Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | * ... |
| 20 | * |
| 21 | * From hd.c: |
| 22 | * | |
| 23 | * | It traverses the request-list, using interrupts to jump between functions. |
| 24 | * | As nearly all functions can be called within interrupts, we may not sleep. |
| 25 | * | Special care is recommended. Have Fun! |
| 26 | * | |
| 27 | * | modified by Drew Eckhardt to check nr of hd's from the CMOS. |
| 28 | * | |
| 29 | * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug |
| 30 | * | in the early extended-partition checks and added DM partitions. |
| 31 | * | |
| 32 | * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI). |
| 33 | * | |
| 34 | * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads", |
| 35 | * | and general streamlining by Mark Lord (mlord@pobox.com). |
| 36 | * |
| 37 | * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by: |
| 38 | * |
| 39 | * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg) |
| 40 | * Delman Lee (delman@ieee.org) ("Mr. atdisk2") |
| 41 | * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom) |
| 42 | * |
| 43 | * This was a rewrite of just about everything from hd.c, though some original |
| 44 | * code is still sprinkled about. Think of it as a major evolution, with |
| 45 | * inspiration from lots of linux users, esp. hamish@zot.apana.org.au |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | */ |
| 47 | |
| 48 | #define REVISION "Revision: 7.00alpha2" |
| 49 | #define VERSION "Id: ide.c 7.00a2 20020906" |
| 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #define _IDE_C /* Tell ide.h it's really us */ |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <linux/module.h> |
| 54 | #include <linux/types.h> |
| 55 | #include <linux/string.h> |
| 56 | #include <linux/kernel.h> |
| 57 | #include <linux/timer.h> |
| 58 | #include <linux/mm.h> |
| 59 | #include <linux/interrupt.h> |
| 60 | #include <linux/major.h> |
| 61 | #include <linux/errno.h> |
| 62 | #include <linux/genhd.h> |
| 63 | #include <linux/blkpg.h> |
| 64 | #include <linux/slab.h> |
| 65 | #include <linux/init.h> |
| 66 | #include <linux/pci.h> |
| 67 | #include <linux/delay.h> |
| 68 | #include <linux/ide.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | #include <linux/completion.h> |
| 70 | #include <linux/reboot.h> |
| 71 | #include <linux/cdrom.h> |
| 72 | #include <linux/seq_file.h> |
| 73 | #include <linux/device.h> |
| 74 | #include <linux/bitops.h> |
| 75 | |
| 76 | #include <asm/byteorder.h> |
| 77 | #include <asm/irq.h> |
| 78 | #include <asm/uaccess.h> |
| 79 | #include <asm/io.h> |
| 80 | |
| 81 | |
| 82 | /* default maximum number of failures */ |
| 83 | #define IDE_DEFAULT_MAX_FAILURES 1 |
| 84 | |
| 85 | static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, |
| 86 | IDE2_MAJOR, IDE3_MAJOR, |
| 87 | IDE4_MAJOR, IDE5_MAJOR, |
| 88 | IDE6_MAJOR, IDE7_MAJOR, |
| 89 | IDE8_MAJOR, IDE9_MAJOR }; |
| 90 | |
| 91 | static int idebus_parameter; /* holds the "idebus=" parameter */ |
| 92 | static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 94 | DEFINE_MUTEX(ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
| 96 | |
Bartlomiej Zolnierkiewicz | 6d208b3 | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 97 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */ |
| 99 | #endif |
| 100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | int noautodma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | EXPORT_SYMBOL(noautodma); |
| 104 | |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 105 | #ifdef CONFIG_BLK_DEV_IDEACPI |
| 106 | int ide_noacpi = 0; |
| 107 | int ide_noacpitfs = 1; |
| 108 | int ide_noacpionboot = 1; |
| 109 | #endif |
| 110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | /* |
| 112 | * This is declared extern in ide.h, for access by other IDE modules: |
| 113 | */ |
| 114 | ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ |
| 115 | |
| 116 | EXPORT_SYMBOL(ide_hwifs); |
| 117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | /* |
| 119 | * Do not even *think* about calling this! |
| 120 | */ |
| 121 | static void init_hwif_data(ide_hwif_t *hwif, unsigned int index) |
| 122 | { |
| 123 | unsigned int unit; |
| 124 | |
| 125 | /* bulk initialize hwif & drive info with zeros */ |
| 126 | memset(hwif, 0, sizeof(ide_hwif_t)); |
| 127 | |
| 128 | /* fill in any non-zero initial values */ |
| 129 | hwif->index = index; |
| 130 | hwif->major = ide_hwif_to_major[index]; |
| 131 | |
| 132 | hwif->name[0] = 'i'; |
| 133 | hwif->name[1] = 'd'; |
| 134 | hwif->name[2] = 'e'; |
| 135 | hwif->name[3] = '0' + index; |
| 136 | |
| 137 | hwif->bus_state = BUSSTATE_ON; |
| 138 | |
| 139 | hwif->atapi_dma = 0; /* disable all atapi dma */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 141 | init_completion(&hwif->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
| 143 | default_hwif_iops(hwif); |
| 144 | default_hwif_transport(hwif); |
| 145 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| 146 | ide_drive_t *drive = &hwif->drives[unit]; |
| 147 | |
| 148 | drive->media = ide_disk; |
| 149 | drive->select.all = (unit<<4)|0xa0; |
| 150 | drive->hwif = hwif; |
| 151 | drive->ctl = 0x08; |
| 152 | drive->ready_stat = READY_STAT; |
| 153 | drive->bad_wstat = BAD_W_STAT; |
| 154 | drive->special.b.recalibrate = 1; |
| 155 | drive->special.b.set_geometry = 1; |
| 156 | drive->name[0] = 'h'; |
| 157 | drive->name[1] = 'd'; |
| 158 | drive->name[2] = 'a' + (index * MAX_DRIVES) + unit; |
| 159 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
| 160 | drive->using_dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | drive->vdma = 0; |
| 162 | INIT_LIST_HEAD(&drive->list); |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 163 | init_completion(&drive->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | } |
| 165 | } |
| 166 | |
| 167 | static void init_hwif_default(ide_hwif_t *hwif, unsigned int index) |
| 168 | { |
| 169 | hw_regs_t hw; |
| 170 | |
| 171 | memset(&hw, 0, sizeof(hw_regs_t)); |
| 172 | |
| 173 | ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq); |
| 174 | |
| 175 | memcpy(&hwif->hw, &hw, sizeof(hw)); |
| 176 | memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports)); |
| 177 | |
| 178 | hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; |
| 179 | #ifdef CONFIG_BLK_DEV_HD |
| 180 | if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA) |
| 181 | hwif->noprobe = 1; /* may be overridden by ide_setup() */ |
| 182 | #endif |
| 183 | } |
| 184 | |
| 185 | extern void ide_arm_init(void); |
| 186 | |
| 187 | /* |
| 188 | * init_ide_data() sets reasonable default values into all fields |
| 189 | * of all instances of the hwifs and drives, but only on the first call. |
| 190 | * Subsequent calls have no effect (they don't wipe out anything). |
| 191 | * |
| 192 | * This routine is normally called at driver initialization time, |
| 193 | * but may also be called MUCH earlier during kernel "command-line" |
| 194 | * parameter processing. As such, we cannot depend on any other parts |
| 195 | * of the kernel (such as memory allocation) to be functioning yet. |
| 196 | * |
| 197 | * This is too bad, as otherwise we could dynamically allocate the |
| 198 | * ide_drive_t structs as needed, rather than always consuming memory |
| 199 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. |
| 200 | * |
| 201 | * FIXME: We should stuff the setup data into __init and copy the |
| 202 | * relevant hwifs/allocate them properly during boot. |
| 203 | */ |
| 204 | #define MAGIC_COOKIE 0x12345678 |
| 205 | static void __init init_ide_data (void) |
| 206 | { |
| 207 | ide_hwif_t *hwif; |
| 208 | unsigned int index; |
| 209 | static unsigned long magic_cookie = MAGIC_COOKIE; |
| 210 | |
| 211 | if (magic_cookie != MAGIC_COOKIE) |
| 212 | return; /* already initialized */ |
| 213 | magic_cookie = 0; |
| 214 | |
| 215 | /* Initialise all interface structures */ |
| 216 | for (index = 0; index < MAX_HWIFS; ++index) { |
| 217 | hwif = &ide_hwifs[index]; |
| 218 | init_hwif_data(hwif, index); |
| 219 | init_hwif_default(hwif, index); |
| 220 | #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI) |
| 221 | hwif->irq = hwif->hw.irq = |
| 222 | ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); |
| 223 | #endif |
| 224 | } |
| 225 | #ifdef CONFIG_IDE_ARM |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | ide_arm_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | #endif |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * ide_system_bus_speed - guess bus speed |
| 232 | * |
| 233 | * ide_system_bus_speed() returns what we think is the system VESA/PCI |
| 234 | * bus speed (in MHz). This is used for calculating interface PIO timings. |
| 235 | * The default is 40 for known PCI systems, 50 otherwise. |
| 236 | * The "idebus=xx" parameter can be used to override this value. |
