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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Borislav Petkovd3f20842008-02-01 23:09:33 +01002 * IDE ATAPI floppy driver.
3 *
Bartlomiej Zolnierkiewicz59bca8c2008-02-01 23:09:33 +01004 * Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il>
5 * Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net>
6 * Copyright (C) 2005 Bartlomiej Zolnierkiewicz
Borislav Petkov0571c7a2008-02-02 19:56:38 +01007 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 * This driver supports the following IDE floppy drives:
9 *
10 * LS-120/240 SuperDisk
11 * Iomega Zip 100/250
12 * Iomega PC Card Clik!/PocketZip
13 *
Borislav Petkovd3f20842008-02-01 23:09:33 +010014 * For a historical changelog see
15 * Documentation/ide/ChangeLog.ide-floppy.1996-2002
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 */
17
Bartlomiej Zolnierkiewicz51509ee2008-10-10 22:39:34 +020018#define DRV_NAME "ide-floppy"
19
Borislav Petkovfc6c5bc2008-02-02 19:56:38 +010020#define IDEFLOPPY_VERSION "1.00"
Linus Torvalds1da177e2005-04-16 15:20:36 -070021
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/module.h>
23#include <linux/types.h>
24#include <linux/string.h>
25#include <linux/kernel.h>
26#include <linux/delay.h>
27#include <linux/timer.h>
28#include <linux/mm.h>
29#include <linux/interrupt.h>
30#include <linux/major.h>
31#include <linux/errno.h>
32#include <linux/genhd.h>
33#include <linux/slab.h>
34#include <linux/cdrom.h>
35#include <linux/ide.h>
Bartlomiej Zolnierkiewicz3ceca722008-10-10 22:39:27 +020036#include <linux/hdreg.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#include <linux/bitops.h>
Arjan van de Vencf8b8972006-03-23 03:00:45 -080038#include <linux/mutex.h>
Borislav Petkovb98b3402008-10-10 22:39:35 +020039#include <linux/scatterlist.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040
Bartlomiej Zolnierkiewicz89636af2007-07-20 01:11:59 +020041#include <scsi/scsi_ioctl.h>
42
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#include <asm/byteorder.h>
Borislav Petkov7e8b1632008-02-02 19:56:34 +010044#include <linux/irq.h>
45#include <linux/uaccess.h>
46#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <asm/unaligned.h>
48
Borislav Petkovf373bd82008-02-02 19:56:36 +010049/* define to see debug info */
Linus Torvalds1da177e2005-04-16 15:20:36 -070050#define IDEFLOPPY_DEBUG_LOG 0
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
52/* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
Borislav Petkov0571c7a2008-02-02 19:56:38 +010053#define IDEFLOPPY_DEBUG(fmt, args...)
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
55#if IDEFLOPPY_DEBUG_LOG
Borislav Petkovbcc77d92008-02-02 19:56:34 +010056#define debug_log(fmt, args...) \
57 printk(KERN_INFO "ide-floppy: " fmt, ## args)
Linus Torvalds1da177e2005-04-16 15:20:36 -070058#else
Borislav Petkov0571c7a2008-02-02 19:56:38 +010059#define debug_log(fmt, args...) do {} while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070060#endif
61
62
Borislav Petkov0571c7a2008-02-02 19:56:38 +010063/* Some drives require a longer irq timeout. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070064#define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
65
66/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +010067 * After each failed packet command we issue a request sense command and retry
68 * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 */
70#define IDEFLOPPY_MAX_PC_RETRIES 3
71
72/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +010073 * With each packet command, we allocate a buffer of IDEFLOPPY_PC_BUFFER_SIZE
74 * bytes.
Linus Torvalds1da177e2005-04-16 15:20:36 -070075 */
76#define IDEFLOPPY_PC_BUFFER_SIZE 256
77
Borislav Petkov194ec0c2008-02-02 19:56:35 +010078/* format capacities descriptor codes */
Linus Torvalds1da177e2005-04-16 15:20:36 -070079#define CAPACITY_INVALID 0x00
80#define CAPACITY_UNFORMATTED 0x01
81#define CAPACITY_CURRENT 0x02
82#define CAPACITY_NO_CARTRIDGE 0x03
83
84/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +010085 * Most of our global data which we need to save even as we leave the driver
86 * due to an interrupt or a timer event is stored in a variable of type
87 * idefloppy_floppy_t, defined below.
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 */
89typedef struct ide_floppy_obj {
90 ide_drive_t *drive;
91 ide_driver_t *driver;
92 struct gendisk *disk;
93 struct kref kref;
Bartlomiej Zolnierkiewiczc94964a2007-02-17 02:40:24 +010094 unsigned int openers; /* protected by BKL for now */
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
96 /* Current packet command */
Borislav Petkov8e555122008-04-18 00:46:27 +020097 struct ide_atapi_pc *pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 /* Last failed packet command */
Borislav Petkov8e555122008-04-18 00:46:27 +020099 struct ide_atapi_pc *failed_pc;
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200100 /* used for blk_{fs,pc}_request() requests */
101 struct ide_atapi_pc queued_pc;
Bartlomiej Zolnierkiewicz394a4c22008-10-10 22:39:35 +0200102
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200103 struct ide_atapi_pc request_sense_pc;
Bartlomiej Zolnierkiewicz394a4c22008-10-10 22:39:35 +0200104 struct request request_sense_rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100106 /* Last error information */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 u8 sense_key, asc, ascq;
108 /* delay this long before sending packet command */
109 u8 ticks;
110 int progress_indication;
111
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100112 /* Device information */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 /* Current format */
114 int blocks, block_size, bs_factor;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100115 /* Last format capacity descriptor */
116 u8 cap_desc[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 /* Copy of the flexible disk page */
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100118 u8 flexible_disk_page[32];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 /* Write protect */
120 int wp;
121 /* Supports format progress report */
122 int srfp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123} idefloppy_floppy_t;
124
Bartlomiej Zolnierkiewiczc40d3d32005-08-18 22:09:21 +0200125#define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100127/* Defines for the MODE SENSE command */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128#define MODE_SENSE_CURRENT 0x00
129#define MODE_SENSE_CHANGEABLE 0x01
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100130#define MODE_SENSE_DEFAULT 0x02
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131#define MODE_SENSE_SAVED 0x03
132
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100133/* IOCTLs used in low-level formatting. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134#define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
135#define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
136#define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
137#define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
138
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100139/* Error code returned in rq->errors to the higher part of the driver. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140#define IDEFLOPPY_ERROR_GENERAL 101
141
142/*
Borislav Petkov948391d2008-02-02 19:56:34 +0100143 * Pages of the SELECT SENSE / MODE SENSE packet commands.
