ide.c revision 6ab3d5624e172c553004ecc862bfeac16d9d68b7
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 settngs 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->dma_extra = tmp_hwif->dma_extra; 543 hwif->config_data = tmp_hwif->config_data; 544 hwif->select_data = tmp_hwif->select_data; 545 hwif->autodma = tmp_hwif->autodma; 546 hwif->udma_four = tmp_hwif->udma_four; 547 hwif->no_dsc = tmp_hwif->no_dsc; 548 549 hwif->hwif_data = tmp_hwif->hwif_data; 550} 551 552/** 553 * ide_unregister - free an ide interface 554 * @index: index of interface (will change soon to a pointer) 555 * 556 * Perform the final unregister of an IDE interface. At the moment 557 * we don't refcount interfaces so this will also get split up. 558 * 559 * Locking: 560 * The caller must not hold the IDE locks 561 * The drive present/vanishing is not yet properly locked 562 * Take care with the callbacks. These have been split to avoid 563 * deadlocking the IDE layer. The shutdown callback is called 564 * before we take the lock and free resources. It is up to the 565 * caller to be sure there is no pending I/O here, and that 566 * the interfce will not be reopened (present/vanishing locking 567 * isnt yet done btw). After we commit to the final kill we 568 * call the cleanup callback with the ide locks held. 569 * 570 * Unregister restores the hwif structures to the default state. 571 * This is raving bonkers. 572 */ 573 574void ide_unregister(unsigned int index) 575{ 576 ide_drive_t *drive; 577 ide_hwif_t *hwif, *g; 578 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_sem */ 579 ide_hwgroup_t *hwgroup; 580 int irq_count = 0, unit; 581 582 BUG_ON(index >= MAX_HWIFS); 583 584 BUG_ON(in_interrupt()); 585 BUG_ON(irqs_disabled()); 586 down(&ide_cfg_sem); 587 spin_lock_irq(&ide_lock); 588 hwif = &ide_hwifs[index]; 589 if (!hwif->present) 590 goto abort; 591 for (unit = 0; unit < MAX_DRIVES; ++unit) { 592 drive = &hwif->drives[unit]; 593 if (!drive->present) 594 continue; 595 spin_unlock_irq(&ide_lock); 596 device_unregister(&drive->gendev); 597 wait_for_completion(&drive->gendev_rel_comp); 598 spin_lock_irq(&ide_lock); 599 } 600 hwif->present = 0; 601 602 spin_unlock_irq(&ide_lock); 603 604 destroy_proc_ide_interface(hwif); 605 606 hwgroup = hwif->hwgroup; 607 /* 608 * free the irq if we were the only hwif using it 609 */ 610 g = hwgroup->hwif; 611 do { 612 if (g->irq == hwif->irq) 613 ++irq_count; 614 g = g->next; 615 } while (g != hwgroup->hwif); 616 if (irq_count == 1) 617 free_irq(hwif->irq, hwgroup); 618 619 spin_lock_irq(&ide_lock); 620 /* 621 * Note that we only release the standard ports, 622 * and do not even try to handle any extra ports 623 * allocated for weird IDE interface chipsets. 624 */ 625 ide_hwif_release_regions(hwif); 626 627 /* 628 * Remove us from the hwgroup, and free 629 * the hwgroup if we were the only member 630 */ 631 if (hwif->next == hwif) { 632 BUG_ON(hwgroup->hwif != hwif); 633 kfree(hwgroup); 634 } else { 635 /* There is another interface in hwgroup. 636 * Unlink us, and set hwgroup->drive and ->hwif to 637 * something sane. 638 */ 639 g = hwgroup->hwif; 640 while (g->next != hwif) 641 g = g->next; 642 g->next = hwif->next; 643 if (hwgroup->hwif == hwif) { 644 /* Chose a random hwif for hwgroup->hwif. 645 * It's guaranteed that there are no drives 646 * left in the hwgroup. 647 */ 648 BUG_ON(hwgroup->drive != NULL); 649 hwgroup->hwif = g; 650 } 651 BUG_ON(hwgroup->hwif == hwif); 652 } 653 654 /* More messed up locking ... */ 655 spin_unlock_irq(&ide_lock); 656 device_unregister(&hwif->gendev); 657 wait_for_completion(&hwif->gendev_rel_comp); 658 659 /* 660 * Remove us from the kernel's knowledge 661 */ 662 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); 663 kfree(hwif->sg_table); 664 unregister_blkdev(hwif->major, hwif->name); 665 spin_lock_irq(&ide_lock); 666 667 if (hwif->dma_base) { 668 (void) ide_release_dma(hwif); 669 670 hwif->dma_base = 0; 671 hwif->dma_master = 0; 672 hwif->dma_command = 0; 673 hwif->dma_vendor1 = 0; 674 hwif->dma_status = 0; 675 hwif->dma_vendor3 = 0; 676 hwif->dma_prdtable = 0; 677 } 678 679 /* copy original settings */ 680 tmp_hwif = *hwif; 681 682 /* restore hwif data to pristine status */ 683 init_hwif_data(hwif, index); 684 init_hwif_default(hwif, index); 685 686 ide_hwif_restore(hwif, &tmp_hwif); 687 688abort: 689 spin_unlock_irq(&ide_lock); 690 up(&ide_cfg_sem); 691} 692 693EXPORT_SYMBOL(ide_unregister); 694 695 696/** 697 * ide_setup_ports - set up IDE interface ports 698 * @hw: register descriptions 699 * @base: base register 700 * @offsets: table of register offsets 701 * @ctrl: control register 702 * @ack_irq: IRQ ack 703 * @irq: interrupt lie 704 * 705 * Setup hw_regs_t structure described by parameters. You 706 * may set up the hw structure yourself OR use this routine to 707 * do it for you. This is basically a helper 708 * 709 */ 710 711void ide_setup_ports ( hw_regs_t *hw, 712 unsigned long base, int *offsets, 713 unsigned long ctrl, unsigned long intr, 714 ide_ack_intr_t *ack_intr, 715/* 716 * ide_io_ops_t *iops, 717 */ 718 int irq) 719{ 720 int i; 721 722 memset(hw, 0, sizeof(hw_regs_t)); 723 for (i = 0; i < IDE_NR_PORTS; i++) { 724 if (offsets[i] == -1) { 725 switch(i) { 726 case IDE_CONTROL_OFFSET: 727 hw->io_ports[i] = ctrl; 728 break; 729#if defined(CONFIG_AMIGA) || defined(CONFIG_MAC) 730 case IDE_IRQ_OFFSET: 731 hw->io_ports[i] = intr; 732 break; 733#endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */ 734 default: 735 hw->io_ports[i] = 0; 736 break; 737 } 738 } else { 739 hw->io_ports[i] = base + offsets[i]; 740 } 741 } 742 hw->irq = irq; 743 hw->dma = NO_DMA; 744 hw->ack_intr = ack_intr; 745/* 746 * hw->iops = iops; 747 */ 748} 749 750/** 751 * ide_register_hw_with_fixup - register IDE interface 752 * @hw: hardware registers 753 * @hwifp: pointer to returned hwif 754 * @fixup: fixup function 755 * 756 * Register an IDE interface, specifying exactly the registers etc. 757 * Set init=1 iff calling before probes have taken place. 