[PATCH 1/5] ide: add short cables support

From: Bartlomiej Zolnierkiewicz
Date: Sun Jun 10 2007 - 09:46:02 EST


This patch allows users to override both host and device side cable detection
with "ideX=ata66" kernel parameter. Thanks to this it should be now possible
to use UDMA > 2 modes on systems (laptops mainly) which use short 40-pin cable
instead of 80-pin one.

Next patches add automatic detection of some systems using short cables.

Changes:

* Rename hwif->udma_four to hwif->cbl and make it u8.

* Convert all existing users accordingly (use ATA_CBL_* defines while at it).

* Add ATA_CBL_PATA40_SHORT support to ide-iops.c:eighty_ninty_three().

* Use ATA_CBL_PATA40_SHORT for "ideX=ata66" kernel parameter.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/cris/ide-cris.c | 2 +-
drivers/ide/ide-iops.c | 8 ++++++--
drivers/ide/ide.c | 9 +++++++--
drivers/ide/pci/aec62xx.c | 5 +++--
drivers/ide/pci/alim15x3.c | 9 +++++----
drivers/ide/pci/amd74xx.c | 9 +++++++--
drivers/ide/pci/atiixp.c | 5 +++--
drivers/ide/pci/cmd64x.c | 10 +++++-----
drivers/ide/pci/cs5535.c | 6 +++---
drivers/ide/pci/hpt366.c | 4 ++--
drivers/ide/pci/it8213.c | 8 ++++----
drivers/ide/pci/it821x.c | 9 +++++----
drivers/ide/pci/jmicron.c | 20 +++++++++++---------
drivers/ide/pci/pdc202xx_new.c | 9 ++++++---
drivers/ide/pci/pdc202xx_old.c | 9 ++++++---
drivers/ide/pci/piix.c | 8 ++++----
drivers/ide/pci/scc_pata.c | 2 +-
drivers/ide/pci/serverworks.c | 26 +++++++++++++-------------
drivers/ide/pci/siimage.c | 18 ++++++++++--------
drivers/ide/pci/sis5513.c | 9 +++++----
drivers/ide/pci/slc90e66.c | 5 ++---
drivers/ide/pci/tc86c001.c | 4 ++--
drivers/ide/pci/via82cxxx.c | 9 +++++++--
drivers/ide/ppc/pmac.c | 6 +++---
include/linux/ide.h | 3 ++-
25 files changed, 123 insertions(+), 89 deletions(-)

Index: b/drivers/ide/cris/ide-cris.c
===================================================================
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -819,7 +819,7 @@ init_e100_ide (void)
hwif->dma_host_off = &cris_dma_off;
hwif->dma_host_on = &cris_dma_on;
hwif->dma_off_quietly = &cris_dma_off;
- hwif->udma_four = 0;
+ hwif->cbl = ATA_CBL_PATA40;
hwif->ultra_mask = cris_ultra_mask;
hwif->mwdma_mask = 0x07; /* Multiword DMA 0-2 */
hwif->autodma = 1;
Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -574,7 +574,10 @@ u8 eighty_ninty_three (ide_drive_t *driv
ide_hwif_t *hwif = drive->hwif;
struct hd_driveid *id = drive->id;

- if (hwif->udma_four == 0)
+ if (hwif->cbl == ATA_CBL_PATA40_SHORT)
+ return 1;
+
+ if (hwif->cbl != ATA_CBL_PATA80)
goto no_80w;

/* Check for SATA but only if we are ATA5 or higher */
@@ -600,7 +603,8 @@ no_80w:

printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, "
"limiting max speed to UDMA33\n",
- drive->name, hwif->udma_four ? "drive" : "host");
+ drive->name,
+ hwif->cbl == ATA_CBL_PATA80 ? "drive" : "host");

drive->udma33_warned = 1;

Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -460,6 +460,8 @@ static void ide_hwif_restore(ide_hwif_t
hwif->mwdma_mask = tmp_hwif->mwdma_mask;
hwif->swdma_mask = tmp_hwif->swdma_mask;

+ hwif->cbl = tmp_hwif->cbl;
+
hwif->chipset = tmp_hwif->chipset;
hwif->hold = tmp_hwif->hold;

