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 | * Copyright (C) 1998-2002 Linux ATA Development |
| 4 | * Andre Hedrick <andre@linux-ide.org> |
| 5 | * Copyright (C) 2003 Red Hat <alan@redhat.com> |
| 6 | * Copyright (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | /* |
| 10 | * Mostly written by Mark Lord <mlord@pobox.com> |
| 11 | * and Gadi Oxman <gadio@netvision.net.il> |
| 12 | * and Andre Hedrick <andre@linux-ide.org> |
| 13 | * |
| 14 | * This is the IDE/ATA disk driver, as evolved from hd.c and ide.c. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | */ |
| 16 | |
| 17 | #define IDEDISK_VERSION "1.18" |
| 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | //#define DEBUG |
| 20 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/module.h> |
| 22 | #include <linux/types.h> |
| 23 | #include <linux/string.h> |
| 24 | #include <linux/kernel.h> |
| 25 | #include <linux/timer.h> |
| 26 | #include <linux/mm.h> |
| 27 | #include <linux/interrupt.h> |
| 28 | #include <linux/major.h> |
| 29 | #include <linux/errno.h> |
| 30 | #include <linux/genhd.h> |
| 31 | #include <linux/slab.h> |
| 32 | #include <linux/delay.h> |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 33 | #include <linux/mutex.h> |
Richard Purdie | 2bfb646 | 2006-03-31 02:31:16 -0800 | [diff] [blame] | 34 | #include <linux/leds.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | #define _IDE_DISK |
| 37 | |
| 38 | #include <linux/ide.h> |
| 39 | |
| 40 | #include <asm/byteorder.h> |
| 41 | #include <asm/irq.h> |
| 42 | #include <asm/uaccess.h> |
| 43 | #include <asm/io.h> |
| 44 | #include <asm/div64.h> |
| 45 | |
| 46 | struct ide_disk_obj { |
| 47 | ide_drive_t *drive; |
| 48 | ide_driver_t *driver; |
| 49 | struct gendisk *disk; |
| 50 | struct kref kref; |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 51 | unsigned int openers; /* protected by BKL for now */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | }; |
| 53 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 54 | static DEFINE_MUTEX(idedisk_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | #define to_ide_disk(obj) container_of(obj, struct ide_disk_obj, kref) |
| 57 | |
| 58 | #define ide_disk_g(disk) \ |
| 59 | container_of((disk)->private_data, struct ide_disk_obj, driver) |
| 60 | |
| 61 | static struct ide_disk_obj *ide_disk_get(struct gendisk *disk) |
| 62 | { |
| 63 | struct ide_disk_obj *idkp = NULL; |
| 64 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 65 | mutex_lock(&idedisk_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | idkp = ide_disk_g(disk); |
| 67 | if (idkp) |
| 68 | kref_get(&idkp->kref); |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 69 | mutex_unlock(&idedisk_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | return idkp; |
| 71 | } |
| 72 | |
| 73 | static void ide_disk_release(struct kref *); |
| 74 | |
| 75 | static void ide_disk_put(struct ide_disk_obj *idkp) |
| 76 | { |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 77 | mutex_lock(&idedisk_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | kref_put(&idkp->kref, ide_disk_release); |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 79 | mutex_unlock(&idedisk_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | /* |
| 83 | * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity" |
| 84 | * value for this drive (from its reported identification information). |
| 85 | * |
| 86 | * Returns: 1 if lba_capacity looks sensible |
| 87 | * 0 otherwise |
| 88 | * |
| 89 | * It is called only once for each drive. |
| 90 | */ |
| 91 | static int lba_capacity_is_ok (struct hd_driveid *id) |
| 92 | { |
| 93 | unsigned long lba_sects, chs_sects, head, tail; |
| 94 | |
Alan Cox | 6efd936 | 2005-06-27 15:24:22 -0700 | [diff] [blame] | 95 | /* No non-LBA info .. so valid! */ |
| 96 | if (id->cyls == 0) |
| 97 | return 1; |
| 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | /* |
| 100 | * The ATA spec tells large drives to return |
| 101 | * C/H/S = 16383/16/63 independent of their size. |
| 102 | * Some drives can be jumpered to use 15 heads instead of 16. |
| 103 | * Some drives can be jumpered to use 4092 cyls instead of 16383. |
| 104 | */ |
| 105 | if ((id->cyls == 16383 |
| 106 | || (id->cyls == 4092 && id->cur_cyls == 16383)) && |
| 107 | id->sectors == 63 && |
| 108 | (id->heads == 15 || id->heads == 16) && |
| 109 | (id->lba_capacity >= 16383*63*id->heads)) |
| 110 | return 1; |
| 111 | |
| 112 | lba_sects = id->lba_capacity; |
| 113 | chs_sects = id->cyls * id->heads * id->sectors; |
| 114 | |
| 115 | /* perform a rough sanity check on lba_sects: within 10% is OK */ |
| 116 | if ((lba_sects - chs_sects) < chs_sects/10) |
| 117 | return 1; |
| 118 | |
| 119 | /* some drives have the word order reversed */ |
| 120 | head = ((lba_sects >> 16) & 0xffff); |
| 121 | tail = (lba_sects & 0xffff); |
| 122 | lba_sects = (head | (tail << 16)); |
| 123 | if ((lba_sects - chs_sects) < chs_sects/10) { |
| 124 | id->lba_capacity = lba_sects; |
| 125 | return 1; /* lba_capacity is (now) good */ |
| 126 | } |
| 127 | |
| 128 | return 0; /* lba_capacity value may be bad */ |
| 129 | } |
| 130 | |
Bartlomiej Zolnierkiewicz | ba76ae3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 131 | static const u8 ide_rw_cmds[] = { |
| 132 | WIN_MULTREAD, |
| 133 | WIN_MULTWRITE, |
| 134 | WIN_MULTREAD_EXT, |
| 135 | WIN_MULTWRITE_EXT, |
| 136 | WIN_READ, |
| 137 | WIN_WRITE, |
| 138 | WIN_READ_EXT, |
| 139 | WIN_WRITE_EXT, |
| 140 | WIN_READDMA, |
| 141 | WIN_WRITEDMA, |
| 142 | WIN_READDMA_EXT, |
| 143 | WIN_WRITEDMA_EXT, |
| 144 | }; |
| 145 | |
| 146 | static const u8 ide_data_phases[] = { |
| 147 | TASKFILE_MULTI_IN, |
| 148 | TASKFILE_MULTI_OUT, |
| 149 | TASKFILE_IN, |
| 150 | TASKFILE_OUT, |
| 151 | TASKFILE_IN_DMA, |
| 152 | TASKFILE_OUT_DMA, |
| 153 | }; |
| 154 | |
| 155 | static void ide_tf_set_cmd(ide_drive_t *drive, ide_task_t *task, u8 dma) |
| 156 | { |
| 157 | u8 index, lba48, write; |
| 158 | |
| 159 | lba48 = (task->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0; |
| 160 | write = (task->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0; |
| 161 | |
| 162 | if (dma) |
| 163 | index = drive->vdma ? 4 : 8; |
| 164 | else |
| 165 | index = drive->mult_count ? 0 : 4; |
| 166 | |
| 167 | task->tf.command = ide_rw_cmds[index + lba48 + write]; |
| 168 | |
| 169 | if (dma) |
| 170 | index = 8; /* fixup index */ |
| 171 | |
| 172 | task->data_phase = ide_data_phases[index / 2 + write]; |
| 173 | } |
| 174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | /* |
| 176 | * __ide_do_rw_disk() issues READ and WRITE commands to a disk, |
| 177 | * using LBA if supported, or CHS otherwise, to address sectors. |
| 178 | */ |
| 179 | static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq, sector_t block) |
| 180 | { |
| 181 | ide_hwif_t *hwif = HWIF(drive); |
