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 | |
Bartlomiej Zolnierkiewicz | 51509ee | 2008-10-10 22:39:34 +0200 | [diff] [blame] | 18 | #define DRV_NAME "ide-floppy" |
| 19 | |
Borislav Petkov | fc6c5bc | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 20 | #define IDEFLOPPY_VERSION "1.00" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/module.h> |
| 23 | #include <linux/types.h> |
| 24 | #include <linux/string.h> |
| 25 | #include <linux/kernel.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/timer.h> |
| 28 | #include <linux/mm.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <linux/major.h> |
| 31 | #include <linux/errno.h> |
| 32 | #include <linux/genhd.h> |
| 33 | #include <linux/slab.h> |
| 34 | #include <linux/cdrom.h> |
| 35 | #include <linux/ide.h> |
Bartlomiej Zolnierkiewicz | 3ceca72 | 2008-10-10 22:39:27 +0200 | [diff] [blame] | 36 | #include <linux/hdreg.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/bitops.h> |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 38 | #include <linux/mutex.h> |
Borislav Petkov | b98b340 | 2008-10-10 22:39:35 +0200 | [diff] [blame] | 39 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
Bartlomiej Zolnierkiewicz | 89636af | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 41 | #include <scsi/scsi_ioctl.h> |
| 42 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <asm/byteorder.h> |
Borislav Petkov | 7e8b163 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 44 | #include <linux/irq.h> |
| 45 | #include <linux/uaccess.h> |
| 46 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <asm/unaligned.h> |
| 48 | |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 49 | #include "ide-floppy.h" |
| 50 | |
Borislav Petkov | f373bd8 | 2008-02-02 19:56:36 +0100 | [diff] [blame] | 51 | /* define to see debug info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #define IDEFLOPPY_DEBUG_LOG 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | /* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */ |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 55 | #define IDEFLOPPY_DEBUG(fmt, args...) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
| 57 | #if IDEFLOPPY_DEBUG_LOG |
Borislav Petkov | bcc77d9 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 58 | #define debug_log(fmt, args...) \ |
| 59 | printk(KERN_INFO "ide-floppy: " fmt, ## args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #else |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 61 | #define debug_log(fmt, args...) do {} while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | #endif |
| 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | /* |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 65 | * After each failed packet command we issue a request sense command and retry |
| 66 | * the packet command IDEFLOPPY_MAX_PC_RETRIES times. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | */ |
| 68 | #define IDEFLOPPY_MAX_PC_RETRIES 3 |
| 69 | |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 70 | /* format capacities descriptor codes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | #define CAPACITY_INVALID 0x00 |
| 72 | #define CAPACITY_UNFORMATTED 0x01 |
| 73 | #define CAPACITY_CURRENT 0x02 |
| 74 | #define CAPACITY_NO_CARTRIDGE 0x03 |
| 75 | |
Bartlomiej Zolnierkiewicz | baf08f0 | 2008-10-13 21:39:32 +0200 | [diff] [blame] | 76 | /* |
| 77 | * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit |
| 78 | * was apparently being deasserted before the unit was ready to receive data. |
| 79 | */ |
| 80 | #define IDEFLOPPY_PC_DELAY (HZ/20) /* default delay for ZIP 100 (50ms) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 82 | /* Error code returned in rq->errors to the higher part of the driver. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | #define IDEFLOPPY_ERROR_GENERAL 101 |
| 84 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 85 | static DEFINE_MUTEX(idefloppy_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Bartlomiej Zolnierkiewicz | 08da591 | 2008-07-24 22:53:15 +0200 | [diff] [blame] | 87 | static void idefloppy_cleanup_obj(struct kref *); |
| 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk) |
| 90 | { |
| 91 | struct ide_floppy_obj *floppy = NULL; |
| 92 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 93 | mutex_lock(&idefloppy_ref_mutex); |
Borislav Petkov | 5aeddf9 | 2008-10-13 21:39:34 +0200 | [diff] [blame] | 94 | floppy = ide_drv_g(disk, ide_floppy_obj); |
Bartlomiej Zolnierkiewicz | 08da591 | 2008-07-24 22:53:15 +0200 | [diff] [blame] | 95 | if (floppy) { |
Bartlomiej Zolnierkiewicz | d3e33ff | 2008-08-05 18:16:59 +0200 | [diff] [blame] | 96 | if (ide_device_get(floppy->drive)) |
Bartlomiej Zolnierkiewicz | 08da591 | 2008-07-24 22:53:15 +0200 | [diff] [blame] | 97 | floppy = NULL; |
Bartlomiej Zolnierkiewicz | d3e33ff | 2008-08-05 18:16:59 +0200 | [diff] [blame] | 98 | else |
| 99 | kref_get(&floppy->kref); |
Bartlomiej Zolnierkiewicz | 08da591 | 2008-07-24 22:53:15 +0200 | [diff] [blame] | 100 | } |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 101 | mutex_unlock(&idefloppy_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | return floppy; |
| 103 | } |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | static void ide_floppy_put(struct ide_floppy_obj *floppy) |
| 106 | { |
Bartlomiej Zolnierkiewicz | d3e33ff | 2008-08-05 18:16:59 +0200 | [diff] [blame] | 107 | ide_drive_t *drive = floppy->drive; |
| 108 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 109 | mutex_lock(&idefloppy_ref_mutex); |
Borislav Petkov | 9a24b63 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 110 | kref_put(&floppy->kref, idefloppy_cleanup_obj); |
Bartlomiej Zolnierkiewicz | d3e33ff | 2008-08-05 18:16:59 +0200 | [diff] [blame] | 111 | ide_device_put(drive); |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 112 | mutex_unlock(&idefloppy_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | /* |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 116 | * Used to finish servicing a request. For read/write requests, we will call |
| 117 | * ide_end_request to pass to the next buffer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | */ |
Borislav Petkov | c2b2b29 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 119 | static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | { |
| 121 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 122 | struct request *rq = HWGROUP(drive)->rq; |
| 123 | int error; |
| 124 | |
Borislav Petkov | bcc77d9 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 125 | debug_log("Reached %s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
