diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/ide/ide-tape.c | 210 |
1 files changed, 113 insertions, 97 deletions
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index ad13527..2fe4e8f 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -299,10 +299,8 @@ 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; /* @@ -310,7 +308,7 @@ typedef struct ide_tape_obj { */ u8 partition; /* Current block */ - unsigned int first_frame_position; + unsigned int first_frame; /* * Last error information @@ -326,11 +324,8 @@ typedef struct ide_tape_obj { /* Current character device data transfer direction */ u8 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_size; int user_bs_factor; /* Copy of the tape's Capabilities and Mechanical Page */ @@ -349,8 +344,8 @@ typedef struct ide_tape_obj { * 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; + /* Ptr to the request which is waiting in the device request queue */ + struct request *active_data_rq; /* Data buffer size (chosen based on the tape's recommendation */ int stage_size; idetape_stage_t *merge_stage; @@ -388,7 +383,7 @@ 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 lock; /* * Measures average tape speed @@ -750,7 +745,7 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense) /* Correct pc->actually_transferred by asking the tape. */ if (test_bit(PC_DMA_ERROR, &pc->flags)) { pc->actually_transferred = pc->request_transfer - - tape->tape_block_size * + tape->blk_size * be32_to_cpu(get_unaligned((u32 *)&sense[3])); idetape_update_buffers(pc); } @@ -809,7 +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->active_data_rq = rq; tape->active_stage = stage; tape->next_stage = stage->next; } @@ -951,13 +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->lock, flags); /* The request was a pipelined data transfer request */ - if (tape->active_data_request == rq) { + if (tape->active_data_rq == rq) { active_stage = tape->active_stage; tape->active_stage = NULL; - tape->active_data_request = NULL; + tape->active_data_rq = NULL; tape->nr_pending_stages--; if (rq->cmd[0] & REQ_IDETAPE_WRITE) { remove_stage = 1; @@ -978,7 +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->active_data_rq, + ide_end); } else if (!error) { idetape_increase_max_pipeline_stages(drive); } @@ -990,9 +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->active_data_rq == NULL) clear_bit(IDETAPE_PIPELINE_ACTIVE, &tape->flags); - spin_unlock_irqrestore(&tape->spinlock, flags); + spin_unlock_irqrestore(&tape->lock, flags); return 0; } @@ -1089,7 +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); } typedef void idetape_io_buf(ide_drive_t *, idetape_pc_t *, unsigned int); @@ -1190,7 +1186,7 @@ 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); @@ -1543,10 +1539,10 @@ 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->actually_transferred / tape->tape_block_size; + int blocks = tape->pc->actually_transferred / tape->blk_size; - tape->avg_size += blocks * tape->tape_block_size; - tape->insert_size += blocks * tape->tape_block_size; + tape->avg_size += blocks * tape->blk_size; + tape->insert_size += blocks * tape->blk_size; if (tape->insert_size > 1024 * 1024) tape->measure_insert_time = 1; if (tape->measure_insert_time) { @@ -1563,7 +1559,7 @@ static ide_startstop_t idetape_rw_callback (ide_drive_t *drive) } debug_log(DBG_PROCS, "Enter %s\n", __func__); - tape->first_frame_position += blocks; + tape->first_frame += blocks; rq->current_nr_sectors -= blocks; if (!tape->pc->error) @@ -1583,7 +1579,8 @@ 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->request_transfer = pc->buffer_size = length * tape->tape_block_size; + pc->buffer_size = length * tape->blk_size; + pc->request_transfer = pc->buffer_size; if (pc->request_transfer == tape->stage_size) set_bit(PC_DMA_RECOMMENDED, &pc->flags); } @@ -1621,7 +1618,8 @@ 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->request_transfer = pc->buffer_size = length * tape->tape_block_size; + pc->buffer_size = length * tape->blk_size; + pc->request_transfer = pc->buffer_size; if (pc->request_transfer == tape->stage_size) set_bit(PC_DMA_RECOMMENDED, &pc->flags); } @@ -1689,7 +1687,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, (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", @@ -1701,7 +1699,7 @@ 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; } @@ -1748,7 +1746,7 @@ 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->active_data_rq != NULL); return rc1; } @@ -1930,7 +1928,7 @@ 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->lock, flags); stage->next = NULL; if (tape->last_stage != NULL) tape->last_stage->next=stage; @@ -1941,7 +1939,7 @@ 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->lock, flags); } /* @@ -1962,10 +1960,10 @@ 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->lock); wait_for_completion(&wait); /* The stage and its struct request have been deallocated */ - spin_lock_irq(&tape->spinlock); + spin_lock_irq(&tape->lock); } static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive) @@ -1991,7 +1989,7 @@ 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_frame = be32_to_cpu(*(u32 *)&readpos[4]); set_bit(IDETAPE_ADDRESS_VALID, &tape->flags); idetape_end_request(drive, 1, 0); @@ -2133,7 +2131,7 @@ 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_frame; return position; } @@ -2173,7 +2171,7 @@ static int __idetape_discard_read_pipeline (ide_drive_t *drive) return 0; /* Remove merge stage. */ - cnt = tape->merge_stage_size / tape->tape_block_size; + cnt = tape->merge_stage_size / tape->blk_size; if (test_and_clear_bit(IDETAPE_FILEMARK, &tape->flags)) ++cnt; /* Filemarks count as 1 sector */ tape->merge_stage_size = 0; @@ -2190,11 +2188,11 @@ static int __idetape_discard_read_pipeline (ide_drive_t *drive) if (tape->first_stage == NULL) return 0; - spin_lock_irqsave(&tape->spinlock, flags); + spin_lock_irqsave(&tape->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->active_data_rq); + spin_unlock_irqrestore(&tape->lock, flags); while (tape->first_stage != NULL) { struct request *rq_ptr = &tape->first_stage->rq; @@ -2273,7 +2271,7 @@ 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_frame; rq.nr_sectors = rq.current_nr_sectors = blocks; (void) ide_do_drive_cmd(drive, &rq, ide_wait); @@ -2284,7 +2282,7 @@ 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_size * (blocks-rq.current_nr_sectors)); } /* @@ -2300,7 +2298,7 @@ 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->active_data_rq, ide_end); } } @@ -2346,10 +2344,10 @@ 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->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->active_data_rq); + spin_unlock_irqrestore(&tape->lock, flags); } /* @@ -2377,12 +2375,12 @@ 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->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->active_data_rq); + spin_unlock_irqrestore(&tape->lock, flags); } else { - spin_unlock_irqrestore(&tape->spinlock, flags); + spin_unlock_irqrestore(&tape->lock, flags); idetape_insert_pipeline_into_queue(drive); if (idetape_pipeline_active(tape)) continue; @@ -2396,7 +2394,7 @@ 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_frame; rq->nr_sectors = rq->current_nr_sectors = blocks; idetape_switch_buffers(tape, new_stage); @@ -2413,7 +2411,9 @@ 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->nr_stages >= tape->max_stages - + tape->uncontrolled_pipeline_head_speed * 3 * 1024 / + tape->blk_size) { tape->measure_insert_time = 1; tape->insert_time = jiffies; tape->insert_size = 0; @@ -2438,10 +2438,10 @@ 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->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->active_data_rq); + spin_unlock_irqrestore(&tape->lock, flags); } } @@ -2460,12 +2460,13 @@ static void idetape_empty_write_pipeline (ide_drive_t *drive) tape->merge_stage_size = 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) { + blocks = tape->merge_stage_size / tape->blk_size; + if (tape->merge_stage_size % tape->blk_size) { unsigned int i; blocks++; - i = tape->tape_block_size - tape->merge_stage_size % tape->tape_block_size; + i = tape->blk_size - tape->merge_stage_size % + tape->blk_size; bh = tape->bh->b_reqnext; while (bh) { atomic_set(&bh->b_count, 0); @@ -2571,7 +2572,7 @@ static int idetape_initiate_read (ide_drive_t *drive, int max_stages) if (tape->restart_speed_control_req) idetape_restart_speed_control(drive); idetape_init_rq(&rq, REQ_IDETAPE_READ); - rq.sector = tape->first_frame_position; + rq.sector = tape->first_frame; rq.nr_sectors = rq.current_nr_sectors = blocks; if (!test_bit(IDETAPE_PIPELINE_ERROR, &tape->flags) && tape->nr_stages < max_stages) { @@ -2624,11 +2625,13 @@ static int idetape_add_chrdev_read_request (ide_drive_t *drive,int blocks) if (tape->first_stage == NULL) { if (test_bit(IDETAPE_PIPELINE_ERROR, &tape->flags)) return 0; - return idetape_queue_rw_tail(drive, REQ_IDETAPE_READ, blocks, tape->merge_stage->bh); + return idetape_queue_rw_tail(drive, REQ_IDETAPE_READ, blocks, + tape->merge_stage->bh); } 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_size * (rq_ptr->nr_sectors - + rq_ptr->current_nr_sectors); rq_ptr->nr_sectors = rq_ptr->current_nr_sectors = 0; @@ -2638,15 +2641,15 @@ 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->lock, flags); idetape_remove_stage_head(drive); - spin_unlock_irqrestore(&tape->spinlock, flags); + spin_unlock_irqrestore(&tape->lock, flags); tape->pipeline_head++; idetape_calculate_speeds(drive); } - if (bytes_read > blocks * tape->tape_block_size) { + if (bytes_read > blocks * tape->blk_size) { 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_size; } return (bytes_read); } @@ -2663,7 +2666,7 @@ 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_size; while (count) { atomic_set(&bh->b_count, min(count, (unsigned int)bh->b_size)); memset(bh->b_data, 0, atomic_read(&bh->b_count)); @@ -2685,9 +2688,10 @@ 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_size * (rq->nr_sectors - + rq->current_nr_sectors); if (rq->errors == IDETAPE_ERROR_FILEMARK) - size += tape->tape_block_size; + size += tape->blk_size; stage = stage->next; } size += tape->merge_stage_size; @@ -2744,11 +2748,11 @@ static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd, unsigned l case 0x0340: if (copy_from_user(&config, argp, sizeof(config))) 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(config))) return -EFAULT; @@ -2798,7 +2802,7 @@ 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->lock, flags); if (tape->first_stage == tape->active_stage) { /* * We have reached the active stage in the read pipeline. @@ -2810,11 +2814,11 @@ 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->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->lock, flags); if (tape->first_stage->rq.errors == IDETAPE_ERROR_FILEMARK) ++count; idetape_remove_stage_head(drive); @@ -2876,9 +2880,9 @@ static ssize_t idetape_chrdev_read (struct file *file, char __user *buf, 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_size && + (count % tape->blk_size) == 0) + tape->user_bs_factor = count / tape->blk_size; } if ((rc = idetape_initiate_read(drive, tape->max_stages)) < 0) return rc; @@ -3115,9 +3119,11 @@ 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_size || + mt_count % tape->blk_size) return -EIO; - tape->user_bs_factor = mt_count / tape->tape_block_size; + tape->user_bs_factor = mt_count / + tape->blk_size; clear_bit(IDETAPE_DETECT_BS, &tape->flags); } else set_bit(IDETAPE_DETECT_BS, &tape->flags); @@ -3164,7 +3170,7 @@ static int idetape_chrdev_ioctl(struct inode *inode, struct file *file, 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_frame; void __user *argp = (void __user *)arg; debug_log(DBG_CHRDEV, "Enter %s, cmd=%u\n", __func__, cmd); @@ -3175,7 +3181,8 @@ static int idetape_chrdev_ioctl(struct inode *inode, struct file *file, 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_size * tape->user_bs_factor); if ((position = idetape_read_position(drive)) < 0) return -EIO; } @@ -3188,7 +3195,10 @@ static int idetape_chrdev_ioctl(struct inode *inode, struct file *file, 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_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); } @@ -3219,14 +3229,14 @@ 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_size == 0) { printk(KERN_WARNING "ide-tape: Cannot deal with zero " "block size, assuming 32k\n"); - tape->tape_block_size = 32768; + tape->blk_size = 32768; } return; } - tape->tape_block_size = (pc.buffer[4 + 5] << 16) + + tape->blk_size = (pc.buffer[4 + 5] << 16) + (pc.buffer[4 + 6] << 8) + pc.buffer[4 + 7]; tape->drv_write_prot = (pc.buffer[2] & 0x80) >> 7; @@ -3328,7 +3338,8 @@ 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_size * + (tape->user_bs_factor - 1)); __idetape_kfree_stage(tape->merge_stage); tape->merge_stage = NULL; } @@ -3456,7 +3467,7 @@ 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_size = 512; put_unaligned(52, (u16 *)&tape->caps[12]); put_unaligned(540, (u16 *)&tape->caps[14]); put_unaligned(6*52, (u16 *)&tape->caps[16]); @@ -3486,9 +3497,9 @@ 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_size = 512; else if (caps[7] & 0x04) - tape->tape_block_size = 1024; + tape->blk_size = 1024; } #ifdef CONFIG_IDE_PROC_FS @@ -3508,8 +3519,11 @@ static void idetape_add_settings (ide_drive_t *drive) 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, 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, "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_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); @@ -3542,7 +3556,7 @@ 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->lock); drive->dsc_overlap = 1; if (drive->hwif->host_flags & IDE_HFLAG_NO_DSC) { printk(KERN_INFO "ide-tape: %s: disabling DSC overlap\n", @@ -3570,11 +3584,11 @@ 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_size; 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_size; } stage_size = tape->stage_size; tape->pages_per_stage = stage_size / PAGE_SIZE; @@ -3613,14 +3627,16 @@ 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(unsigned long, + min_t(unsigned long, 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); |