Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/module.h> |
| 2 | #include <linux/types.h> |
| 3 | #include <linux/string.h> |
| 4 | #include <linux/kernel.h> |
| 5 | #include <linux/timer.h> |
| 6 | #include <linux/mm.h> |
| 7 | #include <linux/interrupt.h> |
| 8 | #include <linux/major.h> |
| 9 | #include <linux/errno.h> |
| 10 | #include <linux/genhd.h> |
| 11 | #include <linux/blkpg.h> |
| 12 | #include <linux/slab.h> |
| 13 | #include <linux/pci.h> |
| 14 | #include <linux/delay.h> |
| 15 | #include <linux/hdreg.h> |
| 16 | #include <linux/ide.h> |
| 17 | #include <linux/bitops.h> |
| 18 | |
| 19 | #include <asm/byteorder.h> |
| 20 | #include <asm/irq.h> |
| 21 | #include <asm/uaccess.h> |
| 22 | #include <asm/io.h> |
| 23 | |
| 24 | /* |
| 25 | * IDE library routines. These are plug in code that most |
| 26 | * drivers can use but occasionally may be weird enough |
| 27 | * to want to do their own thing with |
| 28 | * |
| 29 | * Add common non I/O op stuff here. Make sure it has proper |
| 30 | * kernel-doc function headers or your patch will be rejected |
| 31 | */ |
Bartlomiej Zolnierkiewicz | 3ab7efe | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 32 | |
| 33 | static const char *udma_str[] = |
| 34 | { "UDMA/16", "UDMA/25", "UDMA/33", "UDMA/44", |
| 35 | "UDMA/66", "UDMA/100", "UDMA/133", "UDMA7" }; |
| 36 | static const char *mwdma_str[] = |
| 37 | { "MWDMA0", "MWDMA1", "MWDMA2" }; |
| 38 | static const char *swdma_str[] = |
| 39 | { "SWDMA0", "SWDMA1", "SWDMA2" }; |
| 40 | static const char *pio_str[] = |
| 41 | { "PIO0", "PIO1", "PIO2", "PIO3", "PIO4", "PIO5" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | /** |
| 44 | * ide_xfer_verbose - return IDE mode names |
Bartlomiej Zolnierkiewicz | 3ab7efe | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 45 | * @mode: transfer mode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | * |
| 47 | * Returns a constant string giving the name of the mode |
| 48 | * requested. |
| 49 | */ |
| 50 | |
Bartlomiej Zolnierkiewicz | 3ab7efe | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 51 | const char *ide_xfer_verbose(u8 mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | { |
Bartlomiej Zolnierkiewicz | 3ab7efe | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 53 | const char *s; |
| 54 | u8 i = mode & 0xf; |
| 55 | |
| 56 | if (mode >= XFER_UDMA_0 && mode <= XFER_UDMA_7) |
| 57 | s = udma_str[i]; |
| 58 | else if (mode >= XFER_MW_DMA_0 && mode <= XFER_MW_DMA_2) |
| 59 | s = mwdma_str[i]; |
| 60 | else if (mode >= XFER_SW_DMA_0 && mode <= XFER_SW_DMA_2) |
| 61 | s = swdma_str[i]; |
| 62 | else if (mode >= XFER_PIO_0 && mode <= XFER_PIO_5) |
| 63 | s = pio_str[i & 0x7]; |
| 64 | else if (mode == XFER_PIO_SLOW) |
| 65 | s = "PIO SLOW"; |
| 66 | else |
| 67 | s = "XFER ERROR"; |
| 68 | |
| 69 | return s; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | EXPORT_SYMBOL(ide_xfer_verbose); |
| 73 | |
| 74 | /** |
Bartlomiej Zolnierkiewicz | 2d5eaa6 | 2007-05-10 00:01:08 +0200 | [diff] [blame] | 75 | * ide_rate_filter - filter transfer mode |
| 76 | * @drive: IDE device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | * @speed: desired speed |
| 78 | * |
Bartlomiej Zolnierkiewicz | 2d5eaa6 | 2007-05-10 00:01:08 +0200 | [diff] [blame] | 79 | * Given the available transfer modes this function returns |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | * the best available speed at or below the speed requested. |
