2 * ide-floppy IOCTLs handling.
5 #include <linux/kernel.h>
7 #include <linux/cdrom.h>
9 #include <asm/unaligned.h>
11 #include <scsi/scsi_ioctl.h>
13 #include "ide-floppy.h"
16 * Obtain the list of formattable capacities.
17 * Very similar to ide_floppy_get_capacity, except that we push the capacity
18 * descriptors to userland, instead of our own structures.
20 * Userland gives us the following structure:
22 * struct idefloppy_format_capacities {
30 * userland initializes nformats to the number of allocated formats[] records.
31 * On exit we set nformats to the number of records we've actually initialized.
34 static int ide_floppy_get_format_capacities(ide_drive_t *drive,
35 struct ide_atapi_pc *pc,
38 struct ide_disk_obj *floppy = drive->driver_data;
39 int i, blocks, length, u_array_size, u_index;
41 u8 pc_buf[256], header_len, desc_cnt;
43 if (get_user(u_array_size, arg))
46 if (u_array_size <= 0)
49 ide_floppy_create_read_capacity_cmd(pc);
50 pc->buf_size = sizeof(pc_buf);
52 if (ide_queue_pc_tail(drive, floppy->disk, pc, pc_buf, pc->req_xfer)) {
53 printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
57 header_len = pc_buf[3];
58 desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
64 * We always skip the first capacity descriptor. That's the current
65 * capacity. We are interested in the remaining descriptors, the
66 * formattable capacities.
68 for (i = 1; i < desc_cnt; i++) {
69 unsigned int desc_start = 4 + i*8;
71 if (u_index >= u_array_size)
72 break; /* User-supplied buffer too small */
74 blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
75 length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);
77 if (put_user(blocks, argp))
82 if (put_user(length, argp))
90 if (put_user(u_index, arg))
96 static void ide_floppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b,
100 pc->c[0] = GPCMD_FORMAT_UNIT;
103 memset(pc->buf, 0, 12);
105 /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
107 if (flags & 1) /* Verify bit on... */
108 pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */
111 put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4]));
112 put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8]));
114 pc->flags |= PC_FLAG_WRITING;
117 static int ide_floppy_get_sfrp_bit(ide_drive_t *drive, struct ide_atapi_pc *pc)
119 struct ide_disk_obj *floppy = drive->driver_data;
121 drive->atapi_flags &= ~IDE_AFLAG_SRFP;
123 ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_CAPABILITIES_PAGE);
124 pc->flags |= PC_FLAG_SUPPRESS_ERROR;
126 if (ide_queue_pc_tail(drive, floppy->disk, pc, pc->buf, pc->req_xfer))
129 if (pc->buf[8 + 2] & 0x40)
130 drive->atapi_flags |= IDE_AFLAG_SRFP;
135 static int ide_floppy_format_unit(ide_drive_t *drive, struct ide_atapi_pc *pc,
138 struct ide_disk_obj *floppy = drive->driver_data;
139 int blocks, length, flags, err = 0;
141 if (floppy->openers > 1) {
142 /* Don't format if someone is using the disk */
143 drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
147 drive->dev_flags |= IDE_DFLAG_FORMAT_IN_PROGRESS;
150 * Send ATAPI_FORMAT_UNIT to the drive.
152 * Userland gives us the following structure:
154 * struct idefloppy_format_command {
160 * flags is a bitmask, currently, the only defined flag is:
162 * 0x01 - verify media after format.
164 if (get_user(blocks, arg) ||
165 get_user(length, arg+1) ||
166 get_user(flags, arg+2)) {
171 ide_floppy_get_sfrp_bit(drive, pc);
172 ide_floppy_create_format_unit_cmd(pc, blocks, length, flags);
174 if (ide_queue_pc_tail(drive, floppy->disk, pc, pc->buf, pc->req_xfer))
179 drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
184 * Get ATAPI_FORMAT_UNIT progress indication.
186 * Userland gives a pointer to an int. The int is set to a progress
187 * indicator 0-65536, with 65536=100%.
189 * If the drive does not support format progress indication, we just check
190 * the dsc bit, and return either 0 or 65536.
193 static int ide_floppy_get_format_progress(ide_drive_t *drive,
194 struct ide_atapi_pc *pc,
197 struct ide_disk_obj *floppy = drive->driver_data;
198 int progress_indication = 0x10000;
200 if (drive->atapi_flags & IDE_AFLAG_SRFP) {
201 ide_create_request_sense_cmd(drive, pc);
202 if (ide_queue_pc_tail(drive, floppy->disk, pc, pc->buf,
206 if (floppy->sense_key == 2 &&
209 progress_indication = floppy->progress_indication;
211 /* Else assume format_unit has finished, and we're at 0x10000 */
213 ide_hwif_t *hwif = drive->hwif;
217 local_irq_save(flags);
218 stat = hwif->tp_ops->read_status(hwif);
219 local_irq_restore(flags);
221 progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000;
224 if (put_user(progress_indication, arg))
230 static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc,
231 unsigned long arg, unsigned int cmd)
233 struct ide_disk_obj *floppy = drive->driver_data;
234 struct gendisk *disk = floppy->disk;
235 int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0;
237 if (floppy->openers > 1)
240 ide_set_media_lock(drive, disk, prevent);
242 if (cmd == CDROMEJECT)
243 ide_do_start_stop(drive, disk, 2);
248 static int ide_floppy_format_ioctl(ide_drive_t *drive, struct ide_atapi_pc *pc,
249 fmode_t mode, unsigned int cmd,
253 case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
255 case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
256 return ide_floppy_get_format_capacities(drive, pc, argp);
257 case IDEFLOPPY_IOCTL_FORMAT_START:
258 if (!(mode & FMODE_WRITE))
260 return ide_floppy_format_unit(drive, pc, (int __user *)argp);
261 case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
262 return ide_floppy_get_format_progress(drive, pc, argp);
268 int ide_floppy_ioctl(ide_drive_t *drive, struct block_device *bdev,
269 fmode_t mode, unsigned int cmd, unsigned long arg)
271 struct ide_atapi_pc pc;
272 void __user *argp = (void __user *)arg;
275 if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR)
276 return ide_floppy_lockdoor(drive, &pc, arg, cmd);
278 err = ide_floppy_format_ioctl(drive, &pc, mode, cmd, argp);
283 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
284 * and CDROM_SEND_PACKET (legacy) ioctls
286 if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
287 err = scsi_cmd_ioctl(bdev->bd_disk->queue, bdev->bd_disk,
291 err = generic_ide_ioctl(drive, bdev, cmd, arg);