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> |
Alan Cox | ccd32e2 | 2008-11-02 21:40:08 +0100 | [diff] [blame] | 3 | * Copyright (C) 2003 Red Hat |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/ide.h> |
| 22 | #include <linux/bitops.h> |
Michal Schmidt | 1e86240 | 2006-07-30 03:03:29 -0700 | [diff] [blame] | 23 | #include <linux/nmi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
| 25 | #include <asm/byteorder.h> |
| 26 | #include <asm/irq.h> |
| 27 | #include <asm/uaccess.h> |
| 28 | #include <asm/io.h> |
| 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | void SELECT_DRIVE (ide_drive_t *drive) |
| 31 | { |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 32 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 33 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Bartlomiej Zolnierkiewicz | 40f095f | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 34 | ide_task_t task; |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 35 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 36 | if (port_ops && port_ops->selectproc) |
| 37 | port_ops->selectproc(drive); |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 38 | |
Bartlomiej Zolnierkiewicz | 40f095f | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 39 | memset(&task, 0, sizeof(task)); |
| 40 | task.tf_flags = IDE_TFLAG_OUT_DEVICE; |
| 41 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 42 | drive->hwif->tp_ops->tf_load(drive, &task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | } |
| 44 | |
Bartlomiej Zolnierkiewicz | ed4af48 | 2008-07-15 21:21:48 +0200 | [diff] [blame] | 45 | void SELECT_MASK(ide_drive_t *drive, int mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 47 | const struct ide_port_ops *port_ops = drive->hwif->port_ops; |
| 48 | |
| 49 | if (port_ops && port_ops->maskproc) |
| 50 | port_ops->maskproc(drive, mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | } |
| 52 | |
Bartlomiej Zolnierkiewicz | 92eb438 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 53 | u8 ide_read_error(ide_drive_t *drive) |
| 54 | { |
| 55 | ide_task_t task; |
| 56 | |
| 57 | memset(&task, 0, sizeof(task)); |
| 58 | task.tf_flags = IDE_TFLAG_IN_FEATURE; |
| 59 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 60 | drive->hwif->tp_ops->tf_read(drive, &task); |
Bartlomiej Zolnierkiewicz | 92eb438 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 61 | |
| 62 | return task.tf.error; |
| 63 | } |
| 64 | EXPORT_SYMBOL_GPL(ide_read_error); |
| 65 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 66 | void ide_fix_driveid(u16 *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | { |
| 68 | #ifndef __LITTLE_ENDIAN |
| 69 | # ifdef __BIG_ENDIAN |
| 70 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
Bartlomiej Zolnierkiewicz | 48fb268 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 72 | for (i = 0; i < 256; i++) |
Bartlomiej Zolnierkiewicz | 5b90e99 | 2008-10-10 22:39:18 +0200 | [diff] [blame] | 73 | id[i] = __le16_to_cpu(id[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | # else |
| 75 | # error "Please fix <asm/byteorder.h>" |
| 76 | # endif |
| 77 | #endif |
| 78 | } |
| 79 | |
Bartlomiej Zolnierkiewicz | 0174511 | 2007-11-05 21:42:29 +0100 | [diff] [blame] | 80 | /* |
| 81 | * ide_fixstring() cleans up and (optionally) byte-swaps a text string, |
| 82 | * removing leading/trailing blanks and compressing internal blanks. |
| 83 | * It is primarily used to tidy up the model name/number fields as |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 84 | * returned by the ATA_CMD_ID_ATA[PI] commands. |
Bartlomiej Zolnierkiewicz | 0174511 | 2007-11-05 21:42:29 +0100 | [diff] [blame] | 85 | */ |
| 86 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | void ide_fixstring (u8 *s, const int bytecount, const int byteswap) |
| 88 | { |
Linus Torvalds | 1a7809e | 2008-10-10 22:39:22 +0200 | [diff] [blame] | 89 | u8 *p, *end = &s[bytecount & ~1]; /* bytecount must be even */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
| 91 | if (byteswap) { |
| 92 | /* convert from big-endian to host byte order */ |
Linus Torvalds | 1a7809e | 2008-10-10 22:39:22 +0200 | [diff] [blame] | 93 | for (p = s ; p != end ; p += 2) |
| 94 | be16_to_cpus((u16 *) p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } |
Linus Torvalds | 1a7809e | 2008-10-10 22:39:22 +0200 | [diff] [blame] | 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | /* strip leading blanks */ |
Linus Torvalds | 1a7809e | 2008-10-10 22:39:22 +0200 | [diff] [blame] | 98 | p = s; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | while (s != end && *s == ' ') |
| 100 | ++s; |
| 101 | /* compress internal blanks and strip trailing blanks */ |
| 102 | while (s != end && *s) { |
| 103 | if (*s++ != ' ' || (s != end && *s && *s != ' ')) |
| 104 | *p++ = *(s-1); |
| 105 | } |
| 106 | /* wipe out trailing garbage */ |
| 107 | while (p != end) |
| 108 | *p++ = '\0'; |
| 109 | } |
| 110 | |
| 111 | EXPORT_SYMBOL(ide_fixstring); |
| 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | * This routine busy-waits for the drive status to be not "busy". |
| 115 | * It then checks the status for all of the "good" bits and none |
| 116 | * 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] | 117 | * cases return error -- caller may then invoke ide_error(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | * |
| 119 | * This routine should get fixed to not hog the cpu during extra long waits.. |
| 120 | * That could be done by busy-waiting for the first jiffy or two, and then |
| 121 | * setting a timer to wake up at half second intervals thereafter, |
| 122 | * until timeout is achieved, before timing out. |
| 123 | */ |
