1 files changed, 148 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/intel/gem/intel_drm_buffer.c b/src/gallium/winsys/drm/intel/gem/intel_drm_buffer.c
new file mode 100644
index 0000000000..0030f915a3
--- /dev/null
+++ b/src/gallium/winsys/drm/intel/gem/intel_drm_buffer.c
@@ -0,0 +1,148 @@
+
+#include "intel_drm_winsys.h"
+#include "util/u_memory.h"
+
+#include "i915_drm.h"
+
+static struct intel_buffer *
+intel_drm_buffer_create(struct intel_winsys *iws,
+                        unsigned size, unsigned alignment,
+                        enum intel_buffer_type type)
+{
+   struct intel_drm_buffer *buf = CALLOC_STRUCT(intel_drm_buffer);
+   struct intel_drm_winsys *idws = intel_drm_winsys(iws);
+   drm_intel_bufmgr *pool;
+   char *name;
+
+   if (!buf)
+      return NULL;
+
+   buf->magic = 0xDEAD1337;
+   buf->flinked = FALSE;
+   buf->flink = 0;
+   buf->map_gtt = FALSE;
+
+   if (type == INTEL_NEW_TEXTURE) {
+      name = "gallium3d_texture";
+      pool = idws->pools.gem;
+   } else if (type == INTEL_NEW_VERTEX) {
+      name = "gallium3d_vertex";
+      pool = idws->pools.gem;
+      buf->map_gtt = TRUE;
+   } else if (type == INTEL_NEW_SCANOUT) {
+      name = "gallium3d_scanout";
+      pool = idws->pools.gem;
+      buf->map_gtt = TRUE;
+   } else {
+      assert(0);
+      name = "gallium3d_unknown";
+      pool = idws->pools.gem;
+   }
+
+   buf->bo = drm_intel_bo_alloc(pool, name, size, alignment);
+
+   if (!buf->bo)
+      goto err;
+
+   return (struct intel_buffer *)buf;
+
+err:
+   assert(0);
+   FREE(buf);
+   return NULL;
+}
+
+static int
+intel_drm_buffer_set_fence_reg(struct intel_winsys *iws,
+                               struct intel_buffer *buffer,
+                               unsigned stride,
+                               enum intel_buffer_tile tile)
+{
+   assert(I915_TILING_NONE == INTEL_TILE_NONE);
+   assert(I915_TILING_X == INTEL_TILE_X);
+   assert(I915_TILING_Y == INTEL_TILE_Y);
+
+   return drm_intel_bo_set_tiling(intel_bo(buffer), &tile, stride);
+}
+
+static void *
+intel_drm_buffer_map(struct intel_winsys *iws,
+                     struct intel_buffer *buffer,
+                     boolean write)
+{
+   struct intel_drm_buffer *buf = intel_drm_buffer(buffer);
+   drm_intel_bo *bo = intel_bo(buffer);
+   int ret = 0;
+
+   assert(bo);
+
+   if (buf->map_count)
+      goto out;
+
+   if (buf->map_gtt)
+      ret = drm_intel_gem_bo_map_gtt(bo);
+   else
+      ret = drm_intel_bo_map(bo, write);
+
+   buf->ptr = bo->virtual;
+
+   assert(ret == 0);
+out:
+   if (ret)
+      return NULL;
+
+   buf->map_count++;
+   return buf->ptr;
+}
+
+static void
+intel_drm_buffer_unmap(struct intel_winsys *iws,
+                       struct intel_buffer *buffer)
+{
+   struct intel_drm_buffer *buf = intel_drm_buffer(buffer);
+
+   if (--buf->map_count)
+      return;
+
+   if (buf->map_gtt)
+      drm_intel_gem_bo_unmap_gtt(intel_bo(buffer));
+   else
+      drm_intel_bo_unmap(intel_bo(buffer));
+}
+
+static int
+intel_drm_buffer_write(struct intel_winsys *iws,
+                       struct intel_buffer *buffer,
+                       const void *data,
+                       size_t size,
+                       size_t offset)
+{
+   struct intel_drm_buffer *buf = intel_drm_buffer(buffer);
+
+   return drm_intel_bo_subdata(buf->bo, offset, size, (void*)data);
+}
+
+static void
+intel_drm_buffer_destroy(struct intel_winsys *iws,
+                         struct intel_buffer *buffer)
+{
+   drm_intel_bo_unreference(intel_bo(buffer));
+
+#ifdef DEBUG
+   intel_drm_buffer(buffer)->magic = 0;
+   intel_drm_buffer(buffer)->bo = NULL;
+#endif
+
+   FREE(buffer);
+}
+
+void
+intel_drm_winsys_init_buffer_functions(struct intel_drm_winsys *idws)
+{
+   idws->base.buffer_create = intel_drm_buffer_create;
+   idws->base.buffer_set_fence_reg = intel_drm_buffer_set_fence_reg;
+   idws->base.buffer_map = intel_drm_buffer_map;
+   idws->base.buffer_unmap = intel_drm_buffer_unmap;
+   idws->base.buffer_write = intel_drm_buffer_write;
+   idws->base.buffer_destroy = intel_drm_buffer_destroy;
+}