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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Borislav Petkovd3f20842008-02-01 23:09:33 +01002 * IDE ATAPI floppy driver.
3 *
Bartlomiej Zolnierkiewicz59bca8c2008-02-01 23:09:33 +01004 * 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 Petkov0571c7a2008-02-02 19:56:38 +01007 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 * 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 Petkovd3f20842008-02-01 23:09:33 +010014 * For a historical changelog see
15 * Documentation/ide/ChangeLog.ide-floppy.1996-2002
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 */
17
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#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>
28#include <linux/slab.h>
29#include <linux/cdrom.h>
30#include <linux/ide.h>
Bartlomiej Zolnierkiewicz3ceca722008-10-10 22:39:27 +020031#include <linux/hdreg.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include <linux/bitops.h>
Arjan van de Vencf8b8972006-03-23 03:00:45 -080033#include <linux/mutex.h>
Borislav Petkovb98b3402008-10-10 22:39:35 +020034#include <linux/scatterlist.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
Bartlomiej Zolnierkiewicz89636af2007-07-20 01:11:59 +020036#include <scsi/scsi_ioctl.h>
37
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include <asm/byteorder.h>
Borislav Petkov7e8b1632008-02-02 19:56:34 +010039#include <linux/irq.h>
40#include <linux/uaccess.h>
41#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <asm/unaligned.h>
43
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +020044#include "ide-floppy.h"
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +010047 * After each failed packet command we issue a request sense command and retry
48 * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 */
50#define IDEFLOPPY_MAX_PC_RETRIES 3
51
Borislav Petkov194ec0c2008-02-02 19:56:35 +010052/* format capacities descriptor codes */
Linus Torvalds1da177e2005-04-16 15:20:36 -070053#define CAPACITY_INVALID 0x00
54#define CAPACITY_UNFORMATTED 0x01
55#define CAPACITY_CURRENT 0x02
56#define CAPACITY_NO_CARTRIDGE 0x03
57
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +020058/*
59 * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit
60 * was apparently being deasserted before the unit was ready to receive data.
61 */
62#define IDEFLOPPY_PC_DELAY (HZ/20) /* default delay for ZIP 100 (50ms) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
Bartlomiej Zolnierkiewicz03a2faa2009-03-27 12:46:36 +010064static int ide_floppy_callback(ide_drive_t *drive, int dsc)
Linus Torvalds1da177e2005-04-16 15:20:36 -070065{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +020066 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +020067 struct ide_atapi_pc *pc = drive->pc;
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +010068 struct request *rq = pc->rq;
Borislav Petkov81f49382008-07-15 21:21:56 +020069 int uptodate = pc->error ? 0 : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -070070
Borislav Petkov088b1b82009-01-02 13:34:47 +010071 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovbcc77d92008-02-02 19:56:34 +010072
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010073 if (drive->failed_pc == pc)
74 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewiczdd2e9a02008-07-15 21:22:01 +020075
Borislav Petkov81f49382008-07-15 21:21:56 +020076 if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +010077 (rq && blk_pc_request(rq)))
Borislav Petkov81f49382008-07-15 21:21:56 +020078 uptodate = 1; /* FIXME */
79 else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
Borislav Petkovae3a8382009-05-02 10:58:17 +020080
81 u8 *buf = bio_data(rq->bio);
Borislav Petkova6ff2d32008-02-02 19:56:34 +010082
Borislav Petkov81f49382008-07-15 21:21:56 +020083 if (!pc->error) {
84 floppy->sense_key = buf[2] & 0x0F;
85 floppy->asc = buf[12];
86 floppy->ascq = buf[13];
87 floppy->progress_indication = buf[15] & 0x80 ?