144 * See SFF-8070i spec.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 */
146#define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
147#define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
148
Arjan van de Vencf8b8972006-03-23 03:00:45 -0800149static DEFINE_MUTEX(idefloppy_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
151#define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
152
153#define ide_floppy_g(disk) \
154 container_of((disk)->private_data, struct ide_floppy_obj, driver)
155
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200156static void idefloppy_cleanup_obj(struct kref *);
157
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk)
159{
160 struct ide_floppy_obj *floppy = NULL;
161
Arjan van de Vencf8b8972006-03-23 03:00:45 -0800162 mutex_lock(&idefloppy_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 floppy = ide_floppy_g(disk);
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200164 if (floppy) {
Bartlomiej Zolnierkiewiczd3e33ff2008-08-05 18:16:59 +0200165 if (ide_device_get(floppy->drive))
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200166 floppy = NULL;
Bartlomiej Zolnierkiewiczd3e33ff2008-08-05 18:16:59 +0200167 else
168 kref_get(&floppy->kref);
Bartlomiej Zolnierkiewicz08da5912008-07-24 22:53:15 +0200169 }
Arjan van de Vencf8b8972006-03-23 03:00:45 -0800170 mutex_unlock(&idefloppy_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 return floppy;
172}
173
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174static void ide_floppy_put(struct ide_floppy_obj *floppy)
175{
Bartlomiej Zolnierkiewiczd3e33ff2008-08-05 18:16:59 +0200176 ide_drive_t *drive = floppy->drive;
177
Arjan van de Vencf8b8972006-03-23 03:00:45 -0800178 mutex_lock(&idefloppy_ref_mutex);
Borislav Petkov9a24b632008-02-02 19:56:33 +0100179 kref_put(&floppy->kref, idefloppy_cleanup_obj);
Bartlomiej Zolnierkiewiczd3e33ff2008-08-05 18:16:59 +0200180 ide_device_put(drive);
Arjan van de Vencf8b8972006-03-23 03:00:45 -0800181 mutex_unlock(&idefloppy_ref_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182}
183
184/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100185 * Used to finish servicing a request. For read/write requests, we will call
186 * ide_end_request to pass to the next buffer.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 */
Borislav Petkovc2b2b292008-04-18 00:46:27 +0200188static int idefloppy_end_request(ide_drive_t *drive, int uptodate, int nsecs)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189{
190 idefloppy_floppy_t *floppy = drive->driver_data;
191 struct request *rq = HWGROUP(drive)->rq;
192 int error;
193
Borislav Petkovbcc77d92008-02-02 19:56:34 +0100194 debug_log("Reached %s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196 switch (uptodate) {
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100197 case 0: error = IDEFLOPPY_ERROR_GENERAL; break;
198 case 1: error = 0; break;
199 default: error = uptodate;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 }
201 if (error)
202 floppy->failed_pc = NULL;
203 /* Why does this happen? */
204 if (!rq)
205 return 0;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200206 if (!blk_special_request(rq)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 /* our real local end request function */
208 ide_end_request(drive, uptodate, nsecs);
209 return 0;
210 }
211 rq->errors = error;
212 /* fixme: need to move this local also */
213 ide_end_drive_cmd(drive, 0, 0);
214 return 0;
215}
216
Borislav Petkov8e555122008-04-18 00:46:27 +0200217static void ide_floppy_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
Borislav Petkov32925e12008-02-02 19:56:36 +0100218 unsigned int bcount, int direction)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219{
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +0200220 ide_hwif_t *hwif = drive->hwif;
Borislav Petkovb98b3402008-10-10 22:39:35 +0200221 const struct ide_tp_ops *tp_ops = hwif->tp_ops;
222 xfer_func_t *xf = direction ? tp_ops->output_data : tp_ops->input_data;
223 struct scatterlist *sg = pc->sg;
224 char *buf;
NeilBrown5705f702007-09-25 12:35:59 +0200225 int count, done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226
Borislav Petkovb98b3402008-10-10 22:39:35 +0200227 while (bcount) {
228 count = min(sg->length - pc->b_count, bcount);
229 if (PageHighMem(sg_page(sg))) {
230 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231
Borislav Petkovb98b3402008-10-10 22:39:35 +0200232 local_irq_save(flags);
233 buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
234 xf(drive, NULL, buf + pc->b_count, count);
235 kunmap_atomic(buf - sg->offset, KM_IRQ0);
236 local_irq_restore(flags);
237 } else {
238 buf = sg_virt(sg);
239 xf(drive, NULL, buf + pc->b_count, count);
240 }
Jens Axboe6c92e692007-08-16 13:43:12 +0200241 bcount -= count;
242 pc->b_count += count;
243 done += count;
Borislav Petkovb98b3402008-10-10 22:39:35 +0200244
245 if (pc->b_count == sg->length) {
246 if (!--pc->sg_cnt)
247 break;
248 pc->sg = sg = sg_next(sg);
249 pc->b_count = 0;
250 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 }
252
Borislav Petkovc2b2b292008-04-18 00:46:27 +0200253 idefloppy_end_request(drive, 1, done >> 9);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
255 if (bcount) {
Borislav Petkov32925e12008-02-02 19:56:36 +0100256 printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n",
257 drive->name, __func__, bcount);
Bartlomiej Zolnierkiewicz9f87abe2008-04-28 23:44:41 +0200258 ide_pad_transfer(drive, direction, bcount);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 }
260}
261
Borislav Petkov8e555122008-04-18 00:46:27 +0200262static void idefloppy_update_buffers(ide_drive_t *drive,
263 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264{
265 struct request *rq = pc->rq;
266 struct bio *bio = rq->bio;
267
268 while ((bio = rq->bio) != NULL)
Borislav Petkovc2b2b292008-04-18 00:46:27 +0200269 idefloppy_end_request(drive, 1, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270}
271
272/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100273 * Generate a new packet command request in front of the request queue, before
274 * the current request so that it will be processed immediately, on the next
275 * pass through the driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 */
Borislav Petkov8e555122008-04-18 00:46:27 +0200277static void idefloppy_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc,
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100278 struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279{
280 struct ide_floppy_obj *floppy = drive->driver_data;
281
FUJITA Tomonori124cafc2008-07-15 21:21:44 +0200282 blk_rq_init(NULL, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 rq->buffer = (char *) pc;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200284 rq->cmd_type = REQ_TYPE_SPECIAL;
Bartlomiej Zolnierkiewicze8a96aa2008-07-15 21:21:41 +0200285 rq->cmd_flags |= REQ_PREEMPT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 rq->rq_disk = floppy->disk;
Borislav Petkov20cd93be2008-07-23 19:56:00 +0200287 memcpy(rq->cmd, pc->c, 12);
FUJITA Tomonori63f5abb2008-07-15 21:21:51 +0200288 ide_do_drive_cmd(drive, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289}
290
Borislav Petkov81f49382008-07-15 21:21:56 +0200291static void ide_floppy_callback(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292{
293 idefloppy_floppy_t *floppy = drive->driver_data;
Borislav Petkov81f49382008-07-15 21:21:56 +0200294 struct ide_atapi_pc *pc = floppy->pc;
295 int uptodate = pc->error ? 0 : 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
Borislav Petkovbcc77d92008-02-02 19:56:34 +0100297 debug_log("Reached %s\n", __func__);
298
Bartlomiej Zolnierkiewiczdd2e9a02008-07-15 21:22:01 +0200299 if (floppy->failed_pc == pc)
300 floppy->failed_pc = NULL;
301
Borislav Petkov81f49382008-07-15 21:21:56 +0200302 if (pc->c[0] == GPCMD_READ_10 || pc->c[0] == GPCMD_WRITE_10 ||
303 (pc->rq && blk_pc_request(pc->rq)))
304 uptodate = 1; /* FIXME */
305 else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
306 u8 *buf = floppy->pc->buf;
Borislav Petkova6ff2d32008-02-02 19:56:34 +0100307
Borislav Petkov81f49382008-07-15 21:21:56 +0200308 if (!pc->error) {
309 floppy->sense_key = buf[2] & 0x0F;
310 floppy->asc = buf[12];
311 floppy->ascq = buf[13];
312 floppy->progress_indication = buf[15] & 0x80 ?
