Merge branches 'release', 'asus', 'sony-laptop' and 'thinkpad' into release

[linux-2.6] / arch / powerpc / platforms / ps3 / spu.c

diff --git a/arch/powerpc/platforms/ps3/spu.c b/arch/powerpc/platforms/ps3/spu.c
index ac2a4b8a4c1424270954c51b96b7e1d687140384..5ad41189b494e030e9a6e943f81bb0653cabb40f 100644 (file)
--- a/arch/powerpc/platforms/ps3/spu.c
+++ b/arch/powerpc/platforms/ps3/spu.c
@@ -28,6 +28,7 @@
 #include <asm/spu_priv1.h>
 #include <asm/lv1call.h>
 
+#include "../cell/spufs/spufs.h"
 #include "platform.h"
 
 /* spu_management_ops */
@@ -419,10 +420,34 @@ static int ps3_init_affinity(void)
        return 0;
 }
 
+/**
+ * ps3_enable_spu - Enable SPU run control.
+ *
+ * An outstanding enhancement for the PS3 would be to add a guard to check
+ * for incorrect access to the spu problem state when the spu context is
+ * disabled.  This check could be implemented with a flag added to the spu
+ * context that would inhibit mapping problem state pages, and a routine
+ * to unmap spu problem state pages.  When the spu is enabled with
+ * ps3_enable_spu() the flag would be set allowing pages to be mapped,
+ * and when the spu is disabled with ps3_disable_spu() the flag would be
+ * cleared and the mapped problem state pages would be unmapped.
+ */
+
+static void ps3_enable_spu(struct spu_context *ctx)
+{
+}
+
+static void ps3_disable_spu(struct spu_context *ctx)
+{
+       ctx->ops->runcntl_stop(ctx);
+}
+
 const struct spu_management_ops spu_management_ps3_ops = {
        .enumerate_spus = ps3_enumerate_spus,
        .create_spu = ps3_create_spu,
        .destroy_spu = ps3_destroy_spu,
+       .enable_spu = ps3_enable_spu,
+       .disable_spu = ps3_disable_spu,
        .init_affinity = ps3_init_affinity,
 };