| 237 | * The actual value to be used is computed/displayed the first time |
| 238 | * through. Drivers should only use this as a last resort. |
| 239 | * |
| 240 | * Returns a guessed speed in MHz. |
| 241 | */ |
| 242 | |
| 243 | static int ide_system_bus_speed(void) |
| 244 | { |
| 245 | #ifdef CONFIG_PCI |
| 246 | static struct pci_device_id pci_default[] = { |
| 247 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, |
| 248 | { } |
| 249 | }; |
| 250 | #else |
| 251 | #define pci_default 0 |
| 252 | #endif /* CONFIG_PCI */ |
| 253 | |
| 254 | if (!system_bus_speed) { |
| 255 | if (idebus_parameter) { |
| 256 | /* user supplied value */ |
| 257 | system_bus_speed = idebus_parameter; |
| 258 | } else if (pci_dev_present(pci_default)) { |
| 259 | /* safe default value for PCI */ |
| 260 | system_bus_speed = 33; |
| 261 | } else { |
| 262 | /* safe default value for VESA and PCI */ |
| 263 | system_bus_speed = 50; |
| 264 | } |
| 265 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " |
| 266 | "for PIO modes%s\n", system_bus_speed, |
| 267 | idebus_parameter ? "" : "; override with idebus=xx"); |
| 268 | } |
| 269 | return system_bus_speed; |
| 270 | } |
| 271 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | static struct resource* hwif_request_region(ide_hwif_t *hwif, |
| 273 | unsigned long addr, int num) |
| 274 | { |
| 275 | struct resource *res = request_region(addr, num, hwif->name); |
| 276 | |
| 277 | if (!res) |
| 278 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", |
| 279 | hwif->name, addr, addr+num-1); |
| 280 | return res; |
| 281 | } |
| 282 | |
| 283 | /** |
| 284 | * ide_hwif_request_regions - request resources for IDE |
| 285 | * @hwif: interface to use |
| 286 | * |
| 287 | * Requests all the needed resources for an interface. |
| 288 | * Right now core IDE code does this work which is deeply wrong. |
| 289 | * MMIO leaves it to the controller driver, |
| 290 | * PIO will migrate this way over time. |
| 291 | */ |
| 292 | |
| 293 | int ide_hwif_request_regions(ide_hwif_t *hwif) |
| 294 | { |
| 295 | unsigned long addr; |
| 296 | unsigned int i; |
| 297 | |
Bartlomiej Zolnierkiewicz | 2ad1e55 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 298 | if (hwif->mmio) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
| 301 | if (addr && !hwif_request_region(hwif, addr, 1)) |
| 302 | goto control_region_busy; |
| 303 | hwif->straight8 = 0; |
| 304 | addr = hwif->io_ports[IDE_DATA_OFFSET]; |
| 305 | if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { |
| 306 | if (!hwif_request_region(hwif, addr, 8)) |
| 307 | goto data_region_busy; |
| 308 | hwif->straight8 = 1; |
| 309 | return 0; |
| 310 | } |
| 311 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { |
| 312 | addr = hwif->io_ports[i]; |
| 313 | if (!hwif_request_region(hwif, addr, 1)) { |
| 314 | while (--i) |
| 315 | release_region(addr, 1); |
| 316 | goto data_region_busy; |
| 317 | } |
| 318 | } |
| 319 | return 0; |
| 320 | |
| 321 | data_region_busy: |
| 322 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
| 323 | if (addr) |
| 324 | release_region(addr, 1); |
| 325 | control_region_busy: |
| 326 | /* If any errors are return, we drop the hwif interface. */ |
| 327 | return -EBUSY; |
| 328 | } |
| 329 | |
| 330 | /** |
| 331 | * ide_hwif_release_regions - free IDE resources |
| 332 | * |
| 333 | * Note that we only release the standard ports, |
| 334 | * and do not even try to handle any extra ports |
| 335 | * allocated for weird IDE interface chipsets. |
| 336 | * |
| 337 | * Note also that we don't yet handle mmio resources here. More |
| 338 | * importantly our caller should be doing this so we need to |
| 339 | * restructure this as a helper function for drivers. |
| 340 | */ |
| 341 | |
| 342 | void ide_hwif_release_regions(ide_hwif_t *hwif) |
| 343 | { |
| 344 | u32 i = 0; |
| 345 | |
Bartlomiej Zolnierkiewicz | 2ad1e55 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 346 | if (hwif->mmio) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | return; |
| 348 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) |
| 349 | release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); |
| 350 | if (hwif->straight8) { |
| 351 | release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); |
| 352 | return; |
| 353 | } |
| 354 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) |
| 355 | if (hwif->io_ports[i]) |
| 356 | release_region(hwif->io_ports[i], 1); |
| 357 | } |
| 358 | |
| 359 | /** |
| 360 | * ide_hwif_restore - restore hwif to template |
| 361 | * @hwif: hwif to update |
| 362 | * @tmp_hwif: template |
| 363 | * |
Sergei Shtylylov | 020e322 | 2006-10-03 01:14:13 -0700 | [diff] [blame] | 364 | * Restore hwif to a previous state by copying most settings |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | * from the template. |
| 366 | */ |
| 367 | |
| 368 | static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) |
| 369 | { |
| 370 | hwif->hwgroup = tmp_hwif->hwgroup; |
| 371 | |
| 372 | hwif->gendev.parent = tmp_hwif->gendev.parent; |
| 373 | |
| 374 | hwif->proc = tmp_hwif->proc; |
| 375 | |
| 376 | hwif->major = tmp_hwif->major; |
| 377 | hwif->straight8 = tmp_hwif->straight8; |
| 378 | hwif->bus_state = tmp_hwif->bus_state; |
| 379 | |
Bartlomiej Zolnierkiewicz | 6a824c9 | 2007-07-20 01:11:58 +0200 | [diff] [blame] | 380 | hwif->host_flags = tmp_hwif->host_flags; |
| 381 | |
Bartlomiej Zolnierkiewicz | 4099d14 | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 382 | hwif->pio_mask = tmp_hwif->pio_mask; |
| 383 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | hwif->atapi_dma = tmp_hwif->atapi_dma; |
| 385 | hwif->ultra_mask = tmp_hwif->ultra_mask; |
| 386 | hwif->mwdma_mask = tmp_hwif->mwdma_mask; |
| 387 | hwif->swdma_mask = tmp_hwif->swdma_mask; |
| 388 | |
Bartlomiej Zolnierkiewicz | 49521f9 | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 389 | hwif->cbl = tmp_hwif->cbl; |
| 390 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | hwif->chipset = tmp_hwif->chipset; |
| 392 | hwif->hold = tmp_hwif->hold; |
| 393 | |
| 394 | #ifdef CONFIG_BLK_DEV_IDEPCI |
| 395 | hwif->pci_dev = tmp_hwif->pci_dev; |
| 396 | hwif->cds = tmp_hwif->cds; |
| 397 | #endif |
| 398 | |
| 399 | hwif->tuneproc = tmp_hwif->tuneproc; |
| 400 | hwif->speedproc = tmp_hwif->speedproc; |
Bartlomiej Zolnierkiewicz | 2d5eaa6 | 2007-05-10 00:01:08 +0200 | [diff] [blame] | 401 | hwif->udma_filter = tmp_hwif->udma_filter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | hwif->selectproc = tmp_hwif->selectproc; |
| 403 | hwif->reset_poll = tmp_hwif->reset_poll; |
| 404 | hwif->pre_reset = tmp_hwif->pre_reset; |
| 405 | hwif->resetproc = tmp_hwif->resetproc; |
| 406 | hwif->intrproc = tmp_hwif->intrproc; |
| 407 | hwif->maskproc = tmp_hwif->maskproc; |
| 408 | hwif->quirkproc = tmp_hwif->quirkproc; |
| 409 | hwif->busproc = tmp_hwif->busproc; |
| 410 | |
| 411 | hwif->ata_input_data = tmp_hwif->ata_input_data; |
| 412 | hwif->ata_output_data = tmp_hwif->ata_output_data; |
| 413 | hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes; |
| 414 | hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes; |
| 415 | |
| 416 | hwif->dma_setup = tmp_hwif->dma_setup; |
| 417 | hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd; |
| 418 | hwif->dma_start = tmp_hwif->dma_start; |
| 419 | hwif->ide_dma_end = tmp_hwif->ide_dma_end; |
| 420 | hwif->ide_dma_check = tmp_hwif->ide_dma_check; |
| 421 | hwif->ide_dma_on = tmp_hwif->ide_dma_on; |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 422 | hwif->dma_off_quietly = tmp_hwif->dma_off_quietly; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq; |
Albert Lee | f0dd871 | 2007-02-17 02:40:21 +0100 | [diff] [blame] | 424 | hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq; |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 425 | hwif->dma_host_on = tmp_hwif->dma_host_on; |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 426 | hwif->dma_host_off = tmp_hwif->dma_host_off; |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 427 | hwif->dma_lost_irq = tmp_hwif->dma_lost_irq; |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 428 | hwif->dma_timeout = tmp_hwif->dma_timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | |
| 430 | hwif->OUTB = tmp_hwif->OUTB; |
| 431 | hwif->OUTBSYNC = tmp_hwif->OUTBSYNC; |
| 432 | hwif->OUTW = tmp_hwif->OUTW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | hwif->OUTSW = tmp_hwif->OUTSW; |
| 434 | hwif->OUTSL = tmp_hwif->OUTSL; |
| 435 | |
| 436 | hwif->INB = tmp_hwif->INB; |
| 437 | hwif->INW = tmp_hwif->INW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | hwif->INSW = tmp_hwif->INSW; |
| 439 | hwif->INSL = tmp_hwif->INSL; |
| 440 | |
| 441 | hwif->sg_max_nents = tmp_hwif->sg_max_nents; |
| 442 | |
| 443 | hwif->mmio = tmp_hwif->mmio; |
| 444 | hwif->rqsize = tmp_hwif->rqsize; |
| 445 | hwif->no_lba48 = tmp_hwif->no_lba48; |
