On Thursday 24 September 2009 1:25:15 am Daniel O'Connor wrote:
> On Wed, 23 Sep 2009, Attilio Rao wrote:
> > 2009/9/23 Daniel O'Connor <docon...@gsoft.com.au>:
> > > If I enable the parallel port on this Gigabyte MA7785GM-US2H I get
> > > a trap 12 when booting up.
> > >
> > > I forgot to take a picture of it at the time but I should be able
> > > to reproduce it tomorrow.
> > >
> > > Has anyone seen anything before? (a quick google showed nothing). I
> > > did not see it on 7.2(ish) on the same hardware.
> >
> > Are you able to enable KDB in your kernel config and return a
> > backtrace here?
>
> Yes, here it is..
>
> pmap_extract() at pmap_extract+0x13a
> isa_dmarangecheck() at isa_dmarangecheck+0x7a
> isa_dma_init() at isa_dma_init+0xda
> ppc_isa_attach() at ppc_sa_attach+0x40
> device_attach() at device_attach+0x69
> bus_generic_attach() at bus_generic_attach+0x1a
> acpi_attach() at acpi_attach+0x9f8
>
> (there's more but I imagine the above is probably sufficient).
Can you try this patch perhaps:
Index: sys/amd64/isa/isa_dma.c
===================================================================
--- isa_dma.c (revision 197430)
+++ isa_dma.c (working copy)
@@ -247,7 +247,7 @@
}
/* translate to physical */
- phys = pmap_extract(kernel_pmap, (vm_offset_t)addr);
+ phys = pmap_kextract((vm_offset_t)addr);
if (flags & ISADMA_RAW) {
dma_auto_mode |= (1 << chan);
@@ -371,7 +371,7 @@
endva = (vm_offset_t)round_page((vm_offset_t)va + length);
for (; va < (caddr_t) endva ; va += PAGE_SIZE) {
- phys = trunc_page(pmap_extract(kernel_pmap, (vm_offset_t)va));
+ phys = trunc_page(pmap_kextract((vm_offset_t)va));
if (phys == 0)
panic("isa_dmacheck: no physical page present");
if (phys >= ISARAM_END)
--
John Baldwin
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