| 182 | unsigned int dma = drive->using_dma; |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 183 | u16 nsectors = (u16)rq->nr_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | u8 lba48 = (drive->addressing == 1) ? 1 : 0; |
Bartlomiej Zolnierkiewicz | 9e42237 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 185 | ide_task_t task; |
| 186 | struct ide_taskfile *tf = &task.tf; |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 187 | ide_startstop_t rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | |
Bartlomiej Zolnierkiewicz | 238e4f1 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 189 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | if (block + rq->nr_sectors > 1ULL << 28) |
| 191 | dma = 0; |
| 192 | else |
| 193 | lba48 = 0; |
| 194 | } |
| 195 | |
| 196 | if (!dma) { |
| 197 | ide_init_sg_cmd(drive, rq); |
| 198 | ide_map_sg(drive, rq); |
| 199 | } |
| 200 | |
Bartlomiej Zolnierkiewicz | 9e42237 | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 201 | memset(&task, 0, sizeof(task)); |
| 202 | task.tf_flags = IDE_TFLAG_NO_SELECT_MASK; /* FIXME? */ |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 203 | task.tf_flags |= (IDE_TFLAG_TF | IDE_TFLAG_DEVICE); |
Bartlomiej Zolnierkiewicz | 2bd06b2 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | if (drive->select.b.lba) { |
| 206 | if (lba48) { |
Michael Richardson | c2f8311 | 2006-02-07 12:58:33 -0800 | [diff] [blame] | 207 | pr_debug("%s: LBA=0x%012llx\n", drive->name, |
| 208 | (unsigned long long)block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 210 | tf->hob_nsect = (nsectors >> 8) & 0xff; |
Bartlomiej Zolnierkiewicz | 2bd06b2 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 211 | tf->hob_lbal = (u8)(block >> 24); |
| 212 | if (sizeof(block) != 4) { |
| 213 | tf->hob_lbam = (u8)((u64)block >> 32); |
| 214 | tf->hob_lbah = (u8)((u64)block >> 40); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | } |
Bartlomiej Zolnierkiewicz | 2bd06b2 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 216 | |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 217 | tf->nsect = nsectors & 0xff; |
Bartlomiej Zolnierkiewicz | 2bd06b2 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 218 | tf->lbal = (u8) block; |
| 219 | tf->lbam = (u8)(block >> 8); |
| 220 | tf->lbah = (u8)(block >> 16); |
Bartlomiej Zolnierkiewicz | 6dd9b83 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 221 | |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 222 | task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | } else { |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 224 | tf->nsect = nsectors & 0xff; |
Bartlomiej Zolnierkiewicz | 2bd06b2 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 225 | tf->lbal = block; |
| 226 | tf->lbam = block >>= 8; |
| 227 | tf->lbah = block >>= 8; |
| 228 | tf->device = (block >> 8) & 0xf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | } |
| 230 | } else { |
| 231 | unsigned int sect,head,cyl,track; |
| 232 | track = (int)block / drive->sect; |
| 233 | sect = (int)block % drive->sect + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | head = track % drive->head; |
| 235 | cyl = track / drive->head; |
| 236 | |
| 237 | pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect); |
| 238 | |
Bartlomiej Zolnierkiewicz | 790d123 | 2008-01-25 22:17:12 +0100 | [diff] [blame] | 239 | tf->nsect = nsectors & 0xff; |
Bartlomiej Zolnierkiewicz | 2bd06b2 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 240 | tf->lbal = sect; |
| 241 | tf->lbam = cyl; |
| 242 | tf->lbah = cyl >> 8; |
| 243 | tf->device = head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | } |
| 245 | |
Bartlomiej Zolnierkiewicz | ba76ae3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 246 | if (rq_data_dir(rq)) |
| 247 | task.tf_flags |= IDE_TFLAG_WRITE; |
| 248 | |
| 249 | ide_tf_set_cmd(drive, &task, dma); |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 250 | if (!dma) |
| 251 | hwif->data_phase = task.data_phase; |
| 252 | task.rq = rq; |
Bartlomiej Zolnierkiewicz | ba76ae3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 253 | |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 254 | rc = do_rw_taskfile(drive, &task); |
Bartlomiej Zolnierkiewicz | 2bd06b2 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 255 | |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 256 | if (rc == ide_stopped && dma) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | /* fallback to PIO */ |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 258 | task.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK; |
Bartlomiej Zolnierkiewicz | ba76ae3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 259 | ide_tf_set_cmd(drive, &task, 0); |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 260 | hwif->data_phase = task.data_phase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | ide_init_sg_cmd(drive, rq); |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 262 | rc = do_rw_taskfile(drive, &task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | } |
| 264 | |
Bartlomiej Zolnierkiewicz | f6e29e3 | 2008-01-25 22:17:16 +0100 | [diff] [blame] | 265 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | /* |
| 269 | * 268435455 == 137439 MB or 28bit limit |
| 270 | * 320173056 == 163929 MB or 48bit addressing |
| 271 | * 1073741822 == 549756 MB or 48bit addressing fake drive |
| 272 | */ |
| 273 | |
| 274 | static ide_startstop_t ide_do_rw_disk (ide_drive_t *drive, struct request *rq, sector_t block) |
| 275 | { |
| 276 | ide_hwif_t *hwif = HWIF(drive); |
| 277 | |
| 278 | BUG_ON(drive->blocked); |
| 279 | |
| 280 | if (!blk_fs_request(rq)) { |
| 281 | blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command"); |
| 282 | ide_end_request(drive, 0, 0); |
| 283 | return ide_stopped; |
| 284 | } |
| 285 | |
Richard Purdie | 2bfb646 | 2006-03-31 02:31:16 -0800 | [diff] [blame] | 286 | ledtrig_ide_activity(); |
| 287 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n", |
| 289 | drive->name, rq_data_dir(rq) == READ ? "read" : "writ", |
Michael Richardson | c2f8311 | 2006-02-07 12:58:33 -0800 | [diff] [blame] | 290 | (unsigned long long)block, rq->nr_sectors, |
| 291 | (unsigned long)rq->buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
| 293 | if (hwif->rw_disk) |
| 294 | hwif->rw_disk(drive, rq); |
| 295 | |
| 296 | return __ide_do_rw_disk(drive, rq, block); |
| 297 | } |
| 298 | |
| 299 | /* |
| 300 | * Queries for true maximum capacity of the drive. |
| 301 | * Returns maximum LBA address (> 0) of the drive, 0 if failed. |
| 302 | */ |
Bartlomiej Zolnierkiewicz | 7a3b751 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 303 | static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | { |
| 305 | ide_task_t args; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 306 | struct ide_taskfile *tf = &args.tf; |
Bartlomiej Zolnierkiewicz | 7a3b751 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 307 | u64 addr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
| 309 | /* Create IDE/ATA command request structure */ |