| 127 | switch (uptodate) { |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 128 | case 0: error = IDEFLOPPY_ERROR_GENERAL; break; |
| 129 | case 1: error = 0; break; |
| 130 | default: error = uptodate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | } |
| 132 | if (error) |
| 133 | floppy->failed_pc = NULL; |
| 134 | /* Why does this happen? */ |
| 135 | if (!rq) |
| 136 | return 0; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 137 | if (!blk_special_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | /* our real local end request function */ |
| 139 | ide_end_request(drive, uptodate, nsecs); |
| 140 | return 0; |
| 141 | } |
| 142 | rq->errors = error; |
| 143 | /* fixme: need to move this local also */ |
| 144 | ide_end_drive_cmd(drive, 0, 0); |
| 145 | return 0; |
| 146 | } |
| 147 | |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 148 | static void idefloppy_update_buffers(ide_drive_t *drive, |
| 149 | struct ide_atapi_pc *pc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | { |
| 151 | struct request *rq = pc->rq; |
| 152 | struct bio *bio = rq->bio; |
| 153 | |
| 154 | while ((bio = rq->bio) != NULL) |
Borislav Petkov | c2b2b29 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 155 | idefloppy_end_request(drive, 1, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | } |
| 157 | |
Bartlomiej Zolnierkiewicz | b14c721 | 2008-10-13 21:39:30 +0200 | [diff] [blame] | 158 | static void ide_floppy_callback(ide_drive_t *drive, int dsc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | { |
| 160 | idefloppy_floppy_t *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 2b9efba | 2008-10-13 21:39:31 +0200 | [diff] [blame] | 161 | struct ide_atapi_pc *pc = drive->pc; |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 162 | int uptodate = pc->error ? 0 : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Borislav Petkov | bcc77d9 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 164 | debug_log("Reached %s\n", __func__); |
| 165 | |
Bartlomiej Zolnierkiewicz | dd2e9a0 | 2008-07-15 21:22:01 +0200 | [diff] [blame] | 166 | if (floppy->failed_pc == pc) |
| 167 | floppy->failed_pc = NULL; |
| 168 | |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 169 | if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 || |
| 170 | (pc->rq && blk_pc_request(pc->rq))) |
| 171 | uptodate = 1; /* FIXME */ |
| 172 | else if (pc->c[0] == GPCMD_REQUEST_SENSE) { |
Bartlomiej Zolnierkiewicz | 2b9efba | 2008-10-13 21:39:31 +0200 | [diff] [blame] | 173 | u8 *buf = pc->buf; |
Borislav Petkov | a6ff2d3 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 174 | |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 175 | if (!pc->error) { |
| 176 | floppy->sense_key = buf[2] & 0x0F; |
| 177 | floppy->asc = buf[12]; |
| 178 | floppy->ascq = buf[13]; |
| 179 | floppy->progress_indication = buf[15] & 0x80 ? |
| 180 | (u16)get_unaligned((u16 *)&buf[16]) : 0x10000; |
| 181 | |
| 182 | if (floppy->failed_pc) |
| 183 | debug_log("pc = %x, ", floppy->failed_pc->c[0]); |
| 184 | |
Borislav Petkov | a6ff2d3 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 185 | debug_log("sense key = %x, asc = %x, ascq = %x\n", |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 186 | floppy->sense_key, floppy->asc, floppy->ascq); |
| 187 | } else |
| 188 | printk(KERN_ERR "Error in REQUEST SENSE itself - " |
| 189 | "Aborting request!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
Borislav Petkov | 81f4938 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 192 | idefloppy_end_request(drive, uptodate, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | } |
| 194 | |
Borislav Petkov | d652c13 | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 195 | static void ide_floppy_report_error(idefloppy_floppy_t *floppy, |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 196 | struct ide_atapi_pc *pc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | { |
Borislav Petkov | d652c13 | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 198 | /* supress error messages resulting from Medium not present */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | if (floppy->sense_key == 0x02 && |
| 200 | floppy->asc == 0x3a && |
| 201 | floppy->ascq == 0x00) |
Borislav Petkov | d652c13 | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 202 | return; |
| 203 | |
| 204 | printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, " |
| 205 | "asc = %2x, ascq = %2x\n", |
| 206 | floppy->drive->name, pc->c[0], floppy->sense_key, |
| 207 | floppy->asc, floppy->ascq); |
| 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | } |
| 210 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 211 | static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 212 | struct ide_atapi_pc *pc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | { |
| 214 | idefloppy_floppy_t *floppy = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | if (floppy->failed_pc == NULL && |
Borislav Petkov | 30d6709 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 217 | pc->c[0] != GPCMD_REQUEST_SENSE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | floppy->failed_pc = pc; |
Bartlomiej Zolnierkiewicz | 2b9efba | 2008-10-13 21:39:31 +0200 | [diff] [blame] | 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | /* Set the current packet command */ |
Bartlomiej Zolnierkiewicz | 2b9efba | 2008-10-13 21:39:31 +0200 | [diff] [blame] | 221 | drive->pc = pc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Borislav Petkov | 757ced8 | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 223 | if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) { |
Borislav Petkov | 6e5fa7b | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 224 | if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR)) |
Borislav Petkov | 757ced8 | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 225 | ide_floppy_report_error(floppy, pc); |
| 226 | /* Giving up */ |
| 227 | pc->error = IDEFLOPPY_ERROR_GENERAL; |
| 228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | floppy->failed_pc = NULL; |
Bartlomiej Zolnierkiewicz | b14c721 | 2008-10-13 21:39:30 +0200 | [diff] [blame] | 230 | drive->pc_callback(drive, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | return ide_stopped; |
| 232 | } |
| 233 | |
Borislav Petkov | bcc77d9 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 234 | debug_log("Retry number - %d\n", pc->retries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
| 236 | pc->retries++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
Bartlomiej Zolnierkiewicz | baf08f0 | 2008-10-13 21:39:32 +0200 | [diff] [blame] | 238 | return ide_issue_pc(drive, WAIT_FLOPPY_CMD, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | } |
| 240 | |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 241 | void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | { |
Bartlomiej Zolnierkiewicz | 7bf7420 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 243 | ide_init_pc(pc); |
Borislav Petkov | 30d6709 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 244 | pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | pc->c[7] = 255; |
| 246 | pc->c[8] = 255; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 247 | pc->req_xfer = 255; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | } |
| 249 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 250 | /* A mode sense command is used to "sense" floppy parameters. */ |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 251 | 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] | 252 | { |
Borislav Petkov | 24a5d70 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 253 | u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */ |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 254 | |
Bartlomiej Zolnierkiewicz | 7bf7420 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 255 | ide_init_pc(pc); |
Borislav Petkov | 30d6709 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 256 | pc->c[0] = GPCMD_MODE_SENSE_10; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | pc->c[1] = 0; |
Bartlomiej Zolnierkiewicz | 4de4b9e | 2008-10-10 22:39:36 +0200 | [diff] [blame] | 258 | pc->c[2] = page_code; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
| 260 | switch (page_code) { |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 261 | case IDEFLOPPY_CAPABILITIES_PAGE: |
| 262 | length += 12; |
| 263 | break; |
| 264 | case IDEFLOPPY_FLEXIBLE_DISK_PAGE: |
| 265 | length += 32; |
| 266 | break; |
| 267 | default: |
| 268 | printk(KERN_ERR "ide-floppy: unsupported page code " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | "in create_mode_sense_cmd\n"); |
| 270 | } |
Borislav Petkov | 8f62243 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 271 | put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]); |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 272 | pc->req_xfer = length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | } |
| 274 | |
Borislav Petkov | ae7e8dd | 2008-02-02 19:56:36 +0100 | [diff] [blame] | 275 | static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy, |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 276 | struct ide_atapi_pc *pc, struct request *rq, |
Borislav Petkov | ae7e8dd | 2008-02-02 19:56:36 +0100 | [diff] [blame] | 277 | unsigned long sector) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | { |
| 279 | int block = sector / floppy->bs_factor; |
| 280 | int blocks = rq->nr_sectors / floppy->bs_factor; |
| 281 | int cmd = rq_data_dir(rq); |
| 282 | |
Borislav Petkov | ae7e8dd | 2008-02-02 19:56:36 +0100 | [diff] [blame] | 283 | debug_log("create_rw10_cmd: block == %d, blocks == %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | block, blocks); |
| 285 | |
Bartlomiej Zolnierkiewicz | 7bf7420 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 286 | ide_init_pc(pc); |
Borislav Petkov | ae7e8dd | 2008-02-02 19:56:36 +0100 | [diff] [blame] | 287 | pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10; |
| 288 | put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]); |
Borislav Petkov | 8f62243 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 289 | put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]); |
Borislav Petkov | ae7e8dd | 2008-02-02 19:56:36 +0100 | [diff] [blame] | 290 | |
Borislav Petkov | 20cd93b | 2008-07-23 19:56:00 +0200 | [diff] [blame] | 291 | memcpy(rq->cmd, pc->c, 12); |
| 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | pc->rq = rq; |
Borislav Petkov | b98b340 | 2008-10-10 22:39:35 +0200 | [diff] [blame] | 294 | pc->b_count = 0; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 295 | if (rq->cmd_flags & REQ_RW) |
Borislav Petkov | 6e5fa7b | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 296 | pc->flags |= PC_FLAG_WRITING; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 297 | pc->buf = NULL; |
| 298 | pc->req_xfer = pc->buf_size = blocks * floppy->block_size; |
Bartlomiej Zolnierkiewicz | 5e33109 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 299 | pc->flags |= PC_FLAG_DMA_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } |
| 301 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 302 | static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy, |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 303 | struct ide_atapi_pc *pc, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | { |
Bartlomiej Zolnierkiewicz | 7bf7420 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 305 | ide_init_pc(pc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | memcpy(pc->c, rq->cmd, sizeof(pc->c)); |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 307 | pc->rq = rq; |
Borislav Petkov | b98b340 | 2008-10-10 22:39:35 +0200 | [diff] [blame] | 308 | pc->b_count = 0; |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 309 | if (rq->data_len && rq_data_dir(rq) == WRITE) |
Borislav Petkov | 6e5fa7b | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 310 | pc->flags |= PC_FLAG_WRITING; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 311 | pc->buf = rq->data; |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 312 | if (rq->bio) |
Bartlomiej Zolnierkiewicz | 5e33109 | 2008-07-15 21:21:56 +0200 | [diff] [blame] | 313 | pc->flags |= PC_FLAG_DMA_OK; |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 314 | /* |
| 315 | * possibly problematic, doesn't look like ide-floppy correctly |
| 316 | * handled scattered requests if dma fails... |
| 317 | */ |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 318 | pc->req_xfer = pc->buf_size = rq->data_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 321 | static ide_startstop_t idefloppy_do_request(ide_drive_t *drive, |
| 322 | struct request *rq, sector_t block_s) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | { |
| 324 | idefloppy_floppy_t *floppy = drive->driver_data; |
Borislav Petkov | b98b340 | 2008-10-10 22:39:35 +0200 | [diff] [blame] | 325 | ide_hwif_t *hwif = drive->hwif; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 326 | struct ide_atapi_pc *pc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | unsigned long block = (unsigned long)block_s; |
| 328 | |
Borislav Petkov | b98b340 | 2008-10-10 22:39:35 +0200 | [diff] [blame] | 329 | debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n", |
| 330 | __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?", |
| 331 | rq->cmd[0], rq->cmd_type, rq->errors); |
| 332 | |
