}
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)
+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) 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. */
if (ata_id_flush_enabled(drive->id) == 0 ||
(drive->dev_flags & IDE_DFLAG_WCACHE) == 0) {
- ide_complete_power_step(drive, rq, 0, 0);
+ ide_complete_power_step(drive, rq);
return ide_stopped;
}
if (ata_id_flush_ext_enabled(drive->id))
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);
+ ide_complete_power_step(drive, rq);
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:
}
} else if (blk_pm_request(rq)) {
struct request_pm_state *pm = rq->data;
-#ifdef DEBUG_PM
- printk("%s: complete_power_step(step: %d, stat: %x, err: %x)\n",
- 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)
+
+ ide_complete_power_step(drive, rq);
+ 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;
tf->command = ATA_CMD_INIT_DEV_PARAMS;
}
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
#ifdef DEBUG
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 (set_pio_mode_abuse(drive->hwif, req_pio)) {
- /*
- * take ide_lock for IDE_DFLAG_[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->dev_flags & IDE_DFLAG_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)
- return ide_disk_special(drive);
+ if (drive->media == ide_disk)
+ return ide_disk_special(drive);
- s->all = 0;
- drive->mult_req = 0;
- return ide_stopped;
- }
+ s->all = 0;
+ drive->mult_req = 0;
+ return ide_stopped;
}
void ide_map_sg(ide_drive_t *drive, struct request *rq)
if (!(setting->flags & DS_SYNC))
return setting->set(drive, arg);
- rq = blk_get_request(q, READ, GFP_KERNEL);
- if (!rq)
- return -ENOMEM;
-
+ rq = blk_get_request(q, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_SPECIAL;
rq->cmd_len = 5;
rq->cmd[0] = REQ_DEVSET_EXEC;
static ide_startstop_t ide_special_rq(ide_drive_t *drive, struct request *rq)
{
- switch (rq->cmd[0]) {
+ u8 cmd = rq->cmd[0];
+
+ if (cmd == REQ_PARK_HEADS || cmd == REQ_UNPARK_HEADS) {
+ ide_task_t task;
+ struct ide_taskfile *tf = &task.tf;
+
+ memset(&task, 0, sizeof(task));
+ if (cmd == REQ_PARK_HEADS) {
+ drive->sleep = *(unsigned long *)rq->special;
+ drive->dev_flags |= IDE_DFLAG_SLEEPING;
+ tf->command = ATA_CMD_IDLEIMMEDIATE;
+ tf->feature = 0x44;
+ tf->lbal = 0x4c;
+ tf->lbam = 0x4e;
+ tf->lbah = 0x55;
+ task.tf_flags |= IDE_TFLAG_CUSTOM_HANDLER;
+ } else /* cmd == REQ_UNPARK_HEADS */
+ tf->command = ATA_CMD_CHK_POWER;
+
+ task.tf_flags |= IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
+ task.rq = rq;
+ drive->hwif->data_phase = task.data_phase = TASKFILE_NO_DATA;
+ return do_rw_taskfile(drive, &task);
+ }
+
+ switch (cmd) {
case REQ_DEVSET_EXEC:
{
int err, (*setfunc)(ide_drive_t *, int) = rq->special;
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
struct request_pm_state *pm = rq->data;
#ifdef DEBUG_PM
printk("%s: start_power_step(step: %d)\n",
- drive->name, rq->pm->pm_step);
+ drive->name, pm->pm_step);
#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))
ide_startstop_t startstop;
int loops = 0;
- /* for atari only: POSSIBLY BROKEN HERE(?) */
- ide_get_lock(ide_intr, hwgroup);
-
/* caller must own ide_lock */
BUG_ON(!irqs_disabled());
while (!hwgroup->busy) {
hwgroup->busy = 1;
+ /* for atari only */
+ ide_get_lock(ide_intr, hwgroup);
drive = choose_drive(hwgroup);
if (drive == NULL) {
int sleeping = 0;
}
hwgroup->hwif = hwif;
hwgroup->drive = drive;
- drive->dev_flags &= ~IDE_DFLAG_SLEEPING;
+ drive->dev_flags &= ~(IDE_DFLAG_SLEEPING | IDE_DFLAG_PARKED);
drive->service_start = jiffies;
if (blk_queue_plugged(drive->queue)) {
del_timer(&hwgroup->timer);
spin_unlock(&ide_lock);
- /* Some controllers might set DMA INTR no matter DMA or PIO;
- * bmdma status might need to be cleared even for
- * PIO interrupts to prevent spurious/lost irq.
- */
- if (hwif->ide_dma_clear_irq && !(drive->waiting_for_dma))
- /* ide_dma_end() needs bmdma status for error checking.
- * So, skip clearing bmdma status here and leave it
- * to ide_dma_end() if this is dma interrupt.
- */
- hwif->ide_dma_clear_irq(drive);
+ if (hwif->port_ops && hwif->port_ops->clear_irq)
+ hwif->port_ops->clear_irq(drive);
if (drive->dev_flags & IDE_DFLAG_UNMASK)
local_irq_enable_in_hardirq();
+
/* service this interrupt, may set handler for next interrupt */
startstop = handler(drive);
- spin_lock_irq(&ide_lock);
+ spin_lock_irq(&ide_lock);
/*
* Note that handler() may have set things up for another
* interrupt to occur soon, but it cannot happen until
spin_lock_irqsave(&ide_lock, flags);
hwgroup->rq = NULL;
- __elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 1);
- __generic_unplug_device(drive->queue);
+ __elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
+ blk_start_queueing(drive->queue);
spin_unlock_irqrestore(&ide_lock, flags);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff