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)->mmio_base + 0x20) 77 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C) 78 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20) 79 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_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 * 1260 * Interrupt service routine for io-mapped controllers. 1261 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1262 * and service the completed commands. 1263 */ 1264 static irqreturn_t 1265 megaraid_isr_iomapped(int irq, void *devp) 1266 { 1267 adapter_t *adapter = devp; 1268 unsigned long flags; 1269 u8 status; 1270 u8 nstatus; 1271 u8 completed[MAX_FIRMWARE_STATUS]; 1272 u8 byte; 1273 int handled = 0; 1274 1275 1276 /* 1277 * loop till F/W has more commands for us to complete. 1278 */ 1279 spin_lock_irqsave(&adapter->lock, flags); 1280 1281 do { 1282 /* Check if a valid interrupt is pending */ 1283 byte = irq_state(adapter); 1284 if( (byte & VALID_INTR_BYTE) == 0 ) { 1285 /* 1286 * No more pending commands 1287 */ 1288 goto out_unlock; 1289 } 1290 set_irq_state(adapter, byte); 1291 1292 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1293 == 0xFF) 1294 cpu_relax(); 1295 adapter->mbox->m_in.numstatus = 0xFF; 1296 1297 status = adapter->mbox->m_in.status; 1298 1299 /* 1300 * decrement the pending queue counter 1301 */ 1302 atomic_sub(nstatus, &adapter->pend_cmds); 1303 1304 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1305 nstatus); 1306 1307 /* Acknowledge interrupt */ 1308 irq_ack(adapter); 1309 1310 mega_cmd_done(adapter, completed, nstatus, status); 1311 1312 mega_rundoneq(adapter); 1313 1314 handled = 1; 1315 1316 /* Loop through any pending requests */ 1317 if(atomic_read(&adapter->quiescent) == 0) { 1318 mega_runpendq(adapter); 1319 } 1320 1321 } while(1); 1322 1323 out_unlock: 1324 1325 spin_unlock_irqrestore(&adapter->lock, flags); 1326 1327 return IRQ_RETVAL(handled); 1328 } 1329 1330 1331 /** 1332 * megaraid_isr_memmapped() 1333 * @irq - irq 1334 * @devp - pointer to our soft state 1335 * 1336 * Interrupt service routine for memory-mapped controllers. 1337 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1338 * and service the completed commands. 1339 */ 1340 static irqreturn_t 1341 megaraid_isr_memmapped(int irq, void *devp) 1342 { 1343 adapter_t *adapter = devp; 1344 unsigned long flags; 1345 u8 status; 1346 u32 dword = 0; 1347 u8 nstatus; 1348 u8 completed[MAX_FIRMWARE_STATUS]; 1349 int handled = 0; 1350 1351 1352 /* 1353 * loop till F/W has more commands for us to complete. 1354 */ 1355 spin_lock_irqsave(&adapter->lock, flags); 1356 1357 do { 1358 /* Check if a valid interrupt is pending */ 1359 dword = RDOUTDOOR(adapter); 1360 if(dword != 0x10001234) { 1361 /* 1362 * No more pending commands 1363 */ 1364 goto out_unlock; 1365 } 1366 WROUTDOOR(adapter, 0x10001234); 1367 1368 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1369 == 0xFF) { 1370 cpu_relax(); 1371 } 1372 adapter->mbox->m_in.numstatus = 0xFF; 1373 1374 status = adapter->mbox->m_in.status; 1375 1376 /* 1377 * decrement the pending queue counter 1378 */ 1379 atomic_sub(nstatus, &adapter->pend_cmds); 1380 1381 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1382 nstatus); 1383 1384 /* Acknowledge interrupt */ 1385 WRINDOOR(adapter, 0x2); 1386 1387 handled = 1; 1388 1389 while( RDINDOOR(adapter) & 0x02 ) 1390 cpu_relax(); 1391 1392 mega_cmd_done(adapter, completed, nstatus, status); 1393 1394 mega_rundoneq(adapter); 1395 1396 /* Loop through any pending requests */ 1397 if(atomic_read(&adapter->quiescent) == 0) { 1398 mega_runpendq(adapter); 1399 } 1400 1401 } while(1); 1402 1403 out_unlock: 1404 1405 spin_unlock_irqrestore(&adapter->lock, flags); 1406 1407 return IRQ_RETVAL(handled); 1408 } 1409 /** 1410 * mega_cmd_done() 1411 * @adapter - pointer to our soft state 1412 * @completed - array of ids of completed commands 1413 * @nstatus - number of completed commands 1414 * @status - status of the last command completed 1415 * 1416 * Complete the comamnds and call the scsi mid-layer callback hooks. 1417 */ 1418 static void 1419 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1420 { 1421 mega_ext_passthru *epthru = NULL; 1422 struct scatterlist *sgl; 1423 Scsi_Cmnd *cmd = NULL; 1424 mega_passthru *pthru = NULL; 1425 mbox_t *mbox = NULL; 1426 u8 c; 1427 scb_t *scb; 1428 int islogical; 1429 int cmdid; 1430 int i; 1431 1432 /* 1433 * for all the commands completed, call the mid-layer callback routine 1434 * and free the scb. 1435 */ 1436 for( i = 0; i < nstatus; i++ ) { 1437 1438 cmdid = completed[i]; 1439 1440 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1441 scb = &adapter->int_scb; 1442 cmd = scb->cmd; 1443 mbox = (mbox_t *)scb->raw_mbox; 1444 1445 /* 1446 * Internal command interface do not fire the extended 1447 * passthru or 64-bit passthru 1448 */ 1449 pthru = scb->pthru; 1450 1451 } 1452 else { 1453 scb = &adapter->scb_list[cmdid]; 1454 1455 /* 1456 * Make sure f/w has completed a valid command 1457 */ 1458 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1459 printk(KERN_CRIT 1460 "megaraid: invalid command "); 1461 printk("Id %d, scb->state:%x, scsi cmd:%p\n", 1462 cmdid, scb->state, scb->cmd); 1463 1464 continue; 1465 } 1466 1467 /* 1468 * Was a abort issued for this command 1469 */ 1470 if( scb->state & SCB_ABORT ) { 1471 1472 printk(KERN_WARNING 1473 "megaraid: aborted cmd %lx[%x] complete.\n", 1474 scb->cmd->serial_number, scb->idx); 1475 1476 scb->cmd->result = (DID_ABORT << 16); 1477 1478 list_add_tail(SCSI_LIST(scb->cmd), 1479 &adapter->completed_list); 1480 1481 mega_free_scb(adapter, scb); 1482 1483 continue; 1484 } 1485 1486 /* 1487 * Was a reset issued for this command 1488 */ 1489 if( scb->state & SCB_RESET ) { 1490 1491 printk(KERN_WARNING 1492 "megaraid: reset cmd %lx[%x] complete.\n", 1493 scb->cmd->serial_number, scb->idx); 1494 1495 scb->cmd->result = (DID_RESET << 16); 1496 1497 list_add_tail(SCSI_LIST(scb->cmd), 1498 &adapter->completed_list); 1499 1500 mega_free_scb (adapter, scb); 1501 1502 continue; 1503 } 1504 1505 cmd = scb->cmd; 1506 pthru = scb->pthru; 1507 epthru = scb->epthru; 1508 mbox = (mbox_t *)scb->raw_mbox; 1509 1510 #if MEGA_HAVE_STATS 1511 { 1512 1513 int logdrv = mbox->m_out.logdrv; 1514 1515 islogical = adapter->logdrv_chan[cmd->channel]; 1516 /* 1517 * Maintain an error counter for the logical drive. 1518 * Some application like SNMP agent need such 1519 * statistics 1520 */ 1521 if( status && islogical && (cmd->cmnd[0] == READ_6 || 1522 cmd->cmnd[0] == READ_10 || 1523 cmd->cmnd[0] == READ_12)) { 1524 /* 1525 * Logical drive number increases by 0x80 when 1526 * a logical drive is deleted 1527 */ 1528 adapter->rd_errors[logdrv%0x80]++; 1529 } 1530 1531 if( status && islogical && (cmd->cmnd[0] == WRITE_6 || 1532 cmd->cmnd[0] == WRITE_10 || 1533 cmd->cmnd[0] == WRITE_12)) { 1534 /* 1535 * Logical drive number increases by 0x80 when 1536 * a logical drive is deleted 1537 */ 1538 adapter->wr_errors[logdrv%0x80]++; 1539 } 1540 1541 } 1542 #endif 1543 } 1544 1545 /* 1546 * Do not return the presence of hard disk on the channel so, 1547 * inquiry sent, and returned data==hard disk or removable 1548 * hard disk and not logical, request should return failure! - 1549 * PJ 1550 */ 1551 islogical = adapter->logdrv_chan[cmd->device->channel]; 1552 if( cmd->cmnd[0] == INQUIRY && !islogical ) { 1553 1554 if( cmd->use_sg ) { 1555 sgl = (struct scatterlist *) 1556 cmd->request_buffer; 1557 1558 if( sgl->page ) { 1559 c = *(unsigned char *) 1560 page_address((&sgl[0])->page) + 1561 (&sgl[0])->offset; 1562 } 1563 else { 1564 printk(KERN_WARNING 1565 "megaraid: invalid sg.\n"); 1566 c = 0; 1567 } 1568 } 1569 else { 1570 c = *(u8 *)cmd->request_buffer; 1571 } 1572 1573 if(IS_RAID_CH(adapter, cmd->device->channel) && 1574 ((c & 0x1F ) == TYPE_DISK)) { 1575 status = 0xF0; 1576 } 1577 } 1578 1579 /* clear result; otherwise, success returns corrupt value */ 1580 cmd->result = 0; 1581 1582 /* Convert MegaRAID status to Linux error code */ 1583 switch (status) { 1584 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1585 cmd->result |= (DID_OK << 16); 1586 break; 1587 1588 case 0x02: /* ERROR_ABORTED, i.e. 1589 SCSI_STATUS_CHECK_CONDITION */ 1590 1591 /* set sense_buffer and result fields */ 1592 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1593 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1594 1595 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1596 14); 1597 1598 cmd->result = (DRIVER_SENSE << 24) | 1599 (DID_OK << 16) | 1600 (CHECK_CONDITION << 1); 1601 } 1602 else { 1603 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1604 1605 memcpy(cmd->sense_buffer, 1606 epthru->reqsensearea, 14); 1607 1608 cmd->result = (DRIVER_SENSE << 24) | 1609 (DID_OK << 16) | 1610 (CHECK_CONDITION << 1); 1611 } else { 1612 cmd->sense_buffer[0] = 0x70; 1613 cmd->sense_buffer[2] = ABORTED_COMMAND; 1614 cmd->result |= (CHECK_CONDITION << 1); 1615 } 1616 } 1617 break; 1618 1619 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1620 SCSI_STATUS_BUSY */ 1621 cmd->result |= (DID_BUS_BUSY << 16) | status; 1622 break; 1623 1624 default: 1625 #if MEGA_HAVE_CLUSTERING 1626 /* 1627 * If TEST_UNIT_READY fails, we know 1628 * MEGA_RESERVATION_STATUS failed 1629 */ 1630 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1631 cmd->result |= (DID_ERROR << 16) | 1632 (RESERVATION_CONFLICT << 1); 1633 } 1634 else 1635 /* 1636 * Error code returned is 1 if Reserve or Release 1637 * failed or the input parameter is invalid 1638 */ 1639 if( status == 1 && 1640 (cmd->cmnd[0] == RESERVE || 1641 cmd->cmnd[0] == RELEASE) ) { 1642 1643 cmd->result |= (DID_ERROR << 16) | 1644 (RESERVATION_CONFLICT << 1); 1645 } 1646 else 1647 #endif 1648 cmd->result |= (DID_BAD_TARGET << 16)|status; 1649 } 1650 1651 /* 1652 * Only free SCBs for the commands coming down from the 1653 * mid-layer, not for which were issued internally 1654 * 1655 * For internal command, restore the status returned by the 1656 * firmware so that user can interpret it. 1657 */ 1658 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1659 cmd->result = status; 1660 1661 /* 1662 * Remove the internal command from the pending list 1663 */ 1664 list_del_init(&scb->list); 1665 scb->state = SCB_FREE; 1666 } 1667 else { 1668 mega_free_scb(adapter, scb); 1669 } 1670 1671 /* Add Scsi_Command to end of completed queue */ 1672 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1673 } 1674 } 1675 1676 1677 /* 1678 * mega_runpendq() 1679 * 1680 * Run through the list of completed requests and finish it 1681 */ 1682 static void 1683 mega_rundoneq (adapter_t *adapter) 1684 { 1685 Scsi_Cmnd *cmd; 1686 struct list_head *pos; 1687 1688 list_for_each(pos, &adapter->completed_list) { 1689 1690 struct scsi_pointer* spos = (struct scsi_pointer *)pos; 1691 1692 cmd = list_entry(spos, Scsi_Cmnd, SCp); 