1 /* 2 * 3 * Linux MegaRAID device driver 4 * 5 * Copyright � 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 : v2.00.3 (Feb 19, 2003) - Atul Mukker <Atul.Mukker@lsil.com> 21 * 22 * Description: Linux device driver for LSI Logic MegaRAID controller 23 * 24 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 25 * 518, 520, 531, 532 26 * 27 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell, 28 * and others. Please send updates to the mailing list 29 * linux-scsi@vger.kernel.org . 30 * 31 */ 32 33 #include <linux/mm.h> 34 #include <linux/fs.h> 35 #include <linux/blkdev.h> 36 #include <asm/uaccess.h> 37 #include <asm/io.h> 38 #include <linux/completion.h> 39 #include <linux/delay.h> 40 #include <linux/proc_fs.h> 41 #include <linux/reboot.h> 42 #include <linux/module.h> 43 #include <linux/list.h> 44 #include <linux/interrupt.h> 45 #include <linux/pci.h> 46 #include <linux/init.h> 47 #include <scsi/scsicam.h> 48 49 #include "scsi.h" 50 #include <scsi/scsi_host.h> 51 52 #include "megaraid.h" 53 54 #define MEGARAID_MODULE_VERSION "2.00.3" 55 56 MODULE_AUTHOR ("LSI Logic Corporation"); 57 MODULE_DESCRIPTION ("LSI Logic MegaRAID driver"); 58 MODULE_LICENSE ("GPL"); 59 MODULE_VERSION(MEGARAID_MODULE_VERSION); 60 61 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; 62 module_param(max_cmd_per_lun, uint, 0); 63 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)"); 64 65 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO; 66 module_param(max_sectors_per_io, ushort, 0); 67 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)"); 68 69 70 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; 71 module_param(max_mbox_busy_wait, ushort, 0); 72 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)"); 73 74 #define RDINDOOR(adapter) readl((adapter)->base + 0x20) 75 #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C) 76 #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20) 77 #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C) 78 79 /* 80 * Global variables 81 */ 82 83 static int hba_count; 84 static adapter_t *hba_soft_state[MAX_CONTROLLERS]; 85 static struct proc_dir_entry *mega_proc_dir_entry; 86 87 /* For controller re-ordering */ 88 static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; 89 90 /* 91 * The File Operations structure for the serial/ioctl interface of the driver 92 */ 93 static struct file_operations megadev_fops = { 94 .owner = THIS_MODULE, 95 .ioctl = megadev_ioctl, 96 .open = megadev_open, 97 }; 98 99 /* 100 * Array to structures for storing the information about the controllers. This 101 * information is sent to the user level applications, when they do an ioctl 102 * for this information. 103 */ 104 static struct mcontroller mcontroller[MAX_CONTROLLERS]; 105 106 /* The current driver version */ 107 static u32 driver_ver = 0x02000000; 108 109 /* major number used by the device for character interface */ 110 static int major; 111 112 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01) 113 114 115 /* 116 * Debug variable to print some diagnostic messages 117 */ 118 static int trace_level; 119 120 /** 121 * mega_setup_mailbox() 122 * @adapter - pointer to our soft state 123 * 124 * Allocates a 8 byte aligned memory for the handshake mailbox. 125 */ 126 static int 127 mega_setup_mailbox(adapter_t *adapter) 128 { 129 unsigned long align; 130 131 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev, 132 sizeof(mbox64_t), &adapter->una_mbox64_dma); 133 134 if( !adapter->una_mbox64 ) return -1; 135 136 adapter->mbox = &adapter->una_mbox64->mbox; 137 138 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & 139 (~0UL ^ 0xFUL)); 140 141 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); 142 143 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); 144 145 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; 146 147 /* 148 * Register the mailbox if the controller is an io-mapped controller 149 */ 150 if( adapter->flag & BOARD_IOMAP ) { 151 152 outb_p(adapter->mbox_dma & 0xFF, 153 adapter->host->io_port + MBOX_PORT0); 154 155 outb_p((adapter->mbox_dma >> 8) & 0xFF, 156 adapter->host->io_port + MBOX_PORT1); 157 158 outb_p((adapter->mbox_dma >> 16) & 0xFF, 159 adapter->host->io_port + MBOX_PORT2); 160 161 outb_p((adapter->mbox_dma >> 24) & 0xFF, 162 adapter->host->io_port + MBOX_PORT3); 163 164 outb_p(ENABLE_MBOX_BYTE, 165 adapter->host->io_port + ENABLE_MBOX_REGION); 166 167 irq_ack(adapter); 168 169 irq_enable(adapter); 170 } 171 172 return 0; 173 } 174 175 176 /* 177 * mega_query_adapter() 178 * @adapter - pointer to our soft state 179 * 180 * Issue the adapter inquiry commands to the controller and find out 181 * information and parameter about the devices attached 182 */ 183 static int 184 mega_query_adapter(adapter_t *adapter) 185 { 186 dma_addr_t prod_info_dma_handle; 187 mega_inquiry3 *inquiry3; 188 u8 raw_mbox[sizeof(struct mbox_out)]; 189 mbox_t *mbox; 190 int retval; 191 192 /* Initialize adapter inquiry mailbox */ 193 194 mbox = (mbox_t *)raw_mbox; 195 196 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 197 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 198 199 /* 200 * Try to issue Inquiry3 command 201 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and 202 * update enquiry3 structure 203 */ 204 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 205 206 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; 207 208 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 209 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ 210 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ 211 212 /* Issue a blocking command to the card */ 213 if ((retval = issue_scb_block(adapter, raw_mbox))) { 214 /* the adapter does not support 40ld */ 215 216 mraid_ext_inquiry *ext_inq; 217 mraid_inquiry *inq; 218 dma_addr_t dma_handle; 219 220 ext_inq = pci_alloc_consistent(adapter->dev, 221 sizeof(mraid_ext_inquiry), &dma_handle); 222 223 if( ext_inq == NULL ) return -1; 224 225 inq = &ext_inq->raid_inq; 226 227 mbox->m_out.xferaddr = (u32)dma_handle; 228 229 /*issue old 0x04 command to adapter */ 230 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ; 231 232 issue_scb_block(adapter, raw_mbox); 233 234 /* 235 * update Enquiry3 and ProductInfo structures with 236 * mraid_inquiry structure 237 */ 238 mega_8_to_40ld(inq, inquiry3, 239 (mega_product_info *)&adapter->product_info); 240 241 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry), 242 ext_inq, dma_handle); 243 244 } else { /*adapter supports 40ld */ 245 adapter->flag |= BOARD_40LD; 246 247 /* 248 * get product_info, which is static information and will be 249 * unchanged 250 */ 251 prod_info_dma_handle = pci_map_single(adapter->dev, (void *) 252 &adapter->product_info, 253 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 254 255 mbox->m_out.xferaddr = prod_info_dma_handle; 256 257 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 258 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ 259 260 if ((retval = issue_scb_block(adapter, raw_mbox))) 261 printk(KERN_WARNING 262 "megaraid: Product_info cmd failed with error: %d\n", 263 retval); 264 265 pci_unmap_single(adapter->dev, prod_info_dma_handle, 266 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 267 } 268 269 270 /* 271 * kernel scans the channels from 0 to <= max_channel 272 */ 273 adapter->host->max_channel = 274 adapter->product_info.nchannels + NVIRT_CHAN -1; 275 276 adapter->host->max_id = 16; /* max targets per channel */ 277 278 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */ 279 280 adapter->host->cmd_per_lun = max_cmd_per_lun; 281 282 adapter->numldrv = inquiry3->num_ldrv; 283 284 adapter->max_cmds = adapter->product_info.max_commands; 285 286 if(adapter->max_cmds > MAX_COMMANDS) 287 adapter->max_cmds = MAX_COMMANDS; 288 289 adapter->host->can_queue = adapter->max_cmds - 1; 290 291 /* 292 * Get the maximum number of scatter-gather elements supported by this 293 * firmware 294 */ 295 mega_get_max_sgl(adapter); 296 297 adapter->host->sg_tablesize = adapter->sglen; 298 299 300 /* use HP firmware and bios version encoding */ 301 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) { 302 sprintf (adapter->fw_version, "%c%d%d.%d%d", 303 adapter->product_info.fw_version[2], 304 adapter->product_info.fw_version[1] >> 8, 305 adapter->product_info.fw_version[1] & 0x0f, 306 adapter->product_info.fw_version[0] >> 8, 307 adapter->product_info.fw_version[0] & 0x0f); 308 sprintf (adapter->bios_version, "%c%d%d.%d%d", 309 adapter->product_info.bios_version[2], 310 adapter->product_info.bios_version[1] >> 8, 311 adapter->product_info.bios_version[1] & 0x0f, 312 adapter->product_info.bios_version[0] >> 8, 313 adapter->product_info.bios_version[0] & 0x0f); 314 } else { 315 memcpy(adapter->fw_version, 316 (char *)adapter->product_info.fw_version, 4); 317 adapter->fw_version[4] = 0; 318 319 memcpy(adapter->bios_version, 320 (char *)adapter->product_info.bios_version, 4); 321 322 adapter->bios_version[4] = 0; 323 } 324 325 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n", 326 adapter->fw_version, adapter->bios_version, adapter->numldrv); 327 328 /* 329 * Do we support extended (>10 bytes) cdbs 330 */ 331 adapter->support_ext_cdb = mega_support_ext_cdb(adapter); 332 if (adapter->support_ext_cdb) 333 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n"); 334 335 336 return 0; 337 } 338 339 /** 340 * mega_runpendq() 341 * @adapter - pointer to our soft state 342 * 343 * Runs through the list of pending requests. 344 */ 345 static inline void 346 mega_runpendq(adapter_t *adapter) 347 { 348 if(!list_empty(&adapter->pending_list)) 349 __mega_runpendq(adapter); 350 } 351 352 /* 353 * megaraid_queue() 354 * @scmd - Issue this scsi command 355 * @done - the callback hook into the scsi mid-layer 356 * 357 * The command queuing entry point for the mid-layer. 358 */ 359 static int 360 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *)) 361 { 362 adapter_t *adapter; 363 scb_t *scb; 364 int busy=0; 365 366 adapter = (adapter_t *)scmd->device->host->hostdata; 367 368 scmd->scsi_done = done; 369 370 371 /* 372 * Allocate and build a SCB request 373 * busy flag will be set if mega_build_cmd() command could not 374 * allocate scb. We will return non-zero status in that case. 375 * NOTE: scb can be null even though certain commands completed 376 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would 377 * return 0 in that case. 378 */ 379 380 scb = mega_build_cmd(adapter, scmd, &busy); 381 382 if(scb) { 383 scb->state |= SCB_PENDQ; 384 list_add_tail(&scb->list, &adapter->pending_list); 385 386 /* 387 * Check if the HBA is in quiescent state, e.g., during a 388 * delete logical drive opertion. If it is, don't run 389 * the pending_list. 390 */ 391 if(atomic_read(&adapter->quiescent) == 0) { 392 mega_runpendq(adapter); 393 } 394 return 0; 395 } 396 397 return busy; 398 } 399 400 /** 401 * mega_allocate_scb() 402 * @adapter - pointer to our soft state 403 * @cmd - scsi command from the mid-layer 404 * 405 * Allocate a SCB structure. This is the central structure for controller 406 * commands. 407 */ 408 static inline scb_t * 409 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd) 410 { 411 struct list_head *head = &adapter->free_list; 412 scb_t *scb; 413 414 /* Unlink command from Free List */ 415 if( !list_empty(head) ) { 416 417 scb = list_entry(head->next, scb_t, list); 418 419 list_del_init(head->next); 420 421 scb->state = SCB_ACTIVE; 422 scb->cmd = cmd; 423 scb->dma_type = MEGA_DMA_TYPE_NONE; 424 425 return scb; 426 } 427 428 return NULL; 429 } 430 431 /** 432 * mega_get_ldrv_num() 433 * @adapter - pointer to our soft state 434 * @cmd - scsi mid layer command 435 * @channel - channel on the controller 436 * 437 * Calculate the logical drive number based on the information in scsi command 438 * and the channel number. 439 */ 440 static inline int 441 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel) 442 { 443 int tgt; 444 int ldrv_num; 445 446 tgt = cmd->device->id; 447 448 if ( tgt > adapter->this_id ) 449 tgt--; /* we do not get inquires for initiator id */ 450 451 ldrv_num = (channel * 15) + tgt; 452 453 454 /* 455 * If we have a logical drive with boot enabled, project it first 456 */ 457 if( adapter->boot_ldrv_enabled ) { 458 if( ldrv_num == 0 ) { 459 ldrv_num = adapter->boot_ldrv; 460 } 461 else { 462 if( ldrv_num <= adapter->boot_ldrv ) { 463 ldrv_num--; 464 } 465 } 466 } 467 468 /* 469 * If "delete logical drive" feature is enabled on this controller. 470 * Do only if at least one delete logical drive operation was done. 471 * 472 * Also, after logical drive deletion, instead of logical drive number, 473 * the value returned should be 0x80+logical drive id. 474 * 475 * These is valid only for IO commands. 476 */ 477 478 if (adapter->support_random_del && adapter->read_ldidmap ) 479 switch (cmd->cmnd[0]) { 480 case READ_6: /* fall through */ 481 case WRITE_6: /* fall through */ 482 case READ_10: /* fall through */ 483 case WRITE_10: 484 ldrv_num += 0x80; 485 } 486 487 return ldrv_num; 488 } 489 490 /** 491 * mega_build_cmd() 492 * @adapter - pointer to our soft state 493 * @cmd - Prepare using this scsi command 494 * @busy - busy flag if no resources 495 * 496 * Prepares a command and scatter gather list for the controller. This routine 497 * also finds out if the commands is intended for a logical drive or a 498 * physical device and prepares the controller command accordingly. 499 * 500 * We also re-order the logical drives and physical devices based on their 501 * boot settings. 502 */ 503 static scb_t * 504 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy) 505 { 506 mega_ext_passthru *epthru; 507 mega_passthru *pthru; 508 scb_t *scb; 509 mbox_t *mbox; 510 long seg; 511 char islogical; 512 int max_ldrv_num; 513 int channel = 0; 514 int target = 0; 515 int ldrv_num = 0; /* logical drive number */ 516 517 518 /* 519 * filter the internal and ioctl commands 520 */ 521 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) { 522 return cmd->buffer; 523 } 524 525 526 /* 527 * We know what channels our logical drives are on - mega_find_card() 528 */ 529 islogical = adapter->logdrv_chan[cmd->device->channel]; 530 531 /* 532 * The theory: If physical drive is chosen for boot, all the physical 533 * devices are exported before the logical drives, otherwise physical 534 * devices are pushed after logical drives, in which case - Kernel sees 535 * the physical devices on virtual channel which is obviously converted 536 * to actual channel on the HBA. 537 */ 538 if( adapter->boot_pdrv_enabled ) { 539 if( islogical ) { 540 /* logical channel */ 541 channel = cmd->device->channel - 542 adapter->product_info.nchannels; 543 } 544 else { 545 /* this is physical channel */ 546 channel = cmd->device->channel; 547 target = cmd->device->id; 548 549 /* 550 * boot from a physical disk, that disk needs to be 551 * exposed first IF both the channels are SCSI, then 552 * booting from the second channel is not allowed. 553 */ 554 if( target == 0 ) { 555 target = adapter->boot_pdrv_tgt; 556 } 557 else if( target == adapter->boot_pdrv_tgt ) { 558 target = 0; 559 } 560 } 561 } 562 else { 563 if( islogical ) { 564 /* this is the logical channel */ 565 channel = cmd->device->channel; 566 } 567 else { 568 /* physical channel */ 569 channel = cmd->device->channel - NVIRT_CHAN; 570 target = cmd->device->id; 571 } 572 } 573 574 575 if(islogical) { 576 577 /* have just LUN 0 for each target on virtual channels */ 578 if (cmd->device->lun) { 579 cmd->result = (DID_BAD_TARGET << 16); 580 cmd->scsi_done(cmd); 581 return NULL; 582 } 583 584 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 585 586 587 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 588 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 589 590 /* 591 * max_ldrv_num increases by 0x80 if some logical drive was 592 * deleted. 593 */ 594 if(adapter->read_ldidmap) 595 max_ldrv_num += 0x80; 596 597 if(ldrv_num > max_ldrv_num ) { 598 cmd->result = (DID_BAD_TARGET << 16); 599 cmd->scsi_done(cmd); 600 return NULL; 601 } 602 603 } 604 else { 605 if( cmd->device->lun > 7) { 606 /* 607 * Do not support lun >7 for physically accessed 608 * devices 609 */ 610 cmd->result = (DID_BAD_TARGET << 16); 611 cmd->scsi_done(cmd); 612 return NULL; 613 } 614 } 615 616 /* 617 * 618 * Logical drive commands 619 * 620 */ 621 if(islogical) { 622 switch (cmd->cmnd[0]) { 623 case TEST_UNIT_READY: 624 #if MEGA_HAVE_CLUSTERING 625 /* 626 * Do we support clustering and is the support enabled 627 * If no, return success always 628 */ 629 if( !adapter->has_cluster ) { 630 cmd->result = (DID_OK << 16); 631 cmd->scsi_done(cmd); 632 return NULL; 633 } 634 635 if(!