1 /* 2 * 3 * Linux MegaRAID device driver 4 * 5 * Copyright (c) 2002 LSI Logic Corporation. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 * 12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved. 13 * - fixes 14 * - speed-ups (list handling fixes, issued_list, optimizations.) 15 * - lots of cleanups. 16 * 17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de> 18 * - new-style, hotplug-aware pci probing and scsi registration 19 * 20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju 21 * <Seokmann.Ju@lsil.com> 22 * 23 * Description: Linux device driver for LSI Logic MegaRAID controller 24 * 25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 26 * 518, 520, 531, 532 27 * 28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell, 29 * and others. Please send updates to the mailing list 30 * linux-scsi@vger.kernel.org . 31 * 32 */ 33 34 #include <linux/mm.h> 35 #include <linux/fs.h> 36 #include <linux/blkdev.h> 37 #include <asm/uaccess.h> 38 #include <asm/io.h> 39 #include <linux/completion.h> 40 #include <linux/delay.h> 41 #include <linux/proc_fs.h> 42 #include <linux/reboot.h> 43 #include <linux/module.h> 44 #include <linux/list.h> 45 #include <linux/interrupt.h> 46 #include <linux/pci.h> 47 #include <linux/init.h> 48 #include <linux/dma-mapping.h> 49 #include <linux/mutex.h> 50 #include <linux/slab.h> 51 #include <scsi/scsicam.h> 52 53 #include "scsi.h" 54 #include <scsi/scsi_host.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 = pci_alloc_consistent(adapter->dev, 141 sizeof(mbox64_t), &adapter->una_mbox64_dma); 142 143 if( !adapter->una_mbox64 ) return -1; 144 145 adapter->mbox = &adapter->una_mbox64->mbox; 146 147 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & 148 (~0UL ^ 0xFUL)); 149 150 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); 151 152 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); 153 154 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; 155 156 /* 157 * Register the mailbox if the controller is an io-mapped controller 158 */ 159 if( adapter->flag & BOARD_IOMAP ) { 160 161 outb(adapter->mbox_dma & 0xFF, 162 adapter->host->io_port + MBOX_PORT0); 163 164 outb((adapter->mbox_dma >> 8) & 0xFF, 165 adapter->host->io_port + MBOX_PORT1); 166 167 outb((adapter->mbox_dma >> 16) & 0xFF, 168 adapter->host->io_port + MBOX_PORT2); 169 170 outb((adapter->mbox_dma >> 24) & 0xFF, 171 adapter->host->io_port + MBOX_PORT3); 172 173 outb(ENABLE_MBOX_BYTE, 174 adapter->host->io_port + ENABLE_MBOX_REGION); 175 176 irq_ack(adapter); 177 178 irq_enable(adapter); 179 } 180 181 return 0; 182 } 183 184 185 /* 186 * mega_query_adapter() 187 * @adapter - pointer to our soft state 188 * 189 * Issue the adapter inquiry commands to the controller and find out 190 * information and parameter about the devices attached 191 */ 192 static int 193 mega_query_adapter(adapter_t *adapter) 194 { 195 dma_addr_t prod_info_dma_handle; 196 mega_inquiry3 *inquiry3; 197 u8 raw_mbox[sizeof(struct mbox_out)]; 198 mbox_t *mbox; 199 int retval; 200 201 /* Initialize adapter inquiry mailbox */ 202 203 mbox = (mbox_t *)raw_mbox; 204 205 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 206 memset(&mbox->m_out, 0, sizeof(raw_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->m_out.xferaddr = (u32)adapter->buf_dma_handle; 214 215 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; 216 217 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 218 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ 219 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ 220 221 /* Issue a blocking command to the card */ 222 if ((retval = issue_scb_block(adapter, raw_mbox))) { 223 /* the adapter does not support 40ld */ 224 225 mraid_ext_inquiry *ext_inq; 226 mraid_inquiry *inq; 227 dma_addr_t dma_handle; 228 229 ext_inq = pci_alloc_consistent(adapter->dev, 230 sizeof(mraid_ext_inquiry), &dma_handle); 231 232 if( ext_inq == NULL ) return -1; 233 234 inq = &ext_inq->raid_inq; 235 236 mbox->m_out.xferaddr = (u32)dma_handle; 237 238 /*issue old 0x04 command to adapter */ 239 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ; 240 241 issue_scb_block(adapter, raw_mbox); 242 243 /* 244 * update Enquiry3 and ProductInfo structures with 245 * mraid_inquiry structure 246 */ 247 mega_8_to_40ld(inq, inquiry3, 248 (mega_product_info *)&adapter->product_info); 249 250 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry), 251 ext_inq, dma_handle); 252 253 } else { /*adapter supports 40ld */ 254 adapter->flag |= BOARD_40LD; 255 256 /* 257 * get product_info, which is static information and will be 258 * unchanged 259 */ 260 prod_info_dma_handle = pci_map_single(adapter->dev, (void *) 261 &adapter->product_info, 262 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 263 264 mbox->m_out.xferaddr = prod_info_dma_handle; 265 266 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 267 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ 268 269 if ((retval = issue_scb_block(adapter, raw_mbox))) 270 printk(KERN_WARNING 271 "megaraid: Product_info cmd failed with error: %d\n", 272 retval); 273 274 pci_unmap_single(adapter->dev, prod_info_dma_handle, 275 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 276 } 277 278 279 /* 280 * kernel scans the channels from 0 to <= max_channel 281 */ 282 adapter->host->max_channel = 283 adapter->product_info.nchannels + NVIRT_CHAN -1; 284 285 adapter->host->max_id = 16; /* max targets per channel */ 286 287 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */ 288 289 adapter->host->cmd_per_lun = max_cmd_per_lun; 290 291 adapter->numldrv = inquiry3->num_ldrv; 292 293 adapter->max_cmds = adapter->product_info.max_commands; 294 295 if(adapter->max_cmds > MAX_COMMANDS) 296 adapter->max_cmds = MAX_COMMANDS; 297 298 adapter->host->can_queue = adapter->max_cmds - 1; 299 300 /* 301 * Get the maximum number of scatter-gather elements supported by this 302 * firmware 303 */ 304 mega_get_max_sgl(adapter); 305 306 adapter->host->sg_tablesize = adapter->sglen; 307 308 309 /* use HP firmware and bios version encoding */ 310 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) { 311 sprintf (adapter->fw_version, "%c%d%d.%d%d", 312 adapter->product_info.fw_version[2], 313 adapter->product_info.fw_version[1] >> 8, 314 adapter->product_info.fw_version[1] & 0x0f, 315 adapter->product_info.fw_version[0] >> 8, 316 adapter->product_info.fw_version[0] & 0x0f); 317 sprintf (adapter->bios_version, "%c%d%d.%d%d", 318 adapter->product_info.bios_version[2], 319 adapter->product_info.bios_version[1] >> 8, 320 adapter->product_info.bios_version[1] & 0x0f, 321 adapter->product_info.bios_version[0] >> 8, 322 adapter->product_info.bios_version[0] & 0x0f); 323 } else { 324 memcpy(adapter->fw_version, 325 (char *)adapter->product_info.fw_version, 4); 326 adapter->fw_version[4] = 0; 327 328 memcpy(adapter->bios_version, 329 (char *)adapter->product_info.bios_version, 4); 330 331 adapter->bios_version[4] = 0; 332 } 333 334 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n", 335 adapter->fw_version, adapter->bios_version, adapter->numldrv); 336 337 /* 338 * Do we support extended (>10 bytes) cdbs 339 */ 340 adapter->support_ext_cdb = mega_support_ext_cdb(adapter); 341 if (adapter->support_ext_cdb) 342 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n"); 343 344 345 return 0; 346 } 347 348 /** 349 * mega_runpendq() 350 * @adapter - pointer to our soft state 351 * 352 * Runs through the list of pending requests. 353 */ 354 static inline void 355 mega_runpendq(adapter_t *adapter) 356 { 357 if(!list_empty(&adapter->pending_list)) 358 __mega_runpendq(adapter); 359 } 360 361 /* 362 * megaraid_queue() 363 * @scmd - Issue this scsi command 364 * @done - the callback hook into the scsi mid-layer 365 * 366 * The command queuing entry point for the mid-layer. 367 */ 368 static int 369 megaraid_queue_lck(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *)) 370 { 371 adapter_t *adapter; 372 scb_t *scb; 373 int busy=0; 374 unsigned long flags; 375 376 adapter = (adapter_t *)scmd->device->host->hostdata; 377 378 scmd->scsi_done = done; 379 380 381 /* 382 * Allocate and build a SCB request 383 * busy flag will be set if mega_build_cmd() command could not 384 * allocate scb. We will return non-zero status in that case. 385 * NOTE: scb can be null even though certain commands completed 386 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would 387 * return 0 in that case. 388 */ 389 390 spin_lock_irqsave(&adapter->lock, flags); 391 scb = mega_build_cmd(adapter, scmd, &busy); 392 if (!scb) 393 goto out; 394 395 scb->state |= SCB_PENDQ; 396 list_add_tail(&scb->list, &adapter->pending_list); 397 398 /* 399 * Check if the HBA is in quiescent state, e.g., during a 400 * delete logical drive opertion. If it is, don't run 401 * the pending_list. 402 */ 403 if (atomic_read(&adapter->quiescent) == 0) 404 mega_runpendq(adapter); 405 406 busy = 0; 407 out: 408 spin_unlock_irqrestore(&adapter->lock, flags); 409 return busy; 410 } 411 412 static DEF_SCSI_QCMD(megaraid_queue) 413 414 /** 415 * mega_allocate_scb() 416 * @adapter - pointer to our soft state 417 * @cmd - scsi command from the mid-layer 418 * 419 * Allocate a SCB structure. This is the central structure for controller 420 * commands. 421 */ 422 static inline scb_t * 423 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd) 424 { 425 struct list_head *head = &adapter->free_list; 426 scb_t *scb; 427 428 /* Unlink command from Free List */ 429 if( !list_empty(head) ) { 430 431 scb = list_entry(head->next, scb_t, list); 432 433 list_del_init(head->next); 434 435 scb->state = SCB_ACTIVE; 436 scb->cmd = cmd; 437 scb->dma_type = MEGA_DMA_TYPE_NONE; 438 439 return scb; 440 } 441 442 return NULL; 443 } 444 445 /** 446 * mega_get_ldrv_num() 447 * @adapter - pointer to our soft state 448 * @cmd - scsi mid layer command 449 * @channel - channel on the controller 450 * 451 * Calculate the logical drive number based on the information in scsi command 452 * and the channel number. 453 */ 454 static inline int 455 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel) 456 { 457 int tgt; 458 int ldrv_num; 459 460 tgt = cmd->device->id; 461 462 if ( tgt > adapter->this_id ) 463 tgt--; /* we do not get inquires for initiator id */ 464 465 ldrv_num = (channel * 15) + tgt; 466 467 468 /* 469 * If we have a logical drive with boot enabled, project it first 470 */ 471 if( adapter->boot_ldrv_enabled ) { 472 if( ldrv_num == 0 ) { 473 ldrv_num = adapter->boot_ldrv; 474 } 475 else { 476 if( ldrv_num <= adapter->boot_ldrv ) { 477 ldrv_num--; 478 } 479 } 480 } 481 482 /* 483 * If "delete logical drive" feature is enabled on this controller. 484 * Do only if at least one delete logical drive operation was done. 485 * 486 * Also, after logical drive deletion, instead of logical drive number, 487 * the value returned should be 0x80+logical drive id. 488 * 489 * These is valid only for IO commands. 490 */ 491 492 if (adapter->support_random_del && adapter->read_ldidmap ) 493 switch (cmd->cmnd[0]) { 494 case READ_6: /* fall through */ 495 case WRITE_6: /* fall through */ 496 case READ_10: /* fall through */ 497 case WRITE_10: 498 ldrv_num += 0x80; 499 } 500 501 return ldrv_num; 502 } 503 504 /** 505 * mega_build_cmd() 506 * @adapter - pointer to our soft state 507 * @cmd - Prepare using this scsi command 508 * @busy - busy flag if no resources 509 * 510 * Prepares a command and scatter gather list for the controller. This routine 511 * also finds out if the commands is intended for a logical drive or a 512 * physical device and prepares the controller command accordingly. 513 * 514 * We also re-order the logical drives and physical devices based on their 515 * boot settings. 516 */ 517 static scb_t * 518 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy) 519 { 520 mega_ext_passthru *epthru; 521 mega_passthru *pthru; 522 scb_t *scb; 523 mbox_t *mbox; 524 long seg; 525 char islogical; 526 int max_ldrv_num; 527 int channel = 0; 528 int target = 0; 529 int ldrv_num = 0; /* logical drive number */ 530 531 532 /* 533 * filter the internal and ioctl commands 534 */ 535 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) 536 return (scb_t *)cmd->host_scribble; 537 538 /* 539 * We know what channels our logical drives are on - mega_find_card() 540 */ 541 islogical = adapter->logdrv_chan[cmd->device->channel]; 542 543 /* 544 * The theory: If physical drive is chosen for boot, all the physical 545 * devices are exported before the logical drives, otherwise physical 546 * devices are pushed after logical drives, in which case - Kernel sees 547 * the physical devices on virtual channel which is obviously converted 548 * to actual channel on the HBA. 549 */ 550 if( adapter->boot_pdrv_enabled ) { 551 if( islogical ) { 552 /* logical channel */ 553 channel = cmd->device->channel - 554 adapter->product_info.nchannels; 555 } 556 else { 557 /* this is physical channel */ 558 channel = cmd->device->channel; 559 target = cmd->device->id; 560 561 /* 562 * boot from a physical disk, that disk needs to be 563 * exposed first IF both the channels are SCSI, then 564 * booting from the second channel is not allowed. 565 */ 566 if( target == 0 ) { 567 target = adapter->boot_pdrv_tgt; 568 } 569 else if( target == adapter->boot_pdrv_tgt ) { 570 target = 0; 571 } 572 } 573 } 574 else { 575 if( islogical ) { 576 /* this is the logical channel */ 577 channel = cmd->device->channel; 578 } 579 else { 580 /* physical channel */ 581 channel = cmd->device->channel - NVIRT_CHAN; 582 target = cmd->device->id; 583 } 584 } 585 586 587 if(islogical) { 588 589 /* have just LUN 0 for each target on virtual channels */ 590 if (cmd->device->lun) { 591 cmd->result = (DID_BAD_TARGET << 16); 592 cmd->scsi_done(cmd); 593 return NULL; 594 } 595 596 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 597 598 599 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 600 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 601 602 /* 603 * max_ldrv_num increases by 0x80 if some logical drive was 604 * deleted. 605 */ 606 if(adapter->read_ldidmap) 607 max_ldrv_num += 0x80; 608 609 if(ldrv_num > max_ldrv_num ) { 610 cmd->result = (DID_BAD_TARGET << 16); 611 cmd->scsi_done(cmd); 612 return NULL; 613 } 614 615 } 616 else { 617 if( cmd->device->lun > 7) { 618 /* 619 * Do not support lun >7 for physically accessed 620 * devices 621 */ 622 cmd->result = (DID_BAD_TARGET << 16); 623 cmd->scsi_done(cmd); 624 return NULL; 625 } 626 } 627 628 /* 629 * 630 * Logical drive commands 631 * 632 */ 633 if(islogical) { 634 switch (cmd->cmnd[0]) { 635 case TEST_UNIT_READY: 636 #if MEGA_HAVE_CLUSTERING 637 /* 638 * Do we support clustering and is the support enabled 639 * If no, return success always 640 */ 641 if( !adapter->has_cluster ) { 642 cmd->result = (DID_OK << 16); 643 cmd->scsi_done(cmd); 644 return NULL; 645 } 646 647 if(!(scb = mega_allocate_scb(adapter, cmd))) { 648 *busy = 1; 649 return NULL; 650 } 651 652 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 653 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 654 scb->raw_mbox[3] = ldrv_num; 655 656 scb->dma_direction = PCI_DMA_NONE; 657 658 return scb; 659 #else 660 cmd->result = (DID_OK << 16); 661 cmd->scsi_done(cmd); 662 return NULL; 663 #endif 664 665 case MODE_SENSE: { 666 char *buf; 667 struct scatterlist *sg; 668 669 sg = scsi_sglist(cmd); 670 buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; 671 672 memset(buf, 0, cmd->cmnd[4]); 673 kunmap_atomic(buf - sg->offset, KM_IRQ0); 674 675 cmd->result = (DID_OK << 16); 676 cmd->scsi_done(cmd); 677 return NULL; 678 } 679 680 case READ_CAPACITY: 681 case INQUIRY: 682 683 if(!(adapter->flag & (1L << cmd->device->channel))) { 684 685 printk(KERN_NOTICE 686 "scsi%d: scanning scsi channel %d ", 687 adapter->host->host_no, 688 cmd->device->channel); 689 printk("for logical drives.\n"); 690 691 adapter->flag |= (1L << cmd->device->channel); 692 } 693 694 /* Allocate a SCB and initialize passthru */ 695 if(!(scb = mega_allocate_scb(adapter, cmd))) { 696 *busy = 1; 697 return NULL; 698 } 699 pthru = scb->pthru; 700 701 mbox = (mbox_t *)scb->raw_mbox; 702 memset(mbox, 0, sizeof(scb->raw_mbox)); 703 memset(pthru, 0, sizeof(mega_passthru)); 704 705 pthru->timeout = 0; 706 pthru->ars = 1; 707 pthru->reqsenselen = 14; 708 pthru->islogical = 1; 709 pthru->logdrv = ldrv_num; 710 pthru->cdblen = cmd->cmd_len; 711 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 712 713 if( adapter->has_64bit_addr ) { 714 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 715 } 716 else { 717 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 718 } 719 720 scb->dma_direction = PCI_DMA_FROMDEVICE; 721 722 pthru->numsgelements = mega_build_sglist(adapter, scb, 723 &pthru->dataxferaddr, &pthru->dataxferlen); 724 725 mbox->m_out.xferaddr = scb->pthru_dma_addr; 726 727 return scb; 728 729 case READ_6: 730 case WRITE_6: 731 case READ_10: 732 case WRITE_10: 733 case READ_12: 734 case WRITE_12: 735 736 /* Allocate a SCB and initialize mailbox */ 737 if(!(scb = mega_allocate_scb(adapter, cmd))) { 738 *busy = 1; 739 return NULL; 740 } 741 mbox = (mbox_t *)scb->raw_mbox; 742 743 memset(mbox, 0, sizeof(scb->raw_mbox)); 744 mbox->m_out.logdrv = ldrv_num; 745 746 /* 747 * A little hack: 2nd bit is zero for all scsi read 748 * commands and is set for all scsi write commands 749 */ 750 if( adapter->has_64bit_addr ) { 751 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 752 MEGA_MBOXCMD_LWRITE64: 753 MEGA_MBOXCMD_LREAD64 ; 754 } 755 else { 756 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 757 MEGA_MBOXCMD_LWRITE: 758 MEGA_MBOXCMD_LREAD ; 759 } 760 761 /* 762 * 6-byte READ(0x08) or WRITE(0x0A) cdb 763 */ 764 if( cmd->cmd_len == 6 ) { 765 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 766 mbox->m_out.lba = 767 ((u32)cmd->cmnd[1] << 16) | 768 ((u32)cmd->cmnd[2] << 8) | 769 (u32)cmd->cmnd[3]; 770 771 mbox->m_out.lba &= 0x1FFFFF; 772 773 #if MEGA_HAVE_STATS 774 /* 775 * Take modulo 0x80, since the logical drive 776 * number increases by 0x80 when a logical 777 * drive was deleted 778 */ 779 if (*cmd->cmnd == READ_6) { 780 adapter->nreads[ldrv_num%0x80]++; 781 adapter->nreadblocks[ldrv_num%0x80] += 782 mbox->m_out.numsectors; 783 } else { 784 adapter->nwrites[ldrv_num%0x80]++; 785 adapter->nwriteblocks[ldrv_num%0x80] += 786 mbox->m_out.numsectors; 787 } 788 #endif 789 } 790 791 /* 792 * 10-byte READ(0x28) or WRITE(0x2A) cdb 793 */ 794 if( cmd->cmd_len == 10 ) { 795 mbox->m_out.numsectors = 796 (u32)cmd->cmnd[8] | 797 ((u32)cmd->cmnd[7] << 8); 798 mbox->m_out.lba = 799 ((u32)cmd->cmnd[2] << 24) | 800 ((u32)cmd->cmnd[3] << 16) | 801 ((u32)cmd->cmnd[4] << 8) | 802 (u32)cmd->cmnd[5]; 803 804 #if MEGA_HAVE_STATS 805 if (*cmd->cmnd == READ_10) { 806 adapter->nreads[ldrv_num%0x80]++; 807 adapter->nreadblocks[ldrv_num%0x80] += 808 mbox->m_out.numsectors; 809 } else { 810 adapter->nwrites[ldrv_num%0x80]++; 811 adapter->nwriteblocks[ldrv_num%0x80] += 812 mbox->m_out.numsectors; 813 } 814 #endif 815 } 816 817 /* 818 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 819 */ 820 if( cmd->cmd_len == 12 ) { 821 mbox->m_out.lba = 822 ((u32)cmd->cmnd[2] << 24) | 823 ((u32)cmd->cmnd[3] << 16) | 824 ((u32)cmd->cmnd[4] << 8) | 825 (u32)cmd->cmnd[5]; 826 827 mbox->m_out.numsectors = 828 ((u32)cmd->cmnd[6] << 24) | 829 ((u32)cmd->cmnd[7] << 16) | 830 ((u32)cmd->cmnd[8] << 8) | 831 (u32)cmd->cmnd[9]; 832 833 #if MEGA_HAVE_STATS 834 if (*cmd->cmnd == READ_12) { 835 adapter->nreads[ldrv_num%0x80]++; 836 adapter->nreadblocks[ldrv_num%0x80] += 837 mbox->m_out.numsectors; 838 } else { 839 adapter->nwrites[ldrv_num%0x80]++; 840 adapter->nwriteblocks[ldrv_num%0x80] += 841 mbox->m_out.numsectors; 842 } 843 #endif 844 } 845 846 /* 847 * If it is a read command 848 */ 849 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 850 scb->dma_direction = PCI_DMA_FROMDEVICE; 851 } 852 else { 853 scb->dma_direction = PCI_DMA_TODEVICE; 854 } 855 856 /* Calculate Scatter-Gather info */ 857 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 858 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg); 859 860 return scb; 861 862 #if MEGA_HAVE_CLUSTERING 863 case RESERVE: /* Fall through */ 864 case RELEASE: 865 866 /* 867 * Do we support clustering and is the support enabled 868 */ 869 if( ! adapter->has_cluster ) { 870 871 cmd->result = (DID_BAD_TARGET << 16); 872 cmd->scsi_done(cmd); 873 return NULL; 874 } 875 876 /* Allocate a SCB and initialize mailbox */ 877 if(!(scb = mega_allocate_scb(adapter, cmd))) { 878 *busy = 1; 879 return NULL; 880 } 881 882 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 883 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? 884 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 885 886 scb->raw_mbox[3] = ldrv_num; 887 888 scb->dma_direction = PCI_DMA_NONE; 889 890 return scb; 891 #endif 892 893 default: 894 cmd->result = (DID_BAD_TARGET << 16); 895 cmd->scsi_done(cmd); 896 return NULL; 897 } 898 } 899 900 /* 901 * Passthru drive commands 902 */ 903 else { 904 /* Allocate a SCB and initialize passthru */ 905 if(!(scb = mega_allocate_scb(adapter, cmd))) { 906 *busy = 1; 907 return NULL; 908 } 909 910 mbox = (mbox_t *)scb->raw_mbox; 911 memset(mbox, 0, sizeof(scb->raw_mbox)); 912 913 if( adapter->support_ext_cdb ) { 914 915 epthru = mega_prepare_extpassthru(adapter, scb, cmd, 916 channel, target); 917 918 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 919 920 mbox->m_out.xferaddr = scb->epthru_dma_addr; 921 922 } 923 else { 924 925 pthru = mega_prepare_passthru(adapter, scb, cmd, 926 channel, target); 927 928 /* Initialize mailbox */ 929 if( adapter->has_64bit_addr ) { 930 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 931 } 932 else { 933 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 934 } 935 936 mbox->m_out.xferaddr = scb->pthru_dma_addr; 937 938 } 939 return scb; 940 } 941 return NULL; 942 } 943 944 945 /** 946 * mega_prepare_passthru() 947 * @adapter - pointer to our soft state 948 * @scb - our scsi control block 949 * @cmd - scsi command from the mid-layer 950 * @channel - actual channel on the controller 951 * @target - actual id on the controller. 952 * 953 * prepare a command for the scsi physical devices. 954 */ 955 static mega_passthru * 956 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 957 int channel, int target) 958 { 959 mega_passthru *pthru; 960 961 pthru = scb->pthru; 962 memset(pthru, 0, sizeof (mega_passthru)); 963 964 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 965 pthru->timeout = 2; 966 967 pthru->ars = 1; 968 pthru->reqsenselen = 14; 969 pthru->islogical = 0; 970 971 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 972 973 pthru->target = (adapter->flag & BOARD_40LD) ? 974 (channel << 4) | target : target; 975 976 pthru->cdblen = cmd->cmd_len; 977 pthru->logdrv = cmd->device->lun; 978 979 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 980 981 /* Not sure about the direction */ 982 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 983 984 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 985 switch (cmd->cmnd[0]) { 986 case INQUIRY: 987 case READ_CAPACITY: 988 if(!(adapter->flag & (1L << cmd->device->channel))) { 989 990 printk(KERN_NOTICE 991 "scsi%d: scanning scsi channel %d [P%d] ", 992 adapter->host->host_no, 993 cmd->device->channel, channel); 994 printk("for physical devices.\n"); 995 996 adapter->flag |= (1L << cmd->device->channel); 997 } 998 /* Fall through */ 999 default: 1000 pthru->numsgelements = mega_build_sglist(adapter, scb, 1001 &pthru->dataxferaddr, &pthru->dataxferlen); 1002 break; 1003 } 1004 return pthru; 1005 } 1006 1007 1008 /** 1009 * mega_prepare_extpassthru() 1010 * @adapter - pointer to our soft state 1011 * @scb - our scsi control block 1012 * @cmd - scsi command from the mid-layer 1013 * @channel - actual channel on the controller 1014 * @target - actual id on the controller. 1015 * 1016 * prepare a command for the scsi physical devices. This rountine prepares 1017 * commands for devices which can take extended CDBs (>10 bytes) 1018 */ 1019 static mega_ext_passthru * 1020 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 1021 int channel, int target) 1022 { 1023 mega_ext_passthru *epthru; 1024 1025 epthru = scb->epthru; 1026 memset(epthru, 0, sizeof(mega_ext_passthru)); 1027 1028 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1029 epthru->timeout = 2; 1030 1031 epthru->ars = 1; 1032 epthru->reqsenselen = 14; 1033 epthru->islogical = 0; 1034 1035 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1036 epthru->target = (adapter->flag & BOARD_40LD) ? 1037 (channel << 4) | target : target; 1038 1039 epthru->cdblen = cmd->cmd_len; 1040 epthru->logdrv = cmd->device->lun; 1041 1042 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1043 1044 /* Not sure about the direction */ 1045 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 1046 1047 switch(cmd->cmnd[0]) { 1048 case INQUIRY: 1049 case READ_CAPACITY: 1050 if(!(adapter->flag & (1L << cmd->device->channel))) { 1051 1052 printk(KERN_NOTICE 1053 "scsi%d: scanning scsi channel %d [P%d] ", 1054 adapter->host->host_no, 1055 cmd->device->channel, channel); 1056 printk("for physical devices.\n"); 1057 1058 adapter->flag |= (1L << cmd->device->channel); 1059 } 1060 /* Fall through */ 1061 default: 1062 epthru->numsgelements = mega_build_sglist(adapter, scb, 1063 &epthru->dataxferaddr, &epthru->dataxferlen); 1064 break; 1065 } 1066 1067 return epthru; 1068 } 1069 1070 static void 1071 __mega_runpendq(adapter_t *adapter) 1072 { 1073 scb_t *scb; 1074 struct list_head *pos, *next; 1075 1076 /* Issue any pending commands to the card */ 1077 list_for_each_safe(pos, next, &adapter->pending_list) { 1078 1079 scb = list_entry(pos, scb_t, list); 1080 1081 if( !(scb->state & SCB_ISSUED) ) { 1082 1083 if( issue_scb(adapter, scb) != 0 ) 1084 return; 1085 } 1086 } 1087 1088 return; 1089 } 1090 1091 1092 /** 1093 * issue_scb() 1094 * @adapter - pointer to our soft state 1095 * @scb - scsi control block 1096 * 1097 * Post a command to the card if the mailbox is available, otherwise return 1098 * busy. We also take the scb from the pending list if the mailbox is 1099 * available. 1100 */ 1101 static int 1102 issue_scb(adapter_t *adapter, scb_t *scb) 1103 { 1104 volatile mbox64_t *mbox64 = adapter->mbox64; 1105 volatile mbox_t *mbox = adapter->mbox; 1106 unsigned int i = 0; 1107 1108 if(unlikely(mbox->m_in.busy)) { 1109 do { 1110 udelay(1); 1111 i++; 1112 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1113 1114 if(mbox->m_in.busy) return -1; 1115 } 1116 1117 /* Copy mailbox data into host structure */ 1118 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1119 sizeof(struct mbox_out)); 1120 1121 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1122 mbox->m_in.busy = 1; /* Set busy */ 1123 1124 1125 /* 1126 * Increment the pending queue counter 1127 */ 1128 atomic_inc(&adapter->pend_cmds); 1129 1130 switch (mbox->m_out.cmd) { 1131 case MEGA_MBOXCMD_LREAD64: 1132 case MEGA_MBOXCMD_LWRITE64: 1133 case MEGA_MBOXCMD_PASSTHRU64: 1134 case MEGA_MBOXCMD_EXTPTHRU: 1135 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1136 mbox64->xfer_segment_hi = 0; 1137 mbox->m_out.xferaddr = 0xFFFFFFFF; 1138 break; 1139 default: 1140 mbox64->xfer_segment_lo = 0; 1141 mbox64->xfer_segment_hi = 0; 1142 } 1143 1144 /* 1145 * post the command 1146 */ 1147 scb->state |= SCB_ISSUED; 1148 1149 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1150 mbox->m_in.poll = 0; 1151 mbox->m_in.ack = 0; 1152 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1153 } 1154 else { 1155 irq_enable(adapter); 1156 issue_command(adapter); 1157 } 1158 1159 return 0; 1160 } 1161 1162 /* 1163 * Wait until the controller's mailbox is available 1164 */ 1165 static inline int 1166 mega_busywait_mbox (adapter_t *adapter) 1167 { 1168 if (adapter->mbox->m_in.busy) 1169 return __mega_busywait_mbox(adapter); 1170 return 0; 1171 } 1172 1173 /** 1174 * issue_scb_block() 1175 * @adapter - pointer to our soft state 1176 * @raw_mbox - the mailbox 1177 * 1178 * Issue a scb in synchronous and non-interrupt mode 1179 */ 1180 static int 1181 issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1182 { 1183 volatile mbox64_t *mbox64 = adapter->mbox64; 1184 volatile mbox_t *mbox = adapter->mbox; 1185 u8 byte; 1186 1187 /* Wait until mailbox is free */ 1188 if(mega_busywait_mbox (adapter)) 1189 goto bug_blocked_mailbox; 1190 1191 /* Copy mailbox data into host structure */ 1192 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1193 mbox->m_out.cmdid = 0xFE; 1194 mbox->m_in.busy = 1; 1195 1196 switch (raw_mbox[0]) { 1197 case MEGA_MBOXCMD_LREAD64: 1198 case MEGA_MBOXCMD_LWRITE64: 1199 case MEGA_MBOXCMD_PASSTHRU64: 1200 case MEGA_MBOXCMD_EXTPTHRU: 1201 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1202 mbox64->xfer_segment_hi = 0; 1203 mbox->m_out.xferaddr = 0xFFFFFFFF; 1204 break; 1205 default: 1206 mbox64->xfer_segment_lo = 0; 1207 mbox64->xfer_segment_hi = 0; 1208 } 1209 1210 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1211 mbox->m_in.poll = 0; 1212 mbox->m_in.ack = 0; 1213 mbox->m_in.numstatus = 0xFF; 1214 mbox->m_in.status = 0xFF; 1215 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1216 1217 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1218 cpu_relax(); 1219 1220 mbox->m_in.numstatus = 0xFF; 1221 1222 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1223 cpu_relax(); 1224 1225 mbox->m_in.poll = 0; 1226 mbox->m_in.ack = 0x77; 1227 1228 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1229 1230 while(RDINDOOR(adapter) & 0x2) 1231 cpu_relax(); 1232 } 1233 else { 1234 irq_disable(adapter); 1235 issue_command(adapter); 1236 1237 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1238 cpu_relax(); 1239 1240 set_irq_state(adapter, byte); 1241 irq_enable(adapter); 1242 irq_ack(adapter); 1243 } 1244 1245 return mbox->m_in.status; 1246 1247 bug_blocked_mailbox: 1248 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n"); 1249 udelay (1000); 1250 return -1; 1251 } 1252 1253 1254 /** 1255 * megaraid_isr_iomapped() 1256 * @irq - irq 1257 * @devp - pointer to our soft state 1258 * 1259 * Interrupt service routine for io-mapped controllers. 1260 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1261 * and service the completed commands. 1262 */ 1263 static irqreturn_t 1264 megaraid_isr_iomapped(int irq, void *devp) 1265 { 1266 adapter_t *adapter = devp; 1267 unsigned long flags; 1268 u8 status; 1269 u8 nstatus; 1270 u8 completed[MAX_FIRMWARE_STATUS]; 1271 u8 byte; 1272 int handled = 0; 1273 1274 1275 /* 1276 * loop till F/W has more commands for us to complete. 1277 */ 1278 spin_lock_irqsave(&adapter->lock, flags); 1279 1280 do { 1281 /* Check if a valid interrupt is pending */ 1282 byte = irq_state(adapter); 1283 if( (byte & VALID_INTR_BYTE) == 0 ) { 1284 /* 1285 * No more pending commands 1286 */ 1287 goto out_unlock; 1288 } 1289 set_irq_state(adapter, byte); 1290 1291 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1292 == 0xFF) 1293 cpu_relax(); 1294 adapter->mbox->m_in.numstatus = 0xFF; 1295 1296 status = adapter->mbox->m_in.status; 1297 1298 /* 1299 * decrement the pending queue counter 1300 */ 1301 atomic_sub(nstatus, &adapter->pend_cmds); 1302 1303 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1304 nstatus); 1305 1306 /* Acknowledge interrupt */ 1307 irq_ack(adapter); 1308 1309 mega_cmd_done(adapter, completed, nstatus, status); 1310 1311 mega_rundoneq(adapter); 1312 1313 handled = 1; 1314 1315 /* Loop through any pending requests */ 1316 if(atomic_read(&adapter->quiescent) == 0) { 1317 mega_runpendq(adapter); 1318 } 1319 1320 } while(1); 1321 1322 out_unlock: 1323 1324 spin_unlock_irqrestore(&adapter->lock, flags); 1325 1326 return IRQ_RETVAL(handled); 1327 } 1328 1329 1330 /** 1331 * megaraid_isr_memmapped() 1332 * @irq - irq 1333 * @devp - pointer to our soft state 1334 * 1335 * Interrupt service routine for memory-mapped controllers. 