1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * 4 * Linux MegaRAID device driver 5 * 6 * Copyright (c) 2002 LSI Logic Corporation. 7 * 8 * Copyright (c) 2002 Red Hat, Inc. All rights reserved. 9 * - fixes 10 * - speed-ups (list handling fixes, issued_list, optimizations.) 11 * - lots of cleanups. 12 * 13 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de> 14 * - new-style, hotplug-aware pci probing and scsi registration 15 * 16 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju 17 * <Seokmann.Ju@lsil.com> 18 * 19 * Description: Linux device driver for LSI Logic MegaRAID controller 20 * 21 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 22 * 518, 520, 531, 532 23 * 24 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell, 25 * and others. Please send updates to the mailing list 26 * linux-scsi@vger.kernel.org . 27 */ 28 29#include <linux/mm.h> 30#include <linux/fs.h> 31#include <linux/blkdev.h> 32#include <linux/uaccess.h> 33#include <asm/io.h> 34#include <linux/completion.h> 35#include <linux/delay.h> 36#include <linux/proc_fs.h> 37#include <linux/seq_file.h> 38#include <linux/reboot.h> 39#include <linux/module.h> 40#include <linux/list.h> 41#include <linux/interrupt.h> 42#include <linux/pci.h> 43#include <linux/init.h> 44#include <linux/dma-mapping.h> 45#include <linux/mutex.h> 46#include <linux/slab.h> 47#include <scsi/scsicam.h> 48 49#include "scsi.h" 50#include <scsi/scsi_host.h> 51 52#include "megaraid.h" 53 54#define MEGARAID_MODULE_VERSION "2.00.4" 55 56MODULE_AUTHOR ("sju@lsil.com"); 57MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver"); 58MODULE_LICENSE ("GPL"); 59MODULE_VERSION(MEGARAID_MODULE_VERSION); 60 61static DEFINE_MUTEX(megadev_mutex); 62static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; 63module_param(max_cmd_per_lun, uint, 0); 64MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)"); 65 66static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO; 67module_param(max_sectors_per_io, ushort, 0); 68MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)"); 69 70 71static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; 72module_param(max_mbox_busy_wait, ushort, 0); 73MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)"); 74 75#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20) 76#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C) 77#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20) 78#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C) 79 80/* 81 * Global variables 82 */ 83 84static int hba_count; 85static adapter_t *hba_soft_state[MAX_CONTROLLERS]; 86static struct proc_dir_entry *mega_proc_dir_entry; 87 88/* For controller re-ordering */ 89static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; 90 91static long 92megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); 93 94/* 95 * The File Operations structure for the serial/ioctl interface of the driver 96 */ 97static const struct file_operations megadev_fops = { 98 .owner = THIS_MODULE, 99 .unlocked_ioctl = megadev_unlocked_ioctl, 100 .open = megadev_open, 101 .llseek = noop_llseek, 102}; 103 104/* 105 * Array to structures for storing the information about the controllers. This 106 * information is sent to the user level applications, when they do an ioctl 107 * for this information. 108 */ 109static struct mcontroller mcontroller[MAX_CONTROLLERS]; 110 111/* The current driver version */ 112static u32 driver_ver = 0x02000000; 113 114/* major number used by the device for character interface */ 115static int major; 116 117#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01) 118 119 120/* 121 * Debug variable to print some diagnostic messages 122 */ 123static int trace_level; 124 125/** 126 * mega_setup_mailbox() 127 * @adapter: pointer to our soft state 128 * 129 * Allocates a 8 byte aligned memory for the handshake mailbox. 130 */ 131static int 132mega_setup_mailbox(adapter_t *adapter) 133{ 134 unsigned long align; 135 136 adapter->una_mbox64 = dma_alloc_coherent(&adapter->dev->dev, 137 sizeof(mbox64_t), 138 &adapter->una_mbox64_dma, 139 GFP_KERNEL); 140 141 if( !adapter->una_mbox64 ) return -1; 142 143 adapter->mbox = &adapter->una_mbox64->mbox; 144 145 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & 146 (~0UL ^ 0xFUL)); 147 148 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); 149 150 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); 151 152 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; 153 154 /* 155 * Register the mailbox if the controller is an io-mapped controller 156 */ 157 if( adapter->flag & BOARD_IOMAP ) { 158 159 outb(adapter->mbox_dma & 0xFF, 160 adapter->host->io_port + MBOX_PORT0); 161 162 outb((adapter->mbox_dma >> 8) & 0xFF, 163 adapter->host->io_port + MBOX_PORT1); 164 165 outb((adapter->mbox_dma >> 16) & 0xFF, 166 adapter->host->io_port + MBOX_PORT2); 167 168 outb((adapter->mbox_dma >> 24) & 0xFF, 169 adapter->host->io_port + MBOX_PORT3); 170 171 outb(ENABLE_MBOX_BYTE, 172 adapter->host->io_port + ENABLE_MBOX_REGION); 173 174 irq_ack(adapter); 175 176 irq_enable(adapter); 177 } 178 179 return 0; 180} 181 182 183/* 184 * mega_query_adapter() 185 * @adapter - pointer to our soft state 186 * 187 * Issue the adapter inquiry commands to the controller and find out 188 * information and parameter about the devices attached 189 */ 190static int 191mega_query_adapter(adapter_t *adapter) 192{ 193 dma_addr_t prod_info_dma_handle; 194 mega_inquiry3 *inquiry3; 195 u8 raw_mbox[sizeof(struct mbox_out)]; 196 mbox_t *mbox; 197 int retval; 198 199 /* Initialize adapter inquiry mailbox */ 200 201 mbox = (mbox_t *)raw_mbox; 202 203 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 204 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 205 206 /* 207 * Try to issue Inquiry3 command 208 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and 209 * update enquiry3 structure 210 */ 211 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 212 213 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; 214 215 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 216 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ 217 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ 218 219 /* Issue a blocking command to the card */ 220 if ((retval = issue_scb_block(adapter, raw_mbox))) { 221 /* the adapter does not support 40ld */ 222 223 mraid_ext_inquiry *ext_inq; 224 mraid_inquiry *inq; 225 dma_addr_t dma_handle; 226 227 ext_inq = dma_alloc_coherent(&adapter->dev->dev, 228 sizeof(mraid_ext_inquiry), 229 &dma_handle, GFP_KERNEL); 230 231 if( ext_inq == NULL ) return -1; 232 233 inq = &ext_inq->raid_inq; 234 235 mbox->m_out.xferaddr = (u32)dma_handle; 236 237 /*issue old 0x04 command to adapter */ 238 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ; 239 240 issue_scb_block(adapter, raw_mbox); 241 242 /* 243 * update Enquiry3 and ProductInfo structures with 244 * mraid_inquiry structure 245 */ 246 mega_8_to_40ld(inq, inquiry3, 247 (mega_product_info *)&adapter->product_info); 248 249 dma_free_coherent(&adapter->dev->dev, 250 sizeof(mraid_ext_inquiry), ext_inq, 251 dma_handle); 252 253 } else { /*adapter supports 40ld */ 254 adapter->flag |= BOARD_40LD; 255 256 /* 257 * get product_info, which is static information and will be 258 * unchanged 259 */ 260 prod_info_dma_handle = dma_map_single(&adapter->dev->dev, 261 (void *)&adapter->product_info, 262 sizeof(mega_product_info), 263 DMA_FROM_DEVICE); 264 265 mbox->m_out.xferaddr = prod_info_dma_handle; 266 267 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ 268 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ 269 270 if ((retval = issue_scb_block(adapter, raw_mbox))) 271 dev_warn(&adapter->dev->dev, 272 "Product_info cmd failed with error: %d\n", 273 retval); 274 275 dma_unmap_single(&adapter->dev->dev, prod_info_dma_handle, 276 sizeof(mega_product_info), DMA_FROM_DEVICE); 277 } 278 279 280 /* 281 * kernel scans the channels from 0 to <= max_channel 282 */ 283 adapter->host->max_channel = 284 adapter->product_info.nchannels + NVIRT_CHAN -1; 285 286 adapter->host->max_id = 16; /* max targets per channel */ 287 288 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */ 289 290 adapter->host->cmd_per_lun = max_cmd_per_lun; 291 292 adapter->numldrv = inquiry3->num_ldrv; 293 294 adapter->max_cmds = adapter->product_info.max_commands; 295 296 if(adapter->max_cmds > MAX_COMMANDS) 297 adapter->max_cmds = MAX_COMMANDS; 298 299 adapter->host->can_queue = adapter->max_cmds - 1; 300 301 /* 302 * Get the maximum number of scatter-gather elements supported by this 303 * firmware 304 */ 305 mega_get_max_sgl(adapter); 306 307 adapter->host->sg_tablesize = adapter->sglen; 308 309 /* use HP firmware and bios version encoding 310 Note: fw_version[0|1] and bios_version[0|1] were originally shifted 311 right 8 bits making them zero. This 0 value was hardcoded to fix 312 sparse warnings. */ 313 if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) { 314 snprintf(adapter->fw_version, sizeof(adapter->fw_version), 315 "%c%d%d.%d%d", 316 adapter->product_info.fw_version[2], 317 0, 318 adapter->product_info.fw_version[1] & 0x0f, 319 0, 320 adapter->product_info.fw_version[0] & 0x0f); 321 snprintf(adapter->bios_version, sizeof(adapter->fw_version), 322 "%c%d%d.%d%d", 323 adapter->product_info.bios_version[2], 324 0, 325 adapter->product_info.bios_version[1] & 0x0f, 326 0, 327 adapter->product_info.bios_version[0] & 0x0f); 328 } else { 329 memcpy(adapter->fw_version, 330 (char *)adapter->product_info.fw_version, 4); 331 adapter->fw_version[4] = 0; 332 333 memcpy(adapter->bios_version, 334 (char *)adapter->product_info.bios_version, 4); 335 336 adapter->bios_version[4] = 0; 337 } 338 339 dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n", 340 adapter->fw_version, adapter->bios_version, adapter->numldrv); 341 342 /* 343 * Do we support extended (>10 bytes) cdbs 344 */ 345 adapter->support_ext_cdb = mega_support_ext_cdb(adapter); 346 if (adapter->support_ext_cdb) 347 dev_notice(&adapter->dev->dev, "supports extended CDBs\n"); 348 349 350 return 0; 351} 352 353/** 354 * mega_runpendq() 355 * @adapter: pointer to our soft state 356 * 357 * Runs through the list of pending requests. 358 */ 359static inline void 360mega_runpendq(adapter_t *adapter) 361{ 362 if(!list_empty(&adapter->pending_list)) 363 __mega_runpendq(adapter); 364} 365 366/* 367 * megaraid_queue() 368 * @scmd - Issue this scsi command 369 * @done - the callback hook into the scsi mid-layer 370 * 371 * The command queuing entry point for the mid-layer. 372 */ 373static int 374megaraid_queue_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *)) 375{ 376 adapter_t *adapter; 377 scb_t *scb; 378 int busy=0; 379 unsigned long flags; 380 381 adapter = (adapter_t *)scmd->device->host->hostdata; 382 383 scmd->scsi_done = done; 384 385 386 /* 387 * Allocate and build a SCB request 388 * busy flag will be set if mega_build_cmd() command could not 389 * allocate scb. We will return non-zero status in that case. 390 * NOTE: scb can be null even though certain commands completed 391 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would 392 * return 0 in that case. 393 */ 394 395 spin_lock_irqsave(&adapter->lock, flags); 396 scb = mega_build_cmd(adapter, scmd, &busy); 397 if (!scb) 398 goto out; 399 400 scb->state |= SCB_PENDQ; 401 list_add_tail(&scb->list, &adapter->pending_list); 402 403 /* 404 * Check if the HBA is in quiescent state, e.g., during a 405 * delete logical drive opertion. If it is, don't run 406 * the pending_list. 407 */ 408 if (atomic_read(&adapter->quiescent) == 0) 409 mega_runpendq(adapter); 410 411 busy = 0; 412 out: 413 spin_unlock_irqrestore(&adapter->lock, flags); 414 return busy; 415} 416 417static DEF_SCSI_QCMD(megaraid_queue) 418 419/** 420 * mega_allocate_scb() 421 * @adapter: pointer to our soft state 422 * @cmd: scsi command from the mid-layer 423 * 424 * Allocate a SCB structure. This is the central structure for controller 425 * commands. 426 */ 427static inline scb_t * 428mega_allocate_scb(adapter_t *adapter, struct scsi_cmnd *cmd) 429{ 430 struct list_head *head = &adapter->free_list; 431 scb_t *scb; 432 433 /* Unlink command from Free List */ 434 if( !list_empty(head) ) { 435 436 scb = list_entry(head->next, scb_t, list); 437 438 list_del_init(head->next); 439 440 scb->state = SCB_ACTIVE; 441 scb->cmd = cmd; 442 scb->dma_type = MEGA_DMA_TYPE_NONE; 443 444 return scb; 445 } 446 447 return NULL; 448} 449 450/** 451 * mega_get_ldrv_num() 452 * @adapter: pointer to our soft state 453 * @cmd: scsi mid layer command 454 * @channel: channel on the controller 455 * 456 * Calculate the logical drive number based on the information in scsi command 457 * and the channel number. 458 */ 459static inline int 460mega_get_ldrv_num(adapter_t *adapter, struct scsi_cmnd *cmd, int channel) 461{ 462 int tgt; 463 int ldrv_num; 464 465 tgt = cmd->device->id; 466 467 if ( tgt > adapter->this_id ) 468 tgt--; /* we do not get inquires for initiator id */ 469 470 ldrv_num = (channel * 15) + tgt; 471 472 473 /* 474 * If we have a logical drive with boot enabled, project it first 475 */ 476 if( adapter->boot_ldrv_enabled ) { 477 if( ldrv_num == 0 ) { 478 ldrv_num = adapter->boot_ldrv; 479 } 480 else { 481 if( ldrv_num <= adapter->boot_ldrv ) { 482 ldrv_num--; 483 } 484 } 485 } 486 487 /* 488 * If "delete logical drive" feature is enabled on this controller. 489 * Do only if at least one delete logical drive operation was done. 490 * 491 * Also, after logical drive deletion, instead of logical drive number, 492 * the value returned should be 0x80+logical drive id. 493 * 494 * These is valid only for IO commands. 495 */ 496 497 if (adapter->support_random_del && adapter->read_ldidmap ) 498 switch (cmd->cmnd[0]) { 499 case READ_6: 500 case WRITE_6: 501 case READ_10: 502 case WRITE_10: 503 ldrv_num += 0x80; 504 } 505 506 return ldrv_num; 507} 508 509/** 510 * mega_build_cmd() 511 * @adapter: pointer to our soft state 512 * @cmd: Prepare using this scsi command 513 * @busy: busy flag if no resources 514 * 515 * Prepares a command and scatter gather list for the controller. This routine 516 * also finds out if the commands is intended for a logical drive or a 517 * physical device and prepares the controller command accordingly. 518 * 519 * We also re-order the logical drives and physical devices based on their 520 * boot settings. 