4 files changed, 26 insertions, 6 deletions
diff --git a/src/mesa/drivers/dri/common/memops.h b/src/mesa/drivers/dri/common/memops.h
new file mode 100644
index 00000000000..4952d788e81
--- /dev/null
+++ b/src/mesa/drivers/dri/common/memops.h
@@ -0,0 +1,17 @@
+#ifndef DRIMEMSETIO_H
+#define DRIMEMSETIO_H
+/*
+* memset an area in I/O space
+* We need to be careful about this on some archs
+*/
+static __inline__ void drimemsetio(void* address, int c, int size)
+{
+#if defined(__powerpc__) || defined(__ia64__)
+     int i;
+     for(i=0;i<size;i++)
+        *((char *)address + i)=c;
+#else
+     memset(address,c,size);
+#endif
+}
+#endif
diff --git a/src/mesa/drivers/dri/mga/server/mga_dri.c b/src/mesa/drivers/dri/mga/server/mga_dri.c
index 958252b3e47..35e28fec4b1 100644
--- a/src/mesa/drivers/dri/mga/server/mga_dri.c
+++ b/src/mesa/drivers/dri/mga/server/mga_dri.c
@@ -36,6 +36,7 @@
 
 #include "driver.h"
 #include "drm.h"
+#include "memops.h"
 
 #include "mga_reg.h"
 #include "mga.h"
@@ -805,11 +806,11 @@ static int MGAScreenInit( struct DRIDriverContextRec *ctx, MGAPtr pMga )
     * the clear ioctl to do this, but would need to setup hw state
     * first.
     */
-   memset((char *)ctx->FBAddress + pMga->frontOffset,
+   drimemsetio((char *)ctx->FBAddress + pMga->frontOffset,
 	  0,
 	  pMga->frontPitch * ctx->shared.virtualHeight );
 
-   memset((char *)ctx->FBAddress + pMga->backOffset,
+   drimemsetio((char *)ctx->FBAddress + pMga->backOffset,
 	  0,
 	  pMga->backPitch * ctx->shared.virtualHeight );
 
diff --git a/src/mesa/drivers/dri/r128/server/r128_dri.c b/src/mesa/drivers/dri/r128/server/r128_dri.c
index a2b717b0ea3..4cc3c23098f 100644
--- a/src/mesa/drivers/dri/r128/server/r128_dri.c
+++ b/src/mesa/drivers/dri/r128/server/r128_dri.c
@@ -47,6 +47,7 @@
 
 #include "driver.h"
 #include "drm.h"
+#include "memops.h"
 
 #include "r128.h"
 #include "r128_dri.h"
@@ -826,11 +827,11 @@ static GLboolean R128DRIScreenInit(DRIDriverContext *ctx)
     * the clear ioctl to do this, but would need to setup hw state
     * first.
     */
-   memset((char *)ctx->FBAddress + info->frontOffset,
+   drimemsetio((char *)ctx->FBAddress + info->frontOffset,
 	  0,
 	  info->frontPitch * ctx->cpp * ctx->shared.virtualHeight );
 
-   memset((char *)ctx->FBAddress + info->backOffset,
+   drimemsetio((char *)ctx->FBAddress + info->backOffset,
 	  0,
 	  info->backPitch * ctx->cpp * ctx->shared.virtualHeight );
     
diff --git a/src/mesa/drivers/dri/radeon/server/radeon_dri.c b/src/mesa/drivers/dri/radeon/server/radeon_dri.c
index e4972216437..78ae30beb22 100644
--- a/src/mesa/drivers/dri/radeon/server/radeon_dri.c
+++ b/src/mesa/drivers/dri/radeon/server/radeon_dri.c
@@ -16,6 +16,7 @@
 
 #include "driver.h"
 #include "drm.h"
+#include "memops.h"
 
 #include "radeon.h"
 #include "radeon_dri.h"
@@ -981,11 +982,11 @@ static int RADEONScreenInit( DRIDriverContext *ctx, RADEONInfoPtr info )
     * the clear ioctl to do this, but would need to setup hw state
     * first.
     */
-   memset((char *)ctx->FBAddress + info->frontOffset,
+   drimemsetio((char *)ctx->FBAddress + info->frontOffset,
 	  0,
 	  info->frontPitch * ctx->cpp * ctx->shared.virtualHeight );
 
-   memset((char *)ctx->FBAddress + info->backOffset,
+   drimemsetio((char *)ctx->FBAddress + info->backOffset,
 	  0,
 	  info->backPitch * ctx->cpp * ctx->shared.virtualHeight );