1693 cmd->scsi_done(cmd); 1694 } 1695 1696 INIT_LIST_HEAD(&adapter->completed_list); 1697 } 1698 1699 1700 /* 1701 * Free a SCB structure 1702 * Note: We assume the scsi commands associated with this scb is not free yet. 1703 */ 1704 static void 1705 mega_free_scb(adapter_t *adapter, scb_t *scb) 1706 { 1707 unsigned long length; 1708 1709 switch( scb->dma_type ) { 1710 1711 case MEGA_DMA_TYPE_NONE: 1712 break; 1713 1714 case MEGA_BULK_DATA: 1715 if (scb->cmd->use_sg == 0) 1716 length = scb->cmd->request_bufflen; 1717 else { 1718 struct scatterlist *sgl = 1719 (struct scatterlist *)scb->cmd->request_buffer; 1720 length = sgl->length; 1721 } 1722 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata, 1723 length, scb->dma_direction); 1724 break; 1725 1726 case MEGA_SGLIST: 1727 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer, 1728 scb->cmd->use_sg, scb->dma_direction); 1729 break; 1730 1731 default: 1732 break; 1733 } 1734 1735 /* 1736 * Remove from the pending list 1737 */ 1738 list_del_init(&scb->list); 1739 1740 /* Link the scb back into free list */ 1741 scb->state = SCB_FREE; 1742 scb->cmd = NULL; 1743 1744 list_add(&scb->list, &adapter->free_list); 1745 } 1746 1747 1748 static int 1749 __mega_busywait_mbox (adapter_t *adapter) 1750 { 1751 volatile mbox_t *mbox = adapter->mbox; 1752 long counter; 1753 1754 for (counter = 0; counter < 10000; counter++) { 1755 if (!mbox->m_in.busy) 1756 return 0; 1757 udelay(100); yield(); 1758 } 1759 return -1; /* give up after 1 second */ 1760 } 1761 1762 /* 1763 * Copies data to SGLIST 1764 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1765 */ 1766 static int 1767 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1768 { 1769 struct scatterlist *sgl; 1770 struct page *page; 1771 unsigned long offset; 1772 unsigned int length; 1773 Scsi_Cmnd *cmd; 1774 int sgcnt; 1775 int idx; 1776 1777 cmd = scb->cmd; 1778 1779 /* Scatter-gather not used */ 1780 if( cmd->use_sg == 0 || (cmd->use_sg == 1 && 1781 !adapter->has_64bit_addr)) { 1782 1783 if (cmd->use_sg == 0) { 1784 page = virt_to_page(cmd->request_buffer); 1785 offset = offset_in_page(cmd->request_buffer); 1786 length = cmd->request_bufflen; 1787 } else { 1788 sgl = (struct scatterlist *)cmd->request_buffer; 1789 page = sgl->page; 1790 offset = sgl->offset; 1791 length = sgl->length; 1792 } 1793 1794 scb->dma_h_bulkdata = pci_map_page(adapter->dev, 1795 page, offset, 1796 length, 1797 scb->dma_direction); 1798 scb->dma_type = MEGA_BULK_DATA; 1799 1800 /* 1801 * We need to handle special 64-bit commands that need a 1802 * minimum of 1 SG 1803 */ 1804 if( adapter->has_64bit_addr ) { 1805 scb->sgl64[0].address = scb->dma_h_bulkdata; 1806 scb->sgl64[0].length = length; 1807 *buf = (u32)scb->sgl_dma_addr; 1808 *len = (u32)length; 1809 return 1; 1810 } 1811 else { 1812 *buf = (u32)scb->dma_h_bulkdata; 1813 *len = (u32)length; 1814 } 1815 return 0; 1816 } 1817 1818 sgl = (struct scatterlist *)cmd->request_buffer; 1819 1820 /* 1821 * Copy Scatter-Gather list info into controller structure. 1822 * 1823 * The number of sg elements returned must not exceed our limit 1824 */ 1825 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg, 1826 scb->dma_direction); 1827 1828 scb->dma_type = MEGA_SGLIST; 1829 1830 BUG_ON(sgcnt > adapter->sglen); 1831 1832 *len = 0; 1833 1834 for( idx = 0; idx < sgcnt; idx++, sgl++ ) { 1835 1836 if( adapter->has_64bit_addr ) { 1837 scb->sgl64[idx].address = sg_dma_address(sgl); 1838 *len += scb->sgl64[idx].length = sg_dma_len(sgl); 1839 } 1840 else { 1841 scb->sgl[idx].address = sg_dma_address(sgl); 1842 *len += scb->sgl[idx].length = sg_dma_len(sgl); 1843 } 1844 } 1845 1846 /* Reset pointer and length fields */ 1847 *buf = scb->sgl_dma_addr; 1848 1849 /* Return count of SG requests */ 1850 return sgcnt; 1851 } 1852 1853 1854 /* 1855 * mega_8_to_40ld() 1856 * 1857 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1858 * Enquiry3 structures for later use 1859 */ 1860 static void 1861 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1862 mega_product_info *product_info) 1863 { 1864 int i; 1865 1866 product_info->max_commands = inquiry->adapter_info.max_commands; 1867 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1868 product_info->nchannels = inquiry->adapter_info.nchannels; 1869 1870 for (i = 0; i < 4; i++) { 1871 product_info->fw_version[i] = 1872 inquiry->adapter_info.fw_version[i]; 1873 1874 product_info->bios_version[i] = 1875 inquiry->adapter_info.bios_version[i]; 1876 } 1877 enquiry3->cache_flush_interval = 1878 inquiry->adapter_info.cache_flush_interval; 1879 1880 product_info->dram_size = inquiry->adapter_info.dram_size; 1881 1882 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1883 1884 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1885 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1886 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1887 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1888 } 1889 1890 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1891 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1892 } 1893 1894 static inline void 1895 mega_free_sgl(adapter_t *adapter) 1896 { 1897 scb_t *scb; 1898 int i; 1899 1900 for(i = 0; i < adapter->max_cmds; i++) { 1901 1902 scb = &adapter->scb_list[i]; 1903 1904 if( scb->sgl64 ) { 1905 pci_free_consistent(adapter->dev, 1906 sizeof(mega_sgl64) * adapter->sglen, 1907 scb->sgl64, 1908 scb->sgl_dma_addr); 1909 1910 scb->sgl64 = NULL; 1911 } 1912 1913 if( scb->pthru ) { 1914 pci_free_consistent(adapter->dev, sizeof(mega_passthru), 1915 scb->pthru, scb->pthru_dma_addr); 1916 1917 scb->pthru = NULL; 1918 } 1919 1920 if( scb->epthru ) { 1921 pci_free_consistent(adapter->dev, 1922 sizeof(mega_ext_passthru), 1923 scb->epthru, scb->epthru_dma_addr); 1924 1925 scb->epthru = NULL; 1926 } 1927 1928 } 1929 } 1930 1931 1932 /* 1933 * Get information about the card/driver 1934 */ 1935 const char * 1936 megaraid_info(struct Scsi_Host *host) 1937 { 1938 static char buffer[512]; 1939 adapter_t *adapter; 1940 1941 adapter = (adapter_t *)host->hostdata; 1942 1943 sprintf (buffer, 1944 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1945 adapter->fw_version, adapter->product_info.max_commands, 1946 adapter->host->max_id, adapter->host->max_channel, 1947 adapter->host->max_lun); 1948 return buffer; 1949 } 1950 1951 /* 1952 * Abort a previous SCSI request. Only commands on the pending list can be 1953 * aborted. All the commands issued to the F/W must complete. 1954 */ 1955 static int 1956 megaraid_abort(Scsi_Cmnd *cmd) 1957 { 1958 adapter_t *adapter; 1959 int rval; 1960 1961 adapter = (adapter_t *)cmd->device->host->hostdata; 1962 1963 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1964 1965 /* 1966 * This is required here to complete any completed requests 1967 * to be communicated over to the mid layer. 1968 */ 1969 mega_rundoneq(adapter); 1970 1971 return rval; 1972 } 1973 1974 1975 static int 1976 megaraid_reset(struct scsi_cmnd *cmd) 1977 { 1978 adapter_t *adapter; 1979 megacmd_t mc; 1980 int rval; 1981 1982 adapter = (adapter_t *)cmd->device->host->hostdata; 1983 1984 #if MEGA_HAVE_CLUSTERING 1985 mc.cmd = MEGA_CLUSTER_CMD; 1986 mc.opcode = MEGA_RESET_RESERVATIONS; 1987 1988 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1989 printk(KERN_WARNING 1990 "megaraid: reservation reset failed.\n"); 1991 } 1992 else { 1993 printk(KERN_INFO "megaraid: reservation reset.\n"); 1994 } 1995 #endif 1996 1997 spin_lock_irq(&adapter->lock); 1998 1999 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 2000 2001 /* 2002 * This is required here to complete any completed requests 2003 * to be communicated over to the mid layer. 2004 */ 2005 mega_rundoneq(adapter); 2006 spin_unlock_irq(&adapter->lock); 2007 2008 return rval; 2009 } 2010 2011 /** 2012 * megaraid_abort_and_reset() 2013 * @adapter - megaraid soft state 2014 * @cmd - scsi command to be aborted or reset 2015 * @aor - abort or reset flag 2016 * 2017 * Try to locate the scsi command in the pending queue. If found and is not 2018 * issued to the controller, abort/reset it. Otherwise return failure 2019 */ 2020 static int 2021 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor) 2022 { 2023 struct list_head *pos, *next; 2024 scb_t *scb; 2025 2026 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n", 2027 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number, 2028 cmd->cmnd[0], cmd->device->channel, 2029 cmd->device->id, cmd->device->lun); 2030 2031 if(list_empty(&adapter->pending_list)) 2032 return FALSE; 2033 2034 list_for_each_safe(pos, next, &adapter->pending_list) { 2035 2036 scb = list_entry(pos, scb_t, list); 2037 2038 if (scb->cmd == cmd) { /* Found command */ 2039 2040 scb->state |= aor; 2041 2042 /* 2043 * Check if this command has firmare owenership. If 2044 * yes, we cannot reset this command. Whenever, f/w 2045 * completes this command, we will return appropriate 2046 * status from ISR. 2047 */ 2048 if( scb->state & SCB_ISSUED ) { 2049 2050 printk(KERN_WARNING 2051 "megaraid: %s-%lx[%x], fw owner.\n", 2052 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2053 cmd->serial_number, scb->idx); 2054 2055 return FALSE; 2056 } 2057 else { 2058 2059 /* 2060 * Not yet issued! Remove from the pending 2061 * list 2062 */ 2063 printk(KERN_WARNING 2064 "megaraid: %s-%lx[%x], driver owner.\n", 2065 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2066 cmd->serial_number, scb->idx); 2067 2068 mega_free_scb(adapter, scb); 2069 2070 if( aor == SCB_ABORT ) { 2071 cmd->result = (DID_ABORT << 16); 2072 } 2073 else { 2074 cmd->result = (DID_RESET << 16); 2075 } 2076 2077 list_add_tail(SCSI_LIST(cmd), 2078 &adapter->completed_list); 2079 2080 return TRUE; 2081 } 2082 } 2083 } 2084 2085 return FALSE; 2086 } 2087 2088 static inline int 2089 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2090 { 2091 *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL); 2092 2093 if( *pdev == NULL ) return -1; 2094 2095 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2096 2097 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) { 2098 kfree(*pdev); 2099 return -1; 2100 } 2101 2102 return 0; 2103 } 2104 2105 static inline void 2106 free_local_pdev(struct pci_dev *pdev) 2107 { 2108 kfree(pdev); 2109 } 2110 2111 /** 2112 * mega_allocate_inquiry() 2113 * @dma_handle - handle returned for dma address 2114 * @pdev - handle to pci device 2115 * 2116 * allocates memory for inquiry structure 2117 */ 2118 static inline void * 2119 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2120 { 2121 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2122 } 2123 2124 2125 static inline void 2126 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2127 { 2128 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2129 } 2130 2131 2132 #ifdef CONFIG_PROC_FS 2133 /* Following code handles /proc fs */ 2134 2135 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \ 2136 S_IRUSR | S_IFREG, \ 2137 controller_proc_dir_entry, \ 2138 func, adapter) 2139 2140 /** 2141 * mega_create_proc_entry() 2142 * @index - index in soft state array 2143 * @parent - parent node for this /proc entry 2144 * 2145 * Creates /proc entries for our controllers. 