1/* 2 * 3 * Linux MegaRAID device driver 4 * 5 * Copyright (c) 2002 LSI Logic Corporation. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 * 12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved. 13 * - fixes 14 * - speed-ups (list handling fixes, issued_list, optimizations.) 15 * - lots of cleanups. 16 * 17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de> 18 * - new-style, hotplug-aware pci probing and scsi registration 19 * 20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju 21 * <Seokmann.Ju@lsil.com> 22 * 23 * Description: Linux device driver for LSI Logic MegaRAID controller 24 * 25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 26 * 518, 520, 531, 532 27 * 28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell, 29 * and others. Please send updates to the mailing list 30 * linux-scsi@vger.kernel.org . 31 * 32 */ 33 34#include <linux/mm.h> 35#include <linux/fs.h> 36#include <linux/blkdev.h> 37#include <asm/uaccess.h> 38#include <asm/io.h> 39#include <linux/completion.h> 40#include <linux/delay.h> 41#include <linux/proc_fs.h> 42#include <linux/reboot.h> 43#include <linux/module.h> 44#include <linux/list.h> 45#include <linux/interrupt.h> 46#include <linux/pci.h> 47#include <linux/init.h> 48#include <linux/dma-mapping.h> 49#include <scsi/scsicam.h> 50 51#include "scsi.h" 52#include <scsi/scsi_host.h> 53 54#include "megaraid.h" 55 56#define MEGARAID_MODULE_VERSION "2.00.4" 57 58MODULE_AUTHOR ("sju@lsil.com"); 59MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver"); 60MODULE_LICENSE ("GPL"); 61MODULE_VERSION(MEGARAID_MODULE_VERSION); 62 63static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; 64module_param(max_cmd_per_lun, uint, 0); 65MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)"); 66 67static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO; 68module_param(max_sectors_per_io, ushort, 0); 69MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)"); 70 71 72static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; 73module_param(max_mbox_busy_wait, ushort, 0); 74MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)"); 75 76#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20) 77#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C) 78#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20) 79#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C) 80 81/* 82 * Global variables 83 */ 84 85static int hba_count; 86static adapter_t *hba_soft_state[MAX_CONTROLLERS]; 87static struct proc_dir_entry *mega_proc_dir_entry; 88 89/* For controller re-ordering */ 90static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; 91 92/* 93 * The File Operations structure for the serial/ioctl interface of the driver 94 */ 95static const struct file_operations megadev_fops = { 96 .owner = THIS_MODULE, 97 .ioctl = megadev_ioctl, 98 .open = megadev_open, 99}; 100 101/* 102 * Array to structures for storing the information about the controllers. This 103 * information is sent to the user level applications, when they do an ioctl 104 * for this information. 105 */ 106static struct mcontroller mcontroller[MAX_CONTROLLERS]; 107 108/* The current driver version */ 109static u32 driver_ver = 0x02000000; 110 111/* major number used by the device for character interface */ 112static int major; 113 114#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01) 115 116 117/* 118 * Debug variable to print some diagnostic messages 119 */ 120static int trace_level; 121 122/** 123 * mega_setup_mailbox() 124 * @adapter - pointer to our soft state 125 * 126 * Allocates a 8 byte aligned memory for the handshake mailbox. 127 */ 128static int 129mega_setup_mailbox(adapter_t *adapter) 130{ 131 unsigned long align; 132 133 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev, 134 sizeof(mbox64_t), &adapter->una_mbox64_dma); 135 136 if( !adapter->una_mbox64 ) return -1; 137 138 adapter->mbox = &adapter->una_mbox64->mbox; 139 140 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & 141 (~0UL ^ 0xFUL)); 142 143 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); 144 145 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); 146 147 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; 148 149 /* 150 * Register the mailbox if the controller is an io-mapped controller 151 */ 152 if( adapter->flag & BOARD_IOMAP ) { 153 154 outb_p(adapter->mbox_dma & 0xFF, 155 adapter->host->io_port + MBOX_PORT0); 156 157 outb_p((adapter->mbox_dma >> 8) & 0xFF, 158 adapter->host->io_port + MBOX_PORT1); 159 160 outb_p((adapter->mbox_dma >> 16) & 0xFF, 161 adapter->host->io_port + MBOX_PORT2); 162 163 outb_p((adapter->mbox_dma >> 24) & 0xFF, 164 adapter->host->io_port + MBOX_PORT3); 165 166 outb_p(ENABLE_MBOX_BYTE, 167 adapter->host->io_port + ENABLE_MBOX_REGION); 168 169 irq_ack(adapter); 170 171 irq_enable(adapter); 172 } 173 174 return 0; 175} 176 177 178/* 179 * mega_query_adapter() 180 * @adapter - pointer to our soft state 181 * 182 * Issue the adapter inquiry commands to the controller and find out 183 * information and parameter about the devices attached 184 */ 185static int 186mega_query_adapter(adapter_t *adapter) 187{ 188 dma_addr_t prod_info_dma_handle; 189 mega_inquiry3 *inquiry3; 190 u8 raw_mbox[sizeof(struct mbox_out)]; 191 mbox_t *mbox; 192 int retval; 193 194 /* Initialize adapter inquiry mailbox */ 195 196 mbox = (mbox_t *)raw_mbox; 197 198 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 199 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 200 201 /* 202 * Try to issue Inquiry3 command 203 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and 204 * update enquiry3 structure 205 */ 206 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 207 208 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; 209 210 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 211 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ 212 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ 213 214 /* Issue a blocking command to the card */ 215 if ((retval = issue_scb_block(adapter, raw_mbox))) { 216 /* the adapter does not support 40ld */ 217 218 mraid_ext_inquiry *ext_inq; 219 mraid_inquiry *inq; 220 dma_addr_t dma_handle; 221 222 ext_inq = pci_alloc_consistent(adapter->dev, 223 sizeof(mraid_ext_inquiry), &dma_handle); 224 225 if( ext_inq == NULL ) return -1; 226 227 inq = &ext_inq->raid_inq; 228 229 mbox->m_out.xferaddr = (u32)dma_handle; 230 231 /*issue old 0x04 command to adapter */ 232 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ; 233 234 issue_scb_block(adapter, raw_mbox); 235 236 /* 237 * update Enquiry3 and ProductInfo structures with 238 * mraid_inquiry structure 239 */ 240 mega_8_to_40ld(inq, inquiry3, 241 (mega_product_info *)&adapter->product_info); 242 243 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry), 244 ext_inq, dma_handle); 245 246 } else { /*adapter supports 40ld */ 247 adapter->flag |= BOARD_40LD; 248 249 /* 250 * get product_info, which is static information and will be 251 * unchanged 252 */ 253 prod_info_dma_handle = pci_map_single(adapter->dev, (void *) 254 &adapter->product_info, 255 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 256 257 mbox->m_out.xferaddr = prod_info_dma_handle; 258 259 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 260 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ 261 262 if ((retval = issue_scb_block(adapter, raw_mbox))) 263 printk(KERN_WARNING 264 "megaraid: Product_info cmd failed with error: %d\n", 265 retval); 266 267 pci_unmap_single(adapter->dev, prod_info_dma_handle, 268 sizeof(mega_product_info), PCI_DMA_FROMDEVICE); 269 } 270 271 272 /* 273 * kernel scans the channels from 0 to <= max_channel 274 */ 275 adapter->host->max_channel = 276 adapter->product_info.nchannels + NVIRT_CHAN -1; 277 278 adapter->host->max_id = 16; /* max targets per channel */ 279 280 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */ 281 282 adapter->host->cmd_per_lun = max_cmd_per_lun; 283 284 adapter->numldrv = inquiry3->num_ldrv; 285 286 adapter->max_cmds = adapter->product_info.max_commands; 287 288 if(adapter->max_cmds > MAX_COMMANDS) 289 adapter->max_cmds = MAX_COMMANDS; 290 291 adapter->host->can_queue = adapter->max_cmds - 1; 292 293 /* 294 * Get the maximum number of scatter-gather elements supported by this 295 * firmware 296 */ 297 mega_get_max_sgl(adapter); 298 299 adapter->host->sg_tablesize = adapter->sglen; 300 301 302 /* use HP firmware and bios version encoding */ 303 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) { 304 sprintf (adapter->fw_version, "%c%d%d.%d%d", 305 adapter->product_info.fw_version[2], 306 adapter->product_info.fw_version[1] >> 8, 307 adapter->product_info.fw_version[1] & 0x0f, 308 adapter->product_info.fw_version[0] >> 8, 309 adapter->product_info.fw_version[0] & 0x0f); 310 sprintf (adapter->bios_version, "%c%d%d.%d%d", 311 adapter->product_info.bios_version[2], 312 adapter->product_info.bios_version[1] >> 8, 313 adapter->product_info.bios_version[1] & 0x0f, 314 adapter->product_info.bios_version[0] >> 8, 315 adapter->product_info.bios_version[0] & 0x0f); 316 } else { 317 memcpy(adapter->fw_version, 318 (char *)adapter->product_info.fw_version, 4); 319 adapter->fw_version[4] = 0; 320 321 memcpy(adapter->bios_version, 322 (char *)adapter->product_info.bios_version, 4); 323 324 adapter->bios_version[4] = 0; 325 } 326 327 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n", 328 adapter->fw_version, adapter->bios_version, adapter->numldrv); 329 330 /* 331 * Do we support extended (>10 bytes) cdbs 332 */ 333 adapter->support_ext_cdb = mega_support_ext_cdb(adapter); 334 if (adapter->support_ext_cdb) 335 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n"); 336 337 338 return 0; 339} 340 341/** 342 * mega_runpendq() 343 * @adapter - pointer to our soft state 344 * 345 * Runs through the list of pending requests. 346 */ 347static inline void 348mega_runpendq(adapter_t *adapter) 349{ 350 if(!list_empty(&adapter->pending_list)) 351 __mega_runpendq(adapter); 352} 353 354/* 355 * megaraid_queue() 356 * @scmd - Issue this scsi command 357 * @done - the callback hook into the scsi mid-layer 358 * 359 * The command queuing entry point for the mid-layer. 360 */ 361static int 362megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *)) 363{ 364 adapter_t *adapter; 365 scb_t *scb; 366 int busy=0; 367 unsigned long flags; 368 369 adapter = (adapter_t *)scmd->device->host->hostdata; 370 371 scmd->scsi_done = done; 372 373 374 /* 375 * Allocate and build a SCB request 376 * busy flag will be set if mega_build_cmd() command could not 377 * allocate scb. We will return non-zero status in that case. 378 * NOTE: scb can be null even though certain commands completed 379 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would 380 * return 0 in that case. 381 */ 382 383 spin_lock_irqsave(&adapter->lock, flags); 384 scb = mega_build_cmd(adapter, scmd, &busy); 385 if (!scb) 386 goto out; 387 388 scb->state |= SCB_PENDQ; 389 list_add_tail(&scb->list, &adapter->pending_list); 390 391 /* 392 * Check if the HBA is in quiescent state, e.g., during a 393 * delete logical drive opertion. If it is, don't run 394 * the pending_list. 395 */ 396 if (atomic_read(&adapter->quiescent) == 0) 397 mega_runpendq(adapter); 398 399 busy = 0; 400 out: 401 spin_unlock_irqrestore(&adapter->lock, flags); 402 return busy; 403} 404 405/** 406 * mega_allocate_scb() 407 * @adapter - pointer to our soft state 408 * @cmd - scsi command from the mid-layer 409 * 410 * Allocate a SCB structure. This is the central structure for controller 411 * commands. 412 */ 413static inline scb_t * 414mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd) 415{ 416 struct list_head *head = &adapter->free_list; 417 scb_t *scb; 418 419 /* Unlink command from Free List */ 420 if( !list_empty(head) ) { 421 422 scb = list_entry(head->next, scb_t, list); 423 424 list_del_init(head->next); 425 426 scb->state = SCB_ACTIVE; 427 scb->cmd = cmd; 428 scb->dma_type = MEGA_DMA_TYPE_NONE; 429 430 return scb; 431 } 432 433 return NULL; 434} 435 436/** 437 * mega_get_ldrv_num() 438 * @adapter - pointer to our soft state 439 * @cmd - scsi mid layer command 440 * @channel - channel on the controller 441 * 442 * Calculate the logical drive number based on the information in scsi command 443 * and the channel number. 444 */ 445static inline int 446mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel) 447{ 448 int tgt; 449 int ldrv_num; 450 451 tgt = cmd->device->id; 452 453 if ( tgt > adapter->this_id ) 454 tgt--; /* we do not get inquires for initiator id */ 455 456 ldrv_num = (channel * 15) + tgt; 457 458 459 /* 460 * If we have a logical drive with boot enabled, project it first 461 */ 462 if( adapter->boot_ldrv_enabled ) { 463 if( ldrv_num == 0 ) { 464 ldrv_num = adapter->boot_ldrv; 465 } 466 else { 467 if( ldrv_num <= adapter->boot_ldrv ) { 468 ldrv_num--; 469 } 470 } 471 } 472 473 /* 474 * If "delete logical drive" feature is enabled on this controller. 475 * Do only if at least one delete logical drive operation was done. 476 * 477 * Also, after logical drive deletion, instead of logical drive number, 478 * the value returned should be 0x80+logical drive id. 479 * 480 * These is valid only for IO commands. 481 */ 482 483 if (adapter->support_random_del && adapter->read_ldidmap ) 484 switch (cmd->cmnd[0]) { 485 case READ_6: /* fall through */ 486 case WRITE_6: /* fall through */ 487 case READ_10: /* fall through */ 488 case WRITE_10: 489 ldrv_num += 0x80; 490 } 491 492 return ldrv_num; 493} 494 495/** 496 * mega_build_cmd() 497 * @adapter - pointer to our soft state 498 * @cmd - Prepare using this scsi command 499 * @busy - busy flag if no resources 500 * 501 * Prepares a command and scatter gather list for the controller. This routine 502 * also finds out if the commands is intended for a logical drive or a 503 * physical device and prepares the controller command accordingly. 504 * 505 * We also re-order the logical drives and physical devices based on their 506 * boot settings. 507 */ 508static scb_t * 509mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy) 510{ 511 mega_ext_passthru *epthru; 512 mega_passthru *pthru; 513 scb_t *scb; 514 mbox_t *mbox; 515 long seg; 516 char islogical; 517 int max_ldrv_num; 518 int channel = 0; 519 int target = 0; 520 int ldrv_num = 0; /* logical drive number */ 521 522 523 /* 524 * filter the internal and ioctl commands 525 */ 526 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) { 527 return cmd->request_buffer; 528 } 529 530 531 /* 532 * We know what channels our logical drives are on - mega_find_card() 533 */ 534 islogical = adapter->logdrv_chan[cmd->device->channel]; 535 536 /* 537 * The theory: If physical drive is chosen for boot, all the physical 538 * devices are exported before the logical drives, otherwise physical 539 * devices are pushed after logical drives, in which case - Kernel sees 540 * the physical devices on virtual channel which is obviously converted 541 * to actual channel on the HBA. 542 */ 543 if( adapter->boot_pdrv_enabled ) { 544 if( islogical ) { 545 /* logical channel */ 546 channel = cmd->device->channel - 547 adapter->product_info.nchannels; 548 } 549 else { 550 /* this is physical channel */ 551 channel = cmd->device->channel; 552 target = cmd->device->id; 553 554 /* 555 * boot from a physical disk, that disk needs to be 556 * exposed first IF both the channels are SCSI, then 557 * booting from the second channel is not allowed. 558 */ 559 if( target == 0 ) { 560 target = adapter->boot_pdrv_tgt; 561 } 562 else if( target == adapter->boot_pdrv_tgt ) { 563 target = 0; 564 } 565 } 566 } 567 else { 568 if( islogical ) { 569 /* this is the logical channel */ 570 channel = cmd->device->channel; 571 } 572 else { 573 /* physical channel */ 574 channel = cmd->device->channel - NVIRT_CHAN; 575 target = cmd->device->id; 576 } 577 } 578 579 580 if(islogical) { 581 582 /* have just LUN 0 for each target on virtual channels */ 583 if (cmd->device->lun) { 584 cmd->result = (DID_BAD_TARGET << 16); 585 cmd->scsi_done(cmd); 586 return NULL; 587 } 588 589 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 590 591 592 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 593 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 594 595 /* 596 * max_ldrv_num increases by 0x80 if some logical drive was 597 * deleted. 