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 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { 1757 sg = scsi_sglist(cmd); 1758 scb->dma_h_bulkdata = sg_dma_address(sg); 1759 *buf = (u32)scb->dma_h_bulkdata; 1760 *len = sg_dma_len(sg); 1761 return 0; 1762 } 1763 1764 scsi_for_each_sg(cmd, sg, sgcnt, idx) { 1765 if (adapter->has_64bit_addr) { 1766 scb->sgl64[idx].address = sg_dma_address(sg); 1767 *len += scb->sgl64[idx].length = sg_dma_len(sg); 1768 } else { 1769 scb->sgl[idx].address = sg_dma_address(sg); 1770 *len += scb->sgl[idx].length = sg_dma_len(sg); 1771 } 1772 } 1773 1774 /* Reset pointer and length fields */ 1775 *buf = scb->sgl_dma_addr; 1776 1777 /* Return count of SG requests */ 1778 return sgcnt; 1779 } 1780 1781 1782 /* 1783 * mega_8_to_40ld() 1784 * 1785 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1786 * Enquiry3 structures for later use 1787 */ 1788 static void 1789 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1790 mega_product_info *product_info) 1791 { 1792 int i; 1793 1794 product_info->max_commands = inquiry->adapter_info.max_commands; 1795 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1796 product_info->nchannels = inquiry->adapter_info.nchannels; 1797 1798 for (i = 0; i < 4; i++) { 1799 product_info->fw_version[i] = 1800 inquiry->adapter_info.fw_version[i]; 1801 1802 product_info->bios_version[i] = 1803 inquiry->adapter_info.bios_version[i]; 1804 } 1805 enquiry3->cache_flush_interval = 1806 inquiry->adapter_info.cache_flush_interval; 1807 1808 product_info->dram_size = inquiry->adapter_info.dram_size; 1809 1810 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1811 1812 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1813 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1814 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1815 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1816 } 1817 1818 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1819 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1820 } 1821 1822 static inline void 1823 mega_free_sgl(adapter_t *adapter) 1824 { 1825 scb_t *scb; 1826 int i; 1827 1828 for(i = 0; i < adapter->max_cmds; i++) { 1829 1830 scb = &adapter->scb_list[i]; 1831 1832 if( scb->sgl64 ) { 1833 pci_free_consistent(adapter->dev, 1834 sizeof(mega_sgl64) * adapter->sglen, 1835 scb->sgl64, 1836 scb->sgl_dma_addr); 1837 1838 scb->sgl64 = NULL; 1839 } 1840 1841 if( scb->pthru ) { 1842 pci_free_consistent(adapter->dev, sizeof(mega_passthru), 1843 scb->pthru, scb->pthru_dma_addr); 1844 1845 scb->pthru = NULL; 1846 } 1847 1848 if( scb->epthru ) { 1849 pci_free_consistent(adapter->dev, 1850 sizeof(mega_ext_passthru), 1851 scb->epthru, scb->epthru_dma_addr); 1852 1853 scb->epthru = NULL; 1854 } 1855 1856 } 1857 } 1858 1859 1860 /* 1861 * Get information about the card/driver 1862 */ 1863 const char * 1864 megaraid_info(struct Scsi_Host *host) 1865 { 1866 static char buffer[512]; 1867 adapter_t *adapter; 1868 1869 adapter = (adapter_t *)host->hostdata; 1870 1871 sprintf (buffer, 1872 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1873 adapter->fw_version, adapter->product_info.max_commands, 1874 adapter->host->max_id, adapter->host->max_channel, 1875 adapter->host->max_lun); 1876 return buffer; 1877 } 1878 1879 /* 1880 * Abort a previous SCSI request. Only commands on the pending list can be 1881 * aborted. All the commands issued to the F/W must complete. 1882 */ 1883 static int 1884 megaraid_abort(Scsi_Cmnd *cmd) 1885 { 1886 adapter_t *adapter; 1887 int rval; 1888 1889 adapter = (adapter_t *)cmd->device->host->hostdata; 1890 1891 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1892 1893 /* 1894 * This is required here to complete any completed requests 1895 * to be communicated over to the mid layer. 1896 */ 1897 mega_rundoneq(adapter); 1898 1899 return rval; 1900 } 1901 1902 1903 static int 1904 megaraid_reset(struct scsi_cmnd *cmd) 1905 { 1906 adapter_t *adapter; 1907 megacmd_t mc; 1908 int rval; 1909 1910 adapter = (adapter_t *)cmd->device->host->hostdata; 1911 1912 #if MEGA_HAVE_CLUSTERING 1913 mc.cmd = MEGA_CLUSTER_CMD; 1914 mc.opcode = MEGA_RESET_RESERVATIONS; 1915 1916 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1917 printk(KERN_WARNING 1918 "megaraid: reservation reset failed.\n"); 1919 } 1920 else { 1921 printk(KERN_INFO "megaraid: reservation reset.\n"); 1922 } 1923 #endif 1924 1925 spin_lock_irq(&adapter->lock); 1926 1927 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 1928 1929 /* 1930 * This is required here to complete any completed requests 1931 * to be communicated over to the mid layer. 1932 */ 1933 mega_rundoneq(adapter); 1934 spin_unlock_irq(&adapter->lock); 1935 1936 return rval; 1937 } 1938 1939 /** 1940 * megaraid_abort_and_reset() 1941 * @adapter - megaraid soft state 1942 * @cmd - scsi command to be aborted or reset 1943 * @aor - abort or reset flag 1944 * 1945 * Try to locate the scsi command in the pending queue. If found and is not 1946 * issued to the controller, abort/reset it. Otherwise return failure 1947 */ 1948 static int 1949 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor) 1950 { 1951 struct list_head *pos, *next; 1952 scb_t *scb; 1953 1954 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n", 1955 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number, 1956 cmd->cmnd[0], cmd->device->channel, 1957 cmd->device->id, cmd->device->lun); 1958 1959 if(list_empty(&adapter->pending_list)) 1960 return FALSE; 1961 1962 list_for_each_safe(pos, next, &adapter->pending_list) { 1963 1964 scb = list_entry(pos, scb_t, list); 1965 1966 if (scb->cmd == cmd) { /* Found command */ 1967 1968 scb->state |= aor; 1969 1970 /* 1971 * Check if this command has firmare owenership. If 1972 * yes, we cannot reset this command. Whenever, f/w 1973 * completes this command, we will return appropriate 1974 * status from ISR. 1975 */ 1976 if( scb->state & SCB_ISSUED ) { 1977 1978 printk(KERN_WARNING 1979 "megaraid: %s-%lx[%x], fw owner.\n", 1980 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1981 cmd->serial_number, scb->idx); 1982 1983 return FALSE; 1984 } 1985 else { 1986 1987 /* 1988 * Not yet issued! Remove from the pending 1989 * list 1990 */ 1991 printk(KERN_WARNING 1992 "megaraid: %s-%lx[%x], driver owner.\n", 1993 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1994 cmd->serial_number, scb->idx); 1995 1996 mega_free_scb(adapter, scb); 1997 1998 if( aor == SCB_ABORT ) { 1999 cmd->result = (DID_ABORT << 16); 2000 } 2001 else { 2002 cmd->result = (DID_RESET << 16); 2003 } 2004 2005 list_add_tail(SCSI_LIST(cmd), 2006 &adapter->completed_list); 2007 2008 return TRUE; 2009 } 2010 } 2011 } 2012 2013 return FALSE; 2014 } 2015 2016 static inline int 2017 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2018 { 2019 *pdev = alloc_pci_dev(); 2020 2021 if( *pdev == NULL ) return -1; 2022 2023 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2024 2025 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) { 2026 kfree(*pdev); 2027 return -1; 2028 } 2029 2030 return 0; 2031 } 2032 2033 static inline void 2034 free_local_pdev(struct pci_dev *pdev) 2035 { 2036 kfree(pdev); 2037 } 2038 2039 /** 2040 * mega_allocate_inquiry() 2041 * @dma_handle - handle returned for dma address 2042 * @pdev - handle to pci device 2043 * 2044 * allocates memory for inquiry structure 2045 */ 2046 static inline void * 2047 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2048 { 2049 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2050 } 2051 2052 2053 static inline void 2054 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2055 { 2056 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2057 } 2058 2059 2060 #ifdef CONFIG_PROC_FS 2061 /* Following code handles /proc fs */ 2062 2063 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \ 2064 S_IRUSR | S_IFREG, \ 2065 controller_proc_dir_entry, \ 2066 func, adapter) 2067 2068 /** 2069 * mega_create_proc_entry() 2070 * @index - index in soft state array 2071 * @parent - parent node for this /proc entry 2072 * 2073 * Creates /proc entries for our controllers. 2074 */ 2075 static void 2076 mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2077 { 2078 struct proc_dir_entry *controller_proc_dir_entry = NULL; 2079 u8 string[64] = { 0 }; 2080 adapter_t *adapter = hba_soft_state[index]; 2081 2082 sprintf(string, "hba%d", adapter->host->host_no); 2083 2084 controller_proc_dir_entry = 2085 adapter->controller_proc_dir_entry = proc_mkdir(string, parent); 2086 2087 if(!controller_proc_dir_entry) { 2088 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n"); 2089 return; 2090 } 2091 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config); 2092 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat); 2093 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox); 2094 #if MEGA_HAVE_ENH_PROC 2095 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate); 2096 adapter->proc_battery = CREATE_READ_PROC("battery-status", 2097 proc_battery); 2098 2099 /* 2100 * Display each physical drive on its channel 2101 */ 2102 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0", 2103 proc_pdrv_ch0); 2104 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1", 2105 proc_pdrv_ch1); 2106 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2", 2107 proc_pdrv_ch2); 2108 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3", 2109 proc_pdrv_ch3); 2110 2111 /* 2112 * Display a set of up to 10 logical drive through each of following 2113 * /proc entries 2114 */ 2115 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9", 2116 proc_rdrv_10); 2117 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19", 2118 proc_rdrv_20); 2119 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29", 2120 proc_rdrv_30); 2121 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39", 2122 proc_rdrv_40); 2123 #endif 2124 } 2125 2126 2127 /** 2128 * proc_read_config() 2129 * @page - buffer to write the data in 2130 * @start - where the actual data has been written in page 2131 * @offset - same meaning as the read system call 2132 * @count - same meaning as the read system call 2133 * @eof - set if no more data needs to be returned 2134 * @data - pointer to our soft state 2135 * 2136 * Display configuration information about the controller. 