From: Borislav Petkov <bbpetkov@xxxxxxxx>
Some member names are self-explanatory, so remove their respective
comments. Also, explain the exact purpose of struct members in comments
in the struct definition instead of using excessively long member names
thus replacing then with a shorter, more handy version.
Finally, remove unused members:
- last_frame_position: only being written to once
- firmware_revision: used once, remove from struct idetape_tape_t and deal with
it locally
- firmware_revision_num: only written to once
- tape_still_time_begin: completely unused
- tape_still_time: never written to; remove corresponding code chunk
- uncontrolled_last_pipeline_head: only once written to
Signed-off-by: Borislav Petkov <bbpetkov@xxxxxxxx>
---
drivers/ide/ide-tape.c | 673 +++++++++++++++++++++++------------------------
1 files changed, 329 insertions(+), 344 deletions(-)
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 4690f71..31edb0c 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -240,9 +240,9 @@ typedef struct idetape_stage_s {
} idetape_stage_t;
/*
- * 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 a variable
- * of type idetape_tape_t, defined below.
+ * 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 a variable of type
+ * idetape_tape_t, defined below.
*/
typedef struct ide_tape_obj {
ide_drive_t *drive;
@@ -251,42 +251,41 @@ typedef struct ide_tape_obj {
struct kref kref;
/*
- * Since a typical character device operation requires more
- * than one packet command, we provide here enough memory
- * for the maximum of interconnected packet commands.
- * The packet commands are stored in the circular array pc_stack.
- * pc_stack_index points to the last used entry, and warps around
- * to the start when we get to the last array entry.
- *
- * pc points to the current processed packet command.
- *
- * failed_pc points to the last failed packet command, or contains
- * NULL if we do not need to retry any packet command. This is
- * required since an additional packet command is needed before the
- * retry, to get detailed information on what went wrong.
+ * Since a typical chrdev operation requires more than one packet
+ * command, we provide here enough memory for the maximum of
+ * interconnected packet commands. The packet commands are stored in the
+ * circular array pc_stack. pc_stack_index points to the last used
+ * entry, and warps around to the start when we get to the last array
+ * entry.
*/
- /* Current packet command */
+
+ /* current packet command */
idetape_pc_t *pc;
- /* Last failed packet command */
+
+ /*
+ * the last failed packet command, or NULL if we do not need to retry
+ * any packet command. This is required since an additional packet
+ * command is needed before the retry, to get detailed information on
+ * what went wrong.
+ */
idetape_pc_t *failed_pc;
- /* Packet command stack */
+
idetape_pc_t pc_stack[IDETAPE_PC_STACK];
/* Next free packet command storage space */
- int pc_stack_index;
+ int pc_stack_idx;
struct request rq_stack[IDETAPE_PC_STACK];
/* We implement a circular array */
- int rq_stack_index;
+ int rq_stack_idx;
/*
- * DSC polling variables.
+ * DSC polling variables.
*
- * While polling for DSC we use postponed_rq to postpone the
- * current request so that ide.c will be able to service
- * pending requests on the other device. Note that at most
- * we will have only one DSC (usually data transfer) request
- * in the device request queue. Additional requests can be
- * queued in our internal pipeline, but they will be visible
- * to ide.c only one at a time.
+ * While polling for DSC we use postponed_rq to postpone the current
+ * request so that ide.c will be able to service pending requests on the
+ * other device. Note that at most we will have only one DSC (usually
+ * data transfer) request in the device request queue. Additional
+ * requests can be queued in our internal pipeline, but they will be
+ * visible to ide.c only one at a time.
*/
struct request *postponed_rq;
/* The time in which we started polling for DSC */
@@ -294,85 +293,67 @@ typedef struct ide_tape_obj {
/* Timer used to poll for dsc */
struct timer_list dsc_timer;
/* Read/Write dsc polling frequency */
- unsigned long best_dsc_rw_frequency;
- /* The current polling frequency */
- unsigned long dsc_polling_frequency;
- /* Maximum waiting time */
+ unsigned long best_dsc_rw_freq;
+ unsigned long dsc_poll_freq;
unsigned long dsc_timeout;
- /*
- * Read position information
- */
+ /* Read position information */
u8 partition;
/* Current block */
- unsigned int first_frame_position;
- unsigned int last_frame_position;
+ unsigned int first_frm_pos;
unsigned int blocks_in_buffer;
- /*
- * Last error information
- */
+ /* Last error information */
u8 sense_key, asc, ascq;
- /*
- * Character device operation
- */
+ /* chrdev operation */
unsigned int minor;
/* device name */
char name[4];
- /* Current character device data transfer direction */
- idetape_chrdev_dir_t chrdev_direction;
+ /* current chrdev data transfer direction */
+ idetape_chrdev_dir_t chrdev_dir;
- /*
- * Device information
- */
- /* Usually 512 or 1024 bytes */
- unsigned short tape_block_size;
+ /* tape block size, usually 512 or 1024 bytes */
+ unsigned short blk_sz;
int user_bs_factor;
/* Copy of the tape's Capabilities and Mechanical Page */
u8 caps[20];
/*
- * Active data transfer request parameters.
+ * Active data transfer request parameters.
*
- * At most, there is only one ide-tape originated data transfer
- * request in the device request queue. This allows ide.c to
- * easily service requests from the other device when we
- * postpone our active request. In the pipelined operation
- * mode, we use our internal pipeline structure to hold
- * more data requests.
+ * At most, there is only one ide-tape originated data transfer request
+ * in the device request queue. This allows ide.c to easily service
+ * requests from the other device when we postpone our active request.
+ * In the pipelined operation mode, we use our internal pipeline
+ * structure to hold more data requests.
*
- * The data buffer size is chosen based on the tape's
- * recommendation.
+ * The data buffer size is chosen based on the tape's recommendation.
*/
- /* Pointer to the request which is waiting in the device request queue */
- struct request *active_data_request;
- /* Data buffer size (chosen based on the tape's recommendation */
+ /* active data request */
+ struct request *act_data_rq;
+ /* Data buffer size chosen based on the tape's recommendation */
int stage_size;
idetape_stage_t *merge_stage;
- int merge_stage_size;
+ int merge_stage_sz;
struct idetape_bh *bh;
char *b_data;
int b_count;
-
+
/*
- * Pipeline parameters.
+ * Pipeline parameters.
*
- * To accomplish non-pipelined mode, we simply set the following
- * variables to zero (or NULL, where appropriate).
+ * To accomplish non-pipelined mode, we simply set the following
+ * variables to zero (or NULL, where appropriate).
*/
- /* Number of currently used stages */
int nr_stages;
- /* Number of pending stages */
int nr_pending_stages;
/* We will not allocate more than this number of stages */
int max_stages, min_pipeline, max_pipeline;
/* The first stage which will be removed from the pipeline */
idetape_stage_t *first_stage;
- /* The currently active stage */
idetape_stage_t *active_stage;
- /* Will be serviced after the currently active request */
idetape_stage_t *next_stage;
/* New requests will be added to the pipeline here */
idetape_stage_t *last_stage;
@@ -385,21 +366,16 @@ typedef struct ide_tape_obj {
/* Status/Action flags: long for set_bit */
unsigned long flags;
/* protects the ide-tape queue */
- spinlock_t spinlock;
+ spinlock_t que_lock;
- /*
- * Measures average tape speed
- */
+ /* Measure average tape speed */
unsigned long avg_time;
int avg_size;
int avg_speed;
char vendor_id[10];
char product_id[18];
- char firmware_revision[6];
- int firmware_revision_num;
- /* the door is currently locked */
int door_locked;
/* the tape hardware is write protected */
char drv_write_prot;
@@ -407,11 +383,9 @@ typedef struct ide_tape_obj {
char write_prot;
/*
- * Limit the number of times a request can
- * be postponed, to avoid an infinite postpone
- * deadlock.