| 446 | |
| 447 | #ifndef CONFIG_BLK_DEV_IDECS |
| 448 | hwif->irq = tmp_hwif->irq; |
| 449 | #endif |
| 450 | |
| 451 | hwif->dma_base = tmp_hwif->dma_base; |
| 452 | hwif->dma_master = tmp_hwif->dma_master; |
| 453 | hwif->dma_command = tmp_hwif->dma_command; |
| 454 | hwif->dma_vendor1 = tmp_hwif->dma_vendor1; |
| 455 | hwif->dma_status = tmp_hwif->dma_status; |
| 456 | hwif->dma_vendor3 = tmp_hwif->dma_vendor3; |
| 457 | hwif->dma_prdtable = tmp_hwif->dma_prdtable; |
| 458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | hwif->config_data = tmp_hwif->config_data; |
| 460 | hwif->select_data = tmp_hwif->select_data; |
Sergei Shtylylov | 020e322 | 2006-10-03 01:14:13 -0700 | [diff] [blame] | 461 | hwif->extra_base = tmp_hwif->extra_base; |
| 462 | hwif->extra_ports = tmp_hwif->extra_ports; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | hwif->autodma = tmp_hwif->autodma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
| 465 | hwif->hwif_data = tmp_hwif->hwif_data; |
| 466 | } |
| 467 | |
| 468 | /** |
Sergei Shtylylov | 020e322 | 2006-10-03 01:14:13 -0700 | [diff] [blame] | 469 | * ide_unregister - free an IDE interface |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | * @index: index of interface (will change soon to a pointer) |
| 471 | * |
| 472 | * Perform the final unregister of an IDE interface. At the moment |
| 473 | * we don't refcount interfaces so this will also get split up. |
| 474 | * |
| 475 | * Locking: |
| 476 | * The caller must not hold the IDE locks |
| 477 | * The drive present/vanishing is not yet properly locked |
| 478 | * Take care with the callbacks. These have been split to avoid |
| 479 | * deadlocking the IDE layer. The shutdown callback is called |
| 480 | * before we take the lock and free resources. It is up to the |
| 481 | * caller to be sure there is no pending I/O here, and that |
Sergei Shtylylov | 020e322 | 2006-10-03 01:14:13 -0700 | [diff] [blame] | 482 | * the interface will not be reopened (present/vanishing locking |
| 483 | * isn't yet done BTW). After we commit to the final kill we |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | * call the cleanup callback with the ide locks held. |
| 485 | * |
| 486 | * Unregister restores the hwif structures to the default state. |
| 487 | * This is raving bonkers. |
| 488 | */ |
| 489 | |
| 490 | void ide_unregister(unsigned int index) |
| 491 | { |
| 492 | ide_drive_t *drive; |
| 493 | ide_hwif_t *hwif, *g; |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 494 | static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | ide_hwgroup_t *hwgroup; |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 496 | int irq_count = 0, unit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
| 498 | BUG_ON(index >= MAX_HWIFS); |
| 499 | |
| 500 | BUG_ON(in_interrupt()); |
| 501 | BUG_ON(irqs_disabled()); |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 502 | mutex_lock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | spin_lock_irq(&ide_lock); |
| 504 | hwif = &ide_hwifs[index]; |
| 505 | if (!hwif->present) |
| 506 | goto abort; |
| 507 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| 508 | drive = &hwif->drives[unit]; |
Greg Kroah-Hartman | 94f6c59 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 509 | if (!drive->present) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | continue; |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 511 | spin_unlock_irq(&ide_lock); |
| 512 | device_unregister(&drive->gendev); |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 513 | wait_for_completion(&drive->gendev_rel_comp); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 514 | spin_lock_irq(&ide_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | } |
| 516 | hwif->present = 0; |
| 517 | |
| 518 | spin_unlock_irq(&ide_lock); |
| 519 | |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 520 | ide_proc_unregister_port(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
| 522 | hwgroup = hwif->hwgroup; |
| 523 | /* |
| 524 | * free the irq if we were the only hwif using it |
| 525 | */ |
| 526 | g = hwgroup->hwif; |
| 527 | do { |
| 528 | if (g->irq == hwif->irq) |
| 529 | ++irq_count; |
| 530 | g = g->next; |
| 531 | } while (g != hwgroup->hwif); |
| 532 | if (irq_count == 1) |
| 533 | free_irq(hwif->irq, hwgroup); |
| 534 | |
| 535 | spin_lock_irq(&ide_lock); |
| 536 | /* |
| 537 | * Note that we only release the standard ports, |
| 538 | * and do not even try to handle any extra ports |
| 539 | * allocated for weird IDE interface chipsets. |
| 540 | */ |
| 541 | ide_hwif_release_regions(hwif); |
| 542 | |
| 543 | /* |
| 544 | * Remove us from the hwgroup, and free |
| 545 | * the hwgroup if we were the only member |
| 546 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | if (hwif->next == hwif) { |
| 548 | BUG_ON(hwgroup->hwif != hwif); |
| 549 | kfree(hwgroup); |
| 550 | } else { |
| 551 | /* There is another interface in hwgroup. |
| 552 | * Unlink us, and set hwgroup->drive and ->hwif to |
| 553 | * something sane. |
| 554 | */ |
| 555 | g = hwgroup->hwif; |
| 556 | while (g->next != hwif) |
| 557 | g = g->next; |
| 558 | g->next = hwif->next; |
| 559 | if (hwgroup->hwif == hwif) { |
| 560 | /* Chose a random hwif for hwgroup->hwif. |
| 561 | * It's guaranteed that there are no drives |
| 562 | * left in the hwgroup. |
| 563 | */ |
| 564 | BUG_ON(hwgroup->drive != NULL); |
| 565 | hwgroup->hwif = g; |
| 566 | } |
| 567 | BUG_ON(hwgroup->hwif == hwif); |
| 568 | } |
| 569 | |
| 570 | /* More messed up locking ... */ |
| 571 | spin_unlock_irq(&ide_lock); |
| 572 | device_unregister(&hwif->gendev); |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 573 | wait_for_completion(&hwif->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | |
| 575 | /* |
| 576 | * Remove us from the kernel's knowledge |
| 577 | */ |
| 578 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); |
| 579 | kfree(hwif->sg_table); |
| 580 | unregister_blkdev(hwif->major, hwif->name); |
| 581 | spin_lock_irq(&ide_lock); |
| 582 | |
| 583 | if (hwif->dma_base) { |
| 584 | (void) ide_release_dma(hwif); |
| 585 | |
| 586 | hwif->dma_base = 0; |
| 587 | hwif->dma_master = 0; |
| 588 | hwif->dma_command = 0; |
| 589 | hwif->dma_vendor1 = 0; |
| 590 | hwif->dma_status = 0; |
| 591 | hwif->dma_vendor3 = 0; |
| 592 | hwif->dma_prdtable = 0; |
Sergei Shtylylov | 020e322 | 2006-10-03 01:14:13 -0700 | [diff] [blame] | 593 | |
| 594 | hwif->extra_base = 0; |
| 595 | hwif->extra_ports = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | } |
| 597 | |
| 598 | /* copy original settings */ |
| 599 | tmp_hwif = *hwif; |
| 600 | |
| 601 | /* restore hwif data to pristine status */ |
| 602 | init_hwif_data(hwif, index); |
| 603 | init_hwif_default(hwif, index); |
| 604 | |
| 605 | ide_hwif_restore(hwif, &tmp_hwif); |
| 606 | |
| 607 | abort: |
| 608 | spin_unlock_irq(&ide_lock); |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 609 | mutex_unlock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | } |
| 611 | |
| 612 | EXPORT_SYMBOL(ide_unregister); |
| 613 | |
| 614 | |
| 615 | /** |
| 616 | * ide_setup_ports - set up IDE interface ports |
| 617 | * @hw: register descriptions |
| 618 | * @base: base register |
| 619 | * @offsets: table of register offsets |
| 620 | * @ctrl: control register |
| 621 | * @ack_irq: IRQ ack |
| 622 | * @irq: interrupt lie |
| 623 | * |
| 624 | * Setup hw_regs_t structure described by parameters. You |
| 625 | * may set up the hw structure yourself OR use this routine to |
| 626 | * do it for you. This is basically a helper |
| 627 | * |
| 628 | */ |
| 629 | |
| 630 | void ide_setup_ports ( hw_regs_t *hw, |
| 631 | unsigned long base, int *offsets, |
| 632 | unsigned long ctrl, unsigned long intr, |
| 633 | ide_ack_intr_t *ack_intr, |
| 634 | /* |
| 635 | * ide_io_ops_t *iops, |
| 636 | */ |
| 637 | int irq) |
| 638 | { |
| 639 | int i; |
| 640 | |
Roman Zippel | 2c3e026 | 2006-06-23 02:04:51 -0700 | [diff] [blame] | 641 | memset(hw, 0, sizeof(hw_regs_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | for (i = 0; i < IDE_NR_PORTS; i++) { |
| 643 | if (offsets[i] == -1) { |
| 644 | switch(i) { |
| 645 | case IDE_CONTROL_OFFSET: |
| 646 | hw->io_ports[i] = ctrl; |
| 647 | break; |
| 648 | #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC) |
| 649 | case IDE_IRQ_OFFSET: |
| 650 | hw->io_ports[i] = intr; |
| 651 | break; |
| 652 | #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */ |
| 653 | default: |
| 654 | hw->io_ports[i] = 0; |
| 655 | break; |
| 656 | } |
| 657 | } else { |
| 658 | hw->io_ports[i] = base + offsets[i]; |
| 659 | } |
| 660 | } |
| 661 | hw->irq = irq; |
| 662 | hw->dma = NO_DMA; |
| 663 | hw->ack_intr = ack_intr; |
| 664 | /* |
| 665 | * hw->iops = iops; |
| 666 | */ |
| 667 | } |
| 668 | |
| 669 | /** |
| 670 | * ide_register_hw_with_fixup - register IDE interface |
