blob: 3d42043fec51ee1bf86d204912da85b57242f1e5 [file] [log] [blame]
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include <linux/cdrom.h>
29#include <linux/ide.h>
Bartlomiej Zolnierkiewicz3ceca722008-10-10 22:39:27 +020030#include <linux/hdreg.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/bitops.h>
Arjan van de Vencf8b8972006-03-23 03:00:45 -080032#include <linux/mutex.h>
Borislav Petkovb98b3402008-10-10 22:39:35 +020033#include <linux/scatterlist.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
Bartlomiej Zolnierkiewicz89636af2007-07-20 01:11:59 +020035#include <scsi/scsi_ioctl.h>
36
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#include <asm/byteorder.h>
Borislav Petkov7e8b1632008-02-02 19:56:34 +010038#include <linux/uaccess.h>
39#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#include <asm/unaligned.h>
41
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +020042#include "ide-floppy.h"
43
Linus Torvalds1da177e2005-04-16 15:20:36 -070044/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +010045 * After each failed packet command we issue a request sense command and retry
46 * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 */
48#define IDEFLOPPY_MAX_PC_RETRIES 3
49
Borislav Petkov194ec0c2008-02-02 19:56:35 +010050/* format capacities descriptor codes */
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#define CAPACITY_INVALID 0x00
52#define CAPACITY_UNFORMATTED 0x01
53#define CAPACITY_CURRENT 0x02
54#define CAPACITY_NO_CARTRIDGE 0x03
55
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +020056/*
57 * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit
58 * was apparently being deasserted before the unit was ready to receive data.
59 */
60#define IDEFLOPPY_PC_DELAY (HZ/20) /* default delay for ZIP 100 (50ms) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
Bartlomiej Zolnierkiewicz03a2faa2009-03-27 12:46:36 +010062static int ide_floppy_callback(ide_drive_t *drive, int dsc)
Linus Torvalds1da177e2005-04-16 15:20:36 -070063{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +020064 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +020065 struct ide_atapi_pc *pc = drive->pc;
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +010066 struct request *rq = pc->rq;
Borislav Petkov81f49382008-07-15 21:21:56 +020067 int uptodate = pc->error ? 0 : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -070068
Borislav Petkov088b1b82009-01-02 13:34:47 +010069 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovbcc77d92008-02-02 19:56:34 +010070
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010071 if (drive->failed_pc == pc)
72 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewiczdd2e9a02008-07-15 21:22:01 +020073
Borislav Petkov81f49382008-07-15 21:21:56 +020074 if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
Jiri Slabyf17bfe72010-11-22 11:39:30 -080075 rq->cmd_type == REQ_TYPE_BLOCK_PC)
Borislav Petkov81f49382008-07-15 21:21:56 +020076 uptodate = 1; /* FIXME */
77 else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
Borislav Petkovae3a8382009-05-02 10:58:17 +020078
79 u8 *buf = bio_data(rq->bio);
Borislav Petkova6ff2d32008-02-02 19:56:34 +010080
Borislav Petkov81f49382008-07-15 21:21:56 +020081 if (!pc->error) {
82 floppy->sense_key = buf[2] & 0x0F;
83 floppy->asc = buf[12];
84 floppy->ascq = buf[13];
85 floppy->progress_indication = buf[15] & 0x80 ?