Bartlomiej Zolnierkiewicz | aedea59 | 2007-10-13 17:47:50 +0200 | [diff] [blame] | 124 | 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] | 125 | { |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 126 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 127 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | unsigned long flags; |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 129 | int i; |
| 130 | u8 stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
| 132 | udelay(1); /* spec allows drive 400ns to assert "BUSY" */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 133 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 134 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 135 | if (stat & ATA_BUSY) { |
Bartlomiej Zolnierkiewicz | 9b89603 | 2009-01-14 19:19:02 +0100 | [diff] [blame] | 136 | local_save_flags(flags); |
Bartlomiej Zolnierkiewicz | 54cc142 | 2009-01-06 17:20:52 +0100 | [diff] [blame] | 137 | local_irq_enable_in_hardirq(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | timeout += jiffies; |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 139 | while ((stat = tp_ops->read_status(hwif)) & ATA_BUSY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | if (time_after(jiffies, timeout)) { |
| 141 | /* |
| 142 | * One last read after the timeout in case |
| 143 | * heavy interrupt load made us not make any |
| 144 | * progress during the timeout.. |
| 145 | */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 146 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 147 | if ((stat & ATA_BUSY) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | break; |
| 149 | |
| 150 | local_irq_restore(flags); |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 151 | *rstat = stat; |
| 152 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | } |
| 154 | } |
| 155 | local_irq_restore(flags); |
| 156 | } |
| 157 | /* |
| 158 | * Allow status to settle, then read it again. |
| 159 | * A few rare drives vastly violate the 400ns spec here, |
| 160 | * so we'll wait up to 10usec for a "good" status |
| 161 | * rather than expensively fail things immediately. |
| 162 | * This fix courtesy of Matthew Faupel & Niccolo Rigacci. |
| 163 | */ |
| 164 | for (i = 0; i < 10; i++) { |
| 165 | udelay(1); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 166 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 167 | |
| 168 | if (OK_STAT(stat, good, bad)) { |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 169 | *rstat = stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | return 0; |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 171 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | } |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 173 | *rstat = stat; |
| 174 | return -EFAULT; |
| 175 | } |
| 176 | |
| 177 | /* |
| 178 | * In case of error returns error value after doing "*startstop = ide_error()". |
| 179 | * The caller should return the updated value of "startstop" in this case, |
| 180 | * "startstop" is unchanged when the function returns 0. |
| 181 | */ |
| 182 | int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout) |
| 183 | { |
| 184 | int err; |
| 185 | u8 stat; |
| 186 | |
| 187 | /* bail early if we've exceeded max_failures */ |
| 188 | if (drive->max_failures && (drive->failures > drive->max_failures)) { |
| 189 | *startstop = ide_stopped; |
| 190 | return 1; |
| 191 | } |
| 192 | |
| 193 | err = __ide_wait_stat(drive, good, bad, timeout, &stat); |
| 194 | |
| 195 | if (err) { |
| 196 | char *s = (err == -EBUSY) ? "status timeout" : "status error"; |
| 197 | *startstop = ide_error(drive, s, stat); |
| 198 | } |
| 199 | |
| 200 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | EXPORT_SYMBOL(ide_wait_stat); |
| 204 | |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 205 | /** |
| 206 | * ide_in_drive_list - look for drive in black/white list |
| 207 | * @id: drive identifier |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 208 | * @table: list to inspect |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 209 | * |
| 210 | * Look for a drive in the blacklist and the whitelist tables |
| 211 | * Returns 1 if the drive is found in the table. |
| 212 | */ |
| 213 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 214 | int ide_in_drive_list(u16 *id, const struct drive_list_entry *table) |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 215 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 216 | for ( ; table->id_model; table++) |
| 217 | if ((!strcmp(table->id_model, (char *)&id[ATA_ID_PROD])) && |
| 218 | (!table->id_firmware || |
| 219 | strstr((char *)&id[ATA_ID_FW_REV], table->id_firmware))) |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 220 | return 1; |
| 221 | return 0; |
| 222 | } |
| 223 | |
Bartlomiej Zolnierkiewicz | b0244a0 | 2007-08-20 22:42:57 +0200 | [diff] [blame] | 224 | EXPORT_SYMBOL_GPL(ide_in_drive_list); |
| 225 | |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 226 | /* |
| 227 | * Early UDMA66 devices don't set bit14 to 1, only bit13 is valid. |
| 228 | * We list them here and depend on the device side cable detection for them. |
Bartlomiej Zolnierkiewicz | 8588a2b7 | 2007-10-26 20:31:16 +0200 | [diff] [blame] | 229 | * |
| 230 | * Some optical devices with the buggy firmwares have the same problem. |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 231 | */ |
| 232 | static const struct drive_list_entry ivb_list[] = { |
| 233 | { "QUANTUM FIREBALLlct10 05" , "A03.0900" }, |
Bartlomiej Zolnierkiewicz | 8588a2b7 | 2007-10-26 20:31:16 +0200 | [diff] [blame] | 234 | { "TSSTcorp CDDVDW SH-S202J" , "SB00" }, |
Peter Missel | e97564f | 2007-11-27 21:35:57 +0100 | [diff] [blame] | 235 | { "TSSTcorp CDDVDW SH-S202J" , "SB01" }, |
| 236 | { "TSSTcorp CDDVDW SH-S202N" , "SB00" }, |
| 237 | { "TSSTcorp CDDVDW SH-S202N" , "SB01" }, |
