blob: f9ad4b3021ee885348c192917d85c91cb0261092 [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>
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
Borislav Petkov0571c7a2008-02-02 19:56:38 +010064/* Error code returned in rq->errors to the higher part of the driver. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070065#define IDEFLOPPY_ERROR_GENERAL 101
66
Linus Torvalds1da177e2005-04-16 15:20:36 -070067/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +010068 * Used to finish servicing a request. For read/write requests, we will call
69 * ide_end_request to pass to the next buffer.
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 */
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +020071static int ide_floppy_end_request(ide_drive_t *drive, int uptodate, int nsecs)
Linus Torvalds1da177e2005-04-16 15:20:36 -070072{
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +010073 struct request *rq = drive->hwif->rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 int error;
75
Borislav Petkov088b1b82009-01-02 13:34:47 +010076 ide_debug_log(IDE_DBG_FUNC, "enter");
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
78 switch (uptodate) {
Borislav Petkov7b355722008-10-13 21:39:35 +020079 case 0:
80 error = IDEFLOPPY_ERROR_GENERAL;
81 break;
82
83 case 1:
84 error = 0;
85 break;
86
87 default:
88 error = uptodate;
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 }
Borislav Petkov7b355722008-10-13 21:39:35 +020090
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 if (error)
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +010092 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewiczcc495552009-03-27 12:46:33 +010093
Jens Axboe4aff5e22006-08-10 08:44:47 +020094 if (!blk_special_request(rq)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 /* our real local end request function */
96 ide_end_request(drive, uptodate, nsecs);
97 return 0;
98 }
99 rq->errors = error;
100 /* fixme: need to move this local also */
Bartlomiej Zolnierkiewicza09485d2009-03-27 12:46:31 +0100101 ide_complete_rq(drive, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 return 0;
103}
104
Borislav Petkov8e555122008-04-18 00:46:27 +0200105static void idefloppy_update_buffers(ide_drive_t *drive,
106 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107{
108 struct request *rq = pc->rq;
109 struct bio *bio = rq->bio;
110
111 while ((bio = rq->bio) != NULL)
Bartlomiej Zolnierkiewiczc84d9bb2008-10-17 18:09:13 +0200112 ide_floppy_end_request(drive, 1, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113}
114
Bartlomiej Zolnierkiewiczb14c7212008-10-13 21:39:30 +0200115static void ide_floppy_callback(ide_drive_t *drive, int dsc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200117 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200118 struct ide_atapi_pc *pc = drive->pc;
Borislav Petkov81f49382008-07-15 21:21:56 +0200119 int uptodate = pc->error ? 0 : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120
Borislav Petkov088b1b82009-01-02 13:34:47 +0100121 ide_debug_log(IDE_DBG_FUNC, "enter");
Borislav Petkovbcc77d92008-02-02 19:56:34 +0100122
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100123 if (drive->failed_pc == pc)
124 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewiczdd2e9a02008-07-15 21:22:01 +0200125
Borislav Petkov81f49382008-07-15 21:21:56 +0200126 if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
127 (pc->rq && blk_pc_request(pc->rq)))
128 uptodate = 1; /* FIXME */
129 else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200130 u8 *buf = pc->buf;
Borislav Petkova6ff2d32008-02-02 19:56:34 +0100131
Borislav Petkov81f49382008-07-15 21:21:56 +0200132 if (!pc->error) {
133 floppy->sense_key = buf[2] & 0x0F;
134 floppy->asc = buf[12];
135 floppy->ascq = buf[13];
136 floppy->progress_indication = buf[15] & 0x80 ?
