static int pacpi_pre_reset(struct ata_link *link, unsigned long deadline)
{
struct ata_port *ap = link->ap;
struct pata_acpi *acpi = ap->private_data;
if (ap->acpi_handle == NULL || ata_acpi_gtm(ap, &acpi->gtm) < 0)
return -ENODEV;
return ata_sff_prereset(link, deadline);
}
static void pacpi_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
int unit = adev->devno;
struct pata_acpi *acpi = ap->private_data;
const struct ata_timing *t;
if (!(acpi->gtm.flags & 0x10))
unit = 0;
/* Now stuff the nS values into the structure */
t = ata_timing_find_mode(adev->pio_mode);
acpi->gtm.drive[unit].pio = t->cycle;
ata_acpi_stm(ap, &acpi->gtm);
/* See what mode we actually got */
ata_acpi_gtm(ap, &acpi->gtm);
}
static void pacpi_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
int unit = adev->devno;
struct pata_acpi *acpi = ap->private_data;
const struct ata_timing *t;
if (!(acpi->gtm.flags & 0x10))
unit = 0;
t = ata_timing_find_mode(adev->pio_mode);
acpi->gtm.drive[unit].pio = t->cycle;
ata_acpi_stm(ap, &acpi->gtm);
ata_acpi_gtm(ap, &acpi->gtm);
}
static unsigned long pacpi_discover_modes(struct ata_port *ap, struct ata_device *adev)
{
struct pata_acpi *acpi = ap->private_data;
struct ata_acpi_gtm probe;
unsigned int xfer_mask;
probe = acpi->gtm;
ata_acpi_gtm(ap, &probe);
xfer_mask = ata_acpi_gtm_xfermask(adev, &probe);
if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA))
ap->cbl = ATA_CBL_PATA80;
return xfer_mask;
}
static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
int unit = adev->devno;
struct pata_acpi *acpi = ap->private_data;
const struct ata_timing *t;
if (!(acpi->gtm.flags & 0x10))
unit = 0;
/* Now stuff the nS values into the structure */
t = ata_timing_find_mode(adev->dma_mode);
if (adev->dma_mode >= XFER_UDMA_0) {
acpi->gtm.drive[unit].dma = t->udma;
acpi->gtm.flags |= (1 << (2 * unit));
} else {
acpi->gtm.drive[unit].dma = t->cycle;
acpi->gtm.flags &= ~(1 << (2 * unit));
}
ata_acpi_stm(ap, &acpi->gtm);
/* See what mode we actually got */
ata_acpi_gtm(ap, &acpi->gtm);
}
static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
int unit = adev->devno;
struct pata_acpi *acpi = ap->private_data;
const struct ata_timing *t;
if (!(acpi->gtm.flags & 0x10))
unit = 0;
t = ata_timing_find_mode(adev->dma_mode);
if (adev->dma_mode >= XFER_UDMA_0) {
acpi->gtm.drive[unit].dma = t->udma;
acpi->gtm.flags |= (1 << (2 * unit));
} else {
acpi->gtm.drive[unit].dma = t->cycle;
acpi->gtm.flags &= ~(1 << (2 * unit));
}
ata_acpi_stm(ap, &acpi->gtm);
ata_acpi_gtm(ap, &acpi->gtm);
}