Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> |
| 3 | * Copyright (C) 2003 Red Hat <alan@redhat.com> |
| 4 | * |
| 5 | */ |
| 6 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | #include <linux/module.h> |
| 8 | #include <linux/types.h> |
| 9 | #include <linux/string.h> |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/timer.h> |
| 12 | #include <linux/mm.h> |
| 13 | #include <linux/interrupt.h> |
| 14 | #include <linux/major.h> |
| 15 | #include <linux/errno.h> |
| 16 | #include <linux/genhd.h> |
| 17 | #include <linux/blkpg.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <linux/pci.h> |
| 20 | #include <linux/delay.h> |
| 21 | #include <linux/hdreg.h> |
| 22 | #include <linux/ide.h> |
| 23 | #include <linux/bitops.h> |
Michal Schmidt | 1e86240 | 2006-07-30 03:03:29 -0700 | [diff] [blame] | 24 | #include <linux/nmi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
| 26 | #include <asm/byteorder.h> |
| 27 | #include <asm/irq.h> |
| 28 | #include <asm/uaccess.h> |
| 29 | #include <asm/io.h> |
| 30 | |
| 31 | /* |
| 32 | * Conventional PIO operations for ATA devices |
| 33 | */ |
| 34 | |
| 35 | static u8 ide_inb (unsigned long port) |
| 36 | { |
| 37 | return (u8) inb(port); |
| 38 | } |
| 39 | |
| 40 | static u16 ide_inw (unsigned long port) |
| 41 | { |
| 42 | return (u16) inw(port); |
| 43 | } |
| 44 | |
| 45 | static void ide_insw (unsigned long port, void *addr, u32 count) |
| 46 | { |
| 47 | insw(port, addr, count); |
| 48 | } |
| 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | static void ide_insl (unsigned long port, void *addr, u32 count) |
| 51 | { |
| 52 | insl(port, addr, count); |
| 53 | } |
| 54 | |
| 55 | static void ide_outb (u8 val, unsigned long port) |
| 56 | { |
| 57 | outb(val, port); |
| 58 | } |
| 59 | |
| 60 | static void ide_outbsync (ide_drive_t *drive, u8 addr, unsigned long port) |
| 61 | { |
| 62 | outb(addr, port); |
| 63 | } |
| 64 | |
| 65 | static void ide_outw (u16 val, unsigned long port) |
| 66 | { |
| 67 | outw(val, port); |
| 68 | } |
| 69 | |
| 70 | static void ide_outsw (unsigned long port, void *addr, u32 count) |
| 71 | { |
| 72 | outsw(port, addr, count); |
| 73 | } |
| 74 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | static void ide_outsl (unsigned long port, void *addr, u32 count) |
| 76 | { |
| 77 | outsl(port, addr, count); |
| 78 | } |
| 79 | |
| 80 | void default_hwif_iops (ide_hwif_t *hwif) |
| 81 | { |
| 82 | hwif->OUTB = ide_outb; |
| 83 | hwif->OUTBSYNC = ide_outbsync; |
| 84 | hwif->OUTW = ide_outw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | hwif->OUTSW = ide_outsw; |
| 86 | hwif->OUTSL = ide_outsl; |
| 87 | hwif->INB = ide_inb; |
| 88 | hwif->INW = ide_inw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | hwif->INSW = ide_insw; |
| 90 | hwif->INSL = ide_insl; |
| 91 | } |
| 92 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | /* |
| 94 | * MMIO operations, typically used for SATA controllers |
| 95 | */ |
| 96 | |
| 97 | static u8 ide_mm_inb (unsigned long port) |
| 98 | { |
| 99 | return (u8) readb((void __iomem *) port); |
| 100 | } |
| 101 | |
| 102 | static u16 ide_mm_inw (unsigned long port) |
| 103 | { |
| 104 | return (u16) readw((void __iomem *) port); |
| 105 | } |
| 106 | |
| 107 | static void ide_mm_insw (unsigned long port, void *addr, u32 count) |
| 108 | { |
| 109 | __ide_mm_insw((void __iomem *) port, addr, count); |
| 110 | } |
| 111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | static void ide_mm_insl (unsigned long port, void *addr, u32 count) |
| 113 | { |
| 114 | __ide_mm_insl((void __iomem *) port, addr, count); |
| 115 | } |
| 116 | |
| 117 | static void ide_mm_outb (u8 value, unsigned long port) |
| 118 | { |
| 119 | writeb(value, (void __iomem *) port); |
| 120 | } |
| 121 | |
| 122 | static void ide_mm_outbsync (ide_drive_t *drive, u8 value, unsigned long port) |
| 123 | { |
| 124 | writeb(value, (void __iomem *) port); |
| 125 | } |
| 126 | |
| 127 | static void ide_mm_outw (u16 value, unsigned long port) |
| 128 | { |
| 129 | writew(value, (void __iomem *) port); |
| 130 | } |
| 131 | |
| 132 | static void ide_mm_outsw (unsigned long port, void *addr, u32 count) |
| 133 | { |
| 134 | __ide_mm_outsw((void __iomem *) port, addr, count); |
| 135 | } |
| 136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | static void ide_mm_outsl (unsigned long port, void *addr, u32 count) |
| 138 | { |
| 139 | __ide_mm_outsl((void __iomem *) port, addr, count); |
| 140 | } |
| 141 | |
| 142 | void default_hwif_mmiops (ide_hwif_t *hwif) |
| 143 | { |
| 144 | hwif->OUTB = ide_mm_outb; |
| 145 | /* Most systems will need to override OUTBSYNC, alas however |
| 146 | this one is controller specific! */ |
| 147 | hwif->OUTBSYNC = ide_mm_outbsync; |
| 148 | hwif->OUTW = ide_mm_outw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | hwif->OUTSW = ide_mm_outsw; |
| 150 | hwif->OUTSL = ide_mm_outsl; |
| 151 | hwif->INB = ide_mm_inb; |
| 152 | hwif->INW = ide_mm_inw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | hwif->INSW = ide_mm_insw; |
| 154 | hwif->INSL = ide_mm_insl; |
| 155 | } |
| 156 | |
| 157 | EXPORT_SYMBOL(default_hwif_mmiops); |
| 158 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | void SELECT_DRIVE (ide_drive_t *drive) |
| 160 | { |
| 161 | if (HWIF(drive)->selectproc) |
| 162 | HWIF(drive)->selectproc(drive); |
| 163 | HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG); |
| 164 | } |
| 165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | void SELECT_MASK (ide_drive_t *drive, int mask) |
| 167 | { |
| 168 | if (HWIF(drive)->maskproc) |
| 169 | HWIF(drive)->maskproc(drive, mask); |
| 170 | } |
| 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | /* |
| 173 | * Some localbus EIDE interfaces require a special access sequence |
| 174 | * when using 32-bit I/O instructions to transfer data. We call this |
| 175 | * the "vlb_sync" sequence, which consists of three successive reads |
| 176 | * of the sector count register location, with interrupts disabled |
| 177 | * to ensure that the reads all happen together. |
| 178 | */ |
| 179 | static void ata_vlb_sync(ide_drive_t *drive, unsigned long port) |
| 180 | { |