Bartlomiej Zolnierkiewicz | 2d5eaa6 | 2007-05-10 00:01:08 +0200 | [diff] [blame] | 81 | * |
Bartlomiej Zolnierkiewicz | 7670df73 | 2007-10-11 23:53:59 +0200 | [diff] [blame] | 82 | * TODO: check device PIO capabilities |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | */ |
| 84 | |
Bartlomiej Zolnierkiewicz | f212ff2 | 2007-10-11 23:53:59 +0200 | [diff] [blame] | 85 | static u8 ide_rate_filter(ide_drive_t *drive, u8 speed) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | { |
Bartlomiej Zolnierkiewicz | 2d5eaa6 | 2007-05-10 00:01:08 +0200 | [diff] [blame] | 87 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 7670df73 | 2007-10-11 23:53:59 +0200 | [diff] [blame] | 88 | u8 mode = ide_find_dma_mode(drive, speed); |
Bartlomiej Zolnierkiewicz | 2d5eaa6 | 2007-05-10 00:01:08 +0200 | [diff] [blame] | 89 | |
Bartlomiej Zolnierkiewicz | 7670df73 | 2007-10-11 23:53:59 +0200 | [diff] [blame] | 90 | if (mode == 0) { |
| 91 | if (hwif->pio_mask) |
| 92 | mode = fls(hwif->pio_mask) - 1 + XFER_PIO_0; |
| 93 | else |
| 94 | mode = XFER_PIO_4; |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 95 | } |
Bartlomiej Zolnierkiewicz | 2d5eaa6 | 2007-05-10 00:01:08 +0200 | [diff] [blame] | 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | // printk("%s: mode 0x%02x, speed 0x%02x\n", __FUNCTION__, mode, speed); |
| 98 | |
Bartlomiej Zolnierkiewicz | 2d5eaa6 | 2007-05-10 00:01:08 +0200 | [diff] [blame] | 99 | return min(speed, mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | /* |
| 103 | * Standard (generic) timings for PIO modes, from ATA2 specification. |
| 104 | * These timings are for access to the IDE data port register *only*. |
| 105 | * Some drives may specify a mode, while also specifying a different |
| 106 | * value for cycle_time (from drive identification data). |
| 107 | */ |
| 108 | const ide_pio_timings_t ide_pio_timings[6] = { |
| 109 | { 70, 165, 600 }, /* PIO Mode 0 */ |
| 110 | { 50, 125, 383 }, /* PIO Mode 1 */ |
| 111 | { 30, 100, 240 }, /* PIO Mode 2 */ |
| 112 | { 30, 80, 180 }, /* PIO Mode 3 with IORDY */ |
| 113 | { 25, 70, 120 }, /* PIO Mode 4 with IORDY */ |
| 114 | { 20, 50, 100 } /* PIO Mode 5 with IORDY (nonstandard) */ |
| 115 | }; |
| 116 | |
| 117 | EXPORT_SYMBOL_GPL(ide_pio_timings); |
| 118 | |
| 119 | /* |
| 120 | * Shared data/functions for determining best PIO mode for an IDE drive. |
| 121 | * Most of this stuff originally lived in cmd640.c, and changes to the |
| 122 | * ide_pio_blacklist[] table should be made with EXTREME CAUTION to avoid |
| 123 | * breaking the fragile cmd640.c support. |
| 124 | */ |
| 125 | |
| 126 | /* |
| 127 | * Black list. Some drives incorrectly report their maximal PIO mode, |
| 128 | * at least in respect to CMD640. Here we keep info on some known drives. |
| 129 | */ |
| 130 | static struct ide_pio_info { |
| 131 | const char *name; |
| 132 | int pio; |
| 133 | } ide_pio_blacklist [] = { |
| 134 | /* { "Conner Peripherals 1275MB - CFS1275A", 4 }, */ |
| 135 | { "Conner Peripherals 540MB - CFS540A", 3 }, |
| 136 | |
| 137 | { "WDC AC2700", 3 }, |
| 138 | { "WDC AC2540", 3 }, |
| 139 | { "WDC AC2420", 3 }, |
| 140 | { "WDC AC2340", 3 }, |
| 141 | { "WDC AC2250", 0 }, |
| 142 | { "WDC AC2200", 0 }, |
| 143 | { "WDC AC21200", 4 }, |
