Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Bartlomiej Zolnierkiewicz | 59bca8c | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 2 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) |
| 3 | * Copyrifht (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | /* |
| 7 | * Mostly written by Mark Lord <mlord@pobox.com> |
| 8 | * and Gadi Oxman <gadio@netvision.net.il> |
| 9 | * and Andre Hedrick <andre@linux-ide.org> |
| 10 | * |
| 11 | * See linux/MAINTAINERS for address of current maintainer. |
| 12 | * |
| 13 | * This is the multiple IDE interface driver, as evolved from hd.c. |
| 14 | * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs |
| 15 | * (usually 14 & 15). |
| 16 | * There can be up to two drives per interface, as per the ATA-2 spec. |
| 17 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | * ... |
| 19 | * |
| 20 | * From hd.c: |
| 21 | * | |
| 22 | * | It traverses the request-list, using interrupts to jump between functions. |
| 23 | * | As nearly all functions can be called within interrupts, we may not sleep. |
| 24 | * | Special care is recommended. Have Fun! |
| 25 | * | |
| 26 | * | modified by Drew Eckhardt to check nr of hd's from the CMOS. |
| 27 | * | |
| 28 | * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug |
| 29 | * | in the early extended-partition checks and added DM partitions. |
| 30 | * | |
| 31 | * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI). |
| 32 | * | |
| 33 | * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads", |
| 34 | * | and general streamlining by Mark Lord (mlord@pobox.com). |
| 35 | * |
| 36 | * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by: |
| 37 | * |
| 38 | * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg) |
| 39 | * Delman Lee (delman@ieee.org) ("Mr. atdisk2") |
| 40 | * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom) |
| 41 | * |
| 42 | * This was a rewrite of just about everything from hd.c, though some original |
| 43 | * code is still sprinkled about. Think of it as a major evolution, with |
| 44 | * inspiration from lots of linux users, esp. hamish@zot.apana.org.au |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | */ |
| 46 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #define _IDE_C /* Tell ide.h it's really us */ |
| 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <linux/module.h> |
| 50 | #include <linux/types.h> |
| 51 | #include <linux/string.h> |
| 52 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <linux/interrupt.h> |
| 54 | #include <linux/major.h> |
| 55 | #include <linux/errno.h> |
| 56 | #include <linux/genhd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include <linux/slab.h> |
| 58 | #include <linux/init.h> |
| 59 | #include <linux/pci.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #include <linux/ide.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include <linux/completion.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | #include <linux/device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| 64 | |
| 65 | /* default maximum number of failures */ |
| 66 | #define IDE_DEFAULT_MAX_FAILURES 1 |
| 67 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 68 | struct class *ide_port_class; |
| 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, |
| 71 | IDE2_MAJOR, IDE3_MAJOR, |
| 72 | IDE4_MAJOR, IDE5_MAJOR, |
| 73 | IDE6_MAJOR, IDE7_MAJOR, |
| 74 | IDE8_MAJOR, IDE9_MAJOR }; |
| 75 | |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 76 | DEFINE_MUTEX(ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
Bartlomiej Zolnierkiewicz | 931ee0d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 78 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
| 79 | EXPORT_SYMBOL(ide_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 81 | static void ide_port_init_devices_data(ide_hwif_t *); |
| 82 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | /* |
| 84 | * Do not even *think* about calling this! |
| 85 | */ |
Bartlomiej Zolnierkiewicz | cbb010c | 2008-01-26 20:13:06 +0100 | [diff] [blame] | 86 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | /* bulk initialize hwif & drive info with zeros */ |
| 89 | memset(hwif, 0, sizeof(ide_hwif_t)); |
| 90 | |
| 91 | /* fill in any non-zero initial values */ |
| 92 | hwif->index = index; |
| 93 | hwif->major = ide_hwif_to_major[index]; |
| 94 | |
| 95 | hwif->name[0] = 'i'; |
| 96 | hwif->name[1] = 'd'; |
| 97 | hwif->name[2] = 'e'; |
| 98 | hwif->name[3] = '0' + index; |
| 99 | |
| 100 | hwif->bus_state = BUSSTATE_ON; |
| 101 | |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 102 | init_completion(&hwif->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 104 | hwif->tp_ops = &default_tp_ops; |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 105 | |
| 106 | ide_port_init_devices_data(hwif); |
| 107 | } |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 108 | |
| 109 | static void ide_port_init_devices_data(ide_hwif_t *hwif) |
| 110 | { |
| 111 | int unit; |
| 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| 114 | ide_drive_t *drive = &hwif->drives[unit]; |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 115 | u8 j = (hwif->index * MAX_DRIVES) + unit; |
| 116 | |
| 117 | memset(drive, 0, sizeof(*drive)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
| 119 | drive->media = ide_disk; |
| 120 | drive->select.all = (unit<<4)|0xa0; |
| 121 | drive->hwif = hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | drive->ready_stat = READY_STAT; |