| 333 | debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n", |
| 334 | __func__, (long)rq->sector, rq->nr_sectors, |
| 335 | rq->current_nr_sectors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
| 337 | if (rq->errors >= ERROR_MAX) { |
Borislav Petkov | d652c13 | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 338 | if (floppy->failed_pc) |
| 339 | ide_floppy_report_error(floppy, floppy->failed_pc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | else |
| 341 | printk(KERN_ERR "ide-floppy: %s: I/O error\n", |
| 342 | drive->name); |
Borislav Petkov | c2b2b29 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 343 | idefloppy_end_request(drive, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | return ide_stopped; |
| 345 | } |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 346 | if (blk_fs_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | if (((long)rq->sector % floppy->bs_factor) || |
| 348 | (rq->nr_sectors % floppy->bs_factor)) { |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 349 | printk(KERN_ERR "%s: unsupported r/w request size\n", |
| 350 | drive->name); |
Borislav Petkov | c2b2b29 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 351 | idefloppy_end_request(drive, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | return ide_stopped; |
| 353 | } |
Bartlomiej Zolnierkiewicz | 2e8a6f8 | 2008-10-10 22:39:36 +0200 | [diff] [blame] | 354 | pc = &floppy->queued_pc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | idefloppy_create_rw_cmd(floppy, pc, rq, block); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 356 | } else if (blk_special_request(rq)) { |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 357 | pc = (struct ide_atapi_pc *) rq->buffer; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 358 | } else if (blk_pc_request(rq)) { |
Bartlomiej Zolnierkiewicz | 2e8a6f8 | 2008-10-10 22:39:36 +0200 | [diff] [blame] | 359 | pc = &floppy->queued_pc; |
Jens Axboe | 3d6392c | 2007-07-09 12:38:05 +0200 | [diff] [blame] | 360 | idefloppy_blockpc_cmd(floppy, pc, rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | } else { |
| 362 | blk_dump_rq_flags(rq, |
| 363 | "ide-floppy: unsupported command in queue"); |
Borislav Petkov | c2b2b29 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 364 | idefloppy_end_request(drive, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | return ide_stopped; |
| 366 | } |
| 367 | |
Borislav Petkov | b98b340 | 2008-10-10 22:39:35 +0200 | [diff] [blame] | 368 | ide_init_sg_cmd(drive, rq); |
| 369 | ide_map_sg(drive, rq); |
| 370 | |
| 371 | pc->sg = hwif->sg_table; |
| 372 | pc->sg_cnt = hwif->sg_nents; |
| 373 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | pc->rq = rq; |
Bartlomiej Zolnierkiewicz | 5d41893 | 2008-07-15 21:21:57 +0200 | [diff] [blame] | 375 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | return idefloppy_issue_pc(drive, pc); |
| 377 | } |
| 378 | |
| 379 | /* |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 380 | * Look at the flexible disk page parameters. We ignore the CHS capacity |
| 381 | * parameters and use the LBA parameters instead. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | */ |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 383 | static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | { |
| 385 | idefloppy_floppy_t *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 2ac07d9 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 386 | struct gendisk *disk = floppy->disk; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 387 | struct ide_atapi_pc pc; |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 388 | u8 *page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | int capacity, lba_capacity; |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 390 | u16 transfer_rate, sector_size, cyls, rpm; |
| 391 | u8 heads, sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 393 | ide_floppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE); |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 394 | |
Bartlomiej Zolnierkiewicz | 2ac07d9 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 395 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 396 | printk(KERN_ERR "ide-floppy: Can't get flexible disk page" |
| 397 | " parameters\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | return 1; |
| 399 | } |
Bartlomiej Zolnierkiewicz | 49cac39 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 400 | |
| 401 | if (pc.buf[3] & 0x80) |
| 402 | drive->atapi_flags |= IDE_AFLAG_WP; |
| 403 | else |
| 404 | drive->atapi_flags &= ~IDE_AFLAG_WP; |
| 405 | |
| 406 | set_disk_ro(disk, !!(drive->atapi_flags & IDE_AFLAG_WP)); |
| 407 | |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 408 | page = &pc.buf[8]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
Harvey Harrison | 85ae98a | 2008-07-16 20:33:47 +0200 | [diff] [blame] | 410 | transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]); |
| 411 | sector_size = be16_to_cpup((__be16 *)&pc.buf[8 + 6]); |
| 412 | cyls = be16_to_cpup((__be16 *)&pc.buf[8 + 8]); |
| 413 | rpm = be16_to_cpup((__be16 *)&pc.buf[8 + 28]); |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 414 | heads = pc.buf[8 + 4]; |
| 415 | sectors = pc.buf[8 + 5]; |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 416 | |
| 417 | capacity = cyls * heads * sectors * sector_size; |
| 418 | |
| 419 | if (memcmp(page, &floppy->flexible_disk_page, 32)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, " |
| 421 | "%d sector size, %d rpm\n", |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 422 | drive->name, capacity / 1024, cyls, heads, |
| 423 | sectors, transfer_rate / 8, sector_size, rpm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 425 | memcpy(&floppy->flexible_disk_page, page, 32); |
| 426 | drive->bios_cyl = cyls; |
| 427 | drive->bios_head = heads; |
| 428 | drive->bios_sect = sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | lba_capacity = floppy->blocks * floppy->block_size; |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 430 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | if (capacity < lba_capacity) { |
| 432 | printk(KERN_NOTICE "%s: The disk reports a capacity of %d " |
| 433 | "bytes, but the drive only handles %d\n", |
| 434 | drive->name, lba_capacity, capacity); |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 435 | floppy->blocks = floppy->block_size ? |
| 436 | capacity / floppy->block_size : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | } |
| 438 | return 0; |
| 439 | } |
| 440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | /* |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 442 | * Determine if a media is present in the floppy drive, and if so, its LBA |