2137 */ 2138 static int 2139 proc_read_config(char *page, char **start, off_t offset, int count, int *eof, 2140 void *data) 2141 { 2142 2143 adapter_t *adapter = (adapter_t *)data; 2144 int len = 0; 2145 2146 len += sprintf(page+len, "%s", MEGARAID_VERSION); 2147 2148 if(adapter->product_info.product_name[0]) 2149 len += sprintf(page+len, "%s\n", 2150 adapter->product_info.product_name); 2151 2152 len += sprintf(page+len, "Controller Type: "); 2153 2154 if( adapter->flag & BOARD_MEMMAP ) { 2155 len += sprintf(page+len, 2156 "438/466/467/471/493/518/520/531/532\n"); 2157 } 2158 else { 2159 len += sprintf(page+len, 2160 "418/428/434\n"); 2161 } 2162 2163 if(adapter->flag & BOARD_40LD) { 2164 len += sprintf(page+len, 2165 "Controller Supports 40 Logical Drives\n"); 2166 } 2167 2168 if(adapter->flag & BOARD_64BIT) { 2169 len += sprintf(page+len, 2170 "Controller capable of 64-bit memory addressing\n"); 2171 } 2172 if( adapter->has_64bit_addr ) { 2173 len += sprintf(page+len, 2174 "Controller using 64-bit memory addressing\n"); 2175 } 2176 else { 2177 len += sprintf(page+len, 2178 "Controller is not using 64-bit memory addressing\n"); 2179 } 2180 2181 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base, 2182 adapter->host->irq); 2183 2184 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n", 2185 adapter->numldrv, adapter->product_info.nchannels); 2186 2187 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n", 2188 adapter->fw_version, adapter->bios_version, 2189 adapter->product_info.dram_size); 2190 2191 len += sprintf(page+len, 2192 "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2193 adapter->product_info.max_commands, adapter->max_cmds); 2194 2195 len += sprintf(page+len, "support_ext_cdb = %d\n", 2196 adapter->support_ext_cdb); 2197 len += sprintf(page+len, "support_random_del = %d\n", 2198 adapter->support_random_del); 2199 len += sprintf(page+len, "boot_ldrv_enabled = %d\n", 2200 adapter->boot_ldrv_enabled); 2201 len += sprintf(page+len, "boot_ldrv = %d\n", 2202 adapter->boot_ldrv); 2203 len += sprintf(page+len, "boot_pdrv_enabled = %d\n", 2204 adapter->boot_pdrv_enabled); 2205 len += sprintf(page+len, "boot_pdrv_ch = %d\n", 2206 adapter->boot_pdrv_ch); 2207 len += sprintf(page+len, "boot_pdrv_tgt = %d\n", 2208 adapter->boot_pdrv_tgt); 2209 len += sprintf(page+len, "quiescent = %d\n", 2210 atomic_read(&adapter->quiescent)); 2211 len += sprintf(page+len, "has_cluster = %d\n", 2212 adapter->has_cluster); 2213 2214 len += sprintf(page+len, "\nModule Parameters:\n"); 2215 len += sprintf(page+len, "max_cmd_per_lun = %d\n", 2216 max_cmd_per_lun); 2217 len += sprintf(page+len, "max_sectors_per_io = %d\n", 2218 max_sectors_per_io); 2219 2220 *eof = 1; 2221 2222 return len; 2223 } 2224 2225 2226 2227 /** 2228 * proc_read_stat() 2229 * @page - buffer to write the data in 2230 * @start - where the actual data has been written in page 2231 * @offset - same meaning as the read system call 2232 * @count - same meaning as the read system call 2233 * @eof - set if no more data needs to be returned 2234 * @data - pointer to our soft state 2235 * 2236 * Diaplay statistical information about the I/O activity. 2237 */ 2238 static int 2239 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof, 2240 void *data) 2241 { 2242 adapter_t *adapter; 2243 int len; 2244 int i; 2245 2246 i = 0; /* avoid compilation warnings */ 2247 len = 0; 2248 adapter = (adapter_t *)data; 2249 2250 len = sprintf(page, "Statistical Information for this controller\n"); 2251 len += sprintf(page+len, "pend_cmds = %d\n", 2252 atomic_read(&adapter->pend_cmds)); 2253 #if MEGA_HAVE_STATS 2254 for(i = 0; i < adapter->numldrv; i++) { 2255 len += sprintf(page+len, "Logical Drive %d:\n", i); 2256 2257 len += sprintf(page+len, 2258 "\tReads Issued = %lu, Writes Issued = %lu\n", 2259 adapter->nreads[i], adapter->nwrites[i]); 2260 2261 len += sprintf(page+len, 2262 "\tSectors Read = %lu, Sectors Written = %lu\n", 2263 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2264 2265 len += sprintf(page+len, 2266 "\tRead errors = %lu, Write errors = %lu\n\n", 2267 adapter->rd_errors[i], adapter->wr_errors[i]); 2268 } 2269 #else 2270 len += sprintf(page+len, 2271 "IO and error counters not compiled in driver.\n"); 2272 #endif 2273 2274 *eof = 1; 2275 2276 return len; 2277 } 2278 2279 2280 /** 2281 * proc_read_mbox() 2282 * @page - buffer to write the data in 2283 * @start - where the actual data has been written in page 2284 * @offset - same meaning as the read system call 2285 * @count - same meaning as the read system call 2286 * @eof - set if no more data needs to be returned 2287 * @data - pointer to our soft state 2288 * 2289 * Display mailbox information for the last command issued. This information 2290 * is good for debugging. 2291 */ 2292 static int 2293 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof, 2294 void *data) 2295 { 2296 2297 adapter_t *adapter = (adapter_t *)data; 2298 volatile mbox_t *mbox = adapter->mbox; 2299 int len = 0; 2300 2301 len = sprintf(page, "Contents of Mail Box Structure\n"); 2302 len += sprintf(page+len, " Fw Command = 0x%02x\n", 2303 mbox->m_out.cmd); 2304 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n", 2305 mbox->m_out.cmdid); 2306 len += sprintf(page+len, " No of Sectors= %04d\n", 2307 mbox->m_out.numsectors); 2308 len += sprintf(page+len, " LBA = 0x%02x\n", 2309 mbox->m_out.lba); 2310 len += sprintf(page+len, " DTA = 0x%08x\n", 2311 mbox->m_out.xferaddr); 2312 len += sprintf(page+len, " Logical Drive= 0x%02x\n", 2313 mbox->m_out.logdrv); 2314 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n", 2315 mbox->m_out.numsgelements); 2316 len += sprintf(page+len, " Busy = %01x\n", 2317 mbox->m_in.busy); 2318 len += sprintf(page+len, " Status = 0x%02x\n", 2319 mbox->m_in.status); 2320 2321 *eof = 1; 2322 2323 return len; 2324 } 2325 2326 2327 /** 2328 * proc_rebuild_rate() 2329 * @page - buffer to write the data in 2330 * @start - where the actual data has been written in page 2331 * @offset - same meaning as the read system call 2332 * @count - same meaning as the read system call 2333 * @eof - set if no more data needs to be returned 2334 * @data - pointer to our soft state 2335 * 2336 * Display current rebuild rate 2337 */ 2338 static int 2339 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof, 2340 void *data) 2341 { 2342 adapter_t *adapter = (adapter_t *)data; 2343 dma_addr_t dma_handle; 2344 caddr_t inquiry; 2345 struct pci_dev *pdev; 2346 int len = 0; 2347 2348 if( make_local_pdev(adapter, &pdev) != 0 ) { 2349 *eof = 1; 2350 return len; 2351 } 2352 2353 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2354 free_local_pdev(pdev); 2355 *eof = 1; 2356 return len; 2357 } 2358 2359 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2360 2361 len = sprintf(page, "Adapter inquiry failed.\n"); 2362 2363 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2364 2365 mega_free_inquiry(inquiry, dma_handle, pdev); 2366 2367 free_local_pdev(pdev); 2368 2369 *eof = 1; 2370 2371 return len; 2372 } 2373 2374 if( adapter->flag & BOARD_40LD ) { 2375 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2376 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2377 } 2378 else { 2379 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2380 ((mraid_ext_inquiry *) 2381 inquiry)->raid_inq.adapter_info.rebuild_rate); 2382 } 2383 2384 2385 mega_free_inquiry(inquiry, dma_handle, pdev); 2386 2387 free_local_pdev(pdev); 2388 2389 *eof = 1; 2390 2391 return len; 2392 } 2393 2394 2395 /** 2396 * proc_battery() 2397 * @page - buffer to write the data in 2398 * @start - where the actual data has been written in page 2399 * @offset - same meaning as the read system call 2400 * @count - same meaning as the read system call 2401 * @eof - set if no more data needs to be returned 2402 * @data - pointer to our soft state 2403 * 2404 * Display information about the battery module on the controller. 2405 */ 2406 static int 2407 proc_battery(char *page, char **start, off_t offset, int count, int *eof, 2408 void *data) 2409 { 2410 adapter_t *adapter = (adapter_t *)data; 2411 dma_addr_t dma_handle; 2412 caddr_t inquiry; 2413 struct pci_dev *pdev; 2414 u8 battery_status = 0; 2415 char str[256]; 2416 int len = 0; 2417 2418 if( make_local_pdev(adapter, &pdev) != 0 ) { 2419 *eof = 1; 2420 return len; 2421 } 2422 2423 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2424 free_local_pdev(pdev); 2425 *eof = 1; 2426 return len; 2427 } 2428 2429 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2430 2431 len = sprintf(page, "Adapter inquiry failed.\n"); 2432 2433 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2434 2435 mega_free_inquiry(inquiry, dma_handle, pdev); 2436 2437 free_local_pdev(pdev); 2438 2439 *eof = 1; 2440 2441 return len; 2442 } 2443 2444 if( adapter->flag & BOARD_40LD ) { 2445 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2446 } 2447 else { 2448 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2449 raid_inq.adapter_info.battery_status; 2450 } 2451 2452 /* 2453 * Decode the battery status 2454 */ 2455 sprintf(str, "Battery Status:[%d]", battery_status); 2456 2457 if(battery_status == MEGA_BATT_CHARGE_DONE) 2458 strcat(str, " Charge Done"); 2459 2460 if(battery_status & MEGA_BATT_MODULE_MISSING) 2461 strcat(str, " Module Missing"); 2462 2463 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2464 strcat(str, " Low Voltage"); 2465 2466 if(battery_status & MEGA_BATT_TEMP_HIGH) 2467 strcat(str, " Temperature High"); 2468 2469 if(battery_status & MEGA_BATT_PACK_MISSING) 2470 strcat(str, " Pack Missing"); 2471 2472 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2473 strcat(str, " Charge In-progress"); 2474 2475 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2476 strcat(str, " Charge Fail"); 2477 2478 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2479 strcat(str, " Cycles Exceeded"); 2480 2481 len = sprintf(page, "%s\n", str); 2482 2483 2484 mega_free_inquiry(inquiry, dma_handle, pdev); 2485 2486 free_local_pdev(pdev); 2487 2488 *eof = 1; 2489 2490 return len; 2491 } 2492 2493 2494 /** 2495 * proc_pdrv_ch0() 2496 * @page - buffer to write the data in 2497 * @start - where the actual data has been written in page 2498 * @offset - same meaning as the read system call 2499 * @count - same meaning as the read system call 2500 * @eof - set if no more data needs to be returned 2501 * @data - pointer to our soft state 2502 * 2503 * Display information about the physical drives on physical channel 0. 2504 */ 2505 static int 2506 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof, 2507 void *data) 2508 { 2509 adapter_t *adapter = (adapter_t *)data; 2510 2511 *eof = 1; 2512 2513 return (proc_pdrv(adapter, page, 0)); 2514 } 2515 2516 2517 /** 2518 * proc_pdrv_ch1() 2519 * @page - buffer to write the data in 2520 * @start - where the actual data has been written in page 2521 * @offset - same meaning as the read system call 2522 * @count - same meaning as the read system call 2523 * @eof - set if no more data needs to be returned 2524 * @data - pointer to our soft state 2525 * 2526 * Display information about the physical drives on physical channel 1. 