1336 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1337 * and service the completed commands. 1338 */ 1339 static irqreturn_t 1340 megaraid_isr_memmapped(int irq, void *devp) 1341 { 1342 adapter_t *adapter = devp; 1343 unsigned long flags; 1344 u8 status; 1345 u32 dword = 0; 1346 u8 nstatus; 1347 u8 completed[MAX_FIRMWARE_STATUS]; 1348 int handled = 0; 1349 1350 1351 /* 1352 * loop till F/W has more commands for us to complete. 1353 */ 1354 spin_lock_irqsave(&adapter->lock, flags); 1355 1356 do { 1357 /* Check if a valid interrupt is pending */ 1358 dword = RDOUTDOOR(adapter); 1359 if(dword != 0x10001234) { 1360 /* 1361 * No more pending commands 1362 */ 1363 goto out_unlock; 1364 } 1365 WROUTDOOR(adapter, 0x10001234); 1366 1367 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1368 == 0xFF) { 1369 cpu_relax(); 1370 } 1371 adapter->mbox->m_in.numstatus = 0xFF; 1372 1373 status = adapter->mbox->m_in.status; 1374 1375 /* 1376 * decrement the pending queue counter 1377 */ 1378 atomic_sub(nstatus, &adapter->pend_cmds); 1379 1380 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1381 nstatus); 1382 1383 /* Acknowledge interrupt */ 1384 WRINDOOR(adapter, 0x2); 1385 1386 handled = 1; 1387 1388 while( RDINDOOR(adapter) & 0x02 ) 1389 cpu_relax(); 1390 1391 mega_cmd_done(adapter, completed, nstatus, status); 1392 1393 mega_rundoneq(adapter); 1394 1395 /* Loop through any pending requests */ 1396 if(atomic_read(&adapter->quiescent) == 0) { 1397 mega_runpendq(adapter); 1398 } 1399 1400 } while(1); 1401 1402 out_unlock: 1403 1404 spin_unlock_irqrestore(&adapter->lock, flags); 1405 1406 return IRQ_RETVAL(handled); 1407 } 1408 /** 1409 * mega_cmd_done() 1410 * @adapter - pointer to our soft state 1411 * @completed - array of ids of completed commands 1412 * @nstatus - number of completed commands 1413 * @status - status of the last command completed 1414 * 1415 * Complete the comamnds and call the scsi mid-layer callback hooks. 1416 */ 1417 static void 1418 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1419 { 1420 mega_ext_passthru *epthru = NULL; 1421 struct scatterlist *sgl; 1422 Scsi_Cmnd *cmd = NULL; 1423 mega_passthru *pthru = NULL; 1424 mbox_t *mbox = NULL; 1425 u8 c; 1426 scb_t *scb; 1427 int islogical; 1428 int cmdid; 1429 int i; 1430 1431 /* 1432 * for all the commands completed, call the mid-layer callback routine 1433 * and free the scb. 1434 */ 1435 for( i = 0; i < nstatus; i++ ) { 1436 1437 cmdid = completed[i]; 1438 1439 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1440 scb = &adapter->int_scb; 1441 cmd = scb->cmd; 1442 mbox = (mbox_t *)scb->raw_mbox; 1443 1444 /* 1445 * Internal command interface do not fire the extended 1446 * passthru or 64-bit passthru 1447 */ 1448 pthru = scb->pthru; 1449 1450 } 1451 else { 1452 scb = &adapter->scb_list[cmdid]; 1453 1454 /* 1455 * Make sure f/w has completed a valid command 1456 */ 1457 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1458 printk(KERN_CRIT 1459 "megaraid: invalid command "); 1460 printk("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 printk(KERN_WARNING 1472 "megaraid: aborted cmd %lx[%x] complete.\n", 1473 scb->cmd->serial_number, 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 printk(KERN_WARNING 1491 "megaraid: reset cmd %lx[%x] complete.\n", 1492 scb->cmd->serial_number, 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 printk(KERN_WARNING 1558 "megaraid: invalid sg.\n"); 1559 c = 0; 1560 } 1561 1562 if(IS_RAID_CH(adapter, cmd->device->channel) && 1563 ((c & 0x1F ) == TYPE_DISK)) { 1564 status = 0xF0; 1565 } 1566 } 1567 1568 /* clear result; otherwise, success returns corrupt value */ 1569 cmd->result = 0; 1570 1571 /* Convert MegaRAID status to Linux error code */ 1572 switch (status) { 1573 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1574 cmd->result |= (DID_OK << 16); 1575 break; 1576 1577 case 0x02: /* ERROR_ABORTED, i.e. 1578 SCSI_STATUS_CHECK_CONDITION */ 1579 1580 /* set sense_buffer and result fields */ 1581 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1582 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1583 1584 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1585 14); 1586 1587 cmd->result = (DRIVER_SENSE << 24) | 1588 (DID_OK << 16) | 1589 (CHECK_CONDITION << 1); 1590 } 1591 else { 1592 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1593 1594 memcpy(cmd->sense_buffer, 1595 epthru->reqsensearea, 14); 1596 1597 cmd->result = (DRIVER_SENSE << 24) | 1598 (DID_OK << 16) | 1599 (CHECK_CONDITION << 1); 1600 } else { 1601 cmd->sense_buffer[0] = 0x70; 1602 cmd->sense_buffer[2] = ABORTED_COMMAND; 1603 cmd->result |= (CHECK_CONDITION << 1); 1604 } 1605 } 1606 break; 1607 1608 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1609 SCSI_STATUS_BUSY */ 1610 cmd->result |= (DID_BUS_BUSY << 16) | status; 1611 break; 1612 1613 default: 1614 #if MEGA_HAVE_CLUSTERING 1615 /* 1616 * If TEST_UNIT_READY fails, we know 1617 * MEGA_RESERVATION_STATUS failed 1618 */ 1619 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1620 cmd->result |= (DID_ERROR << 16) | 1621 (RESERVATION_CONFLICT << 1); 1622 } 1623 else 1624 /* 1625 * Error code returned is 1 if Reserve or Release 1626 * failed or the input parameter is invalid 1627 */ 1628 if( status == 1 && 1629 (cmd->cmnd[0] == RESERVE || 1630 cmd->cmnd[0] == RELEASE) ) { 1631 1632 cmd->result |= (DID_ERROR << 16) | 1633 (RESERVATION_CONFLICT << 1); 1634 } 1635 else 1636 #endif 1637 cmd->result |= (DID_BAD_TARGET << 16)|status; 1638 } 1639 1640 /* 1641 * Only free SCBs for the commands coming down from the 1642 * mid-layer, not for which were issued internally 1643 * 1644 * For internal command, restore the status returned by the 1645 * firmware so that user can interpret it. 1646 */ 1647 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1648 cmd->result = status; 1649 1650 /* 1651 * Remove the internal command from the pending list 1652 */ 1653 list_del_init(&scb->list); 1654 scb->state = SCB_FREE; 1655 } 1656 else { 1657 mega_free_scb(adapter, scb); 1658 } 1659 1660 /* Add Scsi_Command to end of completed queue */ 1661 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1662 } 1663 } 1664 1665 1666 /* 1667 * mega_runpendq() 1668 * 1669 * Run through the list of completed requests and finish it 1670 */ 1671 static void 1672 mega_rundoneq (adapter_t *adapter) 1673 { 1674 Scsi_Cmnd *cmd; 1675 struct list_head *pos; 1676 1677 list_for_each(pos, &adapter->completed_list) { 1678 1679 struct scsi_pointer* spos = (struct scsi_pointer *)pos; 1680 1681 cmd = list_entry(spos, Scsi_Cmnd, SCp); 1682 cmd->scsi_done(cmd); 1683 } 1684 1685 INIT_LIST_HEAD(&adapter->completed_list); 1686 } 1687 1688 1689 /* 1690 * Free a SCB structure 1691 * Note: We assume the scsi commands associated with this scb is not free yet. 1692 */ 1693 static void 1694 mega_free_scb(adapter_t *adapter, scb_t *scb) 1695 { 1696 switch( scb->dma_type ) { 1697 1698 case MEGA_DMA_TYPE_NONE: 1699 break; 1700 1701 case MEGA_SGLIST: 1702 scsi_dma_unmap(scb->cmd); 1703 break; 1704 default: 1705 break; 1706 } 1707 1708 /* 1709 * Remove from the pending list 1710 */ 1711 list_del_init(&scb->list); 1712 1713 /* Link the scb back into free list */ 1714 scb->state = SCB_FREE; 1715 scb->cmd = NULL; 1716 1717 list_add(&scb->list, &adapter->free_list); 1718 } 1719 1720 1721 static int 1722 __mega_busywait_mbox (adapter_t *adapter) 1723 { 1724 volatile mbox_t *mbox = adapter->mbox; 1725 long counter; 1726 1727 for (counter = 0; counter < 10000; counter++) { 1728 if (!mbox->m_in.busy) 1729 return 0; 1730 udelay(100); 1731 cond_resched(); 1732 } 1733 return -1; /* give up after 1 second */ 1734 } 1735 1736 /* 1737 * Copies data to SGLIST 1738 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1739 */ 1740 static int 1741 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1742 { 1743 struct scatterlist *sg; 1744 Scsi_Cmnd *cmd; 1745 int sgcnt; 1746 int idx; 1747 1748 cmd = scb->cmd; 1749 1750 /* 1751 * Copy Scatter-Gather list info into controller structure. 1752 * 1753 * The number of sg elements returned must not exceed our limit 1754 */ 1755 sgcnt = scsi_dma_map(cmd); 1756 1757 scb->dma_type = MEGA_SGLIST; 1758 1759 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0); 1760 1761 *len = 0; 1762 1763 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { 1764 sg = scsi_sglist(cmd); 1765 scb->dma_h_bulkdata = sg_dma_address(sg); 1766 *buf = (u32)scb->dma_h_bulkdata; 1767 *len = sg_dma_len(sg); 1768 return 0; 1769 } 1770 1771 scsi_for_each_sg(cmd, sg, sgcnt, idx) { 1772 if (adapter->has_64bit_addr) { 1773 scb->sgl64[idx].address = sg_dma_address(sg); 1774 *len += scb->sgl64[idx].length = sg_dma_len(sg); 1775 } else { 1776 scb->sgl[idx].address = sg_dma_address(sg); 1777 *len += scb->sgl[idx].length = sg_dma_len(sg); 1778 } 1779 } 1780 1781 /* Reset pointer and length fields */ 1782 *buf = scb->sgl_dma_addr; 1783 1784 /* Return count of SG requests */ 1785 return sgcnt; 1786 } 1787 1788 1789 /* 1790 * mega_8_to_40ld() 1791 * 1792 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1793 * Enquiry3 structures for later use 1794 */ 1795 static void 1796 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1797 mega_product_info *product_info) 1798 { 1799 int i; 1800 1801 product_info->max_commands = inquiry->adapter_info.max_commands; 1802 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1803 product_info->nchannels = inquiry->adapter_info.nchannels; 1804 1805 for (i = 0; i < 4; i++) { 1806 product_info->fw_version[i] = 1807 inquiry->adapter_info.fw_version[i]; 1808 1809 product_info->bios_version[i] = 1810 inquiry->adapter_info.bios_version[i]; 1811 } 1812 enquiry3->cache_flush_interval = 1813 inquiry->adapter_info.cache_flush_interval; 1814 1815 product_info->dram_size = inquiry->adapter_info.dram_size; 1816 1817 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1818 1819 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1820 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1821 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1822 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1823 } 1824 1825 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1826 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1827 } 1828 1829 static inline void 1830 mega_free_sgl(adapter_t *adapter) 1831 { 1832 scb_t *scb; 1833 int i; 1834 1835 for(i = 0; i < adapter->max_cmds; i++) { 1836 1837 scb = &adapter->scb_list[i]; 1838 1839 if( scb->sgl64 ) { 1840 pci_free_consistent(adapter->dev, 1841 sizeof(mega_sgl64) * adapter->sglen, 1842 scb->sgl64, 1843 scb->sgl_dma_addr); 1844 1845 scb->sgl64 = NULL; 1846 } 1847 1848 if( scb->pthru ) { 1849 pci_free_consistent(adapter->dev, sizeof(mega_passthru), 1850 scb->pthru, scb->pthru_dma_addr); 1851 1852 scb->pthru = NULL; 1853 } 1854 1855 if( scb->epthru ) { 1856 pci_free_consistent(adapter->dev, 1857 sizeof(mega_ext_passthru), 1858 scb->epthru, scb->epthru_dma_addr); 1859 1860 scb->epthru = NULL; 1861 } 1862 1863 } 1864 } 1865 1866 1867 /* 1868 * Get information about the card/driver 1869 */ 1870 const char * 1871 megaraid_info(struct Scsi_Host *host) 1872 { 1873 static char buffer[512]; 1874 adapter_t *adapter; 1875 1876 adapter = (adapter_t *)host->hostdata; 1877 1878 sprintf (buffer, 1879 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1880 adapter->fw_version, adapter->product_info.max_commands, 1881 adapter->host->max_id, adapter->host->max_channel, 1882 adapter->host->max_lun); 1883 return buffer; 1884 } 1885 1886 /* 1887 * Abort a previous SCSI request. Only commands on the pending list can be 1888 * aborted. All the commands issued to the F/W must complete. 1889 */ 1890 static int 1891 megaraid_abort(Scsi_Cmnd *cmd) 1892 { 1893 adapter_t *adapter; 1894 int rval; 1895 1896 adapter = (adapter_t *)cmd->device->host->hostdata; 1897 1898 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1899 1900 /* 1901 * This is required here to complete any completed requests 1902 * to be communicated over to the mid layer. 1903 */ 1904 mega_rundoneq(adapter); 1905 1906 return rval; 1907 } 1908 1909 1910 static int 1911 megaraid_reset(struct scsi_cmnd *cmd) 1912 { 1913 adapter_t *adapter; 1914 megacmd_t mc; 1915 int rval; 1916 1917 adapter = (adapter_t *)cmd->device->host->hostdata; 1918 1919 #if MEGA_HAVE_CLUSTERING 1920 mc.cmd = MEGA_CLUSTER_CMD; 1921 mc.opcode = MEGA_RESET_RESERVATIONS; 1922 1923 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1924 printk(KERN_WARNING 1925 "megaraid: reservation reset failed.\n"); 1926 } 1927 else { 1928 printk(KERN_INFO "megaraid: reservation reset.\n"); 1929 } 1930 #endif 1931 1932 spin_lock_irq(&adapter->lock); 1933 1934 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 1935 1936 /* 1937 * This is required here to complete any completed requests 1938 * to be communicated over to the mid layer. 1939 */ 1940 mega_rundoneq(adapter); 1941 spin_unlock_irq(&adapter->lock); 1942 1943 return rval; 1944 } 1945 1946 /** 1947 * megaraid_abort_and_reset() 1948 * @adapter - megaraid soft state 1949 * @cmd - scsi command to be aborted or reset 1950 * @aor - abort or reset flag 1951 * 1952 * Try to locate the scsi command in the pending queue. If found and is not 1953 * issued to the controller, abort/reset it. Otherwise return failure 1954 */ 1955 static int 1956 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor) 1957 { 1958 struct list_head *pos, *next; 1959 scb_t *scb; 1960 1961 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n", 1962 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number, 1963 cmd->cmnd[0], cmd->device->channel, 1964 cmd->device->id, cmd->device->lun); 1965 1966 if(list_empty(&adapter->pending_list)) 1967 return FALSE; 1968 1969 list_for_each_safe(pos, next, &adapter->pending_list) { 1970 1971 scb = list_entry(pos, scb_t, list); 1972 1973 if (scb->cmd == cmd) { /* Found command */ 1974 1975 scb->state |= aor; 1976 1977 /* 1978 * Check if this command has firmware ownership. If 1979 * yes, we cannot reset this command. Whenever f/w 1980 * completes this command, we will return appropriate 1981 * status from ISR. 1982 */ 1983 if( scb->state & SCB_ISSUED ) { 1984 1985 printk(KERN_WARNING 1986 "megaraid: %s-%lx[%x], fw owner.\n", 1987 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1988 cmd->serial_number, scb->idx); 1989 1990 return FALSE; 1991 } 1992 else { 1993 1994 /* 1995 * Not yet issued! Remove from the pending 1996 * list 1997 */ 1998 printk(KERN_WARNING 1999 "megaraid: %s-%lx[%x], driver owner.\n", 2000 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2001 cmd->serial_number, scb->idx); 2002 2003 mega_free_scb(adapter, scb); 2004 2005 if( aor == SCB_ABORT ) { 2006 cmd->result = (DID_ABORT << 16); 2007 } 2008 else { 2009 cmd->result = (DID_RESET << 16); 2010 } 2011 2012 list_add_tail(SCSI_LIST(cmd), 2013 &adapter->completed_list); 2014 2015 return TRUE; 2016 } 2017 } 2018 } 2019 2020 return FALSE; 2021 } 2022 2023 static inline int 2024 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2025 { 2026 *pdev = alloc_pci_dev(); 2027 2028 if( *pdev == NULL ) return -1; 2029 2030 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2031 2032 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) { 2033 kfree(*pdev); 2034 return -1; 2035 } 2036 2037 return 0; 2038 } 2039 2040 static inline void 2041 free_local_pdev(struct pci_dev *pdev) 2042 { 2043 kfree(pdev); 2044 } 2045 2046 /** 2047 * mega_allocate_inquiry() 2048 * @dma_handle - handle returned for dma address 2049 * @pdev - handle to pci device 2050 * 2051 * allocates memory for inquiry structure 2052 */ 2053 static inline void * 2054 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2055 { 2056 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2057 } 2058 2059 2060 static inline void 2061 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2062 { 2063 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2064 } 2065 2066 2067 #ifdef CONFIG_PROC_FS 2068 /* Following code handles /proc fs */ 2069 2070 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \ 2071 S_IRUSR | S_IFREG, \ 2072 controller_proc_dir_entry, \ 2073 func, adapter) 2074 2075 /** 2076 * mega_create_proc_entry() 2077 * @index - index in soft state array 2078 * @parent - parent node for this /proc entry 2079 * 2080 * Creates /proc entries for our controllers. 