#include <linux/device.h>
#include <linux/kmod.h>
#include <linux/scatterlist.h>
+#include <linux/bitops.h>
#include <asm/byteorder.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/io.h>
-#include <asm/bitops.h>
static int __ide_end_request(ide_drive_t *drive, struct request *rq,
- int uptodate, int nr_sectors)
+ int uptodate, unsigned int nr_bytes, int dequeue)
{
int ret = 1;
+ int error = 0;
+
+ if (uptodate <= 0)
+ error = uptodate ? uptodate : -EIO;
/*
* if failfast is set on a request, override number of sectors and
* complete the whole request right now
*/
- if (blk_noretry_request(rq) && end_io_error(uptodate))
- nr_sectors = rq->hard_nr_sectors;
+ if (blk_noretry_request(rq) && error)
+ nr_bytes = rq->hard_nr_sectors << 9;
- if (!blk_fs_request(rq) && end_io_error(uptodate) && !rq->errors)
+ if (!blk_fs_request(rq) && error && !rq->errors)
rq->errors = -EIO;
/*
*/
if (drive->state == DMA_PIO_RETRY && drive->retry_pio <= 3) {
drive->state = 0;
- HWGROUP(drive)->hwif->ide_dma_on(drive);
+ ide_dma_on(drive);
}
- if (!end_that_request_first(rq, uptodate, nr_sectors)) {
- add_disk_randomness(rq->rq_disk);
- if (!list_empty(&rq->queuelist))
- blkdev_dequeue_request(rq);
- HWGROUP(drive)->rq = NULL;
- end_that_request_last(rq, uptodate);
+ if (!__blk_end_request(rq, error, nr_bytes)) {
+ if (dequeue)
+ HWGROUP(drive)->rq = NULL;
ret = 0;
}
int ide_end_request (ide_drive_t *drive, int uptodate, int nr_sectors)
{
+ unsigned int nr_bytes = nr_sectors << 9;
struct request *rq;
unsigned long flags;
int ret = 1;
spin_lock_irqsave(&ide_lock, flags);
rq = HWGROUP(drive)->rq;
- if (!nr_sectors)
- nr_sectors = rq->hard_cur_sectors;
+ if (!nr_bytes) {
+ if (blk_pc_request(rq))
+ nr_bytes = rq->data_len;
+ else
+ nr_bytes = rq->hard_cur_sectors << 9;
+ }
- ret = __ide_end_request(drive, rq, uptodate, nr_sectors);
+ ret = __ide_end_request(drive, rq, uptodate, nr_bytes, 1);
spin_unlock_irqrestore(&ide_lock, flags);
return ret;
memset(args, 0, sizeof(*args));
- if (drive->media != ide_disk) {
- /*
- * skip idedisk_pm_restore_pio and idedisk_pm_idle for ATAPI
- * devices
- */
- if (pm->pm_step == idedisk_pm_restore_pio)
- pm->pm_step = ide_pm_restore_dma;
- }
-
switch (pm->pm_step) {
case ide_pm_flush_cache: /* Suspend step 1 (flush cache) */
if (drive->media != ide_disk)
return ide_stopped;
}
if (ide_id_has_flush_cache_ext(drive->id))
- args->tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE_EXT;
+ args->tf.command = WIN_FLUSH_CACHE_EXT;
else
- args->tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE;
- args->command_type = IDE_DRIVE_TASK_NO_DATA;
- args->handler = &task_no_data_intr;
- return do_rw_taskfile(drive, args);
+ args->tf.command = WIN_FLUSH_CACHE;
+ goto out_do_tf;
case idedisk_pm_standby: /* Suspend step 2 (standby) */
- args->tfRegister[IDE_COMMAND_OFFSET] = WIN_STANDBYNOW1;
- args->command_type = IDE_DRIVE_TASK_NO_DATA;
- args->handler = &task_no_data_intr;
- return do_rw_taskfile(drive, args);
+ args->tf.command = WIN_STANDBYNOW1;
+ goto out_do_tf;
case idedisk_pm_restore_pio: /* Resume step 1 (restore PIO) */
- if (drive->hwif->tuneproc != NULL)
- drive->hwif->tuneproc(drive, 255);
- ide_complete_power_step(drive, rq, 0, 0);
+ ide_set_max_pio(drive);
+ /*
+ * skip idedisk_pm_idle for ATAPI devices
+ */
+ if (drive->media != ide_disk)
+ pm->pm_step = ide_pm_restore_dma;
+ else
+ ide_complete_power_step(drive, rq, 0, 0);
return ide_stopped;
case idedisk_pm_idle: /* Resume step 2 (idle) */
- args->tfRegister[IDE_COMMAND_OFFSET] = WIN_IDLEIMMEDIATE;
- args->command_type = IDE_DRIVE_TASK_NO_DATA;
- args->handler = task_no_data_intr;
- return do_rw_taskfile(drive, args);
+ args->tf.command = WIN_IDLEIMMEDIATE;
+ goto out_do_tf;
case ide_pm_restore_dma: /* Resume step 3 (restore DMA) */
/*
- * Right now, all we do is call hwif->ide_dma_check(drive),
+ * Right now, all we do is call ide_set_dma(drive),
* we could be smarter and check for current xfer_speed
* in struct drive etc...