(scb = mega_allocate_scb(adapter, cmd))) { 636 *busy = 1; 637 return NULL; 638 } 639 640 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 641 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 642 scb->raw_mbox[3] = ldrv_num; 643 644 scb->dma_direction = PCI_DMA_NONE; 645 646 return scb; 647 #else 648 cmd->result = (DID_OK << 16); 649 cmd->scsi_done(cmd); 650 return NULL; 651 #endif 652 653 case MODE_SENSE: { 654 char *buf; 655 656 if (cmd->use_sg) { 657 struct scatterlist *sg; 658 659 sg = (struct scatterlist *)cmd->request_buffer; 660 buf = kmap_atomic(sg->page, KM_IRQ0) + 661 sg->offset; 662 } else 663 buf = cmd->request_buffer; 664 memset(cmd->request_buffer, 0, cmd->cmnd[4]); 665 if (cmd->use_sg) { 666 struct scatterlist *sg; 667 668 sg = (struct scatterlist *)cmd->request_buffer; 669 kunmap_atomic(buf - sg->offset, KM_IRQ0); 670 } 671 cmd->result = (DID_OK << 16); 672 cmd->scsi_done(cmd); 673 return NULL; 674 } 675 676 case READ_CAPACITY: 677 case INQUIRY: 678 679 if(!(adapter->flag & (1L << cmd->device->channel))) { 680 681 printk(KERN_NOTICE 682 "scsi%d: scanning scsi channel %d ", 683 adapter->host->host_no, 684 cmd->device->channel); 685 printk("for logical drives.\n"); 686 687 adapter->flag |= (1L << cmd->device->channel); 688 } 689 690 /* Allocate a SCB and initialize passthru */ 691 if(!(scb = mega_allocate_scb(adapter, cmd))) { 692 *busy = 1; 693 return NULL; 694 } 695 pthru = scb->pthru; 696 697 mbox = (mbox_t *)scb->raw_mbox; 698 memset(mbox, 0, sizeof(scb->raw_mbox)); 699 memset(pthru, 0, sizeof(mega_passthru)); 700 701 pthru->timeout = 0; 702 pthru->ars = 1; 703 pthru->reqsenselen = 14; 704 pthru->islogical = 1; 705 pthru->logdrv = ldrv_num; 706 pthru->cdblen = cmd->cmd_len; 707 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 708 709 if( adapter->has_64bit_addr ) { 710 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 711 } 712 else { 713 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 714 } 715 716 scb->dma_direction = PCI_DMA_FROMDEVICE; 717 718 pthru->numsgelements = mega_build_sglist(adapter, scb, 719 &pthru->dataxferaddr, &pthru->dataxferlen); 720 721 mbox->m_out.xferaddr = scb->pthru_dma_addr; 722 723 return scb; 724 725 case READ_6: 726 case WRITE_6: 727 case READ_10: 728 case WRITE_10: 729 case READ_12: 730 case WRITE_12: 731 732 /* Allocate a SCB and initialize mailbox */ 733 if(!(scb = mega_allocate_scb(adapter, cmd))) { 734 *busy = 1; 735 return NULL; 736 } 737 mbox = (mbox_t *)scb->raw_mbox; 738 739 memset(mbox, 0, sizeof(scb->raw_mbox)); 740 mbox->m_out.logdrv = ldrv_num; 741 742 /* 743 * A little hack: 2nd bit is zero for all scsi read 744 * commands and is set for all scsi write commands 745 */ 746 if( adapter->has_64bit_addr ) { 747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 748 MEGA_MBOXCMD_LWRITE64: 749 MEGA_MBOXCMD_LREAD64 ; 750 } 751 else { 752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 753 MEGA_MBOXCMD_LWRITE: 754 MEGA_MBOXCMD_LREAD ; 755 } 756 757 /* 758 * 6-byte READ(0x08) or WRITE(0x0A) cdb 759 */ 760 if( cmd->cmd_len == 6 ) { 761 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 762 mbox->m_out.lba = 763 ((u32)cmd->cmnd[1] << 16) | 764 ((u32)cmd->cmnd[2] << 8) | 765 (u32)cmd->cmnd[3]; 766 767 mbox->m_out.lba &= 0x1FFFFF; 768 769 #if MEGA_HAVE_STATS 770 /* 771 * Take modulo 0x80, since the logical drive 772 * number increases by 0x80 when a logical 773 * drive was deleted 774 */ 775 if (*cmd->cmnd == READ_6) { 776 adapter->nreads[ldrv_num%0x80]++; 777 adapter->nreadblocks[ldrv_num%0x80] += 778 mbox->m_out.numsectors; 779 } else { 780 adapter->nwrites[ldrv_num%0x80]++; 781 adapter->nwriteblocks[ldrv_num%0x80] += 782 mbox->m_out.numsectors; 783 } 784 #endif 785 } 786 787 /* 788 * 10-byte READ(0x28) or WRITE(0x2A) cdb 789 */ 790 if( cmd->cmd_len == 10 ) { 791 mbox->m_out.numsectors = 792 (u32)cmd->cmnd[8] | 793 ((u32)cmd->cmnd[7] << 8); 794 mbox->m_out.lba = 795 ((u32)cmd->cmnd[2] << 24) | 796 ((u32)cmd->cmnd[3] << 16) | 797 ((u32)cmd->cmnd[4] << 8) | 798 (u32)cmd->cmnd[5]; 799 800 #if MEGA_HAVE_STATS 801 if (*cmd->cmnd == READ_10) { 802 adapter->nreads[ldrv_num%0x80]++; 803 adapter->nreadblocks[ldrv_num%0x80] += 804 mbox->m_out.numsectors; 805 } else { 806 adapter->nwrites[ldrv_num%0x80]++; 807 adapter->nwriteblocks[ldrv_num%0x80] += 808 mbox->m_out.numsectors; 809 } 810 #endif 811 } 812 813 /* 814 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 815 */ 816 if( cmd->cmd_len == 12 ) { 817 mbox->m_out.lba = 818 ((u32)cmd->cmnd[2] << 24) | 819 ((u32)cmd->cmnd[3] << 16) | 820 ((u32)cmd->cmnd[4] << 8) | 821 (u32)cmd->cmnd[5]; 822 823 mbox->m_out.numsectors = 824 ((u32)cmd->cmnd[6] << 24) | 825 ((u32)cmd->cmnd[7] << 16) | 826 ((u32)cmd->cmnd[8] << 8) | 827 (u32)cmd->cmnd[9]; 828 829 #if MEGA_HAVE_STATS 830 if (*cmd->cmnd == READ_12) { 831 adapter->nreads[ldrv_num%0x80]++; 832 adapter->nreadblocks[ldrv_num%0x80] += 833 mbox->m_out.numsectors; 834 } else { 835 adapter->nwrites[ldrv_num%0x80]++; 836 adapter->nwriteblocks[ldrv_num%0x80] += 837 mbox->m_out.numsectors; 838 } 839 #endif 840 } 841 842 /* 843 * If it is a read command 844 */ 845 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 846 scb->dma_direction = PCI_DMA_FROMDEVICE; 847 } 848 else { 849 scb->dma_direction = PCI_DMA_TODEVICE; 850 } 851 852 /* Calculate Scatter-Gather info */ 853 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 854 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg); 855 856 return scb; 857 858 #if MEGA_HAVE_CLUSTERING 859 case RESERVE: /* Fall through */ 860 case RELEASE: 861 862 /* 863 * Do we support clustering and is the support enabled 864 */ 865 if( ! adapter->has_cluster ) { 866 867 cmd->result = (DID_BAD_TARGET << 16); 868 cmd->scsi_done(cmd); 869 return NULL; 870 } 871 872 /* Allocate a SCB and initialize mailbox */ 873 if(!(scb = mega_allocate_scb(adapter, cmd))) { 874 *busy = 1; 875 return NULL; 876 } 877 878 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 879 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? 880 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 881 882 scb->raw_mbox[3] = ldrv_num; 883 884 scb->dma_direction = PCI_DMA_NONE; 885 886 return scb; 887 #endif 888 889 default: 890 cmd->result = (DID_BAD_TARGET << 16); 891 cmd->scsi_done(cmd); 892 return NULL; 893 } 894 } 895 896 /* 897 * Passthru drive commands 898 */ 899 else { 900 /* Allocate a SCB and initialize passthru */ 901 if(!(scb = mega_allocate_scb(adapter, cmd))) { 902 *busy = 1; 903 return NULL; 904 } 905 906 mbox = (mbox_t *)scb->raw_mbox; 907 memset(mbox, 0, sizeof(scb->raw_mbox)); 908 909 if( adapter->support_ext_cdb ) { 910 911 epthru = mega_prepare_extpassthru(adapter, scb, cmd, 912 channel, target); 913 914 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 915 916 mbox->m_out.xferaddr = scb->epthru_dma_addr; 917 918 } 919 else { 920 921 pthru = mega_prepare_passthru(adapter, scb, cmd, 922 channel, target); 923 924 /* Initialize mailbox */ 925 if( adapter->has_64bit_addr ) { 926 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 927 } 928 else { 929 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 930 } 931 932 mbox->m_out.xferaddr = scb->pthru_dma_addr; 933 934 } 935 return scb; 936 } 937 return NULL; 938 } 939 940 941 /** 942 * mega_prepare_passthru() 943 * @adapter - pointer to our soft state 944 * @scb - our scsi control block 945 * @cmd - scsi command from the mid-layer 946 * @channel - actual channel on the controller 947 * @target - actual id on the controller. 948 * 949 * prepare a command for the scsi physical devices. 950 */ 951 static mega_passthru * 952 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 953 int channel, int target) 954 { 955 mega_passthru *pthru; 956 957 pthru = scb->pthru; 958 memset(pthru, 0, sizeof (mega_passthru)); 959 960 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 961 pthru->timeout = 2; 962 963 pthru->ars = 1; 964 pthru->reqsenselen = 14; 965 pthru->islogical = 0; 966 967 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 968 969 pthru->target = (adapter->flag & BOARD_40LD) ? 970 (channel << 4) | target : target; 971 972 pthru->cdblen = cmd->cmd_len; 973 pthru->logdrv = cmd->device->lun; 974 975 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 976 977 /* Not sure about the direction */ 978 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 979 980 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 981 switch (cmd->cmnd[0]) { 982 case INQUIRY: 983 case READ_CAPACITY: 984 if(!(adapter->flag & (1L << cmd->device->channel))) { 985 986 printk(KERN_NOTICE 987 "scsi%d: scanning scsi channel %d [P%d] ", 988 adapter->host->host_no, 989 cmd->device->channel, channel); 990 printk("for physical devices.\n"); 991 992 adapter->flag |= (1L << cmd->device->channel); 993 } 994 /* Fall through */ 995 default: 996 pthru->numsgelements = mega_build_sglist(adapter, scb, 997 &pthru->dataxferaddr, &pthru->dataxferlen); 998 break; 999 } 1000 return pthru; 1001 } 1002 1003 1004 /** 1005 * mega_prepare_extpassthru() 1006 * @adapter - pointer to our soft state 1007 * @scb - our scsi control block 1008 * @cmd - scsi command from the mid-layer 1009 * @channel - actual channel on the controller 1010 * @target - actual id on the controller. 1011 * 1012 * prepare a command for the scsi physical devices. This rountine prepares 1013 * commands for devices which can take extended CDBs (>10 bytes) 1014 */ 1015 static mega_ext_passthru * 1016 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 1017 int channel, int target) 1018 { 1019 mega_ext_passthru *epthru; 1020 1021 epthru = scb->epthru; 1022 memset(epthru, 0, sizeof(mega_ext_passthru)); 1023 1024 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1025 epthru->timeout = 2; 1026 1027 epthru->ars = 1; 1028 epthru->reqsenselen = 14; 1029 epthru->islogical = 0; 1030 1031 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1032 epthru->target = (adapter->flag & BOARD_40LD) ? 1033 (channel << 4) | target : target; 1034 1035 epthru->cdblen = cmd->cmd_len; 1036 epthru->logdrv = cmd->device->lun; 1037 1038 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1039 1040 /* Not sure about the direction */ 1041 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 1042 1043 switch(cmd->cmnd[0]) { 1044 case INQUIRY: 1045 case READ_CAPACITY: 1046 if(!(adapter->flag & (1L << cmd->device->channel))) { 1047 1048 printk(KERN_NOTICE 1049 "scsi%d: scanning scsi channel %d [P%d] ", 1050 adapter->host->host_no, 1051 cmd->device->channel, channel); 1052 printk("for physical devices.\n"); 1053 1054 adapter->flag |= (1L << cmd->device->channel); 1055 } 1056 /* Fall through */ 1057 default: 1058 epthru->numsgelements = mega_build_sglist(adapter, scb, 1059 &epthru->dataxferaddr, &epthru->dataxferlen); 1060 break; 1061 } 1062 1063 return epthru; 1064 } 1065 1066 static void 1067 __mega_runpendq(adapter_t *adapter) 1068 { 1069 scb_t *scb; 1070 struct list_head *pos, *next; 1071 1072 /* Issue any pending commands to the card */ 1073 list_for_each_safe(pos, next, &adapter->pending_list) { 1074 1075 scb = list_entry(pos, scb_t, list); 1076 1077 if( !(scb->state & SCB_ISSUED) ) { 1078 1079 if( issue_scb(adapter, scb) != 0 ) 1080 return; 1081 } 1082 } 1083 1084 return; 1085 } 1086 1087 1088 /** 1089 * issue_scb() 1090 * @adapter - pointer to our soft state 1091 * @scb - scsi control block 1092 * 1093 * Post a command to the card if the mailbox is available, otherwise return 1094 * busy. We also take the scb from the pending list if the mailbox is 1095 * available. 1096 */ 1097 static int 1098 issue_scb(adapter_t *adapter, scb_t *scb) 1099 { 1100 volatile mbox64_t *mbox64 = adapter->mbox64; 1101 volatile mbox_t *mbox = adapter->mbox; 1102 unsigned int i = 0; 1103 1104 if(unlikely(mbox->m_in.busy)) { 1105 do { 1106 udelay(1); 1107 i++; 1108 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1109 1110 if(mbox->m_in.busy) return -1; 1111 } 1112 1113 /* Copy mailbox data into host structure */ 1114 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1115 sizeof(struct mbox_out)); 1116 1117 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1118 mbox->m_in.busy = 1; /* Set busy */ 1119 1120 1121 /* 1122 * Increment the pending queue counter 1123 */ 1124 atomic_inc(&adapter->pend_cmds); 1125 1126 switch (mbox->m_out.cmd) { 1127 case MEGA_MBOXCMD_LREAD64: 1128 case MEGA_MBOXCMD_LWRITE64: 1129 case MEGA_MBOXCMD_PASSTHRU64: 1130 case MEGA_MBOXCMD_EXTPTHRU: 1131 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1132 mbox64->xfer_segment_hi = 0; 1133 mbox->m_out.xferaddr = 0xFFFFFFFF; 1134 break; 1135 default: 1136 mbox64->xfer_segment_lo = 0; 1137 mbox64->xfer_segment_hi = 0; 1138 } 1139 1140 /* 1141 * post the command 1142 */ 1143 scb->state |= SCB_ISSUED; 1144 1145 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1146 mbox->m_in.poll = 0; 1147 mbox->m_in.ack = 0; 1148 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1149 } 1150 else { 1151 irq_enable(adapter); 1152 issue_command(adapter); 1153 } 1154 1155 return 0; 1156 } 1157 1158 /* 1159 * Wait until the controller's mailbox is available 1160 */ 1161 static inline int 1162 mega_busywait_mbox (adapter_t *adapter) 1163 { 1164 if (adapter->mbox->m_in.busy) 1165 return __mega_busywait_mbox(adapter); 1166 return 0; 1167 } 1168 1169 /** 1170 * issue_scb_block() 1171 * @adapter - pointer to our soft state 1172 * @raw_mbox - the mailbox 1173 * 1174 * Issue a scb in synchronous and non-interrupt mode 1175 */ 1176 static int 1177 issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1178 { 1179 volatile mbox64_t *mbox64 = adapter->mbox64; 1180 volatile mbox_t *mbox = adapter->mbox; 1181 u8 byte; 1182 1183 /* Wait until mailbox is free */ 1184 if(mega_busywait_mbox (adapter)) 1185 goto bug_blocked_mailbox; 1186 1187 /* Copy mailbox data into host structure */ 1188 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1189 mbox->m_out.cmdid = 0xFE; 1190 mbox->m_in.busy = 1; 1191 1192 switch (raw_mbox[0]) { 1193 case MEGA_MBOXCMD_LREAD64: 1194 case MEGA_MBOXCMD_LWRITE64: 1195 case MEGA_MBOXCMD_PASSTHRU64: 1196 case MEGA_MBOXCMD_EXTPTHRU: 1197 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1198 mbox64->xfer_segment_hi = 0; 1199 mbox->m_out.xferaddr = 0xFFFFFFFF; 1200 break; 1201 default: 1202 mbox64->xfer_segment_lo = 0; 1203 mbox64->xfer_segment_hi = 0; 1204 } 1205 1206 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1207 mbox->m_in.poll = 0; 1208 mbox->m_in.ack = 0; 1209 mbox->m_in.numstatus = 0xFF; 1210 mbox->m_in.status = 0xFF; 1211 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1212 1213 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1214 cpu_relax(); 1215 1216 mbox->m_in.numstatus = 0xFF; 1217 1218 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1219 cpu_relax(); 1220 1221 mbox->m_in.poll = 0; 1222 mbox->m_in.ack = 0x77; 1223 1224 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1225 1226 while(RDINDOOR(adapter) & 0x2) 1227 cpu_relax(); 1228 } 1229 else { 1230 irq_disable(adapter); 1231 issue_command(adapter); 1232 1233 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1234 cpu_relax(); 1235 1236 set_irq_state(adapter, byte); 1237 irq_enable(adapter); 1238 irq_ack(adapter); 1239 } 1240 1241 return mbox->m_in.status; 1242 1243 bug_blocked_mailbox: 1244 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n"); 1245 udelay (1000); 1246 return -1; 1247 } 1248 1249 1250 /** 1251 * megaraid_isr_iomapped() 1252 * @irq - irq 1253 * @devp - pointer to our soft state 1254 * @regs - unused 1255 * 1256 * Interrupt service routine for io-mapped controllers. 1257 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1258 * and service the completed commands. 1259 */ 1260 static irqreturn_t 1261 megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs) 1262 { 1263 adapter_t *adapter = devp; 1264 unsigned long flags; 1265 u8 status; 1266 u8 nstatus; 1267 u8 completed[MAX_FIRMWARE_STATUS]; 1268 u8 byte; 1269 int handled = 0; 1270 1271 1272 /* 1273 * loop till F/W has more commands for us to complete. 