@@ -533,7 +535,6 @@ static void ide_hwif_restore(ide_hwif_t
hwif->extra_base = tmp_hwif->extra_base;
hwif->extra_ports = tmp_hwif->extra_ports;
hwif->autodma = tmp_hwif->autodma;
- hwif->udma_four = tmp_hwif->udma_four;

hwif->hwif_data = tmp_hwif->hwif_data;
}
@@ -1545,7 +1546,11 @@ static int __init ide_setup(char *s)
goto bad_option;
case -7: /* ata66 */
#ifdef CONFIG_BLK_DEV_IDEPCI
- hwif->udma_four = 1;
+ /*
+ * Use ATA_CBL_PATA40_SHORT so drive side
+ * cable detection is also overriden.
+ */
+ hwif->cbl = ATA_CBL_PATA40_SHORT;
goto obsolete_option;
#else
goto bad_hwif;
Index: b/drivers/ide/pci/aec62xx.c
===================================================================
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -234,11 +234,12 @@ static void __devinit init_hwif_aec62xx(
pci_read_config_byte (dev, 0x54, &reg54);
pci_write_config_byte(dev, 0x54, (reg54 & ~mask));
spin_unlock_irqrestore(&ide_lock, flags);
- } else if (!hwif->udma_four) {
+ } else if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;

pci_read_config_byte(hwif->pci_dev, 0x49, &ata66);
- hwif->udma_four = (ata66 & mask) ? 0 : 1;
+
+ hwif->cbl = (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
}

if (!noautodma)
Index: b/drivers/ide/pci/alim15x3.c
===================================================================
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -594,7 +594,7 @@ out:
* FIXME: frobs bits that are not defined on newer ALi devicea
*/

-static unsigned int __devinit ata66_ali15x3 (ide_hwif_t *hwif)
+static u8 __devinit ata66_ali15x3(ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;
unsigned int ata66 = 0;
@@ -657,7 +657,7 @@ static unsigned int __devinit ata66_ali1

local_irq_restore(flags);

- return(ata66);
+ return ata66 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
}

/**
@@ -708,8 +708,9 @@ static void __devinit init_hwif_common_a
hwif->dma_setup = &ali15x3_dma_setup;
if (!noautodma)
hwif->autodma = 1;
- if (!(hwif->udma_four))
- hwif->udma_four = ata66_ali15x3(hwif);
+
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = ata66_ali15x3(hwif);
}
hwif->drives[0].autodma = hwif->autodma;
hwif->drives[1].autodma = hwif->autodma;
Index: b/drivers/ide/pci/amd74xx.c
===================================================================
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -433,8 +433,13 @@ static void __devinit init_hwif_amd74xx(
if ((amd_config->flags & AMD_BAD_SWDMA) == 0)
hwif->swdma_mask = 0x07;

- if (!hwif->udma_four)
- hwif->udma_four = (amd_80w >> hwif->channel) & 1;
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
+ if ((amd_80w >> hwif->channel) & 1)
+ hwif->cbl = ATA_CBL_PATA80;
+ else
+ hwif->cbl = ATA_CBL_PATA40;
+ }
+
hwif->ide_dma_check = &amd74xx_ide_dma_check;
if (!noautodma)
hwif->autodma = 1;
Index: b/drivers/ide/pci/atiixp.c
===================================================================
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -264,10 +264,11 @@ static void __devinit init_hwif_atiixp(i
hwif->swdma_mask = 0x04;

pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
+
if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
- hwif->udma_four = 1;
+ hwif->cbl = ATA_CBL_PATA80;
else
- hwif->udma_four = 0;
+ hwif->cbl = ATA_CBL_PATA40;

hwif->dma_host_on = &atiixp_dma_host_on;
hwif->dma_host_off = &atiixp_dma_host_off;
Index: b/drivers/ide/pci/cmd64x.c
===================================================================
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -517,7 +517,7 @@ static unsigned int __devinit init_chips
return 0;
}

-static unsigned int __devinit ata66_cmd64x(ide_hwif_t *hwif)
+static u8 __devinit ata66_cmd64x(ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;
u8 bmidecsr = 0, mask = hwif->channel ? 0x02 : 0x01;
@@ -526,9 +526,9 @@ static unsigned int __devinit ata66_cmd6
case PCI_DEVICE_ID_CMD_648:
case PCI_DEVICE_ID_CMD_649:
pci_read_config_byte(dev, BMIDECSR, &bmidecsr);
- return (bmidecsr & mask) ? 1 : 0;
+ return (bmidecsr & mask) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
default:
- return 0;
+ return ATA_CBL_PATA40;
}
}

