Bug 82709

Summary:	OpenCL not working on radeon hainan
Product:	Mesa	Reporter:	Pali Rohár <pali.rohar>
Component:	Drivers/Gallium/radeonsi	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium	CC:	pali.rohar
Version:	git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	Work around for missing Hainan in clang

Description Pali Rohár 2014-08-16 19:23:25 UTC

OpenCL not working on Radeon HD 8690M card which has Hainan chip.

example hello world application shows this error log:

Build Log:
error: unknown target CPU 'hainan'

haagch on #dri-devel suggested me to:
$ sudo sed -i "s/tahiti/hainan/" /usr/lib/libMesaOpenCL.so

and after this "fix" I got:

Build Log:
fatal error: cannot open file '/usr/lib/clc/hainan-r600--.bc': No such file or directory

After that he suggested me to renaming tahiti-r600--.bc to hainan-r600--.bc which fixed that problem and OpenCL started working.

So problem is probably in clang and libclc -- that there is missing hainan name in cpu table.

Comment 1 Tom Stellard 2014-08-19 20:21:12 UTC

Created attachment 104915 [details] [review]
Work around for missing Hainan in clang

Does it work with this Mesa patch?

Comment 2 Ilia Mirkin 2014-08-19 20:25:43 UTC

(In reply to comment #1)
> Created attachment 104915 [details] [review] [review]
> Work around for missing Hainan in clang
> 
> Does it work with this Mesa patch?

missing break...

Comment 3 Pali Rohár 2014-08-20 08:42:21 UTC

I added missing break after both gpu = lines, recompiled mesa with that patch and opencl examples started working without above sed and symlink hacks.

Comment 4 Tom Stellard 2014-08-21 14:09:18 UTC

Fixed in git commit 8109664dedee588dc98c9a7c25bd40c0eb56c35f

Comment 5 Pali Rohár 2014-08-22 08:03:07 UTC

@Tom Stellard: Are you going to fix this problem in llvm/clang/libclc?

Comment 6 Alex Deucher 2014-08-22 12:25:26 UTC

(In reply to comment #5)
> @Tom Stellard: Are you going to fix this problem in llvm/clang/libclc?

IIRC, it's already working with newer versions of clang.

Comment 7 Tom Stellard 2014-08-22 17:10:15 UTC

(In reply to comment #5)
> @Tom Stellard: Are you going to fix this problem in llvm/clang/libclc?

Yes, it's fixed in llvm/clang 3.6 and I'll try to backport the patch for llvm/clang 3.5.1.

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