1274 */ 1275 spin_lock_irqsave(&adapter->lock, flags); 1276 1277 do { 1278 /* Check if a valid interrupt is pending */ 1279 byte = irq_state(adapter); 1280 if( (byte & VALID_INTR_BYTE) == 0 ) { 1281 /* 1282 * No more pending commands 1283 */ 1284 goto out_unlock; 1285 } 1286 set_irq_state(adapter, byte); 1287 1288 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1289 == 0xFF) 1290 cpu_relax(); 1291 adapter->mbox->m_in.numstatus = 0xFF; 1292 1293 status = adapter->mbox->m_in.status; 1294 1295 /* 1296 * decrement the pending queue counter 1297 */ 1298 atomic_sub(nstatus, &adapter->pend_cmds); 1299 1300 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1301 nstatus); 1302 1303 /* Acknowledge interrupt */ 1304 irq_ack(adapter); 1305 1306 mega_cmd_done(adapter, completed, nstatus, status); 1307 1308 mega_rundoneq(adapter); 1309 1310 handled = 1; 1311 1312 /* Loop through any pending requests */ 1313 if(atomic_read(&adapter->quiescent) == 0) { 1314 mega_runpendq(adapter); 1315 } 1316 1317 } while(1); 1318 1319 out_unlock: 1320 1321 spin_unlock_irqrestore(&adapter->lock, flags); 1322 1323 return IRQ_RETVAL(handled); 1324 } 1325 1326 1327 /** 1328 * megaraid_isr_memmapped() 1329 * @irq - irq 1330 * @devp - pointer to our soft state 1331 * @regs - unused 1332 * 1333 * Interrupt service routine for memory-mapped controllers. 1334 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1335 * and service the completed commands. 1336 */ 1337 static irqreturn_t 1338 megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs) 1339 { 1340 adapter_t *adapter = devp; 1341 unsigned long flags; 1342 u8 status; 1343 u32 dword = 0; 1344 u8 nstatus; 1345 u8 completed[MAX_FIRMWARE_STATUS]; 1346 int handled = 0; 1347 1348 1349 /* 1350 * loop till F/W has more commands for us to complete. 1351 */ 1352 spin_lock_irqsave(&adapter->lock, flags); 1353 1354 do { 1355 /* Check if a valid interrupt is pending */ 1356 dword = RDOUTDOOR(adapter); 1357 if(dword != 0x10001234) { 1358 /* 1359 * No more pending commands 1360 */ 1361 goto out_unlock; 1362 } 1363 WROUTDOOR(adapter, 0x10001234); 1364 1365 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1366 == 0xFF) { 1367 cpu_relax(); 1368 } 1369 adapter->mbox->m_in.numstatus = 0xFF; 1370 1371 status = adapter->mbox->m_in.status; 1372 1373 /* 1374 * decrement the pending queue counter 1375 */ 1376 atomic_sub(nstatus, &adapter->pend_cmds); 1377 1378 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1379 nstatus); 1380 1381 /* Acknowledge interrupt */ 1382 WRINDOOR(adapter, 0x2); 1383 1384 handled = 1; 1385 1386 while( RDINDOOR(adapter) & 0x02 ) cpu_relax(); 1387 1388 mega_cmd_done(adapter, completed, nstatus, status); 1389 1390 mega_rundoneq(adapter); 1391 1392 /* Loop through any pending requests */ 1393 if(atomic_read(&adapter->quiescent) == 0) { 1394 mega_runpendq(adapter); 1395 } 1396 1397 } while(1); 1398 1399 out_unlock: 1400 1401 spin_unlock_irqrestore(&adapter->lock, flags); 1402 1403 return IRQ_RETVAL(handled); 1404 } 1405 /** 1406 * mega_cmd_done() 1407 * @adapter - pointer to our soft state 1408 * @completed - array of ids of completed commands 1409 * @nstatus - number of completed commands 1410 * @status - status of the last command completed 1411 * 1412 * Complete the comamnds and call the scsi mid-layer callback hooks. 1413 */ 1414 static void 1415 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1416 { 1417 mega_ext_passthru *epthru = NULL; 1418 struct scatterlist *sgl; 1419 Scsi_Cmnd *cmd = NULL; 1420 mega_passthru *pthru = NULL; 1421 mbox_t *mbox = NULL; 1422 u8 c; 1423 scb_t *scb; 1424 int islogical; 1425 int cmdid; 1426 int i; 1427 1428 /* 1429 * for all the commands completed, call the mid-layer callback routine 1430 * and free the scb. 1431 */ 1432 for( i = 0; i < nstatus; i++ ) { 1433 1434 cmdid = completed[i]; 1435 1436 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1437 scb = &adapter->int_scb; 1438 cmd = scb->cmd; 1439 mbox = (mbox_t *)scb->raw_mbox; 1440 1441 /* 1442 * Internal command interface do not fire the extended 1443 * passthru or 64-bit passthru 1444 */ 1445 pthru = scb->pthru; 1446 1447 } 1448 else { 1449 scb = &adapter->scb_list[cmdid]; 1450 1451 /* 1452 * Make sure f/w has completed a valid command 1453 */ 1454 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1455 printk(KERN_CRIT 1456 "megaraid: invalid command "); 1457 printk("Id %d, scb->state:%x, scsi cmd:%p\n", 1458 cmdid, scb->state, scb->cmd); 1459 1460 continue; 1461 } 1462 1463 /* 1464 * Was a abort issued for this command 1465 */ 1466 if( scb->state & SCB_ABORT ) { 1467 1468 printk(KERN_WARNING 1469 "megaraid: aborted cmd %lx[%x] complete.\n", 1470 scb->cmd->serial_number, scb->idx); 1471 1472 scb->cmd->result = (DID_ABORT << 16); 1473 1474 list_add_tail(SCSI_LIST(scb->cmd), 1475 &adapter->completed_list); 1476 1477 mega_free_scb(adapter, scb); 1478 1479 continue; 1480 } 1481 1482 /* 1483 * Was a reset issued for this command 1484 */ 1485 if( scb->state & SCB_RESET ) { 1486 1487 printk(KERN_WARNING 1488 "megaraid: reset cmd %lx[%x] complete.\n", 1489 scb->cmd->serial_number, scb->idx); 1490 1491 scb->cmd->result = (DID_RESET << 16); 1492 1493 list_add_tail(SCSI_LIST(scb->cmd), 1494 &adapter->completed_list); 1495 1496 mega_free_scb (adapter, scb); 1497 1498 continue; 1499 } 1500 1501 cmd = scb->cmd; 1502 pthru = scb->pthru; 1503 epthru = scb->epthru; 1504 mbox = (mbox_t *)scb->raw_mbox; 1505 1506 #if MEGA_HAVE_STATS 1507 { 1508 1509 int logdrv = mbox->m_out.logdrv; 1510 1511 islogical = adapter->logdrv_chan[cmd->channel]; 1512 /* 1513 * Maintain an error counter for the logical drive. 1514 * Some application like SNMP agent need such 1515 * statistics 1516 */ 1517 if( status && islogical && (cmd->cmnd[0] == READ_6 || 1518 cmd->cmnd[0] == READ_10 || 1519 cmd->cmnd[0] == READ_12)) { 1520 /* 1521 * Logical drive number increases by 0x80 when 1522 * a logical drive is deleted 1523 */ 1524 adapter->rd_errors[logdrv%0x80]++; 1525 } 1526 1527 if( status && islogical && (cmd->cmnd[0] == WRITE_6 || 1528 cmd->cmnd[0] == WRITE_10 || 1529 cmd->cmnd[0] == WRITE_12)) { 1530 /* 1531 * Logical drive number increases by 0x80 when 1532 * a logical drive is deleted 1533 */ 1534 adapter->wr_errors[logdrv%0x80]++; 1535 } 1536 1537 } 1538 #endif 1539 } 1540 1541 /* 1542 * Do not return the presence of hard disk on the channel so, 1543 * inquiry sent, and returned data==hard disk or removable 1544 * hard disk and not logical, request should return failure! - 1545 * PJ 1546 */ 1547 islogical = adapter->logdrv_chan[cmd->device->channel]; 1548 if( cmd->cmnd[0] == INQUIRY && !islogical ) { 1549 1550 if( cmd->use_sg ) { 1551 sgl = (struct scatterlist *) 1552 cmd->request_buffer; 1553 1554 if( sgl->page ) { 1555 c = *(unsigned char *) 1556 page_address((&sgl[0])->page) + 1557 (&sgl[0])->offset; 1558 } 1559 else { 1560 printk(KERN_WARNING 1561 "megaraid: invalid sg.\n"); 1562 c = 0; 1563 } 1564 } 1565 else { 1566 c = *(u8 *)cmd->request_buffer; 1567 } 1568 1569 if(IS_RAID_CH(adapter, cmd->device->channel) && 1570 ((c & 0x1F ) == TYPE_DISK)) { 1571 status = 0xF0; 1572 } 1573 } 1574 1575 /* clear result; otherwise, success returns corrupt value */ 1576 cmd->result = 0; 1577 1578 /* Convert MegaRAID status to Linux error code */ 1579 switch (status) { 1580 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1581 cmd->result |= (DID_OK << 16); 1582 break; 1583 1584 case 0x02: /* ERROR_ABORTED, i.e. 1585 SCSI_STATUS_CHECK_CONDITION */ 1586 1587 /* set sense_buffer and result fields */ 1588 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1589 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1590 1591 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1592 14); 1593 1594 cmd->result = (DRIVER_SENSE << 24) | 1595 (DID_OK << 16) | 1596 (CHECK_CONDITION << 1); 1597 } 1598 else { 1599 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1600 1601 memcpy(cmd->sense_buffer, 1602 epthru->reqsensearea, 14); 1603 1604 cmd->result = (DRIVER_SENSE << 24) | 1605 (DID_OK << 16) | 1606 (CHECK_CONDITION << 1); 1607 } else { 1608 cmd->sense_buffer[0] = 0x70; 1609 cmd->sense_buffer[2] = ABORTED_COMMAND; 1610 cmd->result |= (CHECK_CONDITION << 1); 1611 } 1612 } 1613 break; 1614 1615 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1616 SCSI_STATUS_BUSY */ 1617 cmd->result |= (DID_BUS_BUSY << 16) | status; 1618 break; 1619 1620 default: 1621 #if MEGA_HAVE_CLUSTERING 1622 /* 1623 * If TEST_UNIT_READY fails, we know 1624 * MEGA_RESERVATION_STATUS failed 1625 */ 1626 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1627 cmd->result |= (DID_ERROR << 16) | 1628 (RESERVATION_CONFLICT << 1); 1629 } 1630 else 1631 /* 1632 * Error code returned is 1 if Reserve or Release 1633 * failed or the input parameter is invalid 1634 */ 1635 if( status == 1 && 1636 (cmd->cmnd[0] == RESERVE || 1637 cmd->cmnd[0] == RELEASE) ) { 1638 1639 cmd->result |= (DID_ERROR << 16) | 1640 (RESERVATION_CONFLICT << 1); 1641 } 1642 else 1643 #endif 1644 cmd->result |= (DID_BAD_TARGET << 16)|status; 1645 } 1646 1647 /* 1648 * Only free SCBs for the commands coming down from the 1649 * mid-layer, not for which were issued internally 1650 * 1651 * For internal command, restore the status returned by the 1652 * firmware so that user can interpret it. 1653 */ 1654 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1655 cmd->result = status; 1656 1657 /* 1658 * Remove the internal command from the pending list 1659 */ 1660 list_del_init(&scb->list); 1661 scb->state = SCB_FREE; 1662 } 1663 else { 1664 mega_free_scb(adapter, scb); 1665 } 1666 1667 /* Add Scsi_Command to end of completed queue */ 1668 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1669 } 1670 } 1671 1672 1673 /* 1674 * mega_runpendq() 1675 * 1676 * Run through the list of completed requests and finish it 1677 */ 1678 static void 1679 mega_rundoneq (adapter_t *adapter) 1680 { 1681 Scsi_Cmnd *cmd; 1682 struct list_head *pos; 1683 1684 list_for_each(pos, &adapter->completed_list) { 1685 1686 Scsi_Pointer* spos = (Scsi_Pointer *)pos; 1687 1688 cmd = list_entry(spos, Scsi_Cmnd, SCp); 1689 cmd->scsi_done(cmd); 1690 } 1691 1692 INIT_LIST_HEAD(&adapter->completed_list); 1693 } 1694 1695 1696 /* 1697 * Free a SCB structure 1698 * Note: We assume the scsi commands associated with this scb is not free yet. 1699 */ 1700 static void 1701 mega_free_scb(adapter_t *adapter, scb_t *scb) 1702 { 1703 unsigned long length; 1704 1705 switch( scb->dma_type ) { 1706 1707 case MEGA_DMA_TYPE_NONE: 1708 break; 1709 1710 case MEGA_BULK_DATA: 1711 if (scb->cmd->use_sg == 0) 1712 length = scb->cmd->request_bufflen; 1713 else { 1714 struct scatterlist *sgl = 1715 (struct scatterlist *)scb->cmd->request_buffer; 1716 length = sgl->length; 1717 } 1718 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata, 1719 length, scb->dma_direction); 1720 break; 1721 1722 case MEGA_SGLIST: 1723 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer, 1724 scb->cmd->use_sg, scb->dma_direction); 1725 break; 1726 1727 default: 1728 break; 1729 } 1730 1731 /* 1732 * Remove from the pending list 1733 */ 1734 list_del_init(&scb->list); 1735 1736 /* Link the scb back into free list */ 1737 scb->state = SCB_FREE; 1738 scb->cmd = NULL; 1739 1740 list_add(&scb->list, &adapter->free_list); 1741 } 1742 1743 1744 static int 1745 __mega_busywait_mbox (adapter_t *adapter) 1746 { 1747 volatile mbox_t *mbox = adapter->mbox; 1748 long counter; 1749 1750 for (counter = 0; counter < 10000; counter++) { 1751 if (!mbox->m_in.busy) 1752 return 0; 1753 udelay(100); yield(); 1754 } 1755 return -1; /* give up after 1 second */ 1756 } 1757 1758 /* 1759 * Copies data to SGLIST 1760 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1761 */ 1762 static int 1763 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1764 { 1765 struct scatterlist *sgl; 1766 struct page *page; 1767 unsigned long offset; 1768 unsigned int length; 1769 Scsi_Cmnd *cmd; 1770 int sgcnt; 1771 int idx; 1772 1773 cmd = scb->cmd; 1774 1775 /* Scatter-gather not used */ 1776 if( cmd->use_sg == 0 || (cmd->use_sg == 1 && 1777 !adapter->has_64bit_addr)) { 1778 1779 if (cmd->use_sg == 0) { 1780 page = virt_to_page(cmd->request_buffer); 1781 offset = offset_in_page(cmd->request_buffer); 1782 length = cmd->request_bufflen; 1783 } else { 1784 sgl = (struct scatterlist *)cmd->request_buffer; 1785 page = sgl->page; 1786 offset = sgl->offset; 1787 length = sgl->length; 1788 } 1789 1790 scb->dma_h_bulkdata = pci_map_page(adapter->dev, 1791 page, offset, 1792 length, 1793 scb->dma_direction); 1794 scb->dma_type = MEGA_BULK_DATA; 1795 1796 /* 1797 * We need to handle special 64-bit commands that need a 1798 * minimum of 1 SG 1799 */ 1800 if( adapter->has_64bit_addr ) { 1801 scb->sgl64[0].address = scb->dma_h_bulkdata; 1802 scb->sgl64[0].length = length; 1803 *buf = (u32)scb->sgl_dma_addr; 1804 *len = (u32)length; 1805 return 1; 1806 } 1807 else { 1808 *buf = (u32)scb->dma_h_bulkdata; 1809 *len = (u32)length; 1810 } 1811 return 0; 1812 } 1813 1814 sgl = (struct scatterlist *)cmd->request_buffer; 1815 1816 /* 1817 * Copy Scatter-Gather list info into controller structure. 1818 * 1819 * The number of sg elements returned must not exceed our limit 1820 */ 1821 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg, 1822 scb->dma_direction); 1823 1824 scb->dma_type = MEGA_SGLIST; 1825 1826 if( sgcnt > adapter->sglen ) BUG(); 1827 1828 *len = 0; 1829 1830 for( idx = 0; idx < sgcnt; idx++, sgl++ ) { 1831 1832 if( adapter->has_64bit_addr ) { 1833 scb->sgl64[idx].address = sg_dma_address(sgl); 1834 *len += scb->sgl64[idx].length = sg_dma_len(sgl); 1835 } 1836 else { 1837 scb->sgl[idx].address = sg_dma_address(sgl); 1838 *len += scb->sgl[idx].length = sg_dma_len(sgl); 1839 } 1840 } 1841 1842 /* Reset pointer and length fields */ 1843 *buf = scb->sgl_dma_addr; 1844 1845 /* Return count of SG requests */ 1846 return sgcnt; 1847 } 1848 1849 1850 /* 1851 * mega_8_to_40ld() 1852 * 1853 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1854 * Enquiry3 structures for later use 1855 */ 1856 static void 1857 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1858 mega_product_info *product_info) 1859 { 1860 int i; 1861 1862 product_info->max_commands = inquiry->adapter_info.max_commands; 1863 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1864 product_info->nchannels = inquiry->adapter_info.nchannels; 1865 1866 for (i = 0; i < 4; i++) { 1867 product_info->fw_version[i] = 1868 inquiry->adapter_info.fw_version[i]; 1869 1870 product_info->bios_version[i] = 1871 inquiry->adapter_info.bios_version[i]; 1872 } 1873 enquiry3->cache_flush_interval = 1874 inquiry->adapter_info.cache_flush_interval; 1875 1876 product_info->dram_size = inquiry->adapter_info.dram_size; 1877 1878 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1879 1880 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1881 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1882 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1883 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1884 } 1885 1886 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1887 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1888 } 1889 1890 static inline void 1891 mega_free_sgl(adapter_t *adapter) 1892 { 1893 scb_t *scb; 1894 int i; 1895 1896 for(i = 0; i < adapter->max_cmds; i++) { 1897 1898 scb = &adapter->scb_list[i]; 1899 1900 if( scb->sgl64 ) { 1901 pci_free_consistent(adapter->dev, 1902 sizeof(mega_sgl64) * adapter->sglen, 1903 scb->sgl64, 1904 scb->sgl_dma_addr); 1905 1906 scb->sgl64 = NULL; 1907 } 1908 1909 if( scb->pthru ) { 1910 pci_free_consistent(adapter->dev, sizeof(mega_passthru), 1911 scb->pthru, scb->pthru_dma_addr); 1912 1913 scb->pthru = NULL; 1914 } 1915 1916 if( scb->epthru ) { 1917 pci_free_consistent(adapter->dev, 1918 sizeof(mega_ext_passthru), 1919 scb->epthru, scb->epthru_dma_addr); 1920 1921 scb->epthru = NULL; 1922 } 1923 1924 } 1925 } 1926 1927 1928 /* 1929 * Get information about the card/driver 1930 */ 1931 const char * 1932 megaraid_info(struct Scsi_Host *host) 1933 { 1934 static char buffer[512]; 1935 adapter_t *adapter; 1936 1937 adapter = (adapter_t *)host->hostdata; 1938 1939 sprintf (buffer, 1940 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1941 adapter->fw_version, adapter->product_info.max_commands, 1942 adapter->host->max_id, adapter->host->max_channel, 1943 adapter->host->max_lun); 1944 return buffer; 1945 } 1946 1947 /* 1948 * Abort a previous SCSI request. Only commands on the pending list can be 1949 * aborted. All the commands issued to the F/W must complete. 1950 */ 1951 static int 1952 megaraid_abort(Scsi_Cmnd *cmd) 1953 { 1954 adapter_t *adapter; 1955 int rval; 1956 1957 adapter = (adapter_t *)cmd->device->host->hostdata; 1958 1959 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1960 1961 /* 1962 * This is required here to complete any completed requests 1963 * to be communicated over to the mid layer. 