ide.c revision 020e322de3ff75d32daa58e431aad07071da27c6
1/* 2 * linux/drivers/ide/ide.c Version 7.00beta2 Mar 05 2003 3 * 4 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) 5 */ 6 7/* 8 * Mostly written by Mark Lord <mlord@pobox.com> 9 * and Gadi Oxman <gadio@netvision.net.il> 10 * and Andre Hedrick <andre@linux-ide.org> 11 * 12 * See linux/MAINTAINERS for address of current maintainer. 13 * 14 * This is the multiple IDE interface driver, as evolved from hd.c. 15 * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs 16 * (usually 14 & 15). 17 * There can be up to two drives per interface, as per the ATA-2 spec. 18 * 19 * Primary: ide0, port 0x1f0; major=3; hda is minor=0; hdb is minor=64 20 * Secondary: ide1, port 0x170; major=22; hdc is minor=0; hdd is minor=64 21 * Tertiary: ide2, port 0x???; major=33; hde is minor=0; hdf is minor=64 22 * Quaternary: ide3, port 0x???; major=34; hdg is minor=0; hdh is minor=64 23 * ... 24 * 25 * From hd.c: 26 * | 27 * | It traverses the request-list, using interrupts to jump between functions. 28 * | As nearly all functions can be called within interrupts, we may not sleep. 29 * | Special care is recommended. Have Fun! 30 * | 31 * | modified by Drew Eckhardt to check nr of hd's from the CMOS. 32 * | 33 * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug 34 * | in the early extended-partition checks and added DM partitions. 35 * | 36 * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI). 37 * | 38 * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads", 39 * | and general streamlining by Mark Lord (mlord@pobox.com). 40 * 41 * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by: 42 * 43 * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg) 44 * Delman Lee (delman@ieee.org) ("Mr. atdisk2") 45 * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom) 46 * 47 * This was a rewrite of just about everything from hd.c, though some original 48 * code is still sprinkled about. Think of it as a major evolution, with 49 * inspiration from lots of linux users, esp. hamish@zot.apana.org.au 50 * 51 * Version 1.0 ALPHA initial code, primary i/f working okay 52 * Version 1.3 BETA dual i/f on shared irq tested & working! 53 * Version 1.4 BETA added auto probing for irq(s) 54 * Version 1.5 BETA added ALPHA (untested) support for IDE cd-roms, 55 * ... 56 * Version 5.50 allow values as small as 20 for idebus= 57 * Version 5.51 force non io_32bit in drive_cmd_intr() 58 * change delay_10ms() to delay_50ms() to fix problems 59 * Version 5.52 fix incorrect invalidation of removable devices 60 * add "hdx=slow" command line option 61 * Version 5.60 start to modularize the driver; the disk and ATAPI 62 * drivers can be compiled as loadable modules. 63 * move IDE probe code to ide-probe.c 64 * move IDE disk code to ide-disk.c 65 * add support for generic IDE device subdrivers 66 * add m68k code from Geert Uytterhoeven 67 * probe all interfaces by default 68 * add ioctl to (re)probe an interface 69 * Version 6.00 use per device request queues 70 * attempt to optimize shared hwgroup performance 71 * add ioctl to manually adjust bandwidth algorithms 72 * add kerneld support for the probe module 73 * fix bug in ide_error() 74 * fix bug in the first ide_get_lock() call for Atari 75 * don't flush leftover data for ATAPI devices 76 * Version 6.01 clear hwgroup->active while the hwgroup sleeps 77 * support HDIO_GETGEO for floppies 78 * Version 6.02 fix ide_ack_intr() call 79 * check partition table on floppies 80 * Version 6.03 handle bad status bit sequencing in ide_wait_stat() 81 * Version 6.10 deleted old entries from this list of updates 82 * replaced triton.c with ide-dma.c generic PCI DMA 83 * added support for BIOS-enabled UltraDMA 84 * rename all "promise" things to "pdc4030" 85 * fix EZ-DRIVE handling on small disks 86 * Version 6.11 fix probe error in ide_scan_devices() 87 * fix ancient "jiffies" polling bugs 88 * mask all hwgroup interrupts on each irq entry 89 * Version 6.12 integrate ioctl and proc interfaces 90 * fix parsing of "idex=" command line parameter 91 * Version 6.13 add support for ide4/ide5 courtesy rjones@orchestream.com 92 * Version 6.14 fixed IRQ sharing among PCI devices 93 * Version 6.15 added SMP awareness to IDE drivers 94 * Version 6.16 fixed various bugs; even more SMP friendly 95 * Version 6.17 fix for newest EZ-Drive problem 96 * Version 6.18 default unpartitioned-disk translation now "BIOS LBA" 97 * Version 6.19 Re-design for a UNIFORM driver for all platforms, 98 * model based on suggestions from Russell King and 99 * Geert Uytterhoeven 100 * Promise DC4030VL now supported. 101 * add support for ide6/ide7 102 * delay_50ms() changed to ide_delay_50ms() and exported. 103 * Version 6.20 Added/Fixed Generic ATA-66 support and hwif detection. 104 * Added hdx=flash to allow for second flash disk 105 * detection w/o the hang loop. 106 * Added support for ide8/ide9 107 * Added idex=ata66 for the quirky chipsets that are 108 * ATA-66 compliant, but have yet to determine a method 109 * of verification of the 80c cable presence. 110 * Specifically Promise's PDC20262 chipset. 111 * Version 6.21 Fixing/Fixed SMP spinlock issue with insight from an old 112 * hat that clarified original low level driver design. 113 * Version 6.30 Added SMP support; fixed multmode issues. -ml 114 * Version 6.31 Debug Share INTR's and request queue streaming 115 * Native ATA-100 support 116 * Prep for Cascades Project 117 * Version 7.00alpha First named revision of ide rearrange 118 * 119 * Some additional driver compile-time options are in ./include/linux/ide.h 120 * 121 * To do, in likely order of completion: 122 * - modify kernel to obtain BIOS geometry for drives on 2nd/3rd/4th i/f 123 * 124 */ 125 126#define REVISION "Revision: 7.00alpha2" 127#define VERSION "Id: ide.c 7.00a2 20020906" 128 129#undef REALLY_SLOW_IO /* most systems can safely undef this */ 130 131#define _IDE_C /* Tell ide.h it's really us */ 132 133#include <linux/module.h> 134#include <linux/types.h> 135#include <linux/string.h> 136#include <linux/kernel.h> 137#include <linux/timer.h> 138#include <linux/mm.h> 139#include <linux/interrupt.h> 140#include <linux/major.h> 141#include <linux/errno.h> 142#include <linux/genhd.h> 143#include <linux/blkpg.h> 144#include <linux/slab.h> 145#include <linux/init.h> 146#include <linux/pci.h> 147#include <linux/delay.h> 148#include <linux/ide.h> 149#include <linux/completion.h> 150#include <linux/reboot.h> 151#include <linux/cdrom.h> 152#include <linux/seq_file.h> 153#include <linux/device.h> 154#include <linux/bitops.h> 155 156#include <asm/byteorder.h> 157#include <asm/irq.h> 158#include <asm/uaccess.h> 159#include <asm/io.h> 160 161 162/* default maximum number of failures */ 163#define IDE_DEFAULT_MAX_FAILURES 1 164 165static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, 166 IDE2_MAJOR, IDE3_MAJOR, 167 IDE4_MAJOR, IDE5_MAJOR, 168 IDE6_MAJOR, IDE7_MAJOR, 169 IDE8_MAJOR, IDE9_MAJOR }; 170 171static int idebus_parameter; /* holds the "idebus=" parameter */ 172static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */ 173static int initializing; /* set while initializing built-in drivers */ 174 175DECLARE_MUTEX(ide_cfg_sem); 176 __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); 177 178#ifdef CONFIG_BLK_DEV_IDEPCI 179static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */ 180#endif 181 182#ifdef CONFIG_IDEDMA_AUTO 183int noautodma = 0; 184#else 185int noautodma = 1; 186#endif 187 188EXPORT_SYMBOL(noautodma); 189 190/* 191 * This is declared extern in ide.h, for access by other IDE modules: 192 */ 193ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ 194 195EXPORT_SYMBOL(ide_hwifs); 196 