@@ -568,8 +568,8 @@ static void __devinit init_hwif_cmd64x(i

hwif->ide_dma_check = &cmd64x_config_drive_for_dma;

- if (!hwif->udma_four)
- hwif->udma_four = ata66_cmd64x(hwif);
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = ata66_cmd64x(hwif);

switch (dev->device) {
case PCI_DEVICE_ID_CMD_648:
Index: b/drivers/ide/pci/cs5535.c
===================================================================
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -187,7 +187,8 @@ static u8 __devinit cs5535_cable_detect(

/* if a 80 wire cable was detected */
pci_read_config_byte(dev, CS5535_CABLE_DETECT, &bit);
- return (bit & 1);
+
+ return (bit & 1) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
}

/****
@@ -212,8 +213,7 @@ static void __devinit init_hwif_cs5535(i
hwif->ultra_mask = 0x1F;
hwif->mwdma_mask = 0x07;

-
- hwif->udma_four = cs5535_cable_detect(hwif->pci_dev);
+ hwif->cbl = cs5535_cable_detect(hwif->pci_dev);

if (!noautodma)
hwif->autodma = 1;
Index: b/drivers/ide/pci/hpt366.c
===================================================================
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1329,8 +1329,8 @@ static void __devinit init_hwif_hpt366(i
} else
pci_read_config_byte (dev, 0x5a, &scr1);

- if (!hwif->udma_four)
- hwif->udma_four = (scr1 & ata66) ? 0 : 1;
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = (scr1 & ata66) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;

hwif->ide_dma_check = &hpt366_config_drive_xfer_rate;

Index: b/drivers/ide/pci/it8213.c
===================================================================
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -231,7 +231,7 @@ static int it8213_config_drive_for_dma (

static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
{
- u8 reg42h = 0, ata66 = 0;
+ u8 reg42h = 0;

hwif->speedproc = &it8213_tune_chipset;
hwif->tuneproc = &it8213_tuneproc;
@@ -250,11 +250,11 @@ static void __devinit init_hwif_it8213(i
hwif->swdma_mask = 0x04;

pci_read_config_byte(hwif->pci_dev, 0x42, &reg42h);
- ata66 = (reg42h & 0x02) ? 0 : 1;

hwif->ide_dma_check = &it8213_config_drive_for_dma;
- if (!(hwif->udma_four))
- hwif->udma_four = ata66;
+
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;

/*
* The BIOS often doesn't set up DMA on this controller
Index: b/drivers/ide/pci/it821x.c
===================================================================
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -491,10 +491,10 @@ static int it821x_config_drive_for_dma (
* the needed logic onboard.
*/

-static unsigned int __devinit ata66_it821x(ide_hwif_t *hwif)
+static u8 __devinit ata66_it821x(ide_hwif_t *hwif)
{
/* The reference driver also only does disk side */
- return 1;
+ return ATA_CBL_PATA80;
}

/**
@@ -663,8 +663,9 @@ static void __devinit init_hwif_it821x(i
hwif->swdma_mask = 0x07;

hwif->ide_dma_check = &it821x_config_drive_for_dma;
- if (!(hwif->udma_four))
- hwif->udma_four = ata66_it821x(hwif);
+
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = ata66_it821x(hwif);

/*
* The BIOS often doesn't set up DMA on this controller
Index: b/drivers/ide/pci/jmicron.c
===================================================================
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -25,10 +25,10 @@ typedef enum {
* ata66_jmicron - Cable check
* @hwif: IDE port
*
- * Return 1 if the cable is 80pin
+ * Returns the cable type.
*/

-static int __devinit ata66_jmicron(ide_hwif_t *hwif)
+static u8 __devinit ata66_jmicron(ide_hwif_t *hwif)
{
struct pci_dev *pdev = hwif->pci_dev;

