Date: Mon, 16 Apr 2012 15:30:44 GMT From: Andreas Tobler <andreast@FreeBSD.org> To: freebsd-gnats-submit@FreeBSD.org Subject: ports/166998: [patch] fix radeon driver for powerpc(64) xf84-video-ati (6.14.3) Message-ID: <201204161530.q3GFUilS084144@red.freebsd.org> Resent-Message-ID: <201204161540.q3GFeAl8084538@freefall.freebsd.org>
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>Number: 166998 >Category: ports >Synopsis: [patch] fix radeon driver for powerpc(64) xf84-video-ati (6.14.3) >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-ports-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Apr 16 15:40:09 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Andreas Tobler >Release: -CURRENT >Organization: none >Environment: FreeBSD helium.andreas.nets 10.0-CURRENT FreeBSD 10.0-CURRENT #17 r234280:234281M: Sat Apr 14 23:04:49 CEST 2012 andreast@helium.andreas.nets:/usr/obj/export/devel/fbsd/src/sys/GENERIC32_G5 powerpc >Description: A longstanding bug in the RADEONCopySwap routine causes a Bus Error on FreeBSD powerpc during init. The fix is present in the ati-git repo. Tested on FreeBSD/ppc 32-bit (me) and 64-bit Ian Chapman <packages at amiga-hardware dot com> >How-To-Repeat: >Fix: Put the attached file into the files directory of xf86-video-ati. Further details here: http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/commit/?id=66b586b9b9cdaf70f0fcd547b5a04f044d848d44 Patch attached with submission follows: --- src/radeon_accel.c.orig 2012-04-15 19:36:08.000000000 +0200 +++ src/radeon_accel.c 2012-04-15 19:36:15.000000000 +0200 @@ -982,10 +982,9 @@ for (; nwords > 0; --nwords, ++d, ++s) #ifdef __powerpc__ - asm volatile("stwbrx %0,0,%1" : : "r" (*s), "r" (d)); + asm volatile("sthbrx %0,0,%1" : : "r" (*s), "r" (d)); #else - *d = ((*s >> 24) & 0xff) | ((*s >> 8) & 0xff00) - | ((*s & 0xff00) << 8) | ((*s & 0xff) << 24); + *d = (*s >> 8) | (*s << 8); #endif return; } >Release-Note: >Audit-Trail: >Unformatted:
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