1 /* 2 * 3 * Linux MegaRAID device driver 4 * 5 * Copyright (c) 2002 LSI Logic Corporation. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 * 12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved. 13 * - fixes 14 * - speed-ups (list handling fixes, issued_list, optimizations.) 15 * - lots of cleanups. 16 * 17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de> 18 * - new-style, hotplug-aware pci probing and scsi registration 19 * 20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju 21 * <Seokmann.Ju@lsil.com> 22 * 23 * Description: Linux device driver for LSI Logic MegaRAID controller 24 * 25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 26 * 518, 520, 531, 532 27 * 28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell, 29 * and others. Please send updates to the mailing list 30 * linux-scsi@vger.kernel.org . 31 * 32 */ 33 34 #include <linux/mm.h> 35 #include <linux/fs.h> 36 #include <linux/blkdev.h> 37 #include <asm/uaccess.h> 38 #include <asm/io.h> 39 #include <linux/completion.h> 40 #include <linux/delay.h> 41 #include <linux/proc_fs.h> 42 #include <linux/reboot.h> 43 #include <linux/module.h> 44 #include <linux/list.h> 45 #include <linux/interrupt.h> 46 #include <linux/pci.h> 47 #include <linux/init.h> 48 #include <linux/dma-mapping.h> 49 #include <scsi/scsicam.h> 50 51 #include "scsi.h" 52 #include <scsi/scsi_host.h> 53 54 #include "megaraid.h" 55 56 #define MEGARAID_MODULE_VERSION "2.00.4" 57 58 MODULE_AUTHOR ("sju@lsil.com"); 59 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver"); 60 MODULE_LICENSE ("GPL"); 61 MODULE_VERSION(MEGARAID_MODULE_VERSION); 62 63 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; 64 module_param(max_cmd_per_lun, uint, 0); 65 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)"); 66 67 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO; 68 module_param(max_sectors_per_io, ushort, 0); 69 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)"); 70 71 72 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; 73 module_param(max_mbox_busy_wait, ushort, 0); 74 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)"); 75 76 #define RDINDOOR(adapter) readl((adapter)->base + 0x20) 77 #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C) 78 #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20) 79 #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C) 80 81 /* 82 * Global variables 83 */ 84 85 static int hba_count; 86 static adapter_t *hba_soft_state[MAX_CONTROLLERS]; 87 static struct proc_dir_entry *mega_proc_dir_entry; 88 89 /* For controller re-ordering */ 90 static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; 91 92 /* 93 * The File Operations structure for the serial/ioctl interface of the driver 94 */ 95 static struct file_operations megadev_fops = { 96 .owner = THIS_MODULE, 97 .ioctl = megadev_ioctl, 98 .open = megadev_open, 99 }; 100 101 /* 102 * Array to structures for storing the information about the controllers. This 103 * information is sent to the user level applications, when they do an ioctl 104 * for this information. 105 */ 106 static struct mcontroller mcontroller[MAX_CONTROLLERS]; 107 108 /* The current driver version */ 109 static u32 driver_ver = 0x02000000; 110 111 /* major number used by the device for character interface */ 112 static int major; 113 114 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01) 115 116 117 /* 118 * Debug variable to print some diagnostic messages 119 */ 120 static int trace_level; 121 122 /** 123 * mega_setup_mailbox() 124 * @adapter - pointer to our soft state 125 * 126 * Allocates a 8 byte aligned memory for the handshake mailbox. 127 */ 128 static int 129 mega_setup_mailbox(adapter_t *adapter) 130 { 131 unsigned long align; 132 133 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev, 134 sizeof(mbox64_t), &adapter->una_mbox64_dma); 135 136 if( !adapter->una_mbox64 ) return -1; 137 138 adapter->mbox = &adapter->una_mbox64->mbox; 139 140 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & 141 (~0UL ^ 0xFUL)); 142 143 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); 144 145 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); 146 147 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; 148 149 /* 150 * Register the mailbox if the controller is an io-mapped controller 151 */ 152 if( adapter->flag & BOARD_IOMAP ) { 153 154 outb_p(adapter->mbox_dma & 0xFF, 155 adapter->host->io_port + MBOX_PORT0); 156 157 outb_p((adapter->mbox_dma >> 8) & 0xFF, 158 adapter->host->io_port + MBOX_PORT1); 159 160 outb_p((adapter->mbox_dma >> 16) & 0xFF, 161 adapter->host->io_port + MBOX_PORT2); 162 163 outb_p((adapter->mbox_dma >> 24) & 0xFF, 164 adapter->host->io_port + MBOX_PORT3); 165 166 outb_p(ENABLE_MBOX_BYTE, 167 adapter->host->io_port + ENABLE_MBOX_REGION); 168 169 irq_ack(adapter); 170 171 irq_enable(adapter); 172 } 173 174 return 0; 175 } 176 177 178 /* 179 * mega_query_adapter() 180 * @adapter - pointer to our soft state 181 * 182 * Issue the adapter inquiry commands to the controller and find out 183 * information and parameter about the devices attached 184 */ 185 static int 186 mega_query_adapter(adapter_t *adapter) 187 { 188 dma_addr_t prod_info_dma_handle; 189 mega_inquiry3 *inquiry3; 190 u8 raw_mbox[sizeof(struct mbox_out)]; 191 mbox_t *mbox; 192 int retval; 193 194 /* Initialize adapter inquiry mailbox */ 195 196 mbox = (mbox_t *)raw_mbox; 197 198 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 199 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 200 201 /* 202 * Try to issue Inquiry3 command 203 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and 204 * update enquiry3 structure 205 */ 206 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 207 208 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; 209 210 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 211 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ 212 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ 213 214 /* Issue a blocking command to the card */ 215 if ((retval = issue_scb_block(adapter, raw_mbox))) { 216 /* the adapter does not support 40ld */ 217 218 mraid_ext_inquiry *ext_inq; 219 mraid_inquiry *inq; 220 dma_addr_t dma_handle; 221 222 ext_inq = pci_alloc_consistent(adapter->dev, 223 sizeof(mraid_ext_inquiry), &dma_handle); 224 225 if( ext_inq == NULL ) return -1; 226 227 inq = &ext_inq->raid_inq; 228 229 mbox->m_out.xferaddr = (u32)dma_handle; 230 231 /*issue old 0x04 command to adapter */ 232 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ; 233 234 issue_scb_block(adapter, raw_mbox); 235 236 /* 237 * update Enquiry3 and ProductInfo structures with 238 * mraid_inquiry structure 239 */ 240 mega_8_to_40ld(inq, inquiry3, 241 (mega_product_info *)&adapter->product_info); 242 243 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry), 244 ext_inq, dma_handle); 245 246 } else { /*adapter supports 40ld */ 247 adapter->flag |= BOARD_40LD; 248 249 /* 250 * get product_info, which is static information and will be 251 * unchanged 252 */ 253 prod_info_dma_handle = pci_map_single(adapter->dev, (void *) 254 &adapter->product_info, 255 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 256 257 mbox->m_out.xferaddr = prod_info_dma_handle; 258 259 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 260 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ 261 262 if ((retval = issue_scb_block(adapter, raw_mbox))) 263 printk(KERN_WARNING 264 "megaraid: Product_info cmd failed with error: %d\n", 265 retval); 266 267 pci_unmap_single(adapter->dev, prod_info_dma_handle, 268 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 269 } 270 271 272 /* 273 * kernel scans the channels from 0 to <= max_channel 274 */ 275 adapter->host->max_channel = 276 adapter->product_info.nchannels + NVIRT_CHAN -1; 277 278 adapter->host->max_id = 16; /* max targets per channel */ 279 280 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */ 281 282 adapter->host->cmd_per_lun = max_cmd_per_lun; 283 284 adapter->numldrv = inquiry3->num_ldrv; 285 286 adapter->max_cmds = adapter->product_info.max_commands; 287 288 if(adapter->max_cmds > MAX_COMMANDS) 289 adapter->max_cmds = MAX_COMMANDS; 290 291 adapter->host->can_queue = adapter->max_cmds - 1; 292 293 /* 294 * Get the maximum number of scatter-gather elements supported by this 295 * firmware 296 */ 297 mega_get_max_sgl(adapter); 298 299 adapter->host->sg_tablesize = adapter->sglen; 300 301 302 /* use HP firmware and bios version encoding */ 303 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) { 304 sprintf (adapter->fw_version, "%c%d%d.%d%d", 305 adapter->product_info.fw_version[2], 306 adapter->product_info.fw_version[1] >> 8, 307 adapter->product_info.fw_version[1] & 0x0f, 308 adapter->product_info.fw_version[0] >> 8, 309 adapter->product_info.fw_version[0] & 0x0f); 310 sprintf (adapter->bios_version, "%c%d%d.%d%d", 311 adapter->product_info.bios_version[2], 312 adapter->product_info.bios_version[1] >> 8, 313 adapter->product_info.bios_version[1] & 0x0f, 314 adapter->product_info.bios_version[0] >> 8, 315 adapter->product_info.bios_version[0] & 0x0f); 316 } else { 317 memcpy(adapter->fw_version, 318 (char *)adapter->product_info.fw_version, 4); 319 adapter->fw_version[4] = 0; 320 321 memcpy(adapter->bios_version, 322 (char *)adapter->product_info.bios_version, 4); 323 324 adapter->bios_version[4] = 0; 325 } 326 327 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n", 328 adapter->fw_version, adapter->bios_version, adapter->numldrv); 329 330 /* 331 * Do we support extended (>10 bytes) cdbs 332 */ 333 adapter->support_ext_cdb = mega_support_ext_cdb(adapter); 334 if (adapter->support_ext_cdb) 335 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n"); 336 337 338 return 0; 339 } 340 341 /** 342 * mega_runpendq() 343 * @adapter - pointer to our soft state 344 * 345 * Runs through the list of pending requests. 346 */ 347 static inline void 348 mega_runpendq(adapter_t *adapter) 349 { 350 if(!list_empty(&adapter->pending_list)) 351 __mega_runpendq(adapter); 352 } 353 354 /* 355 * megaraid_queue() 356 * @scmd - Issue this scsi command 357 * @done - the callback hook into the scsi mid-layer 358 * 359 * The command queuing entry point for the mid-layer. 360 */ 361 static int 362 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *)) 363 { 364 adapter_t *adapter; 365 scb_t *scb; 366 int busy=0; 367 unsigned long flags; 368 369 adapter = (adapter_t *)scmd->device->host->hostdata; 370 371 scmd->scsi_done = done; 372 373 374 /* 375 * Allocate and build a SCB request 376 * busy flag will be set if mega_build_cmd() command could not 377 * allocate scb. We will return non-zero status in that case. 378 * NOTE: scb can be null even though certain commands completed 379 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would 380 * return 0 in that case. 381 */ 382 383 spin_lock_irqsave(&adapter->lock, flags); 384 scb = mega_build_cmd(adapter, scmd, &busy); 385 if (!scb) 386 goto out; 387 388 scb->state |= SCB_PENDQ; 389 list_add_tail(&scb->list, &adapter->pending_list); 390 391 /* 392 * Check if the HBA is in quiescent state, e.g., during a 393 * delete logical drive opertion. If it is, don't run 394 * the pending_list. 395 */ 396 if (atomic_read(&adapter->quiescent) == 0) 397 mega_runpendq(adapter); 398 399 busy = 0; 400 out: 401 spin_unlock_irqrestore(&adapter->lock, flags); 402 return busy; 403 } 404 405 /** 406 * mega_allocate_scb() 407 * @adapter - pointer to our soft state 408 * @cmd - scsi command from the mid-layer 409 * 410 * Allocate a SCB structure. This is the central structure for controller 411 * commands. 412 */ 413 static inline scb_t * 414 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd) 415 { 416 struct list_head *head = &adapter->free_list; 417 scb_t *scb; 418 419 /* Unlink command from Free List */ 420 if( !list_empty(head) ) { 421 422 scb = list_entry(head->next, scb_t, list); 423 424 list_del_init(head->next); 425 426 scb->state = SCB_ACTIVE; 427 scb->cmd = cmd; 428 scb->dma_type = MEGA_DMA_TYPE_NONE; 429 430 return scb; 431 } 432 433 return NULL; 434 } 435 436 /** 437 * mega_get_ldrv_num() 438 * @adapter - pointer to our soft state 439 * @cmd - scsi mid layer command 440 * @channel - channel on the controller 441 * 442 * Calculate the logical drive number based on the information in scsi command 443 * and the channel number. 444 */ 445 static inline int 446 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel) 447 { 448 int tgt; 449 int ldrv_num; 450 451 tgt = cmd->device->id; 452 453 if ( tgt > adapter->this_id ) 454 tgt--; /* we do not get inquires for initiator id */ 455 456 ldrv_num = (channel * 15) + tgt; 457 458 459 /* 460 * If we have a logical drive with boot enabled, project it first 461 */ 462 if( adapter->boot_ldrv_enabled ) { 463 if( ldrv_num == 0 ) { 464 ldrv_num = adapter->boot_ldrv; 465 } 466 else { 467 if( ldrv_num <= adapter->boot_ldrv ) { 468 ldrv_num--; 469 } 470 } 471 } 472 473 /* 474 * If "delete logical drive" feature is enabled on this controller. 475 * Do only if at least one delete logical drive operation was done. 476 * 477 * Also, after logical drive deletion, instead of logical drive number, 478 * the value returned should be 0x80+logical drive id. 479 * 480 * These is valid only for IO commands. 481 */ 482 483 if (adapter->support_random_del && adapter->read_ldidmap ) 484 switch (cmd->cmnd[0]) { 485 case READ_6: /* fall through */ 486 case WRITE_6: /* fall through */ 487 case READ_10: /* fall through */ 488 case WRITE_10: 489 ldrv_num += 0x80; 490 } 491 492 return ldrv_num; 493 } 494 495 /** 496 * mega_build_cmd() 497 * @adapter - pointer to our soft state 498 * @cmd - Prepare using this scsi command 499 * @busy - busy flag if no resources 500 * 501 * Prepares a command and scatter gather list for the controller. This routine 502 * also finds out if the commands is intended for a logical drive or a 503 * physical device and prepares the controller command accordingly. 504 * 505 * We also re-order the logical drives and physical devices based on their 506 * boot settings. 507 */ 508 static scb_t * 509 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy) 510 { 511 mega_ext_passthru *epthru; 512 mega_passthru *pthru; 513 scb_t *scb; 514 mbox_t *mbox; 515 long seg; 516 char islogical; 517 int max_ldrv_num; 518 int channel = 0; 519 int target = 0; 520 int ldrv_num = 0; /* logical drive number */ 521 522 523 /* 524 * filter the internal and ioctl commands 525 */ 526 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) { 527 return cmd->request_buffer; 528 } 529 530 531 /* 532 * We know what channels our logical drives are on - mega_find_card() 533 */ 534 islogical = adapter->logdrv_chan[cmd->device->channel]; 535 536 /* 537 * The theory: If physical drive is chosen for boot, all the physical 538 * devices are exported before the logical drives, otherwise physical 539 * devices are pushed after logical drives, in which case - Kernel sees 540 * the physical devices on virtual channel which is obviously converted 541 * to actual channel on the HBA. 542 */ 543 if( adapter->boot_pdrv_enabled ) { 544 if( islogical ) { 545 /* logical channel */ 546 channel = cmd->device->channel - 547 adapter->product_info.nchannels; 548 } 549 else { 550 /* this is physical channel */ 551 channel = cmd->device->channel; 552 target = cmd->device->id; 553 554 /* 555 * boot from a physical disk, that disk needs to be 556 * exposed first IF both the channels are SCSI, then 557 * booting from the second channel is not allowed. 558 */ 559 if( target == 0 ) { 560 target = adapter->boot_pdrv_tgt; 561 } 562 else if( target == adapter->boot_pdrv_tgt ) { 563 target = 0; 564 } 565 } 566 } 567 else { 568 if( islogical ) { 569 /* this is the logical channel */ 570 channel = cmd->device->channel; 571 } 572 else { 573 /* physical channel */ 574 channel = cmd->device->channel - NVIRT_CHAN; 575 target = cmd->device->id; 576 } 577 } 578 579 580 if(islogical) { 581 582 /* have just LUN 0 for each target on virtual channels */ 583 if (cmd->device->lun) { 584 cmd->result = (DID_BAD_TARGET << 16); 585 cmd->scsi_done(cmd); 586 return NULL; 587 } 588 589 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 590 591 592 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 593 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 594 595 /* 596 * max_ldrv_num increases by 0x80 if some logical drive was 597 * deleted. 