1964 */ 1965 mega_rundoneq(adapter); 1966 1967 return rval; 1968 } 1969 1970 1971 static int 1972 megaraid_reset(struct scsi_cmnd *cmd) 1973 { 1974 adapter_t *adapter; 1975 megacmd_t mc; 1976 int rval; 1977 1978 adapter = (adapter_t *)cmd->device->host->hostdata; 1979 1980 #if MEGA_HAVE_CLUSTERING 1981 mc.cmd = MEGA_CLUSTER_CMD; 1982 mc.opcode = MEGA_RESET_RESERVATIONS; 1983 1984 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) { 1985 printk(KERN_WARNING 1986 "megaraid: reservation reset failed.\n"); 1987 } 1988 else { 1989 printk(KERN_INFO "megaraid: reservation reset.\n"); 1990 } 1991 #endif 1992 1993 spin_lock_irq(&adapter->lock); 1994 1995 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 1996 1997 /* 1998 * This is required here to complete any completed requests 1999 * to be communicated over to the mid layer. 2000 */ 2001 mega_rundoneq(adapter); 2002 spin_unlock_irq(&adapter->lock); 2003 2004 return rval; 2005 } 2006 2007 /** 2008 * megaraid_abort_and_reset() 2009 * @adapter - megaraid soft state 2010 * @cmd - scsi command to be aborted or reset 2011 * @aor - abort or reset flag 2012 * 2013 * Try to locate the scsi command in the pending queue. If found and is not 2014 * issued to the controller, abort/reset it. Otherwise return failure 2015 */ 2016 static int 2017 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor) 2018 { 2019 struct list_head *pos, *next; 2020 scb_t *scb; 2021 2022 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n", 2023 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number, 2024 cmd->cmnd[0], cmd->device->channel, 2025 cmd->device->id, cmd->device->lun); 2026 2027 if(list_empty(&adapter->pending_list)) 2028 return FALSE; 2029 2030 list_for_each_safe(pos, next, &adapter->pending_list) { 2031 2032 scb = list_entry(pos, scb_t, list); 2033 2034 if (scb->cmd == cmd) { /* Found command */ 2035 2036 scb->state |= aor; 2037 2038 /* 2039 * Check if this command has firmare owenership. If 2040 * yes, we cannot reset this command. Whenever, f/w 2041 * completes this command, we will return appropriate 2042 * status from ISR. 2043 */ 2044 if( scb->state & SCB_ISSUED ) { 2045 2046 printk(KERN_WARNING 2047 "megaraid: %s-%lx[%x], fw owner.\n", 2048 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2049 cmd->serial_number, scb->idx); 2050 2051 return FALSE; 2052 } 2053 else { 2054 2055 /* 2056 * Not yet issued! Remove from the pending 2057 * list 2058 */ 2059 printk(KERN_WARNING 2060 "megaraid: %s-%lx[%x], driver owner.\n", 2061 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2062 cmd->serial_number, scb->idx); 2063 2064 mega_free_scb(adapter, scb); 2065 2066 if( aor == SCB_ABORT ) { 2067 cmd->result = (DID_ABORT << 16); 2068 } 2069 else { 2070 cmd->result = (DID_RESET << 16); 2071 } 2072 2073 list_add_tail(SCSI_LIST(cmd), 2074 &adapter->completed_list); 2075 2076 return TRUE; 2077 } 2078 } 2079 } 2080 2081 return FALSE; 2082 } 2083 2084 static inline int 2085 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2086 { 2087 *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL); 2088 2089 if( *pdev == NULL ) return -1; 2090 2091 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2092 2093 if( pci_set_dma_mask(*pdev, 0xffffffff) != 0 ) { 2094 kfree(*pdev); 2095 return -1; 2096 } 2097 2098 return 0; 2099 } 2100 2101 static inline void 2102 free_local_pdev(struct pci_dev *pdev) 2103 { 2104 kfree(pdev); 2105 } 2106 2107 /** 2108 * mega_allocate_inquiry() 2109 * @dma_handle - handle returned for dma address 2110 * @pdev - handle to pci device 2111 * 2112 * allocates memory for inquiry structure 2113 */ 2114 static inline void * 2115 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2116 { 2117 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2118 } 2119 2120 2121 static inline void 2122 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2123 { 2124 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2125 } 2126 2127 2128 #ifdef CONFIG_PROC_FS 2129 /* Following code handles /proc fs */ 2130 2131 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \ 2132 S_IRUSR | S_IFREG, \ 2133 controller_proc_dir_entry, \ 2134 func, adapter) 2135 2136 /** 2137 * mega_create_proc_entry() 2138 * @index - index in soft state array 2139 * @parent - parent node for this /proc entry 2140 * 2141 * Creates /proc entries for our controllers. 2142 */ 2143 static void 2144 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2145 { 2146 struct proc_dir_entry *controller_proc_dir_entry = NULL; 2147 u8 string[64] = { 0 }; 2148 adapter_t *adapter = hba_soft_state[index]; 2149 2150 sprintf(string, "hba%d", adapter->host->host_no); 2151 2152 controller_proc_dir_entry = 2153 adapter->controller_proc_dir_entry = proc_mkdir(string, parent); 2154 2155 if(!controller_proc_dir_entry) { 2156 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n"); 2157 return; 2158 } 2159 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config); 2160 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat); 2161 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox); 2162 #if MEGA_HAVE_ENH_PROC 2163 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate); 2164 adapter->proc_battery = CREATE_READ_PROC("battery-status", 2165 proc_battery); 2166 2167 /* 2168 * Display each physical drive on its channel 2169 */ 2170 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0", 2171 proc_pdrv_ch0); 2172 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1", 2173 proc_pdrv_ch1); 2174 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2", 2175 proc_pdrv_ch2); 2176 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3", 2177 proc_pdrv_ch3); 2178 2179 /* 2180 * Display a set of up to 10 logical drive through each of following 2181 * /proc entries 2182 */ 2183 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9", 2184 proc_rdrv_10); 2185 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19", 2186 proc_rdrv_20); 2187 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29", 2188 proc_rdrv_30); 2189 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39", 2190 proc_rdrv_40); 2191 #endif 2192 } 2193 2194 2195 /** 2196 * proc_read_config() 2197 * @page - buffer to write the data in 2198 * @start - where the actual data has been written in page 2199 * @offset - same meaning as the read system call 2200 * @count - same meaning as the read system call 2201 * @eof - set if no more data needs to be returned 2202 * @data - pointer to our soft state 2203 * 2204 * Display configuration information about the controller. 2205 */ 2206 static int 2207 proc_read_config(char *page, char **start, off_t offset, int count, int *eof, 2208 void *data) 2209 { 2210 2211 adapter_t *adapter = (adapter_t *)data; 2212 int len = 0; 2213 2214 len += sprintf(page+len, "%s", MEGARAID_VERSION); 2215 2216 if(adapter->product_info.product_name[0]) 2217 len += sprintf(page+len, "%s\n", 2218 adapter->product_info.product_name); 2219 2220 len += sprintf(page+len, "Controller Type: "); 2221 2222 if( adapter->flag & BOARD_MEMMAP ) { 2223 len += sprintf(page+len, 2224 "438/466/467/471/493/518/520/531/532\n"); 2225 } 2226 else { 2227 len += sprintf(page+len, 2228 "418/428/434\n"); 2229 } 2230 2231 if(adapter->flag & BOARD_40LD) { 2232 len += sprintf(page+len, 2233 "Controller Supports 40 Logical Drives\n"); 2234 } 2235 2236 if(adapter->flag & BOARD_64BIT) { 2237 len += sprintf(page+len, 2238 "Controller capable of 64-bit memory addressing\n"); 2239 } 2240 if( adapter->has_64bit_addr ) { 2241 len += sprintf(page+len, 2242 "Controller using 64-bit memory addressing\n"); 2243 } 2244 else { 2245 len += sprintf(page+len, 2246 "Controller is not using 64-bit memory addressing\n"); 2247 } 2248 2249 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base, 2250 adapter->host->irq); 2251 2252 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n", 2253 adapter->numldrv, adapter->product_info.nchannels); 2254 2255 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n", 2256 adapter->fw_version, adapter->bios_version, 2257 adapter->product_info.dram_size); 2258 2259 len += sprintf(page+len, 2260 "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2261 adapter->product_info.max_commands, adapter->max_cmds); 2262 2263 len += sprintf(page+len, "support_ext_cdb = %d\n", 2264 adapter->support_ext_cdb); 2265 len += sprintf(page+len, "support_random_del = %d\n", 2266 adapter->support_random_del); 2267 len += sprintf(page+len, "boot_ldrv_enabled = %d\n", 2268 adapter->boot_ldrv_enabled); 2269 len += sprintf(page+len, "boot_ldrv = %d\n", 2270 adapter->boot_ldrv); 2271 len += sprintf(page+len, "boot_pdrv_enabled = %d\n", 2272 adapter->boot_pdrv_enabled); 2273 len += sprintf(page+len, "boot_pdrv_ch = %d\n", 2274 adapter->boot_pdrv_ch); 2275 len += sprintf(page+len, "boot_pdrv_tgt = %d\n", 2276 adapter->boot_pdrv_tgt); 2277 len += sprintf(page+len, "quiescent = %d\n", 2278 atomic_read(&adapter->quiescent)); 2279 len += sprintf(page+len, "has_cluster = %d\n", 2280 adapter->has_cluster); 2281 2282 len += sprintf(page+len, "\nModule Parameters:\n"); 2283 len += sprintf(page+len, "max_cmd_per_lun = %d\n", 2284 max_cmd_per_lun); 2285 len += sprintf(page+len, "max_sectors_per_io = %d\n", 2286 max_sectors_per_io); 2287 2288 *eof = 1; 2289 2290 return len; 2291 } 2292 2293 2294 2295 /** 2296 * proc_read_stat() 2297 * @page - buffer to write the data in 2298 * @start - where the actual data has been written in page 2299 * @offset - same meaning as the read system call 2300 * @count - same meaning as the read system call 2301 * @eof - set if no more data needs to be returned 2302 * @data - pointer to our soft state 2303 * 2304 * Diaplay statistical information about the I/O activity. 2305 */ 2306 static int 2307 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof, 2308 void *data) 2309 { 2310 adapter_t *adapter; 2311 int len; 2312 int i; 2313 2314 i = 0; /* avoid compilation warnings */ 2315 len = 0; 2316 adapter = (adapter_t *)data; 2317 2318 len = sprintf(page, "Statistical Information for this controller\n"); 2319 len += sprintf(page+len, "pend_cmds = %d\n", 2320 atomic_read(&adapter->pend_cmds)); 2321 #if MEGA_HAVE_STATS 2322 for(i = 0; i < adapter->numldrv; i++) { 2323 len += sprintf(page+len, "Logical Drive %d:\n", i); 2324 2325 len += sprintf(page+len, 2326 "\tReads Issued = %lu, Writes Issued = %lu\n", 2327 adapter->nreads[i], adapter->nwrites[i]); 2328 2329 len += sprintf(page+len, 2330 "\tSectors Read = %lu, Sectors Written = %lu\n", 2331 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2332 2333 len += sprintf(page+len, 2334 "\tRead errors = %lu, Write errors = %lu\n\n", 2335 adapter->rd_errors[i], adapter->wr_errors[i]); 2336 } 2337 #else 2338 len += sprintf(page+len, 2339 "IO and error counters not compiled in driver.\n"); 2340 #endif 2341 2342 *eof = 1; 2343 2344 return len; 2345 } 2346 2347 2348 /** 2349 * proc_read_mbox() 2350 * @page - buffer to write the data in 2351 * @start - where the actual data has been written in page 2352 * @offset - same meaning as the read system call 2353 * @count - same meaning as the read system call 2354 * @eof - set if no more data needs to be returned 2355 * @data - pointer to our soft state 2356 * 2357 * Display mailbox information for the last command issued. This information 2358 * is good for debugging. 2359 */ 2360 static int 2361 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof, 2362 void *data) 2363 { 2364 2365 adapter_t *adapter = (adapter_t *)data; 2366 volatile mbox_t *mbox = adapter->mbox; 2367 int len = 0; 2368 2369 len = sprintf(page, "Contents of Mail Box Structure\n"); 2370 len += sprintf(page+len, " Fw Command = 0x%02x\n", 2371 mbox->m_out.cmd); 2372 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n", 2373 mbox->m_out.cmdid); 2374 len += sprintf(page+len, " No of Sectors= %04d\n", 2375 mbox->m_out.numsectors); 2376 len += sprintf(page+len, " LBA = 0x%02x\n", 2377 mbox->m_out.lba); 2378 len += sprintf(page+len, " DTA = 0x%08x\n", 2379 mbox->m_out.xferaddr); 2380 len += sprintf(page+len, " Logical Drive= 0x%02x\n", 2381 mbox->m_out.logdrv); 2382 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n", 2383 mbox->m_out.numsgelements); 2384 len += sprintf(page+len, " Busy = %01x\n", 2385 mbox->m_in.busy); 2386 len += sprintf(page+len, " Status = 0x%02x\n", 2387 mbox->m_in.status); 2388 2389 *eof = 1; 2390 2391 return len; 2392 } 2393 2394 2395 /** 2396 * proc_rebuild_rate() 2397 * @page - buffer to write the data in 2398 * @start - where the actual data has been written in page 2399 * @offset - same meaning as the read system call 2400 * @count - same meaning as the read system call 2401 * @eof - set if no more data needs to be returned 2402 * @data - pointer to our soft state 2403 * 2404 * Display current rebuild rate 2405 */ 2406 static int 2407 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof, 2408 void *data) 2409 { 2410 adapter_t *adapter = (adapter_t *)data; 2411 dma_addr_t dma_handle; 2412 caddr_t inquiry; 2413 struct pci_dev *pdev; 2414 int len = 0; 2415 2416 if( make_local_pdev(adapter, &pdev) != 0 ) { 2417 *eof = 1; 2418 return len; 2419 } 2420 2421 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2422 free_local_pdev(pdev); 2423 *eof = 1; 2424 return len; 2425 } 2426 2427 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2428 2429 len = sprintf(page, "Adapter inquiry failed.\n"); 2430 2431 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2432 2433 mega_free_inquiry(inquiry, dma_handle, pdev); 2434 2435 free_local_pdev(pdev); 2436 2437 *eof = 1; 2438 2439 return len; 2440 } 2441 2442 if( adapter->flag & BOARD_40LD ) { 2443 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2444 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2445 } 2446 else { 2447 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2448 ((mraid_ext_inquiry *) 2449 inquiry)->raid_inq.adapter_info.rebuild_rate); 2450 } 2451 2452 2453 mega_free_inquiry(inquiry, dma_handle, pdev); 2454 2455 free_local_pdev(pdev); 2456 2457 *eof = 1; 2458 2459 return len; 2460 } 2461 2462 2463 /** 2464 * proc_battery() 2465 * @page - buffer to write the data in 2466 * @start - where the actual data has been written in page 2467 * @offset - same meaning as the read system call 2468 * @count - same meaning as the read system call 2469 * @eof - set if no more data needs to be returned 2470 * @data - pointer to our soft state 2471 * 2472 * Display information about the battery module on the controller. 2473 */ 2474 static int 2475 proc_battery(char *page, char **start, off_t offset, int count, int *eof, 2476 void *data) 2477 { 2478 adapter_t *adapter = (adapter_t *)data; 2479 dma_addr_t dma_handle; 2480 caddr_t inquiry; 2481 struct pci_dev *pdev; 2482 u8 battery_status = 0; 2483 char str[256]; 2484 int len = 0; 2485 2486 if( make_local_pdev(adapter, &pdev) != 0 ) { 2487 *eof = 1; 2488 return len; 2489 } 2490 2491 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2492 free_local_pdev(pdev); 2493 *eof = 1; 2494 return len; 2495 } 2496 2497 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2498 2499 len = sprintf(page, "Adapter inquiry failed.\n"); 2500 2501 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2502 2503 mega_free_inquiry(inquiry, dma_handle, pdev); 2504 2505 free_local_pdev(pdev); 2506 2507 *eof = 1; 2508 2509 return len; 2510 } 2511 2512 if( adapter->flag & BOARD_40LD ) { 2513 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2514 } 2515 else { 2516 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2517 raid_inq.adapter_info.battery_status; 2518 } 2519 2520 /* 2521 * Decode the battery status 2522 */ 2523 sprintf(str, "Battery Status:[%d]", battery_status); 2524 2525 if(battery_status == MEGA_BATT_CHARGE_DONE) 2526 strcat(str, " Charge Done"); 2527 2528 if(battery_status & MEGA_BATT_MODULE_MISSING) 2529 strcat(str, " Module Missing"); 2530 2531 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2532 strcat(str, " Low Voltage"); 2533 2534 if(battery_status & MEGA_BATT_TEMP_HIGH) 2535 strcat(str, " Temperature High"); 2536 2537 if(battery_status & MEGA_BATT_PACK_MISSING) 2538 strcat(str, " Pack Missing"); 2539 2540 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2541 strcat(str, " Charge In-progress"); 2542 2543 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2544 strcat(str, " Charge Fail"); 2545 2546 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2547 strcat(str, " Cycles Exceeded"); 2548 2549 len = sprintf(page, "%s\n", str); 2550 2551 2552 mega_free_inquiry(inquiry, dma_handle, pdev); 2553 2554 free_local_pdev(pdev); 2555 2556 *eof = 1; 2557 2558 return len; 2559 } 2560 2561 2562 /** 2563 * proc_pdrv_ch0() 2564 * @page - buffer to write the data in 2565 * @start - where the actual data has been written in page 2566 * @offset - same meaning as the read system call 2567 * @count - same meaning as the read system call 2568 * @eof - set if no more data needs to be returned 2569 * @data - pointer to our soft state 2570 * 2571 * Display information about the physical drives on physical channel 0. 