| 671 | * @hw: hardware registers |
Bartlomiej Zolnierkiewicz | 869c56e | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 672 | * @initializing: set while initializing built-in drivers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | * @hwifp: pointer to returned hwif |
| 674 | * @fixup: fixup function |
| 675 | * |
| 676 | * Register an IDE interface, specifying exactly the registers etc. |
| 677 | * Set init=1 iff calling before probes have taken place. |
| 678 | * |
| 679 | * Returns -1 on error. |
| 680 | */ |
| 681 | |
Bartlomiej Zolnierkiewicz | 869c56e | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 682 | int ide_register_hw_with_fixup(hw_regs_t *hw, int initializing, |
| 683 | ide_hwif_t **hwifp, |
| 684 | void(*fixup)(ide_hwif_t *hwif)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | { |
| 686 | int index, retry = 1; |
| 687 | ide_hwif_t *hwif; |
| 688 | |
| 689 | do { |
| 690 | for (index = 0; index < MAX_HWIFS; ++index) { |
| 691 | hwif = &ide_hwifs[index]; |
| 692 | if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET]) |
| 693 | goto found; |
| 694 | } |
| 695 | for (index = 0; index < MAX_HWIFS; ++index) { |
| 696 | hwif = &ide_hwifs[index]; |
| 697 | if (hwif->hold) |
| 698 | continue; |
| 699 | if ((!hwif->present && !hwif->mate && !initializing) || |
| 700 | (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing)) |
| 701 | goto found; |
| 702 | } |
| 703 | for (index = 0; index < MAX_HWIFS; index++) |
| 704 | ide_unregister(index); |
| 705 | } while (retry--); |
| 706 | return -1; |
| 707 | found: |
| 708 | if (hwif->present) |
| 709 | ide_unregister(index); |
| 710 | else if (!hwif->hold) { |
| 711 | init_hwif_data(hwif, index); |
| 712 | init_hwif_default(hwif, index); |
| 713 | } |
| 714 | if (hwif->present) |
| 715 | return -1; |
| 716 | memcpy(&hwif->hw, hw, sizeof(*hw)); |
| 717 | memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports)); |
| 718 | hwif->irq = hw->irq; |
| 719 | hwif->noprobe = 0; |
| 720 | hwif->chipset = hw->chipset; |
Hannes Reinecke | 4349d5c | 2005-11-09 22:47:18 +0100 | [diff] [blame] | 721 | hwif->gendev.parent = hw->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | |
| 723 | if (!initializing) { |
| 724 | probe_hwif_init_with_fixup(hwif, fixup); |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 725 | ide_proc_register_port(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | if (hwifp) |
| 729 | *hwifp = hwif; |
| 730 | |
| 731 | return (initializing || hwif->present) ? index : -1; |
| 732 | } |
| 733 | |
| 734 | EXPORT_SYMBOL(ide_register_hw_with_fixup); |
| 735 | |
Bartlomiej Zolnierkiewicz | 869c56e | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 736 | int ide_register_hw(hw_regs_t *hw, int initializing, ide_hwif_t **hwifp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | { |
Bartlomiej Zolnierkiewicz | 869c56e | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 738 | return ide_register_hw_with_fixup(hw, initializing, hwifp, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | EXPORT_SYMBOL(ide_register_hw); |
| 742 | |
| 743 | /* |
| 744 | * Locks for IDE setting functionality |
| 745 | */ |
| 746 | |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 747 | DEFINE_MUTEX(ide_setting_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 749 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 750 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | * ide_spin_wait_hwgroup - wait for group |
| 753 | * @drive: drive in the group |
| 754 | * |
| 755 | * Wait for an IDE device group to go non busy and then return |
| 756 | * holding the ide_lock which guards the hwgroup->busy status |
| 757 | * and right to use it. |
| 758 | */ |
| 759 | |
| 760 | int ide_spin_wait_hwgroup (ide_drive_t *drive) |
| 761 | { |
| 762 | ide_hwgroup_t *hwgroup = HWGROUP(drive); |
| 763 | unsigned long timeout = jiffies + (3 * HZ); |
| 764 | |
| 765 | spin_lock_irq(&ide_lock); |
| 766 | |
| 767 | while (hwgroup->busy) { |
| 768 | unsigned long lflags; |
| 769 | spin_unlock_irq(&ide_lock); |
| 770 | local_irq_set(lflags); |
| 771 | if (time_after(jiffies, timeout)) { |
| 772 | local_irq_restore(lflags); |
| 773 | printk(KERN_ERR "%s: channel busy\n", drive->name); |
| 774 | return -EBUSY; |
| 775 | } |
| 776 | local_irq_restore(lflags); |
| 777 | spin_lock_irq(&ide_lock); |
| 778 | } |
| 779 | return 0; |
| 780 | } |
| 781 | |
| 782 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); |
| 783 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 784 | int set_io_32bit(ide_drive_t *drive, int arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 786 | if (drive->no_io_32bit) |
| 787 | return -EPERM; |
| 788 | |
| 789 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) |
| 790 | return -EINVAL; |
| 791 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | drive->io_32bit = arg; |
| 793 | #ifdef CONFIG_BLK_DEV_DTC2278 |
| 794 | if (HWIF(drive)->chipset == ide_dtc2278) |
| 795 | HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg; |
| 796 | #endif /* CONFIG_BLK_DEV_DTC2278 */ |
| 797 | return 0; |
| 798 | } |
| 799 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 800 | static int set_ksettings(ide_drive_t *drive, int arg) |
| 801 | { |
| 802 | if (arg < 0 || arg > 1) |
| 803 | return -EINVAL; |
| 804 | |
| 805 | if (ide_spin_wait_hwgroup(drive)) |
| 806 | return -EBUSY; |
| 807 | drive->keep_settings = arg; |
| 808 | spin_unlock_irq(&ide_lock); |
| 809 | |
| 810 | return 0; |
| 811 | } |
| 812 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 813 | int set_using_dma(ide_drive_t *drive, int arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | { |
| 815 | #ifdef CONFIG_BLK_DEV_IDEDMA |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 816 | ide_hwif_t *hwif = drive->hwif; |
| 817 | int err = -EPERM; |
| 818 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 819 | if (arg < 0 || arg > 1) |
| 820 | return -EINVAL; |
| 821 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | if (!drive->id || !(drive->id->capability & 1)) |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 823 | goto out; |
| 824 | |
| 825 | if (hwif->ide_dma_check == NULL) |
| 826 | goto out; |
| 827 | |
| 828 | err = -EBUSY; |
| 829 | if (ide_spin_wait_hwgroup(drive)) |
| 830 | goto out; |
| 831 | /* |
| 832 | * set ->busy flag, unlock and let it ride |
| 833 | */ |
| 834 | hwif->hwgroup->busy = 1; |
| 835 | spin_unlock_irq(&ide_lock); |
| 836 | |
| 837 | err = 0; |
| 838 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | if (arg) { |
Bartlomiej Zolnierkiewicz | 793a972 | 2007-05-16 00:51:43 +0200 | [diff] [blame] | 840 | hwif->dma_off_quietly(drive); |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 841 | if (ide_set_dma(drive) || hwif->ide_dma_on(drive)) |
| 842 | err = -EIO; |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 843 | } else |
| 844 | ide_dma_off(drive); |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 845 | |
| 846 | /* |
| 847 | * lock, clear ->busy flag and unlock before leaving |
| 848 | */ |
| 849 | spin_lock_irq(&ide_lock); |
| 850 | hwif->hwgroup->busy = 0; |
| 851 | spin_unlock_irq(&ide_lock); |
| 852 | out: |
| 853 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | #else |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 855 | if (arg < 0 || arg > 1) |
| 856 | return -EINVAL; |
| 857 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | return -EPERM; |
| 859 | #endif |
| 860 | } |
| 861 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 862 | int set_pio_mode(ide_drive_t *drive, int arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | { |
| 864 | struct request rq; |
| 865 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 866 | if (arg < 0 || arg > 255) |
| 867 | return -EINVAL; |
| 868 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | if (!HWIF(drive)->tuneproc) |
| 870 | return -ENOSYS; |
| 871 | if (drive->special.b.set_tune) |
| 872 | return -EBUSY; |
| 873 | ide_init_drive_cmd(&rq); |
| 874 | drive->tune_req = (u8) arg; |
| 875 | drive->special.b.set_tune = 1; |
| 876 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); |
| 877 | return 0; |
| 878 | } |
| 879 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 880 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
| 881 | { |
| 882 | if (drive->no_unmask) |
| 883 | return -EPERM; |
| 884 | |
| 885 | if (arg < 0 || arg > 1) |
| 886 | return -EINVAL; |
| 887 | |
| 888 | if (ide_spin_wait_hwgroup(drive)) |
| 889 | return -EBUSY; |
| 890 | drive->unmask = arg; |
| 891 | spin_unlock_irq(&ide_lock); |
| 892 | |
| 893 | return 0; |
| 894 | } |
| 895 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | /** |
| 897 | * system_bus_clock - clock guess |
| 898 | * |
| 899 | * External version of the bus clock guess used by very old IDE drivers |
| 900 | * for things like VLB timings. Should not be used. |
| 901 | */ |
| 902 | |
