Re: [gentoo-user] setting "using_dma" on a BenQ DVD/RW drive

[Norbert Kamenicky <noro@xmedia.sk>]

Roy Wright wrote:

-snip-

> I'm having the same issue with a Memorex DVD writer.
> Googling suggests making sure the IDE controller
> chipset module is loaded.  My problem is that I don't
> see a config module option for Intel 82801EB (ICH5).
> 

Yes u are right, IMO it has nothing to do with CD/DVD writer
or HDD itself, it depends on IDE chipset driver.
My mobo is also based on i865 chipset, one SATA and one PATA
HDD connected.
If I use 2.4 kernel, both drives are fast, also DMA on PATA drive
is on, but using 2.6 kernel PATA HDD gives sustain rate only
~2MB/s, DMA setting fails with "Operation not permitted" error.

"lshw" says this:

       *-ide
             description: IDE interface
             product: 82801EB (ICH5) SATA Controller
             vendor: Intel Corporation
             physical id: 1f.2
             bus info: pci@00:1f.2
             logical name: scsi0
             version: 02
             width: 32 bits
             clock: 66MHz
             capabilities: ide bus_master emulated
             configuration: driver=ata_piix  <<<<<<<<<
             resources: ioport:fc00-fc0f irq:18

# grep -i "pii\|ata"  /usr/src/linux/.config:

CONFIG_BLK_DEV_PIIX=y
CONFIG_SCSI_SATA=y
# CONFIG_SCSI_SATA_AHCI is not set
# CONFIG_SCSI_SATA_SVW is not set
CONFIG_SCSI_ATA_PIIX=y
# CONFIG_SCSI_SATA_NV is not set
# CONFIG_SCSI_SATA_PROMISE is not set
# CONFIG_SCSI_SATA_QSTOR is not set
# CONFIG_SCSI_SATA_SX4 is not set
# CONFIG_SCSI_SATA_SIL is not set
# CONFIG_SCSI_SATA_SIS is not set
# CONFIG_SCSI_SATA_ULI is not set
# CONFIG_SCSI_SATA_VIA is not set
# CONFIG_SCSI_SATA_VITESSE is not set
# CONFIG_SCSI_EATA is not set
# CONFIG_ATALK is not set
CONFIG_I2C_PIIX4=m
CONFIG_USB_STORAGE_DATAFAB=y


Although I have "ata_piix.o" compiled in kernel (listed by lshw), there
is only slow generic PATA support available.

noro


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