313 (u16)get_unaligned((u16 *)&buf[16]) : 0x10000;
314
315 if (floppy->failed_pc)
316 debug_log("pc = %x, ", floppy->failed_pc->c[0]);
317
Borislav Petkova6ff2d32008-02-02 19:56:34 +0100318 debug_log("sense key = %x, asc = %x, ascq = %x\n",
Borislav Petkov81f49382008-07-15 21:21:56 +0200319 floppy->sense_key, floppy->asc, floppy->ascq);
320 } else
321 printk(KERN_ERR "Error in REQUEST SENSE itself - "
322 "Aborting request!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
Borislav Petkov81f49382008-07-15 21:21:56 +0200325 idefloppy_end_request(drive, uptodate, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326}
327
Borislav Petkov8e555122008-04-18 00:46:27 +0200328static void idefloppy_init_pc(struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329{
Borislav Petkov68dc3572008-07-16 20:33:47 +0200330 memset(pc, 0, sizeof(*pc));
Borislav Petkov8e555122008-04-18 00:46:27 +0200331 pc->buf = pc->pc_buf;
332 pc->buf_size = IDEFLOPPY_PC_BUFFER_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333}
334
Borislav Petkov8e555122008-04-18 00:46:27 +0200335static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336{
Borislav Petkov30d67092008-02-02 19:56:33 +0100337 idefloppy_init_pc(pc);
338 pc->c[0] = GPCMD_REQUEST_SENSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 pc->c[4] = 255;
Borislav Petkov8e555122008-04-18 00:46:27 +0200340 pc->req_xfer = 18;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341}
342
343/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100344 * Called when an error was detected during the last packet command. We queue a
345 * request sense packet command in the head of the request list.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 */
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100347static void idefloppy_retry_pc(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348{
Bartlomiej Zolnierkiewicz394a4c22008-10-10 22:39:35 +0200349 struct ide_floppy_obj *floppy = drive->driver_data;
350 struct request *rq = &floppy->request_sense_rq;
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200351 struct ide_atapi_pc *pc = &floppy->request_sense_pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352
Bartlomiej Zolnierkiewicz64a57fe2008-02-06 02:57:51 +0100353 (void)ide_read_error(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 idefloppy_create_request_sense_cmd(pc);
355 idefloppy_queue_pc_head(drive, pc, rq);
356}
357
Borislav Petkov0eea6452008-02-02 19:56:36 +0100358/* The usual interrupt handler called during a packet command. */
Paolo Ciarrocchi52d3ccf2008-04-26 17:36:41 +0200359static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360{
361 idefloppy_floppy_t *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362
Bartlomiej Zolnierkiewicz646c0cb2008-07-15 21:22:03 +0200363 return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr,
364 IDEFLOPPY_WAIT_CMD, NULL, idefloppy_update_buffers,
365 idefloppy_retry_pc, NULL, ide_floppy_io_buffers);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366}
367
368/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100369 * What we have here is a classic case of a top half / bottom half interrupt
370 * service routine. In interrupt mode, the device sends an interrupt to signal
371 * that it is ready to receive a packet. However, we need to delay about 2-3
372 * ticks before issuing the packet or we gets in trouble.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 */
Borislav Petkovcbbc4e82008-07-15 21:22:03 +0200374static int idefloppy_transfer_pc(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375{
376 idefloppy_floppy_t *floppy = drive->driver_data;
377
378 /* Send the actual packet */
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200379 drive->hwif->tp_ops->output_data(drive, NULL, floppy->pc->c, 12);
Bartlomiej Zolnierkiewicz9567b342008-04-28 23:44:36 +0200380
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 /* Timeout for the packet command */
382 return IDEFLOPPY_WAIT_CMD;
383}
384
Borislav Petkovcbbc4e82008-07-15 21:22:03 +0200385
386/*
387 * Called as an interrupt (or directly). When the device says it's ready for a
388 * packet, we schedule the packet transfer to occur about 2-3 ticks later in
389 * transfer_pc.
390 */
391static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392{
393 idefloppy_floppy_t *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz6ffb6642008-07-15 21:21:56 +0200394 struct ide_atapi_pc *pc = floppy->pc;
Bartlomiej Zolnierkiewicz0b2eea42008-07-15 21:21:54 +0200395 ide_expiry_t *expiry;
396 unsigned int timeout;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100398 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 * The following delay solves a problem with ATAPI Zip 100 drives
400 * where the Busy flag was apparently being deasserted before the
401 * unit was ready to receive data. This was happening on a
402 * 1200 MHz Athlon system. 10/26/01 25msec is too short,
403 * 40 and 50msec work well. idefloppy_pc_intr will not be actually
404 * used until after the packet is moved in about 50 msec.
405 */
Borislav Petkovea68d272008-07-23 19:56:01 +0200406 if (drive->atapi_flags & IDE_AFLAG_ZIP_DRIVE) {
Bartlomiej Zolnierkiewicz0b2eea42008-07-15 21:21:54 +0200407 timeout = floppy->ticks;
Borislav Petkovcbbc4e82008-07-15 21:22:03 +0200408 expiry = &idefloppy_transfer_pc;
Bartlomiej Zolnierkiewicz0b2eea42008-07-15 21:21:54 +0200409 } else {
410 timeout = IDEFLOPPY_WAIT_CMD;
411 expiry = NULL;
412 }
Borislav Petkov0078df22008-02-02 19:56:33 +0100413
Bartlomiej Zolnierkiewicz594c16d2008-07-15 21:21:58 +0200414 return ide_transfer_pc(drive, pc, idefloppy_pc_intr, timeout, expiry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415}
416
Borislav Petkovd652c132008-02-02 19:56:35 +0100417static void ide_floppy_report_error(idefloppy_floppy_t *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200418 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419{
Borislav Petkovd652c132008-02-02 19:56:35 +0100420 /* supress error messages resulting from Medium not present */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 if (floppy->sense_key == 0x02 &&
422 floppy->asc == 0x3a &&
423 floppy->ascq == 0x00)
Borislav Petkovd652c132008-02-02 19:56:35 +0100424 return;
425
426 printk(KERN_ERR "ide-floppy: %s: I/O error, pc = %2x, key = %2x, "
427 "asc = %2x, ascq = %2x\n",
428 floppy->drive->name, pc->c[0], floppy->sense_key,
429 floppy->asc, floppy->ascq);
430
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431}
432
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100433static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
Borislav Petkov8e555122008-04-18 00:46:27 +0200434 struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435{
436 idefloppy_floppy_t *floppy = drive->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 if (floppy->failed_pc == NULL &&
Borislav Petkov30d67092008-02-02 19:56:33 +0100439 pc->c[0] != GPCMD_REQUEST_SENSE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 floppy->failed_pc = pc;
441 /* Set the current packet command */
442 floppy->pc = pc;
443
Borislav Petkov757ced82008-02-02 19:56:37 +0100444 if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100445 if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
Borislav Petkov757ced82008-02-02 19:56:37 +0100446 ide_floppy_report_error(floppy, pc);
447 /* Giving up */
448 pc->error = IDEFLOPPY_ERROR_GENERAL;
449
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 floppy->failed_pc = NULL;
Borislav Petkov2207fa52008-07-23 19:55:59 +0200451 drive->pc_callback(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 return ide_stopped;
453 }
454
Borislav Petkovbcc77d92008-02-02 19:56:34 +0100455 debug_log("Retry number - %d\n", pc->retries);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456
457 pc->retries++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
Borislav Petkovcbbc4e82008-07-15 21:22:03 +0200459 return ide_issue_pc(drive, pc, idefloppy_start_pc_transfer,
Bartlomiej Zolnierkiewicz6bf16412008-07-15 21:22:00 +0200460 IDEFLOPPY_WAIT_CMD, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461}
462
Borislav Petkov8e555122008-04-18 00:46:27 +0200463static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464{
Borislav Petkovbcc77d92008-02-02 19:56:34 +0100465 debug_log("creating prevent removal command, prevent = %d\n", prevent);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466
467 idefloppy_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100468 pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 pc->c[4] = prevent;
470}
471
Borislav Petkov8e555122008-04-18 00:46:27 +0200472static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473{
474 idefloppy_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100475 pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 pc->c[7] = 255;
477 pc->c[8] = 255;
Borislav Petkov8e555122008-04-18 00:46:27 +0200478 pc->req_xfer = 255;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479}
480
Borislav Petkov8e555122008-04-18 00:46:27 +0200481static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b,
482 int l, int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483{
484 idefloppy_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100485 pc->c[0] = GPCMD_FORMAT_UNIT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 pc->c[1] = 0x17;