2527 */ 2528 static int 2529 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof, 2530 void *data) 2531 { 2532 adapter_t *adapter = (adapter_t *)data; 2533 2534 *eof = 1; 2535 2536 return (proc_pdrv(adapter, page, 1)); 2537 } 2538 2539 2540 /** 2541 * proc_pdrv_ch2() 2542 * @page - buffer to write the data in 2543 * @start - where the actual data has been written in page 2544 * @offset - same meaning as the read system call 2545 * @count - same meaning as the read system call 2546 * @eof - set if no more data needs to be returned 2547 * @data - pointer to our soft state 2548 * 2549 * Display information about the physical drives on physical channel 2. 2550 */ 2551 static int 2552 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof, 2553 void *data) 2554 { 2555 adapter_t *adapter = (adapter_t *)data; 2556 2557 *eof = 1; 2558 2559 return (proc_pdrv(adapter, page, 2)); 2560 } 2561 2562 2563 /** 2564 * proc_pdrv_ch3() 2565 * @page - buffer to write the data in 2566 * @start - where the actual data has been written in page 2567 * @offset - same meaning as the read system call 2568 * @count - same meaning as the read system call 2569 * @eof - set if no more data needs to be returned 2570 * @data - pointer to our soft state 2571 * 2572 * Display information about the physical drives on physical channel 3. 2573 */ 2574 static int 2575 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof, 2576 void *data) 2577 { 2578 adapter_t *adapter = (adapter_t *)data; 2579 2580 *eof = 1; 2581 2582 return (proc_pdrv(adapter, page, 3)); 2583 } 2584 2585 2586 /** 2587 * proc_pdrv() 2588 * @page - buffer to write the data in 2589 * @adapter - pointer to our soft state 2590 * 2591 * Display information about the physical drives. 2592 */ 2593 static int 2594 proc_pdrv(adapter_t *adapter, char *page, int channel) 2595 { 2596 dma_addr_t dma_handle; 2597 char *scsi_inq; 2598 dma_addr_t scsi_inq_dma_handle; 2599 caddr_t inquiry; 2600 struct pci_dev *pdev; 2601 u8 *pdrv_state; 2602 u8 state; 2603 int tgt; 2604 int max_channels; 2605 int len = 0; 2606 char str[80]; 2607 int i; 2608 2609 if( make_local_pdev(adapter, &pdev) != 0 ) { 2610 return len; 2611 } 2612 2613 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2614 goto free_pdev; 2615 } 2616 2617 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2618 len = sprintf(page, "Adapter inquiry failed.\n"); 2619 2620 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2621 2622 goto free_inquiry; 2623 } 2624 2625 2626 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2627 2628 if( scsi_inq == NULL ) { 2629 len = sprintf(page, "memory not available for scsi inq.\n"); 2630 2631 goto free_inquiry; 2632 } 2633 2634 if( adapter->flag & BOARD_40LD ) { 2635 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2636 } 2637 else { 2638 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2639 raid_inq.pdrv_info.pdrv_state; 2640 } 2641 2642 max_channels = adapter->product_info.nchannels; 2643 2644 if( channel >= max_channels ) { 2645 goto free_pci; 2646 } 2647 2648 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2649 2650 i = channel*16 + tgt; 2651 2652 state = *(pdrv_state + i); 2653 2654 switch( state & 0x0F ) { 2655 2656 case PDRV_ONLINE: 2657 sprintf(str, 2658 "Channel:%2d Id:%2d State: Online", 2659 channel, tgt); 2660 break; 2661 2662 case PDRV_FAILED: 2663 sprintf(str, 2664 "Channel:%2d Id:%2d State: Failed", 2665 channel, tgt); 2666 break; 2667 2668 case PDRV_RBLD: 2669 sprintf(str, 2670 "Channel:%2d Id:%2d State: Rebuild", 2671 channel, tgt); 2672 break; 2673 2674 case PDRV_HOTSPARE: 2675 sprintf(str, 2676 "Channel:%2d Id:%2d State: Hot spare", 2677 channel, tgt); 2678 break; 2679 2680 default: 2681 sprintf(str, 2682 "Channel:%2d Id:%2d State: Un-configured", 2683 channel, tgt); 2684 break; 2685 2686 } 2687 2688 /* 2689 * This interface displays inquiries for disk drives 2690 * only. Inquries for logical drives and non-disk 2691 * devices are available through /proc/scsi/scsi 2692 */ 2693 memset(scsi_inq, 0, 256); 2694 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2695 scsi_inq_dma_handle) || 2696 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2697 continue; 2698 } 2699 2700 /* 2701 * Check for overflow. We print less than 240 2702 * characters for inquiry 2703 */ 2704 if( (len + 240) >= PAGE_SIZE ) break; 2705 2706 len += sprintf(page+len, "%s.\n", str); 2707 2708 len += mega_print_inquiry(page+len, scsi_inq); 2709 } 2710 2711 free_pci: 2712 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2713 free_inquiry: 2714 mega_free_inquiry(inquiry, dma_handle, pdev); 2715 free_pdev: 2716 free_local_pdev(pdev); 2717 2718 return len; 2719 } 2720 2721 2722 /* 2723 * Display scsi inquiry 2724 */ 2725 static int 2726 mega_print_inquiry(char *page, char *scsi_inq) 2727 { 2728 int len = 0; 2729 int i; 2730 2731 len = sprintf(page, " Vendor: "); 2732 for( i = 8; i < 16; i++ ) { 2733 len += sprintf(page+len, "%c", scsi_inq[i]); 2734 } 2735 2736 len += sprintf(page+len, " Model: "); 2737 2738 for( i = 16; i < 32; i++ ) { 2739 len += sprintf(page+len, "%c", scsi_inq[i]); 2740 } 2741 2742 len += sprintf(page+len, " Rev: "); 2743 2744 for( i = 32; i < 36; i++ ) { 2745 len += sprintf(page+len, "%c", scsi_inq[i]); 2746 } 2747 2748 len += sprintf(page+len, "\n"); 2749 2750 i = scsi_inq[0] & 0x1f; 2751 2752 len += sprintf(page+len, " Type: %s ", scsi_device_type(i)); 2753 2754 len += sprintf(page+len, 2755 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07); 2756 2757 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2758 len += sprintf(page+len, " CCS\n"); 2759 else 2760 len += sprintf(page+len, "\n"); 2761 2762 return len; 2763 } 2764 2765 2766 /** 2767 * proc_rdrv_10() 2768 * @page - buffer to write the data in 2769 * @start - where the actual data has been written in page 2770 * @offset - same meaning as the read system call 2771 * @count - same meaning as the read system call 2772 * @eof - set if no more data needs to be returned 2773 * @data - pointer to our soft state 2774 * 2775 * Display real time information about the logical drives 0 through 9. 2776 */ 2777 static int 2778 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof, 2779 void *data) 2780 { 2781 adapter_t *adapter = (adapter_t *)data; 2782 2783 *eof = 1; 2784 2785 return (proc_rdrv(adapter, page, 0, 9)); 2786 } 2787 2788 2789 /** 2790 * proc_rdrv_20() 2791 * @page - buffer to write the data in 2792 * @start - where the actual data has been written in page 2793 * @offset - same meaning as the read system call 2794 * @count - same meaning as the read system call 2795 * @eof - set if no more data needs to be returned 2796 * @data - pointer to our soft state 2797 * 2798 * Display real time information about the logical drives 0 through 9. 2799 */ 2800 static int 2801 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof, 2802 void *data) 2803 { 2804 adapter_t *adapter = (adapter_t *)data; 2805 2806 *eof = 1; 2807 2808 return (proc_rdrv(adapter, page, 10, 19)); 2809 } 2810 2811 2812 /** 2813 * proc_rdrv_30() 2814 * @page - buffer to write the data in 2815 * @start - where the actual data has been written in page 2816 * @offset - same meaning as the read system call 2817 * @count - same meaning as the read system call 2818 * @eof - set if no more data needs to be returned 2819 * @data - pointer to our soft state 2820 * 2821 * Display real time information about the logical drives 0 through 9. 2822 */ 2823 static int 2824 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof, 2825 void *data) 2826 { 2827 adapter_t *adapter = (adapter_t *)data; 2828 2829 *eof = 1; 2830 2831 return (proc_rdrv(adapter, page, 20, 29)); 2832 } 2833 2834 2835 /** 2836 * proc_rdrv_40() 2837 * @page - buffer to write the data in 2838 * @start - where the actual data has been written in page 2839 * @offset - same meaning as the read system call 2840 * @count - same meaning as the read system call 2841 * @eof - set if no more data needs to be returned 2842 * @data - pointer to our soft state 2843 * 2844 * Display real time information about the logical drives 0 through 9. 2845 */ 2846 static int 2847 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof, 2848 void *data) 2849 { 2850 adapter_t *adapter = (adapter_t *)data; 2851 2852 *eof = 1; 2853 2854 return (proc_rdrv(adapter, page, 30, 39)); 2855 } 2856 2857 2858 /** 2859 * proc_rdrv() 2860 * @page - buffer to write the data in 2861 * @adapter - pointer to our soft state 2862 * @start - starting logical drive to display 2863 * @end - ending logical drive to display 2864 * 2865 * We do not print the inquiry information since its already available through 2866 * /proc/scsi/scsi interface 2867 */ 2868 static int 2869 proc_rdrv(adapter_t *adapter, char *page, int start, int end ) 2870 { 2871 dma_addr_t dma_handle; 2872 logdrv_param *lparam; 2873 megacmd_t mc; 2874 char *disk_array; 2875 dma_addr_t disk_array_dma_handle; 2876 caddr_t inquiry; 2877 struct pci_dev *pdev; 2878 u8 *rdrv_state; 2879 int num_ldrv; 2880 u32 array_sz; 2881 int len = 0; 2882 int i; 2883 2884 if( make_local_pdev(adapter, &pdev) != 0 ) { 2885 return len; 2886 } 2887 2888 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2889 free_local_pdev(pdev); 2890 return len; 2891 } 2892 2893 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2894 2895 len = sprintf(page, "Adapter inquiry failed.\n"); 2896 2897 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2898 2899 mega_free_inquiry(inquiry, dma_handle, pdev); 2900 2901 free_local_pdev(pdev); 2902 2903 return len; 2904 } 2905 2906 memset(&mc, 0, sizeof(megacmd_t)); 2907 2908 if( adapter->flag & BOARD_40LD ) { 2909 array_sz = sizeof(disk_array_40ld); 2910 2911 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2912 2913 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2914 } 2915 else { 2916 array_sz = sizeof(disk_array_8ld); 2917 2918 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2919 raid_inq.logdrv_info.ldrv_state; 2920 2921 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2922 raid_inq.logdrv_info.num_ldrv; 2923 } 2924 2925 disk_array = pci_alloc_consistent(pdev, array_sz, 2926 &disk_array_dma_handle); 2927 2928 if( disk_array == NULL ) { 2929 len = sprintf(page, "memory not available.\n"); 2930 2931 mega_free_inquiry(inquiry, dma_handle, pdev); 2932 2933 free_local_pdev(pdev); 2934 2935 return len; 2936 } 2937 2938 mc.xferaddr = (u32)disk_array_dma_handle; 2939 2940 if( adapter->flag & BOARD_40LD ) { 2941 mc.cmd = FC_NEW_CONFIG; 2942 mc.opcode = OP_DCMD_READ_CONFIG; 2943 2944 if( mega_internal_command(adapter, &mc, NULL) ) { 2945 2946 len = sprintf(page, "40LD read config failed.