Fix up buffer object and region refcounting

Sinlence some compilation warnings.

src/mesa/drivers/dri/common/dri_bufmgr.c

@@ -122,12 +122,13 @@ driFenceType(DriFenceObject * fence)
 }
 
 
-void
+DriFenceObject *
 driFenceReference(DriFenceObject * fence)
 {
    _glthread_LOCK_MUTEX(bmMutex);
    ++fence->refCount;
    _glthread_UNLOCK_MUTEX(bmMutex);
+   return fence;
 }
 
 void
@@ -243,7 +244,7 @@ driBOFlags(struct _DriBufferObject *buf)
    return ret;
 }
 
-void
+struct _DriBufferObject *
 driBOReference(struct _DriBufferObject *buf)
 {
    _glthread_LOCK_MUTEX(bmMutex);
@@ -251,6 +252,7 @@ driBOReference(struct _DriBufferObject *buf)
       BM_CKFATAL(-EINVAL);
    }
    _glthread_UNLOCK_MUTEX(bmMutex);
+   return buf;
 }
 
 void

src/mesa/drivers/dri/common/dri_bufmgr.h

@@ -42,7 +42,7 @@ struct _DriBufferPool;
 extern struct _DriFenceObject *driFenceBuffers(int fd, char *name,
                                                unsigned flags);
 
-extern void driFenceReference(struct _DriFenceObject *fence);
+extern struct _DriFenceObject *driFenceReference(struct _DriFenceObject *fence);
 
 extern void driFenceUnReference(struct _DriFenceObject *fence);
 
@@ -63,7 +63,7 @@ extern void *driBOMap(struct _DriBufferObject *buf, unsigned flags,
 extern void driBOUnmap(struct _DriBufferObject *buf);
 extern unsigned long driBOOffset(struct _DriBufferObject *buf);
 extern unsigned driBOFlags(struct _DriBufferObject *buf);
-extern void driBOReference(struct _DriBufferObject *buf);
+extern struct _DriBufferObject *driBOReference(struct _DriBufferObject *buf);
 extern void driBOUnReference(struct _DriBufferObject *buf);
 extern void driBOData(struct _DriBufferObject *r_buf,
                       unsigned size, const void *data, unsigned flags);
@@ -94,6 +94,6 @@ extern void driBOSetStatic(struct _DriBufferObject *buf,
                            unsigned long offset,
                            unsigned long size, void *virtual, unsigned flags);
 extern void driBOWaitIdle(struct _DriBufferObject *buf, int lazy);
-
+extern void driPoolTakeDown(struct _DriBufferPool *pool);
 
 #endif

src/mesa/drivers/dri/i915/i915_texstate.c

@@ -28,6 +28,7 @@
 #include "mtypes.h"
 #include "enums.h"
 #include "texformat.h"
+#include "dri_bufmgr.h"
 
 #include "intel_mipmap_tree.h"
 #include "intel_tex.h"
@@ -140,9 +141,7 @@ i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
     */
    firstImage = tObj->Image[0][intelObj->firstLevel];
 
-
-   driBOReference(intelObj->mt->region->buffer);
-   i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
+   i915->state.tex_buffer[unit] = driBOReference(intelObj->mt->region->buffer);
    i915->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt, 0,
                                                              intelObj->
                                                              firstLevel);

src/mesa/drivers/dri/i915/intel_batchpool.c

@@ -36,6 +36,7 @@
 #include "glthread.h"
 #include "dri_bufpool.h"
 #include "dri_bufmgr.h"
+#include "intel_screen.h"
 
 typedef struct
 {

src/mesa/drivers/dri/i915/intel_blit.c

@@ -40,6 +40,7 @@
 #include "intel_fbo.h"
 #include "intel_reg.h"
 #include "intel_regions.h"
+#include "vblank.h"
 
 #define FILE_DEBUG_FLAG DEBUG_BLIT
 

src/mesa/drivers/dri/i915/intel_buffer_objects.c

@@ -65,7 +65,8 @@ intel_bufferobj_release_region(struct intel_context *intel,
    assert(intel_obj->region->buffer == intel_obj->buffer);
    intel_obj->region->pbo = NULL;
    intel_obj->region = NULL;
-   intel_obj->buffer = NULL;    /* refcount? */
+   driBOUnReference(intel_obj->buffer);
+   intel_obj->buffer = NULL;
 
    /* This leads to a large number of buffer deletion/creation events.
     * Currently the drm doesn't like that:

src/mesa/drivers/dri/i915/intel_regions.c

@@ -98,7 +98,6 @@ intel_region_alloc(intelScreenPrivate *intelScreen,
    driGenBuffers(intelScreen->regionPool,
                  "region", 1, &region->buffer, 64, 0, 0);
    driBOData(region->buffer, pitch * cpp * height, NULL, 0);
-
    return region;
 }
 
@@ -129,8 +128,8 @@ intel_region_release(intelScreenPrivate *intelScreen,
 
       if ((*region)->pbo)
          intel_region_release_pbo(intelScreen, *region);
-      else
-         driDeleteBuffers(1, &(*region)->buffer);
+      
+      driDeleteBuffers(1, &(*region)->buffer);
 
       free(*region);
    }
@@ -364,17 +363,16 @@ intel_region_attach_pbo(intelScreenPrivate *intelScreen,
    if (region->pbo) {
       region->pbo->region = NULL;
       region->pbo = NULL;
-      region->buffer = NULL;    /* refcount? */
    }
 
    if (region->buffer) {
       driDeleteBuffers(1, &region->buffer);
+      region->buffer = NULL;
    }
 
    region->pbo = pbo;
    region->pbo->region = region;
-   region->buffer = pbo->buffer;        /* refcount? */
-
+   region->buffer = driBOReference(pbo->buffer);
 }
 
 
@@ -387,7 +385,8 @@ intel_region_release_pbo(intelScreenPrivate *intelScreen,
    assert(region->buffer == region->pbo->buffer);
    region->pbo->region = NULL;
    region->pbo = NULL;
-   region->buffer = NULL;       /* refcount? */
+   driBOUnReference(region->buffer);
+   region->buffer = NULL;
 
    driGenBuffers(intelScreen->regionPool,
                  "region", 1, &region->buffer, 64, 0, 0);