88 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
89
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010090 if (drive->failed_pc)
Borislav Petkov088b1b82009-01-02 13:34:47 +010091 ide_debug_log(IDE_DBG_PC, "pc = %x",
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010092 drive->failed_pc->c[0]);
Borislav Petkov81f49382008-07-15 21:21:56 +020093
Borislav Petkov7b355722008-10-13 21:39:35 +020094 ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x,"
Borislav Petkov088b1b82009-01-02 13:34:47 +010095 "ascq = %x", floppy->sense_key,
Borislav Petkov7b355722008-10-13 21:39:35 +020096 floppy->asc, floppy->ascq);
Borislav Petkov81f49382008-07-15 21:21:56 +020097 } else
Borislav Petkov7b355722008-10-13 21:39:35 +020098 printk(KERN_ERR PFX "Error in REQUEST SENSE itself - "
99 "Aborting request!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
Bartlomiej Zolnierkiewicz03a2faa2009-03-27 12:46:36 +0100102 if (blk_special_request(rq))
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100103 rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL;
Bartlomiej Zolnierkiewicz03a2faa2009-03-27 12:46:36 +0100104
105 return uptodate;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106}
107
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200108static void ide_floppy_report_error(struct ide_disk_obj *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200109 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110{
Borislav Petkovd652c132008-02-02 19:56:35 +0100111 /* supress error messages resulting from Medium not present */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 if (floppy->sense_key == 0x02 &&
113 floppy->asc == 0x3a &&
114 floppy->ascq == 0x00)
Borislav Petkovd652c132008-02-02 19:56:35 +0100115 return;
116
Borislav Petkov7b355722008-10-13 21:39:35 +0200117 printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, "
Borislav Petkovd652c132008-02-02 19:56:35 +0100118 "asc = %2x, ascq = %2x\n",
119 floppy->drive->name, pc->c[0], floppy->sense_key,
120 floppy->asc, floppy->ascq);
121
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122}
123
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100124static ide_startstop_t ide_floppy_issue_pc(ide_drive_t *drive,
125 struct ide_cmd *cmd,
126 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200128 struct ide_disk_obj *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100130 if (drive->failed_pc == NULL &&
Borislav Petkov30d67092008-02-02 19:56:33 +0100131 pc->c[0] != GPCMD_REQUEST_SENSE)
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100132 drive->failed_pc = pc;
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200133
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 /* Set the current packet command */
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200135 drive->pc = pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136
Borislav Petkov757ced82008-02-02 19:56:37 +0100137 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
Tejun Heoeb6a61b2009-04-19 08:46:02 +0900138 unsigned int done = blk_rq_bytes(drive->hwif->rq);
139
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100140 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
Borislav Petkov757ced82008-02-02 19:56:37 +0100141 ide_floppy_report_error(floppy, pc);
Tejun Heoeb6a61b2009-04-19 08:46:02 +0900142
Borislav Petkov757ced82008-02-02 19:56:37 +0100143 /* Giving up */
Bartlomiej Zolnierkiewiczc152cc12009-03-27 12:46:34 +0100144 pc->error = IDE_DRV_ERROR_GENERAL;
Borislav Petkov757ced82008-02-02 19:56:37 +0100145
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100146 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewiczb14c7212008-10-13 21:39:30 +0200147 drive->pc_callback(drive, 0);
Tejun Heoeb6a61b2009-04-19 08:46:02 +0900148 ide_complete_rq(drive, -EIO, done);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 return ide_stopped;
150 }
151
Borislav Petkov088b1b82009-01-02 13:34:47 +0100152 ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
154 pc->retries++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100156 return ide_issue_pc(drive, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157}
158
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200159void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160{
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200161 ide_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100162 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 pc->c[7] = 255;
164 pc->c[8] = 255;
Borislav Petkov8e555122008-04-18 00:46:27 +0200165 pc->req_xfer = 255;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166}
167
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100168/* A mode sense command is used to "sense" floppy parameters. */
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200169void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170{
Borislav Petkov24a5d702008-02-02 19:56:34 +0100171 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100172
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200173 ide_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100174 pc->c[0] = GPCMD_MODE_SENSE_10;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 pc->c[1] = 0;
Bartlomiej Zolnierkiewicz4de4b9e2008-10-10 22:39:36 +0200176 pc->c[2] = page_code;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
