pipebuffer: use new pb_usage_flags enum type

Use a new enum type instead of 'unsigned' to make things a bit more
understandable.

Reviewed-by: Neha Bhende <bhenden@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>

11 files changed, 45 insertions, 32 deletions

diff --git a/src/gallium/auxiliary/pipebuffer/pb_buffer.h b/src/gallium/auxiliary/pipebuffer/pb_buffer.h
index 33c23068c27..11f70ead51a 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_buffer.h
+++ b/src/gallium/auxiliary/pipebuffer/pb_buffer.h
@@ -59,13 +59,22 @@ struct pb_vtbl;
 struct pb_validate;
 struct pipe_fence_handle;
 
+enum pb_usage_flags {
+   PB_USAGE_CPU_READ = (1 << 0),
+   PB_USAGE_CPU_WRITE = (1 << 1),
+   PB_USAGE_GPU_READ = (1 << 2),
+   PB_USAGE_GPU_WRITE = (1 << 3),
+   PB_USAGE_DONTBLOCK = (1 << 9),
+   PB_USAGE_UNSYNCHRONIZED = (1 << 10),
+};
 
-#define PB_USAGE_CPU_READ  (1 << 0)
-#define PB_USAGE_CPU_WRITE (1 << 1)
-#define PB_USAGE_GPU_READ  (1 << 2)
-#define PB_USAGE_GPU_WRITE (1 << 3)
-#define PB_USAGE_UNSYNCHRONIZED (1 << 10)
-#define PB_USAGE_DONTBLOCK (1 << 9)
+/* For error checking elsewhere */
+#define PB_USAGE_ALL (PB_USAGE_CPU_READ | \
+                      PB_USAGE_CPU_WRITE | \
+                      PB_USAGE_GPU_READ | \
+                      PB_USAGE_GPU_WRITE | \
+                      PB_USAGE_DONTBLOCK | \
+                      PB_USAGE_UNSYNCHRONIZED)
 
 #define PB_USAGE_CPU_READ_WRITE \
    ( PB_USAGE_CPU_READ | PB_USAGE_CPU_WRITE )
@@ -82,7 +91,7 @@ struct pipe_fence_handle;
 struct pb_desc
 {
    unsigned alignment;
-   unsigned usage;
+   enum pb_usage_flags usage;
 };
 
 
@@ -100,7 +109,7 @@ struct pb_buffer
    struct pipe_reference  reference;
    unsigned               alignment;
    pb_size                size;
-   unsigned               usage;
+   enum pb_usage_flags    usage;
 
    /**
     * Pointer to the virtual function table.
@@ -126,13 +135,13 @@ struct pb_vtbl
     * flags is bitmask of PB_USAGE_CPU_READ/WRITE. 
     */
    void *(*map)( struct pb_buffer *buf, 
-                 unsigned flags, void *flush_ctx );
+                 enum pb_usage_flags flags, void *flush_ctx );
    
    void (*unmap)( struct pb_buffer *buf );
 
    enum pipe_error (*validate)( struct pb_buffer *buf, 
                                 struct pb_validate *vl,
-                                unsigned flags );
+                                enum pb_usage_flags flags );
 
    void (*fence)( struct pb_buffer *buf, 
                   struct pipe_fence_handle *fence );
@@ -160,7 +169,7 @@ struct pb_vtbl
  */
 static inline void *
 pb_map(struct pb_buffer *buf, 
-       unsigned flags, void *flush_ctx)
+       enum pb_usage_flags flags, void *flush_ctx)
 {
    assert(buf);
    if (!buf)
@@ -201,7 +210,8 @@ pb_get_base_buffer( struct pb_buffer *buf,
 
 
 static inline enum pipe_error 
-pb_validate(struct pb_buffer *buf, struct pb_validate *vl, unsigned flags)
+pb_validate(struct pb_buffer *buf, struct pb_validate *vl,
+            enum pb_usage_flags flags)
 {
    assert(buf);
    if (!buf)
diff --git a/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c b/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
index 7421741c17c..53b9ce06379 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
@@ -139,7 +139,7 @@ struct fenced_buffer
     * A bitmask of PB_USAGE_CPU/GPU_READ/WRITE describing the current
     * buffer usage.
     */
-   unsigned flags;
+   enum pb_usage_flags flags;
 
    unsigned mapcount;
 
@@ -662,7 +662,7 @@ fenced_buffer_destroy(struct pb_buffer *buf)
 
 static void *
 fenced_buffer_map(struct pb_buffer *buf,
-                  unsigned flags, void *flush_ctx)
+                  enum pb_usage_flags flags, void *flush_ctx)
 {
    struct fenced_buffer *fenced_buf = fenced_buffer(buf);
    struct fenced_manager *fenced_mgr = fenced_buf->mgr;
@@ -739,7 +739,7 @@ fenced_buffer_unmap(struct pb_buffer *buf)
 static enum pipe_error
 fenced_buffer_validate(struct pb_buffer *buf,
                        struct pb_validate *vl,
-                       unsigned flags)
+                       enum pb_usage_flags flags)
 {
    struct fenced_buffer *fenced_buf = fenced_buffer(buf);
    struct fenced_manager *fenced_mgr = fenced_buf->mgr;
diff --git a/src/gallium/auxiliary/pipebuffer/pb_buffer_malloc.c b/src/gallium/auxiliary/pipebuffer/pb_buffer_malloc.c
index ea2f2fa107c..d83e8e4f180 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_buffer_malloc.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_buffer_malloc.c
@@ -70,7 +70,7 @@ malloc_buffer_destroy(struct pb_buffer *buf)
 
 static void *
 malloc_buffer_map(struct pb_buffer *buf, 
-                  unsigned flags,
+                  enum pb_usage_flags flags,
 		  void *flush_ctx)
 {
    return malloc_buffer(buf)->data;
@@ -87,7 +87,7 @@ malloc_buffer_unmap(struct pb_buffer *buf)
 static enum pipe_error 
 malloc_buffer_validate(struct pb_buffer *buf, 
                        struct pb_validate *vl,
-                       unsigned flags)
+                       enum pb_usage_flags flags)
 {
    assert(0);
    return PIPE_ERROR;
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c
index 4e70048cd83..ceed1daa414 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c
@@ -122,7 +122,7 @@ pb_cache_buffer_destroy(struct pb_buffer *_buf)
 
 static void *
 pb_cache_buffer_map(struct pb_buffer *_buf, 
-		    unsigned flags, void *flush_ctx)
+		    enum pb_usage_flags flags, void *flush_ctx)
 {
    struct pb_cache_buffer *buf = pb_cache_buffer(_buf);   
    return pb_map(buf->buffer, flags, flush_ctx);
@@ -140,7 +140,7 @@ pb_cache_buffer_unmap(struct pb_buffer *_buf)
 static enum pipe_error 
 pb_cache_buffer_validate(struct pb_buffer *_buf, 
                          struct pb_validate *vl,
-                         unsigned flags)
+                         enum pb_usage_flags flags)
 {
    struct pb_cache_buffer *buf = pb_cache_buffer(_buf);
    return pb_validate(buf->buffer, vl, flags);
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_debug.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_debug.c
index 3c83de80375..7101fdc269b 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_debug.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_debug.c
@@ -248,7 +248,7 @@ pb_debug_buffer_destroy(struct pb_buffer *_buf)
 
 static void *
 pb_debug_buffer_map(struct pb_buffer *_buf, 
-                    unsigned flags, void *flush_ctx)
+                    enum pb_usage_flags flags, void *flush_ctx)
 {
    struct pb_debug_buffer *buf = pb_debug_buffer(_buf);
    void *map;
@@ -299,10 +299,12 @@ pb_debug_buffer_get_base_buffer(struct pb_buffer *_buf,
 static enum pipe_error 
 pb_debug_buffer_validate(struct pb_buffer *_buf, 
                          struct pb_validate *vl,
-                         unsigned flags)
+                         enum pb_usage_flags flags)
 {
    struct pb_debug_buffer *buf = pb_debug_buffer(_buf);
    
+   assert((flags & ~PB_ALL_USAGE_FLAGS) == 0);
+
    mtx_lock(&buf->mutex);
    if(buf->map_count) {
       debug_printf("%s: attempting to validate a mapped buffer\n", __FUNCTION__);
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c
index 818cadd80a4..f975cfbfe93 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c
@@ -108,7 +108,7 @@ mm_buffer_destroy(struct pb_buffer *buf)
 
 static void *
 mm_buffer_map(struct pb_buffer *buf,
-              unsigned flags,
+              enum pb_usage_flags flags,
               void *flush_ctx)
 {
    struct mm_buffer *mm_buf = mm_buffer(buf);
@@ -130,7 +130,7 @@ mm_buffer_unmap(struct pb_buffer *buf)
 static enum pipe_error 
 mm_buffer_validate(struct pb_buffer *buf, 
                    struct pb_validate *vl,
-                   unsigned flags)
+                   enum pb_usage_flags flags)
 {
    struct mm_buffer *mm_buf = mm_buffer(buf);
    struct mm_pb_manager *mm = mm_buf->mgr;
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_ondemand.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_ondemand.c
index 4885d68c398..967d8358f0c 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_ondemand.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_ondemand.c
@@ -103,7 +103,7 @@ pb_ondemand_buffer_destroy(struct pb_buffer *_buf)
 
 static void *
 pb_ondemand_buffer_map(struct pb_buffer *_buf, 
-                       unsigned flags, void *flush_ctx)
+                       enum pb_usage_flags flags, void *flush_ctx)
 {
    struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
 
@@ -172,7 +172,7 @@ pb_ondemand_buffer_instantiate(struct pb_ondemand_buffer *buf)
 static enum pipe_error 
 pb_ondemand_buffer_validate(struct pb_buffer *_buf, 
                             struct pb_validate *vl,
-                            unsigned flags)
+                            enum pb_usage_flags flags)
 {
    struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
    enum pipe_error ret; 
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c
index 89df2e947bc..f356ecfd568 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c
@@ -118,7 +118,8 @@ pool_buffer_destroy(struct pb_buffer *buf)
 
 
 static void *
-pool_buffer_map(struct pb_buffer *buf, unsigned flags, void *flush_ctx)
+pool_buffer_map(struct pb_buffer *buf, enum pb_usage_flags flags,
+                void *flush_ctx)
 {
    struct pool_buffer *pool_buf = pool_buffer(buf);
    struct pool_pb_manager *pool = pool_buf->mgr;
@@ -143,7 +144,7 @@ pool_buffer_unmap(struct pb_buffer *buf)
 static enum pipe_error 
 pool_buffer_validate(struct pb_buffer *buf, 
                      struct pb_validate *vl,
-                     unsigned flags)
+                     enum pb_usage_flags flags)
 {
    struct pool_buffer *pool_buf = pool_buffer(buf);
    struct pool_pb_manager *pool = pool_buf->mgr;
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c
index 5cf707164ff..8a3b2876149 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c
@@ -226,7 +226,7 @@ pb_slab_buffer_destroy(struct pb_buffer *_buf)
 
 static void *
 pb_slab_buffer_map(struct pb_buffer *_buf, 
-                   unsigned flags,
+                   enum pb_usage_flags flags,
                    void *flush_ctx)
 {
    struct pb_slab_buffer *buf = pb_slab_buffer(_buf);
@@ -252,7 +252,7 @@ pb_slab_buffer_unmap(struct pb_buffer *_buf)
 static enum pipe_error 
 pb_slab_buffer_validate(struct pb_buffer *_buf, 
                          struct pb_validate *vl,
-                         unsigned flags)
+                         enum pb_usage_flags flags)
 {
    struct pb_slab_buffer *buf = pb_slab_buffer(_buf);
    return pb_validate(buf->slab->bo, vl, flags);
@@ -486,7 +486,7 @@ pb_slab_range_manager_create_buffer(struct pb_manager *_mgr,
    struct pb_slab_range_manager *mgr = pb_slab_range_manager(_mgr);
    pb_size bufSize;
    pb_size reqSize = size;
-   unsigned i;
+   enum pb_usage_flags i;
 
    if(desc->alignment > reqSize)
 	   reqSize = desc->alignment;
diff --git a/src/gallium/auxiliary/pipebuffer/pb_validate.c b/src/gallium/auxiliary/pipebuffer/pb_validate.c
index 8489842effd..0c61c906a3a 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_validate.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_validate.c
@@ -63,7 +63,7 @@ struct pb_validate
 enum pipe_error
 pb_validate_add_buffer(struct pb_validate *vl,
                        struct pb_buffer *buf,
-                       unsigned flags)
+                       enum pb_usage_flags flags)
 {
    assert(buf);
    if (!buf)
diff --git a/src/gallium/auxiliary/pipebuffer/pb_validate.h b/src/gallium/auxiliary/pipebuffer/pb_validate.h
index fa788b08a2e..ea364330eff 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_validate.h
+++ b/src/gallium/auxiliary/pipebuffer/pb_validate.h
@@ -59,7 +59,7 @@ struct pb_validate;
 enum pipe_error
 pb_validate_add_buffer(struct pb_validate *vl,
                        struct pb_buffer *buf,
-                       unsigned flags);
+                       enum pb_usage_flags flags);
 
 enum pipe_error
 pb_validate_foreach(struct pb_validate *vl,