487
Borislav Petkov8e555122008-04-18 00:46:27 +0200488 memset(pc->buf, 0, 12);
489 pc->buf[1] = 0xA2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
491
492 if (flags & 1) /* Verify bit on... */
Borislav Petkov8e555122008-04-18 00:46:27 +0200493 pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */
494 pc->buf[3] = 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
Borislav Petkov8e555122008-04-18 00:46:27 +0200496 put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4]));
497 put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8]));
498 pc->buf_size = 12;
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100499 pc->flags |= PC_FLAG_WRITING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500}
501
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100502/* A mode sense command is used to "sense" floppy parameters. */
Borislav Petkov8e555122008-04-18 00:46:27 +0200503static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc,
504 u8 page_code, u8 type)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505{
Borislav Petkov24a5d702008-02-02 19:56:34 +0100506 u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100507
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508 idefloppy_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100509 pc->c[0] = GPCMD_MODE_SENSE_10;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 pc->c[1] = 0;
511 pc->c[2] = page_code + (type << 6);
512
513 switch (page_code) {
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100514 case IDEFLOPPY_CAPABILITIES_PAGE:
515 length += 12;
516 break;
517 case IDEFLOPPY_FLEXIBLE_DISK_PAGE:
518 length += 32;
519 break;
520 default:
521 printk(KERN_ERR "ide-floppy: unsupported page code "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 "in create_mode_sense_cmd\n");
523 }
Borislav Petkov8f622432008-02-02 19:56:33 +0100524 put_unaligned(cpu_to_be16(length), (u16 *) &pc->c[7]);
Borislav Petkov8e555122008-04-18 00:46:27 +0200525 pc->req_xfer = length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526}
527
Borislav Petkov8e555122008-04-18 00:46:27 +0200528static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529{
530 idefloppy_init_pc(pc);
Borislav Petkov30d67092008-02-02 19:56:33 +0100531 pc->c[0] = GPCMD_START_STOP_UNIT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 pc->c[4] = start;
533}
534
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100535static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200536 struct ide_atapi_pc *pc, struct request *rq,
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100537 unsigned long sector)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538{
539 int block = sector / floppy->bs_factor;
540 int blocks = rq->nr_sectors / floppy->bs_factor;
541 int cmd = rq_data_dir(rq);
542
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100543 debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544 block, blocks);
545
546 idefloppy_init_pc(pc);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100547 pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
548 put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
Borislav Petkov8f622432008-02-02 19:56:33 +0100549 put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
Borislav Petkovae7e8dd2008-02-02 19:56:36 +0100550
Borislav Petkov20cd93be2008-07-23 19:56:00 +0200551 memcpy(rq->cmd, pc->c, 12);
552
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 pc->rq = rq;
Borislav Petkovb98b3402008-10-10 22:39:35 +0200554 pc->b_count = 0;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200555 if (rq->cmd_flags & REQ_RW)
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100556 pc->flags |= PC_FLAG_WRITING;
Borislav Petkov8e555122008-04-18 00:46:27 +0200557 pc->buf = NULL;
558 pc->req_xfer = pc->buf_size = blocks * floppy->block_size;
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200559 pc->flags |= PC_FLAG_DMA_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560}
561
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100562static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
Borislav Petkov8e555122008-04-18 00:46:27 +0200563 struct ide_atapi_pc *pc, struct request *rq)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 idefloppy_init_pc(pc);
566 memcpy(pc->c, rq->cmd, sizeof(pc->c));
Jens Axboe3d6392c2007-07-09 12:38:05 +0200567 pc->rq = rq;
Borislav Petkovb98b3402008-10-10 22:39:35 +0200568 pc->b_count = 0;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200569 if (rq->data_len && rq_data_dir(rq) == WRITE)
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100570 pc->flags |= PC_FLAG_WRITING;
Borislav Petkov8e555122008-04-18 00:46:27 +0200571 pc->buf = rq->data;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200572 if (rq->bio)
Bartlomiej Zolnierkiewicz5e331092008-07-15 21:21:56 +0200573 pc->flags |= PC_FLAG_DMA_OK;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200574 /*
575 * possibly problematic, doesn't look like ide-floppy correctly
576 * handled scattered requests if dma fails...
577 */
Borislav Petkov8e555122008-04-18 00:46:27 +0200578 pc->req_xfer = pc->buf_size = rq->data_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579}
580
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100581static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
582 struct request *rq, sector_t block_s)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583{
584 idefloppy_floppy_t *floppy = drive->driver_data;
Borislav Petkovb98b3402008-10-10 22:39:35 +0200585 ide_hwif_t *hwif = drive->hwif;
Borislav Petkov8e555122008-04-18 00:46:27 +0200586 struct ide_atapi_pc *pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 unsigned long block = (unsigned long)block_s;
588
Borislav Petkovb98b3402008-10-10 22:39:35 +0200589 debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n",
590 __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?",
591 rq->cmd[0], rq->cmd_type, rq->errors);
592
593 debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",
594 __func__, (long)rq->sector, rq->nr_sectors,
595 rq->current_nr_sectors);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
597 if (rq->errors >= ERROR_MAX) {
Borislav Petkovd652c132008-02-02 19:56:35 +0100598 if (floppy->failed_pc)
599 ide_floppy_report_error(floppy, floppy->failed_pc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600 else
601 printk(KERN_ERR "ide-floppy: %s: I/O error\n",
602 drive->name);
Borislav Petkovc2b2b292008-04-18 00:46:27 +0200603 idefloppy_end_request(drive, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604 return ide_stopped;
605 }
Jens Axboe4aff5e22006-08-10 08:44:47 +0200606 if (blk_fs_request(rq)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 if (((long)rq->sector % floppy->bs_factor) ||
608 (rq->nr_sectors % floppy->bs_factor)) {
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100609 printk(KERN_ERR "%s: unsupported r/w request size\n",
610 drive->name);
Borislav Petkovc2b2b292008-04-18 00:46:27 +0200611 idefloppy_end_request(drive, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 return ide_stopped;
613 }
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200614 pc = &floppy->queued_pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 idefloppy_create_rw_cmd(floppy, pc, rq, block);
Jens Axboe4aff5e22006-08-10 08:44:47 +0200616 } else if (blk_special_request(rq)) {
Borislav Petkov8e555122008-04-18 00:46:27 +0200617 pc = (struct ide_atapi_pc *) rq->buffer;
Jens Axboe4aff5e22006-08-10 08:44:47 +0200618 } else if (blk_pc_request(rq)) {
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200619 pc = &floppy->queued_pc;
Jens Axboe3d6392c2007-07-09 12:38:05 +0200620 idefloppy_blockpc_cmd(floppy, pc, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 } else {
622 blk_dump_rq_flags(rq,
623 "ide-floppy: unsupported command in queue");
Borislav Petkovc2b2b292008-04-18 00:46:27 +0200624 idefloppy_end_request(drive, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 return ide_stopped;
626 }
627
Borislav Petkovb98b3402008-10-10 22:39:35 +0200628 ide_init_sg_cmd(drive, rq);
629 ide_map_sg(drive, rq);
630
631 pc->sg = hwif->sg_table;
632 pc->sg_cnt = hwif->sg_nents;
633
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 pc->rq = rq;
Bartlomiej Zolnierkiewicz5d418932008-07-15 21:21:57 +0200635
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636 return idefloppy_issue_pc(drive, pc);
637}
638
639/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100640 * Add a special packet command request to the tail of the request queue,
641 * and wait for it to be serviced.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 */
Borislav Petkov8e555122008-04-18 00:46:27 +0200643static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644{
645 struct ide_floppy_obj *floppy = drive->driver_data;
FUJITA Tomonori6fe16232008-07-15 21:21:43 +0200646 struct request *rq;
647 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648
FUJITA Tomonori6fe16232008-07-15 21:21:43 +0200649 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
650 rq->buffer = (char *) pc;
651 rq->cmd_type = REQ_TYPE_SPECIAL;
Borislav Petkov20cd93be2008-07-23 19:56:00 +0200652 memcpy(rq->cmd, pc->c, 12);