521 */ 522static scb_t * 523mega_build_cmd(adapter_t *adapter, struct scsi_cmnd *cmd, int *busy) 524{ 525 mega_passthru *pthru; 526 scb_t *scb; 527 mbox_t *mbox; 528 u32 seg; 529 char islogical; 530 int max_ldrv_num; 531 int channel = 0; 532 int target = 0; 533 int ldrv_num = 0; /* logical drive number */ 534 535 /* 536 * We know what channels our logical drives are on - mega_find_card() 537 */ 538 islogical = adapter->logdrv_chan[cmd->device->channel]; 539 540 /* 541 * The theory: If physical drive is chosen for boot, all the physical 542 * devices are exported before the logical drives, otherwise physical 543 * devices are pushed after logical drives, in which case - Kernel sees 544 * the physical devices on virtual channel which is obviously converted 545 * to actual channel on the HBA. 546 */ 547 if( adapter->boot_pdrv_enabled ) { 548 if( islogical ) { 549 /* logical channel */ 550 channel = cmd->device->channel - 551 adapter->product_info.nchannels; 552 } 553 else { 554 /* this is physical channel */ 555 channel = cmd->device->channel; 556 target = cmd->device->id; 557 558 /* 559 * boot from a physical disk, that disk needs to be 560 * exposed first IF both the channels are SCSI, then 561 * booting from the second channel is not allowed. 562 */ 563 if( target == 0 ) { 564 target = adapter->boot_pdrv_tgt; 565 } 566 else if( target == adapter->boot_pdrv_tgt ) { 567 target = 0; 568 } 569 } 570 } 571 else { 572 if( islogical ) { 573 /* this is the logical channel */ 574 channel = cmd->device->channel; 575 } 576 else { 577 /* physical channel */ 578 channel = cmd->device->channel - NVIRT_CHAN; 579 target = cmd->device->id; 580 } 581 } 582 583 584 if(islogical) { 585 586 /* have just LUN 0 for each target on virtual channels */ 587 if (cmd->device->lun) { 588 cmd->result = (DID_BAD_TARGET << 16); 589 cmd->scsi_done(cmd); 590 return NULL; 591 } 592 593 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); 594 595 596 max_ldrv_num = (adapter->flag & BOARD_40LD) ? 597 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; 598 599 /* 600 * max_ldrv_num increases by 0x80 if some logical drive was 601 * deleted. 602 */ 603 if(adapter->read_ldidmap) 604 max_ldrv_num += 0x80; 605 606 if(ldrv_num > max_ldrv_num ) { 607 cmd->result = (DID_BAD_TARGET << 16); 608 cmd->scsi_done(cmd); 609 return NULL; 610 } 611 612 } 613 else { 614 if( cmd->device->lun > 7) { 615 /* 616 * Do not support lun >7 for physically accessed 617 * devices 618 */ 619 cmd->result = (DID_BAD_TARGET << 16); 620 cmd->scsi_done(cmd); 621 return NULL; 622 } 623 } 624 625 /* 626 * 627 * Logical drive commands 628 * 629 */ 630 if(islogical) { 631 switch (cmd->cmnd[0]) { 632 case TEST_UNIT_READY: 633#if MEGA_HAVE_CLUSTERING 634 /* 635 * Do we support clustering and is the support enabled 636 * If no, return success always 637 */ 638 if( !adapter->has_cluster ) { 639 cmd->result = (DID_OK << 16); 640 cmd->scsi_done(cmd); 641 return NULL; 642 } 643 644 if(!(scb = mega_allocate_scb(adapter, cmd))) { 645 *busy = 1; 646 return NULL; 647 } 648 649 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 650 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; 651 scb->raw_mbox[3] = ldrv_num; 652 653 scb->dma_direction = DMA_NONE; 654 655 return scb; 656#else 657 cmd->result = (DID_OK << 16); 658 cmd->scsi_done(cmd); 659 return NULL; 660#endif 661 662 case MODE_SENSE: { 663 char *buf; 664 struct scatterlist *sg; 665 666 sg = scsi_sglist(cmd); 667 buf = kmap_atomic(sg_page(sg)) + sg->offset; 668 669 memset(buf, 0, cmd->cmnd[4]); 670 kunmap_atomic(buf - sg->offset); 671 672 cmd->result = (DID_OK << 16); 673 cmd->scsi_done(cmd); 674 return NULL; 675 } 676 677 case READ_CAPACITY: 678 case INQUIRY: 679 680 if(!(adapter->flag & (1L << cmd->device->channel))) { 681 682 dev_notice(&adapter->dev->dev, 683 "scsi%d: scanning scsi channel %d " 684 "for logical drives\n", 685 adapter->host->host_no, 686 cmd->device->channel); 687 688 adapter->flag |= (1L << cmd->device->channel); 689 } 690 691 /* Allocate a SCB and initialize passthru */ 692 if(!(scb = mega_allocate_scb(adapter, cmd))) { 693 *busy = 1; 694 return NULL; 695 } 696 pthru = scb->pthru; 697 698 mbox = (mbox_t *)scb->raw_mbox; 699 memset(mbox, 0, sizeof(scb->raw_mbox)); 700 memset(pthru, 0, sizeof(mega_passthru)); 701 702 pthru->timeout = 0; 703 pthru->ars = 1; 704 pthru->reqsenselen = 14; 705 pthru->islogical = 1; 706 pthru->logdrv = ldrv_num; 707 pthru->cdblen = cmd->cmd_len; 708 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 709 710 if( adapter->has_64bit_addr ) { 711 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 712 } 713 else { 714 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 715 } 716 717 scb->dma_direction = DMA_FROM_DEVICE; 718 719 pthru->numsgelements = mega_build_sglist(adapter, scb, 720 &pthru->dataxferaddr, &pthru->dataxferlen); 721 722 mbox->m_out.xferaddr = scb->pthru_dma_addr; 723 724 return scb; 725 726 case READ_6: 727 case WRITE_6: 728 case READ_10: 729 case WRITE_10: 730 case READ_12: 731 case WRITE_12: 732 733 /* Allocate a SCB and initialize mailbox */ 734 if(!(scb = mega_allocate_scb(adapter, cmd))) { 735 *busy = 1; 736 return NULL; 737 } 738 mbox = (mbox_t *)scb->raw_mbox; 739 740 memset(mbox, 0, sizeof(scb->raw_mbox)); 741 mbox->m_out.logdrv = ldrv_num; 742 743 /* 744 * A little hack: 2nd bit is zero for all scsi read 745 * commands and is set for all scsi write commands 746 */ 747 if( adapter->has_64bit_addr ) { 748 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 749 MEGA_MBOXCMD_LWRITE64: 750 MEGA_MBOXCMD_LREAD64 ; 751 } 752 else { 753 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? 754 MEGA_MBOXCMD_LWRITE: 755 MEGA_MBOXCMD_LREAD ; 756 } 757 758 /* 759 * 6-byte READ(0x08) or WRITE(0x0A) cdb 760 */ 761 if( cmd->cmd_len == 6 ) { 762 mbox->m_out.numsectors = (u32) cmd->cmnd[4]; 763 mbox->m_out.lba = 764 ((u32)cmd->cmnd[1] << 16) | 765 ((u32)cmd->cmnd[2] << 8) | 766 (u32)cmd->cmnd[3]; 767 768 mbox->m_out.lba &= 0x1FFFFF; 769 770#if MEGA_HAVE_STATS 771 /* 772 * Take modulo 0x80, since the logical drive 773 * number increases by 0x80 when a logical 774 * drive was deleted 775 */ 776 if (*cmd->cmnd == READ_6) { 777 adapter->nreads[ldrv_num%0x80]++; 778 adapter->nreadblocks[ldrv_num%0x80] += 779 mbox->m_out.numsectors; 780 } else { 781 adapter->nwrites[ldrv_num%0x80]++; 782 adapter->nwriteblocks[ldrv_num%0x80] += 783 mbox->m_out.numsectors; 784 } 785#endif 786 } 787 788 /* 789 * 10-byte READ(0x28) or WRITE(0x2A) cdb 790 */ 791 if( cmd->cmd_len == 10 ) { 792 mbox->m_out.numsectors = 793 (u32)cmd->cmnd[8] | 794 ((u32)cmd->cmnd[7] << 8); 795 mbox->m_out.lba = 796 ((u32)cmd->cmnd[2] << 24) | 797 ((u32)cmd->cmnd[3] << 16) | 798 ((u32)cmd->cmnd[4] << 8) | 799 (u32)cmd->cmnd[5]; 800 801#if MEGA_HAVE_STATS 802 if (*cmd->cmnd == READ_10) { 803 adapter->nreads[ldrv_num%0x80]++; 804 adapter->nreadblocks[ldrv_num%0x80] += 805 mbox->m_out.numsectors; 806 } else { 807 adapter->nwrites[ldrv_num%0x80]++; 808 adapter->nwriteblocks[ldrv_num%0x80] += 809 mbox->m_out.numsectors; 810 } 811#endif 812 } 813 814 /* 815 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 816 */ 817 if( cmd->cmd_len == 12 ) { 818 mbox->m_out.lba = 819 ((u32)cmd->cmnd[2] << 24) | 820 ((u32)cmd->cmnd[3] << 16) | 821 ((u32)cmd->cmnd[4] << 8) | 822 (u32)cmd->cmnd[5]; 823 824 mbox->m_out.numsectors = 825 ((u32)cmd->cmnd[6] << 24) | 826 ((u32)cmd->cmnd[7] << 16) | 827 ((u32)cmd->cmnd[8] << 8) | 828 (u32)cmd->cmnd[9]; 829 830#if MEGA_HAVE_STATS 831 if (*cmd->cmnd == READ_12) { 832 adapter->nreads[ldrv_num%0x80]++; 833 adapter->nreadblocks[ldrv_num%0x80] += 834 mbox->m_out.numsectors; 835 } else { 836 adapter->nwrites[ldrv_num%0x80]++; 837 adapter->nwriteblocks[ldrv_num%0x80] += 838 mbox->m_out.numsectors; 839 } 840#endif 841 } 842 843 /* 844 * If it is a read command 845 */ 846 if( (*cmd->cmnd & 0x0F) == 0x08 ) { 847 scb->dma_direction = DMA_FROM_DEVICE; 848 } 849 else { 850 scb->dma_direction = DMA_TO_DEVICE; 851 } 852 853 /* Calculate Scatter-Gather info */ 854 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, 855 (u32 *)&mbox->m_out.xferaddr, &seg); 856 857 return scb; 858 859#if MEGA_HAVE_CLUSTERING 860 case RESERVE: 861 case RELEASE: 862 863 /* 864 * Do we support clustering and is the support enabled 865 */ 866 if( ! adapter->has_cluster ) { 867 868 cmd->result = (DID_BAD_TARGET << 16); 869 cmd->scsi_done(cmd); 870 return NULL; 871 } 872 873 /* Allocate a SCB and initialize mailbox */ 874 if(!(scb = mega_allocate_scb(adapter, cmd))) { 875 *busy = 1; 876 return NULL; 877 } 878 879 scb->raw_mbox[0] = MEGA_CLUSTER_CMD; 880 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? 881 MEGA_RESERVE_LD : MEGA_RELEASE_LD; 882 883 scb->raw_mbox[3] = ldrv_num; 884 885 scb->dma_direction = DMA_NONE; 886 887 return scb; 888#endif 889 890 default: 891 cmd->result = (DID_BAD_TARGET << 16); 892 cmd->scsi_done(cmd); 893 return NULL; 894 } 895 } 896 897 /* 898 * Passthru drive commands 899 */ 900 else { 901 /* Allocate a SCB and initialize passthru */ 902 if(!(scb = mega_allocate_scb(adapter, cmd))) { 903 *busy = 1; 904 return NULL; 905 } 906 907 mbox = (mbox_t *)scb->raw_mbox; 908 memset(mbox, 0, sizeof(scb->raw_mbox)); 909 910 if( adapter->support_ext_cdb ) { 911 912 mega_prepare_extpassthru(adapter, scb, cmd, 913 channel, target); 914 915 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; 916 917 mbox->m_out.xferaddr = scb->epthru_dma_addr; 918 919 } 920 else { 921 922 pthru = mega_prepare_passthru(adapter, scb, cmd, 923 channel, target); 924 925 /* Initialize mailbox */ 926 if( adapter->has_64bit_addr ) { 927 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; 928 } 929 else { 930 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; 931 } 932 933 mbox->m_out.xferaddr = scb->pthru_dma_addr; 934 935 } 936 return scb; 937 } 938 return NULL; 939} 940 941 942/** 943 * mega_prepare_passthru() 944 * @adapter: pointer to our soft state 945 * @scb: our scsi control block 946 * @cmd: scsi command from the mid-layer 947 * @channel: actual channel on the controller 948 * @target: actual id on the controller. 949 * 950 * prepare a command for the scsi physical devices. 951 */ 952static mega_passthru * 953mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd, 954 int channel, int target) 955{ 956 mega_passthru *pthru; 957 958 pthru = scb->pthru; 959 memset(pthru, 0, sizeof (mega_passthru)); 960 961 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 962 pthru->timeout = 2; 963 964 pthru->ars = 1; 965 pthru->reqsenselen = 14; 966 pthru->islogical = 0; 967 968 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 969 970 pthru->target = (adapter->flag & BOARD_40LD) ? 971 (channel << 4) | target : target; 972 973 pthru->cdblen = cmd->cmd_len; 974 pthru->logdrv = cmd->device->lun; 975 976 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); 977 978 /* Not sure about the direction */ 979 scb->dma_direction = DMA_BIDIRECTIONAL; 980 981 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ 982 switch (cmd->cmnd[0]) { 983 case INQUIRY: 984 case READ_CAPACITY: 985 if(!(adapter->flag & (1L << cmd->device->channel))) { 986 987 dev_notice(&adapter->dev->dev, 988 "scsi%d: scanning scsi channel %d [P%d] " 989 "for physical devices\n", 990 adapter->host->host_no, 991 cmd->device->channel, channel); 992 993 adapter->flag |= (1L << cmd->device->channel); 994 } 995 fallthrough; 996 default: 997 pthru->numsgelements = mega_build_sglist(adapter, scb, 998 &pthru->dataxferaddr, &pthru->dataxferlen); 999 break; 1000 } 1001 return pthru; 1002} 1003 1004 1005/** 1006 * mega_prepare_extpassthru() 1007 * @adapter: pointer to our soft state 1008 * @scb: our scsi control block 1009 * @cmd: scsi command from the mid-layer 1010 * @channel: actual channel on the controller 1011 * @target: actual id on the controller. 1012 * 1013 * prepare a command for the scsi physical devices. This rountine prepares 1014 * commands for devices which can take extended CDBs (>10 bytes) 1015 */ 1016static mega_ext_passthru * 1017mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, 1018 struct scsi_cmnd *cmd, 1019 int channel, int target) 1020{ 1021 mega_ext_passthru *epthru; 1022 1023 epthru = scb->epthru; 1024 memset(epthru, 0, sizeof(mega_ext_passthru)); 1025 1026 /* 0=6sec/1=60sec/2=10min/3=3hrs */ 1027 epthru->timeout = 2; 1028 1029 epthru->ars = 1; 1030 epthru->reqsenselen = 14; 1031 epthru->islogical = 0; 1032 1033 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; 1034 epthru->target = (adapter->flag & BOARD_40LD) ? 1035 (channel << 4) | target : target; 1036 1037 epthru->cdblen = cmd->cmd_len; 1038 epthru->logdrv = cmd->device->lun; 1039 1040 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); 1041 1042 /* Not sure about the direction */ 1043 scb->dma_direction = DMA_BIDIRECTIONAL; 1044 1045 switch(cmd->cmnd[0]) { 1046 case INQUIRY: 1047 case READ_CAPACITY: 1048 if(!(adapter->flag & (1L << cmd->device->channel))) { 1049 1050 dev_notice(&adapter->dev->dev, 1051 "scsi%d: scanning scsi channel %d [P%d] " 1052 "for physical devices\n", 1053 adapter->host->host_no, 1054 cmd->device->channel, channel); 1055 1056 adapter->flag |= (1L << cmd->device->channel); 1057 } 1058 fallthrough; 1059 default: 1060 epthru->numsgelements = mega_build_sglist(adapter, scb, 1061 &epthru->dataxferaddr, &epthru->dataxferlen); 1062 break; 1063 } 1064 1065 return epthru; 1066} 1067 1068static void 1069__mega_runpendq(adapter_t *adapter) 1070{ 1071 scb_t *scb; 1072 struct list_head *pos, *next; 1073 1074 /* Issue any pending commands to the card */ 1075 list_for_each_safe(pos, next, &adapter->pending_list) { 1076 1077 scb = list_entry(pos, scb_t, list); 1078 1079 if( !(scb->state & SCB_ISSUED) ) { 1080 1081 if( issue_scb(adapter, scb) != 0 ) 1082 return; 1083 } 1084 } 1085 1086 return; 1087} 1088 1089 1090/** 1091 * issue_scb() 1092 * @adapter: pointer to our soft state 1093 * @scb: scsi control block 1094 * 1095 * Post a command to the card if the mailbox is available, otherwise return 1096 * busy. We also take the scb from the pending list if the mailbox is 1097 * available. 