| 181 | (void) HWIF(drive)->INB(port); |
| 182 | (void) HWIF(drive)->INB(port); |
| 183 | (void) HWIF(drive)->INB(port); |
| 184 | } |
| 185 | |
| 186 | /* |
| 187 | * This is used for most PIO data transfers *from* the IDE interface |
| 188 | */ |
| 189 | static void ata_input_data(ide_drive_t *drive, void *buffer, u32 wcount) |
| 190 | { |
| 191 | ide_hwif_t *hwif = HWIF(drive); |
| 192 | u8 io_32bit = drive->io_32bit; |
| 193 | |
| 194 | if (io_32bit) { |
| 195 | if (io_32bit & 2) { |
| 196 | unsigned long flags; |
| 197 | local_irq_save(flags); |
| 198 | ata_vlb_sync(drive, IDE_NSECTOR_REG); |
| 199 | hwif->INSL(IDE_DATA_REG, buffer, wcount); |
| 200 | local_irq_restore(flags); |
| 201 | } else |
| 202 | hwif->INSL(IDE_DATA_REG, buffer, wcount); |
| 203 | } else { |
| 204 | hwif->INSW(IDE_DATA_REG, buffer, wcount<<1); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | /* |
| 209 | * This is used for most PIO data transfers *to* the IDE interface |
| 210 | */ |
| 211 | static void ata_output_data(ide_drive_t *drive, void *buffer, u32 wcount) |
| 212 | { |
| 213 | ide_hwif_t *hwif = HWIF(drive); |
| 214 | u8 io_32bit = drive->io_32bit; |
| 215 | |
| 216 | if (io_32bit) { |
| 217 | if (io_32bit & 2) { |
| 218 | unsigned long flags; |
| 219 | local_irq_save(flags); |
| 220 | ata_vlb_sync(drive, IDE_NSECTOR_REG); |
| 221 | hwif->OUTSL(IDE_DATA_REG, buffer, wcount); |
| 222 | local_irq_restore(flags); |
| 223 | } else |
| 224 | hwif->OUTSL(IDE_DATA_REG, buffer, wcount); |
| 225 | } else { |
| 226 | hwif->OUTSW(IDE_DATA_REG, buffer, wcount<<1); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | /* |
| 231 | * The following routines are mainly used by the ATAPI drivers. |
| 232 | * |
| 233 | * These routines will round up any request for an odd number of bytes, |
| 234 | * so if an odd bytecount is specified, be sure that there's at least one |
| 235 | * extra byte allocated for the buffer. |
| 236 | */ |
| 237 | |
| 238 | static void atapi_input_bytes(ide_drive_t *drive, void *buffer, u32 bytecount) |
| 239 | { |
| 240 | ide_hwif_t *hwif = HWIF(drive); |
| 241 | |
| 242 | ++bytecount; |
| 243 | #if defined(CONFIG_ATARI) || defined(CONFIG_Q40) |
| 244 | if (MACH_IS_ATARI || MACH_IS_Q40) { |
| 245 | /* Atari has a byte-swapped IDE interface */ |
| 246 | insw_swapw(IDE_DATA_REG, buffer, bytecount / 2); |
| 247 | return; |
| 248 | } |
| 249 | #endif /* CONFIG_ATARI || CONFIG_Q40 */ |
| 250 | hwif->ata_input_data(drive, buffer, bytecount / 4); |
| 251 | if ((bytecount & 0x03) >= 2) |
| 252 | hwif->INSW(IDE_DATA_REG, ((u8 *)buffer)+(bytecount & ~0x03), 1); |
| 253 | } |
| 254 | |
| 255 | static void atapi_output_bytes(ide_drive_t *drive, void *buffer, u32 bytecount) |
| 256 | { |
| 257 | ide_hwif_t *hwif = HWIF(drive); |
| 258 | |
| 259 | ++bytecount; |
| 260 | #if defined(CONFIG_ATARI) || defined(CONFIG_Q40) |
| 261 | if (MACH_IS_ATARI || MACH_IS_Q40) { |
| 262 | /* Atari has a byte-swapped IDE interface */ |
| 263 | outsw_swapw(IDE_DATA_REG, buffer, bytecount / 2); |
| 264 | return; |
| 265 | } |
| 266 | #endif /* CONFIG_ATARI || CONFIG_Q40 */ |
| 267 | hwif->ata_output_data(drive, buffer, bytecount / 4); |
| 268 | if ((bytecount & 0x03) >= 2) |
| 269 | hwif->OUTSW(IDE_DATA_REG, ((u8*)buffer)+(bytecount & ~0x03), 1); |
| 270 | } |
| 271 | |
| 272 | void default_hwif_transport(ide_hwif_t *hwif) |
| 273 | { |
| 274 | hwif->ata_input_data = ata_input_data; |
| 275 | hwif->ata_output_data = ata_output_data; |
| 276 | hwif->atapi_input_bytes = atapi_input_bytes; |
| 277 | hwif->atapi_output_bytes = atapi_output_bytes; |
| 278 | } |
| 279 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | void ide_fix_driveid (struct hd_driveid *id) |
| 281 | { |
| 282 | #ifndef __LITTLE_ENDIAN |
| 283 | # ifdef __BIG_ENDIAN |
| 284 | int i; |
| 285 | u16 *stringcast; |
| 286 | |
| 287 | id->config = __le16_to_cpu(id->config); |
| 288 | id->cyls = __le16_to_cpu(id->cyls); |
| 289 | id->reserved2 = __le16_to_cpu(id->reserved2); |
| 290 | id->heads = __le16_to_cpu(id->heads); |
| 291 | id->track_bytes = __le16_to_cpu(id->track_bytes); |
| 292 | id->sector_bytes = __le16_to_cpu(id->sector_bytes); |
| 293 | id->sectors = __le16_to_cpu(id->sectors); |
| 294 | id->vendor0 = __le16_to_cpu(id->vendor0); |
| 295 | id->vendor1 = __le16_to_cpu(id->vendor1); |
| 296 | id->vendor2 = __le16_to_cpu(id->vendor2); |
| 297 | stringcast = (u16 *)&id->serial_no[0]; |
| 298 | for (i = 0; i < (20/2); i++) |
| 299 | stringcast[i] = __le16_to_cpu(stringcast[i]); |
| 300 | id->buf_type = __le16_to_cpu(id->buf_type); |
| 301 | id->buf_size = __le16_to_cpu(id->buf_size); |
| 302 | id->ecc_bytes = __le16_to_cpu(id->ecc_bytes); |
| 303 | stringcast = (u16 *)&id->fw_rev[0]; |
| 304 | for (i = 0; i < (8/2); i++) |
| 305 | stringcast[i] = __le16_to_cpu(stringcast[i]); |
| 306 | stringcast = (u16 *)&id->model[0]; |
| 307 | for (i = 0; i < (40/2); i++) |
| 308 | stringcast[i] = __le16_to_cpu(stringcast[i]); |
| 309 | id->dword_io = __le16_to_cpu(id->dword_io); |
| 310 | id->reserved50 = __le16_to_cpu(id->reserved50); |
| 311 | id->field_valid = __le16_to_cpu(id->field_valid); |
| 312 | id->cur_cyls = __le16_to_cpu(id->cur_cyls); |
| 313 | id->cur_heads = __le16_to_cpu(id->cur_heads); |
| 314 | id->cur_sectors = __le16_to_cpu(id->cur_sectors); |
| 315 | id->cur_capacity0 = __le16_to_cpu(id->cur_capacity0); |
| 316 | id->cur_capacity1 = __le16_to_cpu(id->cur_capacity1); |
| 317 | id->lba_capacity = __le32_to_cpu(id->lba_capacity); |
| 318 | id->dma_1word = __le16_to_cpu(id->dma_1word); |
| 319 | id->dma_mword = __le16_to_cpu(id->dma_mword); |
| 320 | id->eide_pio_modes = __le16_to_cpu(id->eide_pio_modes); |
| 321 | id->eide_dma_min = __le16_to_cpu(id->eide_dma_min); |
| 322 | id->eide_dma_time = __le16_to_cpu(id->eide_dma_time); |
| 323 | id->eide_pio = __le16_to_cpu(id->eide_pio); |
| 324 | id->eide_pio_iordy = __le16_to_cpu(id->eide_pio_iordy); |
| 325 | for (i = 0; i < 2; ++i) |
| 326 | id->words69_70[i] = __le16_to_cpu(id->words69_70[i]); |
| 327 | for (i = 0; i < 4; ++i) |
| 328 | id->words71_74[i] = __le16_to_cpu(id->words71_74[i]); |
| 329 | id->queue_depth = __le16_to_cpu(id->queue_depth); |
| 330 | for (i = 0; i < 4; ++i) |
