Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Bartlomiej Zolnierkiewicz | 59bca8c | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 2 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) |
| 3 | * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | /* |
| 7 | * Mostly written by Mark Lord <mlord@pobox.com> |
| 8 | * and Gadi Oxman <gadio@netvision.net.il> |
| 9 | * and Andre Hedrick <andre@linux-ide.org> |
| 10 | * |
| 11 | * See linux/MAINTAINERS for address of current maintainer. |
| 12 | * |
| 13 | * This is the IDE probe module, as evolved from hd.c and ide.c. |
| 14 | * |
Bartlomiej Zolnierkiewicz | bbe4d6d | 2007-12-12 23:32:00 +0100 | [diff] [blame] | 15 | * -- increase WAIT_PIDENTIFY to avoid CD-ROM locking at boot |
| 16 | * by Andrea Arcangeli |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/module.h> |
| 20 | #include <linux/types.h> |
| 21 | #include <linux/string.h> |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/timer.h> |
| 24 | #include <linux/mm.h> |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/major.h> |
| 27 | #include <linux/errno.h> |
| 28 | #include <linux/genhd.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/delay.h> |
| 31 | #include <linux/ide.h> |
| 32 | #include <linux/spinlock.h> |
| 33 | #include <linux/kmod.h> |
| 34 | #include <linux/pci.h> |
FUJITA Tomonori | dc81785 | 2007-10-23 09:29:58 +0200 | [diff] [blame] | 35 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
| 37 | #include <asm/byteorder.h> |
| 38 | #include <asm/irq.h> |
| 39 | #include <asm/uaccess.h> |
| 40 | #include <asm/io.h> |
| 41 | |
| 42 | /** |
| 43 | * generic_id - add a generic drive id |
| 44 | * @drive: drive to make an ID block for |
| 45 | * |
| 46 | * Add a fake id field to the drive we are passed. This allows |
| 47 | * use to skip a ton of NULL checks (which people always miss) |
| 48 | * and make drive properties unconditional outside of this file |
| 49 | */ |
| 50 | |
| 51 | static void generic_id(ide_drive_t *drive) |
| 52 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 53 | u16 *id = drive->id; |
| 54 | |
| 55 | id[ATA_ID_CUR_CYLS] = id[ATA_ID_CYLS] = drive->cyl; |
| 56 | id[ATA_ID_CUR_HEADS] = id[ATA_ID_HEADS] = drive->head; |
| 57 | id[ATA_ID_CUR_SECTORS] = id[ATA_ID_SECTORS] = drive->sect; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | static void ide_disk_init_chs(ide_drive_t *drive) |
| 61 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 62 | u16 *id = drive->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| 64 | /* Extract geometry if we did not already have one for the drive */ |
| 65 | if (!drive->cyl || !drive->head || !drive->sect) { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 66 | drive->cyl = drive->bios_cyl = id[ATA_ID_CYLS]; |
| 67 | drive->head = drive->bios_head = id[ATA_ID_HEADS]; |
| 68 | drive->sect = drive->bios_sect = id[ATA_ID_SECTORS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | } |
| 70 | |
| 71 | /* Handle logical geometry translation by the drive */ |
Bartlomiej Zolnierkiewicz | dd8f46f | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 72 | if (ata_id_current_chs_valid(id)) { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 73 | drive->cyl = id[ATA_ID_CUR_CYLS]; |
| 74 | drive->head = id[ATA_ID_CUR_HEADS]; |
| 75 | drive->sect = id[ATA_ID_CUR_SECTORS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | /* Use physical geometry if what we have still makes no sense */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 79 | if (drive->head > 16 && id[ATA_ID_HEADS] && id[ATA_ID_HEADS] <= 16) { |
| 80 | drive->cyl = id[ATA_ID_CYLS]; |
| 81 | drive->head = id[ATA_ID_HEADS]; |
| 82 | drive->sect = id[ATA_ID_SECTORS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | } |
| 84 | } |
| 85 | |
| 86 | static void ide_disk_init_mult_count(ide_drive_t *drive) |
| 87 | { |
Bartlomiej Zolnierkiewicz | 48fb268 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 88 | u16 *id = drive->id; |
| 89 | u8 max_multsect = id[ATA_ID_MAX_MULTSECT] & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
Bartlomiej Zolnierkiewicz | 48fb268 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 91 | if (max_multsect) { |
Bartlomiej Zolnierkiewicz | 48fb268 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 92 | if ((max_multsect / 2) > 1) |
| 93 | id[ATA_ID_MULTSECT] = max_multsect | 0x100; |
| 94 | else |
| 95 | id[ATA_ID_MULTSECT] &= ~0x1ff; |
| 96 | |
| 97 | drive->mult_req = id[ATA_ID_MULTSECT] & 0xff; |
Bartlomiej Zolnierkiewicz | 7c51c17 | 2008-10-10 22:39:26 +0200 | [diff] [blame] | 98 | |
| 99 | if (drive->mult_req) |
Bartlomiej Zolnierkiewicz | df1f837 | 2008-10-10 22:39:18 +0200 | [diff] [blame] | 100 | drive->special.b.set_multmode = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | } |
| 102 | } |
| 103 | |
Bartlomiej Zolnierkiewicz | 24630dc | 2009-01-02 16:12:47 +0100 | [diff] [blame] | 104 | static void ide_classify_ata_dev(ide_drive_t *drive) |
| 105 | { |
| 106 | u16 *id = drive->id; |
| 107 | char *m = (char *)&id[ATA_ID_PROD]; |
| 108 | int is_cfa = ata_id_is_cfa(id); |
| 109 | |
| 110 | /* CF devices are *not* removable in Linux definition of the term */ |
| 111 | if (is_cfa == 0 && (id[ATA_ID_CONFIG] & (1 << 7))) |
| 112 | drive->dev_flags |= IDE_DFLAG_REMOVABLE; |
| 113 | |
| 114 | drive->media = ide_disk; |
| 115 | |
| 116 | if (!ata_id_has_unload(drive->id)) |
| 117 | drive->dev_flags |= IDE_DFLAG_NO_UNLOAD; |
| 118 | |
| 119 | printk(KERN_INFO "%s: %s, %s DISK drive\n", drive->name, m, |
| 120 | is_cfa ? "CFA" : "ATA"); |
| 121 | } |
| 122 | |
| 123 | static void ide_classify_atapi_dev(ide_drive_t *drive) |
| 124 | { |
| 125 | u16 *id = drive->id; |
| 126 | char *m = (char *)&id[ATA_ID_PROD]; |
| 127 | u8 type = (id[ATA_ID_CONFIG] >> 8) & 0x1f; |
| 128 | |
| 129 | printk(KERN_INFO "%s: %s, ATAPI ", drive->name, m); |
| 130 | switch (type) { |
| 131 | case ide_floppy: |
| 132 | if (!strstr(m, "CD-ROM")) { |
| 133 | if (!strstr(m, "oppy") && |
| 134 | !strstr(m, "poyp") && |
| 135 | !strstr(m, "ZIP")) |
| 136 | printk(KERN_CONT "cdrom or floppy?, assuming "); |
| 137 | if (drive->media != ide_cdrom) { |
| 138 | printk(KERN_CONT "FLOPPY"); |
| 139 | drive->dev_flags |= IDE_DFLAG_REMOVABLE; |
| 140 | break; |
| 141 | } |
| 142 | } |
| 143 | /* Early cdrom models used zero */ |
| 144 | type = ide_cdrom; |
| 145 | case ide_cdrom: |
| 146 | drive->dev_flags |= IDE_DFLAG_REMOVABLE; |
| 147 | #ifdef CONFIG_PPC |
| 148 | /* kludge for Apple PowerBook internal zip */ |
| 149 | if (!strstr(m, "CD-ROM") && strstr(m, "ZIP")) { |
| 150 | printk(KERN_CONT "FLOPPY"); |
| 151 | type = ide_floppy; |
| 152 | break; |
| 153 | } |
| 154 | #endif |
| 155 | printk(KERN_CONT "CD/DVD-ROM"); |
| 156 | break; |
| 157 | case ide_tape: |
| 158 | printk(KERN_CONT "TAPE"); |
| 159 | break; |
| 160 | case ide_optical: |
| 161 | printk(KERN_CONT "OPTICAL"); |
| 162 | drive->dev_flags |= IDE_DFLAG_REMOVABLE; |
| 163 | break; |
| 164 | default: |
| 165 | printk(KERN_CONT "UNKNOWN (type %d)", type); |
| 166 | break; |
| 167 | } |
| 168 | |
| 169 | printk(KERN_CONT " drive\n"); |
| 170 | drive->media = type; |
| 171 | /* an ATAPI device ignores DRDY */ |
| 172 | drive->ready_stat = 0; |
| 173 | if (ata_id_cdb_intr(id)) |
| 174 | drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT; |
| 175 | drive->dev_flags |= IDE_DFLAG_DOORLOCKING; |
| 176 | /* we don't do head unloading on ATAPI devices */ |
| 177 | drive->dev_flags |= IDE_DFLAG_NO_UNLOAD; |
| 178 | } |
| 179 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | * do_identify - identify a drive |
| 182 | * @drive: drive to identify |
| 183 | * @cmd: command used |
| 184 | * |
| 185 | * Called when we have issued a drive identify command to |
| 186 | * read and parse the results. This function is run with |
| 187 | * interrupts disabled. |
| 188 | */ |
Bartlomiej Zolnierkiewicz | 047140a | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 189 | |
| 190 | static void do_identify(ide_drive_t *drive, u8 cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | { |
| 192 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 193 | u16 *id = drive->id; |
| 194 | char *m = (char *)&id[ATA_ID_PROD]; |
Bartlomiej Zolnierkiewicz | 94b9efd | 2008-12-29 20:27:38 +0100 | [diff] [blame] | 195 | unsigned long flags; |
Bartlomiej Zolnierkiewicz | 24630dc | 2009-01-02 16:12:47 +0100 | [diff] [blame] | 196 | int bswap = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
Bartlomiej Zolnierkiewicz | 94b9efd | 2008-12-29 20:27:38 +0100 | [diff] [blame] | 198 | /* local CPU only; some systems need this */ |
| 199 | local_irq_save(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | /* read 512 bytes of id info */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 201 | hwif->tp_ops->input_data(drive, NULL, id, SECTOR_SIZE); |
Bartlomiej Zolnierkiewicz | 94b9efd | 2008-12-29 20:27:38 +0100 | [diff] [blame] | 202 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 204 | drive->dev_flags |= IDE_DFLAG_ID_READ; |
Bartlomiej Zolnierkiewicz | 7b9f25b | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 205 | #ifdef DEBUG |
| 206 | printk(KERN_INFO "%s: dumping identify data\n", drive->name); |
| 207 | ide_dump_identify((u8 *)id); |
| 208 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | ide_fix_driveid(id); |
| 210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | /* |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 212 | * ATA_CMD_ID_ATA returns little-endian info, |
| 213 | * ATA_CMD_ID_ATAPI *usually* returns little-endian info. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 215 | if (cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 216 | if ((m[0] == 'N' && m[1] == 'E') || /* NEC */ |
| 217 | (m[0] == 'F' && m[1] == 'X') || /* Mitsumi */ |
| 218 | (m[0] == 'P' && m[1] == 'i')) /* Pioneer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | /* Vertos drives may still be weird */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 220 | bswap ^= 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 222 | |
| 223 | ide_fixstring(m, ATA_ID_PROD_LEN, bswap); |
| 224 | ide_fixstring((char *)&id[ATA_ID_FW_REV], ATA_ID_FW_REV_LEN, bswap); |
| 225 | ide_fixstring((char *)&id[ATA_ID_SERNO], ATA_ID_SERNO_LEN, bswap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
