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