2572 */ 2573 static int 2574 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof, 2575 void *data) 2576 { 2577 adapter_t *adapter = (adapter_t *)data; 2578 2579 *eof = 1; 2580 2581 return (proc_pdrv(adapter, page, 0)); 2582 } 2583 2584 2585 /** 2586 * proc_pdrv_ch1() 2587 * @page - buffer to write the data in 2588 * @start - where the actual data has been written in page 2589 * @offset - same meaning as the read system call 2590 * @count - same meaning as the read system call 2591 * @eof - set if no more data needs to be returned 2592 * @data - pointer to our soft state 2593 * 2594 * Display information about the physical drives on physical channel 1. 2595 */ 2596 static int 2597 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof, 2598 void *data) 2599 { 2600 adapter_t *adapter = (adapter_t *)data; 2601 2602 *eof = 1; 2603 2604 return (proc_pdrv(adapter, page, 1)); 2605 } 2606 2607 2608 /** 2609 * proc_pdrv_ch2() 2610 * @page - buffer to write the data in 2611 * @start - where the actual data has been written in page 2612 * @offset - same meaning as the read system call 2613 * @count - same meaning as the read system call 2614 * @eof - set if no more data needs to be returned 2615 * @data - pointer to our soft state 2616 * 2617 * Display information about the physical drives on physical channel 2. 2618 */ 2619 static int 2620 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof, 2621 void *data) 2622 { 2623 adapter_t *adapter = (adapter_t *)data; 2624 2625 *eof = 1; 2626 2627 return (proc_pdrv(adapter, page, 2)); 2628 } 2629 2630 2631 /** 2632 * proc_pdrv_ch3() 2633 * @page - buffer to write the data in 2634 * @start - where the actual data has been written in page 2635 * @offset - same meaning as the read system call 2636 * @count - same meaning as the read system call 2637 * @eof - set if no more data needs to be returned 2638 * @data - pointer to our soft state 2639 * 2640 * Display information about the physical drives on physical channel 3. 2641 */ 2642 static int 2643 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof, 2644 void *data) 2645 { 2646 adapter_t *adapter = (adapter_t *)data; 2647 2648 *eof = 1; 2649 2650 return (proc_pdrv(adapter, page, 3)); 2651 } 2652 2653 2654 /** 2655 * proc_pdrv() 2656 * @page - buffer to write the data in 2657 * @adapter - pointer to our soft state 2658 * 2659 * Display information about the physical drives. 2660 */ 2661 static int 2662 proc_pdrv(adapter_t *adapter, char *page, int channel) 2663 { 2664 dma_addr_t dma_handle; 2665 char *scsi_inq; 2666 dma_addr_t scsi_inq_dma_handle; 2667 caddr_t inquiry; 2668 struct pci_dev *pdev; 2669 u8 *pdrv_state; 2670 u8 state; 2671 int tgt; 2672 int max_channels; 2673 int len = 0; 2674 char str[80]; 2675 int i; 2676 2677 if( make_local_pdev(adapter, &pdev) != 0 ) { 2678 return len; 2679 } 2680 2681 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2682 goto free_pdev; 2683 } 2684 2685 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2686 len = sprintf(page, "Adapter inquiry failed.\n"); 2687 2688 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2689 2690 goto free_inquiry; 2691 } 2692 2693 2694 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2695 2696 if( scsi_inq == NULL ) { 2697 len = sprintf(page, "memory not available for scsi inq.\n"); 2698 2699 goto free_inquiry; 2700 } 2701 2702 if( adapter->flag & BOARD_40LD ) { 2703 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2704 } 2705 else { 2706 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2707 raid_inq.pdrv_info.pdrv_state; 2708 } 2709 2710 max_channels = adapter->product_info.nchannels; 2711 2712 if( channel >= max_channels ) { 2713 goto free_pci; 2714 } 2715 2716 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2717 2718 i = channel*16 + tgt; 2719 2720 state = *(pdrv_state + i); 2721 2722 switch( state & 0x0F ) { 2723 2724 case PDRV_ONLINE: 2725 sprintf(str, 2726 "Channel:%2d Id:%2d State: Online", 2727 channel, tgt); 2728 break; 2729 2730 case PDRV_FAILED: 2731 sprintf(str, 2732 "Channel:%2d Id:%2d State: Failed", 2733 channel, tgt); 2734 break; 2735 2736 case PDRV_RBLD: 2737 sprintf(str, 2738 "Channel:%2d Id:%2d State: Rebuild", 2739 channel, tgt); 2740 break; 2741 2742 case PDRV_HOTSPARE: 2743 sprintf(str, 2744 "Channel:%2d Id:%2d State: Hot spare", 2745 channel, tgt); 2746 break; 2747 2748 default: 2749 sprintf(str, 2750 "Channel:%2d Id:%2d State: Un-configured", 2751 channel, tgt); 2752 break; 2753 2754 } 2755 2756 /* 2757 * This interface displays inquiries for disk drives 2758 * only. Inquries for logical drives and non-disk 2759 * devices are available through /proc/scsi/scsi 2760 */ 2761 memset(scsi_inq, 0, 256); 2762 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2763 scsi_inq_dma_handle) || 2764 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2765 continue; 2766 } 2767 2768 /* 2769 * Check for overflow. We print less than 240 2770 * characters for inquiry 2771 */ 2772 if( (len + 240) >= PAGE_SIZE ) break; 2773 2774 len += sprintf(page+len, "%s.\n", str); 2775 2776 len += mega_print_inquiry(page+len, scsi_inq); 2777 } 2778 2779 free_pci: 2780 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2781 free_inquiry: 2782 mega_free_inquiry(inquiry, dma_handle, pdev); 2783 free_pdev: 2784 free_local_pdev(pdev); 2785 2786 return len; 2787 } 2788 2789 2790 /* 2791 * Display scsi inquiry 2792 */ 2793 static int 2794 mega_print_inquiry(char *page, char *scsi_inq) 2795 { 2796 int len = 0; 2797 int i; 2798 2799 len = sprintf(page, " Vendor: "); 2800 for( i = 8; i < 16; i++ ) { 2801 len += sprintf(page+len, "%c", scsi_inq[i]); 2802 } 2803 2804 len += sprintf(page+len, " Model: "); 2805 2806 for( i = 16; i < 32; i++ ) { 2807 len += sprintf(page+len, "%c", scsi_inq[i]); 2808 } 2809 2810 len += sprintf(page+len, " Rev: "); 2811 2812 for( i = 32; i < 36; i++ ) { 2813 len += sprintf(page+len, "%c", scsi_inq[i]); 2814 } 2815 2816 len += sprintf(page+len, "\n"); 2817 2818 i = scsi_inq[0] & 0x1f; 2819 2820 len += sprintf(page+len, " Type: %s ", 2821 i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] : 2822 "Unknown "); 2823 2824 len += sprintf(page+len, 2825 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07); 2826 2827 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2828 len += sprintf(page+len, " CCS\n"); 2829 else 2830 len += sprintf(page+len, "\n"); 2831 2832 return len; 2833 } 2834 2835 2836 /** 2837 * proc_rdrv_10() 2838 * @page - buffer to write the data in 2839 * @start - where the actual data has been written in page 2840 * @offset - same meaning as the read system call 2841 * @count - same meaning as the read system call 2842 * @eof - set if no more data needs to be returned 2843 * @data - pointer to our soft state 2844 * 2845 * Display real time information about the logical drives 0 through 9. 2846 */ 2847 static int 2848 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof, 2849 void *data) 2850 { 2851 adapter_t *adapter = (adapter_t *)data; 2852 2853 *eof = 1; 2854 2855 return (proc_rdrv(adapter, page, 0, 9)); 2856 } 2857 2858 2859 /** 2860 * proc_rdrv_20() 2861 * @page - buffer to write the data in 2862 * @start - where the actual data has been written in page 2863 * @offset - same meaning as the read system call 2864 * @count - same meaning as the read system call 2865 * @eof - set if no more data needs to be returned 2866 * @data - pointer to our soft state 2867 * 2868 * Display real time information about the logical drives 0 through 9. 2869 */ 2870 static int 2871 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof, 2872 void *data) 2873 { 2874 adapter_t *adapter = (adapter_t *)data; 2875 2876 *eof = 1; 2877 2878 return (proc_rdrv(adapter, page, 10, 19)); 2879 } 2880 2881 2882 /** 2883 * proc_rdrv_30() 2884 * @page - buffer to write the data in 2885 * @start - where the actual data has been written in page 2886 * @offset - same meaning as the read system call 2887 * @count - same meaning as the read system call 2888 * @eof - set if no more data needs to be returned 2889 * @data - pointer to our soft state 2890 * 2891 * Display real time information about the logical drives 0 through 9. 2892 */ 2893 static int 2894 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof, 2895 void *data) 2896 { 2897 adapter_t *adapter = (adapter_t *)data; 2898 2899 *eof = 1; 2900 2901 return (proc_rdrv(adapter, page, 20, 29)); 2902 } 2903 2904 2905 /** 2906 * proc_rdrv_40() 2907 * @page - buffer to write the data in 2908 * @start - where the actual data has been written in page 2909 * @offset - same meaning as the read system call 2910 * @count - same meaning as the read system call 2911 * @eof - set if no more data needs to be returned 2912 * @data - pointer to our soft state 2913 * 2914 * Display real time information about the logical drives 0 through 9. 2915 */ 2916 static int 2917 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof, 2918 void *data) 2919 { 2920 adapter_t *adapter = (adapter_t *)data; 2921 2922 *eof = 1; 2923 2924 return (proc_rdrv(adapter, page, 30, 39)); 2925 } 2926 2927 2928 /** 2929 * proc_rdrv() 2930 * @page - buffer to write the data in 2931 * @adapter - pointer to our soft state 2932 * @start - starting logical drive to display 2933 * @end - ending logical drive to display 2934 * 2935 * We do not print the inquiry information since its already available through 2936 * /proc/scsi/scsi interface 2937 */ 2938 static int 2939 proc_rdrv(adapter_t *adapter, char *page, int start, int end ) 2940 { 2941 dma_addr_t dma_handle; 2942 logdrv_param *lparam; 2943 megacmd_t mc; 2944 char *disk_array; 2945 dma_addr_t disk_array_dma_handle; 2946 caddr_t inquiry; 2947 struct pci_dev *pdev; 2948 u8 *rdrv_state; 2949 int num_ldrv; 2950 u32 array_sz; 2951 int len = 0; 2952 int i; 2953 2954 if( make_local_pdev(adapter, &pdev) != 0 ) { 2955 return len; 2956 } 2957 2958 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2959 free_local_pdev(pdev); 2960 return len; 2961 } 2962 2963 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2964 2965 len = sprintf(page, "Adapter inquiry failed.\n"); 2966 2967 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2968 2969 mega_free_inquiry(inquiry, dma_handle, pdev); 2970 2971 free_local_pdev(pdev); 2972 2973 return len; 2974 } 2975 2976 memset(&mc, 0, sizeof(megacmd_t)); 2977 2978 if( adapter->flag & BOARD_40LD ) { 2979 array_sz = sizeof(disk_array_40ld); 2980 2981 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2982 2983 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2984 } 2985 else { 2986 array_sz = sizeof(disk_array_8ld); 2987 2988 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2989 raid_inq.logdrv_info.ldrv_state; 2990 2991 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2992 raid_inq.logdrv_info.num_ldrv; 2993 } 2994 2995 disk_array = pci_alloc_consistent(pdev, array_sz, 2996 &disk_array_dma_handle); 2997 2998 if( disk_array == NULL ) { 2999 len = sprintf(page, "memory not available.\n"); 3000 3001 mega_free_inquiry(inquiry, dma_handle, pdev); 3002 3003 free_local_pdev(pdev); 3004 3005 return len; 3006 } 3007 3008 mc.xferaddr = (u32)disk_array_dma_handle; 3009 3010 if( adapter->flag & BOARD_40LD ) { 3011 mc.cmd = FC_NEW_CONFIG; 3012 mc.opcode = OP_DCMD_READ_CONFIG; 3013 3014 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) { 3015 3016 len = sprintf(page, "40LD read config failed.\n"); 3017 3018 mega_free_inquiry(inquiry, dma_handle, pdev); 3019 3020 pci_free_consistent(pdev, array_sz, disk_array, 3021 disk_array_dma_handle); 3022 3023 free_local_pdev(pdev); 3024 3025 return len; 3026 } 3027 3028 } 3029 else { 3030 mc.cmd = NEW_READ_CONFIG_8LD; 3031 3032 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) { 3033 3034 mc.cmd = READ_CONFIG_8LD; 3035 3036 if( mega_internal_command(adapter, LOCK_INT, &mc, 3037 NULL) ){ 3038 3039 len = sprintf(page, 3040 "8LD read config failed.\n"); 3041 3042 mega_free_inquiry(inquiry, dma_handle, pdev); 3043 3044 pci_free_consistent(pdev, array_sz, 3045 disk_array, 3046 disk_array_dma_handle); 3047 3048 free_local_pdev(pdev); 3049 3050 return len; 3051 } 3052 } 3053 } 3054 3055 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 3056 3057 if( adapter->flag & BOARD_40LD ) { 3058 lparam = 3059 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 3060 } 3061 else { 3062 lparam = 3063 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 3064 } 3065 3066 /* 3067 * Check for overflow. We print less than 240 characters for 3068 * information about each logical drive. 3069 */ 3070 if( (len + 240) >= PAGE_SIZE ) break; 3071 3072 len += sprintf(page+len, "Logical drive:%2d:, ", i); 3073 3074 switch( rdrv_state[i] & 0x0F ) { 3075 case RDRV_OFFLINE: 3076 len += sprintf(page+len, "state: offline"); 3077 break; 3078 3079 case RDRV_DEGRADED: 3080 len += sprintf(page+len, "state: degraded"); 3081 break; 3082 3083 case RDRV_OPTIMAL: 3084 len += sprintf(page+len, "state: optimal"); 3085 break; 3086 3087 case RDRV_DELETED: 3088 len += sprintf(page+len, "state: deleted"); 3089 break; 3090 3091 default: 3092 len += sprintf(page+len, "state: unknown"); 3093 break; 3094 } 3095 3096 /* 3097 * Check if check consistency or initialization is going on 3098 * for this logical drive. 3099 */ 3100 if( (rdrv_state[i] & 0xF0) == 0x20 ) { 3101 len += sprintf(page+len, 3102 ", check-consistency in progress"); 3103 } 3104 else if( (rdrv_state[i] & 0xF0) == 0x10 ) { 3105 len += sprintf(page+len, 3106 ", initialization in progress"); 3107 } 3108 3109 len += sprintf(page+len, "\n"); 3110 3111 len += sprintf(page+len, "Span depth:%3d, ", 3112 lparam->span_depth); 3113 3114 len += sprintf(page+len, "RAID level:%3d, ", 3115 lparam->level); 3116 3117 len += sprintf(page+len, "Stripe size:%3d, ", 3118 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 3119 3120 len += sprintf(page+len, "Row size:%3d\n", 3121 lparam->row_size); 3122 3123 3124 len += sprintf(page+len, "Read Policy: "); 3125 3126 switch(lparam->read_ahead) { 3127 3128 case NO_READ_AHEAD: 3129 len += sprintf(page+len, "No read ahead, "); 3130 break; 3131 3132 case READ_AHEAD: 3133 len += sprintf(page+len, "Read ahead, "); 3134 break; 3135 3136 case ADAP_READ_AHEAD: 3137 len += sprintf(page+len, "Adaptive, "); 3138 break; 3139 3140 } 3141 3142 len += sprintf(page+len, "Write Policy: "); 3143 3144 switch(lparam->write_mode) { 3145 3146 case WRMODE_WRITE_THRU: 3147 len += sprintf(page+len, "Write thru, "); 3148 break; 3149 3150 case WRMODE_WRITE_BACK: 3151 len += sprintf(page+len, "Write back, "); 3152 break; 3153 } 3154 3155 len += sprintf(page+len, "Cache Policy: "); 3156 3157 switch(lparam->direct_io) { 3158 3159 case CACHED_IO: 3160 len += sprintf(page+len, "Cached IO\n\n"); 3161 break; 3162 3163 case DIRECT_IO: 3164 len += sprintf(page+len, "Direct IO\n\n"); 3165 break; 3166 } 3167 } 3168 3169 mega_free_inquiry(inquiry, dma_handle, pdev); 3170 3171 pci_free_consistent(pdev, array_sz, disk_array, 3172 disk_array_dma_handle); 3173 3174 free_local_pdev(pdev); 3175 3176 return len; 3177 } 3178 3179 #endif 3180 3181 3182 /** 3183 * megaraid_biosparam() 3184 * 3185 * Return the disk geometry for a particular disk 3186 */ 3187 static int 3188 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 3189 sector_t capacity, int geom[]) 3190 { 3191 adapter_t *adapter; 3192 unsigned char *bh; 3193 int heads; 3194 int sectors; 3195 int cylinders; 3196 int rval; 3197 3198 /* Get pointer to host config structure */ 3199 adapter = (adapter_t *)sdev->host->hostdata; 3200 3201 if (IS_RAID_CH(adapter, sdev->channel)) { 3202 /* Default heads (64) & sectors (32) */ 3203 heads = 64; 3204 sectors = 32; 3205 cylinders = (ulong)capacity / (heads * sectors); 3206 3207 /* 3208 * Handle extended translation size for logical drives 3209 * > 1Gb 3210 */ 3211 if ((ulong)capacity >= 0x200000) { 3212 heads = 255; 3213 sectors = 63; 3214 cylinders = (ulong)capacity / (heads * sectors); 3215 } 3216 3217 /* return result */ 3218 geom[0] = heads; 3219 geom[1] = sectors; 3220 geom[2] = cylinders; 3221 } 3222 else { 3223 bh = scsi_bios_ptable(bdev); 3224 3225 if( bh ) { 3226 rval = scsi_partsize(bh, capacity, 3227 &geom[2], &geom[0], &geom[1]); 3228 kfree(bh); 3229 if( rval != -1 ) 3230 return rval; 3231 } 3232 3233 printk(KERN_INFO 3234 "megaraid: invalid partition on this disk on channel %d\n", 3235 sdev->channel); 3236 3237 /* Default heads (64) & sectors (32) */ 3238 heads = 64; 3239 sectors = 32; 3240 cylinders = (ulong)capacity / (heads * sectors); 3241 3242 /* Handle extended translation size for logical drives > 1Gb */ 3243 if ((ulong)capacity >= 0x200000) { 3244 heads = 255; 3245 sectors = 63; 3246 cylinders = (ulong)capacity / (heads * sectors); 3247 } 3248 3249 /* return result */ 3250 geom[0] = heads; 3251 geom[1] = sectors; 3252 geom[2] = cylinders; 3253 } 3254 3255 return 0; 3256 } 3257 3258 /** 3259 * mega_init_scb() 3260 * @adapter - pointer to our soft state 3261 * 3262 * Allocate memory for the various pointers in the scb structures: 3263 * scatter-gather list pointer, passthru and extended passthru structure 3264 * pointers. 