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