| 144 | { "WDC AC2120", 0 }, |
| 145 | { "WDC AC2850", 3 }, |
| 146 | { "WDC AC1270", 3 }, |
| 147 | { "WDC AC1170", 1 }, |
| 148 | { "WDC AC1210", 1 }, |
| 149 | { "WDC AC280", 0 }, |
| 150 | /* { "WDC AC21000", 4 }, */ |
| 151 | { "WDC AC31000", 3 }, |
| 152 | { "WDC AC31200", 3 }, |
| 153 | /* { "WDC AC31600", 4 }, */ |
| 154 | |
| 155 | { "Maxtor 7131 AT", 1 }, |
| 156 | { "Maxtor 7171 AT", 1 }, |
| 157 | { "Maxtor 7213 AT", 1 }, |
| 158 | { "Maxtor 7245 AT", 1 }, |
| 159 | { "Maxtor 7345 AT", 1 }, |
| 160 | { "Maxtor 7546 AT", 3 }, |
| 161 | { "Maxtor 7540 AV", 3 }, |
| 162 | |
| 163 | { "SAMSUNG SHD-3121A", 1 }, |
| 164 | { "SAMSUNG SHD-3122A", 1 }, |
| 165 | { "SAMSUNG SHD-3172A", 1 }, |
| 166 | |
| 167 | /* { "ST51080A", 4 }, |
| 168 | * { "ST51270A", 4 }, |
| 169 | * { "ST31220A", 4 }, |
| 170 | * { "ST31640A", 4 }, |
| 171 | * { "ST32140A", 4 }, |
| 172 | * { "ST3780A", 4 }, |
| 173 | */ |
| 174 | { "ST5660A", 3 }, |
| 175 | { "ST3660A", 3 }, |
| 176 | { "ST3630A", 3 }, |
| 177 | { "ST3655A", 3 }, |
| 178 | { "ST3391A", 3 }, |
| 179 | { "ST3390A", 1 }, |
| 180 | { "ST3600A", 1 }, |
| 181 | { "ST3290A", 0 }, |
| 182 | { "ST3144A", 0 }, |
| 183 | { "ST3491A", 1 }, /* reports 3, should be 1 or 2 (depending on */ |
| 184 | /* drive) according to Seagates FIND-ATA program */ |
| 185 | |
| 186 | { "QUANTUM ELS127A", 0 }, |
| 187 | { "QUANTUM ELS170A", 0 }, |
| 188 | { "QUANTUM LPS240A", 0 }, |
| 189 | { "QUANTUM LPS210A", 3 }, |
| 190 | { "QUANTUM LPS270A", 3 }, |
| 191 | { "QUANTUM LPS365A", 3 }, |
| 192 | { "QUANTUM LPS540A", 3 }, |
| 193 | { "QUANTUM LIGHTNING 540A", 3 }, |
| 194 | { "QUANTUM LIGHTNING 730A", 3 }, |
| 195 | |
| 196 | { "QUANTUM FIREBALL_540", 3 }, /* Older Quantum Fireballs don't work */ |
| 197 | { "QUANTUM FIREBALL_640", 3 }, |
| 198 | { "QUANTUM FIREBALL_1080", 3 }, |
| 199 | { "QUANTUM FIREBALL_1280", 3 }, |
| 200 | { NULL, 0 } |
| 201 | }; |
| 202 | |
| 203 | /** |
| 204 | * ide_scan_pio_blacklist - check for a blacklisted drive |
| 205 | * @model: Drive model string |
| 206 | * |
| 207 | * This routine searches the ide_pio_blacklist for an entry |
| 208 | * matching the start/whole of the supplied model name. |
| 209 | * |
| 210 | * Returns -1 if no match found. |
| 211 | * Otherwise returns the recommended PIO mode from ide_pio_blacklist[]. |
| 212 | */ |
| 213 | |
| 214 | static int ide_scan_pio_blacklist (char *model) |
| 215 | { |
| 216 | struct ide_pio_info *p; |
| 217 | |
| 218 | for (p = ide_pio_blacklist; p->name != NULL; p++) { |
| 219 | if (strncmp(p->name, model, strlen(p->name)) == 0) |
| 220 | return p->pio; |
| 221 | } |
| 222 | return -1; |
| 223 | } |
| 224 | |
Bartlomiej Zolnierkiewicz | 7dd0008 | 2007-07-20 01:11:56 +0200 | [diff] [blame] | 225 | unsigned int ide_pio_cycle_time(ide_drive_t *drive, u8 pio) |
| 226 | { |
| 227 | struct hd_driveid *id = drive->id; |
| 228 | int cycle_time = 0; |
| 229 | |
| 230 | if (id->field_valid & 2) { |
| 231 | if (id->capability & 8) |
| 232 | cycle_time = id->eide_pio_iordy; |
| 233 | else |
| 234 | cycle_time = id->eide_pio; |
| 235 | } |
| 236 | |
| 237 | /* conservative "downgrade" for all pre-ATA2 drives */ |
| 238 | if (pio < 3) { |
| 239 | if (cycle_time && cycle_time < ide_pio_timings[pio].cycle_time) |
| 240 | cycle_time = 0; /* use standard timing */ |
| 241 | } |
| 242 | |
