Re: harddisk DMA

[Uwe <k8user@web.de>]

On Friday 18 March 2005 14:54, Lennart Sorensen wrote:

>
> Could you include the section of dmesg where ide is detected and setup?
> Gotta make sure it didn't load ide-generic before the sis driver in
> which case the generic driver (which is not dma capable obviously) is
> running the drives instead of the native sis driver (which likely does
> support dma).
>
> Also which model HD is it?  Some are blicklisted in the kernel for
> having some firmware bug that makes the drive unreliable with dma
> enabled on certain controllers.
>
> Len Sorensen

Hi Len,

here is the corresponding snippet of dmesg.

Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
SIS5513: IDE controller at PCI slot 0000:00:02.5
SIS5513: chipset revision 1
SIS5513: not 100% native mode: will probe irqs later
Probing IDE interface ide0...
hda: IC35L080AVVA07-0, ATA DISK drive
hdb: HL-DT-ST DVDRAM GSA-4163B, ATAPI CD/DVD-ROM drive
Probing IDE interface ide1...
hdc: HDS722525VLAT80, ATA DISK drive
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide4...
Probing IDE interface ide5...
elevator: using anticipatory as default io scheduler
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 160836480 sectors (82348 MB) w/1863KiB Cache, CHS=65535/16/63
hda: cache flushes supported
 /dev/ide/host0/bus0/target0/lun0: p1 p2
hdc: max request size: 1024KiB
hdc: 488397168 sectors (250059 MB) w/7938KiB Cache, CHS=30401/255/63
hdc: cache flushes supported
 /dev/ide/host1/bus0/target0/lun0: p1

my harddrives are both newer hitachi 80/250GB. I commented out the generic 
part in /etc/modules and added sis5513 at the first line. but lsmod still 
mentions this:

ide_core              146948  28 
ide_cd,ide_generic,via82cxxx,trm290,triflex,slc90e66,sis5513,siimage,serverworks,sc1200,rz1000,piix,pdc202xx_old,opti621,ns87415,hpt366,ide_disk,hpt34x,generic,cy82c693,cs5530,cs5520,cmd64x,atiixp,amd74xx,alim15x3,aec62xx,pdc202xx_new

this looks horrible to me. i don't know, how that hotplug-thing is working 
maybe it is due some action it does...

greetings
Uwe

-- 
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ASUS K8S-MX, 2800+ (754), 512MB, gnuLinux v2.6.x