Bug 6872

Summary:

Radeon 7000 option ROM inaccessible w/ digital output enabled

Product:

xorg

Reporter:

Alex Williamson <alex.williamson>

Component:

* Other

Assignee:

Xorg Project Team <xorg-team>

Status:

RESOLVED FIXED

QA Contact:

Severity:

normal

Priority:

high

CC:

alexdeucher

Version:

git

Keywords:

patch

Hardware:

PA-RISC (HP)

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
Radeon 7000 errata	none
proposed patch	none

Description Alex Williamson 2006-05-10 00:51:34 UTC

ATI has recently released an errata for Radeon 7000 (PCI device ID 0x5159) to
indicate that the video BIOS is inaccessible from an attached serial EPROM when
digital video out is enabled on the chip (ie. when FP2_ON is set).  ia64 systems
have a problem with this as they cannot tolerate the read failure from the PCI
option ROM space.  The workaround is to disable digital video out around the
int10 initialization, allowing the BIOS to be read.  I'll attach the errata
document and a proposed patch.

Comment 1 Alex Williamson 2006-05-10 00:56:37 UTC

Created attachment 5581 [details]
Radeon 7000 errata

ATI has approved distribution of this errata to X.org

Comment 2 Alex Williamson 2006-05-10 01:47:08 UTC

Created attachment 5582 [details] [review]
proposed patch

Comment 3 Michel Dänzer 2006-07-02 14:18:52 UTC

Any reason why this code shouldn't be active on other architectures as well?

Comment 4 Alex Williamson 2006-07-02 22:13:37 UTC

No, this could be activated on all architectures.

Comment 5 Michel Dänzer 2006-07-03 04:13:58 UTC

Thanks, pushed to xf86-video-ati git.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.