\n"); 2947 2948 mega_free_inquiry(inquiry, dma_handle, pdev); 2949 2950 pci_free_consistent(pdev, array_sz, disk_array, 2951 disk_array_dma_handle); 2952 2953 free_local_pdev(pdev); 2954 2955 return len; 2956 } 2957 2958 } 2959 else { 2960 mc.cmd = NEW_READ_CONFIG_8LD; 2961 2962 if( mega_internal_command(adapter, &mc, NULL) ) { 2963 2964 mc.cmd = READ_CONFIG_8LD; 2965 2966 if( mega_internal_command(adapter, &mc, 2967 NULL) ){ 2968 2969 len = sprintf(page, 2970 "8LD read config failed.\n"); 2971 2972 mega_free_inquiry(inquiry, dma_handle, pdev); 2973 2974 pci_free_consistent(pdev, array_sz, 2975 disk_array, 2976 disk_array_dma_handle); 2977 2978 free_local_pdev(pdev); 2979 2980 return len; 2981 } 2982 } 2983 } 2984 2985 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 2986 2987 if( adapter->flag & BOARD_40LD ) { 2988 lparam = 2989 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 2990 } 2991 else { 2992 lparam = 2993 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 2994 } 2995 2996 /* 2997 * Check for overflow. We print less than 240 characters for 2998 * information about each logical drive. 2999 */ 3000 if( (len + 240) >= PAGE_SIZE ) break; 3001 3002 len += sprintf(page+len, "Logical drive:%2d:, ", i); 3003 3004 switch( rdrv_state[i] & 0x0F ) { 3005 case RDRV_OFFLINE: 3006 len += sprintf(page+len, "state: offline"); 3007 break; 3008 3009 case RDRV_DEGRADED: 3010 len += sprintf(page+len, "state: degraded"); 3011 break; 3012 3013 case RDRV_OPTIMAL: 3014 len += sprintf(page+len, "state: optimal"); 3015 break; 3016 3017 case RDRV_DELETED: 3018 len += sprintf(page+len, "state: deleted"); 3019 break; 3020 3021 default: 3022 len += sprintf(page+len, "state: unknown"); 3023 break; 3024 } 3025 3026 /* 3027 * Check if check consistency or initialization is going on 3028 * for this logical drive. 3029 */ 3030 if( (rdrv_state[i] & 0xF0) == 0x20 ) { 3031 len += sprintf(page+len, 3032 ", check-consistency in progress"); 3033 } 3034 else if( (rdrv_state[i] & 0xF0) == 0x10 ) { 3035 len += sprintf(page+len, 3036 ", initialization in progress"); 3037 } 3038 3039 len += sprintf(page+len, "\n"); 3040 3041 len += sprintf(page+len, "Span depth:%3d, ", 3042 lparam->span_depth); 3043 3044 len += sprintf(page+len, "RAID level:%3d, ", 3045 lparam->level); 3046 3047 len += sprintf(page+len, "Stripe size:%3d, ", 3048 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 3049 3050 len += sprintf(page+len, "Row size:%3d\n", 3051 lparam->row_size); 3052 3053 3054 len += sprintf(page+len, "Read Policy: "); 3055 3056 switch(lparam->read_ahead) { 3057 3058 case NO_READ_AHEAD: 3059 len += sprintf(page+len, "No read ahead, "); 3060 break; 3061 3062 case READ_AHEAD: 3063 len += sprintf(page+len, "Read ahead, "); 3064 break; 3065 3066 case ADAP_READ_AHEAD: 3067 len += sprintf(page+len, "Adaptive, "); 3068 break; 3069 3070 } 3071 3072 len += sprintf(page+len, "Write Policy: "); 3073 3074 switch(lparam->write_mode) { 3075 3076 case WRMODE_WRITE_THRU: 3077 len += sprintf(page+len, "Write thru, "); 3078 break; 3079 3080 case WRMODE_WRITE_BACK: 3081 len += sprintf(page+len, "Write back, "); 3082 break; 3083 } 3084 3085 len += sprintf(page+len, "Cache Policy: "); 3086 3087 switch(lparam->direct_io) { 3088 3089 case CACHED_IO: 3090 len += sprintf(page+len, "Cached IO\n\n"); 3091 break; 3092 3093 case DIRECT_IO: 3094 len += sprintf(page+len, "Direct IO\n\n"); 3095 break; 3096 } 3097 } 3098 3099 mega_free_inquiry(inquiry, dma_handle, pdev); 3100 3101 pci_free_consistent(pdev, array_sz, disk_array, 3102 disk_array_dma_handle); 3103 3104 free_local_pdev(pdev); 3105 3106 return len; 3107 } 3108 #else 3109 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 3110 { 3111 } 3112 #endif 3113 3114 3115 /** 3116 * megaraid_biosparam() 3117 * 3118 * Return the disk geometry for a particular disk 3119 */ 3120 static int 3121 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 3122 sector_t capacity, int geom[]) 3123 { 3124 adapter_t *adapter; 3125 unsigned char *bh; 3126 int heads; 3127 int sectors; 3128 int cylinders; 3129 int rval; 3130 3131 /* Get pointer to host config structure */ 3132 adapter = (adapter_t *)sdev->host->hostdata; 3133 3134 if (IS_RAID_CH(adapter, sdev->channel)) { 3135 /* Default heads (64) & sectors (32) */ 3136 heads = 64; 3137 sectors = 32; 3138 cylinders = (ulong)capacity / (heads * sectors); 3139 3140 /* 3141 * Handle extended translation size for logical drives 3142 * > 1Gb 3143 */ 3144 if ((ulong)capacity >= 0x200000) { 3145 heads = 255; 3146 sectors = 63; 3147 cylinders = (ulong)capacity / (heads * sectors); 3148 } 3149 3150 /* return result */ 3151 geom[0] = heads; 3152 geom[1] = sectors; 3153 geom[2] = cylinders; 3154 } 3155 else { 3156 bh = scsi_bios_ptable(bdev); 3157 3158 if( bh ) { 3159 rval = scsi_partsize(bh, capacity, 3160 &geom[2], &geom[0], &geom[1]); 3161 kfree(bh); 3162 if( rval != -1 ) 3163 return rval; 3164 } 3165 3166 printk(KERN_INFO 3167 "megaraid: invalid partition on this disk on channel %d\n", 3168 sdev->channel); 3169 3170 /* Default heads (64) & sectors (32) */ 3171 heads = 64; 3172 sectors = 32; 3173 cylinders = (ulong)capacity / (heads * sectors); 3174 3175 /* Handle extended translation size for logical drives > 1Gb */ 3176 if ((ulong)capacity >= 0x200000) { 3177 heads = 255; 3178 sectors = 63; 3179 cylinders = (ulong)capacity / (heads * sectors); 3180 } 3181 3182 /* return result */ 3183 geom[0] = heads; 3184 geom[1] = sectors; 3185 geom[2] = cylinders; 3186 } 3187 3188 return 0; 3189 } 3190 3191 /** 3192 * mega_init_scb() 3193 * @adapter - pointer to our soft state 3194 * 3195 * Allocate memory for the various pointers in the scb structures: 3196 * scatter-gather list pointer, passthru and extended passthru structure 3197 * pointers. 3198 */ 3199 static int 3200 mega_init_scb(adapter_t *adapter) 3201 { 3202 scb_t *scb; 3203 int i; 3204 3205 for( i = 0; i < adapter->max_cmds; i++ ) { 3206 3207 scb = &adapter->scb_list[i]; 3208 3209 scb->sgl64 = NULL; 3210 scb->sgl = NULL; 3211 scb->pthru = NULL; 3212 scb->epthru = NULL; 3213 } 3214 3215 for( i = 0; i < adapter->max_cmds; i++ ) { 3216 3217 scb = &adapter->scb_list[i]; 3218 3219 scb->idx = i; 3220 3221 scb->sgl64 = pci_alloc_consistent(adapter->dev, 3222 sizeof(mega_sgl64) * adapter->sglen, 3223 &scb->sgl_dma_addr); 3224 3225 scb->sgl = (mega_sglist *)scb->sgl64; 3226 3227 if( !scb->sgl ) { 3228 printk(KERN_WARNING "RAID: Can't allocate sglist.\n"); 3229 mega_free_sgl(adapter); 3230 return -1; 3231 } 3232 3233 scb->pthru = pci_alloc_consistent(adapter->dev, 3234 sizeof(mega_passthru), 3235 &scb->pthru_dma_addr); 3236 3237 if( !scb->pthru ) { 3238 printk(KERN_WARNING "RAID: Can't allocate passthru.\n"); 3239 mega_free_sgl(adapter); 3240 return -1; 3241 } 3242 3243 scb->epthru = pci_alloc_consistent(adapter->dev, 3244 sizeof(mega_ext_passthru), 3245 &scb->epthru_dma_addr); 3246 3247 if( !scb->epthru ) { 3248 printk(KERN_WARNING 3249 "Can't allocate extended passthru.\n"); 3250 mega_free_sgl(adapter); 3251 return -1; 3252 } 3253 3254 3255 scb->dma_type = MEGA_DMA_TYPE_NONE; 3256 3257 /* 3258 * Link to free list 3259 * lock not required since we are loading the driver, so no 3260 * commands possible right now. 3261 */ 3262 scb->state = SCB_FREE; 3263 scb->cmd = NULL; 3264 list_add(&scb->list, &adapter->free_list); 3265 } 3266 3267 return 0; 3268 } 3269 3270 3271 /** 3272 * megadev_open() 3273 * @inode - unused 3274 * @filep - unused 3275 * 3276 * Routines for the character/ioctl interface to the driver. Find out if this 3277 * is a valid open. If yes, increment the module use count so that it cannot 3278 * be unloaded. 3279 */ 3280 static int 3281 megadev_open (struct inode *inode, struct file *filep) 3282 { 3283 /* 3284 * Only allow superuser to access private ioctl interface 3285 */ 3286 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 3287 3288 return 0; 3289 } 3290 3291 3292 /** 3293 * megadev_ioctl() 3294 * @inode - Our device inode 3295 * @filep - unused 3296 * @cmd - ioctl command 3297 * @arg - user buffer 3298 * 3299 * ioctl entry point for our private ioctl interface. We move the data in from 3300 * the user space, prepare the command (if necessary, convert the old MIMD 3301 * ioctl to new ioctl command), and issue a synchronous command to the 3302 * controller. 3303 */ 3304 static int 3305 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, 3306 unsigned long arg) 3307 { 3308 adapter_t *adapter; 3309 nitioctl_t uioc; 3310 int adapno; 3311 int rval; 3312 mega_passthru __user *upthru; /* user address for passthru */ 3313 mega_passthru *pthru; /* copy user passthru here */ 3314 dma_addr_t pthru_dma_hndl; 3315 void *data = NULL; /* data to be transferred */ 3316 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 3317 megacmd_t mc; 3318 megastat_t __user *ustats; 3319 int num_ldrv; 3320 u32 uxferaddr = 0; 3321 struct pci_dev *pdev; 3322 3323 ustats = NULL; /* avoid compilation warnings */ 3324 num_ldrv = 0; 3325 3326 /* 3327 * Make sure only USCSICMD are issued through this interface. 3328 * MIMD application would still fire different command. 3329 */ 3330 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 3331 return -EINVAL; 3332 } 3333 3334 /* 3335 * Check and convert a possible MIMD command to NIT command. 3336 * mega_m_to_n() copies the data from the user space, so we do not 3337 * have to do it here. 3338 * NOTE: We will need some user address to copyout the data, therefore 3339 * the inteface layer will also provide us with the required user 3340 * addresses. 3341 */ 3342 memset(&uioc, 0, sizeof(nitioctl_t)); 3343 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3344 return rval; 3345 3346 3347 switch( uioc.opcode ) { 3348 3349 case GET_DRIVER_VER: 3350 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3351 return (-EFAULT); 3352 3353 break; 3354 3355 case GET_N_ADAP: 3356 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3357 return (-EFAULT); 3358 3359 /* 3360 * Shucks. MIMD interface returns a positive value for number 3361 * of adapters. TODO: Change it to return 0 when there is no 3362 * applicatio using mimd interface. 