* The variables below are used for the character device interface. Additional
* state variables are defined in our ide_drive_t structure.
*/
-static struct ide_tape_obj * idetape_devs[MAX_HWIFS * MAX_DRIVES];
+static struct ide_tape_obj *idetape_devs[MAX_HWIFS * MAX_DRIVES];
#define ide_tape_f(file) ((file)->private_data)
return tape;
}
-static int idetape_chrdev_release (struct inode *inode, struct file *filp);
-static void idetape_write_release (ide_drive_t *drive, unsigned int minor);
-
/*
* Too bad. The drive wants to send us data which we are not ready to accept.
* Just throw it away.
*/
-static void idetape_discard_data (ide_drive_t *drive, unsigned int bcount)
+static void idetape_discard_data(ide_drive_t *drive, unsigned int bcount)
{
while (bcount--)
(void) HWIF(drive)->INB(IDE_DATA_REG);
}
-static void idetape_input_buffers (ide_drive_t *drive, idetape_pc_t *pc, unsigned int bcount)
+static void idetape_input_buffers(ide_drive_t *drive, idetape_pc_t *pc,
+ unsigned int bcount)
{
struct idetape_bh *bh = pc->bh;
int count;
idetape_discard_data(drive, bcount);
return;
}
- count = min((unsigned int)(bh->b_size - atomic_read(&bh->b_count)), bcount);
- HWIF(drive)->atapi_input_bytes(drive, bh->b_data + atomic_read(&bh->b_count), count);
+ count = min(
+ (unsigned int)(bh->b_size - atomic_read(&bh->b_count)),
+ bcount);
+ HWIF(drive)->atapi_input_bytes(drive, bh->b_data +
+ atomic_read(&bh->b_count), count);
bcount -= count;
atomic_add(count, &bh->b_count);
if (atomic_read(&bh->b_count) == bh->b_size) {
pc->bh = bh;
}
-static void idetape_output_buffers (ide_drive_t *drive, idetape_pc_t *pc, unsigned int bcount)
+static void idetape_output_buffers(ide_drive_t *drive, idetape_pc_t *pc,
+ unsigned int bcount)
{
struct idetape_bh *bh = pc->bh;
int count;
while (bcount) {
if (bh == NULL) {
- printk(KERN_ERR "ide-tape: bh == NULL in "
- "idetape_output_buffers\n");
+ printk(KERN_ERR "ide-tape: bh == NULL in %s\n",
+ __func__);
return;
}
count = min((unsigned int)pc->b_count, (unsigned int)bcount);
pc->b_data += count;
pc->b_count -= count;
if (!pc->b_count) {
- pc->bh = bh = bh->b_reqnext;
+ bh = bh->b_reqnext;
+ pc->bh = bh;
if (bh) {
pc->b_data = bh->b_data;
pc->b_count = atomic_read(&bh->b_count);
}
}
-static void idetape_update_buffers (idetape_pc_t *pc)
+static void idetape_update_buffers(idetape_pc_t *pc)
{
struct idetape_bh *bh = pc->bh;
int count;
return;
while (bcount) {
if (bh == NULL) {
- printk(KERN_ERR "ide-tape: bh == NULL in "
- "idetape_update_buffers\n");
+ printk(KERN_ERR "ide-tape: bh == NULL in %s\n",
+ __func__);
return;
}
count = min((unsigned int)bh->b_size, (unsigned int)bcount);
* driver. A storage space for a maximum of IDETAPE_PC_STACK packet
* commands is allocated at initialization time.
*/
-static idetape_pc_t *idetape_next_pc_storage (ide_drive_t *drive)
+static idetape_pc_t *idetape_next_pc_storage(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
debug_log(DBG_PCRQ_STACK, "pc_stack_index=%d\n", tape->pc_stack_index);
if (tape->pc_stack_index == IDETAPE_PC_STACK)
- tape->pc_stack_index=0;
+ tape->pc_stack_index = 0;
return (&tape->pc_stack[tape->pc_stack_index++]);
}
* Since we queue packet commands in the request queue, we need to
* allocate a request, along with the allocation of a packet command.
*/
-
+
/**************************************************************
* *
* This should get fixed to use kmalloc(.., GFP_ATOMIC) *
* followed later on by kfree(). -ml *
* *
**************************************************************/
-
-static struct request *idetape_next_rq_storage (ide_drive_t *drive)
+
+static struct request *idetape_next_rq_storage(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
debug_log(DBG_PCRQ_STACK, "rq_stack_index=%d\n", tape->rq_stack_index);
if (tape->rq_stack_index == IDETAPE_PC_STACK)
- tape->rq_stack_index=0;
+ tape->rq_stack_index = 0;
return (&tape->rq_stack[tape->rq_stack_index++]);
}
-static void idetape_init_pc (idetape_pc_t *pc)
+static void idetape_init_pc(idetape_pc_t *pc)
{
memset(pc->c, 0, 12);
pc->retries = 0;
}
/* Free a stage along with its related buffers completely. */
-static void __idetape_kfree_stage (idetape_stage_t *stage)
+static void __idetape_kfree_stage(idetape_stage_t *stage)
{
struct idetape_bh *prev_bh, *bh = stage->bh;
int size;
kfree(stage);
}
-static void idetape_kfree_stage (idetape_tape_t *tape, idetape_stage_t *stage)
+static void idetape_kfree_stage(idetape_tape_t *tape, idetape_stage_t *stage)
{
__idetape_kfree_stage(stage);
}
* Remove tape->first_stage from the pipeline. The caller should avoid race
* conditions.
*/
-static void idetape_remove_stage_head (ide_drive_t *drive)
+static void idetape_remove_stage_head(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
idetape_stage_t *stage;
if (tape->first_stage == NULL) {
tape->last_stage = NULL;
if (tape->next_stage != NULL)
- printk(KERN_ERR "ide-tape: bug: tape->next_stage != NULL\n");
+ printk(KERN_ERR "ide-tape: bug: tape->next_stage !="
+ " NULL\n");
if (tape->nr_stages)
- printk(KERN_ERR "ide-tape: bug: nr_stages should be 0 now\n");
+ printk(KERN_ERR "ide-tape: bug: nr_stages should be 0 "
+ "now\n");
}
}
debug_log(DBG_PROCS, "Enter %s\n", __func__);
switch (uptodate) {
- case 0: error = IDETAPE_ERROR_GENERAL; break;
- case 1: error = 0; break;
- default: error = uptodate;
+ case 0: error = IDETAPE_ERROR_GENERAL; break;
+ case 1: error = 0; break;
+ default: error = uptodate;
}
rq->errors = error;
if (error)
if (error) {
set_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
if (error == IDETAPE_ERROR_EOD)
- idetape_abort_pipeline(drive, active_stage);
+ idetape_abort_pipeline(drive,
+ active_stage);
}
} else if (rq->cmd[0] & REQ_IDETAPE_READ) {
if (error == IDETAPE_ERROR_EOD) {
}
}
ide_end_drive_cmd(drive, 0, 0);
-// blkdev_dequeue_request(rq);
-// drive->rq = NULL;
-// end_that_request_last(rq);
if (remove_stage)
idetape_remove_stage_head(drive);
return 0;
}
-static ide_startstop_t idetape_request_sense_callback (ide_drive_t *drive)
+static ide_startstop_t idetape_request_sense_callback(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
idetape_analyze_error(drive, tape->pc->buffer);
idetape_end_request(drive, 1, 0);
} else {
- printk(KERN_ERR "ide-tape: Error in REQUEST SENSE itself - Aborting request!\n");
+ printk(KERN_ERR "ide-tape: Error in REQUEST SENSE itself - "
+ "Aborting request!\n");
idetape_end_request(drive, 0, 0);
}
return ide_stopped;
}
-static void idetape_create_request_sense_cmd (idetape_pc_t *pc)
+static void idetape_create_request_sense_cmd(idetape_pc_t *pc)
{
- idetape_init_pc(pc);
+ idetape_init_pc(pc);
pc->c[0] = REQUEST_SENSE;
pc->c[4] = 20;
pc->request_transfer = 20;
* handling functions should queue request to the lower level part and wait for
* their completion using idetape_queue_pc_tail or idetape_queue_rw_tail.
*/
-static void idetape_queue_pc_head (ide_drive_t *drive, idetape_pc_t *pc,struct request *rq)
+static void idetape_queue_pc_head(ide_drive_t *drive, idetape_pc_t *pc,
+ struct request *rq)
{
struct ide_tape_obj *tape = drive->driver_data;
* Postpone the current request so that ide.c will be able to service requests
* from another device on the same hwgroup while we are polling for DSC.