2146 */ 2147 static void 2148 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2149 { 2150 struct proc_dir_entry *controller_proc_dir_entry = NULL; 2151 u8 string[64] = { 0 }; 2152 adapter_t *adapter = hba_soft_state[index]; 2153 2154 sprintf(string, "hba%d", adapter->host->host_no); 2155 2156 controller_proc_dir_entry = 2157 adapter->controller_proc_dir_entry = proc_mkdir(string, parent); 2158 2159 if(!controller_proc_dir_entry) { 2160 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n"); 2161 return; 2162 } 2163 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config); 2164 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat); 2165 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox); 2166 #if MEGA_HAVE_ENH_PROC 2167 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate); 2168 adapter->proc_battery = CREATE_READ_PROC("battery-status", 2169 proc_battery); 2170 2171 /* 2172 * Display each physical drive on its channel 2173 */ 2174 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0", 2175 proc_pdrv_ch0); 2176 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1", 2177 proc_pdrv_ch1); 2178 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2", 2179 proc_pdrv_ch2); 2180 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3", 2181 proc_pdrv_ch3); 2182 2183 /* 2184 * Display a set of up to 10 logical drive through each of following 2185 * /proc entries 2186 */ 2187 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9", 2188 proc_rdrv_10); 2189 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19", 2190 proc_rdrv_20); 2191 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29", 2192 proc_rdrv_30); 2193 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39", 2194 proc_rdrv_40); 2195 #endif 2196 } 2197 2198 2199 /** 2200 * proc_read_config() 2201 * @page - buffer to write the data in 2202 * @start - where the actual data has been written in page 2203 * @offset - same meaning as the read system call 2204 * @count - same meaning as the read system call 2205 * @eof - set if no more data needs to be returned 2206 * @data - pointer to our soft state 2207 * 2208 * Display configuration information about the controller. 2209 */ 2210 static int 2211 proc_read_config(char *page, char **start, off_t offset, int count, int *eof, 2212 void *data) 2213 { 2214 2215 adapter_t *adapter = (adapter_t *)data; 2216 int len = 0; 2217 2218 len += sprintf(page+len, "%s", MEGARAID_VERSION); 2219 2220 if(adapter->product_info.product_name[0]) 2221 len += sprintf(page+len, "%s\n", 2222 adapter->product_info.product_name); 2223 2224 len += sprintf(page+len, "Controller Type: "); 2225 2226 if( adapter->flag & BOARD_MEMMAP ) { 2227 len += sprintf(page+len, 2228 "438/466/467/471/493/518/520/531/532\n"); 2229 } 2230 else { 2231 len += sprintf(page+len, 2232 "418/428/434\n"); 2233 } 2234 2235 if(adapter->flag & BOARD_40LD) { 2236 len += sprintf(page+len, 2237 "Controller Supports 40 Logical Drives\n"); 2238 } 2239 2240 if(adapter->flag & BOARD_64BIT) { 2241 len += sprintf(page+len, 2242 "Controller capable of 64-bit memory addressing\n"); 2243 } 2244 if( adapter->has_64bit_addr ) { 2245 len += sprintf(page+len, 2246 "Controller using 64-bit memory addressing\n"); 2247 } 2248 else { 2249 len += sprintf(page+len, 2250 "Controller is not using 64-bit memory addressing\n"); 2251 } 2252 2253 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base, 2254 adapter->host->irq); 2255 2256 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n", 2257 adapter->numldrv, adapter->product_info.nchannels); 2258 2259 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n", 2260 adapter->fw_version, adapter->bios_version, 2261 adapter->product_info.dram_size); 2262 2263 len += sprintf(page+len, 2264 "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2265 adapter->product_info.max_commands, adapter->max_cmds); 2266 2267 len += sprintf(page+len, "support_ext_cdb = %d\n", 2268 adapter->support_ext_cdb); 2269 len += sprintf(page+len, "support_random_del = %d\n", 2270 adapter->support_random_del); 2271 len += sprintf(page+len, "boot_ldrv_enabled = %d\n", 2272 adapter->boot_ldrv_enabled); 2273 len += sprintf(page+len, "boot_ldrv = %d\n", 2274 adapter->boot_ldrv); 2275 len += sprintf(page+len, "boot_pdrv_enabled = %d\n", 2276 adapter->boot_pdrv_enabled); 2277 len += sprintf(page+len, "boot_pdrv_ch = %d\n", 2278 adapter->boot_pdrv_ch); 2279 len += sprintf(page+len, "boot_pdrv_tgt = %d\n", 2280 adapter->boot_pdrv_tgt); 2281 len += sprintf(page+len, "quiescent = %d\n", 2282 atomic_read(&adapter->quiescent)); 2283 len += sprintf(page+len, "has_cluster = %d\n", 2284 adapter->has_cluster); 2285 2286 len += sprintf(page+len, "\nModule Parameters:\n"); 2287 len += sprintf(page+len, "max_cmd_per_lun = %d\n", 2288 max_cmd_per_lun); 2289 len += sprintf(page+len, "max_sectors_per_io = %d\n", 2290 max_sectors_per_io); 2291 2292 *eof = 1; 2293 2294 return len; 2295 } 2296 2297 2298 2299 /** 2300 * proc_read_stat() 2301 * @page - buffer to write the data in 2302 * @start - where the actual data has been written in page 2303 * @offset - same meaning as the read system call 2304 * @count - same meaning as the read system call 2305 * @eof - set if no more data needs to be returned 2306 * @data - pointer to our soft state 2307 * 2308 * Diaplay statistical information about the I/O activity. 2309 */ 2310 static int 2311 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof, 2312 void *data) 2313 { 2314 adapter_t *adapter; 2315 int len; 2316 int i; 2317 2318 i = 0; /* avoid compilation warnings */ 2319 len = 0; 2320 adapter = (adapter_t *)data; 2321 2322 len = sprintf(page, "Statistical Information for this controller\n"); 2323 len += sprintf(page+len, "pend_cmds = %d\n", 2324 atomic_read(&adapter->pend_cmds)); 2325 #if MEGA_HAVE_STATS 2326 for(i = 0; i < adapter->numldrv; i++) { 2327 len += sprintf(page+len, "Logical Drive %d:\n", i); 2328 2329 len += sprintf(page+len, 2330 "\tReads Issued = %lu, Writes Issued = %lu\n", 2331 adapter->nreads[i], adapter->nwrites[i]); 2332 2333 len += sprintf(page+len, 2334 "\tSectors Read = %lu, Sectors Written = %lu\n", 2335 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2336 2337 len += sprintf(page+len, 2338 "\tRead errors = %lu, Write errors = %lu\n\n", 2339 adapter->rd_errors[i], adapter->wr_errors[i]); 2340 } 2341 #else 2342 len += sprintf(page+len, 2343 "IO and error counters not compiled in driver.\n"); 2344 #endif 2345 2346 *eof = 1; 2347 2348 return len; 2349 } 2350 2351 2352 /** 2353 * proc_read_mbox() 2354 * @page - buffer to write the data in 2355 * @start - where the actual data has been written in page 2356 * @offset - same meaning as the read system call 2357 * @count - same meaning as the read system call 2358 * @eof - set if no more data needs to be returned 2359 * @data - pointer to our soft state 2360 * 2361 * Display mailbox information for the last command issued. This information 2362 * is good for debugging. 2363 */ 2364 static int 2365 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof, 2366 void *data) 2367 { 2368 2369 adapter_t *adapter = (adapter_t *)data; 2370 volatile mbox_t *mbox = adapter->mbox; 2371 int len = 0; 2372 2373 len = sprintf(page, "Contents of Mail Box Structure\n"); 2374 len += sprintf(page+len, " Fw Command = 0x%02x\n", 2375 mbox->m_out.cmd); 2376 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n", 2377 mbox->m_out.cmdid); 2378 len += sprintf(page+len, " No of Sectors= %04d\n", 2379 mbox->m_out.numsectors); 2380 len += sprintf(page+len, " LBA = 0x%02x\n", 2381 mbox->m_out.lba); 2382 len += sprintf(page+len, " DTA = 0x%08x\n", 2383 mbox->m_out.xferaddr); 2384 len += sprintf(page+len, " Logical Drive= 0x%02x\n", 2385 mbox->m_out.logdrv); 2386 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n", 2387 mbox->m_out.numsgelements); 2388 len += sprintf(page+len, " Busy = %01x\n", 2389 mbox->m_in.busy); 2390 len += sprintf(page+len, " Status = 0x%02x\n", 2391 mbox->m_in.status); 2392 2393 *eof = 1; 2394 2395 return len; 2396 } 2397 2398 2399 /** 2400 * proc_rebuild_rate() 2401 * @page - buffer to write the data in 2402 * @start - where the actual data has been written in page 2403 * @offset - same meaning as the read system call 2404 * @count - same meaning as the read system call 2405 * @eof - set if no more data needs to be returned 2406 * @data - pointer to our soft state 2407 * 2408 * Display current rebuild rate 2409 */ 2410 static int 2411 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof, 2412 void *data) 2413 { 2414 adapter_t *adapter = (adapter_t *)data; 2415 dma_addr_t dma_handle; 2416 caddr_t inquiry; 2417 struct pci_dev *pdev; 2418 int len = 0; 2419 2420 if( make_local_pdev(adapter, &pdev) != 0 ) { 2421 *eof = 1; 2422 return len; 2423 } 2424 2425 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2426 free_local_pdev(pdev); 2427 *eof = 1; 2428 return len; 2429 } 2430 2431 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2432 2433 len = sprintf(page, "Adapter inquiry failed.\n"); 2434 2435 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2436 2437 mega_free_inquiry(inquiry, dma_handle, pdev); 2438 2439 free_local_pdev(pdev); 2440 2441 *eof = 1; 2442 2443 return len; 2444 } 2445 2446 if( adapter->flag & BOARD_40LD ) { 2447 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2448 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2449 } 2450 else { 2451 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2452 ((mraid_ext_inquiry *) 2453 inquiry)->raid_inq.adapter_info.rebuild_rate); 2454 } 2455 2456 2457 mega_free_inquiry(inquiry, dma_handle, pdev); 2458 2459 free_local_pdev(pdev); 2460 2461 *eof = 1; 2462 2463 return len; 2464 } 2465 2466 2467 /** 2468 * proc_battery() 2469 * @page - buffer to write the data in 2470 * @start - where the actual data has been written in page 2471 * @offset - same meaning as the read system call 2472 * @count - same meaning as the read system call 2473 * @eof - set if no more data needs to be returned 2474 * @data - pointer to our soft state 2475 * 2476 * Display information about the battery module on the controller. 2477 */ 2478 static int 2479 proc_battery(char *page, char **start, off_t offset, int count, int *eof, 2480 void *data) 2481 { 2482 adapter_t *adapter = (adapter_t *)data; 2483 dma_addr_t dma_handle; 2484 caddr_t inquiry; 2485 struct pci_dev *pdev; 2486 u8 battery_status = 0; 2487 char str[256]; 2488 int len = 0; 2489 2490 if( make_local_pdev(adapter, &pdev) != 0 ) { 2491 *eof = 1; 2492 return len; 2493 } 2494 2495 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2496 free_local_pdev(pdev); 2497 *eof = 1; 2498 return len; 2499 } 2500 2501 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2502 2503 len = sprintf(page, "Adapter inquiry failed.