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 |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 184 | * @id: buffer for IDENTIFY data |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | * |
| 186 | * Called when we have issued a drive identify command to |
| 187 | * read and parse the results. This function is run with |
| 188 | * interrupts disabled. |
| 189 | */ |
Bartlomiej Zolnierkiewicz | 047140a | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 190 | |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 191 | static void do_identify(ide_drive_t *drive, u8 cmd, u16 *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | { |
Bartlomiej Zolnierkiewicz | 898ec22 | 2009-01-06 17:20:52 +0100 | [diff] [blame] | 193 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 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")) |
Bartlomiej Zolnierkiewicz | 69197ad | 2009-03-27 12:46:26 +0100 | [diff] [blame] | 231 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
| 232 | else |
| 233 | drive->dev_flags |= IDE_DFLAG_PRESENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | /** |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 237 | * ide_dev_read_id - send ATA/ATAPI IDENTIFY command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | * @drive: drive to identify |
| 239 | * @cmd: command to use |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 240 | * @id: buffer for IDENTIFY data |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | * |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 242 | * Sends an ATA(PI) IDENTIFY request to a drive and waits for a response. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | * |
| 244 | * Returns: 0 device was identified |
| 245 | * 1 device timed-out (no response to identify request) |
| 246 | * 2 device aborted the command (refused to identify itself) |
| 247 | */ |
| 248 | |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 249 | int ide_dev_read_id(ide_drive_t *drive, u8 cmd, u16 *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | { |
Bartlomiej Zolnierkiewicz | 898ec22 | 2009-01-06 17:20:52 +0100 | [diff] [blame] | 251 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 252 | struct ide_io_ports *io_ports = &hwif->io_ports; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 253 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 254 | int use_altstatus = 0, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | unsigned long timeout; |
| 256 | u8 s = 0, a = 0; |
| 257 | |
Bartlomiej Zolnierkiewicz | a182807 | 2009-03-24 23:22:53 +0100 | [diff] [blame] | 258 | /* |
| 259 | * Disable device IRQ. Otherwise we'll get spurious interrupts |
| 260 | * during the identify phase that the IRQ handler isn't expecting. |
| 261 | */ |
| 262 | if (io_ports->ctl_addr) |
| 263 | tp_ops->set_irq(hwif, 0); |
| 264 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | /* take a deep breath */ |
| 266 | msleep(50); |
| 267 | |
Bartlomiej Zolnierkiewicz | 6636487 | 2008-12-02 20:40:03 +0100 | [diff] [blame] | 268 | if (io_ports->ctl_addr && |
| 269 | (hwif->host_flags & IDE_HFLAG_BROKEN_ALTSTATUS) == 0) { |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 270 | a = tp_ops->read_altstatus(hwif); |
| 271 | s = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 272 | if ((a ^ s) & ~ATA_IDX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | /* ancient Seagate drives, broken interfaces */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 274 | printk(KERN_INFO "%s: probing with STATUS(0x%02x) " |
| 275 | "instead of ALTSTATUS(0x%02x)\n", |
| 276 | drive->name, s, a); |
| 277 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | /* use non-intrusive polling */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 279 | use_altstatus = 1; |
| 280 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
| 282 | /* set features register for atapi |
| 283 | * identify command to be sure of reply |
| 284 | */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 285 | if (cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame^] | 286 | struct ide_cmd cmd; |
Bartlomiej Zolnierkiewicz | 4e65837 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 287 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame^] | 288 | memset(&cmd, 0, sizeof(cmd)); |
Bartlomiej Zolnierkiewicz | 4e65837 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 289 | /* disable DMA & overlap */ |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame^] | 290 | cmd.tf_flags = IDE_TFLAG_OUT_FEATURE; |
Bartlomiej Zolnierkiewicz | 4e65837 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 291 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame^] | 292 | tp_ops->tf_load(drive, &cmd); |
Bartlomiej Zolnierkiewicz | 4e65837 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 293 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
| 295 | /* ask drive for ID */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 296 | tp_ops->exec_command(hwif, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 298 | timeout = ((cmd == ATA_CMD_ID_ATA) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2; |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 299 | |
| 300 | if (ide_busy_sleep(hwif, timeout, use_altstatus)) |
| 301 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 303 | /* wait for IRQ and ATA_DRQ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | msleep(50); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 305 | s = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 306 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 307 | if (OK_STAT(s, ATA_DRQ, BAD_R_STAT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | /* drive returned ID */ |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 309 | do_identify(drive, cmd, id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | /* drive responded with ID */ |
| 311 | rc = 0; |
| 312 | /* clear drive IRQ */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 313 | (void)tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | } else { |
| 315 | /* drive refused ID */ |
| 316 | rc = 2; |
| 317 | } |
| 318 | return rc; |
| 319 | } |
| 320 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 321 | 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] | 322 | { |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 323 | u8 stat; |
| 324 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 325 | timeout += jiffies; |
| 326 | |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 327 | do { |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 328 | msleep(50); /* give drive a breather */ |
| 329 | stat = altstatus ? hwif->tp_ops->read_altstatus(hwif) |
| 330 | : hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 331 | if ((stat & ATA_BUSY) == 0) |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 332 | return 0; |
| 333 | } while (time_before(jiffies, timeout)); |
| 334 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 335 | return 1; /* drive timed-out */ |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 336 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 338 | static u8 ide_read_device(ide_drive_t *drive) |
| 339 | { |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame^] | 340 | struct ide_cmd cmd; |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 341 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame^] | 342 | memset(&cmd, 0, sizeof(cmd)); |
| 343 | cmd.tf_flags = IDE_TFLAG_IN_DEVICE; |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 344 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame^] | 345 | drive->hwif->tp_ops->tf_read(drive, &cmd); |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 346 | |
Bartlomiej Zolnierkiewicz | 22aa4b3 | 2009-03-27 12:46:37 +0100 | [diff] [blame^] | 347 | return cmd.tf.device; |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 348 | } |
| 349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | /** |
| 351 | * do_probe - probe an IDE device |
| 352 | * @drive: drive to probe |
| 353 | * @cmd: command to use |
| 354 | * |
| 355 | * do_probe() has the difficult job of finding a drive if it exists, |
| 356 | * without getting hung up if it doesn't exist, without trampling on |
| 357 | * ethernet cards, and without leaving any IRQs dangling to haunt us later. |
| 358 | * |
| 359 | * If a drive is "known" to exist (from CMOS or kernel parameters), |
| 360 | * but does not respond right away, the probe will "hang in there" |
| 361 | * for the maximum wait time (about 30 seconds), otherwise it will |
| 362 | * exit much more quickly. |
| 363 | * |
| 364 | * Returns: 0 device was identified |
| 365 | * 1 device timed-out (no response to identify request) |
| 366 | * 2 device aborted the command (refused to identify itself) |
| 367 | * 3 bad status from device (possible for ATAPI drives) |
| 368 | * 4 probe was not attempted because failure was obvious |
| 369 | */ |
| 370 | |
| 371 | static int do_probe (ide_drive_t *drive, u8 cmd) |
| 372 | { |
Bartlomiej Zolnierkiewicz | 898ec22 | 2009-01-06 17:20:52 +0100 | [diff] [blame] | 373 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 374 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 375 | u16 *id = drive->id; |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 376 | int rc; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 377 | u8 present = !!(drive->dev_flags & IDE_DFLAG_PRESENT), stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 379 | /* avoid waiting for inappropriate probes */ |
| 380 | if (present && drive->media != ide_disk && cmd == ATA_CMD_ID_ATA) |
| 381 | return 4; |
| 382 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | #ifdef DEBUG |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 384 | 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] | 385 | drive->name, present, drive->media, |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 386 | (cmd == ATA_CMD_ID_ATA) ? "ATA" : "ATAPI"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | #endif |
| 388 | |
| 389 | /* needed for some systems |
| 390 | * (e.g. crw9624 as drive0 with disk as slave) |
| 391 | */ |
| 392 | msleep(50); |
| 393 | SELECT_DRIVE(drive); |
| 394 | msleep(50); |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 395 | |
Bartlomiej Zolnierkiewicz | 7f612f2 | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 396 | if (ide_read_device(drive) != drive->select && present == 0) { |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 397 | if (drive->dn & 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | /* exit with drive0 selected */ |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 399 | SELECT_DRIVE(hwif->devices[0]); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 400 | /* allow ATA_BUSY to assert & clear */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | msleep(50); |
| 402 | } |
| 403 | /* no i/f present: mmm.. this should be a 4 -ml */ |
| 404 | return 3; |
| 405 | } |
| 406 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 407 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 408 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 409 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY) || |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 410 | present || cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 411 | rc = ide_dev_read_id(drive, cmd, id); |
| 412 | if (rc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | /* failed: try again */ |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 414 | rc = ide_dev_read_id(drive, cmd, id); |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 415 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 416 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 417 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 418 | if (stat == (ATA_BUSY | ATA_DRDY)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | return 4; |
| 420 | |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 421 | if (rc == 1 && cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 422 | printk(KERN_ERR "%s: no response (status = 0x%02x), " |
| 423 | "resetting drive\n", drive->name, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | msleep(50); |
Bartlomiej Zolnierkiewicz | e81a3bd | 2008-07-15 21:21:48 +0200 | [diff] [blame] | 425 | SELECT_DRIVE(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | msleep(50); |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 427 | tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET); |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 428 | (void)ide_busy_sleep(hwif, WAIT_WORSTCASE, 0); |
Bartlomiej Zolnierkiewicz | 2ebe1d9 | 2009-03-24 23:22:59 +0100 | [diff] [blame] | 429 | rc = ide_dev_read_id(drive, cmd, id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | } |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 431 | |
| 432 | /* ensure drive IRQ is clear */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 433 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | if (rc == 1) |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 436 | printk(KERN_ERR "%s: no response (status = 0x%02x)\n", |
| 437 | drive->name, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | } else { |
| 439 | /* not present or maybe ATAPI */ |
| 440 | rc = 3; |
| 441 | } |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 442 | if (drive->dn & 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | /* exit with drive0 selected */ |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 444 | SELECT_DRIVE(hwif->devices[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | msleep(50); |
| 446 | /* ensure drive irq is clear */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 447 | (void)tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | } |
| 449 | return rc; |
| 450 | } |
| 451 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | /** |
| 453 | * probe_for_drives - upper level drive probe |
| 454 | * @drive: drive to probe for |
| 455 | * |
| 456 | * probe_for_drive() tests for existence of a given drive using do_probe() |
| 457 | * and presents things to the user as needed. |
| 458 | * |
| 459 | * Returns: 0 no device was found |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 460 | * 1 device was found |
| 461 | * (note: IDE_DFLAG_PRESENT might still be not set) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | */ |
Bartlomiej Zolnierkiewicz | 047140a | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 463 | |
| 464 | static u8 probe_for_drive(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 466 | char *m; |
Bartlomiej Zolnierkiewicz | 1bd4c1f | 2009-03-24 23:22:58 +0100 | [diff] [blame] | 467 | int rc; |
| 468 | u8 cmd; |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 469 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | /* |
| 471 | * In order to keep things simple we have an id |
| 472 | * block for all drives at all times. If the device |
| 473 | * is pre ATA or refuses ATA/ATAPI identify we |
| 474 | * will add faked data to this. |
| 475 | * |
| 476 | * Also note that 0 everywhere means "can't do X" |
| 477 | */ |
| 478 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 479 | drive->dev_flags &= ~IDE_DFLAG_ID_READ; |
| 480 | |
Bartlomiej Zolnierkiewicz | 151a670 | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 481 | drive->id = kzalloc(SECTOR_SIZE, GFP_KERNEL); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 482 | if (drive->id == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | printk(KERN_ERR "ide: out of memory for id data.\n"); |
| 484 | return 0; |
| 485 | } |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 486 | |
| 487 | m = (char *)&drive->id[ATA_ID_PROD]; |
| 488 | strcpy(m, "UNKNOWN"); |
| 489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | /* skip probing? */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 491 | if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | /* if !(success||timed-out) */ |
Bartlomiej Zolnierkiewicz | 1bd4c1f | 2009-03-24 23:22:58 +0100 | [diff] [blame] | 493 | cmd = ATA_CMD_ID_ATA; |
| 494 | rc = do_probe(drive, cmd); |
| 495 | if (rc >= 2) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | /* look for ATAPI device */ |
Bartlomiej Zolnierkiewicz | 1bd4c1f | 2009-03-24 23:22:58 +0100 | [diff] [blame] | 497 | cmd = ATA_CMD_ID_ATAPI; |
| 498 | rc = do_probe(drive, cmd); |
| 499 | } |
Bartlomiej Zolnierkiewicz | c36a7e9 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 500 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 501 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Bartlomiej Zolnierkiewicz | 69197ad | 2009-03-27 12:46:26 +0100 | [diff] [blame] | 502 | goto out_free; |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 503 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | /* identification failed? */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 505 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | if (drive->media == ide_disk) { |
| 507 | printk(KERN_INFO "%s: non-IDE drive, CHS=%d/%d/%d\n", |
| 508 | drive->name, drive->cyl, |
| 509 | drive->head, drive->sect); |
| 510 | } else if (drive->media == ide_cdrom) { |
| 511 | printk(KERN_INFO "%s: ATAPI cdrom (?)\n", drive->name); |
| 512 | } else { |
| 513 | /* nuke it */ |
| 514 | 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] | 515 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | } |
Bartlomiej Zolnierkiewicz | 1bd4c1f | 2009-03-24 23:22:58 +0100 | [diff] [blame] | 517 | } else { |
| 518 | if (cmd == ATA_CMD_ID_ATAPI) |
| 519 | ide_classify_atapi_dev(drive); |
| 520 | else |
| 521 | ide_classify_ata_dev(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | } |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 524 | |
| 525 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Bartlomiej Zolnierkiewicz | 69197ad | 2009-03-27 12:46:26 +0100 | [diff] [blame] | 526 | goto out_free; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 527 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | /* The drive wasn't being helpful. Add generic info only */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 529 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | generic_id(drive); |
