blob: 5406b6ea3ad1d2118996a405da5b33ac1359e4ad [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/irq.h>
39#include <linux/uaccess.h>
40#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#include <asm/unaligned.h>
42
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +020043#include "ide-floppy.h"
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +010046 * After each failed packet command we issue a request sense command and retry
47 * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 */
49#define IDEFLOPPY_MAX_PC_RETRIES 3
50
Borislav Petkov194ec0c2008-02-02 19:56:35 +010051/* format capacities descriptor codes */
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#define CAPACITY_INVALID 0x00
53#define CAPACITY_UNFORMATTED 0x01
54#define CAPACITY_CURRENT 0x02
55#define CAPACITY_NO_CARTRIDGE 0x03
56
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +020057/*
58 * The following delay solves a problem with ATAPI Zip 100 drive where BSY bit
59 * was apparently being deasserted before the unit was ready to receive data.
60 */
61#define IDEFLOPPY_PC_DELAY (HZ/20) /* default delay for ZIP 100 (50ms) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
Bartlomiej Zolnierkiewicz03a2faa2009-03-27 12:46:36 +010063static int ide_floppy_callback(ide_drive_t *drive, int dsc)
Linus Torvalds1da177e2005-04-16 15:20:36 -070064{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +020065 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +020066 struct ide_atapi_pc *pc = drive->pc;
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +010067 struct request *rq = pc->rq;
Borislav Petkov81f49382008-07-15 21:21:56 +020068 int uptodate = pc->error ? 0 : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Borislav Petkov088b1b82009-01-02 13:34:47 +010070 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovbcc77d92008-02-02 19:56:34 +010071
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010072 if (drive->failed_pc == pc)
73 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewiczdd2e9a02008-07-15 21:22:01 +020074
Borislav Petkov81f49382008-07-15 21:21:56 +020075 if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
Christoph Hellwig33659eb2010-08-07 18:17:56 +020076 (rq && rq->cmd_type == REQ_TYPE_BLOCK_PC))
Borislav Petkov81f49382008-07-15 21:21:56 +020077 uptodate = 1; /* FIXME */
78 else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
Borislav Petkovae3a8382009-05-02 10:58:17 +020079
80 u8 *buf = bio_data(rq->bio);
Borislav Petkova6ff2d32008-02-02 19:56:34 +010081
Borislav Petkov81f49382008-07-15 21:21:56 +020082 if (!pc->error) {
83 floppy->sense_key = buf[2] & 0x0F;
84 floppy->asc = buf[12];
85 floppy->ascq = buf[13];
86 floppy->progress_indication = buf[15] & 0x80 ?
87 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
88
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010089 if (drive->failed_pc)
Borislav Petkov088b1b82009-01-02 13:34:47 +010090 ide_debug_log(IDE_DBG_PC, "pc = %x",
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010091 drive->failed_pc->c[0]);
Borislav Petkov81f49382008-07-15 21:21:56 +020092
Borislav Petkov7b355722008-10-13 21:39:35 +020093 ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x,"
Borislav Petkov088b1b82009-01-02 13:34:47 +010094 "ascq = %x", floppy->sense_key,
Borislav Petkov7b355722008-10-13 21:39:35 +020095 floppy->asc, floppy->ascq);
Borislav Petkov81f49382008-07-15 21:21:56 +020096 } else
Borislav Petkov7b355722008-10-13 21:39:35 +020097 printk(KERN_ERR PFX "Error in REQUEST SENSE itself - "
98 "Aborting request!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200101 if (rq->cmd_type == REQ_TYPE_SPECIAL)
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100102 rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL;
Bartlomiej Zolnierkiewicz03a2faa2009-03-27 12:46:36 +0100103
104 return uptodate;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105}
106
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200107static void ide_floppy_report_error(struct ide_disk_obj *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200108 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109{
Borislav Petkovd652c132008-02-02 19:56:35 +0100110 /* supress error messages resulting from Medium not present */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 if (floppy->sense_key == 0x02 &&
112 floppy->asc == 0x3a &&
113 floppy->ascq == 0x00)
Borislav Petkovd652c132008-02-02 19:56:35 +0100114 return;
115
Borislav Petkov7b355722008-10-13 21:39:35 +0200116 printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, "
Borislav Petkovd652c132008-02-02 19:56:35 +0100117 "asc = %2x, ascq = %2x\n",
118 floppy->drive->name, pc->c[0], floppy->sense_key,
119 floppy->asc, floppy->ascq);
120
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121}
122
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100123static ide_startstop_t ide_floppy_issue_pc(ide_drive_t *drive,
124 struct ide_cmd *cmd,
125 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200127 struct ide_disk_obj *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100129 if (drive->failed_pc == NULL &&
Borislav Petkov30d67092008-02-02 19:56:33 +0100130 pc->c[0] != GPCMD_REQUEST_SENSE)
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100131 drive->failed_pc = pc;
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200132
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 /* Set the current packet command */
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200134 drive->pc = pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
Borislav Petkov757ced82008-02-02 19:56:37 +0100136 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
Tejun Heoeb6a61b2009-04-19 08:46:02 +0900137 unsigned int done = blk_rq_bytes(drive->hwif->rq);
138
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100139 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
Borislav Petkov757ced82008-02-02 19:56:37 +0100140 ide_floppy_report_error(floppy, pc);
Tejun Heoeb6a61b2009-04-19 08:46:02 +0900141
Borislav Petkov757ced82008-02-02 19:56:37 +0100142 /* Giving up */
Bartlomiej Zolnierkiewiczc152cc12009-03-27 12:46:34 +0100143 pc->error = IDE_DRV_ERROR_GENERAL;
Borislav Petkov757ced82008-02-02 19:56:37 +0100144
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100145 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewiczb14c7212008-10-13 21:39:30 +0200146 drive->pc_callback(drive, 0);
Tejun Heoeb6a61b2009-04-19 08:46:02 +0900147 ide_complete_rq(drive, -EIO, done);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 return ide_stopped;
149 }
150
Borislav Petkov088b1b82009-01-02 13:34:47 +0100151 ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
153 pc->retries++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100155 return ide_issue_pc(drive, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156}
157
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200158void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159{
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200160 ide_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100161 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 pc->c[7] = 255;
163 pc->c[8] = 255;
Borislav Petkov8e555122008-04-18 00:46:27 +0200164 pc->req_xfer = 255;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165}
166
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100167/* A mode sense command is used to "sense" floppy parameters. */
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200168void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169{
Borislav Petkov24a5d702008-02-02 19:56:34 +0100170 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100171
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200172 ide_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100173 pc->c[0] = GPCMD_MODE_SENSE_10;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 pc->c[1] = 0;
Bartlomiej Zolnierkiewicz4de4b9e2008-10-10 22:39:36 +0200175 pc->c[2] = page_code;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
177 switch (page_code) {
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100178 case IDEFLOPPY_CAPABILITIES_PAGE:
179 length += 12;
180 break;
181 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
182 length += 32;
183 break;
184 default:
Borislav Petkov7b355722008-10-13 21:39:35 +0200185 printk(KERN_ERR PFX "unsupported page code in %s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 }
Borislav Petkov8f622432008-02-02 19:56:33 +0100187 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
Borislav Petkov8e555122008-04-18 00:46:27 +0200188 pc->req_xfer = length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189}
190
Borislav Petkov7b355722008-10-13 21:39:35 +0200191static void idefloppy_create_rw_cmd(ide_drive_t *drive,
Borislav Petkov8e555122008-04-18 00:46:27 +0200192 struct ide_atapi_pc *pc, struct request *rq,
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100193 unsigned long sector)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200195 struct ide_disk_obj *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 int block = sector / floppy->bs_factor;
Tejun Heo9780e2d2009-05-07 22:24:40 +0900197 int blocks = blk_rq_sectors(rq) / floppy->bs_factor;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 int cmd = rq_data_dir(rq);
199
Borislav Petkov088b1b82009-01-02 13:34:47 +0100200 ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200202 ide_init_pc(pc);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100203 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