137 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
138
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100139 if (drive->failed_pc)
Borislav Petkov088b1b82009-01-02 13:34:47 +0100140 ide_debug_log(IDE_DBG_PC, "pc = %x",
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100141 drive->failed_pc->c[0]);
Borislav Petkov81f49382008-07-15 21:21:56 +0200142
Borislav Petkov7b355722008-10-13 21:39:35 +0200143 ide_debug_log(IDE_DBG_SENSE, "sense key = %x, asc = %x,"
Borislav Petkov088b1b82009-01-02 13:34:47 +0100144 "ascq = %x", floppy->sense_key,
Borislav Petkov7b355722008-10-13 21:39:35 +0200145 floppy->asc, floppy->ascq);
Borislav Petkov81f49382008-07-15 21:21:56 +0200146 } else
Borislav Petkov7b355722008-10-13 21:39:35 +0200147 printk(KERN_ERR PFX "Error in REQUEST SENSE itself - "
148 "Aborting request!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
Bartlomiej Zolnierkiewiczc84d9bb2008-10-17 18:09:13 +0200151 ide_floppy_end_request(drive, uptodate, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152}
153
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200154static void ide_floppy_report_error(struct ide_disk_obj *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200155 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156{
Borislav Petkovd652c132008-02-02 19:56:35 +0100157 /* supress error messages resulting from Medium not present */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 if (floppy->sense_key == 0x02 &&
159 floppy->asc == 0x3a &&
160 floppy->ascq == 0x00)
Borislav Petkovd652c132008-02-02 19:56:35 +0100161 return;
162
Borislav Petkov7b355722008-10-13 21:39:35 +0200163 printk(KERN_ERR PFX "%s: I/O error, pc = %2x, key = %2x, "
Borislav Petkovd652c132008-02-02 19:56:35 +0100164 "asc = %2x, ascq = %2x\n",
165 floppy->drive->name, pc->c[0], floppy->sense_key,
166 floppy->asc, floppy->ascq);
167
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168}
169
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100170static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
Borislav Petkov8e555122008-04-18 00:46:27 +0200171 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200173 struct ide_disk_obj *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100175 if (drive->failed_pc == NULL &&
Borislav Petkov30d67092008-02-02 19:56:33 +0100176 pc->c[0] != GPCMD_REQUEST_SENSE)
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100177 drive->failed_pc = pc;
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200178
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 /* Set the current packet command */
Bartlomiej Zolnierkiewicz2b9efba2008-10-13 21:39:31 +0200180 drive->pc = pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
Borislav Petkov757ced82008-02-02 19:56:37 +0100182 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100183 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
Borislav Petkov757ced82008-02-02 19:56:37 +0100184 ide_floppy_report_error(floppy, pc);
185 /* Giving up */
186 pc->error = IDEFLOPPY_ERROR_GENERAL;
187
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100188 drive->failed_pc = NULL;
Bartlomiej Zolnierkiewiczb14c7212008-10-13 21:39:30 +0200189 drive->pc_callback(drive, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 return ide_stopped;
191 }
192
Borislav Petkov088b1b82009-01-02 13:34:47 +0100193 ide_debug_log(IDE_DBG_FUNC, "retry #%d", pc->retries);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
195 pc->retries++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
Borislav Petkov28ad91d2009-01-02 16:12:56 +0100197 return ide_issue_pc(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198}
199
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200200void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201{
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200202 ide_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100203 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 pc->c[7] = 255;
205 pc->c[8] = 255;
Borislav Petkov8e555122008-04-18 00:46:27 +0200206 pc->req_xfer = 255;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207}
208
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100209/* A mode sense command is used to "sense" floppy parameters. */
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200210void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211{
Borislav Petkov24a5d702008-02-02 19:56:34 +0100212 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100213
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200214 ide_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100215 pc->c[0] = GPCMD_MODE_SENSE_10;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 pc->c[1] = 0;
Bartlomiej Zolnierkiewicz4de4b9e2008-10-10 22:39:36 +0200217 pc->c[2] = page_code;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218
219 switch (page_code) {
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100220 case IDEFLOPPY_CAPABILITIES_PAGE:
221 length += 12;
222 break;
223 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
224 length += 32;
225 break;
226 default:
Borislav Petkov7b355722008-10-13 21:39:35 +0200227 printk(KERN_ERR PFX "unsupported page code in %s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 }
Borislav Petkov8f622432008-02-02 19:56:33 +0100229 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
Borislav Petkov8e555122008-04-18 00:46:27 +0200230 pc->req_xfer = length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231}
232
Borislav Petkov7b355722008-10-13 21:39:35 +0200233static void idefloppy_create_rw_cmd(ide_drive_t *drive,
Borislav Petkov8e555122008-04-18 00:46:27 +0200234 struct ide_atapi_pc *pc, struct request *rq,
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100235 unsigned long sector)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200237 struct ide_disk_obj *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 int block = sector / floppy->bs_factor;
239 int blocks = rq->nr_sectors / floppy->bs_factor;
240 int cmd = rq_data_dir(rq);
241
Borislav Petkov088b1b82009-01-02 13:34:47 +0100242 ide_debug_log(IDE_DBG_FUNC, "block: %d, blocks: %d", block, blocks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200244 ide_init_pc(pc);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100245 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
246 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
Borislav Petkov8f622432008-02-02 19:56:33 +0100247 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100248
Borislav Petkov20cd93b2008-07-23 19:56:00 +0200249 memcpy(rq->cmd, pc->c, 12);
250
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 pc->rq = rq;
Borislav Petkovb98b3402008-10-10 22:39:35 +0200252 pc->b_count = 0;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200253 if (rq->cmd_flags & REQ_RW)
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100254 pc->flags |= PC_FLAG_WRITING;
Borislav Petkov8e555122008-04-18 00:46:27 +0200255 pc->buf = NULL;
256 pc->req_xfer = pc->buf_size = blocks * floppy->block_size;
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200257 pc->flags |= PC_FLAG_DMA_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258}
259
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200260static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200261 struct ide_atapi_pc *pc, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262{
Bartlomiej Zolnierkiewicz7bf74202008-10-10 22:39:37 +0200263 ide_init_pc(pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 memcpy(pc->c, rq->cmd, sizeof(pc->c));
Jens Axboe3d6392c2007-07-09 12:38:05 +0200265 pc->rq = rq;
Borislav Petkovb98b3402008-10-10 22:39:35 +0200266 pc->b_count = 0;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200267 if (rq->data_len && rq_data_dir(rq) == WRITE)
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100268 pc->flags |= PC_FLAG_WRITING;
Borislav Petkov8e555122008-04-18 00:46:27 +0200269 pc->buf = rq->data;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200270 if (rq->bio)
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200271 pc->flags |= PC_FLAG_DMA_OK;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200272 /*
273 * possibly problematic, doesn't look like ide-floppy correctly
274 * handled scattered requests if dma fails...
275 */
Borislav Petkov8e555122008-04-18 00:46:27 +0200276 pc->req_xfer = pc->buf_size = rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277}
278
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200279static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
280 struct request *rq, sector_t block)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200282 struct ide_disk_obj *floppy = drive->driver_data;
Borislav Petkovb98b3402008-10-10 22:39:35 +0200283 ide_hwif_t *hwif = drive->hwif;
Borislav Petkov8e555122008-04-18 00:46:27 +0200284 struct ide_atapi_pc *pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285
Borislav Petkov088b1b82009-01-02 13:34:47 +0100286 if (drive->debug_mask & IDE_DBG_RQ)
287 blk_dump_rq_flags(rq, (rq->rq_disk
288 ? rq->rq_disk->disk_name
289 : "dev?"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
291 if (rq->errors >= ERROR_MAX) {
Bartlomiej Zolnierkiewicz5e2040fd2009-03-27 12:46:34 +0100292 if (drive->failed_pc)
293 ide_floppy_report_error(floppy, drive->failed_pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 else
Borislav Petkov7b355722008-10-13 21:39:35 +0200295 printk(KERN_ERR PFX "%s: I/O error\n", drive->name);
296
Bartlomiej Zolnierkiewiczc84d9bb2008-10-17 18:09:13 +0200297 ide_floppy_end_request(drive, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 return ide_stopped;
299 }
Jens Axboe4aff5e22006-08-10 08:44:47 +0200300 if (blk_fs_request(rq)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 if (((long)rq->sector % floppy->bs_factor) ||
302 (rq->nr_sectors % floppy->bs_factor)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200303 printk(KERN_ERR PFX "%s: unsupported r/w rq size\n",
304 drive->name);
Bartlomiej Zolnierkiewiczc84d9bb2008-10-17 18:09:13 +0200305 ide_floppy_end_request(drive, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 return ide_stopped;