1098 */ 1099static int 1100issue_scb(adapter_t *adapter, scb_t *scb) 1101{ 1102 volatile mbox64_t *mbox64 = adapter->mbox64; 1103 volatile mbox_t *mbox = adapter->mbox; 1104 unsigned int i = 0; 1105 1106 if(unlikely(mbox->m_in.busy)) { 1107 do { 1108 udelay(1); 1109 i++; 1110 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); 1111 1112 if(mbox->m_in.busy) return -1; 1113 } 1114 1115 /* Copy mailbox data into host structure */ 1116 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1117 sizeof(struct mbox_out)); 1118 1119 mbox->m_out.cmdid = scb->idx; /* Set cmdid */ 1120 mbox->m_in.busy = 1; /* Set busy */ 1121 1122 1123 /* 1124 * Increment the pending queue counter 1125 */ 1126 atomic_inc(&adapter->pend_cmds); 1127 1128 switch (mbox->m_out.cmd) { 1129 case MEGA_MBOXCMD_LREAD64: 1130 case MEGA_MBOXCMD_LWRITE64: 1131 case MEGA_MBOXCMD_PASSTHRU64: 1132 case MEGA_MBOXCMD_EXTPTHRU: 1133 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1134 mbox64->xfer_segment_hi = 0; 1135 mbox->m_out.xferaddr = 0xFFFFFFFF; 1136 break; 1137 default: 1138 mbox64->xfer_segment_lo = 0; 1139 mbox64->xfer_segment_hi = 0; 1140 } 1141 1142 /* 1143 * post the command 1144 */ 1145 scb->state |= SCB_ISSUED; 1146 1147 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1148 mbox->m_in.poll = 0; 1149 mbox->m_in.ack = 0; 1150 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1151 } 1152 else { 1153 irq_enable(adapter); 1154 issue_command(adapter); 1155 } 1156 1157 return 0; 1158} 1159 1160/* 1161 * Wait until the controller's mailbox is available 1162 */ 1163static inline int 1164mega_busywait_mbox (adapter_t *adapter) 1165{ 1166 if (adapter->mbox->m_in.busy) 1167 return __mega_busywait_mbox(adapter); 1168 return 0; 1169} 1170 1171/** 1172 * issue_scb_block() 1173 * @adapter: pointer to our soft state 1174 * @raw_mbox: the mailbox 1175 * 1176 * Issue a scb in synchronous and non-interrupt mode 1177 */ 1178static int 1179issue_scb_block(adapter_t *adapter, u_char *raw_mbox) 1180{ 1181 volatile mbox64_t *mbox64 = adapter->mbox64; 1182 volatile mbox_t *mbox = adapter->mbox; 1183 u8 byte; 1184 1185 /* Wait until mailbox is free */ 1186 if(mega_busywait_mbox (adapter)) 1187 goto bug_blocked_mailbox; 1188 1189 /* Copy mailbox data into host structure */ 1190 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); 1191 mbox->m_out.cmdid = 0xFE; 1192 mbox->m_in.busy = 1; 1193 1194 switch (raw_mbox[0]) { 1195 case MEGA_MBOXCMD_LREAD64: 1196 case MEGA_MBOXCMD_LWRITE64: 1197 case MEGA_MBOXCMD_PASSTHRU64: 1198 case MEGA_MBOXCMD_EXTPTHRU: 1199 mbox64->xfer_segment_lo = mbox->m_out.xferaddr; 1200 mbox64->xfer_segment_hi = 0; 1201 mbox->m_out.xferaddr = 0xFFFFFFFF; 1202 break; 1203 default: 1204 mbox64->xfer_segment_lo = 0; 1205 mbox64->xfer_segment_hi = 0; 1206 } 1207 1208 if( likely(adapter->flag & BOARD_MEMMAP) ) { 1209 mbox->m_in.poll = 0; 1210 mbox->m_in.ack = 0; 1211 mbox->m_in.numstatus = 0xFF; 1212 mbox->m_in.status = 0xFF; 1213 WRINDOOR(adapter, adapter->mbox_dma | 0x1); 1214 1215 while((volatile u8)mbox->m_in.numstatus == 0xFF) 1216 cpu_relax(); 1217 1218 mbox->m_in.numstatus = 0xFF; 1219 1220 while( (volatile u8)mbox->m_in.poll != 0x77 ) 1221 cpu_relax(); 1222 1223 mbox->m_in.poll = 0; 1224 mbox->m_in.ack = 0x77; 1225 1226 WRINDOOR(adapter, adapter->mbox_dma | 0x2); 1227 1228 while(RDINDOOR(adapter) & 0x2) 1229 cpu_relax(); 1230 } 1231 else { 1232 irq_disable(adapter); 1233 issue_command(adapter); 1234 1235 while (!((byte = irq_state(adapter)) & INTR_VALID)) 1236 cpu_relax(); 1237 1238 set_irq_state(adapter, byte); 1239 irq_enable(adapter); 1240 irq_ack(adapter); 1241 } 1242 1243 return mbox->m_in.status; 1244 1245bug_blocked_mailbox: 1246 dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n"); 1247 udelay (1000); 1248 return -1; 1249} 1250 1251 1252/** 1253 * megaraid_isr_iomapped() 1254 * @irq: irq 1255 * @devp: pointer to our soft state 1256 * 1257 * Interrupt service routine for io-mapped controllers. 1258 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1259 * and service the completed commands. 1260 */ 1261static irqreturn_t 1262megaraid_isr_iomapped(int irq, void *devp) 1263{ 1264 adapter_t *adapter = devp; 1265 unsigned long flags; 1266 u8 status; 1267 u8 nstatus; 1268 u8 completed[MAX_FIRMWARE_STATUS]; 1269 u8 byte; 1270 int handled = 0; 1271 1272 1273 /* 1274 * loop till F/W has more commands for us to complete. 1275 */ 1276 spin_lock_irqsave(&adapter->lock, flags); 1277 1278 do { 1279 /* Check if a valid interrupt is pending */ 1280 byte = irq_state(adapter); 1281 if( (byte & VALID_INTR_BYTE) == 0 ) { 1282 /* 1283 * No more pending commands 1284 */ 1285 goto out_unlock; 1286 } 1287 set_irq_state(adapter, byte); 1288 1289 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1290 == 0xFF) 1291 cpu_relax(); 1292 adapter->mbox->m_in.numstatus = 0xFF; 1293 1294 status = adapter->mbox->m_in.status; 1295 1296 /* 1297 * decrement the pending queue counter 1298 */ 1299 atomic_sub(nstatus, &adapter->pend_cmds); 1300 1301 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1302 nstatus); 1303 1304 /* Acknowledge interrupt */ 1305 irq_ack(adapter); 1306 1307 mega_cmd_done(adapter, completed, nstatus, status); 1308 1309 mega_rundoneq(adapter); 1310 1311 handled = 1; 1312 1313 /* Loop through any pending requests */ 1314 if(atomic_read(&adapter->quiescent) == 0) { 1315 mega_runpendq(adapter); 1316 } 1317 1318 } while(1); 1319 1320 out_unlock: 1321 1322 spin_unlock_irqrestore(&adapter->lock, flags); 1323 1324 return IRQ_RETVAL(handled); 1325} 1326 1327 1328/** 1329 * megaraid_isr_memmapped() 1330 * @irq: irq 1331 * @devp: pointer to our soft state 1332 * 1333 * Interrupt service routine for memory-mapped controllers. 1334 * Find out if our device is interrupting. If yes, acknowledge the interrupt 1335 * and service the completed commands. 1336 */ 1337static irqreturn_t 1338megaraid_isr_memmapped(int irq, void *devp) 1339{ 1340 adapter_t *adapter = devp; 1341 unsigned long flags; 1342 u8 status; 1343 u32 dword = 0; 1344 u8 nstatus; 1345 u8 completed[MAX_FIRMWARE_STATUS]; 1346 int handled = 0; 1347 1348 1349 /* 1350 * loop till F/W has more commands for us to complete. 1351 */ 1352 spin_lock_irqsave(&adapter->lock, flags); 1353 1354 do { 1355 /* Check if a valid interrupt is pending */ 1356 dword = RDOUTDOOR(adapter); 1357 if(dword != 0x10001234) { 1358 /* 1359 * No more pending commands 1360 */ 1361 goto out_unlock; 1362 } 1363 WROUTDOOR(adapter, 0x10001234); 1364 1365 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) 1366 == 0xFF) { 1367 cpu_relax(); 1368 } 1369 adapter->mbox->m_in.numstatus = 0xFF; 1370 1371 status = adapter->mbox->m_in.status; 1372 1373 /* 1374 * decrement the pending queue counter 1375 */ 1376 atomic_sub(nstatus, &adapter->pend_cmds); 1377 1378 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1379 nstatus); 1380 1381 /* Acknowledge interrupt */ 1382 WRINDOOR(adapter, 0x2); 1383 1384 handled = 1; 1385 1386 while( RDINDOOR(adapter) & 0x02 ) 1387 cpu_relax(); 1388 1389 mega_cmd_done(adapter, completed, nstatus, status); 1390 1391 mega_rundoneq(adapter); 1392 1393 /* Loop through any pending requests */ 1394 if(atomic_read(&adapter->quiescent) == 0) { 1395 mega_runpendq(adapter); 1396 } 1397 1398 } while(1); 1399 1400 out_unlock: 1401 1402 spin_unlock_irqrestore(&adapter->lock, flags); 1403 1404 return IRQ_RETVAL(handled); 1405} 1406/** 1407 * mega_cmd_done() 1408 * @adapter: pointer to our soft state 1409 * @completed: array of ids of completed commands 1410 * @nstatus: number of completed commands 1411 * @status: status of the last command completed 1412 * 1413 * Complete the commands and call the scsi mid-layer callback hooks. 1414 */ 1415static void 1416mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) 1417{ 1418 mega_ext_passthru *epthru = NULL; 1419 struct scatterlist *sgl; 1420 struct scsi_cmnd *cmd = NULL; 1421 mega_passthru *pthru = NULL; 1422 mbox_t *mbox = NULL; 1423 u8 c; 1424 scb_t *scb; 1425 int islogical; 1426 int cmdid; 1427 int i; 1428 1429 /* 1430 * for all the commands completed, call the mid-layer callback routine 1431 * and free the scb. 1432 */ 1433 for( i = 0; i < nstatus; i++ ) { 1434 1435 cmdid = completed[i]; 1436 1437 /* 1438 * Only free SCBs for the commands coming down from the 1439 * mid-layer, not for which were issued internally 1440 * 1441 * For internal command, restore the status returned by the 1442 * firmware so that user can interpret it. 1443 */ 1444 if (cmdid == CMDID_INT_CMDS) { 1445 scb = &adapter->int_scb; 1446 cmd = scb->cmd; 1447 1448 list_del_init(&scb->list); 1449 scb->state = SCB_FREE; 1450 1451 adapter->int_status = status; 1452 complete(&adapter->int_waitq); 1453 } else { 1454 scb = &adapter->scb_list[cmdid]; 1455 1456 /* 1457 * Make sure f/w has completed a valid command 1458 */ 1459 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { 1460 dev_crit(&adapter->dev->dev, "invalid command " 1461 "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 dev_warn(&adapter->dev->dev, 1473 "aborted cmd [%x] complete\n", 1474 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 dev_warn(&adapter->dev->dev, 1492 "reset cmd [%x] complete\n", 1493 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 sgl = scsi_sglist(cmd); 1555 if( sg_page(sgl) ) { 1556 c = *(unsigned char *) sg_virt(&sgl[0]); 1557 } else { 1558 dev_warn(&adapter->dev->dev, "invalid sg\n"); 1559 c = 0; 1560 } 1561 1562 if(IS_RAID_CH(adapter, cmd->device->channel) && 1563 ((c & 0x1F ) == TYPE_DISK)) { 1564 status = 0xF0; 1565 } 1566 } 1567 1568 /* clear result; otherwise, success returns corrupt value */ 1569 cmd->result = 0; 1570 1571 /* Convert MegaRAID status to Linux error code */ 1572 switch (status) { 1573 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ 1574 cmd->result |= (DID_OK << 16); 1575 break; 1576 1577 case 0x02: /* ERROR_ABORTED, i.e. 1578 SCSI_STATUS_CHECK_CONDITION */ 1579 1580 /* set sense_buffer and result fields */ 1581 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || 1582 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { 1583 1584 memcpy(cmd->sense_buffer, pthru->reqsensearea, 1585 14); 1586 1587 cmd->result = (DRIVER_SENSE << 24) | 1588 (DID_OK << 16) | 1589 (CHECK_CONDITION << 1); 1590 } 1591 else { 1592 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { 1593 1594 memcpy(cmd->sense_buffer, 1595 epthru->reqsensearea, 14); 1596 1597 cmd->result = (DRIVER_SENSE << 24) | 1598 (DID_OK << 16) | 1599 (CHECK_CONDITION << 1); 1600 } else { 1601 cmd->sense_buffer[0] = 0x70; 1602 cmd->sense_buffer[2] = ABORTED_COMMAND; 1603 cmd->result |= (CHECK_CONDITION << 1); 1604 } 1605 } 1606 break; 1607 1608 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. 1609 SCSI_STATUS_BUSY */ 1610 cmd->result |= (DID_BUS_BUSY << 16) | status; 1611 break; 1612 1613 default: 1614#if MEGA_HAVE_CLUSTERING 1615 /* 1616 * If TEST_UNIT_READY fails, we know 1617 * MEGA_RESERVATION_STATUS failed 1618 */ 1619 if( cmd->cmnd[0] == TEST_UNIT_READY ) { 1620 cmd->result |= (DID_ERROR << 16) | 1621 (RESERVATION_CONFLICT << 1); 1622 } 1623 else 1624 /* 1625 * Error code returned is 1 if Reserve or Release 1626 * failed or the input parameter is invalid 1627 */ 1628 if( status == 1 && 1629 (cmd->cmnd[0] == RESERVE || 1630 cmd->cmnd[0] == RELEASE) ) { 1631 1632 cmd->result |= (DID_ERROR << 16) | 1633 (RESERVATION_CONFLICT << 1); 1634 } 1635 else 1636#endif 1637 cmd->result |= (DID_BAD_TARGET << 16)|status; 1638 } 1639 1640 mega_free_scb(adapter, scb); 1641 1642 /* Add Scsi_Command to end of completed queue */ 1643 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); 1644 } 1645} 1646 1647 1648/* 1649 * mega_runpendq() 1650 * 1651 * Run through the list of completed requests and finish it 1652 */ 1653static void 1654mega_rundoneq (adapter_t *adapter) 1655{ 1656 struct scsi_cmnd *cmd; 1657 struct list_head *pos; 1658 1659 list_for_each(pos, &adapter->completed_list) { 1660 1661 struct scsi_pointer* spos = (struct scsi_pointer *)pos; 1662 1663 cmd = list_entry(spos, struct scsi_cmnd, SCp); 1664 cmd->scsi_done(cmd); 1665 } 1666 1667 INIT_LIST_HEAD(&adapter->completed_list); 1668} 1669 1670 1671/* 1672 * Free a SCB structure 1673 * Note: We assume the scsi commands associated with this scb is not free yet. 1674 */ 1675static void 1676mega_free_scb(adapter_t *adapter, scb_t *scb) 1677{ 1678 switch( scb->dma_type ) { 1679 1680 case MEGA_DMA_TYPE_NONE: 1681 break; 1682 1683 case MEGA_SGLIST: 1684 scsi_dma_unmap(scb->cmd); 1685 break; 1686 default: 1687 break; 1688 } 1689 1690 /* 1691 * Remove from the pending list 1692 */ 1693 list_del_init(&scb->list); 1694 1695 /* Link the scb back into free list */ 1696 scb->state = SCB_FREE; 1697 scb->cmd = NULL; 1698 1699 list_add(&scb->list, &adapter->free_list); 1700} 1701 1702 1703static int 1704__mega_busywait_mbox (adapter_t *adapter) 1705{ 1706 volatile mbox_t *mbox = adapter->mbox; 1707 long counter; 1708 1709 for (counter = 0; counter < 10000; counter++) { 1710 if (!mbox->m_in.busy) 1711 return 0; 1712 udelay(100); 1713 cond_resched(); 1714 } 1715 return -1; /* give up after 1 second */ 1716} 1717 1718/* 1719 * Copies data to SGLIST 1720 * Note: For 64 bit cards, we need a minimum of one SG element for read/write 1721 */ 1722static int 1723mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) 1724{ 1725 struct scatterlist *sg; 1726 struct scsi_cmnd *cmd; 1727 int sgcnt; 1728 int idx; 1729 1730 cmd = scb->cmd; 1731 1732 /* 1733 * Copy Scatter-Gather list info into controller structure. 1734 * 1735 * The number of sg elements returned must not exceed our limit 1736 */ 1737 sgcnt = scsi_dma_map(cmd); 1738 1739 scb->dma_type = MEGA_SGLIST; 1740 1741 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0); 1742 1743 *len = 0; 1744 1745 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { 1746 sg = scsi_sglist(cmd); 1747 scb->dma_h_bulkdata = sg_dma_address(sg); 1748 *buf = (u32)scb->dma_h_bulkdata; 1749 *len = sg_dma_len(sg); 1750 return 0; 1751 } 1752 1753 scsi_for_each_sg(cmd, sg, sgcnt, idx) { 1754 if (adapter->has_64bit_addr) { 1755 scb->sgl64[idx].address = sg_dma_address(sg); 1756 *len += scb->sgl64[idx].length = sg_dma_len(sg); 1757 } else { 1758 scb->sgl[idx].address = sg_dma_address(sg); 1759 *len += scb->sgl[idx].length = sg_dma_len(sg); 1760 } 1761 } 1762 1763 /* Reset pointer and length fields */ 1764 *buf = scb->sgl_dma_addr; 1765 1766 /* Return count of SG requests */ 1767 return sgcnt; 1768} 1769 1770 1771/* 1772 * mega_8_to_40ld() 1773 * 1774 * takes all info in AdapterInquiry structure and puts it into ProductInfo and 1775 * Enquiry3 structures for later use 1776 */ 1777static void 1778mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, 1779 mega_product_info *product_info) 1780{ 1781 int i; 1782 1783 product_info->max_commands = inquiry->adapter_info.max_commands; 1784 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; 1785 product_info->nchannels = inquiry->adapter_info.nchannels; 1786 1787 for (i = 0; i < 4; i++) { 1788 product_info->fw_version[i] = 1789 inquiry->adapter_info.fw_version[i]; 1790 1791 product_info->bios_version[i] = 1792 inquiry->adapter_info.bios_version[i]; 1793 } 1794 enquiry3->cache_flush_interval = 1795 inquiry->adapter_info.cache_flush_interval; 1796 1797 product_info->dram_size = inquiry->adapter_info.dram_size; 1798 1799 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; 1800 1801 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { 1802 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; 1803 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; 1804 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; 1805 } 1806 1807 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) 1808 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; 1809} 1810 1811static inline void 1812mega_free_sgl(adapter_t *adapter) 1813{ 1814 scb_t *scb; 1815 int i; 1816 1817 for(i = 0; i < adapter->max_cmds; i++) { 1818 1819 scb = &adapter->scb_list[i]; 1820 1821 if( scb->sgl64 ) { 1822 dma_free_coherent(&adapter->dev->dev, 1823 sizeof(mega_sgl64) * adapter->sglen, 1824 scb->sgl64, scb->sgl_dma_addr); 1825 1826 scb->sgl64 = NULL; 1827 } 1828 1829 if( scb->pthru ) { 1830 dma_free_coherent(&adapter->dev->dev, 1831 sizeof(mega_passthru), scb->pthru, 1832 scb->pthru_dma_addr); 1833 1834 scb->pthru = NULL; 1835 } 1836 1837 if( scb->epthru ) { 1838 dma_free_coherent(&adapter->dev->dev, 1839 sizeof(mega_ext_passthru), 1840 scb->epthru, scb->epthru_dma_addr); 1841 1842 scb->epthru = NULL; 1843 } 1844 1845 } 1846} 1847 1848 1849/* 1850 * Get information about the card/driver 1851 */ 1852const char * 1853megaraid_info(struct Scsi_Host *host) 1854{ 1855 static char buffer[512]; 1856 adapter_t *adapter; 1857 1858 adapter = (adapter_t *)host->hostdata; 1859 1860 sprintf (buffer, 1861 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", 1862 adapter->fw_version, adapter->product_info.max_commands, 1863 adapter->host->max_id, adapter->host->max_channel, 1864 (u32)adapter->host->max_lun); 1865 return buffer; 1866} 1867 1868/* 1869 * Abort a previous SCSI request. Only commands on the pending list can be 1870 * aborted. All the commands issued to the F/W must complete. 