| 243 | return cycle_time ? cycle_time : ide_pio_timings[pio].cycle_time; |
| 244 | } |
| 245 | |
| 246 | EXPORT_SYMBOL_GPL(ide_pio_cycle_time); |
| 247 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | /** |
| 249 | * ide_get_best_pio_mode - get PIO mode from drive |
Sergei Shtylyov | 81d368e | 2007-03-03 17:48:53 +0100 | [diff] [blame] | 250 | * @drive: drive to consider |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | * @mode_wanted: preferred mode |
Sergei Shtylyov | 81d368e | 2007-03-03 17:48:53 +0100 | [diff] [blame] | 252 | * @max_mode: highest allowed mode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | * |
| 254 | * This routine returns the recommended PIO settings for a given drive, |
| 255 | * based on the drive->id information and the ide_pio_blacklist[]. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | * |
Sergei Shtylyov | 81d368e | 2007-03-03 17:48:53 +0100 | [diff] [blame] | 257 | * Drive PIO mode is auto-selected if 255 is passed as mode_wanted. |
| 258 | * This is used by most chipset support modules when "auto-tuning". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | */ |
| 260 | |
Bartlomiej Zolnierkiewicz | 2134758 | 2007-07-20 01:11:58 +0200 | [diff] [blame] | 261 | u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | { |
| 263 | int pio_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | struct hd_driveid* id = drive->id; |
| 265 | int overridden = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
Bartlomiej Zolnierkiewicz | 6a824c9 | 2007-07-20 01:11:58 +0200 | [diff] [blame] | 267 | if (mode_wanted != 255) |
| 268 | return min_t(u8, mode_wanted, max_mode); |
| 269 | |
| 270 | if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_BLACKLIST) == 0 && |
| 271 | (pio_mode = ide_scan_pio_blacklist(id->model)) != -1) { |
Bartlomiej Zolnierkiewicz | 342cdb6 | 2007-07-20 01:11:55 +0200 | [diff] [blame] | 272 | printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | } else { |
| 274 | pio_mode = id->tPIO; |
| 275 | if (pio_mode > 2) { /* 2 is maximum allowed tPIO value */ |
| 276 | pio_mode = 2; |
| 277 | overridden = 1; |
| 278 | } |
| 279 | if (id->field_valid & 2) { /* drive implements ATA2? */ |
Bartlomiej Zolnierkiewicz | 2229833 | 2007-07-20 01:11:55 +0200 | [diff] [blame] | 280 | if (id->capability & 8) { /* IORDY supported? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | if (id->eide_pio_modes & 7) { |
| 282 | overridden = 0; |
| 283 | if (id->eide_pio_modes & 4) |
| 284 | pio_mode = 5; |
| 285 | else if (id->eide_pio_modes & 2) |
| 286 | pio_mode = 4; |
| 287 | else |
| 288 | pio_mode = 3; |
| 289 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | } |
| 291 | } |
| 292 | |
Bartlomiej Zolnierkiewicz | 342cdb6 | 2007-07-20 01:11:55 +0200 | [diff] [blame] | 293 | if (overridden) |
| 294 | printk(KERN_INFO "%s: tPIO > 2, assuming tPIO = 2\n", |
| 295 | drive->name); |
| 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | /* |
| 298 | * Conservative "downgrade" for all pre-ATA2 drives |
| 299 | */ |
Bartlomiej Zolnierkiewicz | 6a824c9 | 2007-07-20 01:11:58 +0200 | [diff] [blame] | 300 | if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_DOWNGRADE) == 0 && |
| 301 | pio_mode && pio_mode < 4) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | pio_mode--; |
Bartlomiej Zolnierkiewicz | 342cdb6 | 2007-07-20 01:11:55 +0200 | [diff] [blame] | 303 | printk(KERN_INFO "%s: applying conservative " |