| 310 | memset(&args, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 7a3b751 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 311 | if (lba48) |
| 312 | tf->command = WIN_READ_NATIVE_MAX_EXT; |
| 313 | else |
| 314 | tf->command = WIN_READ_NATIVE_MAX; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 315 | tf->device = ATA_LBA; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 316 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | a3bbb9d | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 317 | if (lba48) |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 318 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | /* submit command request */ |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 320 | ide_no_data_taskfile(drive, &args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
| 322 | /* if OK, compute maximum address value */ |
Bartlomiej Zolnierkiewicz | a501633 | 2008-01-25 22:17:17 +0100 | [diff] [blame] | 323 | if ((tf->status & 0x01) == 0) |
| 324 | addr = ide_get_lba_addr(tf, lba48) + 1; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | return addr; |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Sets maximum virtual LBA address of the drive. |
| 331 | * Returns new maximum virtual LBA address (> 0) or 0 on failure. |
| 332 | */ |
Bartlomiej Zolnierkiewicz | 7a3b751 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 333 | static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
| 335 | ide_task_t args; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 336 | struct ide_taskfile *tf = &args.tf; |
Bartlomiej Zolnierkiewicz | 7a3b751 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 337 | u64 addr_set = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
| 339 | addr_req--; |
| 340 | /* Create IDE/ATA command request structure */ |
| 341 | memset(&args, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 342 | tf->lbal = (addr_req >> 0) & 0xff; |
| 343 | tf->lbam = (addr_req >>= 8) & 0xff; |
| 344 | tf->lbah = (addr_req >>= 8) & 0xff; |
Bartlomiej Zolnierkiewicz | 7a3b751 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 345 | if (lba48) { |
| 346 | tf->hob_lbal = (addr_req >>= 8) & 0xff; |
| 347 | tf->hob_lbam = (addr_req >>= 8) & 0xff; |
| 348 | tf->hob_lbah = (addr_req >>= 8) & 0xff; |
| 349 | tf->command = WIN_SET_MAX_EXT; |
| 350 | } else { |
| 351 | tf->device = (addr_req >>= 8) & 0x0f; |
| 352 | tf->command = WIN_SET_MAX; |
| 353 | } |
| 354 | tf->device |= ATA_LBA; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 355 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | a3bbb9d | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 356 | if (lba48) |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 357 | args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | /* submit command request */ |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 359 | ide_no_data_taskfile(drive, &args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | /* if OK, compute maximum address value */ |
Bartlomiej Zolnierkiewicz | a501633 | 2008-01-25 22:17:17 +0100 | [diff] [blame] | 361 | if ((tf->status & 0x01) == 0) |
| 362 | addr_set = ide_get_lba_addr(tf, lba48) + 1; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | return addr_set; |
| 365 | } |
| 366 | |
| 367 | static unsigned long long sectors_to_MB(unsigned long long n) |
| 368 | { |
| 369 | n <<= 9; /* make it bytes */ |
| 370 | do_div(n, 1000000); /* make it MB */ |
| 371 | return n; |
| 372 | } |
| 373 | |
| 374 | /* |
| 375 | * Bits 10 of command_set_1 and cfs_enable_1 must be equal, |
| 376 | * so on non-buggy drives we need test only one. |
| 377 | * However, we should also check whether these fields are valid. |
| 378 | */ |
| 379 | static inline int idedisk_supports_hpa(const struct hd_driveid *id) |
| 380 | { |
| 381 | return (id->command_set_1 & 0x0400) && (id->cfs_enable_1 & 0x0400); |
| 382 | } |
| 383 | |
| 384 | /* |
| 385 | * The same here. |
| 386 | */ |
| 387 | static inline int idedisk_supports_lba48(const struct hd_driveid *id) |
| 388 | { |
| 389 | return (id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400) |
| 390 | && id->lba_capacity_2; |
| 391 | } |
| 392 | |
Bartlomiej Zolnierkiewicz | b0244a0 | 2007-08-20 22:42:57 +0200 | [diff] [blame] | 393 | /* |
| 394 | * Some disks report total number of sectors instead of |
| 395 | * maximum sector address. We list them here. |
| 396 | */ |
| 397 | static const struct drive_list_entry hpa_list[] = { |
| 398 | { "ST340823A", NULL }, |
Jorge Juan Chico | 7062cdc | 2007-09-17 12:35:30 +0200 | [diff] [blame] | 399 | { "ST320413A", NULL }, |
Bartlomiej Zolnierkiewicz | b0244a0 | 2007-08-20 22:42:57 +0200 | [diff] [blame] | 400 | { NULL, NULL } |
| 401 | }; |
| 402 | |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 403 | static void idedisk_check_hpa(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | { |
| 405 | unsigned long long capacity, set_max; |
| 406 | int lba48 = idedisk_supports_lba48(drive->id); |
| 407 | |
| 408 | capacity = drive->capacity64; |
Bartlomiej Zolnierkiewicz | 7a3b751 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 409 | |
| 410 | set_max = idedisk_read_native_max_address(drive, lba48); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | |
Bartlomiej Zolnierkiewicz | b0244a0 | 2007-08-20 22:42:57 +0200 | [diff] [blame] | 412 | if (ide_in_drive_list(drive->id, hpa_list)) { |
| 413 | /* |
| 414 | * Since we are inclusive wrt to firmware revisions do this |
| 415 | * extra check and apply the workaround only when needed. |
| 416 | */ |
| 417 | if (set_max == capacity + 1) |
| 418 | set_max--; |
| 419 | } |
| 420 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | if (set_max <= capacity) |
| 422 | return; |
| 423 | |
| 424 | printk(KERN_INFO "%s: Host Protected Area detected.\n" |
| 425 | "\tcurrent capacity is %llu sectors (%llu MB)\n" |
| 426 | "\tnative capacity is %llu sectors (%llu MB)\n", |
| 427 | drive->name, |
| 428 | capacity, sectors_to_MB(capacity), |
| 429 | set_max, sectors_to_MB(set_max)); |
| 430 | |
Bartlomiej Zolnierkiewicz | 7a3b751 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 431 | set_max = idedisk_set_max_address(drive, set_max, lba48); |
| 432 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | if (set_max) { |
| 434 | drive->capacity64 = set_max; |
| 435 | printk(KERN_INFO "%s: Host Protected Area disabled.\n", |
| 436 | drive->name); |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | /* |
| 441 | * Compute drive->capacity, the full capacity of the drive |
| 442 | * Called with drive->id != NULL. |
| 443 | * |
| 444 | * To compute capacity, this uses either of |
| 445 | * |
| 446 | * 1. CHS value set by user (whatever user sets will be trusted) |
| 447 | * 2. LBA value from target drive (require new ATA feature) |
| 448 | * 3. LBA value from system BIOS (new one is OK, old one may break) |
| 449 | * 4. CHS value from system BIOS (traditional style) |
