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) |
Pavel Machek | fc41069 | 2008-07-23 19:56:02 +0200 | [diff] [blame] | 3 | * Copyright (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 | #include <linux/module.h> |
| 48 | #include <linux/types.h> |
| 49 | #include <linux/string.h> |
| 50 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #include <linux/interrupt.h> |
| 52 | #include <linux/major.h> |
| 53 | #include <linux/errno.h> |
| 54 | #include <linux/genhd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include <linux/slab.h> |
| 56 | #include <linux/init.h> |
| 57 | #include <linux/pci.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #include <linux/ide.h> |
Bartlomiej Zolnierkiewicz | 3ceca72 | 2008-10-10 22:39:27 +0200 | [diff] [blame] | 59 | #include <linux/hdreg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #include <linux/completion.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include <linux/device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | |
| 64 | /* default maximum number of failures */ |
| 65 | #define IDE_DEFAULT_MAX_FAILURES 1 |
| 66 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 67 | struct class *ide_port_class; |
| 68 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, |
| 70 | IDE2_MAJOR, IDE3_MAJOR, |
| 71 | IDE4_MAJOR, IDE5_MAJOR, |
| 72 | IDE6_MAJOR, IDE7_MAJOR, |
| 73 | IDE8_MAJOR, IDE9_MAJOR }; |
| 74 | |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 75 | DEFINE_MUTEX(ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
Bartlomiej Zolnierkiewicz | 931ee0d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 77 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
| 78 | EXPORT_SYMBOL(ide_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 80 | static void ide_port_init_devices_data(ide_hwif_t *); |
| 81 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | /* |
| 83 | * Do not even *think* about calling this! |
| 84 | */ |
Bartlomiej Zolnierkiewicz | cbb010c | 2008-01-26 20:13:06 +0100 | [diff] [blame] | 85 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | /* bulk initialize hwif & drive info with zeros */ |
| 88 | memset(hwif, 0, sizeof(ide_hwif_t)); |
| 89 | |
| 90 | /* fill in any non-zero initial values */ |
| 91 | hwif->index = index; |
| 92 | hwif->major = ide_hwif_to_major[index]; |
| 93 | |
| 94 | hwif->name[0] = 'i'; |
| 95 | hwif->name[1] = 'd'; |
| 96 | hwif->name[2] = 'e'; |
| 97 | hwif->name[3] = '0' + index; |
| 98 | |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 99 | init_completion(&hwif->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 101 | hwif->tp_ops = &default_tp_ops; |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 102 | |
| 103 | ide_port_init_devices_data(hwif); |
| 104 | } |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 105 | |
| 106 | static void ide_port_init_devices_data(ide_hwif_t *hwif) |
| 107 | { |
| 108 | int unit; |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| 111 | ide_drive_t *drive = &hwif->drives[unit]; |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 112 | u8 j = (hwif->index * MAX_DRIVES) + unit; |
| 113 | |
| 114 | memset(drive, 0, sizeof(*drive)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
| 116 | drive->media = ide_disk; |
Bartlomiej Zolnierkiewicz | 7f612f2 | 2008-10-13 21:39:40 +0200 | [diff] [blame^] | 117 | drive->select = (unit << 4) | ATA_DEVICE_OBS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | drive->hwif = hwif; |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 119 | drive->ready_stat = ATA_DRDY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | drive->bad_wstat = BAD_W_STAT; |
| 121 | drive->special.b.recalibrate = 1; |
| 122 | drive->special.b.set_geometry = 1; |
| 123 | drive->name[0] = 'h'; |
| 124 | drive->name[1] = 'd'; |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 125 | drive->name[2] = 'a' + j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | INIT_LIST_HEAD(&drive->list); |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 129 | init_completion(&drive->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | } |
| 131 | } |
Bartlomiej Zolnierkiewicz | 43514ed | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 132 | |
Bartlomiej Zolnierkiewicz | 71bf9f6 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 133 | /* Called with ide_lock held. */ |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 134 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
Bartlomiej Zolnierkiewicz | 71bf9f6 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 135 | { |
| 136 | int i; |
| 137 | |
| 138 | for (i = 0; i < MAX_DRIVES; i++) { |
| 139 | ide_drive_t *drive = &hwif->drives[i]; |
| 140 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 141 | if (drive->dev_flags & IDE_DFLAG_PRESENT) { |
Bartlomiej Zolnierkiewicz | 71bf9f6 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 142 | spin_unlock_irq(&ide_lock); |
