Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Borislav Petkov | d3f2084 | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 2 | * IDE ATAPI floppy driver. |
| 3 | * |
Bartlomiej Zolnierkiewicz | 59bca8c | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 4 | * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il> |
| 5 | * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net> |
| 6 | * Copyright (C) 2005 Bartlomiej Zolnierkiewicz |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * This driver supports the following IDE floppy drives: |
| 9 | * |
| 10 | * LS-120/240 SuperDisk |
| 11 | * Iomega Zip 100/250 |
| 12 | * Iomega PC Card Clik!/PocketZip |
| 13 | * |
Borislav Petkov | d3f2084 | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 14 | * For a historical changelog see |
| 15 | * Documentation/ide/ChangeLog.ide-floppy.1996-2002 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | */ |
| 17 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/types.h> |
| 19 | #include <linux/string.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/timer.h> |
| 23 | #include <linux/mm.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/major.h> |
| 26 | #include <linux/errno.h> |
| 27 | #include <linux/genhd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/cdrom.h> |
| 29 | #include <linux/ide.h> |
Bartlomiej Zolnierkiewicz | 3ceca72 | 2008-10-10 22:39:27 +0200 | [diff] [blame] | 30 | #include <linux/hdreg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/bitops.h> |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 32 | #include <linux/mutex.h> |
Borislav Petkov | b98b340 | 2008-10-10 22:39:35 +0200 | [diff] [blame] | 33 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
Bartlomiej Zolnierkiewicz | 89636af | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 35 | #include <scsi/scsi_ioctl.h> |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <asm/byteorder.h> |
Borislav Petkov | 7e8b163 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 38 | #include <linux/irq.h> |
| 39 | #include <linux/uaccess.h> |
| 40 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <asm/unaligned.h> |
| 42 | |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 43 | #include "ide-floppy.h" |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | /* |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 46 | * After each failed packet command we issue a request sense command and retry |
| 47 | * the packet command IDEFLOPPY_MAX_PC_RETRIES times. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | */ |
| 49 | #define IDEFLOPPY_MAX_PC_RETRIES 3 |
| 50 | |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 51 | /* format capacities descriptor codes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #define CAPACITY_INVALID 0x00 |
| 53 | #define CAPACITY_UNFORMATTED 0x01 |
| 54 | #define CAPACITY_CURRENT 0x02 |
| 55 | #define CAPACITY_NO_CARTRIDGE 0x03 |
| 56 | |
Bartlomiej Zolnierkiewicz | baf08f0 | 2008-10-13 21:39:32 +0200 | [diff] [blame] | 57 | /* |
| 58 | * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit |
| 59 | * was apparently being deasserted before the unit was ready to receive data. |
| 60 | */ |
| 61 | #define IDEFLOPPY_PC_DELAY (HZ/20) /* default delay for ZIP 100 (50ms) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Bartlomiej Zolnierkiewicz | 03a2faa | 2009-03-27 12:46:36 +0100 | [diff] [blame] | 63 | static int ide_floppy_callback(ide_drive_t *drive, int dsc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | { |
Bartlomiej Zolnierkiewicz | 0df9627 | 2008-10-17 18:09:16 +0200 | [diff] [blame] | 65 | struct ide_disk_obj *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 2b9efba | 2008-10-13 21:39:31 +0200 | [diff] [blame] | 66 | struct ide_atapi_pc *pc = drive->pc; |
Bartlomiej Zolnierkiewicz | 313afea | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 67 | struct request *rq = pc->rq; |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 68 | int uptodate = pc->error ? 0 : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
Borislav Petkov | 088b1b8 | 2009-01-02 13:34:47 +0100 | [diff] [blame] | 70 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
Borislav Petkov | bcc77d9 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 71 | |
Bartlomiej Zolnierkiewicz | 5e2040fd | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 72 | if (drive->failed_pc == pc) |
| 73 | drive->failed_pc = NULL; |
Bartlomiej Zolnierkiewicz | dd2e9a0 | 2008-07-15 21:22:01 +0200 | [diff] [blame] | 74 | |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 75 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 76 | (rq && rq->cmd_type == REQ_TYPE_BLOCK_PC)) |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 77 | uptodate = 1; /* FIXME */ |
| 78 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { |
Borislav Petkov | ae3a838 | 2009-05-02 10:58:17 +0200 | [diff] [blame] | 79 | |
| 80 | u8 *buf = bio_data(rq->bio); |
Borislav Petkov | a6ff2d3 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 81 | |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 82 | if (!pc->error) { |
| 83 | floppy->sense_key = buf[2] & 0x0F; |
| 84 | floppy->asc = buf[12]; |
| 85 | floppy->ascq = buf[13]; |
| 86 | floppy->progress_indication = buf[15] & 0x80 ? |
| 87 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; |
| 88 | |
Bartlomiej Zolnierkiewicz | 5e2040fd | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 89 | if (drive->failed_pc) |
Borislav Petkov | 088b1b8 | 2009-01-02 13:34:47 +0100 | [diff] [blame] | 90 | ide_debug_log(IDE_DBG_PC, "pc = %x", |
Bartlomiej Zolnierkiewicz | 5e2040fd | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 91 | drive->failed_pc->c[0]); |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 92 | |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 93 | ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x," |
Borislav Petkov | 088b1b8 | 2009-01-02 13:34:47 +0100 | [diff] [blame] | 94 | "ascq = %x", floppy->sense_key, |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 95 | floppy->asc, floppy->ascq); |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 96 | } else |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 97 | printk(KERN_ERR PFX "Error in REQUEST SENSE itself - " |
| 98 | "Aborting request!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 101 | if (rq->cmd_type == REQ_TYPE_SPECIAL) |
Bartlomiej Zolnierkiewicz | 313afea | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 102 | rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL; |
Bartlomiej Zolnierkiewicz | 03a2faa | 2009-03-27 12:46:36 +0100 | [diff] [blame] | 103 | |
| 104 | return uptodate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | } |
| 106 | |
Bartlomiej Zolnierkiewicz | 0df9627 | 2008-10-17 18:09:16 +0200 | [diff] [blame] | 107 | static void ide_floppy_report_error(struct ide_disk_obj *floppy, |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 108 | struct ide_atapi_pc *pc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | { |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 110 | /* suppress error messages resulting from Medium not present */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | if (floppy->sense_key == 0x02 && |
| 112 | floppy->asc == 0x3a && |
| 113 | floppy->ascq == 0x00) |
Borislav Petkov | d652c13 | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 114 | return; |
| 115 | |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 116 | printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, " |
Borislav Petkov | d652c13 | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 117 | "asc = %2x, ascq = %2x\n", |
| 118 | floppy->drive->name, pc->c[0], floppy->sense_key, |
| 119 | floppy->asc, floppy->ascq); |
| 120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | } |
| 122 | |
Bartlomiej Zolnierkiewicz | b788ee9 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 123 | static ide_startstop_t ide_floppy_issue_pc(ide_drive_t *drive, |
| 124 | struct ide_cmd *cmd, |
| 125 | struct ide_atapi_pc *pc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | { |
Bartlomiej Zolnierkiewicz | 0df9627 | 2008-10-17 18:09:16 +0200 | [diff] [blame] | 127 | struct ide_disk_obj *floppy = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
Bartlomiej Zolnierkiewicz | 5e2040fd | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 129 | if (drive->failed_pc == NULL && |
Borislav Petkov | 30d6709 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 130 | pc->c[0] != GPCMD_REQUEST_SENSE) |
Bartlomiej Zolnierkiewicz | 5e2040fd | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 131 | drive->failed_pc = pc; |
Bartlomiej Zolnierkiewicz | 2b9efba | 2008-10-13 21:39:31 +0200 | [diff] [blame] | 132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | /* Set the current packet command */ |
Bartlomiej Zolnierkiewicz | 2b9efba | 2008-10-13 21:39:31 +0200 | [diff] [blame] | 134 | drive->pc = pc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | |
Borislav Petkov | 757ced8 | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 136 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
Tejun Heo | eb6a61b | 2009-04-19 08:46:02 +0900 | [diff] [blame] | 137 | unsigned int done = blk_rq_bytes(drive->hwif->rq); |
| 138 | |
