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author <jgarzik@pretzel.yyz.us>2005-06-03 23:54:56 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-06-03 23:54:56 -0400
commit73561695b2e77473e353a5ae63bab81ed5098d8e (patch)
treed039affaa54d38985e41566e4d62e0aa6a170287 /include/linux/libata.h
parent6f2f38128170814e151cfedf79532e19cd179567 (diff)
parent8be3de3fd8469154a2b3e18a4712032dac5b4a53 (diff)
downloadop-kernel-dev-73561695b2e77473e353a5ae63bab81ed5098d8e.zip
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Automatic merge of /spare/repo/linux-2.6/.git branch HEAD
Diffstat (limited to 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index d33e703..6cd9ba6 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -410,6 +410,7 @@ extern u8 ata_chk_err(struct ata_port *ap);
extern void ata_exec_command(struct ata_port *ap, struct ata_taskfile *tf);
extern int ata_port_start (struct ata_port *ap);
extern void ata_port_stop (struct ata_port *ap);
+extern void ata_host_stop (struct ata_host_set *host_set);
extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
extern void ata_qc_prep(struct ata_queued_cmd *qc);
extern int ata_qc_issue_prot(struct ata_queued_cmd *qc);
@@ -467,12 +468,34 @@ static inline u8 ata_chk_status(struct ata_port *ap)
return ap->ops->check_status(ap);
}
+
+/**
+ * ata_pause - Flush writes and pause 400 nanoseconds.
+ * @ap: Port to wait for.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+
static inline void ata_pause(struct ata_port *ap)
{
ata_altstatus(ap);
ndelay(400);
}
+
+/**
+ * ata_busy_wait - Wait for a port status register
+ * @ap: Port to wait for.
+ *
+ * Waits up to max*10 microseconds for the selected bits in the port's
+ * status register to be cleared.
+ * Returns final value of status register.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+
static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits,
unsigned int max)
{
@@ -487,6 +510,18 @@ static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits,
return status;
}
+
+/**
+ * ata_wait_idle - Wait for a port to be idle.
+ * @ap: Port to wait for.
+ *
+ * Waits up to 10ms for port's BUSY and DRQ signals to clear.
+ * Returns final value of status register.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+
static inline u8 ata_wait_idle(struct ata_port *ap)
{
u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
@@ -525,6 +560,18 @@ static inline void ata_tf_init(struct ata_port *ap, struct ata_taskfile *tf, uns
tf->device = ATA_DEVICE_OBS | ATA_DEV1;
}
+
+/**
+ * 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.
+ */
+
static inline u8 ata_irq_on(struct ata_port *ap)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
@@ -544,6 +591,18 @@ static inline u8 ata_irq_on(struct ata_port *ap)
return tmp;
}
+
+/**
+ * ata_irq_ack - Acknowledge a device interrupt.
+ * @ap: Port on which interrupts are enabled.
+ *
+ * Wait up to 10 ms for legacy IDE device to become idle (BUSY
+ * or BUSY+DRQ clear). Obtain dma status and port status from
+ * device. Clear the interrupt. Return port status.
+ *
+ * LOCKING:
+ */
+
static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq)
{
unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY;
@@ -585,6 +644,13 @@ static inline void scr_write(struct ata_port *ap, unsigned int reg, u32 val)
ap->ops->scr_write(ap, reg, val);
}
+static inline void scr_write_flush(struct ata_port *ap, unsigned int reg,
+ u32 val)
+{
+ ap->ops->scr_write(ap, reg, val);
+ (void) ap->ops->scr_read(ap, reg);
+}
+
static inline unsigned int sata_dev_present(struct ata_port *ap)
{
return ((scr_read(ap, SCR_STATUS) & 0xf) == 0x3) ? 1 : 0;
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