@@ -70,16 +70,17 @@ static int __devinit ata66_jmicron(ide_h
{
case PORT_PATA0:
if (control & (1 << 3)) /* 40/80 pin primary */
- return 0;
- return 1;
+ return ATA_CBL_PATA40;
+ return ATA_CBL_PATA80;
case PORT_PATA1:
if (control5 & (1 << 19)) /* 40/80 pin secondary */
- return 0;
- return 1;
+ return ATA_CBL_PATA40;
+ return ATA_CBL_PATA80;
case PORT_SATA:
break;
}
- return 1; /* Avoid bogus "control reaches end of non-void function" */
+ /* Avoid bogus "control reaches end of non-void function" */
+ return ATA_CBL_PATA80;
}

static void jmicron_tuneproc (ide_drive_t *drive, byte mode_wanted)
@@ -159,8 +160,9 @@ static void __devinit init_hwif_jmicron(
hwif->mwdma_mask = 0x07;

hwif->ide_dma_check = &jmicron_config_drive_for_dma;
- if (!(hwif->udma_four))
- hwif->udma_four = ata66_jmicron(hwif);
+
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = ata66_jmicron(hwif);

hwif->autodma = 1;
hwif->drives[0].autodma = hwif->autodma;
Index: b/drivers/ide/pci/pdc202xx_new.c
===================================================================
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -225,7 +225,10 @@ static void pdcnew_tune_drive(ide_drive_

static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
{
- return get_indexed_reg(hwif, 0x0b) & 0x04;
+ if (get_indexed_reg(hwif, 0x0b) & 0x04)
+ return ATA_CBL_PATA40;
+ else
+ return ATA_CBL_PATA80;
}

static int pdcnew_config_drive_xfer_rate(ide_drive_t *drive)
@@ -503,8 +506,8 @@ static void __devinit init_hwif_pdc202ne

hwif->ide_dma_check = &pdcnew_config_drive_xfer_rate;

- if (!hwif->udma_four)
- hwif->udma_four = pdcnew_cable_detect(hwif) ? 0 : 1;
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = pdcnew_cable_detect(hwif);

if (!noautodma)
hwif->autodma = 1;
Index: b/drivers/ide/pci/pdc202xx_old.c
===================================================================
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -152,8 +152,10 @@ static void pdc202xx_tune_drive(ide_driv
static u8 pdc202xx_old_cable_detect (ide_hwif_t *hwif)
{
u16 CIS = 0, mask = (hwif->channel) ? (1<<11) : (1<<10);
+
pci_read_config_word(hwif->pci_dev, 0x50, &CIS);
- return (CIS & mask) ? 1 : 0;
+
+ return (CIS & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
}

/*
@@ -357,8 +359,9 @@ static void __devinit init_hwif_pdc202xx
hwif->dma_timeout = &pdc202xx_dma_timeout;

if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246) {
- if (!(hwif->udma_four))
- hwif->udma_four = (pdc202xx_old_cable_detect(hwif)) ? 0 : 1;
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = pdc202xx_old_cable_detect(hwif);
+
hwif->dma_start = &pdc202xx_old_ide_dma_start;
hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
}
Index: b/drivers/ide/pci/piix.c
===================================================================
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -394,14 +394,14 @@ static void piix_dma_clear_irq(ide_drive
hwif->OUTB(dma_stat, hwif->dma_status);
}

-static int __devinit piix_cable_detect(ide_hwif_t *hwif)
+static u8 __devinit piix_cable_detect(ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;
u8 reg54h = 0, mask = hwif->channel ? 0xc0 : 0x30;

pci_read_config_byte(dev, 0x54, &reg54h);

- return (reg54h & mask) ? 1 : 0;
+ return (reg54h & mask) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
}

/**
@@ -444,8 +444,8 @@ static void __devinit init_hwif_piix(ide
hwif->swdma_mask = 0x04;

if (hwif->ultra_mask & 0x78) {
- if (!hwif->udma_four)
- hwif->udma_four = piix_cable_detect(hwif);
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = piix_cable_detect(hwif);
}

if (no_piix_dma)
Index: b/drivers/ide/pci/scc_pata.c
===================================================================
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -716,7 +716,7 @@ static void __devinit init_hwif_scc(ide_
hwif->atapi_dma = 1;

/* we support 80c cable only. */
- hwif->udma_four = 1;
+ hwif->cbl = ATA_CBL_PATA80;

hwif->autodma = 0;
if (!noautodma)
Index: b/drivers/ide/pci/serverworks.c
===================================================================
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -329,9 +329,9 @@ static unsigned int __devinit init_chips
return dev->irq;
}

-static unsigned int __devinit ata66_svwks_svwks (ide_hwif_t *hwif)
+static u8 __devinit ata66_svwks_svwks(ide_hwif_t *hwif)
{
- return 1;
+ return ATA_CBL_PATA80;
}