Borislav Petkov | 6e5fa7b | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 139 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
Borislav Petkov | 757ced8 | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 140 | ide_floppy_report_error(floppy, pc); |
Tejun Heo | eb6a61b | 2009-04-19 08:46:02 +0900 | [diff] [blame] | 141 | |
Borislav Petkov | 757ced8 | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 142 | /* Giving up */ |
Bartlomiej Zolnierkiewicz | c152cc1 | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 143 | pc->error = IDE_DRV_ERROR_GENERAL; |
Borislav Petkov | 757ced8 | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 144 | |
Bartlomiej Zolnierkiewicz | 5e2040fd | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 145 | drive->failed_pc = NULL; |
Bartlomiej Zolnierkiewicz | b14c721 | 2008-10-13 21:39:30 +0200 | [diff] [blame] | 146 | drive->pc_callback(drive, 0); |
Tejun Heo | eb6a61b | 2009-04-19 08:46:02 +0900 | [diff] [blame] | 147 | ide_complete_rq(drive, -EIO, done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | return ide_stopped; |
| 149 | } |
| 150 | |
Borislav Petkov | 088b1b8 | 2009-01-02 13:34:47 +0100 | [diff] [blame] | 151 | ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | |
| 153 | pc->retries++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | |
Bartlomiej Zolnierkiewicz | b788ee9 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 155 | return ide_issue_pc(drive, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | } |
| 157 | |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 158 | void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | { |
Bartlomiej Zolnierkiewicz | 7bf7420 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 160 | ide_init_pc(pc); |
Borislav Petkov | 30d6709 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 161 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | pc->c[7] = 255; |
| 163 | pc->c[8] = 255; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 164 | pc->req_xfer = 255; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | } |
| 166 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 167 | /* A mode sense command is used to "sense" floppy parameters. */ |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 168 | void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | { |
Borislav Petkov | 24a5d70 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 170 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 171 | |
Bartlomiej Zolnierkiewicz | 7bf7420 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 172 | ide_init_pc(pc); |
Borislav Petkov | 30d6709 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 173 | pc->c[0] = GPCMD_MODE_SENSE_10; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | pc->c[1] = 0; |
Bartlomiej Zolnierkiewicz | 4de4b9e | 2008-10-10 22:39:36 +0200 | [diff] [blame] | 175 | pc->c[2] = page_code; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | switch (page_code) { |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 178 | case IDEFLOPPY_CAPABILITIES_PAGE: |
| 179 | length += 12; |
| 180 | break; |
| 181 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: |
| 182 | length += 32; |
| 183 | break; |
| 184 | default: |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 185 | printk(KERN_ERR PFX "unsupported page code in %s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | } |
Borislav Petkov | 8f62243 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 187 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 188 | pc->req_xfer = length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | } |
| 190 | |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 191 | static void idefloppy_create_rw_cmd(ide_drive_t *drive, |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 192 | struct ide_atapi_pc *pc, struct request *rq, |
Borislav Petkov | ae7e8dd | 2008-02-02 19:56:36 +0100 | [diff] [blame] | 193 | unsigned long sector) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | { |
Bartlomiej Zolnierkiewicz | 0df9627 | 2008-10-17 18:09:16 +0200 | [diff] [blame] | 195 | struct ide_disk_obj *floppy = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | int block = sector / floppy->bs_factor; |
Tejun Heo | 9780e2d | 2009-05-07 22:24:40 +0900 | [diff] [blame] | 197 | int blocks = blk_rq_sectors(rq) / floppy->bs_factor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | int cmd = rq_data_dir(rq); |
| 199 | |
Borislav Petkov | 088b1b8 | 2009-01-02 13:34:47 +0100 | [diff] [blame] | 200 | ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
Bartlomiej Zolnierkiewicz | 7bf7420 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 202 | ide_init_pc(pc); |