307 }
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200308 pc = &floppy->queued_pc;
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200309 idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
Jens Axboe4aff5e22006-08-10 08:44:47 +0200310 } else if (blk_special_request(rq)) {
Borislav Petkov8e555122008-04-18 00:46:27 +0200311 pc = (struct ide_atapi_pc *) rq->buffer;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200312 } else if (blk_pc_request(rq)) {
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200313 pc = &floppy->queued_pc;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200314 idefloppy_blockpc_cmd(floppy, pc, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 } else {
Borislav Petkov7b355722008-10-13 21:39:35 +0200316 blk_dump_rq_flags(rq, PFX "unsupported command in queue");
Bartlomiej Zolnierkiewiczc84d9bb2008-10-17 18:09:13 +0200317 ide_floppy_end_request(drive, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 return ide_stopped;
319 }
320
Borislav Petkov3eb76c12009-03-13 21:16:12 +0100321 if (blk_fs_request(rq) || pc->req_xfer) {
322 ide_init_sg_cmd(drive, rq);
323 ide_map_sg(drive, rq);
324 }
Borislav Petkovb98b3402008-10-10 22:39:35 +0200325
326 pc->sg = hwif->sg_table;
327 pc->sg_cnt = hwif->sg_nents;
328
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 pc->rq = rq;
Bartlomiej Zolnierkiewicz5d418932008-07-15 21:21:57 +0200330
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 return idefloppy_issue_pc(drive, pc);
332}
333
334/*
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100335 * Look at the flexible disk page parameters. We ignore the CHS capacity
336 * parameters and use the LBA parameters instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 */
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100338static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive,
339 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200341 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +0200342 struct gendisk *disk = floppy->disk;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100343 u8 *page;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 int capacity, lba_capacity;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100345 u16 transfer_rate, sector_size, cyls, rpm;
346 u8 heads, sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100348 ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100349
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100350 if (ide_queue_pc_tail(drive, disk, pc)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200351 printk(KERN_ERR PFX "Can't get flexible disk page params\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 return 1;
353 }
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200354
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100355 if (pc->buf[3] & 0x80)
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200356 drive->dev_flags |= IDE_DFLAG_WP;
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200357 else
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200358 drive->dev_flags &= ~IDE_DFLAG_WP;
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200359
Bartlomiej Zolnierkiewiczda167872008-10-17 18:09:11 +0200360 set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP));
Bartlomiej Zolnierkiewicz49cac392008-10-10 22:39:38 +0200361
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100362 page = &pc->buf[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100364 transfer_rate = be16_to_cpup((__be16 *)&pc->buf[8 + 2]);
365 sector_size = be16_to_cpup((__be16 *)&pc->buf[8 + 6]);
366 cyls = be16_to_cpup((__be16 *)&pc->buf[8 + 8]);
367 rpm = be16_to_cpup((__be16 *)&pc->buf[8 + 28]);
368 heads = pc->buf[8 + 4];
369 sectors = pc->buf[8 + 5];
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100370
371 capacity = cyls * heads * sectors * sector_size;
372
373 if (memcmp(page, &floppy->flexible_disk_page, 32))
Borislav Petkov7b355722008-10-13 21:39:35 +0200374 printk(KERN_INFO PFX "%s: %dkB, %d/%d/%d CHS, %d kBps, "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 "%d sector size, %d rpm\n",
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100376 drive->name, capacity / 1024, cyls, heads,
377 sectors, transfer_rate / 8, sector_size, rpm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100379 memcpy(&floppy->flexible_disk_page, page, 32);
380 drive->bios_cyl = cyls;
381 drive->bios_head = heads;
382 drive->bios_sect = sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 lba_capacity = floppy->blocks * floppy->block_size;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100384
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 if (capacity < lba_capacity) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200386 printk(KERN_NOTICE PFX "%s: The disk reports a capacity of %d "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 "bytes, but the drive only handles %d\n",
388 drive->name, lba_capacity, capacity);
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100389 floppy->blocks = floppy->block_size ?
390 capacity / floppy->block_size : 0;
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200391 drive->capacity64 = floppy->blocks * floppy->bs_factor;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 }
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200393
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 return 0;
395}
396
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397/*
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100398 * Determine if a media is present in the floppy drive, and if so, its LBA
399 * capacity.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 */
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200401static int ide_floppy_get_capacity(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402{
Bartlomiej Zolnierkiewicz0df96272008-10-17 18:09:16 +0200403 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +0200404 struct gendisk *disk = floppy->disk;
Borislav Petkov8e555122008-04-18 00:46:27 +0200405 struct ide_atapi_pc pc;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100406 u8 *cap_desc;
407 u8 header_len, desc_cnt;
408 int i, rc = 1, blocks, length;
409
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 drive->bios_cyl = 0;
411 drive->bios_head = drive->bios_sect = 0;
Alan Coxfdb77da2007-02-17 02:40:20 +0100412 floppy->blocks = 0;
413 floppy->bs_factor = 1;
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200414 drive->capacity64 = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415
Bartlomiej Zolnierkiewicz01278542008-10-10 22:39:38 +0200416 ide_floppy_create_read_capacity_cmd(&pc);
Bartlomiej Zolnierkiewicz2ac07d92008-10-10 22:39:38 +0200417 if (ide_queue_pc_tail(drive, disk, &pc)) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200418 printk(KERN_ERR PFX "Can't get floppy parameters\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 return 1;
420 }
Borislav Petkov8e555122008-04-18 00:46:27 +0200421 header_len = pc.buf[3];
422 cap_desc = &pc.buf[4];
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100423 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100425 for (i = 0; i < desc_cnt; i++) {
426 unsigned int desc_start = 4 + i*8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
Harvey Harrison85ae98a2008-07-16 20:33:47 +0200428 blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]);
429 length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100430
Borislav Petkov7b355722008-10-13 21:39:35 +0200431 ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, "
Borislav Petkov088b1b82009-01-02 13:34:47 +0100432 "%d sector size",
433 i, blocks * length / 1024,
434 blocks, length);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100435
436 if (i)
437 continue;
438 /*
439 * the code below is valid only for the 1st descriptor, ie i=0
440 */
441
Borislav Petkov8e555122008-04-18 00:46:27 +0200442 switch (pc.buf[desc_start + 4] & 0x03) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 /* Clik! drive returns this instead of CAPACITY_CURRENT */
444 case CAPACITY_UNFORMATTED:
Borislav Petkovea68d272008-07-23 19:56:01 +0200445 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100446 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 * If it is not a clik drive, break out
448 * (maintains previous driver behaviour)
449 */
450 break;
451 case CAPACITY_CURRENT:
452 /* Normal Zip/LS-120 disks */
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100453 if (memcmp(cap_desc, &floppy->cap_desc, 8))
Borislav Petkov7b355722008-10-13 21:39:35 +0200454 printk(KERN_INFO PFX "%s: %dkB, %d blocks, %d "
455 "sector size\n",
456 drive->name, blocks * length / 1024,
457 blocks, length);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100458 memcpy(&floppy->cap_desc, cap_desc, 8);
459
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 if (!length || length % 512) {
Borislav Petkov7b355722008-10-13 21:39:35 +0200461 printk(KERN_NOTICE PFX "%s: %d bytes block size"
462 " not supported\n", drive->name, length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 } else {
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100464 floppy->blocks = blocks;
465 floppy->block_size = length;
466 floppy->bs_factor = length / 512;
467 if (floppy->bs_factor != 1)
Borislav Petkov7b355722008-10-13 21:39:35 +0200468 printk(KERN_NOTICE PFX "%s: Warning: "
469 "non 512 bytes block size not "
470 "fully supported\n",
471 drive->name);
Bartlomiej Zolnierkiewicz6f840832008-10-17 18:09:10 +0200472 drive->capacity64 =
473 floppy->blocks * floppy->bs_factor;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100474 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 }
476 break;
