* The following parameter is used to select the point in the internal
* tape fifo in which we will start to refill the buffer. Decreasing
* the following parameter will improve the system's latency and
- * interactive response, while using a high value might improve sytem
+ * interactive response, while using a high value might improve system
* throughput.
*/
#define IDETAPE_FIFO_THRESHOLD 2
/*************************** End of tunable parameters ***********************/
-/*
- * Debugging/Performance analysis
- *
- * I/O trace support
- */
-#define USE_IOTRACE 0
-#if USE_IOTRACE
-#include <linux/io_trace.h>
-#define IO_IDETAPE_FIFO 500
-#endif
-
/*
* Read/Write error simulation
*/
} idetape_chrdev_direction_t;
struct idetape_bh {
- unsigned short b_size;
+ u32 b_size;
atomic_t b_count;
struct idetape_bh *b_reqnext;
char *b_data;
if (error)
tape->failed_pc = NULL;
+ if (!blk_special_request(rq)) {
+ ide_end_request(drive, uptodate, nr_sects);
+ return 0;
+ }
+
spin_lock_irqsave(&tape->spinlock, flags);
/* The request was a pipelined data transfer request */
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc;
struct request *rq;
- atapi_error_t error;
- error.all = HWIF(drive)->INB(IDE_ERROR_REG);
+ (void)drive->hwif->INB(IDE_ERROR_REG);
pc = idetape_next_pc_storage(drive);
rq = idetape_next_rq_storage(drive);
idetape_create_request_sense_cmd(pc);
{
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
- atapi_status_t status;
- atapi_bcount_t bcount;
- atapi_ireason_t ireason;
idetape_pc_t *pc = tape->pc;
-
unsigned int temp;
#if SIMULATE_ERRORS
static int error_sim_count = 0;
#endif
+ u16 bcount;
+ u8 stat, ireason;
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 4)
#endif /* IDETAPE_DEBUG_LOG */
/* Clear the interrupt */
- status.all = HWIF(drive)->INB(IDE_STATUS_REG);
+ stat = hwif->INB(IDE_STATUS_REG);
if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
- if (HWIF(drive)->ide_dma_end(drive) || status.b.check) {
+ if (hwif->ide_dma_end(drive) || (stat & ERR_STAT)) {
/*
* A DMA error is sometimes expected. For example,
* if the tape is crossing a filemark during a
}
/* No more interrupts */
- if (!status.b.drq) {
+ if ((stat & DRQ_STAT) == 0) {
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 2)
printk(KERN_INFO "ide-tape: Packet command completed, %d bytes transferred\n", pc->actually_transferred);
(++error_sim_count % 100) == 0) {
printk(KERN_INFO "ide-tape: %s: simulating error\n",
tape->name);
- status.b.check = 1;
+ stat |= ERR_STAT;
}
#endif
- if (status.b.check && pc->c[0] == IDETAPE_REQUEST_SENSE_CMD)
- status.b.check = 0;
- if (status.b.check || test_bit(PC_DMA_ERROR, &pc->flags)) { /* Error detected */
+ if ((stat & ERR_STAT) && pc->c[0] == IDETAPE_REQUEST_SENSE_CMD)
+ stat &= ~ERR_STAT;
+ if ((stat & ERR_STAT) || test_bit(PC_DMA_ERROR, &pc->flags)) {
+ /* Error detected */
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 1)
printk(KERN_INFO "ide-tape: %s: I/O error\n",
}
pc->error = 0;
if (test_bit(PC_WAIT_FOR_DSC, &pc->flags) &&
- !status.b.dsc) {
+ (stat & SEEK_STAT) == 0) {
/* Media access command */
tape->dsc_polling_start = jiffies;
tape->dsc_polling_frequency = IDETAPE_DSC_MA_FAST;
return ide_do_reset(drive);
}
/* Get the number of bytes to transfer on this interrupt. */
- bcount.b.high = hwif->INB(IDE_BCOUNTH_REG);
- bcount.b.low = hwif->INB(IDE_BCOUNTL_REG);
+ bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) |
+ hwif->INB(IDE_BCOUNTL_REG);
- ireason.all = hwif->INB(IDE_IREASON_REG);
+ ireason = hwif->INB(IDE_IREASON_REG);
- if (ireason.b.cod) {
+ if (ireason & CD) {
printk(KERN_ERR "ide-tape: CoD != 0 in idetape_pc_intr\n");
return ide_do_reset(drive);
}
- if (ireason.b.io == test_bit(PC_WRITING, &pc->flags)) {
+ if (((ireason & IO) == IO) == test_bit(PC_WRITING, &pc->flags)) {
/* Hopefully, we will never get here */
printk(KERN_ERR "ide-tape: We wanted to %s, ",
- ireason.b.io ? "Write":"Read");
+ (ireason & IO) ? "Write" : "Read");
printk(KERN_ERR "ide-tape: but the tape wants us to %s !\n",
- ireason.b.io ? "Read":"Write");
+ (ireason & IO) ? "Read" : "Write");
return ide_do_reset(drive);
}
if (!test_bit(PC_WRITING, &pc->flags)) {
/* Reading - Check that we have enough space */
- temp = pc->actually_transferred + bcount.all;
+ temp = pc->actually_transferred + bcount;
if (temp > pc->request_transfer) {
if (temp > pc->buffer_size) {
printk(KERN_ERR "ide-tape: The tape wants to send us more data than expected - discarding data\n");
- idetape_discard_data(drive, bcount.all);
+ idetape_discard_data(drive, bcount);
ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL);
return ide_started;
}
}
if (test_bit(PC_WRITING, &pc->flags)) {
if (pc->bh != NULL)
- idetape_output_buffers(drive, pc, bcount.all);
+ idetape_output_buffers(drive, pc, bcount);
else
/* Write the current buffer */
- HWIF(drive)->atapi_output_bytes(drive, pc->current_position, bcount.all);
+ hwif->atapi_output_bytes(drive, pc->current_position,
+ bcount);
} else {
if (pc->bh != NULL)
- idetape_input_buffers(drive, pc, bcount.all);
+ idetape_input_buffers(drive, pc, bcount);
else
/* Read the current buffer */
- HWIF(drive)->atapi_input_bytes(drive, pc->current_position, bcount.all);
+ hwif->atapi_input_bytes(drive, pc->current_position,
+ bcount);
}
/* Update the current position */
- pc->actually_transferred += bcount.all;
- pc->current_position += bcount.all;
+ pc->actually_transferred += bcount;
+ pc->current_position += bcount;
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 2)
- printk(KERN_INFO "ide-tape: [cmd %x] transferred %d bytes on that interrupt\n", pc->c[0], bcount.all);
+ printk(KERN_INFO "ide-tape: [cmd %x] transferred %d bytes "
+ "on that interrupt\n", pc->c[0], bcount);
#endif
/* And set the interrupt handler again */
ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL);
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc = tape->pc;
- atapi_ireason_t ireason;
int retries = 100;
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");
return startstop;
}
- ireason.all = hwif->INB(IDE_IREASON_REG);
- while (retries-- && (!ireason.b.cod || ireason.b.io)) {
+ ireason = hwif->INB(IDE_IREASON_REG);
+ while (retries-- && ((ireason & CD) == 0 || (ireason & IO))) {
printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while issuing "
"a packet command, retrying\n");
udelay(100);
- ireason.all = hwif->INB(IDE_IREASON_REG);
+ ireason = hwif->INB(IDE_IREASON_REG);
if (retries == 0) {
printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while "
"issuing a packet command, ignoring\n");
- ireason.b.cod = 1;
- ireason.b.io = 0;
+ ireason |= CD;
+ ireason &= ~IO;
}
}
- if (!ireason.b.cod || ireason.b.io) {
+ if ((ireason & CD) == 0 || (ireason & IO)) {
printk(KERN_ERR "ide-tape: (IO,CoD) != (0,1) while issuing "
"a packet command\n");
return ide_do_reset(drive);
{
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
- atapi_bcount_t bcount;
int dma_ok = 0;
+ u16 bcount;
#if IDETAPE_DEBUG_BUGS
if (tape->pc->c[0] == IDETAPE_REQUEST_SENSE_CMD &&
pc->actually_transferred = 0;
pc->current_position = pc->buffer;
/* Request to transfer the entire buffer at once */
- bcount.all = pc->request_transfer;
+ bcount = pc->request_transfer;
if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) {
printk(KERN_WARNING "ide-tape: DMA disabled, "
if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