+ * Limit the number of times a request can be postponed, to avoid an
+ * infinite postpone deadlock.
*/
- /* request postpone count limit */
int postpone_cnt;
/*
@@ -426,49 +400,39 @@ typedef struct ide_tape_obj {
int tape_head;
int last_tape_head;
- /*
- * Speed control at the tape buffers input/output
- */
- unsigned long insert_time;
- int insert_size;
- int insert_speed;
- int max_insert_speed;
- int measure_insert_time;
+ /* Speed control at the tape buffers input/output */
+ ulong ins_time;
+ int ins_size;
+ int ins_speed;
+ int max_ins_speed;
+ /* measure insert time */
+ int m_ins_time;
+
+ /* Speed regulation negative feedback loop */
+ int speed_ctl;
+ /* pipeline head speed */
+ int pipe_hspeed;
+ /* controlled pipeline head speed */
+ int pipe_ctl_hspeed;
+ /* uncontrolled pipeline head speed */
+ int unctl_pipe_hspeed;
+ /* controlled last pipeline head */
+ int ctl_last_pipe_h;
+ /* uncontrolled pipeline head time */
+ ulong unctl_pipe_htime;
+ /* controlled pipeline head time */
+ ulong ctl_pipe_htime;
+ /* controlled previous pipeline head */
+ int ctl_prev_pipe_h;
+ /* uncontrolled previous pipeline head */
+ int unctl_prev_pipe_h;
+ /* controlled previous head time */
+ ulong ctl_prev_htime;
+ /* uncontrolled previous head time */
+ ulong unctl_prev_htime;
+ /* restart speed control req */
+ int rs_speed_ctl_rq;
- /*
- * Measure tape still time, in milliseconds
- */
- unsigned long tape_still_time_begin;
- int tape_still_time;
-
- /*
- * Speed regulation negative feedback loop
- */
- int speed_control;
- int pipeline_head_speed;
- int controlled_pipeline_head_speed;
- int uncontrolled_pipeline_head_speed;
- int controlled_last_pipeline_head;
- int uncontrolled_last_pipeline_head;
- unsigned long uncontrolled_pipeline_head_time;
- unsigned long controlled_pipeline_head_time;
- int controlled_previous_pipeline_head;
- int uncontrolled_previous_pipeline_head;
- unsigned long controlled_previous_head_time;
- unsigned long uncontrolled_previous_head_time;
- int restart_speed_control_req;
-
- /*
- * Debug_level determines amount of debugging output;
- * can be changed using /proc/ide/hdx/settings
- * 0 : almost no debugging output
- * 1 : 0+output errors only
- * 2 : 1+output all sensekey/asc
- * 3 : 2+follow all chrdev related procedures
- * 4 : 3+follow all procedures
- * 5 : 4+include pc_stack rq_stack info
- * 6 : 5+USE_COUNT updates
- */
u32 debug_level;
} idetape_tape_t;
@@ -714,11 +678,11 @@ 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);
+ debug_log(DBG_PCRQ_STACK, "pc_stack_index=%d\n", tape->pc_stack_idx);
- if (tape->pc_stack_index == IDETAPE_PC_STACK)
- tape->pc_stack_index=0;
- return (&tape->pc_stack[tape->pc_stack_index++]);
+ if (tape->pc_stack_idx == IDETAPE_PC_STACK)
+ tape->pc_stack_idx = 0;
+ return (&tape->pc_stack[tape->pc_stack_idx++]);
}
/*
@@ -738,11 +702,11 @@ 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);
+ debug_log(DBG_PCRQ_STACK, "rq_stack_index=%d\n", tape->rq_stack_idx);
- if (tape->rq_stack_index == IDETAPE_PC_STACK)
- tape->rq_stack_index=0;
- return (&tape->rq_stack[tape->rq_stack_index++]);
+ if (tape->rq_stack_idx == IDETAPE_PC_STACK)
+ tape->rq_stack_idx = 0;
+ return (&tape->rq_stack[tape->rq_stack_idx++]);
}
/*
@@ -779,7 +743,7 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
/* Correct pc->xferred by asking the tape. */
if (test_bit(PC_DMA_ERROR, &pc->flags)) {
pc->xferred = pc->rq_xfer -
- tape->tape_block_size *
+ tape->blk_sz *
be32_to_cpu(get_unaligned((u32 *)&sense[3]));
idetape_update_buffers(pc);
}
@@ -840,7 +804,7 @@ static void idetape_activate_next_stage(ide_drive_t *drive)
rq->rq_disk = tape->disk;
rq->buffer = NULL;
rq->special = (void *)stage->bh;
- tape->active_data_request = rq;
+ tape->act_data_rq = rq;
tape->active_stage = stage;
tape->next_stage = stage->next;
}
@@ -982,13 +946,13 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
return 0;
}
- spin_lock_irqsave(&tape->spinlock, flags);
+ spin_lock_irqsave(&tape->que_lock, flags);
/* The request was a pipelined data transfer request */
- if (tape->active_data_request == rq) {
+ if (tape->act_data_rq == rq) {
active_stage = tape->active_stage;
tape->active_stage = NULL;
- tape->active_data_request = NULL;
+ tape->act_data_rq = NULL;
tape->nr_pending_stages--;
if (rq->cmd[0] & REQ_IDETAPE_WRITE) {
remove_stage = 1;
@@ -1009,7 +973,8 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
/*
* Insert the next request into the request queue.