/* On Dell PowerEdge servers with a CSB5/CSB6, the top two bits
@@ -341,7 +341,7 @@ static unsigned int __devinit ata66_svwk
* Bit 14 clear = primary IDE channel does not have 80-pin cable.
* Bit 14 set = primary IDE channel has 80-pin cable.
*/
-static unsigned int __devinit ata66_svwks_dell (ide_hwif_t *hwif)
+static u8 __devinit ata66_svwks_dell(ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;
if (dev->subsystem_vendor == PCI_VENDOR_ID_DELL &&
@@ -349,8 +349,8 @@ static unsigned int __devinit ata66_svwk
(dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE ||
dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE))
return ((1 << (hwif->channel + 14)) &
- dev->subsystem_device) ? 1 : 0;
- return 0;
+ dev->subsystem_device) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
+ return ATA_CBL_PATA40;
}

/* Sun Cobalt Alpine hardware avoids the 80-pin cable
@@ -359,18 +359,18 @@ static unsigned int __devinit ata66_svwk
*
* WARNING: this only works on Alpine hardware!
*/
-static unsigned int __devinit ata66_svwks_cobalt (ide_hwif_t *hwif)
+static u8 __devinit ata66_svwks_cobalt(ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;
if (dev->subsystem_vendor == PCI_VENDOR_ID_SUN &&
dev->vendor == PCI_VENDOR_ID_SERVERWORKS &&
dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE)
return ((1 << (hwif->channel + 14)) &
- dev->subsystem_device) ? 1 : 0;
- return 0;
+ dev->subsystem_device) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
+ return ATA_CBL_PATA40;
}

-static unsigned int __devinit ata66_svwks (ide_hwif_t *hwif)
+static u8 __devinit ata66_svwks(ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;

@@ -389,9 +389,9 @@ static unsigned int __devinit ata66_svwk
/* Per Specified Design by OEM, and ASIC Architect */
if ((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||
(dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2))
- return 1;
+ return ATA_CBL_PATA80;

- return 0;
+ return ATA_CBL_PATA40;
}

static void __devinit init_hwif_svwks (ide_hwif_t *hwif)
@@ -422,8 +422,8 @@ static void __devinit init_hwif_svwks (i

hwif->ide_dma_check = &svwks_config_drive_xfer_rate;
if (hwif->pci_dev->device != PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
- if (!hwif->udma_four)
- hwif->udma_four = ata66_svwks(hwif);
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = ata66_svwks(hwif);
}
if (!noautodma)
hwif->autodma = 1;
Index: b/drivers/ide/pci/siimage.c
===================================================================
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -933,16 +933,17 @@ static void __devinit init_iops_siimage(
* interface.
*/

-static unsigned int __devinit ata66_siimage(ide_hwif_t *hwif)
+static u8 __devinit ata66_siimage(ide_hwif_t *hwif)
{
unsigned long addr = siimage_selreg(hwif, 0);
- if (pci_get_drvdata(hwif->pci_dev) == NULL) {
- u8 ata66 = 0;
+ u8 ata66 = 0;
+
+ if (pci_get_drvdata(hwif->pci_dev) == NULL)
pci_read_config_byte(hwif->pci_dev, addr, &ata66);
- return (ata66 & 0x01) ? 1 : 0;
- }
+ else
+ ata66 = hwif->INB(addr);

- return (hwif->INB(addr) & 0x01) ? 1 : 0;
+ return (ata66 & 0x01) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
}

/**
@@ -988,8 +989,9 @@ static void __devinit init_hwif_siimage(
hwif->atapi_dma = 1;

hwif->ide_dma_check = &siimage_config_drive_for_dma;
- if (!(hwif->udma_four))
- hwif->udma_four = ata66_siimage(hwif);
+
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = ata66_siimage(hwif);

if (hwif->mmio) {
hwif->ide_dma_test_irq = &siimage_mmio_ide_dma_test_irq;
Index: b/drivers/ide/pci/sis5513.c
===================================================================
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -796,7 +796,7 @@ static unsigned int __devinit init_chips
return 0;
}

-static unsigned int __devinit ata66_sis5513 (ide_hwif_t *hwif)
+static u8 __devinit ata66_sis5513(ide_hwif_t *hwif)
{
u8 ata66 = 0;