| 450 | * |
| 451 | * in above order (i.e., if value of higher priority is available, |
| 452 | * reset will be ignored). |
| 453 | */ |
| 454 | static void init_idedisk_capacity (ide_drive_t *drive) |
| 455 | { |
| 456 | struct hd_driveid *id = drive->id; |
| 457 | /* |
| 458 | * If this drive supports the Host Protected Area feature set, |
| 459 | * then we may need to change our opinion about the drive's capacity. |
| 460 | */ |
| 461 | int hpa = idedisk_supports_hpa(id); |
| 462 | |
| 463 | if (idedisk_supports_lba48(id)) { |
| 464 | /* drive speaks 48-bit LBA */ |
| 465 | drive->select.b.lba = 1; |
| 466 | drive->capacity64 = id->lba_capacity_2; |
| 467 | if (hpa) |
| 468 | idedisk_check_hpa(drive); |
| 469 | } else if ((id->capability & 2) && lba_capacity_is_ok(id)) { |
| 470 | /* drive speaks 28-bit LBA */ |
| 471 | drive->select.b.lba = 1; |
| 472 | drive->capacity64 = id->lba_capacity; |
| 473 | if (hpa) |
| 474 | idedisk_check_hpa(drive); |
| 475 | } else { |
| 476 | /* drive speaks boring old 28-bit CHS */ |
| 477 | drive->capacity64 = drive->cyl * drive->head * drive->sect; |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | static sector_t idedisk_capacity (ide_drive_t *drive) |
| 482 | { |
| 483 | return drive->capacity64 - drive->sect0; |
| 484 | } |
| 485 | |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 486 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | static int smart_enable(ide_drive_t *drive) |
| 488 | { |
| 489 | ide_task_t args; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 490 | struct ide_taskfile *tf = &args.tf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
| 492 | memset(&args, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 493 | tf->feature = SMART_ENABLE; |
| 494 | tf->lbam = SMART_LCYL_PASS; |
| 495 | tf->lbah = SMART_HCYL_PASS; |
| 496 | tf->command = WIN_SMART; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 497 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 498 | return ide_no_data_taskfile(drive, &args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | } |
| 500 | |
Bartlomiej Zolnierkiewicz | 43e7c0c | 2007-10-20 00:32:37 +0200 | [diff] [blame] | 501 | static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | { |
| 503 | ide_task_t args; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 504 | struct ide_taskfile *tf = &args.tf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | |
| 506 | memset(&args, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 507 | tf->feature = sub_cmd; |
| 508 | tf->nsect = 0x01; |
| 509 | tf->lbam = SMART_LCYL_PASS; |
| 510 | tf->lbah = SMART_HCYL_PASS; |
| 511 | tf->command = WIN_SMART; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 512 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 513 | args.data_phase = TASKFILE_IN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | (void) smart_enable(drive); |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 515 | return ide_raw_taskfile(drive, &args, buf, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | } |
| 517 | |
| 518 | static int proc_idedisk_read_cache |
| 519 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 520 | { |
| 521 | ide_drive_t *drive = (ide_drive_t *) data; |
| 522 | char *out = page; |
| 523 | int len; |
| 524 | |
| 525 | if (drive->id_read) |
| 526 | len = sprintf(out,"%i\n", drive->id->buf_size / 2); |
| 527 | else |
| 528 | len = sprintf(out,"(none)\n"); |
| 529 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 530 | } |
| 531 | |
| 532 | static int proc_idedisk_read_capacity |
| 533 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 534 | { |
| 535 | ide_drive_t*drive = (ide_drive_t *)data; |
| 536 | int len; |
| 537 | |
| 538 | len = sprintf(page,"%llu\n", (long long)idedisk_capacity(drive)); |
| 539 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 540 | } |
| 541 | |
| 542 | static int proc_idedisk_read_smart_thresholds |
| 543 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 544 | { |
| 545 | ide_drive_t *drive = (ide_drive_t *)data; |
| 546 | int len = 0, i = 0; |
| 547 | |
Bartlomiej Zolnierkiewicz | 43e7c0c | 2007-10-20 00:32:37 +0200 | [diff] [blame] | 548 | if (get_smart_data(drive, page, SMART_READ_THRESHOLDS) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | unsigned short *val = (unsigned short *) page; |
| 550 | char *out = ((char *)val) + (SECTOR_WORDS * 4); |
| 551 | page = out; |
| 552 | do { |
| 553 | out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n'); |
| 554 | val += 1; |
| 555 | } while (i < (SECTOR_WORDS * 2)); |
| 556 | len = out - page; |
| 557 | } |
| 558 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 559 | } |
| 560 | |
| 561 | static int proc_idedisk_read_smart_values |
| 562 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 563 | { |
| 564 | ide_drive_t *drive = (ide_drive_t *)data; |
| 565 | int len = 0, i = 0; |
| 566 | |
Bartlomiej Zolnierkiewicz | 43e7c0c | 2007-10-20 00:32:37 +0200 | [diff] [blame] | 567 | if (get_smart_data(drive, page, SMART_READ_VALUES) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | unsigned short *val = (unsigned short *) page; |
| 569 | char *out = ((char *)val) + (SECTOR_WORDS * 4); |
| 570 | page = out; |
| 571 | do { |
| 572 | out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n'); |
| 573 | val += 1; |
| 574 | } while (i < (SECTOR_WORDS * 2)); |
| 575 | len = out - page; |
| 576 | } |
| 577 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 578 | } |
| 579 | |
| 580 | static ide_proc_entry_t idedisk_proc[] = { |
| 581 | { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL }, |
| 582 | { "capacity", S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL }, |
| 583 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, |
| 584 | { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_smart_values, NULL }, |
| 585 | { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_smart_thresholds, NULL }, |
| 586 | { NULL, 0, NULL, NULL } |
| 587 | }; |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 588 | #endif /* CONFIG_IDE_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 590 | static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | { |
| 592 | ide_drive_t *drive = q->queuedata; |
Bartlomiej Zolnierkiewicz | 813a0eb | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 593 | ide_task_t task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | |
Bartlomiej Zolnierkiewicz | 813a0eb | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 595 | memset(&task, 0, sizeof(task)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | if (ide_id_has_flush_cache_ext(drive->id) && |
| 597 | (drive->capacity64 >= (1UL << 28))) |
Bartlomiej Zolnierkiewicz | 813a0eb | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 598 | task.tf.command = WIN_FLUSH_CACHE_EXT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | else |
Bartlomiej Zolnierkiewicz | 813a0eb | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 600 | task.tf.command = WIN_FLUSH_CACHE; |