*/
- (void) ide_do_drive_cmd(drive, tape->active_data_request, ide_end);
+ (void) ide_do_drive_cmd(drive, tape->act_data_rq,
+ ide_end);
} else if (!error) {
idetape_increase_max_pipeline_stages(drive);
}
@@ -1021,9 +986,9 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
if (remove_stage)
idetape_remove_stage_head(drive);
- if (tape->active_data_request == NULL)
+ if (tape->act_data_rq == NULL)
clear_bit(IDETAPE_PIPELINE_ACTIVE, &tape->flags);
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
return 0;
}
@@ -1120,7 +1085,7 @@ static void idetape_postpone_request (ide_drive_t *drive)
debug_log(DBG_PROCS, "Enter %s\n", __func__);
tape->postponed_rq = HWGROUP(drive)->rq;
- ide_stall_queue(drive, tape->dsc_polling_frequency);
+ ide_stall_queue(drive, tape->dsc_poll_freq);
}
/*
@@ -1219,7 +1184,7 @@ static ide_startstop_t idetape_pc_intr (ide_drive_t *drive)
(stat & SEEK_STAT) == 0) {
/* Media access command */
tape->dsc_polling_start = jiffies;
- tape->dsc_polling_frequency = IDETAPE_DSC_MA_FAST;
+ tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST;
tape->dsc_timeout = jiffies + IDETAPE_DSC_MA_TIMEOUT;
/* Allow ide.c to handle other requests */
idetape_postpone_request(drive);
@@ -1502,48 +1467,58 @@ static void calculate_speeds(ide_drive_t *drive)
idetape_tape_t *tape = drive->driver_data;
int full = 125, empty = 75;
- 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);
- 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);
+ if (time_after(jiffies, tape->ctl_pipe_htime + 120 * HZ)) {
+ tape->ctl_prev_pipe_h = tape->ctl_last_pipe_h;
+ tape->ctl_prev_htime = tape->ctl_pipe_htime;
+ tape->ctl_last_pipe_h = tape->pipeline_head;
+ tape->ctl_pipe_htime = jiffies;
+ }
+ if (time_after(jiffies, tape->ctl_pipe_htime + 60 * HZ))
+ tape->pipe_ctl_hspeed =
+ (tape->pipeline_head - tape->ctl_last_pipe_h) * 32 *
+ HZ / (jiffies - tape->ctl_pipe_htime);
+ else if (time_after(jiffies, tape->ctl_prev_htime))
+ tape->pipe_ctl_hspeed =
+ (tape->pipeline_head - tape->ctl_prev_pipe_h) * 32 *
+ HZ / (jiffies - tape->ctl_prev_htime);
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)) {
- 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);
+ if (time_after(jiffies, tape->unctl_prev_htime + 10 * HZ)) {
+ tape->unctl_pipe_htime = jiffies;
+ tape->unctl_pipe_hspeed =
+ (tape->pipeline_head - tape->unctl_prev_pipe_h)
+ * 32 * HZ / (jiffies - tape->unctl_prev_htime);
}
} 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)) {
- tape->uncontrolled_pipeline_head_time = jiffies;
- }
- }
- tape->pipeline_head_speed = max(tape->uncontrolled_pipeline_head_speed, tape->controlled_pipeline_head_speed);
- if (tape->speed_control == 0) {
- tape->max_insert_speed = 5000;
- } else if (tape->speed_control == 1) {
+ tape->unctl_prev_htime = jiffies;
+ tape->unctl_prev_pipe_h = tape->pipeline_head;
+ if (time_after(jiffies, tape->unctl_pipe_htime + 30 * HZ))
+ tape->unctl_pipe_htime = jiffies;
+ }
+ tape->pipe_hspeed = max(tape->unctl_pipe_hspeed, tape->pipe_ctl_hspeed);
+ if (tape->speed_ctl == 0) {
+ tape->max_ins_speed = 5000;
+ } else if (tape->speed_ctl == 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;
+ tape->max_ins_speed = tape->pipe_hspeed +
+ (1100 - tape->pipe_hspeed) * 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->max_ins_speed = 500 +
+ (tape->pipe_hspeed - 500) * 2 *
+ tape->nr_pending_stages / tape->max_stages;
if (tape->nr_pending_stages >= tape->max_stages * 99 / 100)
- tape->max_insert_speed = 5000;
- } else if (tape->speed_control == 2) {
- tape->max_insert_speed = tape->pipeline_head_speed * empty / 100 +
- (tape->pipeline_head_speed * full / 100 - tape->pipeline_head_speed * empty / 100) * tape->nr_pending_stages / tape->max_stages;
+ tape->max_ins_speed = 5000;
+ } else if (tape->speed_ctl == 2) {
+ tape->max_ins_speed = tape->pipe_hspeed * empty / 100 +
+ (tape->pipe_hspeed * full / 100 - tape->pipe_hspeed *
+ empty / 100) * tape->nr_pending_stages
+ / tape->max_stages;
} else
- tape->max_insert_speed = tape->speed_control;
- tape->max_insert_speed = max(tape->max_insert_speed, 500);
+ tape->max_ins_speed = tape->speed_ctl;
+ tape->max_ins_speed = max(tape->max_ins_speed, 500);
}
static ide_startstop_t idetape_media_access_finished (ide_drive_t *drive)
@@ -1576,27 +1551,29 @@ static ide_startstop_t idetape_rw_callback (ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
struct request *rq = HWGROUP(drive)->rq;
- int blocks = tape->pc->xferred / tape->tape_block_size;
-
- tape->avg_size += blocks * tape->tape_block_size;
- tape->insert_size += blocks * tape->tape_block_size;
- if (tape->insert_size > 1024 * 1024)
- tape->measure_insert_time = 1;
- if (tape->measure_insert_time) {
- tape->measure_insert_time = 0;
- tape->insert_time = jiffies;
- tape->insert_size = 0;
- }
- if (time_after(jiffies, tape->insert_time))
- tape->insert_speed = tape->insert_size / 1024 * HZ / (jiffies - tape->insert_time);
+ int blocks = tape->pc->xferred / tape->blk_sz;
+
+ tape->avg_size += blocks * tape->blk_sz;
+ tape->ins_size += blocks * tape->blk_sz;
+ if (tape->ins_size > 1024 * 1024)
+ tape->m_ins_time = 1;
+ if (tape->m_ins_time) {
+ tape->m_ins_time = 0;
+ tape->ins_time = jiffies;
+ tape->ins_size = 0;
+ }
+ if (time_after(jiffies, tape->ins_time))
+ tape->ins_speed = tape->ins_size / 1024 * HZ /
+ (jiffies - tape->ins_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;
}
debug_log(DBG_PROCS, "Enter %s\n", __func__);
- tape->first_frame_position += blocks;
+ tape->first_frm_pos += blocks;
rq->current_nr_sectors -= blocks;
if (!tape->pc->error)
@@ -1616,7 +1593,7 @@ static void idetape_create_read_cmd(idetape_tape_t *tape, idetape_pc_t *pc, unsi
pc->bh = bh;
atomic_set(&bh->b_count, 0);
pc->buffer = NULL;
- pc->buf_size = length * tape->tape_block_size;
+ pc->buf_size = length * tape->blk_sz;
pc->rq_xfer = pc->buf_size;
if (pc->rq_xfer == tape->stage_size)
set_bit(PC_DMA_RECOMMENDED, &pc->flags);
@@ -1655,7 +1632,7 @@ static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc, uns
pc->b_data = bh->b_data;
pc->b_count = atomic_read(&bh->b_count);
pc->buffer = NULL;
- pc->rq_xfer = pc->buf_size = length * tape->tape_block_size;
+ pc->rq_xfer = pc->buf_size = length * tape->blk_sz;
if (pc->rq_xfer == tape->stage_size)
set_bit(PC_DMA_RECOMMENDED, &pc->flags);
}
@@ -1716,16 +1693,15 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
drive->post_reset = 0;
}
- if (tape->tape_still_time > 100 && tape->tape_still_time < 200)
- tape->measure_insert_time = 1;
- if (time_after(jiffies, tape->insert_time))
- tape->insert_speed = tape->insert_size / 1024 * HZ / (jiffies - tape->insert_time);
+ if (time_after(jiffies, tape->ins_time))
+ tape->ins_speed = tape->ins_size / 1024 * HZ /
+ (jiffies - tape->ins_time);
calculate_speeds(drive);
if (!test_and_clear_bit(IDETAPE_IGNORE_DSC, &tape->flags) &&
(stat & SEEK_STAT) == 0) {
if (postponed_rq == NULL) {
tape->dsc_polling_start = jiffies;
- tape->dsc_polling_frequency = tape->best_dsc_rw_frequency;
+ tape->dsc_poll_freq = tape->best_dsc_rw_freq;
tape->dsc_timeout = jiffies + IDETAPE_DSC_RW_TIMEOUT;
} else if (time_after(jiffies, tape->dsc_timeout)) {
printk(KERN_ERR "ide-tape: %s: DSC timeout\n",
@@ -1737,7 +1713,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
return ide_do_reset(drive);
}
} else if (time_after(jiffies, tape->dsc_polling_start + IDETAPE_DSC_MA_THRESHOLD))
- tape->dsc_polling_frequency = IDETAPE_DSC_MA_SLOW;
+ tape->dsc_poll_freq = IDETAPE_DSC_MA_SLOW;
idetape_postpone_request(drive);
return ide_stopped;
}
@@ -1784,7 +1760,7 @@ static inline int idetape_pipeline_active (idetape_tape_t *tape)
int rc1, rc2;
rc1 = test_bit(IDETAPE_PIPELINE_ACTIVE, &tape->flags);
- rc2 = (tape->active_data_request != NULL);
+ rc2 = (tape->act_data_rq != NULL);
return rc1;
}
@@ -1938,7 +1914,7 @@ static void idetape_init_merge_stage (idetape_tape_t *tape)
struct idetape_bh *bh = tape->merge_stage->bh;
tape->bh = bh;
- if (tape->chrdev_direction == idetape_dir_write)
+ if (tape->chrdev_dir == idetape_dir_write)
atomic_set(&bh->b_count, 0);
else {
tape->b_data = bh->b_data;
@@ -1966,7 +1942,7 @@ static void idetape_add_stage_tail (ide_drive_t *drive,idetape_stage_t *stage)
debug_log(DBG_PROCS, "Enter %s\n", __func__);
- spin_lock_irqsave(&tape->spinlock, flags);
+ spin_lock_irqsave(&tape->que_lock, flags);
stage->next = NULL;
if (tape->last_stage != NULL)
tape->last_stage->next=stage;
@@ -1977,7 +1953,7 @@ static void idetape_add_stage_tail (ide_drive_t *drive,idetape_stage_t *stage)
tape->next_stage = tape->last_stage;
tape->nr_stages++;
tape->nr_pending_stages++;
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
}
/*
@@ -1998,10 +1974,10 @@ static void idetape_wait_for_request (ide_drive_t *drive, struct request *rq)
}
rq->end_io_data = &wait;
rq->end_io = blk_end_sync_rq;
- spin_unlock_irq(&tape->spinlock);
+ spin_unlock_irq(&tape->que_lock);
wait_for_completion(&wait);
/* The stage and its struct request have been deallocated */
- spin_lock_irq(&tape->spinlock);
+ spin_lock_irq(&tape->que_lock);
}
static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive)
@@ -2028,10 +2004,8 @@ static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive)
be32_to_cpu(*(u32 *)&readpos[4]));
tape->partition = readpos[1];
- tape->first_frame_position =
+ tape->first_frm_pos =
be32_to_cpu(*(u32 *)&readpos[4]);
- tape->last_frame_position =
- be32_to_cpu(*(u32 *)&readpos[8]);
tape->blocks_in_buffer = readpos[15];
set_bit(IDETAPE_ADDRESS_VALID, &tape->flags);
idetape_end_request(drive, 1, 0);
@@ -2173,7 +2147,7 @@ static int idetape_read_position (ide_drive_t *drive)
idetape_create_read_position_cmd(&pc);
if (idetape_queue_pc_tail(drive, &pc))
return -1;
- position = tape->first_frame_position;
+ position = tape->first_frm_pos;
return position;
}
@@ -2209,14 +2183,14 @@ static int __idetape_discard_read_pipeline (ide_drive_t *drive)
unsigned long flags;
int cnt;
- if (tape->chrdev_direction != idetape_dir_read)
+ if (tape->chrdev_dir != idetape_dir_read)
return 0;
/* Remove merge stage. */
- cnt = tape->merge_stage_size / tape->tape_block_size;
+ cnt = tape->merge_stage_sz / tape->blk_sz;
if (test_and_clear_bit(IDETAPE_FILEMARK, &tape->flags))
++cnt; /* Filemarks count as 1 sector */
- tape->merge_stage_size = 0;
+ tape->merge_stage_sz = 0;
if (tape->merge_stage != NULL) {
__idetape_kfree_stage(tape->merge_stage);
tape->merge_stage = NULL;
@@ -2224,17 +2198,17 @@ static int __idetape_discard_read_pipeline (ide_drive_t *drive)
/* Clear pipeline flags. */
clear_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
- tape->chrdev_direction = idetape_dir_none;
+ tape->chrdev_dir = idetape_dir_none;
/* Remove pipeline stages. */
if (tape->first_stage == NULL)
return 0;
- spin_lock_irqsave(&tape->spinlock, flags);
+ spin_lock_irqsave(&tape->que_lock, flags);
tape->next_stage = NULL;
if (idetape_pipeline_active(tape))
- idetape_wait_for_request(drive, tape->active_data_request);
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ idetape_wait_for_request(drive, tape->act_data_rq);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
while (tape->first_stage != NULL) {
struct request *rq_ptr = &tape->first_stage->rq;
@@ -2264,7 +2238,7 @@ static int idetape_position_tape (ide_drive_t *drive, unsigned int block, u8 par
int retval;
idetape_pc_t pc;
- if (tape->chrdev_direction == idetape_dir_read)
+ if (tape->chrdev_dir == idetape_dir_read)
__idetape_discard_read_pipeline(drive);
idetape_wait_ready(drive, 60 * 5 * HZ);
idetape_create_locate_cmd(drive, &pc, block, partition, skip);
@@ -2313,7 +2287,7 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks, struct
idetape_init_rq(&rq, cmd);
rq.rq_disk = tape->disk;
rq.special = (void *)bh;
- rq.sector = tape->first_frame_position;
+ rq.sector = tape->first_frm_pos;
rq.nr_sectors = rq.current_nr_sectors = blocks;
(void) ide_do_drive_cmd(drive, &rq, ide_wait);
@@ -2324,7 +2298,7 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks, struct
idetape_init_merge_stage(tape);
if (rq.errors == IDETAPE_ERROR_GENERAL)
return -EIO;
- return (tape->tape_block_size * (blocks-rq.current_nr_sectors));
+ return (tape->blk_sz * (blocks-rq.current_nr_sectors));
}
/*
@@ -2340,7 +2314,7 @@ static void idetape_insert_pipeline_into_queue (ide_drive_t *drive)
if (!idetape_pipeline_active(tape)) {
set_bit(IDETAPE_PIPELINE_ACTIVE, &tape->flags);
idetape_activate_next_stage(drive);
- (void) ide_do_drive_cmd(drive, tape->active_data_request, ide_end);
+ (void) ide_do_drive_cmd(drive, tape->act_data_rq, ide_end);
}
}
@@ -2386,10 +2360,10 @@ static void idetape_wait_first_stage (ide_drive_t *drive)
if (tape->first_stage == NULL)
return;
- spin_lock_irqsave(&tape->spinlock, flags);
+ spin_lock_irqsave(&tape->que_lock, flags);
if (tape->active_stage == tape->first_stage)
- idetape_wait_for_request(drive, tape->active_data_request);
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ idetape_wait_for_request(drive, tape->act_data_rq);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
}
/*
@@ -2417,12 +2391,12 @@ static int idetape_add_chrdev_write_request (ide_drive_t *drive, int blocks)
* Pay special attention to possible race conditions.