Alexander Smal | 3ced5c4 | 2008-04-28 23:44:43 +0200 | [diff] [blame] | 238 | { "TSSTcorp CDDVDW SH-S202H" , "SB00" }, |
| 239 | { "TSSTcorp CDDVDW SH-S202H" , "SB01" }, |
Bartlomiej Zolnierkiewicz | c7b997b | 2008-12-02 20:40:03 +0100 | [diff] [blame] | 240 | { "SAMSUNG SP0822N" , "WA100-10" }, |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 241 | { NULL , NULL } |
| 242 | }; |
| 243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | /* |
| 245 | * All hosts that use the 80c ribbon must use! |
| 246 | * The name is derived from upper byte of word 93 and the 80c ribbon. |
| 247 | */ |
| 248 | u8 eighty_ninty_three (ide_drive_t *drive) |
| 249 | { |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 250 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 251 | u16 *id = drive->id; |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 252 | int ivb = ide_in_drive_list(id, ivb_list); |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 253 | |
Bartlomiej Zolnierkiewicz | 49521f9 | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 254 | if (hwif->cbl == ATA_CBL_PATA40_SHORT) |
| 255 | return 1; |
| 256 | |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 257 | if (ivb) |
| 258 | printk(KERN_DEBUG "%s: skipping word 93 validity check\n", |
| 259 | drive->name); |
| 260 | |
Bartlomiej Zolnierkiewicz | 367d7e7 | 2008-10-10 22:39:30 +0200 | [diff] [blame] | 261 | if (ata_id_is_sata(id) && !ivb) |
George Kibardin | b98f880 | 2008-01-10 23:03:42 +0100 | [diff] [blame] | 262 | return 1; |
| 263 | |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 264 | if (hwif->cbl != ATA_CBL_PATA80 && !ivb) |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 265 | goto no_80w; |
Alan Cox | 1a1276e | 2006-06-28 04:26:58 -0700 | [diff] [blame] | 266 | |
Bartlomiej Zolnierkiewicz | f68d932 | 2007-03-26 23:03:18 +0200 | [diff] [blame] | 267 | /* |
| 268 | * FIXME: |
Bartlomiej Zolnierkiewicz | f367bed | 2008-03-29 19:48:21 +0100 | [diff] [blame] | 269 | * - change master/slave IDENTIFY order |
Bartlomiej Zolnierkiewicz | a5b7e70 | 2007-08-20 22:42:56 +0200 | [diff] [blame] | 270 | * - force bit13 (80c cable present) check also for !ivb devices |
Bartlomiej Zolnierkiewicz | f68d932 | 2007-03-26 23:03:18 +0200 | [diff] [blame] | 271 | * (unless the slave device is pre-ATA3) |
| 272 | */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 273 | if ((id[ATA_ID_HW_CONFIG] & 0x4000) || |
| 274 | (ivb && (id[ATA_ID_HW_CONFIG] & 0x2000))) |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 275 | return 1; |
| 276 | |
| 277 | no_80w: |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 278 | if (drive->dev_flags & IDE_DFLAG_UDMA33_WARNED) |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 279 | return 0; |
| 280 | |
| 281 | printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, " |
| 282 | "limiting max speed to UDMA33\n", |
Bartlomiej Zolnierkiewicz | 49521f9 | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 283 | drive->name, |
| 284 | hwif->cbl == ATA_CBL_PATA80 ? "drive" : "host"); |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 285 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 286 | drive->dev_flags |= IDE_DFLAG_UDMA33_WARNED; |
Bartlomiej Zolnierkiewicz | 7f8f48a | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 287 | |
| 288 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | } |
| 290 | |
Bartlomiej Zolnierkiewicz | 8a45513 | 2007-10-20 00:32:36 +0200 | [diff] [blame] | 291 | int ide_driveid_update(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | { |
Bartlomiej Zolnierkiewicz | 8a45513 | 2007-10-20 00:32:36 +0200 | [diff] [blame] | 293 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 294 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 295 | u16 *id; |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 296 | unsigned long flags; |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 297 | u8 stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | /* |
| 300 | * Re-read drive->id for possible DMA mode |
| 301 | * change (copied from ide-probe.c) |
| 302 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | |
| 304 | SELECT_MASK(drive, 1); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 305 | tp_ops->set_irq(hwif, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | msleep(50); |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 307 | tp_ops->exec_command(hwif, ATA_CMD_ID_ATA); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 308 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 309 | if (ide_busy_sleep(hwif, WAIT_WORSTCASE, 1)) { |
| 310 | SELECT_MASK(drive, 0); |
| 311 | return 0; |
| 312 | } |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 313 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 314 | msleep(50); /* wait for IRQ and ATA_DRQ */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 315 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 316 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 317 | if (!OK_STAT(stat, ATA_DRQ, BAD_R_STAT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | SELECT_MASK(drive, 0); |
| 319 | printk("%s: CHECK for good STATUS\n", drive->name); |
| 320 | return 0; |
| 321 | } |
| 322 | local_irq_save(flags); |
| 323 | SELECT_MASK(drive, 0); |
Bartlomiej Zolnierkiewicz | 151a670 | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 324 | id = kmalloc(SECTOR_SIZE, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | if (!id) { |
| 326 | local_irq_restore(flags); |
| 327 | return 0; |
| 328 | } |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 329 | tp_ops->input_data(drive, NULL, id, SECTOR_SIZE); |
| 330 | (void)tp_ops->read_status(hwif); /* clear drive IRQ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | local_irq_enable(); |
| 332 | local_irq_restore(flags); |