| 443 | * capacity. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | */ |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 445 | static int ide_floppy_get_capacity(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | { |
| 447 | idefloppy_floppy_t *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 2ac07d9 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 448 | struct gendisk *disk = floppy->disk; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 449 | struct ide_atapi_pc pc; |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 450 | u8 *cap_desc; |
| 451 | u8 header_len, desc_cnt; |
| 452 | int i, rc = 1, blocks, length; |
| 453 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | drive->bios_cyl = 0; |
| 455 | drive->bios_head = drive->bios_sect = 0; |
Alan Cox | fdb77da | 2007-02-17 02:40:20 +0100 | [diff] [blame] | 456 | floppy->blocks = 0; |
| 457 | floppy->bs_factor = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | set_capacity(floppy->disk, 0); |
| 459 | |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 460 | ide_floppy_create_read_capacity_cmd(&pc); |
Bartlomiej Zolnierkiewicz | 2ac07d9 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 461 | if (ide_queue_pc_tail(drive, disk, &pc)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n"); |
| 463 | return 1; |
| 464 | } |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 465 | header_len = pc.buf[3]; |
| 466 | cap_desc = &pc.buf[4]; |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 467 | desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 469 | for (i = 0; i < desc_cnt; i++) { |
| 470 | unsigned int desc_start = 4 + i*8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | |
Harvey Harrison | 85ae98a | 2008-07-16 20:33:47 +0200 | [diff] [blame] | 472 | blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]); |
| 473 | length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]); |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 474 | |
| 475 | debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n", |
| 476 | i, blocks * length / 1024, blocks, length); |
| 477 | |
| 478 | if (i) |
| 479 | continue; |
| 480 | /* |
| 481 | * the code below is valid only for the 1st descriptor, ie i=0 |
| 482 | */ |
| 483 | |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 484 | switch (pc.buf[desc_start + 4] & 0x03) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | /* Clik! drive returns this instead of CAPACITY_CURRENT */ |
| 486 | case CAPACITY_UNFORMATTED: |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 487 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 488 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | * If it is not a clik drive, break out |
| 490 | * (maintains previous driver behaviour) |
| 491 | */ |
| 492 | break; |
| 493 | case CAPACITY_CURRENT: |
| 494 | /* Normal Zip/LS-120 disks */ |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 495 | if (memcmp(cap_desc, &floppy->cap_desc, 8)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | printk(KERN_INFO "%s: %dkB, %d blocks, %d " |
| 497 | "sector size\n", drive->name, |
| 498 | blocks * length / 1024, blocks, length); |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 499 | memcpy(&floppy->cap_desc, cap_desc, 8); |
| 500 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | if (!length || length % 512) { |
| 502 | printk(KERN_NOTICE "%s: %d bytes block size " |
| 503 | "not supported\n", drive->name, length); |
| 504 | } else { |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 505 | floppy->blocks = blocks; |
| 506 | floppy->block_size = length; |
| 507 | floppy->bs_factor = length / 512; |
| 508 | if (floppy->bs_factor != 1) |
| 509 | printk(KERN_NOTICE "%s: warning: non " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | "512 bytes block size not " |
| 511 | "fully supported\n", |
| 512 | drive->name); |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 513 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | } |
| 515 | break; |
| 516 | case CAPACITY_NO_CARTRIDGE: |
| 517 | /* |
| 518 | * This is a KERN_ERR so it appears on screen |
| 519 | * for the user to see |
| 520 | */ |
| 521 | printk(KERN_ERR "%s: No disk in drive\n", drive->name); |
| 522 | break; |
| 523 | case CAPACITY_INVALID: |
| 524 | printk(KERN_ERR "%s: Invalid capacity for disk " |
| 525 | "in drive\n", drive->name); |
| 526 | break; |
| 527 | } |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 528 | debug_log("Descriptor 0 Code: %d\n", |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 529 | pc.buf[desc_start + 4] & 0x03); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | } |
| 531 | |
| 532 | /* Clik! disk does not support get_flexible_disk_page */ |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 533 | if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) |
Borislav Petkov | 8e81bbb | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 534 | (void) ide_floppy_get_flexible_disk_page(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | |
Bartlomiej Zolnierkiewicz | 2ac07d9 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 536 | set_capacity(disk, floppy->blocks * floppy->bs_factor); |
| 537 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | return rc; |
| 539 | } |
| 540 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 541 | static sector_t idefloppy_capacity(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | { |
| 543 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 544 | unsigned long capacity = floppy->blocks * floppy->bs_factor; |
| 545 | |
| 546 | return capacity; |
| 547 | } |
| 548 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 549 | #ifdef CONFIG_IDE_PROC_FS |
Elias Oltmanns | 92f1f8f | 2008-10-10 22:39:40 +0200 | [diff] [blame] | 550 | ide_devset_rw_field(bios_cyl, bios_cyl); |
| 551 | ide_devset_rw_field(bios_head, bios_head); |
| 552 | ide_devset_rw_field(bios_sect, bios_sect); |
Bartlomiej Zolnierkiewicz | baf08f0 | 2008-10-13 21:39:32 +0200 | [diff] [blame] | 553 | ide_devset_rw_field(ticks, pc_delay); |
Bartlomiej Zolnierkiewicz | 8185d5a | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 554 | |
Elias Oltmanns | 92f1f8f | 2008-10-10 22:39:40 +0200 | [diff] [blame] | 555 | static const struct ide_proc_devset idefloppy_settings[] = { |
| 556 | IDE_PROC_DEVSET(bios_cyl, 0, 1023), |
| 557 | IDE_PROC_DEVSET(bios_head, 0, 255), |
| 558 | IDE_PROC_DEVSET(bios_sect, 0, 63), |
| 559 | IDE_PROC_DEVSET(ticks, 0, 255), |
| 560 | { 0 }, |
