diff options
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/i915_gem.c | 67 |
1 files changed, 49 insertions, 18 deletions
diff --git a/linux-core/i915_gem.c b/linux-core/i915_gem.c index 9d701ba1..90332bf0 100644 --- a/linux-core/i915_gem.c +++ b/linux-core/i915_gem.c @@ -463,9 +463,9 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) DRM_INFO("Binding object of size %d at 0x%08x\n", obj->size, obj_priv->gtt_offset); #endif - ret = i915_gem_object_get_page_list (obj); + ret = i915_gem_object_get_page_list(obj); if (ret) { - drm_memrange_put_block (obj_priv->gtt_space); + drm_memrange_put_block(obj_priv->gtt_space); obj_priv->gtt_space = NULL; return ret; } @@ -821,14 +821,43 @@ i915_dispatch_gem_execbuffer(struct drm_device *dev, return 0; } +/* + * Kludge -- wait for almost all rendering to complete + * before queuing more. This uses interrupts, so the wakeup + * occurs without any delay. + */ +static int +i915_gem_wait_space(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + drm_i915_ring_buffer_t *ring = &(dev_priv->ring); + struct drm_i915_gem_object *obj_priv, *last_priv = NULL; + int ret = 0; + + while (ring->space + 1024 < dev_priv->ring.Size && + !list_empty(&dev_priv->mm.execution_list)) { + obj_priv = list_first_entry(&dev_priv->mm.execution_list, + struct drm_i915_gem_object, + gtt_lru_entry); + if (obj_priv == last_priv) + break; + ret = i915_gem_object_wait_rendering(obj_priv->obj); + if (ret) + break; + last_priv = obj_priv; + i915_kernel_lost_context(dev); + } + return ret; +} + int i915_gem_execbuffer(struct drm_device *dev, void *data, struct drm_file *file_priv) { drm_i915_private_t *dev_priv = dev->dev_private; struct drm_i915_gem_execbuffer *args = data; - struct drm_i915_gem_exec_object *validate_list; - struct drm_gem_object **object_list; + struct drm_i915_gem_exec_object *validate_list = NULL; + struct drm_gem_object **object_list = NULL; struct drm_gem_object *batch_obj; int ret, i; uint64_t exec_offset; @@ -842,6 +871,10 @@ i915_gem_execbuffer(struct drm_device *dev, void *data, #endif i915_kernel_lost_context(dev); + ret = i915_gem_wait_space(dev); + if (ret) + return ret; + /* Copy in the validate list from userland */ validate_list = drm_calloc(sizeof(*validate_list), args->buffer_count, DRM_MEM_DRIVER); @@ -975,7 +1008,6 @@ err: for (i = 0; i < args->buffer_count; i++) drm_gem_object_unreference(object_list[i]); } - drm_free(object_list, sizeof(*object_list) * args->buffer_count, DRM_MEM_DRIVER); drm_free(validate_list, sizeof(*validate_list) * args->buffer_count, @@ -1078,22 +1110,21 @@ i915_gem_flush_pwrite(struct drm_gem_object *obj, { struct drm_device *dev = obj->dev; struct drm_i915_gem_object *obj_priv = obj->driver_private; + /* - * As far as I can tell, writes of > 64 bytes will use non-temporal - * stores which should obviate the need for this clflush. - * It doesn't work for me though... + * For writes much less than the size of the object and + * which are already pinned in memory, do the flush right now */ -/* if (size <= 64) */{ - if (obj_priv->gtt_space == NULL) { - int ret = i915_gem_object_get_page_list (obj); - if (ret) - return ret; - } - i915_gem_clflush_object(obj); - if (obj_priv->gtt_space == NULL) - i915_gem_object_free_page_list (obj); + + if ((size < obj->size >> 1) && obj_priv->page_list != NULL) { + unsigned long first_page = offset / PAGE_SIZE; + unsigned long beyond_page = roundup(offset + size, PAGE_SIZE); + + drm_ttm_cache_flush(obj_priv->page_list + first_page, + beyond_page - first_page); + drm_agp_chipset_flush(dev); + obj->write_domain = 0; } - drm_agp_chipset_flush(dev); return 0; } |