\n"); 2504 2505 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2506 2507 mega_free_inquiry(inquiry, dma_handle, pdev); 2508 2509 free_local_pdev(pdev); 2510 2511 *eof = 1; 2512 2513 return len; 2514 } 2515 2516 if( adapter->flag & BOARD_40LD ) { 2517 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2518 } 2519 else { 2520 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2521 raid_inq.adapter_info.battery_status; 2522 } 2523 2524 /* 2525 * Decode the battery status 2526 */ 2527 sprintf(str, "Battery Status:[%d]", battery_status); 2528 2529 if(battery_status == MEGA_BATT_CHARGE_DONE) 2530 strcat(str, " Charge Done"); 2531 2532 if(battery_status & MEGA_BATT_MODULE_MISSING) 2533 strcat(str, " Module Missing"); 2534 2535 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2536 strcat(str, " Low Voltage"); 2537 2538 if(battery_status & MEGA_BATT_TEMP_HIGH) 2539 strcat(str, " Temperature High"); 2540 2541 if(battery_status & MEGA_BATT_PACK_MISSING) 2542 strcat(str, " Pack Missing"); 2543 2544 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2545 strcat(str, " Charge In-progress"); 2546 2547 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2548 strcat(str, " Charge Fail"); 2549 2550 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2551 strcat(str, " Cycles Exceeded"); 2552 2553 len = sprintf(page, "%s\n", str); 2554 2555 2556 mega_free_inquiry(inquiry, dma_handle, pdev); 2557 2558 free_local_pdev(pdev); 2559 2560 *eof = 1; 2561 2562 return len; 2563 } 2564 2565 2566 /** 2567 * proc_pdrv_ch0() 2568 * @page - buffer to write the data in 2569 * @start - where the actual data has been written in page 2570 * @offset - same meaning as the read system call 2571 * @count - same meaning as the read system call 2572 * @eof - set if no more data needs to be returned 2573 * @data - pointer to our soft state 2574 * 2575 * Display information about the physical drives on physical channel 0. 2576 */ 2577 static int 2578 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof, 2579 void *data) 2580 { 2581 adapter_t *adapter = (adapter_t *)data; 2582 2583 *eof = 1; 2584 2585 return (proc_pdrv(adapter, page, 0)); 2586 } 2587 2588 2589 /** 2590 * proc_pdrv_ch1() 2591 * @page - buffer to write the data in 2592 * @start - where the actual data has been written in page 2593 * @offset - same meaning as the read system call 2594 * @count - same meaning as the read system call 2595 * @eof - set if no more data needs to be returned 2596 * @data - pointer to our soft state 2597 * 2598 * Display information about the physical drives on physical channel 1. 2599 */ 2600 static int 2601 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof, 2602 void *data) 2603 { 2604 adapter_t *adapter = (adapter_t *)data; 2605 2606 *eof = 1; 2607 2608 return (proc_pdrv(adapter, page, 1)); 2609 } 2610 2611 2612 /** 2613 * proc_pdrv_ch2() 2614 * @page - buffer to write the data in 2615 * @start - where the actual data has been written in page 2616 * @offset - same meaning as the read system call 2617 * @count - same meaning as the read system call 2618 * @eof - set if no more data needs to be returned 2619 * @data - pointer to our soft state 2620 * 2621 * Display information about the physical drives on physical channel 2. 2622 */ 2623 static int 2624 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof, 2625 void *data) 2626 { 2627 adapter_t *adapter = (adapter_t *)data; 2628 2629 *eof = 1; 2630 2631 return (proc_pdrv(adapter, page, 2)); 2632 } 2633 2634 2635 /** 2636 * proc_pdrv_ch3() 2637 * @page - buffer to write the data in 2638 * @start - where the actual data has been written in page 2639 * @offset - same meaning as the read system call 2640 * @count - same meaning as the read system call 2641 * @eof - set if no more data needs to be returned 2642 * @data - pointer to our soft state 2643 * 2644 * Display information about the physical drives on physical channel 3. 2645 */ 2646 static int 2647 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof, 2648 void *data) 2649 { 2650 adapter_t *adapter = (adapter_t *)data; 2651 2652 *eof = 1; 2653 2654 return (proc_pdrv(adapter, page, 3)); 2655 } 2656 2657 2658 /** 2659 * proc_pdrv() 2660 * @page - buffer to write the data in 2661 * @adapter - pointer to our soft state 2662 * 2663 * Display information about the physical drives. 2664 */ 2665 static int 2666 proc_pdrv(adapter_t *adapter, char *page, int channel) 2667 { 2668 dma_addr_t dma_handle; 2669 char *scsi_inq; 2670 dma_addr_t scsi_inq_dma_handle; 2671 caddr_t inquiry; 2672 struct pci_dev *pdev; 2673 u8 *pdrv_state; 2674 u8 state; 2675 int tgt; 2676 int max_channels; 2677 int len = 0; 2678 char str[80]; 2679 int i; 2680 2681 if( make_local_pdev(adapter, &pdev) != 0 ) { 2682 return len; 2683 } 2684 2685 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2686 goto free_pdev; 2687 } 2688 2689 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2690 len = sprintf(page, "Adapter inquiry failed.\n"); 2691 2692 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2693 2694 goto free_inquiry; 2695 } 2696 2697 2698 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2699 2700 if( scsi_inq == NULL ) { 2701 len = sprintf(page, "memory not available for scsi inq.\n"); 2702 2703 goto free_inquiry; 2704 } 2705 2706 if( adapter->flag & BOARD_40LD ) { 2707 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2708 } 2709 else { 2710 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2711 raid_inq.pdrv_info.pdrv_state; 2712 } 2713 2714 max_channels = adapter->product_info.nchannels; 2715 2716 if( channel >= max_channels ) { 2717 goto free_pci; 2718 } 2719 2720 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2721 2722 i = channel*16 + tgt; 2723 2724 state = *(pdrv_state + i); 2725 2726 switch( state & 0x0F ) { 2727 2728 case PDRV_ONLINE: 2729 sprintf(str, 2730 "Channel:%2d Id:%2d State: Online", 2731 channel, tgt); 2732 break; 2733 2734 case PDRV_FAILED: 2735 sprintf(str, 2736 "Channel:%2d Id:%2d State: Failed", 2737 channel, tgt); 2738 break; 2739 2740 case PDRV_RBLD: 2741 sprintf(str, 2742 "Channel:%2d Id:%2d State: Rebuild", 2743 channel, tgt); 2744 break; 2745 2746 case PDRV_HOTSPARE: 2747 sprintf(str, 2748 "Channel:%2d Id:%2d State: Hot spare", 2749 channel, tgt); 2750 break; 2751 2752 default: 2753 sprintf(str, 2754 "Channel:%2d Id:%2d State: Un-configured", 2755 channel, tgt); 2756 break; 2757 2758 } 2759 2760 /* 2761 * This interface displays inquiries for disk drives 2762 * only. Inquries for logical drives and non-disk 2763 * devices are available through /proc/scsi/scsi 2764 */ 2765 memset(scsi_inq, 0, 256); 2766 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2767 scsi_inq_dma_handle) || 2768 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2769 continue; 2770 } 2771 2772 /* 2773 * Check for overflow. We print less than 240 2774 * characters for inquiry 2775 */ 2776 if( (len + 240) >= PAGE_SIZE ) break; 2777 2778 len += sprintf(page+len, "%s.\n", str); 2779 2780 len += mega_print_inquiry(page+len, scsi_inq); 2781 } 2782 2783 free_pci: 2784 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2785 free_inquiry: 2786 mega_free_inquiry(inquiry, dma_handle, pdev); 2787 free_pdev: 2788 free_local_pdev(pdev); 2789 2790 return len; 2791 } 2792 2793 2794 /* 2795 * Display scsi inquiry 2796 */ 2797 static int 2798 mega_print_inquiry(char *page, char *scsi_inq) 2799 { 2800 int len = 0; 2801 int i; 2802 2803 len = sprintf(page, " Vendor: "); 2804 for( i = 8; i < 16; i++ ) { 2805 len += sprintf(page+len, "%c", scsi_inq[i]); 2806 } 2807 2808 len += sprintf(page+len, " Model: "); 2809 2810 for( i = 16; i < 32; i++ ) { 2811 len += sprintf(page+len, "%c", scsi_inq[i]); 2812 } 2813 2814 len += sprintf(page+len, " Rev: "); 2815 2816 for( i = 32; i < 36; i++ ) { 2817 len += sprintf(page+len, "%c", scsi_inq[i]); 2818 } 2819 2820 len += sprintf(page+len, "\n"); 2821 2822 i = scsi_inq[0] & 0x1f; 2823 2824 len += sprintf(page+len, " Type: %s ", scsi_device_type(i)); 2825 2826 len += sprintf(page+len, 2827 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07); 2828 2829 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2830 len += sprintf(page+len, " CCS\n"); 2831 else 2832 len += sprintf(page+len, "\n"); 2833 2834 return len; 2835 } 2836 2837 2838 /** 2839 * proc_rdrv_10() 2840 * @page - buffer to write the data in 2841 * @start - where the actual data has been written in page 2842 * @offset - same meaning as the read system call 2843 * @count - same meaning as the read system call 2844 * @eof - set if no more data needs to be returned 2845 * @data - pointer to our soft state 2846 * 2847 * Display real time information about the logical drives 0 through 9. 2848 */ 2849 static int 2850 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof, 2851 void *data) 2852 { 2853 adapter_t *adapter = (adapter_t *)data; 2854 2855 *eof = 1; 2856 2857 return (proc_rdrv(adapter, page, 0, 9)); 2858 } 2859 2860 2861 /** 2862 * proc_rdrv_20() 2863 * @page - buffer to write the data in 2864 * @start - where the actual data has been written in page 2865 * @offset - same meaning as the read system call 2866 * @count - same meaning as the read system call 2867 * @eof - set if no more data needs to be returned 2868 * @data - pointer to our soft state 2869 * 2870 * Display real time information about the logical drives 0 through 9. 2871 */ 2872 static int 2873 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof, 2874 void *data) 2875 { 2876 adapter_t *adapter = (adapter_t *)data; 2877 2878 *eof = 1; 2879 2880 return (proc_rdrv(adapter, page, 10, 19)); 2881 } 2882 2883 2884 /** 2885 * proc_rdrv_30() 2886 * @page - buffer to write the data in 2887 * @start - where the actual data has been written in page 2888 * @offset - same meaning as the read system call 2889 * @count - same meaning as the read system call 2890 * @eof - set if no more data needs to be returned 2891 * @data - pointer to our soft state 2892 * 2893 * Display real time information about the logical drives 0 through 9. 2894 */ 2895 static int 2896 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof, 2897 void *data) 2898 { 2899 adapter_t *adapter = (adapter_t *)data; 2900 2901 *eof = 1; 2902 2903 return (proc_rdrv(adapter, page, 20, 29)); 2904 } 2905 2906 2907 /** 2908 * proc_rdrv_40() 2909 * @page - buffer to write the data in 2910 * @start - where the actual data has been written in page 2911 * @offset - same meaning as the read system call 2912 * @count - same meaning as the read system call 2913 * @eof - set if no more data needs to be returned 2914 * @data - pointer to our soft state 2915 * 2916 * Display real time information about the logical drives 0 through 9. 