178 switch (page_code) {
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100179 case IDEFLOPPY_CAPABILITIES_PAGE:
180 length += 12;
181 break;
182 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
183 length += 32;
184 break;
185 default:
Borislav Petkov7b355722008-10-13 21:39:35 +0200186 printk(KERN_ERR PFX "unsupported page code in %s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 }
Borislav Petkov8f622432008-02-02 19:56:33 +0100188 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
Borislav Petkov8e555122008-04-18 00:46:27 +0200189 pc->req_xfer = length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190}
191
Borislav Petkov7b355722008-10-13 21:39:35 +0200192static void idefloppy_create_rw_cmd(ide_drive_t *drive,
Borislav Petkov8e555122008-04-18 00:46:27 +0200193 struct ide_atapi_pc *pc, struct request *rq,
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100194 unsigned long sector)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200196 struct ide_disk_obj *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 int block = sector / floppy->bs_factor;
Tejun Heo9780e2d2009-05-07 22:24:40 +0900198 int blocks = blk_rq_sectors(rq) / floppy->bs_factor;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 int cmd = rq_data_dir(rq);
200
Borislav Petkov088b1b82009-01-02 13:34:47 +0100201 ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200203 ide_init_pc(pc);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100204 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
205 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
Borislav Petkov8f622432008-02-02 19:56:33 +0100206 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100207
Borislav Petkov20cd93b2008-07-23 19:56:00 +0200208 memcpy(rq->cmd, pc->c, 12);
209
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 pc->rq = rq;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200211 if (rq->cmd_flags & REQ_RW)
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100212 pc->flags |= PC_FLAG_WRITING;
Borislav Petkov19f52a72009-05-04 09:53:03 +0200213
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200214 pc->flags |= PC_FLAG_DMA_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215}
216
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200217static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200218 struct ide_atapi_pc *pc, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219{
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200220 ide_init_pc(pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 memcpy(pc->c, rq->cmd, sizeof(pc->c));
Jens Axboe3d6392c2007-07-09 12:38:05 +0200222 pc->rq = rq;
Tejun Heo34b7d2c2009-05-07 22:24:43 +0900223 if (blk_rq_bytes(rq)) {
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200224 pc->flags |= PC_FLAG_DMA_OK;
Tejun Heo89689322009-04-19 07:00:42 +0900225 if (rq_data_dir(rq) == WRITE)
226 pc->flags |= PC_FLAG_WRITING;
227 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228}
229
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200230static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
231 struct request *rq, sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200233 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100234 struct ide_cmd cmd;
Borislav Petkov8e555122008-04-18 00:46:27 +0200235 struct ide_atapi_pc *pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
Bartlomiej Zolnierkiewicz349d12a2009-03-31 20:15:26 +0200237 ide_debug_log(IDE_DBG_FUNC, "enter, cmd: 0x%x\n", rq->cmd[0]);
238
Borislav Petkov088b1b82009-01-02 13:34:47 +0100239 if (drive->debug_mask & IDE_DBG_RQ)
240 blk_dump_rq_flags(rq, (rq->rq_disk
241 ? rq->rq_disk->disk_name
242 : "dev?"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
244 if (rq->errors >= ERROR_MAX) {
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100245 if (drive->failed_pc) {
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100246 ide_floppy_report_error(floppy, drive->failed_pc);
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100247 drive->failed_pc = NULL;
248 } else
Borislav Petkov7b355722008-10-13 21:39:35 +0200249 printk(KERN_ERR PFX "%s: I/O error\n", drive->name);
250
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100251 if (blk_special_request(rq)) {
Bartlomiej Zolnierkiewicz6902a532009-03-27 12:46:43 +0100252 rq->errors = 0;
Bartlomiej Zolnierkiewiczf974b192009-03-27 12:46:44 +0100253 ide_complete_rq(drive, 0, blk_rq_bytes(rq));
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100254 return ide_stopped;
255 } else
256 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 }
Jens Axboe4aff5e22006-08-10 08:44:47 +0200258 if (blk_fs_request(rq)) {
Tejun Heo9780e2d2009-05-07 22:24:40 +0900259 if (((long)blk_rq_pos(rq) % floppy->bs_factor) ||
260 (blk_rq_sectors(rq) % floppy->bs_factor)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200261 printk(KERN_ERR PFX "%s: unsupported r/w rq size\n",
262 drive->name);
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100263 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 }
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200265 pc = &floppy->queued_pc;
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200266 idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
Borislav Petkov06875322009-04-19 07:00:42 +0900267 } else if (blk_special_request(rq) || blk_sense_request(rq)) {