3265 */ 3266 static int 3267 mega_init_scb(adapter_t *adapter) 3268 { 3269 scb_t *scb; 3270 int i; 3271 3272 for( i = 0; i < adapter->max_cmds; i++ ) { 3273 3274 scb = &adapter->scb_list[i]; 3275 3276 scb->sgl64 = NULL; 3277 scb->sgl = NULL; 3278 scb->pthru = NULL; 3279 scb->epthru = NULL; 3280 } 3281 3282 for( i = 0; i < adapter->max_cmds; i++ ) { 3283 3284 scb = &adapter->scb_list[i]; 3285 3286 scb->idx = i; 3287 3288 scb->sgl64 = pci_alloc_consistent(adapter->dev, 3289 sizeof(mega_sgl64) * adapter->sglen, 3290 &scb->sgl_dma_addr); 3291 3292 scb->sgl = (mega_sglist *)scb->sgl64; 3293 3294 if( !scb->sgl ) { 3295 printk(KERN_WARNING "RAID: Can't allocate sglist.\n"); 3296 mega_free_sgl(adapter); 3297 return -1; 3298 } 3299 3300 scb->pthru = pci_alloc_consistent(adapter->dev, 3301 sizeof(mega_passthru), 3302 &scb->pthru_dma_addr); 3303 3304 if( !scb->pthru ) { 3305 printk(KERN_WARNING "RAID: Can't allocate passthru.\n"); 3306 mega_free_sgl(adapter); 3307 return -1; 3308 } 3309 3310 scb->epthru = pci_alloc_consistent(adapter->dev, 3311 sizeof(mega_ext_passthru), 3312 &scb->epthru_dma_addr); 3313 3314 if( !scb->epthru ) { 3315 printk(KERN_WARNING 3316 "Can't allocate extended passthru.\n"); 3317 mega_free_sgl(adapter); 3318 return -1; 3319 } 3320 3321 3322 scb->dma_type = MEGA_DMA_TYPE_NONE; 3323 3324 /* 3325 * Link to free list 3326 * lock not required since we are loading the driver, so no 3327 * commands possible right now. 3328 */ 3329 scb->state = SCB_FREE; 3330 scb->cmd = NULL; 3331 list_add(&scb->list, &adapter->free_list); 3332 } 3333 3334 return 0; 3335 } 3336 3337 3338 /** 3339 * megadev_open() 3340 * @inode - unused 3341 * @filep - unused 3342 * 3343 * Routines for the character/ioctl interface to the driver. Find out if this 3344 * is a valid open. If yes, increment the module use count so that it cannot 3345 * be unloaded. 3346 */ 3347 static int 3348 megadev_open (struct inode *inode, struct file *filep) 3349 { 3350 /* 3351 * Only allow superuser to access private ioctl interface 3352 */ 3353 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 3354 3355 return 0; 3356 } 3357 3358 3359 /** 3360 * megadev_ioctl() 3361 * @inode - Our device inode 3362 * @filep - unused 3363 * @cmd - ioctl command 3364 * @arg - user buffer 3365 * 3366 * ioctl entry point for our private ioctl interface. We move the data in from 3367 * the user space, prepare the command (if necessary, convert the old MIMD 3368 * ioctl to new ioctl command), and issue a synchronous command to the 3369 * controller. 3370 */ 3371 static int 3372 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, 3373 unsigned long arg) 3374 { 3375 adapter_t *adapter; 3376 nitioctl_t uioc; 3377 int adapno; 3378 int rval; 3379 mega_passthru __user *upthru; /* user address for passthru */ 3380 mega_passthru *pthru; /* copy user passthru here */ 3381 dma_addr_t pthru_dma_hndl; 3382 void *data = NULL; /* data to be transferred */ 3383 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 3384 megacmd_t mc; 3385 megastat_t __user *ustats; 3386 int num_ldrv; 3387 u32 uxferaddr = 0; 3388 struct pci_dev *pdev; 3389 3390 ustats = NULL; /* avoid compilation warnings */ 3391 num_ldrv = 0; 3392 3393 /* 3394 * Make sure only USCSICMD are issued through this interface. 3395 * MIMD application would still fire different command. 3396 */ 3397 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 3398 return -EINVAL; 3399 } 3400 3401 /* 3402 * Check and convert a possible MIMD command to NIT command. 3403 * mega_m_to_n() copies the data from the user space, so we do not 3404 * have to do it here. 3405 * NOTE: We will need some user address to copyout the data, therefore 3406 * the inteface layer will also provide us with the required user 3407 * addresses. 3408 */ 3409 memset(&uioc, 0, sizeof(nitioctl_t)); 3410 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3411 return rval; 3412 3413 3414 switch( uioc.opcode ) { 3415 3416 case GET_DRIVER_VER: 3417 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3418 return (-EFAULT); 3419 3420 break; 3421 3422 case GET_N_ADAP: 3423 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3424 return (-EFAULT); 3425 3426 /* 3427 * Shucks. MIMD interface returns a positive value for number 3428 * of adapters. TODO: Change it to return 0 when there is no 3429 * applicatio using mimd interface. 3430 */ 3431 return hba_count; 3432 3433 case GET_ADAP_INFO: 3434 3435 /* 3436 * Which adapter 3437 */ 3438 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3439 return (-ENODEV); 3440 3441 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3442 sizeof(struct mcontroller)) ) 3443 return (-EFAULT); 3444 break; 3445 3446 #if MEGA_HAVE_STATS 3447 3448 case GET_STATS: 3449 /* 3450 * Which adapter 3451 */ 3452 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3453 return (-ENODEV); 3454 3455 adapter = hba_soft_state[adapno]; 3456 3457 ustats = uioc.uioc_uaddr; 3458 3459 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3460 return (-EFAULT); 3461 3462 /* 3463 * Check for the validity of the logical drive number 3464 */ 3465 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3466 3467 if( copy_to_user(ustats->nreads, adapter->nreads, 3468 num_ldrv*sizeof(u32)) ) 3469 return -EFAULT; 3470 3471 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3472 num_ldrv*sizeof(u32)) ) 3473 return -EFAULT; 3474 3475 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3476 num_ldrv*sizeof(u32)) ) 3477 return -EFAULT; 3478 3479 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3480 num_ldrv*sizeof(u32)) ) 3481 return -EFAULT; 3482 3483 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3484 num_ldrv*sizeof(u32)) ) 3485 return -EFAULT; 3486 3487 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3488 num_ldrv*sizeof(u32)) ) 3489 return -EFAULT; 3490 3491 return 0; 3492 3493 #endif 3494 case MBOX_CMD: 3495 3496 /* 3497 * Which adapter 3498 */ 3499 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3500 return (-ENODEV); 3501 3502 adapter = hba_soft_state[adapno]; 3503 3504 /* 3505 * Deletion of logical drive is a special case. The adapter 3506 * should be quiescent before this command is issued. 3507 */ 3508 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3509 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3510 3511 /* 3512 * Do we support this feature 3513 */ 3514 if( !adapter->support_random_del ) { 3515 printk(KERN_WARNING "megaraid: logdrv "); 3516 printk("delete on non-supporting F/W.\n"); 3517 3518 return (-EINVAL); 3519 } 3520 3521 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3522 3523 if( rval == 0 ) { 3524 memset(&mc, 0, sizeof(megacmd_t)); 3525 3526 mc.status = rval; 3527 3528 rval = mega_n_to_m((void __user *)arg, &mc); 3529 } 3530 3531 return rval; 3532 } 3533 /* 3534 * This interface only support the regular passthru commands. 3535 * Reject extended passthru and 64-bit passthru 3536 */ 3537 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3538 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3539 3540 printk(KERN_WARNING "megaraid: rejected passthru.\n"); 3541 3542 return (-EINVAL); 3543 } 3544 3545 /* 3546 * For all internal commands, the buffer must be allocated in 3547 * <4GB address range 3548 */ 3549 if( make_local_pdev(adapter, &pdev) != 0 ) 3550 return -EIO; 3551 3552 /* Is it a passthru command or a DCMD */ 3553 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3554 /* Passthru commands */ 3555 3556 pthru = pci_alloc_consistent(pdev, 3557 sizeof(mega_passthru), 3558 &pthru_dma_hndl); 3559 3560 if( pthru == NULL ) { 3561 free_local_pdev(pdev); 3562 return (-ENOMEM); 3563 } 3564 3565 /* 3566 * The user passthru structure 3567 */ 3568 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr; 3569 3570 /* 3571 * Copy in the user passthru here. 3572 */ 3573 if( copy_from_user(pthru, upthru, 3574 sizeof(mega_passthru)) ) { 3575 3576 pci_free_consistent(pdev, 3577 sizeof(mega_passthru), pthru, 3578 pthru_dma_hndl); 3579 3580 free_local_pdev(pdev); 3581 3582 return (-EFAULT); 3583 } 3584 3585 /* 3586 * Is there a data transfer 3587 */ 3588 if( pthru->dataxferlen ) { 3589 data = pci_alloc_consistent(pdev, 3590 pthru->dataxferlen, 3591 &data_dma_hndl); 3592 3593 if( data == NULL ) { 3594 pci_free_consistent(pdev, 3595 sizeof(mega_passthru), 3596 pthru, 3597 pthru_dma_hndl); 3598 3599 free_local_pdev(pdev); 3600 3601 return (-ENOMEM); 3602 } 3603 3604 /* 3605 * Save the user address and point the kernel 3606 * address at just allocated memory 3607 */ 3608 uxferaddr = pthru->dataxferaddr; 3609 pthru->dataxferaddr = data_dma_hndl; 3610 } 3611 3612 3613 /* 3614 * Is data coming down-stream 3615 */ 3616 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3617 /* 3618 * Get the user data 3619 */ 3620 if( copy_from_user(data, (char __user *)uxferaddr, 3621 pthru->dataxferlen) ) { 3622 rval = (-EFAULT); 3623 goto freemem_and_return; 3624 } 3625 } 3626 3627 memset(&mc, 0, sizeof(megacmd_t)); 3628 3629 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3630 mc.xferaddr = (u32)pthru_dma_hndl; 3631 3632 /* 3633 * Issue the command 3634 */ 3635 mega_internal_command(adapter, LOCK_INT, &mc, pthru); 3636 3637 rval = mega_n_to_m((void __user *)arg, &mc); 3638 3639 if( rval ) goto freemem_and_return; 3640 3641 3642 /* 3643 * Is data going up-stream 3644 */ 3645 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3646 if( copy_to_user((char __user *)uxferaddr, data, 3647 pthru->dataxferlen) ) { 3648 rval = (-EFAULT); 3649 } 3650 } 3651 3652 /* 3653 * Send the request sense data also, irrespective of 3654 * whether the user has asked for it or not. 3655 */ 3656 copy_to_user(upthru->reqsensearea, 3657 pthru->reqsensearea, 14); 3658 3659 freemem_and_return: 3660 if( pthru->dataxferlen ) { 3661 pci_free_consistent(pdev, 3662 pthru->dataxferlen, data, 3663 data_dma_hndl); 3664 } 3665 3666 pci_free_consistent(pdev, sizeof(mega_passthru), 3667 pthru, pthru_dma_hndl); 3668 3669 free_local_pdev(pdev); 3670 3671 return rval; 3672 } 3673 else { 3674 /* DCMD commands */ 3675 3676 /* 3677 * Is there a data transfer 3678 */ 3679 if( uioc.xferlen ) { 3680 data = pci_alloc_consistent(pdev, 3681 uioc.xferlen, &data_dma_hndl); 3682 3683 if( data == NULL ) { 3684 free_local_pdev(pdev); 3685 return (-ENOMEM); 3686 } 3687 3688 uxferaddr = MBOX(uioc)->xferaddr; 3689 } 3690 3691 /* 3692 * Is data coming down-stream 3693 */ 3694 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3695 /* 3696 * Get the user data 3697 */ 3698 if( copy_from_user(data, (char __user *)uxferaddr, 3699 uioc.xferlen) ) { 3700 3701 pci_free_consistent(pdev, 3702 uioc.xferlen, 3703 data, data_dma_hndl); 3704 3705 free_local_pdev(pdev); 3706 3707 return (-EFAULT); 3708 } 3709 } 3710 3711 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3712 3713 mc.xferaddr = (u32)data_dma_hndl; 3714 3715 /* 3716 * Issue the command 3717 */ 3718 mega_internal_command(adapter, LOCK_INT, &mc, NULL); 3719 3720 rval = mega_n_to_m((void __user *)arg, &mc); 3721 3722 if( rval ) { 3723 if( uioc.xferlen ) { 3724 pci_free_consistent(pdev, 3725 uioc.xferlen, data, 3726 data_dma_hndl); 3727 } 3728 3729 free_local_pdev(pdev); 3730 3731 return rval; 3732 } 3733 3734 /* 3735 * Is data going up-stream 3736 */ 3737 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3738 if( copy_to_user((char __user *)uxferaddr, data, 3739 uioc.xferlen) ) { 3740 3741 rval = (-EFAULT); 3742 } 3743 } 3744 3745 if( uioc.xferlen ) { 3746 pci_free_consistent(pdev, 3747 uioc.xferlen, data, 3748 data_dma_hndl); 3749 } 3750 3751 free_local_pdev(pdev); 3752 3753 return rval; 3754 } 3755 3756 default: 3757 return (-EINVAL); 3758 } 3759 3760 return 0; 3761 } 3762 3763 /** 3764 * mega_m_to_n() 3765 * @arg - user address 3766 * @uioc - new ioctl structure 3767 * 3768 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3769 * structure 3770 * 3771 * Converts the older mimd ioctl structure to newer NIT structure 3772 */ 3773 static int 3774 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3775 { 3776 struct uioctl_t uioc_mimd; 3777 char signature[8] = {0}; 3778 u8 opcode; 3779 u8 subopcode; 3780 3781 3782 /* 3783 * check is the application conforms to NIT. We do not have to do much 3784 * in that case. 3785 * We exploit the fact that the signature is stored in the very 3786 * begining of the structure. 3787 */ 3788 3789 if( copy_from_user(signature, arg, 7) ) 3790 return (-EFAULT); 3791 3792 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3793 3794 /* 3795 * NOTE NOTE: The nit ioctl is still under flux because of 3796 * change of mailbox definition, in HPE. No applications yet 3797 * use this interface and let's not have applications use this 3798 * interface till the new specifitions are in place. 3799 */ 3800 return -EINVAL; 3801 #if 0 3802 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3803 return (-EFAULT); 3804 return 0; 3805 #endif 3806 } 3807 3808 /* 3809 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3810 * 3811 * Get the user ioctl structure 3812 */ 3813 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3814 return (-EFAULT); 3815 3816 3817 /* 3818 * Get the opcode and subopcode for the commands 3819 */ 3820 opcode = uioc_mimd.ui.fcs.opcode; 3821 subopcode = uioc_mimd.ui.fcs.subopcode; 3822 3823 switch (opcode) { 3824 case 0x82: 3825 3826 switch (subopcode) { 3827 3828 case MEGAIOC_QDRVRVER: /* Query driver version */ 3829 uioc->opcode = GET_DRIVER_VER; 3830 uioc->uioc_uaddr = uioc_mimd.data; 3831 break; 3832 3833 case MEGAIOC_QNADAP: /* Get # of adapters */ 3834 uioc->opcode = GET_N_ADAP; 3835 uioc->uioc_uaddr = uioc_mimd.data; 3836 break; 3837 3838 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3839 uioc->opcode = GET_ADAP_INFO; 3840 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3841 uioc->uioc_uaddr = uioc_mimd.data; 3842 break; 3843 3844 default: 3845 return(-EINVAL); 3846 } 3847 3848 break; 3849 3850 3851 case 0x81: 3852 3853 uioc->opcode = MBOX_CMD; 3854 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3855 3856 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3857 3858 uioc->xferlen = uioc_mimd.ui.fcs.length; 3859 3860 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3861 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3862 3863 break; 3864 3865 case 0x80: 3866 3867 uioc->opcode = MBOX_CMD; 3868 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3869 3870 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3871 3872 /* 3873 * Choose the xferlen bigger of input and output data 3874 */ 3875 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3876 uioc_mimd.outlen : uioc_mimd.inlen; 3877 3878 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3879 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3880 3881 break; 3882 3883 default: 3884 return (-EINVAL); 3885 3886 } 3887 3888 return 0; 3889 } 3890 3891 /* 3892 * mega_n_to_m() 3893 * @arg - user address 3894 * @mc - mailbox command 3895 * 3896 * Updates the status information to the application, depending on application 3897 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3898 */ 3899 static int 3900 mega_n_to_m(void __user *arg, megacmd_t *mc) 3901 { 3902 nitioctl_t __user *uiocp; 3903 megacmd_t __user *umc; 3904 mega_passthru __user *upthru; 3905 struct uioctl_t __user *uioc_mimd; 3906 char signature[8] = {0}; 3907 3908 /* 3909 * check is the application conforms to NIT. 3910 */ 3911 if( copy_from_user(signature, arg, 7) ) 3912 return -EFAULT; 3913 3914 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3915 3916 uiocp = arg; 3917 3918 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3919 return (-EFAULT); 3920 3921 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3922 3923 umc = MBOX_P(uiocp); 3924 3925 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3926 return -EFAULT; 3927 3928 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3929 return (-EFAULT); 3930 } 3931 } 3932 else { 3933 uioc_mimd = arg; 3934 3935 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3936 return (-EFAULT); 3937 3938 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3939 3940 umc = (megacmd_t __user *)uioc_mimd->mbox; 3941 3942 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3943 return (-EFAULT); 3944 3945 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3946 return (-EFAULT); 3947 } 3948 } 3949 3950 return 0; 3951 } 3952 3953 3954 /* 3955 * MEGARAID 'FW' commands. 