| 331 | id->words76_79[i] = __le16_to_cpu(id->words76_79[i]); |
| 332 | id->major_rev_num = __le16_to_cpu(id->major_rev_num); |
| 333 | id->minor_rev_num = __le16_to_cpu(id->minor_rev_num); |
| 334 | id->command_set_1 = __le16_to_cpu(id->command_set_1); |
| 335 | id->command_set_2 = __le16_to_cpu(id->command_set_2); |
| 336 | id->cfsse = __le16_to_cpu(id->cfsse); |
| 337 | id->cfs_enable_1 = __le16_to_cpu(id->cfs_enable_1); |
| 338 | id->cfs_enable_2 = __le16_to_cpu(id->cfs_enable_2); |
| 339 | id->csf_default = __le16_to_cpu(id->csf_default); |
| 340 | id->dma_ultra = __le16_to_cpu(id->dma_ultra); |
| 341 | id->trseuc = __le16_to_cpu(id->trseuc); |
| 342 | id->trsEuc = __le16_to_cpu(id->trsEuc); |
| 343 | id->CurAPMvalues = __le16_to_cpu(id->CurAPMvalues); |
| 344 | id->mprc = __le16_to_cpu(id->mprc); |
| 345 | id->hw_config = __le16_to_cpu(id->hw_config); |
| 346 | id->acoustic = __le16_to_cpu(id->acoustic); |
| 347 | id->msrqs = __le16_to_cpu(id->msrqs); |
| 348 | id->sxfert = __le16_to_cpu(id->sxfert); |
| 349 | id->sal = __le16_to_cpu(id->sal); |
| 350 | id->spg = __le32_to_cpu(id->spg); |
| 351 | id->lba_capacity_2 = __le64_to_cpu(id->lba_capacity_2); |
| 352 | for (i = 0; i < 22; i++) |
| 353 | id->words104_125[i] = __le16_to_cpu(id->words104_125[i]); |
| 354 | id->last_lun = __le16_to_cpu(id->last_lun); |
| 355 | id->word127 = __le16_to_cpu(id->word127); |
| 356 | id->dlf = __le16_to_cpu(id->dlf); |
| 357 | id->csfo = __le16_to_cpu(id->csfo); |
| 358 | for (i = 0; i < 26; i++) |
| 359 | id->words130_155[i] = __le16_to_cpu(id->words130_155[i]); |
| 360 | id->word156 = __le16_to_cpu(id->word156); |
| 361 | for (i = 0; i < 3; i++) |
| 362 | id->words157_159[i] = __le16_to_cpu(id->words157_159[i]); |
| 363 | id->cfa_power = __le16_to_cpu(id->cfa_power); |
| 364 | for (i = 0; i < 14; i++) |
| 365 | id->words161_175[i] = __le16_to_cpu(id->words161_175[i]); |
| 366 | for (i = 0; i < 31; i++) |
| 367 | id->words176_205[i] = __le16_to_cpu(id->words176_205[i]); |
| 368 | for (i = 0; i < 48; i++) |
| 369 | id->words206_254[i] = __le16_to_cpu(id->words206_254[i]); |
| 370 | id->integrity_word = __le16_to_cpu(id->integrity_word); |
| 371 | # else |
| 372 | # error "Please fix <asm/byteorder.h>" |
| 373 | # endif |
| 374 | #endif |
| 375 | } |
| 376 | |
Bartlomiej Zolnierkiewicz | 0174511 | 2007-11-05 21:42:29 +0100 | [diff] [blame] | 377 | /* |
| 378 | * ide_fixstring() cleans up and (optionally) byte-swaps a text string, |
| 379 | * removing leading/trailing blanks and compressing internal blanks. |
| 380 | * It is primarily used to tidy up the model name/number fields as |
| 381 | * returned by the WIN_[P]IDENTIFY commands. |
| 382 | */ |
| 383 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | void ide_fixstring (u8 *s, const int bytecount, const int byteswap) |
| 385 | { |
| 386 | u8 *p = s, *end = &s[bytecount & ~1]; /* bytecount must be even */ |
| 387 | |
| 388 | if (byteswap) { |
| 389 | /* convert from big-endian to host byte order */ |
| 390 | for (p = end ; p != s;) { |
| 391 | unsigned short *pp = (unsigned short *) (p -= 2); |
| 392 | *pp = ntohs(*pp); |
| 393 | } |
| 394 | } |
| 395 | /* strip leading blanks */ |
| 396 | while (s != end && *s == ' ') |
| 397 | ++s; |
| 398 | /* compress internal blanks and strip trailing blanks */ |
| 399 | while (s != end && *s) { |
| 400 | if (*s++ != ' ' || (s != end && *s && *s != ' ')) |
| 401 | *p++ = *(s-1); |
| 402 | } |
| 403 | /* wipe out trailing garbage */ |
| 404 | while (p != end) |
| 405 | *p++ = '\0'; |
| 406 | } |
| 407 | |
| 408 | EXPORT_SYMBOL(ide_fixstring); |
| 409 | |
| 410 | /* |
| 411 | * Needed for PCI irq sharing |
| 412 | */ |
| 413 | int drive_is_ready (ide_drive_t *drive) |
| 414 | { |
| 415 | ide_hwif_t *hwif = HWIF(drive); |
| 416 | u8 stat = 0; |
| 417 | |
| 418 | if (drive->waiting_for_dma) |
| 419 | return hwif->ide_dma_test_irq(drive); |
| 420 | |
| 421 | #if 0 |
| 422 | /* need to guarantee 400ns since last command was issued */ |
| 423 | udelay(1); |
| 424 | #endif |
| 425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | /* |
| 427 | * We do a passive status test under shared PCI interrupts on |
| 428 | * cards that truly share the ATA side interrupt, but may also share |
| 429 | * an interrupt with another pci card/device. We make no assumptions |
| 430 | * about possible isa-pnp and pci-pnp issues yet. |
| 431 | */ |
| 432 | if (IDE_CONTROL_REG) |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 433 | stat = ide_read_altstatus(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | /* Note: this may clear a pending IRQ!! */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 436 | stat = ide_read_status(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
| 438 | if (stat & BUSY_STAT) |
| 439 | /* drive busy: definitely not interrupting */ |
| 440 | return 0; |
| 441 | |
| 442 | /* drive ready: *might* be interrupting */ |
| 443 | return 1; |
| 444 | } |
| 445 | |
| 446 | EXPORT_SYMBOL(drive_is_ready); |
| 447 | |
| 448 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | * This routine busy-waits for the drive status to be not "busy". |
| 450 | * It then checks the status for all of the "good" bits and none |
| 451 | * of the "bad" bits, and if all is okay it returns 0. All other |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 452 | * cases return error -- caller may then invoke ide_error(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | * |
| 454 | * This routine should get fixed to not hog the cpu during extra long waits.. |
| 455 | * That could be done by busy-waiting for the first jiffy or two, and then |
| 456 | * setting a timer to wake up at half second intervals thereafter, |
| 457 | * until timeout is achieved, before timing out. |
| 458 | */ |
Bartlomiej Zolnierkiewicz | aedea59 | 2007-10-13 17:47:50 +0200 | [diff] [blame] | 459 | static int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout, u8 *rstat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | unsigned long flags; |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 462 | int i; |
| 463 | u8 stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