Borislav Petkov | ae7e8dd | 2008-02-02 19:56:36 +0100 | [diff] [blame] | 203 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
| 204 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); |
Borislav Petkov | 8f62243 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 205 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
Borislav Petkov | ae7e8dd | 2008-02-02 19:56:36 +0100 | [diff] [blame] | 206 | |
Borislav Petkov | 20cd93be | 2008-07-23 19:56:00 +0200 | [diff] [blame] | 207 | memcpy(rq->cmd, pc->c, 12); |
| 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | pc->rq = rq; |
Christoph Hellwig | 7b6d91d | 2010-08-07 18:20:39 +0200 | [diff] [blame] | 210 | if (rq->cmd_flags & REQ_WRITE) |
Borislav Petkov | 6e5fa7b | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 211 | pc->flags |= PC_FLAG_WRITING; |
Borislav Petkov | 19f52a7 | 2009-05-04 09:53:03 +0200 | [diff] [blame] | 212 | |
Bartlomiej Zolnierkiewicz | 5e33109 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 213 | pc->flags |= PC_FLAG_DMA_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | } |
| 215 | |
Bartlomiej Zolnierkiewicz | 0df9627 | 2008-10-17 18:09:16 +0200 | [diff] [blame] | 216 | static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy, |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 217 | struct ide_atapi_pc *pc, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | { |
Bartlomiej Zolnierkiewicz | 7bf7420 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 219 | ide_init_pc(pc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 221 | pc->rq = rq; |
Tejun Heo | 34b7d2c | 2009-05-07 22:24:43 +0900 | [diff] [blame] | 222 | if (blk_rq_bytes(rq)) { |
Bartlomiej Zolnierkiewicz | 5e33109 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 223 | pc->flags |= PC_FLAG_DMA_OK; |
Tejun Heo | 8968932 | 2009-04-19 07:00:42 +0900 | [diff] [blame] | 224 | if (rq_data_dir(rq) == WRITE) |
| 225 | pc->flags |= PC_FLAG_WRITING; |
| 226 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | } |
| 228 | |
Bartlomiej Zolnierkiewicz | 806f80a | 2008-10-17 18:09:14 +0200 | [diff] [blame] | 229 | static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, |
| 230 | struct request *rq, sector_t block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | { |
Bartlomiej Zolnierkiewicz | 0df9627 | 2008-10-17 18:09:16 +0200 | [diff] [blame] | 232 | struct ide_disk_obj *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | b788ee9 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 233 | struct ide_cmd cmd; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 234 | struct ide_atapi_pc *pc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
Bartlomiej Zolnierkiewicz | 349d12a | 2009-03-31 20:15:26 +0200 | [diff] [blame] | 236 | ide_debug_log(IDE_DBG_FUNC, "enter, cmd: 0x%x\n", rq->cmd[0]); |
| 237 | |
Borislav Petkov | 088b1b8 | 2009-01-02 13:34:47 +0100 | [diff] [blame] | 238 | if (drive->debug_mask & IDE_DBG_RQ) |
| 239 | blk_dump_rq_flags(rq, (rq->rq_disk |
| 240 | ? rq->rq_disk->disk_name |
| 241 | : "dev?")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | |
| 243 | if (rq->errors >= ERROR_MAX) { |
Bartlomiej Zolnierkiewicz | 313afea | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 244 | if (drive->failed_pc) { |
Bartlomiej Zolnierkiewicz | 5e2040fd | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 245 | ide_floppy_report_error(floppy, drive->failed_pc); |
Bartlomiej Zolnierkiewicz | 313afea | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 246 | drive->failed_pc = NULL; |
| 247 | } else |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 248 | printk(KERN_ERR PFX "%s: I/O error\n", drive->name); |
| 249 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 250 | if (rq->cmd_type == REQ_TYPE_SPECIAL) { |
Bartlomiej Zolnierkiewicz | 6902a53 | 2009-03-27 12:46:43 +0100 | [diff] [blame] | 251 | rq->errors = 0; |
Bartlomiej Zolnierkiewicz | f974b19 | 2009-03-27 12:46:44 +0100 | [diff] [blame] | 252 | ide_complete_rq(drive, 0, blk_rq_bytes(rq)); |
Bartlomiej Zolnierkiewicz | 313afea | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 253 | return ide_stopped; |
| 254 | } else |
| 255 | goto out_end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 257 | |
| 258 | switch (rq->cmd_type) { |
| 259 | case REQ_TYPE_FS: |
Tejun Heo | 9780e2d | 2009-05-07 22:24:40 +0900 | [diff] [blame] | 260 | if (((long)blk_rq_pos(rq) % floppy->bs_factor) || |
| 261 | (blk_rq_sectors(rq) % floppy->bs_factor)) { |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 262 | printk(KERN_ERR PFX "%s: unsupported r/w rq size\n", |
| 263 | drive->name); |