| 143 | device_unregister(&drive->gendev); |
| 144 | wait_for_completion(&drive->gendev_rel_comp); |
| 145 | spin_lock_irq(&ide_lock); |
| 146 | } |
| 147 | } |
| 148 | } |
| 149 | |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 150 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
| 151 | { |
| 152 | mutex_lock(&ide_cfg_mtx); |
| 153 | spin_lock_irq(&ide_lock); |
| 154 | __ide_port_unregister_devices(hwif); |
| 155 | hwif->present = 0; |
| 156 | ide_port_init_devices_data(hwif); |
| 157 | spin_unlock_irq(&ide_lock); |
| 158 | mutex_unlock(&ide_cfg_mtx); |
| 159 | } |
| 160 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); |
| 161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | /** |
Sergei Shtylylov | 020e322 | 2006-10-03 01:14:13 -0700 | [diff] [blame] | 163 | * ide_unregister - free an IDE interface |
Bartlomiej Zolnierkiewicz | 387750c | 2008-04-27 15:38:31 +0200 | [diff] [blame] | 164 | * @hwif: IDE interface |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | * |
| 166 | * Perform the final unregister of an IDE interface. At the moment |
| 167 | * we don't refcount interfaces so this will also get split up. |
| 168 | * |
| 169 | * Locking: |
| 170 | * The caller must not hold the IDE locks |
| 171 | * The drive present/vanishing is not yet properly locked |
| 172 | * Take care with the callbacks. These have been split to avoid |
| 173 | * deadlocking the IDE layer. The shutdown callback is called |
| 174 | * before we take the lock and free resources. It is up to the |
| 175 | * 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] | 176 | * the interface will not be reopened (present/vanishing locking |
| 177 | * 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] | 178 | * call the cleanup callback with the ide locks held. |
| 179 | * |
| 180 | * Unregister restores the hwif structures to the default state. |
| 181 | * This is raving bonkers. |
| 182 | */ |
| 183 | |
Bartlomiej Zolnierkiewicz | 387750c | 2008-04-27 15:38:31 +0200 | [diff] [blame] | 184 | void ide_unregister(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | { |
Bartlomiej Zolnierkiewicz | 387750c | 2008-04-27 15:38:31 +0200 | [diff] [blame] | 186 | ide_hwif_t *g; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | ide_hwgroup_t *hwgroup; |
Bartlomiej Zolnierkiewicz | 71bf9f6 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 188 | int irq_count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | BUG_ON(in_interrupt()); |
| 191 | BUG_ON(irqs_disabled()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
Bartlomiej Zolnierkiewicz | bd8a59e | 2008-07-05 20:30:51 +0200 | [diff] [blame] | 193 | mutex_lock(&ide_cfg_mtx); |
| 194 | |
| 195 | spin_lock_irq(&ide_lock); |
| 196 | if (hwif->present) { |
| 197 | __ide_port_unregister_devices(hwif); |
| 198 | hwif->present = 0; |
| 199 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | spin_unlock_irq(&ide_lock); |
| 201 | |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 202 | ide_proc_unregister_port(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
| 204 | hwgroup = hwif->hwgroup; |
| 205 | /* |
| 206 | * free the irq if we were the only hwif using it |
| 207 | */ |
| 208 | g = hwgroup->hwif; |
| 209 | do { |
| 210 | if (g->irq == hwif->irq) |
| 211 | ++irq_count; |
| 212 | g = g->next; |
| 213 | } while (g != hwgroup->hwif); |
| 214 | if (irq_count == 1) |
| 215 | free_irq(hwif->irq, hwgroup); |
| 216 | |
Bartlomiej Zolnierkiewicz | 96e5ad3 | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 217 | ide_remove_port_from_hwgroup(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 219 | device_unregister(hwif->portdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | device_unregister(&hwif->gendev); |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 221 | wait_for_completion(&hwif->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
| 223 | /* |
| 224 | * Remove us from the kernel's knowledge |
| 225 | */ |
| 226 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); |
| 227 | kfree(hwif->sg_table); |
| 228 | unregister_blkdev(hwif->major, hwif->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
Bartlomiej Zolnierkiewicz | 93de00f | 2008-04-18 00:46:24 +0200 | [diff] [blame] | 230 | if (hwif->dma_base) |
Bartlomiej Zolnierkiewicz | 0d1bad2 | 2008-04-26 22:25:19 +0200 | [diff] [blame] | 231 | ide_release_dma_engine(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 233 | mutex_unlock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | } |
| 235 | |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 236 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
| 237 | { |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 238 | memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 239 | hwif->irq = hw->irq; |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 240 | hwif->chipset = hw->chipset; |
