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authorTejun Heo <htejun@gmail.com>2006-10-09 11:10:26 +0900
committerJeff Garzik <jeff@garzik.org>2006-12-01 22:40:28 -0500
commit90088bb41200b4da962282dfd45db82544adac3b (patch)
tree84241a4af54715469dd237bd6925f46530f2b5b7 /drivers/ata
parentd1adc1bbd6dde3e05a91e2d3e6ab42d202ea61d5 (diff)
downloadop-kernel-dev-90088bb41200b4da962282dfd45db82544adac3b.zip
op-kernel-dev-90088bb41200b4da962282dfd45db82544adac3b.tar.gz
[PATCH] libata: move ata_irq_on() into libata-sff.c
ata_irq_on() isn't used outside of libata core layer. The function is TF/SFF interface specific but currently used by core path with some hack too. Move it from include/linux/libata.h to drivers/ata/libata-sff.c. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-sff.c29
-rw-r--r--drivers/ata/libata.h3
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index e178d6a..37471d3 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -39,6 +39,35 @@
#include "libata.h"
/**
+ * ata_irq_on - Enable interrupts on a port.
+ * @ap: Port on which interrupts are enabled.
+ *
+ * Enable interrupts on a legacy IDE device using MMIO or PIO,
+ * wait for idle, clear any pending interrupts.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+u8 ata_irq_on(struct ata_port *ap)
+{
+ struct ata_ioports *ioaddr = &ap->ioaddr;
+ u8 tmp;
+
+ ap->ctl &= ~ATA_NIEN;
+ ap->last_ctl = ap->ctl;
+
+ if (ap->flags & ATA_FLAG_MMIO)
+ writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr);
+ else
+ outb(ap->ctl, ioaddr->ctl_addr);
+ tmp = ata_wait_idle(ap);
+
+ ap->ops->irq_clear(ap);
+
+ return tmp;
+}
+
+/**
* ata_tf_load_pio - send taskfile registers to host controller
* @ap: Port to which output is sent
* @tf: ATA taskfile register set
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 0ed263b..c833000 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -120,4 +120,7 @@ extern void ata_scsi_error(struct Scsi_Host *host);
extern void ata_port_wait_eh(struct ata_port *ap);
extern void ata_qc_schedule_eh(struct ata_queued_cmd *qc);
+/* libata-sff.c */
+extern u8 ata_irq_on(struct ata_port *ap);
+
#endif /* __LIBATA_H__ */
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