dma_ok = !hwif->dma_setup(drive);
- if (IDE_CONTROL_REG)
- hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
- hwif->OUTB(dma_ok ? 1 : 0, IDE_FEATURE_REG); /* Use PIO/DMA */
- hwif->OUTB(bcount.b.high, IDE_BCOUNTH_REG);
- hwif->OUTB(bcount.b.low, IDE_BCOUNTL_REG);
- hwif->OUTB(drive->select.all, IDE_SELECT_REG);
+ ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
+ IDE_TFLAG_OUT_DEVICE, bcount, dma_ok);
+
if (dma_ok) /* Will begin DMA later */
set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
if (test_bit(IDETAPE_DRQ_INTERRUPT, &tape->flags)) {
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc = tape->pc;
- atapi_status_t status;
+ u8 stat;
- status.all = HWIF(drive)->INB(IDE_STATUS_REG);
- if (status.b.dsc) {
- if (status.b.check) {
+ stat = drive->hwif->INB(IDE_STATUS_REG);
+ if (stat & SEEK_STAT) {
+ if (stat & ERR_STAT) {
/* Error detected */
if (pc->c[0] != IDETAPE_TEST_UNIT_READY_CMD)
printk(KERN_ERR "ide-tape: %s: I/O error, ",
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc = NULL;
struct request *postponed_rq = tape->postponed_rq;
- atapi_status_t status;
+ u8 stat;
#if IDETAPE_DEBUG_LOG
#if 0
* If the tape is still busy, postpone our request and service
* the other device meanwhile.
*/
- status.all = HWIF(drive)->INB(IDE_STATUS_REG);
+ stat = drive->hwif->INB(IDE_STATUS_REG);
if (!drive->dsc_overlap && !(rq->cmd[0] & REQ_IDETAPE_PC2))
set_bit(IDETAPE_IGNORE_DSC, &tape->flags);
tape->insert_speed = tape->insert_size / 1024 * HZ / (jiffies - tape->insert_time);
calculate_speeds(drive);
if (!test_and_clear_bit(IDETAPE_IGNORE_DSC, &tape->flags) &&
- !status.b.dsc) {
+ (stat & SEEK_STAT) == 0) {
if (postponed_rq == NULL) {
tape->dsc_polling_start = jiffies;
tape->dsc_polling_frequency = tape->best_dsc_rw_frequency;
}
if (rq->cmd[0] & REQ_IDETAPE_READ) {
tape->buffer_head++;
-#if USE_IOTRACE
- IO_trace(IO_IDETAPE_FIFO, tape->pipeline_head, tape->buffer_head, tape->tape_head, tape->minor);
-#endif
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);
}
if (rq->cmd[0] & REQ_IDETAPE_WRITE) {
tape->buffer_head++;
-#if USE_IOTRACE
- IO_trace(IO_IDETAPE_FIFO, tape->pipeline_head, tape->buffer_head, tape->tape_head, tape->minor);
-#endif
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_switch_buffers(tape, new_stage);
idetape_add_stage_tail(drive, new_stage);
tape->pipeline_head++;
-#if USE_IOTRACE
- IO_trace(IO_IDETAPE_FIFO, tape->pipeline_head, tape->buffer_head, tape->tape_head, tape->minor);
-#endif
calculate_speeds(drive);
/*
idetape_remove_stage_head(drive);
spin_unlock_irqrestore(&tape->spinlock, flags);
tape->pipeline_head++;
-#if USE_IOTRACE
- IO_trace(IO_IDETAPE_FIFO, tape->pipeline_head, tape->buffer_head, tape->tape_head, tape->minor);
-#endif
calculate_speeds(drive);
}
#if IDETAPE_DEBUG_BUGS
printk(KERN_INFO "ide-tape: Adjusted block size - %d\n", tape->tape_block_size);
#endif /* IDETAPE_DEBUG_INFO */
}
+
+#ifdef CONFIG_IDE_PROC_FS
static void idetape_add_settings (ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
/*
- * drive setting name read/write ioctl ioctl data type min max mul_factor div_factor data pointer set function
+ * drive setting name read/write data type min max mul_factor div_factor data pointer set function
*/
- ide_add_setting(drive, "buffer", SETTING_READ, -1, -1, TYPE_SHORT, 0, 0xffff, 1, 2, &tape->capabilities.buffer_size, NULL);
- ide_add_setting(drive, "pipeline_min", SETTING_RW, -1, -1, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->min_pipeline, NULL);
- ide_add_setting(drive, "pipeline", SETTING_RW, -1, -1, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_stages, NULL);
- ide_add_setting(drive, "pipeline_max", SETTING_RW, -1, -1, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_pipeline, NULL);