86 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
87
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010088 if (drive->failed_pc)
Borislav Petkov088b1b82009-01-02 13:34:47 +010089 ide_debug_log(IDE_DBG_PC, "pc = %x",
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010090 drive->failed_pc->c[0]);
Borislav Petkov81f49382008-07-15 21:21:56 +020091
Borislav Petkov7b355722008-10-13 21:39:35 +020092 ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x,"
Borislav Petkov088b1b82009-01-02 13:34:47 +010093 "ascq = %x", floppy->sense_key,
Borislav Petkov7b355722008-10-13 21:39:35 +020094 floppy->asc, floppy->ascq);
Borislav Petkov81f49382008-07-15 21:21:56 +020095 } else
Borislav Petkov7b355722008-10-13 21:39:35 +020096 printk(KERN_ERR PFX "Error in REQUEST SENSE itself - "
97 "Aborting request!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200100 if (rq->cmd_type == REQ_TYPE_SPECIAL)
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100101 rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL;
Bartlomiej Zolnierkiewicz03a2faa2009-03-27 12:46:36 +0100102
103 return uptodate;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104}
105
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200106static void ide_floppy_report_error(struct ide_disk_obj *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200107 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108{
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300109 /* suppress error messages resulting from Medium not present */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 if (floppy->sense_key == 0x02 &&
111 floppy->asc == 0x3a &&
112 floppy->ascq == 0x00)
Borislav Petkovd652c132008-02-02 19:56:35 +0100113 return;
114
Borislav Petkov7b355722008-10-13 21:39:35 +0200115 printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, "
Borislav Petkovd652c132008-02-02 19:56:35 +0100116 "asc = %2x, ascq = %2x\n",
117 floppy->drive->name, pc->c[0], floppy->sense_key,
118 floppy->asc, floppy->ascq);
119
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120}
121
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100122static ide_startstop_t ide_floppy_issue_pc(ide_drive_t *drive,
123 struct ide_cmd *cmd,
124 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200126 struct ide_disk_obj *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100128 if (drive->failed_pc == NULL &&
Borislav Petkov30d67092008-02-02 19:56:33 +0100129 pc->c[0] != GPCMD_REQUEST_SENSE)
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100130 drive->failed_pc = pc;
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200131
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 /* Set the current packet command */
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200133 drive->pc = pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
Borislav Petkov757ced82008-02-02 19:56:37 +0100135 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
Tejun Heoeb6a61b2009-04-19 08:46:02 +0900136 unsigned int done = blk_rq_bytes(drive->hwif->rq);
137
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100138 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
Borislav Petkov757ced82008-02-02 19:56:37 +0100139 ide_floppy_report_error(floppy, pc);
Tejun Heoeb6a61b2009-04-19 08:46:02 +0900140
Borislav Petkov757ced82008-02-02 19:56:37 +0100141 /* Giving up */
Bartlomiej Zolnierkiewiczc152cc12009-03-27 12:46:34 +0100142 pc->error = IDE_DRV_ERROR_GENERAL;
Borislav Petkov757ced82008-02-02 19:56:37 +0100143
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100144 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewiczb14c7212008-10-13 21:39:30 +0200145 drive->pc_callback(drive, 0);
Tejun Heoeb6a61b2009-04-19 08:46:02 +0900146 ide_complete_rq(drive, -EIO, done);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 return ide_stopped;
148 }
149
Borislav Petkov088b1b82009-01-02 13:34:47 +0100150 ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
152 pc->retries++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100154 return ide_issue_pc(drive, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155}
156
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200157void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158{
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200159 ide_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100160 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 pc->c[7] = 255;
162 pc->c[8] = 255;
Borislav Petkov8e555122008-04-18 00:46:27 +0200163 pc->req_xfer = 255;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164}
165
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100166/* A mode sense command is used to "sense" floppy parameters. */
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200167void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168{
Borislav Petkov24a5d702008-02-02 19:56:34 +0100169 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100170
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200171 ide_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100172 pc->c[0] = GPCMD_MODE_SENSE_10;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 pc->c[1] = 0;
Bartlomiej Zolnierkiewicz4de4b9e2008-10-10 22:39:36 +0200174 pc->c[2] = page_code;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175
