No DMA support

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I have an AMD 64bit System with the 64bit Fedora installed. Unfortunately, I have two issues with it.

1) Fedora does not recognise the onboard lan. I have fiddled bios settings with plug and play os and enabled the lan etc, but to no avail. Problem circumvented with PCI ethernet card.

2) I cannot get the dma on the harddrives to work - which doesn't make it much good at serving files.

I've searched the Fedora list back to volume 8, to no avail. Googling suggests that I need to recompile the kernel with support for the chipset that my motherboard (ASUS K8S-MX) uses. Is recompiling the kernel going to give me the option for this chipset? Different types of drives (Maxtor 300G & Seagate 200G) do not appear to make any difference.

Any help or suggestions gratefully received.

Possibly useful information provided below:

lspci provides (extract):
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev 01)

[root@www ~]# hdparm -d1 /dev/hda
/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma    =  0 (off)

[root@www ~]# hdparm -t /dev/hda
/dev/hda:
Timing buffered disk reads:   10 MB in  3.55 seconds =   2.81 MB/sec

[root@www ~]# hdparm -I /dev/hda
/dev/hda:
ATA device, with non-removable media
Model Number: ST3200822A Serial Number: 3LJ05NG8
Firmware Revision: 3.01 Standards:
Used: ATA/ATAPI-6 T13 1410D revision 2
Supported: 6 5 4 3
Configuration:
Logical max current
cylinders 16383 65535
heads 16 1
sectors/track 63 63
--
CHS current addressable sectors: 4128705
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 390721968
device size with M = 1024*1024: 190782 MBytes
device size with M = 1000*1000: 200049 MBytes (200 GB)
Capabilities:
LBA, IORDY(can be disabled)
bytes avail on r/w long: 4 Queue depth: 1
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 128, current value: 0
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=240ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* READ BUFFER cmd
* WRITE BUFFER cmd
* Host Protected Area feature set
* Look-ahead
* Write cache
* Power Management feature set
Security Mode feature set
* SMART feature set
* FLUSH CACHE EXT command
* Mandatory FLUSH CACHE command
* Device Configuration Overlay feature set
* 48-bit Address feature set
SET MAX security extension
* DOWNLOAD MICROCODE cmd
* SMART self-test
* SMART error logging
Security:
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
HW reset results:
CBLID- above Vih
Device num = 0 determined by the jumper
Checksum: correct



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