Bartlomiej Zolnierkiewicz | ac026ff | 2008-01-25 22:17:14 +0100 | [diff] [blame] | 601 | task.tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE; |
| 602 | task.data_phase = TASKFILE_NO_DATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | |
Bartlomiej Zolnierkiewicz | 813a0eb | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 604 | rq->cmd_type = REQ_TYPE_ATA_TASKFILE; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 605 | rq->cmd_flags |= REQ_SOFTBARRIER; |
Bartlomiej Zolnierkiewicz | 813a0eb | 2008-01-25 22:17:10 +0100 | [diff] [blame] | 606 | rq->special = &task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | } |
| 608 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | /* |
| 610 | * This is tightly woven into the driver->do_special can not touch. |
| 611 | * DON'T do it again until a total personality rewrite is committed. |
| 612 | */ |
| 613 | static int set_multcount(ide_drive_t *drive, int arg) |
| 614 | { |
| 615 | struct request rq; |
| 616 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 617 | if (arg < 0 || arg > drive->id->max_multsect) |
| 618 | return -EINVAL; |
| 619 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | if (drive->special.b.set_multmode) |
| 621 | return -EBUSY; |
Bartlomiej Zolnierkiewicz | 852738f | 2008-01-26 20:13:12 +0100 | [diff] [blame] | 622 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | ide_init_drive_cmd (&rq); |
Bartlomiej Zolnierkiewicz | 852738f | 2008-01-26 20:13:12 +0100 | [diff] [blame] | 624 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
| 625 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | drive->mult_req = arg; |
| 627 | drive->special.b.set_multmode = 1; |
| 628 | (void) ide_do_drive_cmd (drive, &rq, ide_wait); |
| 629 | return (drive->mult_count == arg) ? 0 : -EIO; |
| 630 | } |
| 631 | |
| 632 | static int set_nowerr(ide_drive_t *drive, int arg) |
| 633 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 634 | if (arg < 0 || arg > 1) |
| 635 | return -EINVAL; |
| 636 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | if (ide_spin_wait_hwgroup(drive)) |
| 638 | return -EBUSY; |
| 639 | drive->nowerr = arg; |
| 640 | drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT; |
| 641 | spin_unlock_irq(&ide_lock); |
| 642 | return 0; |
| 643 | } |
| 644 | |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 645 | static void update_ordered(ide_drive_t *drive) |
| 646 | { |
| 647 | struct hd_driveid *id = drive->id; |
| 648 | unsigned ordered = QUEUE_ORDERED_NONE; |
| 649 | prepare_flush_fn *prep_fn = NULL; |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 650 | |
| 651 | if (drive->wcache) { |
| 652 | unsigned long long capacity; |
| 653 | int barrier; |
| 654 | /* |
| 655 | * We must avoid issuing commands a drive does not |
| 656 | * understand or we may crash it. We check flush cache |
| 657 | * is supported. We also check we have the LBA48 flush |
| 658 | * cache if the drive capacity is too large. By this |
| 659 | * time we have trimmed the drive capacity if LBA48 is |
| 660 | * not available so we don't need to recheck that. |
| 661 | */ |
| 662 | capacity = idedisk_capacity(drive); |
Jens Axboe | 3619348 | 2006-07-28 08:54:59 +0200 | [diff] [blame] | 663 | barrier = ide_id_has_flush_cache(id) && !drive->noflush && |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 664 | (drive->addressing == 0 || capacity <= (1ULL << 28) || |
| 665 | ide_id_has_flush_cache_ext(id)); |
| 666 | |
| 667 | printk(KERN_INFO "%s: cache flushes %ssupported\n", |
Jean Delvare | f7ad836 | 2006-02-03 03:04:57 -0800 | [diff] [blame] | 668 | drive->name, barrier ? "" : "not "); |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 669 | |
| 670 | if (barrier) { |
| 671 | ordered = QUEUE_ORDERED_DRAIN_FLUSH; |
| 672 | prep_fn = idedisk_prepare_flush; |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 673 | } |
| 674 | } else |
| 675 | ordered = QUEUE_ORDERED_DRAIN; |
| 676 | |
| 677 | blk_queue_ordered(drive->queue, ordered, prep_fn); |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 678 | } |
| 679 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | static int write_cache(ide_drive_t *drive, int arg) |
| 681 | { |
| 682 | ide_task_t args; |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 683 | int err = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 685 | if (arg < 0 || arg > 1) |
| 686 | return -EINVAL; |
| 687 | |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 688 | if (ide_id_has_flush_cache(drive->id)) { |
| 689 | memset(&args, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 690 | args.tf.feature = arg ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE; |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 692 | args.tf.command = WIN_SETFEATURES; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 693 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 694 | err = ide_no_data_taskfile(drive, &args); |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 695 | if (err == 0) |
| 696 | drive->wcache = arg; |
| 697 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 699 | update_ordered(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | |
Tejun Heo | 3e087b5 | 2006-01-06 09:57:31 +0100 | [diff] [blame] | 701 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | } |
| 703 | |
| 704 | static int do_idedisk_flushcache (ide_drive_t *drive) |
| 705 | { |
| 706 | ide_task_t args; |
| 707 | |
| 708 | memset(&args, 0, sizeof(ide_task_t)); |
| 709 | if (ide_id_has_flush_cache_ext(drive->id)) |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 710 | args.tf.command = WIN_FLUSH_CACHE_EXT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | else |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 712 | args.tf.command = WIN_FLUSH_CACHE; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 713 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 714 | return ide_no_data_taskfile(drive, &args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | } |
| 716 | |
| 717 | static int set_acoustic (ide_drive_t *drive, int arg) |
| 718 | { |
| 719 | ide_task_t args; |
| 720 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 721 | if (arg < 0 || arg > 254) |
| 722 | return -EINVAL; |
| 723 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | memset(&args, 0, sizeof(ide_task_t)); |
Bartlomiej Zolnierkiewicz | 650d841 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 725 | args.tf.feature = arg ? SETFEATURES_EN_AAM : SETFEATURES_DIS_AAM; |
| 726 | args.tf.nsect = arg; |
| 727 | args.tf.command = WIN_SETFEATURES; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 728 | args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | 9a3c49b | 2008-01-25 22:17:07 +0100 | [diff] [blame] | 729 | ide_no_data_taskfile(drive, &args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | drive->acoustic = arg; |
| 731 | return 0; |
| 732 | } |
| 733 | |
| 734 | /* |
| 735 | * drive->addressing: |