176 switch (page_code) {
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100177 case IDEFLOPPY_CAPABILITIES_PAGE:
178 length += 12;
179 break;
180 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
181 length += 32;
182 break;
183 default:
Borislav Petkov7b355722008-10-13 21:39:35 +0200184 printk(KERN_ERR PFX "unsupported page code in %s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 }
Borislav Petkov8f622432008-02-02 19:56:33 +0100186 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
Borislav Petkov8e555122008-04-18 00:46:27 +0200187 pc->req_xfer = length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188}
189
Borislav Petkov7b355722008-10-13 21:39:35 +0200190static void idefloppy_create_rw_cmd(ide_drive_t *drive,
Borislav Petkov8e555122008-04-18 00:46:27 +0200191 struct ide_atapi_pc *pc, struct request *rq,
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100192 unsigned long sector)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200194 struct ide_disk_obj *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 int block = sector / floppy->bs_factor;
Tejun Heo9780e2d2009-05-07 22:24:40 +0900196 int blocks = blk_rq_sectors(rq) / floppy->bs_factor;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 int cmd = rq_data_dir(rq);
198
Borislav Petkov088b1b82009-01-02 13:34:47 +0100199 ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200201 ide_init_pc(pc);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100202 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
203 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
Borislav Petkov8f622432008-02-02 19:56:33 +0100204 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100205
Borislav Petkov20cd93be2008-07-23 19:56:00 +0200206 memcpy(rq->cmd, pc->c, 12);
207
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 pc->rq = rq;
Christoph Hellwig7b6d91d2010-08-07 18:20:39 +0200209 if (rq->cmd_flags & REQ_WRITE)
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100210 pc->flags |= PC_FLAG_WRITING;
Borislav Petkov19f52a72009-05-04 09:53:03 +0200211
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200212 pc->flags |= PC_FLAG_DMA_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213}
214
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200215static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200216 struct ide_atapi_pc *pc, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217{
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200218 ide_init_pc(pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 memcpy(pc->c, rq->cmd, sizeof(pc->c));
Jens Axboe3d6392c2007-07-09 12:38:05 +0200220 pc->rq = rq;
Tejun Heo34b7d2c2009-05-07 22:24:43 +0900221 if (blk_rq_bytes(rq)) {
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200222 pc->flags |= PC_FLAG_DMA_OK;
Tejun Heo89689322009-04-19 07:00:42 +0900223 if (rq_data_dir(rq) == WRITE)
224 pc->flags |= PC_FLAG_WRITING;
225 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226}
227
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200228static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
229 struct request *rq, sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200231 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100232 struct ide_cmd cmd;
Borislav Petkov8e555122008-04-18 00:46:27 +0200233 struct ide_atapi_pc *pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234
Bartlomiej Zolnierkiewicz349d12a2009-03-31 20:15:26 +0200235 ide_debug_log(IDE_DBG_FUNC, "enter, cmd: 0x%x\n", rq->cmd[0]);
236
Borislav Petkov088b1b82009-01-02 13:34:47 +0100237 if (drive->debug_mask & IDE_DBG_RQ)
238 blk_dump_rq_flags(rq, (rq->rq_disk
239 ? rq->rq_disk->disk_name
240 : "dev?"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
242 if (rq->errors >= ERROR_MAX) {
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100243 if (drive->failed_pc) {
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100244 ide_floppy_report_error(floppy, drive->failed_pc);
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100245 drive->failed_pc = NULL;
246 } else
Borislav Petkov7b355722008-10-13 21:39:35 +0200247 printk(KERN_ERR PFX "%s: I/O error\n", drive->name);
248
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200249 if (rq->cmd_type == REQ_TYPE_SPECIAL) {
Bartlomiej Zolnierkiewicz6902a532009-03-27 12:46:43 +0100250 rq->errors = 0;
Bartlomiej Zolnierkiewiczf974b192009-03-27 12:46:44 +0100251 ide_complete_rq(drive, 0, blk_rq_bytes(rq));
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100252 return ide_stopped;
253 } else
254 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 }
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200256
257 switch (rq->cmd_type) {
258 case REQ_TYPE_FS:
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);
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200267 break;
268 case REQ_TYPE_SPECIAL:
269 case REQ_TYPE_SENSE:
Tejun Heoac0b0112009-04-19 07:00:42 +0900270 pc = (struct ide_atapi_pc *)rq->special;
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200271 break;
272 case REQ_TYPE_BLOCK_PC:
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200273 pc = &floppy->queued_pc;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200274 idefloppy_blockpc_cmd(floppy, pc, rq);