598 */ 599 if(adapter->read_ldidmap) 600 max_ldrv_num += 0x80; 601 602 if(ldrv_num > max_ldrv_num ) { 603 cmd->result = (DID_BAD_TARGET << 16); 604 cmd->scsi_done(cmd); 605 return NULL; 606 } 607 608 } 609 else { 610 if( cmd->device->lun > 7) { 611 /* 612 * Do not support lun >7 for physically accessed 613 * devices 614 */ 615 cmd->result = (DID_BAD_TARGET << 16); 616 cmd->scsi_done(cmd); 617 return NULL; 618 } 619 } 620 621 /* 622 * 623 * Logical drive commands 624 * 625 */ 626 if(islogical) { 627 switch (cmd->cmnd[0]) { 628 case TEST_UNIT_READY: 629#if MEGA_HAVE_CLUSTERING 630 /* 631 * Do we support clustering and is the support enabled 632 * If no, return success always 633 */ 634 if( !adapter->has_cluster ) { 635 cmd->result = (DID_OK << 16); 636 cmd->scsi_done(cmd); 637 return NULL; 638 } 639 640 if(!(scb = mega_allocate_scb(adapter, cmd))) { 641 *busy = 1; 642 return NULL; 643 } 644 645 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 646 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 647 scb->raw_mbox[3] = ldrv_num; 648 649 scb->dma_direction = PCI_DMA_NONE; 650 651 return scb; 652#else 653 cmd->result = (DID_OK << 16); 654 cmd->scsi_done(cmd); 655 return NULL; 656#endif 657 658 case MODE_SENSE: { 659 char *buf; 660 661 if (cmd->use_sg) { 662 struct scatterlist *sg; 663 664 sg = (struct scatterlist *)cmd->request_buffer; 665 buf = kmap_atomic(sg->page, KM_IRQ0) + 666 sg->offset; 667 } else 668 buf = cmd->request_buffer; 669 memset(buf, 0, cmd->cmnd[4]); 670 if (cmd->use_sg) { 671 struct scatterlist *sg; 672 673 sg = (struct scatterlist *)cmd->request_buffer; 674 kunmap_atomic(buf - sg->offset, KM_IRQ0); 675 } 676 cmd->result = (DID_OK << 16); 677 cmd->scsi_done(cmd); 678 return NULL; 679 } 680 681 case READ_CAPACITY: 682 case INQUIRY: 683 684 if(!(adapter->flag & (1L << cmd->device->channel))) { 685 686 printk(KERN_NOTICE 687 "scsi%d: scanning scsi channel %d ", 688 adapter->host->host_no, 689 cmd->device->channel); 690 printk("for logical drives.\n"); 691 692 adapter->flag |= (1L << cmd->device->channel); 693 } 694 695 /* Allocate a SCB and initialize passthru */ 696 if(!(scb = mega_allocate_scb(adapter, cmd))) { 697 *busy = 1; 698 return NULL; 699 } 700 pthru = scb->pthru; 701 702 mbox = (mbox_t *)scb->raw_mbox; 703 memset(mbox, 0, sizeof(scb->raw_mbox)); 704 memset(pthru, 0, sizeof(mega_passthru)); 705 706 pthru->timeout = 0; 707 pthru->ars = 1; 708 pthru->reqsenselen = 14; 709 pthru->islogical = 1; 710 pthru->logdrv = ldrv_num; 711 pthru->cdblen = cmd->cmd_len; 712 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 713 714 if( adapter->has_64bit_addr ) { 715 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 716 } 717 else { 718 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 719 } 720 721 scb->dma_direction = PCI_DMA_FROMDEVICE; 722 723 pthru->numsgelements = mega_build_sglist(adapter, scb, 724 &pthru->dataxferaddr, &pthru->dataxferlen); 725 726 mbox->m_out.xferaddr = scb->pthru_dma_addr; 727 728 return scb; 729 730 case READ_6: 731 case WRITE_6: 732 case READ_10: 733 case WRITE_10: 734 case READ_12: 735 case WRITE_12: 736 737 /* Allocate a SCB and initialize mailbox */ 738 if(!(scb = mega_allocate_scb(adapter, cmd))) { 739 *busy = 1; 740 return NULL; 741 } 742 mbox = (mbox_t *)scb->raw_mbox; 743 744 memset(mbox, 0, sizeof(scb->raw_mbox)); 745 mbox->m_out.logdrv = ldrv_num; 746 747 /* 748 * A little hack: 2nd bit is zero for all scsi read 749 * commands and is set for all scsi write commands 750 */ 751 if( adapter->has_64bit_addr ) { 752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 753 MEGA_MBOXCMD_LWRITE64: 754 MEGA_MBOXCMD_LREAD64 ; 755 } 756 else { 757 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 758 MEGA_MBOXCMD_LWRITE: 759 MEGA_MBOXCMD_LREAD ; 760 } 761 762 /* 763 * 6-byte READ(0x08) or WRITE(0x0A) cdb 764 */ 765 if( cmd->cmd_len == 6 ) { 766 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 767 mbox->m_out.lba = 768 ((u32)cmd->cmnd[1] << 16) | 769 ((u32)cmd->cmnd[2] << 8) | 770 (u32)cmd->cmnd[3]; 771 772 mbox->m_out.lba &= 0x1FFFFF; 773 774#if MEGA_HAVE_STATS 775 /* 776 * Take modulo 0x80, since the logical drive 777 * number increases by 0x80 when a logical 778 * drive was deleted 779 */ 780 if (*cmd->cmnd == READ_6) { 781 adapter->nreads[ldrv_num%0x80]++; 782 adapter->nreadblocks[ldrv_num%0x80] += 783 mbox->m_out.numsectors; 784 } else { 785 adapter->nwrites[ldrv_num%0x80]++; 786 adapter->nwriteblocks[ldrv_num%0x80] += 787 mbox->m_out.numsectors; 788 } 789#endif 790 } 791 792 /* 793 * 10-byte READ(0x28) or WRITE(0x2A) cdb 794 */ 795 if( cmd->cmd_len == 10 ) { 796 mbox->m_out.numsectors = 797 (u32)cmd->cmnd[8] | 798 ((u32)cmd->cmnd[7] << 8); 799 mbox->m_out.lba = 800 ((u32)cmd->cmnd[2] << 24) | 801 ((u32)cmd->cmnd[3] << 16) | 802 ((u32)cmd->cmnd[4] << 8) | 803 (u32)cmd->cmnd[5]; 804 805#if MEGA_HAVE_STATS 806 if (*cmd->cmnd == READ_10) { 807 adapter->nreads[ldrv_num%0x80]++; 808 adapter->nreadblocks[ldrv_num%0x80] += 809 mbox->m_out.numsectors; 810 } else { 811 adapter->nwrites[ldrv_num%0x80]++; 812 adapter->nwriteblocks[ldrv_num%0x80] += 813 mbox->m_out.numsectors; 814 } 815#endif 816 } 817 818 /* 819 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 820 */ 821 if( cmd->cmd_len == 12 ) { 822 mbox->m_out.lba = 823 ((u32)cmd->cmnd[2] << 24) | 824 ((u32)cmd->cmnd[3] << 16) | 825 ((u32)cmd->cmnd[4] << 8) | 826 (u32)cmd->cmnd[5]; 827 828 mbox->m_out.numsectors = 829 ((u32)cmd->cmnd[6] << 24) | 830 ((u32)cmd->cmnd[7] << 16) | 831 ((u32)cmd->cmnd[8] << 8) | 832 (u32)cmd->cmnd[9]; 833 834#if MEGA_HAVE_STATS 835 if (*cmd->cmnd == READ_12) { 836 adapter->nreads[ldrv_num%0x80]++; 837 adapter->nreadblocks[ldrv_num%0x80] += 838 mbox->m_out.numsectors; 839 } else { 840 adapter->nwrites[ldrv_num%0x80]++; 841 adapter->nwriteblocks[ldrv_num%0x80] += 842 mbox->m_out.numsectors; 843 } 844#endif 845 } 846 847 /* 848 * If it is a read command 849 */ 850 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 851 scb->dma_direction = PCI_DMA_FROMDEVICE; 852 } 853 else { 854 scb->dma_direction = PCI_DMA_TODEVICE; 855 } 856 857 /* Calculate Scatter-Gather info */ 858 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 859 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg); 860 861 return scb; 862 863#if MEGA_HAVE_CLUSTERING 864 case RESERVE: /* Fall through */ 865 case RELEASE: 866 867 /* 868 * Do we support clustering and is the support enabled 869 */ 870 if( ! adapter->has_cluster ) { 871 872 cmd->result = (DID_BAD_TARGET << 16); 873 cmd->scsi_done(cmd); 874 return NULL; 875 } 876 877 /* Allocate a SCB and initialize mailbox */ 878 if(!(scb = mega_allocate_scb(adapter, cmd))) { 879 *busy = 1; 880 return NULL; 881 } 882 883 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 884 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? 885 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 886 887 scb->raw_mbox[3] = ldrv_num; 888 889 scb->dma_direction = PCI_DMA_NONE; 890 891 return scb; 892#endif 893 894 default: 895 cmd->result = (DID_BAD_TARGET << 16); 896 cmd->scsi_done(cmd); 897 return NULL; 898 } 899 } 900 901 /* 902 * Passthru drive commands 903 */ 904 else { 905 /* Allocate a SCB and initialize passthru */ 906 if(!(scb = mega_allocate_scb(adapter, cmd))) { 907 *busy = 1; 908 return NULL; 909 } 910 911 mbox = (mbox_t *)scb->raw_mbox; 912 memset(mbox, 0, sizeof(scb->raw_mbox)); 913 914 if( adapter->support_ext_cdb ) { 915 916 epthru = mega_prepare_extpassthru(adapter, scb, cmd, 917 channel, target); 918 919 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 920 921 mbox->m_out.xferaddr = scb->epthru_dma_addr; 922 923 } 924 else { 925 926 pthru = mega_prepare_passthru(adapter, scb, cmd, 927 channel, target); 928 929 /* Initialize mailbox */ 930 if( adapter->has_64bit_addr ) { 931 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 932 } 933 else { 934 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 935 } 936 937 mbox->m_out.xferaddr = scb->pthru_dma_addr; 938 939 } 940 return scb; 941 } 942 return NULL; 943} 944 945 946/** 947 * mega_prepare_passthru() 948 * @adapter - pointer to our soft state 949 * @scb - our scsi control block 950 * @cmd - scsi command from the mid-layer 951 * @channel - actual channel on the controller 952 * @target - actual id on the controller. 953 * 954 * prepare a command for the scsi physical devices. 955 */ 956static mega_passthru * 957mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 958 int channel, int target) 959{ 960 mega_passthru *pthru; 961 962 pthru = scb->pthru; 963 memset(pthru, 0, sizeof (mega_passthru)); 964 965 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 966 pthru->timeout = 2; 967 968 pthru->ars = 1; 969 pthru->reqsenselen = 14; 970 pthru->islogical = 0; 971 972 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 973 974 pthru->target = (adapter->flag & BOARD_40LD) ? 975 (channel << 4) | target : target; 976 977 pthru->cdblen = cmd->cmd_len; 978 pthru->logdrv = cmd->device->lun; 979 980 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 981 982 /* Not sure about the direction */ 983 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 984 985 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 986 switch (cmd->cmnd[0]) { 987 case INQUIRY: 988 case READ_CAPACITY: 989 if(!(adapter->flag & (1L << cmd->device->channel))) { 990 991 printk(KERN_NOTICE 992 "scsi%d: scanning scsi channel %d [P%d] ", 993 adapter->host->host_no, 994 cmd->device->channel, channel); 995 printk("for physical devices.\n"); 996 997 adapter->flag |= (1L << cmd->device->channel); 998 } 999 /* Fall through */ 1000 default: 1001 pthru->numsgelements = mega_build_sglist(adapter, scb, 1002 &pthru->dataxferaddr, &pthru->dataxferlen); 1003 break; 1004 } 1005 return pthru; 1006} 1007 1008 1009/** 1010 * mega_prepare_extpassthru() 1011 * @adapter - pointer to our soft state 1012 * @scb - our scsi control block 1013 * @cmd - scsi command from the mid-layer 1014 * @channel - actual channel on the controller 1015 * @target - actual id on the controller. 1016 * 1017 * prepare a command for the scsi physical devices. This rountine prepares 1018 * commands for devices which can take extended CDBs (>10 bytes) 1019 */ 1020static mega_ext_passthru * 1021mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd, 1022 int channel, int target) 1023{ 1024 mega_ext_passthru *epthru; 1025 1026 epthru = scb->epthru; 1027 memset(epthru, 0, sizeof(mega_ext_passthru)); 1028 1029 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1030 epthru->timeout = 2; 1031 1032 epthru->ars = 1; 1033 epthru->reqsenselen = 14; 1034 epthru->islogical = 0; 1035 1036 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1037 epthru->target = (adapter->flag & BOARD_40LD) ? 1038 (channel << 4) | target : target; 1039 1040 epthru->cdblen = cmd->cmd_len; 1041 epthru->logdrv = cmd->device->lun; 1042 1043 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1044 1045 /* Not sure about the direction */ 1046 scb->dma_direction = PCI_DMA_BIDIRECTIONAL; 1047 1048 switch(cmd->cmnd[0]) { 1049 case INQUIRY: 1050 case READ_CAPACITY: 1051 if(!(adapter->flag & (1L << cmd->device->channel))) { 1052 1053 printk(KERN_NOTICE 1054 "scsi%d: scanning scsi channel %d [P%d] ", 1055 adapter->host->host_no, 1056 cmd->device->channel, channel); 1057 printk("for physical devices.\n"); 1058 1059 adapter->flag |= (1L << cmd->device->channel); 1060 } 1061 /* Fall through */ 1062 default: 1063 epthru->numsgelements = mega_build_sglist(adapter, scb, 1064 &epthru->dataxferaddr, &epthru->dataxferlen); 1065 break; 1066 } 1067 1068 return epthru; 1069} 1070 1071static void 1072__mega_runpendq(adapter_t *adapter) 1073{ 1074 scb_t *scb; 1075 struct list_head *pos, *next; 1076 1077 /* Issue any pending commands to the card */ 1078 list_for_each_safe(pos, next, &adapter->pending_list) { 1079 1080 scb = list_entry(pos, scb_t, list); 1081 1082 if( !(scb->state & SCB_ISSUED) ) { 1083 1084 if( issue_scb(adapter, scb) != 0 ) 1085 return; 1086 } 1087 } 1088 1089 return; 1090} 1091 1092 1093/** 1094 * issue_scb() 1095 * @adapter - pointer to our soft state 1096 * @scb - scsi control block 1097 * 1098 * Post a command to the card if the mailbox is available, otherwise return 1099 * busy. We also take the scb from the pending list if the mailbox is 1100 * available. 1101 */ 1102static int 1103issue_scb(adapter_t *adapter, scb_t *scb) 1104{ 1105 volatile mbox64_t *mbox64 = adapter->mbox64; 1106 volatile mbox_t *mbox = adapter->mbox; 1107 unsigned int i = 0; 1108 1109 if(unlikely(mbox->m_in.busy)) { 1110 do { 1111 udelay(1); 1112 i++; 1113 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1114 1115 if(mbox->m_in.busy) return -1; 1116 } 1117 1118 /* Copy mailbox data into host structure */ 1119 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1120 sizeof(struct mbox_out)); 1121 1122 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1123 mbox->m_in.busy = 1; /* Set busy */ 1124 1125 1126 /* 1127 * Increment the pending queue counter 1128 */ 1129 atomic_inc(&adapter->pend_cmds); 1130 1131 switch (mbox->m_out.cmd) { 1132 case MEGA_MBOXCMD_LREAD64: 1133 case MEGA_MBOXCMD_LWRITE64: 1134 case MEGA_MBOXCMD_PASSTHRU64: 1135 case MEGA_MBOXCMD_EXTPTHRU: 1136 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1137 mbox64->xfer_segment_hi = 0; 1138 mbox->m_out.xferaddr = 0xFFFFFFFF; 1139 break; 1140 default: 1141 mbox64->xfer_segment_lo = 0; 1142 mbox64->xfer_segment_hi = 0; 1143 } 1144 1145 /* 1146 * post the command 1147 */ 1148 scb->state |= SCB_ISSUED; 1149 1150 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1151 mbox->m_in.poll = 0; 1152 mbox->m_in.ack = 0; 1153 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1154 } 1155 else { 1156 irq_enable(adapter); 1157 issue_command(adapter); 1158 } 1159 1160 return 0; 1161} 1162 1163/* 1164 * Wait until the controller's mailbox is available 1165 */ 1166static inline int 1167mega_busywait_mbox (adapter_t *adapter) 1168{ 1169 if (adapter->mbox->m_in.busy) 1170 return __mega_busywait_mbox(adapter); 1171 return 0; 1172} 1173 1174/** 1175 * issue_scb_block() 1176 * @adapter - pointer to our soft state 1177 * @raw_mbox - the mailbox 1178 * 1179 * Issue a scb in synchronous and non-interrupt mode 1180 */ 1181static int 1182issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1183{ 1184 volatile mbox64_t *mbox64 = adapter->mbox64; 1185 volatile mbox_t *mbox = adapter->mbox; 1186 u8 byte; 1187 1188 /* Wait until mailbox is free */ 1189 if(mega_busywait_mbox (adapter)) 1190 goto bug_blocked_mailbox; 1191 1192 /* Copy mailbox data into host structure */ 1193 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1194 mbox->m_out.cmdid = 0xFE; 1195 mbox->m_in.busy = 1; 1196 1197 switch (raw_mbox[0]) { 1198 case MEGA_MBOXCMD_LREAD64: 1199 case MEGA_MBOXCMD_LWRITE64: 1200 case MEGA_MBOXCMD_PASSTHRU64: 1201 case MEGA_MBOXCMD_EXTPTHRU: 1202 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1203 mbox64->xfer_segment_hi = 0; 1204 mbox->m_out.xferaddr = 0xFFFFFFFF; 1205 break; 1206 default: 1207 mbox64->xfer_segment_lo = 0; 1208 mbox64->xfer_segment_hi = 0; 1209 } 1210 1211 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1212 mbox->m_in.poll = 0; 1213 mbox->m_in.ack = 0; 1214 mbox->m_in.numstatus = 0xFF; 1215 mbox->m_in.status = 0xFF; 1216 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1217 1218 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1219 cpu_relax(); 1220 1221 mbox->m_in.numstatus = 0xFF; 1222 1223 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1224 cpu_relax(); 1225 1226 mbox->m_in.poll = 0; 1227 mbox->m_in.ack = 0x77; 1228 1229 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1230 1231 while(RDINDOOR(adapter) & 0x2) 1232 cpu_relax(); 1233 } 1234 else { 1235 irq_disable(adapter); 1236 issue_command(adapter); 1237 1238 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1239 cpu_relax(); 1240 1241 set_irq_state(adapter, byte); 1242 irq_enable(adapter); 1243 irq_ack(adapter); 1244 } 1245 1246 return mbox->m_in.status; 1247 1248bug_blocked_mailbox: 1249 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n"); 1250 udelay (1000); 1251 return -1; 1252} 1253 1254 1255/** 1256 * megaraid_isr_iomapped() 1257 * @irq - irq 1258 * @devp - pointer to our soft state 1259 * 1260 * Interrupt service routine for io-mapped controllers. 1261 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1262 * and service the completed commands. 1263 */ 1264static irqreturn_t 1265megaraid_isr_iomapped(int irq, void *devp) 1266{ 1267 adapter_t *adapter = devp; 1268 unsigned long flags; 1269 u8 status; 1270 u8 nstatus; 1271 u8 completed[MAX_FIRMWARE_STATUS]; 1272 u8 byte; 1273 int handled = 0; 1274 1275 1276 /* 1277 * loop till F/W has more commands for us to complete. 