*/
-static void idetape_postpone_request (ide_drive_t *drive)
+static void idetape_postpone_request(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
idetape_io_buf *iobuf;
unsigned int temp;
#if SIMULATE_ERRORS
- static int error_sim_count = 0;
+ static int error_sim_count;
#endif
u16 bcount;
u8 stat, ireason;
ide_startstop_t startstop;
u8 ireason;
- if (ide_wait_stat(&startstop,drive,DRQ_STAT,BUSY_STAT,WAIT_READY)) {
- printk(KERN_ERR "ide-tape: Strange, packet command initiated yet DRQ isn't asserted\n");
+ if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) {
+ printk(KERN_ERR "ide-tape: Strange, packet command initiated "
+ "yet DRQ isn't asserted\n");
return startstop;
}
ireason = hwif->INB(IDE_IREASON_REG);
}
}
-static ide_startstop_t idetape_pc_callback (ide_drive_t *drive)
+static ide_startstop_t idetape_pc_callback(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
}
/* A mode sense command is used to "sense" tape parameters. */
-static void idetape_create_mode_sense_cmd (idetape_pc_t *pc, u8 page_code)
+static void idetape_create_mode_sense_cmd(idetape_pc_t *pc, u8 page_code)
{
idetape_init_pc(pc);
pc->c[0] = MODE_SENSE;
{
idetape_tape_t *tape = drive->driver_data;
- if (time_after(jiffies, tape->controlled_pipeline_head_time + 120 * HZ)) {
- tape->controlled_previous_pipeline_head = tape->controlled_last_pipeline_head;
- tape->controlled_previous_head_time = tape->controlled_pipeline_head_time;
+ if (time_after(jiffies,
+ tape->controlled_pipeline_head_time + 120 * HZ)) {
+ tape->controlled_previous_pipeline_head =
+ tape->controlled_last_pipeline_head;
+ tape->controlled_previous_head_time =
+ tape->controlled_pipeline_head_time;
tape->controlled_last_pipeline_head = tape->pipeline_head;
tape->controlled_pipeline_head_time = jiffies;
}
if (time_after(jiffies, tape->controlled_pipeline_head_time + 60 * HZ))
- tape->controlled_pipeline_head_speed = (tape->pipeline_head - tape->controlled_last_pipeline_head) * 32 * HZ / (jiffies - tape->controlled_pipeline_head_time);
+ tape->controlled_pipeline_head_speed = (tape->pipeline_head -
+ tape->controlled_last_pipeline_head) * 32 * HZ /
+ (jiffies - tape->controlled_pipeline_head_time);
else if (time_after(jiffies, tape->controlled_previous_head_time))
- tape->controlled_pipeline_head_speed = (tape->pipeline_head - tape->controlled_previous_pipeline_head) * 32 * HZ / (jiffies - tape->controlled_previous_head_time);
+ tape->controlled_pipeline_head_speed = (tape->pipeline_head -
+ tape->controlled_previous_pipeline_head) * 32 *
+ HZ / (jiffies - tape->controlled_previous_head_time);
- if (tape->nr_pending_stages < tape->max_stages /*- 1 */) {
+ if (tape->nr_pending_stages < tape->max_stages/*- 1 */) {
/* -1 for read mode error recovery */
- if (time_after(jiffies, tape->uncontrolled_previous_head_time + 10 * HZ)) {
+ if (time_after(jiffies, tape->uncontrolled_previous_head_time +
+ 10 * HZ)) {
tape->uncontrolled_pipeline_head_time = jiffies;
- tape->uncontrolled_pipeline_head_speed = (tape->pipeline_head - tape->uncontrolled_previous_pipeline_head) * 32 * HZ / (jiffies - tape->uncontrolled_previous_head_time);
+ tape->uncontrolled_pipeline_head_speed =
+ (tape->pipeline_head -
+ tape->uncontrolled_previous_pipeline_head) *
+ 32 * HZ / (jiffies -
+ tape->uncontrolled_previous_head_time);
}
} else {
tape->uncontrolled_previous_head_time = jiffies;
tape->uncontrolled_previous_pipeline_head = tape->pipeline_head;
- if (time_after(jiffies, tape->uncontrolled_pipeline_head_time + 30 * HZ)) {
+ if (time_after(jiffies, tape->uncontrolled_pipeline_head_time +
+ 30 * HZ))
tape->uncontrolled_pipeline_head_time = jiffies;
- }
+
}
- tape->pipeline_head_speed = max(tape->uncontrolled_pipeline_head_speed, tape->controlled_pipeline_head_speed);
+ tape->pipeline_head_speed = max(tape->uncontrolled_pipeline_head_speed,
+ tape->controlled_pipeline_head_speed);
if (tape->speed_control == 1) {
if (tape->nr_pending_stages >= tape->max_stages / 2)
tape->max_insert_speed = tape->pipeline_head_speed +
- (1100 - tape->pipeline_head_speed) * 2 * (tape->nr_pending_stages - tape->max_stages / 2) / tape->max_stages;
+ (1100 - tape->pipeline_head_speed) * 2 *
+ (tape->nr_pending_stages - tape->max_stages / 2)
+ / tape->max_stages;
else
tape->max_insert_speed = 500 +
- (tape->pipeline_head_speed - 500) * 2 * tape->nr_pending_stages / tape->max_stages;
+ (tape->pipeline_head_speed - 500) * 2 *
+ tape->nr_pending_stages / tape->max_stages;
if (tape->nr_pending_stages >= tape->max_stages * 99 / 100)
tape->max_insert_speed = 5000;
tape->max_insert_speed = max(tape->max_insert_speed, 500);
}
-static ide_startstop_t idetape_media_access_finished (ide_drive_t *drive)
+static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc = tape->pc;
return pc->callback(drive);
}
-static ide_startstop_t idetape_rw_callback (ide_drive_t *drive)
+static ide_startstop_t idetape_rw_callback(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
struct request *rq = HWGROUP(drive)->rq;
tape->insert_size = 0;
}
if (time_after(jiffies, tape->insert_time))
- tape->insert_speed = tape->insert_size / 1024 * HZ / (jiffies - tape->insert_time);
+ tape->insert_speed = tape->insert_size / 1024 * HZ /
+ (jiffies - tape->insert_time);
if (time_after_eq(jiffies, tape->avg_time + HZ)) {
- tape->avg_speed = tape->avg_size * HZ / (jiffies - tape->avg_time) / 1024;
+ tape->avg_speed = tape->avg_size * HZ /
+ (jiffies - tape->avg_time) / 1024;
tape->avg_size = 0;
tape->avg_time = jiffies;
}
return ide_stopped;
}
-static void idetape_create_read_cmd(idetape_tape_t *tape, idetape_pc_t *pc, unsigned int length, struct idetape_bh *bh)
+static void idetape_create_read_cmd(idetape_tape_t *tape, idetape_pc_t *pc,
+ unsigned int length, struct idetape_bh *bh)
{
idetape_init_pc(pc);
pc->c[0] = READ_6;
pc->buffer_size = size;
}
-static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc, unsigned int length, struct idetape_bh *bh)
+static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc,
+ unsigned int length, struct idetape_bh *bh)
{
idetape_init_pc(pc);
pc->c[0] = WRITE_6;
}
/* Retry a failed packet command */
- if (tape->failed_pc != NULL &&
- tape->pc->c[0] == REQUEST_SENSE) {
+ if (tape->failed_pc && tape->pc->c[0] == REQUEST_SENSE)
return idetape_issue_pc(drive, tape->failed_pc);
- }
+
if (postponed_rq != NULL)
if (rq != postponed_rq) {
printk(KERN_ERR "ide-tape: ide-tape.c bug - "
}
if (time_after(jiffies, tape->insert_time))
- tape->insert_speed = tape->insert_size / 1024 * HZ / (jiffies - tape->insert_time);
+ tape->insert_speed = tape->insert_size / 1024 * HZ /
+ (jiffies - tape->insert_time);
idetape_calculate_speeds(drive);
if (!test_and_clear_bit(IDETAPE_IGNORE_DSC, &tape->flags) &&
(stat & SEEK_STAT) == 0) {
} else {
return ide_do_reset(drive);
}
- } else if (time_after(jiffies, tape->dsc_polling_start + IDETAPE_DSC_MA_THRESHOLD))
+ } else if (time_after(jiffies,
+ tape->dsc_polling_start +
+ IDETAPE_DSC_MA_THRESHOLD))
tape->dsc_poll_freq = IDETAPE_DSC_MA_SLOW;
idetape_postpone_request(drive);
return ide_stopped;
tape->buffer_head++;
tape->postpone_cnt = 0;
pc = idetape_next_pc_storage(drive);
- idetape_create_read_cmd(tape, pc, rq->current_nr_sectors, (struct idetape_bh *)rq->special);
+ idetape_create_read_cmd(tape, pc, rq->current_nr_sectors,
+ (struct idetape_bh *)rq->special);
goto out;
}
if (rq->cmd[0] & REQ_IDETAPE_WRITE) {
tape->buffer_head++;
tape->postpone_cnt = 0;
pc = idetape_next_pc_storage(drive);
- idetape_create_write_cmd(tape, pc, rq->current_nr_sectors, (struct idetape_bh *)rq->special);
+ idetape_create_write_cmd(tape, pc, rq->current_nr_sectors,
+ (struct idetape_bh *)rq->special);
goto out;
}
if (rq->cmd[0] & REQ_IDETAPE_READ_BUFFER) {
}
/* Pipeline related functions */
-static inline int idetape_pipeline_active (idetape_tape_t *tape)
+static inline int idetape_pipeline_active(idetape_tape_t *tape)
{
int rc1, rc2;
* Pipeline stages are optional and are used to increase performance. If we
* can't allocate them, we'll manage without them.
*/
-static idetape_stage_t *__idetape_kmalloc_stage (idetape_tape_t *tape, int full, int clear)
+static idetape_stage_t *__idetape_kmalloc_stage(idetape_tape_t *tape, int full,
+ int clear)
{
idetape_stage_t *stage;
struct idetape_bh *prev_bh, *bh;
int pages = tape->pages_per_stage;
char *b_data = NULL;
- if ((stage = kmalloc(sizeof (idetape_stage_t),GFP_KERNEL)) == NULL)
+ stage = kmalloc(sizeof(idetape_stage_t), GFP_KERNEL);
+ if (!stage)
return NULL;
stage->next = NULL;
- bh = stage->bh = kmalloc(sizeof(struct idetape_bh), GFP_KERNEL);
+ stage->bh = kmalloc(sizeof(struct idetape_bh), GFP_KERNEL);
+ bh = stage->bh;
if (bh == NULL)
goto abort;
bh->b_reqnext = NULL;
- if ((bh->b_data = (char *) __get_free_page (GFP_KERNEL)) == NULL)
+ bh->b_data = (char *) __get_free_page(GFP_KERNEL);
+ if (!bh->b_data)
goto abort;
if (clear)
memset(bh->b_data, 0, PAGE_SIZE);
atomic_set(&bh->b_count, full ? bh->b_size : 0);
while (--pages) {
- if ((b_data = (char *) __get_free_page (GFP_KERNEL)) == NULL)
+ b_data = (char *) __get_free_page(GFP_KERNEL);
+ if (!b_data)
goto abort;
if (clear)
memset(b_data, 0, PAGE_SIZE);
continue;
}
prev_bh = bh;
- if ((bh = kmalloc(sizeof(struct idetape_bh), GFP_KERNEL)) == NULL) {
+ bh = kmalloc(sizeof(struct idetape_bh), GFP_KERNEL);
+ if (!bh) {
free_page((unsigned long) b_data);
goto abort;
}
return NULL;
}
-static idetape_stage_t *idetape_kmalloc_stage (idetape_tape_t *tape)
+static idetape_stage_t *idetape_kmalloc_stage(idetape_tape_t *tape)
{
idetape_stage_t *cache_stage = tape->cache_stage;
return __idetape_kmalloc_stage(tape, 0, 0);
}
-static int idetape_copy_stage_from_user (idetape_tape_t *tape, idetape_stage_t *stage, const char __user *buf, int n)
+static int idetape_copy_stage_from_user(idetape_tape_t *tape,
+ idetape_stage_t *stage, const char __user *buf, int n)
{
struct idetape_bh *bh = tape->bh;
int count;
while (n) {
if (bh == NULL) {
- printk(KERN_ERR "ide-tape: bh == NULL in "
- "idetape_copy_stage_from_user\n");
+ printk(KERN_ERR "ide-tape: bh == NULL in %s\n",
+ __func__);
return 1;
}
- count = min((unsigned int)(bh->b_size - atomic_read(&bh->b_count)), (unsigned int)n);
- if (copy_from_user(bh->b_data + atomic_read(&bh->b_count), buf, count))
+ count = min((unsigned int)
+ (bh->b_size - atomic_read(&bh->b_count)),
+ (unsigned int)n);
+ if (copy_from_user(bh->b_data + atomic_read(&bh->b_count), buf,
+ count))
ret = 1;
n -= count;
atomic_add(count, &bh->b_count);
return ret;
}
-static int idetape_copy_stage_to_user (idetape_tape_t *tape, char __user *buf, idetape_stage_t *stage, int n)
+static int idetape_copy_stage_to_user(idetape_tape_t *tape, char __user *buf,
+ idetape_stage_t *stage, int n)
{
struct idetape_bh *bh = tape->bh;
int count;
while (n) {
if (bh == NULL) {
- printk(KERN_ERR "ide-tape: bh == NULL in "
- "idetape_copy_stage_to_user\n");
+ printk(KERN_ERR "ide-tape: bh == NULL in %s\n",
+ __func__);
return 1;
}
count = min(tape->b_count, n);
tape->b_count -= count;
buf += count;
if (!tape->b_count) {
- tape->bh = bh = bh->b_reqnext;
+ bh = bh->b_reqnext;
+ tape->bh = bh;
if (bh) {
tape->b_data = bh->b_data;
tape->b_count = atomic_read(&bh->b_count);
return ret;
}
-static void idetape_init_merge_stage (idetape_tape_t *tape)
+static void idetape_init_merge_stage(idetape_tape_t *tape)
{
struct idetape_bh *bh = tape->merge_stage->bh;
-
+
tape->bh = bh;
if (tape->chrdev_dir == IDETAPE_DIR_WRITE)
atomic_set(&bh->b_count, 0);
}
}
-static void idetape_switch_buffers (idetape_tape_t *tape, idetape_stage_t *stage)
+static void idetape_switch_buffers(idetape_tape_t *tape, idetape_stage_t *stage)
{
struct idetape_bh *tmp;
}
/* Add a new stage at the end of the pipeline. */
-static void idetape_add_stage_tail (ide_drive_t *drive,idetape_stage_t *stage)
+static void idetape_add_stage_tail(ide_drive_t *drive, idetape_stage_t *stage)
{
idetape_tape_t *tape = drive->driver_data;
unsigned long flags;
spin_lock_irqsave(&tape->lock, flags);
stage->next = NULL;
if (tape->last_stage != NULL)
- tape->last_stage->next=stage;
+ tape->last_stage->next = stage;
else
- tape->first_stage = tape->next_stage=stage;
+ tape->first_stage = stage;
+ tape->next_stage = stage;
tape->last_stage = stage;
if (tape->next_stage == NULL)
tape->next_stage = tape->last_stage;
* caller should ensure that the request will not be serviced before we install
* the completion (usually by disabling interrupts).
*/
-static void idetape_wait_for_request (ide_drive_t *drive, struct request *rq)
+static void idetape_wait_for_request(ide_drive_t *drive, struct request *rq)
{
DECLARE_COMPLETION_ONSTACK(wait);
idetape_tape_t *tape = drive->driver_data;
if (rq == NULL || !blk_special_request(rq)) {
- printk (KERN_ERR "ide-tape: bug: Trying to sleep on non-valid request\n");
+ printk(KERN_ERR "ide-tape: bug: Trying to sleep on non-valid"
+ " request\n");
return;
}
rq->end_io_data = &wait;
* Write a filemark if write_filemark=1. Flush the device buffers without
* writing a filemark otherwise.
*/
-static void idetape_create_write_filemark_cmd (ide_drive_t *drive, idetape_pc_t *pc,int write_filemark)
+static void idetape_create_write_filemark_cmd(ide_drive_t *drive,
+ idetape_pc_t *pc, int write_filemark)
{
idetape_init_pc(pc);
pc->c[0] = WRITE_FILEMARKS;
* to the request list without waiting for it to be serviced! In that case, we
* usually use idetape_queue_pc_head().