2917 */ 2918 static int 2919 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof, 2920 void *data) 2921 { 2922 adapter_t *adapter = (adapter_t *)data; 2923 2924 *eof = 1; 2925 2926 return (proc_rdrv(adapter, page, 30, 39)); 2927 } 2928 2929 2930 /** 2931 * proc_rdrv() 2932 * @page - buffer to write the data in 2933 * @adapter - pointer to our soft state 2934 * @start - starting logical drive to display 2935 * @end - ending logical drive to display 2936 * 2937 * We do not print the inquiry information since its already available through 2938 * /proc/scsi/scsi interface 2939 */ 2940 static int 2941 proc_rdrv(adapter_t *adapter, char *page, int start, int end ) 2942 { 2943 dma_addr_t dma_handle; 2944 logdrv_param *lparam; 2945 megacmd_t mc; 2946 char *disk_array; 2947 dma_addr_t disk_array_dma_handle; 2948 caddr_t inquiry; 2949 struct pci_dev *pdev; 2950 u8 *rdrv_state; 2951 int num_ldrv; 2952 u32 array_sz; 2953 int len = 0; 2954 int i; 2955 2956 if( make_local_pdev(adapter, &pdev) != 0 ) { 2957 return len; 2958 } 2959 2960 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2961 free_local_pdev(pdev); 2962 return len; 2963 } 2964 2965 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2966 2967 len = sprintf(page, "Adapter inquiry failed.\n"); 2968 2969 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2970 2971 mega_free_inquiry(inquiry, dma_handle, pdev); 2972 2973 free_local_pdev(pdev); 2974 2975 return len; 2976 } 2977 2978 memset(&mc, 0, sizeof(megacmd_t)); 2979 2980 if( adapter->flag & BOARD_40LD ) { 2981 array_sz = sizeof(disk_array_40ld); 2982 2983 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2984 2985 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2986 } 2987 else { 2988 array_sz = sizeof(disk_array_8ld); 2989 2990 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2991 raid_inq.logdrv_info.ldrv_state; 2992 2993 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2994 raid_inq.logdrv_info.num_ldrv; 2995 } 2996 2997 disk_array = pci_alloc_consistent(pdev, array_sz, 2998 &disk_array_dma_handle); 2999 3000 if( disk_array == NULL ) { 3001 len = sprintf(page, "memory not available.\n"); 3002 3003 mega_free_inquiry(inquiry, dma_handle, pdev); 3004 3005 free_local_pdev(pdev); 3006 3007 return len; 3008 } 3009 3010 mc.xferaddr = (u32)disk_array_dma_handle; 3011 3012 if( adapter->flag & BOARD_40LD ) { 3013 mc.cmd = FC_NEW_CONFIG; 3014 mc.opcode = OP_DCMD_READ_CONFIG; 3015 3016 if( mega_internal_command(adapter, &mc, NULL) ) { 3017 3018 len = sprintf(page, "40LD read config failed.\n"); 3019 3020 mega_free_inquiry(inquiry, dma_handle, pdev); 3021 3022 pci_free_consistent(pdev, array_sz, disk_array, 3023 disk_array_dma_handle); 3024 3025 free_local_pdev(pdev); 3026 3027 return len; 3028 } 3029 3030 } 3031 else { 3032 mc.cmd = NEW_READ_CONFIG_8LD; 3033 3034 if( mega_internal_command(adapter, &mc, NULL) ) { 3035 3036 mc.cmd = READ_CONFIG_8LD; 3037 3038 if( mega_internal_command(adapter, &mc, 3039 NULL) ){ 3040 3041 len = sprintf(page, 3042 "8LD read config failed.\n"); 3043 3044 mega_free_inquiry(inquiry, dma_handle, pdev); 3045 3046 pci_free_consistent(pdev, array_sz, 3047 disk_array, 3048 disk_array_dma_handle); 3049 3050 free_local_pdev(pdev); 3051 3052 return len; 3053 } 3054 } 3055 } 3056 3057 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 3058 3059 if( adapter->flag & BOARD_40LD ) { 3060 lparam = 3061 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 3062 } 3063 else { 3064 lparam = 3065 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 3066 } 3067 3068 /* 3069 * Check for overflow. We print less than 240 characters for 3070 * information about each logical drive. 3071 */ 3072 if( (len + 240) >= PAGE_SIZE ) break; 3073 3074 len += sprintf(page+len, "Logical drive:%2d:, ", i); 3075 3076 switch( rdrv_state[i] & 0x0F ) { 3077 case RDRV_OFFLINE: 3078 len += sprintf(page+len, "state: offline"); 3079 break; 3080 3081 case RDRV_DEGRADED: 3082 len += sprintf(page+len, "state: degraded"); 3083 break; 3084 3085 case RDRV_OPTIMAL: 3086 len += sprintf(page+len, "state: optimal"); 3087 break; 3088 3089 case RDRV_DELETED: 3090 len += sprintf(page+len, "state: deleted"); 3091 break; 3092 3093 default: 3094 len += sprintf(page+len, "state: unknown"); 3095 break; 3096 } 3097 3098 /* 3099 * Check if check consistency or initialization is going on 3100 * for this logical drive. 3101 */ 3102 if( (rdrv_state[i] & 0xF0) == 0x20 ) { 3103 len += sprintf(page+len, 3104 ", check-consistency in progress"); 3105 } 3106 else if( (rdrv_state[i] & 0xF0) == 0x10 ) { 3107 len += sprintf(page+len, 3108 ", initialization in progress"); 3109 } 3110 3111 len += sprintf(page+len, "\n"); 3112 3113 len += sprintf(page+len, "Span depth:%3d, ", 3114 lparam->span_depth); 3115 3116 len += sprintf(page+len, "RAID level:%3d, ", 3117 lparam->level); 3118 3119 len += sprintf(page+len, "Stripe size:%3d, ", 3120 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 3121 3122 len += sprintf(page+len, "Row size:%3d\n", 3123 lparam->row_size); 3124 3125 3126 len += sprintf(page+len, "Read Policy: "); 3127 3128 switch(lparam->read_ahead) { 3129 3130 case NO_READ_AHEAD: 3131 len += sprintf(page+len, "No read ahead, "); 3132 break; 3133 3134 case READ_AHEAD: 3135 len += sprintf(page+len, "Read ahead, "); 3136 break; 3137 3138 case ADAP_READ_AHEAD: 3139 len += sprintf(page+len, "Adaptive, "); 3140 break; 3141 3142 } 3143 3144 len += sprintf(page+len, "Write Policy: "); 3145 3146 switch(lparam->write_mode) { 3147 3148 case WRMODE_WRITE_THRU: 3149 len += sprintf(page+len, "Write thru, "); 3150 break; 3151 3152 case WRMODE_WRITE_BACK: 3153 len += sprintf(page+len, "Write back, "); 3154 break; 3155 } 3156 3157 len += sprintf(page+len, "Cache Policy: "); 3158 3159 switch(lparam->direct_io) { 3160 3161 case CACHED_IO: 3162 len += sprintf(page+len, "Cached IO\n\n"); 3163 break; 3164 3165 case DIRECT_IO: 3166 len += sprintf(page+len, "Direct IO\n\n"); 3167 break; 3168 } 3169 } 3170 3171 mega_free_inquiry(inquiry, dma_handle, pdev); 3172 3173 pci_free_consistent(pdev, array_sz, disk_array, 3174 disk_array_dma_handle); 3175 3176 free_local_pdev(pdev); 3177 3178 return len; 3179 } 3180 3181 #endif 3182 3183 3184 /** 3185 * megaraid_biosparam() 3186 * 3187 * Return the disk geometry for a particular disk 3188 */ 3189 static int 3190 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 3191 sector_t capacity, int geom[]) 3192 { 3193 adapter_t *adapter; 3194 unsigned char *bh; 3195 int heads; 3196 int sectors; 3197 int cylinders; 3198 int rval; 3199 3200 /* Get pointer to host config structure */ 3201 adapter = (adapter_t *)sdev->host->hostdata; 3202 3203 if (IS_RAID_CH(adapter, sdev->channel)) { 3204 /* Default heads (64) & sectors (32) */ 3205 heads = 64; 3206 sectors = 32; 3207 cylinders = (ulong)capacity / (heads * sectors); 3208 3209 /* 3210 * Handle extended translation size for logical drives 3211 * > 1Gb 3212 */ 3213 if ((ulong)capacity >= 0x200000) { 3214 heads = 255; 3215 sectors = 63; 3216 cylinders = (ulong)capacity / (heads * sectors); 3217 } 3218 3219 /* return result */ 3220 geom[0] = heads; 3221 geom[1] = sectors; 3222 geom[2] = cylinders; 3223 } 3224 else { 3225 bh = scsi_bios_ptable(bdev); 3226 3227 if( bh ) { 3228 rval = scsi_partsize(bh, capacity, 3229 &geom[2], &geom[0], &geom[1]); 3230 kfree(bh); 3231 if( rval != -1 ) 3232 return rval; 3233 } 3234 3235 printk(KERN_INFO 3236 "megaraid: invalid partition on this disk on channel %d\n", 3237 sdev->channel); 3238 3239 /* Default heads (64) & sectors (32) */ 3240 heads = 64; 3241 sectors = 32; 3242 cylinders = (ulong)capacity / (heads * sectors); 3243 3244 /* Handle extended translation size for logical drives > 1Gb */ 3245 if ((ulong)capacity >= 0x200000) { 3246 heads = 255; 3247 sectors = 63; 3248 cylinders = (ulong)capacity / (heads * sectors); 3249 } 3250 3251 /* return result */ 3252 geom[0] = heads; 3253 geom[1] = sectors; 3254 geom[2] = cylinders; 3255 } 3256 3257 return 0; 3258 } 3259 3260 /** 3261 * mega_init_scb() 3262 * @adapter - pointer to our soft state 3263 * 3264 * Allocate memory for the various pointers in the scb structures: 3265 * scatter-gather list pointer, passthru and extended passthru structure 3266 * pointers. 3267 */ 3268 static int 3269 mega_init_scb(adapter_t *adapter) 3270 { 3271 scb_t *scb; 3272 int i; 3273 3274 for( i = 0; i < adapter->max_cmds; i++ ) { 3275 3276 scb = &adapter->scb_list[i]; 3277 3278 scb->sgl64 = NULL; 3279 scb->sgl = NULL; 3280 scb->pthru = NULL; 3281 scb->epthru = NULL; 3282 } 3283 3284 for( i = 0; i < adapter->max_cmds; i++ ) { 3285 3286 scb = &adapter->scb_list[i]; 3287 3288 scb->idx = i; 3289 3290 scb->sgl64 = pci_alloc_consistent(adapter->dev, 3291 sizeof(mega_sgl64) * adapter->sglen, 3292 &scb->sgl_dma_addr); 3293 3294 scb->sgl = (mega_sglist *)scb->sgl64; 3295 3296 if( !scb->sgl ) { 3297 printk(KERN_WARNING "RAID: Can't allocate sglist.\n"); 3298 mega_free_sgl(adapter); 3299 return -1; 3300 } 3301 3302 scb->pthru = pci_alloc_consistent(adapter->dev, 3303 sizeof(mega_passthru), 3304 &scb->pthru_dma_addr); 3305 3306 if( !scb->pthru ) { 3307 printk(KERN_WARNING "RAID: Can't allocate passthru.\n"); 3308 mega_free_sgl(adapter); 3309 return -1; 3310 } 3311 3312 scb->epthru = pci_alloc_consistent(adapter->dev, 3313 sizeof(mega_ext_passthru), 3314 &scb->epthru_dma_addr); 3315 3316 if( !scb->epthru ) { 3317 printk(KERN_WARNING 3318 "Can't allocate extended passthru.\n"); 3319 mega_free_sgl(adapter); 3320 return -1; 3321 } 3322 3323 3324 scb->dma_type = MEGA_DMA_TYPE_NONE; 3325 3326 /* 3327 * Link to free list 3328 * lock not required since we are loading the driver, so no 3329 * commands possible right now. 3330 */ 3331 scb->state = SCB_FREE; 3332 scb->cmd = NULL; 3333 list_add(&scb->list, &adapter->free_list); 3334 } 3335 3336 return 0; 3337 } 3338 3339 3340 /** 3341 * megadev_open() 3342 * @inode - unused 3343 * @filep - unused 3344 * 3345 * Routines for the character/ioctl interface to the driver. Find out if this 3346 * is a valid open. If yes, increment the module use count so that it cannot 3347 * be unloaded. 3348 */ 3349 static int 3350 megadev_open (struct inode *inode, struct file *filep) 3351 { 3352 /* 3353 * Only allow superuser to access private ioctl interface 3354 */ 3355 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 3356 3357 return 0; 3358 } 3359 3360 3361 /** 3362 * megadev_ioctl() 3363 * @inode - Our device inode 3364 * @filep - unused 3365 * @cmd - ioctl command 3366 * @arg - user buffer 3367 * 3368 * ioctl entry point for our private ioctl interface. We move the data in from 3369 * the user space, prepare the command (if necessary, convert the old MIMD 3370 * ioctl to new ioctl command), and issue a synchronous command to the 3371 * controller. 