*/
- if ((drive->id->capability & 1) == 0)
- break;
- if (drive->hwif->ide_dma_check == NULL)
+ if (drive->hwif->dma_ops == NULL)
break;
+ /*
+ * TODO: respect ->using_dma setting
+ */
ide_set_dma(drive);
break;
}
pm->pm_step = ide_pm_state_completed;
return ide_stopped;
+
+out_do_tf:
+ args->tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
+ args->data_phase = TASKFILE_NO_DATA;
+ return do_rw_taskfile(drive, args);
}
/**
int uptodate, int nr_sectors)
{
unsigned long flags;
- int ret = 1;
+ int ret;
spin_lock_irqsave(&ide_lock, flags);
-
BUG_ON(!blk_rq_started(rq));
-
- /*
- * if failfast is set on a request, override number of sectors and
- * complete the whole request right now
- */
- if (blk_noretry_request(rq) && end_io_error(uptodate))
- nr_sectors = rq->hard_nr_sectors;
-
- if (!blk_fs_request(rq) && end_io_error(uptodate) && !rq->errors)
- rq->errors = -EIO;
-
- /*
- * decide whether to reenable DMA -- 3 is a random magic for now,
- * if we DMA timeout more than 3 times, just stay in PIO
- */
- if (drive->state == DMA_PIO_RETRY && drive->retry_pio <= 3) {
- drive->state = 0;
- HWGROUP(drive)->hwif->ide_dma_on(drive);
- }
-
- if (!end_that_request_first(rq, uptodate, nr_sectors)) {
- add_disk_randomness(rq->rq_disk);
- if (blk_rq_tagged(rq))
- blk_queue_end_tag(drive->queue, rq);
- end_that_request_last(rq, uptodate);
- ret = 0;
- }
+ ret = __ide_end_request(drive, rq, uptodate, nr_sectors << 9, 0);
spin_unlock_irqrestore(&ide_lock, flags);
+
return ret;
}
EXPORT_SYMBOL_GPL(ide_end_dequeued_request);
drive->blocked = 0;
blk_start_queue(drive->queue);
}
- blkdev_dequeue_request(rq);
HWGROUP(drive)->rq = NULL;
- end_that_request_last(rq, 1);
+ if (__blk_end_request(rq, 0, 0))
+ BUG();
spin_unlock_irqrestore(&ide_lock, flags);
}
-/*
- * FIXME: probably move this somewhere else, name is bad too :)
- */
-u64 ide_get_error_location(ide_drive_t *drive, char *args)
-{
- u32 high, low;
- u8 hcyl, lcyl, sect;
- u64 sector;
-
- high = 0;
- hcyl = args[5];
- lcyl = args[4];
- sect = args[3];
-
- if (ide_id_has_flush_cache_ext(drive->id)) {
- low = (hcyl << 16) | (lcyl << 8) | sect;
- HWIF(drive)->OUTB(drive->ctl|0x80, IDE_CONTROL_REG);
- high = ide_read_24(drive);
- } else {
- u8 cur = HWIF(drive)->INB(IDE_SELECT_REG);
- if (cur & 0x40) {
- high = cur & 0xf;
- low = (hcyl << 16) | (lcyl << 8) | sect;
- } else {
- low = hcyl * drive->head * drive->sect;
- low += lcyl * drive->sect;
- low += sect - 1;
- }
- }
-
- sector = ((u64) high << 24) | low;
- return sector;
-}
-EXPORT_SYMBOL(ide_get_error_location);
-
/**
* ide_end_drive_cmd - end an explicit drive command
* @drive: command
void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
{
- ide_hwif_t *hwif = HWIF(drive);
unsigned long flags;
struct request *rq;
rq = HWGROUP(drive)->rq;
spin_unlock_irqrestore(&ide_lock, flags);
- if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
- u8 *args = (u8 *) rq->buffer;
- if (rq->errors == 0)
- rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+ ide_task_t *task = (ide_task_t *)rq->special;
- if (args) {
- args[0] = stat;
- args[1] = err;
- args[2] = hwif->INB(IDE_NSECTOR_REG);
- }
- } else if (rq->cmd_type == REQ_TYPE_ATA_TASK) {
- u8 *args = (u8 *) rq->buffer;
- if (rq->errors == 0)
- rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
-
- if (args) {
- args[0] = stat;
- args[1] = err;