Tejun Heo | 699b052 | 2007-11-05 21:42:25 +0100 | [diff] [blame] | 227 | /* we depend on this a lot! */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 228 | m[ATA_ID_PROD_LEN - 1] = '\0'; |
Tejun Heo | 699b052 | 2007-11-05 21:42:25 +0100 | [diff] [blame] | 229 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 230 | if (strstr(m, "E X A B Y T E N E S T")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | goto err_misc; |
| 232 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 233 | drive->dev_flags |= IDE_DFLAG_PRESENT; |
| 234 | drive->dev_flags &= ~IDE_DFLAG_DEAD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
| 236 | /* |
| 237 | * Check for an ATAPI device |
| 238 | */ |
Bartlomiej Zolnierkiewicz | 24630dc | 2009-01-02 16:12:47 +0100 | [diff] [blame] | 239 | if (cmd == ATA_CMD_ID_ATAPI) |
| 240 | ide_classify_atapi_dev(drive); |
| 241 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | /* |
| 243 | * Not an ATAPI device: looks like a "regular" hard disk |
| 244 | */ |
Bartlomiej Zolnierkiewicz | 24630dc | 2009-01-02 16:12:47 +0100 | [diff] [blame] | 245 | ide_classify_ata_dev(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | err_misc: |
| 248 | kfree(id); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 249 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | /** |
| 253 | * actual_try_to_identify - send ata/atapi identify |
| 254 | * @drive: drive to identify |
| 255 | * @cmd: command to use |
| 256 | * |
| 257 | * try_to_identify() sends an ATA(PI) IDENTIFY request to a drive |
| 258 | * and waits for a response. It also monitors irqs while this is |
| 259 | * happening, in hope of automatically determining which one is |
| 260 | * being used by the interface. |
| 261 | * |
| 262 | * Returns: 0 device was identified |
| 263 | * 1 device timed-out (no response to identify request) |
| 264 | * 2 device aborted the command (refused to identify itself) |
| 265 | */ |
| 266 | |
| 267 | static int actual_try_to_identify (ide_drive_t *drive, u8 cmd) |
| 268 | { |
| 269 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 270 | struct ide_io_ports *io_ports = &hwif->io_ports; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 271 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 272 | int use_altstatus = 0, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | unsigned long timeout; |
| 274 | u8 s = 0, a = 0; |
| 275 | |
| 276 | /* take a deep breath */ |
| 277 | msleep(50); |
| 278 | |
Bartlomiej Zolnierkiewicz | 6636487 | 2008-12-02 20:40:03 +0100 | [diff] [blame] | 279 | if (io_ports->ctl_addr && |
| 280 | (hwif->host_flags & IDE_HFLAG_BROKEN_ALTSTATUS) == 0) { |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 281 | a = tp_ops->read_altstatus(hwif); |
| 282 | s = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 283 | if ((a ^ s) & ~ATA_IDX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | /* ancient Seagate drives, broken interfaces */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 285 | printk(KERN_INFO "%s: probing with STATUS(0x%02x) " |
| 286 | "instead of ALTSTATUS(0x%02x)\n", |
| 287 | drive->name, s, a); |
| 288 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | /* use non-intrusive polling */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 290 | use_altstatus = 1; |
| 291 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
| 293 | /* set features register for atapi |
| 294 | * identify command to be sure of reply |
| 295 | */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 296 | if (cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 4e65837 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 297 | ide_task_t task; |
| 298 | |
| 299 | memset(&task, 0, sizeof(task)); |
| 300 | /* disable DMA & overlap */ |
| 301 | task.tf_flags = IDE_TFLAG_OUT_FEATURE; |
| 302 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 303 | tp_ops->tf_load(drive, &task); |
Bartlomiej Zolnierkiewicz | 4e65837 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 304 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
| 306 | /* ask drive for ID */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 307 | tp_ops->exec_command(hwif, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 309 | timeout = ((cmd == ATA_CMD_ID_ATA) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2; |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 310 | |
| 311 | if (ide_busy_sleep(hwif, timeout, use_altstatus)) |
| 312 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 314 | /* wait for IRQ and ATA_DRQ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | msleep(50); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 316 | s = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 317 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 318 | if (OK_STAT(s, ATA_DRQ, BAD_R_STAT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | /* drive returned ID */ |
| 320 | do_identify(drive, cmd); |
| 321 | /* drive responded with ID */ |
| 322 | rc = 0; |
| 323 | /* clear drive IRQ */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 324 | (void)tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | } else { |
| 326 | /* drive refused ID */ |
| 327 | rc = 2; |
| 328 | } |
| 329 | return rc; |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * try_to_identify - try to identify a drive |
| 334 | * @drive: drive to probe |
| 335 | * @cmd: command to use |
| 336 | * |
| 337 | * Issue the identify command and then do IRQ probing to |
| 338 | * complete the identification when needed by finding the |
| 339 | * IRQ the drive is attached to |
| 340 | */ |
| 341 | |
| 342 | static int try_to_identify (ide_drive_t *drive, u8 cmd) |
| 343 | { |
| 344 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 345 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | int retval; |
| 347 | int autoprobe = 0; |
| 348 | unsigned long cookie = 0; |
| 349 | |
| 350 | /* |
| 351 | * Disable device irq unless we need to |
| 352 | * probe for it. Otherwise we'll get spurious |
| 353 | * interrupts during the identify-phase that |
| 354 | * the irq handler isn't expecting. |
| 355 | */ |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 356 | if (hwif->io_ports.ctl_addr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | if (!hwif->irq) { |
| 358 | autoprobe = 1; |
| 359 | cookie = probe_irq_on(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | } |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 361 | tp_ops->set_irq(hwif, autoprobe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | retval = actual_try_to_identify(drive, cmd); |
| 365 | |
| 366 | if (autoprobe) { |
| 367 | int irq; |
Bartlomiej Zolnierkiewicz | 81ca691 | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 368 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 369 | tp_ops->set_irq(hwif, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | /* clear drive IRQ */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 371 | (void)tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | udelay(5); |
| 373 | irq = probe_irq_off(cookie); |
| 374 | if (!hwif->irq) { |
| 375 | if (irq > 0) { |
| 376 | hwif->irq = irq; |
| 377 | } else { |
| 378 | /* Mmmm.. multiple IRQs.. |
| 379 | * don't know which was ours |
| 380 | */ |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 381 | printk(KERN_ERR "%s: IRQ probe failed (0x%lx)\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | drive->name, cookie); |
| 383 | } |
| 384 | } |
| 385 | } |
| 386 | return retval; |
| 387 | } |
| 388 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 389 | int ide_busy_sleep(ide_hwif_t *hwif, unsigned long timeout, int altstatus) |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 390 | { |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 391 | u8 stat; |
| 392 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 393 | timeout += jiffies; |
| 394 | |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 395 | do { |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 396 | msleep(50); /* give drive a breather */ |
| 397 | stat = altstatus ? hwif->tp_ops->read_altstatus(hwif) |
| 398 | : hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 399 | if ((stat & ATA_BUSY) == 0) |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 400 | return 0; |
| 401 | } while (time_before(jiffies, timeout)); |
| 402 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 403 | return 1; /* drive timed-out */ |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 404 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 406 | static u8 ide_read_device(ide_drive_t *drive) |
| 407 | { |
| 408 | ide_task_t task; |
| 409 | |
| 410 | memset(&task, 0, sizeof(task)); |
| 411 | task.tf_flags = IDE_TFLAG_IN_DEVICE; |
| 412 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 413 | drive->hwif->tp_ops->tf_read(drive, &task); |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 414 | |
| 415 | return task.tf.device; |
| 416 | } |
| 417 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | /** |
| 419 | * do_probe - probe an IDE device |
| 420 | * @drive: drive to probe |
| 421 | * @cmd: command to use |
| 422 | * |
| 423 | * do_probe() has the difficult job of finding a drive if it exists, |
| 424 | * without getting hung up if it doesn't exist, without trampling on |
| 425 | * ethernet cards, and without leaving any IRQs dangling to haunt us later. |
| 426 | * |
| 427 | * If a drive is "known" to exist (from CMOS or kernel parameters), |
| 428 | * but does not respond right away, the probe will "hang in there" |
| 429 | * for the maximum wait time (about 30 seconds), otherwise it will |
| 430 | * exit much more quickly. |
| 431 | * |
| 432 | * Returns: 0 device was identified |
| 433 | * 1 device timed-out (no response to identify request) |
| 434 | * 2 device aborted the command (refused to identify itself) |
| 435 | * 3 bad status from device (possible for ATAPI drives) |
| 436 | * 4 probe was not attempted because failure was obvious |
| 437 | */ |
| 438 | |
| 439 | static int do_probe (ide_drive_t *drive, u8 cmd) |
| 440 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 442 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 443 | int rc; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 444 | u8 present = !!(drive->dev_flags & IDE_DFLAG_PRESENT), stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 446 | /* avoid waiting for inappropriate probes */ |
| 447 | if (present && drive->media != ide_disk && cmd == ATA_CMD_ID_ATA) |