1871 */ 1872static int 1873megaraid_abort(struct scsi_cmnd *cmd) 1874{ 1875 adapter_t *adapter; 1876 int rval; 1877 1878 adapter = (adapter_t *)cmd->device->host->hostdata; 1879 1880 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); 1881 1882 /* 1883 * This is required here to complete any completed requests 1884 * to be communicated over to the mid layer. 1885 */ 1886 mega_rundoneq(adapter); 1887 1888 return rval; 1889} 1890 1891 1892static int 1893megaraid_reset(struct scsi_cmnd *cmd) 1894{ 1895 adapter_t *adapter; 1896 megacmd_t mc; 1897 int rval; 1898 1899 adapter = (adapter_t *)cmd->device->host->hostdata; 1900 1901#if MEGA_HAVE_CLUSTERING 1902 mc.cmd = MEGA_CLUSTER_CMD; 1903 mc.opcode = MEGA_RESET_RESERVATIONS; 1904 1905 if( mega_internal_command(adapter, &mc, NULL) != 0 ) { 1906 dev_warn(&adapter->dev->dev, "reservation reset failed\n"); 1907 } 1908 else { 1909 dev_info(&adapter->dev->dev, "reservation reset\n"); 1910 } 1911#endif 1912 1913 spin_lock_irq(&adapter->lock); 1914 1915 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); 1916 1917 /* 1918 * This is required here to complete any completed requests 1919 * to be communicated over to the mid layer. 1920 */ 1921 mega_rundoneq(adapter); 1922 spin_unlock_irq(&adapter->lock); 1923 1924 return rval; 1925} 1926 1927/** 1928 * megaraid_abort_and_reset() 1929 * @adapter: megaraid soft state 1930 * @cmd: scsi command to be aborted or reset 1931 * @aor: abort or reset flag 1932 * 1933 * Try to locate the scsi command in the pending queue. If found and is not 1934 * issued to the controller, abort/reset it. Otherwise return failure 1935 */ 1936static int 1937megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor) 1938{ 1939 struct list_head *pos, *next; 1940 scb_t *scb; 1941 1942 dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n", 1943 (aor == SCB_ABORT)? "ABORTING":"RESET", 1944 cmd->cmnd[0], cmd->device->channel, 1945 cmd->device->id, (u32)cmd->device->lun); 1946 1947 if(list_empty(&adapter->pending_list)) 1948 return FAILED; 1949 1950 list_for_each_safe(pos, next, &adapter->pending_list) { 1951 1952 scb = list_entry(pos, scb_t, list); 1953 1954 if (scb->cmd == cmd) { /* Found command */ 1955 1956 scb->state |= aor; 1957 1958 /* 1959 * Check if this command has firmware ownership. If 1960 * yes, we cannot reset this command. Whenever f/w 1961 * completes this command, we will return appropriate 1962 * status from ISR. 1963 */ 1964 if( scb->state & SCB_ISSUED ) { 1965 1966 dev_warn(&adapter->dev->dev, 1967 "%s[%x], fw owner\n", 1968 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1969 scb->idx); 1970 1971 return FAILED; 1972 } 1973 else { 1974 1975 /* 1976 * Not yet issued! Remove from the pending 1977 * list 1978 */ 1979 dev_warn(&adapter->dev->dev, 1980 "%s-[%x], driver owner\n", 1981 (aor==SCB_ABORT) ? "ABORTING":"RESET", 1982 scb->idx); 1983 1984 mega_free_scb(adapter, scb); 1985 1986 if( aor == SCB_ABORT ) { 1987 cmd->result = (DID_ABORT << 16); 1988 } 1989 else { 1990 cmd->result = (DID_RESET << 16); 1991 } 1992 1993 list_add_tail(SCSI_LIST(cmd), 1994 &adapter->completed_list); 1995 1996 return SUCCESS; 1997 } 1998 } 1999 } 2000 2001 return FAILED; 2002} 2003 2004static inline int 2005make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) 2006{ 2007 *pdev = pci_alloc_dev(NULL); 2008 2009 if( *pdev == NULL ) return -1; 2010 2011 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); 2012 2013 if (dma_set_mask(&(*pdev)->dev, DMA_BIT_MASK(32)) != 0) { 2014 kfree(*pdev); 2015 return -1; 2016 } 2017 2018 return 0; 2019} 2020 2021static inline void 2022free_local_pdev(struct pci_dev *pdev) 2023{ 2024 kfree(pdev); 2025} 2026 2027/** 2028 * mega_allocate_inquiry() 2029 * @dma_handle: handle returned for dma address 2030 * @pdev: handle to pci device 2031 * 2032 * allocates memory for inquiry structure 2033 */ 2034static inline void * 2035mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) 2036{ 2037 return dma_alloc_coherent(&pdev->dev, sizeof(mega_inquiry3), 2038 dma_handle, GFP_KERNEL); 2039} 2040 2041 2042static inline void 2043mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) 2044{ 2045 dma_free_coherent(&pdev->dev, sizeof(mega_inquiry3), inquiry, 2046 dma_handle); 2047} 2048 2049 2050#ifdef CONFIG_PROC_FS 2051/* Following code handles /proc fs */ 2052 2053/** 2054 * proc_show_config() 2055 * @m: Synthetic file construction data 2056 * @v: File iterator 2057 * 2058 * Display configuration information about the controller. 2059 */ 2060static int 2061proc_show_config(struct seq_file *m, void *v) 2062{ 2063 2064 adapter_t *adapter = m->private; 2065 2066 seq_puts(m, MEGARAID_VERSION); 2067 if(adapter->product_info.product_name[0]) 2068 seq_printf(m, "%s\n", adapter->product_info.product_name); 2069 2070 seq_puts(m, "Controller Type: "); 2071 2072 if( adapter->flag & BOARD_MEMMAP ) 2073 seq_puts(m, "438/466/467/471/493/518/520/531/532\n"); 2074 else 2075 seq_puts(m, "418/428/434\n"); 2076 2077 if(adapter->flag & BOARD_40LD) 2078 seq_puts(m, "Controller Supports 40 Logical Drives\n"); 2079 2080 if(adapter->flag & BOARD_64BIT) 2081 seq_puts(m, "Controller capable of 64-bit memory addressing\n"); 2082 if( adapter->has_64bit_addr ) 2083 seq_puts(m, "Controller using 64-bit memory addressing\n"); 2084 else 2085 seq_puts(m, "Controller is not using 64-bit memory addressing\n"); 2086 2087 seq_printf(m, "Base = %08lx, Irq = %d, ", 2088 adapter->base, adapter->host->irq); 2089 2090 seq_printf(m, "Logical Drives = %d, Channels = %d\n", 2091 adapter->numldrv, adapter->product_info.nchannels); 2092 2093 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n", 2094 adapter->fw_version, adapter->bios_version, 2095 adapter->product_info.dram_size); 2096 2097 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", 2098 adapter->product_info.max_commands, adapter->max_cmds); 2099 2100 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb); 2101 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del); 2102 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); 2103 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv); 2104 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); 2105 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); 2106 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); 2107 seq_printf(m, "quiescent = %d\n", 2108 atomic_read(&adapter->quiescent)); 2109 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster); 2110 2111 seq_puts(m, "\nModule Parameters:\n"); 2112 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun); 2113 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io); 2114 return 0; 2115} 2116 2117/** 2118 * proc_show_stat() 2119 * @m: Synthetic file construction data 2120 * @v: File iterator 2121 * 2122 * Display statistical information about the I/O activity. 2123 */ 2124static int 2125proc_show_stat(struct seq_file *m, void *v) 2126{ 2127 adapter_t *adapter = m->private; 2128#if MEGA_HAVE_STATS 2129 int i; 2130#endif 2131 2132 seq_puts(m, "Statistical Information for this controller\n"); 2133 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); 2134#if MEGA_HAVE_STATS 2135 for(i = 0; i < adapter->numldrv; i++) { 2136 seq_printf(m, "Logical Drive %d:\n", i); 2137 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n", 2138 adapter->nreads[i], adapter->nwrites[i]); 2139 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n", 2140 adapter->nreadblocks[i], adapter->nwriteblocks[i]); 2141 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n", 2142 adapter->rd_errors[i], adapter->wr_errors[i]); 2143 } 2144#else 2145 seq_puts(m, "IO and error counters not compiled in driver.\n"); 2146#endif 2147 return 0; 2148} 2149 2150 2151/** 2152 * proc_show_mbox() 2153 * @m: Synthetic file construction data 2154 * @v: File iterator 2155 * 2156 * Display mailbox information for the last command issued. This information 2157 * is good for debugging. 2158 */ 2159static int 2160proc_show_mbox(struct seq_file *m, void *v) 2161{ 2162 adapter_t *adapter = m->private; 2163 volatile mbox_t *mbox = adapter->mbox; 2164 2165 seq_puts(m, "Contents of Mail Box Structure\n"); 2166 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd); 2167 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid); 2168 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors); 2169 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba); 2170 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr); 2171 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv); 2172 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements); 2173 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy); 2174 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status); 2175 return 0; 2176} 2177 2178 2179/** 2180 * proc_show_rebuild_rate() 2181 * @m: Synthetic file construction data 2182 * @v: File iterator 2183 * 2184 * Display current rebuild rate 2185 */ 2186static int 2187proc_show_rebuild_rate(struct seq_file *m, void *v) 2188{ 2189 adapter_t *adapter = m->private; 2190 dma_addr_t dma_handle; 2191 caddr_t inquiry; 2192 struct pci_dev *pdev; 2193 2194 if( make_local_pdev(adapter, &pdev) != 0 ) 2195 return 0; 2196 2197 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2198 goto free_pdev; 2199 2200 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2201 seq_puts(m, "Adapter inquiry failed.\n"); 2202 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2203 goto free_inquiry; 2204 } 2205 2206 if( adapter->flag & BOARD_40LD ) 2207 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2208 ((mega_inquiry3 *)inquiry)->rebuild_rate); 2209 else 2210 seq_printf(m, "Rebuild Rate: [%d%%]\n", 2211 ((mraid_ext_inquiry *) 2212 inquiry)->raid_inq.adapter_info.rebuild_rate); 2213 2214free_inquiry: 2215 mega_free_inquiry(inquiry, dma_handle, pdev); 2216free_pdev: 2217 free_local_pdev(pdev); 2218 return 0; 2219} 2220 2221 2222/** 2223 * proc_show_battery() 2224 * @m: Synthetic file construction data 2225 * @v: File iterator 2226 * 2227 * Display information about the battery module on the controller. 2228 */ 2229static int 2230proc_show_battery(struct seq_file *m, void *v) 2231{ 2232 adapter_t *adapter = m->private; 2233 dma_addr_t dma_handle; 2234 caddr_t inquiry; 2235 struct pci_dev *pdev; 2236 u8 battery_status; 2237 2238 if( make_local_pdev(adapter, &pdev) != 0 ) 2239 return 0; 2240 2241 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2242 goto free_pdev; 2243 2244 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2245 seq_puts(m, "Adapter inquiry failed.\n"); 2246 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2247 goto free_inquiry; 2248 } 2249 2250 if( adapter->flag & BOARD_40LD ) { 2251 battery_status = ((mega_inquiry3 *)inquiry)->battery_status; 2252 } 2253 else { 2254 battery_status = ((mraid_ext_inquiry *)inquiry)-> 2255 raid_inq.adapter_info.battery_status; 2256 } 2257 2258 /* 2259 * Decode the battery status 2260 */ 2261 seq_printf(m, "Battery Status:[%d]", battery_status); 2262 2263 if(battery_status == MEGA_BATT_CHARGE_DONE) 2264 seq_puts(m, " Charge Done"); 2265 2266 if(battery_status & MEGA_BATT_MODULE_MISSING) 2267 seq_puts(m, " Module Missing"); 2268 2269 if(battery_status & MEGA_BATT_LOW_VOLTAGE) 2270 seq_puts(m, " Low Voltage"); 2271 2272 if(battery_status & MEGA_BATT_TEMP_HIGH) 2273 seq_puts(m, " Temperature High"); 2274 2275 if(battery_status & MEGA_BATT_PACK_MISSING) 2276 seq_puts(m, " Pack Missing"); 2277 2278 if(battery_status & MEGA_BATT_CHARGE_INPROG) 2279 seq_puts(m, " Charge In-progress"); 2280 2281 if(battery_status & MEGA_BATT_CHARGE_FAIL) 2282 seq_puts(m, " Charge Fail"); 2283 2284 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) 2285 seq_puts(m, " Cycles Exceeded"); 2286 2287 seq_putc(m, '\n'); 2288 2289free_inquiry: 2290 mega_free_inquiry(inquiry, dma_handle, pdev); 2291free_pdev: 2292 free_local_pdev(pdev); 2293 return 0; 2294} 2295 2296 2297/* 2298 * Display scsi inquiry 2299 */ 2300static void 2301mega_print_inquiry(struct seq_file *m, char *scsi_inq) 2302{ 2303 int i; 2304 2305 seq_puts(m, " Vendor: "); 2306 seq_write(m, scsi_inq + 8, 8); 2307 seq_puts(m, " Model: "); 2308 seq_write(m, scsi_inq + 16, 16); 2309 seq_puts(m, " Rev: "); 2310 seq_write(m, scsi_inq + 32, 4); 2311 seq_putc(m, '\n'); 2312 2313 i = scsi_inq[0] & 0x1f; 2314 seq_printf(m, " Type: %s ", scsi_device_type(i)); 2315 2316 seq_printf(m, " ANSI SCSI revision: %02x", 2317 scsi_inq[2] & 0x07); 2318 2319 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) 2320 seq_puts(m, " CCS\n"); 2321 else 2322 seq_putc(m, '\n'); 2323} 2324 2325/** 2326 * proc_show_pdrv() 2327 * @m: Synthetic file construction data 2328 * @adapter: pointer to our soft state 2329 * @channel: channel 2330 * 2331 * Display information about the physical drives. 2332 */ 2333static int 2334proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel) 2335{ 2336 dma_addr_t dma_handle; 2337 char *scsi_inq; 2338 dma_addr_t scsi_inq_dma_handle; 2339 caddr_t inquiry; 2340 struct pci_dev *pdev; 2341 u8 *pdrv_state; 2342 u8 state; 2343 int tgt; 2344 int max_channels; 2345 int i; 2346 2347 if( make_local_pdev(adapter, &pdev) != 0 ) 2348 return 0; 2349 2350 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2351 goto free_pdev; 2352 2353 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2354 seq_puts(m, "Adapter inquiry failed.\n"); 2355 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2356 goto free_inquiry; 2357 } 2358 2359 2360 scsi_inq = dma_alloc_coherent(&pdev->dev, 256, &scsi_inq_dma_handle, 2361 GFP_KERNEL); 2362 if( scsi_inq == NULL ) { 2363 seq_puts(m, "memory not available for scsi inq.