| 123 | drive->bad_wstat = BAD_W_STAT; |
| 124 | drive->special.b.recalibrate = 1; |
| 125 | drive->special.b.set_geometry = 1; |
| 126 | drive->name[0] = 'h'; |
| 127 | drive->name[1] = 'd'; |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 128 | drive->name[2] = 'a' + j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | INIT_LIST_HEAD(&drive->list); |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 132 | init_completion(&drive->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | } |
| 134 | } |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 135 | |
Bartlomiej Zolnierkiewicz | fbd1308 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 136 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
Bartlomiej Zolnierkiewicz | 96e5ad3 | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 137 | { |
| 138 | ide_hwgroup_t *hwgroup = hwif->hwgroup; |
| 139 | |
| 140 | spin_lock_irq(&ide_lock); |
| 141 | /* |
| 142 | * Remove us from the hwgroup, and free |
| 143 | * the hwgroup if we were the only member |
| 144 | */ |
| 145 | if (hwif->next == hwif) { |
| 146 | BUG_ON(hwgroup->hwif != hwif); |
| 147 | kfree(hwgroup); |
| 148 | } else { |
| 149 | /* There is another interface in hwgroup. |
| 150 | * Unlink us, and set hwgroup->drive and ->hwif to |
| 151 | * something sane. |
| 152 | */ |
| 153 | ide_hwif_t *g = hwgroup->hwif; |
| 154 | |
| 155 | while (g->next != hwif) |
| 156 | g = g->next; |
| 157 | g->next = hwif->next; |
| 158 | if (hwgroup->hwif == hwif) { |
| 159 | /* Chose a random hwif for hwgroup->hwif. |
| 160 | * It's guaranteed that there are no drives |
| 161 | * left in the hwgroup. |
| 162 | */ |
| 163 | BUG_ON(hwgroup->drive != NULL); |
| 164 | hwgroup->hwif = g; |
| 165 | } |
| 166 | BUG_ON(hwgroup->hwif == hwif); |
| 167 | } |
| 168 | spin_unlock_irq(&ide_lock); |
| 169 | } |
| 170 | |
Bartlomiej Zolnierkiewicz | 71bf9f6 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 171 | /* Called with ide_lock held. */ |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 172 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
Bartlomiej Zolnierkiewicz | 71bf9f6 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 173 | { |
| 174 | int i; |
| 175 | |
| 176 | for (i = 0; i < MAX_DRIVES; i++) { |
| 177 | ide_drive_t *drive = &hwif->drives[i]; |
| 178 | |
| 179 | if (drive->present) { |
| 180 | spin_unlock_irq(&ide_lock); |
| 181 | device_unregister(&drive->gendev); |
| 182 | wait_for_completion(&drive->gendev_rel_comp); |
| 183 | spin_lock_irq(&ide_lock); |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 188 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
| 189 | { |
| 190 | mutex_lock(&ide_cfg_mtx); |
| 191 | spin_lock_irq(&ide_lock); |
| 192 | __ide_port_unregister_devices(hwif); |
| 193 | hwif->present = 0; |
| 194 | ide_port_init_devices_data(hwif); |
| 195 | spin_unlock_irq(&ide_lock); |
| 196 | mutex_unlock(&ide_cfg_mtx); |
| 197 | } |
| 198 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); |
| 199 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | /** |
Sergei Shtylylov | 020e322 | 2006-10-03 01:14:13 -0700 | [diff] [blame] | 201 | * ide_unregister - free an IDE interface |
Bartlomiej Zolnierkiewicz | 387750c | 2008-04-27 15:38:31 +0200 | [diff] [blame] | 202 | * @hwif: IDE interface |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | * |
| 204 | * Perform the final unregister of an IDE interface. At the moment |
| 205 | * we don't refcount interfaces so this will also get split up. |
| 206 | * |
| 207 | * Locking: |
| 208 | * The caller must not hold the IDE locks |
| 209 | * The drive present/vanishing is not yet properly locked |
| 210 | * Take care with the callbacks. These have been split to avoid |
| 211 | * deadlocking the IDE layer. The shutdown callback is called |
| 212 | * before we take the lock and free resources. It is up to the |
| 213 | * 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] | 214 | * the interface will not be reopened (present/vanishing locking |
| 215 | * 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] | 216 | * call the cleanup callback with the ide locks held. |
| 217 | * |
| 218 | * Unregister restores the hwif structures to the default state. |
| 219 | * This is raving bonkers. |
| 220 | */ |
| 221 | |
Bartlomiej Zolnierkiewicz | 387750c | 2008-04-27 15:38:31 +0200 | [diff] [blame] | 222 | void ide_unregister(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { |
Bartlomiej Zolnierkiewicz | 387750c | 2008-04-27 15:38:31 +0200 | [diff] [blame] | 224 | ide_hwif_t *g; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | ide_hwgroup_t *hwgroup; |
Bartlomiej Zolnierkiewicz | 71bf9f6 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 226 | int irq_count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | BUG_ON(in_interrupt()); |
| 229 | BUG_ON(irqs_disabled()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
Bartlomiej Zolnierkiewicz | bd8a59e | 2008-07-05 20:30:51 +0200 | [diff] [blame] | 231 | mutex_lock(&ide_cfg_mtx); |
| 232 | |
| 233 | spin_lock_irq(&ide_lock); |
| 234 | if (hwif->present) { |
| 235 | __ide_port_unregister_devices(hwif); |
| 236 | hwif->present = 0; |
| 237 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | spin_unlock_irq(&ide_lock); |
| 239 | |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 240 | ide_proc_unregister_port(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
| 242 | hwgroup = hwif->hwgroup; |
| 243 | /* |
| 244 | * free the irq if we were the only hwif using it |
| 245 | */ |
