Patch 9/10:
irq_on/irq_off are now only wrapped by freeze/thaw (and unused otherwise).
We can integrate freeze/thaw with irq_on/irq_off.
Signed-off-by: Albert Lee <albertcc@xxxxxxxxxx>
---
This is for libata-core. The LLDDs will be fixed in the next patch.
diff -Nrup 08_tfload_cleanup/drivers/ata/libata-core.c 09_integrate_irq_on_off/drivers/ata/libata-core.c
--- 08_tfload_cleanup/drivers/ata/libata-core.c 2007-07-04 13:13:56.000000000 +0800
+++ 09_integrate_irq_on_off/drivers/ata/libata-core.c 2007-07-04 13:35:05.000000000 +0800
@@ -4753,7 +4753,7 @@ static void ata_hsm_qc_complete(struct a
qc = ata_qc_from_tag(ap, qc->tag);
if (qc) {
if (likely(!(qc->err_mask & AC_ERR_HSM))) {
- ap->ops->thaw(ap);
+ ap->ops->irq_on(ap);
ata_qc_complete(qc);
} else
ata_port_freeze(ap);
@@ -4769,7 +4769,7 @@ static void ata_hsm_qc_complete(struct a
} else {
if (in_wq) {
spin_lock_irqsave(ap->lock, flags);
- ap->ops->thaw(ap);
+ ap->ops->irq_on(ap);
ata_qc_complete(qc);
spin_unlock_irqrestore(ap->lock, flags);
} else
@@ -5411,7 +5411,7 @@ unsigned int ata_qc_issue_prot(struct at
switch (qc->tf.protocol) {
case ATA_PROT_NODATA:
if (qc->tf.flags & ATA_TFLAG_POLLING)
- ap->ops->freeze(ap);
+ ap->ops->irq_off(ap);
ata_tf_to_host(ap, &qc->tf);
ap->hsm_task_state = HSM_ST_LAST;
@@ -5432,7 +5432,7 @@ unsigned int ata_qc_issue_prot(struct at
case ATA_PROT_PIO:
if (qc->tf.flags & ATA_TFLAG_POLLING)
- ap->ops->freeze(ap);
+ ap->ops->irq_off(ap);
ata_tf_to_host(ap, &qc->tf);
@@ -5461,7 +5461,7 @@ unsigned int ata_qc_issue_prot(struct at
case ATA_PROT_ATAPI:
case ATA_PROT_ATAPI_NODATA:
if (qc->tf.flags & ATA_TFLAG_POLLING)
- ap->ops->freeze(ap);
+ ap->ops->irq_off(ap);
ata_tf_to_host(ap, &qc->tf);
@@ -6758,8 +6758,6 @@ const struct ata_port_operations ata_dum
.dev_select = ata_noop_dev_select,
.qc_prep = ata_noop_qc_prep,
.qc_issue = ata_dummy_qc_issue,
- .freeze = ata_dummy_noret,
- .thaw = ata_dummy_noret,
.error_handler = ata_dummy_noret,
.post_internal_cmd = ata_dummy_qc_noret,
.irq_clear = ata_dummy_noret,
@@ -6821,8 +6819,6 @@ EXPORT_SYMBOL_GPL(ata_bmdma_start);
EXPORT_SYMBOL_GPL(ata_bmdma_irq_clear);
EXPORT_SYMBOL_GPL(ata_bmdma_status);
EXPORT_SYMBOL_GPL(ata_bmdma_stop);
-EXPORT_SYMBOL_GPL(ata_bmdma_freeze);
-EXPORT_SYMBOL_GPL(ata_bmdma_thaw);
EXPORT_SYMBOL_GPL(ata_bmdma_drive_eh);
EXPORT_SYMBOL_GPL(ata_bmdma_error_handler);
EXPORT_SYMBOL_GPL(ata_bmdma_post_internal_cmd);
diff -Nrup 08_tfload_cleanup/drivers/ata/libata-eh.c 09_integrate_irq_on_off/drivers/ata/libata-eh.c
--- 08_tfload_cleanup/drivers/ata/libata-eh.c 2007-07-04 11:26:30.000000000 +0800
+++ 09_integrate_irq_on_off/drivers/ata/libata-eh.c 2007-07-04 13:36:27.000000000 +0800
@@ -617,8 +617,7 @@ static void __ata_port_freeze(struct ata
{
WARN_ON(!ap->ops->error_handler);
- if (ap->ops->freeze)
- ap->ops->freeze(ap);
+ ap->ops->irq_off(ap);
ap->pflags |= ATA_PFLAG_FROZEN;
@@ -690,8 +689,7 @@ void ata_eh_thaw_port(struct ata_port *a
ap->pflags &= ~ATA_PFLAG_FROZEN;
- if (ap->ops->thaw)
- ap->ops->thaw(ap);
+ ap->ops->irq_on(ap);
spin_unlock_irqrestore(ap->lock, flags);
diff -Nrup 08_tfload_cleanup/drivers/ata/libata-sff.c 09_integrate_irq_on_off/drivers/ata/libata-sff.c
--- 08_tfload_cleanup/drivers/ata/libata-sff.c 2007-07-04 13:20:30.000000000 +0800
+++ 09_integrate_irq_on_off/drivers/ata/libata-sff.c 2007-07-04 13:57:21.000000000 +0800
@@ -48,23 +48,20 @@
* LOCKING:
* Inherited from caller.