| 531 | return 1; |
| 532 | } |
| 533 | |
| 534 | if (drive->media == ide_disk) { |
| 535 | ide_disk_init_chs(drive); |
| 536 | ide_disk_init_mult_count(drive); |
| 537 | } |
| 538 | |
Bartlomiej Zolnierkiewicz | 69197ad | 2009-03-27 12:46:26 +0100 | [diff] [blame] | 539 | return 1; |
| 540 | out_free: |
| 541 | kfree(drive->id); |
| 542 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | } |
| 544 | |
Pavel Machek | fc41069 | 2008-07-23 19:56:02 +0200 | [diff] [blame] | 545 | static void hwif_release_dev(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | { |
| 547 | ide_hwif_t *hwif = container_of(dev, ide_hwif_t, gendev); |
| 548 | |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 549 | complete(&hwif->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | } |
| 551 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 552 | static int ide_register_port(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | { |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 554 | int ret; |
| 555 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | /* register with global device tree */ |
Kay Sievers | dc09c78 | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 557 | dev_set_name(&hwif->gendev, hwif->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | hwif->gendev.driver_data = hwif; |
Andreas Schwab | bb54aff | 2009-01-19 13:46:56 +0100 | [diff] [blame] | 559 | if (hwif->gendev.parent == NULL) |
| 560 | hwif->gendev.parent = hwif->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | hwif->gendev.release = hwif_release_dev; |
Bartlomiej Zolnierkiewicz | 96d4094 | 2009-01-02 16:12:47 +0100 | [diff] [blame] | 562 | |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 563 | ret = device_register(&hwif->gendev); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 564 | if (ret < 0) { |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 565 | printk(KERN_WARNING "IDE: %s: device_register error: %d\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 566 | __func__, ret); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 567 | goto out; |
| 568 | } |
| 569 | |
Greg Kroah-Hartman | 3ee074b | 2008-07-21 20:03:34 -0700 | [diff] [blame] | 570 | hwif->portdev = device_create(ide_port_class, &hwif->gendev, |
| 571 | MKDEV(0, 0), hwif, hwif->name); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 572 | if (IS_ERR(hwif->portdev)) { |
| 573 | ret = PTR_ERR(hwif->portdev); |
| 574 | device_unregister(&hwif->gendev); |
| 575 | } |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 576 | out: |
| 577 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | } |
| 579 | |
Bartlomiej Zolnierkiewicz | c860a8f | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 580 | /** |
| 581 | * ide_port_wait_ready - wait for port to become ready |
| 582 | * @hwif: IDE port |
| 583 | * |
| 584 | * This is needed on some PPCs and a bunch of BIOS-less embedded |
| 585 | * platforms. Typical cases are: |
| 586 | * |
| 587 | * - The firmware hard reset the disk before booting the kernel, |
| 588 | * the drive is still doing it's poweron-reset sequence, that |
| 589 | * can take up to 30 seconds. |
| 590 | * |
| 591 | * - The firmware does nothing (or no firmware), the device is |
| 592 | * still in POST state (same as above actually). |
| 593 | * |
| 594 | * - Some CD/DVD/Writer combo drives tend to drive the bus during |
| 595 | * their reset sequence even when they are non-selected slave |
| 596 | * devices, thus preventing discovery of the main HD. |
| 597 | * |
| 598 | * Doing this wait-for-non-busy should not harm any existing |
| 599 | * configuration and fix some issues like the above. |
| 600 | * |
| 601 | * BenH. |
| 602 | * |
| 603 | * Returns 0 on success, error code (< 0) otherwise. |
| 604 | */ |
| 605 | |
| 606 | static int ide_port_wait_ready(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | { |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 608 | ide_drive_t *drive; |
| 609 | int i, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
| 611 | printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name); |
| 612 | |
| 613 | /* Let HW settle down a bit from whatever init state we |
| 614 | * come from */ |
| 615 | mdelay(2); |
| 616 | |
| 617 | /* Wait for BSY bit to go away, spec timeout is 30 seconds, |
| 618 | * I know of at least one disk who takes 31 seconds, I use 35 |
| 619 | * here to be safe |
| 620 | */ |
| 621 | rc = ide_wait_not_busy(hwif, 35000); |
| 622 | if (rc) |
| 623 | return rc; |
| 624 | |
| 625 | /* Now make sure both master & slave are ready */ |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 626 | ide_port_for_each_dev(i, drive, hwif) { |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 627 | /* Ignore disks that we will not probe for later. */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 628 | if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 || |
| 629 | (drive->dev_flags & IDE_DFLAG_PRESENT)) { |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 630 | SELECT_DRIVE(drive); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 631 | hwif->tp_ops->set_irq(hwif, 1); |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 632 | mdelay(2); |
| 633 | rc = ide_wait_not_busy(hwif, 35000); |
| 634 | if (rc) |
| 635 | goto out; |
| 636 | } else |
| 637 | printk(KERN_DEBUG "%s: ide_wait_not_busy() skipped\n", |
| 638 | drive->name); |
| 639 | } |
| 640 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | /* Exit function with master reselected (let's be sane) */ |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 642 | if (i) |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 643 | SELECT_DRIVE(hwif->devices[0]); |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 644 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | return rc; |
| 646 | } |
| 647 | |
| 648 | /** |
| 649 | * ide_undecoded_slave - look for bad CF adapters |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 650 | * @dev1: slave device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | * |
| 652 | * Analyse the drives on the interface and attempt to decide if we |
| 653 | * have the same drive viewed twice. This occurs with crap CF adapters |
| 654 | * and PCMCIA sometimes. |
| 655 | */ |
| 656 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 657 | void ide_undecoded_slave(ide_drive_t *dev1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | { |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 659 | ide_drive_t *dev0 = dev1->hwif->devices[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 661 | if ((dev1->dn & 1) == 0 || (dev0->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | return; |
| 663 | |
| 664 | /* If the models don't match they are not the same product */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 665 | if (strcmp((char *)&dev0->id[ATA_ID_PROD], |
| 666 | (char *)&dev1->id[ATA_ID_PROD])) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | return; |
| 668 | |
| 669 | /* Serial numbers do not match */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 670 | if (strncmp((char *)&dev0->id[ATA_ID_SERNO], |
| 671 | (char *)&dev1->id[ATA_ID_SERNO], ATA_ID_SERNO_LEN)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | return; |
| 673 | |
| 674 | /* No serial number, thankfully very rare for CF */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 675 | if (*(char *)&dev0->id[ATA_ID_SERNO] == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | return; |
| 677 | |
| 678 | /* Appears to be an IDE flash adapter with decode bugs */ |
| 679 | printk(KERN_WARNING "ide-probe: ignoring undecoded slave\n"); |
| 680 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 681 | dev1->dev_flags &= ~IDE_DFLAG_PRESENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | EXPORT_SYMBOL_GPL(ide_undecoded_slave); |
| 685 | |
Bartlomiej Zolnierkiewicz | 9d50152 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 686 | static int ide_probe_port(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | { |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 688 | ide_drive_t *drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | unsigned int irqd; |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 690 | int i, rc = -ENODEV; |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 691 | |
| 692 | BUG_ON(hwif->present); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 694 | if ((hwif->devices[0]->dev_flags & IDE_DFLAG_NOPROBE) && |
| 695 | (hwif->devices[1]->dev_flags & IDE_DFLAG_NOPROBE)) |
Bartlomiej Zolnierkiewicz | 9d50152 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 696 | return -EACCES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | /* |
| 699 | * We must always disable IRQ, as probe_for_drive will assert IRQ, but |
| 700 | * we'll install our IRQ driver much later... |
| 701 | */ |
| 702 | irqd = hwif->irq; |
| 703 | if (irqd) |
| 704 | disable_irq(hwif->irq); |
| 705 | |
