Re: pata_via in 2.6.19-rc6: UDMA/66 hdd downgraded to UDMA/33

[Krzysztof Oledzki <olel@ans.pl>]

On Wed, 29 Nov 2006, Alan wrote:

> Does this fix it
>
> --- drivers/ata/pata_via.c~	2006-11-29 15:16:10.961387472 +0000
> +++ drivers/ata/pata_via.c	2006-11-29 15:17:08.784597008 +0000
> @@ -60,7 +60,7 @@
> #include <linux/libata.h>
>
> #define DRV_NAME "pata_via"
> -#define DRV_VERSION "0.2.0"
> +#define DRV_VERSION "0.2.1"
>
> /*
>  *	The following comes directly from Vojtech Pavlik's ide/pci/via82cxxx
> @@ -159,10 +159,13 @@
> 			return -ENOENT;
> 	}
>
> -	if ((config->flags & VIA_UDMA) >= VIA_UDMA_66)
> +	if ((config->flags & VIA_UDMA) >= VIA_UDMA_100)
> 		ap->cbl = via_cable_detect(ap);
> -	else
> +	/* 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;
> +
> +
> 	return ata_std_prereset(ap);
> }

Yes and no - UDMA66 gets enabled, but with both 80-wire and 40-wire 
cables.

* With 80-wire cable:
pata_via 0000:00:07.1: version 0.1.14
ata1: PATA max UDMA/66 cmd 0x1F0 ctl 0x3F6 bmdma 0xFFA0 irq 14
ata2: PATA max UDMA/66 cmd 0x170 ctl 0x376 bmdma 0xFFA8 irq 15
scsi0 : pata_via
ata1.00: ATA-5, max UDMA/66, 40031712 sectors: LBA
ata1.00: ata1: dev 0 multi count 16
ata1.00: configured for UDMA/66
scsi1 : pata_via
ata2: port is slow to respond, please be patient (Status 0xff)
ata2: port failed to respond (30 secs, Status 0xff)
ata2: SRST failed (status 0xFF)
ata2: SRST failed (err_mask=0x100)
ata2: softreset failed, retrying in 5 secs
ata2: SRST failed (status 0xFF)
ata2: SRST failed (err_mask=0x100)
ata2: softreset failed, retrying in 5 secs
ata2: SRST failed (status 0xFF)
ata2: SRST failed (err_mask=0x100)
ata2: reset failed, giving up
scsi 0:0:0:0: Direct-Access     ATA      FUJITSU MPF3204A 0031 PQ: 0 ANSI: 5
SCSI device sda: 40031712 512-byte hdwr sectors (20496 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
SCSI device sda: 40031712 512-byte hdwr sectors (20496 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
 sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 >
sd 0:0:0:0: Attached scsi disk sda
(...)

* With 40-wire cable:
pata_via 0000:00:07.1: version 0.1.14
ata1: PATA max UDMA/66 cmd 0x1F0 ctl 0x3F6 bmdma 0xFFA0 irq 14
ata2: PATA max UDMA/66 cmd 0x170 ctl 0x376 bmdma 0xFFA8 irq 15
scsi0 : pata_via
ata1.00: ATA-5, max UDMA/66, 40031712 sectors: LBA
ata1.00: ata1: dev 0 multi count 16
ata1.00: configured for UDMA/66
scsi1 : pata_via
ata2: port is slow to respond, please be patient (Status 0xff)
ata2: port failed to respond (30 secs, Status 0xff)
ata2: SRST failed (status 0xFF)
ata2: SRST failed (err_mask=0x100)
ata2: softreset failed, retrying in 5 secs
ata2: SRST failed (status 0xFF)
ata2: SRST failed (err_mask=0x100)
ata2: softreset failed, retrying in 5 secs
ata2: SRST failed (status 0xFF)
ata2: SRST failed (err_mask=0x100)
ata2: reset failed, giving up
scsi 0:0:0:0: Direct-Access     ATA      FUJITSU MPF3204A 0031 PQ: 0 ANSI: 5
SCSI device sda: 40031712 512-byte hdwr sectors (20496 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
SCSI device sda: 40031712 512-byte hdwr sectors (20496 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
 sda:<3>ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata1.00: (BMDMA stat 0x20)
ata1.00: tag 0 cmd 0xc8 Emask 0x10 stat 0x51 err 0x84 (ATA bus error)
ata1: soft resetting port
ata1.00: configured for UDMA/66
ata1: EH complete
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata1.00: (BMDMA stat 0x20)
ata1.00: tag 0 cmd 0xc8 Emask 0x10 stat 0x51 err 0x84 (ATA bus error)
ata1: soft resetting port
ata1.00: configured for UDMA/66
ata1: EH complete
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata1.00: (BMDMA stat 0x20)
ata1.00: tag 0 cmd 0xc8 Emask 0x10 stat 0x51 err 0x84 (ATA bus error)
ata1: soft resetting port
ata1.00: configured for UDMA/66
ata1: EH complete
ata1.00: limiting speed to UDMA/44
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata1.00: (BMDMA stat 0x20)
ata1.00: tag 0 cmd 0xc8 Emask 0x10 stat 0x51 err 0x84 (ATA bus error)
ata1: soft resetting port
ata1.00: configured for UDMA/44
ata1: EH complete
 sda1 sda2 sda3 sda4 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 >
sd 0:0:0:0: Attached scsi disk sda



Besr regards,

				Krzysztof Olędzki