Tejun Heoac0b0112009-04-19 07:00:42 +0900268 pc = (struct ide_atapi_pc *)rq->special;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200269 } else if (blk_pc_request(rq)) {
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200270 pc = &floppy->queued_pc;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200271 idefloppy_blockpc_cmd(floppy, pc, rq);
Bartlomiej Zolnierkiewicz2c7eaa42009-06-15 22:16:10 +0200272 } else
273 BUG();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
Borislav Petkov06875322009-04-19 07:00:42 +0900275 ide_prep_sense(drive, rq);
276
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100277 memset(&cmd, 0, sizeof(cmd));
278
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100279 if (rq_data_dir(rq))
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100280 cmd.tf_flags |= IDE_TFLAG_WRITE;
281
282 cmd.rq = rq;
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100283
Borislav Petkovdfb7e622009-05-01 20:35:21 +0200284 if (blk_fs_request(rq) || blk_rq_bytes(rq)) {
285 ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100286 ide_map_sg(drive, &cmd);
Borislav Petkov3eb76c12009-03-13 21:16:12 +0100287 }
Borislav Petkovb98b3402008-10-10 22:39:35 +0200288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 pc->rq = rq;
Bartlomiej Zolnierkiewicz5d418932008-07-15 21:21:57 +0200290
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100291 return ide_floppy_issue_pc(drive, &cmd, pc);
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100292out_end:
293 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewicz89f78b32009-03-27 12:46:43 +0100294 if (blk_fs_request(rq) == 0 && rq->errors == 0)
295 rq->errors = -EIO;
Bartlomiej Zolnierkiewicz5e955242009-06-23 11:27:27 +0000296 ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100297 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298}
299
300/*
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100301 * Look at the flexible disk page parameters. We ignore the CHS capacity
302 * parameters and use the LBA parameters instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 */
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100304static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive,
305 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200307 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +0200308 struct gendisk *disk = floppy->disk;
Borislav Petkovd9a68302009-05-02 10:43:11 +0200309 u8 *page, buf[40];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310 int capacity, lba_capacity;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100311 u16 transfer_rate, sector_size, cyls, rpm;
312 u8 heads, sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100314 ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100315
Borislav Petkovd9a68302009-05-02 10:43:11 +0200316 if (ide_queue_pc_tail(drive, disk, pc, buf, pc->req_xfer)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200317 printk(KERN_ERR PFX "Can't get flexible disk page params\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 return 1;
319 }
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200320
Borislav Petkovd9a68302009-05-02 10:43:11 +0200321 if (buf[3] & 0x80)
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200322 drive->dev_flags |= IDE_DFLAG_WP;
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200323 else
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200324 drive->dev_flags &= ~IDE_DFLAG_WP;
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200325
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200326 set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP));
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200327
Borislav Petkovd9a68302009-05-02 10:43:11 +0200328 page = &buf[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329
Borislav Petkovd9a68302009-05-02 10:43:11 +0200330 transfer_rate = be16_to_cpup((__be16 *)&buf[8 + 2]);
331 sector_size = be16_to_cpup((__be16 *)&buf[8 + 6]);
332 cyls = be16_to_cpup((__be16 *)&buf[8 + 8]);
333 rpm = be16_to_cpup((__be16 *)&buf[8 + 28]);
334 heads = buf[8 + 4];
335 sectors = buf[8 + 5];
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100336
337 capacity = cyls * heads * sectors * sector_size;
338
339 if (memcmp(page, &floppy->flexible_disk_page, 32))
Borislav Petkov7b355722008-10-13 21:39:35 +0200340 printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 "%d sector size, %d rpm\n",
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100342 drive->name, capacity / 1024, cyls, heads,
343 sectors, transfer_rate / 8, sector_size, rpm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100345 memcpy(&floppy->flexible_disk_page, page, 32);
346 drive->bios_cyl = cyls;
347 drive->bios_head = heads;
348 drive->bios_sect = sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 lba_capacity = floppy->blocks * floppy->block_size;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100350
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 if (capacity < lba_capacity) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200352 printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 "bytes, but the drive only handles %d\n",
354 drive->name, lba_capacity, capacity);
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100355 floppy->blocks = floppy->block_size ?