598 */ 599 if(adapter->read_ldidmap) 600 max_ldrv_num += 0x80; 601 602 if(ldrv_num > max_ldrv_num ) { 603 cmd->result = (DID_BAD_TARGET << 16); 604 cmd->scsi_done(cmd); 605 return NULL; 606 } 607 608 } 609 else { 610 if( cmd->device->lun > 7) { 611 /* 612 * Do not support lun >7 for physically accessed 613 * devices 614 */ 615 cmd->result = (DID_BAD_TARGET << 16); 616 cmd->scsi_done(cmd); 617 return NULL; 618 } 619 } 620 621 /* 622 * 623 * Logical drive commands 624 * 625 */ 626 if(islogical) { 627 switch (cmd->cmnd[0]) { 628 case TEST_UNIT_READY: 629 #if MEGA_HAVE_CLUSTERING 630 /* 631 * Do we support clustering and is the support enabled 632 * If no, return success always 633 */ 634 if( !adapter->has_cluster ) { 635 cmd->result = (DID_OK << 16); 636 cmd->scsi_done(cmd); 637 return NULL; 638 } 639 640 if(!(scb = mega_allocate_scb(adapter, cmd))) { 641 *busy = 1; 642 return NULL; 643 } 644 645 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 646 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 647 scb->raw_mbox[3] = ldrv_num; 648 649 scb->dma_direction = PCI_DMA_NONE; 650 651 return scb; 652 #else 653 cmd->result = (DID_OK << 16); 654 cmd->scsi_done(cmd); 655 return NULL; 656 #endif 657 658 case MODE_SENSE: { 659 char *buf; 660 661 if (cmd->use_sg) { 662 struct scatterlist *sg; 663 664 sg = (struct scatterlist *)cmd->request_buffer; 665 buf = kmap_atomic(sg->page, KM_IRQ0) + 666 sg->offset; 667 } else 668 buf = cmd->request_buffer; 669 memset(buf, 0, cmd->cmnd[4]); 670 if (cmd->use_sg) { 671 struct scatterlist *sg; 672 673 sg = (struct scatterlist *)cmd->request_buffer; 674 kunmap_atomic(buf - sg->offset, KM_IRQ0); 675 } 676 cmd->result = (DID_OK << 16); 677 cmd->scsi_done(cmd); 678 return NULL; 679 } 680 681 case READ_CAPACITY: 682 case INQUIRY: 683 684 if(!(adapter->flag & (1L << cmd->device->channel))) { 685 686 printk(KERN_NOTICE 687 "scsi%d: scanning scsi channel %d ", 688 adapter->host->host_no, 689 cmd->device->channel); 690 printk("for logical drives.\n"); 691 692 adapter->flag |= (1L << cmd->device->channel); 693 } 694 695 /* Allocate a SCB and initialize passthru */ 696 if(!(scb = mega_allocate_scb(adapter, cmd))) { 697 *busy = 1; 698 return NULL; 699 } 700 pthru = scb->pthru; 701 702 mbox = (mbox_t *)scb->raw_mbox; 703 memset(mbox, 0, sizeof(scb->raw_mbox)); 704 memset(pthru, 0, sizeof(mega_passthru)); 705 706 pthru->timeout = 0; 707 pthru->ars = 1; 708 pthru->reqsenselen = 14; 709 pthru->islogical = 1; 710 pthru->logdrv = ldrv_num; 711 pthru->cdblen = cmd->cmd_len; 712 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 713 714 if( adapter->has_64bit_addr ) { 715 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 716 } 717 else { 718 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 719 } 720 721 scb->dma_direction = PCI_DMA_FROMDEVICE; 722 723 pthru->numsgelements = mega_build_sglist(adapter, scb, 724 &pthru->dataxferaddr, &pthru->dataxferlen); 725 726 mbox->m_out.xferaddr = scb->pthru_dma_addr; 727 728 return scb; 729 730 case READ_6: 731 case WRITE_6: 732 case READ_10: 733 case WRITE_10: 734 case READ_12: 735 case WRITE_12: 736 737 /* Allocate a SCB and initialize mailbox */ 738 if(!(scb = mega_allocate_scb(adapter, cmd))) { 739 *busy = 1; 740 return NULL; 741 } 742 mbox = (mbox_t *)scb->raw_mbox; 743 744 memset(mbox, 0, sizeof(scb->raw_mbox)); 745 mbox->m_out.logdrv = ldrv_num; 746 747 /* 748 * A little hack: 2nd bit is zero for all scsi read 749 * commands and is set for all scsi write commands 750 */ 751 if( adapter->has_64bit_addr ) { 752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 753 MEGA_MBOXCMD_LWRITE64: 754 MEGA_MBOXCMD_LREAD64 ; 755 } 756 else { 757 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 758 MEGA_MBOXCMD_LWRITE: 759 MEGA_MBOXCMD_LREAD ; 760 } 761 762 /* 763 * 6-byte READ(0x08) or WRITE(0x0A) cdb 764 */ 765 if( cmd->cmd_len == 6 ) { 766 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 767 mbox->m_out.lba = 768 ((u32)cmd->cmnd[1] << 16) | 769 ((u32)cmd->cmnd[2] << 8) | 770 (u32)cmd->cmnd[3]; 771 772 mbox->m_out.lba &= 0x1FFFFF; 773 774 #if MEGA_HAVE_STATS 775 /* 776 * Take modulo 0x80, since the logical drive 777 * number increases by 0x80 when a logical 778 * drive was deleted 779 */ 780 if (*cmd->cmnd == READ_6) { 781 adapter->nreads[ldrv_num%0x80]++; 782 adapter->nreadblocks[ldrv_num%0x80] += 783 mbox->m_out.numsectors; 784 } else { 785 adapter->nwrites[ldrv_num%0x80]++; 786 adapter->nwriteblocks[ldrv_num%0x80] += 787 mbox->m_out.numsectors; 788 } 789 #endif 790 } 791 792 /* 793 * 10-byte READ(0x28) or WRITE(0x2A) cdb 794 */ 795 if( cmd->cmd_len == 10 ) { 796 mbox->m_out.numsectors = 797 (u32)cmd->cmnd[8] | 798 ((u32)cmd->cmnd[7] << 8); 799 mbox->m_out.lba = 800 ((u32)cmd->cmnd[2] << 24) | 801 ((u32)cmd->cmnd[3] << 16) | 802 ((u32)cmd->cmnd[4] << 8) | 803 (u32)cmd->cmnd[5]; 804 805 #if MEGA_HAVE_STATS 806 if (*cmd->cmnd == READ_10) { 807 adapter->nreads[ldrv_num%0x80]++; 808 adapter->nreadblocks[ldrv_num%0x80] += 809 mbox->m_out.numsectors; 810 } else { 811 adapter->nwrites[ldrv_num%0x80]++; 812 adapter->nwriteblocks[ldrv_num%0x80] += 813 mbox->m_out.numsectors; 814 } 815 #endif 816 } 817 818 /* 819 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 820 */ 821 if( cmd->cmd_len == 12 ) { 822 mbox->m_out.lba = 823 ((u32)cmd->cmnd[2] << 24) | 824 ((u32)cmd->cmnd[3] << 16) | 825 ((u32)cmd->cmnd[4] << 8) | 826 (u32)cmd->cmnd[5]; 827 828 mbox->m_out.numsectors = 829 ((u32)cmd->cmnd[6] << 24) | 830 ((u32)cmd->cmnd[7] << 16) | 831 ((u32)cmd->cmnd[8] << 8) | 832 (u32)cmd->cmnd[9]; 833 834 #if MEGA_HAVE_STATS 835 if (*cmd->cmnd == READ_12) { 836 adapter->nreads[ldrv_num%0x80]++; 837 adapter->nreadblocks[ldrv_num%0x80] += 838 mbox->m_out.numsectors; 839 } else { 840 adapter->nwrites[ldrv_num%0x80]++; 841 adapter->nwriteblocks[ldrv_num%0x80] += 842 mbox->m_out.numsectors; 843 } 844 #endif 845 } 846 847 /* 848 * If it is a read command 849 */ 850 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 851 scb->dma_direction = PCI_DMA_FROMDEVICE; 852 } 853 else { 854 scb->dma_direction = PCI_DMA_TODEVICE; 855 } 856 857 /* Calculate Scatter-Gather info */ 858 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 859 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg); 860 861 return scb; 862 863 #if MEGA_HAVE_CLUSTERING 864 case RESERVE: /* Fall through */ 865 case RELEASE: 866 867 /* 868 * Do we support clustering and is the support enabled 869 */ 870 if( ! adapter->has_cluster ) { 871 872 cmd->result = (DID_BAD_TARGET << 16); 873 cmd->scsi_done(cmd); 874 return NULL; 875 } 876 877 /* Allocate a SCB and initialize mailbox */ 878 if(!(scb = mega_allocate_scb(adapter, cmd))) { 879 *busy = 1; 880 return NULL; 881 } 882 883 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 884 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? 885 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 886 887 scb->raw_mbox[3] = ldrv_num; 888 889 scb->dma_direction = PCI_DMA_NONE; 890 891 return scb; 892 #endif 893 894 default: 895 cmd->result = (DID_BAD_TARGET << 16); 896 cmd->scsi_done(cmd); 897 return NULL; 898 } 899 } 900 901 /* 902 * Passthru drive commands 903 */ 904 else { 905 /* Allocate a SCB and initialize passthru */ 906 if(!(scb = mega_allocate_scb(adapter, cmd))) { 907 *busy = 1; 908 return NULL; 909 } 910 911 mbox = (mbox_t *)scb->raw_mbox; 912 memset(mbox, 0, sizeof(scb->raw_mbox)); 913 914 if( adapter->support_ext_cdb ) { 915 916 epthru = mega_prepare_extpassthru(adapter, scb, cmd, 917 channel, target); 918 919 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 920 921 mbox->m_out.xferaddr = scb->epthru_dma_addr; 922 923 } 924 else { 925 926 pthru = mega_prepare_passthru(adapter, scb, cmd, 927 channel, target); 928 929 /* Initialize mailbox */ 930 if( adapter->has_64bit_addr ) { 931 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 932 } 933 else { 934 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 935 } 936 937 mbox->m_out.xferaddr = scb->pthru_dma_addr; 938 939 } 940 return scb; 941 } 942 return NULL; 943 } 944 945 946 /** 947 * mega_prepare_passthru() 948 * @adapter - pointer to our soft state 949 * @scb - our scsi control block 950 * @cmd - scsi command from the mid-layer 951 * @channel - actual channel on the controller 952 * @target - actual id on the controller. 953 * 954 * prepare a command for the scsi physical devices. 955 */ 956 static mega_passthru * 957 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 958 int channel, int target) 959 { 960 mega_passthru *pthru; 961 962 pthru = scb->pthru; 963 memset(pthru, 0, sizeof (mega_passthru)); 964 965 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 966 pthru->timeout = 2; 967 968 pthru->ars = 1; 969 pthru->reqsenselen = 14; 970 pthru->islogical = 0; 971 972 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 973 974 pthru->target = (adapter->flag & BOARD_40LD) ? 975 (channel << 4) | target : target; 976 977 pthru->cdblen = cmd->cmd_len; 978 pthru->logdrv = cmd->device->lun; 979 980 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 981 982 /* Not sure about the direction */ 983 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 984 985 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 986 switch (cmd->cmnd[0]) { 987 case INQUIRY: 988 case READ_CAPACITY: 989 if(!(adapter->flag & (1L << cmd->device->channel))) { 990 991 printk(KERN_NOTICE 992 "scsi%d: scanning scsi channel %d [P%d] ", 993 adapter->host->host_no, 994 cmd->device->channel, channel); 995 printk("for physical devices.\n"); 996 997 adapter->flag |= (1L << cmd->device->channel); 998 } 999 /* Fall through */ 1000 default: 1001 pthru->numsgelements = mega_build_sglist(adapter, scb, 1002 &pthru->dataxferaddr, &pthru->dataxferlen); 1003 break; 1004 } 1005 return pthru; 1006 } 1007 1008 1009 /** 1010 * mega_prepare_extpassthru() 1011 * @adapter - pointer to our soft state 1012 * @scb - our scsi control block 1013 * @cmd - scsi command from the mid-layer 1014 * @channel - actual channel on the controller 1015 * @target - actual id on the controller. 1016 * 1017 * prepare a command for the scsi physical devices. This rountine prepares 1018 * commands for devices which can take extended CDBs (>10 bytes) 1019 */ 1020 static mega_ext_passthru * 1021 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 1022 int channel, int target) 1023 { 1024 mega_ext_passthru *epthru; 1025 1026 epthru = scb->epthru; 1027 memset(epthru, 0, sizeof(mega_ext_passthru)); 1028 1029 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1030 epthru->timeout = 2; 1031 1032 epthru->ars = 1; 1033 epthru->reqsenselen = 14; 1034 epthru->islogical = 0; 1035 1036 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1037 epthru->target = (adapter->flag & BOARD_40LD) ? 1038 (channel << 4) | target : target; 1039 1040 epthru->cdblen = cmd->cmd_len; 1041 epthru->logdrv = cmd->device->lun; 1042 1043 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1044 1045 /* Not sure about the direction */ 1046 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 1047 1048 switch(cmd->cmnd[0]) { 1049 case INQUIRY: 1050 case READ_CAPACITY: 1051 if(!(adapter->flag & (1L << cmd->device->channel))) { 1052 1053 printk(KERN_NOTICE 1054 "scsi%d: scanning scsi channel %d [P%d] ", 1055 adapter->host->host_no, 1056 cmd->device->channel, channel); 1057 printk("for physical devices.\n"); 1058 1059 adapter->flag |= (1L << cmd->device->channel); 1060 } 1061 /* Fall through */ 1062 default: 1063 epthru->numsgelements = mega_build_sglist(adapter, scb, 1064 &epthru->dataxferaddr, &epthru->dataxferlen); 1065 break; 1066 } 1067 1068 return epthru; 1069 } 1070 1071 static void 1072 __mega_runpendq(adapter_t *adapter) 1073 { 1074 scb_t *scb; 1075 struct list_head *pos, *next; 1076 1077 /* Issue any pending commands to the card */ 1078 list_for_each_safe(pos, next, &adapter->pending_list) { 1079 1080 scb = list_entry(pos, scb_t, list); 1081 1082 if( !(scb->state & SCB_ISSUED) ) { 1083 1084 if( issue_scb(adapter, scb) != 0 ) 1085 return; 1086 } 1087 } 1088 1089 return; 1090 } 1091 1092 1093 /** 1094 * issue_scb() 1095 * @adapter - pointer to our soft state 1096 * @scb - scsi control block 1097 * 1098 * Post a command to the card if the mailbox is available, otherwise return 1099 * busy. We also take the scb from the pending list if the mailbox is 1100 * available. 1101 */ 1102 static int 1103 issue_scb(adapter_t *adapter, scb_t *scb) 1104 { 1105 volatile mbox64_t *mbox64 = adapter->mbox64; 1106 volatile mbox_t *mbox = adapter->mbox; 1107 unsigned int i = 0; 1108 1109 if(unlikely(mbox->m_in.busy)) { 1110 do { 1111 udelay(1); 1112 i++; 1113 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1114 1115 if(mbox->m_in.busy) return -1; 1116 } 1117 1118 /* Copy mailbox data into host structure */ 1119 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1120 sizeof(struct mbox_out)); 1121 1122 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1123 mbox->m_in.busy = 1; /* Set busy */ 1124 1125 1126 /* 1127 * Increment the pending queue counter 1128 */ 1129 atomic_inc(&adapter->pend_cmds); 1130 1131 switch (mbox->m_out.cmd) { 1132 case MEGA_MBOXCMD_LREAD64: 1133 case MEGA_MBOXCMD_LWRITE64: 1134 case MEGA_MBOXCMD_PASSTHRU64: 1135 case MEGA_MBOXCMD_EXTPTHRU: 1136 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1137 mbox64->xfer_segment_hi = 0; 1138 mbox->m_out.xferaddr = 0xFFFFFFFF; 1139 break; 1140 default: 1141 mbox64->xfer_segment_lo = 0; 1142 mbox64->xfer_segment_hi = 0; 1143 } 1144 1145 /* 1146 * post the command 1147 */ 1148 scb->state |= SCB_ISSUED; 1149 1150 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1151 mbox->m_in.poll = 0; 1152 mbox->m_in.ack = 0; 1153 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1154 } 1155 else { 1156 irq_enable(adapter); 1157 issue_command(adapter); 1158 } 1159 1160 return 0; 1161 } 1162 1163 /* 1164 * Wait until the controller's mailbox is available 1165 */ 1166 static inline int 1167 mega_busywait_mbox (adapter_t *adapter) 1168 { 1169 if (adapter->mbox->m_in.busy) 1170 return __mega_busywait_mbox(adapter); 1171 return 0; 1172 } 1173 1174 /** 1175 * issue_scb_block() 1176 * @adapter - pointer to our soft state 1177 * @raw_mbox - the mailbox 1178 * 1179 * Issue a scb in synchronous and non-interrupt mode 1180 */ 1181 static int 1182 issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1183 { 1184 volatile mbox64_t *mbox64 = adapter->mbox64; 1185 volatile mbox_t *mbox = adapter->mbox; 1186 u8 byte; 1187 1188 /* Wait until mailbox is free */ 1189 if(mega_busywait_mbox (adapter)) 1190 goto bug_blocked_mailbox; 1191 1192 /* Copy mailbox data into host structure */ 1193 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1194 mbox->m_out.cmdid = 0xFE; 1195 mbox->m_in.busy = 1; 1196 1197 switch (raw_mbox[0]) { 1198 case MEGA_MBOXCMD_LREAD64: 1199 case MEGA_MBOXCMD_LWRITE64: 1200 case MEGA_MBOXCMD_PASSTHRU64: 1201 case MEGA_MBOXCMD_EXTPTHRU: 1202 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1203 mbox64->xfer_segment_hi = 0; 1204 mbox->m_out.xferaddr = 0xFFFFFFFF; 1205 break; 1206 default: 1207 mbox64->xfer_segment_lo = 0; 1208 mbox64->xfer_segment_hi = 0; 1209 } 1210 1211 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1212 mbox->m_in.poll = 0; 1213 mbox->m_in.ack = 0; 1214 mbox->m_in.numstatus = 0xFF; 1215 mbox->m_in.status = 0xFF; 1216 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1217 1218 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1219 cpu_relax(); 1220 1221 mbox->m_in.numstatus = 0xFF; 1222 1223 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1224 cpu_relax(); 1225 1226 mbox->m_in.poll = 0; 1227 mbox->m_in.ack = 0x77; 1228 1229 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1230 1231 while(RDINDOOR(adapter) & 0x2) 1232 cpu_relax(); 1233 } 1234 else { 1235 irq_disable(adapter); 1236 issue_command(adapter); 1237 1238 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1239 cpu_relax(); 1240 1241 set_irq_state(adapter, byte); 1242 irq_enable(adapter); 1243 irq_ack(adapter); 1244 } 1245 1246 return mbox->m_in.status; 1247 1248 bug_blocked_mailbox: 1249 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n"); 1250 udelay (1000); 1251 return -1; 1252 } 1253 1254 1255 /** 1256 * megaraid_isr_iomapped() 1257 * @irq - irq 1258 * @devp - pointer to our soft state 1259 * @regs - unused 1260 * 1261 * Interrupt service routine for io-mapped controllers. 1262 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1263 * and service the completed commands. 1264 */ 1265 static irqreturn_t 1266 megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs) 1267 { 1268 adapter_t *adapter = devp; 1269 unsigned long flags; 1270 u8 status; 1271 u8 nstatus; 1272 u8 completed[MAX_FIRMWARE_STATUS]; 1273 u8 byte; 1274 int handled = 0; 1275 1276 1277 /* 1278 * loop till F/W has more commands for us to complete. 1279 */ 1280 spin_lock_irqsave(&adapter->lock, flags); 1281 1282 do { 1283 /* Check if a valid interrupt is pending */ 1284 byte = irq_state(adapter); 1285 if( (byte & VALID_INTR_BYTE) == 0 ) { 1286 /* 1287 * No more pending commands 1288 */ 1289 goto out_unlock; 1290 } 1291 set_irq_state(adapter, byte); 1292 1293 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1294 == 0xFF) 1295 cpu_relax(); 1296 adapter->mbox->m_in.numstatus = 0xFF; 1297 1298 status = adapter->mbox->m_in.status; 1299 1300 /* 1301 * decrement the pending queue counter 1302 */ 1303 atomic_sub(nstatus, &adapter->pend_cmds); 1304 1305 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1306 nstatus); 1307 1308 /* Acknowledge interrupt */ 1309 irq_ack(adapter); 1310 1311 mega_cmd_done(adapter, completed, nstatus, status); 1312 1313 mega_rundoneq(adapter); 1314 1315 handled = 1; 1316 1317 /* Loop through any pending requests */ 1318 if(atomic_read(&adapter->quiescent) == 0) { 1319 mega_runpendq(adapter); 1320 } 1321 1322 } while(1); 1323 1324 out_unlock: 1325 1326 spin_unlock_irqrestore(&adapter->lock, flags); 1327 1328 return IRQ_RETVAL(handled); 1329 } 1330 1331 1332 /** 1333 * megaraid_isr_memmapped() 1334 * @irq - irq 1335 * @devp - pointer to our soft state 1336 * @regs - unused 1337 * 1338 * Interrupt service routine for memory-mapped controllers. 1339 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1340 * and service the completed commands. 1341 */ 1342 static irqreturn_t 1343 megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs) 1344 { 1345 adapter_t *adapter = devp; 1346 unsigned long flags; 1347 u8 status; 1348 u32 dword = 0; 1349 u8 nstatus; 1350 u8 completed[MAX_FIRMWARE_STATUS]; 1351 int handled = 0; 1352 1353 1354 /* 1355 * loop till F/W has more commands for us to complete. 1356 */ 1357 spin_lock_irqsave(&adapter->lock, flags); 1358 1359 do { 1360 /* Check if a valid interrupt is pending */ 1361 dword = RDOUTDOOR(adapter); 1362 if(dword != 0x10001234) { 1363 /* 1364 * No more pending commands 1365 */ 1366 goto out_unlock; 1367 } 1368 WROUTDOOR(adapter, 0x10001234); 1369 1370 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1371 == 0xFF) { 1372 cpu_relax(); 1373 } 1374 adapter->mbox->m_in.numstatus = 0xFF; 1375 1376 status = adapter->mbox->m_in.status; 1377 1378 /* 1379 * decrement the pending queue counter 1380 */ 1381 atomic_sub(nstatus, &adapter->pend_cmds); 1382 1383 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1384 nstatus); 1385 1386 /* Acknowledge interrupt */ 1387 WRINDOOR(adapter, 0x2); 1388 1389 handled = 1; 1390 1391 while( RDINDOOR(adapter) & 0x02 ) cpu_relax(); 1392 1393 mega_cmd_done(adapter, completed, nstatus, status); 1394 1395 mega_rundoneq(adapter); 1396 1397 /* Loop through any pending requests */ 1398 if(atomic_read(&adapter->quiescent) == 0) { 1399 mega_runpendq(adapter); 1400 } 1401 1402 } while(1); 1403 1404 out_unlock: 1405 1406 spin_unlock_irqrestore(&adapter->lock, flags); 1407 1408 return IRQ_RETVAL(handled); 1409 } 1410 /** 1411 * mega_cmd_done() 1412 * @adapter - pointer to our soft state 1413 * @completed - array of ids of completed commands 1414 * @nstatus - number of completed commands 1415 * @status - status of the last command completed 1416 * 1417 * Complete the comamnds and call the scsi mid-layer callback hooks. 1418 */ 1419 static void 1420 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1421 { 1422 mega_ext_passthru *epthru = NULL; 1423 struct scatterlist *sgl; 1424 Scsi_Cmnd *cmd = NULL; 1425 mega_passthru *pthru = NULL; 1426 mbox_t *mbox = NULL; 1427 u8 c; 1428 scb_t *scb; 1429 int islogical; 1430 int cmdid; 1431 int i; 1432 1433 /* 1434 * for all the commands completed, call the mid-layer callback routine 1435 * and free the scb. 1436 */ 1437 for( i = 0; i < nstatus; i++ ) { 1438 1439 cmdid = completed[i]; 1440 1441 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1442 scb = &adapter->int_scb; 1443 cmd = scb->cmd; 1444 mbox = (mbox_t *)scb->raw_mbox; 1445 1446 /* 1447 * Internal command interface do not fire the extended 1448 * passthru or 64-bit passthru 1449 */ 1450 pthru = scb->pthru; 1451 1452 } 1453 else { 1454 scb = &adapter->scb_list[cmdid]; 1455 1456 /* 1457 * Make sure f/w has completed a valid command 1458 */ 1459 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1460 printk(KERN_CRIT 1461 "megaraid: invalid command "); 1462 printk("Id %d, scb->state:%x, scsi cmd:%p\n", 1463 cmdid, scb->state, scb->cmd); 1464 1465 continue; 1466 } 1467 1468 /* 1469 * Was a abort issued for this command 1470 */ 1471 if( scb->state & SCB_ABORT ) { 1472 1473 printk(KERN_WARNING 1474 "megaraid: aborted cmd %lx[%x] complete.\n", 1475 scb->cmd->serial_number, scb->idx); 1476 1477 scb->cmd->result = (DID_ABORT << 16); 1478 1479 list_add_tail(SCSI_LIST(scb->cmd), 1480 &adapter->completed_list); 1481 1482 mega_free_scb(adapter, scb); 1483 1484 continue; 1485 } 1486 1487 /* 1488 * Was a reset issued for this command 1489 */ 1490 if( scb->state & SCB_RESET ) { 1491 1492 printk(KERN_WARNING 1493 "megaraid: reset cmd %lx[%x] complete.\n", 1494 scb->cmd->serial_number, scb->idx); 1495 1496 scb->cmd->result = (DID_RESET << 16); 1497 1498 list_add_tail(SCSI_LIST(scb->cmd), 1499 &adapter->completed_list); 1500 1501 mega_free_scb (adapter, scb); 1502 1503 continue; 1504 } 1505 1506 cmd = scb->cmd; 1507 pthru = scb->pthru; 1508 epthru = scb->epthru; 1509 mbox = (mbox_t *)scb->raw_mbox; 1510 1511 #if MEGA_HAVE_STATS 1512 { 1513 1514 int logdrv = mbox->m_out.logdrv; 1515 1516 islogical = adapter->logdrv_chan[cmd->channel]; 1517 /* 1518 * Maintain an error counter for the logical drive. 1519 * Some application like SNMP agent need such 1520 * statistics 1521 */ 1522 if( status && islogical && (cmd->cmnd[0] == READ_6 || 1523 cmd->cmnd[0] == READ_10 || 1524 cmd->cmnd[0] == READ_12)) { 1525 /* 1526 * Logical drive number increases by 0x80 when 1527 * a logical drive is deleted 1528 */ 1529 adapter->rd_errors[logdrv%0x80]++; 1530 } 1531 1532 if( status && islogical && (cmd->cmnd[0] == WRITE_6 || 1533 cmd->cmnd[0] == WRITE_10 || 1534 cmd->cmnd[0] == WRITE_12)) { 1535 /* 1536 * Logical drive number increases by 0x80 when 1537 * a logical drive is deleted 1538 */ 1539 adapter->wr_errors[logdrv%0x80]++; 1540 } 1541 1542 } 1543 #endif 1544 } 1545 1546 /* 1547 * Do not return the presence of hard disk on the channel so, 1548 * inquiry sent, and returned data==hard disk or removable 1549 * hard disk and not logical, request should return failure! - 1550 * PJ 1551 */ 1552 islogical = adapter->logdrv_chan[cmd->device->channel]; 1553 if( cmd->cmnd[0] == INQUIRY && !islogical ) { 1554 1555 if( cmd->use_sg ) { 1556 sgl = (struct scatterlist *) 1557 cmd->request_buffer; 1558 1559 if( sgl->page ) { 1560 c = *(unsigned char *) 1561 page_address((&sgl[0])->page) + 1562 (&sgl[0])->offset; 1563 } 1564 else { 1565 printk(KERN_WARNING 1566 "megaraid: invalid sg.\n"); 1567 c = 0; 1568 } 1569 } 1570 else { 1571 c = *(u8 *)cmd->request_buffer; 1572 } 1573 1574 if(IS_RAID_CH(adapter, cmd->device->channel) && 1575 ((c & 0x1F ) == TYPE_DISK)) { 1576 status = 0xF0; 1577 } 1578 } 1579 1580 /* clear result; otherwise, success returns corrupt value */ 1581 cmd->result = 0; 1582 1583 /* Convert MegaRAID status to Linux error code */ 1584 switch (status) { 1585 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1586 cmd->result |= (DID_OK << 16); 1587 break; 1588 1589 case 0x02: /* ERROR_ABORTED, i.e. 1590 SCSI_STATUS_CHECK_CONDITION */ 1591 1592 /* set sense_buffer and result fields */ 1593 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1594 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1595 1596 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1597 14); 1598 1599 cmd->result = (DRIVER_SENSE << 24) | 1600 (DID_OK << 16) | 1601 (CHECK_CONDITION << 1); 1602 } 1603 else { 1604 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1605 1606 memcpy(cmd->sense_buffer, 1607 epthru->reqsensearea, 14); 1608 1609 cmd->result = (DRIVER_SENSE << 24) | 1610 (DID_OK << 16) | 1611 (CHECK_CONDITION << 1); 1612 } else { 1613 cmd->sense_buffer[0] = 0x70; 1614 cmd->sense_buffer[2] = ABORTED_COMMAND; 1615 cmd->result |= (CHECK_CONDITION << 1); 1616 } 1617 } 1618 break; 1619 1620 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1621 SCSI_STATUS_BUSY */ 1622 cmd->result |= (DID_BUS_BUSY << 16) | status; 1623 break; 1624 1625 default: 1626 #if MEGA_HAVE_CLUSTERING 1627 /* 1628 * If TEST_UNIT_READY fails, we know 1629 * MEGA_RESERVATION_STATUS failed 1630 */ 1631 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1632 cmd->result |= (DID_ERROR << 16) | 1633 (RESERVATION_CONFLICT << 1); 1634 } 1635 else 1636 /* 1637 * Error code returned is 1 if Reserve or Release 1638 * failed or the input parameter is invalid 1639 */ 1640 if( status == 1 && 1641 (cmd->cmnd[0] == RESERVE || 1642 cmd->cmnd[0] == RELEASE) ) { 1643 1644 cmd->result |= (DID_ERROR << 16) | 1645 (RESERVATION_CONFLICT << 1); 1646 } 1647 else 1648 #endif 1649 cmd->result |= (DID_BAD_TARGET << 16)|status; 1650 } 1651 1652 /* 1653 * Only free SCBs for the commands coming down from the 1654 * mid-layer, not for which were issued internally 1655 * 1656 * For internal command, restore the status returned by the 1657 * firmware so that user can interpret it. 1658 */ 1659 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1660 cmd->result = status; 1661 1662 /* 1663 * Remove the internal command from the pending list 1664 */ 1665 list_del_init(&scb->list); 1666 scb->state = SCB_FREE; 1667 } 1668 else { 1669 mega_free_scb(adapter, scb); 1670 } 1671 1672 /* Add Scsi_Command to end of completed queue */ 1673 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1674 } 1675 } 1676 1677 1678 /* 1679 * mega_runpendq() 1680 * 1681 * Run through the list of completed requests and finish it 1682 */ 1683 static void 1684 mega_rundoneq (adapter_t *adapter) 1685 { 1686 Scsi_Cmnd *cmd; 1687 struct list_head *pos; 1688 1689 list_for_each(pos, &adapter->completed_list) { 1690 1691 struct scsi_pointer* spos = (struct scsi_pointer *)pos; 1692 1693 cmd = list_entry(spos, Scsi_Cmnd, SCp); 1694 cmd->scsi_done(cmd); 1695 } 1696 1697 INIT_LIST_HEAD(&adapter->completed_list); 1698 } 1699 1700 1701 /* 1702 * Free a SCB structure 1703 * Note: We assume the scsi commands associated with this scb is not free yet. 1704 */ 1705 static void 1706 mega_free_scb(adapter_t *adapter, scb_t *scb) 1707 { 1708 unsigned long length; 1709 1710 switch( scb->dma_type ) { 1711 1712 case MEGA_DMA_TYPE_NONE: 1713 break; 1714 1715 case MEGA_BULK_DATA: 1716 if (scb->cmd->use_sg == 0) 1717 length = scb->cmd->request_bufflen; 1718 else { 1719 struct scatterlist *sgl = 1720 (struct scatterlist *)scb->cmd->request_buffer; 1721 length = sgl->length; 1722 } 1723 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata, 1724 length, scb->dma_direction); 1725 break; 1726 1727 case MEGA_SGLIST: 1728 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer, 1729 scb->cmd->use_sg, scb->dma_direction); 1730 break; 1731 1732 default: 1733 break; 1734 } 1735 1736 /* 1737 * Remove from the pending list 1738 */ 1739 list_del_init(&scb->list); 1740 1741 /* Link the scb back into free list */ 1742 scb->state = SCB_FREE; 1743 scb->cmd = NULL; 1744 1745 list_add(&scb->list, &adapter->free_list); 1746 } 1747 1748 1749 static int 1750 __mega_busywait_mbox (adapter_t *adapter) 1751 { 1752 volatile mbox_t *mbox = adapter->mbox; 1753 long counter; 1754 1755 for (counter = 0; counter < 10000; counter++) { 1756 if (!mbox->m_in.busy) 1757 return 0; 1758 udelay(100); yield(); 1759 } 1760 return -1; /* give up after 1 second */ 1761 } 1762 1763 /* 1764 * Copies data to SGLIST 1765 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1766 */ 1767 static int 1768 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1769 { 1770 struct scatterlist *sgl; 1771 struct page *page; 1772 unsigned long offset; 1773 unsigned int length; 1774 Scsi_Cmnd *cmd; 1775 int sgcnt; 1776 int idx; 1777 1778 cmd = scb->cmd; 1779 1780 /* Scatter-gather not used */ 1781 if( cmd->use_sg == 0 || (cmd->use_sg == 1 && 1782 !adapter->has_64bit_addr)) { 1783 1784 if (cmd->use_sg == 0) { 1785 page = virt_to_page(cmd->request_buffer); 1786 offset = offset_in_page(cmd->request_buffer); 1787 length = cmd->request_bufflen; 1788 } else { 1789 sgl = (struct scatterlist *)cmd->request_buffer; 1790 page = sgl->page; 1791 offset = sgl->offset; 1792 length = sgl->length; 1793 } 1794 1795 scb->dma_h_bulkdata = pci_map_page(adapter->dev, 1796 page, offset, 1797 length, 1798 scb->dma_direction); 1799 scb->dma_type = MEGA_BULK_DATA; 1800 1801 /* 1802 * We need to handle special 64-bit commands that need a 1803 * minimum of 1 SG 1804 */ 1805 if( adapter->has_64bit_addr ) { 1806 scb->sgl64[0].address = scb->dma_h_bulkdata; 1807 scb->sgl64[0].length = length; 1808 *buf = (u32)scb->sgl_dma_addr; 1809 *len = (u32)length; 1810 return 1; 1811 } 1812 else { 1813 *buf = (u32)scb->dma_h_bulkdata; 1814 *len = (u32)length; 1815 } 1816 return 0; 1817 } 1818 1819 sgl = (struct scatterlist *)cmd->request_buffer; 1820 1821 /* 1822 * Copy Scatter-Gather list info into controller structure. 1823 * 1824 * The number of sg elements returned must not exceed our limit 1825 */ 1826 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg, 1827 scb->dma_direction); 1828 1829 scb->dma_type = MEGA_SGLIST; 1830 1831 if( sgcnt > adapter->sglen ) BUG(); 1832 1833 *len = 0; 1834 1835 for( idx = 0; idx < sgcnt; idx++, sgl++ ) { 1836 1837 if( adapter->has_64bit_addr ) { 1838 scb->sgl64[idx].address = sg_dma_address(sgl); 1839 *len += scb->sgl64[idx].length = sg_dma_len(sgl); 1840 } 1841 else { 1842 scb->sgl[idx].address = sg_dma_address(sgl); 1843 *len += scb->sgl[idx].length = sg_dma_len(sgl); 1844 } 1845 } 1846 1847 /* Reset pointer and length fields */ 1848 *buf = scb->sgl_dma_addr; 1849 1850 /* Return count of SG requests */ 1851 return sgcnt; 1852 } 1853 1854 1855 /* 1856 * mega_8_to_40ld() 1857 * 1858 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1859 * Enquiry3 structures for later use 1860 */ 1861 static void 1862 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1863 mega_product_info *product_info) 1864 { 1865 int i; 1866 1867 product_info->max_commands = inquiry->adapter_info.max_commands; 1868 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1869 product_info->nchannels = inquiry->adapter_info.nchannels; 1870 1871 for (i = 0; i < 4; i++) { 1872 product_info->fw_version[i] = 1873 inquiry->adapter_info.fw_version[i]; 1874 1875 product_info->bios_version[i] = 1876 inquiry->adapter_info.bios_version[i]; 1877 } 1878 enquiry3->cache_flush_interval = 1879 inquiry->adapter_info.cache_flush_interval; 1880 1881 product_info->dram_size = inquiry->adapter_info.dram_size; 1882 1883 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1884 1885 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1886 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1887 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1888 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1889 } 1890 1891 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1892 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1893 } 1894 1895 static inline void 1896 mega_free_sgl(adapter_t *adapter) 1897 { 1898 scb_t *scb; 1899 int i; 1900 1901 for(i = 0; i < adapter->max_cmds; i++) { 1902 1903 scb = &adapter->scb_list[i]; 1904 1905 if( scb->sgl64 ) { 1906 pci_free_consistent(adapter->dev, 1907 sizeof(mega_sgl64) * adapter->sglen, 1908 scb->sgl64, 1909 scb->sgl_dma_addr); 1910 1911 scb->sgl64 = NULL; 1912 } 1913 1914 if( scb->pthru ) { 1915 pci_free_consistent(adapter->dev, sizeof(mega_passthru), 1916 scb->pthru, scb->pthru_dma_addr); 1917 1918 scb->pthru = NULL; 1919 } 1920 1921 if( scb->epthru ) { 1922 pci_free_consistent(adapter->dev, 1923 sizeof(mega_ext_passthru), 1924 scb->epthru, scb->epthru_dma_addr); 1925 1926 scb->epthru = NULL; 1927 } 1928 1929 } 1930 } 1931 1932 1933 /* 1934 * Get information about the card/driver 1935 */ 1936 const char * 1937 megaraid_info(struct Scsi_Host *host) 1938 { 1939 static char buffer[512]; 1940 adapter_t *adapter; 1941 1942 adapter = (adapter_t *)host->hostdata; 1943 1944 sprintf (buffer, 1945 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1946 adapter->fw_version, adapter->product_info.max_commands, 1947 adapter->host->max_id, adapter->host->max_channel, 1948 adapter->host->max_lun); 1949 return buffer; 1950 } 1951 1952 /* 1953 * Abort a previous SCSI request. Only commands on the pending list can be 1954 * aborted. All the commands issued to the F/W must complete. 1955 */ 1956 static int 1957 megaraid_abort(Scsi_Cmnd *cmd) 1958 { 1959 adapter_t *adapter; 1960 int rval; 1961 1962 adapter = (adapter_t *)cmd->device->host->hostdata; 1963 1964 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1965 1966 /* 1967 * This is required here to complete any completed requests 1968 * to be communicated over to the mid layer. 1969 */ 1970 mega_rundoneq(adapter); 1971 1972 return rval; 1973 } 1974 1975 1976 static int 1977 megaraid_reset(struct scsi_cmnd *cmd) 1978 { 1979 adapter_t *adapter; 1980 megacmd_t mc; 1981 int rval; 1982 1983 adapter = (adapter_t *)cmd->device->host->hostdata; 1984 1985 #if MEGA_HAVE_CLUSTERING 1986 mc.cmd = MEGA_CLUSTER_CMD; 1987 mc.opcode = MEGA_RESET_RESERVATIONS; 1988 1989 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1990 printk(KERN_WARNING 1991 "megaraid: reservation reset failed.\n"); 1992 } 1993 else { 1994 printk(KERN_INFO "megaraid: reservation reset.\n"); 1995 } 1996 #endif 1997 1998 spin_lock_irq(&adapter->lock); 1999 2000 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 2001 2002 /* 2003 * This is required here to complete any completed requests 2004 * to be communicated over to the mid layer. 2005 */ 2006 mega_rundoneq(adapter); 2007 spin_unlock_irq(&adapter->lock); 2008 2009 return rval; 2010 } 2011 2012 /** 2013 * megaraid_abort_and_reset() 2014 * @adapter - megaraid soft state 2015 * @cmd - scsi command to be aborted or reset 2016 * @aor - abort or reset flag 2017 * 2018 * Try to locate the scsi command in the pending queue. If found and is not 2019 * issued to the controller, abort/reset it. Otherwise return failure 2020 */ 2021 static int 2022 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor) 2023 { 2024 struct list_head *pos, *next; 2025 scb_t *scb; 2026 2027 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n", 2028 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number, 2029 cmd->cmnd[0], cmd->device->channel, 2030 cmd->device->id, cmd->device->lun); 2031 2032 if(list_empty(&adapter->pending_list)) 2033 return FALSE; 2034 2035 list_for_each_safe(pos, next, &adapter->pending_list) { 2036 2037 scb = list_entry(pos, scb_t, list); 2038 2039 if (scb->cmd == cmd) { /* Found command */ 2040 2041 scb->state |= aor; 2042 2043 /* 2044 * Check if this command has firmare owenership. If 2045 * yes, we cannot reset this command. Whenever, f/w 2046 * completes this command, we will return appropriate 2047 * status from ISR. 2048 */ 2049 if( scb->state & SCB_ISSUED ) { 2050 2051 printk(KERN_WARNING 2052 "megaraid: %s-%lx[%x], fw owner.\n", 2053 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2054 cmd->serial_number, scb->idx); 2055 2056 return FALSE; 2057 } 2058 else { 2059 2060 /* 2061 * Not yet issued! Remove from the pending 2062 * list 2063 */ 2064 printk(KERN_WARNING 2065 "megaraid: %s-%lx[%x], driver owner.\n", 2066 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2067 cmd->serial_number, scb->idx); 2068 2069 mega_free_scb(adapter, scb); 2070 2071 if( aor == SCB_ABORT ) { 2072 cmd->result = (DID_ABORT << 16); 2073 } 2074 else { 2075 cmd->result = (DID_RESET << 16); 2076 } 2077 2078 list_add_tail(SCSI_LIST(cmd), 2079 &adapter->completed_list); 2080 2081 return TRUE; 2082 } 2083 } 2084 } 2085 2086 return FALSE; 2087 } 2088 2089 static inline int 2090 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2091 { 2092 *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL); 2093 2094 if( *pdev == NULL ) return -1; 2095 2096 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2097 2098 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) { 2099 kfree(*pdev); 2100 return -1; 2101 } 2102 2103 return 0; 2104 } 2105 2106 static inline void 2107 free_local_pdev(struct pci_dev *pdev) 2108 { 2109 kfree(pdev); 2110 } 2111 2112 /** 2113 * mega_allocate_inquiry() 2114 * @dma_handle - handle returned for dma address 2115 * @pdev - handle to pci device 2116 * 2117 * allocates memory for inquiry structure 2118 */ 2119 static inline void * 2120 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2121 { 2122 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2123 } 2124 2125 2126 static inline void 2127 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2128 { 2129 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2130 } 2131 2132 2133 #ifdef CONFIG_PROC_FS 2134 /* Following code handles /proc fs */ 2135 2136 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \ 2137 S_IRUSR | S_IFREG, \ 2138 controller_proc_dir_entry, \ 2139 func, adapter) 2140 2141 /** 2142 * mega_create_proc_entry() 2143 * @index - index in soft state array 2144 * @parent - parent node for this /proc entry 2145 * 2146 * Creates /proc entries for our controllers. 2147 */ 2148 static void 2149 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2150 { 2151 struct proc_dir_entry *controller_proc_dir_entry = NULL; 2152 u8 string[64] = { 0 }; 2153 adapter_t *adapter = hba_soft_state[index]; 2154 2155 sprintf(string, "hba%d", adapter->host->host_no); 2156 2157 controller_proc_dir_entry = 2158 adapter->controller_proc_dir_entry = proc_mkdir(string, parent); 2159 2160 if(!controller_proc_dir_entry) { 2161 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n"); 2162 return; 2163 } 2164 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config); 2165 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat); 2166 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox); 2167 #if MEGA_HAVE_ENH_PROC 2168 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate); 2169 adapter->proc_battery = CREATE_READ_PROC("battery-status", 2170 proc_battery); 2171 2172 /* 2173 * Display each physical drive on its channel 2174 */ 2175 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0", 2176 proc_pdrv_ch0); 2177 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1", 2178 proc_pdrv_ch1); 2179 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2", 2180 proc_pdrv_ch2); 2181 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3", 2182 proc_pdrv_ch3); 2183 2184 /* 2185 * Display a set of up to 10 logical drive through each of following 2186 * /proc entries 2187 */ 2188 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9", 2189 proc_rdrv_10); 2190 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19", 2191 proc_rdrv_20); 2192 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29", 2193 proc_rdrv_30); 2194 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39", 2195 proc_rdrv_40); 2196 #endif 2197 } 2198 2199 2200 /** 2201 * proc_read_config() 2202 * @page - buffer to write the data in 2203 * @start - where the actual data has been written in page 2204 * @offset - same meaning as the read system call 2205 * @count - same meaning as the read system call 2206 * @eof - set if no more data needs to be returned 2207 * @data - pointer to our soft state 2208 * 2209 * Display configuration information about the controller. 2210 */ 2211 static int 2212 proc_read_config(char *page, char **start, off_t offset, int count, int *eof, 2213 void *data) 2214 { 2215 2216 adapter_t *adapter = (adapter_t *)data; 2217 int len = 0; 2218 2219 len += sprintf(page+len, "%s", MEGARAID_VERSION); 2220 2221 if(adapter->product_info.product_name[0]) 2222 len += sprintf(page+len, "%s\n", 2223 adapter->product_info.product_name); 2224 2225 len += sprintf(page+len, "Controller Type: "); 2226 2227 if( adapter->flag & BOARD_MEMMAP ) { 2228 len += sprintf(page+len, 2229 "438/466/467/471/493/518/520/531/532\n"); 2230 } 2231 else { 2232 len += sprintf(page+len, 2233 "418/428/434\n"); 2234 } 2235 2236 if(adapter->flag & BOARD_40LD) { 2237 len += sprintf(page+len, 2238 "Controller Supports 40 Logical Drives\n"); 2239 } 2240 2241 if(adapter->flag & BOARD_64BIT) { 2242 len += sprintf(page+len, 2243 "Controller capable of 64-bit memory addressing\n"); 2244 } 2245 if( adapter->has_64bit_addr ) { 2246 len += sprintf(page+len, 2247 "Controller using 64-bit memory addressing\n"); 2248 } 2249 else { 2250 len += sprintf(page+len, 2251 "Controller is not using 64-bit memory addressing\n"); 2252 } 2253 2254 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base, 2255 adapter->host->irq); 2256 2257 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n", 2258 adapter->numldrv, adapter->product_info.nchannels); 2259 2260 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n", 2261 adapter->fw_version, adapter->bios_version, 2262 adapter->product_info.dram_size); 2263 2264 len += sprintf(page+len, 2265 "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2266 adapter->product_info.max_commands, adapter->max_cmds); 2267 2268 len += sprintf(page+len, "support_ext_cdb = %d\n", 2269 adapter->support_ext_cdb); 2270 len += sprintf(page+len, "support_random_del = %d\n", 2271 adapter->support_random_del); 2272 len += sprintf(page+len, "boot_ldrv_enabled = %d\n", 2273 adapter->boot_ldrv_enabled); 2274 len += sprintf(page+len, "boot_ldrv = %d\n", 2275 adapter->boot_ldrv); 2276 len += sprintf(page+len, "boot_pdrv_enabled = %d\n", 2277 adapter->boot_pdrv_enabled); 2278 len += sprintf(page+len, "boot_pdrv_ch = %d\n", 2279 adapter->boot_pdrv_ch); 2280 len += sprintf(page+len, "boot_pdrv_tgt = %d\n", 2281 adapter->boot_pdrv_tgt); 2282 len += sprintf(page+len, "quiescent = %d\n", 2283 atomic_read(&adapter->quiescent)); 2284 len += sprintf(page+len, "has_cluster = %d\n", 2285 adapter->has_cluster); 2286 2287 len += sprintf(page+len, "\nModule Parameters:\n"); 2288 len += sprintf(page+len, "max_cmd_per_lun = %d\n", 2289 max_cmd_per_lun); 2290 len += sprintf(page+len, "max_sectors_per_io = %d\n", 2291 max_sectors_per_io); 2292 2293 *eof = 1; 2294 2295 return len; 2296 } 2297 2298 2299 2300 /** 2301 * proc_read_stat() 2302 * @page - buffer to write the data in 2303 * @start - where the actual data has been written in page 2304 * @offset - same meaning as the read system call 2305 * @count - same meaning as the read system call 2306 * @eof - set if no more data needs to be returned 2307 * @data - pointer to our soft state 2308 * 2309 * Diaplay statistical information about the I/O activity. 2310 */ 2311 static int 2312 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof, 2313 void *data) 2314 { 2315 adapter_t *adapter; 2316 int len; 2317 int i; 2318 2319 i = 0; /* avoid compilation warnings */ 2320 len = 0; 2321 adapter = (adapter_t *)data; 2322 2323 len = sprintf(page, "Statistical Information for this controller\n"); 2324 len += sprintf(page+len, "pend_cmds = %d\n", 2325 atomic_read(&adapter->pend_cmds)); 2326 #if MEGA_HAVE_STATS 2327 for(i = 0; i < adapter->numldrv; i++) { 2328 len += sprintf(page+len, "Logical Drive %d:\n", i); 2329 2330 len += sprintf(page+len, 2331 "\tReads Issued = %lu, Writes Issued = %lu\n", 2332 adapter->nreads[i], adapter->nwrites[i]); 2333 2334 len += sprintf(page+len, 2335 "\tSectors Read = %lu, Sectors Written = %lu\n", 2336 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2337 2338 len += sprintf(page+len, 2339 "\tRead errors = %lu, Write errors = %lu\n\n", 2340 adapter->rd_errors[i], adapter->wr_errors[i]); 2341 } 2342 #else 2343 len += sprintf(page+len, 2344 "IO and error counters not compiled in driver.\n"); 2345 #endif 2346 2347 *eof = 1; 2348 2349 return len; 2350 } 2351 2352 2353 /** 2354 * proc_read_mbox() 2355 * @page - buffer to write the data in 2356 * @start - where the actual data has been written in page 2357 * @offset - same meaning as the read system call 2358 * @count - same meaning as the read system call 2359 * @eof - set if no more data needs to be returned 2360 * @data - pointer to our soft state 2361 * 2362 * Display mailbox information for the last command issued. This information 2363 * is good for debugging. 2364 */ 2365 static int 2366 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof, 2367 void *data) 2368 { 2369 2370 adapter_t *adapter = (adapter_t *)data; 2371 volatile mbox_t *mbox = adapter->mbox; 2372 int len = 0; 2373 2374 len = sprintf(page, "Contents of Mail Box Structure\n"); 2375 len += sprintf(page+len, " Fw Command = 0x%02x\n", 2376 mbox->m_out.cmd); 2377 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n", 2378 mbox->m_out.cmdid); 2379 len += sprintf(page+len, " No of Sectors= %04d\n", 2380 mbox->m_out.numsectors); 2381 len += sprintf(page+len, " LBA = 0x%02x\n", 2382 mbox->m_out.lba); 2383 len += sprintf(page+len, " DTA = 0x%08x\n", 2384 mbox->m_out.xferaddr); 2385 len += sprintf(page+len, " Logical Drive= 0x%02x\n", 2386 mbox->m_out.logdrv); 2387 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n", 2388 mbox->m_out.numsgelements); 2389 len += sprintf(page+len, " Busy = %01x\n", 2390 mbox->m_in.busy); 2391 len += sprintf(page+len, " Status = 0x%02x\n", 2392 mbox->m_in.status); 2393 2394 *eof = 1; 2395 2396 return len; 2397 } 2398 2399 2400 /** 2401 * proc_rebuild_rate() 2402 * @page - buffer to write the data in 2403 * @start - where the actual data has been written in page 2404 * @offset - same meaning as the read system call 2405 * @count - same meaning as the read system call 2406 * @eof - set if no more data needs to be returned 2407 * @data - pointer to our soft state 2408 * 2409 * Display current rebuild rate 2410 */ 2411 static int 2412 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof, 2413 void *data) 2414 { 2415 adapter_t *adapter = (adapter_t *)data; 2416 dma_addr_t dma_handle; 2417 caddr_t inquiry; 2418 struct pci_dev *pdev; 2419 int len = 0; 2420 2421 if( make_local_pdev(adapter, &pdev) != 0 ) { 2422 *eof = 1; 2423 return len; 2424 } 2425 2426 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2427 free_local_pdev(pdev); 2428 *eof = 1; 2429 return len; 2430 } 2431 2432 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2433 2434 len = sprintf(page, "Adapter inquiry failed.\n"); 2435 2436 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2437 2438 mega_free_inquiry(inquiry, dma_handle, pdev); 2439 2440 free_local_pdev(pdev); 2441 2442 *eof = 1; 2443 2444 return len; 2445 } 2446 2447 if( adapter->flag & BOARD_40LD ) { 2448 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2449 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2450 } 2451 else { 2452 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2453 ((mraid_ext_inquiry *) 2454 inquiry)->raid_inq.adapter_info.rebuild_rate); 2455 } 2456 2457 2458 mega_free_inquiry(inquiry, dma_handle, pdev); 2459 2460 free_local_pdev(pdev); 2461 2462 *eof = 1; 2463 2464 return len; 2465 } 2466 2467 2468 /** 2469 * proc_battery() 2470 * @page - buffer to write the data in 2471 * @start - where the actual data has been written in page 2472 * @offset - same meaning as the read system call 2473 * @count - same meaning as the read system call 2474 * @eof - set if no more data needs to be returned 2475 * @data - pointer to our soft state 2476 * 2477 * Display information about the battery module on the controller. 2478 */ 2479 static int 2480 proc_battery(char *page, char **start, off_t offset, int count, int *eof, 2481 void *data) 2482 { 2483 adapter_t *adapter = (adapter_t *)data; 2484 dma_addr_t dma_handle; 2485 caddr_t inquiry; 2486 struct pci_dev *pdev; 2487 u8 battery_status = 0; 2488 char str[256]; 2489 int len = 0; 2490 2491 if( make_local_pdev(adapter, &pdev) != 0 ) { 2492 *eof = 1; 2493 return len; 2494 } 2495 2496 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2497 free_local_pdev(pdev); 2498 *eof = 1; 2499 return len; 2500 } 2501 2502 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2503 2504 len = sprintf(page, "Adapter inquiry failed.\n"); 2505 2506 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2507 2508 mega_free_inquiry(inquiry, dma_handle, pdev); 2509 2510 free_local_pdev(pdev); 2511 2512 *eof = 1; 2513 2514 return len; 2515 } 2516 2517 if( adapter->flag & BOARD_40LD ) { 2518 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2519 } 2520 else { 2521 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2522 raid_inq.adapter_info.battery_status; 2523 } 2524 2525 /* 2526 * Decode the battery status 2527 */ 2528 sprintf(str, "Battery Status:[%d]", battery_status); 2529 2530 if(battery_status == MEGA_BATT_CHARGE_DONE) 2531 strcat(str, " Charge Done"); 2532 2533 if(battery_status & MEGA_BATT_MODULE_MISSING) 2534 strcat(str, " Module Missing"); 2535 2536 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2537 strcat(str, " Low Voltage"); 2538 2539 if(battery_status & MEGA_BATT_TEMP_HIGH) 2540 strcat(str, " Temperature High"); 2541 2542 if(battery_status & MEGA_BATT_PACK_MISSING) 2543 strcat(str, " Pack Missing"); 2544 2545 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2546 strcat(str, " Charge In-progress"); 2547 2548 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2549 strcat(str, " Charge Fail"); 2550 2551 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2552 strcat(str, " Cycles Exceeded"); 2553 2554 len = sprintf(page, "%s\n", str); 2555 2556 2557 mega_free_inquiry(inquiry, dma_handle, pdev); 2558 2559 free_local_pdev(pdev); 2560 2561 *eof = 1; 2562 2563 return len; 2564 } 2565 2566 2567 /** 2568 * proc_pdrv_ch0() 2569 * @page - buffer to write the data in 2570 * @start - where the actual data has been written in page 2571 * @offset - same meaning as the read system call 2572 * @count - same meaning as the read system call 2573 * @eof - set if no more data needs to be returned 2574 * @data - pointer to our soft state 2575 * 2576 * Display information about the physical drives on physical channel 0. 2577 */ 2578 static int 2579 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof, 2580 void *data) 2581 { 2582 adapter_t *adapter = (adapter_t *)data; 2583 2584 *eof = 1; 2585 2586 return (proc_pdrv(adapter, page, 0)); 2587 } 2588 2589 2590 /** 2591 * proc_pdrv_ch1() 2592 * @page - buffer to write the data in 2593 * @start - where the actual data has been written in page 2594 * @offset - same meaning as the read system call 2595 * @count - same meaning as the read system call 2596 * @eof - set if no more data needs to be returned 2597 * @data - pointer to our soft state 2598 * 2599 * Display information about the physical drives on physical channel 1. 2600 */ 2601 static int 2602 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof, 2603 void *data) 2604 { 2605 adapter_t *adapter = (adapter_t *)data; 2606 2607 *eof = 1; 2608 2609 return (proc_pdrv(adapter, page, 1)); 2610 } 2611 2612 2613 /** 2614 * proc_pdrv_ch2() 2615 * @page - buffer to write the data in 2616 * @start - where the actual data has been written in page 2617 * @offset - same meaning as the read system call 2618 * @count - same meaning as the read system call 2619 * @eof - set if no more data needs to be returned 2620 * @data - pointer to our soft state 2621 * 2622 * Display information about the physical drives on physical channel 2. 2623 */ 2624 static int 2625 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof, 2626 void *data) 2627 { 2628 adapter_t *adapter = (adapter_t *)data; 2629 2630 *eof = 1; 2631 2632 return (proc_pdrv(adapter, page, 2)); 2633 } 2634 2635 2636 /** 2637 * proc_pdrv_ch3() 2638 * @page - buffer to write the data in 2639 * @start - where the actual data has been written in page 2640 * @offset - same meaning as the read system call 2641 * @count - same meaning as the read system call 2642 * @eof - set if no more data needs to be returned 2643 * @data - pointer to our soft state 2644 * 2645 * Display information about the physical drives on physical channel 3. 2646 */ 2647 static int 2648 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof, 2649 void *data) 2650 { 2651 adapter_t *adapter = (adapter_t *)data; 2652 2653 *eof = 1; 2654 2655 return (proc_pdrv(adapter, page, 3)); 2656 } 2657 2658 2659 /** 2660 * proc_pdrv() 2661 * @page - buffer to write the data in 2662 * @adapter - pointer to our soft state 2663 * 2664 * Display information about the physical drives. 2665 */ 2666 static int 2667 proc_pdrv(adapter_t *adapter, char *page, int channel) 2668 { 2669 dma_addr_t dma_handle; 2670 char *scsi_inq; 2671 dma_addr_t scsi_inq_dma_handle; 2672 caddr_t inquiry; 2673 struct pci_dev *pdev; 2674 u8 *pdrv_state; 2675 u8 state; 2676 int tgt; 2677 int max_channels; 2678 int len = 0; 2679 char str[80]; 2680 int i; 2681 2682 if( make_local_pdev(adapter, &pdev) != 0 ) { 2683 return len; 2684 } 2685 2686 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2687 goto free_pdev; 2688 } 2689 2690 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2691 len = sprintf(page, "Adapter inquiry failed.\n"); 2692 2693 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2694 2695 goto free_inquiry; 2696 } 2697 2698 2699 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2700 2701 if( scsi_inq == NULL ) { 2702 len = sprintf(page, "memory not available for scsi inq.\n"); 2703 2704 goto free_inquiry; 2705 } 2706 2707 if( adapter->flag & BOARD_40LD ) { 2708 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2709 } 2710 else { 2711 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2712 raid_inq.pdrv_info.pdrv_state; 2713 } 2714 2715 max_channels = adapter->product_info.nchannels; 2716 2717 if( channel >= max_channels ) { 2718 goto free_pci; 2719 } 2720 2721 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2722 2723 i = channel*16 + tgt; 2724 2725 state = *(pdrv_state + i); 2726 2727 switch( state & 0x0F ) { 2728 2729 case PDRV_ONLINE: 2730 sprintf(str, 2731 "Channel:%2d Id:%2d State: Online", 2732 channel, tgt); 2733 break; 2734 2735 case PDRV_FAILED: 2736 sprintf(str, 2737 "Channel:%2d Id:%2d State: Failed", 2738 channel, tgt); 2739 break; 2740 2741 case PDRV_RBLD: 2742 sprintf(str, 2743 "Channel:%2d Id:%2d State: Rebuild", 2744 channel, tgt); 2745 break; 2746 2747 case PDRV_HOTSPARE: 2748 sprintf(str, 2749 "Channel:%2d Id:%2d State: Hot spare", 2750 channel, tgt); 2751 break; 2752 2753 default: 2754 sprintf(str, 2755 "Channel:%2d Id:%2d State: Un-configured", 2756 channel, tgt); 2757 break; 2758 2759 } 2760 2761 /* 2762 * This interface displays inquiries for disk drives 2763 * only. Inquries for logical drives and non-disk 2764 * devices are available through /proc/scsi/scsi 2765 */ 2766 memset(scsi_inq, 0, 256); 2767 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2768 scsi_inq_dma_handle) || 2769 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2770 continue; 2771 } 2772 2773 /* 2774 * Check for overflow. We print less than 240 2775 * characters for inquiry 2776 */ 2777 if( (len + 240) >= PAGE_SIZE ) break; 2778 2779 len += sprintf(page+len, "%s.\n", str); 2780 2781 len += mega_print_inquiry(page+len, scsi_inq); 2782 } 2783 2784 free_pci: 2785 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2786 free_inquiry: 2787 mega_free_inquiry(inquiry, dma_handle, pdev); 2788 free_pdev: 2789 free_local_pdev(pdev); 2790 2791 return len; 2792 } 2793 2794 2795 /* 2796 * Display scsi inquiry 2797 */ 2798 static int 2799 mega_print_inquiry(char *page, char *scsi_inq) 2800 { 2801 int len = 0; 2802 int i; 2803 2804 len = sprintf(page, " Vendor: "); 2805 for( i = 8; i < 16; i++ ) { 2806 len += sprintf(page+len, "%c", scsi_inq[i]); 2807 } 2808 2809 len += sprintf(page+len, " Model: "); 2810 2811 for( i = 16; i < 32; i++ ) { 2812 len += sprintf(page+len, "%c", scsi_inq[i]); 2813 } 2814 2815 len += sprintf(page+len, " Rev: "); 2816 2817 for( i = 32; i < 36; i++ ) { 2818 len += sprintf(page+len, "%c", scsi_inq[i]); 2819 } 2820 2821 len += sprintf(page+len, "\n"); 2822 2823 i = scsi_inq[0] & 0x1f; 2824 2825 len += sprintf(page+len, " Type: %s ", 2826 i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] : 2827 "Unknown "); 2828 2829 len += sprintf(page+len, 2830 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07); 2831 2832 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2833 len += sprintf(page+len, " CCS\n"); 2834 else 2835 len += sprintf(page+len, "\n"); 2836 2837 return len; 2838 } 2839 2840 2841 /** 2842 * proc_rdrv_10() 2843 * @page - buffer to write the data in 2844 * @start - where the actual data has been written in page 2845 * @offset - same meaning as the read system call 2846 * @count - same meaning as the read system call 2847 * @eof - set if no more data needs to be returned 2848 * @data - pointer to our soft state 2849 * 2850 * Display real time information about the logical drives 0 through 9. 2851 */ 2852 static int 2853 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof, 2854 void *data) 2855 { 2856 adapter_t *adapter = (adapter_t *)data; 2857 2858 *eof = 1; 2859 2860 return (proc_rdrv(adapter, page, 0, 9)); 2861 } 2862 2863 2864 /** 2865 * proc_rdrv_20() 2866 * @page - buffer to write the data in 2867 * @start - where the actual data has been written in page 2868 * @offset - same meaning as the read system call 2869 * @count - same meaning as the read system call 2870 * @eof - set if no more data needs to be returned 2871 * @data - pointer to our soft state 2872 * 2873 * Display real time information about the logical drives 0 through 9. 2874 */ 2875 static int 2876 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof, 2877 void *data) 2878 { 2879 adapter_t *adapter = (adapter_t *)data; 2880 2881 *eof = 1; 2882 2883 return (proc_rdrv(adapter, page, 10, 19)); 2884 } 2885 2886 2887 /** 2888 * proc_rdrv_30() 2889 * @page - buffer to write the data in 2890 * @start - where the actual data has been written in page 2891 * @offset - same meaning as the read system call 2892 * @count - same meaning as the read system call 2893 * @eof - set if no more data needs to be returned 2894 * @data - pointer to our soft state 2895 * 2896 * Display real time information about the logical drives 0 through 9. 2897 */ 2898 static int 2899 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof, 2900 void *data) 2901 { 2902 adapter_t *adapter = (adapter_t *)data; 2903 2904 *eof = 1; 2905 2906 return (proc_rdrv(adapter, page, 20, 29)); 2907 } 2908 2909 2910 /** 2911 * proc_rdrv_40() 2912 * @page - buffer to write the data in 2913 * @start - where the actual data has been written in page 2914 * @offset - same meaning as the read system call 2915 * @count - same meaning as the read system call 2916 * @eof - set if no more data needs to be returned 2917 * @data - pointer to our soft state 2918 * 2919 * Display real time information about the logical drives 0 through 9. 2920 */ 2921 static int 2922 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof, 2923 void *data) 2924 { 2925 adapter_t *adapter = (adapter_t *)data; 2926 2927 *eof = 1; 2928 2929 return (proc_rdrv(adapter, page, 30, 39)); 2930 } 2931 2932 2933 /** 2934 * proc_rdrv() 2935 * @page - buffer to write the data in 2936 * @adapter - pointer to our soft state 2937 * @start - starting logical drive to display 2938 * @end - ending logical drive to display 2939 * 2940 * We do not print the inquiry information since its already available through 2941 * /proc/scsi/scsi interface 2942 */ 2943 static int 2944 proc_rdrv(adapter_t *adapter, char *page, int start, int end ) 2945 { 2946 dma_addr_t dma_handle; 2947 logdrv_param *lparam; 2948 megacmd_t mc; 2949 char *disk_array; 2950 dma_addr_t disk_array_dma_handle; 2951 caddr_t inquiry; 2952 struct pci_dev *pdev; 2953 u8 *rdrv_state; 2954 int num_ldrv; 2955 u32 array_sz; 2956 int len = 0; 2957 int i; 2958 2959 if( make_local_pdev(adapter, &pdev) != 0 ) { 2960 return len; 2961 } 2962 2963 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2964 free_local_pdev(pdev); 2965 return len; 2966 } 2967 2968 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2969 2970 len = sprintf(page, "Adapter inquiry failed.\n"); 2971 2972 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2973 2974 mega_free_inquiry(inquiry, dma_handle, pdev); 2975 2976 free_local_pdev(pdev); 2977 2978 return len; 2979 } 2980 2981 memset(&mc, 0, sizeof(megacmd_t)); 2982 2983 if( adapter->flag & BOARD_40LD ) { 2984 array_sz = sizeof(disk_array_40ld); 2985 2986 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2987 2988 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2989 } 2990 else { 2991 array_sz = sizeof(disk_array_8ld); 2992 2993 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2994 raid_inq.logdrv_info.ldrv_state; 2995 2996 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2997 raid_inq.logdrv_info.num_ldrv; 2998 } 2999 3000 disk_array = pci_alloc_consistent(pdev, array_sz, 3001 &disk_array_dma_handle); 3002 3003 if( disk_array == NULL ) { 3004 len = sprintf(page, "memory not available.\n"); 3005 3006 mega_free_inquiry(inquiry, dma_handle, pdev); 3007 3008 free_local_pdev(pdev); 3009 3010 return len; 3011 } 3012 3013 mc.xferaddr = (u32)disk_array_dma_handle; 3014 3015 if( adapter->flag & BOARD_40LD ) { 3016 mc.cmd = FC_NEW_CONFIG; 3017 mc.opcode = OP_DCMD_READ_CONFIG; 3018 3019 if( mega_internal_command(adapter, &mc, NULL) ) { 3020 3021 len = sprintf(page, "40LD read config failed.\n"); 3022 3023 mega_free_inquiry(inquiry, dma_handle, pdev); 3024 3025 pci_free_consistent(pdev, array_sz, disk_array, 3026 disk_array_dma_handle); 3027 3028 free_local_pdev(pdev); 3029 3030 return len; 3031 } 3032 3033 } 3034 else { 3035 mc.cmd = NEW_READ_CONFIG_8LD; 3036 3037 if( mega_internal_command(adapter, &mc, NULL) ) { 3038 3039 mc.cmd = READ_CONFIG_8LD; 3040 3041 if( mega_internal_command(adapter, &mc, 3042 NULL) ){ 3043 3044 len = sprintf(page, 3045 "8LD read config failed.\n"); 3046 3047 mega_free_inquiry(inquiry, dma_handle, pdev); 3048 3049 pci_free_consistent(pdev, array_sz, 3050 disk_array, 3051 disk_array_dma_handle); 3052 3053 free_local_pdev(pdev); 3054 3055 return len; 3056 } 3057 } 3058 } 3059 3060 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 3061 3062 if( adapter->flag & BOARD_40LD ) { 3063 lparam = 3064 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 3065 } 3066 else { 3067 lparam = 3068 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 3069 } 3070 3071 /* 3072 * Check for overflow. We print less than 240 characters for 3073 * information about each logical drive. 3074 */ 3075 if( (len + 240) >= PAGE_SIZE ) break; 3076 3077 len += sprintf(page+len, "Logical drive:%2d:, ", i); 3078 3079 switch( rdrv_state[i] & 0x0F ) { 3080 case RDRV_OFFLINE: 3081 len += sprintf(page+len, "state: offline"); 3082 break; 3083 3084 case RDRV_DEGRADED: 3085 len += sprintf(page+len, "state: degraded"); 3086 break; 3087 3088 case RDRV_OPTIMAL: 3089 len += sprintf(page+len, "state: optimal"); 3090 break; 3091 3092 case RDRV_DELETED: 3093 len += sprintf(page+len, "state: deleted"); 3094 break; 3095 3096 default: 3097 len += sprintf(page+len, "state: unknown"); 3098 break; 3099 } 3100 3101 /* 3102 * Check if check consistency or initialization is going on 3103 * for this logical drive. 3104 */ 3105 if( (rdrv_state[i] & 0xF0) == 0x20 ) { 3106 len += sprintf(page+len, 3107 ", check-consistency in progress"); 3108 } 3109 else if( (rdrv_state[i] & 0xF0) == 0x10 ) { 3110 len += sprintf(page+len, 3111 ", initialization in progress"); 3112 } 3113 3114 len += sprintf(page+len, "\n"); 3115 3116 len += sprintf(page+len, "Span depth:%3d, ", 3117 lparam->span_depth); 3118 3119 len += sprintf(page+len, "RAID level:%3d, ", 3120 lparam->level); 3121 3122 len += sprintf(page+len, "Stripe size:%3d, ", 3123 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 3124 3125 len += sprintf(page+len, "Row size:%3d\n", 3126 lparam->row_size); 3127 3128 3129 len += sprintf(page+len, "Read Policy: "); 3130 3131 switch(lparam->read_ahead) { 3132 3133 case NO_READ_AHEAD: 3134 len += sprintf(page+len, "No read ahead, "); 3135 break; 3136 3137 case READ_AHEAD: 3138 len += sprintf(page+len, "Read ahead, "); 3139 break; 3140 3141 case ADAP_READ_AHEAD: 3142 len += sprintf(page+len, "Adaptive, "); 3143 break; 3144 3145 } 3146 3147 len += sprintf(page+len, "Write Policy: "); 3148 3149 switch(lparam->write_mode) { 3150 3151 case WRMODE_WRITE_THRU: 3152 len += sprintf(page+len, "Write thru, "); 3153 break; 3154 3155 case WRMODE_WRITE_BACK: 3156 len += sprintf(page+len, "Write back, "); 3157 break; 3158 } 3159 3160 len += sprintf(page+len, "Cache Policy: "); 3161 3162 switch(lparam->direct_io) { 3163 3164 case CACHED_IO: 3165 len += sprintf(page+len, "Cached IO\n\n"); 3166 break; 3167 3168 case DIRECT_IO: 3169 len += sprintf(page+len, "Direct IO\n\n"); 3170 break; 3171 } 3172 } 3173 3174 mega_free_inquiry(inquiry, dma_handle, pdev); 3175 3176 pci_free_consistent(pdev, array_sz, disk_array, 3177 disk_array_dma_handle); 3178 3179 free_local_pdev(pdev); 3180 3181 return len; 3182 } 3183 3184 #endif 3185 3186 3187 /** 3188 * megaraid_biosparam() 3189 * 3190 * Return the disk geometry for a particular disk 3191 */ 3192 static int 3193 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 3194 sector_t capacity, int geom[]) 3195 { 3196 adapter_t *adapter; 3197 unsigned char *bh; 3198 int heads; 3199 int sectors; 3200 int cylinders; 3201 int rval; 3202 3203 /* Get pointer to host config structure */ 3204 adapter = (adapter_t *)sdev->host->hostdata; 3205 3206 if (IS_RAID_CH(adapter, sdev->channel)) { 3207 /* Default heads (64) & sectors (32) */ 3208 heads = 64; 3209 sectors = 32; 3210 cylinders = (ulong)capacity / (heads * sectors); 3211 3212 /* 3213 * Handle extended translation size for logical drives 3214 * > 1Gb 3215 */ 3216 if ((ulong)capacity >= 0x200000) { 3217 heads = 255; 3218 sectors = 63; 3219 cylinders = (ulong)capacity / (heads * sectors); 3220 } 3221 3222 /* return result */ 3223 geom[0] = heads; 3224 geom[1] = sectors; 3225 geom[2] = cylinders; 3226 } 3227 else { 3228 bh = scsi_bios_ptable(bdev); 3229 3230 if( bh ) { 3231 rval = scsi_partsize(bh, capacity, 3232 &geom[2], &geom[0], &geom[1]); 3233 kfree(bh); 3234 if( rval != -1 ) 3235 return rval; 3236 } 3237 3238 printk(KERN_INFO 3239 "megaraid: invalid partition on this disk on channel %d\n", 3240 sdev->channel); 3241 3242 /* Default heads (64) & sectors (32) */ 3243 heads = 64; 3244 sectors = 32; 3245 cylinders = (ulong)capacity / (heads * sectors); 3246 3247 /* Handle extended translation size for logical drives > 1Gb */ 3248 if ((ulong)capacity >= 0x200000) { 3249 heads = 255; 3250 sectors = 63; 3251 cylinders = (ulong)capacity / (heads * sectors); 3252 } 3253 3254 /* return result */ 3255 geom[0] = heads; 3256 geom[1] = sectors; 3257 geom[2] = cylinders; 3258 } 3259 3260 return 0; 3261 } 3262 3263 /** 3264 * mega_init_scb() 3265 * @adapter - pointer to our soft state 3266 * 3267 * Allocate memory for the various pointers in the scb structures: 3268 * scatter-gather list pointer, passthru and extended passthru structure 3269 * pointers. 3270 */ 3271 static int 3272 mega_init_scb(adapter_t *adapter) 3273 { 3274 scb_t *scb; 3275 int i; 3276 3277 for( i = 0; i < adapter->max_cmds; i++ ) { 3278 3279 scb = &adapter->scb_list[i]; 3280 3281 scb->sgl64 = NULL; 3282 scb->sgl = NULL; 3283 scb->pthru = NULL; 3284 scb->epthru = NULL; 3285 } 3286 3287 for( i = 0; i < adapter->max_cmds; i++ ) { 3288 3289 scb = &adapter->scb_list[i]; 3290 3291 scb->idx = i; 3292 3293 scb->sgl64 = pci_alloc_consistent(adapter->dev, 3294 sizeof(mega_sgl64) * adapter->sglen, 3295 &scb->sgl_dma_addr); 3296 3297 scb->sgl = (mega_sglist *)scb->sgl64; 3298 3299 if( !scb->sgl ) { 3300 printk(KERN_WARNING "RAID: Can't allocate sglist.\n"); 3301 mega_free_sgl(adapter); 3302 return -1; 3303 } 3304 3305 scb->pthru = pci_alloc_consistent(adapter->dev, 3306 sizeof(mega_passthru), 3307 &scb->pthru_dma_addr); 3308 3309 if( !scb->pthru ) { 3310 printk(KERN_WARNING "RAID: Can't allocate passthru.\n"); 3311 mega_free_sgl(adapter); 3312 return -1; 3313 } 3314 3315 scb->epthru = pci_alloc_consistent(adapter->dev, 3316 sizeof(mega_ext_passthru), 3317 &scb->epthru_dma_addr); 3318 3319 if( !scb->epthru ) { 3320 printk(KERN_WARNING 3321 "Can't allocate extended passthru.\n"); 3322 mega_free_sgl(adapter); 3323 return -1; 3324 } 3325 3326 3327 scb->dma_type = MEGA_DMA_TYPE_NONE; 3328 3329 /* 3330 * Link to free list 3331 * lock not required since we are loading the driver, so no 3332 * commands possible right now. 3333 */ 3334 scb->state = SCB_FREE; 3335 scb->cmd = NULL; 3336 list_add(&scb->list, &adapter->free_list); 3337 } 3338 3339 return 0; 3340 } 3341 3342 3343 /** 3344 * megadev_open() 3345 * @inode - unused 3346 * @filep - unused 3347 * 3348 * Routines for the character/ioctl interface to the driver. Find out if this 3349 * is a valid open. If yes, increment the module use count so that it cannot 3350 * be unloaded. 3351 */ 3352 static int 3353 megadev_open (struct inode *inode, struct file *filep) 3354 { 3355 /* 3356 * Only allow superuser to access private ioctl interface 3357 */ 3358 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 3359 3360 return 0; 3361 } 3362 3363 3364 /** 3365 * megadev_ioctl() 3366 * @inode - Our device inode 3367 * @filep - unused 3368 * @cmd - ioctl command 3369 * @arg - user buffer 3370 * 3371 * ioctl entry point for our private ioctl interface. We move the data in from 3372 * the user space, prepare the command (if necessary, convert the old MIMD 3373 * ioctl to new ioctl command), and issue a synchronous command to the 3374 * controller. 3375 */ 3376 static int 3377 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, 3378 unsigned long arg) 3379 { 3380 adapter_t *adapter; 3381 nitioctl_t uioc; 3382 int adapno; 3383 int rval; 3384 mega_passthru __user *upthru; /* user address for passthru */ 3385 mega_passthru *pthru; /* copy user passthru here */ 3386 dma_addr_t pthru_dma_hndl; 3387 void *data = NULL; /* data to be transferred */ 3388 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 3389 megacmd_t mc; 3390 megastat_t __user *ustats; 3391 int num_ldrv; 3392 u32 uxferaddr = 0; 3393 struct pci_dev *pdev; 3394 3395 ustats = NULL; /* avoid compilation warnings */ 3396 num_ldrv = 0; 3397 3398 /* 3399 * Make sure only USCSICMD are issued through this interface. 3400 * MIMD application would still fire different command. 3401 */ 3402 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 3403 return -EINVAL; 3404 } 3405 3406 /* 3407 * Check and convert a possible MIMD command to NIT command. 3408 * mega_m_to_n() copies the data from the user space, so we do not 3409 * have to do it here. 3410 * NOTE: We will need some user address to copyout the data, therefore 3411 * the inteface layer will also provide us with the required user 3412 * addresses. 3413 */ 3414 memset(&uioc, 0, sizeof(nitioctl_t)); 3415 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3416 return rval; 3417 3418 3419 switch( uioc.opcode ) { 3420 3421 case GET_DRIVER_VER: 3422 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3423 return (-EFAULT); 3424 3425 break; 3426 3427 case GET_N_ADAP: 3428 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3429 return (-EFAULT); 3430 3431 /* 3432 * Shucks. MIMD interface returns a positive value for number 3433 * of adapters. TODO: Change it to return 0 when there is no 3434 * applicatio using mimd interface. 3435 */ 3436 return hba_count; 3437 3438 case GET_ADAP_INFO: 3439 3440 /* 3441 * Which adapter 3442 */ 3443 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3444 return (-ENODEV); 3445 3446 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3447 sizeof(struct mcontroller)) ) 3448 return (-EFAULT); 3449 break; 3450 3451 #if MEGA_HAVE_STATS 3452 3453 case GET_STATS: 3454 /* 3455 * Which adapter 3456 */ 3457 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3458 return (-ENODEV); 3459 3460 adapter = hba_soft_state[adapno]; 3461 3462 ustats = uioc.uioc_uaddr; 3463 3464 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3465 return (-EFAULT); 3466 3467 /* 3468 * Check for the validity of the logical drive number 3469 */ 3470 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3471 3472 if( copy_to_user(ustats->nreads, adapter->nreads, 3473 num_ldrv*sizeof(u32)) ) 3474 return -EFAULT; 3475 3476 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3477 num_ldrv*sizeof(u32)) ) 3478 return -EFAULT; 3479 3480 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3481 num_ldrv*sizeof(u32)) ) 3482 return -EFAULT; 3483 3484 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3485 num_ldrv*sizeof(u32)) ) 3486 return -EFAULT; 3487 3488 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3489 num_ldrv*sizeof(u32)) ) 3490 return -EFAULT; 3491 3492 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3493 num_ldrv*sizeof(u32)) ) 3494 return -EFAULT; 3495 3496 return 0; 3497 3498 #endif 3499 case MBOX_CMD: 3500 3501 /* 3502 * Which adapter 3503 */ 3504 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3505 return (-ENODEV); 3506 3507 adapter = hba_soft_state[adapno]; 3508 3509 /* 3510 * Deletion of logical drive is a special case. The adapter 3511 * should be quiescent before this command is issued. 3512 */ 3513 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3514 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3515 3516 /* 3517 * Do we support this feature 3518 */ 3519 if( !adapter->support_random_del ) { 3520 printk(KERN_WARNING "megaraid: logdrv "); 3521 printk("delete on non-supporting F/W.\n"); 3522 3523 return (-EINVAL); 3524 } 3525 3526 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3527 3528 if( rval == 0 ) { 3529 memset(&mc, 0, sizeof(megacmd_t)); 3530 3531 mc.status = rval; 3532 3533 rval = mega_n_to_m((void __user *)arg, &mc); 3534 } 3535 3536 return rval; 3537 } 3538 /* 3539 * This interface only support the regular passthru commands. 3540 * Reject extended passthru and 64-bit passthru 3541 */ 3542 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3543 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3544 3545 printk(KERN_WARNING "megaraid: rejected passthru.\n"); 3546 3547 return (-EINVAL); 3548 } 3549 3550 /* 3551 * For all internal commands, the buffer must be allocated in 3552 * <4GB address range 3553 */ 3554 if( make_local_pdev(adapter, &pdev) != 0 ) 3555 return -EIO; 3556 3557 /* Is it a passthru command or a DCMD */ 3558 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3559 /* Passthru commands */ 3560 3561 pthru = pci_alloc_consistent(pdev, 3562 sizeof(mega_passthru), 3563 &pthru_dma_hndl); 3564 3565 if( pthru == NULL ) { 3566 free_local_pdev(pdev); 3567 return (-ENOMEM); 3568 } 3569 3570 /* 3571 * The user passthru structure 3572 */ 3573 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr; 3574 3575 /* 3576 * Copy in the user passthru here. 3577 */ 3578 if( copy_from_user(pthru, upthru, 3579 sizeof(mega_passthru)) ) { 3580 3581 pci_free_consistent(pdev, 3582 sizeof(mega_passthru), pthru, 3583 pthru_dma_hndl); 3584 3585 free_local_pdev(pdev); 3586 3587 return (-EFAULT); 3588 } 3589 3590 /* 3591 * Is there a data transfer 3592 */ 3593 if( pthru->dataxferlen ) { 3594 data = pci_alloc_consistent(pdev, 3595 pthru->dataxferlen, 3596 &data_dma_hndl); 3597 3598 if( data == NULL ) { 3599 pci_free_consistent(pdev, 3600 sizeof(mega_passthru), 3601 pthru, 3602 pthru_dma_hndl); 3603 3604 free_local_pdev(pdev); 3605 3606 return (-ENOMEM); 3607 } 3608 3609 /* 3610 * Save the user address and point the kernel 3611 * address at just allocated memory 3612 */ 3613 uxferaddr = pthru->dataxferaddr; 3614 pthru->dataxferaddr = data_dma_hndl; 3615 } 3616 3617 3618 /* 3619 * Is data coming down-stream 3620 */ 3621 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3622 /* 3623 * Get the user data 3624 */ 3625 if( copy_from_user(data, (char __user *)uxferaddr, 3626 pthru->dataxferlen) ) { 3627 rval = (-EFAULT); 3628 goto freemem_and_return; 3629 } 3630 } 3631 3632 memset(&mc, 0, sizeof(megacmd_t)); 3633 3634 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3635 mc.xferaddr = (u32)pthru_dma_hndl; 3636 3637 /* 3638 * Issue the command 3639 */ 3640 mega_internal_command(adapter, &mc, pthru); 3641 3642 rval = mega_n_to_m((void __user *)arg, &mc); 3643 3644 if( rval ) goto freemem_and_return; 3645 3646 3647 /* 3648 * Is data going up-stream 3649 */ 3650 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3651 if( copy_to_user((char __user *)uxferaddr, data, 3652 pthru->dataxferlen) ) { 3653 rval = (-EFAULT); 3654 } 3655 } 3656 3657 /* 3658 * Send the request sense data also, irrespective of 3659 * whether the user has asked for it or not. 3660 */ 3661 copy_to_user(upthru->reqsensearea, 3662 pthru->reqsensearea, 14); 3663 3664 freemem_and_return: 3665 if( pthru->dataxferlen ) { 3666 pci_free_consistent(pdev, 3667 pthru->dataxferlen, data, 3668 data_dma_hndl); 3669 } 3670 3671 pci_free_consistent(pdev, sizeof(mega_passthru), 3672 pthru, pthru_dma_hndl); 3673 3674 free_local_pdev(pdev); 3675 3676 return rval; 3677 } 3678 else { 3679 /* DCMD commands */ 3680 3681 /* 3682 * Is there a data transfer 3683 */ 3684 if( uioc.xferlen ) { 3685 data = pci_alloc_consistent(pdev, 3686 uioc.xferlen, &data_dma_hndl); 3687 3688 if( data == NULL ) { 3689 free_local_pdev(pdev); 3690 return (-ENOMEM); 3691 } 3692 3693 uxferaddr = MBOX(uioc)->xferaddr; 3694 } 3695 3696 /* 3697 * Is data coming down-stream 3698 */ 3699 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3700 /* 3701 * Get the user data 3702 */ 3703 if( copy_from_user(data, (char __user *)uxferaddr, 3704 uioc.xferlen) ) { 3705 3706 pci_free_consistent(pdev, 3707 uioc.xferlen, 3708 data, data_dma_hndl); 3709 3710 free_local_pdev(pdev); 3711 3712 return (-EFAULT); 3713 } 3714 } 3715 3716 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3717 3718 mc.xferaddr = (u32)data_dma_hndl; 3719 3720 /* 3721 * Issue the command 3722 */ 3723 mega_internal_command(adapter, &mc, NULL); 3724 3725 rval = mega_n_to_m((void __user *)arg, &mc); 3726 3727 if( rval ) { 3728 if( uioc.xferlen ) { 3729 pci_free_consistent(pdev, 3730 uioc.xferlen, data, 3731 data_dma_hndl); 3732 } 3733 3734 free_local_pdev(pdev); 3735 3736 return rval; 3737 } 3738 3739 /* 3740 * Is data going up-stream 3741 */ 3742 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3743 if( copy_to_user((char __user *)uxferaddr, data, 3744 uioc.xferlen) ) { 3745 3746 rval = (-EFAULT); 3747 } 3748 } 3749 3750 if( uioc.xferlen ) { 3751 pci_free_consistent(pdev, 3752 uioc.xferlen, data, 3753 data_dma_hndl); 3754 } 3755 3756 free_local_pdev(pdev); 3757 3758 return rval; 3759 } 3760 3761 default: 3762 return (-EINVAL); 3763 } 3764 3765 return 0; 3766 } 3767 3768 /** 3769 * mega_m_to_n() 3770 * @arg - user address 3771 * @uioc - new ioctl structure 3772 * 3773 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3774 * structure 3775 * 3776 * Converts the older mimd ioctl structure to newer NIT structure 3777 */ 3778 static int 3779 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3780 { 3781 struct uioctl_t uioc_mimd; 3782 char signature[8] = {0}; 3783 u8 opcode; 3784 u8 subopcode; 3785 3786 3787 /* 3788 * check is the application conforms to NIT. We do not have to do much 3789 * in that case. 3790 * We exploit the fact that the signature is stored in the very 3791 * begining of the structure. 3792 */ 3793 3794 if( copy_from_user(signature, arg, 7) ) 3795 return (-EFAULT); 3796 3797 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3798 3799 /* 3800 * NOTE NOTE: The nit ioctl is still under flux because of 3801 * change of mailbox definition, in HPE. No applications yet 3802 * use this interface and let's not have applications use this 3803 * interface till the new specifitions are in place. 3804 */ 3805 return -EINVAL; 3806 #if 0 3807 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3808 return (-EFAULT); 3809 return 0; 3810 #endif 3811 } 3812 3813 /* 3814 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3815 * 3816 * Get the user ioctl structure 3817 */ 3818 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3819 return (-EFAULT); 3820 3821 3822 /* 3823 * Get the opcode and subopcode for the commands 3824 */ 3825 opcode = uioc_mimd.ui.fcs.opcode; 3826 subopcode = uioc_mimd.ui.fcs.subopcode; 3827 3828 switch (opcode) { 3829 case 0x82: 3830 3831 switch (subopcode) { 3832 3833 case MEGAIOC_QDRVRVER: /* Query driver version */ 3834 uioc->opcode = GET_DRIVER_VER; 3835 uioc->uioc_uaddr = uioc_mimd.data; 3836 break; 3837 3838 case MEGAIOC_QNADAP: /* Get # of adapters */ 3839 uioc->opcode = GET_N_ADAP; 3840 uioc->uioc_uaddr = uioc_mimd.data; 3841 break; 3842 3843 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3844 uioc->opcode = GET_ADAP_INFO; 3845 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3846 uioc->uioc_uaddr = uioc_mimd.data; 3847 break; 3848 3849 default: 3850 return(-EINVAL); 3851 } 3852 3853 break; 3854 3855 3856 case 0x81: 3857 3858 uioc->opcode = MBOX_CMD; 3859 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3860 3861 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3862 3863 uioc->xferlen = uioc_mimd.ui.fcs.length; 3864 3865 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3866 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3867 3868 break; 3869 3870 case 0x80: 3871 3872 uioc->opcode = MBOX_CMD; 3873 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3874 3875 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3876 3877 /* 3878 * Choose the xferlen bigger of input and output data 3879 */ 3880 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3881 uioc_mimd.outlen : uioc_mimd.inlen; 3882 3883 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3884 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3885 3886 break; 3887 3888 default: 3889 return (-EINVAL); 3890 3891 } 3892 3893 return 0; 3894 } 3895 3896 /* 3897 * mega_n_to_m() 3898 * @arg - user address 3899 * @mc - mailbox command 3900 * 3901 * Updates the status information to the application, depending on application 3902 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3903 */ 3904 static int 3905 mega_n_to_m(void __user *arg, megacmd_t *mc) 3906 { 3907 nitioctl_t __user *uiocp; 3908 megacmd_t __user *umc; 3909 mega_passthru __user *upthru; 3910 struct uioctl_t __user *uioc_mimd; 3911 char signature[8] = {0}; 3912 3913 /* 3914 * check is the application conforms to NIT. 3915 */ 3916 if( copy_from_user(signature, arg, 7) ) 3917 return -EFAULT; 3918 3919 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3920 3921 uiocp = arg; 3922 3923 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3924 return (-EFAULT); 3925 3926 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3927 3928 umc = MBOX_P(uiocp); 3929 3930 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3931 return -EFAULT; 3932 3933 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3934 return (-EFAULT); 3935 } 3936 } 3937 else { 3938 uioc_mimd = arg; 3939 3940 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3941 return (-EFAULT); 3942 3943 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3944 3945 umc = (megacmd_t __user *)uioc_mimd->mbox; 3946 3947 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3948 return (-EFAULT); 3949 3950 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3951 return (-EFAULT); 3952 } 3953 } 3954 3955 return 0; 3956 } 3957 3958 3959 /* 3960 * MEGARAID 'FW' commands. 3961 */ 3962 3963 /** 3964 * mega_is_bios_enabled() 3965 * @adapter - pointer to our soft state 3966 * 3967 * issue command to find out if the BIOS is enabled for this controller 3968 */ 3969 static int 3970 mega_is_bios_enabled(adapter_t *adapter) 3971 { 3972 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3973 mbox_t *mbox; 3974 int ret; 3975 3976 mbox = (mbox_t *)raw_mbox; 3977 3978 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3979 3980 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3981 3982 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3983 3984 raw_mbox[0] = IS_BIOS_ENABLED; 3985 raw_mbox[2] = GET_BIOS; 3986 3987 3988 ret = issue_scb_block(adapter, raw_mbox); 3989 3990 return *(char *)adapter->mega_buffer; 3991 } 3992 3993 3994 /** 3995 * mega_enum_raid_scsi() 3996 * @adapter - pointer to our soft state 3997 * 3998 * Find out what channels are RAID/SCSI. This information is used to 3999 * differentiate the virtual channels and physical channels and to support 4000 * ROMB feature and non-disk devices. 4001 */ 4002 static void 4003 mega_enum_raid_scsi(adapter_t *adapter) 4004 { 4005 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4006 mbox_t *mbox; 4007 int i; 4008 4009 mbox = (mbox_t *)raw_mbox; 4010 4011 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4012 4013 /* 4014 * issue command to find out what channels are raid/scsi 4015 */ 4016 raw_mbox[0] = CHNL_CLASS; 4017 raw_mbox[2] = GET_CHNL_CLASS; 4018 4019 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4020 4021 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4022 4023 /* 4024 * Non-ROMB firmware fail this command, so all channels 4025 * must be shown RAID 4026 */ 4027 adapter->mega_ch_class = 0xFF; 4028 4029 if(!issue_scb_block(adapter, raw_mbox)) { 4030 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 4031 4032 } 4033 4034 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 4035 if( (adapter->mega_ch_class >> i) & 0x01 ) { 4036 printk(KERN_INFO "megaraid: channel[%d] is raid.\n", 4037 i); 4038 } 4039 else { 4040 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n", 4041 i); 4042 } 4043 } 4044 4045 return; 4046 } 4047 4048 4049 /** 4050 * mega_get_boot_drv() 4051 * @adapter - pointer to our soft state 4052 * 4053 * Find out which device is the boot device. Note, any logical drive or any 4054 * phyical device (e.g., a CDROM) can be designated as a boot device. 4055 */ 4056 static void 4057 mega_get_boot_drv(adapter_t *adapter) 4058 { 4059 struct private_bios_data *prv_bios_data; 4060 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4061 mbox_t *mbox; 4062 u16 cksum = 0; 4063 u8 *cksum_p; 4064 u8 boot_pdrv; 4065 int i; 4066 4067 mbox = (mbox_t *)raw_mbox; 4068 4069 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4070 4071 raw_mbox[0] = BIOS_PVT_DATA; 4072 raw_mbox[2] = GET_BIOS_PVT_DATA; 4073 4074 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4075 4076 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4077 4078 adapter->boot_ldrv_enabled = 0; 4079 adapter->boot_ldrv = 0; 4080 4081 adapter->boot_pdrv_enabled = 0; 4082 adapter->boot_pdrv_ch = 0; 4083 adapter->boot_pdrv_tgt = 0; 4084 4085 if(issue_scb_block(adapter, raw_mbox) == 0) { 4086 prv_bios_data = 4087 (struct private_bios_data *)adapter->mega_buffer; 4088 4089 cksum = 0; 4090 cksum_p = (char *)prv_bios_data; 4091 for (i = 0; i < 14; i++ ) { 4092 cksum += (u16)(*cksum_p++); 4093 } 4094 4095 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 4096 4097 /* 4098 * If MSB is set, a physical drive is set as boot 4099 * device 4100 */ 4101 if( prv_bios_data->boot_drv & 0x80 ) { 4102 adapter->boot_pdrv_enabled = 1; 4103 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 4104 adapter->boot_pdrv_ch = boot_pdrv / 16; 4105 adapter->boot_pdrv_tgt = boot_pdrv % 16; 4106 } 4107 else { 4108 adapter->boot_ldrv_enabled = 1; 4109 adapter->boot_ldrv = prv_bios_data->boot_drv; 4110 } 4111 } 4112 } 4113 4114 } 4115 4116 /** 4117 * mega_support_random_del() 4118 * @adapter - pointer to our soft state 4119 * 4120 * Find out if this controller supports random deletion and addition of 4121 * logical drives 4122 */ 4123 static int 4124 mega_support_random_del(adapter_t *adapter) 4125 { 4126 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4127 mbox_t *mbox; 4128 int rval; 4129 4130 mbox = (mbox_t *)raw_mbox; 4131 4132 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4133 4134 /* 4135 * issue command 4136 */ 4137 raw_mbox[0] = FC_DEL_LOGDRV; 4138 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 4139 4140 rval = issue_scb_block(adapter, raw_mbox); 4141 4142 return !rval; 4143 } 4144 4145 4146 /** 4147 * mega_support_ext_cdb() 4148 * @adapter - pointer to our soft state 4149 * 4150 * Find out if this firmware support cdblen > 10 4151 */ 4152 static int 4153 mega_support_ext_cdb(adapter_t *adapter) 4154 { 4155 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4156 mbox_t *mbox; 4157 int rval; 4158 4159 mbox = (mbox_t *)raw_mbox; 4160 4161 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4162 /* 4163 * issue command to find out if controller supports extended CDBs. 4164 */ 4165 raw_mbox[0] = 0xA4; 4166 raw_mbox[2] = 0x16; 4167 4168 rval = issue_scb_block(adapter, raw_mbox); 4169 4170 return !rval; 4171 } 4172 4173 4174 /** 4175 * mega_del_logdrv() 4176 * @adapter - pointer to our soft state 4177 * @logdrv - logical drive to be deleted 4178 * 4179 * Delete the specified logical drive. It is the responsibility of the user 4180 * app to let the OS know about this operation. 4181 */ 4182 static int 4183 mega_del_logdrv(adapter_t *adapter, int logdrv) 4184 { 4185 unsigned long flags; 4186 scb_t *scb; 4187 int rval; 4188 4189 /* 4190 * Stop sending commands to the controller, queue them internally. 4191 * When deletion is complete, ISR will flush the queue. 4192 */ 4193 atomic_set(&adapter->quiescent, 1); 4194 4195 /* 4196 * Wait till all the issued commands are complete and there are no 4197 * commands in the pending queue 4198 */ 4199 while (atomic_read(&adapter->pend_cmds) > 0 || 4200 !list_empty(&adapter->pending_list)) 4201 msleep(1000); /* sleep for 1s */ 4202 4203 rval = mega_do_del_logdrv(adapter, logdrv); 4204 4205 spin_lock_irqsave(&adapter->lock, flags); 4206 4207 /* 4208 * If delete operation was successful, add 0x80 to the logical drive 4209 * ids for commands in the pending queue. 4210 */ 4211 if (adapter->read_ldidmap) { 4212 struct list_head *pos; 4213 list_for_each(pos, &adapter->pending_list) { 4214 scb = list_entry(pos, scb_t, list); 4215 if (scb->pthru->logdrv < 0x80 ) 4216 scb->pthru->logdrv += 0x80; 4217 } 4218 } 4219 4220 atomic_set(&adapter->quiescent, 0); 4221 4222 mega_runpendq(adapter); 4223 4224 spin_unlock_irqrestore(&adapter->lock, flags); 4225 4226 return rval; 4227 } 4228 4229 4230 static int 4231 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 4232 { 4233 megacmd_t mc; 4234 int rval; 4235 4236 memset( &mc, 0, sizeof(megacmd_t)); 4237 4238 mc.cmd = FC_DEL_LOGDRV; 4239 mc.opcode = OP_DEL_LOGDRV; 4240 mc.subopcode = logdrv; 4241 4242 rval = mega_internal_command(adapter, &mc, NULL); 4243 4244 /* log this event */ 4245 if(rval) { 4246 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv); 4247 return rval; 4248 } 4249 4250 /* 4251 * After deleting first logical drive, the logical drives must be 4252 * addressed by adding 0x80 to the logical drive id. 4253 */ 4254 adapter->read_ldidmap = 1; 4255 4256 return rval; 4257 } 4258 4259 4260 /** 4261 * mega_get_max_sgl() 4262 * @adapter - pointer to our soft state 4263 * 4264 * Find out the maximum number of scatter-gather elements supported by this 4265 * version of the firmware 4266 */ 4267 static void 4268 mega_get_max_sgl(adapter_t *adapter) 4269 { 4270 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4271 mbox_t *mbox; 4272 4273 mbox = (mbox_t *)raw_mbox; 4274 4275 memset(mbox, 0, sizeof(raw_mbox)); 4276 4277 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4278 4279 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4280 4281 raw_mbox[0] = MAIN_MISC_OPCODE; 4282 raw_mbox[2] = GET_MAX_SG_SUPPORT; 4283 4284 4285 if( issue_scb_block(adapter, raw_mbox) ) { 4286 /* 4287 * f/w does not support this command. Choose the default value 4288 */ 4289 adapter->sglen = MIN_SGLIST; 4290 } 4291 else { 4292 adapter->sglen = *((char *)adapter->mega_buffer); 4293 4294 /* 4295 * Make sure this is not more than the resources we are 4296 * planning to allocate 4297 */ 4298 if ( adapter->sglen > MAX_SGLIST ) 4299 adapter->sglen = MAX_SGLIST; 4300 } 4301 4302 return; 4303 } 4304 4305 4306 /** 4307 * mega_support_cluster() 4308 * @adapter - pointer to our soft state 4309 * 4310 * Find out if this firmware support cluster calls. 4311 */ 4312 static int 4313 mega_support_cluster(adapter_t *adapter) 4314 { 4315 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4316 mbox_t *mbox; 4317 4318 mbox = (mbox_t *)raw_mbox; 4319 4320 memset(mbox, 0, sizeof(raw_mbox)); 4321 4322 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4323 4324 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4325 4326 /* 4327 * Try to get the initiator id. This command will succeed iff the 4328 * clustering is available on this HBA. 4329 */ 4330 raw_mbox[0] = MEGA_GET_TARGET_ID; 4331 4332 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 4333 4334 /* 4335 * Cluster support available. Get the initiator target id. 4336 * Tell our id to mid-layer too. 4337 */ 4338 adapter->this_id = *(u32 *)adapter->mega_buffer; 4339 adapter->host->this_id = adapter->this_id; 4340 4341 return 1; 4342 } 4343 4344 return 0; 4345 } 4346 4347 4348 /** 4349 * mega_adapinq() 4350 * @adapter - pointer to our soft state 4351 * @dma_handle - DMA address of the buffer 4352 * 4353 * Issue internal comamnds while interrupts are available. 4354 * We only issue direct mailbox commands from within the driver. ioctl() 4355 * interface using these routines can issue passthru commands. 4356 */ 4357 static int 4358 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 4359 { 4360 megacmd_t mc; 4361 4362 memset(&mc, 0, sizeof(megacmd_t)); 4363 4364 if( adapter->flag & BOARD_40LD ) { 4365 mc.cmd = FC_NEW_CONFIG; 4366 mc.opcode = NC_SUBOP_ENQUIRY3; 4367 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 4368 } 4369 else { 4370 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 4371 } 4372 4373 mc.xferaddr = (u32)dma_handle; 4374 4375 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 4376 return -1; 4377 } 4378 4379 return 0; 4380 } 4381 4382 4383 /** mega_internal_dev_inquiry() 4384 * @adapter - pointer to our soft state 4385 * @ch - channel for this device 4386 * @tgt - ID of this device 4387 * @buf_dma_handle - DMA address of the buffer 4388 * 4389 * Issue the scsi inquiry for the specified device. 4390 */ 4391 static int 4392 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4393 dma_addr_t buf_dma_handle) 4394 { 4395 mega_passthru *pthru; 4396 dma_addr_t pthru_dma_handle; 4397 megacmd_t mc; 4398 int rval; 4399 struct pci_dev *pdev; 4400 4401 4402 /* 4403 * For all internal commands, the buffer must be allocated in <4GB 4404 * address range 4405 */ 4406 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4407 4408 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4409 &pthru_dma_handle); 4410 4411 if( pthru == NULL ) { 4412 free_local_pdev(pdev); 4413 return -1; 4414 } 4415 4416 pthru->timeout = 2; 4417 pthru->ars = 1; 4418 pthru->reqsenselen = 14; 4419 pthru->islogical = 0; 4420 4421 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4422 4423 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4424 4425 pthru->cdblen = 6; 4426 4427 pthru->cdb[0] = INQUIRY; 4428 pthru->cdb[1] = 0; 4429 pthru->cdb[2] = 0; 4430 pthru->cdb[3] = 0; 4431 pthru->cdb[4] = 255; 4432 pthru->cdb[5] = 0; 4433 4434 4435 pthru->dataxferaddr = (u32)buf_dma_handle; 4436 pthru->dataxferlen = 256; 4437 4438 memset(&mc, 0, sizeof(megacmd_t)); 4439 4440 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4441 mc.xferaddr = (u32)pthru_dma_handle; 4442 4443 rval = mega_internal_command(adapter, &mc, pthru); 4444 4445 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4446 pthru_dma_handle); 4447 4448 free_local_pdev(pdev); 4449 4450 return rval; 4451 } 4452 4453 4454 /** 4455 * mega_internal_command() 4456 * @adapter - pointer to our soft state 4457 * @mc - the mailbox command 4458 * @pthru - Passthru structure for DCDB commands 4459 * 4460 * Issue the internal commands in interrupt mode. 4461 * The last argument is the address of the passthru structure if the command 4462 * to be fired is a passthru command 4463 * 4464 * lockscope specifies whether the caller has already acquired the lock. Of 4465 * course, the caller must know which lock we are talking about. 4466 * 4467 * Note: parameter 'pthru' is null for non-passthru commands. 4468 */ 4469 static int 4470 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4471 { 4472 Scsi_Cmnd *scmd; 4473 struct scsi_device *sdev; 4474 scb_t *scb; 4475 int rval; 4476 4477 /* 4478 * The internal commands share one command id and hence are 4479 * serialized. This is so because we want to reserve maximum number of 4480 * available command ids for the I/O commands. 4481 */ 4482 mutex_lock(&adapter->int_mtx); 4483 4484 scb = &adapter->int_scb; 4485 memset(scb, 0, sizeof(scb_t)); 4486 4487 scmd = &adapter->int_scmd; 4488 memset(scmd, 0, sizeof(Scsi_Cmnd)); 4489 4490 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL); 4491 memset(sdev, 0, sizeof(struct scsi_device)); 4492 scmd->device = sdev; 4493 4494 scmd->device->host = adapter->host; 4495 scmd->request_buffer = (void *)scb; 4496 scmd->cmnd[0] = MEGA_INTERNAL_CMD; 4497 4498 scb->state |= SCB_ACTIVE; 4499 scb->cmd = scmd; 4500 4501 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4502 4503 /* 4504 * Is it a passthru command 4505 */ 4506 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 4507 4508 scb->pthru = pthru; 4509 } 4510 4511 scb->idx = CMDID_INT_CMDS; 4512 4513 megaraid_queue(scmd, mega_internal_done); 4514 4515 wait_for_completion(&adapter->int_waitq); 4516 4517 rval = scmd->result; 4518 mc->status = scmd->result; 4519 kfree(sdev); 4520 4521 /* 4522 * Print a debug message for all failed commands. Applications can use 4523 * this information. 4524 */ 4525 if( scmd->result && trace_level ) { 4526 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", 4527 mc->cmd, mc->opcode, mc->subopcode, scmd->result); 4528 } 4529 4530 mutex_unlock(&adapter->int_mtx); 4531 4532 return rval; 4533 } 4534 4535 4536 /** 4537 * mega_internal_done() 4538 * @scmd - internal scsi command 4539 * 4540 * Callback routine for internal commands. 4541 */ 4542 static void 4543 mega_internal_done(Scsi_Cmnd *scmd) 4544 { 4545 adapter_t *adapter; 4546 4547 adapter = (adapter_t *)scmd->device->host->hostdata; 4548 4549 complete(&adapter->int_waitq); 4550 4551 } 4552 4553 4554 static struct scsi_host_template megaraid_template = { 4555 .module = THIS_MODULE, 4556 .name = "MegaRAID", 4557 .proc_name = "megaraid_legacy", 4558 .info = megaraid_info, 4559 .queuecommand = megaraid_queue, 4560 .bios_param = megaraid_biosparam, 4561 .max_sectors = MAX_SECTORS_PER_IO, 4562 .can_queue = MAX_COMMANDS, 4563 .this_id = DEFAULT_INITIATOR_ID, 4564 .sg_tablesize = MAX_SGLIST, 4565 .cmd_per_lun = DEF_CMD_PER_LUN, 4566 .use_clustering = ENABLE_CLUSTERING, 4567 .eh_abort_handler = megaraid_abort, 4568 .eh_device_reset_handler = megaraid_reset, 4569 .eh_bus_reset_handler = megaraid_reset, 4570 .eh_host_reset_handler = megaraid_reset, 4571 }; 4572 4573 static int __devinit 4574 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4575 { 4576 struct Scsi_Host *host; 4577 adapter_t *adapter; 4578 unsigned long mega_baseport, tbase, flag = 0; 4579 u16 subsysid, subsysvid; 4580 u8 pci_bus, pci_dev_func; 4581 int irq, i, j; 4582 int error = -ENODEV; 4583 4584 if (pci_enable_device(pdev)) 4585 goto out; 4586 pci_set_master(pdev); 4587 4588 pci_bus = pdev->bus->number; 4589 pci_dev_func = pdev->devfn; 4590 4591 /* 4592 * The megaraid3 stuff reports the ID of the Intel part which is not 4593 * remotely specific to the megaraid 4594 */ 4595 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4596 u16 magic; 4597 /* 4598 * Don't fall over the Compaq management cards using the same 4599 * PCI identifier 4600 */ 4601 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4602 pdev->subsystem_device == 0xC000) 4603 return -ENODEV; 4604 /* Now check the magic signature byte */ 4605 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4606 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4607 return -ENODEV; 4608 /* Ok it is probably a megaraid */ 4609 } 4610 4611 /* 4612 * For these vendor and device ids, signature offsets are not 4613 * valid and 64 bit is implicit 4614 */ 4615 if (id->driver_data & BOARD_64BIT) 4616 flag |= BOARD_64BIT; 4617 else { 4618 u32 magic64; 4619 4620 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4621 if (magic64 == HBA_SIGNATURE_64BIT) 4622 flag |= BOARD_64BIT; 4623 } 4624 4625 subsysvid = pdev->subsystem_vendor; 4626 subsysid = pdev->subsystem_device; 4627 4628 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:", 4629 id->vendor, id->device, pci_bus); 4630 4631 printk("slot %d:func %d\n", 4632 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func)); 4633 4634 /* Read the base port and IRQ from PCI */ 4635 mega_baseport = pci_resource_start(pdev, 0); 4636 irq = pdev->irq; 4637 4638 tbase = mega_baseport; 4639 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4640 flag |= BOARD_MEMMAP; 4641 4642 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4643 printk(KERN_WARNING "megaraid: mem region busy!\n"); 4644 goto out_disable_device; 4645 } 4646 4647 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4648 if (!mega_baseport) { 4649 printk(KERN_WARNING 4650 "megaraid: could not map hba memory\n"); 4651 goto out_release_region; 4652 } 4653 } else { 4654 flag |= BOARD_IOMAP; 4655 mega_baseport += 0x10; 4656 4657 if (!request_region(mega_baseport, 16, "megaraid")) 4658 goto out_disable_device; 4659 } 4660 4661 /* Initialize SCSI Host structure */ 4662 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4663 if (!host) 4664 goto out_iounmap; 4665 4666 adapter = (adapter_t *)host->hostdata; 4667 memset(adapter, 0, sizeof(adapter_t)); 4668 4669 printk(KERN_NOTICE 4670 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4671 host->host_no, mega_baseport, irq); 4672 4673 adapter->base = mega_baseport; 4674 4675 INIT_LIST_HEAD(&adapter->free_list); 4676 INIT_LIST_HEAD(&adapter->pending_list); 4677 INIT_LIST_HEAD(&adapter->completed_list); 4678 4679 adapter->flag = flag; 4680 spin_lock_init(&adapter->lock); 4681 4682 host->cmd_per_lun = max_cmd_per_lun; 4683 host->max_sectors = max_sectors_per_io; 4684 4685 adapter->dev = pdev; 4686 adapter->host = host; 4687 4688 adapter->host->irq = irq; 4689 4690 if (flag & BOARD_MEMMAP) 4691 adapter->host->base = tbase; 4692 else { 4693 adapter->host->io_port = tbase; 4694 adapter->host->n_io_port = 16; 4695 } 4696 4697 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4698 4699 /* 4700 * Allocate buffer to issue internal commands. 4701 */ 4702 adapter->mega_buffer = pci_alloc_consistent(adapter->dev, 4703 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); 4704 if (!adapter->mega_buffer) { 4705 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4706 goto out_host_put; 4707 } 4708 4709 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL); 4710 if (!adapter->scb_list) { 4711 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4712 goto out_free_cmd_buffer; 4713 } 4714 4715 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4716 megaraid_isr_memmapped : megaraid_isr_iomapped, 4717 SA_SHIRQ, "megaraid", adapter)) { 4718 printk(KERN_WARNING 4719 "megaraid: Couldn't register IRQ %d!\n", irq); 4720 goto out_free_scb_list; 4721 } 4722 4723 if (mega_setup_mailbox(adapter)) 4724 goto out_free_irq; 4725 4726 if (mega_query_adapter(adapter)) 4727 goto out_free_mbox; 4728 4729 /* 4730 * Have checks for some buggy f/w 4731 */ 4732 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4733 /* 4734 * Which firmware 4735 */ 4736 if (!strcmp(adapter->fw_version, "3.00") || 4737 !strcmp(adapter->fw_version, "3.01")) { 4738 4739 printk( KERN_WARNING 4740 "megaraid: Your card is a Dell PERC " 4741 "2/SC RAID controller with " 4742 "firmware\nmegaraid: 3.00 or 3.01. " 4743 "This driver is known to have " 4744 "corruption issues\nmegaraid: with " 4745 "those firmware versions on this " 4746 "specific card. In order\nmegaraid: " 4747 "to protect your data, please upgrade " 4748 "your firmware to version\nmegaraid: " 4749 "3.10 or later, available from the " 4750 "Dell Technical Support web\n" 4751 "megaraid: site at\nhttp://support." 4752 "dell.com/us/en/filelib/download/" 4753 "index.asp?fileid=2940\n" 4754 ); 4755 } 4756 } 4757 4758 /* 4759 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4760 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4761 * support, since this firmware cannot handle 64 bit 4762 * addressing 4763 */ 4764 if ((subsysvid == HP_SUBSYS_VID) && 4765 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4766 /* 4767 * which firmware 4768 */ 4769 if (!strcmp(adapter->fw_version, "H01.07") || 4770 !strcmp(adapter->fw_version, "H01.08") || 4771 !strcmp(adapter->fw_version, "H01.09") ) { 4772 printk(KERN_WARNING 4773 "megaraid: Firmware H.01.07, " 4774 "H.01.08, and H.01.09 on 1M/2M " 4775 "controllers\n" 4776 "megaraid: do not support 64 bit " 4777 "addressing.\nmegaraid: DISABLING " 4778 "64 bit support.\n"); 4779 adapter->flag &= ~BOARD_64BIT; 4780 } 4781 } 4782 4783 if (mega_is_bios_enabled(adapter)) 4784 mega_hbas[hba_count].is_bios_enabled = 1; 4785 mega_hbas[hba_count].hostdata_addr = adapter; 4786 4787 /* 4788 * Find out which channel is raid and which is scsi. This is 4789 * for ROMB support. 4790 */ 4791 mega_enum_raid_scsi(adapter); 4792 4793 /* 4794 * Find out if a logical drive is set as the boot drive. If 4795 * there is one, will make that as the first logical drive. 4796 * ROMB: Do we have to boot from a physical drive. Then all 4797 * the physical drives would appear before the logical disks. 4798 * Else, all the physical drives would be exported to the mid 4799 * layer after logical drives. 4800 */ 4801 mega_get_boot_drv(adapter); 4802 4803 if (adapter->boot_pdrv_enabled) { 4804 j = adapter->product_info.nchannels; 4805 for( i = 0; i < j; i++ ) 4806 adapter->logdrv_chan[i] = 0; 4807 for( i = j; i < NVIRT_CHAN + j; i++ ) 4808 adapter->logdrv_chan[i] = 1; 4809 } else { 4810 for (i = 0; i < NVIRT_CHAN; i++) 4811 adapter->logdrv_chan[i] = 1; 4812 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4813 adapter->logdrv_chan[i] = 0; 4814 adapter->mega_ch_class <<= NVIRT_CHAN; 4815 } 4816 4817 /* 4818 * Do we support random deletion and addition of logical 4819 * drives 4820 */ 4821 adapter->read_ldidmap = 0; /* set it after first logdrv 4822 delete cmd */ 4823 adapter->support_random_del = mega_support_random_del(adapter); 4824 4825 /* Initialize SCBs */ 4826 if (mega_init_scb(adapter)) 4827 goto out_free_mbox; 4828 4829 /* 4830 * Reset the pending commands counter 4831 */ 4832 atomic_set(&adapter->pend_cmds, 0); 4833 4834 /* 4835 * Reset the adapter quiescent flag 4836 */ 4837 atomic_set(&adapter->quiescent, 0); 4838 4839 hba_soft_state[hba_count] = adapter; 4840 4841 /* 4842 * Fill in the structure which needs to be passed back to the 4843 * application when it does an ioctl() for controller related 4844 * information. 4845 */ 4846 i = hba_count; 4847 4848 mcontroller[i].base = mega_baseport; 4849 mcontroller[i].irq = irq; 4850 mcontroller[i].numldrv = adapter->numldrv; 4851 mcontroller[i].pcibus = pci_bus; 4852 mcontroller[i].pcidev = id->device; 4853 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4854 mcontroller[i].pciid = -1; 4855 mcontroller[i].pcivendor = id->vendor; 4856 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4857 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4858 4859 4860 /* Set the Mode of addressing to 64 bit if we can */ 4861 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4862 pci_set_dma_mask(pdev, DMA_64BIT_MASK); 4863 adapter->has_64bit_addr = 1; 4864 } else { 4865 pci_set_dma_mask(pdev, DMA_32BIT_MASK); 4866 adapter->has_64bit_addr = 0; 4867 } 4868 4869 mutex_init(&adapter->int_mtx); 4870 init_completion(&adapter->int_waitq); 4871 4872 adapter->this_id = DEFAULT_INITIATOR_ID; 4873 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4874 4875 #if MEGA_HAVE_CLUSTERING 4876 /* 4877 * Is cluster support enabled on this controller 4878 * Note: In a cluster the HBAs ( the initiators ) will have 4879 * different target IDs and we cannot assume it to be 7. Call 4880 * to mega_support_cluster() will get the target ids also if 4881 * the cluster support is available 4882 */ 4883 adapter->has_cluster = mega_support_cluster(adapter); 4884 if (adapter->has_cluster) { 4885 printk(KERN_NOTICE 4886 "megaraid: Cluster driver, initiator id:%d\n", 4887 adapter->this_id); 4888 } 4889 #endif 4890 4891 pci_set_drvdata(pdev, host); 4892 4893 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4894 4895 error = scsi_add_host(host, &pdev->dev); 4896 if (error) 4897 goto out_free_mbox; 4898 4899 scsi_scan_host(host); 4900 hba_count++; 4901 return 0; 4902 4903 out_free_mbox: 4904 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4905 adapter->una_mbox64, adapter->una_mbox64_dma); 4906 out_free_irq: 4907 free_irq(adapter->host->irq, adapter); 4908 out_free_scb_list: 4909 kfree(adapter->scb_list); 4910 out_free_cmd_buffer: 4911 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4912 adapter->mega_buffer, adapter->buf_dma_handle); 4913 out_host_put: 4914 scsi_host_put(host); 4915 out_iounmap: 4916 if (flag & BOARD_MEMMAP) 4917 iounmap((void *)mega_baseport); 4918 out_release_region: 4919 if (flag & BOARD_MEMMAP) 4920 release_mem_region(tbase, 128); 4921 else 4922 release_region(mega_baseport, 16); 4923 out_disable_device: 4924 pci_disable_device(pdev); 4925 out: 4926 return error; 4927 } 4928 4929 static void 4930 __megaraid_shutdown(adapter_t *adapter) 4931 { 4932 u_char raw_mbox[sizeof(struct mbox_out)]; 4933 mbox_t *mbox = (mbox_t *)raw_mbox; 4934 int i; 4935 4936 /* Flush adapter cache */ 4937 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4938 raw_mbox[0] = FLUSH_ADAPTER; 4939 4940 free_irq(adapter->host->irq, adapter); 4941 4942 /* Issue a blocking (interrupts disabled) command to the card */ 4943 issue_scb_block(adapter, raw_mbox); 4944 4945 /* Flush disks cache */ 4946 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4947 raw_mbox[0] = FLUSH_SYSTEM; 4948 4949 /* Issue a blocking (interrupts disabled) command to the card */ 4950 issue_scb_block(adapter, raw_mbox); 4951 4952 if (atomic_read(&adapter->pend_cmds) > 0) 4953 printk(KERN_WARNING "megaraid: pending commands!!\n"); 4954 4955 /* 4956 * Have a delibrate delay to make sure all the caches are 4957 * actually flushed. 4958 */ 4959 for (i = 0; i <= 10; i++) 4960 mdelay(1000); 4961 } 4962 4963 static void 4964 megaraid_remove_one(struct pci_dev *pdev) 4965 { 4966 struct Scsi_Host *host = pci_get_drvdata(pdev); 4967 adapter_t *adapter = (adapter_t *)host->hostdata; 4968 char buf[12] = { 0 }; 4969 4970 scsi_remove_host(host); 4971 4972 __megaraid_shutdown(adapter); 4973 4974 /* Free our resources */ 4975 if (adapter->flag & BOARD_MEMMAP) { 4976 iounmap((void *)adapter->base); 4977 release_mem_region(adapter->host->base, 128); 4978 } else 4979 release_region(adapter->base, 16); 4980 4981 mega_free_sgl(adapter); 4982 4983 #ifdef CONFIG_PROC_FS 4984 if (adapter->controller_proc_dir_entry) { 4985 remove_proc_entry("stat", adapter->controller_proc_dir_entry); 4986 remove_proc_entry("config", 4987 adapter->controller_proc_dir_entry); 4988 remove_proc_entry("mailbox", 4989 adapter->controller_proc_dir_entry); 4990 #if MEGA_HAVE_ENH_PROC 4991 remove_proc_entry("rebuild-rate", 4992 adapter->controller_proc_dir_entry); 4993 remove_proc_entry("battery-status", 4994 adapter->controller_proc_dir_entry); 4995 4996 remove_proc_entry("diskdrives-ch0", 4997 adapter->controller_proc_dir_entry); 4998 remove_proc_entry("diskdrives-ch1", 4999 adapter->controller_proc_dir_entry); 5000 remove_proc_entry("diskdrives-ch2", 5001 adapter->controller_proc_dir_entry); 5002 remove_proc_entry("diskdrives-ch3", 5003 adapter->controller_proc_dir_entry); 5004 5005 remove_proc_entry("raiddrives-0-9", 5006 adapter->controller_proc_dir_entry); 5007 remove_proc_entry("raiddrives-10-19", 5008 adapter->controller_proc_dir_entry); 5009 remove_proc_entry("raiddrives-20-29", 5010 adapter->controller_proc_dir_entry); 5011 remove_proc_entry("raiddrives-30-39", 5012 adapter->controller_proc_dir_entry); 5013 #endif 5014 sprintf(buf, "hba%d", adapter->host->host_no); 5015 remove_proc_entry(buf, mega_proc_dir_entry); 5016 } 5017 #endif 5018 5019 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 5020 adapter->mega_buffer, adapter->buf_dma_handle); 5021 kfree(adapter->scb_list); 5022 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 5023 adapter->una_mbox64, adapter->una_mbox64_dma); 5024 5025 scsi_host_put(host); 5026 pci_disable_device(pdev); 5027 5028 hba_count--; 5029 } 5030 5031 static void 5032 megaraid_shutdown(struct pci_dev *pdev) 5033 { 5034 struct Scsi_Host *host = pci_get_drvdata(pdev); 5035 adapter_t *adapter = (adapter_t *)host->hostdata; 5036 5037 __megaraid_shutdown(adapter); 5038 } 5039 5040 static struct pci_device_id megaraid_pci_tbl[] = { 5041 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 5042 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5043 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 5044 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5045 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 5046 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5047 {0,} 5048 }; 5049 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 5050 5051 static struct pci_driver megaraid_pci_driver = { 5052 .name = "megaraid_legacy", 5053 .id_table = megaraid_pci_tbl, 5054 .probe = megaraid_probe_one, 5055 .remove = __devexit_p(megaraid_remove_one), 5056 .shutdown = megaraid_shutdown, 5057 }; 5058 5059 static int __init megaraid_init(void) 5060 { 5061 int error; 5062 5063 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 5064 max_cmd_per_lun = MAX_CMD_PER_LUN; 5065 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 5066 max_mbox_busy_wait = MBOX_BUSY_WAIT; 5067 5068 #ifdef CONFIG_PROC_FS 5069 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root); 5070 if (!mega_proc_dir_entry) { 5071 printk(KERN_WARNING 5072 "megaraid: failed to create megaraid root\n"); 5073 } 5074 #endif 5075 error = pci_module_init(&megaraid_pci_driver); 5076 if (error) { 5077 #ifdef CONFIG_PROC_FS 5078 remove_proc_entry("megaraid", &proc_root); 5079 #endif 5080 return error; 5081 } 5082 5083 /* 5084 * Register the driver as a character device, for applications 5085 * to access it for ioctls. 5086 * First argument (major) to register_chrdev implies a dynamic 5087 * major number allocation. 5088 */ 5089 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 5090 if (!major) { 5091 printk(KERN_WARNING 5092 "megaraid: failed to register char device\n"); 5093 } 5094 5095 return 0; 5096 } 5097 5098 static void __exit megaraid_exit(void) 5099 { 5100 /* 5101 * Unregister the character device interface to the driver. 5102 */ 5103 unregister_chrdev(major, "megadev_legacy"); 5104 5105 pci_unregister_driver(&megaraid_pci_driver); 5106 5107 #ifdef CONFIG_PROC_FS 5108 remove_proc_entry("megaraid", &proc_root); 5109 #endif 5110 } 5111 5112 module_init(megaraid_init); 5113 module_exit(megaraid_exit); 5114 5115 /* vi: set ts=8 sw=8 tw=78: */ 5116