\n"); 2364 goto free_inquiry; 2365 } 2366 2367 if( adapter->flag & BOARD_40LD ) { 2368 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; 2369 } 2370 else { 2371 pdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2372 raid_inq.pdrv_info.pdrv_state; 2373 } 2374 2375 max_channels = adapter->product_info.nchannels; 2376 2377 if( channel >= max_channels ) { 2378 goto free_pci; 2379 } 2380 2381 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { 2382 2383 i = channel*16 + tgt; 2384 2385 state = *(pdrv_state + i); 2386 switch( state & 0x0F ) { 2387 case PDRV_ONLINE: 2388 seq_printf(m, "Channel:%2d Id:%2d State: Online", 2389 channel, tgt); 2390 break; 2391 2392 case PDRV_FAILED: 2393 seq_printf(m, "Channel:%2d Id:%2d State: Failed", 2394 channel, tgt); 2395 break; 2396 2397 case PDRV_RBLD: 2398 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild", 2399 channel, tgt); 2400 break; 2401 2402 case PDRV_HOTSPARE: 2403 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare", 2404 channel, tgt); 2405 break; 2406 2407 default: 2408 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured", 2409 channel, tgt); 2410 break; 2411 } 2412 2413 /* 2414 * This interface displays inquiries for disk drives 2415 * only. Inquries for logical drives and non-disk 2416 * devices are available through /proc/scsi/scsi 2417 */ 2418 memset(scsi_inq, 0, 256); 2419 if( mega_internal_dev_inquiry(adapter, channel, tgt, 2420 scsi_inq_dma_handle) || 2421 (scsi_inq[0] & 0x1F) != TYPE_DISK ) { 2422 continue; 2423 } 2424 2425 /* 2426 * Check for overflow. We print less than 240 2427 * characters for inquiry 2428 */ 2429 seq_puts(m, ".\n"); 2430 mega_print_inquiry(m, scsi_inq); 2431 } 2432 2433free_pci: 2434 dma_free_coherent(&pdev->dev, 256, scsi_inq, scsi_inq_dma_handle); 2435free_inquiry: 2436 mega_free_inquiry(inquiry, dma_handle, pdev); 2437free_pdev: 2438 free_local_pdev(pdev); 2439 return 0; 2440} 2441 2442/** 2443 * proc_show_pdrv_ch0() 2444 * @m: Synthetic file construction data 2445 * @v: File iterator 2446 * 2447 * Display information about the physical drives on physical channel 0. 2448 */ 2449static int 2450proc_show_pdrv_ch0(struct seq_file *m, void *v) 2451{ 2452 return proc_show_pdrv(m, m->private, 0); 2453} 2454 2455 2456/** 2457 * proc_show_pdrv_ch1() 2458 * @m: Synthetic file construction data 2459 * @v: File iterator 2460 * 2461 * Display information about the physical drives on physical channel 1. 2462 */ 2463static int 2464proc_show_pdrv_ch1(struct seq_file *m, void *v) 2465{ 2466 return proc_show_pdrv(m, m->private, 1); 2467} 2468 2469 2470/** 2471 * proc_show_pdrv_ch2() 2472 * @m: Synthetic file construction data 2473 * @v: File iterator 2474 * 2475 * Display information about the physical drives on physical channel 2. 2476 */ 2477static int 2478proc_show_pdrv_ch2(struct seq_file *m, void *v) 2479{ 2480 return proc_show_pdrv(m, m->private, 2); 2481} 2482 2483 2484/** 2485 * proc_show_pdrv_ch3() 2486 * @m: Synthetic file construction data 2487 * @v: File iterator 2488 * 2489 * Display information about the physical drives on physical channel 3. 2490 */ 2491static int 2492proc_show_pdrv_ch3(struct seq_file *m, void *v) 2493{ 2494 return proc_show_pdrv(m, m->private, 3); 2495} 2496 2497 2498/** 2499 * proc_show_rdrv() 2500 * @m: Synthetic file construction data 2501 * @adapter: pointer to our soft state 2502 * @start: starting logical drive to display 2503 * @end: ending logical drive to display 2504 * 2505 * We do not print the inquiry information since its already available through 2506 * /proc/scsi/scsi interface 2507 */ 2508static int 2509proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end ) 2510{ 2511 dma_addr_t dma_handle; 2512 logdrv_param *lparam; 2513 megacmd_t mc; 2514 char *disk_array; 2515 dma_addr_t disk_array_dma_handle; 2516 caddr_t inquiry; 2517 struct pci_dev *pdev; 2518 u8 *rdrv_state; 2519 int num_ldrv; 2520 u32 array_sz; 2521 int i; 2522 2523 if( make_local_pdev(adapter, &pdev) != 0 ) 2524 return 0; 2525 2526 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) 2527 goto free_pdev; 2528 2529 if( mega_adapinq(adapter, dma_handle) != 0 ) { 2530 seq_puts(m, "Adapter inquiry failed.\n"); 2531 dev_warn(&adapter->dev->dev, "inquiry failed\n"); 2532 goto free_inquiry; 2533 } 2534 2535 memset(&mc, 0, sizeof(megacmd_t)); 2536 2537 if( adapter->flag & BOARD_40LD ) { 2538 array_sz = sizeof(disk_array_40ld); 2539 2540 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; 2541 2542 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; 2543 } 2544 else { 2545 array_sz = sizeof(disk_array_8ld); 2546 2547 rdrv_state = ((mraid_ext_inquiry *)inquiry)-> 2548 raid_inq.logdrv_info.ldrv_state; 2549 2550 num_ldrv = ((mraid_ext_inquiry *)inquiry)-> 2551 raid_inq.logdrv_info.num_ldrv; 2552 } 2553 2554 disk_array = dma_alloc_coherent(&pdev->dev, array_sz, 2555 &disk_array_dma_handle, GFP_KERNEL); 2556 2557 if( disk_array == NULL ) { 2558 seq_puts(m, "memory not available.\n"); 2559 goto free_inquiry; 2560 } 2561 2562 mc.xferaddr = (u32)disk_array_dma_handle; 2563 2564 if( adapter->flag & BOARD_40LD ) { 2565 mc.cmd = FC_NEW_CONFIG; 2566 mc.opcode = OP_DCMD_READ_CONFIG; 2567 2568 if( mega_internal_command(adapter, &mc, NULL) ) { 2569 seq_puts(m, "40LD read config failed.\n"); 2570 goto free_pci; 2571 } 2572 2573 } 2574 else { 2575 mc.cmd = NEW_READ_CONFIG_8LD; 2576 2577 if( mega_internal_command(adapter, &mc, NULL) ) { 2578 mc.cmd = READ_CONFIG_8LD; 2579 if( mega_internal_command(adapter, &mc, NULL) ) { 2580 seq_puts(m, "8LD read config failed.\n"); 2581 goto free_pci; 2582 } 2583 } 2584 } 2585 2586 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { 2587 2588 if( adapter->flag & BOARD_40LD ) { 2589 lparam = 2590 &((disk_array_40ld *)disk_array)->ldrv[i].lparam; 2591 } 2592 else { 2593 lparam = 2594 &((disk_array_8ld *)disk_array)->ldrv[i].lparam; 2595 } 2596 2597 /* 2598 * Check for overflow. We print less than 240 characters for 2599 * information about each logical drive. 2600 */ 2601 seq_printf(m, "Logical drive:%2d:, ", i); 2602 2603 switch( rdrv_state[i] & 0x0F ) { 2604 case RDRV_OFFLINE: 2605 seq_puts(m, "state: offline"); 2606 break; 2607 case RDRV_DEGRADED: 2608 seq_puts(m, "state: degraded"); 2609 break; 2610 case RDRV_OPTIMAL: 2611 seq_puts(m, "state: optimal"); 2612 break; 2613 case RDRV_DELETED: 2614 seq_puts(m, "state: deleted"); 2615 break; 2616 default: 2617 seq_puts(m, "state: unknown"); 2618 break; 2619 } 2620 2621 /* 2622 * Check if check consistency or initialization is going on 2623 * for this logical drive. 2624 */ 2625 if( (rdrv_state[i] & 0xF0) == 0x20 ) 2626 seq_puts(m, ", check-consistency in progress"); 2627 else if( (rdrv_state[i] & 0xF0) == 0x10 ) 2628 seq_puts(m, ", initialization in progress"); 2629 2630 seq_putc(m, '\n'); 2631 2632 seq_printf(m, "Span depth:%3d, ", lparam->span_depth); 2633 seq_printf(m, "RAID level:%3d, ", lparam->level); 2634 seq_printf(m, "Stripe size:%3d, ", 2635 lparam->stripe_sz ? lparam->stripe_sz/2: 128); 2636 seq_printf(m, "Row size:%3d\n", lparam->row_size); 2637 2638 seq_puts(m, "Read Policy: "); 2639 switch(lparam->read_ahead) { 2640 case NO_READ_AHEAD: 2641 seq_puts(m, "No read ahead, "); 2642 break; 2643 case READ_AHEAD: 2644 seq_puts(m, "Read ahead, "); 2645 break; 2646 case ADAP_READ_AHEAD: 2647 seq_puts(m, "Adaptive, "); 2648 break; 2649 2650 } 2651 2652 seq_puts(m, "Write Policy: "); 2653 switch(lparam->write_mode) { 2654 case WRMODE_WRITE_THRU: 2655 seq_puts(m, "Write thru, "); 2656 break; 2657 case WRMODE_WRITE_BACK: 2658 seq_puts(m, "Write back, "); 2659 break; 2660 } 2661 2662 seq_puts(m, "Cache Policy: "); 2663 switch(lparam->direct_io) { 2664 case CACHED_IO: 2665 seq_puts(m, "Cached IO\n\n"); 2666 break; 2667 case DIRECT_IO: 2668 seq_puts(m, "Direct IO\n\n"); 2669 break; 2670 } 2671 } 2672 2673free_pci: 2674 dma_free_coherent(&pdev->dev, array_sz, disk_array, 2675 disk_array_dma_handle); 2676free_inquiry: 2677 mega_free_inquiry(inquiry, dma_handle, pdev); 2678free_pdev: 2679 free_local_pdev(pdev); 2680 return 0; 2681} 2682 2683/** 2684 * proc_show_rdrv_10() 2685 * @m: Synthetic file construction data 2686 * @v: File iterator 2687 * 2688 * Display real time information about the logical drives 0 through 9. 2689 */ 2690static int 2691proc_show_rdrv_10(struct seq_file *m, void *v) 2692{ 2693 return proc_show_rdrv(m, m->private, 0, 9); 2694} 2695 2696 2697/** 2698 * proc_show_rdrv_20() 2699 * @m: Synthetic file construction data 2700 * @v: File iterator 2701 * 2702 * Display real time information about the logical drives 0 through 9. 2703 */ 2704static int 2705proc_show_rdrv_20(struct seq_file *m, void *v) 2706{ 2707 return proc_show_rdrv(m, m->private, 10, 19); 2708} 2709 2710 2711/** 2712 * proc_show_rdrv_30() 2713 * @m: Synthetic file construction data 2714 * @v: File iterator 2715 * 2716 * Display real time information about the logical drives 0 through 9. 2717 */ 2718static int 2719proc_show_rdrv_30(struct seq_file *m, void *v) 2720{ 2721 return proc_show_rdrv(m, m->private, 20, 29); 2722} 2723 2724 2725/** 2726 * proc_show_rdrv_40() 2727 * @m: Synthetic file construction data 2728 * @v: File iterator 2729 * 2730 * Display real time information about the logical drives 0 through 9. 2731 */ 2732static int 2733proc_show_rdrv_40(struct seq_file *m, void *v) 2734{ 2735 return proc_show_rdrv(m, m->private, 30, 39); 2736} 2737 2738/** 2739 * mega_create_proc_entry() 2740 * @index: index in soft state array 2741 * @parent: parent node for this /proc entry 2742 * 2743 * Creates /proc entries for our controllers. 2744 */ 2745static void 2746mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2747{ 2748 adapter_t *adapter = hba_soft_state[index]; 2749 struct proc_dir_entry *dir; 2750 u8 string[16]; 2751 2752 sprintf(string, "hba%d", adapter->host->host_no); 2753 dir = proc_mkdir_data(string, 0, parent, adapter); 2754 if (!dir) { 2755 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n"); 2756 return; 2757 } 2758 2759 proc_create_single_data("config", S_IRUSR, dir, 2760 proc_show_config, adapter); 2761 proc_create_single_data("stat", S_IRUSR, dir, 2762 proc_show_stat, adapter); 2763 proc_create_single_data("mailbox", S_IRUSR, dir, 2764 proc_show_mbox, adapter); 2765#if MEGA_HAVE_ENH_PROC 2766 proc_create_single_data("rebuild-rate", S_IRUSR, dir, 2767 proc_show_rebuild_rate, adapter); 2768 proc_create_single_data("battery-status", S_IRUSR, dir, 2769 proc_show_battery, adapter); 2770 proc_create_single_data("diskdrives-ch0", S_IRUSR, dir, 2771 proc_show_pdrv_ch0, adapter); 2772 proc_create_single_data("diskdrives-ch1", S_IRUSR, dir, 2773 proc_show_pdrv_ch1, adapter); 2774 proc_create_single_data("diskdrives-ch2", S_IRUSR, dir, 2775 proc_show_pdrv_ch2, adapter); 2776 proc_create_single_data("diskdrives-ch3", S_IRUSR, dir, 2777 proc_show_pdrv_ch3, adapter); 2778 proc_create_single_data("raiddrives-0-9", S_IRUSR, dir, 2779 proc_show_rdrv_10, adapter); 2780 proc_create_single_data("raiddrives-10-19", S_IRUSR, dir, 2781 proc_show_rdrv_20, adapter); 2782 proc_create_single_data("raiddrives-20-29", S_IRUSR, dir, 2783 proc_show_rdrv_30, adapter); 2784 proc_create_single_data("raiddrives-30-39", S_IRUSR, dir, 2785 proc_show_rdrv_40, adapter); 2786#endif 2787} 2788 2789#else 2790static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) 2791{ 2792} 2793#endif 2794 2795 2796/* 2797 * megaraid_biosparam() 2798 * 2799 * Return the disk geometry for a particular disk 2800 */ 2801static int 2802megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, 2803 sector_t capacity, int geom[]) 2804{ 2805 adapter_t *adapter; 2806 int heads; 2807 int sectors; 2808 int cylinders; 2809 2810 /* Get pointer to host config structure */ 2811 adapter = (adapter_t *)sdev->host->hostdata; 2812 2813 if (IS_RAID_CH(adapter, sdev->channel)) { 2814 /* Default heads (64) & sectors (32) */ 2815 heads = 64; 2816 sectors = 32; 2817 cylinders = (ulong)capacity / (heads * sectors); 2818 2819 /* 2820 * Handle extended translation size for logical drives 2821 * > 1Gb 2822 */ 2823 if ((ulong)capacity >= 0x200000) { 2824 heads = 255; 2825 sectors = 63; 2826 cylinders = (ulong)capacity / (heads * sectors); 2827 } 2828 2829 /* return result */ 2830 geom[0] = heads; 2831 geom[1] = sectors; 2832 geom[2] = cylinders; 2833 } 2834 else { 2835 if (scsi_partsize(bdev, capacity, geom)) 2836 return 0; 2837 2838 dev_info(&adapter->dev->dev, 2839 "invalid partition on this disk on channel %d\n", 2840 sdev->channel); 2841 2842 /* Default heads (64) & sectors (32) */ 2843 heads = 64; 2844 sectors = 32; 2845 cylinders = (ulong)capacity / (heads * sectors); 2846 2847 /* Handle extended translation size for logical drives > 1Gb */ 2848 if ((ulong)capacity >= 0x200000) { 2849 heads = 255; 2850 sectors = 63; 2851 cylinders = (ulong)capacity / (heads * sectors); 2852 } 2853 2854 /* return result */ 2855 geom[0] = heads; 2856 geom[1] = sectors; 2857 geom[2] = cylinders; 2858 } 2859 2860 return 0; 2861} 2862 2863/** 2864 * mega_init_scb() 2865 * @adapter: pointer to our soft state 2866 * 2867 * Allocate memory for the various pointers in the scb structures: 2868 * scatter-gather list pointer, passthru and extended passthru structure 2869 * pointers. 2870 */ 2871static int 2872mega_init_scb(adapter_t *adapter) 2873{ 2874 scb_t *scb; 2875 int i; 2876 2877 for( i = 0; i < adapter->max_cmds; i++ ) { 2878 2879 scb = &adapter->scb_list[i]; 2880 2881 scb->sgl64 = NULL; 2882 scb->sgl = NULL; 2883 scb->pthru = NULL; 2884 scb->epthru = NULL; 2885 } 2886 2887 for( i = 0; i < adapter->max_cmds; i++ ) { 2888 2889 scb = &adapter->scb_list[i]; 2890 2891 scb->idx = i; 2892 2893 scb->sgl64 = dma_alloc_coherent(&adapter->dev->dev, 2894 sizeof(mega_sgl64) * adapter->sglen, 2895 &scb->sgl_dma_addr, GFP_KERNEL); 2896 2897 scb->sgl = (mega_sglist *)scb->sgl64; 2898 2899 if( !scb->sgl ) { 2900 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n"); 2901 mega_free_sgl(adapter); 2902 return -1; 2903 } 2904 2905 scb->pthru = dma_alloc_coherent(&adapter->dev->dev, 2906 sizeof(mega_passthru), 2907 &scb->pthru_dma_addr, GFP_KERNEL); 2908 2909 if( !scb->pthru ) { 2910 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n"); 2911 mega_free_sgl(adapter); 2912 return -1; 2913 } 2914 2915 scb->epthru = dma_alloc_coherent(&adapter->dev->dev, 2916 sizeof(mega_ext_passthru), 2917 &scb->epthru_dma_addr, GFP_KERNEL); 2918 2919 if( !scb->epthru ) { 2920 dev_warn(&adapter->dev->dev, 2921 "Can't allocate extended passthru\n"); 2922 mega_free_sgl(adapter); 2923 return -1; 2924 } 2925 2926 2927 scb->dma_type = MEGA_DMA_TYPE_NONE; 2928 2929 /* 2930 * Link to free list 2931 * lock not required since we are loading the driver, so no 2932 * commands possible right now. 2933 */ 2934 scb->state = SCB_FREE; 2935 scb->cmd = NULL; 2936 list_add(&scb->list, &adapter->free_list); 2937 } 2938 2939 return 0; 2940} 2941 2942 2943/** 2944 * megadev_open() 2945 * @inode: unused 2946 * @filep: unused 2947 * 2948 * Routines for the character/ioctl interface to the driver. Find out if this 2949 * is a valid open. 2950 */ 2951static int 2952megadev_open (struct inode *inode, struct file *filep) 2953{ 2954 /* 2955 * Only allow superuser to access private ioctl interface 2956 */ 2957 if( !capable(CAP_SYS_ADMIN) ) return -EACCES; 2958 2959 return 0; 2960} 2961 2962 2963/** 2964 * megadev_ioctl() 2965 * @filep: Our device file 2966 * @cmd: ioctl command 2967 * @arg: user buffer 2968 * 2969 * ioctl entry point for our private ioctl interface. We move the data in from 2970 * the user space, prepare the command (if necessary, convert the old MIMD 2971 * ioctl to new ioctl command), and issue a synchronous command to the 2972 * controller. 