758 * 759 * Returns -1 on error. 760 */ 761 762int ide_register_hw_with_fixup(hw_regs_t *hw, ide_hwif_t **hwifp, void(*fixup)(ide_hwif_t *hwif)) 763{ 764 int index, retry = 1; 765 ide_hwif_t *hwif; 766 767 do { 768 for (index = 0; index < MAX_HWIFS; ++index) { 769 hwif = &ide_hwifs[index]; 770 if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET]) 771 goto found; 772 } 773 for (index = 0; index < MAX_HWIFS; ++index) { 774 hwif = &ide_hwifs[index]; 775 if (hwif->hold) 776 continue; 777 if ((!hwif->present && !hwif->mate && !initializing) || 778 (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing)) 779 goto found; 780 } 781 for (index = 0; index < MAX_HWIFS; index++) 782 ide_unregister(index); 783 } while (retry--); 784 return -1; 785found: 786 if (hwif->present) 787 ide_unregister(index); 788 else if (!hwif->hold) { 789 init_hwif_data(hwif, index); 790 init_hwif_default(hwif, index); 791 } 792 if (hwif->present) 793 return -1; 794 memcpy(&hwif->hw, hw, sizeof(*hw)); 795 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports)); 796 hwif->irq = hw->irq; 797 hwif->noprobe = 0; 798 hwif->chipset = hw->chipset; 799 hwif->gendev.parent = hw->dev; 800 801 if (!initializing) { 802 probe_hwif_init_with_fixup(hwif, fixup); 803 create_proc_ide_interfaces(); 804 } 805 806 if (hwifp) 807 *hwifp = hwif; 808 809 return (initializing || hwif->present) ? index : -1; 810} 811 812EXPORT_SYMBOL(ide_register_hw_with_fixup); 813 814int ide_register_hw(hw_regs_t *hw, ide_hwif_t **hwifp) 815{ 816 return ide_register_hw_with_fixup(hw, hwifp, NULL); 817} 818 819EXPORT_SYMBOL(ide_register_hw); 820 821/* 822 * Locks for IDE setting functionality 823 */ 824 825DECLARE_MUTEX(ide_setting_sem); 826 827/** 828 * __ide_add_setting - add an ide setting option 829 * @drive: drive to use 830 * @name: setting name 831 * @rw: true if the function is read write 832 * @read_ioctl: function to call on read 833 * @write_ioctl: function to call on write 834 * @data_type: type of data 835 * @min: range minimum 836 * @max: range maximum 837 * @mul_factor: multiplication scale 838 * @div_factor: divison scale 839 * @data: private data field 840 * @set: setting 841 * @auto_remove: setting auto removal flag 842 * 843 * Removes the setting named from the device if it is present. 844 * The function takes the settings_lock to protect against 845 * parallel changes. This function must not be called from IRQ 846 * context. Returns 0 on success or -1 on failure. 847 * 848 * BUGS: This code is seriously over-engineered. There is also 849 * magic about how the driver specific features are setup. If 850 * a driver is attached we assume the driver settings are auto 851 * remove. 852 */ 853 854static 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) 855{ 856 ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL; 857 858 down(&ide_setting_sem); 859 while ((*p) && strcmp((*p)->name, name) < 0) 860 p = &((*p)->next); 861 if ((setting = kzalloc(sizeof(*setting), GFP_KERNEL)) == NULL) 862 goto abort; 863 if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL) 864 goto abort; 865 strcpy(setting->name, name); 866 setting->rw = rw; 867 setting->read_ioctl = read_ioctl; 868 setting->write_ioctl = write_ioctl; 869 setting->data_type = data_type; 870 setting->min = min; 871 setting->max = max; 872 setting->mul_factor = mul_factor; 873 setting->div_factor = div_factor; 874 setting->data = data; 875 setting->set = set; 876 877 setting->next = *p; 878 if (auto_remove) 879 setting->auto_remove = 1; 880 *p = setting; 881 up(&ide_setting_sem); 882 return 0; 883abort: 884 up(&ide_setting_sem); 885 kfree(setting); 886 return -1; 887} 888 889int 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) 890{ 891 return __ide_add_setting(drive, name, rw, read_ioctl, write_ioctl, data_type, min, max, mul_factor, div_factor, data, set, 1); 892} 893 894EXPORT_SYMBOL(ide_add_setting); 895 896/** 897 * __ide_remove_setting - remove an ide setting option 898 * @drive: drive to use 899 * @name: setting name 900 * 901 * Removes the setting named from the device if it is present. 902 * The caller must hold the setting semaphore. 903 */ 904 905static void __ide_remove_setting (ide_drive_t *drive, char *name) 906{ 907 ide_settings_t **p, *setting; 908 909 p = (ide_settings_t **) &drive->settings; 910 911 while ((*p) && strcmp((*p)->name, name)) 912 p = &((*p)->next); 913 if ((setting = (*p)) == NULL) 914 return; 915 916 (*p) = setting->next; 917 918 kfree(setting->name); 919 kfree(setting); 920} 921 922/** 923 * ide_find_setting_by_ioctl - find a drive specific ioctl 924 * @drive: drive to scan 925 * @cmd: ioctl command to handle 926 * 927 * Scan's the device setting table for a matching entry and returns 928 * this or NULL if no entry is found. The caller must hold the 929 * setting semaphore 930 */ 931 932static ide_settings_t *ide_find_setting_by_ioctl (ide_drive_t *drive, int cmd) 933{ 934 ide_settings_t *setting = drive->settings; 935 936 while (setting) { 937 if (setting->read_ioctl == cmd || setting->write_ioctl == cmd) 938 break; 939 setting = setting->next; 940 } 941 942 return setting; 943} 944 945/** 946 * ide_find_setting_by_name - find a drive specific setting 947 * @drive: drive to scan 948 * @name: setting name 949 * 950 * Scan's the device setting table for a matching entry and returns 951 * this or NULL if no entry is found. The caller must hold the 952 * setting semaphore 953 */ 954 955ide_settings_t *ide_find_setting_by_name (ide_drive_t *drive, char *name) 956{ 957 ide_settings_t *setting = drive->settings; 958 959 while (setting) { 960 if (strcmp(setting->name, name) == 0) 961 break; 962 setting = setting->next; 963 } 964 return setting; 965} 966 967/** 968 * auto_remove_settings - remove driver specific settings 969 * @drive: drive 970 * 971 * Automatically remove all the driver specific settings for this 972 * drive. This function may sleep and must not be called from IRQ 973 * context. The caller must hold ide_setting_sem. 974 */ 975 976static void auto_remove_settings (ide_drive_t *drive) 977{ 978 ide_settings_t *setting; 979repeat: 980 setting = drive->settings; 981 while (setting) { 982 if (setting->auto_remove) { 983 __ide_remove_setting(drive, setting->name); 984 goto repeat; 985 } 986 setting = setting->next; 987 } 988} 989 990/** 991 * ide_read_setting - read an IDE setting 992 * @drive: drive to read from 993 * @setting: drive setting 994 * 995 * Read a drive setting and return the value. The caller 996 * must hold the ide_setting_sem when making this call. 997 * 998 * BUGS: the data return and error are the same return value 999 * so an error -EINVAL and true return of the same value cannot 1000 * be told apart 1001 */ 1002 1003int ide_read_setting (ide_drive_t *drive, ide_settings_t *setting) 1004{ 1005 int val = -EINVAL; 1006 unsigned long flags; 1007 1008 if ((setting->rw & SETTING_READ)) { 1009 spin_lock_irqsave(&ide_lock, flags); 1010 switch(setting->data_type) { 1011 case TYPE_BYTE: 1012 val = *((u8 *) setting->data); 1013 break; 1014 case TYPE_SHORT: 1015 val = *((u16 *) setting->data); 1016 break; 1017 case TYPE_INT: 1018 case TYPE_INTA: 1019 val = *((u32 *) setting->data); 1020 break; 1021 } 1022 spin_unlock_irqrestore(&ide_lock, flags); 1023 } 1024 return val; 1025} 1026 1027/** 1028 * ide_spin_wait_hwgroup - wait for group 1029 * @drive: drive in the group 1030 * 1031 * Wait for an IDE device group to go non busy and then return 1032 * holding the ide_lock which guards the hwgroup->busy status 1033 * and right to use it. 1034 */ 1035 1036int ide_spin_wait_hwgroup (ide_drive_t *drive) 1037{ 1038 ide_hwgroup_t *hwgroup = HWGROUP(drive); 1039 unsigned long timeout = jiffies + (3 * HZ); 1040 1041 spin_lock_irq(&ide_lock); 1042 1043 while (hwgroup->busy) { 1044 unsigned long lflags; 1045 spin_unlock_irq(&ide_lock); 1046 local_irq_set(lflags); 1047 if (time_after(jiffies, timeout)) { 1048 local_irq_restore(lflags); 1049 printk(KERN_ERR "%s: channel busy\n", drive->name); 1050 return -EBUSY; 1051 } 1052 local_irq_restore(lflags); 1053 spin_lock_irq(&ide_lock); 1054 } 1055 return 0; 1056} 1057 1058EXPORT_SYMBOL(ide_spin_wait_hwgroup); 1059 1060/** 1061 * ide_write_setting - read an IDE setting 1062 * @drive: drive to read from 1063 * @setting: drive setting 1064 * @val: value 1065 * 1066 * Write a drive setting if it is possible. The caller 1067 * must hold the ide_setting_sem when making this call. 1068 * 1069 * BUGS: the data return and error are the same return value 1070 * so an error -EINVAL and true return of the same value cannot 1071 * be told apart 1072 * 1073 * FIXME: This should be changed to enqueue a special request 1074 * to the driver to change settings, and then wait on a sema for completion. 1075 * The current scheme of polling is kludgy, though safe enough. 1076 */ 1077 1078int ide_write_setting (ide_drive_t *drive, ide_settings_t *setting, int val) 1079{ 1080 int i; 1081 u32 *p; 1082 1083 if (!capable(CAP_SYS_ADMIN)) 1084 return -EACCES; 1085 if (!(setting->rw & SETTING_WRITE)) 1086 return -EPERM; 1087 if (val < setting->min || val > setting->max) 1088 return -EINVAL; 1089 if (setting->set) 1090 return setting->set(drive, val); 1091 if (ide_spin_wait_hwgroup(drive)) 1092 return -EBUSY; 1093 switch (setting->data_type) { 1094 case TYPE_BYTE: 1095 *((u8 *) setting->data) = val; 1096 break; 1097 case TYPE_SHORT: 1098 *((u16 *) setting->data) = val; 1099 break; 1100 case TYPE_INT: 1101 *((u32 *) setting->data) = val; 1102 break; 1103 case TYPE_INTA: 1104 p = (u32 *) setting->data; 1105 for (i = 0; i < 1 << PARTN_BITS; i++, p++) 1106 *p = val; 1107 break; 1108 } 1109 spin_unlock_irq(&ide_lock); 1110 return 0; 1111} 1112 1113static int set_io_32bit(ide_drive_t *drive, int arg) 1114{ 1115 drive->io_32bit = arg; 1116#ifdef CONFIG_BLK_DEV_DTC2278 1117 if (HWIF(drive)->chipset == ide_dtc2278) 1118 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg; 1119#endif /* CONFIG_BLK_DEV_DTC2278 */ 1120 return 0; 1121} 1122 1123static int set_using_dma (ide_drive_t *drive, int arg) 1124{ 1125#ifdef CONFIG_BLK_DEV_IDEDMA 1126 if (!drive->id || !