intel: Remove the old swrast flag for reducing cache flushing.

It hasn't been doing anything effective since
52e5d24fae4af6f2f4a5304a516c8c5ab347a11b, and we pretty much don't bo_map
pinned buffers any more anyway.

diff --git a/libdrm/intel/intel_bufmgr_gem.c b/libdrm/intel/intel_bufmgr_gem.c
index baa0ee6..84836a8 100644 (file)
--- a/libdrm/intel/intel_bufmgr_gem.c
+++ b/libdrm/intel/intel_bufmgr_gem.c
@@ -127,13 +127,6 @@ struct _drm_intel_bo_gem {
     int validate_index;
 
     /**
-     * Boolean whether we've started swrast
-     * Set when the buffer has been mapped
-     * Cleared when the buffer is unmapped
-     */
-    int swrast;
-
-    /**
      * Current tiling mode
      */
     uint32_t tiling_mode;
@@ -663,30 +656,26 @@ drm_intel_gem_bo_map(drm_intel_bo *bo, int write_enable)
            return ret;
        }
        bo_gem->mem_virtual = (void *)(uintptr_t)mmap_arg.addr_ptr;
-       bo_gem->swrast = 0;
     }
     DBG("bo_map: %d (%s) -> %p\n", bo_gem->gem_handle, bo_gem->name,
        bo_gem->mem_virtual);
     bo->virtual = bo_gem->mem_virtual;
 
-    if (bo_gem->global_name != 0 || !bo_gem->swrast) {
-       set_domain.handle = bo_gem->gem_handle;
-       set_domain.read_domains = I915_GEM_DOMAIN_CPU;
-       if (write_enable)
-           set_domain.write_domain = I915_GEM_DOMAIN_CPU;
-       else
-           set_domain.write_domain = 0;
-       do {
-           ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN,
-                       &set_domain);
-       } while (ret == -1 && errno == EINTR);
-       if (ret != 0) {
-           fprintf (stderr, "%s:%d: Error setting swrast %d: %s\n",
-                    __FILE__, __LINE__, bo_gem->gem_handle, strerror (errno));
-           pthread_mutex_unlock(&bufmgr_gem->lock);
-           return ret;
-       }
-       bo_gem->swrast = 1;
+    set_domain.handle = bo_gem->gem_handle;
+    set_domain.read_domains = I915_GEM_DOMAIN_CPU;
+    if (write_enable)
+       set_domain.write_domain = I915_GEM_DOMAIN_CPU;
+    else
+       set_domain.write_domain = 0;
+    do {
+       ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN,
+                   &set_domain);
+    } while (ret == -1 && errno == EINTR);
+    if (ret != 0) {
+       fprintf (stderr, "%s:%d: Error setting to CPU domain %d: %s\n",
+                __FILE__, __LINE__, bo_gem->gem_handle, strerror (errno));
+       pthread_mutex_unlock(&bufmgr_gem->lock);
+       return ret;
     }
 
     pthread_mutex_unlock(&bufmgr_gem->lock);
@@ -797,14 +786,16 @@ drm_intel_gem_bo_unmap(drm_intel_bo *bo)
     assert(bo_gem->mem_virtual != NULL);
 
     pthread_mutex_lock(&bufmgr_gem->lock);
-    if (bo_gem->swrast) {
-       sw_finish.handle = bo_gem->gem_handle;
-       do {
-           ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SW_FINISH,
-                       &sw_finish);
-       } while (ret == -1 && errno == EINTR);
-       bo_gem->swrast = 0;
-    }
+
+    /* Cause a flush to happen if the buffer's pinned for scanout, so the
+     * results show up in a timely manner.
+     */
+    sw_finish.handle = bo_gem->gem_handle;
+    do {
+       ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SW_FINISH,
+                   &sw_finish);
+    } while (ret == -1 && errno == EINTR);
+
     bo->virtual = NULL;
     pthread_mutex_unlock(&bufmgr_gem->lock);
     return 0;
@@ -1100,9 +1091,6 @@ drm_intel_gem_bo_exec(drm_intel_bo *bo, int used,
        drm_intel_bo *bo = bufmgr_gem->exec_bos[i];
        drm_intel_bo_gem *bo_gem = (drm_intel_bo_gem *)bo;
 
-       /* Need to call swrast on next bo_map */
-       bo_gem->swrast = 0;
-
        /* Disconnect the buffer from the validate list */
        bo_gem->validate_index = -1;
        drm_intel_gem_bo_unreference_locked(bo);