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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-12-29 20:27:37 +0100
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-12-29 20:27:37 +0100
commite2984c628c924442132304ae662da433f41c05c9 (patch)
treec7ed2d995fbd96fc9e4cdd12c395640bd2e6fab5 /drivers/ide/ide-io.c
parent1d35364acbd5ab7d67bb39cfc5dd3ed0fbefb4b8 (diff)
downloadop-kernel-dev-e2984c628c924442132304ae662da433f41c05c9.zip
op-kernel-dev-e2984c628c924442132304ae662da433f41c05c9.tar.gz
ide: move Power Management support to ide-pm.c
There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-io.c')
-rw-r--r--drivers/ide/ide-io.c159
1 files changed, 0 insertions, 159 deletions
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 26d3f3c..ecacc00 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -120,98 +120,6 @@ int ide_end_request (ide_drive_t *drive, int uptodate, int nr_sectors)
}
EXPORT_SYMBOL(ide_end_request);
-static void ide_complete_power_step(ide_drive_t *drive, struct request *rq)
-{
- struct request_pm_state *pm = rq->data;
-
-#ifdef DEBUG_PM
- printk(KERN_INFO "%s: complete_power_step(step: %d)\n",
- drive->name, pm->pm_step);
-#endif
- if (drive->media != ide_disk)
- return;
-
- switch (pm->pm_step) {
- case IDE_PM_FLUSH_CACHE: /* Suspend step 1 (flush cache) */
- if (pm->pm_state == PM_EVENT_FREEZE)
- pm->pm_step = IDE_PM_COMPLETED;
- else
- pm->pm_step = IDE_PM_STANDBY;
- break;
- case IDE_PM_STANDBY: /* Suspend step 2 (standby) */
- pm->pm_step = IDE_PM_COMPLETED;
- break;
- case IDE_PM_RESTORE_PIO: /* Resume step 1 (restore PIO) */
- pm->pm_step = IDE_PM_IDLE;
- break;
- case IDE_PM_IDLE: /* Resume step 2 (idle)*/
- pm->pm_step = IDE_PM_RESTORE_DMA;
- break;
- }
-}
-
-static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq)
-{
- struct request_pm_state *pm = rq->data;
- ide_task_t *args = rq->special;
-
- memset(args, 0, sizeof(*args));
-
- switch (pm->pm_step) {
- case IDE_PM_FLUSH_CACHE: /* Suspend step 1 (flush cache) */
- if (drive->media != ide_disk)
- break;
- /* Not supported? Switch to next step now. */
- if (ata_id_flush_enabled(drive->id) == 0 ||
- (drive->dev_flags & IDE_DFLAG_WCACHE) == 0) {
- ide_complete_power_step(drive, rq);
- return ide_stopped;
- }
- if (ata_id_flush_ext_enabled(drive->id))
- args->tf.command = ATA_CMD_FLUSH_EXT;
- else
- args->tf.command = ATA_CMD_FLUSH;
- goto out_do_tf;
- case IDE_PM_STANDBY: /* Suspend step 2 (standby) */
- args->tf.command = ATA_CMD_STANDBYNOW1;
- goto out_do_tf;
- case IDE_PM_RESTORE_PIO: /* Resume step 1 (restore PIO) */
- ide_set_max_pio(drive);
- /*
- * skip IDE_PM_IDLE for ATAPI devices
- */
- if (drive->media != ide_disk)
- pm->pm_step = IDE_PM_RESTORE_DMA;
- else
- ide_complete_power_step(drive, rq);
- return ide_stopped;
- 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) */
- /*
- * 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->hwif->dma_ops == NULL)
- break;
- /*
- * TODO: respect IDE_DFLAG_USING_DMA
- */
- ide_set_dma(drive);
- break;
- }
-
- pm->pm_step = IDE_PM_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);
-}
-
/**
* ide_end_dequeued_request - complete an IDE I/O
* @drive: IDE device for the I/O
@@ -236,39 +144,6 @@ int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
}
EXPORT_SYMBOL_GPL(ide_end_dequeued_request);
-
-/**
- * ide_complete_pm_request - end the current Power Management request
- * @drive: target drive
- * @rq: request
- *
- * This function cleans up the current PM request and stops the queue
- * if necessary.
- */
-static void ide_complete_pm_request (ide_drive_t *drive, struct request *rq)
-{
- struct request_queue *q = drive->queue;
- unsigned long flags;
-
-#ifdef DEBUG_PM
- printk("%s: completing PM request, %s\n", drive->name,
- blk_pm_suspend_request(rq) ? "suspend" : "resume");
-#endif
- spin_lock_irqsave(q->queue_lock, flags);
- if (blk_pm_suspend_request(rq)) {
- blk_stop_queue(q);
- } else {
- drive->dev_flags &= ~IDE_DFLAG_BLOCKED;
- blk_start_queue(q);
- }
- spin_unlock_irqrestore(q->queue_lock, flags);
-
- drive->hwif->hwgroup->rq = NULL;
-
- if (blk_end_request(rq, 0, 0))
- BUG();
-}
-
/**
* ide_end_drive_cmd - end an explicit drive command
* @drive: command
@@ -697,40 +572,6 @@ static ide_startstop_t ide_special_rq(ide_drive_t *drive, struct request *rq)
}
}
-static void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
-{
- struct request_pm_state *pm = rq->data;
-
- if (blk_pm_suspend_request(rq) &&
- 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_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
- * just be POSTing itself.
- * We do that before even selecting as the "other" device on
- * 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, 35000);
- if (rc)
- printk(KERN_WARNING "%s: bus not ready on wakeup\n", drive->name);
- SELECT_DRIVE(drive);
- 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);
- }
-}
-
/**
* start_request - start of I/O and command issuing for IDE
*
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