2081 */ 2082 static void 2083 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2084 { 2085 struct proc_dir_entry *controller_proc_dir_entry = NULL; 2086 u8 string[64] = { 0 }; 2087 adapter_t *adapter = hba_soft_state[index]; 2088 2089 sprintf(string, "hba%d", adapter->host->host_no); 2090 2091 controller_proc_dir_entry = 2092 adapter->controller_proc_dir_entry = proc_mkdir(string, parent); 2093 2094 if(!controller_proc_dir_entry) { 2095 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n"); 2096 return; 2097 } 2098 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config); 2099 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat); 2100 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox); 2101 #if MEGA_HAVE_ENH_PROC 2102 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate); 2103 adapter->proc_battery = CREATE_READ_PROC("battery-status", 2104 proc_battery); 2105 2106 /* 2107 * Display each physical drive on its channel 2108 */ 2109 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0", 2110 proc_pdrv_ch0); 2111 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1", 2112 proc_pdrv_ch1); 2113 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2", 2114 proc_pdrv_ch2); 2115 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3", 2116 proc_pdrv_ch3); 2117 2118 /* 2119 * Display a set of up to 10 logical drive through each of following 2120 * /proc entries 2121 */ 2122 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9", 2123 proc_rdrv_10); 2124 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19", 2125 proc_rdrv_20); 2126 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29", 2127 proc_rdrv_30); 2128 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39", 2129 proc_rdrv_40); 2130 #endif 2131 } 2132 2133 2134 /** 2135 * proc_read_config() 2136 * @page - buffer to write the data in 2137 * @start - where the actual data has been written in page 2138 * @offset - same meaning as the read system call 2139 * @count - same meaning as the read system call 2140 * @eof - set if no more data needs to be returned 2141 * @data - pointer to our soft state 2142 * 2143 * Display configuration information about the controller. 2144 */ 2145 static int 2146 proc_read_config(char *page, char **start, off_t offset, int count, int *eof, 2147 void *data) 2148 { 2149 2150 adapter_t *adapter = (adapter_t *)data; 2151 int len = 0; 2152 2153 len += sprintf(page+len, "%s", MEGARAID_VERSION); 2154 2155 if(adapter->product_info.product_name[0]) 2156 len += sprintf(page+len, "%s\n", 2157 adapter->product_info.product_name); 2158 2159 len += sprintf(page+len, "Controller Type: "); 2160 2161 if( adapter->flag & BOARD_MEMMAP ) { 2162 len += sprintf(page+len, 2163 "438/466/467/471/493/518/520/531/532\n"); 2164 } 2165 else { 2166 len += sprintf(page+len, 2167 "418/428/434\n"); 2168 } 2169 2170 if(adapter->flag & BOARD_40LD) { 2171 len += sprintf(page+len, 2172 "Controller Supports 40 Logical Drives\n"); 2173 } 2174 2175 if(adapter->flag & BOARD_64BIT) { 2176 len += sprintf(page+len, 2177 "Controller capable of 64-bit memory addressing\n"); 2178 } 2179 if( adapter->has_64bit_addr ) { 2180 len += sprintf(page+len, 2181 "Controller using 64-bit memory addressing\n"); 2182 } 2183 else { 2184 len += sprintf(page+len, 2185 "Controller is not using 64-bit memory addressing\n"); 2186 } 2187 2188 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base, 2189 adapter->host->irq); 2190 2191 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n", 2192 adapter->numldrv, adapter->product_info.nchannels); 2193 2194 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n", 2195 adapter->fw_version, adapter->bios_version, 2196 adapter->product_info.dram_size); 2197 2198 len += sprintf(page+len, 2199 "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2200 adapter->product_info.max_commands, adapter->max_cmds); 2201 2202 len += sprintf(page+len, "support_ext_cdb = %d\n", 2203 adapter->support_ext_cdb); 2204 len += sprintf(page+len, "support_random_del = %d\n", 2205 adapter->support_random_del); 2206 len += sprintf(page+len, "boot_ldrv_enabled = %d\n", 2207 adapter->boot_ldrv_enabled); 2208 len += sprintf(page+len, "boot_ldrv = %d\n", 2209 adapter->boot_ldrv); 2210 len += sprintf(page+len, "boot_pdrv_enabled = %d\n", 2211 adapter->boot_pdrv_enabled); 2212 len += sprintf(page+len, "boot_pdrv_ch = %d\n", 2213 adapter->boot_pdrv_ch); 2214 len += sprintf(page+len, "boot_pdrv_tgt = %d\n", 2215 adapter->boot_pdrv_tgt); 2216 len += sprintf(page+len, "quiescent = %d\n", 2217 atomic_read(&adapter->quiescent)); 2218 len += sprintf(page+len, "has_cluster = %d\n", 2219 adapter->has_cluster); 2220 2221 len += sprintf(page+len, "\nModule Parameters:\n"); 2222 len += sprintf(page+len, "max_cmd_per_lun = %d\n", 2223 max_cmd_per_lun); 2224 len += sprintf(page+len, "max_sectors_per_io = %d\n", 2225 max_sectors_per_io); 2226 2227 *eof = 1; 2228 2229 return len; 2230 } 2231 2232 2233 2234 /** 2235 * proc_read_stat() 2236 * @page - buffer to write the data in 2237 * @start - where the actual data has been written in page 2238 * @offset - same meaning as the read system call 2239 * @count - same meaning as the read system call 2240 * @eof - set if no more data needs to be returned 2241 * @data - pointer to our soft state 2242 * 2243 * Diaplay statistical information about the I/O activity. 2244 */ 2245 static int 2246 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof, 2247 void *data) 2248 { 2249 adapter_t *adapter; 2250 int len; 2251 int i; 2252 2253 i = 0; /* avoid compilation warnings */ 2254 len = 0; 2255 adapter = (adapter_t *)data; 2256 2257 len = sprintf(page, "Statistical Information for this controller\n"); 2258 len += sprintf(page+len, "pend_cmds = %d\n", 2259 atomic_read(&adapter->pend_cmds)); 2260 #if MEGA_HAVE_STATS 2261 for(i = 0; i < adapter->numldrv; i++) { 2262 len += sprintf(page+len, "Logical Drive %d:\n", i); 2263 2264 len += sprintf(page+len, 2265 "\tReads Issued = %lu, Writes Issued = %lu\n", 2266 adapter->nreads[i], adapter->nwrites[i]); 2267 2268 len += sprintf(page+len, 2269 "\tSectors Read = %lu, Sectors Written = %lu\n", 2270 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2271 2272 len += sprintf(page+len, 2273 "\tRead errors = %lu, Write errors = %lu\n\n", 2274 adapter->rd_errors[i], adapter->wr_errors[i]); 2275 } 2276 #else 2277 len += sprintf(page+len, 2278 "IO and error counters not compiled in driver.\n"); 2279 #endif 2280 2281 *eof = 1; 2282 2283 return len; 2284 } 2285 2286 2287 /** 2288 * proc_read_mbox() 2289 * @page - buffer to write the data in 2290 * @start - where the actual data has been written in page 2291 * @offset - same meaning as the read system call 2292 * @count - same meaning as the read system call 2293 * @eof - set if no more data needs to be returned 2294 * @data - pointer to our soft state 2295 * 2296 * Display mailbox information for the last command issued. This information 2297 * is good for debugging. 2298 */ 2299 static int 2300 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof, 2301 void *data) 2302 { 2303 2304 adapter_t *adapter = (adapter_t *)data; 2305 volatile mbox_t *mbox = adapter->mbox; 2306 int len = 0; 2307 2308 len = sprintf(page, "Contents of Mail Box Structure\n"); 2309 len += sprintf(page+len, " Fw Command = 0x%02x\n", 2310 mbox->m_out.cmd); 2311 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n", 2312 mbox->m_out.cmdid); 2313 len += sprintf(page+len, " No of Sectors= %04d\n", 2314 mbox->m_out.numsectors); 2315 len += sprintf(page+len, " LBA = 0x%02x\n", 2316 mbox->m_out.lba); 2317 len += sprintf(page+len, " DTA = 0x%08x\n", 2318 mbox->m_out.xferaddr); 2319 len += sprintf(page+len, " Logical Drive= 0x%02x\n", 2320 mbox->m_out.logdrv); 2321 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n", 2322 mbox->m_out.numsgelements); 2323 len += sprintf(page+len, " Busy = %01x\n", 2324 mbox->m_in.busy); 2325 len += sprintf(page+len, " Status = 0x%02x\n", 2326 mbox->m_in.status); 2327 2328 *eof = 1; 2329 2330 return len; 2331 } 2332 2333 2334 /** 2335 * proc_rebuild_rate() 2336 * @page - buffer to write the data in 2337 * @start - where the actual data has been written in page 2338 * @offset - same meaning as the read system call 2339 * @count - same meaning as the read system call 2340 * @eof - set if no more data needs to be returned 2341 * @data - pointer to our soft state 2342 * 2343 * Display current rebuild rate 2344 */ 2345 static int 2346 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof, 2347 void *data) 2348 { 2349 adapter_t *adapter = (adapter_t *)data; 2350 dma_addr_t dma_handle; 2351 caddr_t inquiry; 2352 struct pci_dev *pdev; 2353 int len = 0; 2354 2355 if( make_local_pdev(adapter, &pdev) != 0 ) { 2356 *eof = 1; 2357 return len; 2358 } 2359 2360 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2361 free_local_pdev(pdev); 2362 *eof = 1; 2363 return len; 2364 } 2365 2366 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2367 2368 len = sprintf(page, "Adapter inquiry failed.\n"); 2369 2370 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2371 2372 mega_free_inquiry(inquiry, dma_handle, pdev); 2373 2374 free_local_pdev(pdev); 2375 2376 *eof = 1; 2377 2378 return len; 2379 } 2380 2381 if( adapter->flag & BOARD_40LD ) { 2382 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2383 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2384 } 2385 else { 2386 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2387 ((mraid_ext_inquiry *) 2388 inquiry)->raid_inq.adapter_info.rebuild_rate); 2389 } 2390 2391 2392 mega_free_inquiry(inquiry, dma_handle, pdev); 2393 2394 free_local_pdev(pdev); 2395 2396 *eof = 1; 2397 2398 return len; 2399 } 2400 2401 2402 /** 2403 * proc_battery() 2404 * @page - buffer to write the data in 2405 * @start - where the actual data has been written in page 2406 * @offset - same meaning as the read system call 2407 * @count - same meaning as the read system call 2408 * @eof - set if no more data needs to be returned 2409 * @data - pointer to our soft state 2410 * 2411 * Display information about the battery module on the controller. 2412 */ 2413 static int 2414 proc_battery(char *page, char **start, off_t offset, int count, int *eof, 2415 void *data) 2416 { 2417 adapter_t *adapter = (adapter_t *)data; 2418 dma_addr_t dma_handle; 2419 caddr_t inquiry; 2420 struct pci_dev *pdev; 2421 u8 battery_status = 0; 2422 char str[256]; 2423 int len = 0; 2424 2425 if( make_local_pdev(adapter, &pdev) != 0 ) { 2426 *eof = 1; 2427 return len; 2428 } 2429 2430 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2431 free_local_pdev(pdev); 2432 *eof = 1; 2433 return len; 2434 } 2435 2436 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2437 2438 len = sprintf(page, "Adapter inquiry failed.\n"); 2439 2440 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2441 2442 mega_free_inquiry(inquiry, dma_handle, pdev); 2443 2444 free_local_pdev(pdev); 2445 2446 *eof = 1; 2447 2448 return len; 2449 } 2450 2451 if( adapter->flag & BOARD_40LD ) { 2452 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2453 } 2454 else { 2455 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2456 raid_inq.adapter_info.battery_status; 2457 } 2458 2459 /* 2460 * Decode the battery status 2461 */ 2462 sprintf(str, "Battery Status:[%d]", battery_status); 2463 2464 if(battery_status == MEGA_BATT_CHARGE_DONE) 2465 strcat(str, " Charge Done"); 2466 2467 if(battery_status & MEGA_BATT_MODULE_MISSING) 2468 strcat(str, " Module Missing"); 2469 2470 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2471 strcat(str, " Low Voltage"); 2472 2473 if(battery_status & MEGA_BATT_TEMP_HIGH) 2474 strcat(str, " Temperature High"); 2475 2476 if(battery_status & MEGA_BATT_PACK_MISSING) 2477 strcat(str, " Pack Missing"); 2478 2479 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2480 strcat(str, " Charge In-progress"); 2481 2482 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2483 strcat(str, " Charge Fail"); 2484 2485 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2486 strcat(str, " Cycles Exceeded"); 2487 2488 len = sprintf(page, "%s\n", str); 2489 2490 2491 mega_free_inquiry(inquiry, dma_handle, pdev); 2492 2493 free_local_pdev(pdev); 2494 2495 *eof = 1; 2496 2497 return len; 2498 } 2499 2500 2501 /** 2502 * proc_pdrv_ch0() 2503 * @page - buffer to write the data in 2504 * @start - where the actual data has been written in page 2505 * @offset - same meaning as the read system call 2506 * @count - same meaning as the read system call 2507 * @eof - set if no more data needs to be returned 2508 * @data - pointer to our soft state 2509 * 2510 * Display information about the physical drives on physical channel 0. 2511 */ 2512 static int 2513 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof, 2514 void *data) 2515 { 2516 adapter_t *adapter = (adapter_t *)data; 2517 2518 *eof = 1; 2519 2520 return (proc_pdrv(adapter, page, 0)); 2521 } 2522 2523 2524 /** 2525 * proc_pdrv_ch1() 2526 * @page - buffer to write the data in 2527 * @start - where the actual data has been written in page 2528 * @offset - same meaning as the read system call 2529 * @count - same meaning as the read system call 2530 * @eof - set if no more data needs to be returned 2531 * @data - pointer to our soft state 2532 * 2533 * Display information about the physical drives on physical channel 1. 2534 */ 2535 static int 2536 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof, 2537 void *data) 2538 { 2539 adapter_t *adapter = (adapter_t *)data; 2540 2541 *eof = 1; 2542 2543 return (proc_pdrv(adapter, page, 1)); 2544 } 2545 2546 2547 /** 2548 * proc_pdrv_ch2() 2549 * @page - buffer to write the data in 2550 * @start - where the actual data has been written in page 2551 * @offset - same meaning as the read system call 2552 * @count - same meaning as the read system call 2553 * @eof - set if no more data needs to be returned 2554 * @data - pointer to our soft state 2555 * 2556 * Display information about the physical drives on physical channel 2. 2557 */ 2558 static int 2559 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof, 2560 void *data) 2561 { 2562 adapter_t *adapter = (adapter_t *)data; 2563 2564 *eof = 1; 2565 2566 return (proc_pdrv(adapter, page, 2)); 2567 } 2568 2569 2570 /** 2571 * proc_pdrv_ch3() 2572 * @page - buffer to write the data in 2573 * @start - where the actual data has been written in page 2574 * @offset - same meaning as the read system call 2575 * @count - same meaning as the read system call 2576 * @eof - set if no more data needs to be returned 2577 * @data - pointer to our soft state 2578 * 2579 * Display information about the physical drives on physical channel 3. 2580 */ 2581 static int 2582 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof, 2583 void *data) 2584 { 2585 adapter_t *adapter = (adapter_t *)data; 2586 2587 *eof = 1; 2588 2589 return (proc_pdrv(adapter, page, 3)); 2590 } 2591 2592 2593 /** 2594 * proc_pdrv() 2595 * @page - buffer to write the data in 2596 * @adapter - pointer to our soft state 2597 * 2598 * Display information about the physical drives. 