*/
-static int __idetape_queue_pc_tail (ide_drive_t *drive, idetape_pc_t *pc)
+static int __idetape_queue_pc_tail(ide_drive_t *drive, idetape_pc_t *pc)
{
struct ide_tape_obj *tape = drive->driver_data;
struct request rq;
return ide_do_drive_cmd(drive, &rq, ide_wait);
}
-static void idetape_create_load_unload_cmd (ide_drive_t *drive, idetape_pc_t *pc,int cmd)
+static void idetape_create_load_unload_cmd(ide_drive_t *drive, idetape_pc_t *pc,
+ int cmd)
{
idetape_init_pc(pc);
pc->c[0] = START_STOP;
/* no media */
if (load_attempted)
return -ENOMEDIUM;
- idetape_create_load_unload_cmd(drive, &pc, IDETAPE_LU_LOAD_MASK);
+ idetape_create_load_unload_cmd(drive, &pc,
+ IDETAPE_LU_LOAD_MASK);
__idetape_queue_pc_tail(drive, &pc);
load_attempted = 1;
/* not about to be ready */
return -EIO;
}
-static int idetape_queue_pc_tail (ide_drive_t *drive,idetape_pc_t *pc)
+static int idetape_queue_pc_tail(ide_drive_t *drive, idetape_pc_t *pc)
{
return __idetape_queue_pc_tail(drive, pc);
}
-static int idetape_flush_tape_buffers (ide_drive_t *drive)
+static int idetape_flush_tape_buffers(ide_drive_t *drive)
{
idetape_pc_t pc;
int rc;
idetape_create_write_filemark_cmd(drive, &pc, 0);
- if ((rc = idetape_queue_pc_tail(drive, &pc)))
+ rc = idetape_queue_pc_tail(drive, &pc);
+ if (rc)
return rc;
idetape_wait_ready(drive, 60 * 5 * HZ);
return 0;
}
-static void idetape_create_read_position_cmd (idetape_pc_t *pc)
+static void idetape_create_read_position_cmd(idetape_pc_t *pc)
{
idetape_init_pc(pc);
pc->c[0] = READ_POSITION;
pc->callback = &idetape_read_position_callback;
}
-static int idetape_read_position (ide_drive_t *drive)
+static int idetape_read_position(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t pc;
return position;
}
-static void idetape_create_locate_cmd (ide_drive_t *drive, idetape_pc_t *pc, unsigned int block, u8 partition, int skip)
+static void idetape_create_locate_cmd(ide_drive_t *drive, idetape_pc_t *pc,
+ unsigned int block, u8 partition, int skip)
{
idetape_init_pc(pc);
pc->c[0] = POSITION_TO_ELEMENT;
pc->callback = &idetape_pc_callback;
}
-static int idetape_create_prevent_cmd (ide_drive_t *drive, idetape_pc_t *pc, int prevent)
+static int idetape_create_prevent_cmd(ide_drive_t *drive, idetape_pc_t *pc,
+ int prevent)
{
idetape_tape_t *tape = drive->driver_data;
return 1;
}
-static int __idetape_discard_read_pipeline (ide_drive_t *drive)
+static int __idetape_discard_read_pipeline(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
unsigned long flags;
while (tape->first_stage != NULL) {
struct request *rq_ptr = &tape->first_stage->rq;
- cnt += rq_ptr->nr_sectors - rq_ptr->current_nr_sectors;
+ cnt += rq_ptr->nr_sectors - rq_ptr->current_nr_sectors;
if (rq_ptr->errors == IDETAPE_ERROR_FILEMARK)
++cnt;
idetape_remove_stage_head(drive);
* all higher level operations, we queue the commands at the tail of the request
* queue and wait for their completion.
*/
-static int idetape_position_tape (ide_drive_t *drive, unsigned int block, u8 partition, int skip)
+static int idetape_position_tape(ide_drive_t *drive, unsigned int block,
+ u8 partition, int skip)
{
idetape_tape_t *tape = drive->driver_data;
int retval;
return (idetape_queue_pc_tail(drive, &pc));
}
-static void idetape_discard_read_pipeline (ide_drive_t *drive, int restore_position)
+static void idetape_discard_read_pipeline(ide_drive_t *drive,
+ int restore_position)
{
idetape_tape_t *tape = drive->driver_data;
int cnt;
position = idetape_read_position(drive);
seek = position > cnt ? position - cnt : 0;
if (idetape_position_tape(drive, seek, 0, 0)) {
- printk(KERN_INFO "ide-tape: %s: position_tape failed in discard_pipeline()\n", tape->name);
+ printk(KERN_INFO "ide-tape: %s: position_tape failed in"
+ " discard_pipeline()\n", tape->name);
return;
}
}
* Generate a read/write request for the block device interface and wait for it
* to be serviced.
*/
-static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks, struct idetape_bh *bh)
+static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks,
+ struct idetape_bh *bh)
{
idetape_tape_t *tape = drive->driver_data;
struct request rq;
rq.rq_disk = tape->disk;
rq.special = (void *)bh;
rq.sector = tape->first_frame;
- rq.nr_sectors = rq.current_nr_sectors = blocks;
+ rq.nr_sectors = blocks;
+ rq.current_nr_sectors = blocks;
(void) ide_do_drive_cmd(drive, &rq, ide_wait);
if ((cmd & (REQ_IDETAPE_READ | REQ_IDETAPE_WRITE)) == 0)
}
}
-static void idetape_create_inquiry_cmd (idetape_pc_t *pc)
+static void idetape_create_inquiry_cmd(idetape_pc_t *pc)
{
idetape_init_pc(pc);
pc->c[0] = INQUIRY;
- pc->c[4] = pc->request_transfer = 254;
+ pc->c[4] = 254;
+ pc->request_transfer = 254;
pc->callback = &idetape_pc_callback;
}
-static void idetape_create_rewind_cmd (ide_drive_t *drive, idetape_pc_t *pc)
+static void idetape_create_rewind_cmd(ide_drive_t *drive, idetape_pc_t *pc)
{
idetape_init_pc(pc);
pc->c[0] = REZERO_UNIT;
pc->callback = &idetape_pc_callback;
}
-static void idetape_create_erase_cmd (idetape_pc_t *pc)
+static void idetape_create_erase_cmd(idetape_pc_t *pc)
{
idetape_init_pc(pc);
pc->c[0] = ERASE;
pc->callback = &idetape_pc_callback;
}
-static void idetape_create_space_cmd (idetape_pc_t *pc,int count, u8 cmd)
+static void idetape_create_space_cmd(idetape_pc_t *pc, int count, u8 cmd)
{
idetape_init_pc(pc);
pc->c[0] = SPACE;
pc->callback = &idetape_pc_callback;
}
-static void idetape_wait_first_stage (ide_drive_t *drive)
+static void idetape_wait_first_stage(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
unsigned long flags;
* 3. If we still can't allocate a stage, fallback to non-pipelined operation
* mode for this request.
*/
-static int idetape_add_chrdev_write_request (ide_drive_t *drive, int blocks)
+static int idetape_add_chrdev_write_request(ide_drive_t *drive, int blocks)
{
idetape_tape_t *tape = drive->driver_data;
idetape_stage_t *new_stage;
* The machine is short on memory. Fallback to non-
* pipelined operation mode for this request.
*/
- return idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, blocks, tape->merge_stage->bh);
+ return idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE,
+ blocks, tape->merge_stage->bh);
}
}
rq = &new_stage->rq;
idetape_init_rq(rq, REQ_IDETAPE_WRITE);
/* Doesn't actually matter - We always assume sequential access */
rq->sector = tape->first_frame;
- rq->nr_sectors = rq->current_nr_sectors = blocks;
+ rq->current_nr_sectors = blocks;
+ rq->nr_sectors = blocks;
idetape_switch_buffers(tape, new_stage);
idetape_add_stage_tail(drive, new_stage);
* Wait until all pending pipeline requests are serviced. Typically called on
* device close.
*/
-static void idetape_wait_for_pipeline (ide_drive_t *drive)
+static void idetape_wait_for_pipeline(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
unsigned long flags;
}
}
-static void idetape_empty_write_pipeline (ide_drive_t *drive)
+static void idetape_empty_write_pipeline(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
int blocks, min;
struct idetape_bh *bh;
if (tape->chrdev_dir != IDETAPE_DIR_WRITE) {
- printk(KERN_ERR "ide-tape: bug: Trying to empty write pipeline, but we are not writing.\n");
+ printk(KERN_ERR "ide-tape: bug: Trying to empty write pipeline,"
+ " but we are not writing.\n");
return;
}
if (tape->merge_stage_size > tape->stage_size) {
bh = tape->bh;
while (i) {
if (bh == NULL) {
-
- printk(KERN_INFO "ide-tape: bug, bh NULL\n");
+ printk(KERN_INFO "ide-tape: bug,"
+ " bh NULL\n");
break;
}
- min = min(i, (unsigned int)(bh->b_size - atomic_read(&bh->b_count)));
- memset(bh->b_data + atomic_read(&bh->b_count), 0, min);
+ min = min(i, (unsigned int)(bh->b_size -
+ atomic_read(&bh->b_count)));
+ memset(bh->b_data + atomic_read(&bh->b_count),
+ 0, min);
atomic_add(min, &bh->b_count);
i -= min;
bh = bh->b_reqnext;
}
}
-static void idetape_restart_speed_control (ide_drive_t *drive)
+static void idetape_restart_speed_control(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
tape->restart_speed_control_req = 0;
tape->pipeline_head = 0;
tape->controlled_last_pipeline_head = 0;
- tape->controlled_previous_pipeline_head = tape->uncontrolled_previous_pipeline_head = 0;
- tape->pipeline_head_speed = tape->controlled_pipeline_head_speed = 5000;
+ tape->controlled_previous_pipeline_head = 0;
+ tape->uncontrolled_previous_pipeline_head = 0;
+ tape->controlled_pipeline_head_speed = 5000;
+ tape->pipeline_head_speed = 5000;
tape->uncontrolled_pipeline_head_speed = 0;
- tape->controlled_pipeline_head_time = tape->uncontrolled_pipeline_head_time = jiffies;
- tape->controlled_previous_head_time = tape->uncontrolled_previous_head_time = jiffies;
+ tape->controlled_pipeline_head_time =
+ tape->uncontrolled_pipeline_head_time = jiffies;
+ tape->controlled_previous_head_time =
+ tape->uncontrolled_previous_head_time = jiffies;
}
static int idetape_init_read(ide_drive_t *drive, int max_stages)
idetape_flush_tape_buffers(drive);
}
if (tape->merge_stage || tape->merge_stage_size) {
- printk (KERN_ERR "ide-tape: merge_stage_size should be 0 now\n");
+ printk(KERN_ERR "ide-tape: merge_stage_size should be"
+ " 0 now\n");
tape->merge_stage_size = 0;
}
- if ((tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0)) == NULL)
+ tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0);
+ if (!tape->merge_stage)
return -ENOMEM;
tape->chrdev_dir = IDETAPE_DIR_READ;
* drives (Seagate STT3401A) will return an error.
*/
if (drive->dsc_overlap) {
- bytes_read = idetape_queue_rw_tail(drive, REQ_IDETAPE_READ, 0, tape->merge_stage->bh);
+ bytes_read = idetape_queue_rw_tail(drive,
+ REQ_IDETAPE_READ, 0,
+ tape->merge_stage->bh);
if (bytes_read < 0) {
__idetape_kfree_stage(tape->merge_stage);
tape->merge_stage = NULL;
idetape_restart_speed_control(drive);
idetape_init_rq(&rq, REQ_IDETAPE_READ);
rq.sector = tape->first_frame;
- rq.nr_sectors = rq.current_nr_sectors = blocks;
+ rq.nr_sectors = blocks;
+ rq.current_nr_sectors = blocks;
if (!test_bit(IDETAPE_PIPELINE_ERROR, &tape->flags) &&
tape->nr_stages < max_stages) {
new_stage = idetape_kmalloc_stage(tape);
* Called from idetape_chrdev_read() to service a character device read request
* and add read-ahead requests to our pipeline.
*/
-static int idetape_add_chrdev_read_request (ide_drive_t *drive,int blocks)
+static int idetape_add_chrdev_read_request(ide_drive_t *drive, int blocks)
{
idetape_tape_t *tape = drive->driver_data;
unsigned long flags;
rq_ptr = &tape->first_stage->rq;
bytes_read = tape->blk_size * (rq_ptr->nr_sectors -
rq_ptr->current_nr_sectors);
- rq_ptr->nr_sectors = rq_ptr->current_nr_sectors = 0;
-
+ rq_ptr->nr_sectors = 0;
+ rq_ptr->current_nr_sectors = 0;
if (rq_ptr->errors == IDETAPE_ERROR_EOD)
return 0;
idetape_calculate_speeds(drive);
}
if (bytes_read > blocks * tape->blk_size) {
- printk(KERN_ERR "ide-tape: bug: trying to return more bytes than requested\n");
+ printk(KERN_ERR "ide-tape: bug: trying to return more bytes"
+ " than requested\n");
bytes_read = blocks * tape->blk_size;
}
return (bytes_read);
}
-static void idetape_pad_zeros (ide_drive_t *drive, int bcount)
+static void idetape_pad_zeros(ide_drive_t *drive, int bcount)
{
idetape_tape_t *tape = drive->driver_data;
struct idetape_bh *bh;
bcount -= count;
blocks = count / tape->blk_size;
while (count) {
- atomic_set(&bh->b_count, min(count, (unsigned int)bh->b_size));
+ atomic_set(&bh->b_count,
+ min(count, (unsigned int)bh->b_size));
memset(bh->b_data, 0, atomic_read(&bh->b_count));
count -= atomic_read(&bh->b_count);
bh = bh->b_reqnext;
}
- idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, blocks, tape->merge_stage->bh);
+ idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, blocks,
+ tape->merge_stage->bh);
}
}
-static int idetape_pipeline_size (ide_drive_t *drive)
+static int idetape_pipeline_size(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
idetape_stage_t *stage;
* Rewinds the tape to the Beginning Of the current Partition (BOP). We
* currently support only one partition.
*/
-static int idetape_rewind_tape (ide_drive_t *drive)
+static int idetape_rewind_tape(ide_drive_t *drive)
{
int retval;
idetape_pc_t pc;
}
/* mtio.h compatible commands should be issued to the chrdev interface. */
-static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd, unsigned long arg)
+static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd,
+ unsigned long arg)
{
idetape_tape_t *tape = drive->driver_data;
void __user *argp = (void __user *)arg;
debug_log(DBG_PROCS, "Enter %s\n", __func__);
switch (cmd) {
- case 0x0340:
- if (copy_from_user(&config, argp, sizeof(config)))
- return -EFAULT;
- tape->best_dsc_rw_freq = config.dsc_rw_frequency;
- tape->max_stages = config.nr_stages;
- break;
- case 0x0350:
- config.dsc_rw_frequency = (int) tape->best_dsc_rw_freq;
- config.nr_stages = tape->max_stages;
- if (copy_to_user(argp, &config, sizeof(config)))
- return -EFAULT;
- break;
- default:
- return -EIO;
+ case 0x0340:
+ if (copy_from_user(&config, argp, sizeof(config)))
+ return -EFAULT;
+ tape->best_dsc_rw_freq = config.dsc_rw_frequency;
+ tape->max_stages = config.nr_stages;
+ break;
+ case 0x0350:
+ config.dsc_rw_frequency = (int) tape->best_dsc_rw_freq;
+ config.nr_stages = tape->max_stages;
+ if (copy_to_user(argp, &config, sizeof(config)))
+ return -EFAULT;
+ break;
+ default:
+ return -EIO;
}
return 0;
}
* support MTFSFM when the filemark is in our internal pipeline even if the tape
* doesn't support spacing over filemarks in the reverse direction.
*/
-static int idetape_space_over_filemarks (ide_drive_t *drive,short mt_op,int mt_count)
+static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op,
+ int mt_count)
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t pc;
unsigned long flags;
- int retval,count=0;
+ int retval, count = 0;
int sprev = !!(tape->caps[4] & 0x20);
if (mt_count == 0)
if (MTBSF == mt_op || MTBSFM == mt_op) {
if (!sprev)
return -EIO;
- mt_count = - mt_count;
+ mt_count = -mt_count;
}
if (tape->chrdev_dir == IDETAPE_DIR_READ) {
tape->next_stage = tape->first_stage->next;
} else
spin_unlock_irqrestore(&tape->lock, flags);
- if (tape->first_stage->rq.errors == IDETAPE_ERROR_FILEMARK)
+ if (tape->first_stage->rq.errors ==
+ IDETAPE_ERROR_FILEMARK)
++count;
idetape_remove_stage_head(drive);
}
* the space command.