Bartlomiej Zolnierkiewicz | c860a8f | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 706 | if (ide_port_wait_ready(hwif) == -EBUSY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name); |
| 708 | |
| 709 | /* |
Bartlomiej Zolnierkiewicz | f367bed | 2008-03-29 19:48:21 +0100 | [diff] [blame] | 710 | * Second drive should only exist if first drive was found, |
| 711 | * but a lot of cdrom drives are configured as single slaves. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | */ |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 713 | ide_port_for_each_dev(i, drive, hwif) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | (void) probe_for_drive(drive); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 715 | if (drive->dev_flags & IDE_DFLAG_PRESENT) |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 716 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | } |
Bartlomiej Zolnierkiewicz | e460a59 | 2008-04-27 15:38:24 +0200 | [diff] [blame] | 718 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | /* |
| 720 | * Use cached IRQ number. It might be (and is...) changed by probe |
| 721 | * code above |
| 722 | */ |
| 723 | if (irqd) |
| 724 | enable_irq(irqd); |
| 725 | |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 726 | return rc; |
Bartlomiej Zolnierkiewicz | e84e7ea | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 727 | } |
| 728 | |
| 729 | static void ide_port_tune_devices(ide_hwif_t *hwif) |
| 730 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 731 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 732 | ide_drive_t *drive; |
| 733 | int i; |
Bartlomiej Zolnierkiewicz | e84e7ea | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 734 | |
Bartlomiej Zolnierkiewicz | 7ed5b15 | 2009-03-24 23:22:41 +0100 | [diff] [blame] | 735 | ide_port_for_each_present_dev(i, drive, hwif) { |
| 736 | if (port_ops && port_ops->quirkproc) |
| 737 | port_ops->quirkproc(drive); |
Bartlomiej Zolnierkiewicz | f01393e | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 738 | } |
Bartlomiej Zolnierkiewicz | 0380dad | 2007-06-08 15:14:29 +0200 | [diff] [blame] | 739 | |
Bartlomiej Zolnierkiewicz | 7ed5b15 | 2009-03-24 23:22:41 +0100 | [diff] [blame] | 740 | ide_port_for_each_present_dev(i, drive, hwif) { |
| 741 | ide_set_max_pio(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
Bartlomiej Zolnierkiewicz | 7ed5b15 | 2009-03-24 23:22:41 +0100 | [diff] [blame] | 743 | drive->dev_flags |= IDE_DFLAG_NICE1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | |
Bartlomiej Zolnierkiewicz | 7ed5b15 | 2009-03-24 23:22:41 +0100 | [diff] [blame] | 745 | if (hwif->dma_ops) |
| 746 | ide_set_dma(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | } |
| 748 | } |
| 749 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | * init request queue |
| 752 | */ |
| 753 | static int ide_init_queue(ide_drive_t *drive) |
| 754 | { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 755 | struct request_queue *q; |
Bartlomiej Zolnierkiewicz | 898ec22 | 2009-01-06 17:20:52 +0100 | [diff] [blame] | 756 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | int max_sectors = 256; |
| 758 | int max_sg_entries = PRD_ENTRIES; |
| 759 | |
| 760 | /* |
| 761 | * Our default set up assumes the normal IDE case, |
| 762 | * that is 64K segmenting, standard PRD setup |
| 763 | * and LBA28. Some drivers then impose their own |
| 764 | * limits and LBA48 we could raise it but as yet |
| 765 | * do not. |
| 766 | */ |
Christoph Lameter | 1946089 | 2005-06-23 00:08:19 -0700 | [diff] [blame] | 767 | |
Bartlomiej Zolnierkiewicz | 201bffa | 2009-01-02 16:12:50 +0100 | [diff] [blame] | 768 | 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] | 769 | if (!q) |
| 770 | return 1; |
| 771 | |
| 772 | q->queuedata = drive; |
| 773 | blk_queue_segment_boundary(q, 0xffff); |
| 774 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | if (hwif->rqsize < max_sectors) |
| 776 | max_sectors = hwif->rqsize; |
| 777 | blk_queue_max_sectors(q, max_sectors); |
| 778 | |
| 779 | #ifdef CONFIG_PCI |
| 780 | /* When we have an IOMMU, we may have a problem where pci_map_sg() |
| 781 | * creates segments that don't completely match our boundary |
| 782 | * requirements and thus need to be broken up again. Because it |
| 783 | * doesn't align properly either, we may actually have to break up |
| 784 | * to more segments than what was we got in the first place, a max |
| 785 | * worst case is twice as many. |
| 786 | * This will be fixed once we teach pci_map_sg() about our boundary |
| 787 | * requirements, hopefully soon. *FIXME* |
| 788 | */ |
| 789 | if (!PCI_DMA_BUS_IS_PHYS) |
| 790 | max_sg_entries >>= 1; |
| 791 | #endif /* CONFIG_PCI */ |
| 792 | |
| 793 | blk_queue_max_hw_segments(q, max_sg_entries); |
| 794 | blk_queue_max_phys_segments(q, max_sg_entries); |
| 795 | |
| 796 | /* assign drive queue */ |
| 797 | drive->queue = q; |
| 798 | |
| 799 | /* needs drive->queue to be set */ |
| 800 | ide_toggle_bounce(drive, 1); |
| 801 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | return 0; |
| 803 | } |
| 804 | |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 805 | static DEFINE_MUTEX(ide_cfg_mtx); |
| 806 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | /* |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 808 | * For any present drive: |
| 809 | * - allocate the block device queue |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 810 | */ |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 811 | static int ide_port_setup_devices(ide_hwif_t *hwif) |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 812 | { |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 813 | ide_drive_t *drive; |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 814 | int i, j = 0; |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 815 | |
Bartlomiej Zolnierkiewicz | 26042d0 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 816 | mutex_lock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | 7ed5b15 | 2009-03-24 23:22:41 +0100 | [diff] [blame] | 817 | ide_port_for_each_present_dev(i, drive, hwif) { |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 818 | if (ide_init_queue(drive)) { |
| 819 | printk(KERN_ERR "ide: failed to init %s\n", |
| 820 | drive->name); |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 821 | kfree(drive->id); |
| 822 | drive->id = NULL; |
| 823 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 824 | continue; |
| 825 | } |
| 826 | |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 827 | j++; |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 828 | } |
Bartlomiej Zolnierkiewicz | 26042d0 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 829 | mutex_unlock(&ide_cfg_mtx); |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 830 | |
| 831 | return j; |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 832 | } |
| 833 | |
| 834 | /* |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 835 | * This routine sets up the IRQ for an IDE interface. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | */ |
| 837 | static int init_irq (ide_hwif_t *hwif) |
| 838 | { |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 839 | struct ide_io_ports *io_ports = &hwif->io_ports; |
Bartlomiej Zolnierkiewicz | 255115fb | 2009-03-27 12:46:27 +0100 | [diff] [blame] | 840 | struct ide_host *host = hwif->host; |
| 841 | irq_handler_t irq_handler = host->irq_handler; |
| 842 | int sa = host->irq_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | |
Stanislaw Gruszka | 849d713 | 2009-03-05 16:10:57 +0100 | [diff] [blame] | 844 | if (irq_handler == NULL) |
| 845 | irq_handler = ide_intr; |
| 846 | |
Bartlomiej Zolnierkiewicz | ae86afa | 2009-01-06 17:20:48 +0100 | [diff] [blame] | 847 | if (io_ports->ctl_addr) |
| 848 | hwif->tp_ops->set_irq(hwif, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | |
Stanislaw Gruszka | 849d713 | 2009-03-05 16:10:57 +0100 | [diff] [blame] | 850 | if (request_irq(hwif->irq, irq_handler, sa, hwif->name, hwif)) |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 851 | goto out_up; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | |
Adrian Bunk | 7b89280 | 2008-02-06 01:36:29 -0800 | [diff] [blame] | 853 | #if !defined(__mc68000__) |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 854 | 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] | 855 | io_ports->data_addr, io_ports->status_addr, |
| 856 | io_ports->ctl_addr, hwif->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | #else |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 858 | printk(KERN_INFO "%s at 0x%08lx on irq %d", hwif->name, |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 859 | io_ports->data_addr, hwif->irq); |
Adrian Bunk | 7b89280 | 2008-02-06 01:36:29 -0800 | [diff] [blame] | 860 | #endif /* __mc68000__ */ |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 861 | if (hwif->host->host_flags & IDE_HFLAG_SERIALIZE) |