1278 */ 1279 spin_lock_irqsave(&adapter->lock, flags); 1280 1281 do { 1282 /* Check if a valid interrupt is pending */ 1283 byte = irq_state(adapter); 1284 if( (byte & VALID_INTR_BYTE) == 0 ) { 1285 /* 1286 * No more pending commands 1287 */ 1288 goto out_unlock; 1289 } 1290 set_irq_state(adapter, byte); 1291 1292 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1293 == 0xFF) 1294 cpu_relax(); 1295 adapter->mbox->m_in.numstatus = 0xFF; 1296 1297 status = adapter->mbox->m_in.status; 1298 1299 /* 1300 * decrement the pending queue counter 1301 */ 1302 atomic_sub(nstatus, &adapter->pend_cmds); 1303 1304 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1305 nstatus); 1306 1307 /* Acknowledge interrupt */ 1308 irq_ack(adapter); 1309 1310 mega_cmd_done(adapter, completed, nstatus, status); 1311 1312 mega_rundoneq(adapter); 1313 1314 handled = 1; 1315 1316 /* Loop through any pending requests */ 1317 if(atomic_read(&adapter->quiescent) == 0) { 1318 mega_runpendq(adapter); 1319 } 1320 1321 } while(1); 1322 1323 out_unlock: 1324 1325 spin_unlock_irqrestore(&adapter->lock, flags); 1326 1327 return IRQ_RETVAL(handled); 1328} 1329 1330 1331/** 1332 * megaraid_isr_memmapped() 1333 * @irq - irq 1334 * @devp - pointer to our soft state 1335 * 1336 * Interrupt service routine for memory-mapped controllers. 1337 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1338 * and service the completed commands. 1339 */ 1340static irqreturn_t 1341megaraid_isr_memmapped(int irq, void *devp) 1342{ 1343 adapter_t *adapter = devp; 1344 unsigned long flags; 1345 u8 status; 1346 u32 dword = 0; 1347 u8 nstatus; 1348 u8 completed[MAX_FIRMWARE_STATUS]; 1349 int handled = 0; 1350 1351 1352 /* 1353 * loop till F/W has more commands for us to complete. 1354 */ 1355 spin_lock_irqsave(&adapter->lock, flags); 1356 1357 do { 1358 /* Check if a valid interrupt is pending */ 1359 dword = RDOUTDOOR(adapter); 1360 if(dword != 0x10001234) { 1361 /* 1362 * No more pending commands 1363 */ 1364 goto out_unlock; 1365 } 1366 WROUTDOOR(adapter, 0x10001234); 1367 1368 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1369 == 0xFF) { 1370 cpu_relax(); 1371 } 1372 adapter->mbox->m_in.numstatus = 0xFF; 1373 1374 status = adapter->mbox->m_in.status; 1375 1376 /* 1377 * decrement the pending queue counter 1378 */ 1379 atomic_sub(nstatus, &adapter->pend_cmds); 1380 1381 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1382 nstatus); 1383 1384 /* Acknowledge interrupt */ 1385 WRINDOOR(adapter, 0x2); 1386 1387 handled = 1; 1388 1389 while( RDINDOOR(adapter) & 0x02 ) 1390 cpu_relax(); 1391 1392 mega_cmd_done(adapter, completed, nstatus, status); 1393 1394 mega_rundoneq(adapter); 1395 1396 /* Loop through any pending requests */ 1397 if(atomic_read(&adapter->quiescent) == 0) { 1398 mega_runpendq(adapter); 1399 } 1400 1401 } while(1); 1402 1403 out_unlock: 1404 1405 spin_unlock_irqrestore(&adapter->lock, flags); 1406 1407 return IRQ_RETVAL(handled); 1408} 1409/** 1410 * mega_cmd_done() 1411 * @adapter - pointer to our soft state 1412 * @completed - array of ids of completed commands 1413 * @nstatus - number of completed commands 1414 * @status - status of the last command completed 1415 * 1416 * Complete the comamnds and call the scsi mid-layer callback hooks. 1417 */ 1418static void 1419mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1420{ 1421 mega_ext_passthru *epthru = NULL; 1422 struct scatterlist *sgl; 1423 Scsi_Cmnd *cmd = NULL; 1424 mega_passthru *pthru = NULL; 1425 mbox_t *mbox = NULL; 1426 u8 c; 1427 scb_t *scb; 1428 int islogical; 1429 int cmdid; 1430 int i; 1431 1432 /* 1433 * for all the commands completed, call the mid-layer callback routine 1434 * and free the scb. 1435 */ 1436 for( i = 0; i < nstatus; i++ ) { 1437 1438 cmdid = completed[i]; 1439 1440 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1441 scb = &adapter->int_scb; 1442 cmd = scb->cmd; 1443 mbox = (mbox_t *)scb->raw_mbox; 1444 1445 /* 1446 * Internal command interface do not fire the extended 1447 * passthru or 64-bit passthru 1448 */ 1449 pthru = scb->pthru; 1450 1451 } 1452 else { 1453 scb = &adapter->scb_list[cmdid]; 1454 1455 /* 1456 * Make sure f/w has completed a valid command 1457 */ 1458 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1459 printk(KERN_CRIT 1460 "megaraid: invalid command "); 1461 printk("Id %d, scb->state:%x, scsi cmd:%p\n", 1462 cmdid, scb->state, scb->cmd); 1463 1464 continue; 1465 } 1466 1467 /* 1468 * Was a abort issued for this command 1469 */ 1470 if( scb->state & SCB_ABORT ) { 1471 1472 printk(KERN_WARNING 1473 "megaraid: aborted cmd %lx[%x] complete.\n", 1474 scb->cmd->serial_number, scb->idx); 1475 1476 scb->cmd->result = (DID_ABORT << 16); 1477 1478 list_add_tail(SCSI_LIST(scb->cmd), 1479 &adapter->completed_list); 1480 1481 mega_free_scb(adapter, scb); 1482 1483 continue; 1484 } 1485 1486 /* 1487 * Was a reset issued for this command 1488 */ 1489 if( scb->state & SCB_RESET ) { 1490 1491 printk(KERN_WARNING 1492 "megaraid: reset cmd %lx[%x] complete.\n", 1493 scb->cmd->serial_number, scb->idx); 1494 1495 scb->cmd->result = (DID_RESET << 16); 1496 1497 list_add_tail(SCSI_LIST(scb->cmd), 1498 &adapter->completed_list); 1499 1500 mega_free_scb (adapter, scb); 1501 1502 continue; 1503 } 1504 1505 cmd = scb->cmd; 1506 pthru = scb->pthru; 1507 epthru = scb->epthru; 1508 mbox = (mbox_t *)scb->raw_mbox; 1509 1510#if MEGA_HAVE_STATS 1511 { 1512 1513 int logdrv = mbox->m_out.logdrv; 1514 1515 islogical = adapter->logdrv_chan[cmd->channel]; 1516 /* 1517 * Maintain an error counter for the logical drive. 1518 * Some application like SNMP agent need such 1519 * statistics 1520 */ 1521 if( status && islogical && (cmd->cmnd[0] == READ_6 || 1522 cmd->cmnd[0] == READ_10 || 1523 cmd->cmnd[0] == READ_12)) { 1524 /* 1525 * Logical drive number increases by 0x80 when 1526 * a logical drive is deleted 1527 */ 1528 adapter->rd_errors[logdrv%0x80]++; 1529 } 1530 1531 if( status && islogical && (cmd->cmnd[0] == WRITE_6 || 1532 cmd->cmnd[0] == WRITE_10 || 1533 cmd->cmnd[0] == WRITE_12)) { 1534 /* 1535 * Logical drive number increases by 0x80 when 1536 * a logical drive is deleted 1537 */ 1538 adapter->wr_errors[logdrv%0x80]++; 1539 } 1540 1541 } 1542#endif 1543 } 1544 1545 /* 1546 * Do not return the presence of hard disk on the channel so, 1547 * inquiry sent, and returned data==hard disk or removable 1548 * hard disk and not logical, request should return failure! - 1549 * PJ 1550 */ 1551 islogical = adapter->logdrv_chan[cmd->device->channel]; 1552 if( cmd->cmnd[0] == INQUIRY && !islogical ) { 1553 1554 if( cmd->use_sg ) { 1555 sgl = (struct scatterlist *) 1556 cmd->request_buffer; 1557 1558 if( sgl->page ) { 1559 c = *(unsigned char *) 1560 page_address((&sgl[0])->page) + 1561 (&sgl[0])->offset; 1562 } 1563 else { 1564 printk(KERN_WARNING 1565 "megaraid: invalid sg.\n"); 1566 c = 0; 1567 } 1568 } 1569 else { 1570 c = *(u8 *)cmd->request_buffer; 1571 } 1572 1573 if(IS_RAID_CH(adapter, cmd->device->channel) && 1574 ((c & 0x1F ) == TYPE_DISK)) { 1575 status = 0xF0; 1576 } 1577 } 1578 1579 /* clear result; otherwise, success returns corrupt value */ 1580 cmd->result = 0; 1581 1582 /* Convert MegaRAID status to Linux error code */ 1583 switch (status) { 1584 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1585 cmd->result |= (DID_OK << 16); 1586 break; 1587 1588 case 0x02: /* ERROR_ABORTED, i.e. 1589 SCSI_STATUS_CHECK_CONDITION */ 1590 1591 /* set sense_buffer and result fields */ 1592 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1593 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1594 1595 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1596 14); 1597 1598 cmd->result = (DRIVER_SENSE << 24) | 1599 (DID_OK << 16) | 1600 (CHECK_CONDITION << 1); 1601 } 1602 else { 1603 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1604 1605 memcpy(cmd->sense_buffer, 1606 epthru->reqsensearea, 14); 1607 1608 cmd->result = (DRIVER_SENSE << 24) | 1609 (DID_OK << 16) | 1610 (CHECK_CONDITION << 1); 1611 } else { 1612 cmd->sense_buffer[0] = 0x70; 1613 cmd->sense_buffer[2] = ABORTED_COMMAND; 1614 cmd->result |= (CHECK_CONDITION << 1); 1615 } 1616 } 1617 break; 1618 1619 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1620 SCSI_STATUS_BUSY */ 1621 cmd->result |= (DID_BUS_BUSY << 16) | status; 1622 break; 1623 1624 default: 1625#if MEGA_HAVE_CLUSTERING 1626 /* 1627 * If TEST_UNIT_READY fails, we know 1628 * MEGA_RESERVATION_STATUS failed 1629 */ 1630 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1631 cmd->result |= (DID_ERROR << 16) | 1632 (RESERVATION_CONFLICT << 1); 1633 } 1634 else 1635 /* 1636 * Error code returned is 1 if Reserve or Release 1637 * failed or the input parameter is invalid 1638 */ 1639 if( status == 1 && 1640 (cmd->cmnd[0] == RESERVE || 1641 cmd->cmnd[0] == RELEASE) ) { 1642 1643 cmd->result |= (DID_ERROR << 16) | 1644 (RESERVATION_CONFLICT << 1); 1645 } 1646 else 1647#endif 1648 cmd->result |= (DID_BAD_TARGET << 16)|status; 1649 } 1650 1651 /* 1652 * Only free SCBs for the commands coming down from the 1653 * mid-layer, not for which were issued internally 1654 * 1655 * For internal command, restore the status returned by the 1656 * firmware so that user can interpret it. 1657 */ 1658 if( cmdid == CMDID_INT_CMDS ) { /* internal command */ 1659 cmd->result = status; 1660 1661 /* 1662 * Remove the internal command from the pending list 1663 */ 1664 list_del_init(&scb->list); 1665 scb->state = SCB_FREE; 1666 } 1667 else { 1668 mega_free_scb(adapter, scb); 1669 } 1670 1671 /* Add Scsi_Command to end of completed queue */ 1672 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1673 } 1674} 1675 1676 1677/* 1678 * mega_runpendq() 1679 * 1680 * Run through the list of completed requests and finish it 1681 */ 1682static void 1683mega_rundoneq (adapter_t *adapter) 1684{ 1685 Scsi_Cmnd *cmd; 1686 struct list_head *pos; 1687 1688 list_for_each(pos, &adapter->completed_list) { 1689 1690 struct scsi_pointer* spos = (struct scsi_pointer *)pos; 1691 1692 cmd = list_entry(spos, Scsi_Cmnd, SCp); 1693 cmd->scsi_done(cmd); 1694 } 1695 1696 INIT_LIST_HEAD(&adapter->completed_list); 1697} 1698 1699 1700/* 1701 * Free a SCB structure 1702 * Note: We assume the scsi commands associated with this scb is not free yet. 1703 */ 1704static void 1705mega_free_scb(adapter_t *adapter, scb_t *scb) 1706{ 1707 unsigned long length; 1708 1709 switch( scb->dma_type ) { 1710 1711 case MEGA_DMA_TYPE_NONE: 1712 break; 1713 1714 case MEGA_BULK_DATA: 1715 if (scb->cmd->use_sg == 0) 1716 length = scb->cmd->request_bufflen; 1717 else { 1718 struct scatterlist *sgl = 1719 (struct scatterlist *)scb->cmd->request_buffer; 1720 length = sgl->length; 1721 } 1722 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata, 1723 length, scb->dma_direction); 1724 break; 1725 1726 case MEGA_SGLIST: 1727 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer, 1728 scb->cmd->use_sg, scb->dma_direction); 1729 break; 1730 1731 default: 1732 break; 1733 } 1734 1735 /* 1736 * Remove from the pending list 1737 */ 1738 list_del_init(&scb->list); 1739 1740 /* Link the scb back into free list */ 1741 scb->state = SCB_FREE; 1742 scb->cmd = NULL; 1743 1744 list_add(&scb->list, &adapter->free_list); 1745} 1746 1747 1748static int 1749__mega_busywait_mbox (adapter_t *adapter) 1750{ 1751 volatile mbox_t *mbox = adapter->mbox; 1752 long counter; 1753 1754 for (counter = 0; counter < 10000; counter++) { 1755 if (!mbox->m_in.busy) 1756 return 0; 1757 udelay(100); 1758 cond_resched(); 1759 } 1760 return -1; /* give up after 1 second */ 1761} 1762 1763/* 1764 * Copies data to SGLIST 1765 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1766 */ 1767static int 1768mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1769{ 1770 struct scatterlist *sgl; 1771 struct page *page; 1772 unsigned long offset; 1773 unsigned int length; 1774 Scsi_Cmnd *cmd; 1775 int sgcnt; 1776 int idx; 1777 1778 cmd = scb->cmd; 1779 1780 /* Scatter-gather not used */ 1781 if( cmd->use_sg == 0 || (cmd->use_sg == 1 && 1782 !adapter->has_64bit_addr)) { 1783 1784 if (cmd->use_sg == 0) { 1785 page = virt_to_page(cmd->request_buffer); 1786 offset = offset_in_page(cmd->request_buffer); 1787 length = cmd->request_bufflen; 1788 } else { 1789 sgl = (struct scatterlist *)cmd->request_buffer; 1790 page = sgl->page; 1791 offset = sgl->offset; 1792 length = sgl->length; 1793 } 1794 1795 scb->dma_h_bulkdata = pci_map_page(adapter->dev, 1796 page, offset, 1797 length, 1798 scb->dma_direction); 1799 scb->dma_type = MEGA_BULK_DATA; 1800 1801 /* 1802 * We need to handle special 64-bit commands that need a 1803 * minimum of 1 SG 1804 */ 1805 if( adapter->has_64bit_addr ) { 1806 scb->sgl64[0].address = scb->dma_h_bulkdata; 1807 scb->sgl64[0].length = length; 1808 *buf = (u32)scb->sgl_dma_addr; 1809 *len = (u32)length; 1810 return 1; 1811 } 1812 else { 1813 *buf = (u32)scb->dma_h_bulkdata; 1814 *len = (u32)length; 1815 } 1816 return 0; 1817 } 1818 1819 sgl = (struct scatterlist *)cmd->request_buffer; 1820 1821 /* 1822 * Copy Scatter-Gather list info into controller structure. 1823 * 1824 * The number of sg elements returned must not exceed our limit 1825 */ 1826 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg, 1827 scb->dma_direction); 1828 1829 scb->dma_type = MEGA_SGLIST; 1830 1831 BUG_ON(sgcnt > adapter->sglen); 1832 1833 *len = 0; 1834 1835 for( idx = 0; idx < sgcnt; idx++, sgl++ ) { 1836 1837 if( adapter->has_64bit_addr ) { 1838 scb->sgl64[idx].address = sg_dma_address(sgl); 1839 *len += scb->sgl64[idx].length = sg_dma_len(sgl); 1840 } 1841 else { 1842 scb->sgl[idx].address = sg_dma_address(sgl); 1843 *len += scb->sgl[idx].length = sg_dma_len(sgl); 1844 } 1845 } 1846 1847 /* Reset pointer and length fields */ 1848 *buf = scb->sgl_dma_addr; 1849 1850 /* Return count of SG requests */ 1851 return sgcnt; 1852} 1853 1854 1855/* 1856 * mega_8_to_40ld() 1857 * 1858 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1859 * Enquiry3 structures for later use 1860 */ 1861static void 1862mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1863 mega_product_info *product_info) 1864{ 1865 int i; 1866 1867 product_info->max_commands = inquiry->adapter_info.max_commands; 1868 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1869 product_info->nchannels = inquiry->adapter_info.nchannels; 1870 1871 for (i = 0; i < 4; i++) { 1872 product_info->fw_version[i] = 1873 inquiry->adapter_info.fw_version[i]; 1874 1875 product_info->bios_version[i] = 1876 inquiry->adapter_info.bios_version[i]; 1877 } 1878 enquiry3->cache_flush_interval = 1879 inquiry->adapter_info.cache_flush_interval; 1880 1881 product_info->dram_size = inquiry->adapter_info.dram_size; 1882 1883 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1884 1885 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1886 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1887 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1888 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1889 } 1890 1891 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1892 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1893} 1894 1895static inline void 1896mega_free_sgl(adapter_t *adapter) 1897{ 1898 scb_t *scb; 1899 int i; 1900 1901 for(i = 0; i < adapter->max_cmds; i++) { 1902 1903 scb = &adapter->scb_list[i]; 1904 1905 if( scb->sgl64 ) { 1906 pci_free_consistent(adapter->dev, 1907 sizeof(mega_sgl64) * adapter->sglen, 1908 scb->sgl64, 1909 scb->sgl_dma_addr); 1910 1911 scb->sgl64 = NULL; 1912 } 1913 1914 if( scb->pthru ) { 1915 pci_free_consistent(adapter->dev, sizeof(mega_passthru), 1916 scb->pthru, scb->pthru_dma_addr); 1917 1918 scb->pthru = NULL; 1919 } 1920 1921 if( scb->epthru ) { 1922 pci_free_consistent(adapter->dev, 1923 sizeof(mega_ext_passthru), 1924 scb->epthru, scb->epthru_dma_addr); 1925 1926 scb->epthru = NULL; 1927 } 1928 1929 } 1930} 1931 1932 1933/* 1934 * Get information about the card/driver 1935 */ 1936const char * 1937megaraid_info(struct Scsi_Host *host) 1938{ 1939 static char buffer[512]; 1940 adapter_t *adapter; 1941 1942 adapter = (adapter_t *)host->hostdata; 1943 1944 sprintf (buffer, 1945 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1946 adapter->fw_version, adapter->product_info.max_commands, 1947 adapter->host->max_id, adapter->host->max_channel, 1948 adapter->host->max_lun); 1949 return buffer; 1950} 1951 1952/* 1953 * Abort a previous SCSI request. Only commands on the pending list can be 1954 * aborted. All the commands issued to the F/W must complete. 