*/
switch (mt_op) {
- case MTFSF:
- case MTBSF:
- idetape_create_space_cmd(&pc,mt_count-count,IDETAPE_SPACE_OVER_FILEMARK);
- return (idetape_queue_pc_tail(drive, &pc));
- case MTFSFM:
- case MTBSFM:
- if (!sprev)
- return (-EIO);
- retval = idetape_space_over_filemarks(drive, MTFSF, mt_count-count);
- if (retval) return (retval);
- count = (MTBSFM == mt_op ? 1 : -1);
- return (idetape_space_over_filemarks(drive, MTFSF, count));
- default:
- printk(KERN_ERR "ide-tape: MTIO operation %d not supported\n",mt_op);
- return (-EIO);
+ case MTFSF:
+ case MTBSF:
+ idetape_create_space_cmd(&pc, mt_count - count,
+ IDETAPE_SPACE_OVER_FILEMARK);
+ return idetape_queue_pc_tail(drive, &pc);
+ case MTFSFM:
+ case MTBSFM:
+ if (!sprev)
+ return -EIO;
+ retval = idetape_space_over_filemarks(drive, MTFSF,
+ mt_count - count);
+ if (retval)
+ return retval;
+ count = (MTBSFM == mt_op ? 1 : -1);
+ return idetape_space_over_filemarks(drive, MTFSF, count);
+ default:
+ printk(KERN_ERR "ide-tape: MTIO operation %d not supported\n",
+ mt_op);
+ return -EIO;
}
}
-
/*
* Our character device read / write functions.
*
* (slightly) increased driver overhead, but will no longer hit performance.
* This is not applicable to Onstream.
*/
-static ssize_t idetape_chrdev_read (struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
+static ssize_t idetape_chrdev_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
{
struct ide_tape_obj *tape = ide_tape_f(file);
ide_drive_t *drive = tape->drive;
- ssize_t bytes_read,temp, actually_read = 0, rc;
+ ssize_t bytes_read, temp, actually_read = 0, rc;
ssize_t ret = 0;
u16 ctl = *(u16 *)&tape->caps[12];
if (count == 0)
return (0);
if (tape->merge_stage_size) {
- actually_read = min((unsigned int)(tape->merge_stage_size), (unsigned int)count);
- if (idetape_copy_stage_to_user(tape, buf, tape->merge_stage, actually_read))
+ actually_read = min((unsigned int)(tape->merge_stage_size),
+ (unsigned int)count);
+ if (idetape_copy_stage_to_user(tape, buf, tape->merge_stage,
+ actually_read))
ret = -EFAULT;
buf += actually_read;
tape->merge_stage_size -= actually_read;
bytes_read = idetape_add_chrdev_read_request(drive, ctl);
if (bytes_read <= 0)
goto finish;
- if (idetape_copy_stage_to_user(tape, buf, tape->merge_stage, bytes_read))
+ if (idetape_copy_stage_to_user(tape, buf, tape->merge_stage,
+ bytes_read))
ret = -EFAULT;
buf += bytes_read;
count -= bytes_read;
if (bytes_read <= 0)
goto finish;
temp = min((unsigned long)count, (unsigned long)bytes_read);
- if (idetape_copy_stage_to_user(tape, buf, tape->merge_stage, temp))
+ if (idetape_copy_stage_to_user(tape, buf, tape->merge_stage,
+ temp))
ret = -EFAULT;
actually_read += temp;
tape->merge_stage_size = bytes_read-temp;
return 0;
}
- return (ret) ? ret : actually_read;
+ return ret ? ret : actually_read;
}
-static ssize_t idetape_chrdev_write (struct file *file, const char __user *buf,
+static ssize_t idetape_chrdev_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct ide_tape_obj *tape = ide_tape_f(file);
"should be 0 now\n");
tape->merge_stage_size = 0;
}
- if ((tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0)) == NULL)
+ tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0);
+ if (!tape->merge_stage)
return -ENOMEM;
tape->chrdev_dir = IDETAPE_DIR_WRITE;
idetape_init_merge_stage(tape);
* drives (Seagate STT3401A) will return an error.
*/
if (drive->dsc_overlap) {
- ssize_t retval = idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, 0, tape->merge_stage->bh);
+ ssize_t retval = idetape_queue_rw_tail(drive,
+ REQ_IDETAPE_WRITE, 0,
+ tape->merge_stage->bh);
if (retval < 0) {
__idetape_kfree_stage(tape->merge_stage);
tape->merge_stage = NULL;
idetape_restart_speed_control(drive);
if (tape->merge_stage_size) {
if (tape->merge_stage_size >= tape->stage_size) {
- printk(KERN_ERR "ide-tape: bug: merge buffer too big\n");
+ printk(KERN_ERR "ide-tape: bug: merge buf too big\n");
tape->merge_stage_size = 0;
}
- actually_written = min((unsigned int)(tape->stage_size - tape->merge_stage_size), (unsigned int)count);
- if (idetape_copy_stage_from_user(tape, tape->merge_stage, buf, actually_written))
+ actually_written = min((unsigned int)
+ (tape->stage_size - tape->merge_stage_size),
+ (unsigned int)count);
+ if (idetape_copy_stage_from_user(tape, tape->merge_stage, buf,
+ actually_written))
ret = -EFAULT;
buf += actually_written;
tape->merge_stage_size += actually_written;
}
while (count >= tape->stage_size) {
ssize_t retval;
- if (idetape_copy_stage_from_user(tape, tape->merge_stage, buf, tape->stage_size))
+ if (idetape_copy_stage_from_user(tape, tape->merge_stage, buf,
+ tape->stage_size))
ret = -EFAULT;
buf += tape->stage_size;
count -= tape->stage_size;
}
if (count) {
actually_written += count;
- if (idetape_copy_stage_from_user(tape, tape->merge_stage, buf, count))
+ if (idetape_copy_stage_from_user(tape, tape->merge_stage, buf,
+ count))
ret = -EFAULT;
tape->merge_stage_size += count;
}
- return (ret) ? ret : actually_written;
+ return ret ? ret : actually_written;
}
-static int idetape_write_filemark (ide_drive_t *drive)
+static int idetape_write_filemark(ide_drive_t *drive)
{
idetape_pc_t pc;
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t pc;
- int i,retval;
+ int i, retval;
debug_log(DBG_ERR, "Handling MTIOCTOP ioctl: mt_op=%d, mt_count=%d\n",
mt_op, mt_count);
+
/* Commands which need our pipelined read-ahead stages. */
switch (mt_op) {
- case MTFSF:
- case MTFSFM:
- case MTBSF:
- case MTBSFM:
- if (!mt_count)
- return (0);
- return (idetape_space_over_filemarks(drive,mt_op,mt_count));
- default:
- break;
+ case MTFSF:
+ case MTFSFM:
+ case MTBSF:
+ case MTBSFM:
+ if (!mt_count)
+ return 0;
+ return idetape_space_over_filemarks(drive, mt_op, mt_count);
+ default:
+ break;
}
+
switch (mt_op) {
- case MTWEOF:
- if (tape->write_prot)
- return -EACCES;
- idetape_discard_read_pipeline(drive, 1);
- for (i = 0; i < mt_count; i++) {
- retval = idetape_write_filemark(drive);
- if (retval)
- return retval;
- }
- return (0);
- case MTREW:
- idetape_discard_read_pipeline(drive, 0);
- if (idetape_rewind_tape(drive))
+ case MTWEOF:
+ if (tape->write_prot)
+ return -EACCES;
+ idetape_discard_read_pipeline(drive, 1);
+ for (i = 0; i < mt_count; i++) {
+ retval = idetape_write_filemark(drive);
+ if (retval)
+ return retval;
+ }
+ return 0;
+ case MTREW:
+ idetape_discard_read_pipeline(drive, 0);
+ if (idetape_rewind_tape(drive))
+ return -EIO;
+ return 0;
+ case MTLOAD:
+ idetape_discard_read_pipeline(drive, 0);
+ idetape_create_load_unload_cmd(drive, &pc,
+ IDETAPE_LU_LOAD_MASK);
+ return idetape_queue_pc_tail(drive, &pc);
+ case MTUNLOAD:
+ case MTOFFL:
+ /*
+ * If door is locked, attempt to unlock before
+ * attempting to eject.