2973 */ 2974static int 2975megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 2976{ 2977 adapter_t *adapter; 2978 nitioctl_t uioc; 2979 int adapno; 2980 int rval; 2981 mega_passthru __user *upthru; /* user address for passthru */ 2982 mega_passthru *pthru; /* copy user passthru here */ 2983 dma_addr_t pthru_dma_hndl; 2984 void *data = NULL; /* data to be transferred */ 2985 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ 2986 megacmd_t mc; 2987#if MEGA_HAVE_STATS 2988 megastat_t __user *ustats = NULL; 2989 int num_ldrv = 0; 2990#endif 2991 u32 uxferaddr = 0; 2992 struct pci_dev *pdev; 2993 2994 /* 2995 * Make sure only USCSICMD are issued through this interface. 2996 * MIMD application would still fire different command. 2997 */ 2998 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { 2999 return -EINVAL; 3000 } 3001 3002 /* 3003 * Check and convert a possible MIMD command to NIT command. 3004 * mega_m_to_n() copies the data from the user space, so we do not 3005 * have to do it here. 3006 * NOTE: We will need some user address to copyout the data, therefore 3007 * the inteface layer will also provide us with the required user 3008 * addresses. 3009 */ 3010 memset(&uioc, 0, sizeof(nitioctl_t)); 3011 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) 3012 return rval; 3013 3014 3015 switch( uioc.opcode ) { 3016 3017 case GET_DRIVER_VER: 3018 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) 3019 return (-EFAULT); 3020 3021 break; 3022 3023 case GET_N_ADAP: 3024 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) 3025 return (-EFAULT); 3026 3027 /* 3028 * Shucks. MIMD interface returns a positive value for number 3029 * of adapters. TODO: Change it to return 0 when there is no 3030 * applicatio using mimd interface. 3031 */ 3032 return hba_count; 3033 3034 case GET_ADAP_INFO: 3035 3036 /* 3037 * Which adapter 3038 */ 3039 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3040 return (-ENODEV); 3041 3042 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, 3043 sizeof(struct mcontroller)) ) 3044 return (-EFAULT); 3045 break; 3046 3047#if MEGA_HAVE_STATS 3048 3049 case GET_STATS: 3050 /* 3051 * Which adapter 3052 */ 3053 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3054 return (-ENODEV); 3055 3056 adapter = hba_soft_state[adapno]; 3057 3058 ustats = uioc.uioc_uaddr; 3059 3060 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) 3061 return (-EFAULT); 3062 3063 /* 3064 * Check for the validity of the logical drive number 3065 */ 3066 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; 3067 3068 if( copy_to_user(ustats->nreads, adapter->nreads, 3069 num_ldrv*sizeof(u32)) ) 3070 return -EFAULT; 3071 3072 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, 3073 num_ldrv*sizeof(u32)) ) 3074 return -EFAULT; 3075 3076 if( copy_to_user(ustats->nwrites, adapter->nwrites, 3077 num_ldrv*sizeof(u32)) ) 3078 return -EFAULT; 3079 3080 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, 3081 num_ldrv*sizeof(u32)) ) 3082 return -EFAULT; 3083 3084 if( copy_to_user(ustats->rd_errors, adapter->rd_errors, 3085 num_ldrv*sizeof(u32)) ) 3086 return -EFAULT; 3087 3088 if( copy_to_user(ustats->wr_errors, adapter->wr_errors, 3089 num_ldrv*sizeof(u32)) ) 3090 return -EFAULT; 3091 3092 return 0; 3093 3094#endif 3095 case MBOX_CMD: 3096 3097 /* 3098 * Which adapter 3099 */ 3100 if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) 3101 return (-ENODEV); 3102 3103 adapter = hba_soft_state[adapno]; 3104 3105 /* 3106 * Deletion of logical drive is a special case. The adapter 3107 * should be quiescent before this command is issued. 3108 */ 3109 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && 3110 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { 3111 3112 /* 3113 * Do we support this feature 3114 */ 3115 if( !adapter->support_random_del ) { 3116 dev_warn(&adapter->dev->dev, "logdrv " 3117 "delete on non-supporting F/W\n"); 3118 3119 return (-EINVAL); 3120 } 3121 3122 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); 3123 3124 if( rval == 0 ) { 3125 memset(&mc, 0, sizeof(megacmd_t)); 3126 3127 mc.status = rval; 3128 3129 rval = mega_n_to_m((void __user *)arg, &mc); 3130 } 3131 3132 return rval; 3133 } 3134 /* 3135 * This interface only support the regular passthru commands. 3136 * Reject extended passthru and 64-bit passthru 3137 */ 3138 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || 3139 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { 3140 3141 dev_warn(&adapter->dev->dev, "rejected passthru\n"); 3142 3143 return (-EINVAL); 3144 } 3145 3146 /* 3147 * For all internal commands, the buffer must be allocated in 3148 * <4GB address range 3149 */ 3150 if( make_local_pdev(adapter, &pdev) != 0 ) 3151 return -EIO; 3152 3153 /* Is it a passthru command or a DCMD */ 3154 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { 3155 /* Passthru commands */ 3156 3157 pthru = dma_alloc_coherent(&pdev->dev, 3158 sizeof(mega_passthru), 3159 &pthru_dma_hndl, GFP_KERNEL); 3160 3161 if( pthru == NULL ) { 3162 free_local_pdev(pdev); 3163 return (-ENOMEM); 3164 } 3165 3166 /* 3167 * The user passthru structure 3168 */ 3169 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; 3170 3171 /* 3172 * Copy in the user passthru here. 3173 */ 3174 if( copy_from_user(pthru, upthru, 3175 sizeof(mega_passthru)) ) { 3176 3177 dma_free_coherent(&pdev->dev, 3178 sizeof(mega_passthru), 3179 pthru, pthru_dma_hndl); 3180 3181 free_local_pdev(pdev); 3182 3183 return (-EFAULT); 3184 } 3185 3186 /* 3187 * Is there a data transfer 3188 */ 3189 if( pthru->dataxferlen ) { 3190 data = dma_alloc_coherent(&pdev->dev, 3191 pthru->dataxferlen, 3192 &data_dma_hndl, 3193 GFP_KERNEL); 3194 3195 if( data == NULL ) { 3196 dma_free_coherent(&pdev->dev, 3197 sizeof(mega_passthru), 3198 pthru, 3199 pthru_dma_hndl); 3200 3201 free_local_pdev(pdev); 3202 3203 return (-ENOMEM); 3204 } 3205 3206 /* 3207 * Save the user address and point the kernel 3208 * address at just allocated memory 3209 */ 3210 uxferaddr = pthru->dataxferaddr; 3211 pthru->dataxferaddr = data_dma_hndl; 3212 } 3213 3214 3215 /* 3216 * Is data coming down-stream 3217 */ 3218 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { 3219 /* 3220 * Get the user data 3221 */ 3222 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3223 pthru->dataxferlen) ) { 3224 rval = (-EFAULT); 3225 goto freemem_and_return; 3226 } 3227 } 3228 3229 memset(&mc, 0, sizeof(megacmd_t)); 3230 3231 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 3232 mc.xferaddr = (u32)pthru_dma_hndl; 3233 3234 /* 3235 * Issue the command 3236 */ 3237 mega_internal_command(adapter, &mc, pthru); 3238 3239 rval = mega_n_to_m((void __user *)arg, &mc); 3240 3241 if( rval ) goto freemem_and_return; 3242 3243 3244 /* 3245 * Is data going up-stream 3246 */ 3247 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { 3248 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3249 pthru->dataxferlen) ) { 3250 rval = (-EFAULT); 3251 } 3252 } 3253 3254 /* 3255 * Send the request sense data also, irrespective of 3256 * whether the user has asked for it or not. 3257 */ 3258 if (copy_to_user(upthru->reqsensearea, 3259 pthru->reqsensearea, 14)) 3260 rval = -EFAULT; 3261 3262freemem_and_return: 3263 if( pthru->dataxferlen ) { 3264 dma_free_coherent(&pdev->dev, 3265 pthru->dataxferlen, data, 3266 data_dma_hndl); 3267 } 3268 3269 dma_free_coherent(&pdev->dev, sizeof(mega_passthru), 3270 pthru, pthru_dma_hndl); 3271 3272 free_local_pdev(pdev); 3273 3274 return rval; 3275 } 3276 else { 3277 /* DCMD commands */ 3278 3279 /* 3280 * Is there a data transfer 3281 */ 3282 if( uioc.xferlen ) { 3283 data = dma_alloc_coherent(&pdev->dev, 3284 uioc.xferlen, 3285 &data_dma_hndl, 3286 GFP_KERNEL); 3287 3288 if( data == NULL ) { 3289 free_local_pdev(pdev); 3290 return (-ENOMEM); 3291 } 3292 3293 uxferaddr = MBOX(uioc)->xferaddr; 3294 } 3295 3296 /* 3297 * Is data coming down-stream 3298 */ 3299 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { 3300 /* 3301 * Get the user data 3302 */ 3303 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, 3304 uioc.xferlen) ) { 3305 3306 dma_free_coherent(&pdev->dev, 3307 uioc.xferlen, data, 3308 data_dma_hndl); 3309 3310 free_local_pdev(pdev); 3311 3312 return (-EFAULT); 3313 } 3314 } 3315 3316 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); 3317 3318 mc.xferaddr = (u32)data_dma_hndl; 3319 3320 /* 3321 * Issue the command 3322 */ 3323 mega_internal_command(adapter, &mc, NULL); 3324 3325 rval = mega_n_to_m((void __user *)arg, &mc); 3326 3327 if( rval ) { 3328 if( uioc.xferlen ) { 3329 dma_free_coherent(&pdev->dev, 3330 uioc.xferlen, data, 3331 data_dma_hndl); 3332 } 3333 3334 free_local_pdev(pdev); 3335 3336 return rval; 3337 } 3338 3339 /* 3340 * Is data going up-stream 3341 */ 3342 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { 3343 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, 3344 uioc.xferlen) ) { 3345 3346 rval = (-EFAULT); 3347 } 3348 } 3349 3350 if( uioc.xferlen ) { 3351 dma_free_coherent(&pdev->dev, uioc.xferlen, 3352 data, data_dma_hndl); 3353 } 3354 3355 free_local_pdev(pdev); 3356 3357 return rval; 3358 } 3359 3360 default: 3361 return (-EINVAL); 3362 } 3363 3364 return 0; 3365} 3366 3367static long 3368megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 3369{ 3370 int ret; 3371 3372 mutex_lock(&megadev_mutex); 3373 ret = megadev_ioctl(filep, cmd, arg); 3374 mutex_unlock(&megadev_mutex); 3375 3376 return ret; 3377} 3378 3379/** 3380 * mega_m_to_n() 3381 * @arg: user address 3382 * @uioc: new ioctl structure 3383 * 3384 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl 3385 * structure 3386 * 3387 * Converts the older mimd ioctl structure to newer NIT structure 3388 */ 3389static int 3390mega_m_to_n(void __user *arg, nitioctl_t *uioc) 3391{ 3392 struct uioctl_t uioc_mimd; 3393 char signature[8] = {0}; 3394 u8 opcode; 3395 u8 subopcode; 3396 3397 3398 /* 3399 * check is the application conforms to NIT. We do not have to do much 3400 * in that case. 3401 * We exploit the fact that the signature is stored in the very 3402 * beginning of the structure. 3403 */ 3404 3405 if( copy_from_user(signature, arg, 7) ) 3406 return (-EFAULT); 3407 3408 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3409 3410 /* 3411 * NOTE NOTE: The nit ioctl is still under flux because of 3412 * change of mailbox definition, in HPE. No applications yet 3413 * use this interface and let's not have applications use this 3414 * interface till the new specifitions are in place. 3415 */ 3416 return -EINVAL; 3417#if 0 3418 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) 3419 return (-EFAULT); 3420 return 0; 3421#endif 3422 } 3423 3424 /* 3425 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t 3426 * 3427 * Get the user ioctl structure 3428 */ 3429 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) 3430 return (-EFAULT); 3431 3432 3433 /* 3434 * Get the opcode and subopcode for the commands 3435 */ 3436 opcode = uioc_mimd.ui.fcs.opcode; 3437 subopcode = uioc_mimd.ui.fcs.subopcode; 3438 3439 switch (opcode) { 3440 case 0x82: 3441 3442 switch (subopcode) { 3443 3444 case MEGAIOC_QDRVRVER: /* Query driver version */ 3445 uioc->opcode = GET_DRIVER_VER; 3446 uioc->uioc_uaddr = uioc_mimd.data; 3447 break; 3448 3449 case MEGAIOC_QNADAP: /* Get # of adapters */ 3450 uioc->opcode = GET_N_ADAP; 3451 uioc->uioc_uaddr = uioc_mimd.data; 3452 break; 3453 3454 case MEGAIOC_QADAPINFO: /* Get adapter information */ 3455 uioc->opcode = GET_ADAP_INFO; 3456 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3457 uioc->uioc_uaddr = uioc_mimd.data; 3458 break; 3459 3460 default: 3461 return(-EINVAL); 3462 } 3463 3464 break; 3465 3466 3467 case 0x81: 3468 3469 uioc->opcode = MBOX_CMD; 3470 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3471 3472 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3473 3474 uioc->xferlen = uioc_mimd.ui.fcs.length; 3475 3476 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3477 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3478 3479 break; 3480 3481 case 0x80: 3482 3483 uioc->opcode = MBOX_CMD; 3484 uioc->adapno = uioc_mimd.ui.fcs.adapno; 3485 3486 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); 3487 3488 /* 3489 * Choose the xferlen bigger of input and output data 3490 */ 3491 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? 3492 uioc_mimd.outlen : uioc_mimd.inlen; 3493 3494 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; 3495 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; 3496 3497 break; 3498 3499 default: 3500 return (-EINVAL); 3501 3502 } 3503 3504 return 0; 3505} 3506 3507/* 3508 * mega_n_to_m() 3509 * @arg: user address 3510 * @mc: mailbox command 3511 * 3512 * Updates the status information to the application, depending on application 3513 * conforms to older mimd ioctl interface or newer NIT ioctl interface 3514 */ 3515static int 3516mega_n_to_m(void __user *arg, megacmd_t *mc) 3517{ 3518 nitioctl_t __user *uiocp; 3519 megacmd_t __user *umc; 3520 mega_passthru __user *upthru; 3521 struct uioctl_t __user *uioc_mimd; 3522 char signature[8] = {0}; 3523 3524 /* 3525 * check is the application conforms to NIT. 3526 */ 3527 if( copy_from_user(signature, arg, 7) ) 3528 return -EFAULT; 3529 3530 if( memcmp(signature, "MEGANIT", 7) == 0 ) { 3531 3532 uiocp = arg; 3533 3534 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) 3535 return (-EFAULT); 3536 3537 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3538 3539 umc = MBOX_P(uiocp); 3540 3541 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3542 return -EFAULT; 3543 3544 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) 3545 return (-EFAULT); 3546 } 3547 } 3548 else { 3549 uioc_mimd = arg; 3550 3551 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) 3552 return (-EFAULT); 3553 3554 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { 3555 3556 umc = (megacmd_t __user *)uioc_mimd->mbox; 3557 3558 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) 3559 return (-EFAULT); 3560 3561 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) 3562 return (-EFAULT); 3563 } 3564 } 3565 3566 return 0; 3567} 3568 3569 3570/* 3571 * MEGARAID 'FW' commands. 