*/
-u8 ata_irq_on(struct ata_port *ap)
+void ata_irq_on(struct ata_port *ap)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
- u8 tmp;
ap->ctl &= ~ATA_NIEN;
ap->last_ctl = ap->ctl;
iowrite8(ap->ctl, ioaddr->ctl_addr);
- tmp = ata_wait_idle(ap);
+ ata_wait_idle(ap);
ap->ops->irq_clear(ap);
-
- return tmp;
}
-u8 ata_dummy_irq_on (struct ata_port *ap) { return 0; }
+void ata_dummy_irq_on (struct ata_port *ap) { }
/**
* ata_irq_off - Disable interrupts on a port.
@@ -76,10 +73,9 @@ u8 ata_dummy_irq_on (struct ata_port *ap
* LOCKING:
* Inherited from caller.
*/
-u8 ata_irq_off(struct ata_port *ap)
+void ata_irq_off(struct ata_port *ap)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
- u8 tmp;
ap->ctl |= ATA_NIEN;
ap->last_ctl = ap->ctl;
@@ -90,14 +86,12 @@ u8 ata_irq_off(struct ata_port *ap)
* ATA_NIEN manipulation. Also, many controllers fail to mask
* previously pending IRQ on ATA_NIEN assertion. Clear it.
*/
- tmp = ata_wait_idle(ap);
+ ata_wait_idle(ap);
ap->ops->irq_clear(ap);
-
- return tmp;
}
-u8 ata_dummy_irq_off (struct ata_port *ap) { return 0; }
+void ata_dummy_irq_off (struct ata_port *ap) { }
/**
* ata_irq_ack - Acknowledge a device interrupt.
@@ -405,37 +399,6 @@ void ata_bmdma_stop(struct ata_queued_cm
}
/**
- * ata_bmdma_freeze - Freeze BMDMA controller port
- * @ap: port to freeze
- *
- * Freeze BMDMA controller port.
- *
- * LOCKING:
- * Inherited from caller.
- */
-void ata_bmdma_freeze(struct ata_port *ap)
-{
- ap->ops->irq_off(ap);
-}
-
-/**
- * ata_bmdma_thaw - Thaw BMDMA controller port
- * @ap: port to thaw
- *
- * Thaw BMDMA controller port.
- *
- * LOCKING:
- * Inherited from caller.
- */
-void ata_bmdma_thaw(struct ata_port *ap)
-{
- /* clear & re-enable interrupts */
- ata_chk_status(ap);
- ap->ops->irq_clear(ap);
- ap->ops->irq_on(ap);
-}
-
-/**
* ata_bmdma_drive_eh - Perform EH with given methods for BMDMA controller
* @ap: port to handle error for
* @prereset: prereset method (can be NULL)
diff -Nrup 08_tfload_cleanup/include/linux/libata.h 09_integrate_irq_on_off/include/linux/libata.h
--- 08_tfload_cleanup/include/linux/libata.h 2007-07-04 13:13:56.000000000 +0800
+++ 09_integrate_irq_on_off/include/linux/libata.h 2007-07-04 13:52:06.000000000 +0800
@@ -589,15 +589,13 @@ struct ata_port_operations {
*/
void (*eng_timeout) (struct ata_port *ap); /* obsolete */
- void (*freeze) (struct ata_port *ap);
- void (*thaw) (struct ata_port *ap);
void (*error_handler) (struct ata_port *ap);
void (*post_internal_cmd) (struct ata_queued_cmd *qc);
irq_handler_t irq_handler;
void (*irq_clear) (struct ata_port *);
- u8 (*irq_on) (struct ata_port *);
- u8 (*irq_off) (struct ata_port *);
+ void (*irq_on) (struct ata_port *);
+ void (*irq_off) (struct ata_port *);
u8 (*irq_ack) (struct ata_port *ap, unsigned int chk_drq);
u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg);
@@ -779,8 +777,6 @@ extern void ata_bmdma_start (struct ata_
extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
extern u8 ata_bmdma_status(struct ata_port *ap);
extern void ata_bmdma_irq_clear(struct ata_port *ap);
-extern void ata_bmdma_freeze(struct ata_port *ap);
-extern void ata_bmdma_thaw(struct ata_port *ap);
extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
ata_reset_fn_t softreset,
ata_reset_fn_t hardreset,
@@ -803,10 +799,10 @@ extern int ata_scsi_change_queue_depth(s
int queue_depth);
extern struct ata_device *ata_dev_pair(struct ata_device *adev);
extern int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);
-extern u8 ata_irq_on(struct ata_port *ap);
-extern u8 ata_dummy_irq_on(struct ata_port *ap);
-extern u8 ata_irq_off(struct ata_port *ap);
-extern u8 ata_dummy_irq_off(struct ata_port *ap);
+extern void ata_irq_on(struct ata_port *ap);
+extern void ata_dummy_irq_on(struct ata_port *ap);
+extern void ata_irq_off(struct ata_port *ap);
+extern void ata_dummy_irq_off(struct ata_port *ap);
extern u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq);
extern u8 ata_dummy_irq_ack(struct ata_port *ap, unsigned int chk_drq);
-
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