| 304 | "PIO \"downgrade\"\n", drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | } |
| 306 | } |
Bartlomiej Zolnierkiewicz | 7dd0008 | 2007-07-20 01:11:56 +0200 | [diff] [blame] | 307 | |
| 308 | if (pio_mode > max_mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | pio_mode = max_mode; |
Bartlomiej Zolnierkiewicz | 7dd0008 | 2007-07-20 01:11:56 +0200 | [diff] [blame] | 310 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | return pio_mode; |
| 312 | } |
| 313 | |
| 314 | EXPORT_SYMBOL_GPL(ide_get_best_pio_mode); |
| 315 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 316 | /* req_pio == "255" for auto-tune */ |
| 317 | void ide_set_pio(ide_drive_t *drive, u8 req_pio) |
| 318 | { |
| 319 | ide_hwif_t *hwif = drive->hwif; |
| 320 | u8 host_pio, pio; |
| 321 | |
| 322 | if (hwif->set_pio_mode == NULL) |
| 323 | return; |
| 324 | |
| 325 | BUG_ON(hwif->pio_mask == 0x00); |
| 326 | |
| 327 | host_pio = fls(hwif->pio_mask) - 1; |
| 328 | |
| 329 | pio = ide_get_best_pio_mode(drive, req_pio, host_pio); |
| 330 | |
| 331 | /* |
| 332 | * TODO: |
| 333 | * - report device max PIO mode |
| 334 | * - check req_pio != 255 against device max PIO mode |
| 335 | */ |
| 336 | printk(KERN_DEBUG "%s: host max PIO%d wanted PIO%d%s selected PIO%d\n", |
| 337 | drive->name, host_pio, req_pio, |
| 338 | req_pio == 255 ? "(auto-tune)" : "", pio); |
| 339 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 340 | (void)ide_set_pio_mode(drive, XFER_PIO_0 + pio); |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | EXPORT_SYMBOL_GPL(ide_set_pio); |
| 344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | /** |
| 346 | * ide_toggle_bounce - handle bounce buffering |
| 347 | * @drive: drive to update |
| 348 | * @on: on/off boolean |
| 349 | * |
| 350 | * Enable or disable bounce buffering for the device. Drives move |
| 351 | * between PIO and DMA and that changes the rules we need. |
| 352 | */ |
| 353 | |
| 354 | void ide_toggle_bounce(ide_drive_t *drive, int on) |
| 355 | { |
| 356 | u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */ |
| 357 | |
James Bottomley | 6593178 | 2005-11-18 23:13:33 +0100 | [diff] [blame] | 358 | if (!PCI_DMA_BUS_IS_PHYS) { |
| 359 | addr = BLK_BOUNCE_ANY; |
| 360 | } else if (on && drive->media == ide_disk) { |
| 361 | if (HWIF(drive)->pci_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | addr = HWIF(drive)->pci_dev->dma_mask; |
| 363 | } |
| 364 | |
| 365 | if (drive->queue) |
| 366 | blk_queue_bounce_limit(drive->queue, addr); |
| 367 | } |
| 368 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 369 | int ide_set_pio_mode(ide_drive_t *drive, const u8 mode) |
| 370 | { |
| 371 | ide_hwif_t *hwif = drive->hwif; |
| 372 | |
| 373 | if (hwif->set_pio_mode == NULL) |
| 374 | return -1; |
| 375 | |
| 376 | /* |
| 377 | * TODO: temporary hack for some legacy host drivers that didn't |
| 378 | * set transfer mode on the device in ->set_pio_mode method... |
| 379 | */ |
| 380 | if (hwif->set_dma_mode == NULL) { |
| 381 | hwif->set_pio_mode(drive, mode - XFER_PIO_0); |
| 382 | return 0; |
| 383 | } |
| 384 | |
| 385 | if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { |
| 386 | if (ide_config_drive_speed(drive, mode)) |
| 387 | return -1; |
| 388 | hwif->set_pio_mode(drive, mode - XFER_PIO_0); |
| 389 | return 0; |