Bartlomiej Zolnierkiewicz | c56c564 | 2008-07-16 20:33:40 +0200 | [diff] [blame] | 241 | hwif->dev = hw->dev; |
| 242 | hwif->gendev.parent = hw->parent ? hw->parent : hw->dev; |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 243 | hwif->ack_intr = hw->ack_intr; |
Bartlomiej Zolnierkiewicz | d6276b5 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 244 | hwif->config_data = hw->config; |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 245 | } |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | /* |
| 248 | * Locks for IDE setting functionality |
| 249 | */ |
| 250 | |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 251 | DEFINE_MUTEX(ide_setting_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
Bartlomiej Zolnierkiewicz | 8185d5a | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 253 | ide_devset_get(io_32bit, io_32bit); |
| 254 | |
Elias Oltmanns | 92f1f8f | 2008-10-10 22:39:40 +0200 | [diff] [blame] | 255 | static int set_io_32bit(ide_drive_t *drive, int arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | { |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 257 | if (drive->dev_flags & IDE_DFLAG_NO_IO_32BIT) |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 258 | return -EPERM; |
| 259 | |
| 260 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) |
| 261 | return -EINVAL; |
| 262 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | drive->io_32bit = arg; |
Bartlomiej Zolnierkiewicz | 644a9d7 | 2007-12-12 23:32:00 +0100 | [diff] [blame] | 264 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | return 0; |
| 266 | } |
| 267 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 268 | ide_devset_get_flag(ksettings, IDE_DFLAG_KEEP_SETTINGS); |
Bartlomiej Zolnierkiewicz | 8185d5a | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 269 | |
Elias Oltmanns | 92f1f8f | 2008-10-10 22:39:40 +0200 | [diff] [blame] | 270 | static int set_ksettings(ide_drive_t *drive, int arg) |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 271 | { |
| 272 | if (arg < 0 || arg > 1) |
| 273 | return -EINVAL; |
| 274 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 275 | if (arg) |
| 276 | drive->dev_flags |= IDE_DFLAG_KEEP_SETTINGS; |
| 277 | else |
| 278 | drive->dev_flags &= ~IDE_DFLAG_KEEP_SETTINGS; |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 279 | |
| 280 | return 0; |
| 281 | } |
| 282 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 283 | ide_devset_get_flag(using_dma, IDE_DFLAG_USING_DMA); |
Bartlomiej Zolnierkiewicz | 8185d5a | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 284 | |
Elias Oltmanns | 92f1f8f | 2008-10-10 22:39:40 +0200 | [diff] [blame] | 285 | static int set_using_dma(ide_drive_t *drive, int arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | { |
| 287 | #ifdef CONFIG_BLK_DEV_IDEDMA |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 288 | int err = -EPERM; |
| 289 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 290 | if (arg < 0 || arg > 1) |
| 291 | return -EINVAL; |
| 292 | |
Bartlomiej Zolnierkiewicz | 48fb268 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 293 | if (ata_id_has_dma(drive->id) == 0) |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 294 | goto out; |
| 295 | |
Elias Oltmanns | 92f1f8f | 2008-10-10 22:39:40 +0200 | [diff] [blame] | 296 | if (drive->hwif->dma_ops == NULL) |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 297 | goto out; |
| 298 | |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 299 | err = 0; |
| 300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | if (arg) { |
Bartlomiej Zolnierkiewicz | 23b1bd4 | 2008-01-25 22:17:19 +0100 | [diff] [blame] | 302 | if (ide_set_dma(drive)) |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 303 | err = -EIO; |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 304 | } else |
| 305 | ide_dma_off(drive); |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 306 | |
Bartlomiej Zolnierkiewicz | 8799620 | 2007-03-26 23:03:19 +0200 | [diff] [blame] | 307 | out: |
| 308 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | #else |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 310 | if (arg < 0 || arg > 1) |
| 311 | return -EINVAL; |
| 312 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | return -EPERM; |
| 314 | #endif |
| 315 | } |
| 316 | |
Elias Oltmanns | 92f1f8f | 2008-10-10 22:39:40 +0200 | [diff] [blame] | 317 | static int set_pio_mode(ide_drive_t *drive, int arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | { |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 319 | struct request *rq; |
Bartlomiej Zolnierkiewicz | 784506c | 2008-04-26 17:36:43 +0200 | [diff] [blame] | 320 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 321 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 323 | if (arg < 0 || arg > 255) |
| 324 | return -EINVAL; |
