* 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;
+ if ((drive->dev_flags & IDE_DFLAG_DMA_PIO_RETRY) &&
+ drive->retry_pio <= 3) {
+ drive->dev_flags &= ~IDE_DFLAG_DMA_PIO_RETRY;
ide_dma_on(drive);
}
}
EXPORT_SYMBOL(ide_end_request);
-/*
- * Power Management state machine. This one is rather trivial for now,
- * we should probably add more, like switching back to PIO on suspend
- * to help some BIOSes, re-do the door locking on resume, etc...
- */
-
-enum {
- ide_pm_flush_cache = ide_pm_state_start_suspend,
- idedisk_pm_standby,
-
- idedisk_pm_restore_pio = ide_pm_state_start_resume,
- idedisk_pm_idle,
- ide_pm_restore_dma,
-};
-
static void ide_complete_power_step(ide_drive_t *drive, struct request *rq, u8 stat, u8 error)
{
struct request_pm_state *pm = rq->data;
return;
switch (pm->pm_step) {
- case ide_pm_flush_cache: /* Suspend step 1 (flush cache) complete */
+ case IDE_PM_FLUSH_CACHE: /* Suspend step 1 (flush cache) */
if (pm->pm_state == PM_EVENT_FREEZE)
- pm->pm_step = ide_pm_state_completed;
+ pm->pm_step = IDE_PM_COMPLETED;
else
- pm->pm_step = idedisk_pm_standby;
+ pm->pm_step = IDE_PM_STANDBY;
break;
- case idedisk_pm_standby: /* Suspend step 2 (standby) complete */
- pm->pm_step = ide_pm_state_completed;
+ case IDE_PM_STANDBY: /* Suspend step 2 (standby) */
+ pm->pm_step = IDE_PM_COMPLETED;
break;
- case idedisk_pm_restore_pio: /* Resume step 1 complete */
- pm->pm_step = idedisk_pm_idle;
+ case IDE_PM_RESTORE_PIO: /* Resume step 1 (restore PIO) */
+ pm->pm_step = IDE_PM_IDLE;
break;
- case idedisk_pm_idle: /* Resume step 2 (idle) complete */
- pm->pm_step = ide_pm_restore_dma;
+ case IDE_PM_IDLE: /* Resume step 2 (idle)*/
+ pm->pm_step = IDE_PM_RESTORE_DMA;
break;
}
}
memset(args, 0, sizeof(*args));
switch (pm->pm_step) {
- case ide_pm_flush_cache: /* Suspend step 1 (flush cache) */
+ case IDE_PM_FLUSH_CACHE: /* Suspend step 1 (flush cache) */
if (drive->media != ide_disk)
break;
/* Not supported? Switch to next step now. */
else
args->tf.command = ATA_CMD_FLUSH;
goto out_do_tf;
-
- case idedisk_pm_standby: /* Suspend step 2 (standby) */
+ case IDE_PM_STANDBY: /* Suspend step 2 (standby) */
args->tf.command = ATA_CMD_STANDBYNOW1;
goto out_do_tf;
-
- case idedisk_pm_restore_pio: /* Resume step 1 (restore PIO) */
+ case IDE_PM_RESTORE_PIO: /* Resume step 1 (restore PIO) */
ide_set_max_pio(drive);
/*
- * skip idedisk_pm_idle for ATAPI devices
+ * skip IDE_PM_IDLE for ATAPI devices
*/
if (drive->media != ide_disk)
- pm->pm_step = ide_pm_restore_dma;
+ 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) */
+ case IDE_PM_IDLE: /* Resume step 2 (idle) */
args->tf.command = ATA_CMD_IDLEIMMEDIATE;
goto out_do_tf;
-
- case ide_pm_restore_dma: /* Resume step 3 (restore DMA) */
+ case IDE_PM_RESTORE_DMA: /* Resume step 3 (restore DMA) */
/*
* Right now, all we do is call ide_set_dma(drive),
* we could be smarter and check for current xfer_speed
ide_set_dma(drive);
break;
}
- pm->pm_step = ide_pm_state_completed;
+
+ pm->pm_step = IDE_PM_COMPLETED;
return ide_stopped;
out_do_tf:
drive->name, rq->pm->pm_step, stat, err);
#endif
ide_complete_power_step(drive, rq, stat, err);
- if (pm->pm_step == ide_pm_state_completed)
+ if (pm->pm_step == IDE_PM_COMPLETED)
ide_complete_pm_request(drive, rq);
return;
}
} else if (stat & ATA_ERR) {
/* err has different meaning on cdrom and tape */
if (err == ATA_ABORTED) {
- if (drive->select.b.lba &&
+ if ((drive->dev_flags & IDE_DFLAG_LBA) &&
/* some newer drives don't support ATA_CMD_INIT_DEV_PARAMS */
hwif->tp_ops->read_status(hwif) == ATA_CMD_INIT_DEV_PARAMS)
return ide_stopped;
tf->lbal = drive->sect;
tf->lbam = drive->cyl;
tf->lbah = drive->cyl >> 8;
- tf->device = ((drive->head - 1) | drive->select.all) & ~ATA_LBA;
+ tf->device = (drive->head - 1) | drive->select.all;
tf->command = ATA_CMD_INIT_DEV_PARAMS;
}
struct request_pm_state *pm = rq->data;
if (blk_pm_suspend_request(rq) &&
- pm->pm_step == ide_pm_state_start_suspend)
+ pm->pm_step == IDE_PM_START_SUSPEND)
/* Mark drive blocked when starting the suspend sequence. */
drive->dev_flags |= IDE_DFLAG_BLOCKED;
else if (blk_pm_resume_request(rq) &&
- pm->pm_step == ide_pm_state_start_resume) {
+ pm->pm_step == IDE_PM_START_RESUME) {
/*
* The first thing we do on wakeup is to wait for BSY bit to
* go away (with a looong timeout) as a drive on this hwif may
#endif
startstop = ide_start_power_step(drive, rq);
if (startstop == ide_stopped &&
- pm->pm_step == ide_pm_state_completed)
+ pm->pm_step == IDE_PM_COMPLETED)
ide_complete_pm_request(drive, rq);
return startstop;
} else if (!rq->rq_disk && blk_special_request(rq))
* a timeout -- we'll reenable after we finish this next request
* (or rather the first chunk of it) in pio.
*/
+ drive->dev_flags |= IDE_DFLAG_DMA_PIO_RETRY;
drive->retry_pio++;
- drive->state = DMA_PIO_RETRY;
ide_dma_off_quietly(drive);
/*
projects / linux-2.6-omap-h63xx.git / blobdiff