5 #include <linux/hdreg.h>
8 static const struct ide_ioctl_devset ide_ioctl_settings[] = {
9 { HDIO_GET_32BIT, HDIO_SET_32BIT, &ide_devset_io_32bit },
10 { HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, &ide_devset_keepsettings },
11 { HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, &ide_devset_unmaskirq },
12 { HDIO_GET_DMA, HDIO_SET_DMA, &ide_devset_using_dma },
13 { -1, HDIO_SET_PIO_MODE, &ide_devset_pio_mode },
17 int ide_setting_ioctl(ide_drive_t *drive, struct block_device *bdev,
18 unsigned int cmd, unsigned long arg,
19 const struct ide_ioctl_devset *s)
21 const struct ide_devset *ds;
22 int err = -EOPNOTSUPP;
24 for (; (ds = s->setting); s++) {
25 if (ds->get && s->get_ioctl == cmd)
27 else if (ds->set && s->set_ioctl == cmd)
34 mutex_lock(&ide_setting_mtx);
36 mutex_unlock(&ide_setting_mtx);
37 return err >= 0 ? put_user(err, (long __user *)arg) : err;
40 if (bdev != bdev->bd_contains)
43 if (!capable(CAP_SYS_ADMIN))
46 mutex_lock(&ide_setting_mtx);
47 err = ide_devset_execute(drive, ds, arg);
48 mutex_unlock(&ide_setting_mtx);
53 EXPORT_SYMBOL_GPL(ide_setting_ioctl);
55 static int ide_get_identity_ioctl(ide_drive_t *drive, unsigned int cmd,
59 int size = (cmd == HDIO_GET_IDENTITY) ? (ATA_ID_WORDS * 2) : 142;
62 if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) {
67 /* ata_id_to_hd_driveid() relies on 'id' to be fully allocated. */
68 id = kmalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
74 memcpy(id, drive->id, size);
75 ata_id_to_hd_driveid(id);
77 if (copy_to_user((void __user *)arg, id, size))
85 static int ide_get_nice_ioctl(ide_drive_t *drive, unsigned long arg)
87 return put_user((!!(drive->dev_flags & IDE_DFLAG_DSC_OVERLAP)
88 << IDE_NICE_DSC_OVERLAP) |
89 (!!(drive->dev_flags & IDE_DFLAG_NICE1)
90 << IDE_NICE_1), (long __user *)arg);
93 static int ide_set_nice_ioctl(ide_drive_t *drive, unsigned long arg)
95 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
98 if (((arg >> IDE_NICE_DSC_OVERLAP) & 1) &&
99 (drive->media != ide_tape))
102 if ((arg >> IDE_NICE_DSC_OVERLAP) & 1)
103 drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP;
105 drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
107 if ((arg >> IDE_NICE_1) & 1)
108 drive->dev_flags |= IDE_DFLAG_NICE1;
110 drive->dev_flags &= ~IDE_DFLAG_NICE1;
115 static int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg)
118 int bufsize = 0, err = 0;
119 u8 args[4], xfer_rate = 0;
121 struct ide_taskfile *tf = &cmd.tf;
123 if (NULL == (void *) arg) {
126 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
127 rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
128 err = blk_execute_rq(drive->queue, NULL, rq, 0);
134 if (copy_from_user(args, (void __user *)arg, 4))
137 memset(&cmd, 0, sizeof(cmd));
138 tf->feature = args[2];
139 if (args[0] == ATA_CMD_SMART) {
144 cmd.valid.out.tf = IDE_VALID_OUT_TF;
145 cmd.valid.in.tf = IDE_VALID_NSECT;
148 cmd.valid.out.tf = IDE_VALID_FEATURE | IDE_VALID_NSECT;
149 cmd.valid.in.tf = IDE_VALID_NSECT;
151 tf->command = args[0];
152 cmd.protocol = args[3] ? ATA_PROT_PIO : ATA_PROT_NODATA;
155 cmd.tf_flags |= IDE_TFLAG_IO_16BIT;
156 bufsize = SECTOR_SIZE * args[3];
157 buf = kzalloc(bufsize, GFP_KERNEL);
162 if (tf->command == ATA_CMD_SET_FEATURES &&
163 tf->feature == SETFEATURES_XFER &&
164 tf->nsect >= XFER_SW_DMA_0) {
165 xfer_rate = ide_find_dma_mode(drive, XFER_UDMA_6);
166 if (xfer_rate != tf->nsect) {
171 cmd.tf_flags |= IDE_TFLAG_SET_XFER;
174 err = ide_raw_taskfile(drive, &cmd, buf, args[3]);
176 args[0] = tf->status;
180 if (copy_to_user((void __user *)arg, &args, 4))
183 if (copy_to_user((void __user *)(arg + 4), buf, bufsize))
190 static int ide_task_ioctl(ide_drive_t *drive, unsigned long arg)
192 void __user *p = (void __user *)arg;
197 if (copy_from_user(args, p, 7))
200 memset(&cmd, 0, sizeof(cmd));
201 memcpy(&cmd.tf.feature, &args[1], 6);
202 cmd.tf.command = args[0];
203 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
204 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
206 err = ide_no_data_taskfile(drive, &cmd);
208 args[0] = cmd.tf.command;
209 memcpy(&args[1], &cmd.tf.feature, 6);
211 if (copy_to_user(p, args, 7))
217 static int generic_drive_reset(ide_drive_t *drive)
222 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
223 rq->cmd_type = REQ_TYPE_SPECIAL;
225 rq->cmd[0] = REQ_DRIVE_RESET;
226 if (blk_execute_rq(drive->queue, NULL, rq, 1))
232 int generic_ide_ioctl(ide_drive_t *drive, struct block_device *bdev,
233 unsigned int cmd, unsigned long arg)
237 err = ide_setting_ioctl(drive, bdev, cmd, arg, ide_ioctl_settings);
238 if (err != -EOPNOTSUPP)
242 case HDIO_OBSOLETE_IDENTITY:
243 case HDIO_GET_IDENTITY:
244 if (bdev != bdev->bd_contains)
246 return ide_get_identity_ioctl(drive, cmd, arg);
248 return ide_get_nice_ioctl(drive, arg);
250 if (!capable(CAP_SYS_ADMIN))
252 return ide_set_nice_ioctl(drive, arg);
253 #ifdef CONFIG_IDE_TASK_IOCTL
254 case HDIO_DRIVE_TASKFILE:
255 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
257 if (drive->media == ide_disk)
258 return ide_taskfile_ioctl(drive, arg);
262 if (!capable(CAP_SYS_RAWIO))
264 return ide_cmd_ioctl(drive, arg);
265 case HDIO_DRIVE_TASK:
266 if (!capable(CAP_SYS_RAWIO))
268 return ide_task_ioctl(drive, arg);
269 case HDIO_DRIVE_RESET:
270 if (!capable(CAP_SYS_ADMIN))
272 return generic_drive_reset(drive);
273 case HDIO_GET_BUSSTATE:
274 if (!capable(CAP_SYS_ADMIN))
276 if (put_user(BUSSTATE_ON, (long __user *)arg))
279 case HDIO_SET_BUSSTATE:
280 if (!capable(CAP_SYS_ADMIN))
287 EXPORT_SYMBOL(generic_ide_ioctl);