| 465 | udelay(1); /* spec allows drive 400ns to assert "BUSY" */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 466 | stat = ide_read_status(drive); |
| 467 | |
| 468 | if (stat & BUSY_STAT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | local_irq_set(flags); |
| 470 | timeout += jiffies; |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 471 | while ((stat = ide_read_status(drive)) & BUSY_STAT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | if (time_after(jiffies, timeout)) { |
| 473 | /* |
| 474 | * One last read after the timeout in case |
| 475 | * heavy interrupt load made us not make any |
| 476 | * progress during the timeout.. |
| 477 | */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 478 | stat = ide_read_status(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | if (!(stat & BUSY_STAT)) |
| 480 | break; |
| 481 | |
| 482 | local_irq_restore(flags); |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 483 | *rstat = stat; |
| 484 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | } |
| 486 | } |
| 487 | local_irq_restore(flags); |
| 488 | } |
| 489 | /* |
| 490 | * Allow status to settle, then read it again. |
| 491 | * A few rare drives vastly violate the 400ns spec here, |
| 492 | * so we'll wait up to 10usec for a "good" status |
| 493 | * rather than expensively fail things immediately. |
| 494 | * This fix courtesy of Matthew Faupel & Niccolo Rigacci. |
| 495 | */ |
| 496 | for (i = 0; i < 10; i++) { |
| 497 | udelay(1); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 498 | stat = ide_read_status(drive); |
| 499 | |
| 500 | if (OK_STAT(stat, good, bad)) { |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 501 | *rstat = stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | return 0; |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 503 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | } |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 505 | *rstat = stat; |
| 506 | return -EFAULT; |
| 507 | } |
| 508 | |
| 509 | /* |
| 510 | * In case of error returns error value after doing "*startstop = ide_error()". |
| 511 | * The caller should return the updated value of "startstop" in this case, |
| 512 | * "startstop" is unchanged when the function returns 0. |
| 513 | */ |
| 514 | int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout) |
| 515 | { |
| 516 | int err; |
| 517 | u8 stat; |
| 518 | |
| 519 | /* bail early if we've exceeded max_failures */ |
| 520 | if (drive->max_failures && (drive->failures > drive->max_failures)) { |
| 521 | *startstop = ide_stopped; |
| 522 | return 1; |
| 523 | } |
| 524 | |
| 525 | err = __ide_wait_stat(drive, good, bad, timeout, &stat); |
| 526 | |
| 527 | if (err) { |
| 528 | char *s = (err == -EBUSY) ? "status timeout" : "status error"; |
| 529 | *startstop = ide_error(drive, s, stat); |
| 530 | } |
| 531 | |
| 532 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | } |
| 534 | |
| 535 | EXPORT_SYMBOL(ide_wait_stat); |
| 536 | |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 537 | /** |
| 538 | * ide_in_drive_list - look for drive in black/white list |
| 539 | * @id: drive identifier |
| 540 | * @drive_table: list to inspect |
| 541 | * |
| 542 | * Look for a drive in the blacklist and the whitelist tables |
| 543 | * Returns 1 if the drive is found in the table. |
| 544 | */ |
| 545 | |
| 546 | int ide_in_drive_list(struct hd_driveid *id, const struct drive_list_entry *drive_table) |
| 547 | { |
| 548 | for ( ; drive_table->id_model; drive_table++) |
| 549 | if ((!strcmp(drive_table->id_model, id->model)) && |
| 550 | (!drive_table->id_firmware || |
| 551 | strstr(id->fw_rev, drive_table->id_firmware))) |
| 552 | return 1; |
| 553 | return 0; |
| 554 | } |
| 555 | |
Bartlomiej Zolnierkiewicz | b0244a0 | 2007-08-20 22:42:57 +0200 | [diff] [blame] | 556 | EXPORT_SYMBOL_GPL(ide_in_drive_list); |
| 557 | |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 558 | /* |
| 559 | * Early UDMA66 devices don't set bit14 to 1, only bit13 is valid. |
| 560 | * We list them here and depend on the device side cable detection for them. |
Bartlomiej Zolnierkiewicz | 8588a2b | 2007-10-26 20:31:16 +0200 | [diff] [blame] | 561 | * |
| 562 | * Some optical devices with the buggy firmwares have the same problem. |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 563 | */ |
| 564 | static const struct drive_list_entry ivb_list[] = { |
| 565 | { "QUANTUM FIREBALLlct10 05" , "A03.0900" }, |
Bartlomiej Zolnierkiewicz | 8588a2b | 2007-10-26 20:31:16 +0200 | [diff] [blame] | 566 | { "TSSTcorp CDDVDW SH-S202J" , "SB00" }, |
Peter Missel | e97564f | 2007-11-27 21:35:57 +0100 | [diff] [blame] | 567 | { "TSSTcorp CDDVDW SH-S202J" , "SB01" }, |
| 568 | { "TSSTcorp CDDVDW SH-S202N" , "SB00" }, |
| 569 | { "TSSTcorp CDDVDW SH-S202N" , "SB01" }, |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 570 | { NULL , NULL } |
| 571 | }; |
| 572 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | /* |
| 574 | * All hosts that use the 80c ribbon must use! |
| 575 | * The name is derived from upper byte of word 93 and the 80c ribbon. |
| 576 | */ |
| 577 | u8 eighty_ninty_three (ide_drive_t *drive) |
| 578 | { |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 579 | ide_hwif_t *hwif = drive->hwif; |
| 580 | struct hd_driveid *id = drive->id; |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 581 | int ivb = ide_in_drive_list(id, ivb_list); |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 582 | |
Bartlomiej Zolnierkiewicz | 49521f9 | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 583 | if (hwif->cbl == ATA_CBL_PATA40_SHORT) |
| 584 | return 1; |
| 585 | |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 586 | if (ivb) |
| 587 | printk(KERN_DEBUG "%s: skipping word 93 validity check\n", |
| 588 | drive->name); |
| 589 | |
George Kibardin | b98f880 | 2008-01-10 23:03:42 +0100 | [diff] [blame] | 590 | if (ide_dev_is_sata(id) && !ivb) |
| 591 | return 1; |
| 592 | |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 593 | if (hwif->cbl != ATA_CBL_PATA80 && !ivb) |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 594 | goto no_80w; |
Alan Cox | 1a1276e | 2006-06-28 04:26:58 -0700 | [diff] [blame] | 595 | |