2599 */ 2600 static int 2601 proc_pdrv(adapter_t *adapter, char *page, int channel) 2602 { 2603 dma_addr_t dma_handle; 2604 char *scsi_inq; 2605 dma_addr_t scsi_inq_dma_handle; 2606 caddr_t inquiry; 2607 struct pci_dev *pdev; 2608 u8 *pdrv_state; 2609 u8 state; 2610 int tgt; 2611 int max_channels; 2612 int len = 0; 2613 char str[80]; 2614 int i; 2615 2616 if( make_local_pdev(adapter, &pdev) != 0 ) { 2617 return len; 2618 } 2619 2620 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2621 goto free_pdev; 2622 } 2623 2624 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2625 len = sprintf(page, "Adapter inquiry failed.\n"); 2626 2627 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2628 2629 goto free_inquiry; 2630 } 2631 2632 2633 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2634 2635 if( scsi_inq == NULL ) { 2636 len = sprintf(page, "memory not available for scsi inq.\n"); 2637 2638 goto free_inquiry; 2639 } 2640 2641 if( adapter->flag & BOARD_40LD ) { 2642 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2643 } 2644 else { 2645 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2646 raid_inq.pdrv_info.pdrv_state; 2647 } 2648 2649 max_channels = adapter->product_info.nchannels; 2650 2651 if( channel >= max_channels ) { 2652 goto free_pci; 2653 } 2654 2655 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2656 2657 i = channel*16 + tgt; 2658 2659 state = *(pdrv_state + i); 2660 2661 switch( state & 0x0F ) { 2662 2663 case PDRV_ONLINE: 2664 sprintf(str, 2665 "Channel:%2d Id:%2d State: Online", 2666 channel, tgt); 2667 break; 2668 2669 case PDRV_FAILED: 2670 sprintf(str, 2671 "Channel:%2d Id:%2d State: Failed", 2672 channel, tgt); 2673 break; 2674 2675 case PDRV_RBLD: 2676 sprintf(str, 2677 "Channel:%2d Id:%2d State: Rebuild", 2678 channel, tgt); 2679 break; 2680 2681 case PDRV_HOTSPARE: 2682 sprintf(str, 2683 "Channel:%2d Id:%2d State: Hot spare", 2684 channel, tgt); 2685 break; 2686 2687 default: 2688 sprintf(str, 2689 "Channel:%2d Id:%2d State: Un-configured", 2690 channel, tgt); 2691 break; 2692 2693 } 2694 2695 /* 2696 * This interface displays inquiries for disk drives 2697 * only. Inquries for logical drives and non-disk 2698 * devices are available through /proc/scsi/scsi 2699 */ 2700 memset(scsi_inq, 0, 256); 2701 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2702 scsi_inq_dma_handle) || 2703 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2704 continue; 2705 } 2706 2707 /* 2708 * Check for overflow. We print less than 240 2709 * characters for inquiry 2710 */ 2711 if( (len + 240) >= PAGE_SIZE ) break; 2712 2713 len += sprintf(page+len, "%s.\n", str); 2714 2715 len += mega_print_inquiry(page+len, scsi_inq); 2716 } 2717 2718 free_pci: 2719 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2720 free_inquiry: 2721 mega_free_inquiry(inquiry, dma_handle, pdev); 2722 free_pdev: 2723 free_local_pdev(pdev); 2724 2725 return len; 2726 } 2727 2728 2729 /* 2730 * Display scsi inquiry 2731 */ 2732 static int 2733 mega_print_inquiry(char *page, char *scsi_inq) 2734 { 2735 int len = 0; 2736 int i; 2737 2738 len = sprintf(page, " Vendor: "); 2739 for( i = 8; i < 16; i++ ) { 2740 len += sprintf(page+len, "%c", scsi_inq[i]); 2741 } 2742 2743 len += sprintf(page+len, " Model: "); 2744 2745 for( i = 16; i < 32; i++ ) { 2746 len += sprintf(page+len, "%c", scsi_inq[i]); 2747 } 2748 2749 len += sprintf(page+len, " Rev: "); 2750 2751 for( i = 32; i < 36; i++ ) { 2752 len += sprintf(page+len, "%c", scsi_inq[i]); 2753 } 2754 2755 len += sprintf(page+len, "\n"); 2756 2757 i = scsi_inq[0] & 0x1f; 2758 2759 len += sprintf(page+len, " Type: %s ", scsi_device_type(i)); 2760 2761 len += sprintf(page+len, 2762 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07); 2763 2764 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2765 len += sprintf(page+len, " CCS\n"); 2766 else 2767 len += sprintf(page+len, "\n"); 2768 2769 return len; 2770 } 2771 2772 2773 /** 2774 * proc_rdrv_10() 2775 * @page - buffer to write the data in 2776 * @start - where the actual data has been written in page 2777 * @offset - same meaning as the read system call 2778 * @count - same meaning as the read system call 2779 * @eof - set if no more data needs to be returned 2780 * @data - pointer to our soft state 2781 * 2782 * Display real time information about the logical drives 0 through 9. 2783 */ 2784 static int 2785 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof, 2786 void *data) 2787 { 2788 adapter_t *adapter = (adapter_t *)data; 2789 2790 *eof = 1; 2791 2792 return (proc_rdrv(adapter, page, 0, 9)); 2793 } 2794 2795 2796 /** 2797 * proc_rdrv_20() 2798 * @page - buffer to write the data in 2799 * @start - where the actual data has been written in page 2800 * @offset - same meaning as the read system call 2801 * @count - same meaning as the read system call 2802 * @eof - set if no more data needs to be returned 2803 * @data - pointer to our soft state 2804 * 2805 * Display real time information about the logical drives 0 through 9. 2806 */ 2807 static int 2808 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof, 2809 void *data) 2810 { 2811 adapter_t *adapter = (adapter_t *)data; 2812 2813 *eof = 1; 2814 2815 return (proc_rdrv(adapter, page, 10, 19)); 2816 } 2817 2818 2819 /** 2820 * proc_rdrv_30() 2821 * @page - buffer to write the data in 2822 * @start - where the actual data has been written in page 2823 * @offset - same meaning as the read system call 2824 * @count - same meaning as the read system call 2825 * @eof - set if no more data needs to be returned 2826 * @data - pointer to our soft state 2827 * 2828 * Display real time information about the logical drives 0 through 9. 2829 */ 2830 static int 2831 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof, 2832 void *data) 2833 { 2834 adapter_t *adapter = (adapter_t *)data; 2835 2836 *eof = 1; 2837 2838 return (proc_rdrv(adapter, page, 20, 29)); 2839 } 2840 2841 2842 /** 2843 * proc_rdrv_40() 2844 * @page - buffer to write the data in 2845 * @start - where the actual data has been written in page 2846 * @offset - same meaning as the read system call 2847 * @count - same meaning as the read system call 2848 * @eof - set if no more data needs to be returned 2849 * @data - pointer to our soft state 2850 * 2851 * Display real time information about the logical drives 0 through 9. 2852 */ 2853 static int 2854 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof, 2855 void *data) 2856 { 2857 adapter_t *adapter = (adapter_t *)data; 2858 2859 *eof = 1; 2860 2861 return (proc_rdrv(adapter, page, 30, 39)); 2862 } 2863 2864 2865 /** 2866 * proc_rdrv() 2867 * @page - buffer to write the data in 2868 * @adapter - pointer to our soft state 2869 * @start - starting logical drive to display 2870 * @end - ending logical drive to display 2871 * 2872 * We do not print the inquiry information since its already available through 2873 * /proc/scsi/scsi interface 2874 */ 2875 static int 2876 proc_rdrv(adapter_t *adapter, char *page, int start, int end ) 2877 { 2878 dma_addr_t dma_handle; 2879 logdrv_param *lparam; 2880 megacmd_t mc; 2881 char *disk_array; 2882 dma_addr_t disk_array_dma_handle; 2883 caddr_t inquiry; 2884 struct pci_dev *pdev; 2885 u8 *rdrv_state; 2886 int num_ldrv; 2887 u32 array_sz; 2888 int len = 0; 2889 int i; 2890 2891 if( make_local_pdev(adapter, &pdev) != 0 ) { 2892 return len; 2893 } 2894 2895 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2896 free_local_pdev(pdev); 2897 return len; 2898 } 2899 2900 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2901 2902 len = sprintf(page, "Adapter inquiry failed.\n"); 2903 2904 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2905 2906 mega_free_inquiry(inquiry, dma_handle, pdev); 2907 2908 free_local_pdev(pdev); 2909 2910 return len; 2911 } 2912 2913 memset(&mc, 0, sizeof(megacmd_t)); 2914 2915 if( adapter->flag & BOARD_40LD ) { 2916 array_sz = sizeof(disk_array_40ld); 2917 2918 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2919 2920 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2921 } 2922 else { 2923 array_sz = sizeof(disk_array_8ld); 2924 2925 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2926 raid_inq.logdrv_info.ldrv_state; 2927 2928 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2929 raid_inq.logdrv_info.num_ldrv; 2930 } 2931 2932 disk_array = pci_alloc_consistent(pdev, array_sz, 2933 &disk_array_dma_handle); 2934 2935 if( disk_array == NULL ) { 2936 len = sprintf(page, "memory not available.\n"); 2937 2938 mega_free_inquiry(inquiry, dma_handle, pdev); 2939 2940 free_local_pdev(pdev); 2941 2942 return len; 2943 } 2944 2945 mc.xferaddr = (u32)disk_array_dma_handle; 2946 2947 if( adapter->flag & BOARD_40LD ) { 2948 mc.cmd = FC_NEW_CONFIG; 2949 mc.opcode = OP_DCMD_READ_CONFIG; 2950 2951 if( mega_internal_command(adapter, &mc, NULL) ) { 2952 2953 len = sprintf(page, "40LD read config failed.\n"); 2954 2955 mega_free_inquiry(inquiry, dma_handle, pdev); 2956 2957 pci_free_consistent(pdev, array_sz, disk_array, 2958 disk_array_dma_handle); 2959 2960 free_local_pdev(pdev); 2961 2962 return len; 2963 } 2964 2965 } 2966 else { 2967 mc.cmd = NEW_READ_CONFIG_8LD; 2968 2969 if( mega_internal_command(adapter, &mc, NULL) ) { 2970 2971 mc.cmd = READ_CONFIG_8LD; 2972 2973 if( mega_internal_command(adapter, &mc, 2974 NULL) ){ 2975 2976 len = sprintf(page, 2977 "8LD read config failed.\n"); 2978 2979 mega_free_inquiry(inquiry, dma_handle, pdev); 2980 2981 pci_free_consistent(pdev, array_sz, 2982 disk_array, 2983 disk_array_dma_handle); 2984 2985 free_local_pdev(pdev); 2986 2987 return len; 2988 } 2989 } 2990 } 2991 2992 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 2993 2994 if( adapter->flag & BOARD_40LD ) { 2995 lparam = 2996 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 2997 } 2998 else { 2999 lparam = 3000 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 3001 } 3002 3003 /* 3004 * Check for overflow. We print less than 240 characters for 3005 * information about each logical drive. 3006 */ 3007 if( (len + 240) >= PAGE_SIZE ) break; 3008 3009 len += sprintf(page+len, "Logical drive:%2d:, ", i); 3010 3011 switch( rdrv_state[i] & 0x0F ) { 3012 case RDRV_OFFLINE: 3013 len += sprintf(page+len, "state: offline"); 3014 break; 3015 3016 case RDRV_DEGRADED: 3017 len += sprintf(page+len, "state: degraded"); 3018 break; 3019 3020 case RDRV_OPTIMAL: 3021 len += sprintf(page+len, "state: optimal"); 3022 break; 3023 3024 case RDRV_DELETED: 3025 len += sprintf(page+len, "state: deleted"); 3026 break; 3027 3028 default: 3029 len += sprintf(page+len, "state: unknown"); 3030 break; 3031 } 3032 3033 /* 3034 * Check if check consistency or initialization is going on 3035 * for this logical drive. 3036 */ 3037 if( (rdrv_state[i] & 0xF0) == 0x20 ) { 3038 len += sprintf(page+len, 3039 ", check-consistency in progress"); 3040 } 3041 else if( (rdrv_state[i] & 0xF0) == 0x10 ) { 3042 len += sprintf(page+len, 3043 ", initialization in progress"); 3044 } 3045 3046 len += sprintf(page+len, "\n"); 3047 3048 len += sprintf(page+len, "Span depth:%3d, ", 3049 lparam->span_depth); 3050 3051 len += sprintf(page+len, "RAID level:%3d, ", 3052 lparam->level); 3053 3054 len += sprintf(page+len, "Stripe size:%3d, ", 3055 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 3056 3057 len += sprintf(page+len, "Row size:%3d\n", 3058 lparam->row_size); 3059 3060 3061 len += sprintf(page+len, "Read Policy: "); 3062 3063 switch(lparam->read_ahead) { 3064 3065 case NO_READ_AHEAD: 3066 len += sprintf(page+len, "No read ahead, "); 3067 break; 3068 3069 case READ_AHEAD: 3070 len += sprintf(page+len, "Read ahead, "); 3071 break; 3072 3073 case ADAP_READ_AHEAD: 3074 len += sprintf(page+len, "Adaptive, "); 3075 break; 3076 3077 } 3078 3079 len += sprintf(page+len, "Write Policy: "); 3080 3081 switch(lparam->write_mode) { 3082 3083 case WRMODE_WRITE_THRU: 3084 len += sprintf(page+len, "Write thru, "); 3085 break; 3086 3087 case WRMODE_WRITE_BACK: 3088 len += sprintf(page+len, "Write back, "); 3089 break; 3090 } 3091 3092 len += sprintf(page+len, "Cache Policy: "); 3093 3094 switch(lparam->direct_io) { 3095 3096 case CACHED_IO: 3097 len += sprintf(page+len, "Cached IO\n\n"); 3098 break; 3099 3100 case DIRECT_IO: 3101 len += sprintf(page+len, "Direct IO\n\n"); 3102 break; 3103 } 3104 } 3105 3106 mega_free_inquiry(inquiry, dma_handle, pdev); 3107 3108 pci_free_consistent(pdev, array_sz, disk_array, 3109 disk_array_dma_handle); 3110 3111 free_local_pdev(pdev); 3112 3113 return len; 3114 } 3115 #else 3116 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 3117 { 3118 } 3119 #endif 3120 3121 3122 /** 3123 * megaraid_biosparam() 3124 * 3125 * Return the disk geometry for a particular disk 3126 */ 3127 static int 3128 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 3129 sector_t capacity, int geom[]) 3130 { 3131 adapter_t *adapter; 3132 unsigned char *bh; 3133 int heads; 3134 int sectors; 3135 int cylinders; 3136 int rval; 3137 3138 /* Get pointer to host config structure */ 3139 adapter = (adapter_t *)sdev->host->hostdata; 3140 3141 if (IS_RAID_CH(adapter, sdev->channel)) { 3142 /* Default heads (64) & sectors (32) */ 3143 heads = 64; 3144 sectors = 32; 3145 cylinders = (ulong)capacity / (heads * sectors); 3146 3147 /* 3148 * Handle extended translation size for logical drives 3149 * > 1Gb 3150 */ 3151 if ((ulong)capacity >= 0x200000) { 3152 heads = 255; 3153 sectors = 63; 3154 cylinders = (ulong)capacity / (heads * sectors); 3155 } 3156 3157 /* return result */ 3158 geom[0] = heads; 3159 geom[1] = sectors; 3160 geom[2] = cylinders; 3161 } 3162 else { 3163 bh = scsi_bios_ptable(bdev); 3164 3165 if( bh ) { 3166 rval = scsi_partsize(bh, capacity, 3167 &geom[2], &geom[0], &geom[1]); 3168 kfree(bh); 3169 if( rval != -1 ) 3170 return rval; 3171 } 3172 3173 printk(KERN_INFO 3174 "megaraid: invalid partition on this disk on channel %d\n", 3175 sdev->channel); 3176 3177 /* Default heads (64) & sectors (32) */ 3178 heads = 64; 3179 sectors = 32; 3180 cylinders = (ulong)capacity / (heads * sectors); 3181 3182 /* Handle extended translation size for logical drives > 1Gb */ 3183 if ((ulong)capacity >= 0x200000) { 3184 heads = 255; 3185 sectors = 63; 3186 cylinders = (ulong)capacity / (heads * sectors); 3187 } 3188 3189 /* return result */ 3190 geom[0] = heads; 3191 geom[1] = sectors; 3192 geom[2] = cylinders; 3193 } 3194 3195 return 0; 3196 } 3197 3198 /** 3199 * mega_init_scb() 3200 * @adapter - pointer to our soft state 3201 * 3202 * Allocate memory for the various pointers in the scb structures: 3203 * scatter-gather list pointer, passthru and extended passthru structure 3204 * pointers. 3205 */ 3206 static int 3207 mega_init_scb(adapter_t *adapter) 3208 { 3209 scb_t *scb; 3210 int i; 3211 3212 for( i = 0; i < adapter->max_cmds; i++ ) { 3213 3214 scb = &adapter->scb_list[i]; 3215 3216 scb->sgl64 = NULL; 3217 scb->sgl = NULL; 3218 scb->pthru = NULL; 3219 scb->epthru = NULL; 3220 } 3221 3222 for( i = 0; i < adapter->max_cmds; i++ ) { 3223 3224 scb = &adapter->scb_list[i]; 3225 3226 scb->idx = i; 3227 3228 scb->sgl64 = pci_alloc_consistent(adapter->dev, 3229 sizeof(mega_sgl64) * adapter->sglen, 3230 &scb->sgl_dma_addr); 3231 3232 scb->sgl = (mega_sglist *)scb->sgl64; 3233 3234 if( !scb->sgl ) { 3235 printk(KERN_WARNING "RAID: Can't allocate sglist.\n"); 3236 mega_free_sgl(adapter); 3237 return -1; 3238 } 3239 3240 scb->pthru = pci_alloc_consistent(adapter->dev, 3241 sizeof(mega_passthru), 3242 &scb->pthru_dma_addr); 3243 3244 if( !scb->pthru ) { 3245 printk(KERN_WARNING "RAID: Can't allocate passthru.\n"); 3246 mega_free_sgl(adapter); 3247 return -1; 3248 } 3249 3250 scb->epthru = pci_alloc_consistent(adapter->dev, 3251 sizeof(mega_ext_passthru), 3252 &scb->epthru_dma_addr); 3253 3254 if( !scb->epthru ) { 3255 printk(KERN_WARNING 3256 "Can't allocate extended passthru.