| 862 | printk(KERN_CONT " (serialized)"); |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 863 | printk(KERN_CONT "\n"); |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 864 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | out_up: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | return 1; |
| 868 | } |
| 869 | |
| 870 | static int ata_lock(dev_t dev, void *data) |
| 871 | { |
| 872 | /* FIXME: we want to pin hwif down */ |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | static struct kobject *ata_probe(dev_t dev, int *part, void *data) |
| 877 | { |
| 878 | ide_hwif_t *hwif = data; |
| 879 | int unit = *part >> PARTN_BITS; |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 880 | ide_drive_t *drive = hwif->devices[unit]; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 881 | |
| 882 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | return NULL; |
| 884 | |
| 885 | if (drive->media == ide_disk) |
| 886 | request_module("ide-disk"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | if (drive->media == ide_cdrom || drive->media == ide_optical) |
| 888 | request_module("ide-cd"); |
| 889 | if (drive->media == ide_tape) |
| 890 | request_module("ide-tape"); |
| 891 | if (drive->media == ide_floppy) |
| 892 | request_module("ide-floppy"); |
| 893 | |
| 894 | return NULL; |
| 895 | } |
| 896 | |
| 897 | static struct kobject *exact_match(dev_t dev, int *part, void *data) |
| 898 | { |
| 899 | struct gendisk *p = data; |
| 900 | *part &= (1 << PARTN_BITS) - 1; |
Tejun Heo | ed9e198 | 2008-08-25 19:56:05 +0900 | [diff] [blame] | 901 | return &disk_to_dev(p)->kobj; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | } |
| 903 | |
| 904 | static int exact_lock(dev_t dev, void *data) |
| 905 | { |
| 906 | struct gendisk *p = data; |
| 907 | |
| 908 | if (!get_disk(p)) |
| 909 | return -1; |
| 910 | return 0; |
| 911 | } |
| 912 | |
| 913 | void ide_register_region(struct gendisk *disk) |
| 914 | { |
| 915 | blk_register_region(MKDEV(disk->major, disk->first_minor), |
| 916 | disk->minors, NULL, exact_match, exact_lock, disk); |
| 917 | } |
| 918 | |
| 919 | EXPORT_SYMBOL_GPL(ide_register_region); |
| 920 | |
| 921 | void ide_unregister_region(struct gendisk *disk) |
| 922 | { |
| 923 | blk_unregister_region(MKDEV(disk->major, disk->first_minor), |
| 924 | disk->minors); |
| 925 | } |
| 926 | |
| 927 | EXPORT_SYMBOL_GPL(ide_unregister_region); |
| 928 | |
| 929 | void ide_init_disk(struct gendisk *disk, ide_drive_t *drive) |
| 930 | { |
| 931 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 7f612f2 | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 932 | unsigned int unit = drive->dn & 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
| 934 | disk->major = hwif->major; |
| 935 | disk->first_minor = unit << PARTN_BITS; |
| 936 | sprintf(disk->disk_name, "hd%c", 'a' + hwif->index * MAX_DRIVES + unit); |
| 937 | disk->queue = drive->queue; |
| 938 | } |
| 939 | |
| 940 | EXPORT_SYMBOL_GPL(ide_init_disk); |
| 941 | |
| 942 | static void drive_release_dev (struct device *dev) |
| 943 | { |
| 944 | ide_drive_t *drive = container_of(dev, ide_drive_t, gendev); |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 945 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | |
Bartlomiej Zolnierkiewicz | 5b0c4b3 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 947 | ide_proc_unregister_device(drive); |
| 948 | |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 949 | spin_lock_irq(&hwif->lock); |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 950 | kfree(drive->id); |
| 951 | drive->id = NULL; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 952 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 953 | /* Messed up locking ... */ |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 954 | spin_unlock_irq(&hwif->lock); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 955 | blk_cleanup_queue(drive->queue); |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 956 | spin_lock_irq(&hwif->lock); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 957 | drive->queue = NULL; |
Bartlomiej Zolnierkiewicz | b65fac3 | 2009-01-06 17:20:50 +0100 | [diff] [blame] | 958 | spin_unlock_irq(&hwif->lock); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 959 | |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 960 | complete(&drive->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | } |
| 962 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | static int hwif_init(ide_hwif_t *hwif) |
| 964 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | if (!hwif->irq) { |
Bartlomiej Zolnierkiewicz | 8b07ed2 | 2009-03-24 23:22:52 +0100 | [diff] [blame] | 966 | printk(KERN_ERR "%s: disabled, no IRQ\n", hwif->name); |
| 967 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | if (register_blkdev(hwif->major, hwif->name)) |
| 971 | return 0; |
| 972 | |
| 973 | if (!hwif->sg_max_nents) |
| 974 | hwif->sg_max_nents = PRD_ENTRIES; |
| 975 | |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 976 | hwif->sg_table = kmalloc(sizeof(struct scatterlist)*hwif->sg_max_nents, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | GFP_KERNEL); |
| 978 | if (!hwif->sg_table) { |
| 979 | printk(KERN_ERR "%s: unable to allocate SG table.\n", hwif->name); |
| 980 | goto out; |
| 981 | } |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 982 | |
| 983 | sg_init_table(hwif->sg_table, hwif->sg_max_nents); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | if (init_irq(hwif)) { |
Bartlomiej Zolnierkiewicz | 8b07ed2 | 2009-03-24 23:22:52 +0100 | [diff] [blame] | 986 | printk(KERN_ERR "%s: disabled, unable to get IRQ %d\n", |
| 987 | hwif->name, hwif->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | goto out; |
| 989 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | |
Bartlomiej Zolnierkiewicz | 3a4e7c9 | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 991 | blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS, |
| 992 | THIS_MODULE, ata_probe, ata_lock, hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | return 1; |
| 994 | |
| 995 | out: |
| 996 | unregister_blkdev(hwif->major, hwif->name); |
| 997 | return 0; |
| 998 | } |
| 999 | |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1000 | static void hwif_register_devices(ide_hwif_t *hwif) |
| 1001 | { |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1002 | ide_drive_t *drive; |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1003 | unsigned int i; |
| 1004 | |
Bartlomiej Zolnierkiewicz | 7ed5b15 | 2009-03-24 23:22:41 +0100 | [diff] [blame] | 1005 | ide_port_for_each_present_dev(i, drive, hwif) { |
Bartlomiej Zolnierkiewicz | c5d70cc | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1006 | struct device *dev = &drive->gendev; |
| 1007 | int ret; |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1008 | |
Kay Sievers | dc09c78 | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 1009 | dev_set_name(dev, "%u.%u", hwif->index, i); |
Bartlomiej Zolnierkiewicz | c5d70cc | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1010 | dev->parent = &hwif->gendev; |
| 1011 | dev->bus = &ide_bus_type; |
| 1012 | dev->driver_data = drive; |
| 1013 | dev->release = drive_release_dev; |
| 1014 | |
| 1015 | ret = device_register(dev); |
| 1016 | if (ret < 0) |
| 1017 | printk(KERN_WARNING "IDE: %s: device_register error: " |
| 1018 | "%d\n", __func__, ret); |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1019 | } |
| 1020 | } |
| 1021 | |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1022 | static void ide_port_init_devices(ide_hwif_t *hwif) |
| 1023 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1024 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1025 | ide_drive_t *drive; |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1026 | int i; |
| 1027 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1028 | ide_port_for_each_dev(i, drive, hwif) { |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 1029 | drive->dn = i + hwif->channel * 2; |
| 1030 | |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1031 | if (hwif->host_flags & IDE_HFLAG_IO_32BIT) |
| 1032 | drive->io_32bit = 1; |
Bartlomiej Zolnierkiewicz | 7610c4f | 2009-03-24 23:22:38 +0100 | [diff] [blame] | 1033 | if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) |
| 1034 | drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT; |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1035 | if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS) |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1036 | drive->dev_flags |= IDE_DFLAG_UNMASK; |
Bartlomiej Zolnierkiewicz | 807b90d | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 1037 | if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS) |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1038 | drive->dev_flags |= IDE_DFLAG_NO_UNMASK; |
Bartlomiej Zolnierkiewicz | 1f2cf8b | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 1039 | |
Bartlomiej Zolnierkiewicz | e6d95bd | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 1040 | if (port_ops && port_ops->init_dev) |
| 1041 | port_ops->init_dev(drive); |