Bartlomiej Zolnierkiewicz | 8185d5a | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 561 | }; |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 562 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 564 | static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | { |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 566 | u16 *id = drive->id; |
Borislav Petkov | 3ad6776 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 567 | u8 gcw[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 569 | *((u16 *)&gcw) = id[ATA_ID_CONFIG]; |
Bartlomiej Zolnierkiewicz | 2e8a6f8 | 2008-10-10 22:39:36 +0200 | [diff] [blame] | 570 | |
Bartlomiej Zolnierkiewicz | 85e3903 | 2008-10-13 21:39:32 +0200 | [diff] [blame] | 571 | drive->pc_callback = ide_floppy_callback; |
| 572 | drive->pc_update_buffers = idefloppy_update_buffers; |
| 573 | drive->pc_io_buffers = ide_io_buffers; |
Borislav Petkov | 3ad6776 | 2008-04-18 00:46:25 +0200 | [diff] [blame] | 574 | |
| 575 | if (((gcw[0] & 0x60) >> 5) == 1) |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 576 | drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | /* |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 578 | * We used to check revisions here. At this point however I'm giving up. |
| 579 | * Just assume they are all broken, its easier. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | * |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 581 | * The actual reason for the workarounds was likely a driver bug after |
| 582 | * all rather than a firmware bug, and the workaround below used to hide |
| 583 | * it. It should be fixed as of version 1.9, but to be on the safe side |
| 584 | * we'll leave the limitation below for the 2.2.x tree. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 586 | if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) { |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 587 | drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | /* This value will be visible in the /proc/ide/hdx/settings */ |
Bartlomiej Zolnierkiewicz | baf08f0 | 2008-10-13 21:39:32 +0200 | [diff] [blame] | 589 | drive->pc_delay = IDEFLOPPY_PC_DELAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | blk_queue_max_sectors(drive->queue, 64); |
| 591 | } |
| 592 | |
| 593 | /* |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 594 | * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes |
| 595 | * nasty clicking noises without it, so please don't remove this. |
| 596 | */ |
Bartlomiej Zolnierkiewicz | 4dde449 | 2008-10-10 22:39:19 +0200 | [diff] [blame] | 597 | if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | blk_queue_max_sectors(drive->queue, 64); |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 599 | drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE; |
Bartlomiej Zolnierkiewicz | 0578042 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 600 | /* IOMEGA Clik! drives do not support lock/unlock commands */ |
| 601 | drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | } |
| 603 | |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 604 | (void) ide_floppy_get_capacity(drive); |
Bartlomiej Zolnierkiewicz | 1e874f4 | 2008-10-10 22:39:27 +0200 | [diff] [blame] | 605 | |
| 606 | ide_proc_register_driver(drive, floppy->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | } |
| 608 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 609 | static void ide_floppy_remove(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | { |
| 611 | idefloppy_floppy_t *floppy = drive->driver_data; |
| 612 | struct gendisk *g = floppy->disk; |
| 613 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 614 | ide_proc_unregister_driver(drive, floppy->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
| 616 | del_gendisk(g); |
| 617 | |
| 618 | ide_floppy_put(floppy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | } |
| 620 | |
Borislav Petkov | 9a24b63 | 2008-02-02 19:56:33 +0100 | [diff] [blame] | 621 | static void idefloppy_cleanup_obj(struct kref *kref) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | { |
Borislav Petkov | 5aeddf9 | 2008-10-13 21:39:34 +0200 | [diff] [blame] | 623 | struct ide_floppy_obj *floppy = to_ide_drv(kref, ide_floppy_obj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | ide_drive_t *drive = floppy->drive; |
| 625 | struct gendisk *g = floppy->disk; |
| 626 | |
| 627 | drive->driver_data = NULL; |
| 628 | g->private_data = NULL; |
| 629 | put_disk(g); |
| 630 | kfree(floppy); |
| 631 | } |
| 632 | |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 633 | #ifdef CONFIG_IDE_PROC_FS |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 634 | static int proc_idefloppy_read_capacity(char *page, char **start, off_t off, |
| 635 | int count, int *eof, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | { |
| 637 | ide_drive_t*drive = (ide_drive_t *)data; |
| 638 | int len; |
| 639 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 640 | len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive)); |
| 641 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } |
| 643 | |
| 644 | static ide_proc_entry_t idefloppy_proc[] = { |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 645 | { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL }, |
| 646 | { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | { NULL, 0, NULL, NULL } |
| 648 | }; |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 649 | #endif /* CONFIG_IDE_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 651 | static int ide_floppy_probe(ide_drive_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | static ide_driver_t idefloppy_driver = { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 654 | .gen_driver = { |
Laurent Riffard | 4ef3b8f | 2005-11-18 22:15:40 +0100 | [diff] [blame] | 655 | .owner = THIS_MODULE, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 656 | .name = "ide-floppy", |
| 657 | .bus = &ide_bus_type, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 658 | }, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 659 | .probe = ide_floppy_probe, |
| 660 | .remove = ide_floppy_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | .version = IDEFLOPPY_VERSION, |
| 662 | .media = ide_floppy, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | .do_request = idefloppy_do_request, |
Borislav Petkov | c2b2b29 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 664 | .end_request = idefloppy_end_request, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | .error = __ide_error, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 666 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | .proc = idefloppy_proc, |
Bartlomiej Zolnierkiewicz | 8185d5a | 2008-10-10 22:39:28 +0200 | [diff] [blame] | 668 | .settings = idefloppy_settings, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 669 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | }; |