204 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
Borislav Petkov8f622432008-02-02 19:56:33 +0100205 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100206
Borislav Petkov20cd93b2008-07-23 19:56:00 +0200207 memcpy(rq->cmd, pc->c, 12);
208
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 pc->rq = rq;
Christoph Hellwig7b6d91d2010-08-07 18:20:39 +0200210 if (rq->cmd_flags & REQ_WRITE)
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100211 pc->flags |= PC_FLAG_WRITING;
Borislav Petkov19f52a72009-05-04 09:53:03 +0200212
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200213 pc->flags |= PC_FLAG_DMA_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214}
215
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200216static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200217 struct ide_atapi_pc *pc, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218{
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200219 ide_init_pc(pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 memcpy(pc->c, rq->cmd, sizeof(pc->c));
Jens Axboe3d6392c2007-07-09 12:38:05 +0200221 pc->rq = rq;
Tejun Heo34b7d2c2009-05-07 22:24:43 +0900222 if (blk_rq_bytes(rq)) {
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200223 pc->flags |= PC_FLAG_DMA_OK;
Tejun Heo89689322009-04-19 07:00:42 +0900224 if (rq_data_dir(rq) == WRITE)
225 pc->flags |= PC_FLAG_WRITING;
226 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227}
228
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200229static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
230 struct request *rq, sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200232 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100233 struct ide_cmd cmd;
Borislav Petkov8e555122008-04-18 00:46:27 +0200234 struct ide_atapi_pc *pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
Bartlomiej Zolnierkiewicz349d12a2009-03-31 20:15:26 +0200236 ide_debug_log(IDE_DBG_FUNC, "enter, cmd: 0x%x\n", rq->cmd[0]);
237
Borislav Petkov088b1b82009-01-02 13:34:47 +0100238 if (drive->debug_mask & IDE_DBG_RQ)
239 blk_dump_rq_flags(rq, (rq->rq_disk
240 ? rq->rq_disk->disk_name
241 : "dev?"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
243 if (rq->errors >= ERROR_MAX) {
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100244 if (drive->failed_pc) {
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100245 ide_floppy_report_error(floppy, drive->failed_pc);
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100246 drive->failed_pc = NULL;
247 } else
Borislav Petkov7b355722008-10-13 21:39:35 +0200248 printk(KERN_ERR PFX "%s: I/O error\n", drive->name);
249
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200250 if (rq->cmd_type == REQ_TYPE_SPECIAL) {
Bartlomiej Zolnierkiewicz6902a532009-03-27 12:46:43 +0100251 rq->errors = 0;
Bartlomiej Zolnierkiewiczf974b192009-03-27 12:46:44 +0100252 ide_complete_rq(drive, 0, blk_rq_bytes(rq));
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100253 return ide_stopped;
254 } else
255 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 }
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200257
258 switch (rq->cmd_type) {
259 case REQ_TYPE_FS:
Tejun Heo9780e2d2009-05-07 22:24:40 +0900260 if (((long)blk_rq_pos(rq) % floppy->bs_factor) ||
261 (blk_rq_sectors(rq) % floppy->bs_factor)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200262 printk(KERN_ERR PFX "%s: unsupported r/w rq size\n",
263 drive->name);
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100264 goto out_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 }
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200266 pc = &floppy->queued_pc;
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200267 idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200268 break;
269 case REQ_TYPE_SPECIAL:
270 case REQ_TYPE_SENSE:
Tejun Heoac0b0112009-04-19 07:00:42 +0900271 pc = (struct ide_atapi_pc *)rq->special;
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200272 break;
273 case REQ_TYPE_BLOCK_PC:
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200274 pc = &floppy->queued_pc;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200275 idefloppy_blockpc_cmd(floppy, pc, rq);
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200276 break;
277 default:
Bartlomiej Zolnierkiewicz2c7eaa42009-06-15 22:16:10 +0200278 BUG();
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200279 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
Borislav Petkov06875322009-04-19 07:00:42 +0900281 ide_prep_sense(drive, rq);
282
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100283 memset(&cmd, 0, sizeof(cmd));
284
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100285 if (rq_data_dir(rq))