| 448 | return 4; |
| 449 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | #ifdef DEBUG |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 451 | printk(KERN_INFO "probing for %s: present=%d, media=%d, probetype=%s\n", |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 452 | drive->name, present, drive->media, |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 453 | (cmd == ATA_CMD_ID_ATA) ? "ATA" : "ATAPI"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | #endif |
| 455 | |
| 456 | /* needed for some systems |
| 457 | * (e.g. crw9624 as drive0 with disk as slave) |
| 458 | */ |
| 459 | msleep(50); |
| 460 | SELECT_DRIVE(drive); |
| 461 | msleep(50); |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 462 | |
Bartlomiej Zolnierkiewicz | 7f612f2 | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 463 | if (ide_read_device(drive) != drive->select && present == 0) { |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 464 | if (drive->dn & 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | /* exit with drive0 selected */ |
| 466 | SELECT_DRIVE(&hwif->drives[0]); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 467 | /* allow ATA_BUSY to assert & clear */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | msleep(50); |
| 469 | } |
| 470 | /* no i/f present: mmm.. this should be a 4 -ml */ |
| 471 | return 3; |
| 472 | } |
| 473 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 474 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 475 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 476 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY) || |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 477 | present || cmd == ATA_CMD_ID_ATAPI) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | /* send cmd and wait */ |
| 479 | if ((rc = try_to_identify(drive, cmd))) { |
| 480 | /* failed: try again */ |
| 481 | rc = try_to_identify(drive,cmd); |
| 482 | } |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 483 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 484 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 485 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 486 | if (stat == (ATA_BUSY | ATA_DRDY)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | return 4; |
| 488 | |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 489 | if (rc == 1 && cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 490 | printk(KERN_ERR "%s: no response (status = 0x%02x), " |
| 491 | "resetting drive\n", drive->name, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | msleep(50); |
Bartlomiej Zolnierkiewicz | e81a3bd | 2008-07-15 21:21:48 +0200 | [diff] [blame] | 493 | SELECT_DRIVE(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | msleep(50); |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 495 | tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET); |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 496 | (void)ide_busy_sleep(hwif, WAIT_WORSTCASE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | rc = try_to_identify(drive, cmd); |
| 498 | } |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 499 | |
| 500 | /* ensure drive IRQ is clear */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 501 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 502 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | if (rc == 1) |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 504 | printk(KERN_ERR "%s: no response (status = 0x%02x)\n", |
| 505 | drive->name, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | } else { |
| 507 | /* not present or maybe ATAPI */ |
| 508 | rc = 3; |
| 509 | } |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 510 | if (drive->dn & 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | /* exit with drive0 selected */ |
| 512 | SELECT_DRIVE(&hwif->drives[0]); |
| 513 | msleep(50); |
| 514 | /* ensure drive irq is clear */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 515 | (void)tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | } |
| 517 | return rc; |
| 518 | } |
| 519 | |
| 520 | /* |
| 521 | * |
| 522 | */ |
| 523 | static void enable_nest (ide_drive_t *drive) |
| 524 | { |
| 525 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 526 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 527 | u8 stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 529 | printk(KERN_INFO "%s: enabling %s -- ", |
| 530 | hwif->name, (char *)&drive->id[ATA_ID_PROD]); |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 531 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | SELECT_DRIVE(drive); |
| 533 | msleep(50); |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 534 | tp_ops->exec_command(hwif, ATA_EXABYTE_ENABLE_NEST); |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 535 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 536 | if (ide_busy_sleep(hwif, WAIT_WORSTCASE, 0)) { |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 537 | printk(KERN_CONT "failed (timeout)\n"); |
| 538 | return; |
| 539 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
| 541 | msleep(50); |
| 542 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 543 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 544 | |
| 545 | if (!OK_STAT(stat, 0, BAD_STAT)) |
| 546 | printk(KERN_CONT "failed (status = 0x%02x)\n", stat); |
| 547 | else |
| 548 | printk(KERN_CONT "success\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | } |
| 550 | |
| 551 | /** |
| 552 | * probe_for_drives - upper level drive probe |
| 553 | * @drive: drive to probe for |
| 554 | * |
| 555 | * probe_for_drive() tests for existence of a given drive using do_probe() |
| 556 | * and presents things to the user as needed. |
| 557 | * |
| 558 | * Returns: 0 no device was found |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 559 | * 1 device was found |
| 560 | * (note: IDE_DFLAG_PRESENT might still be not set) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | */ |
Bartlomiej Zolnierkiewicz | 047140a | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 562 | |
| 563 | static u8 probe_for_drive(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 565 | char *m; |
| 566 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | /* |
| 568 | * In order to keep things simple we have an id |
| 569 | * block for all drives at all times. If the device |
| 570 | * is pre ATA or refuses ATA/ATAPI identify we |
| 571 | * will add faked data to this. |
| 572 | * |
| 573 | * Also note that 0 everywhere means "can't do X" |
| 574 | */ |
| 575 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 576 | drive->dev_flags &= ~IDE_DFLAG_ID_READ; |
| 577 | |
Bartlomiej Zolnierkiewicz | 151a670 | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 578 | drive->id = kzalloc(SECTOR_SIZE, GFP_KERNEL); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 579 | if (drive->id == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | printk(KERN_ERR "ide: out of memory for id data.\n"); |
| 581 | return 0; |
| 582 | } |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 583 | |
| 584 | m = (char *)&drive->id[ATA_ID_PROD]; |
| 585 | strcpy(m, "UNKNOWN"); |
| 586 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | /* skip probing? */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 588 | if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0) { |
Bartlomiej Zolnierkiewicz | c36a7e9 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 589 | retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | /* if !(success||timed-out) */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 591 | if (do_probe(drive, ATA_CMD_ID_ATA) >= 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | /* look for ATAPI device */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 593 | (void)do_probe(drive, ATA_CMD_ID_ATAPI); |
Bartlomiej Zolnierkiewicz | c36a7e9 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 594 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 595 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | /* drive not found */ |
| 597 | return 0; |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 598 | |
Bartlomiej Zolnierkiewicz | c36a7e9 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 599 | if (strstr(m, "E X A B Y T E N E S T")) { |
Alan Cox | 7859557 | 2007-07-03 22:28:35 +0200 | [diff] [blame] | 600 | enable_nest(drive); |
Bartlomiej Zolnierkiewicz | c36a7e9 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 601 | goto retry; |
| 602 | } |
| 603 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | /* identification failed? */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 605 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | if (drive->media == ide_disk) { |
| 607 | printk(KERN_INFO "%s: non-IDE drive, CHS=%d/%d/%d\n", |
| 608 | drive->name, drive->cyl, |
| 609 | drive->head, drive->sect); |
| 610 | } else if (drive->media == ide_cdrom) { |
| 611 | printk(KERN_INFO "%s: ATAPI cdrom (?)\n", drive->name); |
| 612 | } else { |
| 613 | /* nuke it */ |
| 614 | printk(KERN_WARNING "%s: Unknown device on bus refused identification. Ignoring.\n", drive->name); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 615 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | } |
| 617 | } |
| 618 | /* drive was found */ |
| 619 | } |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 620 | |
| 621 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | return 0; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 623 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | /* The drive wasn't being helpful. Add generic info only */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 625 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | generic_id(drive); |
| 627 | return 1; |
| 628 | } |
| 629 | |
| 630 | if (drive->media == ide_disk) { |
| 631 | ide_disk_init_chs(drive); |
| 632 | ide_disk_init_mult_count(drive); |
| 633 | } |
| 634 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 635 | return !!(drive->dev_flags & IDE_DFLAG_PRESENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | } |
| 637 | |
Pavel Machek | fc41069 | 2008-07-23 19:56:02 +0200 | [diff] [blame] | 638 | static void hwif_release_dev(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | { |
| 640 | ide_hwif_t *hwif = container_of(dev, ide_hwif_t, gendev); |
| 641 | |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 642 | complete(&hwif->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | } |
| 644 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 645 | static int ide_register_port(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | { |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 647 | int ret; |
| 648 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | /* register with global device tree */ |
Kay Sievers | dc09c78 | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 650 | dev_set_name(&hwif->gendev, hwif->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | hwif->gendev.driver_data = hwif; |
Bartlomiej Zolnierkiewicz | 96d4094 | 2009-01-02 16:12:47 +0100 | [diff] [blame] | 652 | hwif->gendev.parent = hwif->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | hwif->gendev.release = hwif_release_dev; |
Bartlomiej Zolnierkiewicz | 96d4094 | 2009-01-02 16:12:47 +0100 | [diff] [blame] | 654 | |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 655 | ret = device_register(&hwif->gendev); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 656 | if (ret < 0) { |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 657 | printk(KERN_WARNING "IDE: %s: device_register error: %d\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 658 | __func__, ret); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 659 | goto out; |
| 660 | } |
| 661 | |
Greg Kroah-Hartman | 3ee074b | 2008-07-21 20:03:34 -0700 | [diff] [blame] | 662 | hwif->portdev = device_create(ide_port_class, &hwif->gendev, |
| 663 | MKDEV(0, 0), hwif, hwif->name); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 664 | if (IS_ERR(hwif->portdev)) { |
| 665 | ret = PTR_ERR(hwif->portdev); |
| 666 | device_unregister(&hwif->gendev); |
| 667 | } |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 668 | out: |
| 669 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | } |
| 671 | |
Bartlomiej Zolnierkiewicz | c860a8f | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 672 | /** |
| 673 | * ide_port_wait_ready - wait for port to become ready |
| 674 | * @hwif: IDE port |
| 675 | * |
| 676 | * This is needed on some PPCs and a bunch of BIOS-less embedded |
| 677 | * platforms. Typical cases are: |
| 678 | * |
| 679 | * - The firmware hard reset the disk before booting the kernel, |
| 680 | * the drive is still doing it's poweron-reset sequence, that |
| 681 | * can take up to 30 seconds. |
| 682 | * |
| 683 | * - The firmware does nothing (or no firmware), the device is |
| 684 | * still in POST state (same as above actually). |
| 685 | * |
| 686 | * - Some CD/DVD/Writer combo drives tend to drive the bus during |
| 687 | * their reset sequence even when they are non-selected slave |
| 688 | * devices, thus preventing discovery of the main HD. |
| 689 | * |
| 690 | * Doing this wait-for-non-busy should not harm any existing |
| 691 | * configuration and fix some issues like the above. |
| 692 | * |
| 693 | * BenH. |
| 694 | * |
| 695 | * Returns 0 on success, error code (< 0) otherwise. |
| 696 | */ |
| 697 | |
| 698 | static int ide_port_wait_ready(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | { |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 700 | int unit, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
| 702 | printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name); |
| 703 | |
| 704 | /* Let HW settle down a bit from whatever init state we |
| 705 | * come from */ |
| 706 | mdelay(2); |
| 707 | |
| 708 | /* Wait for BSY bit to go away, spec timeout is 30 seconds, |
| 709 | * I know of at least one disk who takes 31 seconds, I use 35 |
| 710 | * here to be safe |
| 711 | */ |
| 712 | rc = ide_wait_not_busy(hwif, 35000); |
| 713 | if (rc) |
| 714 | return rc; |
| 715 | |
| 716 | /* Now make sure both master & slave are ready */ |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 717 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
| 718 | ide_drive_t *drive = &hwif->drives[unit]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 720 | /* Ignore disks that we will not probe for later. */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 721 | if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 || |
| 722 | (drive->dev_flags & IDE_DFLAG_PRESENT)) { |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 723 | SELECT_DRIVE(drive); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 724 | hwif->tp_ops->set_irq(hwif, 1); |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 725 | mdelay(2); |
| 726 | rc = ide_wait_not_busy(hwif, 35000); |
| 727 | if (rc) |
| 728 | goto out; |
| 729 | } else |
| 730 | printk(KERN_DEBUG "%s: ide_wait_not_busy() skipped\n", |
| 731 | drive->name); |
| 732 | } |
| 733 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | /* Exit function with master reselected (let's be sane) */ |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 735 | if (unit) |
| 736 | SELECT_DRIVE(&hwif->drives[0]); |
| 737 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | return rc; |
| 739 | } |
| 740 | |
| 741 | /** |
| 742 | * ide_undecoded_slave - look for bad CF adapters |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 743 | * @dev1: slave device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | * |
| 745 | * Analyse the drives on the interface and attempt to decide if we |
| 746 | * have the same drive viewed twice. This occurs with crap CF adapters |
| 747 | * and PCMCIA sometimes. |
| 748 | */ |
| 749 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 750 | void ide_undecoded_slave(ide_drive_t *dev1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 752 | ide_drive_t *dev0 = &dev1->hwif->drives[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 754 | if ((dev1->dn & 1) == 0 || (dev0->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | return; |
| 756 | |
| 757 | /* If the models don't match they are not the same product */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 758 | if (strcmp((char *)&dev0->id[ATA_ID_PROD], |
| 759 | (char *)&dev1->id[ATA_ID_PROD])) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | return; |
| 761 | |
| 762 | /* Serial numbers do not match */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 763 | if (strncmp((char *)&dev0->id[ATA_ID_SERNO], |
| 764 | (char *)&dev1->id[ATA_ID_SERNO], ATA_ID_SERNO_LEN)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | return; |
| 766 | |
| 767 | /* No serial number, thankfully very rare for CF */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 768 | if (*(char *)&dev0->id[ATA_ID_SERNO] == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | return; |
| 770 | |
| 771 | /* Appears to be an IDE flash adapter with decode bugs */ |
| 772 | printk(KERN_WARNING "ide-probe: ignoring undecoded slave\n"); |
| 773 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 774 | dev1->dev_flags &= ~IDE_DFLAG_PRESENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | EXPORT_SYMBOL_GPL(ide_undecoded_slave); |
| 778 | |
Bartlomiej Zolnierkiewicz | 9d50152 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 779 | static int ide_probe_port(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | unsigned long flags; |
| 782 | unsigned int irqd; |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 783 | int unit, rc = -ENODEV; |
| 784 | |
| 785 | BUG_ON(hwif->present); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 787 | if ((hwif->drives[0].dev_flags & IDE_DFLAG_NOPROBE) && |
| 788 | (hwif->drives[1].dev_flags & IDE_DFLAG_NOPROBE)) |
Bartlomiej Zolnierkiewicz | 9d50152 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 789 | return -EACCES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | /* |
| 792 | * We must always disable IRQ, as probe_for_drive will assert IRQ, but |
| 793 | * we'll install our IRQ driver much later... |
| 794 | */ |
| 795 | irqd = hwif->irq; |
| 796 | if (irqd) |
| 797 | disable_irq(hwif->irq); |
| 798 | |
| 799 | local_irq_set(flags); |
| 800 | |
Bartlomiej Zolnierkiewicz | c860a8f | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 801 | if (ide_port_wait_ready(hwif) == -EBUSY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name); |
| 803 | |
| 804 | /* |
Bartlomiej Zolnierkiewicz | f367bed | 2008-03-29 19:48:21 +0100 | [diff] [blame] | 805 | * Second drive should only exist if first drive was found, |
| 806 | * but a lot of cdrom drives are configured as single slaves. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | */ |
Bartlomiej Zolnierkiewicz | f367bed | 2008-03-29 19:48:21 +0100 | [diff] [blame] | 808 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | ide_drive_t *drive = &hwif->drives[unit]; |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 810 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | (void) probe_for_drive(drive); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 812 | if (drive->dev_flags & IDE_DFLAG_PRESENT) |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 813 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | } |
Bartlomiej Zolnierkiewicz | e460a59 | 2008-04-27 15:38:24 +0200 | [diff] [blame] | 815 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | local_irq_restore(flags); |
Bartlomiej Zolnierkiewicz | e460a59 | 2008-04-27 15:38:24 +0200 | [diff] [blame] | 817 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | /* |
| 819 | * Use cached IRQ number. It might be (and is...) changed by probe |
| 820 | * code above |
| 821 | */ |
| 822 | if (irqd) |
| 823 | enable_irq(irqd); |
| 824 | |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 825 | return rc; |
Bartlomiej Zolnierkiewicz | e84e7ea | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 826 | } |
| 827 | |
| 828 | static void ide_port_tune_devices(ide_hwif_t *hwif) |
| 829 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 830 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Bartlomiej Zolnierkiewicz | e84e7ea | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 831 | int unit; |
| 832 | |
Bartlomiej Zolnierkiewicz | f01393e | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 833 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
| 834 | ide_drive_t *drive = &hwif->drives[unit]; |
| 835 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 836 | if (drive->dev_flags & IDE_DFLAG_PRESENT) { |
| 837 | if (port_ops && port_ops->quirkproc) |
| 838 | port_ops->quirkproc(drive); |
| 839 | } |
Bartlomiej Zolnierkiewicz | f01393e | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 840 | } |
