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 | |
| 104 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | * do_identify - identify a drive |
| 106 | * @drive: drive to identify |
| 107 | * @cmd: command used |
| 108 | * |
| 109 | * Called when we have issued a drive identify command to |
| 110 | * read and parse the results. This function is run with |
| 111 | * interrupts disabled. |
| 112 | */ |
| 113 | |
| 114 | static inline void do_identify (ide_drive_t *drive, u8 cmd) |
| 115 | { |
| 116 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 117 | u16 *id = drive->id; |
| 118 | char *m = (char *)&id[ATA_ID_PROD]; |
Bartlomiej Zolnierkiewicz | 718c72e | 2008-10-10 22:39:31 +0200 | [diff] [blame] | 119 | int bswap = 1, is_cfa; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | /* read 512 bytes of id info */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 122 | hwif->tp_ops->input_data(drive, NULL, id, SECTOR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 124 | drive->dev_flags |= IDE_DFLAG_ID_READ; |
| 125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | local_irq_enable(); |
Bartlomiej Zolnierkiewicz | 7b9f25b | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 127 | #ifdef DEBUG |
| 128 | printk(KERN_INFO "%s: dumping identify data\n", drive->name); |
| 129 | ide_dump_identify((u8 *)id); |
| 130 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | ide_fix_driveid(id); |
| 132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | /* |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 134 | * ATA_CMD_ID_ATA returns little-endian info, |
| 135 | * ATA_CMD_ID_ATAPI *usually* returns little-endian info. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 137 | if (cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 138 | if ((m[0] == 'N' && m[1] == 'E') || /* NEC */ |
| 139 | (m[0] == 'F' && m[1] == 'X') || /* Mitsumi */ |
| 140 | (m[0] == 'P' && m[1] == 'i')) /* Pioneer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | /* Vertos drives may still be weird */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 142 | bswap ^= 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | } |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 144 | |
| 145 | ide_fixstring(m, ATA_ID_PROD_LEN, bswap); |
| 146 | ide_fixstring((char *)&id[ATA_ID_FW_REV], ATA_ID_FW_REV_LEN, bswap); |
| 147 | ide_fixstring((char *)&id[ATA_ID_SERNO], ATA_ID_SERNO_LEN, bswap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
Tejun Heo | 699b052 | 2007-11-05 21:42:25 +0100 | [diff] [blame] | 149 | /* we depend on this a lot! */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 150 | m[ATA_ID_PROD_LEN - 1] = '\0'; |
Tejun Heo | 699b052 | 2007-11-05 21:42:25 +0100 | [diff] [blame] | 151 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 152 | if (strstr(m, "E X A B Y T E N E S T")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | goto err_misc; |
| 154 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 155 | printk(KERN_INFO "%s: %s, ", drive->name, m); |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 156 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 157 | drive->dev_flags |= IDE_DFLAG_PRESENT; |
| 158 | drive->dev_flags &= ~IDE_DFLAG_DEAD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
| 160 | /* |
| 161 | * Check for an ATAPI device |
| 162 | */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 163 | if (cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 164 | u8 type = (id[ATA_ID_CONFIG] >> 8) & 0x1f; |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 165 | |
| 166 | printk(KERN_CONT "ATAPI "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | switch (type) { |
| 168 | case ide_floppy: |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 169 | if (!strstr(m, "CD-ROM")) { |
| 170 | if (!strstr(m, "oppy") && |
| 171 | !strstr(m, "poyp") && |
| 172 | !strstr(m, "ZIP")) |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 173 | printk(KERN_CONT "cdrom or floppy?, assuming "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | if (drive->media != ide_cdrom) { |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 175 | printk(KERN_CONT "FLOPPY"); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 176 | drive->dev_flags |= IDE_DFLAG_REMOVABLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | break; |
| 178 | } |
| 179 | } |
| 180 | /* Early cdrom models used zero */ |
| 181 | type = ide_cdrom; |
| 182 | case ide_cdrom: |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 183 | drive->dev_flags |= IDE_DFLAG_REMOVABLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | #ifdef CONFIG_PPC |
| 185 | /* kludge for Apple PowerBook internal zip */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 186 | if (!strstr(m, "CD-ROM") && strstr(m, "ZIP")) { |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 187 | printk(KERN_CONT "FLOPPY"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | type = ide_floppy; |
| 189 | break; |
| 190 | } |
| 191 | #endif |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 192 | printk(KERN_CONT "CD/DVD-ROM"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | break; |
| 194 | case ide_tape: |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 195 | printk(KERN_CONT "TAPE"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | break; |
| 197 | case ide_optical: |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 198 | printk(KERN_CONT "OPTICAL"); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 199 | drive->dev_flags |= IDE_DFLAG_REMOVABLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | break; |
| 201 | default: |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 202 | printk(KERN_CONT "UNKNOWN (type %d)", type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | break; |
| 204 | } |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 205 | printk(KERN_CONT " drive\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | drive->media = type; |
| 207 | /* an ATAPI device ignores DRDY */ |
| 208 | drive->ready_stat = 0; |
| 209 | return; |
| 210 | } |
| 211 | |
| 212 | /* |
| 213 | * Not an ATAPI device: looks like a "regular" hard disk |
| 214 | */ |
Richard Purdie | 9810933 | 2006-02-03 03:04:55 -0800 | [diff] [blame] | 215 | |
Bartlomiej Zolnierkiewicz | 718c72e | 2008-10-10 22:39:31 +0200 | [diff] [blame] | 216 | is_cfa = ata_id_is_cfa(id); |
| 217 | |
| 218 | /* CF devices are *not* removable in Linux definition of the term */ |
| 219 | if (is_cfa == 0 && (id[ATA_ID_CONFIG] & (1 << 7))) |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 220 | drive->dev_flags |= IDE_DFLAG_REMOVABLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | drive->media = ide_disk; |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 223 | |
Bartlomiej Zolnierkiewicz | 718c72e | 2008-10-10 22:39:31 +0200 | [diff] [blame] | 224 | printk(KERN_CONT "%s DISK drive\n", is_cfa ? "CFA" : "ATA"); |
Bartlomiej Zolnierkiewicz | cd3dbc9 | 2008-01-25 22:17:13 +0100 | [diff] [blame] | 225 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | return; |
| 227 | |
| 228 | err_misc: |
| 229 | kfree(id); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 230 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | return; |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * actual_try_to_identify - send ata/atapi identify |
| 236 | * @drive: drive to identify |
| 237 | * @cmd: command to use |
| 238 | * |
| 239 | * try_to_identify() sends an ATA(PI) IDENTIFY request to a drive |
| 240 | * and waits for a response. It also monitors irqs while this is |
| 241 | * happening, in hope of automatically determining which one is |
| 242 | * being used by the interface. |
| 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 | |
| 249 | static int actual_try_to_identify (ide_drive_t *drive, u8 cmd) |
| 250 | { |
| 251 | ide_hwif_t *hwif = HWIF(drive); |
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 | |
| 258 | /* take a deep breath */ |
| 259 | msleep(50); |
| 260 | |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 261 | if (io_ports->ctl_addr) { |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 262 | a = tp_ops->read_altstatus(hwif); |
| 263 | s = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 264 | if ((a ^ s) & ~ATA_IDX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | /* ancient Seagate drives, broken interfaces */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 266 | printk(KERN_INFO "%s: probing with STATUS(0x%02x) " |
| 267 | "instead of ALTSTATUS(0x%02x)\n", |
| 268 | drive->name, s, a); |
| 269 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | /* use non-intrusive polling */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 271 | use_altstatus = 1; |
| 272 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
| 274 | /* set features register for atapi |
| 275 | * identify command to be sure of reply |
| 276 | */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 277 | if (cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 4e65837 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 278 | ide_task_t task; |
| 279 | |
| 280 | memset(&task, 0, sizeof(task)); |
| 281 | /* disable DMA & overlap */ |
| 282 | task.tf_flags = IDE_TFLAG_OUT_FEATURE; |
| 283 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 284 | tp_ops->tf_load(drive, &task); |
Bartlomiej Zolnierkiewicz | 4e65837 | 2008-07-23 19:55:53 +0200 | [diff] [blame] | 285 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
| 287 | /* ask drive for ID */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 288 | tp_ops->exec_command(hwif, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 290 | timeout = ((cmd == ATA_CMD_ID_ATA) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2; |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 291 | |
| 292 | if (ide_busy_sleep(hwif, timeout, use_altstatus)) |
| 293 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 295 | /* wait for IRQ and ATA_DRQ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | msleep(50); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 297 | s = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 298 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 299 | if (OK_STAT(s, ATA_DRQ, BAD_R_STAT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | unsigned long flags; |
| 301 | |
| 302 | /* local CPU only; some systems need this */ |
| 303 | local_irq_save(flags); |
| 304 | /* drive returned ID */ |
| 305 | do_identify(drive, cmd); |
| 306 | /* drive responded with ID */ |
| 307 | rc = 0; |
| 308 | /* clear drive IRQ */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 309 | (void)tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | local_irq_restore(flags); |
| 311 | } else { |
| 312 | /* drive refused ID */ |
| 313 | rc = 2; |
| 314 | } |
| 315 | return rc; |
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * try_to_identify - try to identify a drive |
| 320 | * @drive: drive to probe |
| 321 | * @cmd: command to use |
| 322 | * |