Bartlomiej Zolnierkiewicz | f68d932 | 2007-03-26 23:03:18 +0200 | [diff] [blame] | 596 | /* |
| 597 | * FIXME: |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 598 | * - force bit13 (80c cable present) check also for !ivb devices |
Bartlomiej Zolnierkiewicz | f68d932 | 2007-03-26 23:03:18 +0200 | [diff] [blame] | 599 | * (unless the slave device is pre-ATA3) |
| 600 | */ |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 601 | if ((id->hw_config & 0x4000) || (ivb && (id->hw_config & 0x2000))) |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 602 | return 1; |
| 603 | |
| 604 | no_80w: |
| 605 | if (drive->udma33_warned == 1) |
| 606 | return 0; |
| 607 | |
| 608 | printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, " |
| 609 | "limiting max speed to UDMA33\n", |
Bartlomiej Zolnierkiewicz | 49521f9 | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 610 | drive->name, |
| 611 | hwif->cbl == ATA_CBL_PATA80 ? "drive" : "host"); |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 612 | |
| 613 | drive->udma33_warned = 1; |
| 614 | |
| 615 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | } |
| 617 | |
Bartlomiej Zolnierkiewicz | 8a45513 | 2007-10-20 00:32:36 +0200 | [diff] [blame] | 618 | int ide_driveid_update(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | { |
Bartlomiej Zolnierkiewicz | 8a45513 | 2007-10-20 00:32:36 +0200 | [diff] [blame] | 620 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | struct hd_driveid *id; |
Bartlomiej Zolnierkiewicz | 8a45513 | 2007-10-20 00:32:36 +0200 | [diff] [blame] | 622 | unsigned long timeout, flags; |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 623 | u8 stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | /* |
| 626 | * Re-read drive->id for possible DMA mode |
| 627 | * change (copied from ide-probe.c) |
| 628 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
| 630 | SELECT_MASK(drive, 1); |
Bartlomiej Zolnierkiewicz | 81ca691 | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 631 | ide_set_irq(drive, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | msleep(50); |
| 633 | hwif->OUTB(WIN_IDENTIFY, IDE_COMMAND_REG); |
| 634 | timeout = jiffies + WAIT_WORSTCASE; |
| 635 | do { |
| 636 | if (time_after(jiffies, timeout)) { |
| 637 | SELECT_MASK(drive, 0); |
| 638 | return 0; /* drive timed-out */ |
| 639 | } |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | msleep(50); /* give drive a breather */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 642 | stat = ide_read_altstatus(drive); |
| 643 | } while (stat & BUSY_STAT); |
| 644 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | msleep(50); /* wait for IRQ and DRQ_STAT */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 646 | stat = ide_read_status(drive); |
| 647 | |
| 648 | if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | SELECT_MASK(drive, 0); |
| 650 | printk("%s: CHECK for good STATUS\n", drive->name); |
| 651 | return 0; |
| 652 | } |
| 653 | local_irq_save(flags); |
| 654 | SELECT_MASK(drive, 0); |
| 655 | id = kmalloc(SECTOR_WORDS*4, GFP_ATOMIC); |
| 656 | if (!id) { |
| 657 | local_irq_restore(flags); |
| 658 | return 0; |
| 659 | } |
| 660 | ata_input_data(drive, id, SECTOR_WORDS); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 661 | (void)ide_read_status(drive); /* clear drive IRQ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | local_irq_enable(); |
| 663 | local_irq_restore(flags); |
| 664 | ide_fix_driveid(id); |
| 665 | if (id) { |
| 666 | drive->id->dma_ultra = id->dma_ultra; |
| 667 | drive->id->dma_mword = id->dma_mword; |
| 668 | drive->id->dma_1word = id->dma_1word; |
| 669 | /* anything more ? */ |
| 670 | kfree(id); |
Bartlomiej Zolnierkiewicz | 3ab7efe | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 671 | |
| 672 | if (drive->using_dma && ide_id_dma_bug(drive)) |
| 673 | ide_dma_off(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | } |
| 675 | |
| 676 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | } |
| 678 | |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 679 | int ide_config_drive_speed(ide_drive_t *drive, u8 speed) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | { |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 681 | ide_hwif_t *hwif = drive->hwif; |
Sergei Shtylyov | 89613e6 | 2007-11-27 21:35:52 +0100 | [diff] [blame] | 682 | int error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | u8 stat; |
| 684 | |
| 685 | // while (HWGROUP(drive)->busy) |
| 686 | // msleep(50); |
| 687 | |
| 688 | #ifdef CONFIG_BLK_DEV_IDEDMA |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 689 | if (hwif->dma_host_set) /* check if host supports DMA */ |
| 690 | hwif->dma_host_set(drive, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | #endif |
| 692 | |
Sergei Shtylyov | 89613e6 | 2007-11-27 21:35:52 +0100 | [diff] [blame] | 693 | /* Skip setting PIO flow-control modes on pre-EIDE drives */ |
| 694 | if ((speed & 0xf8) == XFER_PIO_0 && !(drive->id->capability & 0x08)) |
| 695 | goto skip; |
| 696 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | /* |
| 698 | * Don't use ide_wait_cmd here - it will |
| 699 | * attempt to set_geometry and recalibrate, |
| 700 | * but for some reason these don't work at |
| 701 | * this point (lost interrupt). |
| 702 | */ |
| 703 | /* |
| 704 | * Select the drive, and issue the SETFEATURES command |
| 705 | */ |
| 706 | disable_irq_nosync(hwif->irq); |
| 707 | |
| 708 | /* |
| 709 | * FIXME: we race against the running IRQ here if |
| 710 | * this is called from non IRQ context. If we use |
| 711 | * disable_irq() we hang on the error path. Work |
| 712 | * is needed. |
| 713 | */ |
| 714 | |
| 715 | udelay(1); |
| 716 | SELECT_DRIVE(drive); |
| 717 | SELECT_MASK(drive, 0); |
| 718 | udelay(1); |
Bartlomiej Zolnierkiewicz | 81ca691 | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 719 | ide_set_irq(drive, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | hwif->OUTB(speed, IDE_NSECTOR_REG); |
| 721 | hwif->OUTB(SETFEATURES_XFER, IDE_FEATURE_REG); |
Bartlomiej Zolnierkiewicz | adcd33d | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 722 | hwif->OUTBSYNC(drive, WIN_SETFEATURES, IDE_COMMAND_REG); |