| 390 | } else { |
| 391 | hwif->set_pio_mode(drive, mode - XFER_PIO_0); |
| 392 | return ide_config_drive_speed(drive, mode); |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | int ide_set_dma_mode(ide_drive_t *drive, const u8 mode) |
| 397 | { |
| 398 | ide_hwif_t *hwif = drive->hwif; |
| 399 | |
| 400 | if (hwif->set_dma_mode == NULL) |
| 401 | return -1; |
| 402 | |
| 403 | if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { |
| 404 | if (ide_config_drive_speed(drive, mode)) |
| 405 | return -1; |
| 406 | hwif->set_dma_mode(drive, mode); |
| 407 | return 0; |
| 408 | } else { |
| 409 | hwif->set_dma_mode(drive, mode); |
| 410 | return ide_config_drive_speed(drive, mode); |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | EXPORT_SYMBOL_GPL(ide_set_dma_mode); |
| 415 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | /** |
| 417 | * ide_set_xfer_rate - set transfer rate |
| 418 | * @drive: drive to set |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 419 | * @rate: speed to attempt to set |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | * |
| 421 | * General helper for setting the speed of an IDE device. This |
| 422 | * function knows about user enforced limits from the configuration |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 423 | * which ->set_pio_mode/->set_dma_mode does not. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | */ |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) |
| 427 | { |
Bartlomiej Zolnierkiewicz | f212ff2 | 2007-10-11 23:53:59 +0200 | [diff] [blame] | 428 | ide_hwif_t *hwif = drive->hwif; |
| 429 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 430 | if (hwif->set_dma_mode == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | return -1; |
Bartlomiej Zolnierkiewicz | f212ff2 | 2007-10-11 23:53:59 +0200 | [diff] [blame] | 432 | |
| 433 | rate = ide_rate_filter(drive, rate); |
| 434 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 435 | if (rate >= XFER_PIO_0 && rate <= XFER_PIO_5) |
| 436 | return ide_set_pio_mode(drive, rate); |
Bartlomiej Zolnierkiewicz | 8f4dd2e | 2007-10-11 23:54:02 +0200 | [diff] [blame] | 437 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 438 | /* |
| 439 | * TODO: transfer modes 0x00-0x07 passed from the user-space are |
| 440 | * currently handled here which needs fixing (please note that such |
| 441 | * case could happen iff the transfer mode has already been set on |
| 442 | * the device by ide-proc.c::set_xfer_rate()). |
| 443 | */ |
Bartlomiej Zolnierkiewicz | 8f4dd2e | 2007-10-11 23:54:02 +0200 | [diff] [blame] | 444 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 445 | return ide_set_dma_mode(drive, rate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | } |
| 447 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | static void ide_dump_opcode(ide_drive_t *drive) |
| 449 | { |
| 450 | struct request *rq; |
| 451 | u8 opcode = 0; |
| 452 | int found = 0; |
| 453 | |
| 454 | spin_lock(&ide_lock); |
| 455 | rq = NULL; |
| 456 | if (HWGROUP(drive)) |
| 457 | rq = HWGROUP(drive)->rq; |
| 458 | spin_unlock(&ide_lock); |
| 459 | if (!rq) |
| 460 | return; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 461 | if (rq->cmd_type == REQ_TYPE_ATA_CMD || |
| 462 | rq->cmd_type == REQ_TYPE_ATA_TASK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | char *args = rq->buffer; |