*/
while ((new_stage = idetape_kmalloc_stage(tape)) == NULL) {
- spin_lock_irqsave(&tape->spinlock, flags);
+ spin_lock_irqsave(&tape->que_lock, flags);
if (idetape_pipeline_active(tape)) {
- idetape_wait_for_request(drive, tape->active_data_request);
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ idetape_wait_for_request(drive, tape->act_data_rq);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
} else {
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
idetape_insert_pipeline_into_queue(drive);
if (idetape_pipeline_active(tape))
continue;
@@ -2436,7 +2410,7 @@ static int idetape_add_chrdev_write_request (ide_drive_t *drive, int blocks)
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_position;
+ rq->sector = tape->first_frm_pos;
rq->nr_sectors = rq->current_nr_sectors = blocks;
idetape_switch_buffers(tape, new_stage);
@@ -2453,11 +2427,12 @@ static int idetape_add_chrdev_write_request (ide_drive_t *drive, int blocks)
*/
if (!idetape_pipeline_active(tape)) {
if (tape->nr_stages >= tape->max_stages * 9 / 10 ||
- tape->nr_stages >= tape->max_stages - tape->uncontrolled_pipeline_head_speed * 3 * 1024 / tape->tape_block_size) {
- tape->measure_insert_time = 1;
- tape->insert_time = jiffies;
- tape->insert_size = 0;
- tape->insert_speed = 0;
+ tape->nr_stages >= tape->max_stages -
+ tape->unctl_pipe_hspeed * 3 * 1024 / tape->blk_sz) {
+ tape->m_ins_time = 1;
+ tape->ins_time = jiffies;
+ tape->ins_size = 0;
+ tape->ins_speed = 0;
idetape_insert_pipeline_into_queue(drive);
}
}
@@ -2478,10 +2453,10 @@ static void idetape_wait_for_pipeline (ide_drive_t *drive)
while (tape->next_stage || idetape_pipeline_active(tape)) {
idetape_insert_pipeline_into_queue(drive);
- spin_lock_irqsave(&tape->spinlock, flags);
+ spin_lock_irqsave(&tape->que_lock, flags);
if (idetape_pipeline_active(tape))
- idetape_wait_for_request(drive, tape->active_data_request);
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ idetape_wait_for_request(drive, tape->act_data_rq);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
}
}
@@ -2491,21 +2466,21 @@ static void idetape_empty_write_pipeline (ide_drive_t *drive)
int blocks, min;
struct idetape_bh *bh;
- if (tape->chrdev_direction != idetape_dir_write) {
+ if (tape->chrdev_dir != idetape_dir_write) {
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) {
+ if (tape->merge_stage_sz > tape->stage_size) {
printk(KERN_ERR "ide-tape: bug: merge_buffer too big\n");
- tape->merge_stage_size = tape->stage_size;
+ tape->merge_stage_sz = tape->stage_size;
}
- if (tape->merge_stage_size) {
- blocks = tape->merge_stage_size / tape->tape_block_size;
- if (tape->merge_stage_size % tape->tape_block_size) {
+ if (tape->merge_stage_sz) {
+ blocks = tape->merge_stage_sz / tape->blk_sz;
+ if (tape->merge_stage_sz % tape->blk_sz) {
unsigned int i;
blocks++;
- i = tape->tape_block_size - tape->merge_stage_size % tape->tape_block_size;
+ i = tape->blk_sz - tape->merge_stage_sz % tape->blk_sz;
bh = tape->bh->b_reqnext;
while (bh) {
atomic_set(&bh->b_count, 0);
@@ -2526,7 +2501,7 @@ static void idetape_empty_write_pipeline (ide_drive_t *drive)
}
}
(void) idetape_add_chrdev_write_request(drive, blocks);
- tape->merge_stage_size = 0;
+ tape->merge_stage_sz = 0;
}
idetape_wait_for_pipeline(drive);
if (tape->merge_stage != NULL) {
@@ -2534,7 +2509,7 @@ static void idetape_empty_write_pipeline (ide_drive_t *drive)
tape->merge_stage = NULL;
}
clear_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
- tape->chrdev_direction = idetape_dir_none;
+ tape->chrdev_dir = idetape_dir_none;
/*
* On the next backup, perform the feedback loop again.
@@ -2559,14 +2534,14 @@ static void idetape_restart_speed_control (ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
- tape->restart_speed_control_req = 0;
+ tape->rs_speed_ctl_rq = 0;
tape->pipeline_head = 0;
- tape->controlled_last_pipeline_head = tape->uncontrolled_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->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->ctl_last_pipe_h = 0;
+ tape->ctl_prev_pipe_h = tape->unctl_prev_pipe_h = 0;
+ tape->pipe_hspeed = tape->pipe_ctl_hspeed = 5000;
+ tape->unctl_pipe_hspeed = 0;
+ tape->ctl_pipe_htime = tape->unctl_pipe_htime = jiffies;
+ tape->ctl_prev_htime = tape->unctl_prev_htime = jiffies;
}
static int idetape_initiate_read (ide_drive_t *drive, int max_stages)
@@ -2578,18 +2553,18 @@ static int idetape_initiate_read (ide_drive_t *drive, int max_stages)
u16 blocks = *(u16 *)&tape->caps[12];
/* Initialize read operation */
- if (tape->chrdev_direction != idetape_dir_read) {
- if (tape->chrdev_direction == idetape_dir_write) {
+ if (tape->chrdev_dir != idetape_dir_read) {
+ if (tape->chrdev_dir == idetape_dir_write) {
idetape_empty_write_pipeline(drive);
idetape_flush_tape_buffers(drive);
}
- if (tape->merge_stage || tape->merge_stage_size) {
+ if (tape->merge_stage || tape->merge_stage_sz) {
printk (KERN_ERR "ide-tape: merge_stage_size should be 0 now\n");
- tape->merge_stage_size = 0;
+ tape->merge_stage_sz = 0;
}
if ((tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0)) == NULL)
return -ENOMEM;
- tape->chrdev_direction = idetape_dir_read;
+ tape->chrdev_dir = idetape_dir_read;
/*
* Issue a read 0 command to ensure that DSC handshake
@@ -2603,15 +2578,15 @@ static int idetape_initiate_read (ide_drive_t *drive, int max_stages)
if (bytes_read < 0) {
__idetape_kfree_stage(tape->merge_stage);
tape->merge_stage = NULL;
- tape->chrdev_direction = idetape_dir_none;
+ tape->chrdev_dir = idetape_dir_none;
return bytes_read;
}
}
}
- if (tape->restart_speed_control_req)
+ if (tape->rs_speed_ctl_rq)
idetape_restart_speed_control(drive);
idetape_init_rq(&rq, REQ_IDETAPE_READ);
- rq.sector = tape->first_frame_position;
+ rq.sector = tape->first_frm_pos;
rq.nr_sectors = rq.current_nr_sectors = blocks;
if (!test_bit(IDETAPE_PIPELINE_ERROR, &tape->flags) &&
tape->nr_stages < max_stages) {
@@ -2626,10 +2601,10 @@ static int idetape_initiate_read (ide_drive_t *drive, int max_stages)
}
if (!idetape_pipeline_active(tape)) {
if (tape->nr_pending_stages >= 3 * max_stages / 4) {
- tape->measure_insert_time = 1;
- tape->insert_time = jiffies;
- tape->insert_size = 0;
- tape->insert_speed = 0;
+ tape->m_ins_time = 1;
+ tape->ins_time = jiffies;
+ tape->ins_size = 0;
+ tape->ins_speed = 0;
idetape_insert_pipeline_into_queue(drive);
}
}
@@ -2668,7 +2643,8 @@ static int idetape_add_chrdev_read_request (ide_drive_t *drive,int blocks)
}
idetape_wait_first_stage(drive);
rq_ptr = &tape->first_stage->rq;
- bytes_read = tape->tape_block_size * (rq_ptr->nr_sectors - rq_ptr->current_nr_sectors);
+ bytes_read = tape->blk_sz *
