static inline
void ata_drvsel(struct ata_chan *chan, uint8_t drv)
{
if ( chan->drvsel != !!drv ) {
ata_set_drive_head(chan, 0, !!drv, 0);
ata_busy_wait(chan);
}
}
static int ata_chan_reset(const struct ata_chan *chan)
{
/* reset and disable interrupts */
ata_devctl(chan, ATA_DEVCTL_SRST|ATA_DEVCTL_nIEN);
udelay(10);
/* de-assert reset, leave interrupts disabled */
ata_devctl(chan, ATA_DEVCTL_nIEN);
ata_busy_wait(chan);
return 0;
}
static u8 scc_irq_ack (struct ata_port *ap, unsigned int chk_drq)
{
unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY;
u8 host_stat, post_stat, status;
status = ata_busy_wait(ap, bits, 1000);
if (status & bits)
if (ata_msg_err(ap))
printk(KERN_ERR "abnormal status 0x%X\n", status);
/* get controller status; clear intr, err bits */
host_stat = in_be32(ap->ioaddr.bmdma_addr + SCC_DMA_STATUS);
out_be32(ap->ioaddr.bmdma_addr + SCC_DMA_STATUS,
host_stat | ATA_DMA_INTR | ATA_DMA_ERR);
post_stat = in_be32(ap->ioaddr.bmdma_addr + SCC_DMA_STATUS);
if (ata_msg_intr(ap))
printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
__FUNCTION__,
host_stat, post_stat, status);
return status;
}