197/* 198 * Do not even *think* about calling this! 199 */ 200static void init_hwif_data(ide_hwif_t *hwif, unsigned int index) 201{ 202 unsigned int unit; 203 204 /* bulk initialize hwif & drive info with zeros */ 205 memset(hwif, 0, sizeof(ide_hwif_t)); 206 207 /* fill in any non-zero initial values */ 208 hwif->index = index; 209 hwif->major = ide_hwif_to_major[index]; 210 211 hwif->name[0] = 'i'; 212 hwif->name[1] = 'd'; 213 hwif->name[2] = 'e'; 214 hwif->name[3] = '0' + index; 215 216 hwif->bus_state = BUSSTATE_ON; 217 218 hwif->atapi_dma = 0; /* disable all atapi dma */ 219 hwif->ultra_mask = 0x80; /* disable all ultra */ 220 hwif->mwdma_mask = 0x80; /* disable all mwdma */ 221 hwif->swdma_mask = 0x80; /* disable all swdma */ 222 223 init_completion(&hwif->gendev_rel_comp); 224 225 default_hwif_iops(hwif); 226 default_hwif_transport(hwif); 227 for (unit = 0; unit < MAX_DRIVES; ++unit) { 228 ide_drive_t *drive = &hwif->drives[unit]; 229 230 drive->media = ide_disk; 231 drive->select.all = (unit<<4)|0xa0; 232 drive->hwif = hwif; 233 drive->ctl = 0x08; 234 drive->ready_stat = READY_STAT; 235 drive->bad_wstat = BAD_W_STAT; 236 drive->special.b.recalibrate = 1; 237 drive->special.b.set_geometry = 1; 238 drive->name[0] = 'h'; 239 drive->name[1] = 'd'; 240 drive->name[2] = 'a' + (index * MAX_DRIVES) + unit; 241 drive->max_failures = IDE_DEFAULT_MAX_FAILURES; 242 drive->using_dma = 0; 243 drive->vdma = 0; 244 INIT_LIST_HEAD(&drive->list); 245 init_completion(&drive->gendev_rel_comp); 246 } 247} 248 249static void init_hwif_default(ide_hwif_t *hwif, unsigned int index) 250{ 251 hw_regs_t hw; 252 253 memset(&hw, 0, sizeof(hw_regs_t)); 254 255 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq); 256 257 memcpy(&hwif->hw, &hw, sizeof(hw)); 258 memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports)); 259 260 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; 261#ifdef CONFIG_BLK_DEV_HD 262 if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA) 263 hwif->noprobe = 1; /* may be overridden by ide_setup() */ 264#endif 265} 266 267extern void ide_arm_init(void); 268 269/* 270 * init_ide_data() sets reasonable default values into all fields 271 * of all instances of the hwifs and drives, but only on the first call. 272 * Subsequent calls have no effect (they don't wipe out anything). 273 * 274 * This routine is normally called at driver initialization time, 275 * but may also be called MUCH earlier during kernel "command-line" 276 * parameter processing. As such, we cannot depend on any other parts 277 * of the kernel (such as memory allocation) to be functioning yet. 278 * 279 * This is too bad, as otherwise we could dynamically allocate the 280 * ide_drive_t structs as needed, rather than always consuming memory 281 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. 282 * 283 * FIXME: We should stuff the setup data into __init and copy the 284 * relevant hwifs/allocate them properly during boot. 285 */ 286#define MAGIC_COOKIE 0x12345678 287static void __init init_ide_data (void) 288{ 289 ide_hwif_t *hwif; 290 unsigned int index; 291 static unsigned long magic_cookie = MAGIC_COOKIE; 292 293 if (magic_cookie != MAGIC_COOKIE) 294 return; /* already initialized */ 295 magic_cookie = 0; 296 297 /* Initialise all interface structures */ 298 for (index = 0; index < MAX_HWIFS; ++index) { 299 hwif = &ide_hwifs[index]; 300 init_hwif_data(hwif, index); 301 init_hwif_default(hwif, index); 302#if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI) 303 hwif->irq = hwif->hw.irq = 304 ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); 305#endif 306 } 307#ifdef CONFIG_IDE_ARM 308 initializing = 1; 309 ide_arm_init(); 310 initializing = 0; 311#endif 312} 313 314/** 315 * ide_system_bus_speed - guess bus speed 316 * 317 * ide_system_bus_speed() returns what we think is the system VESA/PCI 318 * bus speed (in MHz). This is used for calculating interface PIO timings. 319 * The default is 40 for known PCI systems, 50 otherwise. 320 * The "idebus=xx" parameter can be used to override this value. 321 * The actual value to be used is computed/displayed the first time 322 * through. Drivers should only use this as a last resort. 323 * 324 * Returns a guessed speed in MHz. 325 */ 326 327static int ide_system_bus_speed(void) 328{ 329#ifdef CONFIG_PCI 330 static struct pci_device_id pci_default[] = { 331 { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, 332 { } 333 }; 334#else 335#define pci_default 0 336#endif /* CONFIG_PCI */ 337 338 if (!system_bus_speed) { 339 if (idebus_parameter) { 340 /* user supplied value */ 341 system_bus_speed = idebus_parameter; 342 } else if (pci_dev_present(pci_default)) { 343 /* safe default value for PCI */ 344 system_bus_speed = 33; 345 } else { 346 /* safe default value for VESA and PCI */ 347 system_bus_speed = 50; 348 } 349 printk(KERN_INFO "ide: Assuming %dMHz system bus speed " 350 "for PIO modes%s\n", system_bus_speed, 351 idebus_parameter ? "" : "; override with idebus=xx"); 352 } 353 return system_bus_speed; 354} 355 356#ifdef CONFIG_PROC_FS 357struct proc_dir_entry *proc_ide_root; 358#endif 359 360static struct resource* hwif_request_region(ide_hwif_t *hwif, 361 unsigned long addr, int num) 362{ 363 struct resource *res = request_region(addr, num, hwif->name); 364 365 if (!res) 366 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", 367 hwif->name, addr, addr+num-1); 368 return res; 369} 370 371/** 372 * ide_hwif_request_regions - request resources for IDE 373 * @hwif: interface to use 374 * 375 * Requests all the needed resources for an interface. 376 * Right now core IDE code does this work which is deeply wrong. 377 * MMIO leaves it to the controller driver, 378 * PIO will migrate this way over time. 379 */ 380 381int ide_hwif_request_regions(ide_hwif_t *hwif) 382{ 383 unsigned long addr; 384 unsigned int i; 385 386 if (hwif->mmio == 2) 387 return 0; 388 BUG_ON(hwif->mmio == 1); 389 addr = hwif->io_ports[IDE_CONTROL_OFFSET]; 390 if (addr && !hwif_request_region(hwif, addr, 1)) 391 goto control_region_busy; 392 hwif->straight8 = 0; 393 addr = hwif->io_ports[IDE_DATA_OFFSET]; 394 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { 395 if (!hwif_request_region(hwif, addr, 8)) 396 goto data_region_busy; 397 hwif->straight8 = 1; 398 return 0; 399 } 400 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { 401 addr = hwif->io_ports[i]; 402 if (!hwif_request_region(hwif, addr, 1)) { 403 while (--i) 404 release_region(addr, 1); 405 goto data_region_busy; 406 } 407 } 408 return 0; 409 410data_region_busy: 411 addr = hwif->io_ports[IDE_CONTROL_OFFSET]; 412 if (addr) 413 release_region(addr, 1); 414control_region_busy: 415 /* If any errors are return, we drop the hwif interface. */ 416 return -EBUSY; 417} 418 419/** 420 * ide_hwif_release_regions - free IDE resources 421 * 422 * Note that we only release the standard ports, 423 * and do not even try to handle any extra ports 424 * allocated for weird IDE interface chipsets. 425 * 426 * Note also that we don't yet handle mmio resources here. More 427 * importantly our caller should be doing this so we need to 428 * restructure this as a helper function for drivers. 429 */ 430 431void ide_hwif_release_regions(ide_hwif_t *hwif) 432{ 433 u32 i = 0; 434 435 if (hwif->mmio == 2) 436 return; 437 if (hwif->io_ports[IDE_CONTROL_OFFSET]) 438 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); 439 if (hwif->straight8) { 440 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); 441 return; 442 } 443 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) 444 if (hwif->io_ports[i]) 445 release_region(hwif->io_ports[i], 1); 446} 447 448/** 449 * ide_hwif_restore - restore hwif to template 450 * @hwif: hwif to update 451 * @tmp_hwif: template 452 * 453 * Restore hwif to a previous state by copying most settings 454 * from the template. 