| 323 | * Issue the identify command and then do IRQ probing to |
| 324 | * complete the identification when needed by finding the |
| 325 | * IRQ the drive is attached to |
| 326 | */ |
| 327 | |
| 328 | static int try_to_identify (ide_drive_t *drive, u8 cmd) |
| 329 | { |
| 330 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 331 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | int retval; |
| 333 | int autoprobe = 0; |
| 334 | unsigned long cookie = 0; |
| 335 | |
| 336 | /* |
| 337 | * Disable device irq unless we need to |
| 338 | * probe for it. Otherwise we'll get spurious |
| 339 | * interrupts during the identify-phase that |
| 340 | * the irq handler isn't expecting. |
| 341 | */ |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 342 | if (hwif->io_ports.ctl_addr) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | if (!hwif->irq) { |
| 344 | autoprobe = 1; |
| 345 | cookie = probe_irq_on(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | } |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 347 | tp_ops->set_irq(hwif, autoprobe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | retval = actual_try_to_identify(drive, cmd); |
| 351 | |
| 352 | if (autoprobe) { |
| 353 | int irq; |
Bartlomiej Zolnierkiewicz | 81ca691 | 2008-01-26 20:13:08 +0100 | [diff] [blame] | 354 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 355 | tp_ops->set_irq(hwif, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | /* clear drive IRQ */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 357 | (void)tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | udelay(5); |
| 359 | irq = probe_irq_off(cookie); |
| 360 | if (!hwif->irq) { |
| 361 | if (irq > 0) { |
| 362 | hwif->irq = irq; |
| 363 | } else { |
| 364 | /* Mmmm.. multiple IRQs.. |
| 365 | * don't know which was ours |
| 366 | */ |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 367 | printk(KERN_ERR "%s: IRQ probe failed (0x%lx)\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | drive->name, cookie); |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | return retval; |
| 373 | } |
| 374 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 375 | 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] | 376 | { |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 377 | u8 stat; |
| 378 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 379 | timeout += jiffies; |
| 380 | |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 381 | do { |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 382 | msleep(50); /* give drive a breather */ |
| 383 | stat = altstatus ? hwif->tp_ops->read_altstatus(hwif) |
| 384 | : hwif->tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 385 | if ((stat & ATA_BUSY) == 0) |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 386 | return 0; |
| 387 | } while (time_before(jiffies, timeout)); |
| 388 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 389 | return 1; /* drive timed-out */ |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 390 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 392 | static u8 ide_read_device(ide_drive_t *drive) |
| 393 | { |
| 394 | ide_task_t task; |
| 395 | |
| 396 | memset(&task, 0, sizeof(task)); |
| 397 | task.tf_flags = IDE_TFLAG_IN_DEVICE; |
| 398 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 399 | drive->hwif->tp_ops->tf_read(drive, &task); |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 400 | |
| 401 | return task.tf.device; |
| 402 | } |
| 403 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | /** |
| 405 | * do_probe - probe an IDE device |
| 406 | * @drive: drive to probe |
| 407 | * @cmd: command to use |
| 408 | * |
| 409 | * do_probe() has the difficult job of finding a drive if it exists, |
| 410 | * without getting hung up if it doesn't exist, without trampling on |
| 411 | * ethernet cards, and without leaving any IRQs dangling to haunt us later. |
| 412 | * |
| 413 | * If a drive is "known" to exist (from CMOS or kernel parameters), |
| 414 | * but does not respond right away, the probe will "hang in there" |
| 415 | * for the maximum wait time (about 30 seconds), otherwise it will |
| 416 | * exit much more quickly. |
| 417 | * |
| 418 | * Returns: 0 device was identified |
| 419 | * 1 device timed-out (no response to identify request) |
| 420 | * 2 device aborted the command (refused to identify itself) |
| 421 | * 3 bad status from device (possible for ATAPI drives) |
| 422 | * 4 probe was not attempted because failure was obvious |
| 423 | */ |
| 424 | |
| 425 | static int do_probe (ide_drive_t *drive, u8 cmd) |
| 426 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 428 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 429 | int rc; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 430 | u8 present = !!(drive->dev_flags & IDE_DFLAG_PRESENT), stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 432 | /* avoid waiting for inappropriate probes */ |
| 433 | if (present && drive->media != ide_disk && cmd == ATA_CMD_ID_ATA) |
| 434 | return 4; |
| 435 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | #ifdef DEBUG |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 437 | 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] | 438 | drive->name, present, drive->media, |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 439 | (cmd == ATA_CMD_ID_ATA) ? "ATA" : "ATAPI"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | #endif |
| 441 | |
| 442 | /* needed for some systems |
| 443 | * (e.g. crw9624 as drive0 with disk as slave) |
| 444 | */ |
| 445 | msleep(50); |
| 446 | SELECT_DRIVE(drive); |
| 447 | msleep(50); |
Bartlomiej Zolnierkiewicz | 1f2efb8 | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 448 | |
Bartlomiej Zolnierkiewicz | 7f612f2 | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 449 | if (ide_read_device(drive) != drive->select && present == 0) { |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 450 | if (drive->dn & 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | /* exit with drive0 selected */ |
| 452 | SELECT_DRIVE(&hwif->drives[0]); |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 453 | /* allow ATA_BUSY to assert & clear */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | msleep(50); |
| 455 | } |
| 456 | /* no i/f present: mmm.. this should be a 4 -ml */ |
| 457 | return 3; |
| 458 | } |
| 459 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 460 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 461 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 462 | if (OK_STAT(stat, ATA_DRDY, ATA_BUSY) || |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 463 | present || cmd == ATA_CMD_ID_ATAPI) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | /* send cmd and wait */ |
| 465 | if ((rc = try_to_identify(drive, cmd))) { |
| 466 | /* failed: try again */ |
| 467 | rc = try_to_identify(drive,cmd); |
| 468 | } |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 469 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 470 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 471 | |
Bartlomiej Zolnierkiewicz | 3a7d248 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 472 | if (stat == (ATA_BUSY | ATA_DRDY)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | return 4; |
| 474 | |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 475 | if (rc == 1 && cmd == ATA_CMD_ID_ATAPI) { |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 476 | printk(KERN_ERR "%s: no response (status = 0x%02x), " |
| 477 | "resetting drive\n", drive->name, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | msleep(50); |
Bartlomiej Zolnierkiewicz | e81a3bd | 2008-07-15 21:21:48 +0200 | [diff] [blame] | 479 | SELECT_DRIVE(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | msleep(50); |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 481 | tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET); |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 482 | (void)ide_busy_sleep(hwif, WAIT_WORSTCASE, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | rc = try_to_identify(drive, cmd); |
| 484 | } |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 485 | |
| 486 | /* ensure drive IRQ is clear */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 487 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 488 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | if (rc == 1) |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 490 | printk(KERN_ERR "%s: no response (status = 0x%02x)\n", |
| 491 | drive->name, stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | } else { |
| 493 | /* not present or maybe ATAPI */ |
| 494 | rc = 3; |
| 495 | } |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 496 | if (drive->dn & 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | /* exit with drive0 selected */ |
| 498 | SELECT_DRIVE(&hwif->drives[0]); |
| 499 | msleep(50); |
| 500 | /* ensure drive irq is clear */ |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 501 | (void)tp_ops->read_status(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | } |
| 503 | return rc; |
| 504 | } |
| 505 | |
| 506 | /* |
| 507 | * |
| 508 | */ |
| 509 | static void enable_nest (ide_drive_t *drive) |
| 510 | { |
| 511 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 512 | const struct ide_tp_ops *tp_ops = hwif->tp_ops; |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 513 | u8 stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 515 | printk(KERN_INFO "%s: enabling %s -- ", |
| 516 | hwif->name, (char *)&drive->id[ATA_ID_PROD]); |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 517 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | SELECT_DRIVE(drive); |
| 519 | msleep(50); |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 520 | tp_ops->exec_command(hwif, ATA_EXABYTE_ENABLE_NEST); |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 521 | |
Bartlomiej Zolnierkiewicz | b163f46 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 522 | if (ide_busy_sleep(hwif, WAIT_WORSTCASE, 0)) { |
Bartlomiej Zolnierkiewicz | 3a5015c | 2008-01-26 20:13:09 +0100 | [diff] [blame] | 523 | printk(KERN_CONT "failed (timeout)\n"); |
| 524 | return; |
| 525 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
| 527 | msleep(50); |
| 528 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 529 | stat = tp_ops->read_status(hwif); |
Bartlomiej Zolnierkiewicz | 57b5527 | 2008-02-02 19:56:45 +0100 | [diff] [blame] | 530 | |
| 531 | if (!OK_STAT(stat, 0, BAD_STAT)) |
| 532 | printk(KERN_CONT "failed (status = 0x%02x)\n", stat); |
| 533 | else |
| 534 | printk(KERN_CONT "success\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | /** |
| 538 | * probe_for_drives - upper level drive probe |
| 539 | * @drive: drive to probe for |
| 540 | * |
| 541 | * probe_for_drive() tests for existence of a given drive using do_probe() |
| 542 | * and presents things to the user as needed. |
| 543 | * |