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100286 cmd.tf_flags |= IDE_TFLAG_WRITE;
287
288 cmd.rq = rq;
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100289
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200290 if (rq->cmd_type == REQ_TYPE_FS || blk_rq_bytes(rq)) {
Borislav Petkovdfb7e622009-05-01 20:35:21 +0200291 ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100292 ide_map_sg(drive, &cmd);
Borislav Petkov3eb76c12009-03-13 21:16:12 +0100293 }
Borislav Petkovb98b3402008-10-10 22:39:35 +0200294
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 pc->rq = rq;
Bartlomiej Zolnierkiewicz5d418932008-07-15 21:21:57 +0200296
Bartlomiej Zolnierkiewiczb788ee92009-03-27 12:46:46 +0100297 return ide_floppy_issue_pc(drive, &cmd, pc);
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100298out_end:
299 drive->failed_pc = NULL;
Christoph Hellwig33659eb2010-08-07 18:17:56 +0200300 if (rq->cmd_type != REQ_TYPE_FS && rq->errors == 0)
Bartlomiej Zolnierkiewicz89f78b32009-03-27 12:46:43 +0100301 rq->errors = -EIO;
Bartlomiej Zolnierkiewicz5e955242009-06-23 11:27:27 +0000302 ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
Bartlomiej Zolnierkiewicz313afea2009-03-27 12:46:34 +0100303 return ide_stopped;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304}
305
306/*
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100307 * Look at the flexible disk page parameters. We ignore the CHS capacity
308 * parameters and use the LBA parameters instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 */
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100310static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive,
311 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200313 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +0200314 struct gendisk *disk = floppy->disk;
Borislav Petkovd9a68302009-05-02 10:43:11 +0200315 u8 *page, buf[40];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 int capacity, lba_capacity;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100317 u16 transfer_rate, sector_size, cyls, rpm;
318 u8 heads, sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100320 ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100321
Borislav Petkovd9a68302009-05-02 10:43:11 +0200322 if (ide_queue_pc_tail(drive, disk, pc, buf, pc->req_xfer)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200323 printk(KERN_ERR PFX "Can't get flexible disk page params\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 return 1;
325 }
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200326
Borislav Petkovd9a68302009-05-02 10:43:11 +0200327 if (buf[3] & 0x80)
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200328 drive->dev_flags |= IDE_DFLAG_WP;
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200329 else
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200330 drive->dev_flags &= ~IDE_DFLAG_WP;
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200331
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200332 set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP));
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200333
Borislav Petkovd9a68302009-05-02 10:43:11 +0200334 page = &buf[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
Borislav Petkovd9a68302009-05-02 10:43:11 +0200336 transfer_rate = be16_to_cpup((__be16 *)&buf[8 + 2]);
337 sector_size = be16_to_cpup((__be16 *)&buf[8 + 6]);
338 cyls = be16_to_cpup((__be16 *)&buf[8 + 8]);
339 rpm = be16_to_cpup((__be16 *)&buf[8 + 28]);
340 heads = buf[8 + 4];
341 sectors = buf[8 + 5];
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100342
343 capacity = cyls * heads * sectors * sector_size;
344
345 if (memcmp(page, &floppy->flexible_disk_page, 32))
Borislav Petkov7b355722008-10-13 21:39:35 +0200346 printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 "%d sector size, %d rpm\n",
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100348 drive->name, capacity / 1024, cyls, heads,
349 sectors, transfer_rate / 8, sector_size, rpm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100351 memcpy(&floppy->flexible_disk_page, page, 32);
352 drive->bios_cyl = cyls;
353 drive->bios_head = heads;
354 drive->bios_sect = sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 lba_capacity = floppy->blocks * floppy->block_size;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100356
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 if (capacity < lba_capacity) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200358 printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 "bytes, but the drive only handles %d\n",
360 drive->name, lba_capacity, capacity);
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100361 floppy->blocks = floppy->block_size ?
362 capacity / floppy->block_size : 0;
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200363 drive->capacity64 = floppy->blocks * floppy->bs_factor;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 }
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200365
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 return 0;
367}
368
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369/*
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100370 * Determine if a media is present in the floppy drive, and if so, its LBA
371 * capacity.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 */
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200373static int ide_floppy_get_capacity(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200375 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +0200376 struct gendisk *disk = floppy->disk;
Borislav Petkov8e555122008-04-18 00:46:27 +0200377 struct ide_atapi_pc pc;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100378 u8 *cap_desc;
Bartlomiej Zolnierkiewicz41fa9f82009-03-31 20:15:25 +0200379 u8 pc_buf[256], header_len, desc_cnt;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100380 int i, rc = 1, blocks, length;
381
Bartlomiej Zolnierkiewicz349d12a2009-03-31 20:15:26 +0200382 ide_debug_log(IDE_DBG_FUNC, "enter");
383
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 drive->bios_cyl = 0;
385 drive->bios_head = drive->bios_sect = 0;
Alan Coxfdb77da2007-02-17 02:40:20 +0100386 floppy->blocks = 0;
387 floppy->bs_factor = 1;
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200388 drive->capacity64 = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200390 ide_floppy_create_read_capacity_cmd(&pc);
Borislav Petkovb13345f2009-05-02 10:26:12 +0200391 if (ide_queue_pc_tail(drive, disk, &pc, pc_buf, pc.req_xfer)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200392 printk(KERN_ERR PFX "Can't get floppy parameters\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 return 1;
394 }
Borislav Petkovb13345f2009-05-02 10:26:12 +0200395 header_len = pc_buf[3];
396 cap_desc = &pc_buf[4];
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100397 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100399 for (i = 0; i < desc_cnt; i++) {
400 unsigned int desc_start = 4 + i*8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
Borislav Petkovb13345f2009-05-02 10:26:12 +0200402 blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
403 length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100404
Borislav Petkov7b355722008-10-13 21:39:35 +0200405 ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, "
Borislav Petkov088b1b82009-01-02 13:34:47 +0100406 "%d sector size",
407 i, blocks * length / 1024,
408 blocks, length);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100409
410 if (i)
411 continue;
412 /*
413 * the code below is valid only for the 1st descriptor, ie i=0
414 */
415
Borislav Petkovb13345f2009-05-02 10:26:12 +0200416 switch (pc_buf[desc_start + 4] & 0x03) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 /* Clik! drive returns this instead of CAPACITY_CURRENT */
418 case CAPACITY_UNFORMATTED:
Borislav Petkovea68d272008-07-23 19:56:01 +0200419 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100420 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 * If it is not a clik drive, break out
422 * (maintains previous driver behaviour)
423 */
424 break;
425 case CAPACITY_CURRENT:
426 /* Normal Zip/LS-120 disks */
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100427 if (memcmp(cap_desc, &floppy->cap_desc, 8))
Borislav Petkov7b355722008-10-13 21:39:35 +0200428 printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d "
429 "sector size\n",
430 drive->name, blocks * length / 1024,
431 blocks, length);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100432 memcpy(&floppy->cap_desc, cap_desc, 8);
433
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 if (!length || length % 512) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200435 printk(KERN_NOTICE PFX "%s: %d bytes block size"
436 " not supported\n", drive->name, length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 } else {
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100438 floppy->blocks = blocks;
439 floppy->block_size = length;
440 floppy->bs_factor = length / 512;
441 if (floppy->bs_factor != 1)
Borislav Petkov7b355722008-10-13 21:39:35 +0200442 printk(KERN_NOTICE PFX "%s: Warning: "
443 "non 512 bytes block size not "
444 "fully supported\n",
445 drive->name);
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200446 drive->capacity64 =
447 floppy->blocks * floppy->bs_factor;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100448 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 }