| 736 | * 0: 28-bit |
| 737 | * 1: 48-bit |
| 738 | * 2: 48-bit capable doing 28-bit |
| 739 | */ |
| 740 | static int set_lba_addressing(ide_drive_t *drive, int arg) |
| 741 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 742 | if (arg < 0 || arg > 2) |
| 743 | return -EINVAL; |
| 744 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | drive->addressing = 0; |
| 746 | |
Bartlomiej Zolnierkiewicz | 238e4f1 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 747 | if (drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | return 0; |
| 749 | |
| 750 | if (!idedisk_supports_lba48(drive->id)) |
| 751 | return -EIO; |
| 752 | drive->addressing = arg; |
| 753 | return 0; |
| 754 | } |
| 755 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 756 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | static void idedisk_add_settings(ide_drive_t *drive) |
| 758 | { |
| 759 | struct hd_driveid *id = drive->id; |
| 760 | |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 761 | ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->bios_cyl, NULL); |
| 762 | ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); |
| 763 | ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); |
| 764 | ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1, &drive->addressing, set_lba_addressing); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 765 | ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0, id->max_multsect, 1, 1, &drive->mult_count, set_multcount); |
| 766 | ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr); |
| 767 | ide_add_setting(drive, "lun", SETTING_RW, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL); |
| 768 | ide_add_setting(drive, "wcache", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->wcache, write_cache); |
| 769 | ide_add_setting(drive, "acoustic", SETTING_RW, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic); |
| 770 | ide_add_setting(drive, "failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL); |
| 771 | ide_add_setting(drive, "max_failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | } |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 773 | #else |
| 774 | static inline void idedisk_add_settings(ide_drive_t *drive) { ; } |
| 775 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | |
| 777 | static void idedisk_setup (ide_drive_t *drive) |
| 778 | { |
Bartlomiej Zolnierkiewicz | 238e4f1 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 779 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | struct hd_driveid *id = drive->id; |
| 781 | unsigned long long capacity; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | |
| 783 | idedisk_add_settings(drive); |
| 784 | |
| 785 | if (drive->id_read == 0) |
| 786 | return; |
| 787 | |
Richard Purdie | 9810933 | 2006-02-03 03:04:55 -0800 | [diff] [blame] | 788 | if (drive->removable) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | /* |
| 790 | * Removable disks (eg. SYQUEST); ignore 'WD' drives |
| 791 | */ |
| 792 | if (id->model[0] != 'W' || id->model[1] != 'D') { |
| 793 | drive->doorlocking = 1; |
| 794 | } |
| 795 | } |
| 796 | |
| 797 | (void)set_lba_addressing(drive, 1); |
| 798 | |
| 799 | if (drive->addressing == 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | int max_s = 2048; |
| 801 | |
| 802 | if (max_s > hwif->rqsize) |
| 803 | max_s = hwif->rqsize; |
| 804 | |
| 805 | blk_queue_max_sectors(drive->queue, max_s); |
| 806 | } |
| 807 | |
| 808 | printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, drive->queue->max_sectors / 2); |
| 809 | |
| 810 | /* calculate drive capacity, and select LBA if possible */ |
| 811 | init_idedisk_capacity (drive); |
| 812 | |
| 813 | /* limit drive capacity to 137GB if LBA48 cannot be used */ |
| 814 | if (drive->addressing == 0 && drive->capacity64 > 1ULL << 28) { |
| 815 | printk(KERN_WARNING "%s: cannot use LBA48 - full capacity " |
| 816 | "%llu sectors (%llu MB)\n", |
| 817 | drive->name, (unsigned long long)drive->capacity64, |
| 818 | sectors_to_MB(drive->capacity64)); |
| 819 | drive->capacity64 = 1ULL << 28; |
| 820 | } |
| 821 | |
Bartlomiej Zolnierkiewicz | 238e4f1 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 822 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && drive->addressing) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | if (drive->capacity64 > 1ULL << 28) { |
| 824 | printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode will" |
| 825 | " be used for accessing sectors > %u\n", |
| 826 | drive->name, 1 << 28); |
| 827 | } else |
| 828 | drive->addressing = 0; |
| 829 | } |
| 830 | |
| 831 | /* |
| 832 | * if possible, give fdisk access to more of the drive, |
| 833 | * by correcting bios_cyls: |
| 834 | */ |
| 835 | capacity = idedisk_capacity (drive); |
| 836 | if (!drive->forced_geom) { |
| 837 | |
| 838 | if (idedisk_supports_lba48(drive->id)) { |
| 839 | /* compatibility */ |
| 840 | drive->bios_sect = 63; |
| 841 | drive->bios_head = 255; |
| 842 | } |
| 843 | |
| 844 | if (drive->bios_sect && drive->bios_head) { |
| 845 | unsigned int cap0 = capacity; /* truncate to 32 bits */ |
| 846 | unsigned int cylsz, cyl; |
| 847 | |
| 848 | if (cap0 != capacity) |
| 849 | drive->bios_cyl = 65535; |
| 850 | else { |
| 851 | cylsz = drive->bios_sect * drive->bios_head; |
| 852 | cyl = cap0 / cylsz; |
| 853 | if (cyl > 65535) |
| 854 | cyl = 65535; |
| 855 | if (cyl > drive->bios_cyl) |
| 856 | drive->bios_cyl = cyl; |
| 857 | } |
| 858 | } |
| 859 | } |
| 860 | printk(KERN_INFO "%s: %llu sectors (%llu MB)", |
| 861 | drive->name, capacity, sectors_to_MB(capacity)); |
| 862 | |
| 863 | /* Only print cache size when it was specified */ |
| 864 | if (id->buf_size) |
| 865 | printk (" w/%dKiB Cache", id->buf_size/2); |
| 866 | |
Bartlomiej Zolnierkiewicz | 3ab7efe | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 867 | printk(KERN_CONT ", CHS=%d/%d/%d\n", |
| 868 | drive->bios_cyl, drive->bios_head, drive->bios_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | /* write cache enabled? */ |
| 871 | if ((id->csfo & 1) || (id->cfs_enable_1 & (1 << 5))) |
| 872 | drive->wcache = 1; |
| 873 | |
| 874 | write_cache(drive, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | } |
| 876 | |
| 877 | static void ide_cacheflush_p(ide_drive_t *drive) |
| 878 | { |
| 879 | if (!drive->wcache || !ide_id_has_flush_cache(drive->id)) |
| 880 | return; |
| 881 | |
| 882 | if (do_idedisk_flushcache(drive)) |
| 883 | printk(KERN_INFO "%s: wcache flush failed!\n", drive->name); |
| 884 | } |
| 885 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 886 | static void ide_disk_remove(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | { |
| 888 | struct ide_disk_obj *idkp = drive->driver_data; |
| 889 | struct gendisk *g = idkp->disk; |
| 890 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 891 | ide_proc_unregister_driver(drive, idkp->driver); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 892 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | del_gendisk(g); |