Bartlomiej Zolnierkiewicz | 81ca691 | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 723 | if (drive->quirk_list == 2) |
| 724 | ide_set_irq(drive, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 726 | error = __ide_wait_stat(drive, drive->ready_stat, |
| 727 | BUSY_STAT|DRQ_STAT|ERR_STAT, |
| 728 | WAIT_CMD, &stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | |
| 730 | SELECT_MASK(drive, 0); |
| 731 | |
| 732 | enable_irq(hwif->irq); |
| 733 | |
| 734 | if (error) { |
| 735 | (void) ide_dump_status(drive, "set_drive_speed_status", stat); |
| 736 | return error; |
| 737 | } |
| 738 | |
| 739 | drive->id->dma_ultra &= ~0xFF00; |
| 740 | drive->id->dma_mword &= ~0x0F00; |
| 741 | drive->id->dma_1word &= ~0x0F00; |
| 742 | |
Sergei Shtylyov | 89613e6 | 2007-11-27 21:35:52 +0100 | [diff] [blame] | 743 | skip: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | #ifdef CONFIG_BLK_DEV_IDEDMA |
Bartlomiej Zolnierkiewicz | f37aaf9 | 2008-01-26 20:13:02 +0100 | [diff] [blame] | 745 | if ((speed >= XFER_SW_DMA_0 || (hwif->host_flags & IDE_HFLAG_VDMA)) && |
| 746 | drive->using_dma) |
Bartlomiej Zolnierkiewicz | 15ce926 | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 747 | hwif->dma_host_set(drive, 1); |
| 748 | else if (hwif->dma_host_set) /* check if host supports DMA */ |
Bartlomiej Zolnierkiewicz | 4a546e0 | 2008-01-26 20:13:01 +0100 | [diff] [blame] | 749 | ide_dma_off_quietly(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | #endif |
| 751 | |
| 752 | switch(speed) { |
| 753 | case XFER_UDMA_7: drive->id->dma_ultra |= 0x8080; break; |
| 754 | case XFER_UDMA_6: drive->id->dma_ultra |= 0x4040; break; |
| 755 | case XFER_UDMA_5: drive->id->dma_ultra |= 0x2020; break; |
| 756 | case XFER_UDMA_4: drive->id->dma_ultra |= 0x1010; break; |
| 757 | case XFER_UDMA_3: drive->id->dma_ultra |= 0x0808; break; |
| 758 | case XFER_UDMA_2: drive->id->dma_ultra |= 0x0404; break; |
| 759 | case XFER_UDMA_1: drive->id->dma_ultra |= 0x0202; break; |
| 760 | case XFER_UDMA_0: drive->id->dma_ultra |= 0x0101; break; |
| 761 | case XFER_MW_DMA_2: drive->id->dma_mword |= 0x0404; break; |
| 762 | case XFER_MW_DMA_1: drive->id->dma_mword |= 0x0202; break; |
| 763 | case XFER_MW_DMA_0: drive->id->dma_mword |= 0x0101; break; |
| 764 | case XFER_SW_DMA_2: drive->id->dma_1word |= 0x0404; break; |
| 765 | case XFER_SW_DMA_1: drive->id->dma_1word |= 0x0202; break; |
| 766 | case XFER_SW_DMA_0: drive->id->dma_1word |= 0x0101; break; |
| 767 | default: break; |
| 768 | } |
| 769 | if (!drive->init_speed) |
| 770 | drive->init_speed = speed; |
| 771 | drive->current_speed = speed; |
| 772 | return error; |
| 773 | } |
| 774 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | /* |
| 776 | * This should get invoked any time we exit the driver to |
| 777 | * wait for an interrupt response from a drive. handler() points |
| 778 | * at the appropriate code to handle the next interrupt, and a |
| 779 | * timer is started to prevent us from waiting forever in case |
| 780 | * something goes wrong (see the ide_timer_expiry() handler later on). |
| 781 | * |
| 782 | * See also ide_execute_command |
| 783 | */ |
| 784 | static void __ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, |
| 785 | unsigned int timeout, ide_expiry_t *expiry) |
| 786 | { |
| 787 | ide_hwgroup_t *hwgroup = HWGROUP(drive); |
| 788 | |
| 789 | if (hwgroup->handler != NULL) { |
| 790 | printk(KERN_CRIT "%s: ide_set_handler: handler not null; " |
| 791 | "old=%p, new=%p\n", |
| 792 | drive->name, hwgroup->handler, handler); |
| 793 | } |
| 794 | hwgroup->handler = handler; |
| 795 | hwgroup->expiry = expiry; |
| 796 | hwgroup->timer.expires = jiffies + timeout; |
Suleiman Souhlal | 2345031 | 2007-04-10 22:38:37 +0200 | [diff] [blame] | 797 | hwgroup->req_gen_timer = hwgroup->req_gen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | add_timer(&hwgroup->timer); |
| 799 | } |
| 800 | |
| 801 | void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, |
| 802 | unsigned int timeout, ide_expiry_t *expiry) |
| 803 | { |
| 804 | unsigned long flags; |
| 805 | spin_lock_irqsave(&ide_lock, flags); |
| 806 | __ide_set_handler(drive, handler, timeout, expiry); |
| 807 | spin_unlock_irqrestore(&ide_lock, flags); |
| 808 | } |
| 809 | |
| 810 | EXPORT_SYMBOL(ide_set_handler); |
| 811 | |
| 812 | /** |
| 813 | * ide_execute_command - execute an IDE command |
| 814 | * @drive: IDE drive to issue the command against |
| 815 | * @command: command byte to write |
| 816 | * @handler: handler for next phase |
| 817 | * @timeout: timeout for command |
| 818 | * @expiry: handler to run on timeout |
| 819 | * |
| 820 | * Helper function to issue an IDE command. This handles the |
| 821 | * atomicity requirements, command timing and ensures that the |
| 822 | * handler and IRQ setup do not race. All IDE command kick off |
| 823 | * should go via this function or do equivalent locking. |
| 824 | */ |
Bartlomiej Zolnierkiewicz | cd2a2d9 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 825 | |
| 826 | void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler, |
| 827 | unsigned timeout, ide_expiry_t *expiry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | { |
| 829 | unsigned long flags; |
| 830 | ide_hwgroup_t *hwgroup = HWGROUP(drive); |
| 831 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 629f944 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 832 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | spin_lock_irqsave(&ide_lock, flags); |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 834 | BUG_ON(hwgroup->handler); |
Bartlomiej Zolnierkiewicz | 629f944 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 835 | __ide_set_handler(drive, handler, timeout, expiry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | hwif->OUTBSYNC(drive, cmd, IDE_COMMAND_REG); |
Bartlomiej Zolnierkiewicz | 629f944 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 837 | /* |
| 838 | * Drive takes 400nS to respond, we must avoid the IRQ being |
| 839 | * serviced before that. |
| 840 | * |
| 841 | * FIXME: we could skip this delay with care on non shared devices |