+ */
+ if (tape->door_locked) {
+ if (idetape_create_prevent_cmd(drive, &pc, 0))
+ if (!idetape_queue_pc_tail(drive, &pc))
+ tape->door_locked = DOOR_UNLOCKED;
+ }
+ idetape_discard_read_pipeline(drive, 0);
+ idetape_create_load_unload_cmd(drive, &pc,
+ !IDETAPE_LU_LOAD_MASK);
+ retval = idetape_queue_pc_tail(drive, &pc);
+ if (!retval)
+ clear_bit(IDETAPE_MEDIUM_PRESENT, &tape->flags);
+ return retval;
+ case MTNOP:
+ idetape_discard_read_pipeline(drive, 0);
+ return idetape_flush_tape_buffers(drive);
+ case MTRETEN:
+ idetape_discard_read_pipeline(drive, 0);
+ idetape_create_load_unload_cmd(drive, &pc,
+ IDETAPE_LU_RETENSION_MASK | IDETAPE_LU_LOAD_MASK);
+ return idetape_queue_pc_tail(drive, &pc);
+ case MTEOM:
+ idetape_create_space_cmd(&pc, 0, IDETAPE_SPACE_TO_EOD);
+ return idetape_queue_pc_tail(drive, &pc);
+ case MTERASE:
+ (void)idetape_rewind_tape(drive);
+ idetape_create_erase_cmd(&pc);
+ return idetape_queue_pc_tail(drive, &pc);
+ case MTSETBLK:
+ if (mt_count) {
+ if (mt_count < tape->blk_size ||
+ mt_count % tape->blk_size)
return -EIO;
+ tape->user_bs_factor = mt_count / tape->blk_size;
+ clear_bit(IDETAPE_DETECT_BS, &tape->flags);
+ } else
+ set_bit(IDETAPE_DETECT_BS, &tape->flags);
+ return 0;
+ case MTSEEK:
+ idetape_discard_read_pipeline(drive, 0);
+ return idetape_position_tape(drive,
+ mt_count * tape->user_bs_factor, tape->partition, 0);
+ case MTSETPART:
+ idetape_discard_read_pipeline(drive, 0);
+ return idetape_position_tape(drive, 0, mt_count, 0);
+ case MTFSR:
+ case MTBSR:
+ case MTLOCK:
+ if (!idetape_create_prevent_cmd(drive, &pc, 1))
return 0;
- case MTLOAD:
- idetape_discard_read_pipeline(drive, 0);
- idetape_create_load_unload_cmd(drive, &pc, IDETAPE_LU_LOAD_MASK);
- return (idetape_queue_pc_tail(drive, &pc));
- case MTUNLOAD:
- case MTOFFL:
- /*
- * If door is locked, attempt to unlock before
- * attempting to eject.
- */
- if (tape->door_locked) {
- if (idetape_create_prevent_cmd(drive, &pc, 0))
- if (!idetape_queue_pc_tail(drive, &pc))
- tape->door_locked = DOOR_UNLOCKED;
- }
- idetape_discard_read_pipeline(drive, 0);
- idetape_create_load_unload_cmd(drive, &pc,!IDETAPE_LU_LOAD_MASK);
- retval = idetape_queue_pc_tail(drive, &pc);
- if (!retval)
- clear_bit(IDETAPE_MEDIUM_PRESENT, &tape->flags);
+ retval = idetape_queue_pc_tail(drive, &pc);
+ if (retval)
return retval;
- case MTNOP:
- idetape_discard_read_pipeline(drive, 0);
- return (idetape_flush_tape_buffers(drive));
- case MTRETEN:
- idetape_discard_read_pipeline(drive, 0);
- idetape_create_load_unload_cmd(drive, &pc,IDETAPE_LU_RETENSION_MASK | IDETAPE_LU_LOAD_MASK);
- return (idetape_queue_pc_tail(drive, &pc));
- case MTEOM:
- idetape_create_space_cmd(&pc, 0, IDETAPE_SPACE_TO_EOD);
- return (idetape_queue_pc_tail(drive, &pc));
- case MTERASE:
- (void) idetape_rewind_tape(drive);
- idetape_create_erase_cmd(&pc);
- return (idetape_queue_pc_tail(drive, &pc));
- case MTSETBLK:
- if (mt_count) {
- if (mt_count < tape->blk_size ||
- mt_count % tape->blk_size)
- return -EIO;
- tape->user_bs_factor = mt_count /
- tape->blk_size;
- clear_bit(IDETAPE_DETECT_BS, &tape->flags);
- } else
- set_bit(IDETAPE_DETECT_BS, &tape->flags);
- return 0;
- case MTSEEK:
- idetape_discard_read_pipeline(drive, 0);
- return idetape_position_tape(drive, mt_count * tape->user_bs_factor, tape->partition, 0);
- case MTSETPART:
- idetape_discard_read_pipeline(drive, 0);
- return (idetape_position_tape(drive, 0, mt_count, 0));
- case MTFSR:
- case MTBSR:
- case MTLOCK:
- if (!idetape_create_prevent_cmd(drive, &pc, 1))
- return 0;
- retval = idetape_queue_pc_tail(drive, &pc);
- if (retval) return retval;
- tape->door_locked = DOOR_EXPLICITLY_LOCKED;
- return 0;
- case MTUNLOCK:
- if (!idetape_create_prevent_cmd(drive, &pc, 0))
- return 0;
- retval = idetape_queue_pc_tail(drive, &pc);
- if (retval) return retval;
- tape->door_locked = DOOR_UNLOCKED;
+ tape->door_locked = DOOR_EXPLICITLY_LOCKED;
+ return 0;
+ case MTUNLOCK:
+ if (!idetape_create_prevent_cmd(drive, &pc, 0))
return 0;
- default:
- printk(KERN_ERR "ide-tape: MTIO operation %d not "
- "supported\n", mt_op);
- return (-EIO);
+ retval = idetape_queue_pc_tail(drive, &pc);
+ if (retval)
+ return retval;
+ tape->door_locked = DOOR_UNLOCKED;
+ return 0;
+ default:
+ printk(KERN_ERR "ide-tape: MTIO operation %d not supported\n",
+ mt_op);
+ return -EIO;
}
}
if (cmd == MTIOCGET || cmd == MTIOCPOS) {
block_offset = idetape_pipeline_size(drive) /
(tape->blk_size * tape->user_bs_factor);
- if ((position = idetape_read_position(drive)) < 0)
+ position = idetape_read_position(drive);
+ if (position < 0)
return -EIO;
}
switch (cmd) {
- case MTIOCTOP:
- if (copy_from_user(&mtop, argp, sizeof (struct mtop)))
- return -EFAULT;
- return (idetape_mtioctop(drive,mtop.mt_op,mtop.mt_count));
- case MTIOCGET:
- memset(&mtget, 0, sizeof (struct mtget));
- mtget.mt_type = MT_ISSCSI2;
- mtget.mt_blkno = position / tape->user_bs_factor - block_offset;
- mtget.mt_dsreg =
- ((tape->blk_size * tape->user_bs_factor)
- << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK;
-
- if (tape->drv_write_prot) {
- mtget.mt_gstat |= GMT_WR_PROT(0xffffffff);
- }
- if (copy_to_user(argp, &mtget, sizeof(struct mtget)))
- return -EFAULT;
- return 0;
- case MTIOCPOS:
- mtpos.mt_blkno = position / tape->user_bs_factor - block_offset;
- if (copy_to_user(argp, &mtpos, sizeof(struct mtpos)))
- return -EFAULT;
- return 0;
- default:
- if (tape->chrdev_dir == IDETAPE_DIR_READ)
- idetape_discard_read_pipeline(drive, 1);
- return idetape_blkdev_ioctl(drive, cmd, arg);
+ case MTIOCTOP:
+ if (copy_from_user(&mtop, argp, sizeof(struct mtop)))
+ return -EFAULT;
+ return idetape_mtioctop(drive, mtop.mt_op, mtop.mt_count);
+ case MTIOCGET:
+ memset(&mtget, 0, sizeof(struct mtget));
+ mtget.mt_type = MT_ISSCSI2;
+ mtget.mt_blkno = position / tape->user_bs_factor - block_offset;
+ mtget.mt_dsreg =
+ ((tape->blk_size * tape->user_bs_factor)
+ << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK;
+
+ if (tape->drv_write_prot)
+ mtget.mt_gstat |= GMT_WR_PROT(0xffffffff);
+
+ if (copy_to_user(argp, &mtget, sizeof(struct mtget)))
+ return -EFAULT;
+ return 0;
+ case MTIOCPOS:
+ mtpos.mt_blkno = position / tape->user_bs_factor - block_offset;
+ if (copy_to_user(argp, &mtpos, sizeof(struct mtpos)))
+ return -EFAULT;
+ return 0;
+ default:
+ if (tape->chrdev_dir == IDETAPE_DIR_READ)
+ idetape_discard_read_pipeline(drive, 1);
+ return idetape_blkdev_ioctl(drive, cmd, arg);
}
}
tape->drv_write_prot = (pc.buffer[2] & 0x80) >> 7;
}
-static int idetape_chrdev_open (struct inode *inode, struct file *filp)
+static int idetape_chrdev_open(struct inode *inode, struct file *filp)
{
unsigned int minor = iminor(inode), i = minor & ~0xc0;
ide_drive_t *drive;
return retval;
}
-static void idetape_write_release (ide_drive_t *drive, unsigned int minor)
+static void idetape_write_release(ide_drive_t *drive, unsigned int minor)
{
idetape_tape_t *tape = drive->driver_data;
idetape_flush_tape_buffers(drive);
}
-static int idetape_chrdev_release (struct inode *inode, struct file *filp)
+static int idetape_chrdev_release(struct inode *inode, struct file *filp)
{
struct ide_tape_obj *tape = ide_tape_f(filp);
ide_drive_t *drive = tape->drive;
* Ask the tape about its various parameters. In particular, we will adjust our
* data transfer buffer size to the recommended value as returned by the tape.