| 671 | |
| 672 | static int idefloppy_open(struct inode *inode, struct file *filp) |
| 673 | { |
| 674 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 675 | struct ide_floppy_obj *floppy; |
| 676 | ide_drive_t *drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | int ret = 0; |
| 678 | |
Borislav Petkov | bcc77d9 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 679 | debug_log("Reached %s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 681 | floppy = ide_floppy_get(disk); |
| 682 | if (!floppy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | return -ENXIO; |
| 684 | |
| 685 | drive = floppy->drive; |
| 686 | |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 687 | floppy->openers++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 689 | if (floppy->openers == 1) { |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 690 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | /* Just in case */ |
| 692 | |
Bartlomiej Zolnierkiewicz | de699ad | 2008-10-10 22:39:39 +0200 | [diff] [blame] | 693 | if (ide_do_test_unit_ready(drive, disk)) |
Bartlomiej Zolnierkiewicz | 0c8a6c7 | 2008-10-10 22:39:39 +0200 | [diff] [blame] | 694 | ide_do_start_stop(drive, disk, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | |
Borislav Petkov | 194ec0c | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 696 | if (ide_floppy_get_capacity(drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | && (filp->f_flags & O_NDELAY) == 0 |
| 698 | /* |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 699 | * Allow O_NDELAY to open a drive without a disk, or with an |
| 700 | * unreadable disk, so that we can get the format capacity |
| 701 | * of the drive or begin the format - Sam |
| 702 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | ) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | ret = -EIO; |
| 705 | goto out_put_floppy; |
| 706 | } |
| 707 | |
Bartlomiej Zolnierkiewicz | 49cac39 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 708 | if ((drive->atapi_flags & IDE_AFLAG_WP) && (filp->f_mode & 2)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | ret = -EROFS; |
| 710 | goto out_put_floppy; |
| 711 | } |
Bartlomiej Zolnierkiewicz | e996fc8 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 712 | |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 713 | drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED; |
Bartlomiej Zolnierkiewicz | 0578042 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 714 | ide_set_media_lock(drive, disk, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | check_disk_change(inode->i_bdev); |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 716 | } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | ret = -EBUSY; |
| 718 | goto out_put_floppy; |
| 719 | } |
| 720 | return 0; |
| 721 | |
| 722 | out_put_floppy: |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 723 | floppy->openers--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | ide_floppy_put(floppy); |
| 725 | return ret; |
| 726 | } |
| 727 | |
| 728 | static int idefloppy_release(struct inode *inode, struct file *filp) |
| 729 | { |
| 730 | struct gendisk *disk = inode->i_bdev->bd_disk; |
Borislav Petkov | 5aeddf9 | 2008-10-13 21:39:34 +0200 | [diff] [blame] | 731 | struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | ide_drive_t *drive = floppy->drive; |
Borislav Petkov | bcc77d9 | 2008-02-02 19:56:34 +0100 | [diff] [blame] | 733 | |
| 734 | debug_log("Reached %s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 736 | if (floppy->openers == 1) { |
Bartlomiej Zolnierkiewicz | 0578042 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 737 | ide_set_media_lock(drive, disk, 0); |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 738 | drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | } |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 740 | |
| 741 | floppy->openers--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
| 743 | ide_floppy_put(floppy); |
| 744 | |
| 745 | return 0; |
| 746 | } |
| 747 | |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 748 | static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 749 | { |
Borislav Petkov | 5aeddf9 | 2008-10-13 21:39:34 +0200 | [diff] [blame] | 750 | struct ide_floppy_obj *floppy = ide_drv_g(bdev->bd_disk, |
| 751 | ide_floppy_obj); |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 752 | ide_drive_t *drive = floppy->drive; |
| 753 | |
| 754 | geo->heads = drive->bios_head; |
| 755 | geo->sectors = drive->bios_sect; |
| 756 | geo->cylinders = (u16)drive->bios_cyl; /* truncate */ |
| 757 | return 0; |
| 758 | } |
| 759 | |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 760 | static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc, |
| 761 | unsigned long arg, unsigned int cmd) |
Borislav Petkov | 20bf7bd | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 762 | { |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 763 | idefloppy_floppy_t *floppy = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 0578042 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 764 | struct gendisk *disk = floppy->disk; |
Bartlomiej Zolnierkiewicz | e996fc8 | 2008-10-10 22:39:37 +0200 | [diff] [blame] | 765 | int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0; |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 766 | |
Borislav Petkov | 20bf7bd | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 767 | if (floppy->openers > 1) |
| 768 | return -EBUSY; |
| 769 | |
Bartlomiej Zolnierkiewicz | 0578042 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 770 | ide_set_media_lock(drive, disk, prevent); |
Borislav Petkov | 20bf7bd | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 771 | |
Bartlomiej Zolnierkiewicz | 0c8a6c7 | 2008-10-10 22:39:39 +0200 | [diff] [blame] | 772 | if (cmd == CDROMEJECT) |
| 773 | ide_do_start_stop(drive, disk, 2); |
Borislav Petkov | 20bf7bd | 2008-02-02 19:56:35 +0100 | [diff] [blame] | 774 | |
| 775 | return 0; |
| 776 | } |
| 777 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | static int idefloppy_ioctl(struct inode *inode, struct file *file, |
| 779 | unsigned int cmd, unsigned long arg) |
| 780 | { |
| 781 | struct block_device *bdev = inode->i_bdev; |
Borislav Petkov | 5aeddf9 | 2008-10-13 21:39:34 +0200 | [diff] [blame] | 782 | struct ide_floppy_obj *floppy = ide_drv_g(bdev->bd_disk, |
| 783 | ide_floppy_obj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | ide_drive_t *drive = floppy->drive; |
Borislav Petkov | 8e55512 | 2008-04-18 00:46:27 +0200 | [diff] [blame] | 785 | struct ide_atapi_pc pc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | void __user *argp = (void __user *)arg; |