@@ -811,7 +811,8 @@ static unsigned int __devinit ata66_sis5
pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
ata66 = (reg48h & mask) ? 0 : 1;
}
- return ata66;
+
+ return ata66 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
}

static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
@@ -841,8 +842,8 @@ static void __devinit init_hwif_sis5513
if (!chipset_family)
return;

- if (!(hwif->udma_four))
- hwif->udma_four = ata66_sis5513(hwif);
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = ata66_sis5513(hwif);

if (chipset_family > ATA_16) {
hwif->ide_dma_check = &sis5513_config_xfer_rate;
Index: b/drivers/ide/pci/slc90e66.c
===================================================================
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -199,10 +199,9 @@ static void __devinit init_hwif_slc90e66
hwif->mwdma_mask = 0x06;
hwif->swdma_mask = 0x04;

- if (!hwif->udma_four) {
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
/* bit[0(1)]: 0:80, 1:40 */
- hwif->udma_four = (reg47 & mask) ? 0 : 1;
- }
+ hwif->cbl = (reg47 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;

hwif->ide_dma_check = &slc90e66_config_drive_xfer_rate;

Index: b/drivers/ide/pci/tc86c001.c
===================================================================
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -220,13 +220,13 @@ static void __devinit init_hwif_tc86c001
hwif->ide_dma_check = &tc86c001_config_drive_xfer_rate;
hwif->dma_start = &tc86c001_dma_start;

- if (!hwif->udma_four) {
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
/*
* System Control 1 Register bit 13 (PDIAGN):
* 0=80-pin cable, 1=40-pin cable
*/
scr1 = hwif->INW(sc_base + 0x00);
- hwif->udma_four = (scr1 & 0x2000) ? 0 : 1;
+ hwif->cbl = (scr1 & 0x2000) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
}

if (!noautodma)
Index: b/drivers/ide/pci/via82cxxx.c
===================================================================
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -448,8 +448,13 @@ static void __devinit init_hwif_via82cxx
hwif->mwdma_mask = 0x07;
hwif->swdma_mask = 0x07;

- if (!hwif->udma_four)
- hwif->udma_four = (vdev->via_80w >> hwif->channel) & 1;
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
+ if ((vdev->via_80w >> hwif->channel) & 1)
+ hwif->cbl = ATA_CBL_PATA80;
+ else
+ hwif->cbl = ATA_CBL_PATA40;
+ }
+
hwif->ide_dma_check = &via82cxxx_ide_dma_check;
if (!noautodma)
hwif->autodma = 1;
Index: b/drivers/ide/ppc/pmac.c
===================================================================
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -942,8 +942,8 @@ pmac_ide_tune_chipset (ide_drive_t *driv
return 1;
case XFER_UDMA_4:
case XFER_UDMA_3:
- if (HWIF(drive)->udma_four == 0)
- return 1;
+ if (drive->hwif->cbl != ATA_CBL_PATA80)
+ return 1;
case XFER_UDMA_2:
case XFER_UDMA_1:
case XFER_UDMA_0:
@@ -1244,7 +1244,7 @@ pmac_ide_setup_device(pmac_ide_hwif_t *p
hwif->chipset = ide_pmac;
hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET] || pmif->mediabay;
hwif->hold = pmif->mediabay;
- hwif->udma_four = pmif->cable_80;
+ hwif->cbl = pmif->cable_80 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
hwif->drives[0].unmask = 1;
hwif->drives[1].unmask = 1;
hwif->tuneproc = pmac_ide_tuneproc;
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -686,6 +686,8 @@ typedef struct hwif_s {
u8 mwdma_mask;
u8 swdma_mask;

+ u8 cbl; /* cable type */
+
hwif_chipset_t chipset; /* sub-module for tuning.. */

struct pci_dev *pci_dev; /* for pci chipsets */
@@ -792,7 +794,6 @@ typedef struct hwif_s {
unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
unsigned reset : 1; /* reset after probe */
unsigned autodma : 1; /* auto-attempt using DMA at boot */
- unsigned udma_four : 1; /* 1=ATA-66 capable, 0=default */
unsigned no_lba48 : 1; /* 1 = cannot do LBA48 */
unsigned no_lba48_dma : 1; /* 1 = cannot do LBA48 DMA */
unsigned auto_poll : 1; /* supports nop auto-poll */
-
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