No DMA for IDE DVD drive?

[Mike White]

Hello all,

I'm trying to get DMA going for my IDE DVD drive, /dev/hda (my HD is SATA)


$ sudo hdparm /dev/hda

/dev/hda:
  HDIO_GET_MULTCOUNT failed: Invalid argument
  IO_support   =  0 (default 16-bit)
  unmaskirq    =  0 (off)
  using_dma    =  0 (off)
  keepsettings =  0 (off)
  readonly     =  0 (off)
  readahead    = 256 (on)
  HDIO_GETGEO failed: Invalid argument


$ sudo hdparm -d1 /dev/hda

/dev/hda:
  setting using_dma to 1 (on)
  HDIO_SET_DMA failed: Operation not permitted
  using_dma    =  0 (off)

$ lspci
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8385 [K8T800 AGP] 
Host Bridge (rev 01)
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge 
[K8T800 South]0000:00:07.0 FireWire (IEEE 1394): VIA Technologies, Inc. 
IEEE 1394 Host Controller (rev 80)
0000:00:0a.0 Ethernet controller: Marvell Yukon Gigabit Ethernet 
10/100/1000Base-T Adapter (rev 13)
0000:00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA 
RAID Controller (rev 80)
0000:00:0f.1 IDE interface: VIA Technologies, Inc. 
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
0000:00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 
1.1 Controller (rev 81)
0000:00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 
1.1 Controller (rev 81)
0000:00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 
1.1 Controller (rev 81)
0000:00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 
1.1 Controller (rev 81)
0000:00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
0000:00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge 
[K8T800 South]0000:00:11.5 Multimedia audio controller: VIA 
Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
0000:00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:01:00.0 VGA compatible controller: nVidia Corporation NV34 [GeForce 
FX 5200] (rev a1)


$ lsmod | grep via
snd_via82xx            30436  3
snd_ac97_codec         70276  1 snd_via82xx
snd_pcm                97828  2 snd_via82xx,snd_pcm_oss
snd_page_alloc         12816  2 snd_via82xx,snd_pcm
gameport                5120  1 snd_via82xx
snd_mpu401_uart         8064  1 snd_via82xx
snd                    55912  11 
snd_via82xx,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device
via82cxxx              14256  1
ide_core              150496  4 via82cxxx,ide_generic,ide_disk,ide_cd
sata_via                8580  3
libata                 42632  2 sata_via,sata_promise


$ uname -a
Linux (me) 2.6.8.1-3-amd64-generic #1 Tue Oct 12 11:40:38 UTC 2004 
x86_64 GNU/Linux


Does anyone have any suggestions?

Thanks,
mike