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

alim15x3: backport short cables support from pata_ali.c 

Backport short cables support from pata_ali.c and while at it cleanup
existing cable detection code.

This patch should allow UDMA > 2 modes on HP Pavilion N5430 and Fujitsu P2000.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-07-09 23:17:58 +02:00
parent 7207626f47
commit 95ba8c17bc
1 changed files with 48 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

71
drivers/ide/pci/alim15x3.c
View File

@ -1,5 +1,5 @@
/*
* linux/drivers/ide/pci/alim15x3.c Version 0.21 2007/02/03
* linux/drivers/ide/pci/alim15x3.c Version 0.25 Jun 9 2007
*
* Copyright (C) 1998-2000 Michel Aubry, Maintainer
* Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer
@ -10,6 +10,7 @@
* Copyright (C) 2002 Alan Cox <alan@redhat.com>
* ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw>
* Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
* Copyright (C) 2007 Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
*
* (U)DMA capable version of ali 1533/1543(C), 1535(D)
*
@ -36,6 +37,7 @@
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/init.h>
#include <linux/dmi.h>
#include <asm/io.h>
@ -583,6 +585,35 @@ out:
return 0;
}
/*
* Cable special cases
*/
static struct dmi_system_id cable_dmi_table[] = {
{
.ident = "HP Pavilion N5430",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_BOARD_NAME, "OmniBook N32N-736"),
},
},
{ }
};
static int ali_cable_override(struct pci_dev *pdev)
{
/* Fujitsu P2000 */
if (pdev->subsystem_vendor == 0x10CF &&
pdev->subsystem_device == 0x10AF)
return 1;
/* Systems by DMI */
if (dmi_check_system(cable_dmi_table))
return 1;
return 0;
}
/**
* ata66_ali15x3 - check for UDMA 66 support
* @hwif: IDE interface
@ -597,34 +628,28 @@ out:
static u8 __devinit ata66_ali15x3(ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;
unsigned int ata66 = 0;
u8 cable_80_pin[2] = { 0, 0 };
unsigned long flags;
u8 tmpbyte;
u8 cbl = ATA_CBL_PATA40, tmpbyte;
local_irq_save(flags);
if (m5229_revision >= 0xC2) {
/*
* Ultra66 cable detection (from Host View)
* m5229, 0x4a, bit0: primary, bit1: secondary 80 pin
* m5229 80-pin cable detection (from Host View)
*
* 0x4a bit0 is 0 => primary channel has 80-pin
* 0x4a bit1 is 0 => secondary channel has 80-pin
*
* Certain laptops use short but suitable cables
* and don't implement the detect logic.
*/
pci_read_config_byte(dev, 0x4a, &tmpbyte);
/*
* 0x4a, bit0 is 0 => primary channel
* has 80-pin (from host view)
*/
if (!(tmpbyte & 0x01)) cable_80_pin[0] = 1;
/*
* 0x4a, bit1 is 0 => secondary channel
* has 80-pin (from host view)
*/
if (!(tmpbyte & 0x02)) cable_80_pin[1] = 1;
/*
* Allow ata66 if cable of current channel has 80 pins
*/
ata66 = (hwif->channel)?cable_80_pin[1]:cable_80_pin[0];
if (ali_cable_override(dev))
cbl = ATA_CBL_PATA40_SHORT;
else {
pci_read_config_byte(dev, 0x4a, &tmpbyte);
if ((tmpbyte & (1 << hwif->channel)) == 0)
cbl = ATA_CBL_PATA80;
}
} else {
/*
* check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
@ -657,7 +682,7 @@ static u8 __devinit ata66_ali15x3(ide_hwif_t *hwif)
local_irq_restore(flags);
return ata66 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
return cbl;
}
/**