Bartlomiej Zolnierkiewicz | 0380dad | 2007-06-08 15:14:29 +0200 | [diff] [blame] | 841 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| 843 | ide_drive_t *drive = &hwif->drives[unit]; |
| 844 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 845 | if (drive->dev_flags & IDE_DFLAG_PRESENT) { |
Bartlomiej Zolnierkiewicz | 207daea | 2008-04-27 15:38:29 +0200 | [diff] [blame] | 846 | ide_set_max_pio(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 848 | drive->dev_flags |= IDE_DFLAG_NICE1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 850 | if (hwif->dma_ops) |
Bartlomiej Zolnierkiewicz | 8c0697c | 2007-10-16 22:29:58 +0200 | [diff] [blame] | 851 | ide_set_dma(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | } |
| 853 | } |
Kumar Gala | 208a08f | 2006-03-24 03:18:21 -0800 | [diff] [blame] | 854 | |
| 855 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| 856 | ide_drive_t *drive = &hwif->drives[unit]; |
| 857 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 858 | if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) || |
| 859 | drive->id[ATA_ID_DWORD_IO]) |
| 860 | drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT; |
Kumar Gala | 208a08f | 2006-03-24 03:18:21 -0800 | [diff] [blame] | 861 | else |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 862 | drive->dev_flags &= ~IDE_DFLAG_NO_IO_32BIT; |
Kumar Gala | 208a08f | 2006-03-24 03:18:21 -0800 | [diff] [blame] | 863 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | } |
| 865 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | * init request queue |
| 868 | */ |
| 869 | static int ide_init_queue(ide_drive_t *drive) |
| 870 | { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 871 | struct request_queue *q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | ide_hwif_t *hwif = HWIF(drive); |
| 873 | int max_sectors = 256; |
| 874 | int max_sg_entries = PRD_ENTRIES; |
| 875 | |
| 876 | /* |
| 877 | * Our default set up assumes the normal IDE case, |
| 878 | * that is 64K segmenting, standard PRD setup |
| 879 | * and LBA28. Some drivers then impose their own |
| 880 | * limits and LBA48 we could raise it but as yet |
| 881 | * do not. |
| 882 | */ |
Christoph Lameter | 1946089 | 2005-06-23 00:08:19 -0700 | [diff] [blame] | 883 | |
Bartlomiej Zolnierkiewicz | 201bffa | 2009-01-02 16:12:50 +0100 | [diff] [blame] | 884 | q = blk_init_queue_node(do_ide_request, NULL, hwif_to_node(hwif)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | if (!q) |
| 886 | return 1; |
| 887 | |
| 888 | q->queuedata = drive; |
| 889 | blk_queue_segment_boundary(q, 0xffff); |
| 890 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | if (hwif->rqsize < max_sectors) |
| 892 | max_sectors = hwif->rqsize; |
| 893 | blk_queue_max_sectors(q, max_sectors); |
| 894 | |
| 895 | #ifdef CONFIG_PCI |
| 896 | /* When we have an IOMMU, we may have a problem where pci_map_sg() |
| 897 | * creates segments that don't completely match our boundary |
| 898 | * requirements and thus need to be broken up again. Because it |
| 899 | * doesn't align properly either, we may actually have to break up |
| 900 | * to more segments than what was we got in the first place, a max |
| 901 | * worst case is twice as many. |
| 902 | * This will be fixed once we teach pci_map_sg() about our boundary |
| 903 | * requirements, hopefully soon. *FIXME* |
| 904 | */ |
| 905 | if (!PCI_DMA_BUS_IS_PHYS) |
| 906 | max_sg_entries >>= 1; |
| 907 | #endif /* CONFIG_PCI */ |
| 908 | |
| 909 | blk_queue_max_hw_segments(q, max_sg_entries); |
| 910 | blk_queue_max_phys_segments(q, max_sg_entries); |
| 911 | |
| 912 | /* assign drive queue */ |
| 913 | drive->queue = q; |
| 914 | |
| 915 | /* needs drive->queue to be set */ |
| 916 | ide_toggle_bounce(drive, 1); |
| 917 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | return 0; |
| 919 | } |
| 920 | |
| 921 | /* |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 922 | * For any present drive: |
| 923 | * - allocate the block device queue |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 924 | */ |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 925 | static int ide_port_setup_devices(ide_hwif_t *hwif) |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 926 | { |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 927 | int i, j = 0; |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 928 | |
Bartlomiej Zolnierkiewicz | 26042d0 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 929 | mutex_lock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 930 | for (i = 0; i < MAX_DRIVES; i++) { |
| 931 | ide_drive_t *drive = &hwif->drives[i]; |
| 932 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 933 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 934 | continue; |
| 935 | |
| 936 | if (ide_init_queue(drive)) { |
| 937 | printk(KERN_ERR "ide: failed to init %s\n", |
| 938 | drive->name); |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 939 | kfree(drive->id); |
| 940 | drive->id = NULL; |
| 941 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 942 | continue; |
| 943 | } |
| 944 | |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 945 | j++; |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 946 | } |
Bartlomiej Zolnierkiewicz | 26042d0 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 947 | mutex_unlock(&ide_cfg_mtx); |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 948 | |
| 949 | return j; |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 950 | } |
| 951 | |
Bartlomiej Zolnierkiewicz | af1cbba | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 952 | static ide_hwif_t *ide_ports[MAX_HWIFS]; |
| 953 | |
Bartlomiej Zolnierkiewicz | 6059143 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 954 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
| 955 | { |
| 956 | ide_hwgroup_t *hwgroup = hwif->hwgroup; |
| 957 | |
Bartlomiej Zolnierkiewicz | af1cbba | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 958 | ide_ports[hwif->index] = NULL; |
| 959 | |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 960 | spin_lock_irq(&hwgroup->lock); |
Bartlomiej Zolnierkiewicz | efe0397 | 2009-01-06 17:20:49 +0100 | [diff] [blame^] | 961 | /* Free the hwgroup if we were the only member. */ |
| 962 | if (--hwgroup->port_count == 0) |
Bartlomiej Zolnierkiewicz | 6059143 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 963 | kfree(hwgroup); |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 964 | spin_unlock_irq(&hwgroup->lock); |
Bartlomiej Zolnierkiewicz | 6059143 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 965 | } |
| 966 | |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 967 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | * This routine sets up the irq for an ide interface, and creates a new |
| 969 | * hwgroup for the irq/hwif if none was previously assigned. |
| 970 | * |
| 971 | * Much of the code is for correctly detecting/handling irq sharing |
| 972 | * and irq serialization situations. This is somewhat complex because |
| 973 | * it handles static as well as dynamic (PCMCIA) IDE interfaces. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | */ |
| 975 | static int init_irq (ide_hwif_t *hwif) |
| 976 | { |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 977 | struct ide_io_ports *io_ports = &hwif->io_ports; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | unsigned int index; |
| 979 | ide_hwgroup_t *hwgroup; |
| 980 | ide_hwif_t *match = NULL; |
Bartlomiej Zolnierkiewicz | ae86afa | 2009-01-06 17:20:48 +0100 | [diff] [blame] | 981 | int sa = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 983 | mutex_lock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | hwif->hwgroup = NULL; |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 985 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | for (index = 0; index < MAX_HWIFS; index++) { |
Bartlomiej Zolnierkiewicz | af1cbba | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 987 | ide_hwif_t *h = ide_ports[index]; |
| 988 | |
| 989 | if (h && h->hwgroup) { /* scan only initialized ports */ |
Bartlomiej Zolnierkiewicz | 702c026 | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 990 | if (hwif->host->host_flags & IDE_HFLAG_SERIALIZE) { |
| 991 | if (hwif->host == h->host) |
| 992 | match = h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | } |
| 994 | } |
| 995 | } |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 996 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | /* |
| 998 | * If we are still without a hwgroup, then form a new one |
| 999 | */ |
| 1000 | if (match) { |
| 1001 | hwgroup = match->hwgroup; |
| 1002 | hwif->hwgroup = hwgroup; |
Bartlomiej Zolnierkiewicz | efe0397 | 2009-01-06 17:20:49 +0100 | [diff] [blame^] | 1003 | |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 1004 | spin_lock_irq(&hwgroup->lock); |
Bartlomiej Zolnierkiewicz | efe0397 | 2009-01-06 17:20:49 +0100 | [diff] [blame^] | 1005 | hwgroup->port_count++; |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 1006 | spin_unlock_irq(&hwgroup->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | } else { |
Bartlomiej Zolnierkiewicz | 422278e | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 1008 | hwgroup = kmalloc_node(sizeof(*hwgroup), GFP_KERNEL|__GFP_ZERO, |
| 1009 | hwif_to_node(hwif)); |
| 1010 | if (hwgroup == NULL) |
| 1011 | goto out_up; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 1013 | spin_lock_init(&hwgroup->lock); |
| 1014 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | hwif->hwgroup = hwgroup; |
Bartlomiej Zolnierkiewicz | efe0397 | 2009-01-06 17:20:49 +0100 | [diff] [blame^] | 1016 | |
| 1017 | hwgroup->port_count = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | init_timer(&hwgroup->timer); |
| 1020 | hwgroup->timer.function = &ide_timer_expiry; |
| 1021 | hwgroup->timer.data = (unsigned long) hwgroup; |
| 1022 | } |
| 1023 | |
Bartlomiej Zolnierkiewicz | af1cbba | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1024 | ide_ports[hwif->index] = hwif; |
| 1025 | |
Adrian Bunk | 7b89280 | 2008-02-06 01:36:29 -0800 | [diff] [blame] | 1026 | #if defined(__mc68000__) |
Bartlomiej Zolnierkiewicz | ae86afa | 2009-01-06 17:20:48 +0100 | [diff] [blame] | 1027 | sa = IRQF_SHARED; |
Bartlomiej Zolnierkiewicz | e1771e2 | 2008-02-11 00:32:15 +0100 | [diff] [blame] | 1028 | #endif /* __mc68000__ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | |
Bartlomiej Zolnierkiewicz | ae86afa | 2009-01-06 17:20:48 +0100 | [diff] [blame] | 1030 | if (hwif->chipset == ide_pci) |
| 1031 | sa = IRQF_SHARED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
Bartlomiej Zolnierkiewicz | ae86afa | 2009-01-06 17:20:48 +0100 | [diff] [blame] | 1033 | if (io_ports->ctl_addr) |
| 1034 | hwif->tp_ops->set_irq(hwif, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | |
Bartlomiej Zolnierkiewicz | ae86afa | 2009-01-06 17:20:48 +0100 | [diff] [blame] | 1036 | if (request_irq(hwif->irq, &ide_intr, sa, hwif->name, hwif)) |
| 1037 | goto out_unlink; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | |
Bartlomiej Zolnierkiewicz | 8a0e7e1 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1039 | if (!hwif->rqsize) { |
| 1040 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) || |
| 1041 | (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA)) |
| 1042 | hwif->rqsize = 256; |
| 1043 | else |
| 1044 | hwif->rqsize = 65536; |
| 1045 | } |
| 1046 | |
Adrian Bunk | 7b89280 | 2008-02-06 01:36:29 -0800 | [diff] [blame] | 1047 | #if !defined(__mc68000__) |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1048 | printk(KERN_INFO "%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif->name, |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 1049 | io_ports->data_addr, io_ports->status_addr, |
| 1050 | io_ports->ctl_addr, hwif->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | #else |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1052 | printk(KERN_INFO "%s at 0x%08lx on irq %d", hwif->name, |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 1053 | io_ports->data_addr, hwif->irq); |
Adrian Bunk | 7b89280 | 2008-02-06 01:36:29 -0800 | [diff] [blame] | 1054 | #endif /* __mc68000__ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | if (match) |
Bartlomiej Zolnierkiewicz | f58c1ab | 2008-12-29 20:27:33 +0100 | [diff] [blame] | 1056 | printk(KERN_CONT " (serialized with %s)", match->name); |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1057 | printk(KERN_CONT "\n"); |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1058 | |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 1059 | mutex_unlock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | return 0; |
| 1061 | out_unlink: |
Bartlomiej Zolnierkiewicz | fbd1308 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1062 | ide_remove_port_from_hwgroup(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | out_up: |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 1064 | mutex_unlock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | return 1; |
| 1066 | } |
| 1067 | |
| 1068 | static int ata_lock(dev_t dev, void *data) |
| 1069 | { |
| 1070 | /* FIXME: we want to pin hwif down */ |
| 1071 | return 0; |
| 1072 | } |
| 1073 | |
| 1074 | static struct kobject *ata_probe(dev_t dev, int *part, void *data) |
| 1075 | { |
| 1076 | ide_hwif_t *hwif = data; |
| 1077 | int unit = *part >> PARTN_BITS; |
| 1078 | ide_drive_t *drive = &hwif->drives[unit]; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1079 | |
| 1080 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | return NULL; |
| 1082 | |
| 1083 | if (drive->media == ide_disk) |
| 1084 | request_module("ide-disk"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | if (drive->media == ide_cdrom || drive->media == ide_optical) |
| 1086 | request_module("ide-cd"); |
| 1087 | if (drive->media == ide_tape) |
| 1088 | request_module("ide-tape"); |
| 1089 | if (drive->media == ide_floppy) |
| 1090 | request_module("ide-floppy"); |
| 1091 | |
| 1092 | return NULL; |
| 1093 | } |
| 1094 | |
| 1095 | static struct kobject *exact_match(dev_t dev, int *part, void *data) |
| 1096 | { |
| 1097 | struct gendisk *p = data; |
| 1098 | *part &= (1 << PARTN_BITS) - 1; |
Tejun Heo | ed9e198 | 2008-08-25 19:56:05 +0900 | [diff] [blame] | 1099 | return &disk_to_dev(p)->kobj; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | } |
| 1101 | |
| 1102 | static int exact_lock(dev_t dev, void *data) |
| 1103 | { |
| 1104 | struct gendisk *p = data; |
| 1105 | |
| 1106 | if (!get_disk(p)) |
| 1107 | return -1; |
| 1108 | return 0; |
| 1109 | } |
| 1110 | |
| 1111 | void ide_register_region(struct gendisk *disk) |
| 1112 | { |
| 1113 | blk_register_region(MKDEV(disk->major, disk->first_minor), |
| 1114 | disk->minors, NULL, exact_match, exact_lock, disk); |
| 1115 | } |
| 1116 | |
| 1117 | EXPORT_SYMBOL_GPL(ide_register_region); |
| 1118 | |
| 1119 | void ide_unregister_region(struct gendisk *disk) |
| 1120 | { |
| 1121 | blk_unregister_region(MKDEV(disk->major, disk->first_minor), |
| 1122 | disk->minors); |
| 1123 | } |
| 1124 | |
| 1125 | EXPORT_SYMBOL_GPL(ide_unregister_region); |
| 1126 | |
| 1127 | void ide_init_disk(struct gendisk *disk, ide_drive_t *drive) |
| 1128 | { |
| 1129 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 7f612f2 | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 1130 | unsigned int unit = drive->dn & 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | |
| 1132 | disk->major = hwif->major; |
| 1133 | disk->first_minor = unit << PARTN_BITS; |
| 1134 | sprintf(disk->disk_name, "hd%c", 'a' + hwif->index * MAX_DRIVES + unit); |
| 1135 | disk->queue = drive->queue; |
| 1136 | } |
| 1137 | |
| 1138 | EXPORT_SYMBOL_GPL(ide_init_disk); |
| 1139 | |
| 1140 | static void drive_release_dev (struct device *dev) |
| 1141 | { |
| 1142 | ide_drive_t *drive = container_of(dev, ide_drive_t, gendev); |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 1143 | ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | |
Bartlomiej Zolnierkiewicz | 5b0c4b3 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1145 | ide_proc_unregister_device(drive); |
| 1146 | |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 1147 | spin_lock_irq(&hwgroup->lock); |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1148 | kfree(drive->id); |
| 1149 | drive->id = NULL; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1150 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1151 | /* Messed up locking ... */ |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 1152 | spin_unlock_irq(&hwgroup->lock); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1153 | blk_cleanup_queue(drive->queue); |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 1154 | spin_lock_irq(&hwgroup->lock); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1155 | drive->queue = NULL; |
Bartlomiej Zolnierkiewicz | 2a2ca6a | 2008-12-29 20:27:31 +0100 | [diff] [blame] | 1156 | spin_unlock_irq(&hwgroup->lock); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1157 | |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 1158 | complete(&drive->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | } |
| 1160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | static int hwif_init(ide_hwif_t *hwif) |
| 1162 | { |
| 1163 | int old_irq; |
| 1164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | if (!hwif->irq) { |
Bartlomiej Zolnierkiewicz | a861beb | 2008-07-08 19:27:22 +0200 | [diff] [blame] | 1166 | hwif->irq = __ide_default_irq(hwif->io_ports.data_addr); |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 1167 | if (!hwif->irq) { |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1168 | printk(KERN_ERR "%s: disabled, no IRQ\n", hwif->name); |
Bartlomiej Zolnierkiewicz | 4853565 | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 1169 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | } |
| 1171 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | if (register_blkdev(hwif->major, hwif->name)) |
| 1174 | return 0; |
| 1175 | |
| 1176 | if (!hwif->sg_max_nents) |
| 1177 | hwif->sg_max_nents = PRD_ENTRIES; |
| 1178 | |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 1179 | hwif->sg_table = kmalloc(sizeof(struct scatterlist)*hwif->sg_max_nents, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | GFP_KERNEL); |
| 1181 | if (!hwif->sg_table) { |
| 1182 | printk(KERN_ERR "%s: unable to allocate SG table.\n", hwif->name); |
| 1183 | goto out; |
| 1184 | } |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 1185 | |
| 1186 | sg_init_table(hwif->sg_table, hwif->sg_max_nents); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | |
| 1188 | if (init_irq(hwif) == 0) |
| 1189 | goto done; |
| 1190 | |
| 1191 | old_irq = hwif->irq; |
| 1192 | /* |
| 1193 | * It failed to initialise. Find the default IRQ for |
| 1194 | * this port and try that. |
| 1195 | */ |
Bartlomiej Zolnierkiewicz | a861beb | 2008-07-08 19:27:22 +0200 | [diff] [blame] | 1196 | hwif->irq = __ide_default_irq(hwif->io_ports.data_addr); |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 1197 | if (!hwif->irq) { |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1198 | printk(KERN_ERR "%s: disabled, unable to get IRQ %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | hwif->name, old_irq); |
| 1200 | goto out; |
| 1201 | } |
| 1202 | if (init_irq(hwif)) { |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1203 | printk(KERN_ERR "%s: probed IRQ %d and default IRQ %d failed\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | hwif->name, old_irq, hwif->irq); |
| 1205 | goto out; |
| 1206 | } |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1207 | printk(KERN_WARNING "%s: probed IRQ %d failed, using default\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | hwif->name, hwif->irq); |
| 1209 | |
| 1210 | done: |
Bartlomiej Zolnierkiewicz | 3a4e7c9 | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 1211 | blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS, |
| 1212 | THIS_MODULE, ata_probe, ata_lock, hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | return 1; |
| 1214 | |
| 1215 | out: |
| 1216 | unregister_blkdev(hwif->major, hwif->name); |
| 1217 | return 0; |
| 1218 | } |
| 1219 | |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1220 | static void hwif_register_devices(ide_hwif_t *hwif) |
| 1221 | { |
| 1222 | unsigned int i; |
| 1223 | |
| 1224 | for (i = 0; i < MAX_DRIVES; i++) { |
| 1225 | ide_drive_t *drive = &hwif->drives[i]; |
Bartlomiej Zolnierkiewicz | c5d70cc | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1226 | struct device *dev = &drive->gendev; |