| 333 | ide_fix_driveid(id); |
Bartlomiej Zolnierkiewicz | 3ab7efe | 2007-12-12 23:31:58 +0100 | [diff] [blame] | 334 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 335 | drive->id[ATA_ID_UDMA_MODES] = id[ATA_ID_UDMA_MODES]; |
| 336 | drive->id[ATA_ID_MWDMA_MODES] = id[ATA_ID_MWDMA_MODES]; |
| 337 | drive->id[ATA_ID_SWDMA_MODES] = id[ATA_ID_SWDMA_MODES]; |
| 338 | /* anything more ? */ |
| 339 | |
| 340 | kfree(id); |
| 341 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 342 | if ((drive->dev_flags & IDE_DFLAG_USING_DMA) && ide_id_dma_bug(drive)) |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 343 | ide_dma_off(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
| 345 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | } |
| 347 | |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 348 | int ide_config_drive_speed(ide_drive_t *drive, u8 speed) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | { |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 350 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 351 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 352 | u16 *id = drive->id, i; |
Sergei Shtylyov | 89613e6 | 2007-11-27 21:35:52 +0100 | [diff] [blame] | 353 | int error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | u8 stat; |
Bartlomiej Zolnierkiewicz | 59be2c8 | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 355 | ide_task_t task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | #ifdef CONFIG_BLK_DEV_IDEDMA |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 358 | if (hwif->dma_ops) /* check if host supports DMA */ |
| 359 | hwif->dma_ops->dma_host_set(drive, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | #endif |
| 361 | |
Sergei Shtylyov | 89613e6 | 2007-11-27 21:35:52 +0100 | [diff] [blame] | 362 | /* Skip setting PIO flow-control modes on pre-EIDE drives */ |
Bartlomiej Zolnierkiewicz | 48fb268 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 363 | if ((speed & 0xf8) == XFER_PIO_0 && ata_id_has_iordy(drive->id) == 0) |
Sergei Shtylyov | 89613e6 | 2007-11-27 21:35:52 +0100 | [diff] [blame] | 364 | goto skip; |
| 365 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | /* |
| 367 | * Don't use ide_wait_cmd here - it will |
| 368 | * attempt to set_geometry and recalibrate, |
| 369 | * but for some reason these don't work at |
| 370 | * this point (lost interrupt). |
| 371 | */ |
Bartlomiej Zolnierkiewicz | ee1b1cc | 2009-03-24 23:22:47 +0100 | [diff] [blame^] | 372 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | /* |
| 374 | * FIXME: we race against the running IRQ here if |
| 375 | * this is called from non IRQ context. If we use |
| 376 | * disable_irq() we hang on the error path. Work |
| 377 | * is needed. |
| 378 | */ |
Bartlomiej Zolnierkiewicz | ee1b1cc | 2009-03-24 23:22:47 +0100 | [diff] [blame^] | 379 | disable_irq_nosync(hwif->irq); |
| 380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | udelay(1); |
| 382 | SELECT_DRIVE(drive); |
Sergei Shtylyov | e5403bf | 2008-10-17 18:09:15 +0200 | [diff] [blame] | 383 | SELECT_MASK(drive, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | udelay(1); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 385 | tp_ops->set_irq(hwif, 0); |
Bartlomiej Zolnierkiewicz | 59be2c8 | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 386 | |
| 387 | memset(&task, 0, sizeof(task)); |
| 388 | task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT; |
| 389 | task.tf.feature = SETFEATURES_XFER; |
| 390 | task.tf.nsect = speed; |
| 391 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 392 | tp_ops->tf_load(drive, &task); |
Bartlomiej Zolnierkiewicz | 59be2c8 | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 393 | |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 394 | tp_ops->exec_command(hwif, ATA_CMD_SET_FEATURES); |
Bartlomiej Zolnierkiewicz | 59be2c8 | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 395 | |
Bartlomiej Zolnierkiewicz | 81ca691 | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 396 | if (drive->quirk_list == 2) |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 397 | tp_ops->set_irq(hwif, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 399 | error = __ide_wait_stat(drive, drive->ready_stat, |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 400 | ATA_BUSY | ATA_DRQ | ATA_ERR, |
Bartlomiej Zolnierkiewicz | 74af21c | 2007-10-13 17:47:49 +0200 | [diff] [blame] | 401 | WAIT_CMD, &stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | |
| 403 | SELECT_MASK(drive, 0); |
| 404 | |
| 405 | enable_irq(hwif->irq); |
| 406 | |
| 407 | if (error) { |
| 408 | (void) ide_dump_status(drive, "set_drive_speed_status", stat); |
| 409 | return error; |
| 410 | } |
| 411 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 412 | id[ATA_ID_UDMA_MODES] &= ~0xFF00; |
| 413 | id[ATA_ID_MWDMA_MODES] &= ~0x0F00; |
| 414 | id[ATA_ID_SWDMA_MODES] &= ~0x0F00; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
Sergei Shtylyov | 89613e6 | 2007-11-27 21:35:52 +0100 | [diff] [blame] | 416 | skip: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | #ifdef CONFIG_BLK_DEV_IDEDMA |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 418 | if (speed >= XFER_SW_DMA_0 && (drive->dev_flags & IDE_DFLAG_USING_DMA)) |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 419 | hwif->dma_ops->dma_host_set(drive, 1); |
| 420 | else if (hwif->dma_ops) /* check if host supports DMA */ |
Bartlomiej Zolnierkiewicz | 4a546e0 | 2008-01-26 20:13:01 +0100 | [diff] [blame] | 421 | ide_dma_off_quietly(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | #endif |
| 423 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 424 | if (speed >= XFER_UDMA_0) { |
| 425 | i = 1 << (speed - XFER_UDMA_0); |
| 426 | id[ATA_ID_UDMA_MODES] |= (i << 8 | i); |