FUJITA Tomonori6fe16232008-07-15 21:21:43 +0200653 error = blk_execute_rq(drive->queue, floppy->disk, rq, 0);
654 blk_put_request(rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655
FUJITA Tomonori6fe16232008-07-15 21:21:43 +0200656 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657}
658
659/*
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100660 * Look at the flexible disk page parameters. We ignore the CHS capacity
661 * parameters and use the LBA parameters instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 */
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100663static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664{
665 idefloppy_floppy_t *floppy = drive->driver_data;
Borislav Petkov8e555122008-04-18 00:46:27 +0200666 struct ide_atapi_pc pc;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100667 u8 *page;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 int capacity, lba_capacity;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100669 u16 transfer_rate, sector_size, cyls, rpm;
670 u8 heads, sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100672 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE,
673 MODE_SENSE_CURRENT);
674
675 if (idefloppy_queue_pc_tail(drive, &pc)) {
676 printk(KERN_ERR "ide-floppy: Can't get flexible disk page"
677 " parameters\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 return 1;
679 }
Borislav Petkov8e555122008-04-18 00:46:27 +0200680 floppy->wp = !!(pc.buf[3] & 0x80);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 set_disk_ro(floppy->disk, floppy->wp);
Borislav Petkov8e555122008-04-18 00:46:27 +0200682 page = &pc.buf[8];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683
Harvey Harrison85ae98a32008-07-16 20:33:47 +0200684 transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]);
685 sector_size = be16_to_cpup((__be16 *)&pc.buf[8 + 6]);
686 cyls = be16_to_cpup((__be16 *)&pc.buf[8 + 8]);
687 rpm = be16_to_cpup((__be16 *)&pc.buf[8 + 28]);
Borislav Petkov8e555122008-04-18 00:46:27 +0200688 heads = pc.buf[8 + 4];
689 sectors = pc.buf[8 + 5];
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100690
691 capacity = cyls * heads * sectors * sector_size;
692
693 if (memcmp(page, &floppy->flexible_disk_page, 32))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 printk(KERN_INFO "%s: %dkB, %d/%d/%d CHS, %d kBps, "
695 "%d sector size, %d rpm\n",
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100696 drive->name, capacity / 1024, cyls, heads,
697 sectors, transfer_rate / 8, sector_size, rpm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100699 memcpy(&floppy->flexible_disk_page, page, 32);
700 drive->bios_cyl = cyls;
701 drive->bios_head = heads;
702 drive->bios_sect = sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 lba_capacity = floppy->blocks * floppy->block_size;
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100704
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 if (capacity < lba_capacity) {
706 printk(KERN_NOTICE "%s: The disk reports a capacity of %d "
707 "bytes, but the drive only handles %d\n",
708 drive->name, lba_capacity, capacity);
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100709 floppy->blocks = floppy->block_size ?
710 capacity / floppy->block_size : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711 }
712 return 0;
713}
714
Borislav Petkov948391d2008-02-02 19:56:34 +0100715static int idefloppy_get_sfrp_bit(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716{
717 idefloppy_floppy_t *floppy = drive->driver_data;
Borislav Petkov8e555122008-04-18 00:46:27 +0200718 struct ide_atapi_pc pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719
720 floppy->srfp = 0;
721 idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE,
722 MODE_SENSE_CURRENT);
723
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +0100724 pc.flags |= PC_FLAG_SUPPRESS_ERROR;
Borislav Petkov948391d2008-02-02 19:56:34 +0100725 if (idefloppy_queue_pc_tail(drive, &pc))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727
Borislav Petkov8e555122008-04-18 00:46:27 +0200728 floppy->srfp = pc.buf[8 + 2] & 0x40;
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200729 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730}
731
732/*
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100733 * Determine if a media is present in the floppy drive, and if so, its LBA
734 * capacity.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 */
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100736static int ide_floppy_get_capacity(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737{
738 idefloppy_floppy_t *floppy = drive->driver_data;
Borislav Petkov8e555122008-04-18 00:46:27 +0200739 struct ide_atapi_pc pc;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100740 u8 *cap_desc;
741 u8 header_len, desc_cnt;
742 int i, rc = 1, blocks, length;
743
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 drive->bios_cyl = 0;
745 drive->bios_head = drive->bios_sect = 0;
Alan Coxfdb77da2007-02-17 02:40:20 +0100746 floppy->blocks = 0;
747 floppy->bs_factor = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748 set_capacity(floppy->disk, 0);
749
750 idefloppy_create_read_capacity_cmd(&pc);
751 if (idefloppy_queue_pc_tail(drive, &pc)) {
752 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
753 return 1;
754 }
Borislav Petkov8e555122008-04-18 00:46:27 +0200755 header_len = pc.buf[3];
756 cap_desc = &pc.buf[4];
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100757 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100759 for (i = 0; i < desc_cnt; i++) {
760 unsigned int desc_start = 4 + i*8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761
Harvey Harrison85ae98a32008-07-16 20:33:47 +0200762 blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]);
763 length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100764
765 debug_log("Descriptor %d: %dkB, %d blocks, %d sector size\n",
766 i, blocks * length / 1024, blocks, length);
767
768 if (i)
769 continue;
770 /*
771 * the code below is valid only for the 1st descriptor, ie i=0
772 */
773
Borislav Petkov8e555122008-04-18 00:46:27 +0200774 switch (pc.buf[desc_start + 4] & 0x03) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775 /* Clik! drive returns this instead of CAPACITY_CURRENT */
776 case CAPACITY_UNFORMATTED:
Borislav Petkovea68d272008-07-23 19:56:01 +0200777 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100778 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779 * If it is not a clik drive, break out
780 * (maintains previous driver behaviour)
781 */
782 break;
783 case CAPACITY_CURRENT:
784 /* Normal Zip/LS-120 disks */
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100785 if (memcmp(cap_desc, &floppy->cap_desc, 8))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 printk(KERN_INFO "%s: %dkB, %d blocks, %d "
787 "sector size\n", drive->name,
788 blocks * length / 1024, blocks, length);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100789 memcpy(&floppy->cap_desc, cap_desc, 8);
790
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 if (!length || length % 512) {
792 printk(KERN_NOTICE "%s: %d bytes block size "
793 "not supported\n", drive->name, length);
794 } else {
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100795 floppy->blocks = blocks;
796 floppy->block_size = length;
797 floppy->bs_factor = length / 512;
798 if (floppy->bs_factor != 1)
799 printk(KERN_NOTICE "%s: warning: non "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800 "512 bytes block size not "
801 "fully supported\n",
802 drive->name);
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100803 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 }
805 break;
806 case CAPACITY_NO_CARTRIDGE:
807 /*
808 * This is a KERN_ERR so it appears on screen
809 * for the user to see
810 */
811 printk(KERN_ERR "%s: No disk in drive\n", drive->name);
812 break;
813 case CAPACITY_INVALID:
814 printk(KERN_ERR "%s: Invalid capacity for disk "
815 "in drive\n", drive->name);
816 break;
817 }
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100818 debug_log("Descriptor 0 Code: %d\n",
Borislav Petkov8e555122008-04-18 00:46:27 +0200819 pc.buf[desc_start + 4] & 0x03);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 }
821
822 /* Clik! disk does not support get_flexible_disk_page */
Borislav Petkovea68d272008-07-23 19:56:01 +0200823 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
Borislav Petkov8e81bbb2008-02-02 19:56:35 +0100824 (void) ide_floppy_get_flexible_disk_page(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825
826 set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
827 return rc;
828}
829
830/*
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100831 * Obtain the list of formattable capacities.
832 * Very similar to ide_floppy_get_capacity, except that we push the capacity
833 * descriptors to userland, instead of our own structures.
834 *
835 * Userland gives us the following structure:
836 *
837 * struct idefloppy_format_capacities {
838 * int nformats;
839 * struct {
840 * int nblocks;
841 * int blocksize;
842 * } formats[];
843 * };
844 *
845 * userland initializes nformats to the number of allocated formats[] records.
846 * On exit we set nformats to the number of records we've actually initialized.