\n"); 3257 mega_free_sgl(adapter); 3258 return -1; 3259 } 3260 3261 3262 scb->dma_type = MEGA_DMA_TYPE_NONE; 3263 3264 /* 3265 * Link to free list 3266 * lock not required since we are loading the driver, so no 3267 * commands possible right now. 3268 */ 3269 scb->state = SCB_FREE; 3270 scb->cmd = NULL; 3271 list_add(&scb->list, &adapter->free_list); 3272 } 3273 3274 return 0; 3275 } 3276 3277 3278 /** 3279 * megadev_open() 3280 * @inode - unused 3281 * @filep - unused 3282 * 3283 * Routines for the character/ioctl interface to the driver. Find out if this 3284 * is a valid open. 3285 */ 3286 static int 3287 megadev_open (struct inode *inode, struct file *filep) 3288 { 3289 /* 3290 * Only allow superuser to access private ioctl interface 3291 */ 3292 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 3293 3294 return 0; 3295 } 3296 3297 3298 /** 3299 * megadev_ioctl() 3300 * @inode - Our device inode 3301 * @filep - unused 3302 * @cmd - ioctl command 3303 * @arg - user buffer 3304 * 3305 * ioctl entry point for our private ioctl interface. We move the data in from 3306 * the user space, prepare the command (if necessary, convert the old MIMD 3307 * ioctl to new ioctl command), and issue a synchronous command to the 3308 * controller. 3309 */ 3310 static int 3311 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3312 { 3313 adapter_t *adapter; 3314 nitioctl_t uioc; 3315 int adapno; 3316 int rval; 3317 mega_passthru __user *upthru; /* user address for passthru */ 3318 mega_passthru *pthru; /* copy user passthru here */ 3319 dma_addr_t pthru_dma_hndl; 3320 void *data = NULL; /* data to be transferred */ 3321 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 3322 megacmd_t mc; 3323 megastat_t __user *ustats; 3324 int num_ldrv; 3325 u32 uxferaddr = 0; 3326 struct pci_dev *pdev; 3327 3328 ustats = NULL; /* avoid compilation warnings */ 3329 num_ldrv = 0; 3330 3331 /* 3332 * Make sure only USCSICMD are issued through this interface. 3333 * MIMD application would still fire different command. 3334 */ 3335 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 3336 return -EINVAL; 3337 } 3338 3339 /* 3340 * Check and convert a possible MIMD command to NIT command. 3341 * mega_m_to_n() copies the data from the user space, so we do not 3342 * have to do it here. 3343 * NOTE: We will need some user address to copyout the data, therefore 3344 * the inteface layer will also provide us with the required user 3345 * addresses. 3346 */ 3347 memset(&uioc, 0, sizeof(nitioctl_t)); 3348 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3349 return rval; 3350 3351 3352 switch( uioc.opcode ) { 3353 3354 case GET_DRIVER_VER: 3355 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3356 return (-EFAULT); 3357 3358 break; 3359 3360 case GET_N_ADAP: 3361 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3362 return (-EFAULT); 3363 3364 /* 3365 * Shucks. MIMD interface returns a positive value for number 3366 * of adapters. TODO: Change it to return 0 when there is no 3367 * applicatio using mimd interface. 3368 */ 3369 return hba_count; 3370 3371 case GET_ADAP_INFO: 3372 3373 /* 3374 * Which adapter 3375 */ 3376 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3377 return (-ENODEV); 3378 3379 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3380 sizeof(struct mcontroller)) ) 3381 return (-EFAULT); 3382 break; 3383 3384 #if MEGA_HAVE_STATS 3385 3386 case GET_STATS: 3387 /* 3388 * Which adapter 3389 */ 3390 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3391 return (-ENODEV); 3392 3393 adapter = hba_soft_state[adapno]; 3394 3395 ustats = uioc.uioc_uaddr; 3396 3397 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3398 return (-EFAULT); 3399 3400 /* 3401 * Check for the validity of the logical drive number 3402 */ 3403 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3404 3405 if( copy_to_user(ustats->nreads, adapter->nreads, 3406 num_ldrv*sizeof(u32)) ) 3407 return -EFAULT; 3408 3409 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3410 num_ldrv*sizeof(u32)) ) 3411 return -EFAULT; 3412 3413 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3414 num_ldrv*sizeof(u32)) ) 3415 return -EFAULT; 3416 3417 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3418 num_ldrv*sizeof(u32)) ) 3419 return -EFAULT; 3420 3421 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3422 num_ldrv*sizeof(u32)) ) 3423 return -EFAULT; 3424 3425 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3426 num_ldrv*sizeof(u32)) ) 3427 return -EFAULT; 3428 3429 return 0; 3430 3431 #endif 3432 case MBOX_CMD: 3433 3434 /* 3435 * Which adapter 3436 */ 3437 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3438 return (-ENODEV); 3439 3440 adapter = hba_soft_state[adapno]; 3441 3442 /* 3443 * Deletion of logical drive is a special case. The adapter 3444 * should be quiescent before this command is issued. 3445 */ 3446 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3447 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3448 3449 /* 3450 * Do we support this feature 3451 */ 3452 if( !adapter->support_random_del ) { 3453 printk(KERN_WARNING "megaraid: logdrv "); 3454 printk("delete on non-supporting F/W.\n"); 3455 3456 return (-EINVAL); 3457 } 3458 3459 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3460 3461 if( rval == 0 ) { 3462 memset(&mc, 0, sizeof(megacmd_t)); 3463 3464 mc.status = rval; 3465 3466 rval = mega_n_to_m((void __user *)arg, &mc); 3467 } 3468 3469 return rval; 3470 } 3471 /* 3472 * This interface only support the regular passthru commands. 3473 * Reject extended passthru and 64-bit passthru 3474 */ 3475 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3476 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3477 3478 printk(KERN_WARNING "megaraid: rejected passthru.\n"); 3479 3480 return (-EINVAL); 3481 } 3482 3483 /* 3484 * For all internal commands, the buffer must be allocated in 3485 * <4GB address range 3486 */ 3487 if( make_local_pdev(adapter, &pdev) != 0 ) 3488 return -EIO; 3489 3490 /* Is it a passthru command or a DCMD */ 3491 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3492 /* Passthru commands */ 3493 3494 pthru = pci_alloc_consistent(pdev, 3495 sizeof(mega_passthru), 3496 &pthru_dma_hndl); 3497 3498 if( pthru == NULL ) { 3499 free_local_pdev(pdev); 3500 return (-ENOMEM); 3501 } 3502 3503 /* 3504 * The user passthru structure 3505 */ 3506 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; 3507 3508 /* 3509 * Copy in the user passthru here. 3510 */ 3511 if( copy_from_user(pthru, upthru, 3512 sizeof(mega_passthru)) ) { 3513 3514 pci_free_consistent(pdev, 3515 sizeof(mega_passthru), pthru, 3516 pthru_dma_hndl); 3517 3518 free_local_pdev(pdev); 3519 3520 return (-EFAULT); 3521 } 3522 3523 /* 3524 * Is there a data transfer 3525 */ 3526 if( pthru->dataxferlen ) { 3527 data = pci_alloc_consistent(pdev, 3528 pthru->dataxferlen, 3529 &data_dma_hndl); 3530 3531 if( data == NULL ) { 3532 pci_free_consistent(pdev, 3533 sizeof(mega_passthru), 3534 pthru, 3535 pthru_dma_hndl); 3536 3537 free_local_pdev(pdev); 3538 3539 return (-ENOMEM); 3540 } 3541 3542 /* 3543 * Save the user address and point the kernel 3544 * address at just allocated memory 3545 */ 3546 uxferaddr = pthru->dataxferaddr; 3547 pthru->dataxferaddr = data_dma_hndl; 3548 } 3549 3550 3551 /* 3552 * Is data coming down-stream 3553 */ 3554 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3555 /* 3556 * Get the user data 3557 */ 3558 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3559 pthru->dataxferlen) ) { 3560 rval = (-EFAULT); 3561 goto freemem_and_return; 3562 } 3563 } 3564 3565 memset(&mc, 0, sizeof(megacmd_t)); 3566 3567 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3568 mc.xferaddr = (u32)pthru_dma_hndl; 3569 3570 /* 3571 * Issue the command 3572 */ 3573 mega_internal_command(adapter, &mc, pthru); 3574 3575 rval = mega_n_to_m((void __user *)arg, &mc); 3576 3577 if( rval ) goto freemem_and_return; 3578 3579 3580 /* 3581 * Is data going up-stream 3582 */ 3583 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3584 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3585 pthru->dataxferlen) ) { 3586 rval = (-EFAULT); 3587 } 3588 } 3589 3590 /* 3591 * Send the request sense data also, irrespective of 3592 * whether the user has asked for it or not. 3593 */ 3594 if (copy_to_user(upthru->reqsensearea, 3595 pthru->reqsensearea, 14)) 3596 rval = -EFAULT; 3597 3598 freemem_and_return: 3599 if( pthru->dataxferlen ) { 3600 pci_free_consistent(pdev, 3601 pthru->dataxferlen, data, 3602 data_dma_hndl); 3603 } 3604 3605 pci_free_consistent(pdev, sizeof(mega_passthru), 3606 pthru, pthru_dma_hndl); 3607 3608 free_local_pdev(pdev); 3609 3610 return rval; 3611 } 3612 else { 3613 /* DCMD commands */ 3614 3615 /* 3616 * Is there a data transfer 3617 */ 3618 if( uioc.xferlen ) { 3619 data = pci_alloc_consistent(pdev, 3620 uioc.xferlen, &data_dma_hndl); 3621 3622 if( data == NULL ) { 3623 free_local_pdev(pdev); 3624 return (-ENOMEM); 3625 } 3626 3627 uxferaddr = MBOX(uioc)->xferaddr; 3628 } 3629 3630 /* 3631 * Is data coming down-stream 3632 */ 3633 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3634 /* 3635 * Get the user data 3636 */ 3637 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3638 uioc.xferlen) ) { 3639 3640 pci_free_consistent(pdev, 3641 uioc.xferlen, 3642 data, data_dma_hndl); 3643 3644 free_local_pdev(pdev); 3645 3646 return (-EFAULT); 3647 } 3648 } 3649 3650 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3651 3652 mc.xferaddr = (u32)data_dma_hndl; 3653 3654 /* 3655 * Issue the command 3656 */ 3657 mega_internal_command(adapter, &mc, NULL); 3658 3659 rval = mega_n_to_m((void __user *)arg, &mc); 3660 3661 if( rval ) { 3662 if( uioc.xferlen ) { 3663 pci_free_consistent(pdev, 3664 uioc.xferlen, data, 3665 data_dma_hndl); 3666 } 3667 3668 free_local_pdev(pdev); 3669 3670 return rval; 3671 } 3672 3673 /* 3674 * Is data going up-stream 3675 */ 3676 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3677 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3678 uioc.xferlen) ) { 3679 3680 rval = (-EFAULT); 3681 } 3682 } 3683 3684 if( uioc.xferlen ) { 3685 pci_free_consistent(pdev, 3686 uioc.xferlen, data, 3687 data_dma_hndl); 3688 } 3689 3690 free_local_pdev(pdev); 3691 3692 return rval; 3693 } 3694 3695 default: 3696 return (-EINVAL); 3697 } 3698 3699 return 0; 3700 } 3701 3702 static long 3703 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3704 { 3705 int ret; 3706 3707 mutex_lock(&megadev_mutex); 3708 ret = megadev_ioctl(filep, cmd, arg); 3709 mutex_unlock(&megadev_mutex); 3710 3711 return ret; 3712 } 3713 3714 /** 3715 * mega_m_to_n() 3716 * @arg - user address 3717 * @uioc - new ioctl structure 3718 * 3719 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3720 * structure 3721 * 3722 * Converts the older mimd ioctl structure to newer NIT structure 3723 */ 3724 static int 3725 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3726 { 3727 struct uioctl_t uioc_mimd; 3728 char signature[8] = {0}; 3729 u8 opcode; 3730 u8 subopcode; 3731 3732 3733 /* 3734 * check is the application conforms to NIT. We do not have to do much 3735 * in that case. 3736 * We exploit the fact that the signature is stored in the very 3737 * begining of the structure. 3738 */ 3739 3740 if( copy_from_user(signature, arg, 7) ) 3741 return (-EFAULT); 3742 3743 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3744 3745 /* 3746 * NOTE NOTE: The nit ioctl is still under flux because of 3747 * change of mailbox definition, in HPE. No applications yet 3748 * use this interface and let's not have applications use this 3749 * interface till the new specifitions are in place. 3750 */ 3751 return -EINVAL; 3752 #if 0 3753 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3754 return (-EFAULT); 3755 return 0; 3756 #endif 3757 } 3758 3759 /* 3760 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3761 * 3762 * Get the user ioctl structure 3763 */ 3764 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3765 return (-EFAULT); 3766 3767 3768 /* 3769 * Get the opcode and subopcode for the commands 3770 */ 3771 opcode = uioc_mimd.ui.fcs.opcode; 3772 subopcode = uioc_mimd.ui.fcs.subopcode; 3773 3774 switch (opcode) { 3775 case 0x82: 3776 3777 switch (subopcode) { 3778 3779 case MEGAIOC_QDRVRVER: /* Query driver version */ 3780 uioc->opcode = GET_DRIVER_VER; 3781 uioc->uioc_uaddr = uioc_mimd.data; 3782 break; 3783 3784 case MEGAIOC_QNADAP: /* Get # of adapters */ 3785 uioc->opcode = GET_N_ADAP; 3786 uioc->uioc_uaddr = uioc_mimd.data; 3787 break; 3788 3789 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3790 uioc->opcode = GET_ADAP_INFO; 3791 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3792 uioc->uioc_uaddr = uioc_mimd.data; 3793 break; 3794 3795 default: 3796 return(-EINVAL); 3797 } 3798 3799 break; 3800 3801 3802 case 0x81: 3803 3804 uioc->opcode = MBOX_CMD; 3805 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3806 3807 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3808 3809 uioc->xferlen = uioc_mimd.ui.fcs.length; 3810 3811 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3812 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3813 3814 break; 3815 3816 case 0x80: 3817 3818 uioc->opcode = MBOX_CMD; 3819 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3820 3821 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3822 3823 /* 3824 * Choose the xferlen bigger of input and output data 3825 */ 3826 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3827 uioc_mimd.outlen : uioc_mimd.inlen; 3828 3829 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3830 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3831 3832 break; 3833 3834 default: 3835 return (-EINVAL); 3836 3837 } 3838 3839 return 0; 3840 } 3841 3842 /* 3843 * mega_n_to_m() 3844 * @arg - user address 3845 * @mc - mailbox command 3846 * 3847 * Updates the status information to the application, depending on application 3848 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3849 */ 3850 static int 3851 mega_n_to_m(void __user *arg, megacmd_t *mc) 3852 { 3853 nitioctl_t __user *uiocp; 3854 megacmd_t __user *umc; 3855 mega_passthru __user *upthru; 3856 struct uioctl_t __user *uioc_mimd; 3857 char signature[8] = {0}; 3858 3859 /* 3860 * check is the application conforms to NIT. 3861 */ 3862 if( copy_from_user(signature, arg, 7) ) 3863 return -EFAULT; 3864 3865 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3866 3867 uiocp = arg; 3868 3869 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3870 return (-EFAULT); 3871 3872 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3873 3874 umc = MBOX_P(uiocp); 3875 3876 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3877 return -EFAULT; 3878 3879 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3880 return (-EFAULT); 3881 } 3882 } 3883 else { 3884 uioc_mimd = arg; 3885 3886 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3887 return (-EFAULT); 3888 3889 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3890 3891 umc = (megacmd_t __user *)uioc_mimd->mbox; 3892 3893 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3894 return (-EFAULT); 3895 3896 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3897 return (-EFAULT); 3898 } 3899 } 3900 3901 return 0; 3902 } 3903 3904 3905 /* 3906 * MEGARAID 'FW' commands. 