Merged with ../linux-2.6

[linux-2.6-omap-h63xx.git] / include / linux / libata.h

diff --git a/include/linux/libata.h b/include/linux/libata.h
index e74f301e9baea59df14efbbd75943a61b496651c..6cd9ba63563b4db61b0977a88db84894d313735c 100644 (file)
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -421,6 +421,7 @@ extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
 extern unsigned int ata_dev_classify(struct ata_taskfile *tf);
 extern void ata_dev_id_string(u16 *id, unsigned char *s,
                              unsigned int ofs, unsigned int len);
+extern void ata_dev_config(struct ata_port *ap, unsigned int i);
 extern void ata_bmdma_setup (struct ata_queued_cmd *qc);
 extern void ata_bmdma_start (struct ata_queued_cmd *qc);
 extern void ata_bmdma_stop(struct ata_port *ap);
@@ -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;