356 capacity / floppy->block_size : 0;
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200357 drive->capacity64 = floppy->blocks * floppy->bs_factor;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 }
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200359
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 return 0;
361}
362
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363/*
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100364 * Determine if a media is present in the floppy drive, and if so, its LBA
365 * capacity.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 */
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200367static int ide_floppy_get_capacity(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200369 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +0200370 struct gendisk *disk = floppy->disk;
Borislav Petkov8e555122008-04-18 00:46:27 +0200371 struct ide_atapi_pc pc;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100372 u8 *cap_desc;
Bartlomiej Zolnierkiewicz41fa9f82009-03-31 20:15:25 +0200373 u8 pc_buf[256], header_len, desc_cnt;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100374 int i, rc = 1, blocks, length;
375
Bartlomiej Zolnierkiewicz349d12a2009-03-31 20:15:26 +0200376 ide_debug_log(IDE_DBG_FUNC, "enter");
377
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 drive->bios_cyl = 0;
379 drive->bios_head = drive->bios_sect = 0;
Alan Coxfdb77da2007-02-17 02:40:20 +0100380 floppy->blocks = 0;
381 floppy->bs_factor = 1;
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200382 drive->capacity64 = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200384 ide_floppy_create_read_capacity_cmd(&pc);
Borislav Petkovb13345f2009-05-02 10:26:12 +0200385 if (ide_queue_pc_tail(drive, disk, &pc, pc_buf, pc.req_xfer)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200386 printk(KERN_ERR PFX "Can't get floppy parameters\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 return 1;
388 }
Borislav Petkovb13345f2009-05-02 10:26:12 +0200389 header_len = pc_buf[3];
390 cap_desc = &pc_buf[4];
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100391 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100393 for (i = 0; i < desc_cnt; i++) {
394 unsigned int desc_start = 4 + i*8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
Borislav Petkovb13345f2009-05-02 10:26:12 +0200396 blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
397 length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100398
Borislav Petkov7b355722008-10-13 21:39:35 +0200399 ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, "
Borislav Petkov088b1b82009-01-02 13:34:47 +0100400 "%d sector size",
401 i, blocks * length / 1024,
402 blocks, length);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100403
404 if (i)
405 continue;
406 /*
407 * the code below is valid only for the 1st descriptor, ie i=0
408 */
409
Borislav Petkovb13345f2009-05-02 10:26:12 +0200410 switch (pc_buf[desc_start + 4] & 0x03) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 /* Clik! drive returns this instead of CAPACITY_CURRENT */
412 case CAPACITY_UNFORMATTED:
Borislav Petkovea68d272008-07-23 19:56:01 +0200413 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100414 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 * If it is not a clik drive, break out
416 * (maintains previous driver behaviour)
417 */
418 break;
419 case CAPACITY_CURRENT:
420 /* Normal Zip/LS-120 disks */
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100421 if (memcmp(cap_desc, &floppy->cap_desc, 8))
Borislav Petkov7b355722008-10-13 21:39:35 +0200422 printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d "
423 "sector size\n",
424 drive->name, blocks * length / 1024,
425 blocks, length);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100426 memcpy(&floppy->cap_desc, cap_desc, 8);
427
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 if (!length || length % 512) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200429 printk(KERN_NOTICE PFX "%s: %d bytes block size"
430 " not supported\n", drive->name, length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 } else {
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100432 floppy->blocks = blocks;
433 floppy->block_size = length;
434 floppy->bs_factor = length / 512;
435 if (floppy->bs_factor != 1)
Borislav Petkov7b355722008-10-13 21:39:35 +0200436 printk(KERN_NOTICE PFX "%s: Warning: "
437 "non 512 bytes block size not "
438 "fully supported\n",
439 drive->name);
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200440 drive->capacity64 =