- args[2] = hwif->INB(IDE_NSECTOR_REG);
- args[3] = hwif->INB(IDE_SECTOR_REG);
- args[4] = hwif->INB(IDE_LCYL_REG);
- args[5] = hwif->INB(IDE_HCYL_REG);
- args[6] = hwif->INB(IDE_SELECT_REG);
- }
- } else if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
- ide_task_t *args = (ide_task_t *) rq->special;
if (rq->errors == 0)
- rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
-
- if (args) {
- if (args->tf_in_flags.b.data) {
- u16 data = hwif->INW(IDE_DATA_REG);
- args->tfRegister[IDE_DATA_OFFSET] = (data) & 0xFF;
- args->hobRegister[IDE_DATA_OFFSET] = (data >> 8) & 0xFF;
- }
- args->tfRegister[IDE_ERROR_OFFSET] = err;
- /* be sure we're looking at the low order bits */
- hwif->OUTB(drive->ctl & ~0x80, IDE_CONTROL_REG);
- args->tfRegister[IDE_NSECTOR_OFFSET] = hwif->INB(IDE_NSECTOR_REG);
- args->tfRegister[IDE_SECTOR_OFFSET] = hwif->INB(IDE_SECTOR_REG);
- args->tfRegister[IDE_LCYL_OFFSET] = hwif->INB(IDE_LCYL_REG);
- args->tfRegister[IDE_HCYL_OFFSET] = hwif->INB(IDE_HCYL_REG);
- args->tfRegister[IDE_SELECT_OFFSET] = hwif->INB(IDE_SELECT_REG);
- args->tfRegister[IDE_STATUS_OFFSET] = stat;
-
- if (drive->addressing == 1) {
- hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG);
- args->hobRegister[IDE_FEATURE_OFFSET] = hwif->INB(IDE_FEATURE_REG);
- args->hobRegister[IDE_NSECTOR_OFFSET] = hwif->INB(IDE_NSECTOR_REG);
- args->hobRegister[IDE_SECTOR_OFFSET] = hwif->INB(IDE_SECTOR_REG);
- args->hobRegister[IDE_LCYL_OFFSET] = hwif->INB(IDE_LCYL_REG);
- args->hobRegister[IDE_HCYL_OFFSET] = hwif->INB(IDE_HCYL_REG);
- }
+ rq->errors = !OK_STAT(stat, READY_STAT, BAD_STAT);
+
+ if (task) {
+ struct ide_taskfile *tf = &task->tf;
+
+ tf->error = err;
+ tf->status = stat;
+
+ drive->hwif->tp_ops->tf_read(drive, task);
+
+ if (task->tf_flags & IDE_TFLAG_DYN)
+ kfree(task);
}
} else if (blk_pm_request(rq)) {
struct request_pm_state *pm = rq->data;
}
spin_lock_irqsave(&ide_lock, flags);
- blkdev_dequeue_request(rq);
HWGROUP(drive)->rq = NULL;
rq->errors = err;
- end_that_request_last(rq, !rq->errors);
+ if (unlikely(__blk_end_request(rq, (rq->errors ? -EIO : 0),
+ blk_rq_bytes(rq))))
+ BUG();
spin_unlock_irqrestore(&ide_lock, flags);
}
EXPORT_SYMBOL(ide_end_drive_cmd);
-/**
- * try_to_flush_leftover_data - flush junk
- * @drive: drive to flush
- *
- * try_to_flush_leftover_data() is invoked in response to a drive
- * unexpectedly having its DRQ_STAT bit set. As an alternative to
- * resetting the drive, this routine tries to clear the condition
- * by read a sector's worth of data from the drive. Of course,
- * this may not help if the drive is *waiting* for data from *us*.
- */
-static void try_to_flush_leftover_data (ide_drive_t *drive)
-{
- int i = (drive->mult_count ? drive->mult_count : 1) * SECTOR_WORDS;
-
- if (drive->media != ide_disk)
- return;
- while (i > 0) {
- u32 buffer[16];
- u32 wcount = (i > 16) ? 16 : i;
-
- i -= wcount;
- HWIF(drive)->ata_input_data(drive, buffer, wcount);
- }
-}
-
static void ide_kill_rq(ide_drive_t *drive, struct request *rq)
{
if (rq->rq_disk) {
if (err == ABRT_ERR) {
if (drive->select.b.lba &&
/* some newer drives don't support WIN_SPECIFY */
- hwif->INB(IDE_COMMAND_REG) == WIN_SPECIFY)
+ hwif->tp_ops->read_status(hwif) == WIN_SPECIFY)
return ide_stopped;
} else if ((err & BAD_CRC) == BAD_CRC) {
/* UDMA crc error, just retry the operation */
}
}
- if ((stat & DRQ_STAT) && rq_data_dir(rq) == READ && hwif->err_stops_fifo == 0)
