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[libata sata_promise] Add PATA cable detection. 

Original patch from Phillip Jordan <phillip.m.jordan@gmail.com>
Cleanups and fixes by me.
This commit is contained in:
Jeff Garzik 2006-05-24 01:43:25 -04:00
parent 4c5c81613b
commit d3fb4e8ddd
1 changed files with 15 additions and 4 deletions
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15
drivers/scsi/sata_promise.c
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@ -364,12 +364,23 @@ static void pdc_sata_phy_reset(struct ata_port *ap)
sata_phy_reset(ap);
}
static void pdc_pata_phy_reset(struct ata_port *ap)
static void pdc_pata_cbl_detect(struct ata_port *ap)
{
/* FIXME: add cable detect. Don't assume 40-pin cable */
u8 tmp;
void __iomem *mmio = (void *) ap->ioaddr.cmd_addr + PDC_CTLSTAT + 0x03;
tmp = readb(mmio);
if (tmp & 0x01) {
ap->cbl = ATA_CBL_PATA40;
ap->udma_mask &= ATA_UDMA_MASK_40C;
} else
ap->cbl = ATA_CBL_PATA80;
}
static void pdc_pata_phy_reset(struct ata_port *ap)
{
pdc_pata_cbl_detect(ap);
pdc_reset_port(ap);
ata_port_probe(ap);
ata_bus_reset(ap);