+ (rq_ptr->nr_sectors - rq_ptr->current_nr_sectors);
rq_ptr->nr_sectors = rq_ptr->current_nr_sectors = 0;
@@ -2678,15 +2654,15 @@ static int idetape_add_chrdev_read_request (ide_drive_t *drive,int blocks)
idetape_switch_buffers(tape, tape->first_stage);
if (rq_ptr->errors == IDETAPE_ERROR_FILEMARK)
set_bit(IDETAPE_FILEMARK, &tape->flags);
- spin_lock_irqsave(&tape->spinlock, flags);
+ spin_lock_irqsave(&tape->que_lock, flags);
idetape_remove_stage_head(drive);
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
tape->pipeline_head++;
calculate_speeds(drive);
}
- if (bytes_read > blocks * tape->tape_block_size) {
+ if (bytes_read > blocks * tape->blk_sz) {
printk(KERN_ERR "ide-tape: bug: trying to return more bytes than requested\n");
- bytes_read = blocks * tape->tape_block_size;
+ bytes_read = blocks * tape->blk_sz;
}
return (bytes_read);
}
@@ -2703,7 +2679,7 @@ static void idetape_pad_zeros (ide_drive_t *drive, int bcount)
bh = tape->merge_stage->bh;
count = min(tape->stage_size, bcount);
bcount -= count;
- blocks = count / tape->tape_block_size;
+ blocks = count / tape->blk_sz;
while (count) {
atomic_set(&bh->b_count, min(count, (unsigned int)bh->b_size));
memset(bh->b_data, 0, atomic_read(&bh->b_count));
@@ -2725,12 +2701,12 @@ static int idetape_pipeline_size (ide_drive_t *drive)
stage = tape->first_stage;
while (stage != NULL) {
rq = &stage->rq;
- size += tape->tape_block_size * (rq->nr_sectors-rq->current_nr_sectors);
+ size += tape->blk_sz * (rq->nr_sectors-rq->current_nr_sectors);
if (rq->errors == IDETAPE_ERROR_FILEMARK)
- size += tape->tape_block_size;
+ size += tape->blk_sz;
stage = stage->next;
}
- size += tape->merge_stage_size;
+ size += tape->merge_stage_sz;
return size;
}
@@ -2779,11 +2755,11 @@ static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd, unsigned l
case 0x0340:
if (copy_from_user(&config, argp, sizeof (idetape_config_t)))
return -EFAULT;
- tape->best_dsc_rw_frequency = config.dsc_rw_frequency;
+ 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_frequency;
+ config.dsc_rw_frequency = (int) tape->best_dsc_rw_freq;
config.nr_stages = tape->max_stages;
if (copy_to_user(argp, &config, sizeof (idetape_config_t)))
return -EFAULT;
@@ -2819,12 +2795,12 @@ static int idetape_space_over_filemarks (ide_drive_t *drive,short mt_op,int mt_c
mt_count = - mt_count;
}
- if (tape->chrdev_direction == idetape_dir_read) {
+ if (tape->chrdev_dir == idetape_dir_read) {
/*
* We have a read-ahead buffer. Scan it for crossed
* filemarks.
*/
- tape->merge_stage_size = 0;
+ tape->merge_stage_sz = 0;
if (test_and_clear_bit(IDETAPE_FILEMARK, &tape->flags))
++count;
while (tape->first_stage != NULL) {
@@ -2833,7 +2809,7 @@ static int idetape_space_over_filemarks (ide_drive_t *drive,short mt_op,int mt_c
set_bit(IDETAPE_FILEMARK, &tape->flags);
return 0;
}
- spin_lock_irqsave(&tape->spinlock, flags);
+ spin_lock_irqsave(&tape->que_lock, flags);
if (tape->first_stage == tape->active_stage) {
/*
* We have reached the active stage in the read pipeline.
@@ -2845,11 +2821,11 @@ static int idetape_space_over_filemarks (ide_drive_t *drive,short mt_op,int mt_c
* __idetape_discard_read_pipeline(), for example.
*/
tape->next_stage = NULL;
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
idetape_wait_first_stage(drive);
tape->next_stage = tape->first_stage->next;
} else
- spin_unlock_irqrestore(&tape->spinlock, flags);
+ spin_unlock_irqrestore(&tape->que_lock, flags);
if (tape->first_stage->rq.errors == IDETAPE_ERROR_FILEMARK)
++count;
idetape_remove_stage_head(drive);
@@ -2909,22 +2885,22 @@ static ssize_t idetape_chrdev_read (struct file *file, char __user *buf,
debug_log(DBG_CHRDEV, "Enter %s, count %Zd\n", __func__, count);
- if (tape->chrdev_direction != idetape_dir_read) {
+ if (tape->chrdev_dir != idetape_dir_read) {
if (test_bit(IDETAPE_DETECT_BS, &tape->flags))
- if (count > tape->tape_block_size &&
- (count % tape->tape_block_size) == 0)
- tape->user_bs_factor = count / tape->tape_block_size;
+ if (count > tape->blk_sz &&
+ (count % tape->blk_sz) == 0)
+ tape->user_bs_factor = count / tape->blk_sz;
}
if ((rc = idetape_initiate_read(drive, tape->max_stages)) < 0)
return rc;
if (count == 0)
return (0);
- if (tape->merge_stage_size) {
- actually_read = min((unsigned int)(tape->merge_stage_size), (unsigned int)count);
+ if (tape->merge_stage_sz) {
+ actually_read = min((uint)(tape->merge_stage_sz), (uint)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;
+ tape->merge_stage_sz -= actually_read;
count -= actually_read;
}
while (count >= tape->stage_size) {
@@ -2945,7 +2921,7 @@ static ssize_t idetape_chrdev_read (struct file *file, char __user *buf,
if (idetape_copy_stage_to_user(tape, buf, tape->merge_stage, temp))
ret = -EFAULT;
actually_read += temp;
- tape->merge_stage_size = bytes_read-temp;
+ tape->merge_stage_sz = bytes_read-temp;
}
finish:
if (!actually_read && test_bit(IDETAPE_FILEMARK, &tape->flags)) {
@@ -2974,17 +2950,17 @@ static ssize_t idetape_chrdev_write (struct file *file, const char __user *buf,
debug_log(DBG_CHRDEV, "Enter %s, count %Zd\n", __func__, count);
/* Initialize write operation */
- if (tape->chrdev_direction != idetape_dir_write) {
- if (tape->chrdev_direction == idetape_dir_read)
+ if (tape->chrdev_dir != idetape_dir_write) {
+ if (tape->chrdev_dir == idetape_dir_read)
idetape_discard_read_pipeline(drive, 1);
- if (tape->merge_stage || tape->merge_stage_size) {
+ if (tape->merge_stage || tape->merge_stage_sz) {
printk(KERN_ERR "ide-tape: merge_stage_size "
"should be 0 now\n");
- tape->merge_stage_size = 0;
+ tape->merge_stage_sz = 0;
}
if ((tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0)) == NULL)
return -ENOMEM;
- tape->chrdev_direction = idetape_dir_write;
+ tape->chrdev_dir = idetape_dir_write;
idetape_init_merge_stage(tape);
/*
@@ -2999,30 +2975,31 @@ static ssize_t idetape_chrdev_write (struct file *file, const char __user *buf,
if (retval < 0) {
__idetape_kfree_stage(tape->merge_stage);
tape->merge_stage = NULL;
- tape->chrdev_direction = idetape_dir_none;
+ tape->chrdev_dir = idetape_dir_none;
return retval;
}
}
}
if (count == 0)
return (0);
- if (tape->restart_speed_control_req)
+ if (tape->rs_speed_ctl_rq)
idetape_restart_speed_control(drive);
- if (tape->merge_stage_size) {
- if (tape->merge_stage_size >= tape->stage_size) {
+ if (tape->merge_stage_sz) {
+ if (tape->merge_stage_sz >= tape->stage_size) {
printk(KERN_ERR "ide-tape: bug: merge buffer too big\n");
- tape->merge_stage_size = 0;
+ tape->merge_stage_sz = 0;
}
- actually_written = min((unsigned int)(tape->stage_size - tape->merge_stage_size), (unsigned int)count);
+ actually_written = min((uint)(tape->stage_size -
