rval; 4050 4051 /* 4052 * The internal commands share one command id and hence are 4053 * serialized. This is so because we want to reserve maximum number of 4054 * available command ids for the I/O commands. 4055 */ 4056 mutex_lock(&adapter->int_mtx); 4057 4058 scb = &adapter->int_scb; 4059 memset(scb, 0, sizeof(scb_t)); 4060 4061 scb->idx = CMDID_INT_CMDS; 4062 scb->state |= SCB_ACTIVE | SCB_PENDQ; 4063 4064 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4065 4066 /* 4067 * Is it a passthru command 4068 */ 4069 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU) 4070 scb->pthru = pthru; 4071 4072 spin_lock_irqsave(&adapter->lock, flags); 4073 list_add_tail(&scb->list, &adapter->pending_list); 4074 /* 4075 * Check if the HBA is in quiescent state, e.g., during a 4076 * delete logical drive opertion. If it is, don't run 4077 * the pending_list. 4078 */ 4079 if (atomic_read(&adapter->quiescent) == 0) 4080 mega_runpendq(adapter); 4081 spin_unlock_irqrestore(&adapter->lock, flags); 4082 4083 wait_for_completion(&adapter->int_waitq); 4084 4085 mc->status = rval = adapter->int_status; 4086 4087 /* 4088 * Print a debug message for all failed commands. Applications can use 4089 * this information. 4090 */ 4091 if (rval && trace_level) { 4092 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n", 4093 mc->cmd, mc->opcode, mc->subopcode, rval); 4094 } 4095 4096 mutex_unlock(&adapter->int_mtx); 4097 return rval; 4098 } 4099 4100 static const struct scsi_host_template megaraid_template = { 4101 .module = THIS_MODULE, 4102 .name = "MegaRAID", 4103 .proc_name = "megaraid_legacy", 4104 .info = megaraid_info, 4105 .queuecommand = megaraid_queue, 4106 .bios_param = megaraid_biosparam, 4107 .max_sectors = MAX_SECTORS_PER_IO, 4108 .can_queue = MAX_COMMANDS, 4109 .this_id = DEFAULT_INITIATOR_ID, 4110 .sg_tablesize = MAX_SGLIST, 4111 .cmd_per_lun = DEF_CMD_PER_LUN, 4112 .eh_abort_handler = megaraid_abort, 4113 .eh_host_reset_handler = megaraid_reset, 4114 .no_write_same = 1, 4115 .cmd_size = sizeof(struct megaraid_cmd_priv), 4116 }; 4117 4118 static int 4119 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4120 { 4121 struct Scsi_Host *host; 4122 adapter_t *adapter; 4123 unsigned long mega_baseport, tbase, flag = 0; 4124 u16 subsysid, subsysvid; 4125 u8 pci_bus, pci_dev_func; 4126 int irq, i, j; 4127 int error = -ENODEV; 4128 4129 if (hba_count >= MAX_CONTROLLERS) 4130 goto out; 4131 4132 if (pci_enable_device(pdev)) 4133 goto out; 4134 pci_set_master(pdev); 4135 4136 pci_bus = pdev->bus->number; 4137 pci_dev_func = pdev->devfn; 4138 4139 /* 4140 * The megaraid3 stuff reports the ID of the Intel part which is not 4141 * remotely specific to the megaraid 4142 */ 4143 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4144 u16 magic; 4145 /* 4146 * Don't fall over the Compaq management cards using the same 4147 * PCI identifier 4148 */ 4149 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4150 pdev->subsystem_device == 0xC000) 4151 goto out_disable_device; 4152 /* Now check the magic signature byte */ 4153 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4154 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4155 goto out_disable_device; 4156 /* Ok it is probably a megaraid */ 4157 } 4158 4159 /* 4160 * For these vendor and device ids, signature offsets are not 4161 * valid and 64 bit is implicit 4162 */ 4163 if (id->driver_data & BOARD_64BIT) 4164 flag |= BOARD_64BIT; 4165 else { 4166 u32 magic64; 4167 4168 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4169 if (magic64 == HBA_SIGNATURE_64BIT) 4170 flag |= BOARD_64BIT; 4171 } 4172 4173 subsysvid = pdev->subsystem_vendor; 4174 subsysid = pdev->subsystem_device; 4175 4176 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n", 4177 id->vendor, id->device); 4178 4179 /* Read the base port and IRQ from PCI */ 4180 mega_baseport = pci_resource_start(pdev, 0); 4181 irq = pdev->irq; 4182 4183 tbase = mega_baseport; 4184 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4185 flag |= BOARD_MEMMAP; 4186 4187 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4188 dev_warn(&pdev->dev, "mem region busy!\n"); 4189 goto out_disable_device; 4190 } 4191 4192 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4193 if (!mega_baseport) { 4194 dev_warn(&pdev->dev, "could not map hba memory\n"); 4195 goto out_release_region; 4196 } 4197 } else { 4198 flag |= BOARD_IOMAP; 4199 mega_baseport += 0x10; 4200 4201 if (!request_region(mega_baseport, 16, "megaraid")) 4202 goto out_disable_device; 4203 } 4204 4205 /* Initialize SCSI Host structure */ 4206 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4207 if (!host) 4208 goto out_iounmap; 4209 4210 adapter = (adapter_t *)host->hostdata; 4211 memset(adapter, 0, sizeof(adapter_t)); 4212 4213 dev_notice(&pdev->dev, 4214 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4215 host->host_no, mega_baseport, irq); 4216 4217 adapter->base = mega_baseport; 4218 if (flag & BOARD_MEMMAP) 4219 adapter->mmio_base = (void __iomem *) mega_baseport; 4220 4221 INIT_LIST_HEAD(&adapter->free_list); 4222 INIT_LIST_HEAD(&adapter->pending_list); 4223 INIT_LIST_HEAD(&adapter->completed_list); 4224 4225 adapter->flag = flag; 4226 spin_lock_init(&adapter->lock); 4227 4228 host->cmd_per_lun = max_cmd_per_lun; 4229 host->max_sectors = max_sectors_per_io; 4230 4231 adapter->dev = pdev; 4232 adapter->host = host; 4233 4234 adapter->host->irq = irq; 4235 4236 if (flag & BOARD_MEMMAP) 4237 adapter->host->base = tbase; 4238 else { 4239 adapter->host->io_port = tbase; 4240 adapter->host->n_io_port = 16; 4241 } 4242 4243 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4244 4245 /* 4246 * Allocate buffer to issue internal commands. 4247 */ 4248 adapter->mega_buffer = dma_alloc_coherent(&adapter->dev->dev, 4249 MEGA_BUFFER_SIZE, 4250 &adapter->buf_dma_handle, 4251 GFP_KERNEL); 4252 if (!adapter->mega_buffer) { 4253 dev_warn(&pdev->dev, "out of RAM\n"); 4254 goto out_host_put; 4255 } 4256 4257 adapter->scb_list = kmalloc_objs(scb_t, MAX_COMMANDS); 4258 if (!adapter->scb_list) { 4259 dev_warn(&pdev->dev, "out of RAM\n"); 4260 goto out_free_cmd_buffer; 4261 } 4262 4263 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4264 megaraid_isr_memmapped : megaraid_isr_iomapped, 4265 IRQF_SHARED, "megaraid", adapter)) { 4266 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq); 4267 goto out_free_scb_list; 4268 } 4269 4270 if (mega_setup_mailbox(adapter)) 4271 goto out_free_irq; 4272 4273 if (mega_query_adapter(adapter)) 4274 goto out_free_mbox; 4275 4276 /* 4277 * Have checks for some buggy f/w 4278 */ 4279 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4280 /* 4281 * Which firmware 4282 */ 4283 if (!strcmp(adapter->fw_version, "3.00") || 4284 !strcmp(adapter->fw_version, "3.01")) { 4285 4286 dev_warn(&pdev->dev, 4287 "Your card is a Dell PERC " 4288 "2/SC RAID controller with " 4289 "firmware\nmegaraid: 3.00 or 3.01. " 4290 "This driver is known to have " 4291 "corruption issues\nmegaraid: with " 4292 "those firmware versions on this " 4293 "specific card. In order\nmegaraid: " 4294 "to protect your data, please upgrade " 4295 "your firmware to version\nmegaraid: " 4296 "3.10 or later, available from the " 4297 "Dell Technical Support web\n" 4298 "megaraid: site at\nhttp://support." 