[PATCH ht6560b] Force prefetch for some devices

2008-02-18 Thread Jan Evert van Grootheest
it is necessary to change the settings in the interface This patch should also be applied to 2.4. I don't currently have a 2.4 tree around. (also change my email address) Signed-off-by: Jan Evert van Grootheest [EMAIL PROTECTED] --- linux-2.6.git/drivers/ide/legacy/ht6560b.c 2008-02-01 18:50

[PATCH] ht6560b can only do up to PIO mode 4

2008-02-18 Thread Jan Evert van Grootheest
According to the datasheet, ht6560b only supports up to PIO mode 4. Signed-off-by: Jan Evert van Grootheest [EMAIL PROTECTED] --- a/drivers/ide/legacy/ht6560b.c +++ b/drivers/ide/legacy/ht6560b.c @@ -343,7 +343,7 @@ int __init ht6560b_init(void) hwif-chipset = ide_ht6560b; hwif-selectproc

DMA on ht6560b?

2008-02-18 Thread Jan Evert van Grootheest
Hi, With digging into the code... I think the ht6560b controller supports DMA. At least it did so in 2.2 (where hdparm could still turn it on). DMA in 2.2 would improve the HD from about 1M/s to 4M/s. So that's quite interesting. Also the datasheet claims that there is full ANSI ATA-4a

Re: DMA on ht6560b?

2008-02-18 Thread Jan Evert van Grootheest
Alan Cox wrote: I think the ht6560b controller supports DMA. The data sheet doesn't. It's a PIO controller capable of PIO4 with 32bit host to cpu transfers are best. Hmm. But what do you then think that 2.2 did? I mean it now does 1.15M/s and in 2.2 it would do ~4M/s with DMA on.

Re: [PATCH ht6560b] Force prefetch for some devices

2008-02-18 Thread Jan Evert van Grootheest
Alan, Alan Cox wrote: On Mon, 18 Feb 2008 13:50:02 +0100 Jan Evert van Grootheest [EMAIL PROTECTED] wrote: Prefetch needs to be set for some ide devices to work when connected to a ht6560b interface. This was not always done properly, causing a system with a HD and CD on the primary

Re: VIA VT6420: SATA disconnects

2007-05-25 Thread Jan Evert van Grootheest
Jeff Garzik wrote: Vasily Averin wrote: Jeff, Tejun, Our RHEL5-based OpenVZ linux kernel reports about SATA-related issues: VIA VT6420 SATA RAID Controller on MSI motherboard, x86_64 kernel based on latest RHEL5 kernel, On booting hardware initialized properly and all works fine some time,