| 894 | |
Bartlomiej Zolnierkiewicz | d36fef6 | 2005-12-15 02:19:20 +0100 | [diff] [blame] | 895 | ide_cacheflush_p(drive); |
| 896 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | ide_disk_put(idkp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | } |
| 899 | |
| 900 | static void ide_disk_release(struct kref *kref) |
| 901 | { |
| 902 | struct ide_disk_obj *idkp = to_ide_disk(kref); |
| 903 | ide_drive_t *drive = idkp->drive; |
| 904 | struct gendisk *g = idkp->disk; |
| 905 | |
| 906 | drive->driver_data = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | g->private_data = NULL; |
| 908 | put_disk(g); |
| 909 | kfree(idkp); |
| 910 | } |
| 911 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 912 | static int ide_disk_probe(ide_drive_t *drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 914 | /* |
| 915 | * On HPA drives the capacity needs to be |
| 916 | * reinitilized on resume otherwise the disk |
| 917 | * can not be used and a hard reset is required |
| 918 | */ |
| 919 | static void ide_disk_resume(ide_drive_t *drive) |
| 920 | { |
| 921 | if (idedisk_supports_hpa(drive->id)) |
| 922 | init_idedisk_capacity(drive); |
| 923 | } |
| 924 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 925 | static void ide_device_shutdown(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | #ifdef CONFIG_ALPHA |
| 928 | /* On Alpha, halt(8) doesn't actually turn the machine off, |
| 929 | it puts you into the sort of firmware monitor. Typically, |
| 930 | it's used to boot another kernel image, so it's not much |
| 931 | different from reboot(8). Therefore, we don't need to |
| 932 | spin down the disk in this case, especially since Alpha |
| 933 | firmware doesn't handle disks in standby mode properly. |
| 934 | On the other hand, it's reasonably safe to turn the power |
| 935 | off when the shutdown process reaches the firmware prompt, |
| 936 | as the firmware initialization takes rather long time - |
| 937 | at least 10 seconds, which should be sufficient for |
| 938 | the disk to expire its write cache. */ |
| 939 | if (system_state != SYSTEM_POWER_OFF) { |
| 940 | #else |
| 941 | if (system_state == SYSTEM_RESTART) { |
| 942 | #endif |
| 943 | ide_cacheflush_p(drive); |
| 944 | return; |
| 945 | } |
| 946 | |
| 947 | printk("Shutdown: %s\n", drive->name); |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 948 | drive->gendev.bus->suspend(&drive->gendev, PMSG_SUSPEND); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | } |
| 950 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | static ide_driver_t idedisk_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | .gen_driver = { |
Laurent Riffard | 4ef3b8f | 2005-11-18 22:15:40 +0100 | [diff] [blame] | 953 | .owner = THIS_MODULE, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 954 | .name = "ide-disk", |
| 955 | .bus = &ide_bus_type, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | }, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 957 | .probe = ide_disk_probe, |
| 958 | .remove = ide_disk_remove, |
Lee Trager | 0d2157f | 2007-06-08 15:14:30 +0200 | [diff] [blame] | 959 | .resume = ide_disk_resume, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 960 | .shutdown = ide_device_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | .version = IDEDISK_VERSION, |
| 962 | .media = ide_disk, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | .supports_dsc_overlap = 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | .do_request = ide_do_rw_disk, |
| 965 | .end_request = ide_end_request, |
| 966 | .error = __ide_error, |
| 967 | .abort = __ide_abort, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 968 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | .proc = idedisk_proc, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 970 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | }; |
| 972 | |
Bartlomiej Zolnierkiewicz | 29ec683 | 2008-01-26 20:12:59 +0100 | [diff] [blame] | 973 | static int idedisk_set_doorlock(ide_drive_t *drive, int on) |
| 974 | { |
| 975 | ide_task_t task; |
| 976 | |
| 977 | memset(&task, 0, sizeof(task)); |
| 978 | task.tf.command = on ? WIN_DOORLOCK : WIN_DOORUNLOCK; |
Bartlomiej Zolnierkiewicz | 657cc1a | 2008-01-26 20:13:10 +0100 | [diff] [blame] | 979 | task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE; |
Bartlomiej Zolnierkiewicz | 29ec683 | 2008-01-26 20:12:59 +0100 | [diff] [blame] | 980 | |
| 981 | return ide_no_data_taskfile(drive, &task); |
| 982 | } |
| 983 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | static int idedisk_open(struct inode *inode, struct file *filp) |
| 985 | { |
| 986 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 987 | struct ide_disk_obj *idkp; |
| 988 | ide_drive_t *drive; |
| 989 | |
| 990 | if (!(idkp = ide_disk_get(disk))) |
| 991 | return -ENXIO; |
| 992 | |
| 993 | drive = idkp->drive; |
| 994 | |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 995 | idkp->openers++; |
| 996 | |
| 997 | if (drive->removable && idkp->openers == 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | check_disk_change(inode->i_bdev); |
| 999 | /* |
| 1000 | * Ignore the return code from door_lock, |
| 1001 | * since the open() has already succeeded, |
| 1002 | * and the door_lock is irrelevant at this point. |
| 1003 | */ |
Bartlomiej Zolnierkiewicz | 29ec683 | 2008-01-26 20:12:59 +0100 | [diff] [blame] | 1004 | if (drive->doorlocking && idedisk_set_doorlock(drive, 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | drive->doorlocking = 0; |
| 1006 | } |
| 1007 | return 0; |
| 1008 | } |
| 1009 | |
| 1010 | static int idedisk_release(struct inode *inode, struct file *filp) |
| 1011 | { |
| 1012 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 1013 | struct ide_disk_obj *idkp = ide_disk_g(disk); |
| 1014 | ide_drive_t *drive = idkp->drive; |
| 1015 | |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1016 | if (idkp->openers == 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | ide_cacheflush_p(drive); |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1018 | |
| 1019 | if (drive->removable && idkp->openers == 1) { |
Bartlomiej Zolnierkiewicz | 29ec683 | 2008-01-26 20:12:59 +0100 | [diff] [blame] | 1020 | if (drive->doorlocking && idedisk_set_doorlock(drive, 0)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | drive->doorlocking = 0; |
| 1022 | } |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 1023 | |
| 1024 | idkp->openers--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | |
| 1026 | ide_disk_put(idkp); |
| 1027 | |
| 1028 | return 0; |
| 1029 | } |
| 1030 | |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1031 | static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 1032 | { |
| 1033 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); |
| 1034 | ide_drive_t *drive = idkp->drive; |
| 1035 | |
| 1036 | geo->heads = drive->bios_head; |
| 1037 | geo->sectors = drive->bios_sect; |