| 903 | int system_bus_clock (void) |
| 904 | { |
| 905 | return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed )); |
| 906 | } |
| 907 | |
| 908 | EXPORT_SYMBOL(system_bus_clock); |
| 909 | |
David Brownell | b887d2e | 2006-08-14 23:11:05 -0700 | [diff] [blame] | 910 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | { |
| 912 | ide_drive_t *drive = dev->driver_data; |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 913 | ide_hwif_t *hwif = HWIF(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | struct request rq; |
| 915 | struct request_pm_state rqpm; |
| 916 | ide_task_t args; |
| 917 | |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 918 | /* Call ACPI _GTM only once */ |
| 919 | if (!(drive->dn % 2)) |
| 920 | ide_acpi_get_timing(hwif); |
| 921 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | memset(&rq, 0, sizeof(rq)); |
| 923 | memset(&rqpm, 0, sizeof(rqpm)); |
| 924 | memset(&args, 0, sizeof(args)); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 925 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | rq.special = &args; |
Jens Axboe | c00895a | 2006-09-30 20:29:12 +0200 | [diff] [blame] | 927 | rq.data = &rqpm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | rqpm.pm_step = ide_pm_state_start_suspend; |
David Brownell | b887d2e | 2006-08-14 23:11:05 -0700 | [diff] [blame] | 929 | if (mesg.event == PM_EVENT_PRETHAW) |
| 930 | mesg.event = PM_EVENT_FREEZE; |
| 931 | rqpm.pm_state = mesg.event; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | |
| 933 | return ide_do_drive_cmd(drive, &rq, ide_wait); |
| 934 | } |
| 935 | |
| 936 | static int generic_ide_resume(struct device *dev) |
| 937 | { |
| 938 | ide_drive_t *drive = dev->driver_data; |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 939 | ide_hwif_t *hwif = HWIF(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | struct request rq; |
| 941 | struct request_pm_state rqpm; |
| 942 | ide_task_t args; |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 943 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 945 | /* Call ACPI _STM only once */ |
| 946 | if (!(drive->dn % 2)) |
| 947 | ide_acpi_push_timing(hwif); |
| 948 | |
| 949 | ide_acpi_exec_tfs(drive); |
| 950 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | memset(&rq, 0, sizeof(rq)); |
| 952 | memset(&rqpm, 0, sizeof(rqpm)); |
| 953 | memset(&args, 0, sizeof(args)); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 954 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | rq.special = &args; |
Jens Axboe | c00895a | 2006-09-30 20:29:12 +0200 | [diff] [blame] | 956 | rq.data = &rqpm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | rqpm.pm_step = ide_pm_state_start_resume; |
Pavel Machek | ca078ba | 2005-09-03 15:56:57 -0700 | [diff] [blame] | 958 | rqpm.pm_state = PM_EVENT_ON; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 960 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
| 961 | |
Rafael J. Wysocki | ce9b2b0 | 2007-06-16 02:24:43 +0200 | [diff] [blame] | 962 | if (err == 0 && dev->driver) { |
| 963 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 964 | |
| 965 | if (drv->resume) |
| 966 | drv->resume(drive); |
| 967 | } |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 968 | |
| 969 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | } |
| 971 | |
| 972 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, |
| 973 | unsigned int cmd, unsigned long arg) |
| 974 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 975 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | ide_driver_t *drv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | void __user *p = (void __user *)arg; |
Linus Torvalds | 1985026 | 2007-07-17 15:57:42 -0700 | [diff] [blame] | 978 | int err = 0, (*setfunc)(ide_drive_t *, int); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 979 | u8 *val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 981 | switch (cmd) { |
| 982 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; |
| 983 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; |
| 984 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; |
| 985 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; |
| 986 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; |
| 987 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; |
| 988 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; |
| 989 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; |
| 990 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | |
| 993 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | case HDIO_OBSOLETE_IDENTITY: |
| 995 | case HDIO_GET_IDENTITY: |
| 996 | if (bdev != bdev->bd_contains) |
| 997 | return -EINVAL; |
| 998 | if (drive->id_read == 0) |
| 999 | return -ENOMSG; |
| 1000 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) |
| 1001 | return -EFAULT; |
| 1002 | return 0; |
| 1003 | |
| 1004 | case HDIO_GET_NICE: |
| 1005 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | |
| 1006 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | |
| 1007 | drive->nice0 << IDE_NICE_0 | |
| 1008 | drive->nice1 << IDE_NICE_1 | |
| 1009 | drive->nice2 << IDE_NICE_2, |
| 1010 | (long __user *) arg); |
| 1011 | |
| 1012 | #ifdef CONFIG_IDE_TASK_IOCTL |
| 1013 | case HDIO_DRIVE_TASKFILE: |
| 1014 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 1015 | return -EACCES; |
| 1016 | switch(drive->media) { |
| 1017 | case ide_disk: |
| 1018 | return ide_taskfile_ioctl(drive, cmd, arg); |
| 1019 | default: |
| 1020 | return -ENOMSG; |
| 1021 | } |
| 1022 | #endif /* CONFIG_IDE_TASK_IOCTL */ |
| 1023 | |
| 1024 | case HDIO_DRIVE_CMD: |
| 1025 | if (!capable(CAP_SYS_RAWIO)) |
| 1026 | return -EACCES; |
| 1027 | return ide_cmd_ioctl(drive, cmd, arg); |
| 1028 | |
| 1029 | case HDIO_DRIVE_TASK: |
| 1030 | if (!capable(CAP_SYS_RAWIO)) |
| 1031 | return -EACCES; |
| 1032 | return ide_task_ioctl(drive, cmd, arg); |
| 1033 | |
| 1034 | case HDIO_SCAN_HWIF: |
| 1035 | { |
| 1036 | hw_regs_t hw; |
| 1037 | int args[3]; |
| 1038 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; |
| 1039 | if (copy_from_user(args, p, 3 * sizeof(int))) |
| 1040 | return -EFAULT; |
| 1041 | memset(&hw, 0, sizeof(hw)); |
| 1042 | ide_init_hwif_ports(&hw, (unsigned long) args[0], |
| 1043 | (unsigned long) args[1], NULL); |
| 1044 | hw.irq = args[2]; |
Bartlomiej Zolnierkiewicz | 869c56e | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1045 | if (ide_register_hw(&hw, 0, NULL) == -1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | return -EIO; |
| 1047 | return 0; |
| 1048 | } |
| 1049 | case HDIO_UNREGISTER_HWIF: |
| 1050 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; |
| 1051 | /* (arg > MAX_HWIFS) checked in function */ |
| 1052 | ide_unregister(arg); |
| 1053 | return 0; |
| 1054 | case HDIO_SET_NICE: |
| 1055 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; |
| 1056 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) |
| 1057 | return -EPERM; |
| 1058 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; |
| 1059 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; |
| 1060 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { |
| 1061 | drive->dsc_overlap = 0; |
| 1062 | return -EPERM; |
| 1063 | } |
| 1064 | drive->nice1 = (arg >> IDE_NICE_1) & 1; |
| 1065 | return 0; |
| 1066 | case HDIO_DRIVE_RESET: |
| 1067 | { |
| 1068 | unsigned long flags; |
| 1069 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; |
| 1070 | |
| 1071 | /* |
| 1072 | * Abort the current command on the |
| 1073 | * group if there is one, taking |
| 1074 | * care not to allow anything else |
| 1075 | * to be queued and to die on the |
| 1076 | * spot if we miss one somehow |
| 1077 | */ |
| 1078 | |
| 1079 | spin_lock_irqsave(&ide_lock, flags); |
| 1080 | |
Alan Cox | 913759a | 2006-10-03 01:14:33 -0700 | [diff] [blame] | 1081 | if (HWGROUP(drive)->resetting) { |
| 1082 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1083 | return -EBUSY; |
| 1084 | } |
| 1085 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | ide_abort(drive, "drive reset"); |
| 1087 | |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 1088 | BUG_ON(HWGROUP(drive)->handler); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | |
| 1090 | /* Ensure nothing gets queued after we |
| 1091 | drop the lock. Reset will clear the busy */ |
| 1092 | |
| 1093 | HWGROUP(drive)->busy = 1; |
| 1094 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1095 | (void) ide_do_reset(drive); |
| 1096 | |
| 1097 | return 0; |
| 1098 | } |
| 1099 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | case HDIO_GET_BUSSTATE: |
| 1101 | if (!capable(CAP_SYS_ADMIN)) |
| 1102 | return -EACCES; |
| 1103 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) |
| 1104 | return -EFAULT; |
| 1105 | return 0; |
| 1106 | |
| 1107 | case HDIO_SET_BUSSTATE: |
| 1108 | if (!capable(CAP_SYS_ADMIN)) |
| 1109 | return -EACCES; |
| 1110 | if (HWIF(drive)->busproc) |
| 1111 | return HWIF(drive)->busproc(drive, (int)arg); |
| 1112 | return -EOPNOTSUPP; |
| 1113 | default: |
| 1114 | return -EINVAL; |
| 1115 | } |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1116 | |
| 1117 | read_val: |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 1118 | mutex_lock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1119 | spin_lock_irqsave(&ide_lock, flags); |
| 1120 | err = *val; |
| 1121 | spin_unlock_irqrestore(&ide_lock, flags); |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 1122 | mutex_unlock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1123 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
| 1124 | |
| 1125 | set_val: |
| 1126 | if (bdev != bdev->bd_contains) |
| 1127 | err = -EINVAL; |
| 1128 | else { |
| 1129 | if (!capable(CAP_SYS_ADMIN)) |
| 1130 | err = -EACCES; |
| 1131 | else { |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 1132 | mutex_lock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1133 | err = setfunc(drive, arg); |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 1134 | mutex_unlock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1135 | } |
| 1136 | } |
| 1137 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | } |
| 1139 | |
| 1140 | EXPORT_SYMBOL(generic_ide_ioctl); |
| 1141 | |
| 1142 | /* |
| 1143 | * stridx() returns the offset of c within s, |
| 1144 | * or -1 if c is '\0' or not found within s. |
| 1145 | */ |
| 1146 | static int __init stridx (const char *s, char c) |
| 1147 | { |
| 1148 | char *i = strchr(s, c); |
| 1149 | return (i && c) ? i - s : -1; |
| 1150 | } |
| 1151 | |
| 1152 | /* |
| 1153 | * match_parm() does parsing for ide_setup(): |
| 1154 | * |
| 1155 | * 1. the first char of s must be '='. |
| 1156 | * 2. if the remainder matches one of the supplied keywords, |
| 1157 | * the index (1 based) of the keyword is negated and returned. |
| 1158 | * 3. if the remainder is a series of no more than max_vals numbers |
| 1159 | * separated by commas, the numbers are saved in vals[] and a |
| 1160 | * count of how many were saved is returned. Base10 is assumed, |
| 1161 | * and base16 is allowed when prefixed with "0x". |
| 1162 | * 4. otherwise, zero is returned. |
| 1163 | */ |
| 1164 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) |
| 1165 | { |
| 1166 | static const char *decimal = "0123456789"; |
| 1167 | static const char *hex = "0123456789abcdef"; |
| 1168 | int i, n; |
| 1169 | |
| 1170 | if (*s++ == '=') { |
| 1171 | /* |
| 1172 | * Try matching against the supplied keywords, |
| 1173 | * and return -(index+1) if we match one |
| 1174 | */ |
| 1175 | if (keywords != NULL) { |
| 1176 | for (i = 0; *keywords != NULL; ++i) { |
| 1177 | if (!strcmp(s, *keywords++)) |
| 1178 | return -(i+1); |
| 1179 | } |
| 1180 | } |
| 1181 | /* |
| 1182 | * Look for a series of no more than "max_vals" |
| 1183 | * numeric values separated by commas, in base10, |
| 1184 | * or base16 when prefixed with "0x". |
| 1185 | * Return a count of how many were found. |
| 1186 | */ |
| 1187 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { |
| 1188 | vals[n] = i; |
| 1189 | while ((i = stridx(decimal, *++s)) >= 0) |
| 1190 | vals[n] = (vals[n] * 10) + i; |
| 1191 | if (*s == 'x' && !vals[n]) { |
| 1192 | while ((i = stridx(hex, *++s)) >= 0) |
| 1193 | vals[n] = (vals[n] * 0x10) + i; |
| 1194 | } |
| 1195 | if (++n == max_vals) |
| 1196 | break; |
| 1197 | if (*s == ',' || *s == ';') |
| 1198 | ++s; |
| 1199 | } |
| 1200 | if (!*s) |
| 1201 | return n; |
| 1202 | } |
| 1203 | return 0; /* zero = nothing matched */ |
| 1204 | } |
| 1205 | |
| 1206 | #ifdef CONFIG_BLK_DEV_ALI14XX |
Bartlomiej Zolnierkiewicz | 8491388 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 1207 | extern int probe_ali14xx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | extern int ali14xx_init(void); |
| 1209 | #endif |
| 1210 | #ifdef CONFIG_BLK_DEV_UMC8672 |
Bartlomiej Zolnierkiewicz | 8491388 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 1211 | extern int probe_umc8672; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | extern int umc8672_init(void); |
| 1213 | #endif |
| 1214 | #ifdef CONFIG_BLK_DEV_DTC2278 |
Bartlomiej Zolnierkiewicz | 8491388 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 1215 | extern int probe_dtc2278; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | extern int dtc2278_init(void); |
| 1217 | #endif |
| 1218 | #ifdef CONFIG_BLK_DEV_HT6560B |
Bartlomiej Zolnierkiewicz | 8491388 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 1219 | extern int probe_ht6560b; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | extern int ht6560b_init(void); |
| 1221 | #endif |
| 1222 | #ifdef CONFIG_BLK_DEV_QD65XX |
Bartlomiej Zolnierkiewicz | 8491388 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 1223 | extern int probe_qd65xx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | extern int qd65xx_init(void); |
| 1225 | #endif |
| 1226 | |
| 1227 | static int __initdata is_chipset_set[MAX_HWIFS]; |
| 1228 | |
| 1229 | /* |
| 1230 | * ide_setup() gets called VERY EARLY during initialization, |
| 1231 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". |
| 1232 | * |
| 1233 | * Remember to update Documentation/ide.txt if you change something here. |
| 1234 | */ |
| 1235 | static int __init ide_setup(char *s) |
| 1236 | { |
| 1237 | int i, vals[3]; |
| 1238 | ide_hwif_t *hwif; |
| 1239 | ide_drive_t *drive; |
| 1240 | unsigned int hw, unit; |
| 1241 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); |
| 1242 | const char max_hwif = '0' + (MAX_HWIFS - 1); |
| 1243 | |
| 1244 | |
| 1245 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ |
| 1246 | return 0; /* driver and not us */ |
| 1247 | |
| 1248 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) |
| 1249 | return 0; |
| 1250 | |
| 1251 | printk(KERN_INFO "ide_setup: %s", s); |
| 1252 | init_ide_data (); |
| 1253 | |
| 1254 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER |
| 1255 | if (!strcmp(s, "ide=doubler")) { |
| 1256 | extern int ide_doubler; |
| 1257 | |
| 1258 | printk(" : Enabled support for IDE doublers\n"); |
| 1259 | ide_doubler = 1; |
| 1260 | return 1; |
| 1261 | } |
| 1262 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ |
| 1263 | |
| 1264 | if (!strcmp(s, "ide=nodma")) { |
| 1265 | printk(" : Prevented DMA\n"); |
| 1266 | noautodma = 1; |
| 1267 | return 1; |
| 1268 | } |
| 1269 | |
Bartlomiej Zolnierkiewicz | 6d208b3 | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 1270 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | if (!strcmp(s, "ide=reverse")) { |
| 1272 | ide_scan_direction = 1; |
| 1273 | printk(" : Enabled support for IDE inverse scan order.\n"); |
| 1274 | return 1; |
| 1275 | } |
Bartlomiej Zolnierkiewicz | 6d208b3 | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 1276 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 1278 | #ifdef CONFIG_BLK_DEV_IDEACPI |
| 1279 | if (!strcmp(s, "ide=noacpi")) { |
| 1280 | //printk(" : Disable IDE ACPI support.\n"); |
| 1281 | ide_noacpi = 1; |
| 1282 | return 1; |
| 1283 | } |
| 1284 | if (!strcmp(s, "ide=acpigtf")) { |
| 1285 | //printk(" : Enable IDE ACPI _GTF support.\n"); |
| 1286 | ide_noacpitfs = 0; |
| 1287 | return 1; |
| 1288 | } |
| 1289 | if (!strcmp(s, "ide=acpionboot")) { |
| 1290 | //printk(" : Call IDE ACPI methods on boot.\n"); |
| 1291 | ide_noacpionboot = 0; |
| 1292 | return 1; |
| 1293 | } |
| 1294 | #endif /* CONFIG_BLK_DEV_IDEACPI */ |
| 1295 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | /* |
| 1297 | * Look for drive options: "hdx=" |
| 1298 | */ |
| 1299 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { |
| 1300 | const char *hd_words[] = { |
Bartlomiej Zolnierkiewicz | b6209a9 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 1301 | "none", "noprobe", "nowerr", "cdrom", "minus5", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | "autotune", "noautotune", "minus8", "swapdata", "bswap", |
Jens Axboe | 3619348 | 2006-07-28 08:54:59 +0200 | [diff] [blame] | 1303 | "noflush", "remap", "remap63", "scsi", NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | unit = s[2] - 'a'; |
| 1305 | hw = unit / MAX_DRIVES; |
| 1306 | unit = unit % MAX_DRIVES; |
| 1307 | hwif = &ide_hwifs[hw]; |
| 1308 | drive = &hwif->drives[unit]; |
| 1309 | if (strncmp(s + 4, "ide-", 4) == 0) { |
| 1310 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); |
| 1311 | goto done; |
| 1312 | } |
| 1313 | switch (match_parm(&s[3], hd_words, vals, 3)) { |
| 1314 | case -1: /* "none" */ |
| 1315 | case -2: /* "noprobe" */ |
| 1316 | drive->noprobe = 1; |
| 1317 | goto done; |
| 1318 | case -3: /* "nowerr" */ |
| 1319 | drive->bad_wstat = BAD_R_STAT; |
| 1320 | hwif->noprobe = 0; |
| 1321 | goto done; |
| 1322 | case -4: /* "cdrom" */ |
| 1323 | drive->present = 1; |
| 1324 | drive->media = ide_cdrom; |
| 1325 | /* an ATAPI device ignores DRDY */ |
| 1326 | drive->ready_stat = 0; |
| 1327 | hwif->noprobe = 0; |
| 1328 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | case -6: /* "autotune" */ |
| 1330 | drive->autotune = IDE_TUNE_AUTO; |
| 1331 | goto obsolete_option; |
| 1332 | case -7: /* "noautotune" */ |
| 1333 | drive->autotune = IDE_TUNE_NOAUTO; |
| 1334 | goto obsolete_option; |
| 1335 | case -9: /* "swapdata" */ |
| 1336 | case -10: /* "bswap" */ |
| 1337 | drive->bswap = 1; |
| 1338 | goto done; |
Jens Axboe | 3619348 | 2006-07-28 08:54:59 +0200 | [diff] [blame] | 1339 | case -11: /* noflush */ |
| 1340 | drive->noflush = 1; |
| 1341 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | case -12: /* "remap" */ |
| 1343 | drive->remap_0_to_1 = 1; |
| 1344 | goto done; |
| 1345 | case -13: /* "remap63" */ |
| 1346 | drive->sect0 = 63; |
| 1347 | goto done; |
| 1348 | case -14: /* "scsi" */ |
| 1349 | drive->scsi = 1; |
| 1350 | goto done; |
| 1351 | case 3: /* cyl,head,sect */ |
| 1352 | drive->media = ide_disk; |
| 1353 | drive->ready_stat = READY_STAT; |
| 1354 | drive->cyl = drive->bios_cyl = vals[0]; |
| 1355 | drive->head = drive->bios_head = vals[1]; |
| 1356 | drive->sect = drive->bios_sect = vals[2]; |
| 1357 | drive->present = 1; |
| 1358 | drive->forced_geom = 1; |
| 1359 | hwif->noprobe = 0; |
| 1360 | goto done; |
| 1361 | default: |
| 1362 | goto bad_option; |
| 1363 | } |
| 1364 | } |
| 1365 | |
| 1366 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') |
| 1367 | goto bad_option; |
| 1368 | /* |
| 1369 | * Look for bus speed option: "idebus=" |
| 1370 | */ |
| 1371 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { |
| 1372 | if (match_parm(&s[6], NULL, vals, 1) != 1) |
| 1373 | goto bad_option; |
| 1374 | if (vals[0] >= 20 && vals[0] <= 66) { |
| 1375 | idebus_parameter = vals[0]; |
| 1376 | } else |
| 1377 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); |
| 1378 | goto done; |
| 1379 | } |
| 1380 | /* |
| 1381 | * Look for interface options: "idex=" |
| 1382 | */ |
| 1383 | if (s[3] >= '0' && s[3] <= max_hwif) { |
| 1384 | /* |
| 1385 | * Be VERY CAREFUL changing this: note hardcoded indexes below |
| 1386 | * (-8, -9, -10) are reserved to ease the hardcoding. |
| 1387 | */ |
| 1388 | static const char *ide_words[] = { |
Bartlomiej Zolnierkiewicz | b6209a9 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 1389 | "noprobe", "serialize", "minus3", "minus4", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | "reset", "dma", "ata66", "minus8", "minus9", |
| 1391 | "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", |
| 1392 | "dtc2278", "umc8672", "ali14xx", NULL }; |
| 1393 | hw = s[3] - '0'; |
| 1394 | hwif = &ide_hwifs[hw]; |
| 1395 | i = match_parm(&s[4], ide_words, vals, 3); |
| 1396 | |
| 1397 | /* |
| 1398 | * Cryptic check to ensure chipset not already set for hwif. |
| 1399 | * Note: we can't depend on hwif->chipset here. |
| 1400 | */ |
| 1401 | if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { |
| 1402 | /* chipset already specified */ |
| 1403 | if (is_chipset_set[hw]) |
| 1404 | goto bad_option; |
| 1405 | if (i > -18 && i <= -11) { |
| 1406 | /* these drivers are for "ide0=" only */ |
| 1407 | if (hw != 0) |
| 1408 | goto bad_hwif; |
| 1409 | /* chipset already specified for 2nd port */ |
| 1410 | if (is_chipset_set[hw+1]) |
| 1411 | goto bad_option; |
| 1412 | } |
| 1413 | is_chipset_set[hw] = 1; |
| 1414 | printk("\n"); |
| 1415 | } |
| 1416 | |
| 1417 | switch (i) { |
| 1418 | #ifdef CONFIG_BLK_DEV_ALI14XX |
| 1419 | case -17: /* "ali14xx" */ |
| 1420 | probe_ali14xx = 1; |
| 1421 | goto done; |
| 1422 | #endif |
| 1423 | #ifdef CONFIG_BLK_DEV_UMC8672 |
| 1424 | case -16: /* "umc8672" */ |
| 1425 | probe_umc8672 = 1; |
| 1426 | goto done; |
| 1427 | #endif |
| 1428 | #ifdef CONFIG_BLK_DEV_DTC2278 |
| 1429 | case -15: /* "dtc2278" */ |
| 1430 | probe_dtc2278 = 1; |
| 1431 | goto done; |
| 1432 | #endif |
| 1433 | #ifdef CONFIG_BLK_DEV_CMD640 |
| 1434 | case -14: /* "cmd640_vlb" */ |
| 1435 | { |
| 1436 | extern int cmd640_vlb; /* flag for cmd640.c */ |
| 1437 | cmd640_vlb = 1; |
| 1438 | goto done; |
| 1439 | } |
| 1440 | #endif |
| 1441 | #ifdef CONFIG_BLK_DEV_HT6560B |
| 1442 | case -13: /* "ht6560b" */ |
| 1443 | probe_ht6560b = 1; |
| 1444 | goto done; |
| 1445 | #endif |
| 1446 | #ifdef CONFIG_BLK_DEV_QD65XX |
| 1447 | case -12: /* "qd65xx" */ |
| 1448 | probe_qd65xx = 1; |
| 1449 | goto done; |
| 1450 | #endif |
| 1451 | #ifdef CONFIG_BLK_DEV_4DRIVES |
| 1452 | case -11: /* "four" drives on one set of ports */ |
| 1453 | { |
| 1454 | ide_hwif_t *mate = &ide_hwifs[hw^1]; |
| 1455 | mate->drives[0].select.all ^= 0x20; |
| 1456 | mate->drives[1].select.all ^= 0x20; |
| 1457 | hwif->chipset = mate->chipset = ide_4drives; |
| 1458 | mate->irq = hwif->irq; |
| 1459 | memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); |
Bartlomiej Zolnierkiewicz | b6209a9 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 1460 | hwif->mate = mate; |
| 1461 | mate->mate = hwif; |
| 1462 | hwif->serialized = mate->serialized = 1; |
| 1463 | goto obsolete_option; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | } |
| 1465 | #endif /* CONFIG_BLK_DEV_4DRIVES */ |
| 1466 | case -10: /* minus10 */ |
| 1467 | case -9: /* minus9 */ |
| 1468 | case -8: /* minus8 */ |
Bartlomiej Zolnierkiewicz | b6209a9 | 2007-03-03 17:48:55 +0100 | [diff] [blame] | 1469 | case -4: |
| 1470 | case -3: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | goto bad_option; |
| 1472 | case -7: /* ata66 */ |
| 1473 | #ifdef CONFIG_BLK_DEV_IDEPCI |
Bartlomiej Zolnierkiewicz | 49521f9 | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 1474 | /* |
| 1475 | * Use ATA_CBL_PATA40_SHORT so drive side |
| 1476 | * cable detection is also overriden. |
| 1477 | */ |
| 1478 | hwif->cbl = ATA_CBL_PATA40_SHORT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | goto obsolete_option; |
| 1480 | #else |
| 1481 | goto bad_hwif; |
| 1482 | #endif |
| 1483 | case -6: /* dma */ |
| 1484 | hwif->autodma = 1; |
| 1485 | goto obsolete_option; |
| 1486 | case -5: /* "reset" */ |
| 1487 | hwif->reset = 1; |
| 1488 | goto obsolete_option; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1489 | case -2: /* "serialize" */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | hwif->mate = &ide_hwifs[hw^1]; |
| 1491 | hwif->mate->mate = hwif; |
| 1492 | hwif->serialized = hwif->mate->serialized = 1; |
| 1493 | goto obsolete_option; |
| 1494 | |
| 1495 | case -1: /* "noprobe" */ |
| 1496 | hwif->noprobe = 1; |
| 1497 | goto done; |
| 1498 | |
| 1499 | case 1: /* base */ |
| 1500 | vals[1] = vals[0] + 0x206; /* default ctl */ |
| 1501 | case 2: /* base,ctl */ |
| 1502 | vals[2] = 0; /* default irq = probe for it */ |
| 1503 | case 3: /* base,ctl,irq */ |
| 1504 | hwif->hw.irq = vals[2]; |
| 1505 | ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq); |
| 1506 | memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports)); |
| 1507 | hwif->irq = vals[2]; |
| 1508 | hwif->noprobe = 0; |
| 1509 | hwif->chipset = ide_forced; |
| 1510 | goto obsolete_option; |
| 1511 | |
| 1512 | case 0: goto bad_option; |
| 1513 | default: |
| 1514 | printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); |
| 1515 | return 1; |
| 1516 | } |
| 1517 | } |
| 1518 | bad_option: |
| 1519 | printk(" -- BAD OPTION\n"); |
| 1520 | return 1; |
| 1521 | obsolete_option: |
| 1522 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); |
| 1523 | return 1; |
| 1524 | bad_hwif: |
| 1525 | printk("-- NOT SUPPORTED ON ide%d", hw); |
| 1526 | done: |
| 1527 | printk("\n"); |
| 1528 | return 1; |
| 1529 | } |
| 1530 | |
Al Viro | eb79722 | 2007-02-01 13:52:38 +0000 | [diff] [blame] | 1531 | extern void __init pnpide_init(void); |
| 1532 | extern void __exit pnpide_exit(void); |
| 1533 | extern void __init h8300_ide_init(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | |
| 1535 | /* |
| 1536 | * probe_for_hwifs() finds/initializes "known" IDE interfaces |
| 1537 | */ |
| 1538 | static void __init probe_for_hwifs (void) |
| 1539 | { |
Bartlomiej Zolnierkiewicz | 6d208b3 | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 1540 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | ide_scan_pcibus(ide_scan_direction); |
Bartlomiej Zolnierkiewicz | 6d208b3 | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 1542 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | |
| 1544 | #ifdef CONFIG_ETRAX_IDE |
| 1545 | { |
| 1546 | extern void init_e100_ide(void); |
| 1547 | init_e100_ide(); |
| 1548 | } |
| 1549 | #endif /* CONFIG_ETRAX_IDE */ |
| 1550 | #ifdef CONFIG_BLK_DEV_CMD640 |
| 1551 | { |
| 1552 | extern void ide_probe_for_cmd640x(void); |
| 1553 | ide_probe_for_cmd640x(); |
| 1554 | } |
| 1555 | #endif /* CONFIG_BLK_DEV_CMD640 */ |
| 1556 | #ifdef CONFIG_BLK_DEV_IDE_PMAC |
| 1557 | { |
Andrew Morton | 9e5755b | 2007-03-03 17:48:54 +0100 | [diff] [blame] | 1558 | extern int pmac_ide_probe(void); |
| 1559 | (void)pmac_ide_probe(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | } |
| 1561 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ |
| 1562 | #ifdef CONFIG_BLK_DEV_GAYLE |
| 1563 | { |
| 1564 | extern void gayle_init(void); |
| 1565 | gayle_init(); |
| 1566 | } |
| 1567 | #endif /* CONFIG_BLK_DEV_GAYLE */ |
| 1568 | #ifdef CONFIG_BLK_DEV_FALCON_IDE |
| 1569 | { |
| 1570 | extern void falconide_init(void); |
| 1571 | falconide_init(); |
| 1572 | } |
| 1573 | #endif /* CONFIG_BLK_DEV_FALCON_IDE */ |
| 1574 | #ifdef CONFIG_BLK_DEV_MAC_IDE |
| 1575 | { |
| 1576 | extern void macide_init(void); |
| 1577 | macide_init(); |
| 1578 | } |
| 1579 | #endif /* CONFIG_BLK_DEV_MAC_IDE */ |
| 1580 | #ifdef CONFIG_BLK_DEV_Q40IDE |
| 1581 | { |
| 1582 | extern void q40ide_init(void); |
| 1583 | q40ide_init(); |
| 1584 | } |
| 1585 | #endif /* CONFIG_BLK_DEV_Q40IDE */ |
| 1586 | #ifdef CONFIG_BLK_DEV_BUDDHA |
| 1587 | { |
| 1588 | extern void buddha_init(void); |
| 1589 | buddha_init(); |
| 1590 | } |
| 1591 | #endif /* CONFIG_BLK_DEV_BUDDHA */ |
| 1592 | #ifdef CONFIG_BLK_DEV_IDEPNP |
| 1593 | pnpide_init(); |
| 1594 | #endif |
| 1595 | #ifdef CONFIG_H8300 |
| 1596 | h8300_ide_init(); |
| 1597 | #endif |
| 1598 | } |
| 1599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | /* |
| 1601 | * Probe module |
| 1602 | */ |
| 1603 | |
| 1604 | EXPORT_SYMBOL(ide_lock); |
| 1605 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1606 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
| 1607 | { |
| 1608 | return 1; |
| 1609 | } |
| 1610 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 1611 | static char *media_string(ide_drive_t *drive) |
| 1612 | { |
| 1613 | switch (drive->media) { |
| 1614 | case ide_disk: |
| 1615 | return "disk"; |
| 1616 | case ide_cdrom: |
| 1617 | return "cdrom"; |
| 1618 | case ide_tape: |
| 1619 | return "tape"; |
| 1620 | case ide_floppy: |
| 1621 | return "floppy"; |
Danny Kukawka | a7a832d | 2007-04-10 22:39:14 +0200 | [diff] [blame] | 1622 | case ide_optical: |
| 1623 | return "optical"; |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 1624 | default: |
| 1625 | return "UNKNOWN"; |
| 1626 | } |
| 1627 | } |
| 1628 | |
| 1629 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 1630 | { |
| 1631 | ide_drive_t *drive = to_ide_device(dev); |
| 1632 | return sprintf(buf, "%s\n", media_string(drive)); |
| 1633 | } |
| 1634 | |
| 1635 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 1636 | { |
| 1637 | ide_drive_t *drive = to_ide_device(dev); |
| 1638 | return sprintf(buf, "%s\n", drive->name); |
| 1639 | } |
| 1640 | |
| 1641 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 1642 | { |
| 1643 | ide_drive_t *drive = to_ide_device(dev); |
| 1644 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); |
| 1645 | } |
| 1646 | |
| 1647 | static struct device_attribute ide_dev_attrs[] = { |
| 1648 | __ATTR_RO(media), |
| 1649 | __ATTR_RO(drivename), |
| 1650 | __ATTR_RO(modalias), |
| 1651 | __ATTR_NULL |
| 1652 | }; |
| 1653 | |
| 1654 | static int ide_uevent(struct device *dev, char **envp, int num_envp, |
| 1655 | char *buffer, int buffer_size) |
| 1656 | { |
| 1657 | ide_drive_t *drive = to_ide_device(dev); |
| 1658 | int i = 0; |
| 1659 | int length = 0; |
| 1660 | |
| 1661 | add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, |
| 1662 | "MEDIA=%s", media_string(drive)); |
| 1663 | add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, |
| 1664 | "DRIVENAME=%s", drive->name); |
| 1665 | add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, |
| 1666 | "MODALIAS=ide:m-%s", media_string(drive)); |
| 1667 | envp[i] = NULL; |
| 1668 | return 0; |
| 1669 | } |
| 1670 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1671 | static int generic_ide_probe(struct device *dev) |
| 1672 | { |
| 1673 | ide_drive_t *drive = to_ide_device(dev); |
| 1674 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 1675 | |
| 1676 | return drv->probe ? drv->probe(drive) : -ENODEV; |
| 1677 | } |
| 1678 | |
| 1679 | static int generic_ide_remove(struct device *dev) |
| 1680 | { |
| 1681 | ide_drive_t *drive = to_ide_device(dev); |
| 1682 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 1683 | |
| 1684 | if (drv->remove) |
| 1685 | drv->remove(drive); |
| 1686 | |
| 1687 | return 0; |
| 1688 | } |
| 1689 | |
| 1690 | static void generic_ide_shutdown(struct device *dev) |
| 1691 | { |
| 1692 | ide_drive_t *drive = to_ide_device(dev); |
| 1693 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 1694 | |
| 1695 | if (dev->driver && drv->shutdown) |
| 1696 | drv->shutdown(drive); |
| 1697 | } |
| 1698 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | struct bus_type ide_bus_type = { |
| 1700 | .name = "ide", |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1701 | .match = ide_bus_match, |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 1702 | .uevent = ide_uevent, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1703 | .probe = generic_ide_probe, |
| 1704 | .remove = generic_ide_remove, |
| 1705 | .shutdown = generic_ide_shutdown, |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 1706 | .dev_attrs = ide_dev_attrs, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1707 | .suspend = generic_ide_suspend, |
| 1708 | .resume = generic_ide_resume, |
| 1709 | }; |
| 1710 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1711 | EXPORT_SYMBOL_GPL(ide_bus_type); |
| 1712 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | /* |
| 1714 | * This is gets invoked once during initialization, to set *everything* up |
| 1715 | */ |
| 1716 | static int __init ide_init(void) |
| 1717 | { |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 1718 | int ret; |
| 1719 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | system_bus_speed = ide_system_bus_speed(); |
| 1722 | |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 1723 | ret = bus_register(&ide_bus_type); |
| 1724 | if (ret < 0) { |
| 1725 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); |
| 1726 | return ret; |
| 1727 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | |
| 1729 | init_ide_data(); |
| 1730 | |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 1731 | proc_ide_create(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1732 | |
| 1733 | #ifdef CONFIG_BLK_DEV_ALI14XX |
| 1734 | if (probe_ali14xx) |
| 1735 | (void)ali14xx_init(); |
| 1736 | #endif |
| 1737 | #ifdef CONFIG_BLK_DEV_UMC8672 |
| 1738 | if (probe_umc8672) |
| 1739 | (void)umc8672_init(); |
| 1740 | #endif |
| 1741 | #ifdef CONFIG_BLK_DEV_DTC2278 |
| 1742 | if (probe_dtc2278) |
| 1743 | (void)dtc2278_init(); |
| 1744 | #endif |
| 1745 | #ifdef CONFIG_BLK_DEV_HT6560B |
| 1746 | if (probe_ht6560b) |
| 1747 | (void)ht6560b_init(); |
| 1748 | #endif |
| 1749 | #ifdef CONFIG_BLK_DEV_QD65XX |
| 1750 | if (probe_qd65xx) |
| 1751 | (void)qd65xx_init(); |
| 1752 | #endif |
| 1753 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | /* Probe for special PCI and other "known" interface chipsets. */ |
| 1755 | probe_for_hwifs(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1756 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | return 0; |
| 1758 | } |
| 1759 | |
| 1760 | #ifdef MODULE |
| 1761 | static char *options = NULL; |
| 1762 | module_param(options, charp, 0); |
| 1763 | MODULE_LICENSE("GPL"); |
| 1764 | |
| 1765 | static void __init parse_options (char *line) |
| 1766 | { |
| 1767 | char *next = line; |
| 1768 | |
| 1769 | if (line == NULL || !*line) |
| 1770 | return; |
| 1771 | while ((line = next) != NULL) { |
| 1772 | if ((next = strchr(line,' ')) != NULL) |
| 1773 | *next++ = 0; |
| 1774 | if (!ide_setup(line)) |
| 1775 | printk (KERN_INFO "Unknown option '%s'\n", line); |
| 1776 | } |
| 1777 | } |
| 1778 | |
Sam Ravnborg | fbd8ad3 | 2006-03-25 03:07:11 -0800 | [diff] [blame] | 1779 | int __init init_module (void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | { |
| 1781 | parse_options(options); |
| 1782 | return ide_init(); |
| 1783 | } |
| 1784 | |
Al Viro | eb79722 | 2007-02-01 13:52:38 +0000 | [diff] [blame] | 1785 | void __exit cleanup_module (void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | { |
| 1787 | int index; |
| 1788 | |
| 1789 | for (index = 0; index < MAX_HWIFS; ++index) |
| 1790 | ide_unregister(index); |
| 1791 | |
Tejun Heo | 6855036 | 2007-01-27 13:47:02 +0100 | [diff] [blame] | 1792 | #ifdef CONFIG_BLK_DEV_IDEPNP |
| 1793 | pnpide_exit(); |
| 1794 | #endif |
| 1795 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | proc_ide_destroy(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | |
| 1798 | bus_unregister(&ide_bus_type); |
| 1799 | } |
| 1800 | |
| 1801 | #else /* !MODULE */ |
| 1802 | |
| 1803 | __setup("", ide_setup); |
| 1804 | |
| 1805 | module_init(ide_init); |
| 1806 | |
| 1807 | #endif /* MODULE */ |