455 */ 456 457static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) 458{ 459 hwif->hwgroup = tmp_hwif->hwgroup; 460 461 hwif->gendev.parent = tmp_hwif->gendev.parent; 462 463 hwif->proc = tmp_hwif->proc; 464 465 hwif->major = tmp_hwif->major; 466 hwif->straight8 = tmp_hwif->straight8; 467 hwif->bus_state = tmp_hwif->bus_state; 468 469 hwif->atapi_dma = tmp_hwif->atapi_dma; 470 hwif->ultra_mask = tmp_hwif->ultra_mask; 471 hwif->mwdma_mask = tmp_hwif->mwdma_mask; 472 hwif->swdma_mask = tmp_hwif->swdma_mask; 473 474 hwif->chipset = tmp_hwif->chipset; 475 hwif->hold = tmp_hwif->hold; 476 477#ifdef CONFIG_BLK_DEV_IDEPCI 478 hwif->pci_dev = tmp_hwif->pci_dev; 479 hwif->cds = tmp_hwif->cds; 480#endif 481 482 hwif->tuneproc = tmp_hwif->tuneproc; 483 hwif->speedproc = tmp_hwif->speedproc; 484 hwif->selectproc = tmp_hwif->selectproc; 485 hwif->reset_poll = tmp_hwif->reset_poll; 486 hwif->pre_reset = tmp_hwif->pre_reset; 487 hwif->resetproc = tmp_hwif->resetproc; 488 hwif->intrproc = tmp_hwif->intrproc; 489 hwif->maskproc = tmp_hwif->maskproc; 490 hwif->quirkproc = tmp_hwif->quirkproc; 491 hwif->busproc = tmp_hwif->busproc; 492 493 hwif->ata_input_data = tmp_hwif->ata_input_data; 494 hwif->ata_output_data = tmp_hwif->ata_output_data; 495 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes; 496 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes; 497 498 hwif->dma_setup = tmp_hwif->dma_setup; 499 hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd; 500 hwif->dma_start = tmp_hwif->dma_start; 501 hwif->ide_dma_end = tmp_hwif->ide_dma_end; 502 hwif->ide_dma_check = tmp_hwif->ide_dma_check; 503 hwif->ide_dma_on = tmp_hwif->ide_dma_on; 504 hwif->ide_dma_off_quietly = tmp_hwif->ide_dma_off_quietly; 505 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq; 506 hwif->ide_dma_host_on = tmp_hwif->ide_dma_host_on; 507 hwif->ide_dma_host_off = tmp_hwif->ide_dma_host_off; 508 hwif->ide_dma_lostirq = tmp_hwif->ide_dma_lostirq; 509 hwif->ide_dma_timeout = tmp_hwif->ide_dma_timeout; 510 511 hwif->OUTB = tmp_hwif->OUTB; 512 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC; 513 hwif->OUTW = tmp_hwif->OUTW; 514 hwif->OUTL = tmp_hwif->OUTL; 515 hwif->OUTSW = tmp_hwif->OUTSW; 516 hwif->OUTSL = tmp_hwif->OUTSL; 517 518 hwif->INB = tmp_hwif->INB; 519 hwif->INW = tmp_hwif->INW; 520 hwif->INL = tmp_hwif->INL; 521 hwif->INSW = tmp_hwif->INSW; 522 hwif->INSL = tmp_hwif->INSL; 523 524 hwif->sg_max_nents = tmp_hwif->sg_max_nents; 525 526 hwif->mmio = tmp_hwif->mmio; 527 hwif->rqsize = tmp_hwif->rqsize; 528 hwif->no_lba48 = tmp_hwif->no_lba48; 529 530#ifndef CONFIG_BLK_DEV_IDECS 531 hwif->irq = tmp_hwif->irq; 532#endif 533 534 hwif->dma_base = tmp_hwif->dma_base; 535 hwif->dma_master = tmp_hwif->dma_master; 536 hwif->dma_command = tmp_hwif->dma_command; 537 hwif->dma_vendor1 = tmp_hwif->dma_vendor1; 538 hwif->dma_status = tmp_hwif->dma_status; 539 hwif->dma_vendor3 = tmp_hwif->dma_vendor3; 540 hwif->dma_prdtable = tmp_hwif->dma_prdtable; 541 542 hwif->config_data = tmp_hwif->config_data; 543 hwif->select_data = tmp_hwif->select_data; 544 hwif->extra_base = tmp_hwif->extra_base; 545 hwif->extra_ports = tmp_hwif->extra_ports; 546 hwif->autodma = tmp_hwif->autodma; 547 hwif->udma_four = tmp_hwif->udma_four; 548 hwif->no_dsc = tmp_hwif->no_dsc; 549 550 hwif->hwif_data = tmp_hwif->hwif_data; 551} 552 553/** 554 * ide_unregister - free an IDE interface 555 * @index: index of interface (will change soon to a pointer) 556 * 557 * Perform the final unregister of an IDE interface. At the moment 558 * we don't refcount interfaces so this will also get split up. 559 * 560 * Locking: 561 * The caller must not hold the IDE locks 562 * The drive present/vanishing is not yet properly locked 563 * Take care with the callbacks. These have been split to avoid 564 * deadlocking the IDE layer. The shutdown callback is called 565 * before we take the lock and free resources. It is up to the 566 * caller to be sure there is no pending I/O here, and that 567 * the interface will not be reopened (present/vanishing locking 568 * isn't yet done BTW). After we commit to the final kill we 569 * call the cleanup callback with the ide locks held. 570 * 571 * Unregister restores the hwif structures to the default state. 572 * This is raving bonkers. 573 */ 574 575void ide_unregister(unsigned int index) 576{ 577 ide_drive_t *drive; 578 ide_hwif_t *hwif, *g; 579 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_sem */ 580 ide_hwgroup_t *hwgroup; 581 int irq_count = 0, unit; 582 583 BUG_ON(index >= MAX_HWIFS); 584 585 BUG_ON(in_interrupt()); 586 BUG_ON(irqs_disabled()); 587 down(&ide_cfg_sem); 588 spin_lock_irq(&ide_lock); 589 hwif = &ide_hwifs[index]; 590 if (!hwif->present) 591 goto abort; 592 for (unit = 0; unit < MAX_DRIVES; ++unit) { 593 drive = &hwif->drives[unit]; 594 if (!drive->present) 595 continue; 596 spin_unlock_irq(&ide_lock); 597 device_unregister(&drive->gendev); 598 wait_for_completion(&drive->gendev_rel_comp); 599 spin_lock_irq(&ide_lock); 600 } 601 hwif->present = 0; 602 603 spin_unlock_irq(&ide_lock); 604 605 destroy_proc_ide_interface(hwif); 606 607 hwgroup = hwif->hwgroup; 608 /* 609 * free the irq if we were the only hwif using it 610 */ 611 g = hwgroup->hwif; 612 do { 613 if (g->irq == hwif->irq) 614 ++irq_count; 615 g = g->next; 616 } while (g != hwgroup->hwif); 617 if (irq_count == 1) 618 free_irq(hwif->irq, hwgroup); 619 620 spin_lock_irq(&ide_lock); 621 /* 622 * Note that we only release the standard ports, 623 * and do not even try to handle any extra ports 624 * allocated for weird IDE interface chipsets. 625 */ 626 ide_hwif_release_regions(hwif); 627 628 /* 629 * Remove us from the hwgroup, and free 630 * the hwgroup if we were the only member 631 */ 632 if (hwif->next == hwif) { 633 BUG_ON(hwgroup->hwif != hwif); 634 kfree(hwgroup); 635 } else { 636 /* There is another interface in hwgroup. 637 * Unlink us, and set hwgroup->drive and ->hwif to 638 * something sane. 639 */ 640 g = hwgroup->hwif; 641 while (g->next != hwif) 642 g = g->next; 643 g->next = hwif->next; 644 if (hwgroup->hwif == hwif) { 645 /* Chose a random hwif for hwgroup->hwif. 646 * It's guaranteed that there are no drives 647 * left in the hwgroup. 648 */ 649 BUG_ON(hwgroup->drive != NULL); 650 hwgroup->hwif = g; 651 } 652 BUG_ON(hwgroup->hwif == hwif); 653 } 654 655 /* More messed up locking ... */ 656 spin_unlock_irq(&ide_lock); 657 device_unregister(&hwif->gendev); 658 wait_for_completion(&hwif->gendev_rel_comp); 659 660 /* 661 * Remove us from the kernel's knowledge 662 */ 663 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); 664 kfree(hwif->sg_table); 665 unregister_blkdev(hwif->major, hwif->name); 666 spin_lock_irq(&ide_lock); 667 668 if (hwif->dma_base) { 669 (void) ide_release_dma(hwif); 670 671 hwif->dma_base = 0; 672 hwif->dma_master = 0; 673 hwif->dma_command = 0; 674 hwif->dma_vendor1 = 0; 675 hwif->dma_status = 0; 676 hwif->dma_vendor3 = 0; 677 hwif->dma_prdtable = 0; 678 679 hwif->extra_base = 0; 680 hwif->extra_ports = 0; 681 } 682 683 /* copy original settings */ 684 tmp_hwif = *hwif; 685 686 /* restore hwif data to pristine status */ 687 init_hwif_data(hwif, index); 688 init_hwif_default(hwif, index); 689 690 ide_hwif_restore(hwif, &tmp_hwif); 691 692abort: 693 spin_unlock_irq(&ide_lock); 694 up(&ide_cfg_sem); 695} 696 697EXPORT_SYMBOL(ide_unregister); 698 699 700/** 701 * ide_setup_ports - set up IDE interface ports 702 * @hw: register descriptions 703 * @base: base register 704 * @offsets: table of