| 842 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | ndelay(400); |
| 844 | spin_unlock_irqrestore(&ide_lock, flags); |
| 845 | } |
| 846 | |
| 847 | EXPORT_SYMBOL(ide_execute_command); |
| 848 | |
| 849 | |
| 850 | /* needed below */ |
| 851 | static ide_startstop_t do_reset1 (ide_drive_t *, int); |
| 852 | |
| 853 | /* |
| 854 | * atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms |
| 855 | * during an atapi drive reset operation. If the drive has not yet responded, |
| 856 | * and we have not yet hit our maximum waiting time, then the timer is restarted |
| 857 | * for another 50ms. |
| 858 | */ |
| 859 | static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive) |
| 860 | { |
| 861 | ide_hwgroup_t *hwgroup = HWGROUP(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | u8 stat; |
| 863 | |
| 864 | SELECT_DRIVE(drive); |
| 865 | udelay (10); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 866 | stat = ide_read_status(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 868 | if (OK_STAT(stat, 0, BUSY_STAT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | printk("%s: ATAPI reset complete\n", drive->name); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 870 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | if (time_before(jiffies, hwgroup->poll_timeout)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); |
| 873 | /* continue polling */ |
| 874 | return ide_started; |
| 875 | } |
| 876 | /* end of polling */ |
| 877 | hwgroup->polling = 0; |
| 878 | printk("%s: ATAPI reset timed-out, status=0x%02x\n", |
| 879 | drive->name, stat); |
| 880 | /* do it the old fashioned way */ |
| 881 | return do_reset1(drive, 1); |
| 882 | } |
| 883 | /* done polling */ |
| 884 | hwgroup->polling = 0; |
Alan Cox | 913759a | 2006-10-03 01:14:33 -0700 | [diff] [blame] | 885 | hwgroup->resetting = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | return ide_stopped; |
| 887 | } |
| 888 | |
| 889 | /* |
| 890 | * reset_pollfunc() gets invoked to poll the interface for completion every 50ms |
| 891 | * during an ide reset operation. If the drives have not yet responded, |
| 892 | * and we have not yet hit our maximum waiting time, then the timer is restarted |
| 893 | * for another 50ms. |
| 894 | */ |
| 895 | static ide_startstop_t reset_pollfunc (ide_drive_t *drive) |
| 896 | { |
| 897 | ide_hwgroup_t *hwgroup = HWGROUP(drive); |
| 898 | ide_hwif_t *hwif = HWIF(drive); |
| 899 | u8 tmp; |
| 900 | |
| 901 | if (hwif->reset_poll != NULL) { |
| 902 | if (hwif->reset_poll(drive)) { |
| 903 | printk(KERN_ERR "%s: host reset_poll failure for %s.\n", |
| 904 | hwif->name, drive->name); |
| 905 | return ide_stopped; |
| 906 | } |
| 907 | } |
| 908 | |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame^] | 909 | tmp = ide_read_status(drive); |
| 910 | |
| 911 | if (!OK_STAT(tmp, 0, BUSY_STAT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | if (time_before(jiffies, hwgroup->poll_timeout)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); |
| 914 | /* continue polling */ |
| 915 | return ide_started; |
| 916 | } |
| 917 | printk("%s: reset timed-out, status=0x%02x\n", hwif->name, tmp); |
| 918 | drive->failures++; |
| 919 | } else { |
| 920 | printk("%s: reset: ", hwif->name); |
| 921 | if ((tmp = hwif->INB(IDE_ERROR_REG)) == 1) { |
| 922 | printk("success\n"); |
| 923 | drive->failures = 0; |
| 924 | } else { |
| 925 | drive->failures++; |
| 926 | printk("master: "); |
| 927 | switch (tmp & 0x7f) { |
| 928 | case 1: printk("passed"); |
| 929 | break; |
| 930 | case 2: printk("formatter device error"); |
| 931 | break; |
| 932 | case 3: printk("sector buffer error"); |
| 933 | break; |
| 934 | case 4: printk("ECC circuitry error"); |
| 935 | break; |
| 936 | case 5: printk("controlling MPU error"); |
| 937 | break; |
| 938 | default:printk("error (0x%02x?)", tmp); |
| 939 | } |
| 940 | if (tmp & 0x80) |
| 941 | printk("; slave: failed"); |
| 942 | printk("\n"); |
| 943 | } |
| 944 | } |
| 945 | hwgroup->polling = 0; /* done polling */ |
Alan Cox | 913759a | 2006-10-03 01:14:33 -0700 | [diff] [blame] | 946 | hwgroup->resetting = 0; /* done reset attempt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | return ide_stopped; |
| 948 | } |
| 949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | static void ide_disk_pre_reset(ide_drive_t *drive) |
| 951 | { |
| 952 | int legacy = (drive->id->cfs_enable_2 & 0x0400) ? 0 : 1; |
| 953 | |
| 954 | drive->special.all = 0; |
| 955 | drive->special.b.set_geometry = legacy; |
| 956 | drive->special.b.recalibrate = legacy; |
Bartlomiej Zolnierkiewicz | 4ee06b7 | 2008-01-25 22:17:08 +0100 | [diff] [blame] | 957 | drive->mult_count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | if (!drive->keep_settings && !drive->using_dma) |
| 959 | drive->mult_req = 0; |
| 960 | if (drive->mult_req != drive->mult_count) |
| 961 | drive->special.b.set_multmode = 1; |
| 962 | } |
| 963 | |
| 964 | static void pre_reset(ide_drive_t *drive) |
| 965 | { |
| 966 | if (drive->media == ide_disk) |
| 967 | ide_disk_pre_reset(drive); |
| 968 | else |
| 969 | drive->post_reset = 1; |
| 970 | |
Bartlomiej Zolnierkiewicz | 99ffbe0 | 2008-02-02 19:56:47 +0100 | [diff] [blame] | 971 | if (drive->using_dma) { |
| 972 | if (drive->crc_count) |
Bartlomiej Zolnierkiewicz | 578cfa0 | 2008-02-02 19:56:47 +0100 | [diff] [blame] | 973 | ide_check_dma_crc(drive); |
Bartlomiej Zolnierkiewicz | 99ffbe0 | 2008-02-02 19:56:47 +0100 | [diff] [blame] | 974 | else |
| 975 | ide_dma_off(drive); |
| 976 | } |
| 977 | |
| 978 | if (!drive->keep_settings) { |
| 979 | if (!drive->using_dma) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | drive->unmask = 0; |
| 981 | drive->io_32bit = 0; |
| 982 | } |
| 983 | return; |
| 984 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | |
| 986 | if (HWIF(drive)->pre_reset != NULL) |
| 987 | HWIF(drive)->pre_reset(drive); |
| 988 | |
Suleiman Souhlal | 513daad | 2007-03-26 23:03:20 +0200 | [diff] [blame] | 989 | if (drive->current_speed != 0xff) |
| 990 | drive->desired_speed = drive->current_speed; |
| 991 | drive->current_speed = 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | } |
| 993 | |
| 994 | /* |