| 1042 | } |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1043 | } |
| 1044 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1045 | static void ide_init_port(ide_hwif_t *hwif, unsigned int port, |
| 1046 | const struct ide_port_info *d) |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1047 | { |
Adrian Bunk | b769164 | 2008-06-10 20:56:36 +0200 | [diff] [blame] | 1048 | hwif->channel = port; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1049 | |
| 1050 | if (d->chipset) |
| 1051 | hwif->chipset = d->chipset; |
| 1052 | |
| 1053 | if (d->init_iops) |
| 1054 | d->init_iops(hwif); |
| 1055 | |
Bartlomiej Zolnierkiewicz | 23f8e4b | 2008-05-01 14:08:51 +0200 | [diff] [blame] | 1056 | /* ->host_flags may be set by ->init_iops (or even earlier...) */ |
| 1057 | hwif->host_flags |= d->host_flags; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1058 | hwif->pio_mask = d->pio_mask; |
| 1059 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 1060 | if (d->tp_ops) |
| 1061 | hwif->tp_ops = d->tp_ops; |
| 1062 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1063 | /* ->set_pio_mode for DTC2278 is currently limited to port 0 */ |
Bartlomiej Zolnierkiewicz | 2787cb8 | 2009-03-27 12:46:28 +0100 | [diff] [blame] | 1064 | if ((hwif->host_flags & IDE_HFLAG_DTC2278) == 0 || hwif->channel == 0) |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1065 | hwif->port_ops = d->port_ops; |
| 1066 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1067 | hwif->swdma_mask = d->swdma_mask; |
| 1068 | hwif->mwdma_mask = d->mwdma_mask; |
| 1069 | hwif->ultra_mask = d->udma_mask; |
| 1070 | |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1071 | if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) { |
| 1072 | int rc; |
| 1073 | |
Sergei Shtylyov | 592b531 | 2009-01-06 17:21:02 +0100 | [diff] [blame] | 1074 | hwif->dma_ops = d->dma_ops; |
| 1075 | |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1076 | if (d->init_dma) |
| 1077 | rc = d->init_dma(hwif, d); |
| 1078 | else |
| 1079 | rc = ide_hwif_setup_dma(hwif, d); |
| 1080 | |
| 1081 | if (rc < 0) { |
| 1082 | printk(KERN_INFO "%s: DMA disabled\n", hwif->name); |
Sergei Shtylyov | 592b531 | 2009-01-06 17:21:02 +0100 | [diff] [blame] | 1083 | |
| 1084 | hwif->dma_ops = NULL; |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 1085 | hwif->dma_base = 0; |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1086 | hwif->swdma_mask = 0; |
| 1087 | hwif->mwdma_mask = 0; |
| 1088 | hwif->ultra_mask = 0; |
Sergei Shtylyov | 592b531 | 2009-01-06 17:21:02 +0100 | [diff] [blame] | 1089 | } |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1090 | } |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1091 | |
Bartlomiej Zolnierkiewicz | 1024c5f | 2008-05-04 17:03:41 +0200 | [diff] [blame] | 1092 | if ((d->host_flags & IDE_HFLAG_SERIALIZE) || |
Bartlomiej Zolnierkiewicz | 702c026 | 2008-12-29 20:27:36 +0100 | [diff] [blame] | 1093 | ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) |
| 1094 | hwif->host->host_flags |= IDE_HFLAG_SERIALIZE; |
Bartlomiej Zolnierkiewicz | 1024c5f | 2008-05-04 17:03:41 +0200 | [diff] [blame] | 1095 | |
Bartlomiej Zolnierkiewicz | 6b49249 | 2008-12-29 20:27:34 +0100 | [diff] [blame] | 1096 | if (d->max_sectors) |
| 1097 | hwif->rqsize = d->max_sectors; |
Bartlomiej Zolnierkiewicz | 70775e9 | 2009-03-27 12:46:18 +0100 | [diff] [blame] | 1098 | else { |
| 1099 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) || |
| 1100 | (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA)) |
| 1101 | hwif->rqsize = 256; |
| 1102 | else |
| 1103 | hwif->rqsize = 65536; |
| 1104 | } |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1105 | |
| 1106 | /* call chipset specific routine for each enabled port */ |
| 1107 | if (d->init_hwif) |
| 1108 | d->init_hwif(hwif); |
Bartlomiej Zolnierkiewicz | c7f6f21 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1109 | } |
Bartlomiej Zolnierkiewicz | bfa14b4 | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1110 | |
Bartlomiej Zolnierkiewicz | c7f6f21 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1111 | static void ide_port_cable_detect(ide_hwif_t *hwif) |
| 1112 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1113 | const struct ide_port_ops *port_ops = hwif->port_ops; |
| 1114 | |
| 1115 | if (port_ops && port_ops->cable_detect && (hwif->ultra_mask & 0x78)) { |
Bartlomiej Zolnierkiewicz | bfa14b4 | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1116 | if (hwif->cbl != ATA_CBL_PATA40_SHORT) |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1117 | hwif->cbl = port_ops->cable_detect(hwif); |
Bartlomiej Zolnierkiewicz | bfa14b4 | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1118 | } |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1119 | } |
| 1120 | |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 1121 | static const u8 ide_hwif_to_major[] = |
| 1122 | { IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR, IDE4_MAJOR, |
| 1123 | IDE5_MAJOR, IDE6_MAJOR, IDE7_MAJOR, IDE8_MAJOR, IDE9_MAJOR }; |
| 1124 | |
| 1125 | static void ide_port_init_devices_data(ide_hwif_t *hwif) |
| 1126 | { |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1127 | ide_drive_t *drive; |
| 1128 | int i; |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 1129 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1130 | ide_port_for_each_dev(i, drive, hwif) { |
| 1131 | u8 j = (hwif->index * MAX_DRIVES) + i; |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 1132 | |
| 1133 | memset(drive, 0, sizeof(*drive)); |
| 1134 | |
| 1135 | drive->media = ide_disk; |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1136 | drive->select = (i << 4) | ATA_DEVICE_OBS; |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 1137 | drive->hwif = hwif; |
| 1138 | drive->ready_stat = ATA_DRDY; |
| 1139 | drive->bad_wstat = BAD_W_STAT; |
| 1140 | drive->special.b.recalibrate = 1; |
| 1141 | drive->special.b.set_geometry = 1; |
| 1142 | drive->name[0] = 'h'; |
| 1143 | drive->name[1] = 'd'; |
| 1144 | drive->name[2] = 'a' + j; |
| 1145 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
| 1146 | |
| 1147 | INIT_LIST_HEAD(&drive->list); |
| 1148 | init_completion(&drive->gendev_rel_comp); |
| 1149 | } |
| 1150 | } |
| 1151 | |
| 1152 | static void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
| 1153 | { |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 1154 | /* fill in any non-zero initial values */ |
| 1155 | hwif->index = index; |
| 1156 | hwif->major = ide_hwif_to_major[index]; |
| 1157 | |
| 1158 | hwif->name[0] = 'i'; |
| 1159 | hwif->name[1] = 'd'; |
| 1160 | hwif->name[2] = 'e'; |
| 1161 | hwif->name[3] = '0' + index; |
| 1162 | |
Bartlomiej Zolnierkiewicz | 7362951 | 2009-03-24 23:22:39 +0100 | [diff] [blame] | 1163 | spin_lock_init(&hwif->lock); |
| 1164 | |
| 1165 | init_timer(&hwif->timer); |
| 1166 | hwif->timer.function = &ide_timer_expiry; |
| 1167 | hwif->timer.data = (unsigned long)hwif; |
| 1168 | |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 1169 | init_completion(&hwif->gendev_rel_comp); |
| 1170 | |
| 1171 | hwif->tp_ops = &default_tp_ops; |
| 1172 | |
| 1173 | ide_port_init_devices_data(hwif); |
| 1174 | } |
| 1175 | |
| 1176 | static void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
| 1177 | { |
| 1178 | memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports)); |
| 1179 | hwif->irq = hw->irq; |
| 1180 | hwif->chipset = hw->chipset; |
| 1181 | hwif->dev = hw->dev; |
| 1182 | hwif->gendev.parent = hw->parent ? hw->parent : hw->dev; |
| 1183 | hwif->ack_intr = hw->ack_intr; |
| 1184 | hwif->config_data = hw->config; |
| 1185 | } |
| 1186 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1187 | static unsigned int ide_indexes; |
| 1188 | |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1189 | /** |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1190 | * ide_find_port_slot - find free port slot |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1191 | * @d: IDE port info |
| 1192 | * |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1193 | * 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] | 1194 | */ |
| 1195 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1196 | static int ide_find_port_slot(const struct ide_port_info *d) |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1197 | { |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1198 | int idx = -ENOENT; |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1199 | u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1; |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1200 | 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] | 1201 | |
| 1202 | /* |
| 1203 | * Claim an unassigned slot. |
| 1204 | * |
| 1205 | * Give preference to claiming other slots before claiming ide0/ide1, |
| 1206 | * just in case there's another interface yet-to-be-scanned |
| 1207 | * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults). |
| 1208 | * |
| 1209 | * Unless there is a bootable card that does not use the standard |