register offsets 705 * @ctrl: control register 706 * @ack_irq: IRQ ack 707 * @irq: interrupt lie 708 * 709 * Setup hw_regs_t structure described by parameters. You 710 * may set up the hw structure yourself OR use this routine to 711 * do it for you. This is basically a helper 712 * 713 */ 714 715void ide_setup_ports ( hw_regs_t *hw, 716 unsigned long base, int *offsets, 717 unsigned long ctrl, unsigned long intr, 718 ide_ack_intr_t *ack_intr, 719/* 720 * ide_io_ops_t *iops, 721 */ 722 int irq) 723{ 724 int i; 725 726 memset(hw, 0, sizeof(hw_regs_t)); 727 for (i = 0; i < IDE_NR_PORTS; i++) { 728 if (offsets[i] == -1) { 729 switch(i) { 730 case IDE_CONTROL_OFFSET: 731 hw->io_ports[i] = ctrl; 732 break; 733#if defined(CONFIG_AMIGA) || defined(CONFIG_MAC) 734 case IDE_IRQ_OFFSET: 735 hw->io_ports[i] = intr; 736 break; 737#endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */ 738 default: 739 hw->io_ports[i] = 0; 740 break; 741 } 742 } else { 743 hw->io_ports[i] = base + offsets[i]; 744 } 745 } 746 hw->irq = irq; 747 hw->dma = NO_DMA; 748 hw->ack_intr = ack_intr; 749/* 750 * hw->iops = iops; 751 */ 752} 753 754/** 755 * ide_register_hw_with_fixup - register IDE interface 756 * @hw: hardware registers 757 * @hwifp: pointer to returned hwif 758 * @fixup: fixup function 759 * 760 * Register an IDE interface, specifying exactly the registers etc. 761 * Set init=1 iff calling before probes have taken place. 762 * 763 * Returns -1 on error. 764 */ 765 766int ide_register_hw_with_fixup(hw_regs_t *hw, ide_hwif_t **hwifp, void(*fixup)(ide_hwif_t *hwif)) 767{ 768 int index, retry = 1; 769 ide_hwif_t *hwif; 770 771 do { 772 for (index = 0; index < MAX_HWIFS; ++index) { 773 hwif = &ide_hwifs[index]; 774 if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET]) 775 goto found; 776 } 777 for (index = 0; index < MAX_HWIFS; ++index) { 778 hwif = &ide_hwifs[index]; 779 if (hwif->hold) 780 continue; 781 if ((!hwif->present && !hwif->mate && !initializing) || 782 (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing)) 783 goto found; 784 } 785 for (index = 0; index < MAX_HWIFS; index++) 786 ide_unregister(index); 787 } while (retry--); 788 return -1; 789found: 790 if (hwif->present) 791 ide_unregister(index); 792 else if (!hwif->hold) { 793 init_hwif_data(hwif, index); 794 init_hwif_default(hwif, index); 795 } 796 if (hwif->present) 797 return -1; 798 memcpy(&hwif->hw, hw, sizeof(*hw)); 799 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports)); 800 hwif->irq = hw->irq; 801 hwif->noprobe = 0; 802 hwif->chipset = hw->chipset; 803 hwif->gendev.parent = hw->dev; 804 805 if (!initializing) { 806 probe_hwif_init_with_fixup(hwif, fixup); 807 create_proc_ide_interfaces(); 808 } 809 810 if (hwifp) 811 *hwifp = hwif; 812 813 return (initializing || hwif->present) ? index : -1; 814} 815 816EXPORT_SYMBOL(ide_register_hw_with_fixup); 817 818int ide_register_hw(hw_regs_t *hw, ide_hwif_t **hwifp) 819{ 820 return ide_register_hw_with_fixup(hw, hwifp, NULL); 821} 822 823EXPORT_SYMBOL(ide_register_hw); 824 825/* 826 * Locks for IDE setting functionality 827 */ 828 829DECLARE_MUTEX(ide_setting_sem); 830 831/** 832 * __ide_add_setting - add an ide setting option 833 * @drive: drive to use 834 * @name: setting name 835 * @rw: true if the function is read write 836 * @read_ioctl: function to call on read 837 * @write_ioctl: function to call on write 838 * @data_type: type of data 839 * @min: range minimum 840 * @max: range maximum 841 * @mul_factor: multiplication scale 842 * @div_factor: divison scale 843 * @data: private data field 844 * @set: setting 845 * @auto_remove: setting auto removal flag 846 * 847 * Removes the setting named from the device if it is present. 848 * The function takes the settings_lock to protect against 849 * parallel changes. This function must not be called from IRQ 850 * context. Returns 0 on success or -1 on failure. 851 * 852 * BUGS: This code is seriously over-engineered. There is also 853 * magic about how the driver specific features are setup. If 854 * a driver is attached we assume the driver settings are auto 855 * remove. 856 */ 857 858static int __ide_add_setting(ide_drive_t *drive, const char *name, int rw, int read_ioctl, int write_ioctl, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set, int auto_remove) 859{ 860 ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL; 861 862 down(&ide_setting_sem); 863 while ((*p) && strcmp((*p)->name, name) < 0) 864 p = &((*p)->next); 865 if ((setting = kzalloc(sizeof(*setting), GFP_KERNEL)) == NULL) 866 goto abort; 867 if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL) 868 goto abort; 869 strcpy(setting->name, name); 870 setting->rw = rw; 871 setting->read_ioctl = read_ioctl; 872 setting->write_ioctl = write_ioctl; 873 setting->data_type = data_type; 874 setting->min = min; 875 setting->max = max; 876 setting->mul_factor = mul_factor; 877 setting->div_factor = div_factor; 878 setting->data = data; 879 setting->set = set; 880 881 setting->next = *p; 882 if (auto_remove) 883 setting->auto_remove = 1; 884 *p = setting; 885 up(&ide_setting_sem); 886 return 0; 887abort: 888 up(&ide_setting_sem); 889 kfree(setting); 890 return -1; 891} 892 893int ide_add_setting(ide_drive_t *drive, const char *name, int rw, int read_ioctl, int write_ioctl, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set) 894{ 895 return __ide_add_setting(drive, name, rw, read_ioctl, write_ioctl, data_type, min, max, mul_factor, div_factor, data, set, 1); 896} 897 898EXPORT_SYMBOL(ide_add_setting); 899 900/** 901 * __ide_remove_setting - remove an ide setting option 902 * @drive: drive to use 903 * @name: setting name 904 * 905 * Removes the setting named from the device if it is present. 906 * The caller must hold the setting semaphore. 907 */ 908 909static void __ide_remove_setting (ide_drive_t *drive, char *name) 910{ 911 ide_settings_t **p, *setting; 912 913 p = (ide_settings_t **) &drive->settings; 914 915 while ((*p) && strcmp((*p)->name, name)) 916 p = &((*p)->next); 917 if ((setting = (*p)) == NULL) 918 return; 919 920 (*p) = setting->next; 921 922 kfree(setting->name); 923 kfree(setting); 924} 925 926/** 927 * ide_find_setting_by_ioctl - find a drive specific ioctl 928 * @drive: drive to scan 929 * @cmd: ioctl command to handle 930 * 931 * Scan's the device setting table for a matching entry and returns 932 * this or NULL if no entry is found. The caller must hold the 933 * setting semaphore 934 */ 935 936static ide_settings_t *ide_find_setting_by_ioctl (ide_drive_t *drive, int cmd) 937{ 938 ide_settings_t *setting = drive->settings; 939 940 while (setting) { 941 if (setting->read_ioctl == cmd || setting->write_ioctl == cmd) 942 break; 943 setting = setting->next; 944 } 945 946 return setting; 947} 948 949/** 950 * ide_find_setting_by_name - find a drive specific setting 951 * @drive: drive to scan 952 * @name: setting name 953 * 954 * Scan's the device setting table for a matching entry and returns 955 * this or NULL if no entry is found. The caller must hold the 956 * setting semaphore 957 */ 958 959ide_settings_t *ide_find_setting_by_name (ide_drive_t *drive, char *name) 960{ 961 ide_settings_t *setting = drive->settings; 962 963 while (setting) { 964 if (strcmp(setting->name, name) == 0) 965 break; 966 setting = setting->next; 967 } 968 return setting; 969} 970 971/** 972 * auto_remove_settings - remove driver specific settings 973 * @drive: drive 974 * 975 * Automatically remove all the driver specific settings for this 976 * drive. This function may sleep and must not be called from IRQ 977 * context. The caller must hold ide_setting_sem. 978 */ 979 980static void auto_remove_settings (ide_drive_t *drive) 981{ 982 ide_settings_t *setting; 983repeat: 984 setting = drive->settings; 985 while (setting) { 986 if (setting->auto_remove) { 987 __ide_remove_setting(drive, setting->name); 988 goto repeat; 989 } 990 setting = setting->next; 991 } 992} 993 994/** 995 * ide_read_setting - read an IDE setting 996 * @drive: drive to read from 997 * @setting: drive setting 998 * 999 * Read a drive setting and return the value. The caller 1000 * must hold the ide_setting_sem when making this call. 1001 * 1002 * BUGS: the data return and error are the same return value 1003 * so an error -EINVAL and true return of the same value cannot 1004 * be told apart 1005 */ 1006 1007int ide_read_setting (ide_drive_t *drive, ide_settings_t *setting) 1008{ 1009 int val = -EINVAL; 1010 unsigned long flags; 1011 1012 if ((setting->rw & SETTING_READ)) { 1013 spin_lock_irqsave(&ide_lock, flags); 1014 switch(setting->data_type) { 1015 case TYPE_BYTE: 1016 val = *((u8 *) setting->data); 1017 break; 1018 case TYPE_SHORT: 1019 val = *((u16 *) setting->data); 1020 break; 1021 case TYPE_INT: 1022 case TYPE_INTA: 1023 val = *((u32 *) setting->data); 1024 break; 1025 } 1026 spin_unlock_irqrestore(&ide_lock, flags); 1027 } 1028 return val; 1029} 1030 1031/** 1032 * ide_spin_wait_hwgroup - wait for group 1033 * @drive: drive in the group 1034 * 1035 * Wait for an IDE device group to go non busy and then return 1036 * holding the ide_lock which guards the hwgroup->busy status 1037 * and right to use it. 1038 */ 1039 1040int ide_spin_wait_hwgroup (ide_drive_t *drive) 1041{ 1042 ide_hwgroup_t *hwgroup = HWGROUP(drive); 1043 unsigned long timeout = jiffies + (3 * HZ); 1044 1045 spin_lock_irq(&ide_lock); 1046 1047 while (hwgroup->busy) { 1048 unsigned long lflags; 1049 spin_unlock_irq(&ide_lock); 1050 local_irq_set(lflags); 1051 if (time_after(jiffies, timeout)) { 1052 local_irq_restore(lflags); 1053 printk(KERN_ERR "%s: channel busy\n", drive->name); 1054 return -EBUSY; 1055 } 1056 local_irq_restore(lflags); 1057 spin_lock_irq(&ide_lock); 1058 } 1059 return 0; 1060} 1061 1062EXPORT_SYMBOL(ide_spin_wait_hwgroup); 1063 1064/** 1065 * ide_write_setting - read an IDE setting 1066 * @drive: drive to read from 1067 * @setting: drive setting 1068 * @val: value 1069 * 1070 * Write a drive setting if it is possible. The caller 1071 * must hold the ide_setting_sem when making this call. 1072 * 1073 * BUGS: the data return and error are the same return value 1074 * so an error -EINVAL and true return of the same value cannot 1075 * be told apart 1076 * 1077 * FIXME: This should be changed to enqueue a special request 1078 * to the driver to change settings, and then wait on a sema for completion. 1079 * The current scheme of polling is kludgy, though safe enough. 1080 */ 1081 1082int ide_write_setting (ide_drive_t *drive, ide_settings_t *setting, int val) 1083{ 1084 int i; 1085 u32 *p; 1086 1087 if (!capable(CAP_SYS_ADMIN)) 1088 return -EACCES; 1089 if (!(setting->rw & SETTING_WRITE)) 1090 return -EPERM; 1091 if (val < setting->min || val > setting->max) 1092 return -EINVAL; 1093 if (setting->set) 1094 return setting->set(drive, val); 1095 if (ide_spin_wait_hwgroup(drive)) 1096 return -EBUSY; 1097 switch (setting->data_type) { 1098 case TYPE_BYTE: 1099 *((u8 *) setting->data) = val; 1100 break; 1101 case TYPE_SHORT: 1102 *((u16 *) setting->data) = val; 1103 break; 1104 case TYPE_INT: 1105 *((u32 *) setting->data) = val; 1106 break; 1107 case TYPE_INTA: 1108 p = (u32 *) setting->data; 1109 for (i = 0; i < 1 << PARTN_BITS; i++, p++) 1110 *p = val; 1111 break; 1112 } 1113 spin_unlock_irq(&ide_lock); 1114 return 0; 1115} 1116 1117static int set_io_32bit(ide_drive_t *drive, int arg) 1118{ 1119 drive->io_32bit = arg; 1120#ifdef CONFIG_BLK_DEV_DTC2278 1121 if (HWIF(drive)->chipset == ide_dtc2278) 1122 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg; 1123#endif /* CONFIG_BLK_DEV_DTC2278 */ 1124 return 0; 1125} 1126 1127static int set_using_dma (ide_drive_t *drive, int arg) 1128{ 1129#ifdef CONFIG_BLK_DEV_IDEDMA 1130 if (!drive->id || !(drive->id->capability & 1)) 1131 return -EPERM; 1132 if (HWIF(drive)->ide_dma_check == NULL) 1133 return -EPERM; 1134 if (arg) { 1135 if (HWIF(drive)->ide_dma_check(drive)) return -EIO; 1136 if (HWIF(drive)->ide_dma_on(drive)) return -EIO; 1137 } else { 1138 if (__ide_dma_off(drive)) 1139 return -EIO; 1140 } 1141 return 0; 1142#else 1143 return -EPERM; 1144#endif 1145} 1146 1147static int set_pio_mode (ide_drive_t *drive, int arg) 1148{ 1149 struct request rq; 1150 1151 if (!HWIF(drive)->tuneproc) 1152 return -ENOSYS; 1153 if (drive->special.b.set_tune) 1154 return -EBUSY; 1155 ide_init_drive_cmd(&rq); 1156 drive->tune_req = (u8) arg; 1157 drive->special.b.set_tune = 1; 1158 (void) ide_do_drive_cmd(drive, &rq, ide_wait); 1159 return 0; 1160} 1161 1162static int set_xfer_rate (ide_drive_t *drive, int arg) 1163{ 1164 int err = ide_wait_cmd(drive, 1165 WIN_SETFEATURES, (u8) arg, 1166 SETFEATURES_XFER, 0, NULL); 1167 1168 if (!err && arg) { 1169 ide_set_xfer_rate(drive, (u8) arg); 1170 ide_driveid_update(drive); 1171 } 1172 return err; 1173} 1174 1175/** 1176 * ide_add_generic_settings - generic ide settings 1177 * @drive: drive being configured 1178 * 1179 * Add the generic parts of the system settings to the /proc files and 1180 * ioctls for this IDE device. The caller must not be holding the 1181 * ide_setting_sem. 1182 */ 1183 1184void ide_add_generic_settings (ide_drive_t *drive) 1185{ 1186/* 1187 * drive setting name read/write access read ioctl write ioctl data type min max mul_factor div_factor data pointer set function 1188 */ 1189 __ide_add_setting(drive, "io_32bit", drive->no_io_32bit ? SETTING_READ : SETTING_RW, HDIO_GET_32BIT, HDIO_SET_32BIT, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->io_32bit, set_io_32bit, 0); 1190 __ide_add_setting(drive, "keepsettings", SETTING_RW, HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL, 0); 1191 __ide_add_setting(drive, "nice1", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0); 1192 __ide_add_setting(drive, "pio_mode", SETTING_WRITE, -1, HDIO_SET_PIO_MODE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0); 1193 __ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL, 0); 1194 __ide_add_setting(drive, "using_dma", SETTING_RW, HDIO_GET_DMA, HDIO_SET_DMA, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma, 0); 1195 __ide_add_setting(drive, "init_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0); 1196 __ide_add_setting(drive, "current_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0); 1197 __ide_add_setting(drive, "number", SETTING_RW, -1, -1, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0); 1198} 1199 1200/** 1201 * system_bus_clock - clock guess 1202 * 1203 * External version of the bus clock guess used by very old IDE drivers 1204 * for things like VLB timings. Should not be used. 1205 */ 1206 1207int system_bus_clock (void) 1208{ 1209 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed )); 1210} 1211 1212EXPORT_SYMBOL(system_bus_clock); 1213 1214static int generic_ide_suspend(struct device *dev, pm_message_t mesg) 1215{ 1216 ide_drive_t *drive = dev->driver_data; 1217 struct request rq; 1218 struct request_pm_state rqpm; 1219 ide_task_t args; 1220 1221 memset(&rq, 0, sizeof(rq)); 1222 memset(&rqpm, 0, sizeof(rqpm)); 1223 memset(&args, 0, sizeof(args)); 1224 rq.cmd_type = REQ_TYPE_PM_SUSPEND; 1225 rq.special = &args; 1226 rq.data = &rqpm; 1227 rqpm.pm_step = ide_pm_state_start_suspend; 1228 if (mesg.event == PM_EVENT_PRETHAW) 1229 mesg.event = PM_EVENT_FREEZE; 1230 rqpm.pm_state = mesg.event; 1231 1232 return ide_do_drive_cmd(drive, &rq, ide_wait); 1233} 1234 1235static