| 995 | * do_reset1() attempts to recover a confused drive by resetting it. |
| 996 | * Unfortunately, resetting a disk drive actually resets all devices on |
| 997 | * the same interface, so it can really be thought of as resetting the |
| 998 | * interface rather than resetting the drive. |
| 999 | * |
| 1000 | * ATAPI devices have their own reset mechanism which allows them to be |
| 1001 | * individually reset without clobbering other devices on the same interface. |
| 1002 | * |
| 1003 | * Unfortunately, the IDE interface does not generate an interrupt to let |
| 1004 | * us know when the reset operation has finished, so we must poll for this. |
| 1005 | * Equally poor, though, is the fact that this may a very long time to complete, |
| 1006 | * (up to 30 seconds worstcase). So, instead of busy-waiting here for it, |
| 1007 | * we set a timer to poll at 50ms intervals. |
| 1008 | */ |
| 1009 | static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) |
| 1010 | { |
| 1011 | unsigned int unit; |
| 1012 | unsigned long flags; |
| 1013 | ide_hwif_t *hwif; |
| 1014 | ide_hwgroup_t *hwgroup; |
| 1015 | |
| 1016 | spin_lock_irqsave(&ide_lock, flags); |
| 1017 | hwif = HWIF(drive); |
| 1018 | hwgroup = HWGROUP(drive); |
| 1019 | |
| 1020 | /* We must not reset with running handlers */ |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 1021 | BUG_ON(hwgroup->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | |
| 1023 | /* For an ATAPI device, first try an ATAPI SRST. */ |
| 1024 | if (drive->media != ide_disk && !do_not_try_atapi) { |
Alan Cox | 913759a | 2006-10-03 01:14:33 -0700 | [diff] [blame] | 1025 | hwgroup->resetting = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | pre_reset(drive); |
| 1027 | SELECT_DRIVE(drive); |
| 1028 | udelay (20); |
Alan Cox | 68ad991 | 2005-06-27 15:24:25 -0700 | [diff] [blame] | 1029 | hwif->OUTBSYNC(drive, WIN_SRST, IDE_COMMAND_REG); |
| 1030 | ndelay(400); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE; |
| 1032 | hwgroup->polling = 1; |
| 1033 | __ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); |
| 1034 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1035 | return ide_started; |
| 1036 | } |
| 1037 | |
| 1038 | /* |
| 1039 | * First, reset any device state data we were maintaining |
| 1040 | * for any of the drives on this interface. |
| 1041 | */ |
| 1042 | for (unit = 0; unit < MAX_DRIVES; ++unit) |
| 1043 | pre_reset(&hwif->drives[unit]); |
| 1044 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | if (!IDE_CONTROL_REG) { |
| 1046 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1047 | return ide_stopped; |
| 1048 | } |
| 1049 | |
Alan Cox | 913759a | 2006-10-03 01:14:33 -0700 | [diff] [blame] | 1050 | hwgroup->resetting = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | /* |
| 1052 | * Note that we also set nIEN while resetting the device, |
| 1053 | * to mask unwanted interrupts from the interface during the reset. |
| 1054 | * However, due to the design of PC hardware, this will cause an |
| 1055 | * immediate interrupt due to the edge transition it produces. |
| 1056 | * This single interrupt gives us a "fast poll" for drives that |
| 1057 | * recover from reset very quickly, saving us the first 50ms wait time. |
| 1058 | */ |
| 1059 | /* set SRST and nIEN */ |
| 1060 | hwif->OUTBSYNC(drive, drive->ctl|6,IDE_CONTROL_REG); |
| 1061 | /* more than enough time */ |
| 1062 | udelay(10); |
| 1063 | if (drive->quirk_list == 2) { |
| 1064 | /* clear SRST and nIEN */ |
| 1065 | hwif->OUTBSYNC(drive, drive->ctl, IDE_CONTROL_REG); |
| 1066 | } else { |
| 1067 | /* clear SRST, leave nIEN */ |
| 1068 | hwif->OUTBSYNC(drive, drive->ctl|2, IDE_CONTROL_REG); |
| 1069 | } |
| 1070 | /* more than enough time */ |
| 1071 | udelay(10); |
| 1072 | hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE; |
| 1073 | hwgroup->polling = 1; |
| 1074 | __ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); |
| 1075 | |
| 1076 | /* |
| 1077 | * Some weird controller like resetting themselves to a strange |
| 1078 | * state when the disks are reset this way. At least, the Winbond |
| 1079 | * 553 documentation says that |
| 1080 | */ |
Bartlomiej Zolnierkiewicz | 4ee06b7 | 2008-01-25 22:17:08 +0100 | [diff] [blame] | 1081 | if (hwif->resetproc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | hwif->resetproc(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | |
| 1084 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1085 | return ide_started; |
| 1086 | } |
| 1087 | |
| 1088 | /* |
| 1089 | * ide_do_reset() is the entry point to the drive/interface reset code. |
| 1090 | */ |
| 1091 | |
| 1092 | ide_startstop_t ide_do_reset (ide_drive_t *drive) |
| 1093 | { |
| 1094 | return do_reset1(drive, 0); |
| 1095 | } |
| 1096 | |
| 1097 | EXPORT_SYMBOL(ide_do_reset); |
| 1098 | |
| 1099 | /* |
| 1100 | * ide_wait_not_busy() waits for the currently selected device on the hwif |
Bartlomiej Zolnierkiewicz | 9d50152 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1101 | * to report a non-busy status, see comments in ide_probe_port(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | */ |
| 1103 | int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout) |
| 1104 | { |
| 1105 | u8 stat = 0; |
| 1106 | |
| 1107 | while(timeout--) { |
| 1108 | /* |
| 1109 | * Turn this into a schedule() sleep once I'm sure |
| 1110 | * about locking issues (2.5 work ?). |
| 1111 | */ |
| 1112 | mdelay(1); |
| 1113 | stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]); |
| 1114 | if ((stat & BUSY_STAT) == 0) |
| 1115 | return 0; |
| 1116 | /* |
| 1117 | * Assume a value of 0xff means nothing is connected to |
| 1118 | * the interface and it doesn't implement the pull-down |
| 1119 | * resistor on D7. |
| 1120 | */ |
| 1121 | if (stat == 0xff) |
| 1122 | return -ENODEV; |
Ingo Molnar | 6842f8c | 2006-02-03 03:04:55 -0800 | [diff] [blame] | 1123 | touch_softlockup_watchdog(); |
Michal Schmidt | 1e86240 | 2006-07-30 03:03:29 -0700 | [diff] [blame] | 1124 | touch_nmi_watchdog(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | } |
| 1126 | return -EBUSY; |
| 1127 | } |
| 1128 | |
| 1129 | EXPORT_SYMBOL_GPL(ide_wait_not_busy); |
| 1130 | |