Re: Tyan 2466, 2468 BIOS setting

Ivan Pulleyn (ivan@sixfold.com)
Wed, 27 Nov 2002 13:03:44 -0600 (CST)


The kernel reads the the BIOS setting and tries to determine what
addressing mode to use:

http://www.win.tue.nl/~aeb/linux/Large-Disk-11.html#ss11.1

Ivan...

On Wed, 27 Nov 2002, Steven Timm wrote:

>
> In a number of boards with Phoenix BIOS including
> the Tyan S2466 and S2468, there is a setting in the BIOS
> for "Large Disk Access Mode", the available settings are
> "DOS" and "Other". Tyan docs suggest selecting "other".
>
> These boards use the AMD 760MPX chipset. (dmesg output is below).
> My question...is anyone aware of (1) does the kernel look
> at this BIOS option at all, and if so (2) could having
> it set to DOS instead of Other lead to any
> data corruption?
>
> Steve Timm
>
>
>
> Kernel 2.4.9-31smp detects it as:
>
> PCI_IDE: unknown IDE controller on PCI bus 00 device 39, VID=1022,
> DID=7441
> PCI_IDE: chipset revision 4
> PCI_IDE: not 100% native mode: will probe irqs later
> ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
> ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
> hda: ST340016A, ATA DISK drive
> hdb: ST380021A, ATA DISK drive
> hdc: CD-ROM 56X/AKH, ATAPI CD/DVD-ROM drive
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide1 at 0x170-0x177,0x376 on irq 15
> hda: 78165360 sectors (40021 MB) w/2048KiB Cache, CHS=4865/255/63
> hdb: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=9729/255/63
>
> from lspci
>
> 00:07.1 IDE interface: Advanced Micro Devices [AMD]: Unknown device 7441
> (rev 04)
>
> -----------------------------------------
>
> Kernel 2.4.18-18smp detects it as:
>
> AMD7441: IDE controller on PCI bus 00 dev 39
> AMD7441: chipset revision 4
> AMD7441: not 100% native mode: will probe irqs later
> AMD7441: disabling single-word DMA support (revision < C4)
> ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
> ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
> hda: WDC WD400BB-00DEA0, ATA DISK drive
> hdb: WDC WD800BB-00CAA1, ATA DISK drive
> hdc: SR243T, ATAPI CD/DVD-ROM drive
> hdd: WDC WD1200BB-00CAA1, ATA DISK drive
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide1 at 0x170-0x177,0x376 on irq 15
> blk: queue c03f9ce4, I/O limit 4095Mb (mask 0xffffffff)
> blk: queue c03f9ce4, I/O limit 4095Mb (mask 0xffffffff)
> hda: 78165360 sectors (40021 MB) w/2048KiB Cache, CHS=4865/255/63,
> UDMA(100)
> blk: queue c03f9e2c, I/O limit 4095Mb (mask 0xffffffff)
> blk: queue c03f9e2c, I/O limit 4095Mb (mask 0xffffffff)
> hdb: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=9729/255/63,
> UDMA(100)
> blk: queue c03fa188, I/O limit 4095Mb (mask 0xffffffff)
> blk: queue c03fa188, I/O limit 4095Mb (mask 0xffffffff)
>
>
>
> ------------------------------------------------------------------
> Steven C. Timm (630) 840-8525 timm@fnal.gov http://home.fnal.gov/~timm/
> Fermilab Computing Division/Operating Systems Support
> Scientific Computing Support Group--Computing Farms Operations
>
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-- 

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