1 // SPDX-License-Identifier: GPL-2.0
3  * ide-floppy IOCTLs handling.
16 #include "ide-floppy.h"
38 static int ide_floppy_get_format_capacities(ide_drive_t *drive,  in ide_floppy_get_format_capacities()  argument
42 	struct ide_disk_obj *floppy = drive->driver_data;  in ide_floppy_get_format_capacities()
48 		return -EFAULT;  in ide_floppy_get_format_capacities()
51 		return -EINVAL;  in ide_floppy_get_format_capacities()
55 	if (ide_queue_pc_tail(drive, floppy->disk, pc, pc_buf, pc->req_xfer)) {  in ide_floppy_get_format_capacities()
56 		printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");  in ide_floppy_get_format_capacities()
57 		return -EIO;  in ide_floppy_get_format_capacities()
75 			break;	/* User-supplied buffer too small */  in ide_floppy_get_format_capacities()
81 			return -EFAULT;  in ide_floppy_get_format_capacities()
86 			return -EFAULT;  in ide_floppy_get_format_capacities()
94 		return -EFAULT;  in ide_floppy_get_format_capacities()
104 	pc->c[0] = GPCMD_FORMAT_UNIT;  in ide_floppy_create_format_unit_cmd()
105 	pc->c[1] = 0x17;  in ide_floppy_create_format_unit_cmd()
117 	pc->req_xfer = 12;  in ide_floppy_create_format_unit_cmd()
118 	pc->flags |= PC_FLAG_WRITING;  in ide_floppy_create_format_unit_cmd()
121 static int ide_floppy_get_sfrp_bit(ide_drive_t *drive, struct ide_atapi_pc *pc)  in ide_floppy_get_sfrp_bit()  argument
123 	struct ide_disk_obj *floppy = drive->driver_data;  in ide_floppy_get_sfrp_bit()
126 	drive->atapi_flags &= ~IDE_AFLAG_SRFP;  in ide_floppy_get_sfrp_bit()
129 	pc->flags |= PC_FLAG_SUPPRESS_ERROR;  in ide_floppy_get_sfrp_bit()
131 	if (ide_queue_pc_tail(drive, floppy->disk, pc, buf, pc->req_xfer))  in ide_floppy_get_sfrp_bit()
135 		drive->atapi_flags |= IDE_AFLAG_SRFP;  in ide_floppy_get_sfrp_bit()
140 static int ide_floppy_format_unit(ide_drive_t *drive, struct ide_atapi_pc *pc,  in ide_floppy_format_unit()  argument
143 	struct ide_disk_obj *floppy = drive->driver_data;  in ide_floppy_format_unit()
147 	if (floppy->openers > 1) {  in ide_floppy_format_unit()
149 		drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;  in ide_floppy_format_unit()
150 		return -EBUSY;  in ide_floppy_format_unit()
153 	drive->dev_flags |= IDE_DFLAG_FORMAT_IN_PROGRESS;  in ide_floppy_format_unit()
156 	 * Send ATAPI_FORMAT_UNIT to the drive.  in ide_floppy_format_unit()
168 	 *        0x01 - verify media after format.  in ide_floppy_format_unit()
173 		err = -EFAULT;  in ide_floppy_format_unit()
177 	ide_floppy_get_sfrp_bit(drive, pc);  in ide_floppy_format_unit()
180 	if (ide_queue_pc_tail(drive, floppy->disk, pc, buf, pc->req_xfer))  in ide_floppy_format_unit()
181 		err = -EIO;  in ide_floppy_format_unit()
185 		drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;  in ide_floppy_format_unit()
193  * indicator 0-65536, with 65536=100%.