| 325 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 326 | if (port_ops == NULL || port_ops->set_pio_mode == NULL || |
Bartlomiej Zolnierkiewicz | 784506c | 2008-04-26 17:36:43 +0200 | [diff] [blame] | 327 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | return -ENOSYS; |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 329 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | if (drive->special.b.set_tune) |
| 331 | return -EBUSY; |
Bartlomiej Zolnierkiewicz | 145b75e | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 332 | |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 333 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 334 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
Bartlomiej Zolnierkiewicz | 145b75e | 2008-01-26 20:13:11 +0100 | [diff] [blame] | 335 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | drive->tune_req = (u8) arg; |
| 337 | drive->special.b.set_tune = 1; |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 338 | |
| 339 | blk_execute_rq(drive->queue, NULL, rq, 0); |
| 340 | blk_put_request(rq); |
| 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | return 0; |
| 343 | } |
| 344 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 345 | ide_devset_get_flag(unmaskirq, IDE_DFLAG_UNMASK); |
Bartlomiej Zolnierkiewicz | 8185d5a | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 346 | |
Elias Oltmanns | 92f1f8f | 2008-10-10 22:39:40 +0200 | [diff] [blame] | 347 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 348 | { |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 349 | if (drive->dev_flags & IDE_DFLAG_NO_UNMASK) |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 350 | return -EPERM; |
| 351 | |
| 352 | if (arg < 0 || arg > 1) |
| 353 | return -EINVAL; |
| 354 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 355 | if (arg) |
| 356 | drive->dev_flags |= IDE_DFLAG_UNMASK; |
| 357 | else |
| 358 | drive->dev_flags &= ~IDE_DFLAG_UNMASK; |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 359 | |
| 360 | return 0; |
| 361 | } |
| 362 | |
Elias Oltmanns | 92f1f8f | 2008-10-10 22:39:40 +0200 | [diff] [blame] | 363 | #define ide_gen_devset_rw(_name, _func) \ |
| 364 | __IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func) |
| 365 | |
| 366 | ide_gen_devset_rw(io_32bit, io_32bit); |
| 367 | ide_gen_devset_rw(keepsettings, ksettings); |
| 368 | ide_gen_devset_rw(unmaskirq, unmaskirq); |
| 369 | ide_gen_devset_rw(using_dma, using_dma); |
| 370 | __IDE_DEVSET(pio_mode, 0, NULL, set_pio_mode); |
| 371 | |
David Brownell | b887d2e | 2006-08-14 23:11:05 -0700 | [diff] [blame] | 372 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | { |
Bartlomiej Zolnierkiewicz | 1ea1031 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 374 | ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive); |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 375 | ide_hwif_t *hwif = HWIF(drive); |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 376 | struct request *rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | struct request_pm_state rqpm; |
| 378 | ide_task_t args; |
Shaohua Li | 5e32132 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 379 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
Bartlomiej Zolnierkiewicz | 1ea1031 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 381 | /* call ACPI _GTM only once */ |
| 382 | if ((drive->dn & 1) == 0 || pair == NULL) |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 383 | ide_acpi_get_timing(hwif); |
| 384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | memset(&rqpm, 0, sizeof(rqpm)); |
| 386 | memset(&args, 0, sizeof(args)); |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 387 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 388 | rq->cmd_type = REQ_TYPE_PM_SUSPEND; |
| 389 | rq->special = &args; |
| 390 | rq->data = &rqpm; |
Bartlomiej Zolnierkiewicz | 0d346ba | 2008-10-13 21:39:38 +0200 | [diff] [blame] | 391 | rqpm.pm_step = IDE_PM_START_SUSPEND; |
David Brownell | b887d2e | 2006-08-14 23:11:05 -0700 | [diff] [blame] | 392 | if (mesg.event == PM_EVENT_PRETHAW) |
| 393 | mesg.event = PM_EVENT_FREEZE; |
| 394 | rqpm.pm_state = mesg.event; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 396 | ret = blk_execute_rq(drive->queue, NULL, rq, 0); |
| 397 | blk_put_request(rq); |
Bartlomiej Zolnierkiewicz | 1ea1031 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 398 | |
| 399 | /* call ACPI _PS3 only after both devices are suspended */ |
| 400 | if (ret == 0 && ((drive->dn & 1) || pair == NULL)) |
Shaohua Li | 5e32132 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 401 | ide_acpi_set_state(hwif, 0); |
Bartlomiej Zolnierkiewicz | 1ea1031 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 402 | |
Shaohua Li | 5e32132 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 403 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | static int generic_ide_resume(struct device *dev) |
| 407 | { |
Bartlomiej Zolnierkiewicz | 1ea1031 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 408 | ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive); |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 409 | ide_hwif_t *hwif = HWIF(drive); |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 410 | struct request *rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | struct request_pm_state rqpm; |
| 412 | ide_task_t args; |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 413 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
Bartlomiej Zolnierkiewicz | 1ea1031 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 415 | /* call ACPI _PS0 / _STM only once */ |
| 416 | if ((drive->dn & 1) == 0 || pair == NULL) { |
Shaohua Li | 5e32132 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 417 | ide_acpi_set_state(hwif, 1); |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 418 | ide_acpi_push_timing(hwif); |
Shaohua Li | 5e32132 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 419 | } |
Hannes Reinecke | e3a59b4 | 2007-02-07 18:19:37 +0100 | [diff] [blame] | 420 | |
| 421 | ide_acpi_exec_tfs(drive); |
| 422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | memset(&rqpm, 0, sizeof(rqpm)); |
| 424 | memset(&args, 0, sizeof(args)); |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 425 | rq = blk_get_request(drive->queue, READ, __GFP_WAIT); |
| 426 | rq->cmd_type = REQ_TYPE_PM_RESUME; |
| 427 | rq->cmd_flags |= REQ_PREEMPT; |
| 428 | rq->special = &args; |
| 429 | rq->data = &rqpm; |
Bartlomiej Zolnierkiewicz | 0d346ba | 2008-10-13 21:39:38 +0200 | [diff] [blame] | 430 | rqpm.pm_step = IDE_PM_START_RESUME; |
Pavel Machek | ca078ba | 2005-09-03 15:56:57 -0700 | [diff] [blame] | 431 | rqpm.pm_state = PM_EVENT_ON; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
FUJITA Tomonori | 5b11471 | 2008-07-15 21:21:44 +0200 | [diff] [blame] | 433 | err = blk_execute_rq(drive->queue, NULL, rq, 1); |
| 434 | blk_put_request(rq); |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 435 | |
Rafael J. Wysocki | ce9b2b0 | 2007-06-16 02:24:43 +0200 | [diff] [blame] | 436 | if (err == 0 && dev->driver) { |
| 437 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 438 | |
| 439 | if (drv->resume) |
| 440 | drv->resume(drive); |
| 441 | } |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 442 | |
| 443 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | } |
| 445 | |
Bartlomiej Zolnierkiewicz | 08da591 | 2008-07-24 22:53:15 +0200 | [diff] [blame] | 446 | /** |
| 447 | * ide_device_get - get an additional reference to a ide_drive_t |
| 448 | * @drive: device to get a reference to |
| 449 | * |
| 450 | * Gets a reference to the ide_drive_t and increments the use count of the |
| 451 | * underlying LLDD module. |
| 452 | */ |
| 453 | int ide_device_get(ide_drive_t *drive) |
| 454 | { |
| 455 | struct device *host_dev; |
| 456 | struct module *module; |
| 457 | |
| 458 | if (!get_device(&drive->gendev)) |
| 459 | return -ENXIO; |
| 460 | |
| 461 | host_dev = drive->hwif->host->dev[0]; |
| 462 | module = host_dev ? host_dev->driver->owner : NULL; |
| 463 | |
| 464 | if (module && !try_module_get(module)) { |
| 465 | put_device(&drive->gendev); |
| 466 | return -ENXIO; |
| 467 | } |
| 468 | |
| 469 | return 0; |
| 470 | } |
| 471 | EXPORT_SYMBOL_GPL(ide_device_get); |
| 472 | |
| 473 | /** |
| 474 | * ide_device_put - release a reference to a ide_drive_t |
| 475 | * @drive: device to release a reference on |
| 476 | * |
| 477 | * Release a reference to the ide_drive_t and decrements the use count of |
| 478 | * the underlying LLDD module. |
| 479 | */ |
| 480 | void ide_device_put(ide_drive_t *drive) |
| 481 | { |
| 482 | #ifdef CONFIG_MODULE_UNLOAD |
| 483 | struct device *host_dev = drive->hwif->host->dev[0]; |
| 484 | struct module *module = host_dev ? host_dev->driver->owner : NULL; |
| 485 | |
| 486 | if (module) |
| 487 | module_put(module); |
| 488 | #endif |
| 489 | put_device(&drive->gendev); |
| 490 | } |
| 491 | EXPORT_SYMBOL_GPL(ide_device_put); |
| 492 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 493 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
| 494 | { |
| 495 | return 1; |
| 496 | } |
| 497 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 498 | static char *media_string(ide_drive_t *drive) |
| 499 | { |
| 500 | switch (drive->media) { |
| 501 | case ide_disk: |
| 502 | return "disk"; |
| 503 | case ide_cdrom: |
| 504 | return "cdrom"; |
| 505 | case ide_tape: |
| 506 | return "tape"; |
| 507 | case ide_floppy: |
| 508 | return "floppy"; |
Danny Kukawka | a7a832d | 2007-04-10 22:39:14 +0200 | [diff] [blame] | 509 | case ide_optical: |
| 510 | return "optical"; |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 511 | default: |
| 512 | return "UNKNOWN"; |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 517 | { |