| 1210 | * ports 0x1f0/0x170 (the ide0/ide1 defaults). |
| 1211 | */ |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1212 | mutex_lock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 1213 | if (bootable) { |
| 1214 | if ((ide_indexes | i) != (1 << MAX_HWIFS) - 1) |
| 1215 | idx = ffz(ide_indexes | i); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1216 | } else { |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 1217 | if ((ide_indexes | 3) != (1 << MAX_HWIFS) - 1) |
| 1218 | idx = ffz(ide_indexes | 3); |
| 1219 | else if ((ide_indexes & 3) != 3) |
| 1220 | idx = ffz(ide_indexes); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1221 | } |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1222 | if (idx >= 0) |
| 1223 | ide_indexes |= (1 << idx); |
| 1224 | mutex_unlock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1225 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1226 | return idx; |
| 1227 | } |
Bartlomiej Zolnierkiewicz | eb3aff5 | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 1228 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1229 | static void ide_free_port_slot(int idx) |
| 1230 | { |
| 1231 | mutex_lock(&ide_cfg_mtx); |
| 1232 | ide_indexes &= ~(1 << idx); |
| 1233 | mutex_unlock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1234 | } |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1235 | |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1236 | static void ide_port_free_devices(ide_hwif_t *hwif) |
| 1237 | { |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1238 | ide_drive_t *drive; |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1239 | int i; |
| 1240 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1241 | ide_port_for_each_dev(i, drive, hwif) |
| 1242 | kfree(drive); |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1243 | } |
| 1244 | |
| 1245 | static int ide_port_alloc_devices(ide_hwif_t *hwif, int node) |
| 1246 | { |
| 1247 | int i; |
| 1248 | |
| 1249 | for (i = 0; i < MAX_DRIVES; i++) { |
| 1250 | ide_drive_t *drive; |
| 1251 | |
| 1252 | drive = kzalloc_node(sizeof(*drive), GFP_KERNEL, node); |
| 1253 | if (drive == NULL) |
| 1254 | goto out_nomem; |
| 1255 | |
| 1256 | hwif->devices[i] = drive; |
| 1257 | } |
| 1258 | return 0; |
| 1259 | |
| 1260 | out_nomem: |
| 1261 | ide_port_free_devices(hwif); |
| 1262 | return -ENOMEM; |
| 1263 | } |
| 1264 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1265 | 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] | 1266 | { |
| 1267 | struct ide_host *host; |
Bartlomiej Zolnierkiewicz | a32296f | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1268 | struct device *dev = hws[0] ? hws[0]->dev : NULL; |
| 1269 | int node = dev ? dev_to_node(dev) : -1; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1270 | int i; |
| 1271 | |
Bartlomiej Zolnierkiewicz | a32296f | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1272 | host = kzalloc_node(sizeof(*host), GFP_KERNEL, node); |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1273 | if (host == NULL) |
| 1274 | return NULL; |
| 1275 | |
Bartlomiej Zolnierkiewicz | a36223b | 2008-10-13 21:39:43 +0200 | [diff] [blame] | 1276 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1277 | ide_hwif_t *hwif; |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1278 | int idx; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1279 | |
| 1280 | if (hws[i] == NULL) |
| 1281 | continue; |
| 1282 | |
Bartlomiej Zolnierkiewicz | a32296f | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1283 | hwif = kzalloc_node(sizeof(*hwif), GFP_KERNEL, node); |
Bartlomiej Zolnierkiewicz | 18de101 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1284 | if (hwif == NULL) |
| 1285 | continue; |
| 1286 | |
Bartlomiej Zolnierkiewicz | 5e7f3a4 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1287 | if (ide_port_alloc_devices(hwif, node) < 0) { |
| 1288 | kfree(hwif); |
| 1289 | continue; |
| 1290 | } |
| 1291 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1292 | idx = ide_find_port_slot(d); |
| 1293 | if (idx < 0) { |
| 1294 | printk(KERN_ERR "%s: no free slot for interface\n", |
| 1295 | d ? d->name : "ide"); |
Bartlomiej Zolnierkiewicz | 18de101 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1296 | kfree(hwif); |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1297 | continue; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1298 | } |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1299 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1300 | ide_init_port_data(hwif, idx); |
| 1301 | |
Bartlomiej Zolnierkiewicz | 08da591 | 2008-07-24 22:53:15 +0200 | [diff] [blame] | 1302 | hwif->host = host; |
| 1303 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1304 | host->ports[i] = hwif; |
| 1305 | host->n_ports++; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1306 | } |
| 1307 | |
| 1308 | if (host->n_ports == 0) { |
| 1309 | kfree(host); |
| 1310 | return NULL; |
| 1311 | } |
| 1312 | |
Bartlomiej Zolnierkiewicz | a32296f | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1313 | host->dev[0] = dev; |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 1314 | |
Bartlomiej Zolnierkiewicz | feb22b7 | 2008-10-10 22:39:32 +0200 | [diff] [blame] | 1315 | if (d) { |
| 1316 | host->init_chipset = d->init_chipset; |
Bartlomiej Zolnierkiewicz | e354c1d | 2009-03-27 12:46:22 +0100 | [diff] [blame] | 1317 | host->get_lock = d->get_lock; |
| 1318 | host->release_lock = d->release_lock; |
Bartlomiej Zolnierkiewicz | ef0b042 | 2008-07-24 22:53:19 +0200 | [diff] [blame] | 1319 | host->host_flags = d->host_flags; |
Bartlomiej Zolnierkiewicz | feb22b7 | 2008-10-10 22:39:32 +0200 | [diff] [blame] | 1320 | } |
Bartlomiej Zolnierkiewicz | ef0b042 | 2008-07-24 22:53:19 +0200 | [diff] [blame] | 1321 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1322 | return host; |
| 1323 | } |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1324 | EXPORT_SYMBOL_GPL(ide_host_alloc); |
| 1325 | |
Bartlomiej Zolnierkiewicz | 9a100f4 | 2009-02-02 20:12:21 +0100 | [diff] [blame] | 1326 | static void ide_port_free(ide_hwif_t *hwif) |
| 1327 | { |
| 1328 | ide_port_free_devices(hwif); |
| 1329 | ide_free_port_slot(hwif->index); |
| 1330 | kfree(hwif); |
| 1331 | } |
| 1332 | |
| 1333 | static void ide_disable_port(ide_hwif_t *hwif) |
| 1334 | { |
| 1335 | struct ide_host *host = hwif->host; |
| 1336 | int i; |
| 1337 | |
| 1338 | printk(KERN_INFO "%s: disabling port\n", hwif->name); |
| 1339 | |
| 1340 | for (i = 0; i < MAX_HOST_PORTS; i++) { |
| 1341 | if (host->ports[i] == hwif) { |
| 1342 | host->ports[i] = NULL; |
| 1343 | host->n_ports--; |
| 1344 | } |
| 1345 | } |
| 1346 | |
| 1347 | ide_port_free(hwif); |
| 1348 | } |
| 1349 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1350 | int ide_host_register(struct ide_host *host, const struct ide_port_info *d, |
| 1351 | hw_regs_t **hws) |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1352 | { |
| 1353 | ide_hwif_t *hwif, *mate = NULL; |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1354 | int i, j = 0; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1355 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1356 | ide_host_for_each_port(i, hwif, host) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1357 | if (hwif == NULL) { |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1358 | mate = NULL; |
| 1359 | continue; |
| 1360 | } |
| 1361 | |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 1362 | ide_init_port_hw(hwif, hws[i]); |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 1363 | ide_port_apply_params(hwif); |
| 1364 | |
Bartlomiej Zolnierkiewicz | 0a6e49e | 2009-03-27 12:46:27 +0100 | [diff] [blame] | 1365 | if ((i & 1) && mate) { |
| 1366 | hwif->mate = mate; |
| 1367 | mate->mate = hwif; |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 1368 | } |
| 1369 | |
Bartlomiej Zolnierkiewicz | 0a6e49e | 2009-03-27 12:46:27 +0100 | [diff] [blame] | 1370 | mate = (i & 1) ? NULL : hwif; |
| 1371 | |
| 1372 | ide_init_port(hwif, i & 1, d); |
| 1373 | ide_port_cable_detect(hwif); |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1374 | ide_port_init_devices(hwif); |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1375 | } |
| 1376 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1377 | ide_host_for_each_port(i, hwif, host) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1378 | if (hwif == NULL) |
| 1379 | continue; |
Bartlomiej Zolnierkiewicz | 139ddfc | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1380 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1381 | if (ide_probe_port(hwif) == 0) |
| 1382 | hwif->present = 1; |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1383 | |
Bartlomiej Zolnierkiewicz | c094ea0 | 2009-03-27 12:46:28 +0100 | [diff] [blame] | 1384 | if ((hwif->host_flags & IDE_HFLAG_4DRIVES) == 0 || |
| 1385 | hwif->mate == NULL || hwif->mate->present == 0) { |
Bartlomiej Zolnierkiewicz | 9a100f4 | 2009-02-02 20:12:21 +0100 | [diff] [blame] | 1386 | if (ide_register_port(hwif)) { |