3372 */ 3373 static int 3374 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, 3375 unsigned long arg) 3376 { 3377 adapter_t *adapter; 3378 nitioctl_t uioc; 3379 int adapno; 3380 int rval; 3381 mega_passthru __user *upthru; /* user address for passthru */ 3382 mega_passthru *pthru; /* copy user passthru here */ 3383 dma_addr_t pthru_dma_hndl; 3384 void *data = NULL; /* data to be transferred */ 3385 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 3386 megacmd_t mc; 3387 megastat_t __user *ustats; 3388 int num_ldrv; 3389 u32 uxferaddr = 0; 3390 struct pci_dev *pdev; 3391 3392 ustats = NULL; /* avoid compilation warnings */ 3393 num_ldrv = 0; 3394 3395 /* 3396 * Make sure only USCSICMD are issued through this interface. 3397 * MIMD application would still fire different command. 3398 */ 3399 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 3400 return -EINVAL; 3401 } 3402 3403 /* 3404 * Check and convert a possible MIMD command to NIT command. 3405 * mega_m_to_n() copies the data from the user space, so we do not 3406 * have to do it here. 3407 * NOTE: We will need some user address to copyout the data, therefore 3408 * the inteface layer will also provide us with the required user 3409 * addresses. 3410 */ 3411 memset(&uioc, 0, sizeof(nitioctl_t)); 3412 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3413 return rval; 3414 3415 3416 switch( uioc.opcode ) { 3417 3418 case GET_DRIVER_VER: 3419 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3420 return (-EFAULT); 3421 3422 break; 3423 3424 case GET_N_ADAP: 3425 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3426 return (-EFAULT); 3427 3428 /* 3429 * Shucks. MIMD interface returns a positive value for number 3430 * of adapters. TODO: Change it to return 0 when there is no 3431 * applicatio using mimd interface. 3432 */ 3433 return hba_count; 3434 3435 case GET_ADAP_INFO: 3436 3437 /* 3438 * Which adapter 3439 */ 3440 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3441 return (-ENODEV); 3442 3443 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3444 sizeof(struct mcontroller)) ) 3445 return (-EFAULT); 3446 break; 3447 3448 #if MEGA_HAVE_STATS 3449 3450 case GET_STATS: 3451 /* 3452 * Which adapter 3453 */ 3454 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3455 return (-ENODEV); 3456 3457 adapter = hba_soft_state[adapno]; 3458 3459 ustats = uioc.uioc_uaddr; 3460 3461 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3462 return (-EFAULT); 3463 3464 /* 3465 * Check for the validity of the logical drive number 3466 */ 3467 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3468 3469 if( copy_to_user(ustats->nreads, adapter->nreads, 3470 num_ldrv*sizeof(u32)) ) 3471 return -EFAULT; 3472 3473 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3474 num_ldrv*sizeof(u32)) ) 3475 return -EFAULT; 3476 3477 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3478 num_ldrv*sizeof(u32)) ) 3479 return -EFAULT; 3480 3481 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3482 num_ldrv*sizeof(u32)) ) 3483 return -EFAULT; 3484 3485 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3486 num_ldrv*sizeof(u32)) ) 3487 return -EFAULT; 3488 3489 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3490 num_ldrv*sizeof(u32)) ) 3491 return -EFAULT; 3492 3493 return 0; 3494 3495 #endif 3496 case MBOX_CMD: 3497 3498 /* 3499 * Which adapter 3500 */ 3501 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3502 return (-ENODEV); 3503 3504 adapter = hba_soft_state[adapno]; 3505 3506 /* 3507 * Deletion of logical drive is a special case. The adapter 3508 * should be quiescent before this command is issued. 3509 */ 3510 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3511 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3512 3513 /* 3514 * Do we support this feature 3515 */ 3516 if( !adapter->support_random_del ) { 3517 printk(KERN_WARNING "megaraid: logdrv "); 3518 printk("delete on non-supporting F/W.\n"); 3519 3520 return (-EINVAL); 3521 } 3522 3523 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3524 3525 if( rval == 0 ) { 3526 memset(&mc, 0, sizeof(megacmd_t)); 3527 3528 mc.status = rval; 3529 3530 rval = mega_n_to_m((void __user *)arg, &mc); 3531 } 3532 3533 return rval; 3534 } 3535 /* 3536 * This interface only support the regular passthru commands. 3537 * Reject extended passthru and 64-bit passthru 3538 */ 3539 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3540 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3541 3542 printk(KERN_WARNING "megaraid: rejected passthru.\n"); 3543 3544 return (-EINVAL); 3545 } 3546 3547 /* 3548 * For all internal commands, the buffer must be allocated in 3549 * <4GB address range 3550 */ 3551 if( make_local_pdev(adapter, &pdev) != 0 ) 3552 return -EIO; 3553 3554 /* Is it a passthru command or a DCMD */ 3555 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3556 /* Passthru commands */ 3557 3558 pthru = pci_alloc_consistent(pdev, 3559 sizeof(mega_passthru), 3560 &pthru_dma_hndl); 3561 3562 if( pthru == NULL ) { 3563 free_local_pdev(pdev); 3564 return (-ENOMEM); 3565 } 3566 3567 /* 3568 * The user passthru structure 3569 */ 3570 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr; 3571 3572 /* 3573 * Copy in the user passthru here. 3574 */ 3575 if( copy_from_user(pthru, upthru, 3576 sizeof(mega_passthru)) ) { 3577 3578 pci_free_consistent(pdev, 3579 sizeof(mega_passthru), pthru, 3580 pthru_dma_hndl); 3581 3582 free_local_pdev(pdev); 3583 3584 return (-EFAULT); 3585 } 3586 3587 /* 3588 * Is there a data transfer 3589 */ 3590 if( pthru->dataxferlen ) { 3591 data = pci_alloc_consistent(pdev, 3592 pthru->dataxferlen, 3593 &data_dma_hndl); 3594 3595 if( data == NULL ) { 3596 pci_free_consistent(pdev, 3597 sizeof(mega_passthru), 3598 pthru, 3599 pthru_dma_hndl); 3600 3601 free_local_pdev(pdev); 3602 3603 return (-ENOMEM); 3604 } 3605 3606 /* 3607 * Save the user address and point the kernel 3608 * address at just allocated memory 3609 */ 3610 uxferaddr = pthru->dataxferaddr; 3611 pthru->dataxferaddr = data_dma_hndl; 3612 } 3613 3614 3615 /* 3616 * Is data coming down-stream 3617 */ 3618 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3619 /* 3620 * Get the user data 3621 */ 3622 if( copy_from_user(data, (char __user *)uxferaddr, 3623 pthru->dataxferlen) ) { 3624 rval = (-EFAULT); 3625 goto freemem_and_return; 3626 } 3627 } 3628 3629 memset(&mc, 0, sizeof(megacmd_t)); 3630 3631 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3632 mc.xferaddr = (u32)pthru_dma_hndl; 3633 3634 /* 3635 * Issue the command 3636 */ 3637 mega_internal_command(adapter, &mc, pthru); 3638 3639 rval = mega_n_to_m((void __user *)arg, &mc); 3640 3641 if( rval ) goto freemem_and_return; 3642 3643 3644 /* 3645 * Is data going up-stream 3646 */ 3647 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3648 if( copy_to_user((char __user *)uxferaddr, data, 3649 pthru->dataxferlen) ) { 3650 rval = (-EFAULT); 3651 } 3652 } 3653 3654 /* 3655 * Send the request sense data also, irrespective of 3656 * whether the user has asked for it or not. 3657 */ 3658 if (copy_to_user(upthru->reqsensearea, 3659 pthru->reqsensearea, 14)) 3660 rval = -EFAULT; 3661 3662 freemem_and_return: 3663 if( pthru->dataxferlen ) { 3664 pci_free_consistent(pdev, 3665 pthru->dataxferlen, data, 3666 data_dma_hndl); 3667 } 3668 3669 pci_free_consistent(pdev, sizeof(mega_passthru), 3670 pthru, pthru_dma_hndl); 3671 3672 free_local_pdev(pdev); 3673 3674 return rval; 3675 } 3676 else { 3677 /* DCMD commands */ 3678 3679 /* 3680 * Is there a data transfer 3681 */ 3682 if( uioc.xferlen ) { 3683 data = pci_alloc_consistent(pdev, 3684 uioc.xferlen, &data_dma_hndl); 3685 3686 if( data == NULL ) { 3687 free_local_pdev(pdev); 3688 return (-ENOMEM); 3689 } 3690 3691 uxferaddr = MBOX(uioc)->xferaddr; 3692 } 3693 3694 /* 3695 * Is data coming down-stream 3696 */ 3697 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3698 /* 3699 * Get the user data 3700 */ 3701 if( copy_from_user(data, (char __user *)uxferaddr, 3702 uioc.xferlen) ) { 3703 3704 pci_free_consistent(pdev, 3705 uioc.xferlen, 3706 data, data_dma_hndl); 3707 3708 free_local_pdev(pdev); 3709 3710 return (-EFAULT); 3711 } 3712 } 3713 3714 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3715 3716 mc.xferaddr = (u32)data_dma_hndl; 3717 3718 /* 3719 * Issue the command 3720 */ 3721 mega_internal_command(adapter, &mc, NULL); 3722 3723 rval = mega_n_to_m((void __user *)arg, &mc); 3724 3725 if( rval ) { 3726 if( uioc.xferlen ) { 3727 pci_free_consistent(pdev, 3728 uioc.xferlen, data, 3729 data_dma_hndl); 3730 } 3731 3732 free_local_pdev(pdev); 3733 3734 return rval; 3735 } 3736 3737 /* 3738 * Is data going up-stream 3739 */ 3740 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3741 if( copy_to_user((char __user *)uxferaddr, data, 3742 uioc.xferlen) ) { 3743 3744 rval = (-EFAULT); 3745 } 3746 } 3747 3748 if( uioc.xferlen ) { 3749 pci_free_consistent(pdev, 3750 uioc.xferlen, data, 3751 data_dma_hndl); 3752 } 3753 3754 free_local_pdev(pdev); 3755 3756 return rval; 3757 } 3758 3759 default: 3760 return (-EINVAL); 3761 } 3762 3763 return 0; 3764 } 3765 3766 /** 3767 * mega_m_to_n() 3768 * @arg - user address 3769 * @uioc - new ioctl structure 3770 * 3771 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3772 * structure 3773 * 3774 * Converts the older mimd ioctl structure to newer NIT structure 3775 */ 3776 static int 3777 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3778 { 3779 struct uioctl_t uioc_mimd; 3780 char signature[8] = {0}; 3781 u8 opcode; 3782 u8 subopcode; 3783 3784 3785 /* 3786 * check is the application conforms to NIT. We do not have to do much 3787 * in that case. 3788 * We exploit the fact that the signature is stored in the very 3789 * begining of the structure. 3790 */ 3791 3792 if( copy_from_user(signature, arg, 7) ) 3793 return (-EFAULT); 3794 3795 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3796 3797 /* 3798 * NOTE NOTE: The nit ioctl is still under flux because of 3799 * change of mailbox definition, in HPE. No applications yet 3800 * use this interface and let's not have applications use this 3801 * interface till the new specifitions are in place. 