diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2016-05-07 22:46:55 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2016-05-07 22:46:55 +0000 |
| commit | 10eb8d43895504cd22def3c6f7ec6598f8c467b2 (patch) | |
| tree | 0df915e840ffa5870bddc1ef69c952704bfc506b /sys/arch | |
| parent | 650facc722a5d25a565fc27ea364e14296322daa (diff) | |
Flush page (through the direct map) before mapping it into AGP. Fixes
artifacts seen in X on some G5 machines. Unfortunately not enough to fix
G4 machines. With help from Marcus Glocker.
ok mpi@
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/powerpc/include/cpu.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sys/arch/powerpc/include/cpu.h b/sys/arch/powerpc/include/cpu.h index 8efe02d895b..494dccb3b1a 100644 --- a/sys/arch/powerpc/include/cpu.h +++ b/sys/arch/powerpc/include/cpu.h @@ -1,4 +1,4 @@ -/* $OpenBSD: cpu.h,v 1.62 2015/07/02 01:33:59 dlg Exp $ */ +/* $OpenBSD: cpu.h,v 1.63 2016/05/07 22:46:54 kettenis Exp $ */ /* $NetBSD: cpu.h,v 1.1 1996/09/30 16:34:21 ws Exp $ */ /* @@ -232,6 +232,22 @@ invdcache(void *from, int len) __asm volatile ("sync"); } +static __inline void +flushdcache(void *from, int len) +{ + int l; + char *p = from; + + len = len + (((u_int32_t) from) & (CACHELINESIZE - 1)); + l = len; + + do { + __asm volatile ("dcbf 0,%0" :: "r"(p)); + p += CACHELINESIZE; + } while ((l -= CACHELINESIZE) > 0); + __asm volatile ("sync"); +} + #define FUNC_SPR(n, name) \ static __inline u_int32_t ppc_mf ## name (void) \ { \ |