+ tape->merge_stage_sz), (uint)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;
+ tape->merge_stage_sz += actually_written;
count -= actually_written;
- if (tape->merge_stage_size == tape->stage_size) {
+ if (tape->merge_stage_sz == tape->stage_size) {
ssize_t retval;
- tape->merge_stage_size = 0;
+ tape->merge_stage_sz = 0;
retval = idetape_add_chrdev_write_request(drive, ctl);
if (retval <= 0)
return (retval);
@@ -3043,7 +3020,7 @@ static ssize_t idetape_chrdev_write (struct file *file, const char __user *buf,
actually_written += count;
if (idetape_copy_stage_from_user(tape, tape->merge_stage, buf, count))
ret = -EFAULT;
- tape->merge_stage_size += count;
+ tape->merge_stage_sz += count;
}
return (ret) ? ret : actually_written;
}
@@ -3199,9 +3176,10 @@ static int idetape_mtioctop (ide_drive_t *drive,short mt_op,int mt_count)
return (idetape_queue_pc_tail(drive, &pc));
case MTSETBLK:
if (mt_count) {
- if (mt_count < tape->tape_block_size || mt_count % tape->tape_block_size)
+ if (mt_count < tape->blk_sz ||
+ mt_count % tape->blk_sz)
return -EIO;
- tape->user_bs_factor = mt_count / tape->tape_block_size;
+ tape->user_bs_factor = mt_count / tape->blk_sz;
clear_bit(IDETAPE_DETECT_BS, &tape->flags);
} else
set_bit(IDETAPE_DETECT_BS, &tape->flags);
@@ -3265,18 +3243,19 @@ static int idetape_chrdev_ioctl (struct inode *inode, struct file *file, unsigne
struct mtop mtop;
struct mtget mtget;
struct mtpos mtpos;
- int block_offset = 0, position = tape->first_frame_position;
+ int block_offset = 0, position = tape->first_frm_pos;
void __user *argp = (void __user *)arg;
debug_log(DBG_CHRDEV, "Enter %s, cmd=%u\n", __func__, cmd);
- tape->restart_speed_control_req = 1;
- if (tape->chrdev_direction == idetape_dir_write) {
+ tape->rs_speed_ctl_rq = 1;
+ if (tape->chrdev_dir == idetape_dir_write) {
idetape_empty_write_pipeline(drive);
idetape_flush_tape_buffers(drive);
}
if (cmd == MTIOCGET || cmd == MTIOCPOS) {
- block_offset = idetape_pipeline_size(drive) / (tape->tape_block_size * tape->user_bs_factor);
+ block_offset = idetape_pipeline_size(drive) /
+ (tape->blk_sz * tape->user_bs_factor);
if ((position = idetape_read_position(drive)) < 0)
return -EIO;
}
@@ -3289,7 +3268,9 @@ static int idetape_chrdev_ioctl (struct inode *inode, struct file *file, unsigne
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->tape_block_size * tape->user_bs_factor) << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK;
+ mtget.mt_dsreg = ((tape->blk_sz * tape->user_bs_factor)
+ << MT_ST_BLKSIZE_SHIFT)
+ & MT_ST_BLKSIZE_MASK;
if (tape->drv_write_prot) {
mtget.mt_gstat |= GMT_WR_PROT(0xffffffff);
}
@@ -3302,7 +3283,7 @@ static int idetape_chrdev_ioctl (struct inode *inode, struct file *file, unsigne
return -EFAULT;
return 0;
default:
- if (tape->chrdev_direction == idetape_dir_read)
+ if (tape->chrdev_dir == idetape_dir_read)
idetape_discard_read_pipeline(drive, 1);
return idetape_blkdev_ioctl(drive, cmd, arg);
}
@@ -3321,14 +3302,14 @@ static void ide_tape_get_bsize_from_bdesc(ide_drive_t *drive)
idetape_create_mode_sense_cmd(&pc, IDETAPE_BLOCK_DESCRIPTOR);
if (idetape_queue_pc_tail(drive, &pc)) {
printk(KERN_ERR "ide-tape: Can't get block descriptor\n");
- if (tape->tape_block_size == 0) {
+ if (tape->blk_sz == 0) {
printk(KERN_WARNING "ide-tape: Cannot deal with zero "
"block size, assuming 32k\n");
- tape->tape_block_size = 32768;
+ tape->blk_sz = 32768;
}
return;
}
- tape->tape_block_size = (pc.buffer[4 + 5] << 16) +
+ tape->blk_sz = (pc.buffer[4 + 5] << 16) +
(pc.buffer[4 + 6] << 8) +
pc.buffer[4 + 7];
@@ -3381,7 +3362,7 @@ static int idetape_chrdev_open (struct inode *inode, struct file *filp)
if (!test_bit(IDETAPE_ADDRESS_VALID, &tape->flags))
(void)idetape_rewind_tape(drive);
- if (tape->chrdev_direction != idetape_dir_read)
+ if (tape->chrdev_dir != idetape_dir_read)
clear_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
/* Read block size and write protect status from drive. */
@@ -3406,7 +3387,7 @@ static int idetape_chrdev_open (struct inode *inode, struct file *filp)
/*
* Lock the tape drive door so user can't eject.
*/
- if (tape->chrdev_direction == idetape_dir_none) {
+ if (tape->chrdev_dir == idetape_dir_none) {
if (idetape_create_prevent_cmd(drive, &pc, 1)) {
if (!idetape_queue_pc_tail(drive, &pc)) {
if (tape->door_locked != DOOR_EXPLICITLY_LOCKED)
@@ -3415,7 +3396,7 @@ static int idetape_chrdev_open (struct inode *inode, struct file *filp)
}
}
idetape_restart_speed_control(drive);
- tape->restart_speed_control_req = 0;
+ tape->rs_speed_ctl_rq = 0;
return 0;
out_put_tape:
@@ -3430,7 +3411,8 @@ static void idetape_write_release (ide_drive_t *drive, unsigned int minor)
idetape_empty_write_pipeline(drive);
tape->merge_stage = __idetape_kmalloc_stage(tape, 1, 0);
if (tape->merge_stage != NULL) {
- idetape_pad_zeros(drive, tape->tape_block_size * (tape->user_bs_factor - 1));
+ idetape_pad_zeros(drive, tape->blk_sz *
+ (tape->user_bs_factor - 1));
__idetape_kfree_stage(tape->merge_stage);
tape->merge_stage = NULL;
}
@@ -3454,9 +3436,9 @@ static int idetape_chrdev_release (struct inode *inode, struct file *filp)
debug_log(DBG_CHRDEV, "Enter %s\n", __func__);
- if (tape->chrdev_direction == idetape_dir_write)
+ if (tape->chrdev_dir == idetape_dir_write)
idetape_write_release(drive, minor);
- if (tape->chrdev_direction == idetape_dir_read) {
+ if (tape->chrdev_dir == idetape_dir_read) {
if (minor < 128)
idetape_discard_read_pipeline(drive, 1);
else
@@ -3468,7 +3450,7 @@ static int idetape_chrdev_release (struct inode *inode, struct file *filp)
}
if (minor < 128 && test_bit(IDETAPE_MEDIUM_PRESENT, &tape->flags))
(void) idetape_rewind_tape(drive);
- if (tape->chrdev_direction == idetape_dir_none) {
+ if (tape->chrdev_dir == idetape_dir_none) {
if (tape->door_locked == DOOR_LOCKED) {
if (idetape_create_prevent_cmd(drive, &pc, 0)) {
if (!idetape_queue_pc_tail(drive, &pc))
@@ -3520,9 +3502,9 @@ static int idetape_identify_device (ide_drive_t *drive)
static void idetape_get_inquiry_results(ide_drive_t *drive)
{
- char *r;
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t pc;
+ char fw_rev[6];
idetape_create_inquiry_cmd(&pc);
if (idetape_queue_pc_tail(drive, &pc)) {
@@ -3532,18 +3514,15 @@ static void idetape_get_inquiry_results(ide_drive_t *drive)
}
memcpy(tape->vendor_id, &pc.buffer[8], 8);
memcpy(tape->product_id, &pc.buffer[16], 16);
- memcpy(tape->firmware_revision, &pc.buffer[32], 4);
+ memcpy(fw_rev, &pc.buffer[32], 4);
ide_fixstring(tape->vendor_id, 10, 0);
ide_fixstring(tape->product_id, 18, 0);
- ide_fixstring(tape->firmware_revision, 6, 0);
- r = tape->firmware_revision;
- if (*(r + 1) == '.')
