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List:       linux-kernel
Subject:    Re: Alpha MIATA + PCI - trouble?
From:       Richard Henderson <rth () cygnus ! com>
Date:       1998-08-31 22:10:52
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On Mon, Aug 31, 1998 at 03:09:21PM +0200, Jaroslav Kysela wrote:
> 	I'm now trying soundcard S3 SonicVibes with Alpha MIATA (pyxis),
> but I have big trouble with access to DMA registers. These registers are
> accessible via non-standard PCI interface (I/O address - port address -
> is stored in 32-bit PCI registers 0x40 & 0x48).
[...]
>  kernel: PYXIS machine check NOT expected
>  kernel: pyxis_machine_check: vector=0x660 la_ptr=0xfffffc00002085a0
>  kernel: ^I^I pc=0xfffffc000047be88 size=0x1b8 procoffset=0xd8 sysoffset 0x160

You should use pci_read_config_byte and friends.  A machine check
is the expected result of not using these functions.


r~

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