3572 */ 3573 3574/** 3575 * mega_is_bios_enabled() 3576 * @adapter: pointer to our soft state 3577 * 3578 * issue command to find out if the BIOS is enabled for this controller 3579 */ 3580static int 3581mega_is_bios_enabled(adapter_t *adapter) 3582{ 3583 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3584 mbox_t *mbox; 3585 3586 mbox = (mbox_t *)raw_mbox; 3587 3588 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3589 3590 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3591 3592 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3593 3594 raw_mbox[0] = IS_BIOS_ENABLED; 3595 raw_mbox[2] = GET_BIOS; 3596 3597 issue_scb_block(adapter, raw_mbox); 3598 3599 return *(char *)adapter->mega_buffer; 3600} 3601 3602 3603/** 3604 * mega_enum_raid_scsi() 3605 * @adapter: pointer to our soft state 3606 * 3607 * Find out what channels are RAID/SCSI. This information is used to 3608 * differentiate the virtual channels and physical channels and to support 3609 * ROMB feature and non-disk devices. 3610 */ 3611static void 3612mega_enum_raid_scsi(adapter_t *adapter) 3613{ 3614 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3615 mbox_t *mbox; 3616 int i; 3617 3618 mbox = (mbox_t *)raw_mbox; 3619 3620 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3621 3622 /* 3623 * issue command to find out what channels are raid/scsi 3624 */ 3625 raw_mbox[0] = CHNL_CLASS; 3626 raw_mbox[2] = GET_CHNL_CLASS; 3627 3628 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3629 3630 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3631 3632 /* 3633 * Non-ROMB firmware fail this command, so all channels 3634 * must be shown RAID 3635 */ 3636 adapter->mega_ch_class = 0xFF; 3637 3638 if(!issue_scb_block(adapter, raw_mbox)) { 3639 adapter->mega_ch_class = *((char *)adapter->mega_buffer); 3640 3641 } 3642 3643 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3644 if( (adapter->mega_ch_class >> i) & 0x01 ) { 3645 dev_info(&adapter->dev->dev, "channel[%d] is raid\n", 3646 i); 3647 } 3648 else { 3649 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n", 3650 i); 3651 } 3652 } 3653 3654 return; 3655} 3656 3657 3658/** 3659 * mega_get_boot_drv() 3660 * @adapter: pointer to our soft state 3661 * 3662 * Find out which device is the boot device. Note, any logical drive or any 3663 * phyical device (e.g., a CDROM) can be designated as a boot device. 3664 */ 3665static void 3666mega_get_boot_drv(adapter_t *adapter) 3667{ 3668 struct private_bios_data *prv_bios_data; 3669 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3670 mbox_t *mbox; 3671 u16 cksum = 0; 3672 u8 *cksum_p; 3673 u8 boot_pdrv; 3674 int i; 3675 3676 mbox = (mbox_t *)raw_mbox; 3677 3678 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3679 3680 raw_mbox[0] = BIOS_PVT_DATA; 3681 raw_mbox[2] = GET_BIOS_PVT_DATA; 3682 3683 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3684 3685 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3686 3687 adapter->boot_ldrv_enabled = 0; 3688 adapter->boot_ldrv = 0; 3689 3690 adapter->boot_pdrv_enabled = 0; 3691 adapter->boot_pdrv_ch = 0; 3692 adapter->boot_pdrv_tgt = 0; 3693 3694 if(issue_scb_block(adapter, raw_mbox) == 0) { 3695 prv_bios_data = 3696 (struct private_bios_data *)adapter->mega_buffer; 3697 3698 cksum = 0; 3699 cksum_p = (char *)prv_bios_data; 3700 for (i = 0; i < 14; i++ ) { 3701 cksum += (u16)(*cksum_p++); 3702 } 3703 3704 if (prv_bios_data->cksum == (u16)(0-cksum) ) { 3705 3706 /* 3707 * If MSB is set, a physical drive is set as boot 3708 * device 3709 */ 3710 if( prv_bios_data->boot_drv & 0x80 ) { 3711 adapter->boot_pdrv_enabled = 1; 3712 boot_pdrv = prv_bios_data->boot_drv & 0x7F; 3713 adapter->boot_pdrv_ch = boot_pdrv / 16; 3714 adapter->boot_pdrv_tgt = boot_pdrv % 16; 3715 } 3716 else { 3717 adapter->boot_ldrv_enabled = 1; 3718 adapter->boot_ldrv = prv_bios_data->boot_drv; 3719 } 3720 } 3721 } 3722 3723} 3724 3725/** 3726 * mega_support_random_del() 3727 * @adapter: pointer to our soft state 3728 * 3729 * Find out if this controller supports random deletion and addition of 3730 * logical drives 3731 */ 3732static int 3733mega_support_random_del(adapter_t *adapter) 3734{ 3735 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3736 mbox_t *mbox; 3737 int rval; 3738 3739 mbox = (mbox_t *)raw_mbox; 3740 3741 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3742 3743 /* 3744 * issue command 3745 */ 3746 raw_mbox[0] = FC_DEL_LOGDRV; 3747 raw_mbox[2] = OP_SUP_DEL_LOGDRV; 3748 3749 rval = issue_scb_block(adapter, raw_mbox); 3750 3751 return !rval; 3752} 3753 3754 3755/** 3756 * mega_support_ext_cdb() 3757 * @adapter: pointer to our soft state 3758 * 3759 * Find out if this firmware support cdblen > 10 3760 */ 3761static int 3762mega_support_ext_cdb(adapter_t *adapter) 3763{ 3764 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3765 mbox_t *mbox; 3766 int rval; 3767 3768 mbox = (mbox_t *)raw_mbox; 3769 3770 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 3771 /* 3772 * issue command to find out if controller supports extended CDBs. 3773 */ 3774 raw_mbox[0] = 0xA4; 3775 raw_mbox[2] = 0x16; 3776 3777 rval = issue_scb_block(adapter, raw_mbox); 3778 3779 return !rval; 3780} 3781 3782 3783/** 3784 * mega_del_logdrv() 3785 * @adapter: pointer to our soft state 3786 * @logdrv: logical drive to be deleted 3787 * 3788 * Delete the specified logical drive. It is the responsibility of the user 3789 * app to let the OS know about this operation. 3790 */ 3791static int 3792mega_del_logdrv(adapter_t *adapter, int logdrv) 3793{ 3794 unsigned long flags; 3795 scb_t *scb; 3796 int rval; 3797 3798 /* 3799 * Stop sending commands to the controller, queue them internally. 3800 * When deletion is complete, ISR will flush the queue. 3801 */ 3802 atomic_set(&adapter->quiescent, 1); 3803 3804 /* 3805 * Wait till all the issued commands are complete and there are no 3806 * commands in the pending queue 3807 */ 3808 while (atomic_read(&adapter->pend_cmds) > 0 || 3809 !list_empty(&adapter->pending_list)) 3810 msleep(1000); /* sleep for 1s */ 3811 3812 rval = mega_do_del_logdrv(adapter, logdrv); 3813 3814 spin_lock_irqsave(&adapter->lock, flags); 3815 3816 /* 3817 * If delete operation was successful, add 0x80 to the logical drive 3818 * ids for commands in the pending queue. 3819 */ 3820 if (adapter->read_ldidmap) { 3821 struct list_head *pos; 3822 list_for_each(pos, &adapter->pending_list) { 3823 scb = list_entry(pos, scb_t, list); 3824 if (scb->pthru->logdrv < 0x80 ) 3825 scb->pthru->logdrv += 0x80; 3826 } 3827 } 3828 3829 atomic_set(&adapter->quiescent, 0); 3830 3831 mega_runpendq(adapter); 3832 3833 spin_unlock_irqrestore(&adapter->lock, flags); 3834 3835 return rval; 3836} 3837 3838 3839static int 3840mega_do_del_logdrv(adapter_t *adapter, int logdrv) 3841{ 3842 megacmd_t mc; 3843 int rval; 3844 3845 memset( &mc, 0, sizeof(megacmd_t)); 3846 3847 mc.cmd = FC_DEL_LOGDRV; 3848 mc.opcode = OP_DEL_LOGDRV; 3849 mc.subopcode = logdrv; 3850 3851 rval = mega_internal_command(adapter, &mc, NULL); 3852 3853 /* log this event */ 3854 if(rval) { 3855 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv); 3856 return rval; 3857 } 3858 3859 /* 3860 * After deleting first logical drive, the logical drives must be 3861 * addressed by adding 0x80 to the logical drive id. 3862 */ 3863 adapter->read_ldidmap = 1; 3864 3865 return rval; 3866} 3867 3868 3869/** 3870 * mega_get_max_sgl() 3871 * @adapter: pointer to our soft state 3872 * 3873 * Find out the maximum number of scatter-gather elements supported by this 3874 * version of the firmware 3875 */ 3876static void 3877mega_get_max_sgl(adapter_t *adapter) 3878{ 3879 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3880 mbox_t *mbox; 3881 3882 mbox = (mbox_t *)raw_mbox; 3883 3884 memset(mbox, 0, sizeof(raw_mbox)); 3885 3886 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3887 3888 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3889 3890 raw_mbox[0] = MAIN_MISC_OPCODE; 3891 raw_mbox[2] = GET_MAX_SG_SUPPORT; 3892 3893 3894 if( issue_scb_block(adapter, raw_mbox) ) { 3895 /* 3896 * f/w does not support this command. Choose the default value 3897 */ 3898 adapter->sglen = MIN_SGLIST; 3899 } 3900 else { 3901 adapter->sglen = *((char *)adapter->mega_buffer); 3902 3903 /* 3904 * Make sure this is not more than the resources we are 3905 * planning to allocate 3906 */ 3907 if ( adapter->sglen > MAX_SGLIST ) 3908 adapter->sglen = MAX_SGLIST; 3909 } 3910 3911 return; 3912} 3913 3914 3915/** 3916 * mega_support_cluster() 3917 * @adapter: pointer to our soft state 3918 * 3919 * Find out if this firmware support cluster calls. 3920 */ 3921static int 3922mega_support_cluster(adapter_t *adapter) 3923{ 3924 unsigned char raw_mbox[sizeof(struct mbox_out)]; 3925 mbox_t *mbox; 3926 3927 mbox = (mbox_t *)raw_mbox; 3928 3929 memset(mbox, 0, sizeof(raw_mbox)); 3930 3931 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); 3932 3933 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; 3934 3935 /* 3936 * Try to get the initiator id. This command will succeed iff the 3937 * clustering is available on this HBA. 3938 */ 3939 raw_mbox[0] = MEGA_GET_TARGET_ID; 3940 3941 if( issue_scb_block(adapter, raw_mbox) == 0 ) { 3942 3943 /* 3944 * Cluster support available. Get the initiator target id. 3945 * Tell our id to mid-layer too. 3946 */ 3947 adapter->this_id = *(u32 *)adapter->mega_buffer; 3948 adapter->host->this_id = adapter->this_id; 3949 3950 return 1; 3951 } 3952 3953 return 0; 3954} 3955 3956#ifdef CONFIG_PROC_FS 3957/** 3958 * mega_adapinq() 3959 * @adapter: pointer to our soft state 3960 * @dma_handle: DMA address of the buffer 3961 * 3962 * Issue internal commands while interrupts are available. 3963 * We only issue direct mailbox commands from within the driver. ioctl() 3964 * interface using these routines can issue passthru commands. 3965 */ 3966static int 3967mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) 3968{ 3969 megacmd_t mc; 3970 3971 memset(&mc, 0, sizeof(megacmd_t)); 3972 3973 if( adapter->flag & BOARD_40LD ) { 3974 mc.cmd = FC_NEW_CONFIG; 3975 mc.opcode = NC_SUBOP_ENQUIRY3; 3976 mc.subopcode = ENQ3_GET_SOLICITED_FULL; 3977 } 3978 else { 3979 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; 3980 } 3981 3982 mc.xferaddr = (u32)dma_handle; 3983 3984 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { 3985 return -1; 3986 } 3987 3988 return 0; 3989} 3990 3991 3992/** 3993 * mega_internal_dev_inquiry() 3994 * @adapter: pointer to our soft state 3995 * @ch: channel for this device 3996 * @tgt: ID of this device 3997 * @buf_dma_handle: DMA address of the buffer 3998 * 3999 * Issue the scsi inquiry for the specified device. 4000 */ 4001static int 4002mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, 4003 dma_addr_t buf_dma_handle) 4004{ 4005 mega_passthru *pthru; 4006 dma_addr_t pthru_dma_handle; 4007 megacmd_t mc; 4008 int rval; 4009 struct pci_dev *pdev; 4010 4011 4012 /* 4013 * For all internal commands, the buffer must be allocated in <4GB 4014 * address range 4015 */ 4016 if( make_local_pdev(adapter, &pdev) != 0 ) return -1; 4017 4018 pthru = dma_alloc_coherent(&pdev->dev, sizeof(mega_passthru), 4019 &pthru_dma_handle, GFP_KERNEL); 4020 4021 if( pthru == NULL ) { 4022 free_local_pdev(pdev); 4023 return -1; 4024 } 4025 4026 pthru->timeout = 2; 4027 pthru->ars = 1; 4028 pthru->reqsenselen = 14; 4029 pthru->islogical = 0; 4030 4031 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; 4032 4033 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; 4034 4035 pthru->cdblen = 6; 4036 4037 pthru->cdb[0] = INQUIRY; 4038 pthru->cdb[1] = 0; 4039 pthru->cdb[2] = 0; 4040 pthru->cdb[3] = 0; 4041 pthru->cdb[4] = 255; 4042 pthru->cdb[5] = 0; 4043 4044 4045 pthru->dataxferaddr = (u32)buf_dma_handle; 4046 pthru->dataxferlen = 256; 4047 4048 memset(&mc, 0, sizeof(megacmd_t)); 4049 4050 mc.cmd = MEGA_MBOXCMD_PASSTHRU; 4051 mc.xferaddr = (u32)pthru_dma_handle; 4052 4053 rval = mega_internal_command(adapter, &mc, pthru); 4054 4055 dma_free_coherent(&pdev->dev, sizeof(mega_passthru), pthru, 4056 pthru_dma_handle); 4057 4058 free_local_pdev(pdev); 4059 4060 return rval; 4061} 4062#endif 4063 4064/** 4065 * mega_internal_command() 4066 * @adapter: pointer to our soft state 4067 * @mc: the mailbox command 4068 * @pthru: Passthru structure for DCDB commands 4069 * 4070 * Issue the internal commands in interrupt mode. 4071 * The last argument is the address of the passthru structure if the command 4072 * to be fired is a passthru command 4073 * 4074 * Note: parameter 'pthru' is null for non-passthru commands. 4075 */ 4076static int 4077mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) 4078{ 4079 unsigned long flags; 4080 scb_t *scb; 4081 int rval; 4082 4083 /* 4084 * The internal commands share one command id and hence are 4085 * serialized. This is so because we want to reserve maximum number of 4086 * available command ids for the I/O commands. 4087 */ 4088 mutex_lock(&adapter->int_mtx); 4089 4090 scb = &adapter->int_scb; 4091 memset(scb, 0, sizeof(scb_t)); 4092 4093 scb->idx = CMDID_INT_CMDS; 4094 scb->state |= SCB_ACTIVE | SCB_PENDQ; 4095 4096 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); 4097 4098 /* 4099 * Is it a passthru command 4100 */ 4101 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU) 4102 scb->pthru = pthru; 4103 4104 spin_lock_irqsave(&adapter->lock, flags); 4105 list_add_tail(&scb->list, &adapter->pending_list); 4106 /* 4107 * Check if the HBA is in quiescent state, e.g., during a 4108 * delete logical drive opertion. If it is, don't run 4109 * the pending_list. 4110 */ 4111 if (atomic_read(&adapter->quiescent) == 0) 4112 mega_runpendq(adapter); 4113 spin_unlock_irqrestore(&adapter->lock, flags); 4114 4115 wait_for_completion(&adapter->int_waitq); 4116 4117 mc->status = rval = adapter->int_status; 4118 4119 /* 4120 * Print a debug message for all failed commands. Applications can use 4121 * this information. 