| 544 | * Returns: 0 no device was found |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 545 | * 1 device was found |
| 546 | * (note: IDE_DFLAG_PRESENT might still be not set) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | */ |
| 548 | |
| 549 | static inline u8 probe_for_drive (ide_drive_t *drive) |
| 550 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 551 | char *m; |
| 552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | /* |
| 554 | * In order to keep things simple we have an id |
| 555 | * block for all drives at all times. If the device |
| 556 | * is pre ATA or refuses ATA/ATAPI identify we |
| 557 | * will add faked data to this. |
| 558 | * |
| 559 | * Also note that 0 everywhere means "can't do X" |
| 560 | */ |
| 561 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 562 | drive->dev_flags &= ~IDE_DFLAG_ID_READ; |
| 563 | |
Bartlomiej Zolnierkiewicz | 151a670 | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 564 | drive->id = kzalloc(SECTOR_SIZE, GFP_KERNEL); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 565 | if (drive->id == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | printk(KERN_ERR "ide: out of memory for id data.\n"); |
| 567 | return 0; |
| 568 | } |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 569 | |
| 570 | m = (char *)&drive->id[ATA_ID_PROD]; |
| 571 | strcpy(m, "UNKNOWN"); |
| 572 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | /* skip probing? */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 574 | if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0) { |
Bartlomiej Zolnierkiewicz | c36a7e9 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 575 | retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | /* if !(success||timed-out) */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 577 | if (do_probe(drive, ATA_CMD_ID_ATA) >= 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | /* look for ATAPI device */ |
Bartlomiej Zolnierkiewicz | aaaade3 | 2008-10-10 22:39:21 +0200 | [diff] [blame] | 579 | (void)do_probe(drive, ATA_CMD_ID_ATAPI); |
Bartlomiej Zolnierkiewicz | c36a7e9 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 580 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 581 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | /* drive not found */ |
| 583 | return 0; |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 584 | |
Bartlomiej Zolnierkiewicz | c36a7e9 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 585 | if (strstr(m, "E X A B Y T E N E S T")) { |
Alan Cox | 7859557 | 2007-07-03 22:28:35 +0200 | [diff] [blame] | 586 | enable_nest(drive); |
Bartlomiej Zolnierkiewicz | c36a7e9 | 2008-10-10 22:39:23 +0200 | [diff] [blame] | 587 | goto retry; |
| 588 | } |
| 589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | /* identification failed? */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 591 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | if (drive->media == ide_disk) { |
| 593 | printk(KERN_INFO "%s: non-IDE drive, CHS=%d/%d/%d\n", |
| 594 | drive->name, drive->cyl, |
| 595 | drive->head, drive->sect); |
| 596 | } else if (drive->media == ide_cdrom) { |
| 597 | printk(KERN_INFO "%s: ATAPI cdrom (?)\n", drive->name); |
| 598 | } else { |
| 599 | /* nuke it */ |
| 600 | 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] | 601 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | } |
| 603 | } |
| 604 | /* drive was found */ |
| 605 | } |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 606 | |
| 607 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | return 0; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 609 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | /* The drive wasn't being helpful. Add generic info only */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 611 | if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | generic_id(drive); |
| 613 | return 1; |
| 614 | } |
| 615 | |
| 616 | if (drive->media == ide_disk) { |
| 617 | ide_disk_init_chs(drive); |
| 618 | ide_disk_init_mult_count(drive); |
| 619 | } |
| 620 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 621 | return !!(drive->dev_flags & IDE_DFLAG_PRESENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | } |
| 623 | |
Pavel Machek | fc41069 | 2008-07-23 19:56:02 +0200 | [diff] [blame] | 624 | static void hwif_release_dev(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | { |
| 626 | ide_hwif_t *hwif = container_of(dev, ide_hwif_t, gendev); |
| 627 | |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 628 | complete(&hwif->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | } |
| 630 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 631 | static int ide_register_port(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | { |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 633 | int ret; |
| 634 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | /* register with global device tree */ |
| 636 | strlcpy(hwif->gendev.bus_id,hwif->name,BUS_ID_SIZE); |
| 637 | hwif->gendev.driver_data = hwif; |
| 638 | if (hwif->gendev.parent == NULL) { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 639 | if (hwif->dev) |
| 640 | hwif->gendev.parent = hwif->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | else |
| 642 | /* Would like to do = &device_legacy */ |
| 643 | hwif->gendev.parent = NULL; |
| 644 | } |
| 645 | hwif->gendev.release = hwif_release_dev; |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 646 | ret = device_register(&hwif->gendev); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 647 | if (ret < 0) { |
Randy Dunlap | 349ae23 | 2006-10-03 01:14:23 -0700 | [diff] [blame] | 648 | printk(KERN_WARNING "IDE: %s: device_register error: %d\n", |
Harvey Harrison | eb63963 | 2008-04-26 22:25:20 +0200 | [diff] [blame] | 649 | __func__, ret); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 650 | goto out; |
| 651 | } |
| 652 | |
Greg Kroah-Hartman | 716ad87 | 2008-05-16 17:55:12 -0700 | [diff] [blame] | 653 | hwif->portdev = device_create_drvdata(ide_port_class, &hwif->gendev, |
| 654 | MKDEV(0, 0), hwif, hwif->name); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 655 | if (IS_ERR(hwif->portdev)) { |
| 656 | ret = PTR_ERR(hwif->portdev); |
| 657 | device_unregister(&hwif->gendev); |
| 658 | } |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 659 | out: |
| 660 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | } |
| 662 | |
Bartlomiej Zolnierkiewicz | c860a8f | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 663 | /** |
| 664 | * ide_port_wait_ready - wait for port to become ready |
| 665 | * @hwif: IDE port |
| 666 | * |
| 667 | * This is needed on some PPCs and a bunch of BIOS-less embedded |
| 668 | * platforms. Typical cases are: |
| 669 | * |
| 670 | * - The firmware hard reset the disk before booting the kernel, |
| 671 | * the drive is still doing it's poweron-reset sequence, that |
| 672 | * can take up to 30 seconds. |
| 673 | * |
| 674 | * - The firmware does nothing (or no firmware), the device is |
| 675 | * still in POST state (same as above actually). |
| 676 | * |
| 677 | * - Some CD/DVD/Writer combo drives tend to drive the bus during |
| 678 | * their reset sequence even when they are non-selected slave |
| 679 | * devices, thus preventing discovery of the main HD. |
| 680 | * |
| 681 | * Doing this wait-for-non-busy should not harm any existing |
| 682 | * configuration and fix some issues like the above. |
| 683 | * |
| 684 | * BenH. |
| 685 | * |
| 686 | * Returns 0 on success, error code (< 0) otherwise. |
| 687 | */ |
| 688 | |
| 689 | static int ide_port_wait_ready(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | { |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 691 | int unit, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | |
| 693 | printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name); |
| 694 | |
| 695 | /* Let HW settle down a bit from whatever init state we |
| 696 | * come from */ |
| 697 | mdelay(2); |
| 698 | |
| 699 | /* Wait for BSY bit to go away, spec timeout is 30 seconds, |
| 700 | * I know of at least one disk who takes 31 seconds, I use 35 |
| 701 | * here to be safe |
| 702 | */ |
| 703 | rc = ide_wait_not_busy(hwif, 35000); |
| 704 | if (rc) |
| 705 | return rc; |
| 706 | |
| 707 | /* Now make sure both master & slave are ready */ |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 708 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
| 709 | ide_drive_t *drive = &hwif->drives[unit]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 711 | /* Ignore disks that we will not probe for later. */ |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 712 | if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 || |
| 713 | (drive->dev_flags & IDE_DFLAG_PRESENT)) { |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 714 | SELECT_DRIVE(drive); |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 715 | hwif->tp_ops->set_irq(hwif, 1); |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 716 | mdelay(2); |
| 717 | rc = ide_wait_not_busy(hwif, 35000); |
| 718 | if (rc) |
| 719 | goto out; |
| 720 | } else |
| 721 | printk(KERN_DEBUG "%s: ide_wait_not_busy() skipped\n", |
| 722 | drive->name); |
| 723 | } |
| 724 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | /* Exit function with master reselected (let's be sane) */ |
Jonas Stare | 8266105 | 2007-11-27 21:35:53 +0100 | [diff] [blame] | 726 | if (unit) |
| 727 | SELECT_DRIVE(&hwif->drives[0]); |
| 728 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | return rc; |
| 730 | } |
| 731 | |
| 732 | /** |
| 733 | * ide_undecoded_slave - look for bad CF adapters |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 734 | * @dev1: slave device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | * |
| 736 | * Analyse the drives on the interface and attempt to decide if we |
| 737 | * have the same drive viewed twice. This occurs with crap CF adapters |
| 738 | * and PCMCIA sometimes. |
| 739 | */ |
| 740 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 741 | void ide_undecoded_slave(ide_drive_t *dev1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 743 | ide_drive_t *dev0 = &dev1->hwif->drives[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 745 | if ((dev1->dn & 1) == 0 || (dev0->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | return; |
| 747 | |
| 748 | /* If the models don't match they are not the same product */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 749 | if (strcmp((char *)&dev0->id[ATA_ID_PROD], |
| 750 | (char *)&dev1->id[ATA_ID_PROD])) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | return; |
| 752 | |
| 753 | /* Serial numbers do not match */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 754 | if (strncmp((char *)&dev0->id[ATA_ID_SERNO], |
| 755 | (char *)&dev1->id[ATA_ID_SERNO], ATA_ID_SERNO_LEN)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | return; |
| 757 | |
| 758 | /* No serial number, thankfully very rare for CF */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 759 | if (*(char *)&dev0->id[ATA_ID_SERNO] == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | return; |
| 761 | |
| 762 | /* Appears to be an IDE flash adapter with decode bugs */ |
| 763 | printk(KERN_WARNING "ide-probe: ignoring undecoded slave\n"); |
| 764 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 765 | dev1->dev_flags &= ~IDE_DFLAG_PRESENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | EXPORT_SYMBOL_GPL(ide_undecoded_slave); |
| 769 | |
Bartlomiej Zolnierkiewicz | 9d50152 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 770 | static int ide_probe_port(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | unsigned long flags; |
| 773 | unsigned int irqd; |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 774 | int unit, rc = -ENODEV; |
| 775 | |
| 776 | BUG_ON(hwif->present); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 778 | if ((hwif->drives[0].dev_flags & IDE_DFLAG_NOPROBE) && |
| 779 | (hwif->drives[1].dev_flags & IDE_DFLAG_NOPROBE)) |
Bartlomiej Zolnierkiewicz | 9d50152 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 780 | return -EACCES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | /* |
| 783 | * We must always disable IRQ, as probe_for_drive will assert IRQ, but |
| 784 | * we'll install our IRQ driver much later... |
| 785 | */ |
| 786 | irqd = hwif->irq; |
| 787 | if (irqd) |
| 788 | disable_irq(hwif->irq); |
| 789 | |
| 790 | local_irq_set(flags); |
| 791 | |
Bartlomiej Zolnierkiewicz | c860a8f | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 792 | if (ide_port_wait_ready(hwif) == -EBUSY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name); |
| 794 | |
| 795 | /* |
Bartlomiej Zolnierkiewicz | f367bed | 2008-03-29 19:48:21 +0100 | [diff] [blame] | 796 | * Second drive should only exist if first drive was found, |
| 797 | * but a lot of cdrom drives are configured as single slaves. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | */ |
Bartlomiej Zolnierkiewicz | f367bed | 2008-03-29 19:48:21 +0100 | [diff] [blame] | 799 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | ide_drive_t *drive = &hwif->drives[unit]; |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 801 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | (void) probe_for_drive(drive); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 803 | if (drive->dev_flags & IDE_DFLAG_PRESENT) |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 804 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | } |
Bartlomiej Zolnierkiewicz | e460a59 | 2008-04-27 15:38:24 +0200 | [diff] [blame] | 806 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | local_irq_restore(flags); |
Bartlomiej Zolnierkiewicz | e460a59 | 2008-04-27 15:38:24 +0200 | [diff] [blame] | 808 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | /* |
| 810 | * Use cached IRQ number. It might be (and is...) changed by probe |
| 811 | * code above |
| 812 | */ |
| 813 | if (irqd) |
| 814 | enable_irq(irqd); |
| 815 | |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 816 | return rc; |
Bartlomiej Zolnierkiewicz | e84e7ea | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 817 | } |
| 818 | |
| 819 | static void ide_port_tune_devices(ide_hwif_t *hwif) |
| 820 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 821 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Bartlomiej Zolnierkiewicz | e84e7ea | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 822 | int unit; |
| 823 | |
Bartlomiej Zolnierkiewicz | f01393e | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 824 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
| 825 | ide_drive_t *drive = &hwif->drives[unit]; |
| 826 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 827 | if (drive->dev_flags & IDE_DFLAG_PRESENT) { |
| 828 | if (port_ops && port_ops->quirkproc) |
| 829 | port_ops->quirkproc(drive); |
| 830 | } |
Bartlomiej Zolnierkiewicz | f01393e | 2008-01-26 20:13:03 +0100 | [diff] [blame] | 831 | } |
Bartlomiej Zolnierkiewicz | 0380dad | 2007-06-08 15:14:29 +0200 | [diff] [blame] | 832 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| 834 | ide_drive_t *drive = &hwif->drives[unit]; |
| 835 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 836 | if (drive->dev_flags & IDE_DFLAG_PRESENT) { |
Bartlomiej Zolnierkiewicz | 207daea | 2008-04-27 15:38:29 +0200 | [diff] [blame] | 837 | ide_set_max_pio(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 839 | drive->dev_flags |= IDE_DFLAG_NICE1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 841 | if (hwif->dma_ops) |
Bartlomiej Zolnierkiewicz | 8c0697c | 2007-10-16 22:29:58 +0200 | [diff] [blame] | 842 | ide_set_dma(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | } |
| 844 | } |
Kumar Gala | 208a08f | 2006-03-24 03:18:21 -0800 | [diff] [blame] | 845 | |
| 846 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
| 847 | ide_drive_t *drive = &hwif->drives[unit]; |
| 848 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 849 | if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) || |
| 850 | drive->id[ATA_ID_DWORD_IO]) |
| 851 | drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT; |
Kumar Gala | 208a08f | 2006-03-24 03:18:21 -0800 | [diff] [blame] | 852 | else |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 853 | drive->dev_flags &= ~IDE_DFLAG_NO_IO_32BIT; |
Kumar Gala | 208a08f | 2006-03-24 03:18:21 -0800 | [diff] [blame] | 854 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | } |
| 856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | /* |
| 858 | * save_match() is used to simplify logic in init_irq() below. |
| 859 | * |
| 860 | * A loophole here is that we may not know about a particular |
| 861 | * hwif's irq until after that hwif is actually probed/initialized.. |
| 862 | * This could be a problem for the case where an hwif is on a |
| 863 | * dual interface that requires serialization (eg. cmd640) and another |
| 864 | * hwif using one of the same irqs is initialized beforehand. |
| 865 | * |
| 866 | * This routine detects and reports such situations, but does not fix them. |
| 867 | */ |
| 868 | static void save_match(ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match) |
| 869 | { |
| 870 | ide_hwif_t *m = *match; |
| 871 | |
| 872 | if (m && m->hwgroup && m->hwgroup != new->hwgroup) { |
| 873 | if (!new->hwgroup) |
| 874 | return; |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 875 | printk(KERN_WARNING "%s: potential IRQ problem with %s and %s\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | hwif->name, new->name, m->name); |
| 877 | } |
| 878 | if (!m || m->irq != hwif->irq) /* don't undo a prior perfect match */ |
| 879 | *match = new; |
| 880 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
| 882 | /* |
| 883 | * init request queue |
| 884 | */ |
| 885 | static int ide_init_queue(ide_drive_t *drive) |
| 886 | { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 887 | struct request_queue *q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | ide_hwif_t *hwif = HWIF(drive); |
| 889 | int max_sectors = 256; |
| 890 | int max_sg_entries = PRD_ENTRIES; |
| 891 | |
| 892 | /* |
| 893 | * Our default set up assumes the normal IDE case, |
| 894 | * that is 64K segmenting, standard PRD setup |
| 895 | * and LBA28. Some drivers then impose their own |
| 896 | * limits and LBA48 we could raise it but as yet |
| 897 | * do not. |
| 898 | */ |
Christoph Lameter | 1946089 | 2005-06-23 00:08:19 -0700 | [diff] [blame] | 899 | |
Ravikiran G Thirumalai | 556e58f | 2005-08-04 12:53:26 -0700 | [diff] [blame] | 900 | q = blk_init_queue_node(do_ide_request, &ide_lock, hwif_to_node(hwif)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | if (!q) |
| 902 | return 1; |
| 903 | |
| 904 | q->queuedata = drive; |
| 905 | blk_queue_segment_boundary(q, 0xffff); |
| 906 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | if (hwif->rqsize < max_sectors) |
| 908 | max_sectors = hwif->rqsize; |
| 909 | blk_queue_max_sectors(q, max_sectors); |
| 910 | |
| 911 | #ifdef CONFIG_PCI |
| 912 | /* When we have an IOMMU, we may have a problem where pci_map_sg() |
| 913 | * creates segments that don't completely match our boundary |
| 914 | * requirements and thus need to be broken up again. Because it |
| 915 | * doesn't align properly either, we may actually have to break up |
| 916 | * to more segments than what was we got in the first place, a max |
| 917 | * worst case is twice as many. |
| 918 | * This will be fixed once we teach pci_map_sg() about our boundary |
| 919 | * requirements, hopefully soon. *FIXME* |
| 920 | */ |
| 921 | if (!PCI_DMA_BUS_IS_PHYS) |
| 922 | max_sg_entries >>= 1; |
| 923 | #endif /* CONFIG_PCI */ |
| 924 | |
| 925 | blk_queue_max_hw_segments(q, max_sg_entries); |
| 926 | blk_queue_max_phys_segments(q, max_sg_entries); |
| 927 | |
| 928 | /* assign drive queue */ |
| 929 | drive->queue = q; |
| 930 | |
| 931 | /* needs drive->queue to be set */ |
| 932 | ide_toggle_bounce(drive, 1); |
| 933 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | return 0; |
| 935 | } |
| 936 | |
Bartlomiej Zolnierkiewicz | 0947e0d | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 937 | static void ide_add_drive_to_hwgroup(ide_drive_t *drive) |
| 938 | { |
| 939 | ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; |
| 940 | |
| 941 | spin_lock_irq(&ide_lock); |
| 942 | if (!hwgroup->drive) { |
| 943 | /* first drive for hwgroup. */ |
| 944 | drive->next = drive; |
| 945 | hwgroup->drive = drive; |
| 946 | hwgroup->hwif = HWIF(hwgroup->drive); |
| 947 | } else { |
| 948 | drive->next = hwgroup->drive->next; |
| 949 | hwgroup->drive->next = drive; |
| 950 | } |
| 951 | spin_unlock_irq(&ide_lock); |
| 952 | } |
| 953 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | /* |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 955 | * For any present drive: |
| 956 | * - allocate the block device queue |
| 957 | * - link drive into the hwgroup |
| 958 | */ |
| 959 | static void ide_port_setup_devices(ide_hwif_t *hwif) |
| 960 | { |
| 961 | int i; |
| 962 | |
Bartlomiej Zolnierkiewicz | 26042d0 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 963 | mutex_lock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 964 | for (i = 0; i < MAX_DRIVES; i++) { |
| 965 | ide_drive_t *drive = &hwif->drives[i]; |
| 966 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 967 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 968 | continue; |
| 969 | |
| 970 | if (ide_init_queue(drive)) { |
| 971 | printk(KERN_ERR "ide: failed to init %s\n", |
| 972 | drive->name); |
| 973 | continue; |
| 974 | } |
| 975 | |
| 976 | ide_add_drive_to_hwgroup(drive); |
| 977 | } |
Bartlomiej Zolnierkiewicz | 26042d0 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 978 | mutex_unlock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 979 | } |
| 980 | |
Bartlomiej Zolnierkiewicz | af1cbba | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 981 | static ide_hwif_t *ide_ports[MAX_HWIFS]; |
| 982 | |
Bartlomiej Zolnierkiewicz | 6059143 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 983 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
| 984 | { |
| 985 | ide_hwgroup_t *hwgroup = hwif->hwgroup; |
| 986 | |
Bartlomiej Zolnierkiewicz | af1cbba | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 987 | ide_ports[hwif->index] = NULL; |
| 988 | |
Bartlomiej Zolnierkiewicz | 6059143 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 989 | spin_lock_irq(&ide_lock); |
| 990 | /* |
| 991 | * Remove us from the hwgroup, and free |
| 992 | * the hwgroup if we were the only member |
| 993 | */ |
| 994 | if (hwif->next == hwif) { |
| 995 | BUG_ON(hwgroup->hwif != hwif); |
| 996 | kfree(hwgroup); |
| 997 | } else { |
| 998 | /* There is another interface in hwgroup. |
| 999 | * Unlink us, and set hwgroup->drive and ->hwif to |
| 1000 | * something sane. |
| 1001 | */ |
| 1002 | ide_hwif_t *g = hwgroup->hwif; |
| 1003 | |
| 1004 | while (g->next != hwif) |
| 1005 | g = g->next; |
| 1006 | g->next = hwif->next; |
| 1007 | if (hwgroup->hwif == hwif) { |
| 1008 | /* Chose a random hwif for hwgroup->hwif. |
| 1009 | * It's guaranteed that there are no drives |
| 1010 | * left in the hwgroup. |
| 1011 | */ |
| 1012 | BUG_ON(hwgroup->drive != NULL); |
| 1013 | hwgroup->hwif = g; |
| 1014 | } |
| 1015 | BUG_ON(hwgroup->hwif == hwif); |
| 1016 | } |
| 1017 | spin_unlock_irq(&ide_lock); |
| 1018 | } |
| 1019 | |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1020 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | * This routine sets up the irq for an ide interface, and creates a new |
| 1022 | * hwgroup for the irq/hwif if none was previously assigned. |
| 1023 | * |
| 1024 | * Much of the code is for correctly detecting/handling irq sharing |
| 1025 | * and irq serialization situations. This is somewhat complex because |
| 1026 | * it handles static as well as dynamic (PCMCIA) IDE interfaces. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | */ |
| 1028 | static int init_irq (ide_hwif_t *hwif) |
| 1029 | { |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 1030 | struct ide_io_ports *io_ports = &hwif->io_ports; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | unsigned int index; |
| 1032 | ide_hwgroup_t *hwgroup; |
| 1033 | ide_hwif_t *match = NULL; |
| 1034 | |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 1035 | mutex_lock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | hwif->hwgroup = NULL; |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 1037 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | /* |
| 1039 | * Group up with any other hwifs that share our irq(s). |
| 1040 | */ |
| 1041 | for (index = 0; index < MAX_HWIFS; index++) { |
Bartlomiej Zolnierkiewicz | af1cbba | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1042 | ide_hwif_t *h = ide_ports[index]; |
| 1043 | |
| 1044 | if (h && h->hwgroup) { /* scan only initialized ports */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | if (hwif->irq == h->irq) { |
| 1046 | hwif->sharing_irq = h->sharing_irq = 1; |
| 1047 | if (hwif->chipset != ide_pci || |
| 1048 | h->chipset != ide_pci) { |
| 1049 | save_match(hwif, h, &match); |
| 1050 | } |
| 1051 | } |
| 1052 | if (hwif->serialized) { |
| 1053 | if (hwif->mate && hwif->mate->irq == h->irq) |
| 1054 | save_match(hwif, h, &match); |
| 1055 | } |
| 1056 | if (h->serialized) { |
| 1057 | if (h->mate && hwif->irq == h->mate->irq) |
| 1058 | save_match(hwif, h, &match); |
| 1059 | } |
| 1060 | } |
| 1061 | } |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 1062 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | /* |
| 1064 | * If we are still without a hwgroup, then form a new one |
| 1065 | */ |
| 1066 | if (match) { |
| 1067 | hwgroup = match->hwgroup; |
| 1068 | hwif->hwgroup = hwgroup; |
| 1069 | /* |
| 1070 | * Link us into the hwgroup. |
| 1071 | * This must be done early, do ensure that unexpected_intr |
| 1072 | * can find the hwif and prevent irq storms. |
| 1073 | * No drives are attached to the new hwif, choose_drive |
| 1074 | * can't do anything stupid (yet). |
| 1075 | * Add ourself as the 2nd entry to the hwgroup->hwif |
| 1076 | * linked list, the first entry is the hwif that owns |
| 1077 | * hwgroup->handler - do not change that. |
| 1078 | */ |
| 1079 | spin_lock_irq(&ide_lock); |
| 1080 | hwif->next = hwgroup->hwif->next; |
| 1081 | hwgroup->hwif->next = hwif; |
Bartlomiej Zolnierkiewicz | cae5c82 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1082 | BUG_ON(hwif->next == hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | spin_unlock_irq(&ide_lock); |
| 1084 | } else { |
Bartlomiej Zolnierkiewicz | 422278e | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 1085 | hwgroup = kmalloc_node(sizeof(*hwgroup), GFP_KERNEL|__GFP_ZERO, |
| 1086 | hwif_to_node(hwif)); |
| 1087 | if (hwgroup == NULL) |
| 1088 | goto out_up; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | |
| 1090 | hwif->hwgroup = hwgroup; |
Bartlomiej Zolnierkiewicz | 422278e | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 1091 | hwgroup->hwif = hwif->next = hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | init_timer(&hwgroup->timer); |
| 1094 | hwgroup->timer.function = &ide_timer_expiry; |
| 1095 | hwgroup->timer.data = (unsigned long) hwgroup; |
| 1096 | } |
| 1097 | |
Bartlomiej Zolnierkiewicz | af1cbba | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1098 | ide_ports[hwif->index] = hwif; |
| 1099 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | /* |
| 1101 | * Allocate the irq, if not already obtained for another hwif |
| 1102 | */ |
| 1103 | if (!match || match->irq != hwif->irq) { |
Bartlomiej Zolnierkiewicz | 7b5da4b | 2008-01-25 22:17:08 +0100 | [diff] [blame] | 1104 | int sa = 0; |
Adrian Bunk | 7b89280 | 2008-02-06 01:36:29 -0800 | [diff] [blame] | 1105 | #if defined(__mc68000__) |
Thomas Gleixner | 362537b | 2006-07-01 19:29:34 -0700 | [diff] [blame] | 1106 | sa = IRQF_SHARED; |
Bartlomiej Zolnierkiewicz | e1771e2 | 2008-02-11 00:32:15 +0100 | [diff] [blame] | 1107 | #endif /* __mc68000__ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | |
Bartlomiej Zolnierkiewicz | a2cdee5 | 2008-10-10 22:39:24 +0200 | [diff] [blame] | 1109 | if (hwif->chipset == ide_pci || hwif->chipset == ide_cmd646 || |
| 1110 | hwif->chipset == ide_ali14xx) |
Thomas Gleixner | 362537b | 2006-07-01 19:29:34 -0700 | [diff] [blame] | 1111 | sa = IRQF_SHARED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 1113 | if (io_ports->ctl_addr) |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 1114 | hwif->tp_ops->set_irq(hwif, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | |
| 1116 | if (request_irq(hwif->irq,&ide_intr,sa,hwif->name,hwgroup)) |
| 1117 | goto out_unlink; |
| 1118 | } |
| 1119 | |
Bartlomiej Zolnierkiewicz | 8a0e7e1 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1120 | if (!hwif->rqsize) { |
| 1121 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) || |
| 1122 | (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA)) |
| 1123 | hwif->rqsize = 256; |
| 1124 | else |
| 1125 | hwif->rqsize = 65536; |
| 1126 | } |
| 1127 | |
Adrian Bunk | 7b89280 | 2008-02-06 01:36:29 -0800 | [diff] [blame] | 1128 | #if !defined(__mc68000__) |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1129 | 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] | 1130 | io_ports->data_addr, io_ports->status_addr, |
| 1131 | io_ports->ctl_addr, hwif->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | #else |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1133 | printk(KERN_INFO "%s at 0x%08lx on irq %d", hwif->name, |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 1134 | io_ports->data_addr, hwif->irq); |
Adrian Bunk | 7b89280 | 2008-02-06 01:36:29 -0800 | [diff] [blame] | 1135 | #endif /* __mc68000__ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | if (match) |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1137 | printk(KERN_CONT " (%sed with %s)", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | hwif->sharing_irq ? "shar" : "serializ", match->name); |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1139 | printk(KERN_CONT "\n"); |
Bartlomiej Zolnierkiewicz | d5bc659 | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1140 | |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 1141 | mutex_unlock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | return 0; |
| 1143 | out_unlink: |
Bartlomiej Zolnierkiewicz | fbd1308 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1144 | ide_remove_port_from_hwgroup(hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | out_up: |
Matthias Kaehlcke | ef29888 | 2007-07-09 23:17:55 +0200 | [diff] [blame] | 1146 | mutex_unlock(&ide_cfg_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | return 1; |
| 1148 | } |
| 1149 | |
| 1150 | static int ata_lock(dev_t dev, void *data) |
| 1151 | { |
| 1152 | /* FIXME: we want to pin hwif down */ |
| 1153 | return 0; |
| 1154 | } |
| 1155 | |
| 1156 | static struct kobject *ata_probe(dev_t dev, int *part, void *data) |
| 1157 | { |
| 1158 | ide_hwif_t *hwif = data; |
| 1159 | int unit = *part >> PARTN_BITS; |
| 1160 | ide_drive_t *drive = &hwif->drives[unit]; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1161 | |
| 1162 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | return NULL; |
| 1164 | |
| 1165 | if (drive->media == ide_disk) |
| 1166 | request_module("ide-disk"); |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1167 | if (drive->dev_flags & IDE_DFLAG_SCSI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | request_module("ide-scsi"); |
| 1169 | if (drive->media == ide_cdrom || drive->media == ide_optical) |
| 1170 | request_module("ide-cd"); |
| 1171 | if (drive->media == ide_tape) |
| 1172 | request_module("ide-tape"); |
| 1173 | if (drive->media == ide_floppy) |
| 1174 | request_module("ide-floppy"); |
| 1175 | |
| 1176 | return NULL; |
| 1177 | } |
| 1178 | |
| 1179 | static struct kobject *exact_match(dev_t dev, int *part, void *data) |
| 1180 | { |
| 1181 | struct gendisk *p = data; |
| 1182 | *part &= (1 << PARTN_BITS) - 1; |
Tejun Heo | ed9e198 | 2008-08-25 19:56:05 +0900 | [diff] [blame] | 1183 | return &disk_to_dev(p)->kobj; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | } |
| 1185 | |
| 1186 | static int exact_lock(dev_t dev, void *data) |
| 1187 | { |
| 1188 | struct gendisk *p = data; |
| 1189 | |
| 1190 | if (!get_disk(p)) |
| 1191 | return -1; |
| 1192 | return 0; |
| 1193 | } |
| 1194 | |
| 1195 | void ide_register_region(struct gendisk *disk) |
| 1196 | { |
| 1197 | blk_register_region(MKDEV(disk->major, disk->first_minor), |
| 1198 | disk->minors, NULL, exact_match, exact_lock, disk); |
| 1199 | } |
| 1200 | |
| 1201 | EXPORT_SYMBOL_GPL(ide_register_region); |
| 1202 | |
| 1203 | void ide_unregister_region(struct gendisk *disk) |
| 1204 | { |
| 1205 | blk_unregister_region(MKDEV(disk->major, disk->first_minor), |
| 1206 | disk->minors); |
| 1207 | } |
| 1208 | |