(drive->id->capability & 1)) 1127 return -EPERM; 1128 if (HWIF(drive)->ide_dma_check == NULL) 1129 return -EPERM; 1130 if (arg) { 1131 if (HWIF(drive)->ide_dma_check(drive)) return -EIO; 1132 if (HWIF(drive)->ide_dma_on(drive)) return -EIO; 1133 } else { 1134 if (__ide_dma_off(drive)) 1135 return -EIO; 1136 } 1137 return 0; 1138#else 1139 return -EPERM; 1140#endif 1141} 1142 1143static int set_pio_mode (ide_drive_t *drive, int arg) 1144{ 1145 struct request rq; 1146 1147 if (!HWIF(drive)->tuneproc) 1148 return -ENOSYS; 1149 if (drive->special.b.set_tune) 1150 return -EBUSY; 1151 ide_init_drive_cmd(&rq); 1152 drive->tune_req = (u8) arg; 1153 drive->special.b.set_tune = 1; 1154 (void) ide_do_drive_cmd(drive, &rq, ide_wait); 1155 return 0; 1156} 1157 1158static int set_xfer_rate (ide_drive_t *drive, int arg) 1159{ 1160 int err = ide_wait_cmd(drive, 1161 WIN_SETFEATURES, (u8) arg, 1162 SETFEATURES_XFER, 0, NULL); 1163 1164 if (!err && arg) { 1165 ide_set_xfer_rate(drive, (u8) arg); 1166 ide_driveid_update(drive); 1167 } 1168 return err; 1169} 1170 1171/** 1172 * ide_add_generic_settings - generic ide settings 1173 * @drive: drive being configured 1174 * 1175 * Add the generic parts of the system settings to the /proc files and 1176 * ioctls for this IDE device. The caller must not be holding the 1177 * ide_setting_sem. 1178 */ 1179 1180void ide_add_generic_settings (ide_drive_t *drive) 1181{ 1182/* 1183 * drive setting name read/write access read ioctl write ioctl data type min max mul_factor div_factor data pointer set function 1184 */ 1185 __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); 1186 __ide_add_setting(drive, "keepsettings", SETTING_RW, HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL, 0); 1187 __ide_add_setting(drive, "nice1", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0); 1188 __ide_add_setting(drive, "pio_mode", SETTING_WRITE, -1, HDIO_SET_PIO_MODE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0); 1189 __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); 1190 __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); 1191 __ide_add_setting(drive, "init_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0); 1192 __ide_add_setting(drive, "current_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0); 1193 __ide_add_setting(drive, "number", SETTING_RW, -1, -1, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0); 1194} 1195 1196/** 1197 * system_bus_clock - clock guess 1198 * 1199 * External version of the bus clock guess used by very old IDE drivers 1200 * for things like VLB timings. Should not be used. 1201 */ 1202 1203int system_bus_clock (void) 1204{ 1205 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed )); 1206} 1207 1208EXPORT_SYMBOL(system_bus_clock); 1209 1210static int generic_ide_suspend(struct device *dev, pm_message_t state) 1211{ 1212 ide_drive_t *drive = dev->driver_data; 1213 struct request rq; 1214 struct request_pm_state rqpm; 1215 ide_task_t args; 1216 1217 memset(&rq, 0, sizeof(rq)); 1218 memset(&rqpm, 0, sizeof(rqpm)); 1219 memset(&args, 0, sizeof(args)); 1220 rq.flags = REQ_PM_SUSPEND; 1221 rq.special = &args; 1222 rq.end_io_data = &rqpm; 1223 rqpm.pm_step = ide_pm_state_start_suspend; 1224 rqpm.pm_state = state.event; 1225 1226 return ide_do_drive_cmd(drive, &rq, ide_wait); 1227} 1228 1229static int generic_ide_resume(struct device *dev) 1230{ 1231 ide_drive_t *drive = dev->driver_data; 1232 struct request rq; 1233 struct request_pm_state rqpm; 1234 ide_task_t args; 1235 1236 memset(&rq, 0, sizeof(rq)); 1237 memset(&rqpm, 0, sizeof(rqpm)); 1238 memset(&args, 0, sizeof(args)); 1239 rq.flags = REQ_PM_RESUME; 1240 rq.special = &args; 1241 rq.end_io_data = &rqpm; 1242 rqpm.pm_step = ide_pm_state_start_resume; 1243 rqpm.pm_state = PM_EVENT_ON; 1244 1245 return ide_do_drive_cmd(drive, &rq, ide_head_wait); 1246} 1247 1248int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, 1249 unsigned int cmd, unsigned long arg) 1250{ 1251 ide_settings_t *setting; 1252 ide_driver_t *drv; 1253 int err = 0; 1254 void __user *p = (void __user *)arg; 1255 1256 down(&ide_setting_sem); 1257 if ((setting = ide_find_setting_by_ioctl(drive, cmd)) != NULL) { 1258 if (cmd == setting->read_ioctl) { 1259 err = ide_read_setting(drive, setting); 1260 up(&ide_setting_sem); 1261 return err >= 0 ? put_user(err, (long __user *)arg) : err; 1262 } else { 1263 if (bdev != bdev->bd_contains) 1264 err = -EINVAL; 1265 else 1266 err = ide_write_setting(drive, setting, arg); 1267 up(&ide_setting_sem); 1268 return err; 1269 } 1270 } 1271 up(&ide_setting_sem); 1272 1273 switch (cmd) { 1274 case HDIO_OBSOLETE_IDENTITY: 1275 case HDIO_GET_IDENTITY: 1276 if (bdev != bdev->bd_contains) 1277 return -EINVAL; 1278 if (drive->id_read == 0) 1279 return -ENOMSG; 1280 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) 1281 return -EFAULT; 1282 return 0; 1283 1284 case HDIO_GET_NICE: 1285 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | 1286 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | 1287 drive->nice0 << IDE_NICE_0 | 1288 drive->nice1 << IDE_NICE_1 | 1289 drive->nice2 << IDE_NICE_2, 1290 (long __user *) arg); 1291 1292#ifdef CONFIG_IDE_TASK_IOCTL 1293 case HDIO_DRIVE_TASKFILE: 1294 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) 1295 return -EACCES; 1296 switch(drive->media) { 1297 case ide_disk: 1298 return ide_taskfile_ioctl(drive, cmd, arg); 1299 default: 1300 return -ENOMSG; 1301 } 1302#endif /* CONFIG_IDE_TASK_IOCTL */ 1303 1304 case HDIO_DRIVE_CMD: 1305 if (!capable(CAP_SYS_RAWIO)) 1306 return -EACCES; 1307 return ide_cmd_ioctl(drive, cmd, arg); 1308 1309 case HDIO_DRIVE_TASK: 1310 if (!capable(CAP_SYS_RAWIO)) 1311 return -EACCES; 1312 return ide_task_ioctl(drive, cmd, arg); 1313 1314 case HDIO_SCAN_HWIF: 1315 { 1316 hw_regs_t hw; 1317 int args[3]; 1318 if (!capable(CAP_SYS_RAWIO)) return -EACCES; 1319 if (copy_from_user(args, p, 3 * sizeof(int))) 1320 return -EFAULT; 1321 memset(&hw, 0, sizeof(hw)); 1322 ide_init_hwif_ports(&hw, (unsigned long) args[0], 1323 (unsigned long) args[1], NULL); 1324 hw.irq = args[2]; 1325 if (ide_register_hw(&hw, NULL) == -1) 1326 return -EIO; 1327 return 0; 1328 } 1329 case HDIO_UNREGISTER_HWIF: 1330 if (!capable(CAP_SYS_RAWIO)) return -EACCES; 1331 /* (arg > MAX_HWIFS) checked in function */ 1332 ide_unregister(arg); 1333 return 0; 1334 case HDIO_SET_NICE: 1335 if (!capable(CAP_SYS_ADMIN)) return -EACCES; 1336 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) 1337 return -EPERM; 1338 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; 1339 drv = *(ide_driver_t **)bdev->bd_disk->private_data; 1340 if (drive->dsc_overlap && !drv->supports_dsc_overlap) { 1341 drive->dsc_overlap = 0; 1342 return -EPERM; 1343 } 1344 drive->nice1 = (arg >> IDE_NICE_1) & 1; 1345 return 0; 1346 case HDIO_DRIVE_RESET: 1347 { 1348 unsigned long flags; 1349 if (!capable(CAP_SYS_ADMIN)) return -EACCES; 1350 1351 /* 1352 * Abort the current command on the 1353 * group if there is one, taking 1354 * care not to allow anything else 1355 * to be queued and to die on the 1356 * spot if we miss one somehow 1357 */ 1358 1359 spin_lock_irqsave(&ide_lock, flags); 1360 1361 ide_abort(drive, "drive reset"); 1362 1363 BUG_ON(HWGROUP(drive)->handler); 1364 1365 /* Ensure nothing gets queued after we 1366 drop the lock. Reset will clear the busy */ 1367 1368 HWGROUP(drive)->busy = 1; 1369 spin_unlock_irqrestore(&ide_lock, flags); 1370 (void) ide_do_reset(drive); 1371 1372 return 0; 1373 } 1374 1375 case CDROMEJECT: 1376 case CDROMCLOSETRAY: 1377 return scsi_cmd_ioctl(file, bdev->bd_disk, cmd, p); 1378 1379 case HDIO_GET_BUSSTATE: 1380 if (!capable(CAP_SYS_ADMIN)) 1381 return -EACCES; 1382 if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) 1383 return -EFAULT; 1384 return 0; 1385 1386 case HDIO_SET_BUSSTATE: 1387 if (!capable(CAP_SYS_ADMIN)) 1388 return -EACCES; 1389 if (HWIF(drive)->busproc) 1390 return HWIF(drive)->busproc(drive, (int)arg); 1391 return -EOPNOTSUPP; 1392 default: 1393 return -EINVAL; 1394 } 1395} 1396 1397EXPORT_SYMBOL(generic_ide_ioctl); 1398 1399/* 1400 * stridx() returns the offset of c within s, 1401 * or -1 if c is '\0' or not found within s. 1402 */ 1403static int __init stridx (const char *s, char c) 1404{ 1405 char *i = strchr(s, c); 1406 return (i && c) ? i - s : -1; 1407} 1408 1409/* 1410 * match_parm() does parsing for ide_setup(): 1411 * 1412 * 1. the first char of s must be '='. 1413 * 2. if the remainder matches one of the supplied keywords, 1414 * the index (1 based) of the keyword is negated and returned. 1415 * 3. if the remainder is a series of no more than max_vals numbers 1416 * separated by commas, the numbers are saved in vals[] and a 1417 * count of how many were saved is returned. Base10 is assumed, 1418 * and base16 is allowed when prefixed with "0x". 1419 * 4. otherwise, zero is returned. 1420 */ 1421static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) 1422{ 1423 static const char *decimal = "0123456789"; 1424 static const char *hex = "0123456789abcdef"; 1425 int i, n; 1426 1427 if (*s++ == '=') { 1428 /* 1429 * Try matching against the supplied keywords, 1430 * and return -(index+1) if we match one 1431 */ 1432 if (keywords != NULL) { 1433 for (i = 0; *keywords != NULL; ++i) { 1434 if (!strcmp(s, *keywords++)) 1435 return -(i+1); 1436 } 1437 } 1438 /* 1439 * Look for a series of no more than "max_vals" 1440 * numeric values separated by commas, in base10, 1441 * or base16 when prefixed with "0x". 1442 * Return a count of how many were found. 1443 */ 1444 for (n = 0; (i = stridx(decimal, *s)) >= 0;) { 1445 vals[n] = i; 1446 while ((i = stridx(decimal, *++s)) >= 0) 1447 vals[n] = (vals[n] * 10) + i; 1448 if (*s == 'x' && !vals[n]) { 1449 while ((i = stridx(hex, *++s)) >= 0) 1450 vals[n] = (vals[n] * 0x10) + i; 1451 } 1452 if (++n == max_vals) 1453 break; 1454 if (*s == ',' || *s == ';') 1455 ++s; 1456 } 1457 if (!*s) 1458 return n; 1459 } 1460 return 0; /* zero = nothing matched */ 1461} 1462 1463#ifdef CONFIG_BLK_DEV_ALI14XX 1464static int __initdata probe_ali14xx; 1465extern int ali14xx_init(void); 1466#endif 1467#ifdef CONFIG_BLK_DEV_UMC8672 1468static int __initdata probe_umc8672; 1469extern int umc8672_init(void); 1470#endif 1471#ifdef CONFIG_BLK_DEV_DTC2278 1472static int __initdata probe_dtc2278; 1473extern int dtc2278_init(void); 1474#endif 1475#ifdef CONFIG_BLK_DEV_HT6560B 1476static int __initdata probe_ht6560b; 1477extern int ht6560b_init(void); 1478#endif 1479#ifdef CONFIG_BLK_DEV_QD65XX 1480static int __initdata probe_qd65xx; 1481extern int qd65xx_init(void); 1482#endif 1483 1484static int __initdata is_chipset_set[MAX_HWIFS]; 1485 1486/* 1487 * ide_setup() gets called VERY EARLY during initialization, 1488 * to handle kernel "command line" strings beginning with "hdx=" or "ide". 