int generic_ide_resume(struct device *dev) 1236{ 1237 ide_drive_t *drive = dev->driver_data; 1238 struct request rq; 1239 struct request_pm_state rqpm; 1240 ide_task_t args; 1241 1242 memset(&rq, 0, sizeof(rq)); 1243 memset(&rqpm, 0, sizeof(rqpm)); 1244 memset(&args, 0, sizeof(args)); 1245 rq.cmd_type = REQ_TYPE_PM_RESUME; 1246 rq.special = &args; 1247 rq.data = &rqpm; 1248 rqpm.pm_step = ide_pm_state_start_resume; 1249 rqpm.pm_state = PM_EVENT_ON; 1250 1251 return ide_do_drive_cmd(drive, &rq, ide_head_wait); 1252} 1253 1254int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, 1255 unsigned int cmd, unsigned long arg) 1256{ 1257 ide_settings_t *setting; 1258 ide_driver_t *drv; 1259 int err = 0; 1260 void __user *p = (void __user *)arg; 1261 1262 down(&ide_setting_sem); 1263 if ((setting = ide_find_setting_by_ioctl(drive, cmd)) != NULL) { 1264 if (cmd == setting->read_ioctl) { 1265 err = ide_read_setting(drive, setting); 1266 up(&ide_setting_sem); 1267 return err >= 0 ? put_user(err, (long __user *)arg) : err; 1268 } else { 1269 if (bdev != bdev->bd_contains) 1270 err = -EINVAL; 1271 else 1272 err = ide_write_setting(drive, setting, arg); 1273 up(&ide_setting_sem); 1274 return err; 1275 } 1276 } 1277 up(&ide_setting_sem); 1278 1279 switch (cmd) { 1280 case HDIO_OBSOLETE_IDENTITY: 1281 case HDIO_GET_IDENTITY: 1282 if (bdev != bdev->bd_contains) 1283 return -EINVAL; 1284 if (drive->id_read == 0) 1285 return -ENOMSG; 1286 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) 1287 return -EFAULT; 1288 return 0; 1289 1290 case HDIO_GET_NICE: 1291 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | 1292 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | 1293 drive->nice0 << IDE_NICE_0 | 1294 drive->nice1 << IDE_NICE_1 | 1295 drive->nice2 << IDE_NICE_2, 1296 (long __user *) arg); 1297 1298#ifdef CONFIG_IDE_TASK_IOCTL 1299 case HDIO_DRIVE_TASKFILE: 1300 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) 1301 return -EACCES; 1302 switch(drive->media) { 1303 case ide_disk: 1304 return ide_taskfile_ioctl(drive, cmd, arg); 1305 default: 1306 return -ENOMSG; 1307 } 1308#endif /* CONFIG_IDE_TASK_IOCTL */ 1309 1310 case HDIO_DRIVE_CMD: 1311 if (!capable(CAP_SYS_RAWIO)) 1312 return -EACCES; 1313 return ide_cmd_ioctl(drive, cmd, arg); 1314 1315 case HDIO_DRIVE_TASK: 1316 if (!capable(CAP_SYS_RAWIO)) 1317 return -EACCES; 1318 return ide_task_ioctl(drive, cmd, arg); 1319 1320 case HDIO_SCAN_HWIF: 1321 { 1322 hw_regs_t hw; 1323 int args[3]; 1324 if (!capable(CAP_SYS_RAWIO)) return -EACCES; 1325 if (copy_from_user(args, p, 3 * sizeof(int))) 1326 return -EFAULT; 1327 memset(&hw, 0, sizeof(hw)); 1328 ide_init_hwif_ports(&hw, (unsigned long) args[0], 1329 (unsigned long) args[1], NULL); 1330 hw.irq = args[2]; 1331 if (ide_register_hw(&hw, NULL) == -1) 1332 return -EIO; 1333 return 0; 1334 } 1335 case HDIO_UNREGISTER_HWIF: 1336 if (!capable(CAP_SYS_RAWIO)) return -EACCES; 1337 /* (arg > MAX_HWIFS) checked in function */ 1338 ide_unregister(arg); 1339 return 0; 1340 case HDIO_SET_NICE: 1341 if (!capable(CAP_SYS_ADMIN)) return -EACCES; 1342 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) 1343 return -EPERM; 1344 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; 1345 drv = *(ide_driver_t **)bdev->bd_disk->private_data; 1346 if (drive->dsc_overlap && !drv->supports_dsc_overlap) { 1347 drive->dsc_overlap = 0; 1348 return -EPERM; 1349 } 1350 drive->nice1 = (arg >> IDE_NICE_1) & 1; 1351 return 0; 1352 case HDIO_DRIVE_RESET: 1353 { 1354 unsigned long flags; 1355 if (!capable(CAP_SYS_ADMIN)) return -EACCES; 1356 1357 /* 1358 * Abort the current command on the 1359 * group if there is one, taking 1360 * care not to allow anything else 1361 * to be queued and to die on the 1362 * spot if we miss one somehow 1363 */ 1364 1365 spin_lock_irqsave(&ide_lock, flags); 1366 1367 ide_abort(drive, "drive reset"); 1368 1369 BUG_ON(HWGROUP(drive)->handler); 1370 1371 /* Ensure nothing gets queued after we 1372 drop the lock. Reset will clear the busy */ 1373 1374 HWGROUP(drive)->busy = 1; 1375 spin_unlock_irqrestore(&ide_lock, flags); 1376 (void) ide_do_reset(drive); 1377 1378 return 0; 1379 } 1380 1381 case CDROMEJECT: 1382 case CDROMCLOSETRAY: 1383 return scsi_cmd_ioctl(file, bdev->bd_disk, cmd, p); 1384 1385 case HDIO_GET_BUSSTATE: 1386 if (!capable(CAP_SYS_ADMIN)) 1387 return -EACCES; 1388 if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) 1389 return -EFAULT; 1390 return 0; 1391 1392 case HDIO_SET_BUSSTATE: 1393 if (!capable(CAP_SYS_ADMIN)) 1394 return -EACCES; 1395 if (HWIF(drive)->busproc) 1396 return HWIF(drive)->busproc(drive, (int)arg); 1397 return -EOPNOTSUPP; 1398 default: 1399 return -EINVAL; 1400 } 1401} 1402 1403EXPORT_SYMBOL(generic_ide_ioctl); 1404 1405/* 1406 * stridx() returns the offset of c within s, 1407 * or -1 if c is '\0' or not found within s. 1408 */ 1409static int __init stridx (const char *s, char c) 1410{ 1411 char *i = strchr(s, c); 1412 return (i && c) ? i - s : -1; 1413} 1414 1415/* 1416 * match_parm() does parsing for ide_setup(): 1417 * 1418 * 1. the first char of s must be '='. 1419 * 2. if the remainder matches one of the supplied keywords, 1420 * the index (1 based) of the keyword is negated and returned. 1421 * 3. if the remainder is a series of no more than max_vals numbers 1422 * separated by commas, the numbers are saved in vals[] and a 1423 * count of how many were saved is returned. Base10 is assumed, 1424 * and base16 is allowed when prefixed with "0x". 1425 * 4. otherwise, zero is returned. 1426 */ 1427static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) 1428{ 1429 static const char *decimal = "0123456789"; 1430 static const char *hex = "0123456789abcdef"; 1431 int i, n; 1432 1433 if (*s++ == '=') { 1434 /* 1435 * Try matching against the supplied keywords, 1436 * and return -(index+1) if we match one 1437 */ 1438 if (keywords != NULL) { 1439 for (i = 0; *keywords != NULL; ++i) { 1440 if (!strcmp(s, *keywords++)) 1441 return -(i+1); 1442 } 1443 } 1444 /* 1445 * Look for a series of no more than "max_vals" 1446 * numeric values separated by commas, in base10, 1447 * or base16 when prefixed with "0x". 1448 * Return a count of how many were found. 1449 */ 1450 for (n = 0; (i = stridx(decimal, *s)) >= 0;) { 1451 vals[n] = i; 1452 while ((i = stridx(decimal, *++s)) >= 0) 1453 vals[n] = (vals[n] * 10) + i; 1454 if (*s == 'x' && !vals[n]) { 1455 while ((i = stridx(hex, *++s)) >= 0) 1456 vals[n] = (vals[n] * 0x10) + i; 1457 } 1458 if (++n == max_vals) 1459 break; 1460 if (*s == ',' || *s == ';') 1461 ++s; 1462 } 1463 if (!*s) 1464 return n; 1465 } 1466 return 0; /* zero = nothing matched */ 1467} 1468 1469#ifdef CONFIG_BLK_DEV_ALI14XX 1470static int __initdata probe_ali14xx; 1471extern int ali14xx_init(void); 1472#endif 1473#ifdef CONFIG_BLK_DEV_UMC8672 1474static int __initdata probe_umc8672; 1475extern int umc8672_init(void); 1476#endif 1477#ifdef CONFIG_BLK_DEV_DTC2278 1478static int __initdata probe_dtc2278; 1479extern int dtc2278_init(void); 1480#endif 1481#ifdef CONFIG_BLK_DEV_HT6560B 1482static int __initdata probe_ht6560b; 1483extern int ht6560b_init(void); 1484#endif 1485#ifdef CONFIG_BLK_DEV_QD65XX 1486static int __initdata probe_qd65xx; 1487extern int qd65xx_init(void); 1488#endif 1489 1490static int __initdata is_chipset_set[MAX_HWIFS]; 1491 1492/* 1493 * ide_setup() gets called VERY EARLY during initialization, 1494 * to handle kernel "command line" strings beginning with "hdx=" or "ide". 