panfrost/nondrm: Flag CPU-invisible regions

Potentially, the kernel could optimize these allocations, or perhaps we
can save on mapping costs.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>

diff --git a/src/gallium/drivers/panfrost/pan_context.c b/src/gallium/drivers/panfrost/pan_context.c
index 2996a9c..1bfdc66 100644 (file)
--- a/src/gallium/drivers/panfrost/pan_context.c
+++ b/src/gallium/drivers/panfrost/pan_context.c
@@ -2727,10 +2727,10 @@ panfrost_setup_hardware(struct panfrost_context *ctx)
         }
 
         screen->driver->allocate_slab(screen, &ctx->scratchpad, 64, false, 0, 0, 0);
-        screen->driver->allocate_slab(screen, &ctx->varying_mem, 16384, false, 0, 0, 0);
+        screen->driver->allocate_slab(screen, &ctx->varying_mem, 16384, false, PAN_ALLOCATE_INVISIBLE, 0, 0);
         screen->driver->allocate_slab(screen, &ctx->shaders, 4096, true, PAN_ALLOCATE_EXECUTE, 0, 0);
-        screen->driver->allocate_slab(screen, &ctx->tiler_heap, 32768, false, PAN_ALLOCATE_GROWABLE, 1, 128);
-        screen->driver->allocate_slab(screen, &ctx->misc_0, 128*128, false, PAN_ALLOCATE_GROWABLE, 1, 128);
+        screen->driver->allocate_slab(screen, &ctx->tiler_heap, 32768, false, PAN_ALLOCATE_INVISIBLE | PAN_ALLOCATE_GROWABLE, 1, 128);
+        screen->driver->allocate_slab(screen, &ctx->misc_0, 128*128, false, PAN_ALLOCATE_INVISIBLE | PAN_ALLOCATE_GROWABLE, 1, 128);
 
 }
 

diff --git a/src/gallium/drivers/panfrost/pan_screen.h b/src/gallium/drivers/panfrost/pan_screen.h
index 4ff690d..3d7c1ad 100644 (file)
--- a/src/gallium/drivers/panfrost/pan_screen.h
+++ b/src/gallium/drivers/panfrost/pan_screen.h
@@ -46,6 +46,7 @@ struct panfrost_screen;
 /* Flags for allocated memory */
 #define PAN_ALLOCATE_EXECUTE (1 << 0)
 #define PAN_ALLOCATE_GROWABLE (1 << 1)
+#define PAN_ALLOCATE_INVISIBLE (1 << 2)
 
 struct panfrost_driver {
        struct panfrost_bo * (*import_bo) (struct panfrost_screen *screen, struct winsys_handle *whandle);