1489 * 1490 * Remember to update Documentation/ide.txt if you change something here. 1491 */ 1492static int __init ide_setup(char *s) 1493{ 1494 int i, vals[3]; 1495 ide_hwif_t *hwif; 1496 ide_drive_t *drive; 1497 unsigned int hw, unit; 1498 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); 1499 const char max_hwif = '0' + (MAX_HWIFS - 1); 1500 1501 1502 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ 1503 return 0; /* driver and not us */ 1504 1505 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) 1506 return 0; 1507 1508 printk(KERN_INFO "ide_setup: %s", s); 1509 init_ide_data (); 1510 1511#ifdef CONFIG_BLK_DEV_IDEDOUBLER 1512 if (!strcmp(s, "ide=doubler")) { 1513 extern int ide_doubler; 1514 1515 printk(" : Enabled support for IDE doublers\n"); 1516 ide_doubler = 1; 1517 return 1; 1518 } 1519#endif /* CONFIG_BLK_DEV_IDEDOUBLER */ 1520 1521 if (!strcmp(s, "ide=nodma")) { 1522 printk(" : Prevented DMA\n"); 1523 noautodma = 1; 1524 return 1; 1525 } 1526 1527#ifdef CONFIG_BLK_DEV_IDEPCI 1528 if (!strcmp(s, "ide=reverse")) { 1529 ide_scan_direction = 1; 1530 printk(" : Enabled support for IDE inverse scan order.\n"); 1531 return 1; 1532 } 1533#endif /* CONFIG_BLK_DEV_IDEPCI */ 1534 1535 /* 1536 * Look for drive options: "hdx=" 1537 */ 1538 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { 1539 const char *hd_words[] = { 1540 "none", "noprobe", "nowerr", "cdrom", "serialize", 1541 "autotune", "noautotune", "minus8", "swapdata", "bswap", 1542 "minus11", "remap", "remap63", "scsi", NULL }; 1543 unit = s[2] - 'a'; 1544 hw = unit / MAX_DRIVES; 1545 unit = unit % MAX_DRIVES; 1546 hwif = &ide_hwifs[hw]; 1547 drive = &hwif->drives[unit]; 1548 if (strncmp(s + 4, "ide-", 4) == 0) { 1549 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); 1550 goto done; 1551 } 1552 switch (match_parm(&s[3], hd_words, vals, 3)) { 1553 case -1: /* "none" */ 1554 case -2: /* "noprobe" */ 1555 drive->noprobe = 1; 1556 goto done; 1557 case -3: /* "nowerr" */ 1558 drive->bad_wstat = BAD_R_STAT; 1559 hwif->noprobe = 0; 1560 goto done; 1561 case -4: /* "cdrom" */ 1562 drive->present = 1; 1563 drive->media = ide_cdrom; 1564 /* an ATAPI device ignores DRDY */ 1565 drive->ready_stat = 0; 1566 hwif->noprobe = 0; 1567 goto done; 1568 case -5: /* "serialize" */ 1569 printk(" -- USE \"ide%d=serialize\" INSTEAD", hw); 1570 goto do_serialize; 1571 case -6: /* "autotune" */ 1572 drive->autotune = IDE_TUNE_AUTO; 1573 goto obsolete_option; 1574 case -7: /* "noautotune" */ 1575 drive->autotune = IDE_TUNE_NOAUTO; 1576 goto obsolete_option; 1577 case -9: /* "swapdata" */ 1578 case -10: /* "bswap" */ 1579 drive->bswap = 1; 1580 goto done; 1581 case -12: /* "remap" */ 1582 drive->remap_0_to_1 = 1; 1583 goto done; 1584 case -13: /* "remap63" */ 1585 drive->sect0 = 63; 1586 goto done; 1587 case -14: /* "scsi" */ 1588 drive->scsi = 1; 1589 goto done; 1590 case 3: /* cyl,head,sect */ 1591 drive->media = ide_disk; 1592 drive->ready_stat = READY_STAT; 1593 drive->cyl = drive->bios_cyl = vals[0]; 1594 drive->head = drive->bios_head = vals[1]; 1595 drive->sect = drive->bios_sect = vals[2]; 1596 drive->present = 1; 1597 drive->forced_geom = 1; 1598 hwif->noprobe = 0; 1599 goto done; 1600 default: 1601 goto bad_option; 1602 } 1603 } 1604 1605 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') 1606 goto bad_option; 1607 /* 1608 * Look for bus speed option: "idebus=" 1609 */ 1610 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { 1611 if (match_parm(&s[6], NULL, vals, 1) != 1) 1612 goto bad_option; 1613 if (vals[0] >= 20 && vals[0] <= 66) { 1614 idebus_parameter = vals[0]; 1615 } else 1616 printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); 1617 goto done; 1618 } 1619 /* 1620 * Look for interface options: "idex=" 1621 */ 1622 if (s[3] >= '0' && s[3] <= max_hwif) { 1623 /* 1624 * Be VERY CAREFUL changing this: note hardcoded indexes below 1625 * (-8, -9, -10) are reserved to ease the hardcoding. 1626 */ 1627 static const char *ide_words[] = { 1628 "noprobe", "serialize", "autotune", "noautotune", 1629 "reset", "dma", "ata66", "minus8", "minus9", 1630 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", 1631 "dtc2278", "umc8672", "ali14xx", NULL }; 1632 hw = s[3] - '0'; 1633 hwif = &ide_hwifs[hw]; 1634 i = match_parm(&s[4], ide_words, vals, 3); 1635 1636 /* 1637 * Cryptic check to ensure chipset not already set for hwif. 1638 * Note: we can't depend on hwif->chipset here. 1639 */ 1640 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { 1641 /* chipset already specified */ 1642 if (is_chipset_set[hw]) 1643 goto bad_option; 1644 if (i > -18 && i <= -11) { 1645 /* these drivers are for "ide0=" only */ 1646 if (hw != 0) 1647 goto bad_hwif; 1648 /* chipset already specified for 2nd port */ 1649 if (is_chipset_set[hw+1]) 1650 goto bad_option; 1651 } 1652 is_chipset_set[hw] = 1; 1653 printk("\n"); 1654 } 1655 1656 switch (i) { 1657#ifdef CONFIG_BLK_DEV_ALI14XX 