| 464 | if (args) { |
| 465 | opcode = args[0]; |
| 466 | found = 1; |
| 467 | } |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 468 | } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | ide_task_t *args = rq->special; |
| 470 | if (args) { |
| 471 | task_struct_t *tf = (task_struct_t *) args->tfRegister; |
| 472 | opcode = tf->command; |
| 473 | found = 1; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | printk("ide: failed opcode was: "); |
| 478 | if (!found) |
| 479 | printk("unknown\n"); |
| 480 | else |
| 481 | printk("0x%02x\n", opcode); |
| 482 | } |
| 483 | |
| 484 | static u8 ide_dump_ata_status(ide_drive_t *drive, const char *msg, u8 stat) |
| 485 | { |
| 486 | ide_hwif_t *hwif = HWIF(drive); |
| 487 | unsigned long flags; |
| 488 | u8 err = 0; |
| 489 | |
Ingo Molnar | 3d1c1cc | 2006-06-26 00:26:17 -0700 | [diff] [blame] | 490 | local_irq_save(flags); |
Denis Vlasenko | 13bbbf2 | 2005-07-03 17:09:13 +0200 | [diff] [blame] | 491 | printk("%s: %s: status=0x%02x { ", drive->name, msg, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | if (stat & BUSY_STAT) |
| 493 | printk("Busy "); |
| 494 | else { |
| 495 | if (stat & READY_STAT) printk("DriveReady "); |
| 496 | if (stat & WRERR_STAT) printk("DeviceFault "); |
| 497 | if (stat & SEEK_STAT) printk("SeekComplete "); |
| 498 | if (stat & DRQ_STAT) printk("DataRequest "); |
| 499 | if (stat & ECC_STAT) printk("CorrectedError "); |
| 500 | if (stat & INDEX_STAT) printk("Index "); |
| 501 | if (stat & ERR_STAT) printk("Error "); |
| 502 | } |
Denis Vlasenko | 13bbbf2 | 2005-07-03 17:09:13 +0200 | [diff] [blame] | 503 | printk("}\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) { |
| 505 | err = hwif->INB(IDE_ERROR_REG); |
Denis Vlasenko | 13bbbf2 | 2005-07-03 17:09:13 +0200 | [diff] [blame] | 506 | printk("%s: %s: error=0x%02x { ", drive->name, msg, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | if (err & ABRT_ERR) printk("DriveStatusError "); |
| 508 | if (err & ICRC_ERR) |
Denis Vlasenko | 13bbbf2 | 2005-07-03 17:09:13 +0200 | [diff] [blame] | 509 | printk((err & ABRT_ERR) ? "BadCRC " : "BadSector "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | if (err & ECC_ERR) printk("UncorrectableError "); |
| 511 | if (err & ID_ERR) printk("SectorIdNotFound "); |
| 512 | if (err & TRK0_ERR) printk("TrackZeroNotFound "); |
| 513 | if (err & MARK_ERR) printk("AddrMarkNotFound "); |
| 514 | printk("}"); |
| 515 | if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR || |
| 516 | (err & (ECC_ERR|ID_ERR|MARK_ERR))) { |
| 517 | if (drive->addressing == 1) { |
| 518 | __u64 sectors = 0; |
| 519 | u32 low = 0, high = 0; |
Bartlomiej Zolnierkiewicz | 12eda14 | 2007-11-13 22:09:15 +0100 | [diff] [blame] | 520 | hwif->OUTB(drive->ctl&~0x80, IDE_CONTROL_REG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | low = ide_read_24(drive); |
| 522 | hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG); |
| 523 | high = ide_read_24(drive); |
| 524 | sectors = ((__u64)high << 24) | low; |
| 525 | printk(", LBAsect=%llu, high=%d, low=%d", |
| 526 | (unsigned long long) sectors, |
| 527 | high, low); |
| 528 | } else { |
| 529 | u8 cur = hwif->INB(IDE_SELECT_REG); |
| 530 | if (cur & 0x40) { /* using LBA? */ |
| 531 | printk(", LBAsect=%ld", (unsigned long) |
| 532 | ((cur&0xf)<<24) |
| 533 | |(hwif->INB(IDE_HCYL_REG)<<16) |