| 427 | } else if (speed >= XFER_MW_DMA_0) { |
| 428 | i = 1 << (speed - XFER_MW_DMA_0); |
| 429 | id[ATA_ID_MWDMA_MODES] |= (i << 8 | i); |
| 430 | } else if (speed >= XFER_SW_DMA_0) { |
| 431 | i = 1 << (speed - XFER_SW_DMA_0); |
| 432 | id[ATA_ID_SWDMA_MODES] |= (i << 8 | i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | } |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | if (!drive->init_speed) |
| 436 | drive->init_speed = speed; |
| 437 | drive->current_speed = speed; |
| 438 | return error; |
| 439 | } |
| 440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | /* |
| 442 | * This should get invoked any time we exit the driver to |
| 443 | * wait for an interrupt response from a drive. handler() points |
| 444 | * at the appropriate code to handle the next interrupt, and a |
| 445 | * timer is started to prevent us from waiting forever in case |
| 446 | * something goes wrong (see the ide_timer_expiry() handler later on). |
| 447 | * |
| 448 | * See also ide_execute_command |
| 449 | */ |
| 450 | static void __ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, |
| 451 | unsigned int timeout, ide_expiry_t *expiry) |
| 452 | { |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 453 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 455 | BUG_ON(hwif->handler); |
| 456 | hwif->handler = handler; |
| 457 | hwif->expiry = expiry; |
| 458 | hwif->timer.expires = jiffies + timeout; |
| 459 | hwif->req_gen_timer = hwif->req_gen; |
| 460 | add_timer(&hwif->timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | } |
| 462 | |
| 463 | void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, |
| 464 | unsigned int timeout, ide_expiry_t *expiry) |
| 465 | { |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 466 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | unsigned long flags; |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 468 | |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 469 | spin_lock_irqsave(&hwif->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | __ide_set_handler(drive, handler, timeout, expiry); |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 471 | spin_unlock_irqrestore(&hwif->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | } |
| 473 | |
| 474 | EXPORT_SYMBOL(ide_set_handler); |
| 475 | |
| 476 | /** |
| 477 | * ide_execute_command - execute an IDE command |
| 478 | * @drive: IDE drive to issue the command against |
| 479 | * @command: command byte to write |
| 480 | * @handler: handler for next phase |
| 481 | * @timeout: timeout for command |
| 482 | * @expiry: handler to run on timeout |
| 483 | * |
| 484 | * Helper function to issue an IDE command. This handles the |
| 485 | * atomicity requirements, command timing and ensures that the |
| 486 | * handler and IRQ setup do not race. All IDE command kick off |
| 487 | * should go via this function or do equivalent locking. |
| 488 | */ |
Bartlomiej Zolnierkiewicz | cd2a2d9 | 2008-01-25 22:17:06 +0100 | [diff] [blame] | 489 | |
| 490 | void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler, |
| 491 | unsigned timeout, ide_expiry_t *expiry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | { |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 493 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | unsigned long flags; |
Bartlomiej Zolnierkiewicz | 629f944 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 495 | |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 496 | spin_lock_irqsave(&hwif->lock, flags); |
Bartlomiej Zolnierkiewicz | 629f944 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 497 | __ide_set_handler(drive, handler, timeout, expiry); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 498 | hwif->tp_ops->exec_command(hwif, cmd); |
Bartlomiej Zolnierkiewicz | 629f944 | 2008-02-02 19:56:46 +0100 | [diff] [blame] | 499 | /* |
| 500 | * Drive takes 400nS to respond, we must avoid the IRQ being |
| 501 | * serviced before that. |
| 502 | * |
| 503 | * FIXME: we could skip this delay with care on non shared devices |
| 504 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | ndelay(400); |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 506 | spin_unlock_irqrestore(&hwif->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | EXPORT_SYMBOL(ide_execute_command); |
| 509 | |
Bartlomiej Zolnierkiewicz | 1fc1425 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 510 | void ide_execute_pkt_cmd(ide_drive_t *drive) |
| 511 | { |
| 512 | ide_hwif_t *hwif = drive->hwif; |
| 513 | unsigned long flags; |
| 514 | |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 515 | spin_lock_irqsave(&hwif->lock, flags); |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 516 | hwif->tp_ops->exec_command(hwif, ATA_CMD_PACKET); |
Bartlomiej Zolnierkiewicz | 1fc1425 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 517 | ndelay(400); |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 518 | spin_unlock_irqrestore(&hwif->lock, flags); |
Bartlomiej Zolnierkiewicz | 1fc1425 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 519 | } |
| 520 | EXPORT_SYMBOL_GPL(ide_execute_pkt_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 522 | static inline void ide_complete_drive_reset(ide_drive_t *drive, int err) |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 523 | { |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 524 | struct request *rq = drive->hwif->rq; |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 525 | |
| 526 | if (rq && blk_special_request(rq) && rq->cmd[0] == REQ_DRIVE_RESET) |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 527 | ide_end_request(drive, err ? err : 1, 0); |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 528 | } |
| 529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | /* needed below */ |
| 531 | static ide_startstop_t do_reset1 (ide_drive_t *, int); |
| 532 | |
| 533 | /* |
| 534 | * atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms |
| 535 | * during an atapi drive reset operation. If the drive has not yet responded, |
| 536 | * and we have not yet hit our maximum waiting time, then the timer is restarted |
| 537 | * for another 50ms. |
| 538 | */ |
| 539 | static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive) |
| 540 | { |
Bartlomiej Zolnierkiewicz | b73c7ee | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 541 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | u8 stat; |
| 543 | |
| 544 | SELECT_DRIVE(drive); |
| 545 | udelay (10); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 546 | stat = hwif->tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 548 | if (OK_STAT(stat, 0, ATA_BUSY)) |
Bartlomiej Zolnierkiewicz | 4d7bb47 | 2009-03-24 23:22:47 +0100 | [diff] [blame] | 549 | printk(KERN_INFO "%s: ATAPI reset complete\n", drive->name); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 550 | else { |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 551 | if (time_before(jiffies, hwif->poll_timeout)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); |
| 553 | /* continue polling */ |
| 554 | return ide_started; |
| 555 | } |
| 556 | /* end of polling */ |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 557 | hwif->polling = 0; |
Bartlomiej Zolnierkiewicz | 4d7bb47 | 2009-03-24 23:22:47 +0100 | [diff] [blame] | 558 | printk(KERN_ERR "%s: ATAPI reset timed-out, status=0x%02x\n", |
| 559 | drive->name, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | /* do it the old fashioned way */ |
| 561 | return do_reset1(drive, 1); |
| 562 | } |
| 563 | /* done polling */ |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 564 | hwif->polling = 0; |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 565 | ide_complete_drive_reset(drive, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | return ide_stopped; |
| 567 | } |
| 568 | |
Bartlomiej Zolnierkiewicz | 0e3d84a | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 569 | static void ide_reset_report_error(ide_hwif_t *hwif, u8 err) |
| 570 | { |
| 571 | static const char *err_master_vals[] = |
| 572 | { NULL, "passed", "formatter device error", |
| 573 | "sector buffer error", "ECC circuitry error", |
| 574 | "controlling MPU error" }; |
| 575 | |
| 576 | u8 err_master = err & 0x7f; |
| 577 | |
| 578 | printk(KERN_ERR "%s: reset: master: ", hwif->name); |
| 579 | if (err_master && err_master < 6) |
| 580 | printk(KERN_CONT "%s", err_master_vals[err_master]); |
| 581 | else |
| 582 | printk(KERN_CONT "error (0x%02x?)", err); |
| 583 | if (err & 0x80) |
| 584 | printk(KERN_CONT "; slave: failed"); |
| 585 | printk(KERN_CONT "\n"); |
| 586 | } |
| 587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | /* |
| 589 | * reset_pollfunc() gets invoked to poll the interface for completion every 50ms |
| 590 | * during an ide reset operation. If the drives have not yet responded, |
| 591 | * and we have not yet hit our maximum waiting time, then the timer is restarted |
| 592 | * for another 50ms. |
| 593 | */ |
| 594 | static ide_startstop_t reset_pollfunc (ide_drive_t *drive) |
| 595 | { |
Bartlomiej Zolnierkiewicz | 898ec22 | 2009-01-06 17:20:52 +0100 | [diff] [blame] | 596 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 597 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | u8 tmp; |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 599 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 601 | if (port_ops && port_ops->reset_poll) { |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 602 | err = port_ops->reset_poll(drive); |
| 603 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | printk(KERN_ERR "%s: host reset_poll failure for %s.\n", |
| 605 | hwif->name, drive->name); |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 606 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | } |
| 608 | } |
| 609 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 610 | tmp = hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 611 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 612 | if (!OK_STAT(tmp, 0, ATA_BUSY)) { |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 613 | if (time_before(jiffies, hwif->poll_timeout)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); |
| 615 | /* continue polling */ |
| 616 | return ide_started; |
| 617 | } |
Bartlomiej Zolnierkiewicz | 4d7bb47 | 2009-03-24 23:22:47 +0100 | [diff] [blame] | 618 | printk(KERN_ERR "%s: reset timed-out, status=0x%02x\n", |
| 619 | hwif->name, tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | drive->failures++; |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 621 | err = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | } else { |
Bartlomiej Zolnierkiewicz | 64a57fe | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 623 | tmp = ide_read_error(drive); |
| 624 | |
| 625 | if (tmp == 1) { |
Bartlomiej Zolnierkiewicz | 0e3d84a | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 626 | printk(KERN_INFO "%s: reset: success\n", hwif->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | drive->failures = 0; |
| 628 | } else { |
Bartlomiej Zolnierkiewicz | 0e3d84a | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 629 | ide_reset_report_error(hwif, tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | drive->failures++; |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 631 | err = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | } |
| 633 | } |
Elias Oltmanns | 79e36a9 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 634 | out: |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 635 | hwif->polling = 0; /* done polling */ |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 636 | ide_complete_drive_reset(drive, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | return ide_stopped; |