Bartlomiej Zolnierkiewicz | 313afea | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 264 | goto out_end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | } |
Bartlomiej Zolnierkiewicz | 2e8a6f8 | 2008-10-10 22:39:36 +0200 | [diff] [blame] | 266 | pc = &floppy->queued_pc; |
Bartlomiej Zolnierkiewicz | 806f80a | 2008-10-17 18:09:14 +0200 | [diff] [blame] | 267 | idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block); |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 268 | break; |
| 269 | case REQ_TYPE_SPECIAL: |
| 270 | case REQ_TYPE_SENSE: |
Tejun Heo | ac0b011 | 2009-04-19 07:00:42 +0900 | [diff] [blame] | 271 | pc = (struct ide_atapi_pc *)rq->special; |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 272 | break; |
| 273 | case REQ_TYPE_BLOCK_PC: |
Bartlomiej Zolnierkiewicz | 2e8a6f8 | 2008-10-10 22:39:36 +0200 | [diff] [blame] | 274 | pc = &floppy->queued_pc; |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 275 | idefloppy_blockpc_cmd(floppy, pc, rq); |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 276 | break; |
| 277 | default: |
Bartlomiej Zolnierkiewicz | 2c7eaa4 | 2009-06-15 22:16:10 +0200 | [diff] [blame] | 278 | BUG(); |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 279 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Borislav Petkov | 0687532 | 2009-04-19 07:00:42 +0900 | [diff] [blame] | 281 | ide_prep_sense(drive, rq); |
| 282 | |
Bartlomiej Zolnierkiewicz | b788ee9 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 283 | memset(&cmd, 0, sizeof(cmd)); |
| 284 | |
Bartlomiej Zolnierkiewicz | 22981694 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 285 | if (rq_data_dir(rq)) |
Bartlomiej Zolnierkiewicz | b788ee9 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 286 | cmd.tf_flags |= IDE_TFLAG_WRITE; |
| 287 | |
| 288 | cmd.rq = rq; |
Bartlomiej Zolnierkiewicz | 22981694 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 289 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 290 | if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) { |
Borislav Petkov | dfb7e62 | 2009-05-01 20:35:21 +0200 | [diff] [blame] | 291 | ide_init_sg_cmd(&cmd, blk_rq_bytes(rq)); |
Bartlomiej Zolnierkiewicz | b788ee9 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 292 | ide_map_sg(drive, &cmd); |
Borislav Petkov | 3eb76c1 | 2009-03-13 21:16:12 +0100 | [diff] [blame] | 293 | } |
Borislav Petkov | b98b340 | 2008-10-10 22:39:35 +0200 | [diff] [blame] | 294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | pc->rq = rq; |
Bartlomiej Zolnierkiewicz | 5d41893 | 2008-07-15 21:21:57 +0200 | [diff] [blame] | 296 | |
Bartlomiej Zolnierkiewicz | b788ee9 | 2009-03-27 12:46:46 +0100 | [diff] [blame] | 297 | return ide_floppy_issue_pc(drive, &cmd, pc); |
Bartlomiej Zolnierkiewicz | 313afea | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 298 | out_end: |
| 299 | drive->failed_pc = NULL; |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 300 | if (rq->cmd_type != REQ_TYPE_FS && rq->errors == 0) |
Bartlomiej Zolnierkiewicz | 89f78b32 | 2009-03-27 12:46:43 +0100 | [diff] [blame] | 301 | rq->errors = -EIO; |
Bartlomiej Zolnierkiewicz | 5e95524 | 2009-06-23 11:27:27 +0000 | [diff] [blame] | 302 | ide_complete_rq(drive, -EIO, blk_rq_bytes(rq)); |
Bartlomiej Zolnierkiewicz | 313afea | 2009-03-27 12:46:34 +0100 | [diff] [blame] | 303 | return ide_stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | /* |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 307 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
| 308 | * parameters and use the LBA parameters instead. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | */ |
Linus Torvalds | 07bd3f4 | 2009-01-02 16:12:51 +0100 | [diff] [blame] | 310 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive, |
| 311 | struct ide_atapi_pc *pc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | { |
Bartlomiej Zolnierkiewicz | 0df9627 | 2008-10-17 18:09:16 +0200 | [diff] [blame] | 313 | struct ide_disk_obj *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 2ac07d9 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 314 | struct gendisk *disk = floppy->disk; |
Borislav Petkov | d9a6830 | 2009-05-02 10:43:11 +0200 | [diff] [blame] | 315 | u8 *page, buf[40]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | int capacity, lba_capacity; |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 317 | u16 transfer_rate, sector_size, cyls, rpm; |
| 318 | u8 heads, sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | |
Linus Torvalds | 07bd3f4 | 2009-01-02 16:12:51 +0100 | [diff] [blame] | 320 | ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 321 | |
