#define IDETAPE_BLOCK_DESCRIPTOR 0
#define IDETAPE_CAPABILITIES_PAGE 0x2a
-/* Tape flag bits values. */
-enum {
- IDETAPE_FLAG_IGNORE_DSC = (1 << 0),
- /* 0 When the tape position is unknown */
- IDETAPE_FLAG_ADDRESS_VALID = (1 << 1),
- /* Device already opened */
- IDETAPE_FLAG_BUSY = (1 << 2),
- /* Attempt to auto-detect the current user block size */
- IDETAPE_FLAG_DETECT_BS = (1 << 3),
- /* Currently on a filemark */
- IDETAPE_FLAG_FILEMARK = (1 << 4),
- /* DRQ interrupt device */
- IDETAPE_FLAG_DRQ_INTERRUPT = (1 << 5),
- /* 0 = no tape is loaded, so we don't rewind after ejecting */
- IDETAPE_FLAG_MEDIUM_PRESENT = (1 << 6),
-};
-
/*
* Most of our global data which we need to save even as we leave the driver due
* to an interrupt or a timer event is stored in the struct defined below.
/* Wasted space in each stage */
int excess_bh_size;
- /* Status/Action flags: long for set_bit */
- unsigned long flags;
/* protects the ide-tape queue */
spinlock_t lock;
#define ide_tape_g(disk) \
container_of((disk)->private_data, struct ide_tape_obj, driver)
+static void ide_tape_release(struct kref *);
+
static struct ide_tape_obj *ide_tape_get(struct gendisk *disk)
{
struct ide_tape_obj *tape = NULL;
mutex_lock(&idetape_ref_mutex);
tape = ide_tape_g(disk);
- if (tape)
- kref_get(&tape->kref);
+ if (tape) {
+ if (ide_device_get(tape->drive))
+ tape = NULL;
+ else
+ kref_get(&tape->kref);
+ }
mutex_unlock(&idetape_ref_mutex);
return tape;
}
-static void ide_tape_release(struct kref *);
-
static void ide_tape_put(struct ide_tape_obj *tape)
{
+ ide_drive_t *drive = tape->drive;
+
mutex_lock(&idetape_ref_mutex);
kref_put(&tape->kref, ide_tape_release);
+ ide_device_put(drive);
mutex_unlock(&idetape_ref_mutex);
}
if (readpos[0] & 0x4) {
printk(KERN_INFO "ide-tape: Block location is unknown"
"to the tape\n");
- clear_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags);
+ clear_bit(IDE_AFLAG_ADDRESS_VALID, &drive->atapi_flags);
uptodate = 0;
} else {
debug_log(DBG_SENSE, "Block Location - %u\n",
- be32_to_cpu(*(u32 *)&readpos[4]));
+ be32_to_cpup((__be32 *)&readpos[4]));
tape->partition = readpos[1];
- tape->first_frame = be32_to_cpu(*(u32 *)&readpos[4]);
- set_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags);
+ tape->first_frame = be32_to_cpup((__be32 *)&readpos[4]);
+ set_bit(IDE_AFLAG_ADDRESS_VALID, &drive->atapi_flags);
}
}
rq->cmd_flags |= REQ_PREEMPT;
rq->buffer = (char *) pc;
rq->rq_disk = tape->disk;
+ memcpy(rq->cmd, pc->c, 12);
ide_do_drive_cmd(drive, rq);
}
*/
static void idetape_retry_pc(ide_drive_t *drive)
{
- idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc;
struct request *rq;
pc = idetape_next_pc_storage(drive);
rq = idetape_next_rq_storage(drive);
idetape_create_request_sense_cmd(pc);
- set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags);
+ set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags);
idetape_queue_pc_head(drive, pc, rq);
}
}
static void ide_tape_create_rw_cmd(idetape_tape_t *tape,
- struct ide_atapi_pc *pc, unsigned int length,
- struct idetape_bh *bh, u8 opcode)
+ struct ide_atapi_pc *pc, struct request *rq,
+ u8 opcode)
{
+ struct idetape_bh *bh = (struct idetape_bh *)rq->special;
+ unsigned int length = rq->current_nr_sectors;
+
idetape_init_pc(pc);
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
pc->c[1] = 1;
pc->b_data = bh->b_data;
pc->b_count = atomic_read(&bh->b_count);
}
+
+ memcpy(rq->cmd, pc->c, 12);
}
static ide_startstop_t idetape_do_request(ide_drive_t *drive,
stat = hwif->tp_ops->read_status(hwif);
if (!drive->dsc_overlap && !(rq->cmd[13] & REQ_IDETAPE_PC2))
- set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags);
+ set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags);
if (drive->post_reset == 1) {
- set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags);
+ set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags);
drive->post_reset = 0;
}
- if (!test_and_clear_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags) &&
+ if (!test_and_clear_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags) &&
(stat & SEEK_STAT) == 0) {
if (postponed_rq == NULL) {
tape->dsc_polling_start = jiffies;
}
if (rq->cmd[13] & REQ_IDETAPE_READ) {
pc = idetape_next_pc_storage(drive);
- ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors,
- (struct idetape_bh *)rq->special,
- READ_6);
+ ide_tape_create_rw_cmd(tape, pc, rq, READ_6);
goto out;
}
if (rq->cmd[13] & REQ_IDETAPE_WRITE) {
pc = idetape_next_pc_storage(drive);
- ide_tape_create_rw_cmd(tape, pc, rq->current_nr_sectors,
- (struct idetape_bh *)rq->special,
- WRITE_6);
+ ide_tape_create_rw_cmd(tape, pc, rq, WRITE_6);
goto out;
}
if (rq->cmd[13] & REQ_IDETAPE_PC1) {
return ide_stopped;
}
BUG();
-out:
- if (test_bit(IDETAPE_FLAG_DRQ_INTERRUPT, &tape->flags))
- pc->flags |= PC_FLAG_DRQ_INTERRUPT;
+out:
return idetape_issue_pc(drive, pc);
}
rq->cmd_type = REQ_TYPE_SPECIAL;
rq->cmd[13] = REQ_IDETAPE_PC1;
rq->buffer = (char *)pc;
+ memcpy(rq->cmd, pc->c, 12);
error = blk_execute_rq(drive->queue, tape->disk, rq, 0);
blk_put_request(rq);
return error;
int load_attempted = 0;
/* Wait for the tape to become ready */
- set_bit(IDETAPE_FLAG_MEDIUM_PRESENT, &tape->flags);
+ set_bit(IDE_AFLAG_MEDIUM_PRESENT, &drive->atapi_flags);
timeout += jiffies;
while (time_before(jiffies, timeout)) {
idetape_create_test_unit_ready_cmd(&pc);
if (tape->chrdev_dir != IDETAPE_DIR_READ)
return;
- clear_bit(IDETAPE_FLAG_FILEMARK, &tape->flags);
+ clear_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags);
tape->merge_bh_size = 0;
if (tape->merge_bh != NULL) {
ide_tape_kfree_buffer(tape);
debug_log(DBG_PROCS, "Enter %s, %d blocks\n", __func__, blocks);
/* If we are at a filemark, return a read length of 0 */
- if (test_bit(IDETAPE_FLAG_FILEMARK, &tape->flags))
+ if (test_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags))
return 0;
idetape_init_read(drive);
if (tape->chrdev_dir == IDETAPE_DIR_READ) {
tape->merge_bh_size = 0;
- if (test_and_clear_bit(IDETAPE_FLAG_FILEMARK, &tape->flags))
+ if (test_and_clear_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags))
++count;
ide_tape_discard_merge_buffer(drive, 0);
}
debug_log(DBG_CHRDEV, "Enter %s, count %Zd\n", __func__, count);
if (tape->chrdev_dir != IDETAPE_DIR_READ) {
- if (test_bit(IDETAPE_FLAG_DETECT_BS, &tape->flags))
+ if (test_bit(IDE_AFLAG_DETECT_BS, &drive->atapi_flags))
if (count > tape->blk_size &&
(count % tape->blk_size) == 0)
tape->user_bs_factor = count / tape->blk_size;
tape->merge_bh_size = bytes_read-temp;
}
finish:
- if (!actually_read && test_bit(IDETAPE_FLAG_FILEMARK, &tape->flags)) {
+ if (!actually_read && test_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags)) {
debug_log(DBG_SENSE, "%s: spacing over filemark\n", tape->name);