195  * If the drive does not support format progress indication, we just check
199 static int ide_floppy_get_format_progress(ide_drive_t *drive,  in ide_floppy_get_format_progress()  argument
203 	struct ide_disk_obj *floppy = drive->driver_data;  in ide_floppy_get_format_progress()
207 	if (drive->atapi_flags & IDE_AFLAG_SRFP) {  in ide_floppy_get_format_progress()
208 		ide_create_request_sense_cmd(drive, pc);  in ide_floppy_get_format_progress()
209 		if (ide_queue_pc_tail(drive, floppy->disk, pc, sense_buf,  in ide_floppy_get_format_progress()
210 				      pc->req_xfer))  in ide_floppy_get_format_progress()
211 			return -EIO;  in ide_floppy_get_format_progress()
213 		if (floppy->sense_key == 2 &&  in ide_floppy_get_format_progress()
214 		    floppy->asc == 4 &&  in ide_floppy_get_format_progress()
215 		    floppy->ascq == 4)  in ide_floppy_get_format_progress()
216 			progress_indication = floppy->progress_indication;  in ide_floppy_get_format_progress()
220 		ide_hwif_t *hwif = drive->hwif;  in ide_floppy_get_format_progress()
225 		stat = hwif->tp_ops->read_status(hwif);  in ide_floppy_get_format_progress()
232 		return -EFAULT;  in ide_floppy_get_format_progress()
237 static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc,  in ide_floppy_lockdoor()  argument
240 	struct ide_disk_obj *floppy = drive->driver_data;  in ide_floppy_lockdoor()
241 	struct gendisk *disk = floppy->disk;  in ide_floppy_lockdoor()
244 	if (floppy->openers > 1)  in ide_floppy_lockdoor()
245 		return -EBUSY;  in ide_floppy_lockdoor()
247 	ide_set_media_lock(drive, disk, prevent);  in ide_floppy_lockdoor()
250 		ide_do_start_stop(drive, disk, 2);  in ide_floppy_lockdoor()
255 static int ide_floppy_format_ioctl(ide_drive_t *drive, struct ide_atapi_pc *pc,  in ide_floppy_format_ioctl()  argument
256 				   fmode_t mode, unsigned int cmd,  in ide_floppy_format_ioctl()  argument
263 		return ide_floppy_get_format_capacities(drive, pc, argp);  in ide_floppy_format_ioctl()
265 		if (!(mode & FMODE_WRITE))  in ide_floppy_format_ioctl()
266 			return -EPERM;  in ide_floppy_format_ioctl()
267 		return ide_floppy_format_unit(drive, pc, (int __user *)argp);  in ide_floppy_format_ioctl()
269 		return ide_floppy_get_format_progress(drive, pc, argp);  in ide_floppy_format_ioctl()
271 		return -ENOTTY;  in ide_floppy_format_ioctl()
275 int ide_floppy_ioctl(ide_drive_t *drive, struct block_device *bdev,  in ide_floppy_ioctl()  argument
276 		     fmode_t mode, unsigned int cmd, unsigned long arg)  in ide_floppy_ioctl()  argument
284 		err = ide_floppy_lockdoor(drive, &pc, arg, cmd);  in ide_floppy_ioctl()
288 	err = ide_floppy_format_ioctl(drive, &pc, mode, cmd, argp);  in ide_floppy_ioctl()
289 	if (err != -ENOTTY)  in ide_floppy_ioctl()
297 		err = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);  in ide_floppy_ioctl()
299 	if (err == -ENOTTY)  in ide_floppy_ioctl()
300 		err = generic_ide_ioctl(drive, bdev, cmd, arg);  in ide_floppy_ioctl()
308 int ide_floppy_compat_ioctl(ide_drive_t *drive, struct block_device *bdev,  in ide_floppy_compat_ioctl()  argument
309 			    fmode_t mode, unsigned int cmd, unsigned long arg)  in ide_floppy_compat_ioctl()  argument
317 		err = ide_floppy_lockdoor(drive, &pc, arg, cmd);  in ide_floppy_compat_ioctl()
321 	err = ide_floppy_format_ioctl(drive, &pc, mode, cmd, argp);  in ide_floppy_compat_ioctl()
322 	if (err != -ENOTTY)  in ide_floppy_compat_ioctl()
330 		err = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);  in ide_floppy_compat_ioctl()
332 	if (err == -ENOTTY)  in ide_floppy_compat_ioctl()
333 		err = generic_ide_ioctl(drive, bdev, cmd, arg);  in ide_floppy_compat_ioctl()