| 1038 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ |
| 1039 | return 0; |
| 1040 | } |
| 1041 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | static int idedisk_ioctl(struct inode *inode, struct file *file, |
| 1043 | unsigned int cmd, unsigned long arg) |
| 1044 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1045 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | struct block_device *bdev = inode->i_bdev; |
| 1047 | struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1048 | ide_drive_t *drive = idkp->drive; |
| 1049 | int err, (*setfunc)(ide_drive_t *, int); |
| 1050 | u8 *val; |
| 1051 | |
| 1052 | switch (cmd) { |
| 1053 | case HDIO_GET_ADDRESS: val = &drive->addressing; goto read_val; |
| 1054 | case HDIO_GET_MULTCOUNT: val = &drive->mult_count; goto read_val; |
| 1055 | case HDIO_GET_NOWERR: val = &drive->nowerr; goto read_val; |
| 1056 | case HDIO_GET_WCACHE: val = &drive->wcache; goto read_val; |
| 1057 | case HDIO_GET_ACOUSTIC: val = &drive->acoustic; goto read_val; |
| 1058 | case HDIO_SET_ADDRESS: setfunc = set_lba_addressing; goto set_val; |
| 1059 | case HDIO_SET_MULTCOUNT: setfunc = set_multcount; goto set_val; |
| 1060 | case HDIO_SET_NOWERR: setfunc = set_nowerr; goto set_val; |
| 1061 | case HDIO_SET_WCACHE: setfunc = write_cache; goto set_val; |
| 1062 | case HDIO_SET_ACOUSTIC: setfunc = set_acoustic; goto set_val; |
| 1063 | } |
| 1064 | |
| 1065 | return generic_ide_ioctl(drive, file, bdev, cmd, arg); |
| 1066 | |
| 1067 | read_val: |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 1068 | mutex_lock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1069 | spin_lock_irqsave(&ide_lock, flags); |
| 1070 | err = *val; |
| 1071 | spin_unlock_irqrestore(&ide_lock, flags); |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 1072 | mutex_unlock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1073 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
| 1074 | |
| 1075 | set_val: |
| 1076 | if (bdev != bdev->bd_contains) |
| 1077 | err = -EINVAL; |
| 1078 | else { |
| 1079 | if (!capable(CAP_SYS_ADMIN)) |
| 1080 | err = -EACCES; |
| 1081 | else { |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 1082 | mutex_lock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1083 | err = setfunc(drive, arg); |
Matthias Kaehlcke | f9383c4 | 2007-07-09 23:17:56 +0200 | [diff] [blame] | 1084 | mutex_unlock(&ide_setting_mtx); |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1085 | } |
| 1086 | } |
| 1087 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | } |
| 1089 | |
| 1090 | static int idedisk_media_changed(struct gendisk *disk) |
| 1091 | { |
| 1092 | struct ide_disk_obj *idkp = ide_disk_g(disk); |
| 1093 | ide_drive_t *drive = idkp->drive; |
| 1094 | |
| 1095 | /* do not scan partitions twice if this is a removable device */ |
| 1096 | if (drive->attach) { |
| 1097 | drive->attach = 0; |
| 1098 | return 0; |
| 1099 | } |
| 1100 | /* if removable, always assume it was changed */ |
| 1101 | return drive->removable; |
| 1102 | } |
| 1103 | |
| 1104 | static int idedisk_revalidate_disk(struct gendisk *disk) |
| 1105 | { |
| 1106 | struct ide_disk_obj *idkp = ide_disk_g(disk); |
| 1107 | set_capacity(disk, idedisk_capacity(idkp->drive)); |
| 1108 | return 0; |
| 1109 | } |
| 1110 | |
| 1111 | static struct block_device_operations idedisk_ops = { |
| 1112 | .owner = THIS_MODULE, |
| 1113 | .open = idedisk_open, |
| 1114 | .release = idedisk_release, |
| 1115 | .ioctl = idedisk_ioctl, |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1116 | .getgeo = idedisk_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | .media_changed = idedisk_media_changed, |
| 1118 | .revalidate_disk= idedisk_revalidate_disk |
| 1119 | }; |
| 1120 | |
| 1121 | MODULE_DESCRIPTION("ATA DISK Driver"); |
| 1122 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1123 | static int ide_disk_probe(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | { |
| 1125 | struct ide_disk_obj *idkp; |
| 1126 | struct gendisk *g; |
| 1127 | |
| 1128 | /* strstr("foo", "") is non-NULL */ |
| 1129 | if (!strstr("ide-disk", drive->driver_req)) |
| 1130 | goto failed; |
| 1131 | if (!drive->present) |
| 1132 | goto failed; |
| 1133 | if (drive->media != ide_disk) |
| 1134 | goto failed; |
| 1135 | |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 1136 | idkp = kzalloc(sizeof(*idkp), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | if (!idkp) |
| 1138 | goto failed; |
| 1139 | |
Christoph Lameter | 1946089 | 2005-06-23 00:08:19 -0700 | [diff] [blame] | 1140 | g = alloc_disk_node(1 << PARTN_BITS, |
Christoph Lameter | 86b3786 | 2005-08-09 19:59:21 -0700 | [diff] [blame] | 1141 | hwif_to_node(drive->hwif)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | if (!g) |
| 1143 | goto out_free_idkp; |
| 1144 | |
| 1145 | ide_init_disk(g, drive); |
| 1146 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1147 | ide_proc_register_driver(drive, &idedisk_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | kref_init(&idkp->kref); |
| 1150 | |
| 1151 | idkp->drive = drive; |
| 1152 | idkp->driver = &idedisk_driver; |
| 1153 | idkp->disk = g; |
| 1154 | |
| 1155 | g->private_data = &idkp->driver; |
| 1156 | |
| 1157 | drive->driver_data = idkp; |
| 1158 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | idedisk_setup(drive); |
| 1160 | if ((!drive->head || drive->head > 16) && !drive->select.b.lba) { |
| 1161 | printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n", |
| 1162 | drive->name, drive->head); |
| 1163 | drive->attach = 0; |
| 1164 | } else |
| 1165 | drive->attach = 1; |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | g->minors = 1 << PARTN_BITS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | g->driverfs_dev = &drive->gendev; |
| 1169 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
| 1170 | set_capacity(g, idedisk_capacity(drive)); |
| 1171 | g->fops = &idedisk_ops; |
| 1172 | add_disk(g); |
| 1173 | return 0; |
| 1174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | out_free_idkp: |
| 1176 | kfree(idkp); |
| 1177 | failed: |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1178 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | } |
| 1180 | |
| 1181 | static void __exit idedisk_exit (void) |
| 1182 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1183 | driver_unregister(&idedisk_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | } |
| 1185 | |
Bartlomiej Zolnierkiewicz | 17514e8 | 2005-11-19 22:24:35 +0100 | [diff] [blame] | 1186 | static int __init idedisk_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1188 | return driver_register(&idedisk_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | } |
| 1190 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 1191 | MODULE_ALIAS("ide:*m-disk*"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | module_init(idedisk_init); |
| 1193 | module_exit(idedisk_exit); |
| 1194 | MODULE_LICENSE("GPL"); |