Re: [gentoo-user] Howto get nvidia serial ATA with DMA running

Hi,

On Dienstag, 17. April 2007, Matthias Fechner wrote:
> Hi,
>
> I have here an AMD64 (32-bit installation) with a MSI K8N-Neo2FX
> running.
> Gentoo is installed on a serial ATA drive.
> lspci says:
> 00:09.0 IDE interface: nVidia Corporation CK8S Serial ATA Controller (v2.5)
> (rev a2) 00:0a.0 IDE interface: nVidia Corporation CK8S Serial ATA
> Controller (v2.5) (rev a2) 00:0b.0 PCI bridge: nVidia Corporation nForce3
> 250Gb AGP Host to PCI Bridge (rev a2) 00:0e.0 PCI bridge: nVidia
> Corporation nForce3 250Gb PCI-to-PCI Bridge (rev a2)
>
> I i try now to enable DMA transfer with:
> hdparm -d1 /dev/sda
> /dev/sda:
>  setting using_dma to 1 (on)
>  HDIO_SET_DMA failed: Inappropriate ioctl for device

which is correct. You don't set dma for SATA devices and you don't do it with 
hdparm.

>
> So my first thought was, check kernel for the right driver.
> But nv_sata is selected (statically).
>
> I checked dmesg and found:
> nv_sata: Primary device added
> nv_sata: Primary device removed
> nv_sata: Secondary device removed
> ata1: dev 0 configured for UDMA/133

as you can see, it uses udma/133 already.

> scsi0 : sata_nv
> ata2: SATA link down (SStatus 0)
> scsi1 : sata_nv
>   Vendor: ATA       Model: ST3250820NS       Rev: 3.AE
>   Type:   Direct-Access                      ANSI SCSI revision: 05
> SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB)
> sda: Write Protect is off
> sda: Mode Sense: 00 3a 00 00
> SCSI device sda: drive cache: write back
> SCSI device sda: 488397168 512-byte hdwr sectors (250059 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
> sd 0:0:0:0: Attached scsi disk sda
>
> I boot my system with grub and had the option from the installer
> "doscsi" in the boot params.
>
> Must I use a different driver for that sata controller?

No.
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