441 floppy->blocks * floppy->bs_factor;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100442 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 }
444 break;
445 case CAPACITY_NO_CARTRIDGE:
446 /*
447 * This is a KERN_ERR so it appears on screen
448 * for the user to see
449 */
Borislav Petkov7b355722008-10-13 21:39:35 +0200450 printk(KERN_ERR PFX "%s: No disk in drive\n",
451 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 break;
453 case CAPACITY_INVALID:
Borislav Petkov7b355722008-10-13 21:39:35 +0200454 printk(KERN_ERR PFX "%s: Invalid capacity for disk "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 "in drive\n", drive->name);
456 break;
457 }
Borislav Petkov088b1b82009-01-02 13:34:47 +0100458 ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d",
Borislav Petkovb13345f2009-05-02 10:26:12 +0200459 pc_buf[desc_start + 4] & 0x03);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 }
461
462 /* Clik! disk does not support get_flexible_disk_page */
Borislav Petkovea68d272008-07-23 19:56:01 +0200463 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100464 (void) ide_floppy_get_flexible_disk_page(drive, &pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 return rc;
467}
468
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200469static void ide_floppy_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470{
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200471 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200472 u16 *id = drive->id;
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200473
Bartlomiej Zolnierkiewicz85e39032008-10-13 21:39:32 +0200474 drive->pc_callback = ide_floppy_callback;
Borislav Petkov3ad67762008-04-18 00:46:25 +0200475
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100477 * We used to check revisions here. At this point however I'm giving up.
478 * Just assume they are all broken, its easier.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 *
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100480 * The actual reason for the workarounds was likely a driver bug after
481 * all rather than a firmware bug, and the workaround below used to hide
482 * it. It should be fixed as of version 1.9, but to be on the safe side
483 * we'll leave the limitation below for the 2.2.x tree.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200485 if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) {
Borislav Petkovea68d272008-07-23 19:56:01 +0200486 drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 /* This value will be visible in the /proc/ide/hdx/settings */
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +0200488 drive->pc_delay = IDEFLOPPY_PC_DELAY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 blk_queue_max_sectors(drive->queue, 64);
490 }
491
492 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100493 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
494 * nasty clicking noises without it, so please don't remove this.
495 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200496 if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 blk_queue_max_sectors(drive->queue, 64);
Borislav Petkovea68d272008-07-23 19:56:01 +0200498 drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +0200499 /* IOMEGA Clik! drives do not support lock/unlock commands */
Bartlomiej Zolnierkiewicz42619d32008-10-17 18:09:11 +0200500 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 }
502
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100503 (void) ide_floppy_get_capacity(drive);
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +0200504
505 ide_proc_register_driver(drive, floppy->driver);
Bartlomiej Zolnierkiewiczae9f9f02008-10-17 18:09:10 +0200506
507 drive->dev_flags |= IDE_DFLAG_ATTACH;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508}
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200509
510static void ide_floppy_flush(ide_drive_t *drive)
511{
512}
513
514static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk)
515{
516 int ret = 0;
517
518 if (ide_do_test_unit_ready(drive, disk))
519 ide_do_start_stop(drive, disk, 1);
520
521 ret = ide_floppy_get_capacity(drive);
522
523 set_capacity(disk, ide_gd_capacity(drive));
524
525 return ret;
526}
527
528const struct ide_disk_ops ide_atapi_disk_ops = {
529 .check = ide_check_atapi_device,
530 .get_capacity = ide_floppy_get_capacity,
531 .setup = ide_floppy_setup,
532 .flush = ide_floppy_flush,
533 .init_media = ide_floppy_init_media,
534 .set_doorlock = ide_set_media_lock,
535 .do_request = ide_floppy_do_request,
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200536 .ioctl = ide_floppy_ioctl,
537};