| 1227 | int ret; |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1228 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1229 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Bartlomiej Zolnierkiewicz | c5d70cc | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1230 | continue; |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1231 | |
Kay Sievers | dc09c78 | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 1232 | dev_set_name(dev, "%u.%u", hwif->index, i); |
Bartlomiej Zolnierkiewicz | c5d70cc | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1233 | dev->parent = &hwif->gendev; |
| 1234 | dev->bus = &ide_bus_type; |
| 1235 | dev->driver_data = drive; |
| 1236 | dev->release = drive_release_dev; |
| 1237 | |
| 1238 | ret = device_register(dev); |
| 1239 | if (ret < 0) |
| 1240 | printk(KERN_WARNING "IDE: %s: device_register error: " |
| 1241 | "%d\n", __func__, ret); |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1242 | } |
| 1243 | } |
| 1244 | |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1245 | static void ide_port_init_devices(ide_hwif_t *hwif) |
| 1246 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1247 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1248 | int i; |
| 1249 | |
| 1250 | for (i = 0; i < MAX_DRIVES; i++) { |
| 1251 | ide_drive_t *drive = &hwif->drives[i]; |
| 1252 | |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 1253 | drive->dn = i + hwif->channel * 2; |
| 1254 | |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1255 | if (hwif->host_flags & IDE_HFLAG_IO_32BIT) |
| 1256 | drive->io_32bit = 1; |
| 1257 | if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS) |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1258 | drive->dev_flags |= IDE_DFLAG_UNMASK; |
Bartlomiej Zolnierkiewicz | 807b90d | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 1259 | if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS) |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1260 | drive->dev_flags |= IDE_DFLAG_NO_UNMASK; |
Bartlomiej Zolnierkiewicz | 1f2cf8b | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 1261 | |
Bartlomiej Zolnierkiewicz | e6d95bd | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 1262 | if (port_ops && port_ops->init_dev) |
| 1263 | port_ops->init_dev(drive); |
| 1264 | } |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1265 | } |
| 1266 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1267 | static void ide_init_port(ide_hwif_t *hwif, unsigned int port, |
| 1268 | const struct ide_port_info *d) |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1269 | { |
Adrian Bunk | b769164 | 2008-06-10 20:56:36 +0200 | [diff] [blame] | 1270 | hwif->channel = port; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1271 | |
| 1272 | if (d->chipset) |
| 1273 | hwif->chipset = d->chipset; |
| 1274 | |
| 1275 | if (d->init_iops) |
| 1276 | d->init_iops(hwif); |
| 1277 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1278 | if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) || |
| 1279 | (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS)) |
| 1280 | hwif->irq = port ? 15 : 14; |
| 1281 | |
Bartlomiej Zolnierkiewicz | 23f8e4b | 2008-05-01 14:08:51 +0200 | [diff] [blame] | 1282 | /* ->host_flags may be set by ->init_iops (or even earlier...) */ |
| 1283 | hwif->host_flags |= d->host_flags; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1284 | hwif->pio_mask = d->pio_mask; |
| 1285 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 1286 | if (d->tp_ops) |
| 1287 | hwif->tp_ops = d->tp_ops; |
| 1288 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1289 | /* ->set_pio_mode for DTC2278 is currently limited to port 0 */ |
| 1290 | if (hwif->chipset != ide_dtc2278 || hwif->channel == 0) |
| 1291 | hwif->port_ops = d->port_ops; |
| 1292 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1293 | hwif->swdma_mask = d->swdma_mask; |
| 1294 | hwif->mwdma_mask = d->mwdma_mask; |
| 1295 | hwif->ultra_mask = d->udma_mask; |
| 1296 | |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1297 | if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) { |
| 1298 | int rc; |
| 1299 | |
| 1300 | if (d->init_dma) |
| 1301 | rc = d->init_dma(hwif, d); |
| 1302 | else |
| 1303 | rc = ide_hwif_setup_dma(hwif, d); |
| 1304 | |
| 1305 | if (rc < 0) { |
| 1306 | printk(KERN_INFO "%s: DMA disabled\n", hwif->name); |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 1307 | hwif->dma_base = 0; |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1308 | hwif->swdma_mask = 0; |
| 1309 | hwif->mwdma_mask = 0; |
| 1310 | hwif->ultra_mask = 0; |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 1311 | } else if (d->dma_ops) |
| 1312 | hwif->dma_ops = d->dma_ops; |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1313 | } |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1314 | |
Bartlomiej Zolnierkiewicz | 1024c5f | 2008-05-04 17:03:41 +0200 | [diff] [blame] | 1315 | if ((d->host_flags & IDE_HFLAG_SERIALIZE) || |
Bartlomiej Zolnierkiewicz | 702c026 | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 1316 | ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) |
| 1317 | hwif->host->host_flags |= IDE_HFLAG_SERIALIZE; |
Bartlomiej Zolnierkiewicz | 1024c5f | 2008-05-04 17:03:41 +0200 | [diff] [blame] | 1318 | |
Bartlomiej Zolnierkiewicz | 6b49249 | 2008-12-29 20:27:34 +0100 | [diff] [blame] | 1319 | if (d->max_sectors) |
| 1320 | hwif->rqsize = d->max_sectors; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1321 | |
| 1322 | /* call chipset specific routine for each enabled port */ |
| 1323 | if (d->init_hwif) |
| 1324 | d->init_hwif(hwif); |
Bartlomiej Zolnierkiewicz | c7f6f21 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1325 | } |
Bartlomiej Zolnierkiewicz | bfa14b4 | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1326 | |
Bartlomiej Zolnierkiewicz | c7f6f21 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1327 | static void ide_port_cable_detect(ide_hwif_t *hwif) |
| 1328 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1329 | const struct ide_port_ops *port_ops = hwif->port_ops; |
| 1330 | |
| 1331 | if (port_ops && port_ops->cable_detect && (hwif->ultra_mask & 0x78)) { |
Bartlomiej Zolnierkiewicz | bfa14b4 | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1332 | if (hwif->cbl != ATA_CBL_PATA40_SHORT) |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1333 | hwif->cbl = port_ops->cable_detect(hwif); |
Bartlomiej Zolnierkiewicz | bfa14b4 | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1334 | } |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1335 | } |
| 1336 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1337 | static unsigned int ide_indexes; |
| 1338 | |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1339 | /** |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1340 | * ide_find_port_slot - find free port slot |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1341 | * @d: IDE port info |
| 1342 | * |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1343 | * Return the new port slot index or -ENOENT if we are out of free slots. |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1344 | */ |
| 1345 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1346 | static int ide_find_port_slot(const struct ide_port_info *d) |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1347 | { |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1348 | int idx = -ENOENT; |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1349 | u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1; |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1350 | u8 i = (d && (d->host_flags & IDE_HFLAG_QD_2ND_PORT)) ? 1 : 0;; |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1351 | |
| 1352 | /* |
| 1353 | * Claim an unassigned slot. |
| 1354 | * |
| 1355 | * Give preference to claiming other slots before claiming ide0/ide1, |
| 1356 | * just in case there's another interface yet-to-be-scanned |
| 1357 | * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults). |
| 1358 | * |
| 1359 | * Unless there is a bootable card that does not use the standard |
| 1360 | * ports 0x1f0/0x170 (the ide0/ide1 defaults). |
| 1361 | */ |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1362 | mutex_lock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 1363 | if (bootable) { |
| 1364 | if ((ide_indexes | i) != (1 << MAX_HWIFS) - 1) |
| 1365 | idx = ffz(ide_indexes | i); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1366 | } else { |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 1367 | if ((ide_indexes | 3) != (1 << MAX_HWIFS) - 1) |
| 1368 | idx = ffz(ide_indexes | 3); |
| 1369 | else if ((ide_indexes & 3) != 3) |
| 1370 | idx = ffz(ide_indexes); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1371 | } |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1372 | if (idx >= 0) |
| 1373 | ide_indexes |= (1 << idx); |
| 1374 | mutex_unlock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1375 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1376 | return idx; |
| 1377 | } |
Bartlomiej Zolnierkiewicz | eb3aff5 | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 1378 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1379 | static void ide_free_port_slot(int idx) |
| 1380 | { |
| 1381 | mutex_lock(&ide_cfg_mtx); |
| 1382 | ide_indexes &= ~(1 << idx); |
| 1383 | mutex_unlock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1384 | } |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1385 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1386 | struct ide_host *ide_host_alloc(const struct ide_port_info *d, hw_regs_t **hws) |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1387 | { |
| 1388 | struct ide_host *host; |
| 1389 | int i; |
| 1390 | |
| 1391 | host = kzalloc(sizeof(*host), GFP_KERNEL); |
| 1392 | if (host == NULL) |
| 1393 | return NULL; |
| 1394 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1395 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1396 | ide_hwif_t *hwif; |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1397 | int idx; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1398 | |
| 1399 | if (hws[i] == NULL) |
| 1400 | continue; |
| 1401 | |
Bartlomiej Zolnierkiewicz | 18de101 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1402 | hwif = kzalloc(sizeof(*hwif), GFP_KERNEL); |
| 1403 | if (hwif == NULL) |
| 1404 | continue; |
| 1405 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1406 | idx = ide_find_port_slot(d); |
| 1407 | if (idx < 0) { |