*/
-static void idetape_get_mode_sense_results (ide_drive_t *drive)
+static void idetape_get_mode_sense_results(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t pc;
}
#ifdef CONFIG_IDE_PROC_FS
-static void idetape_add_settings (ide_drive_t *drive)
+static void idetape_add_settings(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
ide_add_setting(drive, "buffer", SETTING_READ, TYPE_SHORT, 0, 0xffff,
1, 2, (u16 *)&tape->caps[16], NULL);
- ide_add_setting(drive, "pipeline_min", SETTING_RW, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->min_pipeline, NULL);
- ide_add_setting(drive, "pipeline", SETTING_RW, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_stages, NULL);
- ide_add_setting(drive, "pipeline_max", SETTING_RW, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_pipeline, NULL);
- ide_add_setting(drive, "pipeline_used", SETTING_READ, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_stages, NULL);
- ide_add_setting(drive, "pipeline_pending", SETTING_READ, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_pending_stages, NULL);
+ ide_add_setting(drive, "pipeline_min", SETTING_RW, TYPE_INT, 1, 0xffff,
+ tape->stage_size / 1024, 1, &tape->min_pipeline, NULL);
+ ide_add_setting(drive, "pipeline", SETTING_RW, TYPE_INT, 1, 0xffff,
+ tape->stage_size / 1024, 1, &tape->max_stages, NULL);
+ ide_add_setting(drive, "pipeline_max", SETTING_RW, TYPE_INT, 1, 0xffff,
+ tape->stage_size / 1024, 1, &tape->max_pipeline, NULL);
+ ide_add_setting(drive, "pipeline_used", SETTING_READ, TYPE_INT, 0,
+ 0xffff, tape->stage_size / 1024, 1, &tape->nr_stages,
+ NULL);
+ ide_add_setting(drive, "pipeline_pending", SETTING_READ, TYPE_INT, 0,
+ 0xffff, tape->stage_size / 1024, 1,
+ &tape->nr_pending_stages, NULL);
ide_add_setting(drive, "speed", SETTING_READ, TYPE_SHORT, 0, 0xffff,
1, 1, (u16 *)&tape->caps[14], NULL);
ide_add_setting(drive, "stage", SETTING_READ, TYPE_INT, 0, 0xffff, 1,
ide_add_setting(drive, "tdsc", SETTING_RW, TYPE_INT, IDETAPE_DSC_RW_MIN,
IDETAPE_DSC_RW_MAX, 1000, HZ, &tape->best_dsc_rw_freq,
NULL);
- ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
- ide_add_setting(drive, "pipeline_head_speed_c",SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1, &tape->controlled_pipeline_head_speed, NULL);
- ide_add_setting(drive, "pipeline_head_speed_u",SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1, &tape->uncontrolled_pipeline_head_speed,NULL);
- ide_add_setting(drive, "avg_speed", SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1, &tape->avg_speed, NULL);
+ ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1,
+ 1, &drive->dsc_overlap, NULL);
+ ide_add_setting(drive, "pipeline_head_speed_c", SETTING_READ, TYPE_INT,
+ 0, 0xffff, 1, 1, &tape->controlled_pipeline_head_speed,
+ NULL);
+ ide_add_setting(drive, "pipeline_head_speed_u", SETTING_READ, TYPE_INT,
+ 0, 0xffff, 1, 1,
+ &tape->uncontrolled_pipeline_head_speed, NULL);
+ ide_add_setting(drive, "avg_speed", SETTING_READ, TYPE_INT, 0, 0xffff,
+ 1, 1, &tape->avg_speed, NULL);
ide_add_setting(drive, "debug_mask", SETTING_RW, TYPE_INT, 0, 0xffff, 1,
1, &tape->debug_mask, NULL);
}
* Note that at this point ide.c already assigned us an irq, so that we can
* queue requests here and wait for their completion.
*/
-static void idetape_setup (ide_drive_t *drive, idetape_tape_t *tape, int minor)
+static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor)
{
unsigned long t1, tmid, tn, t;
int speed;
if (((gcw[0] & 0x60) >> 5) == 1)
set_bit(IDETAPE_DRQ_INTERRUPT, &tape->flags);
- tape->min_pipeline = tape->max_pipeline = tape->max_stages = 10;
+ tape->min_pipeline = 10;
+ tape->max_pipeline = 10;
+ tape->max_stages = 10;
idetape_get_inquiry_results(drive);
idetape_get_mode_sense_results(drive);
/* Limit memory use for pipeline to 10% of physical memory */
si_meminfo(&si);
- if (tape->max_stages * tape->stage_size > si.totalram * si.mem_unit / 10)
- tape->max_stages = si.totalram * si.mem_unit / (10 * tape->stage_size);
+ if (tape->max_stages * tape->stage_size >
+ si.totalram * si.mem_unit / 10)
+ tape->max_stages =
+ si.totalram * si.mem_unit / (10 * tape->stage_size);
+
tape->max_stages = min(tape->max_stages, IDETAPE_MAX_PIPELINE_STAGES);
tape->min_pipeline = min(tape->max_stages, IDETAPE_MIN_PIPELINE_STAGES);
- tape->max_pipeline = min(tape->max_stages * 2, IDETAPE_MAX_PIPELINE_STAGES);
- if (tape->max_stages == 0)
- tape->max_stages = tape->min_pipeline = tape->max_pipeline = 1;
+ tape->max_pipeline =
+ min(tape->max_stages * 2, IDETAPE_MAX_PIPELINE_STAGES);
+ if (tape->max_stages == 0) {
+ tape->max_stages = 1;
+ tape->min_pipeline = 1;
+ tape->max_pipeline = 1;
+ }
t1 = (tape->stage_size * HZ) / (speed * 1000);
tmid = (*(u16 *)&tape->caps[16] * 32 * HZ) / (speed * 125);
drive->dsc_overlap = 0;
drive->driver_data = NULL;
device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor));
- device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor + 128));
+ device_destroy(idetape_sysfs_class,
+ MKDEV(IDETAPE_MAJOR, tape->minor + 128));
idetape_devs[tape->minor] = NULL;
g->private_data = NULL;
put_disk(g);
struct gendisk *disk = inode->i_bdev->bd_disk;
struct ide_tape_obj *tape;
- if (!(tape = ide_tape_get(disk)))
+ tape = ide_tape_get(disk);
+ if (!tape)
return -ENXIO;
return 0;
goto failed;
if (drive->media != ide_tape)
goto failed;
- if (!idetape_identify_device (drive)) {
- printk(KERN_ERR "ide-tape: %s: not supported by this version of ide-tape\n", drive->name);
+ if (!idetape_identify_device(drive)) {
+ printk(KERN_ERR "ide-tape: %s: not supported by this version of"
+ " the driver\n", drive->name);
goto failed;
}
if (drive->scsi) {
- printk("ide-tape: passing drive %s to ide-scsi emulation.\n", drive->name);
+ printk(KERN_INFO "ide-tape: passing drive %s to ide-scsi"
+ " emulation.\n", drive->name);
goto failed;
}
- tape = kzalloc(sizeof (idetape_tape_t), GFP_KERNEL);
+ tape = kzalloc(sizeof(idetape_tape_t), GFP_KERNEL);
if (tape == NULL) {
- printk(KERN_ERR "ide-tape: %s: Can't allocate a tape structure\n", drive->name);
+ printk(KERN_ERR "ide-tape: %s: Can't allocate a tape struct\n",
+ drive->name);
goto failed;
}
return -ENODEV;
}
-static void __exit idetape_exit (void)
+static void __exit idetape_exit(void)
{
driver_unregister(&idetape_driver.gen_driver);
class_destroy(idetape_sysfs_class);
}
if (register_chrdev(IDETAPE_MAJOR, "ht", &idetape_fops)) {
- printk(KERN_ERR "ide-tape: Failed to register character device interface\n");
+ printk(KERN_ERR "ide-tape: Failed to register chrdev"
+ " interface\n");
error = -EBUSY;
goto out_free_class;
}
git.openpandora.org / pandora-kernel.git / commitdiff