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200275 break;
276 default:
Bartlomiej Zolnierkiewicz2c7eaa42009-06-15 22:16:10 +0200277 BUG();
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200278 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
Borislav Petkov06875322009-04-19 07:00:42 +0900280 ide_prep_sense(drive, rq);
281
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100282 memset(&cmd, 0, sizeof(cmd));
283
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100284 if (rq_data_dir(rq))
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100285 cmd.tf_flags |= IDE_TFLAG_WRITE;
286
287 cmd.rq = rq;
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100288
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200289 if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) {
Borislav Petkovdfb7e622009-05-01 20:35:21 +0200290 ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100291 ide_map_sg(drive, &cmd);
Borislav Petkov3eb76c12009-03-13 21:16:12 +0100292 }
Borislav Petkovb98b3402008-10-10 22:39:35 +0200293
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 pc->rq = rq;
Bartlomiej Zolnierkiewicz5d418932008-07-15 21:21:57 +0200295
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100296 return ide_floppy_issue_pc(drive, &cmd, pc);
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100297out_end:
298 drive->failed_pc = NULL;
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200299 if (rq->cmd_type != REQ_TYPE_FS && rq->errors == 0)
Bartlomiej Zolnierkiewicz89f78b322009-03-27 12:46:43 +0100300 rq->errors = -EIO;
Bartlomiej Zolnierkiewicz5e955242009-06-23 11:27:27 +0000301 ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100302 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303}
304
305/*
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100306 * Look at the flexible disk page parameters. We ignore the CHS capacity
307 * parameters and use the LBA parameters instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 */
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100309static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive,
310 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200312 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +0200313 struct gendisk *disk = floppy->disk;
Borislav Petkovd9a68302009-05-02 10:43:11 +0200314 u8 *page, buf[40];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 int capacity, lba_capacity;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100316 u16 transfer_rate, sector_size, cyls, rpm;
317 u8 heads, sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100319 ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100320
Borislav Petkovd9a68302009-05-02 10:43:11 +0200321 if (ide_queue_pc_tail(drive, disk, pc, buf, pc->req_xfer)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200322 printk(KERN_ERR PFX "Can't get flexible disk page params\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 return 1;
324 }
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200325
Borislav Petkovd9a68302009-05-02 10:43:11 +0200326 if (buf[3] & 0x80)
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200327 drive->dev_flags |= IDE_DFLAG_WP;
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200328 else
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200329 drive->dev_flags &= ~IDE_DFLAG_WP;
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200330
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200331 set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP));
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200332
Borislav Petkovd9a68302009-05-02 10:43:11 +0200333 page = &buf[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334
Borislav Petkovd9a68302009-05-02 10:43:11 +0200335 transfer_rate = be16_to_cpup((__be16 *)&buf[8 + 2]);
336 sector_size = be16_to_cpup((__be16 *)&buf[8 + 6]);
337 cyls = be16_to_cpup((__be16 *)&buf[8 + 8]);
338 rpm = be16_to_cpup((__be16 *)&buf[8 + 28]);
339 heads = buf[8 + 4];
340 sectors = buf[8 + 5];
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100341
342 capacity = cyls * heads * sectors * sector_size;
343
344 if (memcmp(page, &floppy->flexible_disk_page, 32))
Borislav Petkov7b355722008-10-13 21:39:35 +0200345 printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 "%d sector size, %d rpm\n",
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100347 drive->name, capacity / 1024, cyls, heads,
348 sectors, transfer_rate / 8, sector_size, rpm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100350 memcpy(&floppy->flexible_disk_page, page, 32);
351 drive->bios_cyl = cyls;
352 drive->bios_head = heads;
353 drive->bios_sect = sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 lba_capacity = floppy->blocks * floppy->block_size;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100355
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 if (capacity < lba_capacity) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200357 printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 "bytes, but the drive only handles %d\n",
359 drive->name, lba_capacity, capacity);
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100360 floppy->blocks = floppy->block_size ?
361 capacity / floppy->block_size : 0;
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200362 drive->capacity64 = floppy->blocks * floppy->bs_factor;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 }
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200364
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 return 0;
366}
367
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368/*
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100369 * Determine if a media is present in the floppy drive, and if so, its LBA
370 * capacity.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 */
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200372static int ide_floppy_get_capacity(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200374 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +0200375 struct gendisk *disk = floppy->disk;
Borislav Petkov8e555122008-04-18 00:46:27 +0200376 struct ide_atapi_pc pc;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100377 u8 *cap_desc;
Bartlomiej Zolnierkiewicz41fa9f82009-03-31 20:15:25 +0200378 u8 pc_buf[256], header_len, desc_cnt;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100379 int i, rc = 1, blocks, length;
380
Bartlomiej Zolnierkiewicz349d12a2009-03-31 20:15:26 +0200381 ide_debug_log(IDE_DBG_FUNC, "enter");
382
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 drive->bios_cyl = 0;
384 drive->bios_head = drive->bios_sect = 0;
Alan Coxfdb77da2007-02-17 02:40:20 +0100385 floppy->blocks = 0;
386 floppy->bs_factor = 1;
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200387 drive->capacity64 = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200389 ide_floppy_create_read_capacity_cmd(&pc);
Borislav Petkovb13345f2009-05-02 10:26:12 +0200390 if (ide_queue_pc_tail(drive, disk, &pc, pc_buf, pc.req_xfer)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200391 printk(KERN_ERR PFX "Can't get floppy parameters\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 return 1;
393 }
Borislav Petkovb13345f2009-05-02 10:26:12 +0200394 header_len = pc_buf[3];
395 cap_desc = &pc_buf[4];
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100396 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100398 for (i = 0; i < desc_cnt; i++) {
399 unsigned int desc_start = 4 + i*8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400
Borislav Petkovb13345f2009-05-02 10:26:12 +0200401 blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
402 length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100403
Borislav Petkov7b355722008-10-13 21:39:35 +0200404 ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, "
Borislav Petkov088b1b82009-01-02 13:34:47 +0100405 "%d sector size",
406 i, blocks * length / 1024,
407 blocks, length);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100408
409 if (i)
410 continue;
411 /*
412 * the code below is valid only for the 1st descriptor, ie i=0
413 */
414
Borislav Petkovb13345f2009-05-02 10:26:12 +0200415 switch (pc_buf[desc_start + 4] & 0x03) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 /* Clik! drive returns this instead of CAPACITY_CURRENT */
417 case CAPACITY_UNFORMATTED:
Borislav Petkovea68d272008-07-23 19:56:01 +0200418 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100419 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 * If it is not a clik drive, break out
421 * (maintains previous driver behaviour)
422 */
423 break;
424 case CAPACITY_CURRENT:
425 /* Normal Zip/LS-120 disks */
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100426 if (memcmp(cap_desc, &floppy->cap_desc, 8))
Borislav Petkov7b355722008-10-13 21:39:35 +0200427 printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d "
428 "sector size\n",
429 drive->name, blocks * length / 1024,
430 blocks, length);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100431 memcpy(&floppy->cap_desc, cap_desc, 8);
432
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 if (!length || length % 512) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200434 printk(KERN_NOTICE PFX "%s: %d bytes block size"
435 " not supported\n", drive->name, length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 } else {
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100437 floppy->blocks = blocks;
438 floppy->block_size = length;
439 floppy->bs_factor = length / 512;
440 if (floppy->bs_factor != 1)
Borislav Petkov7b355722008-10-13 21:39:35 +0200441 printk(KERN_NOTICE PFX "%s: Warning: "
442 "non 512 bytes block size not "
443 "fully supported\n",
444 drive->name);
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200445 drive->capacity64 =