3907 */ 3908 3909 /** 3910 * mega_is_bios_enabled() 3911 * @adapter - pointer to our soft state 3912 * 3913 * issue command to find out if the BIOS is enabled for this controller 3914 */ 3915 static int 3916 mega_is_bios_enabled(adapter_t *adapter) 3917 { 3918 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3919 mbox_t *mbox; 3920 int ret; 3921 3922 mbox = (mbox_t *)raw_mbox; 3923 3924 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3925 3926 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3927 3928 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3929 3930 raw_mbox[0] = IS_BIOS_ENABLED; 3931 raw_mbox[2] = GET_BIOS; 3932 3933 3934 ret = issue_scb_block(adapter, raw_mbox); 3935 3936 return *(char *)adapter->mega_buffer; 3937 } 3938 3939 3940 /** 3941 * mega_enum_raid_scsi() 3942 * @adapter - pointer to our soft state 3943 * 3944 * Find out what channels are RAID/SCSI. This information is used to 3945 * differentiate the virtual channels and physical channels and to support 3946 * ROMB feature and non-disk devices. 3947 */ 3948 static void 3949 mega_enum_raid_scsi(adapter_t *adapter) 3950 { 3951 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3952 mbox_t *mbox; 3953 int i; 3954 3955 mbox = (mbox_t *)raw_mbox; 3956 3957 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3958 3959 /* 3960 * issue command to find out what channels are raid/scsi 3961 */ 3962 raw_mbox[0] = CHNL_CLASS; 3963 raw_mbox[2] = GET_CHNL_CLASS; 3964 3965 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3966 3967 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3968 3969 /* 3970 * Non-ROMB firmware fail this command, so all channels 3971 * must be shown RAID 3972 */ 3973 adapter->mega_ch_class = 0xFF; 3974 3975 if(!issue_scb_block(adapter, raw_mbox)) { 3976 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 3977 3978 } 3979 3980 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3981 if( (adapter->mega_ch_class >> i) & 0x01 ) { 3982 printk(KERN_INFO "megaraid: channel[%d] is raid.\n", 3983 i); 3984 } 3985 else { 3986 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n", 3987 i); 3988 } 3989 } 3990 3991 return; 3992 } 3993 3994 3995 /** 3996 * mega_get_boot_drv() 3997 * @adapter - pointer to our soft state 3998 * 3999 * Find out which device is the boot device. Note, any logical drive or any 4000 * phyical device (e.g., a CDROM) can be designated as a boot device. 4001 */ 4002 static void 4003 mega_get_boot_drv(adapter_t *adapter) 4004 { 4005 struct private_bios_data *prv_bios_data; 4006 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4007 mbox_t *mbox; 4008 u16 cksum = 0; 4009 u8 *cksum_p; 4010 u8 boot_pdrv; 4011 int i; 4012 4013 mbox = (mbox_t *)raw_mbox; 4014 4015 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4016 4017 raw_mbox[0] = BIOS_PVT_DATA; 4018 raw_mbox[2] = GET_BIOS_PVT_DATA; 4019 4020 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4021 4022 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4023 4024 adapter->boot_ldrv_enabled = 0; 4025 adapter->boot_ldrv = 0; 4026 4027 adapter->boot_pdrv_enabled = 0; 4028 adapter->boot_pdrv_ch = 0; 4029 adapter->boot_pdrv_tgt = 0; 4030 4031 if(issue_scb_block(adapter, raw_mbox) == 0) { 4032 prv_bios_data = 4033 (struct private_bios_data *)adapter->mega_buffer; 4034 4035 cksum = 0; 4036 cksum_p = (char *)prv_bios_data; 4037 for (i = 0; i < 14; i++ ) { 4038 cksum += (u16)(*cksum_p++); 4039 } 4040 4041 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 4042 4043 /* 4044 * If MSB is set, a physical drive is set as boot 4045 * device 4046 */ 4047 if( prv_bios_data->boot_drv & 0x80 ) { 4048 adapter->boot_pdrv_enabled = 1; 4049 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 4050 adapter->boot_pdrv_ch = boot_pdrv / 16; 4051 adapter->boot_pdrv_tgt = boot_pdrv % 16; 4052 } 4053 else { 4054 adapter->boot_ldrv_enabled = 1; 4055 adapter->boot_ldrv = prv_bios_data->boot_drv; 4056 } 4057 } 4058 } 4059 4060 } 4061 4062 /** 4063 * mega_support_random_del() 4064 * @adapter - pointer to our soft state 4065 * 4066 * Find out if this controller supports random deletion and addition of 4067 * logical drives 4068 */ 4069 static int 4070 mega_support_random_del(adapter_t *adapter) 4071 { 4072 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4073 mbox_t *mbox; 4074 int rval; 4075 4076 mbox = (mbox_t *)raw_mbox; 4077 4078 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4079 4080 /* 4081 * issue command 4082 */ 4083 raw_mbox[0] = FC_DEL_LOGDRV; 4084 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 4085 4086 rval = issue_scb_block(adapter, raw_mbox); 4087 4088 return !rval; 4089 } 4090 4091 4092 /** 4093 * mega_support_ext_cdb() 4094 * @adapter - pointer to our soft state 4095 * 4096 * Find out if this firmware support cdblen > 10 4097 */ 4098 static int 4099 mega_support_ext_cdb(adapter_t *adapter) 4100 { 4101 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4102 mbox_t *mbox; 4103 int rval; 4104 4105 mbox = (mbox_t *)raw_mbox; 4106 4107 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4108 /* 4109 * issue command to find out if controller supports extended CDBs. 4110 */ 4111 raw_mbox[0] = 0xA4; 4112 raw_mbox[2] = 0x16; 4113 4114 rval = issue_scb_block(adapter, raw_mbox); 4115 4116 return !rval; 4117 } 4118 4119 4120 /** 4121 * mega_del_logdrv() 4122 * @adapter - pointer to our soft state 4123 * @logdrv - logical drive to be deleted 4124 * 4125 * Delete the specified logical drive. It is the responsibility of the user 4126 * app to let the OS know about this operation. 4127 */ 4128 static int 4129 mega_del_logdrv(adapter_t *adapter, int logdrv) 4130 { 4131 unsigned long flags; 4132 scb_t *scb; 4133 int rval; 4134 4135 /* 4136 * Stop sending commands to the controller, queue them internally. 4137 * When deletion is complete, ISR will flush the queue. 4138 */ 4139 atomic_set(&adapter->quiescent, 1); 4140 4141 /* 4142 * Wait till all the issued commands are complete and there are no 4143 * commands in the pending queue 4144 */ 4145 while (atomic_read(&adapter->pend_cmds) > 0 || 4146 !list_empty(&adapter->pending_list)) 4147 msleep(1000); /* sleep for 1s */ 4148 4149 rval = mega_do_del_logdrv(adapter, logdrv); 4150 4151 spin_lock_irqsave(&adapter->lock, flags); 4152 4153 /* 4154 * If delete operation was successful, add 0x80 to the logical drive 4155 * ids for commands in the pending queue. 4156 */ 4157 if (adapter->read_ldidmap) { 4158 struct list_head *pos; 4159 list_for_each(pos, &adapter->pending_list) { 4160 scb = list_entry(pos, scb_t, list); 4161 if (scb->pthru->logdrv < 0x80 ) 4162 scb->pthru->logdrv += 0x80; 4163 } 4164 } 4165 4166 atomic_set(&adapter->quiescent, 0); 4167 4168 mega_runpendq(adapter); 4169 4170 spin_unlock_irqrestore(&adapter->lock, flags); 4171 4172 return rval; 4173 } 4174 4175 4176 static int 4177 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 4178 { 4179 megacmd_t mc; 4180 int rval; 4181 4182 memset( &mc, 0, sizeof(megacmd_t)); 4183 4184 mc.cmd = FC_DEL_LOGDRV; 4185 mc.opcode = OP_DEL_LOGDRV; 4186 mc.subopcode = logdrv; 4187 4188 rval = mega_internal_command(adapter, &mc, NULL); 4189 4190 /* log this event */ 4191 if(rval) { 4192 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv); 4193 return rval; 4194 } 4195 4196 /* 4197 * After deleting first logical drive, the logical drives must be 4198 * addressed by adding 0x80 to the logical drive id. 4199 */ 4200 adapter->read_ldidmap = 1; 4201 4202 return rval; 4203 } 4204 4205 4206 /** 4207 * mega_get_max_sgl() 4208 * @adapter - pointer to our soft state 4209 * 4210 * Find out the maximum number of scatter-gather elements supported by this 4211 * version of the firmware 4212 */ 4213 static void 4214 mega_get_max_sgl(adapter_t *adapter) 4215 { 4216 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4217 mbox_t *mbox; 4218 4219 mbox = (mbox_t *)raw_mbox; 4220 4221 memset(mbox, 0, sizeof(raw_mbox)); 4222 4223 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4224 4225 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4226 4227 raw_mbox[0] = MAIN_MISC_OPCODE; 4228 raw_mbox[2] = GET_MAX_SG_SUPPORT; 4229 4230 4231 if( issue_scb_block(adapter, raw_mbox) ) { 4232 /* 4233 * f/w does not support this command. Choose the default value 4234 */ 4235 adapter->sglen = MIN_SGLIST; 4236 } 4237 else { 4238 adapter->sglen = *((char *)adapter->mega_buffer); 4239 4240 /* 4241 * Make sure this is not more than the resources we are 4242 * planning to allocate 4243 */ 4244 if ( adapter->sglen > MAX_SGLIST ) 4245 adapter->sglen = MAX_SGLIST; 4246 } 4247 4248 return; 4249 } 4250 4251 4252 /** 4253 * mega_support_cluster() 4254 * @adapter - pointer to our soft state 4255 * 4256 * Find out if this firmware support cluster calls. 4257 */ 4258 static int 4259 mega_support_cluster(adapter_t *adapter) 4260 { 4261 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4262 mbox_t *mbox; 4263 4264 mbox = (mbox_t *)raw_mbox; 4265 4266 memset(mbox, 0, sizeof(raw_mbox)); 4267 4268 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4269 4270 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4271 4272 /* 4273 * Try to get the initiator id. This command will succeed iff the 4274 * clustering is available on this HBA. 4275 */ 4276 raw_mbox[0] = MEGA_GET_TARGET_ID; 4277 4278 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 4279 4280 /* 4281 * Cluster support available. Get the initiator target id. 4282 * Tell our id to mid-layer too. 4283 */ 4284 adapter->this_id = *(u32 *)adapter->mega_buffer; 4285 adapter->host->this_id = adapter->this_id; 4286 4287 return 1; 4288 } 4289 4290 return 0; 4291 } 4292 4293 #ifdef CONFIG_PROC_FS 4294 /** 4295 * mega_adapinq() 4296 * @adapter - pointer to our soft state 4297 * @dma_handle - DMA address of the buffer 4298 * 4299 * Issue internal comamnds while interrupts are available. 4300 * We only issue direct mailbox commands from within the driver. ioctl() 4301 * interface using these routines can issue passthru commands. 4302 */ 4303 static int 4304 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 4305 { 4306 megacmd_t mc; 4307 4308 memset(&mc, 0, sizeof(megacmd_t)); 4309 4310 if( adapter->flag & BOARD_40LD ) { 4311 mc.cmd = FC_NEW_CONFIG; 4312 mc.opcode = NC_SUBOP_ENQUIRY3; 4313 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 4314 } 4315 else { 4316 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 4317 } 4318 4319 mc.xferaddr = (u32)dma_handle; 4320 4321 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 4322 return -1; 4323 } 4324 4325 return 0; 4326 } 4327 4328 4329 /** mega_internal_dev_inquiry() 4330 * @adapter - pointer to our soft state 4331 * @ch - channel for this device 4332 * @tgt - ID of this device 4333 * @buf_dma_handle - DMA address of the buffer 4334 * 4335 * Issue the scsi inquiry for the specified device. 4336 */ 4337 static int 4338 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4339 dma_addr_t buf_dma_handle) 4340 { 4341 mega_passthru *pthru; 4342 dma_addr_t pthru_dma_handle; 4343 megacmd_t mc; 4344 int rval; 4345 struct pci_dev *pdev; 4346 4347 4348 /* 4349 * For all internal commands, the buffer must be allocated in <4GB 4350 * address range 4351 */ 4352 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4353 4354 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4355 &pthru_dma_handle); 4356 4357 if( pthru == NULL ) { 4358 free_local_pdev(pdev); 4359 return -1; 4360 } 4361 4362 pthru->timeout = 2; 4363 pthru->ars = 1; 4364 pthru->reqsenselen = 14; 4365 pthru->islogical = 0; 4366 4367 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4368 4369 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4370 4371 pthru->cdblen = 6; 4372 4373 pthru->cdb[0] = INQUIRY; 4374 pthru->cdb[1] = 0; 4375 pthru->cdb[2] = 0; 4376 pthru->cdb[3] = 0; 4377 pthru->cdb[4] = 255; 4378 pthru->cdb[5] = 0; 4379 4380 4381 pthru->dataxferaddr = (u32)buf_dma_handle; 4382 pthru->dataxferlen = 256; 4383 4384 memset(&mc, 0, sizeof(megacmd_t)); 4385 4386 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4387 mc.xferaddr = (u32)pthru_dma_handle; 4388 4389 rval = mega_internal_command(adapter, &mc, pthru); 4390 4391 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4392 pthru_dma_handle); 4393 4394 free_local_pdev(pdev); 4395 4396 return rval; 4397 } 4398 #endif 4399 4400 /** 4401 * mega_internal_command() 4402 * @adapter - pointer to our soft state 4403 * @mc - the mailbox command 4404 * @pthru - Passthru structure for DCDB commands 4405 * 4406 * Issue the internal commands in interrupt mode. 4407 * The last argument is the address of the passthru structure if the command 4408 * to be fired is a passthru command 4409 * 4410 * lockscope specifies whether the caller has already acquired the lock. Of 4411 * course, the caller must know which lock we are talking about. 4412 * 4413 * Note: parameter 'pthru' is null for non-passthru commands. 4414 */ 4415 static int 4416 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4417 { 4418 Scsi_Cmnd *scmd; 4419 struct scsi_device *sdev; 4420 scb_t *scb; 4421 int rval; 4422 4423 scmd = scsi_allocate_command(GFP_KERNEL); 4424 if (!scmd) 4425 return -ENOMEM; 4426 4427 /* 4428 * The internal commands share one command id and hence are 4429 * serialized. This is so because we want to reserve maximum number of 4430 * available command ids for the I/O commands. 4431 */ 4432 mutex_lock(&adapter->int_mtx); 4433 4434 scb = &adapter->int_scb; 4435 memset(scb, 0, sizeof(scb_t)); 4436 4437 sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL); 4438 scmd->device = sdev; 4439 4440 memset(adapter->int_cdb, 0, sizeof(adapter->int_cdb)); 4441 scmd->cmnd = adapter->int_cdb; 4442 scmd->device->host = adapter->host; 4443 scmd->host_scribble = (void *)scb; 4444 scmd->cmnd[0] = MEGA_INTERNAL_CMD; 4445 4446 scb->state |= SCB_ACTIVE; 4447 scb->cmd = scmd; 4448 4449 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4450 4451 /* 4452 * Is it a passthru command 4453 */ 4454 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 4455 4456 scb->pthru = pthru; 4457 } 4458 4459 scb->idx = CMDID_INT_CMDS; 4460 4461 megaraid_queue_lck(scmd, mega_internal_done); 4462 4463 wait_for_completion(&adapter->int_waitq); 4464 4465 rval = scmd->result; 4466 mc->status = scmd->result; 4467 kfree(sdev); 4468 4469 /* 4470 * Print a debug message for all failed commands. Applications can use 4471 * this information. 4472 */ 4473 if( scmd->result && trace_level ) { 4474 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", 4475 mc->cmd, mc->opcode, mc->subopcode, scmd->result); 4476 } 4477 4478 mutex_unlock(&adapter->int_mtx); 4479 4480 scsi_free_command(GFP_KERNEL, scmd); 4481 4482 return rval; 4483 } 4484 4485 4486 /** 4487 * mega_internal_done() 4488 * @scmd - internal scsi command 4489 * 4490 * Callback routine for internal commands. 