3802 */ 3803 return -EINVAL; 3804 #if 0 3805 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3806 return (-EFAULT); 3807 return 0; 3808 #endif 3809 } 3810 3811 /* 3812 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3813 * 3814 * Get the user ioctl structure 3815 */ 3816 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3817 return (-EFAULT); 3818 3819 3820 /* 3821 * Get the opcode and subopcode for the commands 3822 */ 3823 opcode = uioc_mimd.ui.fcs.opcode; 3824 subopcode = uioc_mimd.ui.fcs.subopcode; 3825 3826 switch (opcode) { 3827 case 0x82: 3828 3829 switch (subopcode) { 3830 3831 case MEGAIOC_QDRVRVER: /* Query driver version */ 3832 uioc->opcode = GET_DRIVER_VER; 3833 uioc->uioc_uaddr = uioc_mimd.data; 3834 break; 3835 3836 case MEGAIOC_QNADAP: /* Get # of adapters */ 3837 uioc->opcode = GET_N_ADAP; 3838 uioc->uioc_uaddr = uioc_mimd.data; 3839 break; 3840 3841 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3842 uioc->opcode = GET_ADAP_INFO; 3843 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3844 uioc->uioc_uaddr = uioc_mimd.data; 3845 break; 3846 3847 default: 3848 return(-EINVAL); 3849 } 3850 3851 break; 3852 3853 3854 case 0x81: 3855 3856 uioc->opcode = MBOX_CMD; 3857 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3858 3859 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3860 3861 uioc->xferlen = uioc_mimd.ui.fcs.length; 3862 3863 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3864 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3865 3866 break; 3867 3868 case 0x80: 3869 3870 uioc->opcode = MBOX_CMD; 3871 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3872 3873 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3874 3875 /* 3876 * Choose the xferlen bigger of input and output data 3877 */ 3878 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3879 uioc_mimd.outlen : uioc_mimd.inlen; 3880 3881 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3882 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3883 3884 break; 3885 3886 default: 3887 return (-EINVAL); 3888 3889 } 3890 3891 return 0; 3892 } 3893 3894 /* 3895 * mega_n_to_m() 3896 * @arg - user address 3897 * @mc - mailbox command 3898 * 3899 * Updates the status information to the application, depending on application 3900 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3901 */ 3902 static int 3903 mega_n_to_m(void __user *arg, megacmd_t *mc) 3904 { 3905 nitioctl_t __user *uiocp; 3906 megacmd_t __user *umc; 3907 mega_passthru __user *upthru; 3908 struct uioctl_t __user *uioc_mimd; 3909 char signature[8] = {0}; 3910 3911 /* 3912 * check is the application conforms to NIT. 3913 */ 3914 if( copy_from_user(signature, arg, 7) ) 3915 return -EFAULT; 3916 3917 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3918 3919 uiocp = arg; 3920 3921 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3922 return (-EFAULT); 3923 3924 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3925 3926 umc = MBOX_P(uiocp); 3927 3928 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3929 return -EFAULT; 3930 3931 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3932 return (-EFAULT); 3933 } 3934 } 3935 else { 3936 uioc_mimd = arg; 3937 3938 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3939 return (-EFAULT); 3940 3941 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3942 3943 umc = (megacmd_t __user *)uioc_mimd->mbox; 3944 3945 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3946 return (-EFAULT); 3947 3948 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3949 return (-EFAULT); 3950 } 3951 } 3952 3953 return 0; 3954 } 3955 3956 3957 /* 3958 * MEGARAID 'FW' commands. 3959 */ 3960 3961 /** 3962 * mega_is_bios_enabled() 3963 * @adapter - pointer to our soft state 3964 * 3965 * issue command to find out if the BIOS is enabled for this controller 3966 */ 3967 static int 3968 mega_is_bios_enabled(adapter_t *adapter) 3969 { 3970 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3971 mbox_t *mbox; 3972 int ret; 3973 3974 mbox = (mbox_t *)raw_mbox; 3975 3976 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3977 3978 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3979 3980 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3981 3982 raw_mbox[0] = IS_BIOS_ENABLED; 3983 raw_mbox[2] = GET_BIOS; 3984 3985 3986 ret = issue_scb_block(adapter, raw_mbox); 3987 3988 return *(char *)adapter->mega_buffer; 3989 } 3990 3991 3992 /** 3993 * mega_enum_raid_scsi() 3994 * @adapter - pointer to our soft state 3995 * 3996 * Find out what channels are RAID/SCSI. This information is used to 3997 * differentiate the virtual channels and physical channels and to support 3998 * ROMB feature and non-disk devices. 3999 */ 4000 static void 4001 mega_enum_raid_scsi(adapter_t *adapter) 4002 { 4003 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4004 mbox_t *mbox; 4005 int i; 4006 4007 mbox = (mbox_t *)raw_mbox; 4008 4009 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4010 4011 /* 4012 * issue command to find out what channels are raid/scsi 4013 */ 4014 raw_mbox[0] = CHNL_CLASS; 4015 raw_mbox[2] = GET_CHNL_CLASS; 4016 4017 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4018 4019 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4020 4021 /* 4022 * Non-ROMB firmware fail this command, so all channels 4023 * must be shown RAID 4024 */ 4025 adapter->mega_ch_class = 0xFF; 4026 4027 if(!issue_scb_block(adapter, raw_mbox)) { 4028 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 4029 4030 } 4031 4032 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 4033 if( (adapter->mega_ch_class >> i) & 0x01 ) { 4034 printk(KERN_INFO "megaraid: channel[%d] is raid.\n", 4035 i); 4036 } 4037 else { 4038 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n", 4039 i); 4040 } 4041 } 4042 4043 return; 4044 } 4045 4046 4047 /** 4048 * mega_get_boot_drv() 4049 * @adapter - pointer to our soft state 4050 * 4051 * Find out which device is the boot device. Note, any logical drive or any 4052 * phyical device (e.g., a CDROM) can be designated as a boot device. 4053 */ 4054 static void 4055 mega_get_boot_drv(adapter_t *adapter) 4056 { 4057 struct private_bios_data *prv_bios_data; 4058 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4059 mbox_t *mbox; 4060 u16 cksum = 0; 4061 u8 *cksum_p; 4062 u8 boot_pdrv; 4063 int i; 4064 4065 mbox = (mbox_t *)raw_mbox; 4066 4067 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4068 4069 raw_mbox[0] = BIOS_PVT_DATA; 4070 raw_mbox[2] = GET_BIOS_PVT_DATA; 4071 4072 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4073 4074 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4075 4076 adapter->boot_ldrv_enabled = 0; 4077 adapter->boot_ldrv = 0; 4078 4079 adapter->boot_pdrv_enabled = 0; 4080 adapter->boot_pdrv_ch = 0; 4081 adapter->boot_pdrv_tgt = 0; 4082 4083 if(issue_scb_block(adapter, raw_mbox) == 0) { 4084 prv_bios_data = 4085 (struct private_bios_data *)adapter->mega_buffer; 4086 4087 cksum = 0; 4088 cksum_p = (char *)prv_bios_data; 4089 for (i = 0; i < 14; i++ ) { 4090 cksum += (u16)(*cksum_p++); 4091 } 4092 4093 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 4094 4095 /* 4096 * If MSB is set, a physical drive is set as boot 4097 * device 4098 */ 4099 if( prv_bios_data->boot_drv & 0x80 ) { 4100 adapter->boot_pdrv_enabled = 1; 4101 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 4102 adapter->boot_pdrv_ch = boot_pdrv / 16; 4103 adapter->boot_pdrv_tgt = boot_pdrv % 16; 4104 } 4105 else { 4106 adapter->boot_ldrv_enabled = 1; 4107 adapter->boot_ldrv = prv_bios_data->boot_drv; 4108 } 4109 } 4110 } 4111 4112 } 4113 4114 /** 4115 * mega_support_random_del() 4116 * @adapter - pointer to our soft state 4117 * 4118 * Find out if this controller supports random deletion and addition of 4119 * logical drives 4120 */ 4121 static int 4122 mega_support_random_del(adapter_t *adapter) 4123 { 4124 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4125 mbox_t *mbox; 4126 int rval; 4127 4128 mbox = (mbox_t *)raw_mbox; 4129 4130 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4131 4132 /* 4133 * issue command 4134 */ 4135 raw_mbox[0] = FC_DEL_LOGDRV; 4136 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 4137 4138 rval = issue_scb_block(adapter, raw_mbox); 4139 4140 return !rval; 4141 } 4142 4143 4144 /** 4145 * mega_support_ext_cdb() 4146 * @adapter - pointer to our soft state 4147 * 4148 * Find out if this firmware support cdblen > 10 4149 */ 4150 static int 4151 mega_support_ext_cdb(adapter_t *adapter) 4152 { 4153 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4154 mbox_t *mbox; 4155 int rval; 4156 4157 mbox = (mbox_t *)raw_mbox; 4158 4159 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4160 /* 4161 * issue command to find out if controller supports extended CDBs. 4162 */ 4163 raw_mbox[0] = 0xA4; 4164 raw_mbox[2] = 0x16; 4165 4166 rval = issue_scb_block(adapter, raw_mbox); 4167 4168 return !rval; 4169 } 4170 4171 4172 /** 4173 * mega_del_logdrv() 4174 * @adapter - pointer to our soft state 4175 * @logdrv - logical drive to be deleted 4176 * 4177 * Delete the specified logical drive. It is the responsibility of the user 4178 * app to let the OS know about this operation. 4179 */ 4180 static int 4181 mega_del_logdrv(adapter_t *adapter, int logdrv) 4182 { 4183 unsigned long flags; 4184 scb_t *scb; 4185 int rval; 4186 4187 /* 4188 * Stop sending commands to the controller, queue them internally. 4189 * When deletion is complete, ISR will flush the queue. 4190 */ 4191 atomic_set(&adapter->quiescent, 1); 4192 4193 /* 4194 * Wait till all the issued commands are complete and there are no 4195 * commands in the pending queue 4196 */ 4197 while (atomic_read(&adapter->pend_cmds) > 0 || 4198 !list_empty(&adapter->pending_list)) 4199 msleep(1000); /* sleep for 1s */ 4200 4201 rval = mega_do_del_logdrv(adapter, logdrv); 4202 4203 spin_lock_irqsave(&adapter->lock, flags); 4204 4205 /* 4206 * If delete operation was successful, add 0x80 to the logical drive 4207 * ids for commands in the pending queue. 4208 */ 4209 if (adapter->read_ldidmap) { 4210 struct list_head *pos; 4211 list_for_each(pos, &adapter->pending_list) { 4212 scb = list_entry(pos, scb_t, list); 4213 if (scb->pthru->logdrv < 0x80 ) 4214 scb->pthru->logdrv += 0x80; 4215 } 4216 } 4217 4218 atomic_set(&adapter->quiescent, 0); 4219 4220 mega_runpendq(adapter); 4221 4222 spin_unlock_irqrestore(&adapter->lock, flags); 4223 4224 return rval; 4225 } 4226 4227 4228 static int 4229 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 4230 { 4231 megacmd_t mc; 4232 int rval; 4233 4234 memset( &mc, 0, sizeof(megacmd_t)); 4235 4236 mc.cmd = FC_DEL_LOGDRV; 4237 mc.opcode = OP_DEL_LOGDRV; 4238 mc.subopcode = logdrv; 4239 4240 rval = mega_internal_command(adapter, &mc, NULL); 4241 4242 /* log this event */ 4243 if(rval) { 4244 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv); 4245 return rval; 4246 } 4247 4248 /* 4249 * After deleting first logical drive, the logical drives must be 4250 * addressed by adding 0x80 to the logical drive id. 4251 */ 4252 adapter->read_ldidmap = 1; 4253 4254 return rval; 4255 } 4256 4257 4258 /** 4259 * mega_get_max_sgl() 4260 * @adapter - pointer to our soft state 4261 * 4262 * Find out the maximum number of scatter-gather elements supported by this 4263 * version of the firmware 4264 */ 4265 static void 4266 mega_get_max_sgl(adapter_t *adapter) 4267 { 4268 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4269 mbox_t *mbox; 4270 4271 mbox = (mbox_t *)raw_mbox; 4272 4273 memset(mbox, 0, sizeof(raw_mbox)); 4274 4275 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4276 4277 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4278 4279 raw_mbox[0] = MAIN_MISC_OPCODE; 4280 raw_mbox[2] = GET_MAX_SG_SUPPORT; 4281 4282 4283 if( issue_scb_block(adapter, raw_mbox) ) { 4284 /* 4285 * f/w does not support this command. Choose the default value 4286 */ 4287 adapter->sglen = MIN_SGLIST; 4288 } 4289 else { 4290 adapter->sglen = *((char *)adapter->mega_buffer); 4291 4292 /* 4293 * Make sure this is not more than the resources we are 4294 * planning to allocate 4295 */ 4296 if ( adapter->sglen > MAX_SGLIST ) 4297 adapter->sglen = MAX_SGLIST; 4298 } 4299 4300 return; 4301 } 4302 4303 4304 /** 4305 * mega_support_cluster() 4306 * @adapter - pointer to our soft state 4307 * 4308 * Find out if this firmware support cluster calls. 