| 1209 | EXPORT_SYMBOL_GPL(ide_unregister_region); |
| 1210 | |
| 1211 | void ide_init_disk(struct gendisk *disk, ide_drive_t *drive) |
| 1212 | { |
| 1213 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 7f612f2 | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 1214 | unsigned int unit = drive->dn & 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | |
| 1216 | disk->major = hwif->major; |
| 1217 | disk->first_minor = unit << PARTN_BITS; |
| 1218 | sprintf(disk->disk_name, "hd%c", 'a' + hwif->index * MAX_DRIVES + unit); |
| 1219 | disk->queue = drive->queue; |
| 1220 | } |
| 1221 | |
| 1222 | EXPORT_SYMBOL_GPL(ide_init_disk); |
| 1223 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1224 | static void ide_remove_drive_from_hwgroup(ide_drive_t *drive) |
| 1225 | { |
| 1226 | ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; |
| 1227 | |
| 1228 | if (drive == drive->next) { |
| 1229 | /* special case: last drive from hwgroup. */ |
| 1230 | BUG_ON(hwgroup->drive != drive); |
| 1231 | hwgroup->drive = NULL; |
| 1232 | } else { |
| 1233 | ide_drive_t *walk; |
| 1234 | |
| 1235 | walk = hwgroup->drive; |
| 1236 | while (walk->next != drive) |
| 1237 | walk = walk->next; |
| 1238 | walk->next = drive->next; |
| 1239 | if (hwgroup->drive == drive) { |
| 1240 | hwgroup->drive = drive->next; |
| 1241 | hwgroup->hwif = hwgroup->drive->hwif; |
| 1242 | } |
| 1243 | } |
| 1244 | BUG_ON(hwgroup->drive == drive); |
| 1245 | } |
| 1246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | static void drive_release_dev (struct device *dev) |
| 1248 | { |
| 1249 | ide_drive_t *drive = container_of(dev, ide_drive_t, gendev); |
| 1250 | |
Bartlomiej Zolnierkiewicz | 5b0c4b3 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1251 | ide_proc_unregister_device(drive); |
| 1252 | |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1253 | spin_lock_irq(&ide_lock); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1254 | ide_remove_drive_from_hwgroup(drive); |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1255 | kfree(drive->id); |
| 1256 | drive->id = NULL; |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1257 | drive->dev_flags &= ~IDE_DFLAG_PRESENT; |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1258 | /* Messed up locking ... */ |
| 1259 | spin_unlock_irq(&ide_lock); |
| 1260 | blk_cleanup_queue(drive->queue); |
| 1261 | spin_lock_irq(&ide_lock); |
| 1262 | drive->queue = NULL; |
| 1263 | spin_unlock_irq(&ide_lock); |
| 1264 | |
Aleksey Makarov | f36d402 | 2006-01-09 15:59:27 -0800 | [diff] [blame] | 1265 | complete(&drive->gendev_rel_comp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | } |
| 1267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | static int hwif_init(ide_hwif_t *hwif) |
| 1269 | { |
| 1270 | int old_irq; |
| 1271 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | if (!hwif->irq) { |
Bartlomiej Zolnierkiewicz | a861beb | 2008-07-08 19:27:22 +0200 | [diff] [blame] | 1273 | hwif->irq = __ide_default_irq(hwif->io_ports.data_addr); |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 1274 | if (!hwif->irq) { |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1275 | printk(KERN_ERR "%s: disabled, no IRQ\n", hwif->name); |
Bartlomiej Zolnierkiewicz | 4853565 | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 1276 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | } |
| 1278 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | if (register_blkdev(hwif->major, hwif->name)) |
| 1281 | return 0; |
| 1282 | |
| 1283 | if (!hwif->sg_max_nents) |
| 1284 | hwif->sg_max_nents = PRD_ENTRIES; |
| 1285 | |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 1286 | hwif->sg_table = kmalloc(sizeof(struct scatterlist)*hwif->sg_max_nents, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | GFP_KERNEL); |
| 1288 | if (!hwif->sg_table) { |
| 1289 | printk(KERN_ERR "%s: unable to allocate SG table.\n", hwif->name); |
| 1290 | goto out; |
| 1291 | } |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 1292 | |
| 1293 | sg_init_table(hwif->sg_table, hwif->sg_max_nents); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | |
| 1295 | if (init_irq(hwif) == 0) |
| 1296 | goto done; |
| 1297 | |
| 1298 | old_irq = hwif->irq; |
| 1299 | /* |
| 1300 | * It failed to initialise. Find the default IRQ for |
| 1301 | * this port and try that. |
| 1302 | */ |
Bartlomiej Zolnierkiewicz | a861beb | 2008-07-08 19:27:22 +0200 | [diff] [blame] | 1303 | hwif->irq = __ide_default_irq(hwif->io_ports.data_addr); |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 1304 | if (!hwif->irq) { |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1305 | printk(KERN_ERR "%s: disabled, unable to get IRQ %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | hwif->name, old_irq); |
| 1307 | goto out; |
| 1308 | } |
| 1309 | if (init_irq(hwif)) { |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1310 | printk(KERN_ERR "%s: probed IRQ %d and default IRQ %d failed\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | hwif->name, old_irq, hwif->irq); |
| 1312 | goto out; |
| 1313 | } |
Bartlomiej Zolnierkiewicz | 1b8ebad | 2008-07-24 22:53:36 +0200 | [diff] [blame] | 1314 | printk(KERN_WARNING "%s: probed IRQ %d failed, using default\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | hwif->name, hwif->irq); |
| 1316 | |
| 1317 | done: |
Bartlomiej Zolnierkiewicz | 3a4e7c9 | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 1318 | blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS, |
| 1319 | THIS_MODULE, ata_probe, ata_lock, hwif); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | return 1; |
| 1321 | |
| 1322 | out: |
| 1323 | unregister_blkdev(hwif->major, hwif->name); |
| 1324 | return 0; |
| 1325 | } |
| 1326 | |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1327 | static void hwif_register_devices(ide_hwif_t *hwif) |
| 1328 | { |
| 1329 | unsigned int i; |
| 1330 | |
| 1331 | for (i = 0; i < MAX_DRIVES; i++) { |
| 1332 | ide_drive_t *drive = &hwif->drives[i]; |
Bartlomiej Zolnierkiewicz | c5d70cc | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1333 | struct device *dev = &drive->gendev; |
| 1334 | int ret; |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1335 | |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1336 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
Bartlomiej Zolnierkiewicz | c5d70cc | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1337 | continue; |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1338 | |
Bartlomiej Zolnierkiewicz | c5d70cc | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1339 | snprintf(dev->bus_id, BUS_ID_SIZE, "%u.%u", hwif->index, i); |
| 1340 | dev->parent = &hwif->gendev; |
| 1341 | dev->bus = &ide_bus_type; |
| 1342 | dev->driver_data = drive; |
| 1343 | dev->release = drive_release_dev; |
| 1344 | |
| 1345 | ret = device_register(dev); |
| 1346 | if (ret < 0) |
| 1347 | printk(KERN_WARNING "IDE: %s: device_register error: " |
| 1348 | "%d\n", __func__, ret); |
Bartlomiej Zolnierkiewicz | 9601a60 | 2007-10-20 00:32:29 +0200 | [diff] [blame] | 1349 | } |
| 1350 | } |
| 1351 | |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1352 | static void ide_port_init_devices(ide_hwif_t *hwif) |
| 1353 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1354 | const struct ide_port_ops *port_ops = hwif->port_ops; |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1355 | int i; |
| 1356 | |
| 1357 | for (i = 0; i < MAX_DRIVES; i++) { |
| 1358 | ide_drive_t *drive = &hwif->drives[i]; |
| 1359 | |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 1360 | drive->dn = i + hwif->channel * 2; |
| 1361 | |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1362 | if (hwif->host_flags & IDE_HFLAG_IO_32BIT) |
| 1363 | drive->io_32bit = 1; |
| 1364 | if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS) |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1365 | drive->dev_flags |= IDE_DFLAG_UNMASK; |
Bartlomiej Zolnierkiewicz | 807b90d | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 1366 | if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS) |
Bartlomiej Zolnierkiewicz | 97100fc | 2008-10-13 21:39:36 +0200 | [diff] [blame] | 1367 | drive->dev_flags |= IDE_DFLAG_NO_UNMASK; |
Bartlomiej Zolnierkiewicz | 1f2cf8b | 2008-02-02 19:56:40 +0100 | [diff] [blame] | 1368 | |
Bartlomiej Zolnierkiewicz | e6d95bd | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 1369 | if (port_ops && port_ops->init_dev) |
| 1370 | port_ops->init_dev(drive); |
| 1371 | } |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1372 | } |
| 1373 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1374 | static void ide_init_port(ide_hwif_t *hwif, unsigned int port, |
| 1375 | const struct ide_port_info *d) |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1376 | { |
Adrian Bunk | b769164 | 2008-06-10 20:56:36 +0200 | [diff] [blame] | 1377 | hwif->channel = port; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1378 | |
| 1379 | if (d->chipset) |
| 1380 | hwif->chipset = d->chipset; |
| 1381 | |
| 1382 | if (d->init_iops) |
| 1383 | d->init_iops(hwif); |
| 1384 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1385 | if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) || |
| 1386 | (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS)) |
| 1387 | hwif->irq = port ? 15 : 14; |
| 1388 | |
Bartlomiej Zolnierkiewicz | 23f8e4b | 2008-05-01 14:08:51 +0200 | [diff] [blame] | 1389 | /* ->host_flags may be set by ->init_iops (or even earlier...) */ |
| 1390 | hwif->host_flags |= d->host_flags; |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1391 | hwif->pio_mask = d->pio_mask; |
| 1392 | |
Bartlomiej Zolnierkiewicz | 374e042 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 1393 | if (d->tp_ops) |
| 1394 | hwif->tp_ops = d->tp_ops; |
| 1395 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1396 | /* ->set_pio_mode for DTC2278 is currently limited to port 0 */ |
| 1397 | if (hwif->chipset != ide_dtc2278 || hwif->channel == 0) |
| 1398 | hwif->port_ops = d->port_ops; |
| 1399 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1400 | hwif->swdma_mask = d->swdma_mask; |
| 1401 | hwif->mwdma_mask = d->mwdma_mask; |
| 1402 | hwif->ultra_mask = d->udma_mask; |
| 1403 | |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1404 | if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) { |
| 1405 | int rc; |
| 1406 | |
| 1407 | if (d->init_dma) |
| 1408 | rc = d->init_dma(hwif, d); |
| 1409 | else |
| 1410 | rc = ide_hwif_setup_dma(hwif, d); |
| 1411 | |
| 1412 | if (rc < 0) { |
| 1413 | printk(KERN_INFO "%s: DMA disabled\n", hwif->name); |
Bartlomiej Zolnierkiewicz | ebb00fb | 2008-07-23 19:55:51 +0200 | [diff] [blame] | 1414 | hwif->dma_base = 0; |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1415 | hwif->swdma_mask = 0; |
| 1416 | hwif->mwdma_mask = 0; |
| 1417 | hwif->ultra_mask = 0; |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 1418 | } else if (d->dma_ops) |
| 1419 | hwif->dma_ops = d->dma_ops; |