1495 * 1496 * Remember to update Documentation/ide.txt if you change something here. 1497 */ 1498static int __init ide_setup(char *s) 1499{ 1500 int i, vals[3]; 1501 ide_hwif_t *hwif; 1502 ide_drive_t *drive; 1503 unsigned int hw, unit; 1504 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); 1505 const char max_hwif = '0' + (MAX_HWIFS - 1); 1506 1507 1508 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ 1509 return 0; /* driver and not us */ 1510 1511 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) 1512 return 0; 1513 1514 printk(KERN_INFO "ide_setup: %s", s); 1515 init_ide_data (); 1516 1517#ifdef CONFIG_BLK_DEV_IDEDOUBLER 1518 if (!strcmp(s, "ide=doubler")) { 1519 extern int ide_doubler; 1520 1521 printk(" : Enabled support for IDE doublers\n"); 1522 ide_doubler = 1; 1523 return 1; 1524 } 1525#endif /* CONFIG_BLK_DEV_IDEDOUBLER */ 1526 1527 if (!strcmp(s, "ide=nodma")) { 1528 printk(" : Prevented DMA\n"); 1529 noautodma = 1; 1530 return 1; 1531 } 1532 1533#ifdef CONFIG_BLK_DEV_IDEPCI 1534 if (!strcmp(s, "ide=reverse")) { 1535 ide_scan_direction = 1; 1536 printk(" : Enabled support for IDE inverse scan order.\n"); 1537 return 1; 1538 } 1539#endif /* CONFIG_BLK_DEV_IDEPCI */ 1540 1541 /* 1542 * Look for drive options: "hdx=" 1543 */ 1544 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { 1545 const char *hd_words[] = { 1546 "none", "noprobe", "nowerr", "cdrom", "serialize", 1547 "autotune", "noautotune", "minus8", "swapdata", "bswap", 1548 "noflush", "remap", "remap63", "scsi", NULL }; 1549 unit = s[2] - 'a'; 1550 hw = unit / MAX_DRIVES; 1551 unit = unit % MAX_DRIVES; 1552 hwif = &ide_hwifs[hw]; 1553 drive = &hwif->drives[unit]; 1554 if (strncmp(s + 4, "ide-", 4) == 0) { 1555 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); 1556 goto done; 1557 } 1558 switch (match_parm(&s[3], hd_words, vals, 3)) { 1559 case -1: /* "none" */ 1560 case -2: /* "noprobe" */ 1561 drive->noprobe = 1; 1562 goto done; 1563 case -3: /* "nowerr" */ 1564 drive->bad_wstat = BAD_R_STAT; 1565 hwif->noprobe = 0; 1566 goto done; 1567 case -4: /* "cdrom" */ 1568 drive->present = 1; 1569 drive->media = ide_cdrom; 1570 /* an ATAPI device ignores DRDY */ 1571 drive->ready_stat = 0; 1572 hwif->noprobe = 0; 1573 goto done; 1574 case -5: /* "serialize" */ 1575 printk(" -- USE \"ide%d=serialize\" INSTEAD", hw); 1576 goto do_serialize; 1577 case -6: /* "autotune" */ 1578 drive->autotune = IDE_TUNE_AUTO; 1579 goto obsolete_option; 1580 case -7: /* "noautotune" */ 1581 drive->autotune = IDE_TUNE_NOAUTO; 1582 goto obsolete_option; 1583 case -9: /* "swapdata" */ 1584 case -10: /* "bswap" */ 1585 drive->bswap = 1; 1586 goto done; 1587 case -11: /* noflush */ 1588 drive->noflush = 1; 1589 goto done; 1590 case -12: /* "remap" */ 1591 drive->remap_0_to_1 = 1; 1592 goto done; 1593 case -13: /* "remap63" */ 1594 drive->sect0 = 63; 1595 goto done; 1596 case -14: /* "scsi" */ 1597 drive->scsi = 1; 1598 goto done; 1599 case 3: /* cyl,head,sect */ 1600 drive->media = ide_disk; 1601 drive->ready_stat = READY_STAT; 1602 drive->cyl = drive->bios_cyl = vals[0]; 1603 drive->head = drive->bios_head = vals[1]; 1604 drive->sect = drive->bios_sect = vals[2]; 1605 drive->present = 1; 1606 drive->forced_geom = 1; 1607 hwif->noprobe = 0; 1608 goto done; 1609 default: 1610 goto bad_option; 1611 } 1612 } 1613 1614 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') 1615 goto bad_option; 1616 /* 1617 * Look for bus speed option: "idebus=" 1618 */ 1619 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { 1620 if (match_parm(&s[6], NULL, vals, 1) != 1) 1621 goto bad_option; 1622 if (vals[0] >= 20 && vals[0] <= 66) { 1623 idebus_parameter = vals[0]; 1624 } else 1625 printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); 1626 goto done; 1627 } 1628 /* 1629 * Look for interface options: "idex=" 1630 */ 1631 if (s[3] >= '0' && s[3] <= max_hwif) { 1632 /* 1633 * Be VERY CAREFUL changing this: note hardcoded indexes below 1634 * (-8, -9, -10) are reserved to ease the hardcoding. 1635 */ 1636 static const char *ide_words[] = { 1637 "noprobe", "serialize", "autotune", "noautotune", 1638 "reset", "dma", "ata66", "minus8", "minus9", 1639 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", 1640 "dtc2278", "umc8672", "ali14xx", NULL }; 1641 hw = s[3] - '0'; 1642 hwif = &ide_hwifs[hw]; 1643 i = match_parm(&s[4], ide_words, vals, 3); 1644 1645 /* 1646 * Cryptic check to ensure chipset not already set for hwif. 1647 * Note: we can't depend on hwif->chipset here. 1648 */ 1649 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { 1650 /* chipset already specified */ 1651 if (is_chipset_set[hw]) 1652 goto bad_option; 1653 if (i > -18 && i <= -11) { 1654 /* these drivers are for "ide0=" only */ 1655 if (hw != 0) 1656 goto bad_hwif; 1657 /* chipset already specified for 2nd port */ 1658 if (is_chipset_set[hw+1]) 1659 goto bad_option; 1660 } 1661 is_chipset_set[hw] = 1; 1662 printk("\n"); 1663 } 1664 1665 switch (i) { 1666#ifdef CONFIG_BLK_DEV_ALI14XX 1667 case -17: /* "ali14xx" */ 1668 probe_ali14xx = 1; 1669 goto done; 1670#endif 1671#ifdef CONFIG_BLK_DEV_UMC8672 1672 case -16: /* "umc8672" */ 1673 probe_umc8672 = 1; 1674 goto done; 1675#endif 1676#ifdef CONFIG_BLK_DEV_DTC2278 1677 case -15: /* "dtc2278" */ 1678 probe_dtc2278 = 1; 1679 goto done; 1680#endif 1681#ifdef CONFIG_BLK_DEV_CMD640 1682 case -14: /* "cmd640_vlb" */ 1683 { 1684 extern int cmd640_vlb; /* flag for cmd640.c */ 1685 cmd640_vlb = 1; 1686 goto done; 1687 } 1688#endif 1689#ifdef CONFIG_BLK_DEV_HT6560B 1690 case -13: /* "ht6560b" */ 1691 probe_ht6560b = 1; 1692 goto done; 1693#endif 1694#ifdef CONFIG_BLK_DEV_QD65XX 1695 case -12: /* "qd65xx" */ 1696 probe_qd65xx = 1; 1697 goto done; 1698#endif 1699#ifdef CONFIG_BLK_DEV_4DRIVES 1700 case -11: /* "four" drives on one set of ports */ 1701 { 1702 ide_hwif_t *mate = &ide_hwifs[hw^1]; 1703 mate->drives[0].select.all ^= 0x20; 1704 mate->drives[1].select.all ^= 0x20; 1705 hwif->chipset = mate->chipset = ide_4drives; 1706 mate->irq = hwif->irq; 1707 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); 1708 goto do_serialize; 1709 } 1710#endif /* CONFIG_BLK_DEV_4DRIVES */ 1711 case -10: /* minus10 */ 1712 case -9: /* minus9 */ 1713 case -8: /* minus8 */ 1714 goto bad_option; 1715 case -7: /* ata66 */ 1716#ifdef CONFIG_BLK_DEV_IDEPCI 1717 hwif->udma_four = 1; 1718 goto obsolete_option; 1719#else 1720 goto bad_hwif; 1721#endif 1722 case -6: /* dma */ 1723 hwif->autodma = 1; 1724 goto obsolete_option; 1725 case -5: /* "reset" */ 1726 hwif->reset = 1; 1727 goto obsolete_option; 1728 case -4: /* "noautotune" */ 1729 hwif->drives[0].autotune = IDE_TUNE_NOAUTO; 1730 hwif->drives[1].autotune = IDE_TUNE_NOAUTO; 1731 goto obsolete_option; 1732 case -3: /* "autotune" */ 1733 hwif->drives[0].autotune = IDE_TUNE_AUTO; 1734 hwif->drives[1].autotune = IDE_TUNE_AUTO; 1735 goto obsolete_option; 1736 case -2: /* "serialize" */ 1737 do_serialize: 1738 hwif->mate = &ide_hwifs[hw^1]; 1739 hwif->mate->mate = hwif; 1740 hwif->serialized = hwif->mate->serialized = 1; 1741 goto obsolete_option; 1742 1743 case -1: /* "noprobe" */ 1744 hwif->noprobe = 1; 1745 goto done; 1746 1747 case 1: /* base */ 1748 vals[1] = vals[0] + 0x206; /* default ctl */ 1749 case 2: /* base,ctl */ 1750 vals[2] = 0; /* default irq = probe for it */ 1751 case 3: /* base,ctl,irq */ 1752 hwif->hw.irq = vals[2]; 1753 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq); 1754 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports)); 1755 hwif->irq = vals[2]; 1756 hwif->noprobe = 0; 1757 hwif->chipset = ide_forced; 1758 goto obsolete_option; 1759 1760 case 0: goto bad_option; 1761 default: 1762 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); 1763 return 1; 1764 } 1765 } 1766bad_option: 1767 printk(" -- BAD OPTION\n"); 1768 return 1; 1769obsolete_option: 1770 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); 1771 return 1; 