- try_to_flush_leftover_data(drive);
+ if ((stat & DRQ_STAT) && rq_data_dir(rq) == READ &&
+ (hwif->host_flags & IDE_HFLAG_ERROR_STOPS_FIFO) == 0) {
+ int nsect = drive->mult_count ? drive->mult_count : 1;
+
+ ide_pad_transfer(drive, READ, nsect * SECTOR_SIZE);
+ }
if (rq->errors >= ERROR_MAX || blk_noretry_request(rq)) {
ide_kill_rq(drive, rq);
return ide_stopped;
}
- if (hwif->INB(IDE_STATUS_REG) & (BUSY_STAT|DRQ_STAT))
+ if (hwif->tp_ops->read_status(hwif) & (BUSY_STAT | DRQ_STAT))
rq->errors |= ERROR_RESET;
if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
/* add decoding error stuff */
}
- if (hwif->INB(IDE_STATUS_REG) & (BUSY_STAT|DRQ_STAT))
+ if (hwif->tp_ops->read_status(hwif) & (BUSY_STAT | DRQ_STAT))
/* force an abort */
- hwif->OUTB(WIN_IDLEIMMEDIATE, IDE_COMMAND_REG);
+ hwif->tp_ops->exec_command(hwif, WIN_IDLEIMMEDIATE);
if (rq->errors >= ERROR_MAX) {
ide_kill_rq(drive, rq);
EXPORT_SYMBOL_GPL(ide_error);
-ide_startstop_t __ide_abort(ide_drive_t *drive, struct request *rq)
+static void ide_tf_set_specify_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
{
- if (drive->media != ide_disk)
- rq->errors |= ERROR_RESET;
-
- ide_kill_rq(drive, rq);
-
- return ide_stopped;
+ tf->nsect = drive->sect;
+ tf->lbal = drive->sect;
+ tf->lbam = drive->cyl;
+ tf->lbah = drive->cyl >> 8;
+ tf->device = ((drive->head - 1) | drive->select.all) & ~ATA_LBA;
+ tf->command = WIN_SPECIFY;
}
-EXPORT_SYMBOL_GPL(__ide_abort);
-
-/**
- * ide_abort - abort pending IDE operations
- * @drive: drive the error occurred on
- * @msg: message to report
- *
- * ide_abort kills and cleans up when we are about to do a
- * host initiated reset on active commands. Longer term we
- * want handlers to have sensible abort handling themselves
- *
- * This differs fundamentally from ide_error because in
- * this case the command is doing just fine when we
- * blow it away.
- */
-
-ide_startstop_t ide_abort(ide_drive_t *drive, const char *msg)
+static void ide_tf_set_restore_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
{
- struct request *rq;
-
- if (drive == NULL || (rq = HWGROUP(drive)->rq) == NULL)
- return ide_stopped;
-
- /* retry only "normal" I/O: */
- if (!blk_fs_request(rq)) {
- rq->errors = 1;
- ide_end_drive_cmd(drive, BUSY_STAT, 0);
- return ide_stopped;
- }
-
- if (rq->rq_disk) {
- ide_driver_t *drv;
-
- drv = *(ide_driver_t **)rq->rq_disk->private_data;
- return drv->abort(drive, rq);
- } else
- return __ide_abort(drive, rq);
+ tf->nsect = drive->sect;
+ tf->command = WIN_RESTORE;
}
-/**
- * ide_cmd - issue a simple drive command
- * @drive: drive the command is for
- * @cmd: command byte
- * @nsect: sector byte
- * @handler: handler for the command completion
- *
- * Issue a simple drive command with interrupts.
- * The drive must be selected beforehand.
- */
-
-static void ide_cmd (ide_drive_t *drive, u8 cmd, u8 nsect,
- ide_handler_t *handler)
-{
- ide_hwif_t *hwif = HWIF(drive);
- if (IDE_CONTROL_REG)
- hwif->OUTB(drive->ctl,IDE_CONTROL_REG); /* clear nIEN */
- SELECT_MASK(drive,0);
- hwif->OUTB(nsect,IDE_NSECTOR_REG);
- ide_execute_command(drive, cmd, handler, WAIT_CMD, NULL);
-}
-
-/**
- * drive_cmd_intr - drive command completion interrupt
- * @drive: drive the completion interrupt occurred on
- *
- * drive_cmd_intr() is invoked on completion of a special DRIVE_CMD.