847 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100849static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850{
Borislav Petkov8e555122008-04-18 00:46:27 +0200851 struct ide_atapi_pc pc;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100852 u8 header_len, desc_cnt;
853 int i, blocks, length, u_array_size, u_index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854 int __user *argp;
855
856 if (get_user(u_array_size, arg))
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200857 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858
859 if (u_array_size <= 0)
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200860 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861
862 idefloppy_create_read_capacity_cmd(&pc);
863 if (idefloppy_queue_pc_tail(drive, &pc)) {
864 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200865 return -EIO;
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100866 }
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200867
Borislav Petkov8e555122008-04-18 00:46:27 +0200868 header_len = pc.buf[3];
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100869 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870
871 u_index = 0;
872 argp = arg + 1;
873
874 /*
Borislav Petkov194ec0c2008-02-02 19:56:35 +0100875 * We always skip the first capacity descriptor. That's the current
876 * capacity. We are interested in the remaining descriptors, the
877 * formattable capacities.
878 */
879 for (i = 1; i < desc_cnt; i++) {
880 unsigned int desc_start = 4 + i*8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882 if (u_index >= u_array_size)
883 break; /* User-supplied buffer too small */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884
Harvey Harrison85ae98a32008-07-16 20:33:47 +0200885 blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]);
886 length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887
888 if (put_user(blocks, argp))
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200889 return -EFAULT;
890
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891 ++argp;
892
893 if (put_user(length, argp))
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200894 return -EFAULT;
895
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 ++argp;
897
898 ++u_index;
899 }
900
901 if (put_user(u_index, arg))
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200902 return -EFAULT;
903
904 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905}
906
907/*
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100908 * Get ATAPI_FORMAT_UNIT progress indication.
909 *
910 * Userland gives a pointer to an int. The int is set to a progress
911 * indicator 0-65536, with 65536=100%.
912 *
913 * If the drive does not support format progress indication, we just check
914 * the dsc bit, and return either 0 or 65536.
915 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916
Bartlomiej Zolnierkiewiczd56c99e2008-10-10 22:39:34 +0200917static int ide_floppy_get_format_progress(ide_drive_t *drive, int __user *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918{
919 idefloppy_floppy_t *floppy = drive->driver_data;
Borislav Petkov8e555122008-04-18 00:46:27 +0200920 struct ide_atapi_pc pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 int progress_indication = 0x10000;
922
923 if (floppy->srfp) {
924 idefloppy_create_request_sense_cmd(&pc);
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100925 if (idefloppy_queue_pc_tail(drive, &pc))
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200926 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927
928 if (floppy->sense_key == 2 &&
929 floppy->asc == 4 &&
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100930 floppy->ascq == 4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931 progress_indication = floppy->progress_indication;
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100932
933 /* Else assume format_unit has finished, and we're at 0x10000 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 } else {
Bartlomiej Zolnierkiewiczb73c7ee2008-07-23 19:55:52 +0200935 ide_hwif_t *hwif = drive->hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936 unsigned long flags;
Bartlomiej Zolnierkiewicz22c525b2008-01-25 22:17:11 +0100937 u8 stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938
939 local_irq_save(flags);
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200940 stat = hwif->tp_ops->read_status(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941 local_irq_restore(flags);
942
Bartlomiej Zolnierkiewicz3a7d2482008-10-10 22:39:21 +0200943 progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945
Bartlomiej Zolnierkiewicze3faa242008-10-10 22:39:34 +0200946 if (put_user(progress_indication, arg))
947 return -EFAULT;
948
949 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950}
951
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100952static sector_t idefloppy_capacity(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953{
954 idefloppy_floppy_t *floppy = drive->driver_data;
955 unsigned long capacity = floppy->blocks * floppy->bs_factor;
956
957 return capacity;
958}
959
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200960#ifdef CONFIG_IDE_PROC_FS
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200961ide_devset_rw(bios_cyl, 0, 1023, bios_cyl);
962ide_devset_rw(bios_head, 0, 255, bios_head);
963ide_devset_rw(bios_sect, 0, 63, bios_sect);
964
965static int get_ticks(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966{
967 idefloppy_floppy_t *floppy = drive->driver_data;
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200968 return floppy->ticks;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969}
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +0200970
971static int set_ticks(ide_drive_t *drive, int arg)
972{
973 idefloppy_floppy_t *floppy = drive->driver_data;
974 floppy->ticks = arg;
975 return 0;
976}
977
978IDE_DEVSET(ticks, S_RW, 0, 255, get_ticks, set_ticks);
979
980static const struct ide_devset *idefloppy_settings[] = {
981 &ide_devset_bios_cyl,
982 &ide_devset_bios_head,
983 &ide_devset_bios_sect,
984 &ide_devset_ticks,
985 NULL
986};
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200987#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988
Borislav Petkov0571c7a2008-02-02 19:56:38 +0100989static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990{
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200991 u16 *id = drive->id;
Borislav Petkov3ad67762008-04-18 00:46:25 +0200992 u8 gcw[2];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200994 *((u16 *)&gcw) = id[ATA_ID_CONFIG];
Bartlomiej Zolnierkiewicz2e8a6f82008-10-10 22:39:36 +0200995
Borislav Petkov2207fa52008-07-23 19:55:59 +0200996 drive->pc_callback = ide_floppy_callback;
Borislav Petkov3ad67762008-04-18 00:46:25 +0200997
998 if (((gcw[0] & 0x60) >> 5) == 1)
Borislav Petkovea68d272008-07-23 19:56:01 +0200999 drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001001 * We used to check revisions here. At this point however I'm giving up.
1002 * Just assume they are all broken, its easier.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003 *
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001004 * The actual reason for the workarounds was likely a driver bug after
1005 * all rather than a firmware bug, and the workaround below used to hide
1006 * it. It should be fixed as of version 1.9, but to be on the safe side
1007 * we'll leave the limitation below for the 2.2.x tree.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001009 if (!strncmp((char *)&id[ATA_ID_PROD], "IOMEGA ZIP 100 ATAPI", 20)) {
Borislav Petkovea68d272008-07-23 19:56:01 +02001010 drive->atapi_flags |= IDE_AFLAG_ZIP_DRIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011 /* This value will be visible in the /proc/ide/hdx/settings */
1012 floppy->ticks = IDEFLOPPY_TICKS_DELAY;
1013 blk_queue_max_sectors(drive->queue, 64);
1014 }
1015
1016 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001017 * Guess what? The IOMEGA Clik! drive also needs the above fix. It makes
1018 * nasty clicking noises without it, so please don't remove this.
1019 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +02001020 if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001021 blk_queue_max_sectors(drive->queue, 64);
Borislav Petkovea68d272008-07-23 19:56:01 +02001022 drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 }
1024
Borislav Petkov194ec0c2008-02-02 19:56:35 +01001025 (void) ide_floppy_get_capacity(drive);
Bartlomiej Zolnierkiewicz1e874f42008-10-10 22:39:27 +02001026
1027 ide_proc_register_driver(drive, floppy->driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028}
1029
Russell King4031bbe2006-01-06 11:41:00 +00001030static void ide_floppy_remove(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031{
1032 idefloppy_floppy_t *floppy = drive->driver_data;
1033 struct gendisk *g = floppy->disk;
1034
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001035 ide_proc_unregister_driver(drive, floppy->driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001036
1037 del_gendisk(g);
1038
1039 ide_floppy_put(floppy);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040}
1041
Borislav Petkov9a24b632008-02-02 19:56:33 +01001042static void idefloppy_cleanup_obj(struct kref *kref)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043{
1044 struct ide_floppy_obj *floppy = to_ide_floppy(kref);
1045 ide_drive_t *drive = floppy->drive;
1046 struct gendisk *g = floppy->disk;
1047
1048 drive->driver_data = NULL;
1049 g->private_data = NULL;
1050 put_disk(g);
1051 kfree(floppy);
1052}
1053
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +02001054#ifdef CONFIG_IDE_PROC_FS
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001055static int proc_idefloppy_read_capacity(char *page, char **start, off_t off,
1056 int count, int *eof, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057{
1058 ide_drive_t*drive = (ide_drive_t *)data;
1059 int len;
1060
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001061 len = sprintf(page, "%llu\n", (long long)idefloppy_capacity(drive));
1062 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063}
1064
1065static ide_proc_entry_t idefloppy_proc[] = {
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001066 { "capacity", S_IFREG|S_IRUGO, proc_idefloppy_read_capacity, NULL },
1067 { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068 { NULL, 0, NULL, NULL }
1069};
Bartlomiej Zolnierkiewiczecfd80e2007-05-10 00:01:09 +02001070#endif /* CONFIG_IDE_PROC_FS */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071
Russell King4031bbe2006-01-06 11:41:00 +00001072static int ide_floppy_probe(ide_drive_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074static ide_driver_t idefloppy_driver = {
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001075 .gen_driver = {
Laurent Riffard4ef3b8f2005-11-18 22:15:40 +01001076 .owner = THIS_MODULE,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001077 .name = "ide-floppy",
1078 .bus = &ide_bus_type,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001079 },
Russell King4031bbe2006-01-06 11:41:00 +00001080 .probe = ide_floppy_probe,
1081 .remove = ide_floppy_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082 .version = IDEFLOPPY_VERSION,
1083 .media = ide_floppy,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084 .do_request = idefloppy_do_request,
Borislav Petkovc2b2b292008-04-18 00:46:27 +02001085 .end_request = idefloppy_end_request,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086 .error = __ide_error,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001087#ifdef CONFIG_IDE_PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088 .proc = idefloppy_proc,
Bartlomiej Zolnierkiewicz8185d5a2008-10-10 22:39:28 +02001089 .settings = idefloppy_settings,
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02001090#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091};
1092
1093static int idefloppy_open(struct inode *inode, struct file *filp)
1094{
1095 struct gendisk *disk = inode->i_bdev->bd_disk;
1096 struct ide_floppy_obj *floppy;
1097 ide_drive_t *drive;
Borislav Petkov8e555122008-04-18 00:46:27 +02001098 struct ide_atapi_pc pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099 int ret = 0;
1100
Borislav Petkovbcc77d92008-02-02 19:56:34 +01001101 debug_log("Reached %s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001103 floppy = ide_floppy_get(disk);
1104 if (!floppy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105 return -ENXIO;
1106
1107 drive = floppy->drive;
1108
Bartlomiej Zolnierkiewiczc94964a2007-02-17 02:40:24 +01001109 floppy->openers++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110
Bartlomiej Zolnierkiewiczc94964a2007-02-17 02:40:24 +01001111 if (floppy->openers == 1) {
Borislav Petkovea68d272008-07-23 19:56:01 +02001112 drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 /* Just in case */
1114
Borislav Petkovc96a7df2008-07-16 20:33:46 +02001115 idefloppy_init_pc(&pc);
1116 pc.c[0] = GPCMD_TEST_UNIT_READY;
1117
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118 if (idefloppy_queue_pc_tail(drive, &pc)) {
1119 idefloppy_create_start_stop_cmd(&pc, 1);
1120 (void) idefloppy_queue_pc_tail(drive, &pc);
1121 }
1122
Borislav Petkov194ec0c2008-02-02 19:56:35 +01001123 if (ide_floppy_get_capacity(drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001124 && (filp->f_flags & O_NDELAY) == 0
1125 /*
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001126 * Allow O_NDELAY to open a drive without a disk, or with an
1127 * unreadable disk, so that we can get the format capacity
1128 * of the drive or begin the format - Sam
1129 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130 ) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131 ret = -EIO;
1132 goto out_put_floppy;
1133 }
1134
1135 if (floppy->wp && (filp->f_mode & 2)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 ret = -EROFS;
1137 goto out_put_floppy;
1138 }
Borislav Petkovea68d272008-07-23 19:56:01 +02001139 drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140 /* IOMEGA Clik! drives do not support lock/unlock commands */
Borislav Petkovea68d272008-07-23 19:56:01 +02001141 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142 idefloppy_create_prevent_cmd(&pc, 1);
1143 (void) idefloppy_queue_pc_tail(drive, &pc);
1144 }
1145 check_disk_change(inode->i_bdev);
Borislav Petkovea68d272008-07-23 19:56:01 +02001146 } else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147 ret = -EBUSY;
1148 goto out_put_floppy;
1149 }
1150 return 0;
1151
1152out_put_floppy:
Bartlomiej Zolnierkiewiczc94964a2007-02-17 02:40:24 +01001153 floppy->openers--;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154 ide_floppy_put(floppy);
1155 return ret;
1156}
1157
1158static int idefloppy_release(struct inode *inode, struct file *filp)
1159{
1160 struct gendisk *disk = inode->i_bdev->bd_disk;
1161 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1162 ide_drive_t *drive = floppy->drive;
Borislav Petkov8e555122008-04-18 00:46:27 +02001163 struct ide_atapi_pc pc;
Borislav Petkovbcc77d92008-02-02 19:56:34 +01001164
1165 debug_log("Reached %s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166
Bartlomiej Zolnierkiewiczc94964a2007-02-17 02:40:24 +01001167 if (floppy->openers == 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001168 /* IOMEGA Clik! drives do not support lock/unlock commands */
Borislav Petkovea68d272008-07-23 19:56:01 +02001169 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170 idefloppy_create_prevent_cmd(&pc, 0);
1171 (void) idefloppy_queue_pc_tail(drive, &pc);
1172 }
1173
Borislav Petkovea68d272008-07-23 19:56:01 +02001174 drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175 }
Bartlomiej Zolnierkiewiczc94964a2007-02-17 02:40:24 +01001176
1177 floppy->openers--;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178
1179 ide_floppy_put(floppy);
1180
1181 return 0;
1182}
1183
Christoph Hellwiga885c8c2006-01-08 01:02:50 -08001184static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
1185{
1186 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1187 ide_drive_t *drive = floppy->drive;
1188
1189 geo->heads = drive->bios_head;
1190 geo->sectors = drive->bios_sect;
1191 geo->cylinders = (u16)drive->bios_cyl; /* truncate */
1192 return 0;
1193}
1194
Borislav Petkovea68d272008-07-23 19:56:01 +02001195static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc,
1196 unsigned long arg, unsigned int cmd)
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001197{
Borislav Petkovea68d272008-07-23 19:56:01 +02001198 idefloppy_floppy_t *floppy = drive->driver_data;
1199
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001200 if (floppy->openers > 1)
1201 return -EBUSY;
1202
1203 /* The IOMEGA Clik! Drive doesn't support this command -
1204 * no room for an eject mechanism */
Borislav Petkovea68d272008-07-23 19:56:01 +02001205 if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001206 int prevent = arg ? 1 : 0;
1207
1208 if (cmd == CDROMEJECT)
1209 prevent = 0;
1210
1211 idefloppy_create_prevent_cmd(pc, prevent);
1212 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1213 }
1214
1215 if (cmd == CDROMEJECT) {
1216 idefloppy_create_start_stop_cmd(pc, 2);
1217 (void) idefloppy_queue_pc_tail(floppy->drive, pc);
1218 }
1219
1220 return 0;
1221}
1222
Bartlomiej Zolnierkiewiczd56c99e2008-10-10 22:39:34 +02001223static int ide_floppy_format_unit(ide_drive_t *drive, int __user *arg)
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001224{
Bartlomiej Zolnierkiewiczd56c99e2008-10-10 22:39:34 +02001225 idefloppy_floppy_t *floppy = drive->driver_data;
Borislav Petkov8e555122008-04-18 00:46:27 +02001226 struct ide_atapi_pc pc;
Borislav Petkovea68d272008-07-23 19:56:01 +02001227 int blocks, length, flags, err = 0;
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001228
1229 if (floppy->openers > 1) {
1230 /* Don't format if someone is using the disk */
Borislav Petkovea68d272008-07-23 19:56:01 +02001231 drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001232 return -EBUSY;
1233 }
1234
Borislav Petkovea68d272008-07-23 19:56:01 +02001235 drive->atapi_flags |= IDE_AFLAG_FORMAT_IN_PROGRESS;
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001236
1237 /*
1238 * Send ATAPI_FORMAT_UNIT to the drive.