idetape_space_over_filemarks(drive, MTFSF, 1);
!IDETAPE_LU_LOAD_MASK);
retval = idetape_queue_pc_tail(drive, &pc);
if (!retval)
- clear_bit(IDETAPE_FLAG_MEDIUM_PRESENT, &tape->flags);
+ clear_bit(IDE_AFLAG_MEDIUM_PRESENT, &drive->atapi_flags);
return retval;
case MTNOP:
ide_tape_discard_merge_buffer(drive, 0);
mt_count % tape->blk_size)
return -EIO;
tape->user_bs_factor = mt_count / tape->blk_size;
- clear_bit(IDETAPE_FLAG_DETECT_BS, &tape->flags);
+ clear_bit(IDE_AFLAG_DETECT_BS, &drive->atapi_flags);
} else
- set_bit(IDETAPE_FLAG_DETECT_BS, &tape->flags);
+ set_bit(IDE_AFLAG_DETECT_BS, &drive->atapi_flags);
return 0;
case MTSEEK:
ide_tape_discard_merge_buffer(drive, 0);
filp->private_data = tape;
- if (test_and_set_bit(IDETAPE_FLAG_BUSY, &tape->flags)) {
+ if (test_and_set_bit(IDE_AFLAG_BUSY, &drive->atapi_flags)) {
retval = -EBUSY;
goto out_put_tape;
}
retval = idetape_wait_ready(drive, 60 * HZ);
if (retval) {
- clear_bit(IDETAPE_FLAG_BUSY, &tape->flags);
+ clear_bit(IDE_AFLAG_BUSY, &drive->atapi_flags);
printk(KERN_ERR "ide-tape: %s: drive not ready\n", tape->name);
goto out_put_tape;
}
idetape_read_position(drive);
- if (!test_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags))
+ if (!test_bit(IDE_AFLAG_ADDRESS_VALID, &drive->atapi_flags))
(void)idetape_rewind_tape(drive);
/* Read block size and write protect status from drive. */
if (tape->write_prot) {
if ((filp->f_flags & O_ACCMODE) == O_WRONLY ||
(filp->f_flags & O_ACCMODE) == O_RDWR) {
- clear_bit(IDETAPE_FLAG_BUSY, &tape->flags);
+ clear_bit(IDE_AFLAG_BUSY, &drive->atapi_flags);
retval = -EROFS;
goto out_put_tape;
}
ide_tape_discard_merge_buffer(drive, 1);
}
- if (minor < 128 && test_bit(IDETAPE_FLAG_MEDIUM_PRESENT, &tape->flags))
+ if (minor < 128 && test_bit(IDE_AFLAG_MEDIUM_PRESENT, &drive->atapi_flags))
(void) idetape_rewind_tape(drive);
if (tape->chrdev_dir == IDETAPE_DIR_NONE) {
if (tape->door_locked == DOOR_LOCKED) {
}
}
}
- clear_bit(IDETAPE_FLAG_BUSY, &tape->flags);
+ clear_bit(IDE_AFLAG_BUSY, &drive->atapi_flags);
ide_tape_put(tape);
unlock_kernel();
return 0;
caps = pc.buf + 4 + pc.buf[3];
/* convert to host order and save for later use */
- speed = be16_to_cpu(*(u16 *)&caps[14]);
- max_speed = be16_to_cpu(*(u16 *)&caps[8]);
+ speed = be16_to_cpup((__be16 *)&caps[14]);
+ max_speed = be16_to_cpup((__be16 *)&caps[8]);
- put_unaligned(max_speed, (u16 *)&caps[8]);
- put_unaligned(be16_to_cpu(*(u16 *)&caps[12]), (u16 *)&caps[12]);
- put_unaligned(speed, (u16 *)&caps[14]);
- put_unaligned(be16_to_cpu(*(u16 *)&caps[16]), (u16 *)&caps[16]);
+ *(u16 *)&caps[8] = max_speed;
+ *(u16 *)&caps[12] = be16_to_cpup((__be16 *)&caps[12]);
+ *(u16 *)&caps[14] = speed;
+ *(u16 *)&caps[16] = be16_to_cpup((__be16 *)&caps[16]);
if (!speed) {
printk(KERN_INFO "ide-tape: %s: invalid tape speed "
"(assuming 650KB/sec)\n", drive->name);
- put_unaligned(650, (u16 *)&caps[14]);
+ *(u16 *)&caps[14] = 650;
}
if (!max_speed) {
printk(KERN_INFO "ide-tape: %s: invalid max_speed "
"(assuming 650KB/sec)\n", drive->name);
- put_unaligned(650, (u16 *)&caps[8]);
+ *(u16 *)&caps[8] = 650;
}
memcpy(&tape->caps, caps, 20);
/* Command packet DRQ type */
if (((gcw[0] & 0x60) >> 5) == 1)
- set_bit(IDETAPE_FLAG_DRQ_INTERRUPT, &tape->flags);
+ set_bit(IDE_AFLAG_DRQ_INTERRUPT, &drive->atapi_flags);
idetape_get_inquiry_results(drive);
idetape_get_mode_sense_results(drive);
projects / linux-2.6 / blobdiff