Bartlomiej Zolnierkiewicz | b123f56 | 2008-04-26 22:25:22 +0200 | [diff] [blame] | 1420 | } |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1421 | |
Bartlomiej Zolnierkiewicz | 1024c5f | 2008-05-04 17:03:41 +0200 | [diff] [blame] | 1422 | if ((d->host_flags & IDE_HFLAG_SERIALIZE) || |
| 1423 | ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) { |
| 1424 | if (hwif->mate) |
| 1425 | hwif->mate->serialized = hwif->serialized = 1; |
| 1426 | } |
| 1427 | |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1428 | if (d->host_flags & IDE_HFLAG_RQSIZE_256) |
| 1429 | hwif->rqsize = 256; |
| 1430 | |
| 1431 | /* call chipset specific routine for each enabled port */ |
| 1432 | if (d->init_hwif) |
| 1433 | d->init_hwif(hwif); |
Bartlomiej Zolnierkiewicz | c7f6f21 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1434 | } |
Bartlomiej Zolnierkiewicz | bfa14b4 | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1435 | |
Bartlomiej Zolnierkiewicz | c7f6f21 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1436 | static void ide_port_cable_detect(ide_hwif_t *hwif) |
| 1437 | { |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1438 | const struct ide_port_ops *port_ops = hwif->port_ops; |
| 1439 | |
| 1440 | if (port_ops && port_ops->cable_detect && (hwif->ultra_mask & 0x78)) { |
Bartlomiej Zolnierkiewicz | bfa14b4 | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1441 | if (hwif->cbl != ATA_CBL_PATA40_SHORT) |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 1442 | hwif->cbl = port_ops->cable_detect(hwif); |
Bartlomiej Zolnierkiewicz | bfa14b4 | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1443 | } |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1444 | } |
| 1445 | |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1446 | static ssize_t store_delete_devices(struct device *portdev, |
| 1447 | struct device_attribute *attr, |
| 1448 | const char *buf, size_t n) |
| 1449 | { |
| 1450 | ide_hwif_t *hwif = dev_get_drvdata(portdev); |
| 1451 | |
| 1452 | if (strncmp(buf, "1", n)) |
| 1453 | return -EINVAL; |
| 1454 | |
| 1455 | ide_port_unregister_devices(hwif); |
| 1456 | |
| 1457 | return n; |
| 1458 | }; |
| 1459 | |
| 1460 | static DEVICE_ATTR(delete_devices, S_IWUSR, NULL, store_delete_devices); |
| 1461 | |
| 1462 | static ssize_t store_scan(struct device *portdev, |
| 1463 | struct device_attribute *attr, |
| 1464 | const char *buf, size_t n) |
| 1465 | { |
| 1466 | ide_hwif_t *hwif = dev_get_drvdata(portdev); |
| 1467 | |
| 1468 | if (strncmp(buf, "1", n)) |
| 1469 | return -EINVAL; |
| 1470 | |
| 1471 | ide_port_unregister_devices(hwif); |
| 1472 | ide_port_scan(hwif); |
| 1473 | |
| 1474 | return n; |
| 1475 | }; |
| 1476 | |
| 1477 | static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); |
| 1478 | |
| 1479 | static struct device_attribute *ide_port_attrs[] = { |
| 1480 | &dev_attr_delete_devices, |
| 1481 | &dev_attr_scan, |
| 1482 | NULL |
| 1483 | }; |
| 1484 | |
| 1485 | static int ide_sysfs_register_port(ide_hwif_t *hwif) |
| 1486 | { |
Bartlomiej Zolnierkiewicz | ca09a23 | 2008-10-05 18:23:28 +0200 | [diff] [blame] | 1487 | int i, uninitialized_var(rc); |
Bartlomiej Zolnierkiewicz | f74c914 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1488 | |
| 1489 | for (i = 0; ide_port_attrs[i]; i++) { |
| 1490 | rc = device_create_file(hwif->portdev, ide_port_attrs[i]); |
| 1491 | if (rc) |
| 1492 | break; |
| 1493 | } |
| 1494 | |
| 1495 | return rc; |
| 1496 | } |
| 1497 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1498 | static unsigned int ide_indexes; |
| 1499 | |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1500 | /** |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1501 | * ide_find_port_slot - find free port slot |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1502 | * @d: IDE port info |
| 1503 | * |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1504 | * 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] | 1505 | */ |
| 1506 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1507 | static int ide_find_port_slot(const struct ide_port_info *d) |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1508 | { |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1509 | int idx = -ENOENT; |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1510 | u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1; |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1511 | 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] | 1512 | |
| 1513 | /* |
| 1514 | * Claim an unassigned slot. |
| 1515 | * |
| 1516 | * Give preference to claiming other slots before claiming ide0/ide1, |
| 1517 | * just in case there's another interface yet-to-be-scanned |
| 1518 | * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults). |
| 1519 | * |
| 1520 | * Unless there is a bootable card that does not use the standard |
| 1521 | * ports 0x1f0/0x170 (the ide0/ide1 defaults). |
| 1522 | */ |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1523 | mutex_lock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 1524 | if (bootable) { |
| 1525 | if ((ide_indexes | i) != (1 << MAX_HWIFS) - 1) |
| 1526 | idx = ffz(ide_indexes | i); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1527 | } else { |
Bartlomiej Zolnierkiewicz | 75d21ff | 2008-10-13 21:39:33 +0200 | [diff] [blame] | 1528 | if ((ide_indexes | 3) != (1 << MAX_HWIFS) - 1) |
| 1529 | idx = ffz(ide_indexes | 3); |
| 1530 | else if ((ide_indexes & 3) != 3) |
| 1531 | idx = ffz(ide_indexes); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1532 | } |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1533 | if (idx >= 0) |
| 1534 | ide_indexes |= (1 << idx); |
| 1535 | mutex_unlock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1536 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1537 | return idx; |
| 1538 | } |
Bartlomiej Zolnierkiewicz | eb3aff5 | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 1539 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1540 | static void ide_free_port_slot(int idx) |
| 1541 | { |
| 1542 | mutex_lock(&ide_cfg_mtx); |
| 1543 | ide_indexes &= ~(1 << idx); |
| 1544 | mutex_unlock(&ide_cfg_mtx); |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1545 | } |
Bartlomiej Zolnierkiewicz | fe80b93 | 2008-04-26 17:36:36 +0200 | [diff] [blame] | 1546 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1547 | struct ide_host *ide_host_alloc_all(const struct ide_port_info *d, |
| 1548 | hw_regs_t **hws) |
| 1549 | { |
| 1550 | struct ide_host *host; |
| 1551 | int i; |
| 1552 | |
| 1553 | host = kzalloc(sizeof(*host), GFP_KERNEL); |
| 1554 | if (host == NULL) |
| 1555 | return NULL; |
| 1556 | |
| 1557 | for (i = 0; i < MAX_HWIFS; i++) { |
| 1558 | ide_hwif_t *hwif; |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1559 | int idx; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1560 | |
| 1561 | if (hws[i] == NULL) |
| 1562 | continue; |
| 1563 | |
Bartlomiej Zolnierkiewicz | 18de101 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1564 | hwif = kzalloc(sizeof(*hwif), GFP_KERNEL); |
| 1565 | if (hwif == NULL) |
| 1566 | continue; |
| 1567 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1568 | idx = ide_find_port_slot(d); |
| 1569 | if (idx < 0) { |
| 1570 | printk(KERN_ERR "%s: no free slot for interface\n", |
| 1571 | d ? d->name : "ide"); |
Bartlomiej Zolnierkiewicz | 18de101 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1572 | kfree(hwif); |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1573 | continue; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1574 | } |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1575 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1576 | ide_init_port_data(hwif, idx); |
| 1577 | |
Bartlomiej Zolnierkiewicz | 08da591 | 2008-07-24 22:53:15 +0200 | [diff] [blame] | 1578 | hwif->host = host; |
| 1579 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1580 | host->ports[i] = hwif; |
| 1581 | host->n_ports++; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1582 | } |
| 1583 | |
| 1584 | if (host->n_ports == 0) { |
| 1585 | kfree(host); |
| 1586 | return NULL; |
| 1587 | } |
| 1588 | |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 1589 | if (hws[0]) |
| 1590 | host->dev[0] = hws[0]->dev; |
| 1591 | |
Bartlomiej Zolnierkiewicz | feb22b7 | 2008-10-10 22:39:32 +0200 | [diff] [blame] | 1592 | if (d) { |
| 1593 | host->init_chipset = d->init_chipset; |
Bartlomiej Zolnierkiewicz | ef0b042 | 2008-07-24 22:53:19 +0200 | [diff] [blame] | 1594 | host->host_flags = d->host_flags; |
Bartlomiej Zolnierkiewicz | feb22b7 | 2008-10-10 22:39:32 +0200 | [diff] [blame] | 1595 | } |
Bartlomiej Zolnierkiewicz | ef0b042 | 2008-07-24 22:53:19 +0200 | [diff] [blame] | 1596 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1597 | return host; |
| 1598 | } |
| 1599 | EXPORT_SYMBOL_GPL(ide_host_alloc_all); |
| 1600 | |
| 1601 | struct ide_host *ide_host_alloc(const struct ide_port_info *d, hw_regs_t **hws) |
| 1602 | { |
| 1603 | hw_regs_t *hws_all[MAX_HWIFS]; |
| 1604 | int i; |
| 1605 | |
| 1606 | for (i = 0; i < MAX_HWIFS; i++) |
| 1607 | hws_all[i] = (i < 4) ? hws[i] : NULL; |
| 1608 | |
| 1609 | return ide_host_alloc_all(d, hws_all); |
| 1610 | } |
| 1611 | EXPORT_SYMBOL_GPL(ide_host_alloc); |
| 1612 | |
| 1613 | int ide_host_register(struct ide_host *host, const struct ide_port_info *d, |
| 1614 | hw_regs_t **hws) |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1615 | { |
| 1616 | ide_hwif_t *hwif, *mate = NULL; |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1617 | int i, j = 0; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1618 | |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1619 | for (i = 0; i < MAX_HWIFS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1620 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1621 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1622 | if (hwif == NULL) { |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1623 | mate = NULL; |
| 1624 | continue; |
| 1625 | } |
| 1626 | |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 1627 | ide_init_port_hw(hwif, hws[i]); |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 1628 | ide_port_apply_params(hwif); |
| 1629 | |
| 1630 | if (d == NULL) { |
| 1631 | mate = NULL; |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 1632 | } else { |
| 1633 | if ((i & 1) && mate) { |
| 1634 | hwif->mate = mate; |
| 1635 | mate->mate = hwif; |
| 1636 | } |
| 1637 | |
| 1638 | mate = (i & 1) ? NULL : hwif; |
| 1639 | |
| 1640 | ide_init_port(hwif, i & 1, d); |
| 1641 | ide_port_cable_detect(hwif); |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 1642 | } |
| 1643 | |
Bartlomiej Zolnierkiewicz | 7704ca2 | 2008-02-02 19:56:39 +0100 | [diff] [blame] | 1644 | ide_port_init_devices(hwif); |
Bartlomiej Zolnierkiewicz | c413b9b | 2008-02-02 19:56:31 +0100 | [diff] [blame] | 1645 | } |
| 1646 | |
