Make sure we are locked when creating drm buffer objects.

Don't place buffer objects on unfenced list when newly created.
Fix a buffer object wait-for-idle deadlock.

4 files changed, 27 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/i915tex/intel_batchpool.c b/src/mesa/drivers/dri/i915tex/intel_batchpool.c
index 3c17c50204..2503b8a62a 100644
--- a/src/mesa/drivers/dri/i915tex/intel_batchpool.c
+++ b/src/mesa/drivers/dri/i915tex/intel_batchpool.c
@@ -96,7 +96,7 @@ createBPool(int fd, unsigned long bufSize, unsigned numBufs, unsigned flags,
    _glthread_INIT_MUTEX(p->mutex);
 
    if (drmBOCreate(fd, 0, numBufs * bufSize, 0, NULL, drm_bo_type_dc,
-                   flags, 0, &p->kernelBO)) {
+                   flags, DRM_BO_HINT_DONT_FENCE, &p->kernelBO)) {
       free(p->bufs);
       free(p);
       return NULL;
diff --git a/src/mesa/drivers/dri/i915tex/intel_buffer_objects.c b/src/mesa/drivers/dri/i915tex/intel_buffer_objects.c
index ba3c7f0c1f..91c45ad95b 100644
--- a/src/mesa/drivers/dri/i915tex/intel_buffer_objects.c
+++ b/src/mesa/drivers/dri/i915tex/intel_buffer_objects.c
@@ -76,7 +76,9 @@ intel_bufferobj_release_region(struct intel_context *intel,
     */
    driGenBuffers(intel->intelScreen->regionPool,
                  "buffer object", 1, &intel_obj->buffer, 64, 0, 0);
+   LOCK_HARDWARE(intel);
    driBOData(intel_obj->buffer, intel_obj->Base.Size, NULL, 0);
+   UNLOCK_HARDWARE(intel);
 }
 
 /* Break the COW tie to the region.  Both the pbo and the region end
@@ -137,7 +139,9 @@ intel_bufferobj_data(GLcontext * ctx,
    if (intel_obj->region)
       intel_bufferobj_release_region(intel, intel_obj);
 
+   LOCK_HARDWARE(intel);
    driBOData(intel_obj->buffer, size, data, 0);
+   UNLOCK_HARDWARE(intel);
 }
 
 
diff --git a/src/mesa/drivers/dri/i915tex/intel_regions.c b/src/mesa/drivers/dri/i915tex/intel_regions.c
index a114bdf896..7d19bd07d3 100644
--- a/src/mesa/drivers/dri/i915tex/intel_regions.c
+++ b/src/mesa/drivers/dri/i915tex/intel_regions.c
@@ -90,6 +90,7 @@ intel_region_alloc(intelScreenPrivate *intelScreen,
                    GLuint cpp, GLuint pitch, GLuint height)
 {
    struct intel_region *region = calloc(sizeof(*region), 1);
+   struct intel_context *intel = intelScreenContext(intelScreen);
 
    DBG("%s\n", __FUNCTION__);
 
@@ -107,7 +108,9 @@ intel_region_alloc(intelScreenPrivate *intelScreen,
 		 0,
 #endif
 		 0);
+   LOCK_HARDWARE(intel);
    driBOData(region->buffer, pitch * cpp * height, NULL, 0);
+   UNLOCK_HARDWARE(intel);
    return region;
 }
 
@@ -392,6 +395,8 @@ void
 intel_region_release_pbo(intelScreenPrivate *intelScreen,
                          struct intel_region *region)
 {
+   struct intel_context *intel = intelScreenContext(intelScreen);
+
    assert(region->buffer == region->pbo->buffer);
    region->pbo->region = NULL;
    region->pbo = NULL;
@@ -400,8 +405,11 @@ intel_region_release_pbo(intelScreenPrivate *intelScreen,
 
    driGenBuffers(intelScreen->regionPool,
                  "region", 1, &region->buffer, 64, 0, 0);
+   
+   LOCK_HARDWARE(intel);
    driBOData(region->buffer,
              region->cpp * region->pitch * region->height, NULL, 0);
+   UNLOCK_HARDWARE(intel);
 }
 
 /* Break the COW tie to the pbo.  Both the pbo and the region end up
diff --git a/src/mesa/drivers/dri/i915tex/intel_screen.c b/src/mesa/drivers/dri/i915tex/intel_screen.c
index 9034ee1b22..87a5aeb17c 100644
--- a/src/mesa/drivers/dri/i915tex/intel_screen.c
+++ b/src/mesa/drivers/dri/i915tex/intel_screen.c
@@ -878,9 +878,19 @@ __driCreateNewScreen_20050727(__DRInativeDisplay * dpy, int scrn,
    static const __DRIversion ddx_expected = { 1, 5, 0 };
    static const __DRIversion dri_expected = { 4, 0, 0 };
    static const __DRIversion drm_expected = { 1, 7, 0 };
+   int tmpContextID;
+   GLuint tmpContext;
 
    dri_interface = interface;
 
+   if (!(*dri_interface->createContext)(dpy, modes->screen,
+					modes->fbconfigID, 
+					&tmpContextID, &tmpContext)) {
+       fprintf(stderr, "Could not create temporary context.\n");
+       return NULL;
+   }
+   DRM_LIGHT_LOCK(fd, &((drm_sarea_t *)pSAREA)->lock, tmpContext);
+
    if (!driCheckDriDdxDrmVersions2("i915",
                                    dri_version, &dri_expected,
                                    ddx_version, &ddx_expected,
@@ -892,6 +902,10 @@ __driCreateNewScreen_20050727(__DRInativeDisplay * dpy, int scrn,
                                   ddx_version, dri_version, drm_version,
                                   frame_buffer, pSAREA, fd,
                                   internal_api_version, &intelAPI);
+
+   DRM_UNLOCK(fd, &((drm_sarea_t *)pSAREA)->lock, tmpContext);
+   (void) (*dri_interface->destroyContext)(dpy, modes->screen, tmpContextID);
+
    if (psp != NULL) {
       I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
       *driver_modes = intelFillInModes(dri_priv->cpp * 8,