static void vt6420_bmdma_start(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
if ((qc->tf.command == ATA_CMD_PACKET) &&
(qc->scsicmd->sc_data_direction == DMA_TO_DEVICE)) {
/* Prevents corruption on some ATAPI burners */
ata_sff_pause(ap);
}
ata_bmdma_start(qc);
}
static void sl82c105_bmdma_start(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
udelay(100);
sl82c105_reset_engine(ap);
udelay(100);
/* Set the clocks for DMA */
sl82c105_configure_dmamode(ap, qc->dev);
/* Activate DMA */
ata_bmdma_start(qc);
}
static void atiixp_bmdma_start(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct ata_device *adev = qc->dev;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
int dn = (2 * ap->port_no) + adev->devno;
u16 tmp16;
pci_read_config_word(pdev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
if (ata_using_udma(adev))
tmp16 |= (1 << dn);
else
tmp16 &= ~(1 << dn);
pci_write_config_word(pdev, ATIIXP_IDE_UDMA_CONTROL, tmp16);
ata_bmdma_start(qc);
}
static void triflex_bmdma_start(struct ata_queued_cmd *qc)
{
triflex_load_timing(qc->ap, qc->dev, qc->dev->dma_mode);
ata_bmdma_start(qc);
}
static void ns87415_bmdma_start(struct ata_queued_cmd *qc)
{
ns87415_set_mode(qc->ap, qc->dev, qc->dev->dma_mode);
ata_bmdma_start(qc);
}
