hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

pata_via: Use cable_detect method 

We end up shifting a few bits of logic around in this driver but the
basic change is the same.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox 2007-03-07 16:56:54 +00:00 committed by Jeff Garzik
parent 2e413f510f
commit 97cb81c335
1 changed files with 12 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/ata/pata_via.c
View File

@ -62,7 +62,7 @@
#include <linux/libata.h>
#define DRV_NAME "pata_via"
#define DRV_VERSION "0.2.1"
#define DRV_VERSION "0.3.1"
/*
* The following comes directly from Vojtech Pavlik's ide/pci/via82cxxx
@ -135,16 +135,23 @@ static const struct via_isa_bridge {
*/
static int via_cable_detect(struct ata_port *ap) {
const struct via_isa_bridge *config = ap->host->private_data;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u32 ata66;
/* Early chips are 40 wire */
if ((config->flags & VIA_UDMA) < VIA_UDMA_66)
return ATA_CBL_PATA40;
/* UDMA 66 chips have only drive side logic */
else if((config->flags & VIA_UDMA) < VIA_UDMA_100)
return ATA_CBL_PATA_UNK;
/* UDMA 100 or later */
pci_read_config_dword(pdev, 0x50, &ata66);
/* Check both the drive cable reporting bits, we might not have
two drives */
if (ata66 & (0x10100000 >> (16 * ap->port_no)))
return ATA_CBL_PATA80;
else
return ATA_CBL_PATA40;
return ATA_CBL_PATA40;
}
static int via_pre_reset(struct ata_port *ap)
@ -156,22 +163,10 @@ static int via_pre_reset(struct ata_port *ap)
{ 0x40, 1, 0x02, 0x02 },
{ 0x40, 1, 0x01, 0x01 }
};
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
if (!pci_test_config_bits(pdev, &via_enable_bits[ap->port_no]))
return -ENOENT;
}
if ((config->flags & VIA_UDMA) >= VIA_UDMA_100)
ap->cbl = via_cable_detect(ap);
/* The UDMA66 series has no cable detect so do drive side detect */
else if ((config->flags & VIA_UDMA) < VIA_UDMA_66)
ap->cbl = ATA_CBL_PATA40;
else
ap->cbl = ATA_CBL_PATA_UNK;
return ata_std_prereset(ap);
}
@ -327,6 +322,7 @@ static struct ata_port_operations via_port_ops = {
.thaw = ata_bmdma_thaw,
.error_handler = via_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = via_cable_detect,
.bmdma_setup = ata_bmdma_setup,
.bmdma_start = ata_bmdma_start,
@ -362,6 +358,7 @@ static struct ata_port_operations via_port_ops_noirq = {
.thaw = ata_bmdma_thaw,
.error_handler = via_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.cable_detect = via_cable_detect,
.bmdma_setup = ata_bmdma_setup,
.bmdma_start = ata_bmdma_start,