3956 */ 3957 3958 /** 3959 * mega_is_bios_enabled() 3960 * @adapter - pointer to our soft state 3961 * 3962 * issue command to find out if the BIOS is enabled for this controller 3963 */ 3964 static int 3965 mega_is_bios_enabled(adapter_t *adapter) 3966 { 3967 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3968 mbox_t *mbox; 3969 int ret; 3970 3971 mbox = (mbox_t *)raw_mbox; 3972 3973 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3974 3975 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3976 3977 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3978 3979 raw_mbox[0] = IS_BIOS_ENABLED; 3980 raw_mbox[2] = GET_BIOS; 3981 3982 3983 ret = issue_scb_block(adapter, raw_mbox); 3984 3985 return *(char *)adapter->mega_buffer; 3986 } 3987 3988 3989 /** 3990 * mega_enum_raid_scsi() 3991 * @adapter - pointer to our soft state 3992 * 3993 * Find out what channels are RAID/SCSI. This information is used to 3994 * differentiate the virtual channels and physical channels and to support 3995 * ROMB feature and non-disk devices. 3996 */ 3997 static void 3998 mega_enum_raid_scsi(adapter_t *adapter) 3999 { 4000 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4001 mbox_t *mbox; 4002 int i; 4003 4004 mbox = (mbox_t *)raw_mbox; 4005 4006 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4007 4008 /* 4009 * issue command to find out what channels are raid/scsi 4010 */ 4011 raw_mbox[0] = CHNL_CLASS; 4012 raw_mbox[2] = GET_CHNL_CLASS; 4013 4014 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4015 4016 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4017 4018 /* 4019 * Non-ROMB firmware fail this command, so all channels 4020 * must be shown RAID 4021 */ 4022 adapter->mega_ch_class = 0xFF; 4023 4024 if(!issue_scb_block(adapter, raw_mbox)) { 4025 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 4026 4027 } 4028 4029 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 4030 if( (adapter->mega_ch_class >> i) & 0x01 ) { 4031 printk(KERN_INFO "megaraid: channel[%d] is raid.\n", 4032 i); 4033 } 4034 else { 4035 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n", 4036 i); 4037 } 4038 } 4039 4040 return; 4041 } 4042 4043 4044 /** 4045 * mega_get_boot_drv() 4046 * @adapter - pointer to our soft state 4047 * 4048 * Find out which device is the boot device. Note, any logical drive or any 4049 * phyical device (e.g., a CDROM) can be designated as a boot device. 4050 */ 4051 static void 4052 mega_get_boot_drv(adapter_t *adapter) 4053 { 4054 struct private_bios_data *prv_bios_data; 4055 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4056 mbox_t *mbox; 4057 u16 cksum = 0; 4058 u8 *cksum_p; 4059 u8 boot_pdrv; 4060 int i; 4061 4062 mbox = (mbox_t *)raw_mbox; 4063 4064 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4065 4066 raw_mbox[0] = BIOS_PVT_DATA; 4067 raw_mbox[2] = GET_BIOS_PVT_DATA; 4068 4069 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4070 4071 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4072 4073 adapter->boot_ldrv_enabled = 0; 4074 adapter->boot_ldrv = 0; 4075 4076 adapter->boot_pdrv_enabled = 0; 4077 adapter->boot_pdrv_ch = 0; 4078 adapter->boot_pdrv_tgt = 0; 4079 4080 if(issue_scb_block(adapter, raw_mbox) == 0) { 4081 prv_bios_data = 4082 (struct private_bios_data *)adapter->mega_buffer; 4083 4084 cksum = 0; 4085 cksum_p = (char *)prv_bios_data; 4086 for (i = 0; i < 14; i++ ) { 4087 cksum += (u16)(*cksum_p++); 4088 } 4089 4090 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 4091 4092 /* 4093 * If MSB is set, a physical drive is set as boot 4094 * device 4095 */ 4096 if( prv_bios_data->boot_drv & 0x80 ) { 4097 adapter->boot_pdrv_enabled = 1; 4098 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 4099 adapter->boot_pdrv_ch = boot_pdrv / 16; 4100 adapter->boot_pdrv_tgt = boot_pdrv % 16; 4101 } 4102 else { 4103 adapter->boot_ldrv_enabled = 1; 4104 adapter->boot_ldrv = prv_bios_data->boot_drv; 4105 } 4106 } 4107 } 4108 4109 } 4110 4111 /** 4112 * mega_support_random_del() 4113 * @adapter - pointer to our soft state 4114 * 4115 * Find out if this controller supports random deletion and addition of 4116 * logical drives 4117 */ 4118 static int 4119 mega_support_random_del(adapter_t *adapter) 4120 { 4121 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4122 mbox_t *mbox; 4123 int rval; 4124 4125 mbox = (mbox_t *)raw_mbox; 4126 4127 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4128 4129 /* 4130 * issue command 4131 */ 4132 raw_mbox[0] = FC_DEL_LOGDRV; 4133 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 4134 4135 rval = issue_scb_block(adapter, raw_mbox); 4136 4137 return !rval; 4138 } 4139 4140 4141 /** 4142 * mega_support_ext_cdb() 4143 * @adapter - pointer to our soft state 4144 * 4145 * Find out if this firmware support cdblen > 10 4146 */ 4147 static int 4148 mega_support_ext_cdb(adapter_t *adapter) 4149 { 4150 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4151 mbox_t *mbox; 4152 int rval; 4153 4154 mbox = (mbox_t *)raw_mbox; 4155 4156 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4157 /* 4158 * issue command to find out if controller supports extended CDBs. 4159 */ 4160 raw_mbox[0] = 0xA4; 4161 raw_mbox[2] = 0x16; 4162 4163 rval = issue_scb_block(adapter, raw_mbox); 4164 4165 return !rval; 4166 } 4167 4168 4169 /** 4170 * mega_del_logdrv() 4171 * @adapter - pointer to our soft state 4172 * @logdrv - logical drive to be deleted 4173 * 4174 * Delete the specified logical drive. It is the responsibility of the user 4175 * app to let the OS know about this operation. 4176 */ 4177 static int 4178 mega_del_logdrv(adapter_t *adapter, int logdrv) 4179 { 4180 unsigned long flags; 4181 scb_t *scb; 4182 int rval; 4183 4184 /* 4185 * Stop sending commands to the controller, queue them internally. 4186 * When deletion is complete, ISR will flush the queue. 4187 */ 4188 atomic_set(&adapter->quiescent, 1); 4189 4190 /* 4191 * Wait till all the issued commands are complete and there are no 4192 * commands in the pending queue 4193 */ 4194 while (atomic_read(&adapter->pend_cmds) > 0 || 4195 !list_empty(&adapter->pending_list)) 4196 msleep(1000); /* sleep for 1s */ 4197 4198 rval = mega_do_del_logdrv(adapter, logdrv); 4199 4200 spin_lock_irqsave(&adapter->lock, flags); 4201 4202 /* 4203 * If delete operation was successful, add 0x80 to the logical drive 4204 * ids for commands in the pending queue. 4205 */ 4206 if (adapter->read_ldidmap) { 4207 struct list_head *pos; 4208 list_for_each(pos, &adapter->pending_list) { 4209 scb = list_entry(pos, scb_t, list); 4210 if (scb->pthru->logdrv < 0x80 ) 4211 scb->pthru->logdrv += 0x80; 4212 } 4213 } 4214 4215 atomic_set(&adapter->quiescent, 0); 4216 4217 mega_runpendq(adapter); 4218 4219 spin_unlock_irqrestore(&adapter->lock, flags); 4220 4221 return rval; 4222 } 4223 4224 4225 static int 4226 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 4227 { 4228 megacmd_t mc; 4229 int rval; 4230 4231 memset( &mc, 0, sizeof(megacmd_t)); 4232 4233 mc.cmd = FC_DEL_LOGDRV; 4234 mc.opcode = OP_DEL_LOGDRV; 4235 mc.subopcode = logdrv; 4236 4237 rval = mega_internal_command(adapter, LOCK_INT, &mc, NULL); 4238 4239 /* log this event */ 4240 if(rval) { 4241 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv); 4242 return rval; 4243 } 4244 4245 /* 4246 * After deleting first logical drive, the logical drives must be 4247 * addressed by adding 0x80 to the logical drive id. 4248 */ 4249 adapter->read_ldidmap = 1; 4250 4251 return rval; 4252 } 4253 4254 4255 /** 4256 * mega_get_max_sgl() 4257 * @adapter - pointer to our soft state 4258 * 4259 * Find out the maximum number of scatter-gather elements supported by this 4260 * version of the firmware 4261 */ 4262 static void 4263 mega_get_max_sgl(adapter_t *adapter) 4264 { 4265 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4266 mbox_t *mbox; 4267 4268 mbox = (mbox_t *)raw_mbox; 4269 4270 memset(mbox, 0, sizeof(raw_mbox)); 4271 4272 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4273 4274 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4275 4276 raw_mbox[0] = MAIN_MISC_OPCODE; 4277 raw_mbox[2] = GET_MAX_SG_SUPPORT; 4278 4279 4280 if( issue_scb_block(adapter, raw_mbox) ) { 4281 /* 4282 * f/w does not support this command. Choose the default value 4283 */ 4284 adapter->sglen = MIN_SGLIST; 4285 } 4286 else { 4287 adapter->sglen = *((char *)adapter->mega_buffer); 4288 4289 /* 4290 * Make sure this is not more than the resources we are 4291 * planning to allocate 4292 */ 4293 if ( adapter->sglen > MAX_SGLIST ) 4294 adapter->sglen = MAX_SGLIST; 4295 } 4296 4297 return; 4298 } 4299 4300 4301 /** 4302 * mega_support_cluster() 4303 * @adapter - pointer to our soft state 4304 * 4305 * Find out if this firmware support cluster calls. 4306 */ 4307 static int 4308 mega_support_cluster(adapter_t *adapter) 4309 { 4310 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4311 mbox_t *mbox; 4312 4313 mbox = (mbox_t *)raw_mbox; 4314 4315 memset(mbox, 0, sizeof(raw_mbox)); 4316 4317 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4318 4319 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4320 4321 /* 4322 * Try to get the initiator id. This command will succeed iff the 4323 * clustering is available on this HBA. 4324 */ 4325 raw_mbox[0] = MEGA_GET_TARGET_ID; 4326 4327 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 4328 4329 /* 4330 * Cluster support available. Get the initiator target id. 4331 * Tell our id to mid-layer too. 4332 */ 4333 adapter->this_id = *(u32 *)adapter->mega_buffer; 4334 adapter->host->this_id = adapter->this_id; 4335 4336 return 1; 4337 } 4338 4339 return 0; 4340 } 4341 4342 4343 /** 4344 * mega_adapinq() 4345 * @adapter - pointer to our soft state 4346 * @dma_handle - DMA address of the buffer 4347 * 4348 * Issue internal comamnds while interrupts are available. 4349 * We only issue direct mailbox commands from within the driver. ioctl() 4350 * interface using these routines can issue passthru commands. 4351 */ 4352 static int 4353 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 4354 { 4355 megacmd_t mc; 4356 4357 memset(&mc, 0, sizeof(megacmd_t)); 4358 4359 if( adapter->flag & BOARD_40LD ) { 4360 mc.cmd = FC_NEW_CONFIG; 4361 mc.opcode = NC_SUBOP_ENQUIRY3; 4362 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 4363 } 4364 else { 4365 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 4366 } 4367 4368 mc.xferaddr = (u32)dma_handle; 4369 4370 if ( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) { 4371 return -1; 4372 } 4373 4374 return 0; 4375 } 4376 4377 4378 /** mega_internal_dev_inquiry() 4379 * @adapter - pointer to our soft state 4380 * @ch - channel for this device 4381 * @tgt - ID of this device 4382 * @buf_dma_handle - DMA address of the buffer 4383 * 4384 * Issue the scsi inquiry for the specified device. 4385 */ 4386 static int 4387 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4388 dma_addr_t buf_dma_handle) 4389 { 4390 mega_passthru *pthru; 4391 dma_addr_t pthru_dma_handle; 4392 megacmd_t mc; 4393 int rval; 4394 struct pci_dev *pdev; 4395 4396 4397 /* 4398 * For all internal commands, the buffer must be allocated in <4GB 4399 * address range 4400 */ 4401 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4402 4403 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4404 &pthru_dma_handle); 4405 4406 if( pthru == NULL ) { 4407 free_local_pdev(pdev); 4408 return -1; 4409 } 4410 4411 pthru->timeout = 2; 4412 pthru->ars = 1; 4413 pthru->reqsenselen = 14; 4414 pthru->islogical = 0; 4415 4416 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4417 4418 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4419 4420 pthru->cdblen = 6; 4421 4422 pthru->cdb[0] = INQUIRY; 4423 pthru->cdb[1] = 0; 4424 pthru->cdb[2] = 0; 4425 pthru->cdb[3] = 0; 4426 pthru->cdb[4] = 255; 4427 pthru->cdb[5] = 0; 4428 4429 4430 pthru->dataxferaddr = (u32)buf_dma_handle; 4431 pthru->dataxferlen = 256; 4432 4433 memset(&mc, 0, sizeof(megacmd_t)); 4434 4435 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4436 mc.xferaddr = (u32)pthru_dma_handle; 4437 4438 rval = mega_internal_command(adapter, LOCK_INT, &mc, pthru); 4439 4440 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4441 pthru_dma_handle); 4442 4443 free_local_pdev(pdev); 4444 4445 return rval; 4446 } 4447 4448 4449 /** 4450 * mega_internal_command() 4451 * @adapter - pointer to our soft state 4452 * @ls - the scope of the exclusion lock. 4453 * @mc - the mailbox command 4454 * @pthru - Passthru structure for DCDB commands 4455 * 4456 * Issue the internal commands in interrupt mode. 4457 * The last argument is the address of the passthru structure if the command 4458 * to be fired is a passthru command 4459 * 4460 * lockscope specifies whether the caller has already acquired the lock. Of 4461 * course, the caller must know which lock we are talking about. 4462 * 4463 * Note: parameter 'pthru' is null for non-passthru commands. 4464 */ 4465 static int 4466 mega_internal_command(adapter_t *adapter, lockscope_t ls, megacmd_t *mc, 4467 mega_passthru *pthru ) 4468 { 4469 Scsi_Cmnd *scmd; 4470 struct scsi_device *sdev; 4471 unsigned long flags = 0; 4472 scb_t *scb; 4473 int rval; 4474 4475 /* 4476 * The internal commands share one command id and hence are 4477 * serialized. This is so because we want to reserve maximum number of 4478 * available command ids for the I/O commands. 4479 */ 4480 down(&adapter->int_mtx); 4481 4482 scb = &adapter->int_scb; 4483 memset(scb, 0, sizeof(scb_t)); 4484 4485 scmd = &adapter->int_scmd; 4486 memset(scmd, 0, sizeof(Scsi_Cmnd)); 4487 4488 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL); 4489 memset(sdev, 0, sizeof(struct scsi_device)); 4490 scmd->device = sdev; 4491 4492 scmd->device->host = adapter->host; 4493 scmd->buffer = (void *)scb; 4494 scmd->cmnd[0] = MEGA_INTERNAL_CMD; 4495 4496 scb->state |= SCB_ACTIVE; 4497 scb->cmd = scmd; 4498 4499 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4500 4501 /* 4502 * Is it a passthru command 4503 */ 4504 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 4505 4506 scb->pthru = pthru; 4507 } 4508 4509 scb->idx = CMDID_INT_CMDS; 4510 4511 /* 4512 * Get the lock only if the caller has not acquired it already 4513 */ 4514 if( ls == LOCK_INT ) spin_lock_irqsave(&adapter->lock, flags); 4515 4516 megaraid_queue(scmd, mega_internal_done); 4517 4518 if( ls == LOCK_INT ) spin_unlock_irqrestore(&adapter->lock, flags); 4519 4520 wait_for_completion(&adapter->int_waitq); 4521 4522 rval = scmd->result; 4523 mc->status = scmd->result; 4524 kfree(sdev); 4525 4526 /* 4527 * Print a debug message for all failed commands. Applications can use 4528 * this information. 4529 */ 4530 if( scmd->result && trace_level ) { 4531 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", 4532 mc->cmd, mc->opcode, mc->subopcode, scmd->result); 4533 } 4534 4535 up(&adapter->int_mtx); 4536 4537 return rval; 4538 } 4539 4540 4541 /** 4542 * mega_internal_done() 4543 * @scmd - internal scsi command 4544 * 4545 * Callback routine for internal commands. 