1955 */ 1956static int 1957megaraid_abort(Scsi_Cmnd *cmd) 1958{ 1959 adapter_t *adapter; 1960 int rval; 1961 1962 adapter = (adapter_t *)cmd->device->host->hostdata; 1963 1964 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1965 1966 /* 1967 * This is required here to complete any completed requests 1968 * to be communicated over to the mid layer. 1969 */ 1970 mega_rundoneq(adapter); 1971 1972 return rval; 1973} 1974 1975 1976static int 1977megaraid_reset(struct scsi_cmnd *cmd) 1978{ 1979 adapter_t *adapter; 1980 megacmd_t mc; 1981 int rval; 1982 1983 adapter = (adapter_t *)cmd->device->host->hostdata; 1984 1985#if MEGA_HAVE_CLUSTERING 1986 mc.cmd = MEGA_CLUSTER_CMD; 1987 mc.opcode = MEGA_RESET_RESERVATIONS; 1988 1989 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1990 printk(KERN_WARNING 1991 "megaraid: reservation reset failed.\n"); 1992 } 1993 else { 1994 printk(KERN_INFO "megaraid: reservation reset.\n"); 1995 } 1996#endif 1997 1998 spin_lock_irq(&adapter->lock); 1999 2000 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 2001 2002 /* 2003 * This is required here to complete any completed requests 2004 * to be communicated over to the mid layer. 2005 */ 2006 mega_rundoneq(adapter); 2007 spin_unlock_irq(&adapter->lock); 2008 2009 return rval; 2010} 2011 2012/** 2013 * megaraid_abort_and_reset() 2014 * @adapter - megaraid soft state 2015 * @cmd - scsi command to be aborted or reset 2016 * @aor - abort or reset flag 2017 * 2018 * Try to locate the scsi command in the pending queue. If found and is not 2019 * issued to the controller, abort/reset it. Otherwise return failure 2020 */ 2021static int 2022megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor) 2023{ 2024 struct list_head *pos, *next; 2025 scb_t *scb; 2026 2027 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n", 2028 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number, 2029 cmd->cmnd[0], cmd->device->channel, 2030 cmd->device->id, cmd->device->lun); 2031 2032 if(list_empty(&adapter->pending_list)) 2033 return FALSE; 2034 2035 list_for_each_safe(pos, next, &adapter->pending_list) { 2036 2037 scb = list_entry(pos, scb_t, list); 2038 2039 if (scb->cmd == cmd) { /* Found command */ 2040 2041 scb->state |= aor; 2042 2043 /* 2044 * Check if this command has firmare owenership. If 2045 * yes, we cannot reset this command. Whenever, f/w 2046 * completes this command, we will return appropriate 2047 * status from ISR. 2048 */ 2049 if( scb->state & SCB_ISSUED ) { 2050 2051 printk(KERN_WARNING 2052 "megaraid: %s-%lx[%x], fw owner.\n", 2053 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2054 cmd->serial_number, scb->idx); 2055 2056 return FALSE; 2057 } 2058 else { 2059 2060 /* 2061 * Not yet issued! Remove from the pending 2062 * list 2063 */ 2064 printk(KERN_WARNING 2065 "megaraid: %s-%lx[%x], driver owner.\n", 2066 (aor==SCB_ABORT) ? "ABORTING":"RESET", 2067 cmd->serial_number, scb->idx); 2068 2069 mega_free_scb(adapter, scb); 2070 2071 if( aor == SCB_ABORT ) { 2072 cmd->result = (DID_ABORT << 16); 2073 } 2074 else { 2075 cmd->result = (DID_RESET << 16); 2076 } 2077 2078 list_add_tail(SCSI_LIST(cmd), 2079 &adapter->completed_list); 2080 2081 return TRUE; 2082 } 2083 } 2084 } 2085 2086 return FALSE; 2087} 2088 2089static inline int 2090make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2091{ 2092 *pdev = alloc_pci_dev(); 2093 2094 if( *pdev == NULL ) return -1; 2095 2096 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2097 2098 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) { 2099 kfree(*pdev); 2100 return -1; 2101 } 2102 2103 return 0; 2104} 2105 2106static inline void 2107free_local_pdev(struct pci_dev *pdev) 2108{ 2109 kfree(pdev); 2110} 2111 2112/** 2113 * mega_allocate_inquiry() 2114 * @dma_handle - handle returned for dma address 2115 * @pdev - handle to pci device 2116 * 2117 * allocates memory for inquiry structure 2118 */ 2119static inline void * 2120mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2121{ 2122 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle); 2123} 2124 2125 2126static inline void 2127mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2128{ 2129 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle); 2130} 2131 2132 2133#ifdef CONFIG_PROC_FS 2134/* Following code handles /proc fs */ 2135 2136#define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \ 2137 S_IRUSR | S_IFREG, \ 2138 controller_proc_dir_entry, \ 2139 func, adapter) 2140 2141/** 2142 * mega_create_proc_entry() 2143 * @index - index in soft state array 2144 * @parent - parent node for this /proc entry 2145 * 2146 * Creates /proc entries for our controllers. 2147 */ 2148static void 2149mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2150{ 2151 struct proc_dir_entry *controller_proc_dir_entry = NULL; 2152 u8 string[64] = { 0 }; 2153 adapter_t *adapter = hba_soft_state[index]; 2154 2155 sprintf(string, "hba%d", adapter->host->host_no); 2156 2157 controller_proc_dir_entry = 2158 adapter->controller_proc_dir_entry = proc_mkdir(string, parent); 2159 2160 if(!controller_proc_dir_entry) { 2161 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n"); 2162 return; 2163 } 2164 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config); 2165 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat); 2166 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox); 2167#if MEGA_HAVE_ENH_PROC 2168 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate); 2169 adapter->proc_battery = CREATE_READ_PROC("battery-status", 2170 proc_battery); 2171 2172 /* 2173 * Display each physical drive on its channel 2174 */ 2175 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0", 2176 proc_pdrv_ch0); 2177 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1", 2178 proc_pdrv_ch1); 2179 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2", 2180 proc_pdrv_ch2); 2181 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3", 2182 proc_pdrv_ch3); 2183 2184 /* 2185 * Display a set of up to 10 logical drive through each of following 2186 * /proc entries 2187 */ 2188 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9", 2189 proc_rdrv_10); 2190 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19", 2191 proc_rdrv_20); 2192 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29", 2193 proc_rdrv_30); 2194 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39", 2195 proc_rdrv_40); 2196#endif 2197} 2198 2199 2200/** 2201 * proc_read_config() 2202 * @page - buffer to write the data in 2203 * @start - where the actual data has been written in page 2204 * @offset - same meaning as the read system call 2205 * @count - same meaning as the read system call 2206 * @eof - set if no more data needs to be returned 2207 * @data - pointer to our soft state 2208 * 2209 * Display configuration information about the controller. 2210 */ 2211static int 2212proc_read_config(char *page, char **start, off_t offset, int count, int *eof, 2213 void *data) 2214{ 2215 2216 adapter_t *adapter = (adapter_t *)data; 2217 int len = 0; 2218 2219 len += sprintf(page+len, "%s", MEGARAID_VERSION); 2220 2221 if(adapter->product_info.product_name[0]) 2222 len += sprintf(page+len, "%s\n", 2223 adapter->product_info.product_name); 2224 2225 len += sprintf(page+len, "Controller Type: "); 2226 2227 if( adapter->flag & BOARD_MEMMAP ) { 2228 len += sprintf(page+len, 2229 "438/466/467/471/493/518/520/531/532\n"); 2230 } 2231 else { 2232 len += sprintf(page+len, 2233 "418/428/434\n"); 2234 } 2235 2236 if(adapter->flag & BOARD_40LD) { 2237 len += sprintf(page+len, 2238 "Controller Supports 40 Logical Drives\n"); 2239 } 2240 2241 if(adapter->flag & BOARD_64BIT) { 2242 len += sprintf(page+len, 2243 "Controller capable of 64-bit memory addressing\n"); 2244 } 2245 if( adapter->has_64bit_addr ) { 2246 len += sprintf(page+len, 2247 "Controller using 64-bit memory addressing\n"); 2248 } 2249 else { 2250 len += sprintf(page+len, 2251 "Controller is not using 64-bit memory addressing\n"); 2252 } 2253 2254 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base, 2255 adapter->host->irq); 2256 2257 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n", 2258 adapter->numldrv, adapter->product_info.nchannels); 2259 2260 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n", 2261 adapter->fw_version, adapter->bios_version, 2262 adapter->product_info.dram_size); 2263 2264 len += sprintf(page+len, 2265 "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2266 adapter->product_info.max_commands, adapter->max_cmds); 2267 2268 len += sprintf(page+len, "support_ext_cdb = %d\n", 2269 adapter->support_ext_cdb); 2270 len += sprintf(page+len, "support_random_del = %d\n", 2271 adapter->support_random_del); 2272 len += sprintf(page+len, "boot_ldrv_enabled = %d\n", 2273 adapter->boot_ldrv_enabled); 2274 len += sprintf(page+len, "boot_ldrv = %d\n", 2275 adapter->boot_ldrv); 2276 len += sprintf(page+len, "boot_pdrv_enabled = %d\n", 2277 adapter->boot_pdrv_enabled); 2278 len += sprintf(page+len, "boot_pdrv_ch = %d\n", 2279 adapter->boot_pdrv_ch); 2280 len += sprintf(page+len, "boot_pdrv_tgt = %d\n", 2281 adapter->boot_pdrv_tgt); 2282 len += sprintf(page+len, "quiescent = %d\n", 2283 atomic_read(&adapter->quiescent)); 2284 len += sprintf(page+len, "has_cluster = %d\n", 2285 adapter->has_cluster); 2286 2287 len += sprintf(page+len, "\nModule Parameters:\n"); 2288 len += sprintf(page+len, "max_cmd_per_lun = %d\n", 2289 max_cmd_per_lun); 2290 len += sprintf(page+len, "max_sectors_per_io = %d\n", 2291 max_sectors_per_io); 2292 2293 *eof = 1; 2294 2295 return len; 2296} 2297 2298 2299 2300/** 2301 * proc_read_stat() 2302 * @page - buffer to write the data in 2303 * @start - where the actual data has been written in page 2304 * @offset - same meaning as the read system call 2305 * @count - same meaning as the read system call 2306 * @eof - set if no more data needs to be returned 2307 * @data - pointer to our soft state 2308 * 2309 * Diaplay statistical information about the I/O activity. 2310 */ 2311static int 2312proc_read_stat(char *page, char **start, off_t offset, int count, int *eof, 2313 void *data) 2314{ 2315 adapter_t *adapter; 2316 int len; 2317 int i; 2318 2319 i = 0; /* avoid compilation warnings */ 2320 len = 0; 2321 adapter = (adapter_t *)data; 2322 2323 len = sprintf(page, "Statistical Information for this controller\n"); 2324 len += sprintf(page+len, "pend_cmds = %d\n", 2325 atomic_read(&adapter->pend_cmds)); 2326#if MEGA_HAVE_STATS 2327 for(i = 0; i < adapter->numldrv; i++) { 2328 len += sprintf(page+len, "Logical Drive %d:\n", i); 2329 2330 len += sprintf(page+len, 2331 "\tReads Issued = %lu, Writes Issued = %lu\n", 2332 adapter->nreads[i], adapter->nwrites[i]); 2333 2334 len += sprintf(page+len, 2335 "\tSectors Read = %lu, Sectors Written = %lu\n", 2336 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2337 2338 len += sprintf(page+len, 2339 "\tRead errors = %lu, Write errors = %lu\n\n", 2340 adapter->rd_errors[i], adapter->wr_errors[i]); 2341 } 2342#else 2343 len += sprintf(page+len, 2344 "IO and error counters not compiled in driver.\n"); 2345#endif 2346 2347 *eof = 1; 2348 2349 return len; 2350} 2351 2352 2353/** 2354 * proc_read_mbox() 2355 * @page - buffer to write the data in 2356 * @start - where the actual data has been written in page 2357 * @offset - same meaning as the read system call 2358 * @count - same meaning as the read system call 2359 * @eof - set if no more data needs to be returned 2360 * @data - pointer to our soft state 2361 * 2362 * Display mailbox information for the last command issued. This information 2363 * is good for debugging. 2364 */ 2365static int 2366proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof, 2367 void *data) 2368{ 2369 2370 adapter_t *adapter = (adapter_t *)data; 2371 volatile mbox_t *mbox = adapter->mbox; 2372 int len = 0; 2373 2374 len = sprintf(page, "Contents of Mail Box Structure\n"); 2375 len += sprintf(page+len, " Fw Command = 0x%02x\n", 2376 mbox->m_out.cmd); 2377 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n", 2378 mbox->m_out.cmdid); 2379 len += sprintf(page+len, " No of Sectors= %04d\n", 2380 mbox->m_out.numsectors); 2381 len += sprintf(page+len, " LBA = 0x%02x\n", 2382 mbox->m_out.lba); 2383 len += sprintf(page+len, " DTA = 0x%08x\n", 2384 mbox->m_out.xferaddr); 2385 len += sprintf(page+len, " Logical Drive= 0x%02x\n", 2386 mbox->m_out.logdrv); 2387 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n", 2388 mbox->m_out.numsgelements); 2389 len += sprintf(page+len, " Busy = %01x\n", 2390 mbox->m_in.busy); 2391 len += sprintf(page+len, " Status = 0x%02x\n", 2392 mbox->m_in.status); 2393 2394 *eof = 1; 2395 2396 return len; 2397} 2398 2399 2400/** 2401 * proc_rebuild_rate() 2402 * @page - buffer to write the data in 2403 * @start - where the actual data has been written in page 2404 * @offset - same meaning as the read system call 2405 * @count - same meaning as the read system call 2406 * @eof - set if no more data needs to be returned 2407 * @data - pointer to our soft state 2408 * 2409 * Display current rebuild rate 2410 */ 2411static int 2412proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof, 2413 void *data) 2414{ 2415 adapter_t *adapter = (adapter_t *)data; 2416 dma_addr_t dma_handle; 2417 caddr_t inquiry; 2418 struct pci_dev *pdev; 2419 int len = 0; 2420 2421 if( make_local_pdev(adapter, &pdev) != 0 ) { 2422 *eof = 1; 2423 return len; 2424 } 2425 2426 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2427 free_local_pdev(pdev); 2428 *eof = 1; 2429 return len; 2430 } 2431 2432 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2433 2434 len = sprintf(page, "Adapter inquiry failed.\n"); 2435 2436 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2437 2438 mega_free_inquiry(inquiry, dma_handle, pdev); 2439 2440 free_local_pdev(pdev); 2441 2442 *eof = 1; 2443 2444 return len; 2445 } 2446 2447 if( adapter->flag & BOARD_40LD ) { 2448 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2449 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2450 } 2451 else { 2452 len = sprintf(page, "Rebuild Rate: [%d%%]\n", 2453 ((mraid_ext_inquiry *) 2454 inquiry)->raid_inq.adapter_info.rebuild_rate); 2455 } 2456 2457 2458 mega_free_inquiry(inquiry, dma_handle, pdev); 2459 2460 free_local_pdev(pdev); 2461 2462 *eof = 1; 2463 2464 return len; 2465} 2466 2467 2468/** 2469 * proc_battery() 2470 * @page - buffer to write the data in 2471 * @start - where the actual data has been written in page 2472 * @offset - same meaning as the read system call 2473 * @count - same meaning as the read system call 2474 * @eof - set if no more data needs to be returned 2475 * @data - pointer to our soft state 2476 * 2477 * Display information about the battery module on the controller. 2478 */ 2479static int 2480proc_battery(char *page, char **start, off_t offset, int count, int *eof, 2481 void *data) 2482{ 2483 adapter_t *adapter = (adapter_t *)data; 2484 dma_addr_t dma_handle; 2485 caddr_t inquiry; 2486 struct pci_dev *pdev; 2487 u8 battery_status = 0; 2488 char str[256]; 2489 int len = 0; 2490 2491 if( make_local_pdev(adapter, &pdev) != 0 ) { 2492 *eof = 1; 2493 return len; 2494 } 2495 2496 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2497 free_local_pdev(pdev); 2498 *eof = 1; 2499 return len; 2500 } 2501 2502 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2503 2504 len = sprintf(page, "Adapter inquiry failed.\n"); 2505 2506 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2507 2508 mega_free_inquiry(inquiry, dma_handle, pdev); 2509 2510 free_local_pdev(pdev); 2511 2512 *eof = 1; 2513 2514 return len; 2515 } 2516 2517 if( adapter->flag & BOARD_40LD ) { 2518 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2519 } 2520 else { 2521 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2522 raid_inq.adapter_info.battery_status; 2523 } 2524 2525 /* 2526 * Decode the battery status 2527 */ 2528 sprintf(str, "Battery Status:[%d]", battery_status); 2529 2530 if(battery_status == MEGA_BATT_CHARGE_DONE) 2531 strcat(str, " Charge Done"); 2532 2533 if(battery_status & MEGA_BATT_MODULE_MISSING) 2534 strcat(str, " Module Missing"); 2535 2536 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2537 strcat(str, " Low Voltage"); 2538 2539 if(battery_status & MEGA_BATT_TEMP_HIGH) 2540 strcat(str, " Temperature High"); 2541 2542 if(battery_status & MEGA_BATT_PACK_MISSING) 2543 strcat(str, " Pack Missing"); 2544 2545 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2546 strcat(str, " Charge In-progress"); 2547 2548 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2549 strcat(str, " Charge Fail"); 2550 2551 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2552 strcat(str, " Cycles Exceeded"); 2553 2554 len = sprintf(page, "%s\n", str); 2555 2556 2557 mega_free_inquiry(inquiry, dma_handle, pdev); 2558 2559 free_local_pdev(pdev); 2560 2561 *eof = 1; 2562 2563 return len; 2564} 2565 2566 2567/** 2568 * proc_pdrv_ch0() 2569 * @page - buffer to write the data in 2570 * @start - where the actual data has been written in page 2571 * @offset - same meaning as the read system call 2572 * @count - same meaning as the read system call 2573 * @eof - set if no more data needs to be returned 2574 * @data - pointer to our soft state 2575 * 2576 * Display information about the physical drives on physical channel 0. 