1239 *
1240 * Userland gives us the following structure:
1241 *
1242 * struct idefloppy_format_command {
1243 * int nblocks;
1244 * int blocksize;
1245 * int flags;
1246 * } ;
1247 *
1248 * flags is a bitmask, currently, the only defined flag is:
1249 *
1250 * 0x01 - verify media after format.
1251 */
1252 if (get_user(blocks, arg) ||
1253 get_user(length, arg+1) ||
1254 get_user(flags, arg+2)) {
1255 err = -EFAULT;
1256 goto out;
1257 }
1258
Borislav Petkovea68d272008-07-23 19:56:01 +02001259 (void) idefloppy_get_sfrp_bit(drive);
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001260 idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
1261
Borislav Petkovea68d272008-07-23 19:56:01 +02001262 if (idefloppy_queue_pc_tail(drive, &pc))
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001263 err = -EIO;
1264
1265out:
1266 if (err)
Borislav Petkovea68d272008-07-23 19:56:01 +02001267 drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001268 return err;
1269}
1270
Bartlomiej Zolnierkiewiczd56c99e2008-10-10 22:39:34 +02001271static int ide_floppy_format_ioctl(ide_drive_t *drive, struct file *file,
1272 unsigned int cmd, void __user *argp)
1273{
1274 switch (cmd) {
1275 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
1276 return 0;
1277 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
1278 return ide_floppy_get_format_capacities(drive, argp);
1279 case IDEFLOPPY_IOCTL_FORMAT_START:
1280 if (!(file->f_mode & 2))
1281 return -EPERM;
1282 return ide_floppy_format_unit(drive, (int __user *)argp);
1283 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
1284 return ide_floppy_get_format_progress(drive, argp);
1285 default:
1286 return -ENOTTY;
1287 }
1288}
Borislav Petkov20bf7bd2008-02-02 19:56:35 +01001289
Linus Torvalds1da177e2005-04-16 15:20:36 -07001290static int idefloppy_ioctl(struct inode *inode, struct file *file,
1291 unsigned int cmd, unsigned long arg)
1292{
1293 struct block_device *bdev = inode->i_bdev;
1294 struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
1295 ide_drive_t *drive = floppy->drive;
Borislav Petkov8e555122008-04-18 00:46:27 +02001296 struct ide_atapi_pc pc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 void __user *argp = (void __user *)arg;
Ondrej Zary07203f62005-11-10 00:25:15 +01001298 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299
Bartlomiej Zolnierkiewiczd56c99e2008-10-10 22:39:34 +02001300 if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR)
Borislav Petkovea68d272008-07-23 19:56:01 +02001301 return ide_floppy_lockdoor(drive, &pc, arg, cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302
Bartlomiej Zolnierkiewiczd56c99e2008-10-10 22:39:34 +02001303 err = ide_floppy_format_ioctl(drive, file, cmd, argp);
1304 if (err != -ENOTTY)
1305 return err;
Bartlomiej Zolnierkiewicz89636af2007-07-20 01:11:59 +02001306
1307 /*
1308 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
1309 * and CDROM_SEND_PACKET (legacy) ioctls
1310 */
1311 if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
1312 err = scsi_cmd_ioctl(file, bdev->bd_disk->queue,
1313 bdev->bd_disk, cmd, argp);
Bartlomiej Zolnierkiewicz89636af2007-07-20 01:11:59 +02001314
1315 if (err == -ENOTTY)
1316 err = generic_ide_ioctl(drive, file, bdev, cmd, arg);
1317
1318 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319}
1320
1321static int idefloppy_media_changed(struct gendisk *disk)
1322{
1323 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1324 ide_drive_t *drive = floppy->drive;
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +01001325 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326
1327 /* do not scan partitions twice if this is a removable device */
1328 if (drive->attach) {
1329 drive->attach = 0;
1330 return 0;
1331 }
Borislav Petkovea68d272008-07-23 19:56:01 +02001332 ret = !!(drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED);
1333 drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED;
Borislav Petkov6e5fa7b2008-02-02 19:56:37 +01001334 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335}
1336
1337static int idefloppy_revalidate_disk(struct gendisk *disk)
1338{
1339 struct ide_floppy_obj *floppy = ide_floppy_g(disk);
1340 set_capacity(disk, idefloppy_capacity(floppy->drive));
1341 return 0;
1342}
1343
1344static struct block_device_operations idefloppy_ops = {
Paolo Ciarrocchi52d3ccf2008-04-26 17:36:41 +02001345 .owner = THIS_MODULE,
1346 .open = idefloppy_open,
1347 .release = idefloppy_release,
1348 .ioctl = idefloppy_ioctl,
1349 .getgeo = idefloppy_getgeo,
1350 .media_changed = idefloppy_media_changed,
1351 .revalidate_disk = idefloppy_revalidate_disk
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352};
1353
Russell King4031bbe2006-01-06 11:41:00 +00001354static int ide_floppy_probe(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355{
1356 idefloppy_floppy_t *floppy;
1357 struct gendisk *g;
1358
1359 if (!strstr("ide-floppy", drive->driver_req))
1360 goto failed;
Bartlomiej Zolnierkiewicz2a924662008-10-10 22:39:24 +02001361
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362 if (drive->media != ide_floppy)
1363 goto failed;
Bartlomiej Zolnierkiewicz2a924662008-10-10 22:39:24 +02001364
Bartlomiej Zolnierkiewicz51509ee2008-10-10 22:39:34 +02001365 if (!ide_check_atapi_device(drive, DRV_NAME)) {
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001366 printk(KERN_ERR "ide-floppy: %s: not supported by this version"
1367 " of ide-floppy\n", drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368 goto failed;
1369 }
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001370 floppy = kzalloc(sizeof(idefloppy_floppy_t), GFP_KERNEL);
1371 if (!floppy) {
1372 printk(KERN_ERR "ide-floppy: %s: Can't allocate a floppy"
1373 " structure\n", drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001374 goto failed;
1375 }
1376
1377 g = alloc_disk(1 << PARTN_BITS);
1378 if (!g)
1379 goto out_free_floppy;
1380
1381 ide_init_disk(g, drive);
1382
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383 kref_init(&floppy->kref);
1384
1385 floppy->drive = drive;
1386 floppy->driver = &idefloppy_driver;
1387 floppy->disk = g;
1388
1389 g->private_data = &floppy->driver;
1390
1391 drive->driver_data = floppy;
1392
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001393 idefloppy_setup(drive, floppy);
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001394
Linus Torvalds1da177e2005-04-16 15:20:36 -07001395 g->minors = 1 << PARTN_BITS;
1396 g->driverfs_dev = &drive->gendev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397 g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
1398 g->fops = &idefloppy_ops;
1399 drive->attach = 1;
1400 add_disk(g);
1401 return 0;
1402
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403out_free_floppy:
1404 kfree(floppy);
1405failed:
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001406 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407}
1408
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001409static void __exit idefloppy_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001411 driver_unregister(&idefloppy_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412}
1413
Bartlomiej Zolnierkiewicz17514e82005-11-19 22:24:35 +01001414static int __init idefloppy_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001415{
1416 printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001417 return driver_register(&idefloppy_driver.gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418}
1419
Kay Sievers263756e2005-12-12 18:03:44 +01001420MODULE_ALIAS("ide:*m-floppy*");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421module_init(idefloppy_init);
1422module_exit(idefloppy_exit);
1423MODULE_LICENSE("GPL");
Borislav Petkov0571c7a2008-02-02 19:56:38 +01001424MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
1425