| 518 | ide_drive_t *drive = to_ide_device(dev); |
| 519 | return sprintf(buf, "%s\n", media_string(drive)); |
| 520 | } |
| 521 | |
| 522 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 523 | { |
| 524 | ide_drive_t *drive = to_ide_device(dev); |
| 525 | return sprintf(buf, "%s\n", drive->name); |
| 526 | } |
| 527 | |
| 528 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) |
| 529 | { |
| 530 | ide_drive_t *drive = to_ide_device(dev); |
| 531 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); |
| 532 | } |
| 533 | |
Bartlomiej Zolnierkiewicz | e11b903 | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 534 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
| 535 | char *buf) |
| 536 | { |
| 537 | ide_drive_t *drive = to_ide_device(dev); |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 538 | return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_PROD]); |
Bartlomiej Zolnierkiewicz | e11b903 | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 539 | } |
| 540 | |
| 541 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, |
| 542 | char *buf) |
| 543 | { |
| 544 | ide_drive_t *drive = to_ide_device(dev); |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 545 | return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_FW_REV]); |
Bartlomiej Zolnierkiewicz | e11b903 | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, |
| 549 | char *buf) |
| 550 | { |
| 551 | ide_drive_t *drive = to_ide_device(dev); |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 552 | return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_SERNO]); |
Bartlomiej Zolnierkiewicz | e11b903 | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 553 | } |
| 554 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 555 | static struct device_attribute ide_dev_attrs[] = { |
| 556 | __ATTR_RO(media), |
| 557 | __ATTR_RO(drivename), |
| 558 | __ATTR_RO(modalias), |
Bartlomiej Zolnierkiewicz | e11b903 | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 559 | __ATTR_RO(model), |
| 560 | __ATTR_RO(firmware), |
| 561 | __ATTR(serial, 0400, serial_show, NULL), |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 562 | __ATTR_NULL |
| 563 | }; |
| 564 | |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 565 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 566 | { |
| 567 | ide_drive_t *drive = to_ide_device(dev); |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 568 | |
Kay Sievers | 7eff2e7 | 2007-08-14 15:15:12 +0200 | [diff] [blame] | 569 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); |
| 570 | add_uevent_var(env, "DRIVENAME=%s", drive->name); |
| 571 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 572 | return 0; |
| 573 | } |
| 574 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 575 | static int generic_ide_probe(struct device *dev) |
| 576 | { |
| 577 | ide_drive_t *drive = to_ide_device(dev); |
| 578 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 579 | |
| 580 | return drv->probe ? drv->probe(drive) : -ENODEV; |
| 581 | } |
| 582 | |
| 583 | static int generic_ide_remove(struct device *dev) |
| 584 | { |
| 585 | ide_drive_t *drive = to_ide_device(dev); |
| 586 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 587 | |
| 588 | if (drv->remove) |
| 589 | drv->remove(drive); |
| 590 | |
| 591 | return 0; |
| 592 | } |
| 593 | |
| 594 | static void generic_ide_shutdown(struct device *dev) |
| 595 | { |
| 596 | ide_drive_t *drive = to_ide_device(dev); |
| 597 | ide_driver_t *drv = to_ide_driver(dev->driver); |
| 598 | |
| 599 | if (dev->driver && drv->shutdown) |
| 600 | drv->shutdown(drive); |
| 601 | } |
| 602 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | struct bus_type ide_bus_type = { |
| 604 | .name = "ide", |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 605 | .match = ide_bus_match, |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 606 | .uevent = ide_uevent, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 607 | .probe = generic_ide_probe, |
| 608 | .remove = generic_ide_remove, |
| 609 | .shutdown = generic_ide_shutdown, |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 610 | .dev_attrs = ide_dev_attrs, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | .suspend = generic_ide_suspend, |
| 612 | .resume = generic_ide_resume, |
| 613 | }; |
| 614 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 615 | EXPORT_SYMBOL_GPL(ide_bus_type); |
| 616 | |
Bartlomiej Zolnierkiewicz | ebae41a | 2008-04-27 15:38:29 +0200 | [diff] [blame] | 617 | int ide_vlb_clk; |
| 618 | EXPORT_SYMBOL_GPL(ide_vlb_clk); |
| 619 | |
| 620 | module_param_named(vlb_clock, ide_vlb_clk, int, 0); |
| 621 | MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)"); |
| 622 | |
| 623 | int ide_pci_clk; |
| 624 | EXPORT_SYMBOL_GPL(ide_pci_clk); |
| 625 | |
| 626 | module_param_named(pci_clock, ide_pci_clk, int, 0); |