| 1408 | printk(KERN_ERR "%s: no free slot for interface\n", |
| 1409 | d ? d->name : "ide"); |
Bartlomiej Zolnierkiewicz | 18de101 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1410 | kfree(hwif); |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1411 | continue; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1412 | } |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1413 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1414 | ide_init_port_data(hwif, idx); |
| 1415 | |
Bartlomiej Zolnierkiewicz | 08da591 | 2008-07-24 22:53:15 +0200 | [diff] [blame] | 1416 | hwif->host = host; |
| 1417 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1418 | host->ports[i] = hwif; |
| 1419 | host->n_ports++; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1420 | } |
| 1421 | |
| 1422 | if (host->n_ports == 0) { |
| 1423 | kfree(host); |
| 1424 | return NULL; |
| 1425 | } |
| 1426 | |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 1427 | if (hws[0]) |
| 1428 | host->dev[0] = hws[0]->dev; |
| 1429 | |
Bartlomiej Zolnierkiewicz | feb22b7 | 2008-10-10 22:39:32 +0200 | [diff] [blame] | 1430 | if (d) { |
| 1431 | host->init_chipset = d->init_chipset; |
Bartlomiej Zolnierkiewicz | ef0b042 | 2008-07-24 22:53:19 +0200 | [diff] [blame] | 1432 | host->host_flags = d->host_flags; |
Bartlomiej Zolnierkiewicz | feb22b7 | 2008-10-10 22:39:32 +0200 | [diff] [blame] | 1433 | } |
Bartlomiej Zolnierkiewicz | ef0b042 | 2008-07-24 22:53:19 +0200 | [diff] [blame] | 1434 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1435 | return host; |
| 1436 | } |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1437 | EXPORT_SYMBOL_GPL(ide_host_alloc); |
| 1438 | |
| 1439 | int ide_host_register(struct ide_host *host, const struct ide_port_info *d, |
| 1440 | hw_regs_t **hws) |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1441 | { |
| 1442 | ide_hwif_t *hwif, *mate = NULL; |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1443 | int i, j = 0; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1444 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1445 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1446 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1447 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1448 | if (hwif == NULL) { |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1449 | mate = NULL; |
| 1450 | continue; |
| 1451 | } |
| 1452 | |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 1453 | ide_init_port_hw(hwif, hws[i]); |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 1454 | ide_port_apply_params(hwif); |
| 1455 | |
| 1456 | if (d == NULL) { |
| 1457 | mate = NULL; |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 1458 | } else { |
| 1459 | if ((i & 1) && mate) { |
| 1460 | hwif->mate = mate; |
| 1461 | mate->mate = hwif; |
| 1462 | } |
| 1463 | |
| 1464 | mate = (i & 1) ? NULL : hwif; |
| 1465 | |
| 1466 | ide_init_port(hwif, i & 1, d); |
| 1467 | ide_port_cable_detect(hwif); |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 1468 | } |
| 1469 | |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1470 | ide_port_init_devices(hwif); |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1471 | } |
| 1472 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1473 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1474 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1475 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1476 | if (hwif == NULL) |
| 1477 | continue; |
Bartlomiej Zolnierkiewicz | 139ddfc | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1478 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1479 | if (ide_probe_port(hwif) == 0) |
| 1480 | hwif->present = 1; |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1481 | |
| 1482 | if (hwif->chipset != ide_4drives || !hwif->mate || |
| 1483 | !hwif->mate->present) |
| 1484 | ide_register_port(hwif); |
| 1485 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1486 | if (hwif->present) |
| 1487 | ide_port_tune_devices(hwif); |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1488 | } |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1489 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1490 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1491 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1492 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1493 | if (hwif == NULL) |
| 1494 | continue; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1495 | |
| 1496 | if (hwif_init(hwif) == 0) { |
| 1497 | printk(KERN_INFO "%s: failed to initialize IDE " |
| 1498 | "interface\n", hwif->name); |
Bartlomiej Zolnierkiewicz | 4853565 | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 1499 | hwif->present = 0; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1500 | continue; |
| 1501 | } |
Bartlomiej Zolnierkiewicz | decdc3f | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1502 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1503 | if (hwif->present) |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 1504 | if (ide_port_setup_devices(hwif) == 0) { |
| 1505 | hwif->present = 0; |
| 1506 | continue; |
| 1507 | } |
| 1508 | |
| 1509 | j++; |
Bartlomiej Zolnierkiewicz | 26042d0 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1510 | |
Bartlomiej Zolnierkiewicz | decdc3f | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1511 | ide_acpi_init(hwif); |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1512 | |
| 1513 | if (hwif->present) |
| 1514 | ide_acpi_port_init_devices(hwif); |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1515 | } |
| 1516 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1517 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1518 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1519 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1520 | if (hwif == NULL) |
| 1521 | continue; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1522 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1523 | if (hwif->present) |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1524 | hwif_register_devices(hwif); |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1525 | } |
| 1526 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1527 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1528 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | 327617e | 2008-02-02 19:56:43 +0100 | [diff] [blame] | 1529 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1530 | if (hwif == NULL) |
| 1531 | continue; |
Bartlomiej Zolnierkiewicz | 327617e | 2008-02-02 19:56:43 +0100 | [diff] [blame] | 1532 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1533 | ide_sysfs_register_port(hwif); |
| 1534 | ide_proc_register_port(hwif); |
| 1535 | |
| 1536 | if (hwif->present) |
Bartlomiej Zolnierkiewicz | d9270a3 | 2008-02-02 19:56:43 +0100 | [diff] [blame] | 1537 | ide_proc_port_register_devices(hwif); |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1538 | } |
| 1539 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1540 | return j ? 0 : -1; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1541 | } |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1542 | EXPORT_SYMBOL_GPL(ide_host_register); |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1543 | |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1544 | int ide_host_add(const struct ide_port_info *d, hw_regs_t **hws, |
| 1545 | struct ide_host **hostp) |
| 1546 | { |
| 1547 | struct ide_host *host; |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1548 | int rc; |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1549 | |
| 1550 | host = ide_host_alloc(d, hws); |
| 1551 | if (host == NULL) |
| 1552 | return -ENOMEM; |
| 1553 | |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1554 | rc = ide_host_register(host, d, hws); |
| 1555 | if (rc) { |
| 1556 | ide_host_free(host); |
| 1557 | return rc; |
| 1558 | } |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1559 | |
| 1560 | if (hostp) |
| 1561 | *hostp = host; |
| 1562 | |
| 1563 | return 0; |
| 1564 | } |
| 1565 | EXPORT_SYMBOL_GPL(ide_host_add); |
| 1566 | |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1567 | void ide_host_free(struct ide_host *host) |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1568 | { |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1569 | ide_hwif_t *hwif; |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1570 | int i; |
| 1571 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1572 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1573 | hwif = host->ports[i]; |
| 1574 | |
| 1575 | if (hwif == NULL) |
| 1576 | continue; |
| 1577 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1578 | ide_free_port_slot(hwif->index); |
Bartlomiej Zolnierkiewicz | 18de101 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1579 | kfree(hwif); |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 1580 | } |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1581 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1582 | kfree(host); |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1583 | } |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1584 | EXPORT_SYMBOL_GPL(ide_host_free); |
| 1585 | |
| 1586 | void ide_host_remove(struct ide_host *host) |
| 1587 | { |
| 1588 | int i; |
| 1589 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1590 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1591 | if (host->ports[i]) |
| 1592 | ide_unregister(host->ports[i]); |
| 1593 | } |
| 1594 | |
| 1595 | ide_host_free(host); |
| 1596 | } |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1597 | EXPORT_SYMBOL_GPL(ide_host_remove); |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1598 | |
| 1599 | void ide_port_scan(ide_hwif_t *hwif) |
| 1600 | { |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 1601 | ide_port_apply_params(hwif); |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1602 | ide_port_cable_detect(hwif); |
| 1603 | ide_port_init_devices(hwif); |
| 1604 | |
| 1605 | if (ide_probe_port(hwif) < 0) |
| 1606 | return; |
| 1607 | |
| 1608 | hwif->present = 1; |
| 1609 | |
| 1610 | ide_port_tune_devices(hwif); |
| 1611 | ide_acpi_port_init_devices(hwif); |
| 1612 | ide_port_setup_devices(hwif); |
| 1613 | hwif_register_devices(hwif); |
| 1614 | ide_proc_port_register_devices(hwif); |
| 1615 | } |
| 1616 | EXPORT_SYMBOL_GPL(ide_port_scan); |