static int config_chipset_for_dma (ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;
ide_hwif_t *hwif = HWIF(drive);
u8 speed = -1;
u8 cable;
u8 ultra_66 = ((id->dma_ultra & 0x0010) ||
(id->dma_ultra & 0x0008)) ? 1 : 0;
cable = pdcnew_new_cable_detect(hwif);
if (ultra_66 && cable) {
printk(KERN_WARNING "Warning: %s channel requires an 80-pin cable for operation.\n", hwif->channel ? "Secondary":"Primary");
printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
}
if (drive->media != ide_disk)
return 0;
if (id->capability & 4) { /* IORDY_EN & PREFETCH_EN */
hwif->OUTB((0x13 + ((drive->dn%2) ? 0x08 : 0x00)), hwif->dma_vendor1);
hwif->OUTB((hwif->INB(hwif->dma_vendor3)|0x03), hwif->dma_vendor3);
}
speed = ide_dma_speed(drive, pdcnew_ratemask(drive));
if (!(speed)) {
hwif->tuneproc(drive, 5);
return 0;
}
(void) hwif->speedproc(drive, speed);
return ide_dma_enable(drive);
}
static int slc90e66_config_drive_for_dma (ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, slc90e66_ratemask(drive));
if (!speed)
return 0;
(void) slc90e66_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int config_chipset_for_dma (ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, aec62xx_ratemask(drive));
if (!(speed))
return 0;
(void) aec62xx_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int config_chipset_for_dma(ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, tc86c001_ratemask(drive));
if (!speed)
return 0;
(void) tc86c001_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int slc90e66_config_drive_for_dma (ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, slc90e66_ratemask(drive));
if (!(speed)) {
u8 tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL);
speed = slc90e66_dma_2_pio(XFER_PIO_0 + tspeed);
}
(void) slc90e66_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int triflex_config_drive_for_dma(ide_drive_t *drive)
{
int speed = ide_dma_speed(drive, 0); /* No ultra speeds */
if (!speed) {
u8 pspeed = ide_get_best_pio_mode(drive, 255, 4, NULL);
speed = XFER_PIO_0 + pspeed;
}
(void) triflex_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int piix_config_drive_for_dma (ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, piix_ratemask(drive));
/*
* If no DMA speed was available or the chipset has DMA bugs
* then disable DMA and use PIO
*/
if (!speed || no_piix_dma)
return 0;
(void) piix_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int config_chipset_for_dma (ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, cmd64x_ratemask(drive));
config_chipset_for_pio(drive, !speed);
if (!speed)
return 0;
if(ide_set_xfer_rate(drive, speed))
return 0;
if (!drive->init_speed)
drive->init_speed = speed;
return ide_dma_enable(drive);
}
static int piix_config_drive_for_dma (ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, piix_ratemask(drive));
/* Some ICH devices cannot support DMA mode 0 */
if(speed == XFER_MW_DMA_0 && piix_faulty_dma0(HWIF(drive)))
speed = 0;
/* If no DMA speed was available or the chipset has DMA bugs
then disable DMA and use PIO */
if (!speed || no_piix_dma) {
u8 tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL);
speed = piix_dma_2_pio(XFER_PIO_0 + tspeed);
}
(void) piix_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
static int config_chipset_for_dma(ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;
ide_hwif_t *hwif = HWIF(drive);
u8 ultra_66 = (id->dma_ultra & 0x0078) ? 1 : 0;
u8 cable = pdcnew_cable_detect(hwif);
u8 speed;
if (ultra_66 && cable) {
printk(KERN_WARNING "Warning: %s channel "
"requires an 80-pin cable for operation.\n",
hwif->channel ? "Secondary" : "Primary");
printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
}
if (drive->media != ide_disk)
return 0;
if (id->capability & 4) {
/*
* Set IORDY_EN & PREFETCH_EN (this seems to have
* NO real effect since this register is reloaded
* by hardware when the transfer mode is selected)
*/
u8 tmp, adj = (drive->dn & 1) ? 0x08 : 0x00;
tmp = get_indexed_reg(hwif, 0x13 + adj);
set_indexed_reg(hwif, 0x13 + adj, tmp | 0x03);
}
speed = ide_dma_speed(drive, pdcnew_ratemask(drive));
if (!speed)
return 0;
(void) hwif->speedproc(drive, speed);
return ide_dma_enable(drive);
}