- * We do any necessary data reading and then wait for the drive to
- * go non busy. At that point we may read the error data and complete
- * the request
- */
-
-static ide_startstop_t drive_cmd_intr (ide_drive_t *drive)
-{
- struct request *rq = HWGROUP(drive)->rq;
- ide_hwif_t *hwif = HWIF(drive);
- u8 *args = (u8 *) rq->buffer;
- u8 stat = hwif->INB(IDE_STATUS_REG);
- int retries = 10;
-
- local_irq_enable_in_hardirq();
- if ((stat & DRQ_STAT) && args && args[3]) {
- u8 io_32bit = drive->io_32bit;
- drive->io_32bit = 0;
- hwif->ata_input_data(drive, &args[4], args[3] * SECTOR_WORDS);
- drive->io_32bit = io_32bit;
- while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
- udelay(100);
- }
-
- if (!OK_STAT(stat, READY_STAT, BAD_STAT))
- return ide_error(drive, "drive_cmd", stat);
- /* calls ide_end_drive_cmd */
- ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG));
- return ide_stopped;
-}
-
-static void ide_init_specify_cmd(ide_drive_t *drive, ide_task_t *task)
-{
- task->tfRegister[IDE_NSECTOR_OFFSET] = drive->sect;
- task->tfRegister[IDE_SECTOR_OFFSET] = drive->sect;
- task->tfRegister[IDE_LCYL_OFFSET] = drive->cyl;
- task->tfRegister[IDE_HCYL_OFFSET] = drive->cyl>>8;
- task->tfRegister[IDE_SELECT_OFFSET] = ((drive->head-1)|drive->select.all)&0xBF;
- task->tfRegister[IDE_COMMAND_OFFSET] = WIN_SPECIFY;
-
- task->handler = &set_geometry_intr;
-}
-
-static void ide_init_restore_cmd(ide_drive_t *drive, ide_task_t *task)
-{
- task->tfRegister[IDE_NSECTOR_OFFSET] = drive->sect;
- task->tfRegister[IDE_COMMAND_OFFSET] = WIN_RESTORE;
-
- task->handler = &recal_intr;
-}
-
-static void ide_init_setmult_cmd(ide_drive_t *drive, ide_task_t *task)
+static void ide_tf_set_setmult_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
{
- task->tfRegister[IDE_NSECTOR_OFFSET] = drive->mult_req;
- task->tfRegister[IDE_COMMAND_OFFSET] = WIN_SETMULT;
-
- task->handler = &set_multmode_intr;
+ tf->nsect = drive->mult_req;
+ tf->command = WIN_SETMULT;
}
static ide_startstop_t ide_disk_special(ide_drive_t *drive)
ide_task_t args;
memset(&args, 0, sizeof(ide_task_t));
- args.command_type = IDE_DRIVE_TASK_NO_DATA;
+ args.data_phase = TASKFILE_NO_DATA;
if (s->b.set_geometry) {
s->b.set_geometry = 0;
- ide_init_specify_cmd(drive, &args);
+ ide_tf_set_specify_cmd(drive, &args.tf);
} else if (s->b.recalibrate) {
s->b.recalibrate = 0;
- ide_init_restore_cmd(drive, &args);
+ ide_tf_set_restore_cmd(drive, &args.tf);
} else if (s->b.set_multmode) {
s->b.set_multmode = 0;
if (drive->mult_req > drive->id->max_multsect)
drive->mult_req = drive->id->max_multsect;
- ide_init_setmult_cmd(drive, &args);
+ ide_tf_set_setmult_cmd(drive, &args.tf);
} else if (s->all) {
int special = s->all;
s->all = 0;
return ide_stopped;
}
+ args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE |
+ IDE_TFLAG_CUSTOM_HANDLER;
+
do_rw_taskfile(drive, &args);
return ide_started;
}
+/*
+ * handle HDIO_SET_PIO_MODE ioctl abusers here, eventually it will go away
+ */
+static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
+{
+ switch (req_pio) {
+ case 202:
+ case 201:
+ case 200:
+ case 102:
+ case 101:
+ case 100:
+ return (hwif->host_flags & IDE_HFLAG_ABUSE_DMA_MODES) ? 1 : 0;
+ case 9:
+ case 8:
+ return (hwif->host_flags & IDE_HFLAG_ABUSE_PREFETCH) ? 1 : 0;
+ case 7:
+ case 6:
+ return (hwif->host_flags & IDE_HFLAG_ABUSE_FAST_DEVSEL) ? 1 : 0;
+ default:
+ return 0;
+ }
+}
+
/**
* do_special - issue some special commands
* @drive: drive the command is for
printk("%s: do_special: 0x%02x\n", drive->name, s->all);
#endif
if (s->b.set_tune) {
+ ide_hwif_t *hwif = drive->hwif;
+ const struct ide_port_ops *port_ops = hwif->port_ops;
+ u8 req_pio = drive->tune_req;