4122 */ 4123 if (rval && trace_level) { 4124 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n", 4125 mc->cmd, mc->opcode, mc->subopcode, rval); 4126 } 4127 4128 mutex_unlock(&adapter->int_mtx); 4129 return rval; 4130} 4131 4132static struct scsi_host_template megaraid_template = { 4133 .module = THIS_MODULE, 4134 .name = "MegaRAID", 4135 .proc_name = "megaraid_legacy", 4136 .info = megaraid_info, 4137 .queuecommand = megaraid_queue, 4138 .bios_param = megaraid_biosparam, 4139 .max_sectors = MAX_SECTORS_PER_IO, 4140 .can_queue = MAX_COMMANDS, 4141 .this_id = DEFAULT_INITIATOR_ID, 4142 .sg_tablesize = MAX_SGLIST, 4143 .cmd_per_lun = DEF_CMD_PER_LUN, 4144 .eh_abort_handler = megaraid_abort, 4145 .eh_device_reset_handler = megaraid_reset, 4146 .eh_bus_reset_handler = megaraid_reset, 4147 .eh_host_reset_handler = megaraid_reset, 4148 .no_write_same = 1, 4149}; 4150 4151static int 4152megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 4153{ 4154 struct Scsi_Host *host; 4155 adapter_t *adapter; 4156 unsigned long mega_baseport, tbase, flag = 0; 4157 u16 subsysid, subsysvid; 4158 u8 pci_bus, pci_dev_func; 4159 int irq, i, j; 4160 int error = -ENODEV; 4161 4162 if (hba_count >= MAX_CONTROLLERS) 4163 goto out; 4164 4165 if (pci_enable_device(pdev)) 4166 goto out; 4167 pci_set_master(pdev); 4168 4169 pci_bus = pdev->bus->number; 4170 pci_dev_func = pdev->devfn; 4171 4172 /* 4173 * The megaraid3 stuff reports the ID of the Intel part which is not 4174 * remotely specific to the megaraid 4175 */ 4176 if (pdev->vendor == PCI_VENDOR_ID_INTEL) { 4177 u16 magic; 4178 /* 4179 * Don't fall over the Compaq management cards using the same 4180 * PCI identifier 4181 */ 4182 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && 4183 pdev->subsystem_device == 0xC000) 4184 goto out_disable_device; 4185 /* Now check the magic signature byte */ 4186 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); 4187 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) 4188 goto out_disable_device; 4189 /* Ok it is probably a megaraid */ 4190 } 4191 4192 /* 4193 * For these vendor and device ids, signature offsets are not 4194 * valid and 64 bit is implicit 4195 */ 4196 if (id->driver_data & BOARD_64BIT) 4197 flag |= BOARD_64BIT; 4198 else { 4199 u32 magic64; 4200 4201 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); 4202 if (magic64 == HBA_SIGNATURE_64BIT) 4203 flag |= BOARD_64BIT; 4204 } 4205 4206 subsysvid = pdev->subsystem_vendor; 4207 subsysid = pdev->subsystem_device; 4208 4209 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n", 4210 id->vendor, id->device); 4211 4212 /* Read the base port and IRQ from PCI */ 4213 mega_baseport = pci_resource_start(pdev, 0); 4214 irq = pdev->irq; 4215 4216 tbase = mega_baseport; 4217 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { 4218 flag |= BOARD_MEMMAP; 4219 4220 if (!request_mem_region(mega_baseport, 128, "megaraid")) { 4221 dev_warn(&pdev->dev, "mem region busy!\n"); 4222 goto out_disable_device; 4223 } 4224 4225 mega_baseport = (unsigned long)ioremap(mega_baseport, 128); 4226 if (!mega_baseport) { 4227 dev_warn(&pdev->dev, "could not map hba memory\n"); 4228 goto out_release_region; 4229 } 4230 } else { 4231 flag |= BOARD_IOMAP; 4232 mega_baseport += 0x10; 4233 4234 if (!request_region(mega_baseport, 16, "megaraid")) 4235 goto out_disable_device; 4236 } 4237 4238 /* Initialize SCSI Host structure */ 4239 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); 4240 if (!host) 4241 goto out_iounmap; 4242 4243 adapter = (adapter_t *)host->hostdata; 4244 memset(adapter, 0, sizeof(adapter_t)); 4245 4246 dev_notice(&pdev->dev, 4247 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", 4248 host->host_no, mega_baseport, irq); 4249 4250 adapter->base = mega_baseport; 4251 if (flag & BOARD_MEMMAP) 4252 adapter->mmio_base = (void __iomem *) mega_baseport; 4253 4254 INIT_LIST_HEAD(&adapter->free_list); 4255 INIT_LIST_HEAD(&adapter->pending_list); 4256 INIT_LIST_HEAD(&adapter->completed_list); 4257 4258 adapter->flag = flag; 4259 spin_lock_init(&adapter->lock); 4260 4261 host->cmd_per_lun = max_cmd_per_lun; 4262 host->max_sectors = max_sectors_per_io; 4263 4264 adapter->dev = pdev; 4265 adapter->host = host; 4266 4267 adapter->host->irq = irq; 4268 4269 if (flag & BOARD_MEMMAP) 4270 adapter->host->base = tbase; 4271 else { 4272 adapter->host->io_port = tbase; 4273 adapter->host->n_io_port = 16; 4274 } 4275 4276 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; 4277 4278 /* 4279 * Allocate buffer to issue internal commands. 4280 */ 4281 adapter->mega_buffer = dma_alloc_coherent(&adapter->dev->dev, 4282 MEGA_BUFFER_SIZE, 4283 &adapter->buf_dma_handle, 4284 GFP_KERNEL); 4285 if (!adapter->mega_buffer) { 4286 dev_warn(&pdev->dev, "out of RAM\n"); 4287 goto out_host_put; 4288 } 4289 4290 adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t), 4291 GFP_KERNEL); 4292 if (!adapter->scb_list) { 4293 dev_warn(&pdev->dev, "out of RAM\n"); 4294 goto out_free_cmd_buffer; 4295 } 4296 4297 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? 4298 megaraid_isr_memmapped : megaraid_isr_iomapped, 4299 IRQF_SHARED, "megaraid", adapter)) { 4300 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq); 4301 goto out_free_scb_list; 4302 } 4303 4304 if (mega_setup_mailbox(adapter)) 4305 goto out_free_irq; 4306 4307 if (mega_query_adapter(adapter)) 4308 goto out_free_mbox; 4309 4310 /* 4311 * Have checks for some buggy f/w 4312 */ 4313 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { 4314 /* 4315 * Which firmware 4316 */ 4317 if (!strcmp(adapter->fw_version, "3.00") || 4318 !strcmp(adapter->fw_version, "3.01")) { 4319 4320 dev_warn(&pdev->dev, 4321 "Your card is a Dell PERC " 4322 "2/SC RAID controller with " 4323 "firmware\nmegaraid: 3.00 or 3.01. " 4324 "This driver is known to have " 4325 "corruption issues\nmegaraid: with " 4326 "those firmware versions on this " 4327 "specific card. In order\nmegaraid: " 4328 "to protect your data, please upgrade " 4329 "your firmware to version\nmegaraid: " 4330 "3.10 or later, available from the " 4331 "Dell Technical Support web\n" 4332 "megaraid: site at\nhttp://support." 4333 "dell.com/us/en/filelib/download/" 4334 "index.asp?fileid=2940\n" 4335 ); 4336 } 4337 } 4338 4339 /* 4340 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with 4341 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit 4342 * support, since this firmware cannot handle 64 bit 4343 * addressing 4344 */ 4345 if ((subsysvid == PCI_VENDOR_ID_HP) && 4346 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { 4347 /* 4348 * which firmware 4349 */ 4350 if (!strcmp(adapter->fw_version, "H01.07") || 4351 !strcmp(adapter->fw_version, "H01.08") || 4352 !strcmp(adapter->fw_version, "H01.09") ) { 4353 dev_warn(&pdev->dev, 4354 "Firmware H.01.07, " 4355 "H.01.08, and H.01.09 on 1M/2M " 4356 "controllers\n" 4357 "do not support 64 bit " 4358 "addressing.\nDISABLING " 4359 "64 bit support.\n"); 4360 adapter->flag &= ~BOARD_64BIT; 4361 } 4362 } 4363 4364 if (mega_is_bios_enabled(adapter)) 4365 mega_hbas[hba_count].is_bios_enabled = 1; 4366 mega_hbas[hba_count].hostdata_addr = adapter; 4367 4368 /* 4369 * Find out which channel is raid and which is scsi. This is 4370 * for ROMB support. 4371 */ 4372 mega_enum_raid_scsi(adapter); 4373 4374 /* 4375 * Find out if a logical drive is set as the boot drive. If 4376 * there is one, will make that as the first logical drive. 4377 * ROMB: Do we have to boot from a physical drive. Then all 4378 * the physical drives would appear before the logical disks. 4379 * Else, all the physical drives would be exported to the mid 4380 * layer after logical drives. 4381 */ 4382 mega_get_boot_drv(adapter); 4383 4384 if (adapter->boot_pdrv_enabled) { 4385 j = adapter->product_info.nchannels; 4386 for( i = 0; i < j; i++ ) 4387 adapter->logdrv_chan[i] = 0; 4388 for( i = j; i < NVIRT_CHAN + j; i++ ) 4389 adapter->logdrv_chan[i] = 1; 4390 } else { 4391 for (i = 0; i < NVIRT_CHAN; i++) 4392 adapter->logdrv_chan[i] = 1; 4393 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) 4394 adapter->logdrv_chan[i] = 0; 4395 adapter->mega_ch_class <<= NVIRT_CHAN; 4396 } 4397 4398 /* 4399 * Do we support random deletion and addition of logical 4400 * drives 4401 */ 4402 adapter->read_ldidmap = 0; /* set it after first logdrv 4403 delete cmd */ 4404 adapter->support_random_del = mega_support_random_del(adapter); 4405 4406 /* Initialize SCBs */ 4407 if (mega_init_scb(adapter)) 4408 goto out_free_mbox; 4409 4410 /* 4411 * Reset the pending commands counter 4412 */ 4413 atomic_set(&adapter->pend_cmds, 0); 4414 4415 /* 4416 * Reset the adapter quiescent flag 4417 */ 4418 atomic_set(&adapter->quiescent, 0); 4419 4420 hba_soft_state[hba_count] = adapter; 4421 4422 /* 4423 * Fill in the structure which needs to be passed back to the 4424 * application when it does an ioctl() for controller related 4425 * information. 4426 */ 4427 i = hba_count; 4428 4429 mcontroller[i].base = mega_baseport; 4430 mcontroller[i].irq = irq; 4431 mcontroller[i].numldrv = adapter->numldrv; 4432 mcontroller[i].pcibus = pci_bus; 4433 mcontroller[i].pcidev = id->device; 4434 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); 4435 mcontroller[i].pciid = -1; 4436 mcontroller[i].pcivendor = id->vendor; 4437 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); 4438 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; 4439 4440 4441 /* Set the Mode of addressing to 64 bit if we can */ 4442 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { 4443 dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); 4444 adapter->has_64bit_addr = 1; 4445 } else { 4446 dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 4447 adapter->has_64bit_addr = 0; 4448 } 4449 4450 mutex_init(&adapter->int_mtx); 4451 init_completion(&adapter->int_waitq); 4452 4453 adapter->this_id = DEFAULT_INITIATOR_ID; 4454 adapter->host->this_id = DEFAULT_INITIATOR_ID; 4455 4456#if MEGA_HAVE_CLUSTERING 4457 /* 4458 * Is cluster support enabled on this controller 4459 * Note: In a cluster the HBAs ( the initiators ) will have 4460 * different target IDs and we cannot assume it to be 7. Call 4461 * to mega_support_cluster() will get the target ids also if 4462 * the cluster support is available 4463 */ 4464 adapter->has_cluster = mega_support_cluster(adapter); 4465 if (adapter->has_cluster) { 4466 dev_notice(&pdev->dev, 4467 "Cluster driver, initiator id:%d\n", 4468 adapter->this_id); 4469 } 4470#endif 4471 4472 pci_set_drvdata(pdev, host); 4473 4474 mega_create_proc_entry(hba_count, mega_proc_dir_entry); 4475 4476 error = scsi_add_host(host, &pdev->dev); 4477 if (error) 4478 goto out_free_mbox; 4479 4480 scsi_scan_host(host); 4481 hba_count++; 4482 return 0; 4483 4484 out_free_mbox: 4485 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t), 4486 adapter->una_mbox64, adapter->una_mbox64_dma); 4487 out_free_irq: 4488 free_irq(adapter->host->irq, adapter); 4489 out_free_scb_list: 4490 kfree(adapter->scb_list); 4491 out_free_cmd_buffer: 4492 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE, 4493 adapter->mega_buffer, adapter->buf_dma_handle); 4494 out_host_put: 4495 scsi_host_put(host); 4496 out_iounmap: 4497 if (flag & BOARD_MEMMAP) 4498 iounmap((void *)mega_baseport); 4499 out_release_region: 4500 if (flag & BOARD_MEMMAP) 4501 release_mem_region(tbase, 128); 4502 else 4503 release_region(mega_baseport, 16); 4504 out_disable_device: 4505 pci_disable_device(pdev); 4506 out: 4507 return error; 4508} 4509 4510static void 4511__megaraid_shutdown(adapter_t *adapter) 4512{ 4513 u_char raw_mbox[sizeof(struct mbox_out)]; 4514 mbox_t *mbox = (mbox_t *)raw_mbox; 4515 int i; 4516 4517 /* Flush adapter cache */ 4518 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4519 raw_mbox[0] = FLUSH_ADAPTER; 4520 4521 free_irq(adapter->host->irq, adapter); 4522 4523 /* Issue a blocking (interrupts disabled) command to the card */ 4524 issue_scb_block(adapter, raw_mbox); 4525 4526 /* Flush disks cache */ 4527 memset(&mbox->m_out, 0, sizeof(raw_mbox)); 4528 raw_mbox[0] = FLUSH_SYSTEM; 4529 4530 /* Issue a blocking (interrupts disabled) command to the card */ 4531 issue_scb_block(adapter, raw_mbox); 4532 4533 if (atomic_read(&adapter->pend_cmds) > 0) 4534 dev_warn(&adapter->dev->dev, "pending commands!!\n"); 4535 4536 /* 4537 * Have a delibrate delay to make sure all the caches are 4538 * actually flushed. 4539 */ 4540 for (i = 0; i <= 10; i++) 4541 mdelay(1000); 4542} 4543 4544static void 4545megaraid_remove_one(struct pci_dev *pdev) 4546{ 4547 struct Scsi_Host *host = pci_get_drvdata(pdev); 4548 adapter_t *adapter = (adapter_t *)host->hostdata; 4549 char buf[12] = { 0 }; 4550 4551 scsi_remove_host(host); 4552 4553 __megaraid_shutdown(adapter); 4554 4555 /* Free our resources */ 4556 if (adapter->flag & BOARD_MEMMAP) { 4557 iounmap((void *)adapter->base); 4558 release_mem_region(adapter->host->base, 128); 4559 } else 4560 release_region(adapter->base, 16); 4561 4562 mega_free_sgl(adapter); 4563 4564 sprintf(buf, "hba%d", adapter->host->host_no); 4565 remove_proc_subtree(buf, mega_proc_dir_entry); 4566 4567 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE, 4568 adapter->mega_buffer, adapter->buf_dma_handle); 4569 kfree(adapter->scb_list); 4570 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t), 4571 adapter->una_mbox64, adapter->una_mbox64_dma); 4572 4573 scsi_host_put(host); 4574 pci_disable_device(pdev); 4575 4576 hba_count--; 4577} 4578 4579static void 4580megaraid_shutdown(struct pci_dev *pdev) 4581{ 4582 struct Scsi_Host *host = pci_get_drvdata(pdev); 4583 adapter_t *adapter = (adapter_t *)host->hostdata; 4584 4585 __megaraid_shutdown(adapter); 4586} 4587 4588static struct pci_device_id megaraid_pci_tbl[] = { 4589 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 4590 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4591 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 4592 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4593 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, 4594 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 4595 {0,} 4596}; 4597MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); 4598 4599static struct pci_driver megaraid_pci_driver = { 4600 .name = "megaraid_legacy", 4601 .id_table = megaraid_pci_tbl, 4602 .probe = megaraid_probe_one, 4603 .remove = megaraid_remove_one, 4604 .shutdown = megaraid_shutdown, 4605}; 4606 4607static int __init megaraid_init(void) 4608{ 4609 int error; 4610 4611 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) 4612 max_cmd_per_lun = MAX_CMD_PER_LUN; 4613 if (max_mbox_busy_wait > MBOX_BUSY_WAIT) 4614 max_mbox_busy_wait = MBOX_BUSY_WAIT; 4615 4616#ifdef CONFIG_PROC_FS 4617 mega_proc_dir_entry = proc_mkdir("megaraid", NULL); 4618 if (!mega_proc_dir_entry) { 4619 printk(KERN_WARNING 4620 "megaraid: failed to create megaraid root\n"); 4621 } 4622#endif 4623 error = pci_register_driver(&megaraid_pci_driver); 4624 if (error) { 4625#ifdef CONFIG_PROC_FS 4626 remove_proc_entry("megaraid", NULL); 4627#endif 4628 return error; 4629 } 4630 4631 /* 4632 * Register the driver as a character device, for applications 4633 * to access it for ioctls. 4634 * First argument (major) to register_chrdev implies a dynamic 4635 * major number allocation. 4636 */ 4637 major = register_chrdev(0, "megadev_legacy", &megadev_fops); 4638 if (major < 0) { 4639 printk(KERN_WARNING 4640 "megaraid: failed to register char device\n"); 4641 } 4642 4643 return 0; 4644} 4645 4646static void __exit megaraid_exit(void) 4647{ 4648 /* 4649 * Unregister the character device interface to the driver. 4650 */ 4651 unregister_chrdev(major, "megadev_legacy"); 4652 4653 pci_unregister_driver(&megaraid_pci_driver); 4654 4655#ifdef CONFIG_PROC_FS 4656 remove_proc_entry("megaraid", NULL); 4657#endif 4658} 4659 4660module_init(megaraid_init); 4661module_exit(megaraid_exit); 4662 4663/* vi: set ts=8 sw=8 tw=78: */ 4664