2577 */ 2578static int 2579proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof, 2580 void *data) 2581{ 2582 adapter_t *adapter = (adapter_t *)data; 2583 2584 *eof = 1; 2585 2586 return (proc_pdrv(adapter, page, 0)); 2587} 2588 2589 2590/** 2591 * proc_pdrv_ch1() 2592 * @page - buffer to write the data in 2593 * @start - where the actual data has been written in page 2594 * @offset - same meaning as the read system call 2595 * @count - same meaning as the read system call 2596 * @eof - set if no more data needs to be returned 2597 * @data - pointer to our soft state 2598 * 2599 * Display information about the physical drives on physical channel 1. 2600 */ 2601static int 2602proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof, 2603 void *data) 2604{ 2605 adapter_t *adapter = (adapter_t *)data; 2606 2607 *eof = 1; 2608 2609 return (proc_pdrv(adapter, page, 1)); 2610} 2611 2612 2613/** 2614 * proc_pdrv_ch2() 2615 * @page - buffer to write the data in 2616 * @start - where the actual data has been written in page 2617 * @offset - same meaning as the read system call 2618 * @count - same meaning as the read system call 2619 * @eof - set if no more data needs to be returned 2620 * @data - pointer to our soft state 2621 * 2622 * Display information about the physical drives on physical channel 2. 2623 */ 2624static int 2625proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof, 2626 void *data) 2627{ 2628 adapter_t *adapter = (adapter_t *)data; 2629 2630 *eof = 1; 2631 2632 return (proc_pdrv(adapter, page, 2)); 2633} 2634 2635 2636/** 2637 * proc_pdrv_ch3() 2638 * @page - buffer to write the data in 2639 * @start - where the actual data has been written in page 2640 * @offset - same meaning as the read system call 2641 * @count - same meaning as the read system call 2642 * @eof - set if no more data needs to be returned 2643 * @data - pointer to our soft state 2644 * 2645 * Display information about the physical drives on physical channel 3. 2646 */ 2647static int 2648proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof, 2649 void *data) 2650{ 2651 adapter_t *adapter = (adapter_t *)data; 2652 2653 *eof = 1; 2654 2655 return (proc_pdrv(adapter, page, 3)); 2656} 2657 2658 2659/** 2660 * proc_pdrv() 2661 * @page - buffer to write the data in 2662 * @adapter - pointer to our soft state 2663 * 2664 * Display information about the physical drives. 2665 */ 2666static int 2667proc_pdrv(adapter_t *adapter, char *page, int channel) 2668{ 2669 dma_addr_t dma_handle; 2670 char *scsi_inq; 2671 dma_addr_t scsi_inq_dma_handle; 2672 caddr_t inquiry; 2673 struct pci_dev *pdev; 2674 u8 *pdrv_state; 2675 u8 state; 2676 int tgt; 2677 int max_channels; 2678 int len = 0; 2679 char str[80]; 2680 int i; 2681 2682 if( make_local_pdev(adapter, &pdev) != 0 ) { 2683 return len; 2684 } 2685 2686 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2687 goto free_pdev; 2688 } 2689 2690 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2691 len = sprintf(page, "Adapter inquiry failed.\n"); 2692 2693 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2694 2695 goto free_inquiry; 2696 } 2697 2698 2699 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle); 2700 2701 if( scsi_inq == NULL ) { 2702 len = sprintf(page, "memory not available for scsi inq.\n"); 2703 2704 goto free_inquiry; 2705 } 2706 2707 if( adapter->flag & BOARD_40LD ) { 2708 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2709 } 2710 else { 2711 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2712 raid_inq.pdrv_info.pdrv_state; 2713 } 2714 2715 max_channels = adapter->product_info.nchannels; 2716 2717 if( channel >= max_channels ) { 2718 goto free_pci; 2719 } 2720 2721 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2722 2723 i = channel*16 + tgt; 2724 2725 state = *(pdrv_state + i); 2726 2727 switch( state & 0x0F ) { 2728 2729 case PDRV_ONLINE: 2730 sprintf(str, 2731 "Channel:%2d Id:%2d State: Online", 2732 channel, tgt); 2733 break; 2734 2735 case PDRV_FAILED: 2736 sprintf(str, 2737 "Channel:%2d Id:%2d State: Failed", 2738 channel, tgt); 2739 break; 2740 2741 case PDRV_RBLD: 2742 sprintf(str, 2743 "Channel:%2d Id:%2d State: Rebuild", 2744 channel, tgt); 2745 break; 2746 2747 case PDRV_HOTSPARE: 2748 sprintf(str, 2749 "Channel:%2d Id:%2d State: Hot spare", 2750 channel, tgt); 2751 break; 2752 2753 default: 2754 sprintf(str, 2755 "Channel:%2d Id:%2d State: Un-configured", 2756 channel, tgt); 2757 break; 2758 2759 } 2760 2761 /* 2762 * This interface displays inquiries for disk drives 2763 * only. Inquries for logical drives and non-disk 2764 * devices are available through /proc/scsi/scsi 2765 */ 2766 memset(scsi_inq, 0, 256); 2767 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2768 scsi_inq_dma_handle) || 2769 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2770 continue; 2771 } 2772 2773 /* 2774 * Check for overflow. We print less than 240 2775 * characters for inquiry 2776 */ 2777 if( (len + 240) >= PAGE_SIZE ) break; 2778 2779 len += sprintf(page+len, "%s.\n", str); 2780 2781 len += mega_print_inquiry(page+len, scsi_inq); 2782 } 2783 2784free_pci: 2785 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle); 2786free_inquiry: 2787 mega_free_inquiry(inquiry, dma_handle, pdev); 2788free_pdev: 2789 free_local_pdev(pdev); 2790 2791 return len; 2792} 2793 2794 2795/* 2796 * Display scsi inquiry 2797 */ 2798static int 2799mega_print_inquiry(char *page, char *scsi_inq) 2800{ 2801 int len = 0; 2802 int i; 2803 2804 len = sprintf(page, " Vendor: "); 2805 for( i = 8; i < 16; i++ ) { 2806 len += sprintf(page+len, "%c", scsi_inq[i]); 2807 } 2808 2809 len += sprintf(page+len, " Model: "); 2810 2811 for( i = 16; i < 32; i++ ) { 2812 len += sprintf(page+len, "%c", scsi_inq[i]); 2813 } 2814 2815 len += sprintf(page+len, " Rev: "); 2816 2817 for( i = 32; i < 36; i++ ) { 2818 len += sprintf(page+len, "%c", scsi_inq[i]); 2819 } 2820 2821 len += sprintf(page+len, "\n"); 2822 2823 i = scsi_inq[0] & 0x1f; 2824 2825 len += sprintf(page+len, " Type: %s ", scsi_device_type(i)); 2826 2827 len += sprintf(page+len, 2828 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07); 2829 2830 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2831 len += sprintf(page+len, " CCS\n"); 2832 else 2833 len += sprintf(page+len, "\n"); 2834 2835 return len; 2836} 2837 2838 2839/** 2840 * proc_rdrv_10() 2841 * @page - buffer to write the data in 2842 * @start - where the actual data has been written in page 2843 * @offset - same meaning as the read system call 2844 * @count - same meaning as the read system call 2845 * @eof - set if no more data needs to be returned 2846 * @data - pointer to our soft state 2847 * 2848 * Display real time information about the logical drives 0 through 9. 2849 */ 2850static int 2851proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof, 2852 void *data) 2853{ 2854 adapter_t *adapter = (adapter_t *)data; 2855 2856 *eof = 1; 2857 2858 return (proc_rdrv(adapter, page, 0, 9)); 2859} 2860 2861 2862/** 2863 * proc_rdrv_20() 2864 * @page - buffer to write the data in 2865 * @start - where the actual data has been written in page 2866 * @offset - same meaning as the read system call 2867 * @count - same meaning as the read system call 2868 * @eof - set if no more data needs to be returned 2869 * @data - pointer to our soft state 2870 * 2871 * Display real time information about the logical drives 0 through 9. 2872 */ 2873static int 2874proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof, 2875 void *data) 2876{ 2877 adapter_t *adapter = (adapter_t *)data; 2878 2879 *eof = 1; 2880 2881 return (proc_rdrv(adapter, page, 10, 19)); 2882} 2883 2884 2885/** 2886 * proc_rdrv_30() 2887 * @page - buffer to write the data in 2888 * @start - where the actual data has been written in page 2889 * @offset - same meaning as the read system call 2890 * @count - same meaning as the read system call 2891 * @eof - set if no more data needs to be returned 2892 * @data - pointer to our soft state 2893 * 2894 * Display real time information about the logical drives 0 through 9. 2895 */ 2896static int 2897proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof, 2898 void *data) 2899{ 2900 adapter_t *adapter = (adapter_t *)data; 2901 2902 *eof = 1; 2903 2904 return (proc_rdrv(adapter, page, 20, 29)); 2905} 2906 2907 2908/** 2909 * proc_rdrv_40() 2910 * @page - buffer to write the data in 2911 * @start - where the actual data has been written in page 2912 * @offset - same meaning as the read system call 2913 * @count - same meaning as the read system call 2914 * @eof - set if no more data needs to be returned 2915 * @data - pointer to our soft state 2916 * 2917 * Display real time information about the logical drives 0 through 9. 2918 */ 2919static int 2920proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof, 2921 void *data) 2922{ 2923 adapter_t *adapter = (adapter_t *)data; 2924 2925 *eof = 1; 2926 2927 return (proc_rdrv(adapter, page, 30, 39)); 2928} 2929 2930 2931/** 2932 * proc_rdrv() 2933 * @page - buffer to write the data in 2934 * @adapter - pointer to our soft state 2935 * @start - starting logical drive to display 2936 * @end - ending logical drive to display 2937 * 2938 * We do not print the inquiry information since its already available through 2939 * /proc/scsi/scsi interface 2940 */ 2941static int 2942proc_rdrv(adapter_t *adapter, char *page, int start, int end ) 2943{ 2944 dma_addr_t dma_handle; 2945 logdrv_param *lparam; 2946 megacmd_t mc; 2947 char *disk_array; 2948 dma_addr_t disk_array_dma_handle; 2949 caddr_t inquiry; 2950 struct pci_dev *pdev; 2951 u8 *rdrv_state; 2952 int num_ldrv; 2953 u32 array_sz; 2954 int len = 0; 2955 int i; 2956 2957 if( make_local_pdev(adapter, &pdev) != 0 ) { 2958 return len; 2959 } 2960 2961 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) { 2962 free_local_pdev(pdev); 2963 return len; 2964 } 2965 2966 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2967 2968 len = sprintf(page, "Adapter inquiry failed.\n"); 2969 2970 printk(KERN_WARNING "megaraid: inquiry failed.\n"); 2971 2972 mega_free_inquiry(inquiry, dma_handle, pdev); 2973 2974 free_local_pdev(pdev); 2975 2976 return len; 2977 } 2978 2979 memset(&mc, 0, sizeof(megacmd_t)); 2980 2981 if( adapter->flag & BOARD_40LD ) { 2982 array_sz = sizeof(disk_array_40ld); 2983 2984 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2985 2986 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2987 } 2988 else { 2989 array_sz = sizeof(disk_array_8ld); 2990 2991 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2992 raid_inq.logdrv_info.ldrv_state; 2993 2994 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2995 raid_inq.logdrv_info.num_ldrv; 2996 } 2997 2998 disk_array = pci_alloc_consistent(pdev, array_sz, 2999 &disk_array_dma_handle); 3000 3001 if( disk_array == NULL ) { 3002 len = sprintf(page, "memory not available.\n"); 3003 3004 mega_free_inquiry(inquiry, dma_handle, pdev); 3005 3006 free_local_pdev(pdev); 3007 3008 return len; 3009 } 3010 3011 mc.xferaddr = (u32)disk_array_dma_handle; 3012 3013 if( adapter->flag & BOARD_40LD ) { 3014 mc.cmd = FC_NEW_CONFIG; 3015 mc.opcode = OP_DCMD_READ_CONFIG; 3016 3017 if( mega_internal_command(adapter, &mc, NULL) ) { 3018 3019 len = sprintf(page, "40LD read config failed.\n"); 3020 3021 mega_free_inquiry(inquiry, dma_handle, pdev); 3022 3023 pci_free_consistent(pdev, array_sz, disk_array, 3024 disk_array_dma_handle); 3025 3026 free_local_pdev(pdev); 3027 3028 return len; 3029 } 3030 3031 } 3032 else { 3033 mc.cmd = NEW_READ_CONFIG_8LD; 3034 3035 if( mega_internal_command(adapter, &mc, NULL) ) { 3036 3037 mc.cmd = READ_CONFIG_8LD; 3038 3039 if( mega_internal_command(adapter, &mc, 3040 NULL) ){ 3041 3042 len = sprintf(page, 3043 "8LD read config failed.\n"); 3044 3045 mega_free_inquiry(inquiry, dma_handle, pdev); 3046 3047 pci_free_consistent(pdev, array_sz, 3048 disk_array, 3049 disk_array_dma_handle); 3050 3051 free_local_pdev(pdev); 3052 3053 return len; 3054 } 3055 } 3056 } 3057 3058 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 3059 3060 if( adapter->flag & BOARD_40LD ) { 3061 lparam = 3062 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 3063 } 3064 else { 3065 lparam = 3066 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 3067 } 3068 3069 /* 3070 * Check for overflow. We print less than 240 characters for 3071 * information about each logical drive. 3072 */ 3073 if( (len + 240) >= PAGE_SIZE ) break; 3074 3075 len += sprintf(page+len, "Logical drive:%2d:, ", i); 3076 3077 switch( rdrv_state[i] & 0x0F ) { 3078 case RDRV_OFFLINE: 3079 len += sprintf(page+len, "state: offline"); 3080 break; 3081 3082 case RDRV_DEGRADED: 3083 len += sprintf(page+len, "state: degraded"); 3084 break; 3085 3086 case RDRV_OPTIMAL: 3087 len += sprintf(page+len, "state: optimal"); 3088 break; 3089 3090 case RDRV_DELETED: 3091 len += sprintf(page+len, "state: deleted"); 3092 break; 3093 3094 default: 3095 len += sprintf(page+len, "state: unknown"); 3096 break; 3097 } 3098 3099 /* 3100 * Check if check consistency or initialization is going on 3101 * for this logical drive. 3102 */ 3103 if( (rdrv_state[i] & 0xF0) == 0x20 ) { 3104 len += sprintf(page+len, 3105 ", check-consistency in progress"); 3106 } 3107 else if( (rdrv_state[i] & 0xF0) == 0x10 ) { 3108 len += sprintf(page+len, 3109 ", initialization in progress"); 3110 } 3111 3112 len += sprintf(page+len, "\n"); 3113 3114 len += sprintf(page+len, "Span depth:%3d, ", 3115 lparam->span_depth); 3116 3117 len += sprintf(page+len, "RAID level:%3d, ", 3118 lparam->level); 3119 3120 len += sprintf(page+len, "Stripe size:%3d, ", 3121 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 3122 3123 len += sprintf(page+len, "Row size:%3d\n", 3124 lparam->row_size); 3125 3126 3127 len += sprintf(page+len, "Read Policy: "); 3128 3129 switch(lparam->read_ahead) { 3130 3131 case NO_READ_AHEAD: 3132 len += sprintf(page+len, "No read ahead, "); 3133 break; 3134 3135 case READ_AHEAD: 3136 len += sprintf(page+len, "Read ahead, "); 3137 break; 3138 3139 case ADAP_READ_AHEAD: 3140 len += sprintf(page+len, "Adaptive, "); 3141 break; 3142 3143 } 3144 3145 len += sprintf(page+len, "Write Policy: "); 3146 3147 switch(lparam->write_mode) { 3148 3149 case WRMODE_WRITE_THRU: 3150 len += sprintf(page+len, "Write thru, "); 3151 break; 3152 3153 case WRMODE_WRITE_BACK: 3154 len += sprintf(page+len, "Write back, "); 3155 break; 3156 } 3157 3158 len += sprintf(page+len, "Cache Policy: "); 3159 3160 switch(lparam->direct_io) { 3161 3162 case CACHED_IO: 3163 len += sprintf(page+len, "Cached IO\n\n"); 3164 break; 3165 3166 case DIRECT_IO: 3167 len += sprintf(page+len, "Direct IO\n\n"); 3168 break; 3169 } 3170 } 3171 3172 mega_free_inquiry(inquiry, dma_handle, pdev); 3173 3174 pci_free_consistent(pdev, array_sz, disk_array, 3175 disk_array_dma_handle); 3176 3177 free_local_pdev(pdev); 3178 3179 return len; 3180} 3181#else 3182static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 3183{ 3184} 3185#endif 3186 3187 3188/** 3189 * megaraid_biosparam() 3190 * 3191 * Return the disk geometry for a particular disk 3192 */ 3193static int 3194megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 3195 sector_t capacity, int geom[]) 3196{ 3197 adapter_t *adapter; 3198 unsigned char *bh; 3199 int heads; 3200 int sectors; 3201 int cylinders; 3202 int rval; 3203 3204 /* Get pointer to host config structure */ 3205 adapter = (adapter_t *)sdev->host->hostdata; 3206 3207 if (IS_RAID_CH(adapter, sdev->channel)) { 3208 /* Default heads (64) & sectors (32) */ 3209 heads = 64; 3210 sectors = 32; 3211 cylinders = (ulong)capacity / (heads * sectors); 3212 3213 /* 3214 * Handle extended translation size for logical drives 3215 * > 1Gb 3216 */ 3217 if ((ulong)capacity >= 0x200000) { 3218 heads = 255; 3219 sectors = 63; 3220 cylinders = (ulong)capacity / (heads * sectors); 3221 } 3222 3223 /* return result */ 3224 geom[0] = heads; 3225 geom[1] = sectors; 3226 geom[2] = cylinders; 3227 } 3228 else { 3229 bh = scsi_bios_ptable(bdev); 3230 3231 if( bh ) { 3232 rval = scsi_partsize(bh, capacity, 3233 &geom[2], &geom[0], &geom[1]); 3234 kfree(bh); 3235 if( rval != -1 ) 3236 return rval; 3237 } 3238 3239 printk(KERN_INFO 3240 "megaraid: invalid partition on this disk on channel %d\n", 3241 sdev->channel); 3242 3243 /* Default heads (64) & sectors (32) */ 3244 heads = 64; 3245 sectors = 32; 3246 cylinders = (ulong)capacity / (heads * sectors); 3247 3248 /* Handle extended translation size for logical drives > 1Gb */ 3249 if ((ulong)capacity >= 0x200000) { 3250 heads = 255; 3251 sectors = 63; 3252 cylinders = (ulong)capacity / (heads * sectors); 3253 } 3254 3255 /* return result */ 3256 geom[0] = heads; 3257 geom[1] = sectors; 3258 geom[2] = cylinders; 3259 } 3260 3261 return 0; 3262} 3263 3264/** 3265 * mega_init_scb() 3266 * @adapter - pointer to our soft state 3267 * 3268 * Allocate memory for the various pointers in the scb structures: 3269 * scatter-gather list pointer, passthru and extended passthru structure 3270 * pointers. 