| 1647 | for (i = 0; i < MAX_HWIFS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1648 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1649 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1650 | if (hwif == NULL) |
| 1651 | continue; |
Bartlomiej Zolnierkiewicz | 139ddfc | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1652 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1653 | if (ide_probe_port(hwif) == 0) |
| 1654 | hwif->present = 1; |
Bartlomiej Zolnierkiewicz | a14dc57 | 2008-02-01 23:09:36 +0100 | [diff] [blame] | 1655 | |
| 1656 | if (hwif->chipset != ide_4drives || !hwif->mate || |
| 1657 | !hwif->mate->present) |
| 1658 | ide_register_port(hwif); |
| 1659 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1660 | if (hwif->present) |
| 1661 | ide_port_tune_devices(hwif); |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1662 | } |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1663 | |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1664 | for (i = 0; i < MAX_HWIFS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1665 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1666 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1667 | if (hwif == NULL) |
| 1668 | continue; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1669 | |
| 1670 | if (hwif_init(hwif) == 0) { |
| 1671 | printk(KERN_INFO "%s: failed to initialize IDE " |
| 1672 | "interface\n", hwif->name); |
Bartlomiej Zolnierkiewicz | 4853565 | 2008-02-01 23:09:34 +0100 | [diff] [blame] | 1673 | hwif->present = 0; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1674 | continue; |
| 1675 | } |
Bartlomiej Zolnierkiewicz | decdc3f | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1676 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1677 | j++; |
| 1678 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1679 | if (hwif->present) |
| 1680 | ide_port_setup_devices(hwif); |
Bartlomiej Zolnierkiewicz | 26042d0 | 2008-04-18 00:46:22 +0200 | [diff] [blame] | 1681 | |
Bartlomiej Zolnierkiewicz | decdc3f | 2008-02-02 19:56:41 +0100 | [diff] [blame] | 1682 | ide_acpi_init(hwif); |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1683 | |
| 1684 | if (hwif->present) |
| 1685 | ide_acpi_port_init_devices(hwif); |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1686 | } |
| 1687 | |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1688 | for (i = 0; i < MAX_HWIFS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1689 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | 2e13093 | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1690 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1691 | if (hwif == NULL) |
| 1692 | continue; |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1693 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1694 | if (hwif->chipset == ide_unknown) |
| 1695 | hwif->chipset = ide_generic; |
| 1696 | |
| 1697 | if (hwif->present) |
Bartlomiej Zolnierkiewicz | ba6560a | 2008-01-26 20:13:04 +0100 | [diff] [blame] | 1698 | hwif_register_devices(hwif); |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1699 | } |
| 1700 | |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1701 | for (i = 0; i < MAX_HWIFS; i++) { |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1702 | hwif = host->ports[i]; |
Bartlomiej Zolnierkiewicz | 327617e | 2008-02-02 19:56:43 +0100 | [diff] [blame] | 1703 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1704 | if (hwif == NULL) |
| 1705 | continue; |
Bartlomiej Zolnierkiewicz | 327617e | 2008-02-02 19:56:43 +0100 | [diff] [blame] | 1706 | |
Bartlomiej Zolnierkiewicz | eb716be | 2008-04-26 22:25:17 +0200 | [diff] [blame] | 1707 | ide_sysfs_register_port(hwif); |
| 1708 | ide_proc_register_port(hwif); |
| 1709 | |
| 1710 | if (hwif->present) |
Bartlomiej Zolnierkiewicz | d9270a3 | 2008-02-02 19:56:43 +0100 | [diff] [blame] | 1711 | ide_proc_port_register_devices(hwif); |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1712 | } |
| 1713 | |
Bartlomiej Zolnierkiewicz | e0d0020 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1714 | return j ? 0 : -1; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1715 | } |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1716 | EXPORT_SYMBOL_GPL(ide_host_register); |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 1717 | |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1718 | int ide_host_add(const struct ide_port_info *d, hw_regs_t **hws, |
| 1719 | struct ide_host **hostp) |
| 1720 | { |
| 1721 | struct ide_host *host; |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1722 | int rc; |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1723 | |
| 1724 | host = ide_host_alloc(d, hws); |
| 1725 | if (host == NULL) |
| 1726 | return -ENOMEM; |
| 1727 | |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1728 | rc = ide_host_register(host, d, hws); |
| 1729 | if (rc) { |
| 1730 | ide_host_free(host); |
| 1731 | return rc; |
| 1732 | } |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1733 | |
| 1734 | if (hostp) |
| 1735 | *hostp = host; |
| 1736 | |
| 1737 | return 0; |
| 1738 | } |
| 1739 | EXPORT_SYMBOL_GPL(ide_host_add); |
| 1740 | |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1741 | void ide_host_free(struct ide_host *host) |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1742 | { |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1743 | ide_hwif_t *hwif; |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1744 | int i; |
| 1745 | |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 1746 | for (i = 0; i < MAX_HWIFS; i++) { |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1747 | hwif = host->ports[i]; |
| 1748 | |
| 1749 | if (hwif == NULL) |
| 1750 | continue; |
| 1751 | |
Bartlomiej Zolnierkiewicz | 8cdf310 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1752 | ide_free_port_slot(hwif->index); |
Bartlomiej Zolnierkiewicz | 18de101 | 2008-07-23 19:55:58 +0200 | [diff] [blame] | 1753 | kfree(hwif); |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 1754 | } |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1755 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1756 | kfree(host); |
Bartlomiej Zolnierkiewicz | 151575e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 1757 | } |
Bartlomiej Zolnierkiewicz | 8a69580 | 2008-07-23 19:55:59 +0200 | [diff] [blame] | 1758 | EXPORT_SYMBOL_GPL(ide_host_free); |
| 1759 | |
| 1760 | void ide_host_remove(struct ide_host *host) |
| 1761 | { |
| 1762 | int i; |
| 1763 | |
| 1764 | for (i = 0; i < MAX_HWIFS; i++) { |
| 1765 | if (host->ports[i]) |
| 1766 | ide_unregister(host->ports[i]); |
| 1767 | } |
| 1768 | |
| 1769 | ide_host_free(host); |
| 1770 | } |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1771 | EXPORT_SYMBOL_GPL(ide_host_remove); |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1772 | |
| 1773 | void ide_port_scan(ide_hwif_t *hwif) |
| 1774 | { |
Bartlomiej Zolnierkiewicz | 9fd91d9 | 2008-04-27 15:38:23 +0200 | [diff] [blame] | 1775 | ide_port_apply_params(hwif); |
Bartlomiej Zolnierkiewicz | 2dde786 | 2008-04-18 00:46:23 +0200 | [diff] [blame] | 1776 | ide_port_cable_detect(hwif); |
| 1777 | ide_port_init_devices(hwif); |
| 1778 | |
| 1779 | if (ide_probe_port(hwif) < 0) |
| 1780 | return; |
| 1781 | |
| 1782 | hwif->present = 1; |
| 1783 | |
| 1784 | ide_port_tune_devices(hwif); |
| 1785 | ide_acpi_port_init_devices(hwif); |
| 1786 | ide_port_setup_devices(hwif); |
| 1787 | hwif_register_devices(hwif); |
| 1788 | ide_proc_port_register_devices(hwif); |
| 1789 | } |
| 1790 | EXPORT_SYMBOL_GPL(ide_port_scan); |
Bartlomiej Zolnierkiewicz | 3b36f66 | 2008-04-26 22:25:16 +0200 | [diff] [blame] | 1791 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1792 | static void ide_legacy_init_one(hw_regs_t **hws, hw_regs_t *hw, |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 1793 | u8 port_no, const struct ide_port_info *d, |
Bartlomiej Zolnierkiewicz | d9b819a | 2008-04-26 22:25:18 +0200 | [diff] [blame] | 1794 | unsigned long config) |
| 1795 | { |
Bartlomiej Zolnierkiewicz | d9b819a | 2008-04-26 22:25:18 +0200 | [diff] [blame] | 1796 | unsigned long base, ctl; |
| 1797 | int irq; |
| 1798 | |
| 1799 | if (port_no == 0) { |
| 1800 | base = 0x1f0; |
| 1801 | ctl = 0x3f6; |
| 1802 | irq = 14; |
| 1803 | } else { |
| 1804 | base = 0x170; |
| 1805 | ctl = 0x376; |
| 1806 | irq = 15; |
| 1807 | } |
| 1808 | |
Bartlomiej Zolnierkiewicz | d92f1a2 | 2008-04-26 22:25:18 +0200 | [diff] [blame] | 1809 | if (!request_region(base, 8, d->name)) { |
| 1810 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", |
| 1811 | d->name, base, base + 7); |
| 1812 | return; |
| 1813 | } |
| 1814 | |
| 1815 | if (!request_region(ctl, 1, d->name)) { |
| 1816 | printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n", |
| 1817 | d->name, ctl); |
| 1818 | release_region(base, 8); |
| 1819 | return; |
| 1820 | } |
| 1821 | |
Bartlomiej Zolnierkiewicz | d9b819a | 2008-04-26 22:25:18 +0200 | [diff] [blame] | 1822 | ide_std_init_ports(hw, base, ctl); |
| 1823 | hw->irq = irq; |
Bartlomiej Zolnierkiewicz | d427e83 | 2008-06-10 20:56:37 +0200 | [diff] [blame] | 1824 | hw->chipset = d->chipset; |
Bartlomiej Zolnierkiewicz | d6276b5 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 1825 | hw->config = config; |
Bartlomiej Zolnierkiewicz | d9b819a | 2008-04-26 22:25:18 +0200 | [diff] [blame] | 1826 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1827 | hws[port_no] = hw; |
Bartlomiej Zolnierkiewicz | d9b819a | 2008-04-26 22:25:18 +0200 | [diff] [blame] | 1828 | } |
| 1829 | |
Bartlomiej Zolnierkiewicz | 0bfeee7 | 2008-04-26 22:25:16 +0200 | [diff] [blame] | 1830 | int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config) |
Bartlomiej Zolnierkiewicz | 3b36f66 | 2008-04-26 22:25:16 +0200 | [diff] [blame] | 1831 | { |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 1832 | hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL }; |
Bartlomiej Zolnierkiewicz | 3b36f66 | 2008-04-26 22:25:16 +0200 | [diff] [blame] | 1833 | |
| 1834 | memset(&hw, 0, sizeof(hw)); |
| 1835 | |
Bartlomiej Zolnierkiewicz | d9b819a | 2008-04-26 22:25:18 +0200 | [diff] [blame] | 1836 | if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0) |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1837 | ide_legacy_init_one(hws, &hw[0], 0, d, config); |
| 1838 | ide_legacy_init_one(hws, &hw[1], 1, d, config); |
Bartlomiej Zolnierkiewicz | 3b36f66 | 2008-04-26 22:25:16 +0200 | [diff] [blame] | 1839 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1840 | if (hws[0] == NULL && hws[1] == NULL && |
Bartlomiej Zolnierkiewicz | d9b819a | 2008-04-26 22:25:18 +0200 | [diff] [blame] | 1841 | (d->host_flags & IDE_HFLAG_SINGLE)) |
Bartlomiej Zolnierkiewicz | 0bfeee7 | 2008-04-26 22:25:16 +0200 | [diff] [blame] | 1842 | return -ENOENT; |
| 1843 | |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 1844 | return ide_host_add(d, hws, NULL); |
Bartlomiej Zolnierkiewicz | 3b36f66 | 2008-04-26 22:25:16 +0200 | [diff] [blame] | 1845 | } |
| 1846 | EXPORT_SYMBOL_GPL(ide_legacy_device_add); |