Borislav Petkov | d9a6830 | 2009-05-02 10:43:11 +0200 | [diff] [blame] | 322 | if (ide_queue_pc_tail(drive, disk, pc, buf, pc->req_xfer)) { |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 323 | printk(KERN_ERR PFX "Can't get flexible disk page params\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | return 1; |
| 325 | } |
Bartlomiej Zolnierkiewicz | 49cac39 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 326 | |
Borislav Petkov | d9a6830 | 2009-05-02 10:43:11 +0200 | [diff] [blame] | 327 | if (buf[3] & 0x80) |
Bartlomiej Zolnierkiewicz | da16787 | 2008-10-17 18:09:11 +0200 | [diff] [blame] | 328 | drive->dev_flags |= IDE_DFLAG_WP; |
Bartlomiej Zolnierkiewicz | 49cac39 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 329 | else |
Bartlomiej Zolnierkiewicz | da16787 | 2008-10-17 18:09:11 +0200 | [diff] [blame] | 330 | drive->dev_flags &= ~IDE_DFLAG_WP; |
Bartlomiej Zolnierkiewicz | 49cac39 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 331 | |
Bartlomiej Zolnierkiewicz | da16787 | 2008-10-17 18:09:11 +0200 | [diff] [blame] | 332 | set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP)); |
Bartlomiej Zolnierkiewicz | 49cac39 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 333 | |
Borislav Petkov | d9a6830 | 2009-05-02 10:43:11 +0200 | [diff] [blame] | 334 | page = &buf[8]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
Borislav Petkov | d9a6830 | 2009-05-02 10:43:11 +0200 | [diff] [blame] | 336 | transfer_rate = be16_to_cpup((__be16 *)&buf[8 + 2]); |
| 337 | sector_size = be16_to_cpup((__be16 *)&buf[8 + 6]); |
| 338 | cyls = be16_to_cpup((__be16 *)&buf[8 + 8]); |
| 339 | rpm = be16_to_cpup((__be16 *)&buf[8 + 28]); |
| 340 | heads = buf[8 + 4]; |
| 341 | sectors = buf[8 + 5]; |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 342 | |
| 343 | capacity = cyls * heads * sectors * sector_size; |
| 344 | |
| 345 | if (memcmp(page, &floppy->flexible_disk_page, 32)) |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 346 | printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | "%d sector size, %d rpm\n", |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 348 | drive->name, capacity / 1024, cyls, heads, |
| 349 | sectors, transfer_rate / 8, sector_size, rpm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 351 | memcpy(&floppy->flexible_disk_page, page, 32); |
| 352 | drive->bios_cyl = cyls; |
| 353 | drive->bios_head = heads; |
| 354 | drive->bios_sect = sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | lba_capacity = floppy->blocks * floppy->block_size; |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | if (capacity < lba_capacity) { |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 358 | printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | "bytes, but the drive only handles %d\n", |
| 360 | drive->name, lba_capacity, capacity); |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 361 | floppy->blocks = floppy->block_size ? |
| 362 | capacity / floppy->block_size : 0; |
Bartlomiej Zolnierkiewicz | 6f84083 | 2008-10-17 18:09:10 +0200 | [diff] [blame] | 363 | drive->capacity64 = floppy->blocks * floppy->bs_factor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | } |
Bartlomiej Zolnierkiewicz | 6f84083 | 2008-10-17 18:09:10 +0200 | [diff] [blame] | 365 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | return 0; |
| 367 | } |
| 368 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | /* |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 370 | * Determine if a media is present in the floppy drive, and if so, its LBA |
| 371 | * capacity. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | */ |
Bartlomiej Zolnierkiewicz | 806f80a | 2008-10-17 18:09:14 +0200 | [diff] [blame] | 373 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | { |
Bartlomiej Zolnierkiewicz | 0df9627 | 2008-10-17 18:09:16 +0200 | [diff] [blame] | 375 | struct ide_disk_obj *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 2ac07d9 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 376 | struct gendisk *disk = floppy->disk; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 377 | struct ide_atapi_pc pc; |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 378 | u8 *cap_desc; |
Bartlomiej Zolnierkiewicz | 41fa9f8 | 2009-03-31 20:15:25 +0200 | [diff] [blame] | 379 | u8 pc_buf[256], header_len, desc_cnt; |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 380 | int i, rc = 1, blocks, length; |
| 381 | |
Bartlomiej Zolnierkiewicz | 349d12a | 2009-03-31 20:15:26 +0200 | [diff] [blame] | 382 | ide_debug_log(IDE_DBG_FUNC, "enter"); |
| 383 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | drive->bios_cyl = 0; |
| 385 | drive->bios_head = drive->bios_sect = 0; |