3271 */ 3272static int 3273mega_init_scb(adapter_t *adapter) 3274{ 3275 scb_t *scb; 3276 int i; 3277 3278 for( i = 0; i < adapter->max_cmds; i++ ) { 3279 3280 scb = &adapter->scb_list[i]; 3281 3282 scb->sgl64 = NULL; 3283 scb->sgl = NULL; 3284 scb->pthru = NULL; 3285 scb->epthru = NULL; 3286 } 3287 3288 for( i = 0; i < adapter->max_cmds; i++ ) { 3289 3290 scb = &adapter->scb_list[i]; 3291 3292 scb->idx = i; 3293 3294 scb->sgl64 = pci_alloc_consistent(adapter->dev, 3295 sizeof(mega_sgl64) * adapter->sglen, 3296 &scb->sgl_dma_addr); 3297 3298 scb->sgl = (mega_sglist *)scb->sgl64; 3299 3300 if( !scb->sgl ) { 3301 printk(KERN_WARNING "RAID: Can't allocate sglist.\n"); 3302 mega_free_sgl(adapter); 3303 return -1; 3304 } 3305 3306 scb->pthru = pci_alloc_consistent(adapter->dev, 3307 sizeof(mega_passthru), 3308 &scb->pthru_dma_addr); 3309 3310 if( !scb->pthru ) { 3311 printk(KERN_WARNING "RAID: Can't allocate passthru.\n"); 3312 mega_free_sgl(adapter); 3313 return -1; 3314 } 3315 3316 scb->epthru = pci_alloc_consistent(adapter->dev, 3317 sizeof(mega_ext_passthru), 3318 &scb->epthru_dma_addr); 3319 3320 if( !scb->epthru ) { 3321 printk(KERN_WARNING 3322 "Can't allocate extended passthru.\n"); 3323 mega_free_sgl(adapter); 3324 return -1; 3325 } 3326 3327 3328 scb->dma_type = MEGA_DMA_TYPE_NONE; 3329 3330 /* 3331 * Link to free list 3332 * lock not required since we are loading the driver, so no 3333 * commands possible right now. 3334 */ 3335 scb->state = SCB_FREE; 3336 scb->cmd = NULL; 3337 list_add(&scb->list, &adapter->free_list); 3338 } 3339 3340 return 0; 3341} 3342 3343 3344/** 3345 * megadev_open() 3346 * @inode - unused 3347 * @filep - unused 3348 * 3349 * Routines for the character/ioctl interface to the driver. Find out if this 3350 * is a valid open. If yes, increment the module use count so that it cannot 3351 * be unloaded. 3352 */ 3353static int 3354megadev_open (struct inode *inode, struct file *filep) 3355{ 3356 /* 3357 * Only allow superuser to access private ioctl interface 3358 */ 3359 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 3360 3361 return 0; 3362} 3363 3364 3365/** 3366 * megadev_ioctl() 3367 * @inode - Our device inode 3368 * @filep - unused 3369 * @cmd - ioctl command 3370 * @arg - user buffer 3371 * 3372 * ioctl entry point for our private ioctl interface. We move the data in from 3373 * the user space, prepare the command (if necessary, convert the old MIMD 3374 * ioctl to new ioctl command), and issue a synchronous command to the 3375 * controller. 3376 */ 3377static int 3378megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, 3379 unsigned long arg) 3380{ 3381 adapter_t *adapter; 3382 nitioctl_t uioc; 3383 int adapno; 3384 int rval; 3385 mega_passthru __user *upthru; /* user address for passthru */ 3386 mega_passthru *pthru; /* copy user passthru here */ 3387 dma_addr_t pthru_dma_hndl; 3388 void *data = NULL; /* data to be transferred */ 3389 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 3390 megacmd_t mc; 3391 megastat_t __user *ustats; 3392 int num_ldrv; 3393 u32 uxferaddr = 0; 3394 struct pci_dev *pdev; 3395 3396 ustats = NULL; /* avoid compilation warnings */ 3397 num_ldrv = 0; 3398 3399 /* 3400 * Make sure only USCSICMD are issued through this interface. 3401 * MIMD application would still fire different command. 3402 */ 3403 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 3404 return -EINVAL; 3405 } 3406 3407 /* 3408 * Check and convert a possible MIMD command to NIT command. 3409 * mega_m_to_n() copies the data from the user space, so we do not 3410 * have to do it here. 3411 * NOTE: We will need some user address to copyout the data, therefore 3412 * the inteface layer will also provide us with the required user 3413 * addresses. 3414 */ 3415 memset(&uioc, 0, sizeof(nitioctl_t)); 3416 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3417 return rval; 3418 3419 3420 switch( uioc.opcode ) { 3421 3422 case GET_DRIVER_VER: 3423 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3424 return (-EFAULT); 3425 3426 break; 3427 3428 case GET_N_ADAP: 3429 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3430 return (-EFAULT); 3431 3432 /* 3433 * Shucks. MIMD interface returns a positive value for number 3434 * of adapters. TODO: Change it to return 0 when there is no 3435 * applicatio using mimd interface. 3436 */ 3437 return hba_count; 3438 3439 case GET_ADAP_INFO: 3440 3441 /* 3442 * Which adapter 3443 */ 3444 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3445 return (-ENODEV); 3446 3447 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3448 sizeof(struct mcontroller)) ) 3449 return (-EFAULT); 3450 break; 3451 3452#if MEGA_HAVE_STATS 3453 3454 case GET_STATS: 3455 /* 3456 * Which adapter 3457 */ 3458 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3459 return (-ENODEV); 3460 3461 adapter = hba_soft_state[adapno]; 3462 3463 ustats = uioc.uioc_uaddr; 3464 3465 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3466 return (-EFAULT); 3467 3468 /* 3469 * Check for the validity of the logical drive number 3470 */ 3471 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3472 3473 if( copy_to_user(ustats->nreads, adapter->nreads, 3474 num_ldrv*sizeof(u32)) ) 3475 return -EFAULT; 3476 3477 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3478 num_ldrv*sizeof(u32)) ) 3479 return -EFAULT; 3480 3481 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3482 num_ldrv*sizeof(u32)) ) 3483 return -EFAULT; 3484 3485 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3486 num_ldrv*sizeof(u32)) ) 3487 return -EFAULT; 3488 3489 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3490 num_ldrv*sizeof(u32)) ) 3491 return -EFAULT; 3492 3493 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3494 num_ldrv*sizeof(u32)) ) 3495 return -EFAULT; 3496 3497 return 0; 3498 3499#endif 3500 case MBOX_CMD: 3501 3502 /* 3503 * Which adapter 3504 */ 3505 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3506 return (-ENODEV); 3507 3508 adapter = hba_soft_state[adapno]; 3509 3510 /* 3511 * Deletion of logical drive is a special case. The adapter 3512 * should be quiescent before this command is issued. 3513 */ 3514 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3515 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3516 3517 /* 3518 * Do we support this feature 3519 */ 3520 if( !adapter->support_random_del ) { 3521 printk(KERN_WARNING "megaraid: logdrv "); 3522 printk("delete on non-supporting F/W.\n"); 3523 3524 return (-EINVAL); 3525 } 3526 3527 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3528 3529 if( rval == 0 ) { 3530 memset(&mc, 0, sizeof(megacmd_t)); 3531 3532 mc.status = rval; 3533 3534 rval = mega_n_to_m((void __user *)arg, &mc); 3535 } 3536 3537 return rval; 3538 } 3539 /* 3540 * This interface only support the regular passthru commands. 3541 * Reject extended passthru and 64-bit passthru 3542 */ 3543 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3544 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3545 3546 printk(KERN_WARNING "megaraid: rejected passthru.\n"); 3547 3548 return (-EINVAL); 3549 } 3550 3551 /* 3552 * For all internal commands, the buffer must be allocated in 3553 * <4GB address range 3554 */ 3555 if( make_local_pdev(adapter, &pdev) != 0 ) 3556 return -EIO; 3557 3558 /* Is it a passthru command or a DCMD */ 3559 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3560 /* Passthru commands */ 3561 3562 pthru = pci_alloc_consistent(pdev, 3563 sizeof(mega_passthru), 3564 &pthru_dma_hndl); 3565 3566 if( pthru == NULL ) { 3567 free_local_pdev(pdev); 3568 return (-ENOMEM); 3569 } 3570 3571 /* 3572 * The user passthru structure 3573 */ 3574 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr; 3575 3576 /* 3577 * Copy in the user passthru here. 3578 */ 3579 if( copy_from_user(pthru, upthru, 3580 sizeof(mega_passthru)) ) { 3581 3582 pci_free_consistent(pdev, 3583 sizeof(mega_passthru), pthru, 3584 pthru_dma_hndl); 3585 3586 free_local_pdev(pdev); 3587 3588 return (-EFAULT); 3589 } 3590 3591 /* 3592 * Is there a data transfer 3593 */ 3594 if( pthru->dataxferlen ) { 3595 data = pci_alloc_consistent(pdev, 3596 pthru->dataxferlen, 3597 &data_dma_hndl); 3598 3599 if( data == NULL ) { 3600 pci_free_consistent(pdev, 3601 sizeof(mega_passthru), 3602 pthru, 3603 pthru_dma_hndl); 3604 3605 free_local_pdev(pdev); 3606 3607 return (-ENOMEM); 3608 } 3609 3610 /* 3611 * Save the user address and point the kernel 3612 * address at just allocated memory 3613 */ 3614 uxferaddr = pthru->dataxferaddr; 3615 pthru->dataxferaddr = data_dma_hndl; 3616 } 3617 3618 3619 /* 3620 * Is data coming down-stream 3621 */ 3622 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3623 /* 3624 * Get the user data 3625 */ 3626 if( copy_from_user(data, (char __user *)uxferaddr, 3627 pthru->dataxferlen) ) { 3628 rval = (-EFAULT); 3629 goto freemem_and_return; 3630 } 3631 } 3632 3633 memset(&mc, 0, sizeof(megacmd_t)); 3634 3635 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3636 mc.xferaddr = (u32)pthru_dma_hndl; 3637 3638 /* 3639 * Issue the command 3640 */ 3641 mega_internal_command(adapter, &mc, pthru); 3642 3643 rval = mega_n_to_m((void __user *)arg, &mc); 3644 3645 if( rval ) goto freemem_and_return; 3646 3647 3648 /* 3649 * Is data going up-stream 3650 */ 3651 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3652 if( copy_to_user((char __user *)uxferaddr, data, 3653 pthru->dataxferlen) ) { 3654 rval = (-EFAULT); 3655 } 3656 } 3657 3658 /* 3659 * Send the request sense data also, irrespective of 3660 * whether the user has asked for it or not. 3661 */ 3662 if (copy_to_user(upthru->reqsensearea, 3663 pthru->reqsensearea, 14)) 3664 rval = -EFAULT; 3665 3666freemem_and_return: 3667 if( pthru->dataxferlen ) { 3668 pci_free_consistent(pdev, 3669 pthru->dataxferlen, data, 3670 data_dma_hndl); 3671 } 3672 3673 pci_free_consistent(pdev, sizeof(mega_passthru), 3674 pthru, pthru_dma_hndl); 3675 3676 free_local_pdev(pdev); 3677 3678 return rval; 3679 } 3680 else { 3681 /* DCMD commands */ 3682 3683 /* 3684 * Is there a data transfer 3685 */ 3686 if( uioc.xferlen ) { 3687 data = pci_alloc_consistent(pdev, 3688 uioc.xferlen, &data_dma_hndl); 3689 3690 if( data == NULL ) { 3691 free_local_pdev(pdev); 3692 return (-ENOMEM); 3693 } 3694 3695 uxferaddr = MBOX(uioc)->xferaddr; 3696 } 3697 3698 /* 3699 * Is data coming down-stream 3700 */ 3701 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3702 /* 3703 * Get the user data 3704 */ 3705 if( copy_from_user(data, (char __user *)uxferaddr, 3706 uioc.xferlen) ) { 3707 3708 pci_free_consistent(pdev, 3709 uioc.xferlen, 3710 data, data_dma_hndl); 3711 3712 free_local_pdev(pdev); 3713 3714 return (-EFAULT); 3715 } 3716 } 3717 3718 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3719 3720 mc.xferaddr = (u32)data_dma_hndl; 3721 3722 /* 3723 * Issue the command 3724 */ 3725 mega_internal_command(adapter, &mc, NULL); 3726 3727 rval = mega_n_to_m((void __user *)arg, &mc); 3728 3729 if( rval ) { 3730 if( uioc.xferlen ) { 3731 pci_free_consistent(pdev, 3732 uioc.xferlen, data, 3733 data_dma_hndl); 3734 } 3735 3736 free_local_pdev(pdev); 3737 3738 return rval; 3739 } 3740 3741 /* 3742 * Is data going up-stream 3743 */ 3744 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3745 if( copy_to_user((char __user *)uxferaddr, data, 3746 uioc.xferlen) ) { 3747 3748 rval = (-EFAULT); 3749 } 3750 } 3751 3752 if( uioc.xferlen ) { 3753 pci_free_consistent(pdev, 3754 uioc.xferlen, data, 3755 data_dma_hndl); 3756 } 3757 3758 free_local_pdev(pdev); 3759 3760 return rval; 3761 } 3762 3763 default: 3764 return (-EINVAL); 3765 } 3766 3767 return 0; 3768} 3769 3770/** 3771 * mega_m_to_n() 3772 * @arg - user address 3773 * @uioc - new ioctl structure 3774 * 3775 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3776 * structure 3777 * 3778 * Converts the older mimd ioctl structure to newer NIT structure 3779 */ 3780static int 3781mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3782{ 3783 struct uioctl_t uioc_mimd; 3784 char signature[8] = {0}; 3785 u8 opcode; 3786 u8 subopcode; 3787 3788 3789 /* 3790 * check is the application conforms to NIT. We do not have to do much 3791 * in that case. 3792 * We exploit the fact that the signature is stored in the very 3793 * begining of the structure. 3794 */ 3795 3796 if( copy_from_user(signature, arg, 7) ) 3797 return (-EFAULT); 3798 3799 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3800 3801 /* 3802 * NOTE NOTE: The nit ioctl is still under flux because of 3803 * change of mailbox definition, in HPE. No applications yet 3804 * use this interface and let's not have applications use this 3805 * interface till the new specifitions are in place. 3806 */ 3807 return -EINVAL; 3808 } 3809 3810 /* 3811 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3812 * 3813 * Get the user ioctl structure 3814 */ 3815 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3816 return (-EFAULT); 3817 3818 3819 /* 3820 * Get the opcode and subopcode for the commands 3821 */ 3822 opcode = uioc_mimd.ui.fcs.opcode; 3823 subopcode = uioc_mimd.ui.fcs.subopcode; 3824 3825 switch (opcode) { 3826 case 0x82: 3827 3828 switch (subopcode) { 3829 3830 case MEGAIOC_QDRVRVER: /* Query driver version */ 3831 uioc->opcode = GET_DRIVER_VER; 3832 uioc->uioc_uaddr = uioc_mimd.data; 3833 break; 3834 3835 case MEGAIOC_QNADAP: /* Get # of adapters */ 3836 uioc->opcode = GET_N_ADAP; 3837 uioc->uioc_uaddr = uioc_mimd.data; 3838 break; 3839 3840 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3841 uioc->opcode = GET_ADAP_INFO; 3842 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3843 uioc->uioc_uaddr = uioc_mimd.data; 3844 break; 3845 3846 default: 3847 return(-EINVAL); 3848 } 3849 3850 break; 3851 3852 3853 case 0x81: 3854 3855 uioc->opcode = MBOX_CMD; 3856 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3857 3858 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3859 3860 uioc->xferlen = uioc_mimd.ui.fcs.length; 3861 3862 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3863 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3864 3865 break; 3866 3867 case 0x80: 3868 3869 uioc->opcode = MBOX_CMD; 3870 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3871 3872 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3873 3874 /* 3875 * Choose the xferlen bigger of input and output data 3876 */ 3877 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3878 uioc_mimd.outlen : uioc_mimd.inlen; 3879 3880 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3881 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3882 3883 break; 3884 3885 default: 3886 return (-EINVAL); 3887 3888 } 3889 3890 return 0; 3891} 3892 3893/* 3894 * mega_n_to_m() 3895 * @arg - user address 3896 * @mc - mailbox command 3897 * 3898 * Updates the status information to the application, depending on application 3899 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3900 */ 3901static int 3902mega_n_to_m(void __user *arg, megacmd_t *mc) 3903{ 3904 nitioctl_t __user *uiocp; 3905 megacmd_t __user *umc; 3906 mega_passthru __user *upthru; 3907 struct uioctl_t __user *uioc_mimd; 3908 char signature[8] = {0}; 3909 3910 /* 3911 * check is the application conforms to NIT. 3912 */ 3913 if( copy_from_user(signature, arg, 7) ) 3914 return -EFAULT; 3915 3916 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3917 3918 uiocp = arg; 3919 3920 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3921 return (-EFAULT); 3922 3923 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3924 3925 umc = MBOX_P(uiocp); 3926 3927 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3928 return -EFAULT; 3929 3930 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3931 return (-EFAULT); 3932 } 3933 } 3934 else { 3935 uioc_mimd = arg; 3936 3937 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3938 return (-EFAULT); 3939 3940 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3941 3942 umc = (megacmd_t __user *)uioc_mimd->mbox; 3943 3944 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3945 return (-EFAULT); 3946 3947 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3948 return (-EFAULT); 3949 } 3950 } 3951 3952 return 0; 3953} 3954 3955 3956/* 3957 * MEGARAID 'FW' commands. 