1658 case -17: /* "ali14xx" */ 1659 probe_ali14xx = 1; 1660 goto done; 1661#endif 1662#ifdef CONFIG_BLK_DEV_UMC8672 1663 case -16: /* "umc8672" */ 1664 probe_umc8672 = 1; 1665 goto done; 1666#endif 1667#ifdef CONFIG_BLK_DEV_DTC2278 1668 case -15: /* "dtc2278" */ 1669 probe_dtc2278 = 1; 1670 goto done; 1671#endif 1672#ifdef CONFIG_BLK_DEV_CMD640 1673 case -14: /* "cmd640_vlb" */ 1674 { 1675 extern int cmd640_vlb; /* flag for cmd640.c */ 1676 cmd640_vlb = 1; 1677 goto done; 1678 } 1679#endif 1680#ifdef CONFIG_BLK_DEV_HT6560B 1681 case -13: /* "ht6560b" */ 1682 probe_ht6560b = 1; 1683 goto done; 1684#endif 1685#ifdef CONFIG_BLK_DEV_QD65XX 1686 case -12: /* "qd65xx" */ 1687 probe_qd65xx = 1; 1688 goto done; 1689#endif 1690#ifdef CONFIG_BLK_DEV_4DRIVES 1691 case -11: /* "four" drives on one set of ports */ 1692 { 1693 ide_hwif_t *mate = &ide_hwifs[hw^1]; 1694 mate->drives[0].select.all ^= 0x20; 1695 mate->drives[1].select.all ^= 0x20; 1696 hwif->chipset = mate->chipset = ide_4drives; 1697 mate->irq = hwif->irq; 1698 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); 1699 goto do_serialize; 1700 } 1701#endif /* CONFIG_BLK_DEV_4DRIVES */ 1702 case -10: /* minus10 */ 1703 case -9: /* minus9 */ 1704 case -8: /* minus8 */ 1705 goto bad_option; 1706 case -7: /* ata66 */ 1707#ifdef CONFIG_BLK_DEV_IDEPCI 1708 hwif->udma_four = 1; 1709 goto obsolete_option; 1710#else 1711 goto bad_hwif; 1712#endif 1713 case -6: /* dma */ 1714 hwif->autodma = 1; 1715 goto obsolete_option; 1716 case -5: /* "reset" */ 1717 hwif->reset = 1; 1718 goto obsolete_option; 1719 case -4: /* "noautotune" */ 1720 hwif->drives[0].autotune = IDE_TUNE_NOAUTO; 1721 hwif->drives[1].autotune = IDE_TUNE_NOAUTO; 1722 goto obsolete_option; 1723 case -3: /* "autotune" */ 1724 hwif->drives[0].autotune = IDE_TUNE_AUTO; 1725 hwif->drives[1].autotune = IDE_TUNE_AUTO; 1726 goto obsolete_option; 1727 case -2: /* "serialize" */ 1728 do_serialize: 1729 hwif->mate = &ide_hwifs[hw^1]; 1730 hwif->mate->mate = hwif; 1731 hwif->serialized = hwif->mate->serialized = 1; 1732 goto obsolete_option; 1733 1734 case -1: /* "noprobe" */ 1735 hwif->noprobe = 1; 1736 goto done; 1737 1738 case 1: /* base */ 1739 vals[1] = vals[0] + 0x206; /* default ctl */ 1740 case 2: /* base,ctl */ 1741 vals[2] = 0; /* default irq = probe for it */ 1742 case 3: /* base,ctl,irq */ 1743 hwif->hw.irq = vals[2]; 1744 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq); 1745 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports)); 1746 hwif->irq = vals[2]; 1747 hwif->noprobe = 0; 1748 hwif->chipset = ide_forced; 1749 goto obsolete_option; 1750 1751 case 0: goto bad_option; 1752 default: 1753 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); 1754 return 1; 1755 } 1756 } 1757bad_option: 1758 printk(" -- BAD OPTION\n"); 1759 return 1; 1760obsolete_option: 1761 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); 1762 return 1; 1763bad_hwif: 1764 printk("-- NOT SUPPORTED ON ide%d", hw); 1765done: 1766 printk("\n"); 1767 return 1; 1768} 1769 1770extern void pnpide_init(void); 1771extern void h8300_ide_init(void); 1772 1773/* 1774 * probe_for_hwifs() finds/initializes "known" IDE interfaces 1775 */ 1776static void __init probe_for_hwifs (void) 1777{ 1778#ifdef CONFIG_BLK_DEV_IDEPCI 1779 ide_scan_pcibus(ide_scan_direction); 1780#endif /* CONFIG_BLK_DEV_IDEPCI */ 1781 1782#ifdef CONFIG_ETRAX_IDE 1783 { 1784 extern void init_e100_ide(void); 1785 init_e100_ide(); 1786 } 1787#endif /* CONFIG_ETRAX_IDE */ 1788#ifdef CONFIG_BLK_DEV_CMD640 1789 { 1790 extern void ide_probe_for_cmd640x(void); 1791 ide_probe_for_cmd640x(); 1792 } 1793#endif /* CONFIG_BLK_DEV_CMD640 */ 1794#ifdef CONFIG_BLK_DEV_IDE_PMAC 1795 { 1796 extern void pmac_ide_probe(void); 1797 pmac_ide_probe(); 1798 } 1799#endif /* CONFIG_BLK_DEV_IDE_PMAC */ 1800#ifdef CONFIG_BLK_DEV_GAYLE 1801 { 1802 extern void gayle_init(void); 1803 gayle_init(); 1804 } 1805#endif /* CONFIG_BLK_DEV_GAYLE */ 1806#ifdef CONFIG_BLK_DEV_FALCON_IDE 1807 { 1808 extern void falconide_init(void); 1809 falconide_init(); 1810 } 1811#endif /* CONFIG_BLK_DEV_FALCON_IDE */ 1812#ifdef CONFIG_BLK_DEV_MAC_IDE 1813 { 1814 extern void macide_init(void); 1815 macide_init(); 1816 } 1817#endif /* CONFIG_BLK_DEV_MAC_IDE */ 1818#ifdef CONFIG_BLK_DEV_Q40IDE 1819 { 1820 extern void q40ide_init(void); 1821 q40ide_init(); 1822 } 1823#endif /* CONFIG_BLK_DEV_Q40IDE */ 1824#ifdef CONFIG_BLK_DEV_BUDDHA 1825 { 1826 extern void buddha_init(void); 1827 buddha_init(); 1828 } 1829#endif /* CONFIG_BLK_DEV_BUDDHA */ 1830#ifdef CONFIG_BLK_DEV_IDEPNP 1831 pnpide_init(); 1832#endif 1833#ifdef CONFIG_H8300 1834 h8300_ide_init(); 1835#endif 1836} 1837 1838void ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver) 1839{ 1840#ifdef CONFIG_PROC_FS 1841 ide_add_proc_entries(drive->proc, driver->proc, drive); 1842#endif 1843} 1844 1845EXPORT_SYMBOL(ide_register_subdriver); 1846 1847/** 1848 * ide_unregister_subdriver - disconnect drive from driver 1849 * @drive: drive to unplug 1850 * @driver: driver 1851 * 1852 * Disconnect a drive from the driver it was attached to and then 1853 * clean up the various proc files and other objects attached to it. 1854 * 1855 * Takes ide_setting_sem and ide_lock. 1856 * Caller must hold none of the locks. 