4299 "dell.com/us/en/filelib/download/" 4300 "index.asp?fileid=2940\n" 4301 ); 4302 } 4303 } 4304 4305 /* 4306 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4307 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4308 * support, since this firmware cannot handle 64 bit 4309 * addressing 4310 */ 4311 if ((subsysvid == PCI_VENDOR_ID_HP) && 4312 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4313 /* 4314 * which firmware 4315 */ 4316 if (!strcmp(adapter->fw_version, "H01.07") || 4317 !strcmp(adapter->fw_version, "H01.08") || 4318 !strcmp(adapter->fw_version, "H01.09") ) { 4319 dev_warn(&pdev->dev, 4320 "Firmware H.01.07, " 4321 "H.01.08, and H.01.09 on 1M/2M " 4322 "controllers\n" 4323 "do not support 64 bit " 4324 "addressing.\nDISABLING " 4325 "64 bit support.\n"); 4326 adapter->flag &= ~BOARD_64BIT; 4327 } 4328 } 4329 4330 if (mega_is_bios_enabled(adapter)) 4331 mega_hbas[hba_count].is_bios_enabled = 1; 4332 mega_hbas[hba_count].hostdata_addr = adapter; 4333 4334 /* 4335 * Find out which channel is raid and which is scsi. This is 4336 * for ROMB support. 4337 */ 4338 mega_enum_raid_scsi(adapter); 4339 4340 /* 4341 * Find out if a logical drive is set as the boot drive. If 4342 * there is one, will make that as the first logical drive. 4343 * ROMB: Do we have to boot from a physical drive. Then all 4344 * the physical drives would appear before the logical disks. 4345 * Else, all the physical drives would be exported to the mid 4346 * layer after logical drives. 4347 */ 4348 mega_get_boot_drv(adapter); 4349 4350 if (adapter->boot_pdrv_enabled) { 4351 j = adapter->product_info.nchannels; 4352 for( i = 0; i < j; i++ ) 4353 adapter->logdrv_chan[i] = 0; 4354 for( i = j; i < NVIRT_CHAN + j; i++ ) 4355 adapter->logdrv_chan[i] = 1; 4356 } else { 4357 for (i = 0; i < NVIRT_CHAN; i++) 4358 adapter->logdrv_chan[i] = 1; 4359 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4360 adapter->logdrv_chan[i] = 0; 4361 adapter->mega_ch_class <<= NVIRT_CHAN; 4362 } 4363 4364 /* 4365 * Do we support random deletion and addition of logical 4366 * drives 4367 */ 4368 adapter->read_ldidmap = 0; /* set it after first logdrv 4369 delete cmd */ 4370 adapter->support_random_del = mega_support_random_del(adapter); 4371 4372 /* Initialize SCBs */ 4373 if (mega_init_scb(adapter)) 4374 goto out_free_mbox; 4375 4376 /* 4377 * Reset the pending commands counter 4378 */ 4379 atomic_set(&adapter->pend_cmds, 0); 4380 4381 /* 4382 * Reset the adapter quiescent flag 4383 */ 4384 atomic_set(&adapter->quiescent, 0); 4385 4386 hba_soft_state[hba_count] = adapter; 4387 4388 /* 4389 * Fill in the structure which needs to be passed back to the 4390 * application when it does an ioctl() for controller related 4391 * information. 