3958 */ 3959 3960/** 3961 * mega_is_bios_enabled() 3962 * @adapter - pointer to our soft state 3963 * 3964 * issue command to find out if the BIOS is enabled for this controller 3965 */ 3966static int 3967mega_is_bios_enabled(adapter_t *adapter) 3968{ 3969 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3970 mbox_t *mbox; 3971 int ret; 3972 3973 mbox = (mbox_t *)raw_mbox; 3974 3975 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3976 3977 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3978 3979 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3980 3981 raw_mbox[0] = IS_BIOS_ENABLED; 3982 raw_mbox[2] = GET_BIOS; 3983 3984 3985 ret = issue_scb_block(adapter, raw_mbox); 3986 3987 return *(char *)adapter->mega_buffer; 3988} 3989 3990 3991/** 3992 * mega_enum_raid_scsi() 3993 * @adapter - pointer to our soft state 3994 * 3995 * Find out what channels are RAID/SCSI. This information is used to 3996 * differentiate the virtual channels and physical channels and to support 3997 * ROMB feature and non-disk devices. 3998 */ 3999static void 4000mega_enum_raid_scsi(adapter_t *adapter) 4001{ 4002 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4003 mbox_t *mbox; 4004 int i; 4005 4006 mbox = (mbox_t *)raw_mbox; 4007 4008 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4009 4010 /* 4011 * issue command to find out what channels are raid/scsi 4012 */ 4013 raw_mbox[0] = CHNL_CLASS; 4014 raw_mbox[2] = GET_CHNL_CLASS; 4015 4016 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4017 4018 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4019 4020 /* 4021 * Non-ROMB firmware fail this command, so all channels 4022 * must be shown RAID 4023 */ 4024 adapter->mega_ch_class = 0xFF; 4025 4026 if(!issue_scb_block(adapter, raw_mbox)) { 4027 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 4028 4029 } 4030 4031 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 4032 if( (adapter->mega_ch_class >> i) & 0x01 ) { 4033 printk(KERN_INFO "megaraid: channel[%d] is raid.\n", 4034 i); 4035 } 4036 else { 4037 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n", 4038 i); 4039 } 4040 } 4041 4042 return; 4043} 4044 4045 4046/** 4047 * mega_get_boot_drv() 4048 * @adapter - pointer to our soft state 4049 * 4050 * Find out which device is the boot device. Note, any logical drive or any 4051 * phyical device (e.g., a CDROM) can be designated as a boot device. 4052 */ 4053static void 4054mega_get_boot_drv(adapter_t *adapter) 4055{ 4056 struct private_bios_data *prv_bios_data; 4057 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4058 mbox_t *mbox; 4059 u16 cksum = 0; 4060 u8 *cksum_p; 4061 u8 boot_pdrv; 4062 int i; 4063 4064 mbox = (mbox_t *)raw_mbox; 4065 4066 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4067 4068 raw_mbox[0] = BIOS_PVT_DATA; 4069 raw_mbox[2] = GET_BIOS_PVT_DATA; 4070 4071 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4072 4073 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4074 4075 adapter->boot_ldrv_enabled = 0; 4076 adapter->boot_ldrv = 0; 4077 4078 adapter->boot_pdrv_enabled = 0; 4079 adapter->boot_pdrv_ch = 0; 4080 adapter->boot_pdrv_tgt = 0; 4081 4082 if(issue_scb_block(adapter, raw_mbox) == 0) { 4083 prv_bios_data = 4084 (struct private_bios_data *)adapter->mega_buffer; 4085 4086 cksum = 0; 4087 cksum_p = (char *)prv_bios_data; 4088 for (i = 0; i < 14; i++ ) { 4089 cksum += (u16)(*cksum_p++); 4090 } 4091 4092 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 4093 4094 /* 4095 * If MSB is set, a physical drive is set as boot 4096 * device 4097 */ 4098 if( prv_bios_data->boot_drv & 0x80 ) { 4099 adapter->boot_pdrv_enabled = 1; 4100 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 4101 adapter->boot_pdrv_ch = boot_pdrv / 16; 4102 adapter->boot_pdrv_tgt = boot_pdrv % 16; 4103 } 4104 else { 4105 adapter->boot_ldrv_enabled = 1; 4106 adapter->boot_ldrv = prv_bios_data->boot_drv; 4107 } 4108 } 4109 } 4110 4111} 4112 4113/** 4114 * mega_support_random_del() 4115 * @adapter - pointer to our soft state 4116 * 4117 * Find out if this controller supports random deletion and addition of 4118 * logical drives 4119 */ 4120static int 4121mega_support_random_del(adapter_t *adapter) 4122{ 4123 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4124 mbox_t *mbox; 4125 int rval; 4126 4127 mbox = (mbox_t *)raw_mbox; 4128 4129 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4130 4131 /* 4132 * issue command 4133 */ 4134 raw_mbox[0] = FC_DEL_LOGDRV; 4135 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 4136 4137 rval = issue_scb_block(adapter, raw_mbox); 4138 4139 return !rval; 4140} 4141 4142 4143/** 4144 * mega_support_ext_cdb() 4145 * @adapter - pointer to our soft state 4146 * 4147 * Find out if this firmware support cdblen > 10 4148 */ 4149static int 4150mega_support_ext_cdb(adapter_t *adapter) 4151{ 4152 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4153 mbox_t *mbox; 4154 int rval; 4155 4156 mbox = (mbox_t *)raw_mbox; 4157 4158 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4159 /* 4160 * issue command to find out if controller supports extended CDBs. 4161 */ 4162 raw_mbox[0] = 0xA4; 4163 raw_mbox[2] = 0x16; 4164 4165 rval = issue_scb_block(adapter, raw_mbox); 4166 4167 return !rval; 4168} 4169 4170 4171/** 4172 * mega_del_logdrv() 4173 * @adapter - pointer to our soft state 4174 * @logdrv - logical drive to be deleted 4175 * 4176 * Delete the specified logical drive. It is the responsibility of the user 4177 * app to let the OS know about this operation. 4178 */ 4179static int 4180mega_del_logdrv(adapter_t *adapter, int logdrv) 4181{ 4182 unsigned long flags; 4183 scb_t *scb; 4184 int rval; 4185 4186 /* 4187 * Stop sending commands to the controller, queue them internally. 4188 * When deletion is complete, ISR will flush the queue. 4189 */ 4190 atomic_set(&adapter->quiescent, 1); 4191 4192 /* 4193 * Wait till all the issued commands are complete and there are no 4194 * commands in the pending queue 4195 */ 4196 while (atomic_read(&adapter->pend_cmds) > 0 || 4197 !list_empty(&adapter->pending_list)) 4198 msleep(1000); /* sleep for 1s */ 4199 4200 rval = mega_do_del_logdrv(adapter, logdrv); 4201 4202 spin_lock_irqsave(&adapter->lock, flags); 4203 4204 /* 4205 * If delete operation was successful, add 0x80 to the logical drive 4206 * ids for commands in the pending queue. 4207 */ 4208 if (adapter->read_ldidmap) { 4209 struct list_head *pos; 4210 list_for_each(pos, &adapter->pending_list) { 4211 scb = list_entry(pos, scb_t, list); 4212 if (scb->pthru->logdrv < 0x80 ) 4213 scb->pthru->logdrv += 0x80; 4214 } 4215 } 4216 4217 atomic_set(&adapter->quiescent, 0); 4218 4219 mega_runpendq(adapter); 4220 4221 spin_unlock_irqrestore(&adapter->lock, flags); 4222 4223 return rval; 4224} 4225 4226 4227static int 4228mega_do_del_logdrv(adapter_t *adapter, int logdrv) 4229{ 4230 megacmd_t mc; 4231 int rval; 4232 4233 memset( &mc, 0, sizeof(megacmd_t)); 4234 4235 mc.cmd = FC_DEL_LOGDRV; 4236 mc.opcode = OP_DEL_LOGDRV; 4237 mc.subopcode = logdrv; 4238 4239 rval = mega_internal_command(adapter, &mc, NULL); 4240 4241 /* log this event */ 4242 if(rval) { 4243 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv); 4244 return rval; 4245 } 4246 4247 /* 4248 * After deleting first logical drive, the logical drives must be 4249 * addressed by adding 0x80 to the logical drive id. 4250 */ 4251 adapter->read_ldidmap = 1; 4252 4253 return rval; 4254} 4255 4256 4257/** 4258 * mega_get_max_sgl() 4259 * @adapter - pointer to our soft state 4260 * 4261 * Find out the maximum number of scatter-gather elements supported by this 4262 * version of the firmware 4263 */ 4264static void 4265mega_get_max_sgl(adapter_t *adapter) 4266{ 4267 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4268 mbox_t *mbox; 4269 4270 mbox = (mbox_t *)raw_mbox; 4271 4272 memset(mbox, 0, sizeof(raw_mbox)); 4273 4274 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4275 4276 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4277 4278 raw_mbox[0] = MAIN_MISC_OPCODE; 4279 raw_mbox[2] = GET_MAX_SG_SUPPORT; 4280 4281 4282 if( issue_scb_block(adapter, raw_mbox) ) { 4283 /* 4284 * f/w does not support this command. Choose the default value 4285 */ 4286 adapter->sglen = MIN_SGLIST; 4287 } 4288 else { 4289 adapter->sglen = *((char *)adapter->mega_buffer); 4290 4291 /* 4292 * Make sure this is not more than the resources we are 4293 * planning to allocate 4294 */ 4295 if ( adapter->sglen > MAX_SGLIST ) 4296 adapter->sglen = MAX_SGLIST; 4297 } 4298 4299 return; 4300} 4301 4302 4303/** 4304 * mega_support_cluster() 4305 * @adapter - pointer to our soft state 4306 * 4307 * Find out if this firmware support cluster calls. 4308 */ 4309static int 4310mega_support_cluster(adapter_t *adapter) 4311{ 4312 unsigned char raw_mbox[sizeof(struct mbox_out)]; 4313 mbox_t *mbox; 4314 4315 mbox = (mbox_t *)raw_mbox; 4316 4317 memset(mbox, 0, sizeof(raw_mbox)); 4318 4319 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 4320 4321 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 4322 4323 /* 4324 * Try to get the initiator id. This command will succeed iff the 4325 * clustering is available on this HBA. 4326 */ 4327 raw_mbox[0] = MEGA_GET_TARGET_ID; 4328 4329 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 4330 4331 /* 4332 * Cluster support available. Get the initiator target id. 4333 * Tell our id to mid-layer too. 4334 */ 4335 adapter->this_id = *(u32 *)adapter->mega_buffer; 4336 adapter->host->this_id = adapter->this_id; 4337 4338 return 1; 4339 } 4340 4341 return 0; 4342} 4343 4344#ifdef CONFIG_PROC_FS 4345/** 4346 * mega_adapinq() 4347 * @adapter - pointer to our soft state 4348 * @dma_handle - DMA address of the buffer 4349 * 4350 * Issue internal comamnds while interrupts are available. 4351 * We only issue direct mailbox commands from within the driver. ioctl() 4352 * interface using these routines can issue passthru commands. 4353 */ 4354static int 4355mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 4356{ 4357 megacmd_t mc; 4358 4359 memset(&mc, 0, sizeof(megacmd_t)); 4360 4361 if( adapter->flag & BOARD_40LD ) { 4362 mc.cmd = FC_NEW_CONFIG; 4363 mc.opcode = NC_SUBOP_ENQUIRY3; 4364 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 4365 } 4366 else { 4367 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 4368 } 4369 4370 mc.xferaddr = (u32)dma_handle; 4371 4372 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 4373 return -1; 4374 } 4375 4376 return 0; 4377} 4378 4379 4380/** mega_internal_dev_inquiry() 4381 * @adapter - pointer to our soft state 4382 * @ch - channel for this device 4383 * @tgt - ID of this device 4384 * @buf_dma_handle - DMA address of the buffer 4385 * 4386 * Issue the scsi inquiry for the specified device. 4387 */ 4388static int 4389mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4390 dma_addr_t buf_dma_handle) 4391{ 4392 mega_passthru *pthru; 4393 dma_addr_t pthru_dma_handle; 4394 megacmd_t mc; 4395 int rval; 4396 struct pci_dev *pdev; 4397 4398 4399 /* 4400 * For all internal commands, the buffer must be allocated in <4GB 4401 * address range 4402 */ 4403 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4404 4405 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru), 4406 &pthru_dma_handle); 4407 4408 if( pthru == NULL ) { 4409 free_local_pdev(pdev); 4410 return -1; 4411 } 4412 4413 pthru->timeout = 2; 4414 pthru->ars = 1; 4415 pthru->reqsenselen = 14; 4416 pthru->islogical = 0; 4417 4418 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4419 4420 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4421 4422 pthru->cdblen = 6; 4423 4424 pthru->cdb[0] = INQUIRY; 4425 pthru->cdb[1] = 0; 4426 pthru->cdb[2] = 0; 4427 pthru->cdb[3] = 0; 4428 pthru->cdb[4] = 255; 4429 pthru->cdb[5] = 0; 4430 4431 4432 pthru->dataxferaddr = (u32)buf_dma_handle; 4433 pthru->dataxferlen = 256; 4434 4435 memset(&mc, 0, sizeof(megacmd_t)); 4436 4437 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4438 mc.xferaddr = (u32)pthru_dma_handle; 4439 4440 rval = mega_internal_command(adapter, &mc, pthru); 4441 4442 pci_free_consistent(pdev, sizeof(mega_passthru), pthru, 4443 pthru_dma_handle); 4444 4445 free_local_pdev(pdev); 4446 4447 return rval; 4448} 4449#endif 4450 4451/** 4452 * mega_internal_command() 4453 * @adapter - pointer to our soft state 4454 * @mc - the mailbox command 4455 * @pthru - Passthru structure for DCDB commands 4456 * 4457 * Issue the internal commands in interrupt mode. 4458 * The last argument is the address of the passthru structure if the command 4459 * to be fired is a passthru command 4460 * 4461 * lockscope specifies whether the caller has already acquired the lock. Of 4462 * course, the caller must know which lock we are talking about. 4463 * 4464 * Note: parameter 'pthru' is null for non-passthru commands. 4465 */ 4466static int 4467mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4468{ 4469 Scsi_Cmnd *scmd; 4470 struct scsi_device *sdev; 4471 scb_t *scb; 4472 int rval; 4473 4474 /* 4475 * The internal commands share one command id and hence are 4476 * serialized. This is so because we want to reserve maximum number of 4477 * available command ids for the I/O commands. 4478 */ 4479 mutex_lock(&adapter->int_mtx); 4480 4481 scb = &adapter->int_scb; 4482 memset(scb, 0, sizeof(scb_t)); 4483 4484 scmd = &adapter->int_scmd; 4485 memset(scmd, 0, sizeof(Scsi_Cmnd)); 4486 4487 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL); 4488 memset(sdev, 0, sizeof(struct scsi_device)); 4489 scmd->device = sdev; 4490 4491 scmd->device->host = adapter->host; 4492 scmd->request_buffer = (void *)scb; 4493 scmd->cmnd[0] = MEGA_INTERNAL_CMD; 4494 4495 scb->state |= SCB_ACTIVE; 4496 scb->cmd = scmd; 4497 4498 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4499 4500 /* 4501 * Is it a passthru command 4502 */ 4503 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 4504 4505 scb->pthru = pthru; 4506 } 4507 4508 scb->idx = CMDID_INT_CMDS; 4509 4510 megaraid_queue(scmd, mega_internal_done); 4511 4512 wait_for_completion(&adapter->int_waitq); 4513 4514 rval = scmd->result; 4515 mc->status = scmd->result; 4516 kfree(sdev); 4517 4518 /* 4519 * Print a debug message for all failed commands. Applications can use 4520 * this information. 4521 */ 4522 if( scmd->result && trace_level ) { 4523 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", 4524 mc->cmd, mc->opcode, mc->subopcode, scmd->result); 4525 } 4526 4527 mutex_unlock(&adapter->int_mtx); 4528 4529 return rval; 4530} 4531 4532 4533/** 4534 * mega_internal_done() 4535 * @scmd - internal scsi command 4536 * 4537 * Callback routine for internal commands. 