+
s->b.set_tune = 0;
- if (HWIF(drive)->tuneproc != NULL)
- HWIF(drive)->tuneproc(drive, drive->tune_req);
+
+ if (set_pio_mode_abuse(drive->hwif, req_pio)) {
+ /*
+ * take ide_lock for drive->[no_]unmask/[no_]io_32bit
+ */
+ if (req_pio == 8 || req_pio == 9) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&ide_lock, flags);
+ port_ops->set_pio_mode(drive, req_pio);
+ spin_unlock_irqrestore(&ide_lock, flags);
+ } else
+ port_ops->set_pio_mode(drive, req_pio);
+ } else {
+ int keep_dma = drive->using_dma;
+
+ ide_set_pio(drive, req_pio);
+
+ if (hwif->host_flags & IDE_HFLAG_SET_PIO_MODE_KEEP_DMA) {
+ if (keep_dma)
+ ide_dma_on(drive);
+ }
+ }
+
return ide_stopped;
} else {
if (drive->media == ide_disk)
ide_hwif_t *hwif = drive->hwif;
hwif->nsect = hwif->nleft = rq->nr_sectors;
- hwif->cursg = hwif->cursg_ofs = 0;
+ hwif->cursg_ofs = 0;
+ hwif->cursg = NULL;
}
EXPORT_SYMBOL_GPL(ide_init_sg_cmd);
struct request *rq)
{
ide_hwif_t *hwif = HWIF(drive);
- if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
- ide_task_t *args = rq->special;
-
- if (!args)
- goto done;
+ ide_task_t *task = rq->special;
- hwif->data_phase = args->data_phase;
+ if (task) {
+ hwif->data_phase = task->data_phase;
switch (hwif->data_phase) {
case TASKFILE_MULTI_OUT:
break;
}
- if (args->tf_out_flags.all != 0)
- return flagged_taskfile(drive, args);
- return do_rw_taskfile(drive, args);
- } else if (rq->cmd_type == REQ_TYPE_ATA_TASK) {
- u8 *args = rq->buffer;
- u8 sel;
-
- if (!args)
- goto done;
-#ifdef DEBUG
- printk("%s: DRIVE_TASK_CMD ", drive->name);
- printk("cmd=0x%02x ", args[0]);
- printk("fr=0x%02x ", args[1]);
- printk("ns=0x%02x ", args[2]);
- printk("sc=0x%02x ", args[3]);
- printk("lcyl=0x%02x ", args[4]);
- printk("hcyl=0x%02x ", args[5]);
- printk("sel=0x%02x\n", args[6]);
-#endif
- hwif->OUTB(args[1], IDE_FEATURE_REG);
- hwif->OUTB(args[3], IDE_SECTOR_REG);
- hwif->OUTB(args[4], IDE_LCYL_REG);
- hwif->OUTB(args[5], IDE_HCYL_REG);
- sel = (args[6] & ~0x10);
- if (drive->select.b.unit)
- sel |= 0x10;
- hwif->OUTB(sel, IDE_SELECT_REG);
- ide_cmd(drive, args[0], args[2], &drive_cmd_intr);
- return ide_started;
- } else if (rq->cmd_type == REQ_TYPE_ATA_CMD) {
- u8 *args = rq->buffer;
-
- if (!args)
- goto done;
-#ifdef DEBUG
- printk("%s: DRIVE_CMD ", drive->name);
- printk("cmd=0x%02x ", args[0]);
- printk("sc=0x%02x ", args[1]);
- printk("fr=0x%02x ", args[2]);
- printk("xx=0x%02x\n", args[3]);
-#endif
- if (args[0] == WIN_SMART) {
- hwif->OUTB(0x4f, IDE_LCYL_REG);
- hwif->OUTB(0xc2, IDE_HCYL_REG);
- hwif->OUTB(args[2],IDE_FEATURE_REG);
- hwif->OUTB(args[1],IDE_SECTOR_REG);
- ide_cmd(drive, args[0], args[3], &drive_cmd_intr);
- return ide_started;
- }
- hwif->OUTB(args[2],IDE_FEATURE_REG);
- ide_cmd(drive, args[0], args[1], &drive_cmd_intr);
- return ide_started;
- }
-
-done:
+ return do_rw_taskfile(drive, task);
+ }
+
/*
* NULL is actually a valid way of waiting for
* all current requests to be flushed from the queue.
#ifdef DEBUG
printk("%s: DRIVE_CMD (null)\n", drive->name);
#endif
- ide_end_drive_cmd(drive,
- hwif->INB(IDE_STATUS_REG),
- hwif->INB(IDE_ERROR_REG));
+ ide_end_drive_cmd(drive, hwif->tp_ops->read_status(hwif),
+ ide_read_error(drive));
+
return ide_stopped;
}
+static ide_startstop_t ide_special_rq(ide_drive_t *drive, struct request *rq)
+{
+ switch (rq->cmd[0]) {
+ case REQ_DRIVE_RESET:
+ return ide_do_reset(drive);
+ default:
+ blk_dump_rq_flags(rq, "ide_special_rq - bad request");
+ ide_end_request(drive, 0, 0);
+ return ide_stopped;
+ }
+}
+
static void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->data;
* the bus may be broken enough to walk on our toes at this
* point.