4392 */ 4393 i = hba_count; 4394 4395 mcontroller[i].base = mega_baseport; 4396 mcontroller[i].irq = irq; 4397 mcontroller[i].numldrv = adapter->numldrv; 4398 mcontroller[i].pcibus = pci_bus; 4399 mcontroller[i].pcidev = id->device; 4400 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4401 mcontroller[i].pciid = -1; 4402 mcontroller[i].pcivendor = id->vendor; 4403 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4404 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4405 4406 4407 /* Set the Mode of addressing to 64 bit if we can */ 4408 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4409 dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); 4410 adapter->has_64bit_addr = 1; 4411 } else { 4412 dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 4413 adapter->has_64bit_addr = 0; 4414 } 4415 4416 mutex_init(&adapter->int_mtx); 4417 init_completion(&adapter->int_waitq); 4418 4419 adapter->this_id = DEFAULT_INITIATOR_ID; 4420 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4421 4422 #if MEGA_HAVE_CLUSTERING 4423 /* 4424 * Is cluster support enabled on this controller 4425 * Note: In a cluster the HBAs ( the initiators ) will have 4426 * different target IDs and we cannot assume it to be 7. Call 4427 * to mega_support_cluster() will get the target ids also if 4428 * the cluster support is available 4429 */ 4430 adapter->has_cluster = mega_support_cluster(adapter); 4431 if (adapter->has_cluster) { 4432 dev_notice(&pdev->dev, 4433 "Cluster driver, initiator id:%d\n", 4434 adapter->this_id); 4435 } 4436 #endif 4437 4438 pci_set_drvdata(pdev, host); 4439 4440 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4441 4442 error = scsi_add_host(host, &pdev->dev); 4443 if (error) 4444 goto out_free_mbox; 4445 4446 scsi_scan_host(host); 4447 hba_count++; 4448 return 0; 4449 4450 out_free_mbox: 4451 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t), 4452 adapter->una_mbox64, adapter->una_mbox64_dma); 4453 out_free_irq: 4454 free_irq(adapter->host->irq, adapter); 4455 out_free_scb_list: 4456 kfree(adapter->scb_list); 4457 out_free_cmd_buffer: 4458 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE, 4459 adapter->mega_buffer, adapter->buf_dma_handle); 4460 out_host_put: 4461 scsi_host_put(host); 4462 out_iounmap: 4463 if (flag & BOARD_MEMMAP) 4464 iounmap((void *)mega_baseport); 4465 out_release_region: 4466 if (flag & BOARD_MEMMAP) 4467 release_mem_region(tbase, 128); 4468 else 4469 release_region(mega_baseport, 16); 4470 out_disable_device: 4471 pci_disable_device(pdev); 4472 out: 4473 return error; 4474 } 4475 4476 static void 4477 __megaraid_shutdown(adapter_t *adapter) 4478 { 4479 u_char raw_mbox[sizeof(struct mbox_out)]; 4480 mbox_t *mbox = (mbox_t *)raw_mbox; 4481 int i; 4482 4483 /* Flush adapter cache */ 4484 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4485 raw_mbox[0] = FLUSH_ADAPTER; 4486 4487 free_irq(adapter->host->irq, adapter); 4488 4489 /* Issue a blocking (interrupts disabled) command to the card */ 4490 issue_scb_block(adapter, raw_mbox); 4491 4492 /* Flush disks cache */ 4493 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4494 raw_mbox[0] = FLUSH_SYSTEM; 4495 4496 /* Issue a blocking (interrupts disabled) command to the card */ 4497 issue_scb_block(adapter, raw_mbox); 4498 4499 if (atomic_read(&adapter->pend_cmds) > 0) 4500 dev_warn(&adapter->dev->dev, "pending commands!!\n"); 4501 4502 /* 4503 * Have a delibrate delay to make sure all the caches are 4504 * actually flushed. 4505 */ 4506 for (i = 0; i <= 10; i++) 4507 mdelay(1000); 4508 } 4509 4510 static void 4511 megaraid_remove_one(struct pci_dev *pdev) 4512 { 4513 struct Scsi_Host *host = pci_get_drvdata(pdev); 4514 adapter_t *adapter = (adapter_t *)host->hostdata; 4515 char buf[12] = { 0 }; 4516 4517 scsi_remove_host(host); 4518 4519 __megaraid_shutdown(adapter); 4520 4521 /* Free our resources */ 4522 if (adapter->flag & BOARD_MEMMAP) { 4523 iounmap((void *)adapter->base); 4524 release_mem_region(adapter->host->base, 128); 4525 } else 4526 release_region(adapter->base, 16); 4527 4528 mega_free_sgl(adapter); 4529 4530 sprintf(buf, "hba%d", adapter->host->host_no); 4531 remove_proc_subtree(buf, mega_proc_dir_entry); 4532 4533 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE, 4534 adapter->mega_buffer, adapter->buf_dma_handle); 4535 kfree(adapter->scb_list); 4536 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t), 4537 adapter->una_mbox64, adapter->una_mbox64_dma); 4538 4539 scsi_host_put(host); 4540 pci_disable_device(pdev); 4541 4542 hba_count--; 4543 } 4544 4545 static void 4546 megaraid_shutdown(struct pci_dev *pdev) 4547 { 4548 struct Scsi_Host *host = pci_get_drvdata(pdev); 4549 adapter_t *adapter = (adapter_t *)host->hostdata; 4550 4551 __megaraid_shutdown(adapter); 4552 } 4553 4554 static const struct pci_device_id megaraid_pci_tbl[] = { 4555 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 4556 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4557 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 4558 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4559 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 4560 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4561 {0,} 4562 }; 4563 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 4564 4565 static struct pci_driver megaraid_pci_driver = { 4566 .name = "megaraid_legacy", 4567 .id_table = megaraid_pci_tbl, 4568 .probe = megaraid_probe_one, 4569 .remove = megaraid_remove_one, 4570 .shutdown = megaraid_shutdown, 4571 }; 4572 4573 static int __init megaraid_init(void) 4574 { 4575 int error; 4576 4577 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 4578 max_cmd_per_lun = MAX_CMD_PER_LUN; 4579 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 4580 max_mbox_busy_wait = MBOX_BUSY_WAIT; 4581 4582 #ifdef CONFIG_PROC_FS 4583 mega_proc_dir_entry = proc_mkdir("megaraid", NULL); 4584 if (!mega_proc_dir_entry) { 4585 printk(KERN_WARNING 4586 "megaraid: failed to create megaraid root\n"); 4587 } 4588 #endif 4589 error = pci_register_driver(&megaraid_pci_driver); 4590 if (error) { 4591 #ifdef CONFIG_PROC_FS 4592 remove_proc_entry("megaraid", NULL); 4593 #endif 4594 return error; 4595 } 4596 4597 /* 4598 * Register the driver as a character device, for applications 4599 * to access it for ioctls. 4600 * First argument (major) to register_chrdev implies a dynamic 4601 * major number allocation. 4602 */ 4603 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 4604 if (major < 0) { 4605 printk(KERN_WARNING 4606 "megaraid: failed to register char device\n"); 4607 } 4608 4609 return 0; 4610 } 4611 4612 static void __exit megaraid_exit(void) 4613 { 4614 /* 4615 * Unregister the character device interface to the driver. 4616 */ 4617 unregister_chrdev(major, "megadev_legacy"); 4618 4619 pci_unregister_driver(&megaraid_pci_driver); 4620 4621 #ifdef CONFIG_PROC_FS 4622 remove_proc_entry("megaraid", NULL); 4623 #endif 4624 } 4625 4626 module_init(megaraid_init); 4627 module_exit(megaraid_exit); 4628 4629 /* vi: set ts=8 sw=8 tw=78: */ 4630