ibook2r2 & strange freeze.

[Benjamin Herrenschmidt]

On Sun, 2003-04-27 at 00:32, Brice Figureau wrote:
> On Sunday, April 27, 2003, at 12:13 AM, Benjamin Herrenschmidt wrote:
> >> disassembly:
> >> c0184554 380b0e40 addi	r0,r11,3640
> >> c0184558 7c00042c lwbrx	r0,r0,r0
> >> c018455c 0c000000 twi	0,r0,0   <---- pc
> >> c0184560 4c00012c isync
> > [snip]
>
> > Hrm... Interesting. It dies reading from the chip (MMIO). Can you
> > check with xmon "h" command if there's a translation for 0xd9000000 ?
> I'll do that at my next reboot.
>
> > (Or hack radeonfb init to printk the result of ioremap of the registers
> > to see if it's really 0xd9000000 or if the structure was corrupted some
> > way)
> I'll try to find where is the init.
>
> >
> > What is the exact error in xmon ? (vector number)
> Vector 200

Ah, that's a machine check... interesting. So either the address above
is bogus, or the card is crashed. In this later case, noaccel should
have helped, except if, for some reason, the argument was ignored
when setting the initial mode...


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