3363 */ 3364 return hba_count; 3365 3366 case GET_ADAP_INFO: 3367 3368 /* 3369 * Which adapter 3370 */ 3371 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3372 return (-ENODEV); 3373 3374 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3375 sizeof(struct mcontroller)) ) 3376 return (-EFAULT); 3377 break; 3378 3379 #if MEGA_HAVE_STATS 3380 3381 case GET_STATS: 3382 /* 3383 * Which adapter 3384 */ 3385 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3386 return (-ENODEV); 3387 3388 adapter = hba_soft_state[adapno]; 3389 3390 ustats = uioc.uioc_uaddr; 3391 3392 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3393 return (-EFAULT); 3394 3395 /* 3396 * Check for the validity of the logical drive number 3397 */ 3398 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3399 3400 if( copy_to_user(ustats->nreads, adapter->nreads, 3401 num_ldrv*sizeof(u32)) ) 3402 return -EFAULT; 3403 3404 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3405 num_ldrv*sizeof(u32)) ) 3406 return -EFAULT; 3407 3408 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3409 num_ldrv*sizeof(u32)) ) 3410 return -EFAULT; 3411 3412 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3413 num_ldrv*sizeof(u32)) ) 3414 return -EFAULT; 3415 3416 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3417 num_ldrv*sizeof(u32)) ) 3418 return -EFAULT; 3419 3420 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3421 num_ldrv*sizeof(u32)) ) 3422 return -EFAULT; 3423 3424 return 0; 3425 3426 #endif 3427 case MBOX_CMD: 3428 3429 /* 3430 * Which adapter 3431 */ 3432 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3433 return (-ENODEV); 3434 3435 adapter = hba_soft_state[adapno]; 3436 3437 /* 3438 * Deletion of logical drive is a special case. The adapter 3439 * should be quiescent before this command is issued. 3440 */ 3441 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3442 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3443 3444 /* 3445 * Do we support this feature 3446 */ 3447 if( !adapter->support_random_del ) { 3448 printk(KERN_WARNING "megaraid: logdrv "); 3449 printk("delete on non-supporting F/W.\n"); 3450 3451 return (-EINVAL); 3452 } 3453 3454 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3455 3456 if( rval == 0 ) { 3457 memset(&mc, 0, sizeof(megacmd_t)); 3458 3459 mc.status = rval; 3460 3461 rval = mega_n_to_m((void __user *)arg, &mc); 3462 } 3463 3464 return rval; 3465 } 3466 /* 3467 * This interface only support the regular passthru commands. 3468 * Reject extended passthru and 64-bit passthru 3469 */ 3470 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3471 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3472 3473 printk(KERN_WARNING "megaraid: rejected passthru.\n"); 3474 3475 return (-EINVAL); 3476 } 3477 3478 /* 3479 * For all internal commands, the buffer must be allocated in 3480 * <4GB address range 3481 */ 3482 if( make_local_pdev(adapter, &pdev) != 0 ) 3483 return -EIO; 3484 3485 /* Is it a passthru command or a DCMD */ 3486 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3487 /* Passthru commands */ 3488 3489 pthru = pci_alloc_consistent(pdev, 3490 sizeof(mega_passthru), 3491 &pthru_dma_hndl); 3492 3493 if( pthru == NULL ) { 3494 free_local_pdev(pdev); 3495 return (-ENOMEM); 3496 } 3497 3498 /* 3499 * The user passthru structure 3500 */ 3501 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; 3502 3503 /* 3504 * Copy in the user passthru here. 3505 */ 3506 if( copy_from_user(pthru, upthru, 3507 sizeof(mega_passthru)) ) { 3508 3509 pci_free_consistent(pdev, 3510 sizeof(mega_passthru), pthru, 3511 pthru_dma_hndl); 3512 3513 free_local_pdev(pdev); 3514 3515 return (-EFAULT); 3516 } 3517 3518 /* 3519 * Is there a data transfer 3520 */ 3521 if( pthru->dataxferlen ) { 3522 data = pci_alloc_consistent(pdev, 3523 pthru->dataxferlen, 3524 &data_dma_hndl); 3525 3526 if( data == NULL ) { 3527 pci_free_consistent(pdev, 3528 sizeof(mega_passthru), 3529 pthru, 3530 pthru_dma_hndl); 3531 3532 free_local_pdev(pdev); 3533 3534 return (-ENOMEM); 3535 } 3536 3537 /* 3538 * Save the user address and point the kernel 3539 * address at just allocated memory 3540 */ 3541 uxferaddr = pthru->dataxferaddr; 3542 pthru->dataxferaddr = data_dma_hndl; 3543 } 3544 3545 3546 /* 3547 * Is data coming down-stream 3548 */ 3549 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3550 /* 3551 * Get the user data 3552 */ 3553 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3554 pthru->dataxferlen) ) { 3555 rval = (-EFAULT); 3556 goto freemem_and_return; 3557 } 3558 } 3559 3560 memset(&mc, 0, sizeof(megacmd_t)); 3561 3562 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3563 mc.xferaddr = (u32)pthru_dma_hndl; 3564 3565 /* 3566 * Issue the command 3567 */ 3568 mega_internal_command(adapter, &mc, pthru); 3569 3570 rval = mega_n_to_m((void __user *)arg, &mc); 3571 3572 if( rval ) goto freemem_and_return; 3573 3574 3575 /* 3576 * Is data going up-stream 3577 */ 3578 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3579 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3580 pthru->dataxferlen) ) { 3581 rval = (-EFAULT); 3582 } 3583 } 3584 3585 /* 3586 * Send the request sense data also, irrespective of 3587 * whether the user has asked for it or not. 3588 */ 3589 if (copy_to_user(upthru->reqsensearea, 3590 pthru->reqsensearea, 14)) 3591 rval = -EFAULT; 3592 3593 freemem_and_return: 3594 if( pthru->dataxferlen ) { 3595 pci_free_consistent(pdev, 3596 pthru->dataxferlen, data, 3597 data_dma_hndl); 3598 } 3599 3600 pci_free_consistent(pdev, sizeof(mega_passthru), 3601 pthru, pthru_dma_hndl); 3602 3603 free_local_pdev(pdev); 3604 3605 return rval; 3606 } 3607 else { 3608 /* DCMD commands */ 3609 3610 /* 3611 * Is there a data transfer 3612 */ 3613 if( uioc.xferlen ) { 3614 data = pci_alloc_consistent(pdev, 3615 uioc.xferlen, &data_dma_hndl); 3616 3617 if( data == NULL ) { 3618 free_local_pdev(pdev); 3619 return (-ENOMEM); 3620 } 3621 3622 uxferaddr = MBOX(uioc)->xferaddr; 3623 } 3624 3625 /* 3626 * Is data coming down-stream 3627 */ 3628 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3629 /* 3630 * Get the user data 3631 */ 3632 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3633 uioc.xferlen) ) { 3634 3635 pci_free_consistent(pdev, 3636 uioc.xferlen, 3637 data, data_dma_hndl); 3638 3639 free_local_pdev(pdev); 3640 3641 return (-EFAULT); 3642 } 3643 } 3644 3645 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3646 3647 mc.xferaddr = (u32)data_dma_hndl; 3648 3649 /* 3650 * Issue the command 3651 */ 3652 mega_internal_command(adapter, &mc, NULL); 3653 3654 rval = mega_n_to_m((void __user *)arg, &mc); 3655 3656 if( rval ) { 3657 if( uioc.xferlen ) { 3658 pci_free_consistent(pdev, 3659 uioc.xferlen, data, 3660 data_dma_hndl); 3661 } 3662 3663 free_local_pdev(pdev); 3664 3665 return rval; 3666 } 3667 3668 /* 3669 * Is data going up-stream 3670 */ 3671 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3672 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3673 uioc.xferlen) ) { 3674 3675 rval = (-EFAULT); 3676 } 3677 } 3678 3679 if( uioc.xferlen ) { 3680 pci_free_consistent(pdev, 3681 uioc.xferlen, data, 3682 data_dma_hndl); 3683 } 3684 3685 free_local_pdev(pdev); 3686 3687 return rval; 3688 } 3689 3690 default: 3691 return (-EINVAL); 3692 } 3693 3694 return 0; 3695 } 3696 3697 /** 3698 * mega_m_to_n() 3699 * @arg - user address 3700 * @uioc - new ioctl structure 3701 * 3702 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3703 * structure 3704 * 3705 * Converts the older mimd ioctl structure to newer NIT structure 3706 */ 3707 static int 3708 mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3709 { 3710 struct uioctl_t uioc_mimd; 3711 char signature[8] = {0}; 3712 u8 opcode; 3713 u8 subopcode; 3714 3715 3716 /* 3717 * check is the application conforms to NIT. We do not have to do much 3718 * in that case. 3719 * We exploit the fact that the signature is stored in the very 3720 * begining of the structure. 3721 */ 3722 3723 if( copy_from_user(signature, arg, 7) ) 3724 return (-EFAULT); 3725 3726 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3727 3728 /* 3729 * NOTE NOTE: The nit ioctl is still under flux because of 3730 * change of mailbox definition, in HPE. No applications yet 3731 * use this interface and let's not have applications use this 3732 * interface till the new specifitions are in place. 3733 */ 3734 return -EINVAL; 3735 #if 0 3736 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3737 return (-EFAULT); 3738 return 0; 3739 #endif 3740 } 3741 3742 /* 3743 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3744 * 3745 * Get the user ioctl structure 3746 */ 3747 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3748 return (-EFAULT); 3749 3750 3751 /* 3752 * Get the opcode and subopcode for the commands 3753 */ 3754 opcode = uioc_mimd.ui.fcs.opcode; 3755 subopcode = uioc_mimd.ui.fcs.subopcode; 3756 3757 switch (opcode) { 3758 case 0x82: 3759 3760 switch (subopcode) { 3761 3762 case MEGAIOC_QDRVRVER: /* Query driver version */ 3763 uioc->opcode = GET_DRIVER_VER; 3764 uioc->uioc_uaddr = uioc_mimd.data; 3765 break; 3766 3767 case MEGAIOC_QNADAP: /* Get # of adapters */ 3768 uioc->opcode = GET_N_ADAP; 3769 uioc->uioc_uaddr = uioc_mimd.data; 3770 break; 3771 3772 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3773 uioc->opcode = GET_ADAP_INFO; 3774 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3775 uioc->uioc_uaddr = uioc_mimd.data; 3776 break; 3777 3778 default: 3779 return(-EINVAL); 3780 } 3781 3782 break; 3783 3784 3785 case 0x81: 3786 3787 uioc->opcode = MBOX_CMD; 3788 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3789 3790 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3791 3792 uioc->xferlen = uioc_mimd.ui.fcs.length; 3793 3794 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3795 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3796 3797 break; 3798 3799 case 0x80: 3800 3801 uioc->opcode = MBOX_CMD; 3802 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3803 3804 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3805 3806 /* 3807 * Choose the xferlen bigger of input and output data 3808 */ 3809 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3810 uioc_mimd.outlen : uioc_mimd.inlen; 3811 3812 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3813 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3814 3815 break; 3816 3817 default: 3818 return (-EINVAL); 3819 3820 } 3821 3822 return 0; 3823 } 3824 3825 /* 3826 * mega_n_to_m() 3827 * @arg - user address 3828 * @mc - mailbox command 3829 * 3830 * Updates the status information to the application, depending on application 3831 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3832 */ 3833 static int 3834 mega_n_to_m(void __user *arg, megacmd_t *mc) 3835 { 3836 nitioctl_t __user *uiocp; 3837 megacmd_t __user *umc; 3838 mega_passthru __user *upthru; 3839 struct uioctl_t __user *uioc_mimd; 3840 char signature[8] = {0}; 3841 3842 /* 3843 * check is the application conforms to NIT. 3844 */ 3845 if( copy_from_user(signature, arg, 7) ) 3846 return -EFAULT; 3847 3848 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3849 3850 uiocp = arg; 3851 3852 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3853 return (-EFAULT); 3854 3855 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3856 3857 umc = MBOX_P(uiocp); 3858 3859 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3860 return -EFAULT; 3861 3862 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3863 return (-EFAULT); 3864 } 3865 } 3866 else { 3867 uioc_mimd = arg; 3868 3869 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3870 return (-EFAULT); 3871 3872 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3873 3874 umc = (megacmd_t __user *)uioc_mimd->mbox; 3875 3876 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3877 return (-EFAULT); 3878 3879 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3880 return (-EFAULT); 3881 } 3882 } 3883 3884 return 0; 3885 } 3886 3887 3888 /* 3889 * MEGARAID 'FW' commands. 