| 638 | } |
| 639 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | static void ide_disk_pre_reset(ide_drive_t *drive) |
| 641 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 642 | int legacy = (drive->id[ATA_ID_CFS_ENABLE_2] & 0x0400) ? 0 : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
| 644 | drive->special.all = 0; |
| 645 | drive->special.b.set_geometry = legacy; |
| 646 | drive->special.b.recalibrate = legacy; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 647 | |
Bartlomiej Zolnierkiewicz | 4ee06b7 | 2008-01-25 22:17:08 +0100 | [diff] [blame] | 648 | drive->mult_count = 0; |
Elias Oltmanns | 4abdc6e | 2008-10-13 21:39:50 +0200 | [diff] [blame] | 649 | drive->dev_flags &= ~IDE_DFLAG_PARKED; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 650 | |
| 651 | if ((drive->dev_flags & IDE_DFLAG_KEEP_SETTINGS) == 0 && |
| 652 | (drive->dev_flags & IDE_DFLAG_USING_DMA) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | drive->mult_req = 0; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 654 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | if (drive->mult_req != drive->mult_count) |
| 656 | drive->special.b.set_multmode = 1; |
| 657 | } |
| 658 | |
| 659 | static void pre_reset(ide_drive_t *drive) |
| 660 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 661 | const struct ide_port_ops *port_ops = drive->hwif->port_ops; |
| 662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | if (drive->media == ide_disk) |
| 664 | ide_disk_pre_reset(drive); |
| 665 | else |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 666 | drive->dev_flags |= IDE_DFLAG_POST_RESET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 668 | if (drive->dev_flags & IDE_DFLAG_USING_DMA) { |
Bartlomiej Zolnierkiewicz | 99ffbe0 | 2008-02-02 19:56:47 +0100 | [diff] [blame] | 669 | if (drive->crc_count) |
Bartlomiej Zolnierkiewicz | 578cfa0 | 2008-02-02 19:56:47 +0100 | [diff] [blame] | 670 | ide_check_dma_crc(drive); |
Bartlomiej Zolnierkiewicz | 99ffbe0 | 2008-02-02 19:56:47 +0100 | [diff] [blame] | 671 | else |
| 672 | ide_dma_off(drive); |
| 673 | } |
| 674 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 675 | if ((drive->dev_flags & IDE_DFLAG_KEEP_SETTINGS) == 0) { |
| 676 | if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0) { |
| 677 | drive->dev_flags &= ~IDE_DFLAG_UNMASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | drive->io_32bit = 0; |
| 679 | } |
| 680 | return; |
| 681 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 683 | if (port_ops && port_ops->pre_reset) |
| 684 | port_ops->pre_reset(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | |
Suleiman Souhlal | 513daad | 2007-03-26 23:03:20 +0200 | [diff] [blame] | 686 | if (drive->current_speed != 0xff) |
| 687 | drive->desired_speed = drive->current_speed; |
| 688 | drive->current_speed = 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | } |
| 690 | |
| 691 | /* |
| 692 | * do_reset1() attempts to recover a confused drive by resetting it. |
| 693 | * Unfortunately, resetting a disk drive actually resets all devices on |
| 694 | * the same interface, so it can really be thought of as resetting the |
| 695 | * interface rather than resetting the drive. |
| 696 | * |
| 697 | * ATAPI devices have their own reset mechanism which allows them to be |
| 698 | * individually reset without clobbering other devices on the same interface. |
| 699 | * |
| 700 | * Unfortunately, the IDE interface does not generate an interrupt to let |
| 701 | * us know when the reset operation has finished, so we must poll for this. |
| 702 | * Equally poor, though, is the fact that this may a very long time to complete, |
| 703 | * (up to 30 seconds worstcase). So, instead of busy-waiting here for it, |
| 704 | * we set a timer to poll at 50ms intervals. |
| 705 | */ |
| 706 | static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) |
| 707 | { |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 708 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 709 | struct ide_io_ports *io_ports = &hwif->io_ports; |
| 710 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 711 | const struct ide_port_ops *port_ops; |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 712 | ide_drive_t *tdrive; |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 713 | unsigned long flags, timeout; |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 714 | int i; |
Elias Oltmanns | 4abdc6e | 2008-10-13 21:39:50 +0200 | [diff] [blame] | 715 | DEFINE_WAIT(wait); |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 716 | |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 717 | spin_lock_irqsave(&hwif->lock, flags); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 718 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | /* We must not reset with running handlers */ |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 720 | BUG_ON(hwif->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | |
| 722 | /* For an ATAPI device, first try an ATAPI SRST. */ |
| 723 | if (drive->media != ide_disk && !do_not_try_atapi) { |
| 724 | pre_reset(drive); |
| 725 | SELECT_DRIVE(drive); |
| 726 | udelay (20); |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 727 | tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET); |
Alan Cox | 68ad991 | 2005-06-27 15:24:25 -0700 | [diff] [blame] | 728 | ndelay(400); |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 729 | hwif->poll_timeout = jiffies + WAIT_WORSTCASE; |
| 730 | hwif->polling = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | __ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL); |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 732 | spin_unlock_irqrestore(&hwif->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | return ide_started; |