Ondrej Zary | 07203f6 | 2005-11-10 00:25:15 +0100 | [diff] [blame] | 787 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | |
Bartlomiej Zolnierkiewicz | d56c99e | 2008-10-10 22:39:34 +0200 | [diff] [blame] | 789 | if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 790 | return ide_floppy_lockdoor(drive, &pc, arg, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | |
Bartlomiej Zolnierkiewicz | d56c99e | 2008-10-10 22:39:34 +0200 | [diff] [blame] | 792 | err = ide_floppy_format_ioctl(drive, file, cmd, argp); |
| 793 | if (err != -ENOTTY) |
| 794 | return err; |
Bartlomiej Zolnierkiewicz | 89636af | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 795 | |
| 796 | /* |
| 797 | * skip SCSI_IOCTL_SEND_COMMAND (deprecated) |
| 798 | * and CDROM_SEND_PACKET (legacy) ioctls |
| 799 | */ |
| 800 | if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND) |
| 801 | err = scsi_cmd_ioctl(file, bdev->bd_disk->queue, |
| 802 | bdev->bd_disk, cmd, argp); |
Bartlomiej Zolnierkiewicz | 89636af | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 803 | |
| 804 | if (err == -ENOTTY) |
| 805 | err = generic_ide_ioctl(drive, file, bdev, cmd, arg); |
| 806 | |
| 807 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | } |
| 809 | |
| 810 | static int idefloppy_media_changed(struct gendisk *disk) |
| 811 | { |
Borislav Petkov | 5aeddf9 | 2008-10-13 21:39:34 +0200 | [diff] [blame] | 812 | struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | ide_drive_t *drive = floppy->drive; |
Borislav Petkov | 6e5fa7b | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 814 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | |
| 816 | /* do not scan partitions twice if this is a removable device */ |
| 817 | if (drive->attach) { |
| 818 | drive->attach = 0; |
| 819 | return 0; |
| 820 | } |
Borislav Petkov | ea68d27 | 2008-07-23 19:56:01 +0200 | [diff] [blame] | 821 | ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED); |
| 822 | drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED; |
Borislav Petkov | 6e5fa7b | 2008-02-02 19:56:37 +0100 | [diff] [blame] | 823 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | } |
| 825 | |
| 826 | static int idefloppy_revalidate_disk(struct gendisk *disk) |
| 827 | { |
Borislav Petkov | 5aeddf9 | 2008-10-13 21:39:34 +0200 | [diff] [blame] | 828 | struct ide_floppy_obj *floppy = ide_drv_g(disk, ide_floppy_obj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | set_capacity(disk, idefloppy_capacity(floppy->drive)); |
| 830 | return 0; |
| 831 | } |
| 832 | |
| 833 | static struct block_device_operations idefloppy_ops = { |
Paolo Ciarrocchi | 52d3ccf | 2008-04-26 17:36:41 +0200 | [diff] [blame] | 834 | .owner = THIS_MODULE, |
| 835 | .open = idefloppy_open, |
| 836 | .release = idefloppy_release, |
| 837 | .ioctl = idefloppy_ioctl, |
| 838 | .getgeo = idefloppy_getgeo, |
| 839 | .media_changed = idefloppy_media_changed, |
| 840 | .revalidate_disk = idefloppy_revalidate_disk |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | }; |
| 842 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 843 | static int ide_floppy_probe(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | { |
| 845 | idefloppy_floppy_t *floppy; |
| 846 | struct gendisk *g; |
| 847 | |
| 848 | if (!strstr("ide-floppy", drive->driver_req)) |
| 849 | goto failed; |
Bartlomiej Zolnierkiewicz | 2a92466 | 2008-10-10 22:39:24 +0200 | [diff] [blame] | 850 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | if (drive->media != ide_floppy) |
| 852 | goto failed; |
Bartlomiej Zolnierkiewicz | 2a92466 | 2008-10-10 22:39:24 +0200 | [diff] [blame] | 853 | |
Bartlomiej Zolnierkiewicz | 51509ee | 2008-10-10 22:39:34 +0200 | [diff] [blame] | 854 | if (!ide_check_atapi_device(drive, DRV_NAME)) { |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 855 | printk(KERN_ERR "ide-floppy: %s: not supported by this version" |
| 856 | " of ide-floppy\n", drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | goto failed; |
| 858 | } |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 859 | floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL); |
| 860 | if (!floppy) { |
| 861 | printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy" |
| 862 | " structure\n", drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | goto failed; |
| 864 | } |
| 865 | |
| 866 | g = alloc_disk(1 << PARTN_BITS); |
| 867 | if (!g) |
| 868 | goto out_free_floppy; |
| 869 | |
| 870 | ide_init_disk(g, drive); |
| 871 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | kref_init(&floppy->kref); |
| 873 | |
| 874 | floppy->drive = drive; |
| 875 | floppy->driver = &idefloppy_driver; |
| 876 | floppy->disk = g; |
| 877 | |
| 878 | g->private_data = &floppy->driver; |
| 879 | |
| 880 | drive->driver_data = floppy; |
| 881 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 882 | idefloppy_setup(drive, floppy); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 883 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | g->minors = 1 << PARTN_BITS; |
| 885 | g->driverfs_dev = &drive->gendev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0; |
| 887 | g->fops = &idefloppy_ops; |
| 888 | drive->attach = 1; |
| 889 | add_disk(g); |
| 890 | return 0; |
| 891 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | out_free_floppy: |
| 893 | kfree(floppy); |
| 894 | failed: |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 895 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | } |
| 897 | |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 898 | static void __exit idefloppy_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 900 | driver_unregister(&idefloppy_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | } |
| 902 | |
Bartlomiej Zolnierkiewicz | 17514e8 | 2005-11-19 22:24:35 +0100 | [diff] [blame] | 903 | static int __init idefloppy_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | { |
| 905 | printk("ide-floppy driver " IDEFLOPPY_VERSION "\n"); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 906 | return driver_register(&idefloppy_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | } |
| 908 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 909 | MODULE_ALIAS("ide:*m-floppy*"); |
Bartlomiej Zolnierkiewicz | 0127854 | 2008-10-10 22:39:38 +0200 | [diff] [blame] | 910 | MODULE_ALIAS("ide-floppy"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | module_init(idefloppy_init); |
| 912 | module_exit(idefloppy_exit); |
| 913 | MODULE_LICENSE("GPL"); |
Borislav Petkov | 0571c7a | 2008-02-02 19:56:38 +0100 | [diff] [blame] | 914 | MODULE_DESCRIPTION("ATAPI FLOPPY Driver"); |
| 915 | |