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