1772bad_hwif: 1773 printk("-- NOT SUPPORTED ON ide%d", hw); 1774done: 1775 printk("\n"); 1776 return 1; 1777} 1778 1779extern void pnpide_init(void); 1780extern void h8300_ide_init(void); 1781 1782/* 1783 * probe_for_hwifs() finds/initializes "known" IDE interfaces 1784 */ 1785static void __init probe_for_hwifs (void) 1786{ 1787#ifdef CONFIG_BLK_DEV_IDEPCI 1788 ide_scan_pcibus(ide_scan_direction); 1789#endif /* CONFIG_BLK_DEV_IDEPCI */ 1790 1791#ifdef CONFIG_ETRAX_IDE 1792 { 1793 extern void init_e100_ide(void); 1794 init_e100_ide(); 1795 } 1796#endif /* CONFIG_ETRAX_IDE */ 1797#ifdef CONFIG_BLK_DEV_CMD640 1798 { 1799 extern void ide_probe_for_cmd640x(void); 1800 ide_probe_for_cmd640x(); 1801 } 1802#endif /* CONFIG_BLK_DEV_CMD640 */ 1803#ifdef CONFIG_BLK_DEV_IDE_PMAC 1804 { 1805 extern void pmac_ide_probe(void); 1806 pmac_ide_probe(); 1807 } 1808#endif /* CONFIG_BLK_DEV_IDE_PMAC */ 1809#ifdef CONFIG_BLK_DEV_GAYLE 1810 { 1811 extern void gayle_init(void); 1812 gayle_init(); 1813 } 1814#endif /* CONFIG_BLK_DEV_GAYLE */ 1815#ifdef CONFIG_BLK_DEV_FALCON_IDE 1816 { 1817 extern void falconide_init(void); 1818 falconide_init(); 1819 } 1820#endif /* CONFIG_BLK_DEV_FALCON_IDE */ 1821#ifdef CONFIG_BLK_DEV_MAC_IDE 1822 { 1823 extern void macide_init(void); 1824 macide_init(); 1825 } 1826#endif /* CONFIG_BLK_DEV_MAC_IDE */ 1827#ifdef CONFIG_BLK_DEV_Q40IDE 1828 { 1829 extern void q40ide_init(void); 1830 q40ide_init(); 1831 } 1832#endif /* CONFIG_BLK_DEV_Q40IDE */ 1833#ifdef CONFIG_BLK_DEV_BUDDHA 1834 { 1835 extern void buddha_init(void); 1836 buddha_init(); 1837 } 1838#endif /* CONFIG_BLK_DEV_BUDDHA */ 1839#ifdef CONFIG_BLK_DEV_IDEPNP 1840 pnpide_init(); 1841#endif 1842#ifdef CONFIG_H8300 1843 h8300_ide_init(); 1844#endif 1845} 1846 1847void ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver) 1848{ 1849#ifdef CONFIG_PROC_FS 1850 ide_add_proc_entries(drive->proc, driver->proc, drive); 1851#endif 1852} 1853 1854EXPORT_SYMBOL(ide_register_subdriver); 1855 1856/** 1857 * ide_unregister_subdriver - disconnect drive from driver 1858 * @drive: drive to unplug 1859 * @driver: driver 1860 * 1861 * Disconnect a drive from the driver it was attached to and then 1862 * clean up the various proc files and other objects attached to it. 1863 * 1864 * Takes ide_setting_sem and ide_lock. 1865 * Caller must hold none of the locks. 1866 */ 1867 1868void ide_unregister_subdriver(ide_drive_t *drive, ide_driver_t *driver) 1869{ 1870 unsigned long flags; 1871 1872 down(&ide_setting_sem); 1873 spin_lock_irqsave(&ide_lock, flags); 1874#ifdef CONFIG_PROC_FS 1875 ide_remove_proc_entries(drive->proc, driver->proc); 1876#endif 1877 auto_remove_settings(drive); 1878 spin_unlock_irqrestore(&ide_lock, flags); 1879 up(&ide_setting_sem); 1880} 1881 1882EXPORT_SYMBOL(ide_unregister_subdriver); 1883 1884/* 1885 * Probe module 1886 */ 1887 1888EXPORT_SYMBOL(ide_lock); 1889 1890static int ide_bus_match(struct device *dev, struct device_driver *drv) 1891{ 1892 return 1; 1893} 1894 1895static char *media_string(ide_drive_t *drive) 1896{ 1897 switch (drive->media) { 1898 case ide_disk: 1899 return "disk"; 1900 case ide_cdrom: 1901 return "cdrom"; 1902 case ide_tape: 1903 return "tape"; 1904 case ide_floppy: 1905 return "floppy"; 1906 default: 1907 return "UNKNOWN"; 1908 } 1909} 1910 1911static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) 1912{ 1913 ide_drive_t *drive = to_ide_device(dev); 1914 return sprintf(buf, "%s\n", media_string(drive)); 1915} 1916 1917static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) 1918{ 1919 ide_drive_t *drive = to_ide_device(dev); 1920 return sprintf(buf, "%s\n", drive->name); 1921} 1922 1923static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) 1924{ 1925 ide_drive_t *drive = to_ide_device(dev); 1926 return sprintf(buf, "ide:m-%s\n", media_string(drive)); 1927} 1928 1929static struct device_attribute ide_dev_attrs[] = { 1930 __ATTR_RO(media), 1931 __ATTR_RO(drivename), 1932 __ATTR_RO(modalias), 1933 __ATTR_NULL 1934}; 1935 1936static int ide_uevent(struct device *dev, char **envp, int num_envp, 1937 char *buffer, int buffer_size) 1938{ 1939 ide_drive_t *drive = to_ide_device(dev); 1940 int i = 0; 1941 int length = 0; 1942 1943 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, 1944 "MEDIA=%s", media_string(drive)); 1945 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, 1946 "DRIVENAME=%s", drive->name); 1947 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, 1948 "MODALIAS=ide:m-%s", media_string(drive)); 1949 envp[i] = NULL; 1950 return 0; 1951} 1952 1953static int generic_ide_probe(struct device *dev) 1954{ 1955 ide_drive_t *drive = to_ide_device(dev); 1956 ide_driver_t *drv = to_ide_driver(dev->driver); 1957 1958 return drv->probe ? drv->probe(drive) : -ENODEV; 1959} 1960 1961static int generic_ide_remove(struct device *dev) 1962{ 1963 ide_drive_t *drive = to_ide_device(dev); 1964 ide_driver_t *drv = to_ide_driver(dev->driver); 1965 1966 if (drv->remove) 1967 drv->remove(drive); 1968 1969 return 0; 1970} 1971 1972static void generic_ide_shutdown(struct device *dev) 1973{ 1974 ide_drive_t *drive = to_ide_device(dev); 1975 ide_driver_t *drv = to_ide_driver(dev->driver); 1976 1977 if (dev->driver && drv->shutdown) 1978 drv->shutdown(drive); 1979} 1980 1981struct bus_type ide_bus_type = { 1982 .name = "ide", 1983 .match = ide_bus_match, 1984 .uevent = ide_uevent, 1985 .probe = generic_ide_probe, 1986 .remove = generic_ide_remove, 1987 .shutdown = generic_ide_shutdown, 1988 .dev_attrs = ide_dev_attrs, 1989 .suspend = generic_ide_suspend, 1990 .resume = generic_ide_resume, 1991}; 1992 1993EXPORT_SYMBOL_GPL(ide_bus_type); 1994 1995/* 1996 * This is gets invoked once during initialization, to set *everything* up 1997 */ 1998static int __init ide_init(void) 1999{ 2000 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); 2001 system_bus_speed = ide_system_bus_speed(); 2002 2003 bus_register(&ide_bus_type); 2004 2005 init_ide_data(); 2006 2007#ifdef CONFIG_PROC_FS 2008 proc_ide_root = proc_mkdir("ide", NULL); 2009#endif 2010 2011#ifdef CONFIG_BLK_DEV_ALI14XX 2012 if (probe_ali14xx) 2013 (void)ali14xx_init(); 2014#endif 2015#ifdef CONFIG_BLK_DEV_UMC8672 2016 if (probe_umc8672) 2017 (void)umc8672_init(); 2018#endif 2019#ifdef CONFIG_BLK_DEV_DTC2278 2020 if (probe_dtc2278) 2021 (void)dtc2278_init(); 2022#endif 2023#ifdef CONFIG_BLK_DEV_HT6560B 2024 if (probe_ht6560b) 2025 (void)ht6560b_init(); 2026#endif 2027#ifdef CONFIG_BLK_DEV_QD65XX 2028 if (probe_qd65xx) 2029 (void)qd65xx_init(); 2030#endif 2031 2032 initializing = 1; 2033 /* Probe for special PCI and other "known" interface chipsets. */ 2034 probe_for_hwifs(); 2035 initializing = 0; 2036 2037#ifdef CONFIG_PROC_FS 2038 proc_ide_create(); 2039#endif 2040 return 0; 2041} 2042 2043#ifdef MODULE 2044static char *options = NULL; 2045module_param(options, charp, 0); 2046MODULE_LICENSE("GPL"); 2047 2048static void __init parse_options (char *line) 2049{ 2050 char *next = line; 2051 2052 if (line == NULL || !*line) 2053 return; 2054 while ((line = next) != NULL) { 2055 if ((next = strchr(line,' ')) != NULL) 2056 *next++ = 0; 2057 if (!ide_setup(line)) 2058 printk (KERN_INFO "Unknown option '%s'\n", line); 2059 } 2060} 2061 2062int __init init_module (void) 2063{ 2064 parse_options(options); 2065 return ide_init(); 2066} 2067 2068void cleanup_module (void) 2069{ 2070 int index; 2071 2072 for (index = 0; index < MAX_HWIFS; ++index) 2073 ide_unregister(index); 2074 2075#ifdef CONFIG_PROC_FS 2076 proc_ide_destroy(); 2077#endif 2078 2079 bus_unregister(&ide_bus_type); 2080} 2081 2082#else /* !MODULE */ 2083 2084__setup("", ide_setup); 2085 2086module_init(ide_init); 2087 2088#endif /* MODULE */ 2089