477 case CAPACITY_NO_CARTRIDGE:
478 /*
479 * This is a KERN_ERR so it appears on screen
480 * for the user to see
481 */
Borislav Petkov7b355722008-10-13 21:39:35 +0200482 printk(KERN_ERR PFX "%s: No disk in drive\n",
483 drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 break;
485 case CAPACITY_INVALID:
Borislav Petkov7b355722008-10-13 21:39:35 +0200486 printk(KERN_ERR PFX "%s: Invalid capacity for disk "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 "in drive\n", drive->name);
488 break;
489 }
Borislav Petkov088b1b82009-01-02 13:34:47 +0100490 ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d",
491 pc.buf[desc_start + 4] & 0x03);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 }
493
494 /* Clik! disk does not support get_flexible_disk_page */
Borislav Petkovea68d272008-07-23 19:56:01 +0200495 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Linus Torvalds07bd3f42009-01-02 16:12:51 +0100496 (void) ide_floppy_get_flexible_disk_page(drive, &pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 return rc;
499}
500
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200501static void ide_floppy_setup(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502{
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200503 struct ide_disk_obj *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200504 u16 *id = drive->id;
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200505
Bartlomiej Zolnierkiewicz85e39032008-10-13 21:39:32 +0200506 drive->pc_callback = ide_floppy_callback;
507 drive->pc_update_buffers = idefloppy_update_buffers;
508 drive->pc_io_buffers = ide_io_buffers;
Borislav Petkov3ad67762008-04-18 00:46:25 +0200509
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100511 * We used to check revisions here. At this point however I'm giving up.
512 * Just assume they are all broken, its easier.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 *
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100514 * The actual reason for the workarounds was likely a driver bug after
515 * all rather than a firmware bug, and the workaround below used to hide
516 * it. It should be fixed as of version 1.9, but to be on the safe side
517 * we'll leave the limitation below for the 2.2.x tree.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200519 if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) {
Borislav Petkovea68d272008-07-23 19:56:01 +0200520 drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 /* This value will be visible in the /proc/ide/hdx/settings */
Bartlomiej Zolnierkiewiczbaf08f02008-10-13 21:39:32 +0200522 drive->pc_delay = IDEFLOPPY_PC_DELAY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 blk_queue_max_sectors(drive->queue, 64);
524 }
525
526 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100527 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
528 * nasty clicking noises without it, so please don't remove this.
529 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200530 if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 blk_queue_max_sectors(drive->queue, 64);
Borislav Petkovea68d272008-07-23 19:56:01 +0200532 drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
Bartlomiej Zolnierkiewicz05780422008-10-10 22:39:38 +0200533 /* IOMEGA Clik! drives do not support lock/unlock commands */
Bartlomiej Zolnierkiewicz42619d32008-10-17 18:09:11 +0200534 drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 }
536
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100537 (void) ide_floppy_get_capacity(drive);
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +0200538
539 ide_proc_register_driver(drive, floppy->driver);
Bartlomiej Zolnierkiewiczae9f9f02008-10-17 18:09:10 +0200540
541 drive->dev_flags |= IDE_DFLAG_ATTACH;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542}
Bartlomiej Zolnierkiewicz806f80a2008-10-17 18:09:14 +0200543
544static void ide_floppy_flush(ide_drive_t *drive)
545{
546}
547
548static int ide_floppy_init_media(ide_drive_t *drive, struct gendisk *disk)
549{
550 int ret = 0;
551
552 if (ide_do_test_unit_ready(drive, disk))
553 ide_do_start_stop(drive, disk, 1);
554
555 ret = ide_floppy_get_capacity(drive);
556
557 set_capacity(disk, ide_gd_capacity(drive));
558
559 return ret;
560}
561
562const struct ide_disk_ops ide_atapi_disk_ops = {
563 .check = ide_check_atapi_device,
564 .get_capacity = ide_floppy_get_capacity,
565 .setup = ide_floppy_setup,
566 .flush = ide_floppy_flush,
567 .init_media = ide_floppy_init_media,
568 .set_doorlock = ide_set_media_lock,
569 .do_request = ide_floppy_do_request,
570 .end_request = ide_floppy_end_request,
571 .ioctl = ide_floppy_ioctl,
572};