4491 */ 4492 static void 4493 mega_internal_done(Scsi_Cmnd *scmd) 4494 { 4495 adapter_t *adapter; 4496 4497 adapter = (adapter_t *)scmd->device->host->hostdata; 4498 4499 complete(&adapter->int_waitq); 4500 4501 } 4502 4503 4504 static struct scsi_host_template megaraid_template = { 4505 .module = THIS_MODULE, 4506 .name = "MegaRAID", 4507 .proc_name = "megaraid_legacy", 4508 .info = megaraid_info, 4509 .queuecommand = megaraid_queue, 4510 .bios_param = megaraid_biosparam, 4511 .max_sectors = MAX_SECTORS_PER_IO, 4512 .can_queue = MAX_COMMANDS, 4513 .this_id = DEFAULT_INITIATOR_ID, 4514 .sg_tablesize = MAX_SGLIST, 4515 .cmd_per_lun = DEF_CMD_PER_LUN, 4516 .use_clustering = ENABLE_CLUSTERING, 4517 .eh_abort_handler = megaraid_abort, 4518 .eh_device_reset_handler = megaraid_reset, 4519 .eh_bus_reset_handler = megaraid_reset, 4520 .eh_host_reset_handler = megaraid_reset, 4521 }; 4522 4523 static int __devinit 4524 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4525 { 4526 struct Scsi_Host *host; 4527 adapter_t *adapter; 4528 unsigned long mega_baseport, tbase, flag = 0; 4529 u16 subsysid, subsysvid; 4530 u8 pci_bus, pci_dev_func; 4531 int irq, i, j; 4532 int error = -ENODEV; 4533 4534 if (pci_enable_device(pdev)) 4535 goto out; 4536 pci_set_master(pdev); 4537 4538 pci_bus = pdev->bus->number; 4539 pci_dev_func = pdev->devfn; 4540 4541 /* 4542 * The megaraid3 stuff reports the ID of the Intel part which is not 4543 * remotely specific to the megaraid 4544 */ 4545 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4546 u16 magic; 4547 /* 4548 * Don't fall over the Compaq management cards using the same 4549 * PCI identifier 4550 */ 4551 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4552 pdev->subsystem_device == 0xC000) 4553 return -ENODEV; 4554 /* Now check the magic signature byte */ 4555 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4556 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4557 return -ENODEV; 4558 /* Ok it is probably a megaraid */ 4559 } 4560 4561 /* 4562 * For these vendor and device ids, signature offsets are not 4563 * valid and 64 bit is implicit 4564 */ 4565 if (id->driver_data & BOARD_64BIT) 4566 flag |= BOARD_64BIT; 4567 else { 4568 u32 magic64; 4569 4570 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4571 if (magic64 == HBA_SIGNATURE_64BIT) 4572 flag |= BOARD_64BIT; 4573 } 4574 4575 subsysvid = pdev->subsystem_vendor; 4576 subsysid = pdev->subsystem_device; 4577 4578 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:", 4579 id->vendor, id->device, pci_bus); 4580 4581 printk("slot %d:func %d\n", 4582 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func)); 4583 4584 /* Read the base port and IRQ from PCI */ 4585 mega_baseport = pci_resource_start(pdev, 0); 4586 irq = pdev->irq; 4587 4588 tbase = mega_baseport; 4589 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4590 flag |= BOARD_MEMMAP; 4591 4592 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4593 printk(KERN_WARNING "megaraid: mem region busy!\n"); 4594 goto out_disable_device; 4595 } 4596 4597 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4598 if (!mega_baseport) { 4599 printk(KERN_WARNING 4600 "megaraid: could not map hba memory\n"); 4601 goto out_release_region; 4602 } 4603 } else { 4604 flag |= BOARD_IOMAP; 4605 mega_baseport += 0x10; 4606 4607 if (!request_region(mega_baseport, 16, "megaraid")) 4608 goto out_disable_device; 4609 } 4610 4611 /* Initialize SCSI Host structure */ 4612 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4613 if (!host) 4614 goto out_iounmap; 4615 4616 adapter = (adapter_t *)host->hostdata; 4617 memset(adapter, 0, sizeof(adapter_t)); 4618 4619 printk(KERN_NOTICE 4620 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4621 host->host_no, mega_baseport, irq); 4622 4623 adapter->base = mega_baseport; 4624 if (flag & BOARD_MEMMAP) 4625 adapter->mmio_base = (void __iomem *) mega_baseport; 4626 4627 INIT_LIST_HEAD(&adapter->free_list); 4628 INIT_LIST_HEAD(&adapter->pending_list); 4629 INIT_LIST_HEAD(&adapter->completed_list); 4630 4631 adapter->flag = flag; 4632 spin_lock_init(&adapter->lock); 4633 4634 host->cmd_per_lun = max_cmd_per_lun; 4635 host->max_sectors = max_sectors_per_io; 4636 4637 adapter->dev = pdev; 4638 adapter->host = host; 4639 4640 adapter->host->irq = irq; 4641 4642 if (flag & BOARD_MEMMAP) 4643 adapter->host->base = tbase; 4644 else { 4645 adapter->host->io_port = tbase; 4646 adapter->host->n_io_port = 16; 4647 } 4648 4649 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4650 4651 /* 4652 * Allocate buffer to issue internal commands. 4653 */ 4654 adapter->mega_buffer = pci_alloc_consistent(adapter->dev, 4655 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); 4656 if (!adapter->mega_buffer) { 4657 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4658 goto out_host_put; 4659 } 4660 4661 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL); 4662 if (!adapter->scb_list) { 4663 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4664 goto out_free_cmd_buffer; 4665 } 4666 4667 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4668 megaraid_isr_memmapped : megaraid_isr_iomapped, 4669 IRQF_SHARED, "megaraid", adapter)) { 4670 printk(KERN_WARNING 4671 "megaraid: Couldn't register IRQ %d!\n", irq); 4672 goto out_free_scb_list; 4673 } 4674 4675 if (mega_setup_mailbox(adapter)) 4676 goto out_free_irq; 4677 4678 if (mega_query_adapter(adapter)) 4679 goto out_free_mbox; 4680 4681 /* 4682 * Have checks for some buggy f/w 4683 */ 4684 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4685 /* 4686 * Which firmware 4687 */ 4688 if (!strcmp(adapter->fw_version, "3.00") || 4689 !strcmp(adapter->fw_version, "3.01")) { 4690 4691 printk( KERN_WARNING 4692 "megaraid: Your card is a Dell PERC " 4693 "2/SC RAID controller with " 4694 "firmware\nmegaraid: 3.00 or 3.01. " 4695 "This driver is known to have " 4696 "corruption issues\nmegaraid: with " 4697 "those firmware versions on this " 4698 "specific card. In order\nmegaraid: " 4699 "to protect your data, please upgrade " 4700 "your firmware to version\nmegaraid: " 4701 "3.10 or later, available from the " 4702 "Dell Technical Support web\n" 4703 "megaraid: site at\nhttp://support." 4704 "dell.com/us/en/filelib/download/" 4705 "index.asp?fileid=2940\n" 4706 ); 4707 } 4708 } 4709 4710 /* 4711 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4712 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4713 * support, since this firmware cannot handle 64 bit 4714 * addressing 4715 */ 4716 if ((subsysvid == HP_SUBSYS_VID) && 4717 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4718 /* 4719 * which firmware 4720 */ 4721 if (!strcmp(adapter->fw_version, "H01.07") || 4722 !strcmp(adapter->fw_version, "H01.08") || 4723 !strcmp(adapter->fw_version, "H01.09") ) { 4724 printk(KERN_WARNING 4725 "megaraid: Firmware H.01.07, " 4726 "H.01.08, and H.01.09 on 1M/2M " 4727 "controllers\n" 4728 "megaraid: do not support 64 bit " 4729 "addressing.\nmegaraid: DISABLING " 4730 "64 bit support.\n"); 4731 adapter->flag &= ~BOARD_64BIT; 4732 } 4733 } 4734 4735 if (mega_is_bios_enabled(adapter)) 4736 mega_hbas[hba_count].is_bios_enabled = 1; 4737 mega_hbas[hba_count].hostdata_addr = adapter; 4738 4739 /* 4740 * Find out which channel is raid and which is scsi. This is 4741 * for ROMB support. 4742 */ 4743 mega_enum_raid_scsi(adapter); 4744 4745 /* 4746 * Find out if a logical drive is set as the boot drive. If 4747 * there is one, will make that as the first logical drive. 4748 * ROMB: Do we have to boot from a physical drive. Then all 4749 * the physical drives would appear before the logical disks. 4750 * Else, all the physical drives would be exported to the mid 4751 * layer after logical drives. 4752 */ 4753 mega_get_boot_drv(adapter); 4754 4755 if (adapter->boot_pdrv_enabled) { 4756 j = adapter->product_info.nchannels; 4757 for( i = 0; i < j; i++ ) 4758 adapter->logdrv_chan[i] = 0; 4759 for( i = j; i < NVIRT_CHAN + j; i++ ) 4760 adapter->logdrv_chan[i] = 1; 4761 } else { 4762 for (i = 0; i < NVIRT_CHAN; i++) 4763 adapter->logdrv_chan[i] = 1; 4764 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4765 adapter->logdrv_chan[i] = 0; 4766 adapter->mega_ch_class <<= NVIRT_CHAN; 4767 } 4768 4769 /* 4770 * Do we support random deletion and addition of logical 4771 * drives 4772 */ 4773 adapter->read_ldidmap = 0; /* set it after first logdrv 4774 delete cmd */ 4775 adapter->support_random_del = mega_support_random_del(adapter); 4776 4777 /* Initialize SCBs */ 4778 if (mega_init_scb(adapter)) 4779 goto out_free_mbox; 4780 4781 /* 4782 * Reset the pending commands counter 4783 */ 4784 atomic_set(&adapter->pend_cmds, 0); 4785 4786 /* 4787 * Reset the adapter quiescent flag 4788 */ 4789 atomic_set(&adapter->quiescent, 0); 4790 4791 hba_soft_state[hba_count] = adapter; 4792 4793 /* 4794 * Fill in the structure which needs to be passed back to the 4795 * application when it does an ioctl() for controller related 4796 * information. 4797 */ 4798 i = hba_count; 4799 4800 mcontroller[i].base = mega_baseport; 4801 mcontroller[i].irq = irq; 4802 mcontroller[i].numldrv = adapter->numldrv; 4803 mcontroller[i].pcibus = pci_bus; 4804 mcontroller[i].pcidev = id->device; 4805 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4806 mcontroller[i].pciid = -1; 4807 mcontroller[i].pcivendor = id->vendor; 4808 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4809 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4810 4811 4812 /* Set the Mode of addressing to 64 bit if we can */ 4813 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4814 pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 4815 adapter->has_64bit_addr = 1; 4816 } else { 4817 pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 4818 adapter->has_64bit_addr = 0; 4819 } 4820 4821 mutex_init(&adapter->int_mtx); 4822 init_completion(&adapter->int_waitq); 4823 4824 adapter->this_id = DEFAULT_INITIATOR_ID; 4825 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4826 4827 #if MEGA_HAVE_CLUSTERING 4828 /* 4829 * Is cluster support enabled on this controller 4830 * Note: In a cluster the HBAs ( the initiators ) will have 4831 * different target IDs and we cannot assume it to be 7. Call 4832 * to mega_support_cluster() will get the target ids also if 4833 * the cluster support is available 4834 */ 4835 adapter->has_cluster = mega_support_cluster(adapter); 4836 if (adapter->has_cluster) { 4837 printk(KERN_NOTICE 4838 "megaraid: Cluster driver, initiator id:%d\n", 4839 adapter->this_id); 4840 } 4841 #endif 4842 4843 pci_set_drvdata(pdev, host); 4844 4845 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4846 4847 error = scsi_add_host(host, &pdev->dev); 4848 if (error) 4849 goto out_free_mbox; 4850 4851 scsi_scan_host(host); 4852 hba_count++; 4853 return 0; 4854 4855 out_free_mbox: 4856 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4857 adapter->una_mbox64, adapter->una_mbox64_dma); 4858 out_free_irq: 4859 free_irq(adapter->host->irq, adapter); 4860 out_free_scb_list: 4861 kfree(adapter->scb_list); 4862 out_free_cmd_buffer: 4863 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4864 adapter->mega_buffer, adapter->buf_dma_handle); 4865 out_host_put: 4866 scsi_host_put(host); 4867 out_iounmap: 4868 if (flag & BOARD_MEMMAP) 4869 iounmap((void *)mega_baseport); 4870 out_release_region: 4871 if (flag & BOARD_MEMMAP) 4872 release_mem_region(tbase, 128); 4873 else 4874 release_region(mega_baseport, 16); 4875 out_disable_device: 4876 pci_disable_device(pdev); 4877 out: 4878 return error; 4879 } 4880 4881 static void 4882 __megaraid_shutdown(adapter_t *adapter) 4883 { 4884 u_char raw_mbox[sizeof(struct mbox_out)]; 4885 mbox_t *mbox = (mbox_t *)raw_mbox; 4886 int i; 4887 4888 /* Flush adapter cache */ 4889 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4890 raw_mbox[0] = FLUSH_ADAPTER; 4891 4892 free_irq(adapter->host->irq, adapter); 4893 4894 /* Issue a blocking (interrupts disabled) command to the card */ 4895 issue_scb_block(adapter, raw_mbox); 4896 4897 /* Flush disks cache */ 4898 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4899 raw_mbox[0] = FLUSH_SYSTEM; 4900 4901 /* Issue a blocking (interrupts disabled) command to the card */ 4902 issue_scb_block(adapter, raw_mbox); 4903 4904 if (atomic_read(&adapter->pend_cmds) > 0) 4905 printk(KERN_WARNING "megaraid: pending commands!!\n"); 4906 4907 /* 4908 * Have a delibrate delay to make sure all the caches are 4909 * actually flushed. 4910 */ 4911 for (i = 0; i <= 10; i++) 4912 mdelay(1000); 4913 } 4914 4915 static void __devexit 4916 megaraid_remove_one(struct pci_dev *pdev) 4917 { 4918 struct Scsi_Host *host = pci_get_drvdata(pdev); 4919 adapter_t *adapter = (adapter_t *)host->hostdata; 4920 4921 scsi_remove_host(host); 4922 4923 __megaraid_shutdown(adapter); 4924 4925 /* Free our resources */ 4926 if (adapter->flag & BOARD_MEMMAP) { 4927 iounmap((void *)adapter->base); 4928 release_mem_region(adapter->host->base, 128); 4929 } else 4930 release_region(adapter->base, 16); 4931 4932 mega_free_sgl(adapter); 4933 4934 #ifdef CONFIG_PROC_FS 4935 if (adapter->controller_proc_dir_entry) { 4936 remove_proc_entry("stat", adapter->controller_proc_dir_entry); 4937 remove_proc_entry("config", 4938 adapter->controller_proc_dir_entry); 4939 remove_proc_entry("mailbox", 4940 adapter->controller_proc_dir_entry); 4941 #if MEGA_HAVE_ENH_PROC 4942 remove_proc_entry("rebuild-rate", 4943 adapter->controller_proc_dir_entry); 4944 remove_proc_entry("battery-status", 4945 adapter->controller_proc_dir_entry); 4946 4947 remove_proc_entry("diskdrives-ch0", 4948 adapter->controller_proc_dir_entry); 4949 remove_proc_entry("diskdrives-ch1", 4950 adapter->controller_proc_dir_entry); 4951 remove_proc_entry("diskdrives-ch2", 4952 adapter->controller_proc_dir_entry); 4953 remove_proc_entry("diskdrives-ch3", 4954 adapter->controller_proc_dir_entry); 4955 4956 remove_proc_entry("raiddrives-0-9", 4957 adapter->controller_proc_dir_entry); 4958 remove_proc_entry("raiddrives-10-19", 4959 adapter->controller_proc_dir_entry); 4960 remove_proc_entry("raiddrives-20-29", 4961 adapter->controller_proc_dir_entry); 4962 remove_proc_entry("raiddrives-30-39", 4963 adapter->controller_proc_dir_entry); 4964 #endif 4965 { 4966 char buf[12] = { 0 }; 4967 sprintf(buf, "hba%d", adapter->host->host_no); 4968 remove_proc_entry(buf, mega_proc_dir_entry); 4969 } 4970 } 4971 #endif 4972 4973 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4974 adapter->mega_buffer, adapter->buf_dma_handle); 4975 kfree(adapter->scb_list); 4976 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4977 adapter->una_mbox64, adapter->una_mbox64_dma); 4978 4979 scsi_host_put(host); 4980 pci_disable_device(pdev); 4981 4982 hba_count--; 4983 } 4984 4985 static void 4986 megaraid_shutdown(struct pci_dev *pdev) 4987 { 4988 struct Scsi_Host *host = pci_get_drvdata(pdev); 4989 adapter_t *adapter = (adapter_t *)host->hostdata; 4990 4991 __megaraid_shutdown(adapter); 4992 } 4993 4994 static struct pci_device_id megaraid_pci_tbl[] = { 4995 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 4996 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4997 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 4998 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4999 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 5000 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5001 {0,} 5002 }; 5003 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 5004 5005 static struct pci_driver megaraid_pci_driver = { 5006 .name = "megaraid_legacy", 5007 .id_table = megaraid_pci_tbl, 5008 .probe = megaraid_probe_one, 5009 .remove = __devexit_p(megaraid_remove_one), 5010 .shutdown = megaraid_shutdown, 5011 }; 5012 5013 static int __init megaraid_init(void) 5014 { 5015 int error; 5016 5017 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 5018 max_cmd_per_lun = MAX_CMD_PER_LUN; 5019 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 5020 max_mbox_busy_wait = MBOX_BUSY_WAIT; 5021 5022 #ifdef CONFIG_PROC_FS 5023 mega_proc_dir_entry = proc_mkdir("megaraid", NULL); 5024 if (!mega_proc_dir_entry) { 5025 printk(KERN_WARNING 5026 "megaraid: failed to create megaraid root\n"); 5027 } 5028 #endif 5029 error = pci_register_driver(&megaraid_pci_driver); 5030 if (error) { 5031 #ifdef CONFIG_PROC_FS 5032 remove_proc_entry("megaraid", NULL); 5033 #endif 5034 return error; 5035 } 5036 5037 /* 5038 * Register the driver as a character device, for applications 5039 * to access it for ioctls. 5040 * First argument (major) to register_chrdev implies a dynamic 5041 * major number allocation. 5042 */ 5043 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 5044 if (!major) { 5045 printk(KERN_WARNING 5046 "megaraid: failed to register char device\n"); 5047 } 5048 5049 return 0; 5050 } 5051 5052 static void __exit megaraid_exit(void) 5053 { 5054 /* 5055 * Unregister the character device interface to the driver. 5056 */ 5057 unregister_chrdev(major, "megadev_legacy"); 5058 5059 pci_unregister_driver(&megaraid_pci_driver); 5060 5061 #ifdef CONFIG_PROC_FS 5062 remove_proc_entry("megaraid", NULL); 5063 #endif 5064 } 5065 5066 module_init(megaraid_init); 5067 module_exit(megaraid_exit); 5068 5069 /* vi: set ts=8 sw=8 tw=78: */ 5070