| 534 | |(hwif->INB(IDE_LCYL_REG)<<8) |
| 535 | | hwif->INB(IDE_SECTOR_REG)); |
| 536 | } else { |
| 537 | printk(", CHS=%d/%d/%d", |
| 538 | (hwif->INB(IDE_HCYL_REG)<<8) + |
| 539 | hwif->INB(IDE_LCYL_REG), |
| 540 | cur & 0xf, |
| 541 | hwif->INB(IDE_SECTOR_REG)); |
| 542 | } |
| 543 | } |
| 544 | if (HWGROUP(drive) && HWGROUP(drive)->rq) |
| 545 | printk(", sector=%llu", |
| 546 | (unsigned long long)HWGROUP(drive)->rq->sector); |
| 547 | } |
Denis Vlasenko | 13bbbf2 | 2005-07-03 17:09:13 +0200 | [diff] [blame] | 548 | printk("\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | ide_dump_opcode(drive); |
| 551 | local_irq_restore(flags); |
| 552 | return err; |
| 553 | } |
| 554 | |
| 555 | /** |
| 556 | * ide_dump_atapi_status - print human readable atapi status |
| 557 | * @drive: drive that status applies to |
| 558 | * @msg: text message to print |
| 559 | * @stat: status byte to decode |
| 560 | * |
| 561 | * Error reporting, in human readable form (luxurious, but a memory hog). |
| 562 | */ |
| 563 | |
| 564 | static u8 ide_dump_atapi_status(ide_drive_t *drive, const char *msg, u8 stat) |
| 565 | { |
| 566 | unsigned long flags; |
| 567 | |
| 568 | atapi_status_t status; |
| 569 | atapi_error_t error; |
| 570 | |
| 571 | status.all = stat; |
| 572 | error.all = 0; |
Ingo Molnar | 3d1c1cc | 2006-06-26 00:26:17 -0700 | [diff] [blame] | 573 | local_irq_save(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | printk("%s: %s: status=0x%02x { ", drive->name, msg, stat); |
| 575 | if (status.b.bsy) |
| 576 | printk("Busy "); |
| 577 | else { |
| 578 | if (status.b.drdy) printk("DriveReady "); |
| 579 | if (status.b.df) printk("DeviceFault "); |
| 580 | if (status.b.dsc) printk("SeekComplete "); |
| 581 | if (status.b.drq) printk("DataRequest "); |
| 582 | if (status.b.corr) printk("CorrectedError "); |
| 583 | if (status.b.idx) printk("Index "); |
| 584 | if (status.b.check) printk("Error "); |
| 585 | } |
| 586 | printk("}\n"); |
| 587 | if (status.b.check && !status.b.bsy) { |
| 588 | error.all = HWIF(drive)->INB(IDE_ERROR_REG); |
| 589 | printk("%s: %s: error=0x%02x { ", drive->name, msg, error.all); |
| 590 | if (error.b.ili) printk("IllegalLengthIndication "); |
| 591 | if (error.b.eom) printk("EndOfMedia "); |
| 592 | if (error.b.abrt) printk("AbortedCommand "); |
| 593 | if (error.b.mcr) printk("MediaChangeRequested "); |
| 594 | if (error.b.sense_key) printk("LastFailedSense=0x%02x ", |
| 595 | error.b.sense_key); |
| 596 | printk("}\n"); |
| 597 | } |
| 598 | ide_dump_opcode(drive); |
| 599 | local_irq_restore(flags); |
| 600 | return error.all; |
| 601 | } |
| 602 | |
| 603 | /** |
| 604 | * ide_dump_status - translate ATA/ATAPI error |
| 605 | * @drive: drive the error occured on |
| 606 | * @msg: information string |
| 607 | * @stat: status byte |
| 608 | * |
| 609 | * Error reporting, in human readable form (luxurious, but a memory hog). |
| 610 | * Combines the drive name, message and status byte to provide a |
| 611 | * user understandable explanation of the device error. |
| 612 | */ |
| 613 | |
| 614 | u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat) |
| 615 | { |
| 616 | if (drive->media == ide_disk) |
| 617 | return ide_dump_ata_status(drive, msg, stat); |
| 618 | return ide_dump_atapi_status(drive, msg, stat); |
| 619 | } |
| 620 | |
| 621 | EXPORT_SYMBOL(ide_dump_status); |