450 break;
451 case CAPACITY_NO_CARTRIDGE:
452 /*
453 * This is a KERN_ERR so it appears on screen
454 * for the user to see
455 */
Borislav Petkov7b355722008-10-13 21:39:35 +0200456 printk(KERN_ERR PFX "%s: No disk in drive\n",
457 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 break;
459 case CAPACITY_INVALID:
Borislav Petkov7b355722008-10-13 21:39:35 +0200460 printk(KERN_ERR PFX "%s: Invalid capacity for disk "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 "in drive\n", drive->name);
462 break;
463 }
Borislav Petkov088b1b82009-01-02 13:34:47 +0100464 ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d",
Borislav Petkovb13345f2009-05-02 10:26:12 +0200465 pc_buf[desc_start + 4] & 0x03);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 }
467
468 /* Clik! disk does not support get_flexible_disk_page */
Borislav Petkovea68d272008-07-23 19:56:01 +0200469 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100470 (void) ide_floppy_get_flexible_disk_page(drive, &pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 return rc;
473}
474
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200475static void ide_floppy_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476{
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200477 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200478 u16 *id = drive->id;
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200479
Bartlomiej Zolnierkiewicz85e39032008-10-13 21:39:32 +0200480 drive->pc_callback = ide_floppy_callback;
Borislav Petkov3ad67762008-04-18 00:46:25 +0200481
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100483 * We used to check revisions here. At this point however I'm giving up.
484 * Just assume they are all broken, its easier.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 *
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100486 * The actual reason for the workarounds was likely a driver bug after
487 * all rather than a firmware bug, and the workaround below used to hide
488 * it. It should be fixed as of version 1.9, but to be on the safe side
489 * we'll leave the limitation below for the 2.2.x tree.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200491 if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) {
Borislav Petkovea68d272008-07-23 19:56:01 +0200492 drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 /* This value will be visible in the /proc/ide/hdx/settings */
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +0200494 drive->pc_delay = IDEFLOPPY_PC_DELAY;
Martin K. Petersen086fa5f2010-02-26 00:20:38 -0500495 blk_queue_max_hw_sectors(drive->queue, 64);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 }
497
498 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100499 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
500 * nasty clicking noises without it, so please don't remove this.
501 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200502 if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) {
Martin K. Petersen086fa5f2010-02-26 00:20:38 -0500503 blk_queue_max_hw_sectors(drive->queue, 64);
Borislav Petkovea68d272008-07-23 19:56:01 +0200504 drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +0200505 /* IOMEGA Clik! drives do not support lock/unlock commands */
Bartlomiej Zolnierkiewicz42619d32008-10-17 18:09:11 +0200506 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 }
508
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100509 (void) ide_floppy_get_capacity(drive);
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +0200510
511 ide_proc_register_driver(drive, floppy->driver);
Bartlomiej Zolnierkiewiczae9f9f02008-10-17 18:09:10 +0200512
513 drive->dev_flags |= IDE_DFLAG_ATTACH;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514}
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200515
516static void ide_floppy_flush(ide_drive_t *drive)
517{
518}
519
520static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk)
521{
522 int ret = 0;
523
524 if (ide_do_test_unit_ready(drive, disk))
525 ide_do_start_stop(drive, disk, 1);
526
527 ret = ide_floppy_get_capacity(drive);
528
529 set_capacity(disk, ide_gd_capacity(drive));
530
531 return ret;
532}
533
534const struct ide_disk_ops ide_atapi_disk_ops = {
535 .check = ide_check_atapi_device,
536 .get_capacity = ide_floppy_get_capacity,
537 .setup = ide_floppy_setup,
538 .flush = ide_floppy_flush,
539 .init_media = ide_floppy_init_media,
540 .set_doorlock = ide_set_media_lock,
541 .do_request = ide_floppy_do_request,
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200542 .ioctl = ide_floppy_ioctl,
543};