| 246 | g = hwgroup->hwif; |
| 247 | do { |
| 248 | if (g->irq == hwif->irq) |
| 249 | ++irq_count; |
| 250 | g = g->next; |
| 251 | } while (g != hwgroup->hwif); |
| 252 | if (irq_count == 1) |
| 253 | free_irq(hwif->irq, hwgroup); |
| 254 | |
Bartlomiej Zolnierkiewicz | 96e5ad3 | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 255 | ide_remove_port_from_hwgroup(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 257 | device_unregister(hwif->portdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | device_unregister(&hwif->gendev); |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 259 | wait_for_completion(&hwif->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
| 261 | /* |
| 262 | * Remove us from the kernel's knowledge |
| 263 | */ |
| 264 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); |
| 265 | kfree(hwif->sg_table); |
| 266 | unregister_blkdev(hwif->major, hwif->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
Bartlomiej Zolnierkiewicz | 93de00f | 2008-04-18 00:46:24 +0200 | [diff] [blame] | 268 | if (hwif->dma_base) |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 269 | ide_release_dma_engine(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
Bartlomiej Zolnierkiewicz | 2b54ed9 | 2008-07-05 20:30:51 +0200 | [diff] [blame] | 271 | spin_lock_irq(&ide_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | /* restore hwif data to pristine status */ |
Bartlomiej Zolnierkiewicz | 387750c | 2008-04-27 15:38:31 +0200 | [diff] [blame] | 273 | ide_init_port_data(hwif, hwif->index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | spin_unlock_irq(&ide_lock); |
Bartlomiej Zolnierkiewicz | 2b54ed9 | 2008-07-05 20:30:51 +0200 | [diff] [blame] | 275 | |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 276 | mutex_unlock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | } |
| 278 | |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 279 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
| 280 | { |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 281 | memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 282 | hwif->irq = hw->irq; |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 283 | hwif->chipset = hw->chipset; |
Bartlomiej Zolnierkiewicz | c56c564 | 2008-07-16 20:33:40 +0200 | [diff] [blame] | 284 | hwif->dev = hw->dev; |
| 285 | hwif->gendev.parent = hw->parent ? hw->parent : hw->dev; |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 286 | hwif->ack_intr = hw->ack_intr; |
Bartlomiej Zolnierkiewicz | d6276b5 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 287 | hwif->config_data = hw->config; |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 288 | } |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 289 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | /* |
| 291 | * Locks for IDE setting functionality |
| 292 | */ |
| 293 | |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 294 | DEFINE_MUTEX(ide_setting_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 296 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | * ide_spin_wait_hwgroup - wait for group |
| 300 | * @drive: drive in the group |
| 301 | * |
| 302 | * Wait for an IDE device group to go non busy and then return |
| 303 | * holding the ide_lock which guards the hwgroup->busy status |
| 304 | * and right to use it. |
| 305 | */ |
| 306 | |
| 307 | int ide_spin_wait_hwgroup (ide_drive_t *drive) |
| 308 | { |
| 309 | ide_hwgroup_t *hwgroup = HWGROUP(drive); |
| 310 | unsigned long timeout = jiffies + (3 * HZ); |
| 311 | |
| 312 | spin_lock_irq(&ide_lock); |
| 313 | |
| 314 | while (hwgroup->busy) { |
| 315 | unsigned long lflags; |
| 316 | spin_unlock_irq(&ide_lock); |
| 317 | local_irq_set(lflags); |
| 318 | if (time_after(jiffies, timeout)) { |
| 319 | local_irq_restore(lflags); |
| 320 | printk(KERN_ERR "%s: channel busy\n", drive->name); |
| 321 | return -EBUSY; |
| 322 | } |
| 323 | local_irq_restore(lflags); |
| 324 | spin_lock_irq(&ide_lock); |
| 325 | } |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); |
| 330 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 331 | int set_io_32bit(ide_drive_t *drive, int arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 333 | if (drive->no_io_32bit) |
| 334 | return -EPERM; |
| 335 | |
| 336 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) |
| 337 | return -EINVAL; |
| 338 | |
Bartlomiej Zolnierkiewicz | 644a9d7 | 2007-12-12 23:32:00 +0100 | [diff] [blame] | 339 | if (ide_spin_wait_hwgroup(drive)) |
| 340 | return -EBUSY; |
| 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | drive->io_32bit = arg; |
Bartlomiej Zolnierkiewicz | 644a9d7 | 2007-12-12 23:32:00 +0100 | [diff] [blame] | 343 | |
| 344 | spin_unlock_irq(&ide_lock); |
| 345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | return 0; |
| 347 | } |
| 348 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 349 | static int set_ksettings(ide_drive_t *drive, int arg) |
| 350 | { |
| 351 | if (arg < 0 || arg > 1) |
| 352 | return -EINVAL; |
| 353 | |
| 354 | if (ide_spin_wait_hwgroup(drive)) |
| 355 | return -EBUSY; |
| 356 | drive->keep_settings = arg; |
| 357 | spin_unlock_irq(&ide_lock); |
| 358 | |
| 359 | return 0; |
| 360 | } |
| 361 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 362 | int set_using_dma(ide_drive_t *drive, int arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | { |
| 364 | #ifdef CONFIG_BLK_DEV_IDEDMA |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 365 | ide_hwif_t *hwif = drive->hwif; |