1857 */ 1858 1859void ide_unregister_subdriver(ide_drive_t *drive, ide_driver_t *driver) 1860{ 1861 unsigned long flags; 1862 1863 down(&ide_setting_sem); 1864 spin_lock_irqsave(&ide_lock, flags); 1865#ifdef CONFIG_PROC_FS 1866 ide_remove_proc_entries(drive->proc, driver->proc); 1867#endif 1868 auto_remove_settings(drive); 1869 spin_unlock_irqrestore(&ide_lock, flags); 1870 up(&ide_setting_sem); 1871} 1872 1873EXPORT_SYMBOL(ide_unregister_subdriver); 1874 1875/* 1876 * Probe module 1877 */ 1878 1879EXPORT_SYMBOL(ide_lock); 1880 1881static int ide_bus_match(struct device *dev, struct device_driver *drv) 1882{ 1883 return 1; 1884} 1885 1886static char *media_string(ide_drive_t *drive) 1887{ 1888 switch (drive->media) { 1889 case ide_disk: 1890 return "disk"; 1891 case ide_cdrom: 1892 return "cdrom"; 1893 case ide_tape: 1894 return "tape"; 1895 case ide_floppy: 1896 return "floppy"; 1897 default: 1898 return "UNKNOWN"; 1899 } 1900} 1901 1902static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) 1903{ 1904 ide_drive_t *drive = to_ide_device(dev); 1905 return sprintf(buf, "%s\n", media_string(drive)); 1906} 1907 1908static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) 1909{ 1910 ide_drive_t *drive = to_ide_device(dev); 1911 return sprintf(buf, "%s\n", drive->name); 1912} 1913 1914static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) 1915{ 1916 ide_drive_t *drive = to_ide_device(dev); 1917 return sprintf(buf, "ide:m-%s\n", media_string(drive)); 1918} 1919 1920static struct device_attribute ide_dev_attrs[] = { 1921 __ATTR_RO(media), 1922 __ATTR_RO(drivename), 1923 __ATTR_RO(modalias), 1924 __ATTR_NULL 1925}; 1926 1927static int ide_uevent(struct device *dev, char **envp, int num_envp, 1928 char *buffer, int buffer_size) 1929{ 1930 ide_drive_t *drive = to_ide_device(dev); 1931 int i = 0; 1932 int length = 0; 1933 1934 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, 1935 "MEDIA=%s", media_string(drive)); 1936 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, 1937 "DRIVENAME=%s", drive->name); 1938 add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, 1939 "MODALIAS=ide:m-%s", media_string(drive)); 1940 envp[i] = NULL; 1941 return 0; 1942} 1943 1944static int generic_ide_probe(struct device *dev) 1945{ 1946 ide_drive_t *drive = to_ide_device(dev); 1947 ide_driver_t *drv = to_ide_driver(dev->driver); 1948 1949 return drv->probe ? drv->probe(drive) : -ENODEV; 1950} 1951 1952static int generic_ide_remove(struct device *dev) 1953{ 1954 ide_drive_t *drive = to_ide_device(dev); 1955 ide_driver_t *drv = to_ide_driver(dev->driver); 1956 1957 if (drv->remove) 1958 drv->remove(drive); 1959 1960 return 0; 1961} 1962 1963static void generic_ide_shutdown(struct device *dev) 1964{ 1965 ide_drive_t *drive = to_ide_device(dev); 1966 ide_driver_t *drv = to_ide_driver(dev->driver); 1967 1968 if (dev->driver && drv->shutdown) 1969 drv->shutdown(drive); 1970} 1971 1972struct bus_type ide_bus_type = { 1973 .name = "ide", 1974 .match = ide_bus_match, 1975 .uevent = ide_uevent, 1976 .probe = generic_ide_probe, 1977 .remove = generic_ide_remove, 1978 .shutdown = generic_ide_shutdown, 1979 .dev_attrs = ide_dev_attrs, 1980 .suspend = generic_ide_suspend, 1981 .resume = generic_ide_resume, 1982}; 1983 1984EXPORT_SYMBOL_GPL(ide_bus_type); 1985 1986/* 1987 * This is gets invoked once during initialization, to set *everything* up 1988 */ 1989static int __init ide_init(void) 1990{ 1991 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); 1992 system_bus_speed = ide_system_bus_speed(); 1993 1994 bus_register(&ide_bus_type); 1995 1996 init_ide_data(); 1997 1998#ifdef CONFIG_PROC_FS 1999 proc_ide_root = proc_mkdir("ide", NULL); 2000#endif 2001 2002#ifdef CONFIG_BLK_DEV_ALI14XX 2003 if (probe_ali14xx) 2004 (void)ali14xx_init(); 2005#endif 2006#ifdef CONFIG_BLK_DEV_UMC8672 2007 if (probe_umc8672) 2008 (void)umc8672_init(); 2009#endif 2010#ifdef CONFIG_BLK_DEV_DTC2278 2011 if (probe_dtc2278) 2012 (void)dtc2278_init(); 2013#endif 2014#ifdef CONFIG_BLK_DEV_HT6560B 2015 if (probe_ht6560b) 2016 (void)ht6560b_init(); 2017#endif 2018#ifdef CONFIG_BLK_DEV_QD65XX 2019 if (probe_qd65xx) 2020 (void)qd65xx_init(); 2021#endif 2022 2023 initializing = 1; 2024 /* Probe for special PCI and other "known" interface chipsets. */ 2025 probe_for_hwifs(); 2026 initializing = 0; 2027 2028#ifdef CONFIG_PROC_FS 2029 proc_ide_create(); 2030#endif 2031 return 0; 2032} 2033 2034#ifdef MODULE 2035static char *options = NULL; 2036module_param(options, charp, 0); 2037MODULE_LICENSE("GPL"); 2038 2039static void __init parse_options (char *line) 2040{ 2041 char *next = line; 2042 2043 if (line == NULL || !*line) 2044 return; 2045 while ((line = next) != NULL) { 2046 if ((next = strchr(line,' ')) != NULL) 2047 *next++ = 0; 2048 if (!ide_setup(line)) 2049 printk (KERN_INFO "Unknown option '%s'\n", line); 2050 } 2051} 2052 2053int __init init_module (void) 2054{ 2055 parse_options(options); 2056 return ide_init(); 2057} 2058 2059void cleanup_module (void) 2060{ 2061 int index; 2062 2063 for (index = 0; index < MAX_HWIFS; ++index) 2064 ide_unregister(index); 2065 2066#ifdef CONFIG_PROC_FS 2067 proc_ide_destroy(); 2068#endif 2069 2070 bus_unregister(&ide_bus_type); 2071} 2072 2073#else /* !MODULE */ 2074 2075__setup("", ide_setup); 2076 2077module_init(ide_init); 2078 2079#endif /* MODULE */ 2080