memory manager: Make device driver aware of different memory types.

Memory types are either fixed (on-card or pre-bound AGP) or not fixed
(dynamically bound) to an aperture. They also carry information about:

1) Whether they can be mapped cached.
2) Whether they are at all mappable.
3) Whether they need an ioremap to be accessible from kernel space.

In this way VRAM memory and, for example, pre-bound AGP appear
identical to the memory manager.

This also makes support for unmappable VRAM simple to implement.

1 files changed, 13 insertions, 4 deletions

diff --git a/shared-core/drm.h b/shared-core/drm.h
index 9efb1dc4..38cca882 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -738,8 +738,12 @@ typedef struct drm_fence_arg {
 #define DRM_BO_FLAG_MEM_TT     0x02000000
 /* Vram memory */
 #define DRM_BO_FLAG_MEM_VRAM   0x04000000
-/* Unmappable Vram memory */
-#define DRM_BO_FLAG_MEM_VRAM_NM   0x08000000
+/* Up to the driver to define. */
+#define DRM_BO_FLAG_MEM_PRIV0  0x10000000
+#define DRM_BO_FLAG_MEM_PRIV1  0x20000000
+#define DRM_BO_FLAG_MEM_PRIV2  0x40000000
+#define DRM_BO_FLAG_MEM_PRIV3  0x80000000
+
 /* Memory flag mask */
 #define DRM_BO_MASK_MEM         0xFF000000
 
@@ -823,8 +827,13 @@ typedef struct drm_bo_arg{
 #define DRM_BO_MEM_LOCAL 0
 #define DRM_BO_MEM_TT 1
 #define DRM_BO_MEM_VRAM 2
-#define DRM_BO_MEM_VRAM_NM 3
-#define DRM_BO_MEM_TYPES 2 /* For now. */
+#define DRM_BO_MEM_PRIV0 4
+#define DRM_BO_MEM_PRIV1 5
+#define DRM_BO_MEM_PRIV2 6
+#define DRM_BO_MEM_PRIV3 7
+
+
+#define DRM_BO_MEM_TYPES 8 /* For now. */
 
 typedef union drm_mm_init_arg{
 	struct {