| 366 | int err = -EPERM; |
| 367 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 368 | if (arg < 0 || arg > 1) |
| 369 | return -EINVAL; |
| 370 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | if (!drive->id || !(drive->id->capability & 1)) |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 372 | goto out; |
| 373 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 374 | if (hwif->dma_ops == NULL) |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 375 | goto out; |
| 376 | |
| 377 | err = -EBUSY; |
| 378 | if (ide_spin_wait_hwgroup(drive)) |
| 379 | goto out; |
| 380 | /* |
| 381 | * set ->busy flag, unlock and let it ride |
| 382 | */ |
| 383 | hwif->hwgroup->busy = 1; |
| 384 | spin_unlock_irq(&ide_lock); |
| 385 | |
| 386 | err = 0; |
| 387 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | if (arg) { |
Bartlomiej Zolnierkiewicz | 23b1bd4 | 2008-01-25 22:17:19 +0100 | [diff] [blame] | 389 | if (ide_set_dma(drive)) |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 390 | err = -EIO; |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 391 | } else |
| 392 | ide_dma_off(drive); |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 393 | |
| 394 | /* |
| 395 | * lock, clear ->busy flag and unlock before leaving |
| 396 | */ |
| 397 | spin_lock_irq(&ide_lock); |
| 398 | hwif->hwgroup->busy = 0; |
| 399 | spin_unlock_irq(&ide_lock); |
| 400 | out: |
| 401 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | #else |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 403 | if (arg < 0 || arg > 1) |
| 404 | return -EINVAL; |
| 405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | return -EPERM; |
| 407 | #endif |
| 408 | } |
| 409 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 410 | int set_pio_mode(ide_drive_t *drive, int arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | { |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 412 | struct request *rq; |
Bartlomiej Zolnierkiewicz | 784506c | 2008-04-26 17:36:43 +0200 | [diff] [blame] | 413 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 414 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 416 | if (arg < 0 || arg > 255) |
| 417 | return -EINVAL; |
| 418 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 419 | if (port_ops == NULL || port_ops->set_pio_mode == NULL || |
Bartlomiej Zolnierkiewicz | 784506c | 2008-04-26 17:36:43 +0200 | [diff] [blame] | 420 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | return -ENOSYS; |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | if (drive->special.b.set_tune) |
| 424 | return -EBUSY; |
Bartlomiej Zolnierkiewicz | 145b75e | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 425 | |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 426 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 427 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
Bartlomiej Zolnierkiewicz | 145b75e | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | drive->tune_req = (u8) arg; |
| 430 | drive->special.b.set_tune = 1; |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 431 | |
| 432 | blk_execute_rq(drive->queue, NULL, rq, 0); |
| 433 | blk_put_request(rq); |
| 434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | return 0; |
| 436 | } |
| 437 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 438 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
| 439 | { |
| 440 | if (drive->no_unmask) |
| 441 | return -EPERM; |
| 442 | |
| 443 | if (arg < 0 || arg > 1) |
| 444 | return -EINVAL; |
| 445 | |
| 446 | if (ide_spin_wait_hwgroup(drive)) |
| 447 | return -EBUSY; |
| 448 | drive->unmask = arg; |
| 449 | spin_unlock_irq(&ide_lock); |
| 450 | |
| 451 | return 0; |
| 452 | } |
| 453 | |
David Brownell | b887d2e | 2006-08-14 23:11:05 -0700 | [diff] [blame] | 454 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | { |
| 456 | ide_drive_t *drive = dev->driver_data; |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 457 | ide_hwif_t *hwif = HWIF(drive); |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 458 | struct request *rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | struct request_pm_state rqpm; |
| 460 | ide_task_t args; |
Shaohua Li | 5e32132 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 461 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 463 | /* Call ACPI _GTM only once */ |
| 464 | if (!(drive->dn % 2)) |
| 465 | ide_acpi_get_timing(hwif); |
| 466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | memset(&rqpm, 0, sizeof(rqpm)); |
| 468 | memset(&args, 0, sizeof(args)); |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 469 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 470 | rq->cmd_type = REQ_TYPE_PM_SUSPEND; |
| 471 | rq->special = &args; |
| 472 | rq->data = &rqpm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | rqpm.pm_step = ide_pm_state_start_suspend; |
David Brownell | b887d2e | 2006-08-14 23:11:05 -0700 | [diff] [blame] | 474 | if (mesg.event == PM_EVENT_PRETHAW) |
| 475 | mesg.event = PM_EVENT_FREEZE; |
| 476 | rqpm.pm_state = mesg.event; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 478 | ret = blk_execute_rq(drive->queue, NULL, rq, 0); |
| 479 | blk_put_request(rq); |
Shaohua Li | 5e32132 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 480 | /* only call ACPI _PS3 after both drivers are suspended */ |
| 481 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present |
| 482 | && hwif->drives[1].present) |
| 483 | || !hwif->drives[0].present |
| 484 | || !hwif->drives[1].present)) |
| 485 | ide_acpi_set_state(hwif, 0); |
| 486 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | } |
| 488 | |
| 489 | static int generic_ide_resume(struct device *dev) |
| 490 | { |
| 491 | ide_drive_t *drive = dev->driver_data; |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 492 | ide_hwif_t *hwif = HWIF(drive); |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 493 | struct request *rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | struct request_pm_state rqpm; |
| 495 | ide_task_t args; |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 496 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 498 | /* Call ACPI _STM only once */ |
Shaohua Li | 5e32132 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 499 | if (!(drive->dn % 2)) { |
| 500 | ide_acpi_set_state(hwif, 1); |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 501 | ide_acpi_push_timing(hwif); |
Shaohua Li | 5e32132 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 502 | } |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 503 | |
| 504 | ide_acpi_exec_tfs(drive); |
| 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | memset(&rqpm, 0, sizeof(rqpm)); |
| 507 | memset(&args, 0, sizeof(args)); |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 508 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 509 | rq->cmd_type = REQ_TYPE_PM_RESUME; |
| 510 | rq->cmd_flags |= REQ_PREEMPT; |
| 511 | rq->special = &args; |
| 512 | rq->data = &rqpm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | rqpm.pm_step = ide_pm_state_start_resume; |
Pavel Machek | ca078ba | 2005-09-03 15:56:57 -0700 | [diff] [blame] | 514 | rqpm.pm_state = PM_EVENT_ON; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 516 | err = blk_execute_rq(drive->queue, NULL, rq, 1); |
| 517 | blk_put_request(rq); |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 518 | |
Rafael J. Wysocki | ce9b2b0 | 2007-06-16 02:24:43 +0200 | [diff] [blame] | 519 | if (err == 0 && dev->driver) { |
| 520 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 521 | |
| 522 | if (drv->resume) |
| 523 | drv->resume(drive); |
| 524 | } |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 525 | |
| 526 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | } |
| 528 | |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 529 | static int generic_drive_reset(ide_drive_t *drive) |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 530 | { |
| 531 | struct request *rq; |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 532 | int ret = 0; |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 533 | |
| 534 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 535 | rq->cmd_type = REQ_TYPE_SPECIAL; |
| 536 | rq->cmd_len = 1; |
| 537 | rq->cmd[0] = REQ_DRIVE_RESET; |
| 538 | rq->cmd_flags |= REQ_SOFTBARRIER; |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 539 | if (blk_execute_rq(drive->queue, NULL, rq, 1)) |
| 540 | ret = rq->errors; |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 541 | blk_put_request(rq); |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 542 | return ret; |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 543 | } |
| 544 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, |
| 546 | unsigned int cmd, unsigned long arg) |
| 547 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 548 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | ide_driver_t *drv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | void __user *p = (void __user *)arg; |
Linus Torvalds | 1985026 | 2007-07-17 15:57:42 -0700 | [diff] [blame] | 551 | int err = 0, (*setfunc)(ide_drive_t *, int); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 552 | u8 *val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 554 | switch (cmd) { |
| 555 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; |
| 556 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; |
| 557 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; |
| 558 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; |
| 559 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; |
| 560 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; |
| 561 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; |
| 562 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; |
| 563 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | |
| 566 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | case HDIO_OBSOLETE_IDENTITY: |
| 568 | case HDIO_GET_IDENTITY: |
| 569 | if (bdev != bdev->bd_contains) |
| 570 | return -EINVAL; |
| 571 | if (drive->id_read == 0) |
| 572 | return -ENOMSG; |
| 573 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) |
| 574 | return -EFAULT; |
| 575 | return 0; |
| 576 | |
| 577 | case HDIO_GET_NICE: |
| 578 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | |
| 579 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | |
Bartlomiej Zolnierkiewicz | 92b83c8 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 580 | drive->nice1 << IDE_NICE_1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | (long __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | #ifdef CONFIG_IDE_TASK_IOCTL |
| 583 | case HDIO_DRIVE_TASKFILE: |
| 584 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) |
| 585 | return -EACCES; |
| 586 | switch(drive->media) { |
| 587 | case ide_disk: |
| 588 | return ide_taskfile_ioctl(drive, cmd, arg); |
| 589 | default: |
| 590 | return -ENOMSG; |
| 591 | } |
| 592 | #endif /* CONFIG_IDE_TASK_IOCTL */ |
| 593 | |
| 594 | case HDIO_DRIVE_CMD: |