*/
+ ide_hwif_t *hwif = drive->hwif;
int rc;
#ifdef DEBUG_PM
printk("%s: Wakeup request inited, waiting for !BSY...\n", drive->name);
#endif
- rc = ide_wait_not_busy(HWIF(drive), 35000);
+ rc = ide_wait_not_busy(hwif, 35000);
if (rc)
printk(KERN_WARNING "%s: bus not ready on wakeup\n", drive->name);
SELECT_DRIVE(drive);
- HWIF(drive)->OUTB(8, HWIF(drive)->io_ports[IDE_CONTROL_OFFSET]);
- rc = ide_wait_not_busy(HWIF(drive), 100000);
+ hwif->tp_ops->set_irq(hwif, 1);
+ rc = ide_wait_not_busy(hwif, 100000);
if (rc)
printk(KERN_WARNING "%s: drive not ready on wakeup\n", drive->name);
}
/* bail early if we've exceeded max_failures */
if (drive->max_failures && (drive->failures > drive->max_failures)) {
+ rq->cmd_flags |= REQ_FAILED;
goto kill_rq;
}
if (drive->current_speed == 0xff)
ide_config_drive_speed(drive, drive->desired_speed);
- if (rq->cmd_type == REQ_TYPE_ATA_CMD ||
- rq->cmd_type == REQ_TYPE_ATA_TASK ||
- rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
return execute_drive_cmd(drive, rq);
else if (blk_pm_request(rq)) {
struct request_pm_state *pm = rq->data;
pm->pm_step == ide_pm_state_completed)
ide_complete_pm_request(drive, rq);
return startstop;
- }
+ } else if (!rq->rq_disk && blk_special_request(rq))
+ /*
+ * TODO: Once all ULDs have been modified to
+ * check for specific op codes rather than
+ * blindly accepting any special request, the
+ * check for ->rq_disk above may be replaced
+ * by a more suitable mechanism or even
+ * dropped entirely.
+ */
+ return ide_special_rq(drive, rq);
drv = *(ide_driver_t **)rq->rq_disk->private_data;
return drv->do_request(drive, rq, block);
}
again:
hwif = HWIF(drive);
- if (hwgroup->hwif->sharing_irq &&
- hwif != hwgroup->hwif &&
- hwif->io_ports[IDE_CONTROL_OFFSET]) {
- /* set nIEN for previous hwif */
- SELECT_INTERRUPT(drive);
+ if (hwgroup->hwif->sharing_irq && hwif != hwgroup->hwif) {
+ /*
+ * set nIEN for previous hwif, drives in the
+ * quirk_list may not like intr setups/cleanups
+ */
+ if (drive->quirk_list != 1)
+ hwif->tp_ops->set_irq(hwif, 0);
}
hwgroup->hwif = hwif;
hwgroup->drive = drive;
/*
* Passes the stuff to ide_do_request
*/
-void do_ide_request(request_queue_t *q)
+void do_ide_request(struct request_queue *q)
{
ide_drive_t *drive = q->queuedata;
if (error < 0) {
printk(KERN_WARNING "%s: DMA timeout error\n", drive->name);
- (void)HWIF(drive)->ide_dma_end(drive);
+ (void)hwif->dma_ops->dma_end(drive);
ret = ide_error(drive, "dma timeout error",
- hwif->INB(IDE_STATUS_REG));
+ hwif->tp_ops->read_status(hwif));
} else {
printk(KERN_WARNING "%s: DMA timeout retry\n", drive->name);
- (void) hwif->ide_dma_timeout(drive);
+ hwif->dma_ops->dma_timeout(drive);
}
/*
*/
drive->retry_pio++;
drive->state = DMA_PIO_RETRY;
- hwif->dma_off_quietly(drive);
+ ide_dma_off_quietly(drive);
/*
* un-busy drive etc (hwgroup->busy is cleared on return) and
*/
spin_unlock(&ide_lock);
hwif = HWIF(drive);
-#if DISABLE_IRQ_NOSYNC
- disable_irq_nosync(hwif->irq);
-#else
/* disable_irq_nosync ?? */
disable_irq(hwif->irq);
-#endif /* DISABLE_IRQ_NOSYNC */
/* local CPU only,
* as if we were handling an interrupt */
local_irq_disable();
startstop = handler(drive);
} else if (drive_is_ready(drive)) {
if (drive->waiting_for_dma)
- (void) hwgroup->hwif->ide_dma_lostirq(drive);
+ hwif->dma_ops->dma_lost_irq(drive);
(void)ide_ack_intr(hwif);
printk(KERN_WARNING "%s: lost interrupt\n", drive->name);
startstop = handler(drive);
startstop = ide_dma_timeout_retry(drive, wait);
} else
startstop =
- ide_error(drive, "irq timeout", hwif->INB(IDE_STATUS_REG));
+ ide_error(drive, "irq timeout",
+ hwif->tp_ops->read_status(hwif));
}
drive->service_time = jiffies - drive->service_start;
spin_lock_irq(&ide_lock);
*/
do {
if (hwif->irq == irq) {
- stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
+ stat = hwif->tp_ops->read_status(hwif);
+
if (!OK_STAT(stat, READY_STAT, BAD_STAT)) {
/* Try to not flood the console with msgs */
static unsigned long last_msgtime, count;
* remove all the ifdef PCI crap
*/
#ifdef CONFIG_BLK_DEV_IDEPCI
- if (hwif->pci_dev && !hwif->pci_dev->vendor)
+ if (hwif->chipset != ide_pci)
#endif /* CONFIG_BLK_DEV_IDEPCI */
{
/*
* Whack the status register, just in case
* we have a leftover pending IRQ.