- ide_add_setting(drive, "pipeline_used",SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_stages, NULL);
- ide_add_setting(drive, "pipeline_pending",SETTING_READ,-1, -1, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_pending_stages, NULL);
- ide_add_setting(drive, "speed", SETTING_READ, -1, -1, TYPE_SHORT, 0, 0xffff, 1, 1, &tape->capabilities.speed, NULL);
- ide_add_setting(drive, "stage", SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, 1, 1024, &tape->stage_size, NULL);
- ide_add_setting(drive, "tdsc", SETTING_RW, -1, -1, TYPE_INT, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX, 1000, HZ, &tape->best_dsc_rw_frequency, NULL);
- ide_add_setting(drive, "dsc_overlap", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
- ide_add_setting(drive, "pipeline_head_speed_c",SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, 1, 1, &tape->controlled_pipeline_head_speed, NULL);
- ide_add_setting(drive, "pipeline_head_speed_u",SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, 1, 1, &tape->uncontrolled_pipeline_head_speed, NULL);
- ide_add_setting(drive, "avg_speed", SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, 1, 1, &tape->avg_speed, NULL);
- ide_add_setting(drive, "debug_level",SETTING_RW, -1, -1, TYPE_INT, 0, 0xffff, 1, 1, &tape->debug_level, NULL);
+ ide_add_setting(drive, "buffer", SETTING_READ, TYPE_SHORT, 0, 0xffff, 1, 2, &tape->capabilities.buffer_size, 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, &tape->capabilities.speed, 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, "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_level", SETTING_RW, TYPE_INT, 0, 0xffff, 1, 1, &tape->debug_level, NULL);
}
+#else
+static inline void idetape_add_settings(ide_drive_t *drive) { ; }
+#endif
/*
* ide_setup is called to:
{
idetape_tape_t *tape = drive->driver_data;
- ide_unregister_subdriver(drive, tape->driver);
+ ide_proc_unregister_driver(drive, tape->driver);
ide_unregister_region(tape->disk);
drive->dsc_overlap = 0;
drive->driver_data = NULL;
- class_device_destroy(idetape_sysfs_class,
- MKDEV(IDETAPE_MAJOR, tape->minor));
- class_device_destroy(idetape_sysfs_class,
- MKDEV(IDETAPE_MAJOR, tape->minor + 128));
+ device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor));
+ device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor + 128));
idetape_devs[tape->minor] = NULL;
g->private_data = NULL;
put_disk(g);
kfree(tape);
}
-#ifdef CONFIG_PROC_FS
-
+#ifdef CONFIG_IDE_PROC_FS
static int proc_idetape_read_name
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
{ "name", S_IFREG|S_IRUGO, proc_idetape_read_name, NULL },
{ NULL, 0, NULL, NULL }
};
-
-#else
-
-#define idetape_proc NULL
-
#endif
static int ide_tape_probe(ide_drive_t *);
.end_request = idetape_end_request,
.error = __ide_error,
.abort = __ide_abort,
+#ifdef CONFIG_IDE_PROC_FS
.proc = idetape_proc,
+#endif
};
/*
ide_init_disk(g, drive);
- ide_register_subdriver(drive, &idetape_driver);
+ ide_proc_register_driver(drive, &idetape_driver);
kref_init(&tape->kref);
idetape_setup(drive, tape, minor);
- class_device_create(idetape_sysfs_class, NULL,
- MKDEV(IDETAPE_MAJOR, minor), &drive->gendev, "%s", tape->name);
- class_device_create(idetape_sysfs_class, NULL,
- MKDEV(IDETAPE_MAJOR, minor + 128), &drive->gendev, "n%s", tape->name);
+ device_create(idetape_sysfs_class, &drive->gendev,
+ MKDEV(IDETAPE_MAJOR, minor), "%s", tape->name);
+ device_create(idetape_sysfs_class, &drive->gendev,
+ MKDEV(IDETAPE_MAJOR, minor + 128), "n%s", tape->name);
g->fops = &idetape_block_ops;
ide_register_region(g);
git.openpandora.org / pandora-kernel.git / blobdiff