| 595 | if (!capable(CAP_SYS_RAWIO)) |
| 596 | return -EACCES; |
| 597 | return ide_cmd_ioctl(drive, cmd, arg); |
| 598 | |
| 599 | case HDIO_DRIVE_TASK: |
| 600 | if (!capable(CAP_SYS_RAWIO)) |
| 601 | return -EACCES; |
| 602 | return ide_task_ioctl(drive, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | case HDIO_SET_NICE: |
| 604 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; |
| 605 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) |
| 606 | return -EPERM; |
| 607 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; |
| 608 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; |
| 609 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { |
| 610 | drive->dsc_overlap = 0; |
| 611 | return -EPERM; |
| 612 | } |
| 613 | drive->nice1 = (arg >> IDE_NICE_1) & 1; |
| 614 | return 0; |
| 615 | case HDIO_DRIVE_RESET: |
Bartlomiej Zolnierkiewicz | dbecebc | 2008-02-26 21:50:35 +0100 | [diff] [blame] | 616 | if (!capable(CAP_SYS_ADMIN)) |
| 617 | return -EACCES; |
| 618 | |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 619 | return generic_drive_reset(drive); |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 620 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | case HDIO_GET_BUSSTATE: |
| 622 | if (!capable(CAP_SYS_ADMIN)) |
| 623 | return -EACCES; |
| 624 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) |
| 625 | return -EFAULT; |
| 626 | return 0; |
| 627 | |
| 628 | case HDIO_SET_BUSSTATE: |
| 629 | if (!capable(CAP_SYS_ADMIN)) |
| 630 | return -EACCES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | return -EOPNOTSUPP; |
| 632 | default: |
| 633 | return -EINVAL; |
| 634 | } |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 635 | |
| 636 | read_val: |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 637 | mutex_lock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 638 | spin_lock_irqsave(&ide_lock, flags); |
| 639 | err = *val; |
| 640 | spin_unlock_irqrestore(&ide_lock, flags); |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 641 | mutex_unlock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 642 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
| 643 | |
| 644 | set_val: |
| 645 | if (bdev != bdev->bd_contains) |
| 646 | err = -EINVAL; |
| 647 | else { |
| 648 | if (!capable(CAP_SYS_ADMIN)) |
| 649 | err = -EACCES; |
| 650 | else { |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 651 | mutex_lock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 652 | err = setfunc(drive, arg); |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 653 | mutex_unlock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 654 | } |
| 655 | } |
| 656 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | } |
| 658 | |
| 659 | EXPORT_SYMBOL(generic_ide_ioctl); |
| 660 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 661 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
| 662 | { |
| 663 | return 1; |
| 664 | } |
| 665 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 666 | static char *media_string(ide_drive_t *drive) |
| 667 | { |
| 668 | switch (drive->media) { |
| 669 | case ide_disk: |
| 670 | return "disk"; |
| 671 | case ide_cdrom: |
| 672 | return "cdrom"; |
| 673 | case ide_tape: |
| 674 | return "tape"; |
| 675 | case ide_floppy: |
| 676 | return "floppy"; |
Danny Kukawka | a7a832d | 2007-04-10 22:39:14 +0200 | [diff] [blame] | 677 | case ide_optical: |
| 678 | return "optical"; |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 679 | default: |
| 680 | return "UNKNOWN"; |
| 681 | } |
| 682 | } |
| 683 | |
| 684 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 685 | { |
| 686 | ide_drive_t *drive = to_ide_device(dev); |
| 687 | return sprintf(buf, "%s\n", media_string(drive)); |
| 688 | } |
| 689 | |
| 690 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 691 | { |
| 692 | ide_drive_t *drive = to_ide_device(dev); |
| 693 | return sprintf(buf, "%s\n", drive->name); |
| 694 | } |
| 695 | |
| 696 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 697 | { |
| 698 | ide_drive_t *drive = to_ide_device(dev); |
| 699 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); |
| 700 | } |
| 701 | |
Bartlomiej Zolnierkiewicz | e11b903 | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 702 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
| 703 | char *buf) |
| 704 | { |
| 705 | ide_drive_t *drive = to_ide_device(dev); |
| 706 | return sprintf(buf, "%s\n", drive->id->model); |
| 707 | } |
| 708 | |
| 709 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, |
| 710 | char *buf) |
| 711 | { |
| 712 | ide_drive_t *drive = to_ide_device(dev); |
| 713 | return sprintf(buf, "%s\n", drive->id->fw_rev); |
| 714 | } |
| 715 | |
| 716 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, |
| 717 | char *buf) |
| 718 | { |
| 719 | ide_drive_t *drive = to_ide_device(dev); |
| 720 | return sprintf(buf, "%s\n", drive->id->serial_no); |
| 721 | } |
| 722 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 723 | static struct device_attribute ide_dev_attrs[] = { |
| 724 | __ATTR_RO(media), |
| 725 | __ATTR_RO(drivename), |
| 726 | __ATTR_RO(modalias), |
Bartlomiej Zolnierkiewicz | e11b903 | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 727 | __ATTR_RO(model), |
| 728 | __ATTR_RO(firmware), |
| 729 | __ATTR(serial, 0400, serial_show, NULL), |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 730 | __ATTR_NULL |
| 731 | }; |
| 732 | |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 733 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 734 | { |
| 735 | ide_drive_t *drive = to_ide_device(dev); |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 736 | |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 737 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); |
| 738 | add_uevent_var(env, "DRIVENAME=%s", drive->name); |
| 739 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 740 | return 0; |
| 741 | } |
| 742 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 743 | static int generic_ide_probe(struct device *dev) |
| 744 | { |
| 745 | ide_drive_t *drive = to_ide_device(dev); |
| 746 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 747 | |
| 748 | return drv->probe ? drv->probe(drive) : -ENODEV; |
| 749 | } |
| 750 | |
| 751 | static int generic_ide_remove(struct device *dev) |
| 752 | { |
| 753 | ide_drive_t *drive = to_ide_device(dev); |
| 754 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 755 | |
| 756 | if (drv->remove) |
| 757 | drv->remove(drive); |
| 758 | |
| 759 | return 0; |
| 760 | } |
| 761 | |
| 762 | static void generic_ide_shutdown(struct device *dev) |
| 763 | { |
| 764 | ide_drive_t *drive = to_ide_device(dev); |
| 765 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 766 | |
| 767 | if (dev->driver && drv->shutdown) |
| 768 | drv->shutdown(drive); |
| 769 | } |
| 770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | struct bus_type ide_bus_type = { |
| 772 | .name = "ide", |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 773 | .match = ide_bus_match, |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 774 | .uevent = ide_uevent, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 775 | .probe = generic_ide_probe, |
| 776 | .remove = generic_ide_remove, |
| 777 | .shutdown = generic_ide_shutdown, |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 778 | .dev_attrs = ide_dev_attrs, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | .suspend = generic_ide_suspend, |
| 780 | .resume = generic_ide_resume, |
| 781 | }; |
| 782 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 783 | EXPORT_SYMBOL_GPL(ide_bus_type); |
| 784 | |
Bartlomiej Zolnierkiewicz | ebae41a | 2008-04-27 15:38:29 +0200 | [diff] [blame] | 785 | int ide_vlb_clk; |
| 786 | EXPORT_SYMBOL_GPL(ide_vlb_clk); |
| 787 | |
| 788 | module_param_named(vlb_clock, ide_vlb_clk, int, 0); |
| 789 | MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)"); |
| 790 | |
| 791 | int ide_pci_clk; |
| 792 | EXPORT_SYMBOL_GPL(ide_pci_clk); |
| 793 | |
| 794 | module_param_named(pci_clock, ide_pci_clk, int, 0); |
| 795 | MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)"); |
| 796 | |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 797 | static int ide_set_dev_param_mask(const char *s, struct kernel_param *kp) |
| 798 | { |
| 799 | int a, b, i, j = 1; |
| 800 | unsigned int *dev_param_mask = (unsigned int *)kp->arg; |
| 801 | |
| 802 | if (sscanf(s, "%d.%d:%d", &a, &b, &j) != 3 && |
| 803 | sscanf(s, "%d.%d", &a, &b) != 2) |
| 804 | return -EINVAL; |
| 805 | |
| 806 | i = a * MAX_DRIVES + b; |
| 807 | |
| 808 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) |
| 809 | return -EINVAL; |
| 810 | |
| 811 | if (j) |
| 812 | *dev_param_mask |= (1 << i); |
| 813 | else |
| 814 | *dev_param_mask &= (1 << i); |
| 815 | |
| 816 | return 0; |
| 817 | } |
| 818 | |
| 819 | static unsigned int ide_nodma; |
| 820 | |
| 821 | module_param_call(nodma, ide_set_dev_param_mask, NULL, &ide_nodma, 0); |
| 822 | MODULE_PARM_DESC(nodma, "disallow DMA for a device"); |
| 823 | |
| 824 | static unsigned int ide_noflush; |
| 825 | |
| 826 | module_param_call(noflush, ide_set_dev_param_mask, NULL, &ide_noflush, 0); |
| 827 | MODULE_PARM_DESC(noflush, "disable flush requests for a device"); |
| 828 | |
| 829 | static unsigned int ide_noprobe; |
| 830 | |
| 831 | module_param_call(noprobe, ide_set_dev_param_mask, NULL, &ide_noprobe, 0); |
| 832 | MODULE_PARM_DESC(noprobe, "skip probing for a device"); |
| 833 | |
| 834 | static unsigned int ide_nowerr; |
| 835 | |
| 836 | module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0); |
| 837 | MODULE_PARM_DESC(nowerr, "ignore the WRERR_STAT bit for a device"); |
| 838 | |
Bartlomiej Zolnierkiewicz | 4706a7e | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 839 | static unsigned int ide_cdroms; |
| 840 | |
| 841 | module_param_call(cdrom, ide_set_dev_param_mask, NULL, &ide_cdroms, 0); |
| 842 | MODULE_PARM_DESC(cdrom, "force device as a CD-ROM"); |
| 843 | |
| 844 | struct chs_geom { |
| 845 | unsigned int cyl; |
| 846 | u8 head; |
| 847 | u8 sect; |
| 848 | }; |
| 849 | |
| 850 | static unsigned int ide_disks; |
| 851 | static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES]; |
| 852 | |
| 853 | static int ide_set_disk_chs(const char *str, struct kernel_param *kp) |
| 854 | { |
| 855 | int a, b, c = 0, h = 0, s = 0, i, j = 1; |
| 856 | |
| 857 | if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 && |
| 858 | sscanf(str, "%d.%d:%d", &a, &b, &j) != 3) |
| 859 | return -EINVAL; |
| 860 | |
| 861 | i = a * MAX_DRIVES + b; |
| 862 | |
| 863 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) |
| 864 | return -EINVAL; |
| 865 | |
| 866 | if (c > INT_MAX || h > 255 || s > 255) |
| 867 | return -EINVAL; |
| 868 | |
| 869 | if (j) |
| 870 | ide_disks |= (1 << i); |
| 871 | else |
| 872 | ide_disks &= (1 << i); |
| 873 | |
| 874 | ide_disks_chs[i].cyl = c; |
| 875 | ide_disks_chs[i].head = h; |
| 876 | ide_disks_chs[i].sect = s; |
| 877 | |
| 878 | return 0; |
| 879 | } |
| 880 | |
| 881 | module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0); |
| 882 | MODULE_PARM_DESC(chs, "force device as a disk (using CHS)"); |
| 883 | |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 884 | static void ide_dev_apply_params(ide_drive_t *drive) |
| 885 | { |
| 886 | int i = drive->hwif->index * MAX_DRIVES + drive->select.b.unit; |
| 887 | |
| 888 | if (ide_nodma & (1 << i)) { |
| 889 | printk(KERN_INFO "ide: disallowing DMA for %s\n", drive->name); |
| 890 | drive->nodma = 1; |
| 891 | } |
| 892 | if (ide_noflush & (1 << i)) { |
| 893 | printk(KERN_INFO "ide: disabling flush requests for %s\n", |
| 894 | drive->name); |
| 895 | drive->noflush = 1; |
| 896 | } |
| 897 | if (ide_noprobe & (1 << i)) { |
| 898 | printk(KERN_INFO "ide: skipping probe for %s\n", drive->name); |
| 899 | drive->noprobe = 1; |
| 900 | } |
| 901 | if (ide_nowerr & (1 << i)) { |
| 902 | printk(KERN_INFO "ide: ignoring the WRERR_STAT bit for %s\n", |
| 903 | drive->name); |
| 904 | drive->bad_wstat = BAD_R_STAT; |
| 905 | } |
Bartlomiej Zolnierkiewicz | 4706a7e | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 906 | if (ide_cdroms & (1 << i)) { |
| 907 | printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name); |
| 908 | drive->present = 1; |
| 909 | drive->media = ide_cdrom; |
| 910 | /* an ATAPI device ignores DRDY */ |
| 911 | drive->ready_stat = 0; |
| 912 | } |
| 913 | if (ide_disks & (1 << i)) { |
| 914 | drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl; |
| 915 | drive->head = drive->bios_head = ide_disks_chs[i].head; |
| 916 | drive->sect = drive->bios_sect = ide_disks_chs[i].sect; |
| 917 | drive->forced_geom = 1; |
| 918 | printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n", |
| 919 | drive->name, |
| 920 | drive->cyl, drive->head, drive->sect); |
| 921 | drive->present = 1; |
| 922 | drive->media = ide_disk; |
| 923 | drive->ready_stat = READY_STAT; |
| 924 | } |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 925 | } |
| 926 | |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 927 | static unsigned int ide_ignore_cable; |
| 928 | |
| 929 | static int ide_set_ignore_cable(const char *s, struct kernel_param *kp) |
| 930 | { |
| 931 | int i, j = 1; |
| 932 | |
| 933 | if (sscanf(s, "%d:%d", &i, &j) != 2 && sscanf(s, "%d", &i) != 1) |
| 934 | return -EINVAL; |
| 935 | |
| 936 | if (i >= MAX_HWIFS || j < 0 || j > 1) |
| 937 | return -EINVAL; |
| 938 | |
| 939 | if (j) |
| 940 | ide_ignore_cable |= (1 << i); |
| 941 | else |
| 942 | ide_ignore_cable &= (1 << i); |
| 943 | |
| 944 | return 0; |
| 945 | } |
| 946 | |
| 947 | module_param_call(ignore_cable, ide_set_ignore_cable, NULL, NULL, 0); |
| 948 | MODULE_PARM_DESC(ignore_cable, "ignore cable detection"); |
| 949 | |
| 950 | void ide_port_apply_params(ide_hwif_t *hwif) |
| 951 | { |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 952 | int i; |
| 953 | |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 954 | if (ide_ignore_cable & (1 << hwif->index)) { |
| 955 | printk(KERN_INFO "ide: ignoring cable detection for %s\n", |
| 956 | hwif->name); |
| 957 | hwif->cbl = ATA_CBL_PATA40_SHORT; |
| 958 | } |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 959 | |
| 960 | for (i = 0; i < MAX_DRIVES; i++) |
| 961 | ide_dev_apply_params(&hwif->drives[i]); |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 962 | } |
| 963 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | /* |
| 965 | * This is gets invoked once during initialization, to set *everything* up |
| 966 | */ |
| 967 | static int __init ide_init(void) |
| 968 | { |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 969 | int ret; |
| 970 | |
Bartlomiej Zolnierkiewicz | eba8ff9 | 2008-02-11 00:32:13 +0100 | [diff] [blame] | 971 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
Bartlomiej Zolnierkiewicz | 537f06c | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 972 | |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 973 | ret = bus_register(&ide_bus_type); |
| 974 | if (ret < 0) { |
| 975 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); |
| 976 | return ret; |
| 977 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 979 | ide_port_class = class_create(THIS_MODULE, "ide_port"); |
| 980 | if (IS_ERR(ide_port_class)) { |
| 981 | ret = PTR_ERR(ide_port_class); |
| 982 | goto out_port_class; |
| 983 | } |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 984 | |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 985 | proc_ide_create(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | return 0; |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 988 | |
| 989 | out_port_class: |
| 990 | bus_unregister(&ide_bus_type); |
| 991 | |
| 992 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | } |
| 994 | |
Bartlomiej Zolnierkiewicz | 931ee0d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 995 | static void __exit ide_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | proc_ide_destroy(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 999 | class_destroy(ide_port_class); |
| 1000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | bus_unregister(&ide_bus_type); |
| 1002 | } |
| 1003 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | module_init(ide_init); |
Bartlomiej Zolnierkiewicz | 931ee0d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 1005 | module_exit(ide_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | |
Bartlomiej Zolnierkiewicz | 931ee0d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 1007 | MODULE_LICENSE("GPL"); |