From d3fb4e8dddebbf7d6c0b02842c619bfd4fa199f5 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Wed, 24 May 2006 01:43:25 -0400 Subject: [PATCH] [libata sata_promise] Add PATA cable detection. Original patch from Phillip Jordan Cleanups and fixes by me. --- drivers/scsi/sata_promise.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c index bb000438cb6c..285ab0263d91 100644 --- a/drivers/scsi/sata_promise.c +++ b/drivers/scsi/sata_promise.c @@ -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 */ - ap->cbl = ATA_CBL_PATA40; - ap->udma_mask &= ATA_UDMA_MASK_40C; + 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); -- 2.30.2