| 627 | MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)"); |
| 628 | |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 629 | static int ide_set_dev_param_mask(const char *s, struct kernel_param *kp) |
| 630 | { |
| 631 | int a, b, i, j = 1; |
| 632 | unsigned int *dev_param_mask = (unsigned int *)kp->arg; |
| 633 | |
| 634 | if (sscanf(s, "%d.%d:%d", &a, &b, &j) != 3 && |
| 635 | sscanf(s, "%d.%d", &a, &b) != 2) |
| 636 | return -EINVAL; |
| 637 | |
| 638 | i = a * MAX_DRIVES + b; |
| 639 | |
| 640 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) |
| 641 | return -EINVAL; |
| 642 | |
| 643 | if (j) |
| 644 | *dev_param_mask |= (1 << i); |
| 645 | else |
| 646 | *dev_param_mask &= (1 << i); |
| 647 | |
| 648 | return 0; |
| 649 | } |
| 650 | |
| 651 | static unsigned int ide_nodma; |
| 652 | |
| 653 | module_param_call(nodma, ide_set_dev_param_mask, NULL, &ide_nodma, 0); |
| 654 | MODULE_PARM_DESC(nodma, "disallow DMA for a device"); |
| 655 | |
| 656 | static unsigned int ide_noflush; |
| 657 | |
| 658 | module_param_call(noflush, ide_set_dev_param_mask, NULL, &ide_noflush, 0); |
| 659 | MODULE_PARM_DESC(noflush, "disable flush requests for a device"); |
| 660 | |
| 661 | static unsigned int ide_noprobe; |
| 662 | |
| 663 | module_param_call(noprobe, ide_set_dev_param_mask, NULL, &ide_noprobe, 0); |
| 664 | MODULE_PARM_DESC(noprobe, "skip probing for a device"); |
| 665 | |
| 666 | static unsigned int ide_nowerr; |
| 667 | |
| 668 | module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 669 | MODULE_PARM_DESC(nowerr, "ignore the ATA_DF bit for a device"); |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 670 | |
Bartlomiej Zolnierkiewicz | 4706a7e | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 671 | static unsigned int ide_cdroms; |
| 672 | |
| 673 | module_param_call(cdrom, ide_set_dev_param_mask, NULL, &ide_cdroms, 0); |
| 674 | MODULE_PARM_DESC(cdrom, "force device as a CD-ROM"); |
| 675 | |
| 676 | struct chs_geom { |
| 677 | unsigned int cyl; |
| 678 | u8 head; |
| 679 | u8 sect; |
| 680 | }; |
| 681 | |
| 682 | static unsigned int ide_disks; |
| 683 | static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES]; |
| 684 | |
| 685 | static int ide_set_disk_chs(const char *str, struct kernel_param *kp) |
| 686 | { |
| 687 | int a, b, c = 0, h = 0, s = 0, i, j = 1; |
| 688 | |
| 689 | if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 && |
| 690 | sscanf(str, "%d.%d:%d", &a, &b, &j) != 3) |
| 691 | return -EINVAL; |
| 692 | |
| 693 | i = a * MAX_DRIVES + b; |
| 694 | |
| 695 | if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) |
| 696 | return -EINVAL; |
| 697 | |
| 698 | if (c > INT_MAX || h > 255 || s > 255) |
| 699 | return -EINVAL; |
| 700 | |
| 701 | if (j) |
| 702 | ide_disks |= (1 << i); |
| 703 | else |
| 704 | ide_disks &= (1 << i); |
| 705 | |
| 706 | ide_disks_chs[i].cyl = c; |
| 707 | ide_disks_chs[i].head = h; |
| 708 | ide_disks_chs[i].sect = s; |
| 709 | |
| 710 | return 0; |
| 711 | } |
| 712 | |
| 713 | module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0); |
| 714 | MODULE_PARM_DESC(chs, "force device as a disk (using CHS)"); |
| 715 | |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 716 | static void ide_dev_apply_params(ide_drive_t *drive, u8 unit) |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 717 | { |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 718 | int i = drive->hwif->index * MAX_DRIVES + unit; |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 719 | |
| 720 | if (ide_nodma & (1 << i)) { |
| 721 | printk(KERN_INFO "ide: disallowing DMA for %s\n", drive->name); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 722 | drive->dev_flags |= IDE_DFLAG_NODMA; |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 723 | } |
| 724 | if (ide_noflush & (1 << i)) { |
| 725 | printk(KERN_INFO "ide: disabling flush requests for %s\n", |
| 726 | drive->name); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 727 | drive->dev_flags |= IDE_DFLAG_NOFLUSH; |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 728 | } |
| 729 | if (ide_noprobe & (1 << i)) { |
| 730 | printk(KERN_INFO "ide: skipping probe for %s\n", drive->name); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 731 | drive->dev_flags |= IDE_DFLAG_NOPROBE; |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 732 | } |
| 733 | if (ide_nowerr & (1 << i)) { |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 734 | printk(KERN_INFO "ide: ignoring the ATA_DF bit for %s\n", |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 735 | drive->name); |
| 736 | drive->bad_wstat = BAD_R_STAT; |
| 737 | } |
Bartlomiej Zolnierkiewicz | 4706a7e | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 738 | if (ide_cdroms & (1 << i)) { |
| 739 | printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 740 | drive->dev_flags |= IDE_DFLAG_PRESENT; |