Alan Cox | fdb77da | 2007-02-17 02:40:20 +0100 | [diff] [blame] | 386 | floppy->blocks = 0; |
| 387 | floppy->bs_factor = 1; |
Bartlomiej Zolnierkiewicz | 6f84083 | 2008-10-17 18:09:10 +0200 | [diff] [blame] | 388 | drive->capacity64 = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 390 | ide_floppy_create_read_capacity_cmd(&pc); |
Borislav Petkov | b13345f | 2009-05-02 10:26:12 +0200 | [diff] [blame] | 391 | if (ide_queue_pc_tail(drive, disk, &pc, pc_buf, pc.req_xfer)) { |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 392 | printk(KERN_ERR PFX "Can't get floppy parameters\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | return 1; |
| 394 | } |
Borislav Petkov | b13345f | 2009-05-02 10:26:12 +0200 | [diff] [blame] | 395 | header_len = pc_buf[3]; |
| 396 | cap_desc = &pc_buf[4]; |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 397 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 399 | for (i = 0; i < desc_cnt; i++) { |
| 400 | unsigned int desc_start = 4 + i*8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | |
Borislav Petkov | b13345f | 2009-05-02 10:26:12 +0200 | [diff] [blame] | 402 | blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]); |
| 403 | length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]); |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 404 | |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 405 | ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, " |
Borislav Petkov | 088b1b8 | 2009-01-02 13:34:47 +0100 | [diff] [blame] | 406 | "%d sector size", |
| 407 | i, blocks * length / 1024, |
| 408 | blocks, length); |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 409 | |
| 410 | if (i) |
| 411 | continue; |
| 412 | /* |
| 413 | * the code below is valid only for the 1st descriptor, ie i=0 |
| 414 | */ |
| 415 | |
Borislav Petkov | b13345f | 2009-05-02 10:26:12 +0200 | [diff] [blame] | 416 | switch (pc_buf[desc_start + 4] & 0x03) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
| 418 | case CAPACITY_UNFORMATTED: |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 419 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 420 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | * If it is not a clik drive, break out |
| 422 | * (maintains previous driver behaviour) |
| 423 | */ |
| 424 | break; |
| 425 | case CAPACITY_CURRENT: |
| 426 | /* Normal Zip/LS-120 disks */ |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 427 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 428 | printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d " |
| 429 | "sector size\n", |
| 430 | drive->name, blocks * length / 1024, |
| 431 | blocks, length); |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 432 | memcpy(&floppy->cap_desc, cap_desc, 8); |
| 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | if (!length || length % 512) { |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 435 | printk(KERN_NOTICE PFX "%s: %d bytes block size" |
| 436 | " not supported\n", drive->name, length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | } else { |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 438 | floppy->blocks = blocks; |
| 439 | floppy->block_size = length; |
| 440 | floppy->bs_factor = length / 512; |
| 441 | if (floppy->bs_factor != 1) |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 442 | printk(KERN_NOTICE PFX "%s: Warning: " |
| 443 | "non 512 bytes block size not " |
| 444 | "fully supported\n", |
| 445 | drive->name); |
Bartlomiej Zolnierkiewicz | 6f84083 | 2008-10-17 18:09:10 +0200 | [diff] [blame] | 446 | drive->capacity64 = |
| 447 | floppy->blocks * floppy->bs_factor; |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 448 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | } |
| 450 | break; |
| 451 | case CAPACITY_NO_CARTRIDGE: |
| 452 | /* |
| 453 | * This is a KERN_ERR so it appears on screen |
| 454 | * for the user to see |
| 455 | */ |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 456 | printk(KERN_ERR PFX "%s: No disk in drive\n", |
| 457 | drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | break; |
| 459 | case CAPACITY_INVALID: |
Borislav Petkov | 7b35572 | 2008-10-13 21:39:35 +0200 | [diff] [blame] | 460 | printk(KERN_ERR PFX "%s: Invalid capacity for disk " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | "in drive\n", drive->name); |
| 462 | break; |
| 463 | } |
Borislav Petkov | 088b1b8 | 2009-01-02 13:34:47 +0100 | [diff] [blame] | 464 | ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d", |