4309 */ 4310 static int 4311 mega_support_cluster(adapter_t *adapter) 4312 { 4313 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4314 mbox_t *mbox; 4315 4316 mbox = (mbox_t *)raw_mbox; 4317 4318 memset(mbox, 0, sizeof(raw_mbox)); 4319 4320 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4321 4322 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4323 4324 /* 4325 * Try to get the initiator id. This command will succeed iff the 4326 * clustering is available on this HBA. 4327 */ 4328 raw_mbox[0] = MEGA_GET_TARGET_ID; 4329 4330 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 4331 4332 /* 4333 * Cluster support available. Get the initiator target id. 4334 * Tell our id to mid-layer too. 4335 */ 4336 adapter->this_id = *(u32 *)adapter->mega_buffer; 4337 adapter->host->this_id = adapter->this_id; 4338 4339 return 1; 4340 } 4341 4342 return 0; 4343 } 4344 4345 4346 /** 4347 * mega_adapinq() 4348 * @adapter - pointer to our soft state 4349 * @dma_handle - DMA address of the buffer 4350 * 4351 * Issue internal comamnds while interrupts are available. 4352 * We only issue direct mailbox commands from within the driver. ioctl() 4353 * interface using these routines can issue passthru commands. 4354 */ 4355 static int 4356 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 4357 { 4358 megacmd_t mc; 4359 4360 memset(&mc, 0, sizeof(megacmd_t)); 4361 4362 if( adapter->flag & BOARD_40LD ) { 4363 mc.cmd = FC_NEW_CONFIG; 4364 mc.opcode = NC_SUBOP_ENQUIRY3; 4365 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 4366 } 4367 else { 4368 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 4369 } 4370 4371 mc.xferaddr = (u32)dma_handle; 4372 4373 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 4374 return -1; 4375 } 4376 4377 return 0; 4378 } 4379 4380 4381 /** mega_internal_dev_inquiry() 4382 * @adapter - pointer to our soft state 4383 * @ch - channel for this device 4384 * @tgt - ID of this device 4385 * @buf_dma_handle - DMA address of the buffer 4386 * 4387 * Issue the scsi inquiry for the specified device. 4388 */ 4389 static int 4390 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4391 dma_addr_t buf_dma_handle) 4392 { 4393 mega_passthru *pthru; 4394 dma_addr_t pthru_dma_handle; 4395 megacmd_t mc; 4396 int rval; 4397 struct pci_dev *pdev; 4398 4399 4400 /* 4401 * For all internal commands, the buffer must be allocated in <4GB 4402 * address range 4403 */ 4404 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4405 4406 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4407 &pthru_dma_handle); 4408 4409 if( pthru == NULL ) { 4410 free_local_pdev(pdev); 4411 return -1; 4412 } 4413 4414 pthru->timeout = 2; 4415 pthru->ars = 1; 4416 pthru->reqsenselen = 14; 4417 pthru->islogical = 0; 4418 4419 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4420 4421 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4422 4423 pthru->cdblen = 6; 4424 4425 pthru->cdb[0] = INQUIRY; 4426 pthru->cdb[1] = 0; 4427 pthru->cdb[2] = 0; 4428 pthru->cdb[3] = 0; 4429 pthru->cdb[4] = 255; 4430 pthru->cdb[5] = 0; 4431 4432 4433 pthru->dataxferaddr = (u32)buf_dma_handle; 4434 pthru->dataxferlen = 256; 4435 4436 memset(&mc, 0, sizeof(megacmd_t)); 4437 4438 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4439 mc.xferaddr = (u32)pthru_dma_handle; 4440 4441 rval = mega_internal_command(adapter, &mc, pthru); 4442 4443 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4444 pthru_dma_handle); 4445 4446 free_local_pdev(pdev); 4447 4448 return rval; 4449 } 4450 4451 4452 /** 4453 * mega_internal_command() 4454 * @adapter - pointer to our soft state 4455 * @mc - the mailbox command 4456 * @pthru - Passthru structure for DCDB commands 4457 * 4458 * Issue the internal commands in interrupt mode. 4459 * The last argument is the address of the passthru structure if the command 4460 * to be fired is a passthru command 4461 * 4462 * lockscope specifies whether the caller has already acquired the lock. Of 4463 * course, the caller must know which lock we are talking about. 4464 * 4465 * Note: parameter 'pthru' is null for non-passthru commands. 4466 */ 4467 static int 4468 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4469 { 4470 Scsi_Cmnd *scmd; 4471 struct scsi_device *sdev; 4472 scb_t *scb; 4473 int rval; 4474 4475 /* 4476 * The internal commands share one command id and hence are 4477 * serialized. This is so because we want to reserve maximum number of 4478 * available command ids for the I/O commands. 4479 */ 4480 mutex_lock(&adapter->int_mtx); 4481 4482 scb = &adapter->int_scb; 4483 memset(scb, 0, sizeof(scb_t)); 4484 4485 scmd = &adapter->int_scmd; 4486 memset(scmd, 0, sizeof(Scsi_Cmnd)); 4487 4488 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL); 4489 memset(sdev, 0, sizeof(struct scsi_device)); 4490 scmd->device = sdev; 4491 4492 scmd->device->host = adapter->host; 4493 scmd->request_buffer = (void *)scb; 4494 scmd->cmnd[0] = MEGA_INTERNAL_CMD; 4495 4496 scb->state |= SCB_ACTIVE; 4497 scb->cmd = scmd; 4498 4499 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4500 4501 /* 4502 * Is it a passthru command 4503 */ 4504 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 4505 4506 scb->pthru = pthru; 4507 } 4508 4509 scb->idx = CMDID_INT_CMDS; 4510 4511 megaraid_queue(scmd, mega_internal_done); 4512 4513 wait_for_completion(&adapter->int_waitq); 4514 4515 rval = scmd->result; 4516 mc->status = scmd->result; 4517 kfree(sdev); 4518 4519 /* 4520 * Print a debug message for all failed commands. Applications can use 4521 * this information. 4522 */ 4523 if( scmd->result && trace_level ) { 4524 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", 4525 mc->cmd, mc->opcode, mc->subopcode, scmd->result); 4526 } 4527 4528 mutex_unlock(&adapter->int_mtx); 4529 4530 return rval; 4531 } 4532 4533 4534 /** 4535 * mega_internal_done() 4536 * @scmd - internal scsi command 4537 * 4538 * Callback routine for internal commands. 4539 */ 4540 static void 4541 mega_internal_done(Scsi_Cmnd *scmd) 4542 { 4543 adapter_t *adapter; 4544 4545 adapter = (adapter_t *)scmd->device->host->hostdata; 4546 4547 complete(&adapter->int_waitq); 4548 4549 } 4550 4551 4552 static struct scsi_host_template megaraid_template = { 4553 .module = THIS_MODULE, 4554 .name = "MegaRAID", 4555 .proc_name = "megaraid_legacy", 4556 .info = megaraid_info, 4557 .queuecommand = megaraid_queue, 4558 .bios_param = megaraid_biosparam, 4559 .max_sectors = MAX_SECTORS_PER_IO, 4560 .can_queue = MAX_COMMANDS, 4561 .this_id = DEFAULT_INITIATOR_ID, 4562 .sg_tablesize = MAX_SGLIST, 4563 .cmd_per_lun = DEF_CMD_PER_LUN, 4564 .use_clustering = ENABLE_CLUSTERING, 4565 .eh_abort_handler = megaraid_abort, 4566 .eh_device_reset_handler = megaraid_reset, 4567 .eh_bus_reset_handler = megaraid_reset, 4568 .eh_host_reset_handler = megaraid_reset, 4569 }; 4570 4571 static int __devinit 4572 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4573 { 4574 struct Scsi_Host *host; 4575 adapter_t *adapter; 4576 unsigned long mega_baseport, tbase, flag = 0; 4577 u16 subsysid, subsysvid; 4578 u8 pci_bus, pci_dev_func; 4579 int irq, i, j; 4580 int error = -ENODEV; 4581 4582 if (pci_enable_device(pdev)) 4583 goto out; 4584 pci_set_master(pdev); 4585 4586 pci_bus = pdev->bus->number; 4587 pci_dev_func = pdev->devfn; 4588 4589 /* 4590 * The megaraid3 stuff reports the ID of the Intel part which is not 4591 * remotely specific to the megaraid 4592 */ 4593 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4594 u16 magic; 4595 /* 4596 * Don't fall over the Compaq management cards using the same 4597 * PCI identifier 4598 */ 4599 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4600 pdev->subsystem_device == 0xC000) 4601 return -ENODEV; 4602 /* Now check the magic signature byte */ 4603 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4604 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4605 return -ENODEV; 4606 /* Ok it is probably a megaraid */ 4607 } 4608 4609 /* 4610 * For these vendor and device ids, signature offsets are not 4611 * valid and 64 bit is implicit 4612 */ 4613 if (id->driver_data & BOARD_64BIT) 4614 flag |= BOARD_64BIT; 4615 else { 4616 u32 magic64; 4617 4618 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4619 if (magic64 == HBA_SIGNATURE_64BIT) 4620 flag |= BOARD_64BIT; 4621 } 4622 4623 subsysvid = pdev->subsystem_vendor; 4624 subsysid = pdev->subsystem_device; 4625 4626 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:", 4627 id->vendor, id->device, pci_bus); 4628 4629 printk("slot %d:func %d\n", 4630 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func)); 4631 4632 /* Read the base port and IRQ from PCI */ 4633 mega_baseport = pci_resource_start(pdev, 0); 4634 irq = pdev->irq; 4635 4636 tbase = mega_baseport; 4637 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4638 flag |= BOARD_MEMMAP; 4639 4640 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4641 printk(KERN_WARNING "megaraid: mem region busy!\n"); 4642 goto out_disable_device; 4643 } 4644 4645 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4646 if (!mega_baseport) { 4647 printk(KERN_WARNING 4648 "megaraid: could not map hba memory\n"); 4649 goto out_release_region; 4650 } 4651 } else { 4652 flag |= BOARD_IOMAP; 4653 mega_baseport += 0x10; 4654 4655 if (!request_region(mega_baseport, 16, "megaraid")) 4656 goto out_disable_device; 4657 } 4658 4659 /* Initialize SCSI Host structure */ 4660 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4661 if (!host) 4662 goto out_iounmap; 4663 4664 adapter = (adapter_t *)host->hostdata; 4665 memset(adapter, 0, sizeof(adapter_t)); 4666 4667 printk(KERN_NOTICE 4668 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4669 host->host_no, mega_baseport, irq); 4670 4671 adapter->base = mega_baseport; 4672 if (flag & BOARD_MEMMAP) 4673 adapter->mmio_base = (void __iomem *) 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 IRQF_SHARED, "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