Bartlomiej Zolnierkiewicz | 4706a7e | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 741 | drive->media = ide_cdrom; |
| 742 | /* an ATAPI device ignores DRDY */ |
| 743 | drive->ready_stat = 0; |
| 744 | } |
| 745 | if (ide_disks & (1 << i)) { |
| 746 | drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl; |
| 747 | drive->head = drive->bios_head = ide_disks_chs[i].head; |
| 748 | drive->sect = drive->bios_sect = ide_disks_chs[i].sect; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 749 | |
Bartlomiej Zolnierkiewicz | 4706a7e | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 750 | printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n", |
| 751 | drive->name, |
| 752 | drive->cyl, drive->head, drive->sect); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 753 | |
| 754 | drive->dev_flags |= IDE_DFLAG_FORCED_GEOM | IDE_DFLAG_PRESENT; |
Bartlomiej Zolnierkiewicz | 4706a7e | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 755 | drive->media = ide_disk; |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 756 | drive->ready_stat = ATA_DRDY; |
Bartlomiej Zolnierkiewicz | 4706a7e | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 757 | } |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 758 | } |
| 759 | |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 760 | static unsigned int ide_ignore_cable; |
| 761 | |
| 762 | static int ide_set_ignore_cable(const char *s, struct kernel_param *kp) |
| 763 | { |
| 764 | int i, j = 1; |
| 765 | |
| 766 | if (sscanf(s, "%d:%d", &i, &j) != 2 && sscanf(s, "%d", &i) != 1) |
| 767 | return -EINVAL; |
| 768 | |
| 769 | if (i >= MAX_HWIFS || j < 0 || j > 1) |
| 770 | return -EINVAL; |
| 771 | |
| 772 | if (j) |
| 773 | ide_ignore_cable |= (1 << i); |
| 774 | else |
| 775 | ide_ignore_cable &= (1 << i); |
| 776 | |
| 777 | return 0; |
| 778 | } |
| 779 | |
| 780 | module_param_call(ignore_cable, ide_set_ignore_cable, NULL, NULL, 0); |
| 781 | MODULE_PARM_DESC(ignore_cable, "ignore cable detection"); |
| 782 | |
| 783 | void ide_port_apply_params(ide_hwif_t *hwif) |
| 784 | { |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 785 | int i; |
| 786 | |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 787 | if (ide_ignore_cable & (1 << hwif->index)) { |
| 788 | printk(KERN_INFO "ide: ignoring cable detection for %s\n", |
| 789 | hwif->name); |
| 790 | hwif->cbl = ATA_CBL_PATA40_SHORT; |
| 791 | } |
Bartlomiej Zolnierkiewicz | 6e87543 | 2008-04-27 15:38:30 +0200 | [diff] [blame] | 792 | |
| 793 | for (i = 0; i < MAX_DRIVES; i++) |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 794 | ide_dev_apply_params(&hwif->drives[i], i); |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 795 | } |
| 796 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | /* |
| 798 | * This is gets invoked once during initialization, to set *everything* up |
| 799 | */ |
| 800 | static int __init ide_init(void) |
| 801 | { |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 802 | int ret; |
| 803 | |
Bartlomiej Zolnierkiewicz | eba8ff9 | 2008-02-11 00:32:13 +0100 | [diff] [blame] | 804 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
Bartlomiej Zolnierkiewicz | 537f06c | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 805 | |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 806 | ret = bus_register(&ide_bus_type); |
| 807 | if (ret < 0) { |
| 808 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); |
| 809 | return ret; |
| 810 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 812 | ide_port_class = class_create(THIS_MODULE, "ide_port"); |
| 813 | if (IS_ERR(ide_port_class)) { |
| 814 | ret = PTR_ERR(ide_port_class); |
| 815 | goto out_port_class; |
| 816 | } |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 817 | |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 818 | proc_ide_create(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | return 0; |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 821 | |
| 822 | out_port_class: |
| 823 | bus_unregister(&ide_bus_type); |
| 824 | |
| 825 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | } |
| 827 | |
Bartlomiej Zolnierkiewicz | 931ee0d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 828 | static void __exit ide_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | proc_ide_destroy(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 832 | class_destroy(ide_port_class); |
| 833 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | bus_unregister(&ide_bus_type); |
| 835 | } |
| 836 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | module_init(ide_init); |
Bartlomiej Zolnierkiewicz | 931ee0d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 838 | module_exit(ide_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | |
Bartlomiej Zolnierkiewicz | 931ee0d | 2008-07-15 21:21:47 +0200 | [diff] [blame] | 840 | MODULE_LICENSE("GPL"); |