Borislav Petkov | b13345f | 2009-05-02 10:26:12 +0200 | [diff] [blame] | 465 | pc_buf[desc_start + 4] & 0x03); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | /* Clik! disk does not support get_flexible_disk_page */ |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 469 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
Linus Torvalds | 07bd3f4 | 2009-01-02 16:12:51 +0100 | [diff] [blame] | 470 | (void) ide_floppy_get_flexible_disk_page(drive, &pc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | return rc; |
| 473 | } |
| 474 | |
Bartlomiej Zolnierkiewicz | 806f80a | 2008-10-17 18:09:14 +0200 | [diff] [blame] | 475 | static void ide_floppy_setup(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | { |
Bartlomiej Zolnierkiewicz | 806f80a | 2008-10-17 18:09:14 +0200 | [diff] [blame] | 477 | struct ide_disk_obj *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 478 | u16 *id = drive->id; |
Bartlomiej Zolnierkiewicz | 2e8a6f8 | 2008-10-10 22:39:36 +0200 | [diff] [blame] | 479 | |
Bartlomiej Zolnierkiewicz | 85e3903 | 2008-10-13 21:39:32 +0200 | [diff] [blame] | 480 | drive->pc_callback = ide_floppy_callback; |
Borislav Petkov | 3ad6776 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 481 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | /* |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 483 | * We used to check revisions here. At this point however I'm giving up. |
| 484 | * Just assume they are all broken, its easier. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | * |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 486 | * The actual reason for the workarounds was likely a driver bug after |
| 487 | * all rather than a firmware bug, and the workaround below used to hide |
| 488 | * it. It should be fixed as of version 1.9, but to be on the safe side |
| 489 | * we'll leave the limitation below for the 2.2.x tree. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 491 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 492 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | /* This value will be visible in the /proc/ide/hdx/settings */ |
Bartlomiej Zolnierkiewicz | baf08f0 | 2008-10-13 21:39:32 +0200 | [diff] [blame] | 494 | drive->pc_delay = IDEFLOPPY_PC_DELAY; |
Martin K. Petersen | 086fa5f | 2010-02-26 00:20:38 -0500 | [diff] [blame] | 495 | blk_queue_max_hw_sectors(drive->queue, 64); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | /* |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 499 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
| 500 | * nasty clicking noises without it, so please don't remove this. |
| 501 | */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 502 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
Martin K. Petersen | 086fa5f | 2010-02-26 00:20:38 -0500 | [diff] [blame] | 503 | blk_queue_max_hw_sectors(drive->queue, 64); |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 504 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
Bartlomiej Zolnierkiewicz | 0578042 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 505 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
Bartlomiej Zolnierkiewicz | 42619d3 | 2008-10-17 18:09:11 +0200 | [diff] [blame] | 506 | drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | } |
| 508 | |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 509 | (void) ide_floppy_get_capacity(drive); |
Bartlomiej Zolnierkiewicz | 1e874f4 | 2008-10-10 22:39:27 +0200 | [diff] [blame] | 510 | |
| 511 | ide_proc_register_driver(drive, floppy->driver); |
Bartlomiej Zolnierkiewicz | ae9f9f0 | 2008-10-17 18:09:10 +0200 | [diff] [blame] | 512 | |
| 513 | drive->dev_flags |= IDE_DFLAG_ATTACH; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | } |
Bartlomiej Zolnierkiewicz | 806f80a | 2008-10-17 18:09:14 +0200 | [diff] [blame] | 515 | |
| 516 | static void ide_floppy_flush(ide_drive_t *drive) |
| 517 | { |
| 518 | } |
| 519 | |
| 520 | static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk) |
| 521 | { |
| 522 | int ret = 0; |
| 523 | |
| 524 | if (ide_do_test_unit_ready(drive, disk)) |
| 525 | ide_do_start_stop(drive, disk, 1); |
| 526 | |
| 527 | ret = ide_floppy_get_capacity(drive); |
| 528 | |
| 529 | set_capacity(disk, ide_gd_capacity(drive)); |
| 530 | |
| 531 | return ret; |
| 532 | } |
| 533 | |
| 534 | const struct ide_disk_ops ide_atapi_disk_ops = { |
| 535 | .check = ide_check_atapi_device, |
| 536 | .get_capacity = ide_floppy_get_capacity, |
| 537 | .setup = ide_floppy_setup, |
| 538 | .flush = ide_floppy_flush, |
| 539 | .init_media = ide_floppy_init_media, |
| 540 | .set_doorlock = ide_set_media_lock, |
| 541 | .do_request = ide_floppy_do_request, |
Bartlomiej Zolnierkiewicz | 806f80a | 2008-10-17 18:09:14 +0200 | [diff] [blame] | 542 | .ioctl = ide_floppy_ioctl, |
| 543 | }; |