446 floppy->blocks * floppy->bs_factor;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100447 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 }
449 break;
450 case CAPACITY_NO_CARTRIDGE:
451 /*
452 * This is a KERN_ERR so it appears on screen
453 * for the user to see
454 */
Borislav Petkov7b355722008-10-13 21:39:35 +0200455 printk(KERN_ERR PFX "%s: No disk in drive\n",
456 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 break;
458 case CAPACITY_INVALID:
Borislav Petkov7b355722008-10-13 21:39:35 +0200459 printk(KERN_ERR PFX "%s: Invalid capacity for disk "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 "in drive\n", drive->name);
461 break;
462 }
Borislav Petkov088b1b82009-01-02 13:34:47 +0100463 ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d",
Borislav Petkovb13345f2009-05-02 10:26:12 +0200464 pc_buf[desc_start + 4] & 0x03);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 }
466
467 /* Clik! disk does not support get_flexible_disk_page */
Borislav Petkovea68d272008-07-23 19:56:01 +0200468 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100469 (void) ide_floppy_get_flexible_disk_page(drive, &pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 return rc;
472}
473
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200474static void ide_floppy_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475{
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200476 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200477 u16 *id = drive->id;
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200478
Bartlomiej Zolnierkiewicz85e39032008-10-13 21:39:32 +0200479 drive->pc_callback = ide_floppy_callback;
Borislav Petkov3ad67762008-04-18 00:46:25 +0200480
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100482 * We used to check revisions here. At this point however I'm giving up.
483 * Just assume they are all broken, its easier.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 *
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100485 * The actual reason for the workarounds was likely a driver bug after
486 * all rather than a firmware bug, and the workaround below used to hide
487 * it. It should be fixed as of version 1.9, but to be on the safe side
488 * we'll leave the limitation below for the 2.2.x tree.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200490 if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) {
Borislav Petkovea68d272008-07-23 19:56:01 +0200491 drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 /* This value will be visible in the /proc/ide/hdx/settings */
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +0200493 drive->pc_delay = IDEFLOPPY_PC_DELAY;
Martin K. Petersen086fa5f2010-02-26 00:20:38 -0500494 blk_queue_max_hw_sectors(drive->queue, 64);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 }
496
497 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100498 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
499 * nasty clicking noises without it, so please don't remove this.
500 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200501 if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) {
Martin K. Petersen086fa5f2010-02-26 00:20:38 -0500502 blk_queue_max_hw_sectors(drive->queue, 64);
Borislav Petkovea68d272008-07-23 19:56:01 +0200503 drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +0200504 /* IOMEGA Clik! drives do not support lock/unlock commands */
Bartlomiej Zolnierkiewicz42619d32008-10-17 18:09:11 +0200505 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 }
507
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100508 (void) ide_floppy_get_capacity(drive);
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +0200509
510 ide_proc_register_driver(drive, floppy->driver);
Bartlomiej Zolnierkiewiczae9f9f02008-10-17 18:09:10 +0200511
512 drive->dev_flags |= IDE_DFLAG_ATTACH;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513}
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200514
515static void ide_floppy_flush(ide_drive_t *drive)
516{
517}
518
519static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk)
520{
521 int ret = 0;
522
523 if (ide_do_test_unit_ready(drive, disk))
524 ide_do_start_stop(drive, disk, 1);
525
526 ret = ide_floppy_get_capacity(drive);
527
528 set_capacity(disk, ide_gd_capacity(drive));
529
530 return ret;
531}
532
533const struct ide_disk_ops ide_atapi_disk_ops = {
534 .check = ide_check_atapi_device,
535 .get_capacity = ide_floppy_get_capacity,
536 .setup = ide_floppy_setup,
537 .flush = ide_floppy_flush,
538 .init_media = ide_floppy_init_media,
539 .set_doorlock = ide_set_media_lock,
540 .do_request = ide_floppy_do_request,
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200541 .ioctl = ide_floppy_ioctl,
542};