| 734 | } |
| 735 | |
Elias Oltmanns | 4abdc6e | 2008-10-13 21:39:50 +0200 | [diff] [blame] | 736 | /* We must not disturb devices in the IDE_DFLAG_PARKED state. */ |
| 737 | do { |
| 738 | unsigned long now; |
| 739 | |
| 740 | prepare_to_wait(&ide_park_wq, &wait, TASK_UNINTERRUPTIBLE); |
| 741 | timeout = jiffies; |
Bartlomiej Zolnierkiewicz | 7ed5b15 | 2009-03-24 23:22:41 +0100 | [diff] [blame] | 742 | ide_port_for_each_present_dev(i, tdrive, hwif) { |
| 743 | if ((tdrive->dev_flags & IDE_DFLAG_PARKED) && |
Elias Oltmanns | 4abdc6e | 2008-10-13 21:39:50 +0200 | [diff] [blame] | 744 | time_after(tdrive->sleep, timeout)) |
| 745 | timeout = tdrive->sleep; |
| 746 | } |
| 747 | |
| 748 | now = jiffies; |
| 749 | if (time_before_eq(timeout, now)) |
| 750 | break; |
| 751 | |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 752 | spin_unlock_irqrestore(&hwif->lock, flags); |
Elias Oltmanns | 4abdc6e | 2008-10-13 21:39:50 +0200 | [diff] [blame] | 753 | timeout = schedule_timeout_uninterruptible(timeout - now); |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 754 | spin_lock_irqsave(&hwif->lock, flags); |
Elias Oltmanns | 4abdc6e | 2008-10-13 21:39:50 +0200 | [diff] [blame] | 755 | } while (timeout); |
| 756 | finish_wait(&ide_park_wq, &wait); |
| 757 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | /* |
| 759 | * First, reset any device state data we were maintaining |
| 760 | * for any of the drives on this interface. |
| 761 | */ |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 762 | ide_port_for_each_dev(i, tdrive, hwif) |
| 763 | pre_reset(tdrive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 765 | if (io_ports->ctl_addr == 0) { |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 766 | spin_unlock_irqrestore(&hwif->lock, flags); |
Elias Oltmanns | 64a8f00 | 2008-07-16 20:33:48 +0200 | [diff] [blame] | 767 | ide_complete_drive_reset(drive, -ENXIO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | return ide_stopped; |
| 769 | } |
| 770 | |
| 771 | /* |
| 772 | * Note that we also set nIEN while resetting the device, |
| 773 | * to mask unwanted interrupts from the interface during the reset. |
| 774 | * However, due to the design of PC hardware, this will cause an |
| 775 | * immediate interrupt due to the edge transition it produces. |
| 776 | * This single interrupt gives us a "fast poll" for drives that |
| 777 | * recover from reset very quickly, saving us the first 50ms wait time. |
Bartlomiej Zolnierkiewicz | 6e6afb3 | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 778 | * |
| 779 | * TODO: add ->softreset method and stop abusing ->set_irq |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | */ |
| 781 | /* set SRST and nIEN */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 782 | tp_ops->set_irq(hwif, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | /* more than enough time */ |
| 784 | udelay(10); |
Bartlomiej Zolnierkiewicz | 6e6afb3 | 2008-07-23 19:55:52 +0200 | [diff] [blame] | 785 | /* clear SRST, leave nIEN (unless device is on the quirk list) */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 786 | tp_ops->set_irq(hwif, drive->quirk_list == 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | /* more than enough time */ |
| 788 | udelay(10); |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 789 | hwif->poll_timeout = jiffies + WAIT_WORSTCASE; |
| 790 | hwif->polling = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | __ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL); |
| 792 | |
| 793 | /* |
| 794 | * Some weird controller like resetting themselves to a strange |
| 795 | * state when the disks are reset this way. At least, the Winbond |
| 796 | * 553 documentation says that |
| 797 | */ |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 798 | port_ops = hwif->port_ops; |
| 799 | if (port_ops && port_ops->resetproc) |
| 800 | port_ops->resetproc(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 802 | spin_unlock_irqrestore(&hwif->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | return ide_started; |
| 804 | } |
| 805 | |
| 806 | /* |
| 807 | * ide_do_reset() is the entry point to the drive/interface reset code. |
| 808 | */ |
| 809 | |
| 810 | ide_startstop_t ide_do_reset (ide_drive_t *drive) |
| 811 | { |
| 812 | return do_reset1(drive, 0); |
| 813 | } |
| 814 | |
| 815 | EXPORT_SYMBOL(ide_do_reset); |
| 816 | |
| 817 | /* |
| 818 | * 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] | 819 | * to report a non-busy status, see comments in ide_probe_port(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | */ |
| 821 | int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout) |
| 822 | { |
| 823 | u8 stat = 0; |
| 824 | |
| 825 | while(timeout--) { |
| 826 | /* |
| 827 | * Turn this into a schedule() sleep once I'm sure |
| 828 | * about locking issues (2.5 work ?). |
| 829 | */ |
| 830 | mdelay(1); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 831 | stat = hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 832 | if ((stat & ATA_BUSY) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | return 0; |
| 834 | /* |
| 835 | * Assume a value of 0xff means nothing is connected to |
| 836 | * the interface and it doesn't implement the pull-down |
| 837 | * resistor on D7. |
| 838 | */ |
| 839 | if (stat == 0xff) |
| 840 | return -ENODEV; |
Ingo Molnar | 6842f8c | 2006-02-03 03:04:55 -0800 | [diff] [blame] | 841 | touch_softlockup_watchdog(); |
Michal Schmidt | 1e86240 | 2006-07-30 03:03:29 -0700 | [diff] [blame] | 842 | touch_nmi_watchdog(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | } |
| 844 | return -EBUSY; |
| 845 | } |