- tape->firmware_revision_num = (*r - '0') * 100 +
- (*(r + 2) - '0') * 10 + *(r + 3) - '0';
+ ide_fixstring(fw_rev, 6, 0);
+
printk(KERN_INFO "ide-tape: %s <-> %s: %s %s rev %s\n",
drive->name, tape->name, tape->vendor_id,
- tape->product_id, tape->firmware_revision);
+ tape->product_id, fw_rev);
}
/*
@@ -3561,7 +3540,7 @@ static void idetape_get_mode_sense_results (ide_drive_t *drive)
if (idetape_queue_pc_tail(drive, &pc)) {
printk(KERN_ERR "ide-tape: Can't get tape parameters - assuming"
" some default values\n");
- tape->tape_block_size = 512;
+ tape->blk_sz = 512;
put_unaligned(52, (u16 *)&tape->caps[12]);
put_unaligned(540, (u16 *)&tape->caps[14]);
put_unaligned(6*52, (u16 *)&tape->caps[16]);
@@ -3591,9 +3570,9 @@ static void idetape_get_mode_sense_results (ide_drive_t *drive)
memcpy(&tape->caps, caps, 20);
if (!!(caps[7] & 0x02))
- tape->tape_block_size = 512;
+ tape->blk_sz = 512;
else if (!!(caps[7] & 0x04))
- tape->tape_block_size = 1024;
+ tape->blk_sz = 1024;
}
@@ -3615,10 +3594,14 @@ static void idetape_add_settings (ide_drive_t *drive)
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, 1024, &tape->stage_size, NULL);
- ide_add_setting(drive, "tdsc", SETTING_RW, TYPE_INT, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX, 1000, HZ, &tape->best_dsc_rw_frequency, NULL);
+ 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, "pipeline_head_speed_c", SETTING_READ, TYPE_INT,
+ 0, 0xffff, 1, 1, &tape->pipe_ctl_hspeed, NULL);
+ ide_add_setting(drive, "pipeline_head_speed_u", SETTING_READ, TYPE_INT,
+ 0, 0xffff, 1, 1, &tape->unctl_pipe_hspeed, NULL);
ide_add_setting(drive, "avg_speed", SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1, &tape->avg_speed, NULL);
ide_add_setting(drive, "debug_level", SETTING_RW, TYPE_INT, 0, 0xffff, 1, 1, &tape->debug_level, NULL);
}
@@ -3647,7 +3630,7 @@ static void idetape_setup (ide_drive_t *drive, idetape_tape_t *tape, int minor)
struct sysinfo si;
u16 *ctl = (u16 *)&tape->caps[12];
- spin_lock_init(&tape->spinlock);
+ spin_lock_init(&tape->que_lock);
drive->dsc_overlap = 1;
if (drive->hwif->host_flags & IDE_HFLAG_NO_DSC) {
printk(KERN_INFO "ide-tape: %s: disabling DSC overlap\n",
@@ -3661,10 +3644,10 @@ static void idetape_setup (ide_drive_t *drive, idetape_tape_t *tape, int minor)
tape->name[0] = 'h';
tape->name[1] = 't';
tape->name[2] = '0' + minor;
- tape->chrdev_direction = idetape_dir_none;
+ tape->chrdev_dir = idetape_dir_none;
tape->pc = tape->pc_stack;
- tape->max_insert_speed = 10000;
- tape->speed_control = 1;
+ tape->max_ins_speed = 10000;
+ tape->speed_ctl = 1;
*((unsigned short *) &gcw) = drive->id->config;
if (gcw.drq_type == 1)
set_bit(IDETAPE_DRQ_INTERRUPT, &tape->flags);
@@ -3675,11 +3658,11 @@ static void idetape_setup (ide_drive_t *drive, idetape_tape_t *tape, int minor)
idetape_get_mode_sense_results(drive);
ide_tape_get_bsize_from_bdesc(drive);
tape->user_bs_factor = 1;
- tape->stage_size = *ctl * tape->tape_block_size;
+ tape->stage_size = *ctl * tape->blk_sz;
while (tape->stage_size > 0xffff) {
printk(KERN_NOTICE "ide-tape: decreasing stage size\n");
*ctl /= 2;
- tape->stage_size = *ctl * tape->tape_block_size;
+ tape->stage_size = *ctl * tape->blk_sz;
}
stage_size = tape->stage_size;
tape->pages_per_stage = stage_size / PAGE_SIZE;
@@ -3718,14 +3701,16 @@ static void idetape_setup (ide_drive_t *drive, idetape_tape_t *tape, int minor)
* Ensure that the number we got makes sense; limit
* it within IDETAPE_DSC_RW_MIN and IDETAPE_DSC_RW_MAX.
*/
- tape->best_dsc_rw_frequency = max_t(unsigned long, min_t(unsigned long, t, IDETAPE_DSC_RW_MAX), IDETAPE_DSC_RW_MIN);
+ tape->best_dsc_rw_freq = max_t(ulong,
+ min_t(ulong, t, IDETAPE_DSC_RW_MAX),
+ IDETAPE_DSC_RW_MIN);
printk(KERN_INFO "ide-tape: %s <-> %s: %dKBps, %d*%dkB buffer, "
"%dkB pipeline, %lums tDSC%s\n",
drive->name, tape->name, *(u16 *)&tape->caps[14],
(*(u16 *)&tape->caps[16] * 512) / tape->stage_size,
tape->stage_size / 1024,
tape->max_stages * tape->stage_size / 1024,
- tape->best_dsc_rw_frequency * 1000 / HZ,
+ tape->best_dsc_rw_freq * 1000 / HZ,
drive->using_dma ? ", DMA":"");
idetape_add_settings(drive);
@@ -3748,7 +3733,7 @@ static void ide_tape_release(struct kref *kref)
ide_drive_t *drive = tape->drive;
struct gendisk *g = tape->disk;
- BUG_ON(tape->first_stage != NULL || tape->merge_stage_size);
+ BUG_ON(tape->first_stage != NULL || tape->merge_stage_sz);
drive->dsc_overlap = 0;
drive->driver_data = NULL;
--
1.5.3.7
-
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