On Sun, Aug 09, 2020 at 10:01:43AM -0600, Andy Bradford wrote:
> Thus said Jonathan Gray on Sun, 09 Aug 2020 12:39:36 +1000:
>
> > When this came up previously running i386 resulted in being able to
> > read the atombios. Can you confirm that is the case here?
>
> Yes, this is the case. I installed OpenBSD 6.7 i386 to the same hardware
> and there is no error in dmesg and X starts up without requiring
> machdep.allowaperture to be set.
>
> > The drm code in -current/snapshots has been replaced by a new port of
> > the linux 5.7 code so behaviour there may change.
>
> I tried the amd64 current/snapshot from August 8 and it has the same
> problem.
>
> I guess for now I can reinstall with i386 unless there is something else
> that I should try for debugging. I can provide whatever is needed.
>
> Thanks,
>
> Andy
I can't spot a likely cause for this.
For now we could just skip reading a disabled bios on RV610.
Both of the reports on this were for Dell machines with RV610.
Sebastien with OptiPlex 755
RV610 0x1002:0x94C3 0x1028:0x0402 0x00
and your DXP051
RV610 0x1002:0x94C1 0x1028:0x0D02 0x00
Index: src/sys/dev/pci/drm/radeon/radeon_bios.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/drm/radeon/radeon_bios.c,v
retrieving revision 1.17
diff -u -p -r1.17 radeon_bios.c
--- src/sys/dev/pci/drm/radeon/radeon_bios.c 8 Jun 2020 04:48:15 -0000
1.17
+++ src/sys/dev/pci/drm/radeon/radeon_bios.c 10 Aug 2020 13:41:43 -0000
@@ -524,6 +524,9 @@ static bool r600_read_disabled_bios(stru
uint32_t lower_gpio_enable;
bool r;
+ if (rdev->family == CHIP_RV610)
+ return false;
+
viph_control = RREG32(RADEON_VIPH_CONTROL);
bus_cntl = RREG32(R600_BUS_CNTL);
d1vga_control = RREG32(AVIVO_D1VGA_CONTROL);