4546 */ 4547 static void 4548 mega_internal_done(Scsi_Cmnd *scmd) 4549 { 4550 adapter_t *adapter; 4551 4552 adapter = (adapter_t *)scmd->device->host->hostdata; 4553 4554 complete(&adapter->int_waitq); 4555 4556 } 4557 4558 4559 static struct scsi_host_template megaraid_template = { 4560 .module = THIS_MODULE, 4561 .name = "MegaRAID", 4562 .proc_name = "megaraid", 4563 .info = megaraid_info, 4564 .queuecommand = megaraid_queue, 4565 .bios_param = megaraid_biosparam, 4566 .max_sectors = MAX_SECTORS_PER_IO, 4567 .can_queue = MAX_COMMANDS, 4568 .this_id = DEFAULT_INITIATOR_ID, 4569 .sg_tablesize = MAX_SGLIST, 4570 .cmd_per_lun = DEF_CMD_PER_LUN, 4571 .use_clustering = ENABLE_CLUSTERING, 4572 .eh_abort_handler = megaraid_abort, 4573 .eh_device_reset_handler = megaraid_reset, 4574 .eh_bus_reset_handler = megaraid_reset, 4575 .eh_host_reset_handler = megaraid_reset, 4576 }; 4577 4578 static int __devinit 4579 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4580 { 4581 struct Scsi_Host *host; 4582 adapter_t *adapter; 4583 unsigned long mega_baseport, tbase, flag = 0; 4584 u16 subsysid, subsysvid; 4585 u8 pci_bus, pci_dev_func; 4586 int irq, i, j; 4587 int error = -ENODEV; 4588 4589 if (pci_enable_device(pdev)) 4590 goto out; 4591 pci_set_master(pdev); 4592 4593 pci_bus = pdev->bus->number; 4594 pci_dev_func = pdev->devfn; 4595 4596 /* 4597 * The megaraid3 stuff reports the ID of the Intel part which is not 4598 * remotely specific to the megaraid 4599 */ 4600 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4601 u16 magic; 4602 /* 4603 * Don't fall over the Compaq management cards using the same 4604 * PCI identifier 4605 */ 4606 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4607 pdev->subsystem_device == 0xC000) 4608 return -ENODEV; 4609 /* Now check the magic signature byte */ 4610 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4611 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4612 return -ENODEV; 4613 /* Ok it is probably a megaraid */ 4614 } 4615 4616 /* 4617 * For these vendor and device ids, signature offsets are not 4618 * valid and 64 bit is implicit 4619 */ 4620 if (id->driver_data & BOARD_64BIT) 4621 flag |= BOARD_64BIT; 4622 else { 4623 u32 magic64; 4624 4625 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4626 if (magic64 == HBA_SIGNATURE_64BIT) 4627 flag |= BOARD_64BIT; 4628 } 4629 4630 subsysvid = pdev->subsystem_vendor; 4631 subsysid = pdev->subsystem_device; 4632 4633 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:", 4634 id->vendor, id->device, pci_bus); 4635 4636 printk("slot %d:func %d\n", 4637 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func)); 4638 4639 /* Read the base port and IRQ from PCI */ 4640 mega_baseport = pci_resource_start(pdev, 0); 4641 irq = pdev->irq; 4642 4643 tbase = mega_baseport; 4644 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4645 flag |= BOARD_MEMMAP; 4646 4647 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4648 printk(KERN_WARNING "megaraid: mem region busy!\n"); 4649 goto out_disable_device; 4650 } 4651 4652 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4653 if (!mega_baseport) { 4654 printk(KERN_WARNING 4655 "megaraid: could not map hba memory\n"); 4656 goto out_release_region; 4657 } 4658 } else { 4659 flag |= BOARD_IOMAP; 4660 mega_baseport += 0x10; 4661 4662 if (!request_region(mega_baseport, 16, "megaraid")) 4663 goto out_disable_device; 4664 } 4665 4666 /* Initialize SCSI Host structure */ 4667 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4668 if (!host) 4669 goto out_iounmap; 4670 4671 adapter = (adapter_t *)host->hostdata; 4672 memset(adapter, 0, sizeof(adapter_t)); 4673 4674 printk(KERN_NOTICE 4675 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4676 host->host_no, mega_baseport, irq); 4677 4678 adapter->base = mega_baseport; 4679 4680 INIT_LIST_HEAD(&adapter->free_list); 4681 INIT_LIST_HEAD(&adapter->pending_list); 4682 INIT_LIST_HEAD(&adapter->completed_list); 4683 4684 adapter->flag = flag; 4685 spin_lock_init(&adapter->lock); 4686 scsi_assign_lock(host, &adapter->lock); 4687 4688 host->cmd_per_lun = max_cmd_per_lun; 4689 host->max_sectors = max_sectors_per_io; 4690 4691 adapter->dev = pdev; 4692 adapter->host = host; 4693 4694 adapter->host->irq = irq; 4695 4696 if (flag & BOARD_MEMMAP) 4697 adapter->host->base = tbase; 4698 else { 4699 adapter->host->io_port = tbase; 4700 adapter->host->n_io_port = 16; 4701 } 4702 4703 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4704 4705 /* 4706 * Allocate buffer to issue internal commands. 4707 */ 4708 adapter->mega_buffer = pci_alloc_consistent(adapter->dev, 4709 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); 4710 if (!adapter->mega_buffer) { 4711 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4712 goto out_host_put; 4713 } 4714 4715 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL); 4716 if (!adapter->scb_list) { 4717 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4718 goto out_free_cmd_buffer; 4719 } 4720 4721 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4722 megaraid_isr_memmapped : megaraid_isr_iomapped, 4723 SA_SHIRQ, "megaraid", adapter)) { 4724 printk(KERN_WARNING 4725 "megaraid: Couldn't register IRQ %d!\n", irq); 4726 goto out_free_scb_list; 4727 } 4728 4729 if (mega_setup_mailbox(adapter)) 4730 goto out_free_irq; 4731 4732 if (mega_query_adapter(adapter)) 4733 goto out_free_mbox; 4734 4735 /* 4736 * Have checks for some buggy f/w 4737 */ 4738 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4739 /* 4740 * Which firmware 4741 */ 4742 if (!strcmp(adapter->fw_version, "3.00") || 4743 !strcmp(adapter->fw_version, "3.01")) { 4744 4745 printk( KERN_WARNING 4746 "megaraid: Your card is a Dell PERC " 4747 "2/SC RAID controller with " 4748 "firmware\nmegaraid: 3.00 or 3.01. " 4749 "This driver is known to have " 4750 "corruption issues\nmegaraid: with " 4751 "those firmware versions on this " 4752 "specific card. In order\nmegaraid: " 4753 "to protect your data, please upgrade " 4754 "your firmware to version\nmegaraid: " 4755 "3.10 or later, available from the " 4756 "Dell Technical Support web\n" 4757 "megaraid: site at\nhttp://support." 4758 "dell.com/us/en/filelib/download/" 4759 "index.asp?fileid=2940\n" 4760 ); 4761 } 4762 } 4763 4764 /* 4765 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4766 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4767 * support, since this firmware cannot handle 64 bit 4768 * addressing 4769 */ 4770 if ((subsysvid == HP_SUBSYS_VID) && 4771 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4772 /* 4773 * which firmware 4774 */ 4775 if (!strcmp(adapter->fw_version, "H01.07") || 4776 !strcmp(adapter->fw_version, "H01.08") || 4777 !strcmp(adapter->fw_version, "H01.09") ) { 4778 printk(KERN_WARNING 4779 "megaraid: Firmware H.01.07, " 4780 "H.01.08, and H.01.09 on 1M/2M " 4781 "controllers\n" 4782 "megaraid: do not support 64 bit " 4783 "addressing.\nmegaraid: DISABLING " 4784 "64 bit support.\n"); 4785 adapter->flag &= ~BOARD_64BIT; 4786 } 4787 } 4788 4789 if (mega_is_bios_enabled(adapter)) 4790 mega_hbas[hba_count].is_bios_enabled = 1; 4791 mega_hbas[hba_count].hostdata_addr = adapter; 4792 4793 /* 4794 * Find out which channel is raid and which is scsi. This is 4795 * for ROMB support. 4796 */ 4797 mega_enum_raid_scsi(adapter); 4798 4799 /* 4800 * Find out if a logical drive is set as the boot drive. If 4801 * there is one, will make that as the first logical drive. 4802 * ROMB: Do we have to boot from a physical drive. Then all 4803 * the physical drives would appear before the logical disks. 4804 * Else, all the physical drives would be exported to the mid 4805 * layer after logical drives. 4806 */ 4807 mega_get_boot_drv(adapter); 4808 4809 if (adapter->boot_pdrv_enabled) { 4810 j = adapter->product_info.nchannels; 4811 for( i = 0; i < j; i++ ) 4812 adapter->logdrv_chan[i] = 0; 4813 for( i = j; i < NVIRT_CHAN + j; i++ ) 4814 adapter->logdrv_chan[i] = 1; 4815 } else { 4816 for (i = 0; i < NVIRT_CHAN; i++) 4817 adapter->logdrv_chan[i] = 1; 4818 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4819 adapter->logdrv_chan[i] = 0; 4820 adapter->mega_ch_class <<= NVIRT_CHAN; 4821 } 4822 4823 /* 4824 * Do we support random deletion and addition of logical 4825 * drives 4826 */ 4827 adapter->read_ldidmap = 0; /* set it after first logdrv 4828 delete cmd */ 4829 adapter->support_random_del = mega_support_random_del(adapter); 4830 4831 /* Initialize SCBs */ 4832 if (mega_init_scb(adapter)) 4833 goto out_free_mbox; 4834 4835 /* 4836 * Reset the pending commands counter 4837 */ 4838 atomic_set(&adapter->pend_cmds, 0); 4839 4840 /* 4841 * Reset the adapter quiescent flag 4842 */ 4843 atomic_set(&adapter->quiescent, 0); 4844 4845 hba_soft_state[hba_count] = adapter; 4846 4847 /* 4848 * Fill in the structure which needs to be passed back to the 4849 * application when it does an ioctl() for controller related 4850 * information. 4851 */ 4852 i = hba_count; 4853 4854 mcontroller[i].base = mega_baseport; 4855 mcontroller[i].irq = irq; 4856 mcontroller[i].numldrv = adapter->numldrv; 4857 mcontroller[i].pcibus = pci_bus; 4858 mcontroller[i].pcidev = id->device; 4859 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4860 mcontroller[i].pciid = -1; 4861 mcontroller[i].pcivendor = id->vendor; 4862 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4863 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4864 4865 4866 /* Set the Mode of addressing to 64 bit if we can */ 4867 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4868 pci_set_dma_mask(pdev, 0xffffffffffffffffULL); 4869 adapter->has_64bit_addr = 1; 4870 } else { 4871 pci_set_dma_mask(pdev, 0xffffffff); 4872 adapter->has_64bit_addr = 0; 4873 } 4874 4875 init_MUTEX(&adapter->int_mtx); 4876 init_completion(&adapter->int_waitq); 4877 4878 adapter->this_id = DEFAULT_INITIATOR_ID; 4879 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4880 4881 #if MEGA_HAVE_CLUSTERING 4882 /* 4883 * Is cluster support enabled on this controller 4884 * Note: In a cluster the HBAs ( the initiators ) will have 4885 * different target IDs and we cannot assume it to be 7. Call 4886 * to mega_support_cluster() will get the target ids also if 4887 * the cluster support is available 4888 */ 4889 adapter->has_cluster = mega_support_cluster(adapter); 4890 if (adapter->has_cluster) { 4891 printk(KERN_NOTICE 4892 "megaraid: Cluster driver, initiator id:%d\n", 4893 adapter->this_id); 4894 } 4895 #endif 4896 4897 pci_set_drvdata(pdev, host); 4898 4899 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4900 4901 error = scsi_add_host(host, &pdev->dev); 4902 if (error) 4903 goto out_free_mbox; 4904 4905 scsi_scan_host(host); 4906 hba_count++; 4907 return 0; 4908 4909 out_free_mbox: 4910 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4911 adapter->una_mbox64, adapter->una_mbox64_dma); 4912 out_free_irq: 4913 free_irq(adapter->host->irq, adapter); 4914 out_free_scb_list: 4915 kfree(adapter->scb_list); 4916 out_free_cmd_buffer: 4917 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4918 adapter->mega_buffer, adapter->buf_dma_handle); 4919 out_host_put: 4920 scsi_host_put(host); 4921 out_iounmap: 4922 if (flag & BOARD_MEMMAP) 4923 iounmap((void *)mega_baseport); 4924 out_release_region: 4925 if (flag & BOARD_MEMMAP) 4926 release_mem_region(tbase, 128); 4927 else 4928 release_region(mega_baseport, 16); 4929 out_disable_device: 4930 pci_disable_device(pdev); 4931 out: 4932 return error; 4933 } 4934 4935 static void 4936 __megaraid_shutdown(adapter_t *adapter) 4937 { 4938 u_char raw_mbox[sizeof(struct mbox_out)]; 4939 mbox_t *mbox = (mbox_t *)raw_mbox; 4940 int i; 4941 4942 /* Flush adapter cache */ 4943 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4944 raw_mbox[0] = FLUSH_ADAPTER; 4945 4946 free_irq(adapter->host->irq, adapter); 4947 4948 /* Issue a blocking (interrupts disabled) command to the card */ 4949 issue_scb_block(adapter, raw_mbox); 4950 4951 /* Flush disks cache */ 4952 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4953 raw_mbox[0] = FLUSH_SYSTEM; 4954 4955 /* Issue a blocking (interrupts disabled) command to the card */ 4956 issue_scb_block(adapter, raw_mbox); 4957 4958 if (atomic_read(&adapter->pend_cmds) > 0) 4959 printk(KERN_WARNING "megaraid: pending commands!!\n"); 4960 4961 /* 4962 * Have a delibrate delay to make sure all the caches are 4963 * actually flushed. 4964 */ 4965 for (i = 0; i <= 10; i++) 4966 mdelay(1000); 4967 } 4968 4969 static void 4970 megaraid_remove_one(struct pci_dev *pdev) 4971 { 4972 struct Scsi_Host *host = pci_get_drvdata(pdev); 4973 adapter_t *adapter = (adapter_t *)host->hostdata; 4974 char buf[12] = { 0 }; 4975 4976 scsi_remove_host(host); 4977 4978 __megaraid_shutdown(adapter); 4979 4980 /* Free our resources */ 4981 if (adapter->flag & BOARD_MEMMAP) { 4982 iounmap((void *)adapter->base); 4983 release_mem_region(adapter->host->base, 128); 4984 } else 4985 release_region(adapter->base, 16); 4986 4987 mega_free_sgl(adapter); 4988 4989 #ifdef CONFIG_PROC_FS 4990 if (adapter->controller_proc_dir_entry) { 4991 remove_proc_entry("stat", adapter->controller_proc_dir_entry); 4992 remove_proc_entry("config", 4993 adapter->controller_proc_dir_entry); 4994 remove_proc_entry("mailbox", 4995 adapter->controller_proc_dir_entry); 4996 #if MEGA_HAVE_ENH_PROC 4997 remove_proc_entry("rebuild-rate", 4998 adapter->controller_proc_dir_entry); 4999 remove_proc_entry("battery-status", 5000 adapter->controller_proc_dir_entry); 5001 5002 remove_proc_entry("diskdrives-ch0", 5003 adapter->controller_proc_dir_entry); 5004 remove_proc_entry("diskdrives-ch1", 5005 adapter->controller_proc_dir_entry); 5006 remove_proc_entry("diskdrives-ch2", 5007 adapter->controller_proc_dir_entry); 5008 remove_proc_entry("diskdrives-ch3", 5009 adapter->controller_proc_dir_entry); 5010 5011 remove_proc_entry("raiddrives-0-9", 5012 adapter->controller_proc_dir_entry); 5013 remove_proc_entry("raiddrives-10-19", 5014 adapter->controller_proc_dir_entry); 5015 remove_proc_entry("raiddrives-20-29", 5016 adapter->controller_proc_dir_entry); 5017 remove_proc_entry("raiddrives-30-39", 5018 adapter->controller_proc_dir_entry); 5019 #endif 5020 sprintf(buf, "hba%d", adapter->host->host_no); 5021 remove_proc_entry(buf, mega_proc_dir_entry); 5022 } 5023 #endif 5024 5025 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 5026 adapter->mega_buffer, adapter->buf_dma_handle); 5027 kfree(adapter->scb_list); 5028 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 5029 adapter->una_mbox64, adapter->una_mbox64_dma); 5030 5031 scsi_host_put(host); 5032 pci_disable_device(pdev); 5033 5034 hba_count--; 5035 } 5036 5037 static void 5038 megaraid_shutdown(struct pci_dev *pdev) 5039 { 5040 struct Scsi_Host *host = pci_get_drvdata(pdev); 5041 adapter_t *adapter = (adapter_t *)host->hostdata; 5042 5043 __megaraid_shutdown(adapter); 5044 } 5045 5046 static struct pci_device_id megaraid_pci_tbl[] = { 5047 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DISCOVERY, 5048 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5049 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4_DI, 5050 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT}, 5051 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4_QC_VERDE, 5052 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT}, 5053 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 5054 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5055 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 5056 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5057 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3, 5058 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5059 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 5060 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5061 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_AMI_MEGARAID3, 5062 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5063 {0,} 5064 }; 5065 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 5066 5067 static struct pci_driver megaraid_pci_driver = { 5068 .name = "megaraid", 5069 .id_table = megaraid_pci_tbl, 5070 .probe = megaraid_probe_one, 5071 .remove = __devexit_p(megaraid_remove_one), 5072 .shutdown = megaraid_shutdown, 5073 }; 5074 5075 static int __init megaraid_init(void) 5076 { 5077 int error; 5078 5079 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 5080 max_cmd_per_lun = MAX_CMD_PER_LUN; 5081 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 5082 max_mbox_busy_wait = MBOX_BUSY_WAIT; 5083 5084 #ifdef CONFIG_PROC_FS 5085 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root); 5086 if (!mega_proc_dir_entry) { 5087 printk(KERN_WARNING 5088 "megaraid: failed to create megaraid root\n"); 5089 } 5090 #endif 5091 error = pci_module_init(&megaraid_pci_driver); 5092 if (error) { 5093 #ifdef CONFIG_PROC_FS 5094 remove_proc_entry("megaraid", &proc_root); 5095 #endif 5096 return error; 5097 } 5098 5099 /* 5100 * Register the driver as a character device, for applications 5101 * to access it for ioctls. 5102 * First argument (major) to register_chrdev implies a dynamic 5103 * major number allocation. 5104 */ 5105 major = register_chrdev(0, "megadev", &megadev_fops); 5106 if (!major) { 5107 printk(KERN_WARNING 5108 "megaraid: failed to register char device\n"); 5109 } 5110 5111 return 0; 5112 } 5113 5114 static void __exit megaraid_exit(void) 5115 { 5116 /* 5117 * Unregister the character device interface to the driver. 5118 */ 5119 unregister_chrdev(major, "megadev"); 5120 5121 pci_unregister_driver(&megaraid_pci_driver); 5122 5123 #ifdef CONFIG_PROC_FS 5124 remove_proc_entry("megaraid", &proc_root); 5125 #endif 5126 } 5127 5128 module_init(megaraid_init); 5129 module_exit(megaraid_exit); 5130 5131 /* vi: set ts=8 sw=8 tw=78: */ 5132