3890 */ 3891 3892 /** 3893 * mega_is_bios_enabled() 3894 * @adapter - pointer to our soft state 3895 * 3896 * issue command to find out if the BIOS is enabled for this controller 3897 */ 3898 static int 3899 mega_is_bios_enabled(adapter_t *adapter) 3900 { 3901 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3902 mbox_t *mbox; 3903 int ret; 3904 3905 mbox = (mbox_t *)raw_mbox; 3906 3907 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3908 3909 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3910 3911 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3912 3913 raw_mbox[0] = IS_BIOS_ENABLED; 3914 raw_mbox[2] = GET_BIOS; 3915 3916 3917 ret = issue_scb_block(adapter, raw_mbox); 3918 3919 return *(char *)adapter->mega_buffer; 3920 } 3921 3922 3923 /** 3924 * mega_enum_raid_scsi() 3925 * @adapter - pointer to our soft state 3926 * 3927 * Find out what channels are RAID/SCSI. This information is used to 3928 * differentiate the virtual channels and physical channels and to support 3929 * ROMB feature and non-disk devices. 3930 */ 3931 static void 3932 mega_enum_raid_scsi(adapter_t *adapter) 3933 { 3934 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3935 mbox_t *mbox; 3936 int i; 3937 3938 mbox = (mbox_t *)raw_mbox; 3939 3940 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3941 3942 /* 3943 * issue command to find out what channels are raid/scsi 3944 */ 3945 raw_mbox[0] = CHNL_CLASS; 3946 raw_mbox[2] = GET_CHNL_CLASS; 3947 3948 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3949 3950 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3951 3952 /* 3953 * Non-ROMB firmware fail this command, so all channels 3954 * must be shown RAID 3955 */ 3956 adapter->mega_ch_class = 0xFF; 3957 3958 if(!issue_scb_block(adapter, raw_mbox)) { 3959 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 3960 3961 } 3962 3963 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3964 if( (adapter->mega_ch_class >> i) & 0x01 ) { 3965 printk(KERN_INFO "megaraid: channel[%d] is raid.\n", 3966 i); 3967 } 3968 else { 3969 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n", 3970 i); 3971 } 3972 } 3973 3974 return; 3975 } 3976 3977 3978 /** 3979 * mega_get_boot_drv() 3980 * @adapter - pointer to our soft state 3981 * 3982 * Find out which device is the boot device. Note, any logical drive or any 3983 * phyical device (e.g., a CDROM) can be designated as a boot device. 3984 */ 3985 static void 3986 mega_get_boot_drv(adapter_t *adapter) 3987 { 3988 struct private_bios_data *prv_bios_data; 3989 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3990 mbox_t *mbox; 3991 u16 cksum = 0; 3992 u8 *cksum_p; 3993 u8 boot_pdrv; 3994 int i; 3995 3996 mbox = (mbox_t *)raw_mbox; 3997 3998 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3999 4000 raw_mbox[0] = BIOS_PVT_DATA; 4001 raw_mbox[2] = GET_BIOS_PVT_DATA; 4002 4003 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4004 4005 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4006 4007 adapter->boot_ldrv_enabled = 0; 4008 adapter->boot_ldrv = 0; 4009 4010 adapter->boot_pdrv_enabled = 0; 4011 adapter->boot_pdrv_ch = 0; 4012 adapter->boot_pdrv_tgt = 0; 4013 4014 if(issue_scb_block(adapter, raw_mbox) == 0) { 4015 prv_bios_data = 4016 (struct private_bios_data *)adapter->mega_buffer; 4017 4018 cksum = 0; 4019 cksum_p = (char *)prv_bios_data; 4020 for (i = 0; i < 14; i++ ) { 4021 cksum += (u16)(*cksum_p++); 4022 } 4023 4024 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 4025 4026 /* 4027 * If MSB is set, a physical drive is set as boot 4028 * device 4029 */ 4030 if( prv_bios_data->boot_drv & 0x80 ) { 4031 adapter->boot_pdrv_enabled = 1; 4032 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 4033 adapter->boot_pdrv_ch = boot_pdrv / 16; 4034 adapter->boot_pdrv_tgt = boot_pdrv % 16; 4035 } 4036 else { 4037 adapter->boot_ldrv_enabled = 1; 4038 adapter->boot_ldrv = prv_bios_data->boot_drv; 4039 } 4040 } 4041 } 4042 4043 } 4044 4045 /** 4046 * mega_support_random_del() 4047 * @adapter - pointer to our soft state 4048 * 4049 * Find out if this controller supports random deletion and addition of 4050 * logical drives 4051 */ 4052 static int 4053 mega_support_random_del(adapter_t *adapter) 4054 { 4055 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4056 mbox_t *mbox; 4057 int rval; 4058 4059 mbox = (mbox_t *)raw_mbox; 4060 4061 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4062 4063 /* 4064 * issue command 4065 */ 4066 raw_mbox[0] = FC_DEL_LOGDRV; 4067 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 4068 4069 rval = issue_scb_block(adapter, raw_mbox); 4070 4071 return !rval; 4072 } 4073 4074 4075 /** 4076 * mega_support_ext_cdb() 4077 * @adapter - pointer to our soft state 4078 * 4079 * Find out if this firmware support cdblen > 10 4080 */ 4081 static int 4082 mega_support_ext_cdb(adapter_t *adapter) 4083 { 4084 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4085 mbox_t *mbox; 4086 int rval; 4087 4088 mbox = (mbox_t *)raw_mbox; 4089 4090 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4091 /* 4092 * issue command to find out if controller supports extended CDBs. 4093 */ 4094 raw_mbox[0] = 0xA4; 4095 raw_mbox[2] = 0x16; 4096 4097 rval = issue_scb_block(adapter, raw_mbox); 4098 4099 return !rval; 4100 } 4101 4102 4103 /** 4104 * mega_del_logdrv() 4105 * @adapter - pointer to our soft state 4106 * @logdrv - logical drive to be deleted 4107 * 4108 * Delete the specified logical drive. It is the responsibility of the user 4109 * app to let the OS know about this operation. 4110 */ 4111 static int 4112 mega_del_logdrv(adapter_t *adapter, int logdrv) 4113 { 4114 unsigned long flags; 4115 scb_t *scb; 4116 int rval; 4117 4118 /* 4119 * Stop sending commands to the controller, queue them internally. 4120 * When deletion is complete, ISR will flush the queue. 4121 */ 4122 atomic_set(&adapter->quiescent, 1); 4123 4124 /* 4125 * Wait till all the issued commands are complete and there are no 4126 * commands in the pending queue 4127 */ 4128 while (atomic_read(&adapter->pend_cmds) > 0 || 4129 !list_empty(&adapter->pending_list)) 4130 msleep(1000); /* sleep for 1s */ 4131 4132 rval = mega_do_del_logdrv(adapter, logdrv); 4133 4134 spin_lock_irqsave(&adapter->lock, flags); 4135 4136 /* 4137 * If delete operation was successful, add 0x80 to the logical drive 4138 * ids for commands in the pending queue. 4139 */ 4140 if (adapter->read_ldidmap) { 4141 struct list_head *pos; 4142 list_for_each(pos, &adapter->pending_list) { 4143 scb = list_entry(pos, scb_t, list); 4144 if (scb->pthru->logdrv < 0x80 ) 4145 scb->pthru->logdrv += 0x80; 4146 } 4147 } 4148 4149 atomic_set(&adapter->quiescent, 0); 4150 4151 mega_runpendq(adapter); 4152 4153 spin_unlock_irqrestore(&adapter->lock, flags); 4154 4155 return rval; 4156 } 4157 4158 4159 static int 4160 mega_do_del_logdrv(adapter_t *adapter, int logdrv) 4161 { 4162 megacmd_t mc; 4163 int rval; 4164 4165 memset( &mc, 0, sizeof(megacmd_t)); 4166 4167 mc.cmd = FC_DEL_LOGDRV; 4168 mc.opcode = OP_DEL_LOGDRV; 4169 mc.subopcode = logdrv; 4170 4171 rval = mega_internal_command(adapter, &mc, NULL); 4172 4173 /* log this event */ 4174 if(rval) { 4175 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv); 4176 return rval; 4177 } 4178 4179 /* 4180 * After deleting first logical drive, the logical drives must be 4181 * addressed by adding 0x80 to the logical drive id. 4182 */ 4183 adapter->read_ldidmap = 1; 4184 4185 return rval; 4186 } 4187 4188 4189 /** 4190 * mega_get_max_sgl() 4191 * @adapter - pointer to our soft state 4192 * 4193 * Find out the maximum number of scatter-gather elements supported by this 4194 * version of the firmware 4195 */ 4196 static void 4197 mega_get_max_sgl(adapter_t *adapter) 4198 { 4199 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4200 mbox_t *mbox; 4201 4202 mbox = (mbox_t *)raw_mbox; 4203 4204 memset(mbox, 0, sizeof(raw_mbox)); 4205 4206 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4207 4208 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4209 4210 raw_mbox[0] = MAIN_MISC_OPCODE; 4211 raw_mbox[2] = GET_MAX_SG_SUPPORT; 4212 4213 4214 if( issue_scb_block(adapter, raw_mbox) ) { 4215 /* 4216 * f/w does not support this command. Choose the default value 4217 */ 4218 adapter->sglen = MIN_SGLIST; 4219 } 4220 else { 4221 adapter->sglen = *((char *)adapter->mega_buffer); 4222 4223 /* 4224 * Make sure this is not more than the resources we are 4225 * planning to allocate 4226 */ 4227 if ( adapter->sglen > MAX_SGLIST ) 4228 adapter->sglen = MAX_SGLIST; 4229 } 4230 4231 return; 4232 } 4233 4234 4235 /** 4236 * mega_support_cluster() 4237 * @adapter - pointer to our soft state 4238 * 4239 * Find out if this firmware support cluster calls. 4240 */ 4241 static int 4242 mega_support_cluster(adapter_t *adapter) 4243 { 4244 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4245 mbox_t *mbox; 4246 4247 mbox = (mbox_t *)raw_mbox; 4248 4249 memset(mbox, 0, sizeof(raw_mbox)); 4250 4251 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4252 4253 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4254 4255 /* 4256 * Try to get the initiator id. This command will succeed iff the 4257 * clustering is available on this HBA. 4258 */ 4259 raw_mbox[0] = MEGA_GET_TARGET_ID; 4260 4261 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 4262 4263 /* 4264 * Cluster support available. Get the initiator target id. 4265 * Tell our id to mid-layer too. 4266 */ 4267 adapter->this_id = *(u32 *)adapter->mega_buffer; 4268 adapter->host->this_id = adapter->this_id; 4269 4270 return 1; 4271 } 4272 4273 return 0; 4274 } 4275 4276 #ifdef CONFIG_PROC_FS 4277 /** 4278 * mega_adapinq() 4279 * @adapter - pointer to our soft state 4280 * @dma_handle - DMA address of the buffer 4281 * 4282 * Issue internal comamnds while interrupts are available. 4283 * We only issue direct mailbox commands from within the driver. ioctl() 4284 * interface using these routines can issue passthru commands. 4285 */ 4286 static int 4287 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 4288 { 4289 megacmd_t mc; 4290 4291 memset(&mc, 0, sizeof(megacmd_t)); 4292 4293 if( adapter->flag & BOARD_40LD ) { 4294 mc.cmd = FC_NEW_CONFIG; 4295 mc.opcode = NC_SUBOP_ENQUIRY3; 4296 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 4297 } 4298 else { 4299 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 4300 } 4301 4302 mc.xferaddr = (u32)dma_handle; 4303 4304 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 4305 return -1; 4306 } 4307 4308 return 0; 4309 } 4310 4311 4312 /** mega_internal_dev_inquiry() 4313 * @adapter - pointer to our soft state 4314 * @ch - channel for this device 4315 * @tgt - ID of this device 4316 * @buf_dma_handle - DMA address of the buffer 4317 * 4318 * Issue the scsi inquiry for the specified device. 4319 */ 4320 static int 4321 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4322 dma_addr_t buf_dma_handle) 4323 { 4324 mega_passthru *pthru; 4325 dma_addr_t pthru_dma_handle; 4326 megacmd_t mc; 4327 int rval; 4328 struct pci_dev *pdev; 4329 4330 4331 /* 4332 * For all internal commands, the buffer must be allocated in <4GB 4333 * address range 4334 */ 4335 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4336 4337 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4338 &pthru_dma_handle); 4339 4340 if( pthru == NULL ) { 4341 free_local_pdev(pdev); 4342 return -1; 4343 } 4344 4345 pthru->timeout = 2; 4346 pthru->ars = 1; 4347 pthru->reqsenselen = 14; 4348 pthru->islogical = 0; 4349 4350 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4351 4352 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4353 4354 pthru->cdblen = 6; 4355 4356 pthru->cdb[0] = INQUIRY; 4357 pthru->cdb[1] = 0; 4358 pthru->cdb[2] = 0; 4359 pthru->cdb[3] = 0; 4360 pthru->cdb[4] = 255; 4361 pthru->cdb[5] = 0; 4362 4363 4364 pthru->dataxferaddr = (u32)buf_dma_handle; 4365 pthru->dataxferlen = 256; 4366 4367 memset(&mc, 0, sizeof(megacmd_t)); 4368 4369 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4370 mc.xferaddr = (u32)pthru_dma_handle; 4371 4372 rval = mega_internal_command(adapter, &mc, pthru); 4373 4374 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4375 pthru_dma_handle); 4376 4377 free_local_pdev(pdev); 4378 4379 return rval; 4380 } 4381 #endif 4382 4383 /** 4384 * mega_internal_command() 4385 * @adapter - pointer to our soft state 4386 * @mc - the mailbox command 4387 * @pthru - Passthru structure for DCDB commands 4388 * 4389 * Issue the internal commands in interrupt mode. 4390 * The last argument is the address of the passthru structure if the command 4391 * to be fired is a passthru command 4392 * 4393 * lockscope specifies whether the caller has already acquired the lock. Of 4394 * course, the caller must know which lock we are talking about. 4395 * 4396 * Note: parameter 'pthru' is null for non-passthru commands. 4397 */ 4398 static int 4399 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4400 { 4401 Scsi_Cmnd *scmd; 4402 struct scsi_device *sdev; 4403 scb_t *scb; 4404 int rval; 4405 4406 /* 4407 * The internal commands share one command id and hence are 4408 * serialized. This is so because we want to reserve maximum number of 4409 * available command ids for the I/O commands. 4410 */ 4411 mutex_lock(&adapter->int_mtx); 4412 4413 scb = &adapter->int_scb; 4414 memset(scb, 0, sizeof(scb_t)); 4415 4416 scmd = &adapter->int_scmd; 4417 memset(scmd, 0, sizeof(Scsi_Cmnd)); 4418 4419 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL); 4420 memset(sdev, 0, sizeof(struct scsi_device)); 4421 scmd->device = sdev; 4422 4423 scmd->device->host = adapter->host; 4424 scmd->host_scribble = (void *)scb; 4425 scmd->cmnd[0] = MEGA_INTERNAL_CMD; 4426 4427 scb->state |= SCB_ACTIVE; 4428 scb->cmd = scmd; 4429 4430 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4431 4432 /* 4433 * Is it a passthru command 4434 */ 4435 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 4436 4437 scb->pthru = pthru; 4438 } 4439 4440 scb->idx = CMDID_INT_CMDS; 4441 4442 megaraid_queue(scmd, mega_internal_done); 4443 4444 wait_for_completion(&adapter->int_waitq); 4445 4446 rval = scmd->result; 4447 mc->status = scmd->result; 4448 kfree(sdev); 4449 4450 /* 4451 * Print a debug message for all failed commands. Applications can use 4452 * this information. 4453 */ 4454 if( scmd->result && trace_level ) { 4455 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", 4456 mc->cmd, mc->opcode, mc->subopcode, scmd->result); 4457 } 4458 4459 mutex_unlock(&adapter->int_mtx); 4460 4461 return rval; 4462 } 4463 4464 4465 /** 4466 * mega_internal_done() 4467 * @scmd - internal scsi command 4468 * 4469 * Callback routine for internal commands. 4470 */ 4471 static void 4472 mega_internal_done(Scsi_Cmnd *scmd) 4473 { 4474 adapter_t *adapter; 4475 4476 adapter = (adapter_t *)scmd->device->host->hostdata; 4477 4478 complete(&adapter->int_waitq); 4479 4480 } 4481 4482 4483 static struct scsi_host_template megaraid_template = { 4484 .module = THIS_MODULE, 4485 .name = "MegaRAID", 4486 .proc_name = "megaraid_legacy", 4487 .info = megaraid_info, 4488 .queuecommand = megaraid_queue, 4489 .bios_param = megaraid_biosparam, 4490 .max_sectors = MAX_SECTORS_PER_IO, 4491 .can_queue = MAX_COMMANDS, 4492 .this_id = DEFAULT_INITIATOR_ID, 4493 .sg_tablesize = MAX_SGLIST, 4494 .cmd_per_lun = DEF_CMD_PER_LUN, 4495 .use_clustering = ENABLE_CLUSTERING, 4496 .eh_abort_handler = megaraid_abort, 4497 .eh_device_reset_handler = megaraid_reset, 4498 .eh_bus_reset_handler = megaraid_reset, 4499 .eh_host_reset_handler = megaraid_reset, 4500 }; 4501 4502 static int __devinit 4503 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4504 { 4505 struct Scsi_Host *host; 4506 adapter_t *adapter; 4507 unsigned long mega_baseport, tbase, flag = 0; 4508 u16 subsysid, subsysvid; 4509 u8 pci_bus, pci_dev_func; 4510 int irq, i, j; 4511 int error = -ENODEV; 4512 4513 if (pci_enable_device(pdev)) 4514 goto out; 4515 pci_set_master(pdev); 4516 4517 pci_bus = pdev->bus->number; 4518 pci_dev_func = pdev->devfn; 4519 4520 /* 4521 * The megaraid3 stuff reports the ID of the Intel part which is not 4522 * remotely specific to the megaraid 4523 */ 4524 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4525 u16 magic; 4526 /* 4527 * Don't fall over the Compaq management cards using the same 4528 * PCI identifier 4529 */ 4530 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4531 pdev->subsystem_device == 0xC000) 4532 return -ENODEV; 4533 /* Now check the magic signature byte */ 4534 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4535 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4536 return -ENODEV; 4537 /* Ok it is probably a megaraid */ 4538 } 4539 4540 /* 4541 * For these vendor and device ids, signature offsets are not 4542 * valid and 64 bit is implicit 4543 */ 4544 if (id->driver_data & BOARD_64BIT) 4545 flag |= BOARD_64BIT; 4546 else { 4547 u32 magic64; 4548 4549 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4550 if (magic64 == HBA_SIGNATURE_64BIT) 4551 flag |= BOARD_64BIT; 4552 } 4553 4554 subsysvid = pdev->subsystem_vendor; 4555 subsysid = pdev->subsystem_device; 4556 4557 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:", 4558 id->vendor, id->device, pci_bus); 4559 4560 printk("slot %d:func %d\n", 4561 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func)); 4562 4563 /* Read the base port and IRQ from PCI */ 4564 mega_baseport = pci_resource_start(pdev, 0); 4565 irq = pdev->irq; 4566 4567 tbase = mega_baseport; 4568 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4569 flag |= BOARD_MEMMAP; 4570 4571 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4572 printk(KERN_WARNING "megaraid: mem region busy!\n"); 4573 goto out_disable_device; 4574 } 4575 4576 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4577 if (!mega_baseport) { 4578 printk(KERN_WARNING 4579 "megaraid: could not map hba memory\n"); 4580 goto out_release_region; 4581 } 4582 } else { 4583 flag |= BOARD_IOMAP; 4584 mega_baseport += 0x10; 4585 4586 if (!request_region(mega_baseport, 16, "megaraid")) 4587 goto out_disable_device; 4588 } 4589 4590 /* Initialize SCSI Host structure */ 4591 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4592 if (!host) 4593 goto out_iounmap; 4594 4595 adapter = (adapter_t *)host->hostdata; 4596 memset(adapter, 0, sizeof(adapter_t)); 4597 4598 printk(KERN_NOTICE 4599 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4600 host->host_no, mega_baseport, irq); 4601 4602 adapter->base = mega_baseport; 4603 if (flag & BOARD_MEMMAP) 4604 adapter->mmio_base = (void __iomem *) mega_baseport; 4605 4606 INIT_LIST_HEAD(&adapter->free_list); 4607 INIT_LIST_HEAD(&adapter->pending_list); 4608 INIT_LIST_HEAD(&adapter->completed_list); 4609 4610 adapter->flag = flag; 4611 spin_lock_init(&adapter->lock); 4612 4613 host->cmd_per_lun = max_cmd_per_lun; 4614 host->max_sectors = max_sectors_per_io; 4615 4616 adapter->dev = pdev; 4617 adapter->host = host; 4618 4619 adapter->host->irq = irq; 4620 4621 if (flag & BOARD_MEMMAP) 4622 adapter->host->base = tbase; 4623 else { 4624 adapter->host->io_port = tbase; 4625 adapter->host->n_io_port = 16; 4626 } 4627 4628 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4629 4630 /* 4631 * Allocate buffer to issue internal commands. 4632 */ 4633 adapter->mega_buffer = pci_alloc_consistent(adapter->dev, 4634 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); 4635 if (!adapter->mega_buffer) { 4636 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4637 goto out_host_put; 4638 } 4639 4640 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL); 4641 if (!adapter->scb_list) { 4642 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4643 goto out_free_cmd_buffer; 4644 } 4645 4646 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4647 megaraid_isr_memmapped : megaraid_isr_iomapped, 4648 IRQF_SHARED, "megaraid", adapter)) { 4649 printk(KERN_WARNING 4650 "megaraid: Couldn't register IRQ %d!\n", irq); 4651 goto out_free_scb_list; 4652 } 4653 4654 if (mega_setup_mailbox(adapter)) 4655 goto out_free_irq; 4656 4657 if (mega_query_adapter(adapter)) 4658 goto out_free_mbox; 4659 4660 /* 4661 * Have checks for some buggy f/w 4662 */ 4663 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4664 /* 4665 * Which firmware 4666 */ 4667 if (!strcmp(adapter->fw_version, "3.00") || 4668 !strcmp(adapter->fw_version, "3.01")) { 4669 4670 printk( KERN_WARNING 4671 "megaraid: Your card is a Dell PERC " 4672 "2/SC RAID controller with " 4673 "firmware\nmegaraid: 3.00 or 3.01. " 4674 "This driver is known to have " 4675 "corruption issues\nmegaraid: with " 4676 "those firmware versions on this " 4677 "specific card. In order\nmegaraid: " 4678 "to protect your data, please upgrade " 4679 "your firmware to version\nmegaraid: " 4680 "3.10 or later, available from the " 4681 "Dell Technical Support web\n" 4682 "megaraid: site at\nhttp://support." 4683 "dell.com/us/en/filelib/download/" 4684 "index.asp?fileid=2940\n" 4685 ); 4686 } 4687 } 4688 4689 /* 4690 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4691 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4692 * support, since this firmware cannot handle 64 bit 4693 * addressing 4694 */ 4695 if ((subsysvid == HP_SUBSYS_VID) && 4696 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4697 /* 4698 * which firmware 4699 */ 4700 if (!strcmp(adapter->fw_version, "H01.07") || 4701 !strcmp(adapter->fw_version, "H01.08") || 4702 !strcmp(adapter->fw_version, "H01.09") ) { 4703 printk(KERN_WARNING 4704 "megaraid: Firmware H.01.07, " 4705 "H.01.08, and H.01.09 on 1M/2M " 4706 "controllers\n" 4707 "megaraid: do not support 64 bit " 4708 "addressing.\nmegaraid: DISABLING " 4709 "64 bit support.\n"); 4710 adapter->flag &= ~BOARD_64BIT; 4711 } 4712 } 4713 4714 if (mega_is_bios_enabled(adapter)) 4715 mega_hbas[hba_count].is_bios_enabled = 1; 4716 mega_hbas[hba_count].hostdata_addr = adapter; 4717 4718 /* 4719 * Find out which channel is raid and which is scsi. This is 4720 * for ROMB support. 4721 */ 4722 mega_enum_raid_scsi(adapter); 4723 4724 /* 4725 * Find out if a logical drive is set as the boot drive. If 4726 * there is one, will make that as the first logical drive. 4727 * ROMB: Do we have to boot from a physical drive. Then all 4728 * the physical drives would appear before the logical disks. 4729 * Else, all the physical drives would be exported to the mid 4730 * layer after logical drives. 4731 */ 4732 mega_get_boot_drv(adapter); 4733 4734 if (adapter->boot_pdrv_enabled) { 4735 j = adapter->product_info.nchannels; 4736 for( i = 0; i < j; i++ ) 4737 adapter->logdrv_chan[i] = 0; 4738 for( i = j; i < NVIRT_CHAN + j; i++ ) 4739 adapter->logdrv_chan[i] = 1; 4740 } else { 4741 for (i = 0; i < NVIRT_CHAN; i++) 4742 adapter->logdrv_chan[i] = 1; 4743 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4744 adapter->logdrv_chan[i] = 0; 4745 adapter->mega_ch_class <<= NVIRT_CHAN; 4746 } 4747 4748 /* 4749 * Do we support random deletion and addition of logical 4750 * drives 4751 */ 4752 adapter->read_ldidmap = 0; /* set it after first logdrv 4753 delete cmd */ 4754 adapter->support_random_del = mega_support_random_del(adapter); 4755 4756 /* Initialize SCBs */ 4757 if (mega_init_scb(adapter)) 4758 goto out_free_mbox; 4759 4760 /* 4761 * Reset the pending commands counter 4762 */ 4763 atomic_set(&adapter->pend_cmds, 0); 4764 4765 /* 4766 * Reset the adapter quiescent flag 4767 */ 4768 atomic_set(&adapter->quiescent, 0); 4769 4770 hba_soft_state[hba_count] = adapter; 4771 4772 /* 4773 * Fill in the structure which needs to be passed back to the 4774 * application when it does an ioctl() for controller related 4775 * information. 4776 */ 4777 i = hba_count; 4778 4779 mcontroller[i].base = mega_baseport; 4780 mcontroller[i].irq = irq; 4781 mcontroller[i].numldrv = adapter->numldrv; 4782 mcontroller[i].pcibus = pci_bus; 4783 mcontroller[i].pcidev = id->device; 4784 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4785 mcontroller[i].pciid = -1; 4786 mcontroller[i].pcivendor = id->vendor; 4787 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4788 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4789 4790 4791 /* Set the Mode of addressing to 64 bit if we can */ 4792 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4793 pci_set_dma_mask(pdev, DMA_64BIT_MASK); 4794 adapter->has_64bit_addr = 1; 4795 } else { 4796 pci_set_dma_mask(pdev, DMA_32BIT_MASK); 4797 adapter->has_64bit_addr = 0; 4798 } 4799 4800 mutex_init(&adapter->int_mtx); 4801 init_completion(&adapter->int_waitq); 4802 4803 adapter->this_id = DEFAULT_INITIATOR_ID; 4804 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4805 4806 #if MEGA_HAVE_CLUSTERING 4807 /* 4808 * Is cluster support enabled on this controller 4809 * Note: In a cluster the HBAs ( the initiators ) will have 4810 * different target IDs and we cannot assume it to be 7. Call 4811 * to mega_support_cluster() will get the target ids also if 4812 * the cluster support is available 4813 */ 4814 adapter->has_cluster = mega_support_cluster(adapter); 4815 if (adapter->has_cluster) { 4816 printk(KERN_NOTICE 4817 "megaraid: Cluster driver, initiator id:%d\n", 4818 adapter->this_id); 4819 } 4820 #endif 4821 4822 pci_set_drvdata(pdev, host); 4823 4824 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4825 4826 error = scsi_add_host(host, &pdev->dev); 4827 if (error) 4828 goto out_free_mbox; 4829 4830 scsi_scan_host(host); 4831 hba_count++; 4832 return 0; 4833 4834 out_free_mbox: 4835 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4836 adapter->una_mbox64, adapter->una_mbox64_dma); 4837 out_free_irq: 4838 free_irq(adapter->host->irq, adapter); 4839 out_free_scb_list: 4840 kfree(adapter->scb_list); 4841 out_free_cmd_buffer: 4842 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4843 adapter->mega_buffer, adapter->buf_dma_handle); 4844 out_host_put: 4845 scsi_host_put(host); 4846 out_iounmap: 4847 if (flag & BOARD_MEMMAP) 4848 iounmap((void *)mega_baseport); 4849 out_release_region: 4850 if (flag & BOARD_MEMMAP) 4851 release_mem_region(tbase, 128); 4852 else 4853 release_region(mega_baseport, 16); 4854 out_disable_device: 4855 pci_disable_device(pdev); 4856 out: 4857 return error; 4858 } 4859 4860 static void 4861 __megaraid_shutdown(adapter_t *adapter) 4862 { 4863 u_char raw_mbox[sizeof(struct mbox_out)]; 4864 mbox_t *mbox = (mbox_t *)raw_mbox; 4865 int i; 4866 4867 /* Flush adapter cache */ 4868 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4869 raw_mbox[0] = FLUSH_ADAPTER; 4870 4871 free_irq(adapter->host->irq, adapter); 4872 4873 /* Issue a blocking (interrupts disabled) command to the card */ 4874 issue_scb_block(adapter, raw_mbox); 4875 4876 /* Flush disks cache */ 4877 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4878 raw_mbox[0] = FLUSH_SYSTEM; 4879 4880 /* Issue a blocking (interrupts disabled) command to the card */ 4881 issue_scb_block(adapter, raw_mbox); 4882 4883 if (atomic_read(&adapter->pend_cmds) > 0) 4884 printk(KERN_WARNING "megaraid: pending commands!!\n"); 4885 4886 /* 4887 * Have a delibrate delay to make sure all the caches are 4888 * actually flushed. 4889 */ 4890 for (i = 0; i <= 10; i++) 4891 mdelay(1000); 4892 } 4893 4894 static void 4895 megaraid_remove_one(struct pci_dev *pdev) 4896 { 4897 struct Scsi_Host *host = pci_get_drvdata(pdev); 4898 adapter_t *adapter = (adapter_t *)host->hostdata; 4899 4900 scsi_remove_host(host); 4901 4902 __megaraid_shutdown(adapter); 4903 4904 /* Free our resources */ 4905 if (adapter->flag & BOARD_MEMMAP) { 4906 iounmap((void *)adapter->base); 4907 release_mem_region(adapter->host->base, 128); 4908 } else 4909 release_region(adapter->base, 16); 4910 4911 mega_free_sgl(adapter); 4912 4913 #ifdef CONFIG_PROC_FS 4914 if (adapter->controller_proc_dir_entry) { 4915 remove_proc_entry("stat", adapter->controller_proc_dir_entry); 4916 remove_proc_entry("config", 4917 adapter->controller_proc_dir_entry); 4918 remove_proc_entry("mailbox", 4919 adapter->controller_proc_dir_entry); 4920 #if MEGA_HAVE_ENH_PROC 4921 remove_proc_entry("rebuild-rate", 4922 adapter->controller_proc_dir_entry); 4923 remove_proc_entry("battery-status", 4924 adapter->controller_proc_dir_entry); 4925 4926 remove_proc_entry("diskdrives-ch0", 4927 adapter->controller_proc_dir_entry); 4928 remove_proc_entry("diskdrives-ch1", 4929 adapter->controller_proc_dir_entry); 4930 remove_proc_entry("diskdrives-ch2", 4931 adapter->controller_proc_dir_entry); 4932 remove_proc_entry("diskdrives-ch3", 4933 adapter->controller_proc_dir_entry); 4934 4935 remove_proc_entry("raiddrives-0-9", 4936 adapter->controller_proc_dir_entry); 4937 remove_proc_entry("raiddrives-10-19", 4938 adapter->controller_proc_dir_entry); 4939 remove_proc_entry("raiddrives-20-29", 4940 adapter->controller_proc_dir_entry); 4941 remove_proc_entry("raiddrives-30-39", 4942 adapter->controller_proc_dir_entry); 4943 #endif 4944 { 4945 char buf[12] = { 0 }; 4946 sprintf(buf, "hba%d", adapter->host->host_no); 4947 remove_proc_entry(buf, mega_proc_dir_entry); 4948 } 4949 } 4950 #endif 4951 4952 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4953 adapter->mega_buffer, adapter->buf_dma_handle); 4954 kfree(adapter->scb_list); 4955 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4956 adapter->una_mbox64, adapter->una_mbox64_dma); 4957 4958 scsi_host_put(host); 4959 pci_disable_device(pdev); 4960 4961 hba_count--; 4962 } 4963 4964 static void 4965 megaraid_shutdown(struct pci_dev *pdev) 4966 { 4967 struct Scsi_Host *host = pci_get_drvdata(pdev); 4968 adapter_t *adapter = (adapter_t *)host->hostdata; 4969 4970 __megaraid_shutdown(adapter); 4971 } 4972 4973 static struct pci_device_id megaraid_pci_tbl[] = { 4974 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 4975 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4976 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 4977 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4978 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 4979 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4980 {0,} 4981 }; 4982 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 4983 4984 static struct pci_driver megaraid_pci_driver = { 4985 .name = "megaraid_legacy", 4986 .id_table = megaraid_pci_tbl, 4987 .probe = megaraid_probe_one, 4988 .remove = __devexit_p(megaraid_remove_one), 4989 .shutdown = megaraid_shutdown, 4990 }; 4991 4992 static int __init megaraid_init(void) 4993 { 4994 int error; 4995 4996 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 4997 max_cmd_per_lun = MAX_CMD_PER_LUN; 4998 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 4999 max_mbox_busy_wait = MBOX_BUSY_WAIT; 5000 5001 #ifdef CONFIG_PROC_FS 5002 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root); 5003 if (!mega_proc_dir_entry) { 5004 printk(KERN_WARNING 5005 "megaraid: failed to create megaraid root\n"); 5006 } 5007 #endif 5008 error = pci_register_driver(&megaraid_pci_driver); 5009 if (error) { 5010 #ifdef CONFIG_PROC_FS 5011 remove_proc_entry("megaraid", &proc_root); 5012 #endif 5013 return error; 5014 } 5015 5016 /* 5017 * Register the driver as a character device, for applications 5018 * to access it for ioctls. 5019 * First argument (major) to register_chrdev implies a dynamic 5020 * major number allocation. 5021 */ 5022 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 5023 if (!major) { 5024 printk(KERN_WARNING 5025 "megaraid: failed to register char device\n"); 5026 } 5027 5028 return 0; 5029 } 5030 5031 static void __exit megaraid_exit(void) 5032 { 5033 /* 5034 * Unregister the character device interface to the driver. 5035 */ 5036 unregister_chrdev(major, "megadev_legacy"); 5037 5038 pci_unregister_driver(&megaraid_pci_driver); 5039 5040 #ifdef CONFIG_PROC_FS 5041 remove_proc_entry("megaraid", &proc_root); 5042 #endif 5043 } 5044 5045 module_init(megaraid_init); 5046 module_exit(megaraid_exit); 5047 5048 /* vi: set ts=8 sw=8 tw=78: */ 5049