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authorThomas Hellstrom <thomas-at-tungstengraphics-dot-com>2007-02-12 21:40:42 +0100
committerThomas Hellstrom <thomas-at-tungstengraphics-dot-com>2007-02-12 21:40:42 +0100
commitabc14ddfb5ad85bf2a5094597d829e6614e6c359 (patch)
treeb98b7a6b7de6a904a17cd8738b05f5fa9555e1c0 /shared-core
parent398913dc0e632c71e3095a7d50dae911aed18884 (diff)
Update flags and comments.
Diffstat (limited to 'shared-core')
-rw-r--r--shared-core/drm.h95
1 files changed, 60 insertions, 35 deletions
diff --git a/shared-core/drm.h b/shared-core/drm.h
index 71189559..479a1a65 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -694,9 +694,10 @@ typedef struct drm_fence_arg {
} drm_fence_arg_t;
/* Buffer permissions, referring to how the GPU uses the buffers.
- these translate to fence types used for the buffers.
- Typically a texture buffer is read, A destination buffer is write and
- a command (batch-) buffer is exe. Can be or-ed together. */
+ * these translate to fence types used for the buffers.
+ * Typically a texture buffer is read, A destination buffer is write and
+ * a command (batch-) buffer is exe. Can be or-ed together.
+ */
#define DRM_BO_FLAG_READ 0x00000001
#define DRM_BO_FLAG_WRITE 0x00000002
@@ -704,55 +705,82 @@ typedef struct drm_fence_arg {
/*
* Status flags. Can be read to determine the actual state of a buffer.
+ * Can also be set in the buffer mask before validation.
*/
-/*
- * Cannot evict this buffer. Not even with force. This type of buffer should
- * only be available for root, and must be manually removed before buffer
- * manager shutdown or swapout.
+/*
+ * Mask: Never evict this buffer. Not even with force. This type of buffer is only
+ * available to root and must be manually removed before buffer manager shutdown
+ * or lock.
+ * Flags: Acknowledge
*/
#define DRM_BO_FLAG_NO_EVICT 0x00000010
-/* Always keep a system memory shadow to a vram buffer */
+
+/*
+ * Mask: Require that the buffer is placed in mappable memory when validated.
+ * If not set the buffer may or may not be in mappable memory when validated.
+ * Flags: If set, the buffer is in mappable memory.
+ */
#define DRM_BO_FLAG_MAPPABLE 0x00000020
-/* The buffer is shareable with other processes */
+
+/* Mask: The buffer should be shareable with other processes.
+ * Flags: The buffer is shareable with other processes.
+ */
#define DRM_BO_FLAG_SHAREABLE 0x00000040
-/* The buffer is currently cached */
-#define DRM_BO_FLAG_CACHED 0x00000080
-/* Make sure that every time this buffer is validated, it ends up on the same
- * location. The buffer will also not be evicted when claiming space for
- * other buffers. Basically a pinned buffer but it may be thrown out as
- * part of buffer manager shutdown or swapout. Not supported yet.*/
-#define DRM_BO_FLAG_NO_MOVE 0x00000100
+/* Mask: If set, place the buffer in cache-coherent memory if available.
+ * If clear, never place the buffer in cache coherent memory if validated.
+ * Flags: The buffer is currently in cache-coherent memory.
+ */
+#define DRM_BO_FLAG_CACHED 0x00000080
-/*
- * Request flags.
+/* Mask: Make sure that every time this buffer is validated,
+ * it ends up on the same location provided that the memory mask is the same.
+ * The buffer will also not be evicted when claiming space for
+ * other buffers. Basically a pinned buffer but it may be thrown out as
+ * part of buffer manager shutdown or locking.
+ * Flags: Acknowledge.
*/
+#define DRM_BO_FLAG_NO_MOVE 0x00000100
-/* Make sure the buffer is in cached memory when mapped for reading */
+/* Mask: Make sure the buffer is in cached memory when mapped for reading.
+ * Flags: Acknowledge.
+ */
#define DRM_BO_FLAG_READ_CACHED 0x00080000
-/* Bind this buffer cached if the hardware supports it. */
+
+/* Mask: Force DRM_BO_FLAG_CACHED flag strictly also if it is set.
+ * Flags: Acknowledge.
+ */
#define DRM_BO_FLAG_FORCE_CACHING 0x00002000
+
+/*
+ * Mask: Force DRM_BO_FLAG_MAPPABLE flag strictly also if it is clear.
+ * Flags: Acknowledge.
+ */
#define DRM_BO_FLAG_FORCE_MAPPABLE 0x00004000
-/* System Memory */
+/*
+ * Memory type flags that can be or'ed together in the mask, but only
+ * one appears in flags.
+ */
+
+/* System memory */
#define DRM_BO_FLAG_MEM_LOCAL 0x01000000
/* Translation table memory */
#define DRM_BO_FLAG_MEM_TT 0x02000000
/* Vram memory */
#define DRM_BO_FLAG_MEM_VRAM 0x04000000
/* 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
+#define DRM_BO_FLAG_MEM_PRIV0 0x08000000
+#define DRM_BO_FLAG_MEM_PRIV1 0x10000000
+#define DRM_BO_FLAG_MEM_PRIV2 0x20000000
+#define DRM_BO_FLAG_MEM_PRIV3 0x40000000
+#define DRM_BO_FLAG_MEM_PRIV4 0x80000000
/* Memory flag mask */
#define DRM_BO_MASK_MEM 0xFF000000
#define DRM_BO_MASK_MEMTYPE 0xFF0000A0
-/* When creating a buffer, Avoid system storage even if allowed */
-#define DRM_BO_HINT_AVOID_LOCAL 0x00000001
/* Don't block on validate and map */
#define DRM_BO_HINT_DONT_BLOCK 0x00000002
/* Don't place this buffer on the unfenced list.*/
@@ -761,9 +789,6 @@ typedef struct drm_fence_arg {
#define DRM_BO_HINT_ALLOW_UNFENCED_MAP 0x00000010
-/* Driver specific flags. Could be for example rendering engine */
-#define DRM_BO_MASK_DRIVER 0x00F00000
-
typedef enum {
drm_bo_type_dc,
drm_bo_type_user,
@@ -831,11 +856,11 @@ 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_PRIV0 4
-#define DRM_BO_MEM_PRIV1 5
-#define DRM_BO_MEM_PRIV2 6
-#define DRM_BO_MEM_PRIV3 7
-
+#define DRM_BO_MEM_PRIV0 3
+#define DRM_BO_MEM_PRIV1 4
+#define DRM_BO_MEM_PRIV2 5
+#define DRM_BO_MEM_PRIV3 6
+#define DRM_BO_MEM_PRIV4 7
#define DRM_BO_MEM_TYPES 8 /* For now. */