4538 */ 4539static void 4540mega_internal_done(Scsi_Cmnd *scmd) 4541{ 4542 adapter_t *adapter; 4543 4544 adapter = (adapter_t *)scmd->device->host->hostdata; 4545 4546 complete(&adapter->int_waitq); 4547 4548} 4549 4550 4551static struct scsi_host_template megaraid_template = { 4552 .module = THIS_MODULE, 4553 .name = "MegaRAID", 4554 .proc_name = "megaraid_legacy", 4555 .info = megaraid_info, 4556 .queuecommand = megaraid_queue, 4557 .bios_param = megaraid_biosparam, 4558 .max_sectors = MAX_SECTORS_PER_IO, 4559 .can_queue = MAX_COMMANDS, 4560 .this_id = DEFAULT_INITIATOR_ID, 4561 .sg_tablesize = MAX_SGLIST, 4562 .cmd_per_lun = DEF_CMD_PER_LUN, 4563 .use_clustering = ENABLE_CLUSTERING, 4564 .eh_abort_handler = megaraid_abort, 4565 .eh_device_reset_handler = megaraid_reset, 4566 .eh_bus_reset_handler = megaraid_reset, 4567 .eh_host_reset_handler = megaraid_reset, 4568}; 4569 4570static int __devinit 4571megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4572{ 4573 struct Scsi_Host *host; 4574 adapter_t *adapter; 4575 unsigned long mega_baseport, tbase, flag = 0; 4576 u16 subsysid, subsysvid; 4577 u8 pci_bus, pci_dev_func; 4578 int irq, i, j; 4579 int error = -ENODEV; 4580 4581 if (pci_enable_device(pdev)) 4582 goto out; 4583 pci_set_master(pdev); 4584 4585 pci_bus = pdev->bus->number; 4586 pci_dev_func = pdev->devfn; 4587 4588 /* 4589 * The megaraid3 stuff reports the ID of the Intel part which is not 4590 * remotely specific to the megaraid 4591 */ 4592 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4593 u16 magic; 4594 /* 4595 * Don't fall over the Compaq management cards using the same 4596 * PCI identifier 4597 */ 4598 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4599 pdev->subsystem_device == 0xC000) 4600 return -ENODEV; 4601 /* Now check the magic signature byte */ 4602 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4603 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4604 return -ENODEV; 4605 /* Ok it is probably a megaraid */ 4606 } 4607 4608 /* 4609 * For these vendor and device ids, signature offsets are not 4610 * valid and 64 bit is implicit 4611 */ 4612 if (id->driver_data & BOARD_64BIT) 4613 flag |= BOARD_64BIT; 4614 else { 4615 u32 magic64; 4616 4617 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4618 if (magic64 == HBA_SIGNATURE_64BIT) 4619 flag |= BOARD_64BIT; 4620 } 4621 4622 subsysvid = pdev->subsystem_vendor; 4623 subsysid = pdev->subsystem_device; 4624 4625 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:", 4626 id->vendor, id->device, pci_bus); 4627 4628 printk("slot %d:func %d\n", 4629 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func)); 4630 4631 /* Read the base port and IRQ from PCI */ 4632 mega_baseport = pci_resource_start(pdev, 0); 4633 irq = pdev->irq; 4634 4635 tbase = mega_baseport; 4636 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4637 flag |= BOARD_MEMMAP; 4638 4639 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4640 printk(KERN_WARNING "megaraid: mem region busy!\n"); 4641 goto out_disable_device; 4642 } 4643 4644 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4645 if (!mega_baseport) { 4646 printk(KERN_WARNING 4647 "megaraid: could not map hba memory\n"); 4648 goto out_release_region; 4649 } 4650 } else { 4651 flag |= BOARD_IOMAP; 4652 mega_baseport += 0x10; 4653 4654 if (!request_region(mega_baseport, 16, "megaraid")) 4655 goto out_disable_device; 4656 } 4657 4658 /* Initialize SCSI Host structure */ 4659 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4660 if (!host) 4661 goto out_iounmap; 4662 4663 adapter = (adapter_t *)host->hostdata; 4664 memset(adapter, 0, sizeof(adapter_t)); 4665 4666 printk(KERN_NOTICE 4667 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4668 host->host_no, mega_baseport, irq); 4669 4670 adapter->base = mega_baseport; 4671 if (flag & BOARD_MEMMAP) 4672 adapter->mmio_base = (void __iomem *) mega_baseport; 4673 4674 INIT_LIST_HEAD(&adapter->free_list); 4675 INIT_LIST_HEAD(&adapter->pending_list); 4676 INIT_LIST_HEAD(&adapter->completed_list); 4677 4678 adapter->flag = flag; 4679 spin_lock_init(&adapter->lock); 4680 4681 host->cmd_per_lun = max_cmd_per_lun; 4682 host->max_sectors = max_sectors_per_io; 4683 4684 adapter->dev = pdev; 4685 adapter->host = host; 4686 4687 adapter->host->irq = irq; 4688 4689 if (flag & BOARD_MEMMAP) 4690 adapter->host->base = tbase; 4691 else { 4692 adapter->host->io_port = tbase; 4693 adapter->host->n_io_port = 16; 4694 } 4695 4696 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4697 4698 /* 4699 * Allocate buffer to issue internal commands. 4700 */ 4701 adapter->mega_buffer = pci_alloc_consistent(adapter->dev, 4702 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle); 4703 if (!adapter->mega_buffer) { 4704 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4705 goto out_host_put; 4706 } 4707 4708 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL); 4709 if (!adapter->scb_list) { 4710 printk(KERN_WARNING "megaraid: out of RAM.\n"); 4711 goto out_free_cmd_buffer; 4712 } 4713 4714 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4715 megaraid_isr_memmapped : megaraid_isr_iomapped, 4716 IRQF_SHARED, "megaraid", adapter)) { 4717 printk(KERN_WARNING 4718 "megaraid: Couldn't register IRQ %d!\n", irq); 4719 goto out_free_scb_list; 4720 } 4721 4722 if (mega_setup_mailbox(adapter)) 4723 goto out_free_irq; 4724 4725 if (mega_query_adapter(adapter)) 4726 goto out_free_mbox; 4727 4728 /* 4729 * Have checks for some buggy f/w 4730 */ 4731 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4732 /* 4733 * Which firmware 4734 */ 4735 if (!strcmp(adapter->fw_version, "3.00") || 4736 !strcmp(adapter->fw_version, "3.01")) { 4737 4738 printk( KERN_WARNING 4739 "megaraid: Your card is a Dell PERC " 4740 "2/SC RAID controller with " 4741 "firmware\nmegaraid: 3.00 or 3.01. " 4742 "This driver is known to have " 4743 "corruption issues\nmegaraid: with " 4744 "those firmware versions on this " 4745 "specific card. In order\nmegaraid: " 4746 "to protect your data, please upgrade " 4747 "your firmware to version\nmegaraid: " 4748 "3.10 or later, available from the " 4749 "Dell Technical Support web\n" 4750 "megaraid: site at\nhttp://support." 4751 "dell.com/us/en/filelib/download/" 4752 "index.asp?fileid=2940\n" 4753 ); 4754 } 4755 } 4756 4757 /* 4758 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4759 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4760 * support, since this firmware cannot handle 64 bit 4761 * addressing 4762 */ 4763 if ((subsysvid == HP_SUBSYS_VID) && 4764 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4765 /* 4766 * which firmware 4767 */ 4768 if (!strcmp(adapter->fw_version, "H01.07") || 4769 !strcmp(adapter->fw_version, "H01.08") || 4770 !strcmp(adapter->fw_version, "H01.09") ) { 4771 printk(KERN_WARNING 4772 "megaraid: Firmware H.01.07, " 4773 "H.01.08, and H.01.09 on 1M/2M " 4774 "controllers\n" 4775 "megaraid: do not support 64 bit " 4776 "addressing.\nmegaraid: DISABLING " 4777 "64 bit support.\n"); 4778 adapter->flag &= ~BOARD_64BIT; 4779 } 4780 } 4781 4782 if (mega_is_bios_enabled(adapter)) 4783 mega_hbas[hba_count].is_bios_enabled = 1; 4784 mega_hbas[hba_count].hostdata_addr = adapter; 4785 4786 /* 4787 * Find out which channel is raid and which is scsi. This is 4788 * for ROMB support. 4789 */ 4790 mega_enum_raid_scsi(adapter); 4791 4792 /* 4793 * Find out if a logical drive is set as the boot drive. If 4794 * there is one, will make that as the first logical drive. 4795 * ROMB: Do we have to boot from a physical drive. Then all 4796 * the physical drives would appear before the logical disks. 4797 * Else, all the physical drives would be exported to the mid 4798 * layer after logical drives. 4799 */ 4800 mega_get_boot_drv(adapter); 4801 4802 if (adapter->boot_pdrv_enabled) { 4803 j = adapter->product_info.nchannels; 4804 for( i = 0; i < j; i++ ) 4805 adapter->logdrv_chan[i] = 0; 4806 for( i = j; i < NVIRT_CHAN + j; i++ ) 4807 adapter->logdrv_chan[i] = 1; 4808 } else { 4809 for (i = 0; i < NVIRT_CHAN; i++) 4810 adapter->logdrv_chan[i] = 1; 4811 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4812 adapter->logdrv_chan[i] = 0; 4813 adapter->mega_ch_class <<= NVIRT_CHAN; 4814 } 4815 4816 /* 4817 * Do we support random deletion and addition of logical 4818 * drives 4819 */ 4820 adapter->read_ldidmap = 0; /* set it after first logdrv 4821 delete cmd */ 4822 adapter->support_random_del = mega_support_random_del(adapter); 4823 4824 /* Initialize SCBs */ 4825 if (mega_init_scb(adapter)) 4826 goto out_free_mbox; 4827 4828 /* 4829 * Reset the pending commands counter 4830 */ 4831 atomic_set(&adapter->pend_cmds, 0); 4832 4833 /* 4834 * Reset the adapter quiescent flag 4835 */ 4836 atomic_set(&adapter->quiescent, 0); 4837 4838 hba_soft_state[hba_count] = adapter; 4839 4840 /* 4841 * Fill in the structure which needs to be passed back to the 4842 * application when it does an ioctl() for controller related 4843 * information. 4844 */ 4845 i = hba_count; 4846 4847 mcontroller[i].base = mega_baseport; 4848 mcontroller[i].irq = irq; 4849 mcontroller[i].numldrv = adapter->numldrv; 4850 mcontroller[i].pcibus = pci_bus; 4851 mcontroller[i].pcidev = id->device; 4852 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4853 mcontroller[i].pciid = -1; 4854 mcontroller[i].pcivendor = id->vendor; 4855 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4856 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4857 4858 4859 /* Set the Mode of addressing to 64 bit if we can */ 4860 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4861 pci_set_dma_mask(pdev, DMA_64BIT_MASK); 4862 adapter->has_64bit_addr = 1; 4863 } else { 4864 pci_set_dma_mask(pdev, DMA_32BIT_MASK); 4865 adapter->has_64bit_addr = 0; 4866 } 4867 4868 mutex_init(&adapter->int_mtx); 4869 init_completion(&adapter->int_waitq); 4870 4871 adapter->this_id = DEFAULT_INITIATOR_ID; 4872 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4873 4874#if MEGA_HAVE_CLUSTERING 4875 /* 4876 * Is cluster support enabled on this controller 4877 * Note: In a cluster the HBAs ( the initiators ) will have 4878 * different target IDs and we cannot assume it to be 7. Call 4879 * to mega_support_cluster() will get the target ids also if 4880 * the cluster support is available 4881 */ 4882 adapter->has_cluster = mega_support_cluster(adapter); 4883 if (adapter->has_cluster) { 4884 printk(KERN_NOTICE 4885 "megaraid: Cluster driver, initiator id:%d\n", 4886 adapter->this_id); 4887 } 4888#endif 4889 4890 pci_set_drvdata(pdev, host); 4891 4892 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4893 4894 error = scsi_add_host(host, &pdev->dev); 4895 if (error) 4896 goto out_free_mbox; 4897 4898 scsi_scan_host(host); 4899 hba_count++; 4900 return 0; 4901 4902 out_free_mbox: 4903 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 4904 adapter->una_mbox64, adapter->una_mbox64_dma); 4905 out_free_irq: 4906 free_irq(adapter->host->irq, adapter); 4907 out_free_scb_list: 4908 kfree(adapter->scb_list); 4909 out_free_cmd_buffer: 4910 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 4911 adapter->mega_buffer, adapter->buf_dma_handle); 4912 out_host_put: 4913 scsi_host_put(host); 4914 out_iounmap: 4915 if (flag & BOARD_MEMMAP) 4916 iounmap((void *)mega_baseport); 4917 out_release_region: 4918 if (flag & BOARD_MEMMAP) 4919 release_mem_region(tbase, 128); 4920 else 4921 release_region(mega_baseport, 16); 4922 out_disable_device: 4923 pci_disable_device(pdev); 4924 out: 4925 return error; 4926} 4927 4928static void 4929__megaraid_shutdown(adapter_t *adapter) 4930{ 4931 u_char raw_mbox[sizeof(struct mbox_out)]; 4932 mbox_t *mbox = (mbox_t *)raw_mbox; 4933 int i; 4934 4935 /* Flush adapter cache */ 4936 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4937 raw_mbox[0] = FLUSH_ADAPTER; 4938 4939 free_irq(adapter->host->irq, adapter); 4940 4941 /* Issue a blocking (interrupts disabled) command to the card */ 4942 issue_scb_block(adapter, raw_mbox); 4943 4944 /* Flush disks cache */ 4945 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4946 raw_mbox[0] = FLUSH_SYSTEM; 4947 4948 /* Issue a blocking (interrupts disabled) command to the card */ 4949 issue_scb_block(adapter, raw_mbox); 4950 4951 if (atomic_read(&adapter->pend_cmds) > 0) 4952 printk(KERN_WARNING "megaraid: pending commands!!\n"); 4953 4954 /* 4955 * Have a delibrate delay to make sure all the caches are 4956 * actually flushed. 4957 */ 4958 for (i = 0; i <= 10; i++) 4959 mdelay(1000); 4960} 4961 4962static void 4963megaraid_remove_one(struct pci_dev *pdev) 4964{ 4965 struct Scsi_Host *host = pci_get_drvdata(pdev); 4966 adapter_t *adapter = (adapter_t *)host->hostdata; 4967 4968 scsi_remove_host(host); 4969 4970 __megaraid_shutdown(adapter); 4971 4972 /* Free our resources */ 4973 if (adapter->flag & BOARD_MEMMAP) { 4974 iounmap((void *)adapter->base); 4975 release_mem_region(adapter->host->base, 128); 4976 } else 4977 release_region(adapter->base, 16); 4978 4979 mega_free_sgl(adapter); 4980 4981#ifdef CONFIG_PROC_FS 4982 if (adapter->controller_proc_dir_entry) { 4983 remove_proc_entry("stat", adapter->controller_proc_dir_entry); 4984 remove_proc_entry("config", 4985 adapter->controller_proc_dir_entry); 4986 remove_proc_entry("mailbox", 4987 adapter->controller_proc_dir_entry); 4988#if MEGA_HAVE_ENH_PROC 4989 remove_proc_entry("rebuild-rate", 4990 adapter->controller_proc_dir_entry); 4991 remove_proc_entry("battery-status", 4992 adapter->controller_proc_dir_entry); 4993 4994 remove_proc_entry("diskdrives-ch0", 4995 adapter->controller_proc_dir_entry); 4996 remove_proc_entry("diskdrives-ch1", 4997 adapter->controller_proc_dir_entry); 4998 remove_proc_entry("diskdrives-ch2", 4999 adapter->controller_proc_dir_entry); 5000 remove_proc_entry("diskdrives-ch3", 5001 adapter->controller_proc_dir_entry); 5002 5003 remove_proc_entry("raiddrives-0-9", 5004 adapter->controller_proc_dir_entry); 5005 remove_proc_entry("raiddrives-10-19", 5006 adapter->controller_proc_dir_entry); 5007 remove_proc_entry("raiddrives-20-29", 5008 adapter->controller_proc_dir_entry); 5009 remove_proc_entry("raiddrives-30-39", 5010 adapter->controller_proc_dir_entry); 5011#endif 5012 { 5013 char buf[12] = { 0 }; 5014 sprintf(buf, "hba%d", adapter->host->host_no); 5015 remove_proc_entry(buf, mega_proc_dir_entry); 5016 } 5017 } 5018#endif 5019 5020 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE, 5021 adapter->mega_buffer, adapter->buf_dma_handle); 5022 kfree(adapter->scb_list); 5023 pci_free_consistent(adapter->dev, sizeof(mbox64_t), 5024 adapter->una_mbox64, adapter->una_mbox64_dma); 5025 5026 scsi_host_put(host); 5027 pci_disable_device(pdev); 5028 5029 hba_count--; 5030} 5031 5032static void 5033megaraid_shutdown(struct pci_dev *pdev) 5034{ 5035 struct Scsi_Host *host = pci_get_drvdata(pdev); 5036 adapter_t *adapter = (adapter_t *)host->hostdata; 5037 5038 __megaraid_shutdown(adapter); 5039} 5040 5041static struct pci_device_id megaraid_pci_tbl[] = { 5042 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 5043 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5044 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 5045 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5046 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 5047 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 5048 {0,} 5049}; 5050MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 5051 5052static struct pci_driver megaraid_pci_driver = { 5053 .name = "megaraid_legacy", 5054 .id_table = megaraid_pci_tbl, 5055 .probe = megaraid_probe_one, 5056 .remove = __devexit_p(megaraid_remove_one), 5057 .shutdown = megaraid_shutdown, 5058}; 5059 5060static int __init megaraid_init(void) 5061{ 5062 int error; 5063 5064 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 5065 max_cmd_per_lun = MAX_CMD_PER_LUN; 5066 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 5067 max_mbox_busy_wait = MBOX_BUSY_WAIT; 5068 5069#ifdef CONFIG_PROC_FS 5070 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root); 5071 if (!mega_proc_dir_entry) { 5072 printk(KERN_WARNING 5073 "megaraid: failed to create megaraid root\n"); 5074 } 5075#endif 5076 error = pci_register_driver(&megaraid_pci_driver); 5077 if (error) { 5078#ifdef CONFIG_PROC_FS 5079 remove_proc_entry("megaraid", &proc_root); 5080#endif 5081 return error; 5082 } 5083 5084 /* 5085 * Register the driver as a character device, for applications 5086 * to access it for ioctls. 5087 * First argument (major) to register_chrdev implies a dynamic 5088 * major number allocation. 5089 */ 5090 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 5091 if (!major) { 5092 printk(KERN_WARNING 5093 "megaraid: failed to register char device\n"); 5094 } 5095 5096 return 0; 5097} 5098 5099static void __exit megaraid_exit(void) 5100{ 5101 /* 5102 * Unregister the character device interface to the driver. 5103 */ 5104 unregister_chrdev(major, "megadev_legacy"); 5105 5106 pci_unregister_driver(&megaraid_pci_driver); 5107 5108#ifdef CONFIG_PROC_FS 5109 remove_proc_entry("megaraid", &proc_root); 5110#endif 5111} 5112 5113module_init(megaraid_init); 5114module_exit(megaraid_exit); 5115 5116/* vi: set ts=8 sw=8 tw=78: */ 5117