| 1387 | ide_disable_port(hwif); |
| 1388 | continue; |
| 1389 | } |
| 1390 | } |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1391 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1392 | if (hwif->present) |
| 1393 | ide_port_tune_devices(hwif); |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1394 | } |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1395 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1396 | ide_host_for_each_port(i, hwif, host) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1397 | if (hwif == NULL) |
| 1398 | continue; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1399 | |
| 1400 | if (hwif_init(hwif) == 0) { |
| 1401 | printk(KERN_INFO "%s: failed to initialize IDE " |
| 1402 | "interface\n", hwif->name); |
Ian Campbell | 51d6ac7 | 2009-02-02 20:12:22 +0100 | [diff] [blame] | 1403 | device_unregister(&hwif->gendev); |
| 1404 | ide_disable_port(hwif); |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1405 | continue; |
| 1406 | } |
Bartlomiej Zolnierkiewicz | decdc3f | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1407 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1408 | if (hwif->present) |
Elias Oltmanns | e415e49 | 2008-10-13 21:39:45 +0200 | [diff] [blame] | 1409 | if (ide_port_setup_devices(hwif) == 0) { |
| 1410 | hwif->present = 0; |
| 1411 | continue; |
| 1412 | } |
| 1413 | |
| 1414 | j++; |
Bartlomiej Zolnierkiewicz | 26042d0 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1415 | |
Bartlomiej Zolnierkiewicz | 8b803bd | 2009-03-24 23:22:41 +0100 | [diff] [blame] | 1416 | ide_acpi_init_port(hwif); |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1417 | |
| 1418 | if (hwif->present) |
| 1419 | ide_acpi_port_init_devices(hwif); |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1420 | } |
| 1421 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1422 | ide_host_for_each_port(i, hwif, host) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1423 | if (hwif == NULL) |
| 1424 | continue; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1425 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1426 | if (hwif->present) |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1427 | hwif_register_devices(hwif); |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1428 | } |
| 1429 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1430 | ide_host_for_each_port(i, hwif, host) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1431 | if (hwif == NULL) |
| 1432 | continue; |
Bartlomiej Zolnierkiewicz | 327617e | 2008-02-02 19:56:43 +0100 | [diff] [blame] | 1433 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1434 | ide_sysfs_register_port(hwif); |
| 1435 | ide_proc_register_port(hwif); |
| 1436 | |
| 1437 | if (hwif->present) |
Bartlomiej Zolnierkiewicz | d9270a3 | 2008-02-02 19:56:43 +0100 | [diff] [blame] | 1438 | ide_proc_port_register_devices(hwif); |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1439 | } |
| 1440 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1441 | return j ? 0 : -1; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1442 | } |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1443 | EXPORT_SYMBOL_GPL(ide_host_register); |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1444 | |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1445 | int ide_host_add(const struct ide_port_info *d, hw_regs_t **hws, |
| 1446 | struct ide_host **hostp) |
| 1447 | { |
| 1448 | struct ide_host *host; |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1449 | int rc; |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1450 | |
| 1451 | host = ide_host_alloc(d, hws); |
| 1452 | if (host == NULL) |
| 1453 | return -ENOMEM; |
| 1454 | |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1455 | rc = ide_host_register(host, d, hws); |
| 1456 | if (rc) { |
| 1457 | ide_host_free(host); |
| 1458 | return rc; |
| 1459 | } |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1460 | |
| 1461 | if (hostp) |
| 1462 | *hostp = host; |
| 1463 | |
| 1464 | return 0; |
| 1465 | } |
| 1466 | EXPORT_SYMBOL_GPL(ide_host_add); |
| 1467 | |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 1468 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
| 1469 | { |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1470 | ide_drive_t *drive; |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 1471 | int i; |
| 1472 | |
Bartlomiej Zolnierkiewicz | 7ed5b15 | 2009-03-24 23:22:41 +0100 | [diff] [blame] | 1473 | ide_port_for_each_present_dev(i, drive, hwif) { |
| 1474 | device_unregister(&drive->gendev); |
| 1475 | wait_for_completion(&drive->gendev_rel_comp); |
Bartlomiej Zolnierkiewicz | b40d1b8 | 2009-01-06 17:20:51 +0100 | [diff] [blame] | 1476 | } |
| 1477 | } |
| 1478 | |
| 1479 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
| 1480 | { |
| 1481 | mutex_lock(&ide_cfg_mtx); |
| 1482 | __ide_port_unregister_devices(hwif); |
| 1483 | hwif->present = 0; |
| 1484 | ide_port_init_devices_data(hwif); |
| 1485 | mutex_unlock(&ide_cfg_mtx); |
| 1486 | } |
| 1487 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); |
| 1488 | |
| 1489 | /** |
| 1490 | * ide_unregister - free an IDE interface |
| 1491 | * @hwif: IDE interface |
| 1492 | * |
| 1493 | * Perform the final unregister of an IDE interface. |
| 1494 | * |
| 1495 | * Locking: |
| 1496 | * The caller must not hold the IDE locks. |
| 1497 | * |
| 1498 | * It is up to the caller to be sure there is no pending I/O here, |
| 1499 | * and that the interface will not be reopened (present/vanishing |
| 1500 | * locking isn't yet done BTW). |
| 1501 | */ |
| 1502 | |
| 1503 | static void ide_unregister(ide_hwif_t *hwif) |
| 1504 | { |
| 1505 | BUG_ON(in_interrupt()); |
| 1506 | BUG_ON(irqs_disabled()); |
| 1507 | |
| 1508 | mutex_lock(&ide_cfg_mtx); |
| 1509 | |
| 1510 | if (hwif->present) { |
| 1511 | __ide_port_unregister_devices(hwif); |
| 1512 | hwif->present = 0; |
| 1513 | } |
| 1514 | |
| 1515 | ide_proc_unregister_port(hwif); |
| 1516 | |
| 1517 | free_irq(hwif->irq, hwif); |
| 1518 | |
| 1519 | device_unregister(hwif->portdev); |
| 1520 | device_unregister(&hwif->gendev); |
| 1521 | wait_for_completion(&hwif->gendev_rel_comp); |
| 1522 | |
| 1523 | /* |
| 1524 | * Remove us from the kernel's knowledge |
| 1525 | */ |
| 1526 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); |
| 1527 | kfree(hwif->sg_table); |
| 1528 | unregister_blkdev(hwif->major, hwif->name); |
| 1529 | |
| 1530 | ide_release_dma_engine(hwif); |
| 1531 | |
| 1532 | mutex_unlock(&ide_cfg_mtx); |
| 1533 | } |
| 1534 | |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1535 | void ide_host_free(struct ide_host *host) |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1536 | { |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1537 | ide_hwif_t *hwif; |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1538 | int i; |
| 1539 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1540 | ide_host_for_each_port(i, hwif, host) { |
Bartlomiej Zolnierkiewicz | 9a100f4 | 2009-02-02 20:12:21 +0100 | [diff] [blame] | 1541 | if (hwif) |
| 1542 | ide_port_free(hwif); |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 1543 | } |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1544 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1545 | kfree(host); |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1546 | } |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1547 | EXPORT_SYMBOL_GPL(ide_host_free); |
| 1548 | |
| 1549 | void ide_host_remove(struct ide_host *host) |
| 1550 | { |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1551 | ide_hwif_t *hwif; |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1552 | int i; |
| 1553 | |
Bartlomiej Zolnierkiewicz | 2bd24a1 | 2009-01-06 17:20:56 +0100 | [diff] [blame] | 1554 | ide_host_for_each_port(i, hwif, host) { |
| 1555 | if (hwif) |
| 1556 | ide_unregister(hwif); |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1557 | } |
| 1558 | |
| 1559 | ide_host_free(host); |
| 1560 | } |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1561 | EXPORT_SYMBOL_GPL(ide_host_remove); |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1562 | |
| 1563 | void ide_port_scan(ide_hwif_t *hwif) |
| 1564 | { |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 1565 | ide_port_apply_params(hwif); |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1566 | ide_port_cable_detect(hwif); |
| 1567 | ide_port_init_devices(hwif); |
| 1568 | |
| 1569 | if (ide_probe_port(hwif) < 0) |
| 1570 | return; |
| 1571 | |
| 1572 | hwif->present = 1; |
| 1573 | |
| 1574 | ide_port_tune_devices(hwif); |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1575 | ide_port_setup_devices(hwif); |
Bartlomiej Zolnierkiewicz | e630fcb | 2009-01-06 17:21:00 +0100 | [diff] [blame] | 1576 | ide_acpi_port_init_devices(hwif); |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1577 | hwif_register_devices(hwif); |
| 1578 | ide_proc_port_register_devices(hwif); |
| 1579 | } |
| 1580 | EXPORT_SYMBOL_GPL(ide_port_scan); |