*/
- (void) hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
+ (void)hwif->tp_ops->read_status(hwif);
#endif /* CONFIG_BLK_DEV_IDEPCI */
}
spin_unlock_irqrestore(&ide_lock, flags);
}
/**
- * ide_init_drive_cmd - initialize a drive command request
- * @rq: request object
- *
- * Initialize a request before we fill it in and send it down to
- * ide_do_drive_cmd. Commands must be set up by this function. Right
- * now it doesn't do a lot, but if that changes abusers will have a
- * nasty surprise.
- */
-
-void ide_init_drive_cmd (struct request *rq)
-{
- memset(rq, 0, sizeof(*rq));
- rq->cmd_type = REQ_TYPE_ATA_CMD;
- rq->ref_count = 1;
-}
-
-EXPORT_SYMBOL(ide_init_drive_cmd);
-
-/**
* ide_do_drive_cmd - issue IDE special command
* @drive: device to issue command
* @rq: request to issue
- * @action: action for processing
*
* This function issues a special IDE device request
* onto the request queue.
*
- * If action is ide_wait, then the rq is queued at the end of the
- * request queue, and the function sleeps until it has been processed.
- * This is for use when invoked from an ioctl handler.
- *
- * If action is ide_preempt, then the rq is queued at the head of
- * the request queue, displacing the currently-being-processed
- * request and this function returns immediately without waiting
- * for the new rq to be completed. This is VERY DANGEROUS, and is
- * intended for careful use by the ATAPI tape/cdrom driver code.
- *
- * If action is ide_end, then the rq is queued at the end of the
- * request queue, and the function returns immediately without waiting
- * for the new rq to be completed. This is again intended for careful
- * use by the ATAPI tape/cdrom driver code.
+ * the rq is queued at the head of the request queue, displacing
+ * the currently-being-processed request and this function
+ * returns immediately without waiting for the new rq to be
+ * completed. This is VERY DANGEROUS, and is intended for
+ * careful use by the ATAPI tape/cdrom driver code.
*/
-
-int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t action)
+
+void ide_do_drive_cmd(ide_drive_t *drive, struct request *rq)
{
unsigned long flags;
ide_hwgroup_t *hwgroup = HWGROUP(drive);
- DECLARE_COMPLETION_ONSTACK(wait);
- int where = ELEVATOR_INSERT_BACK, err;
- int must_wait = (action == ide_wait || action == ide_head_wait);
-
- rq->errors = 0;
-
- /*
- * we need to hold an extra reference to request for safe inspection
- * after completion
- */
- if (must_wait) {
- rq->ref_count++;
- rq->end_io_data = &wait;
- rq->end_io = blk_end_sync_rq;
- }
spin_lock_irqsave(&ide_lock, flags);
- if (action == ide_preempt)
- hwgroup->rq = NULL;
- if (action == ide_preempt || action == ide_head_wait) {
- where = ELEVATOR_INSERT_FRONT;
- rq->cmd_flags |= REQ_PREEMPT;
- }
- __elv_add_request(drive->queue, rq, where, 0);
- ide_do_request(hwgroup, IDE_NO_IRQ);
+ hwgroup->rq = NULL;
+ __elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 1);
+ __generic_unplug_device(drive->queue);
spin_unlock_irqrestore(&ide_lock, flags);
+}
- err = 0;
- if (must_wait) {
- wait_for_completion(&wait);
- if (rq->errors)
- err = -EIO;
-
- blk_put_request(rq);
- }
+EXPORT_SYMBOL(ide_do_drive_cmd);
- return err;
+void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount, u8 dma)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ ide_task_t task;
+
+ memset(&task, 0, sizeof(task));
+ task.tf_flags = IDE_TFLAG_OUT_LBAH | IDE_TFLAG_OUT_LBAM |
+ IDE_TFLAG_OUT_FEATURE | tf_flags;
+ task.tf.feature = dma; /* Use PIO/DMA */
+ task.tf.lbam = bcount & 0xff;
+ task.tf.lbah = (bcount >> 8) & 0xff;
+
+ ide_tf_dump(drive->name, &task.tf);
+ hwif->tp_ops->set_irq(hwif, 1);
+ SELECT_MASK(drive, 0);
+ hwif->tp_ops->tf_load(drive, &task);
}
-EXPORT_SYMBOL(ide_do_drive_cmd);
+EXPORT_SYMBOL_GPL(ide_pktcmd_tf_load);
+
+void ide_pad_transfer(ide_drive_t *drive, int write, int len)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ u8 buf[4] = { 0 };
+
+ while (len > 0) {
+ if (write)
+ hwif->tp_ops->output_data(drive, NULL, buf, min(4, len));
+ else
+ hwif->tp_ops->input_data(drive, NULL, buf, min(4, len));
+ len -= 4;
+ }
+}
+EXPORT_SYMBOL_GPL(ide_pad_transfer);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff