diff options
| -rw-r--r-- | linux-core/drm_agpsupport.c | 8 | ||||
| -rw-r--r-- | linux-core/drm_bo.c | 18 | ||||
| -rw-r--r-- | linux-core/drm_ttm.c | 2 | ||||
| -rw-r--r-- | shared-core/drm.h | 10 |
4 files changed, 22 insertions, 16 deletions
diff --git a/linux-core/drm_agpsupport.c b/linux-core/drm_agpsupport.c index 8c7f570e..7c50f411 100644 --- a/linux-core/drm_agpsupport.c +++ b/linux-core/drm_agpsupport.c @@ -541,11 +541,15 @@ static int drm_agp_bind_ttm(struct drm_ttm_backend *backend, container_of(backend, struct drm_agp_ttm_backend, backend); DRM_AGP_MEM *mem = agp_be->mem; int ret; + int snooped = (bo_mem->flags & DRM_BO_FLAG_CACHED) && !(bo_mem->flags & DRM_BO_FLAG_CACHED_MAPPED); DRM_DEBUG("drm_agp_bind_ttm\n"); mem->is_flushed = TRUE; - mem->type = (bo_mem->flags & DRM_BO_FLAG_CACHED) ? AGP_USER_CACHED_MEMORY : - AGP_USER_MEMORY; + mem->type = AGP_USER_MEMORY; + /* CACHED MAPPED implies not snooped memory */ + if (snooped) + mem->type = AGP_USER_CACHED_MEMORY; + ret = drm_agp_bind_memory(mem, bo_mem->mm_node->start); if (ret) { DRM_ERROR("AGP Bind memory failed\n"); diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c index 16203c77..dc96e8aa 100644 --- a/linux-core/drm_bo.c +++ b/linux-core/drm_bo.c @@ -806,6 +806,9 @@ static int drm_bo_mt_compatible(struct drm_mem_type_manager * man, } flag_diff = (mask ^ cur_flags); + if (flag_diff & DRM_BO_FLAG_CACHED_MAPPED) + cur_flags |= DRM_BO_FLAG_CACHED_MAPPED; + if ((flag_diff & DRM_BO_FLAG_CACHED) && (!(mask & DRM_BO_FLAG_CACHED) || (mask & DRM_BO_FLAG_FORCE_CACHING))) @@ -1029,7 +1032,7 @@ static int drm_bo_busy(struct drm_buffer_object * bo) return 0; } -static int drm_bo_read_cached(struct drm_buffer_object * bo) +static int drm_bo_evict_cached(struct drm_buffer_object * bo) { int ret = 0; @@ -1177,15 +1180,11 @@ static int drm_buffer_object_map(struct drm_file *file_priv, uint32_t handle, goto out; } - if ((map_flags & DRM_BO_FLAG_READ) && - (bo->mem.flags & DRM_BO_FLAG_READ_CACHED) && - (!(bo->mem.flags & DRM_BO_FLAG_CACHED))) { - drm_bo_read_cached(bo); - } + if (bo->mem.flags & DRM_BO_FLAG_CACHED_MAPPED) + drm_bo_evict_cached(bo); + break; - } else if ((map_flags & DRM_BO_FLAG_READ) && - (bo->mem.flags & DRM_BO_FLAG_READ_CACHED) && - (!(bo->mem.flags & DRM_BO_FLAG_CACHED))) { + } else if (bo->mem.flags & DRM_BO_FLAG_CACHED_MAPPED) { /* * We are already mapped with different flags. @@ -1666,7 +1665,6 @@ int drm_buffer_object_create(struct drm_device *dev, DRM_BO_FLAG_MAPPABLE; atomic_inc(&bm->count); ret = drm_bo_new_mask(bo, mask, hint); - if (ret) goto out_err; diff --git a/linux-core/drm_ttm.c b/linux-core/drm_ttm.c index df9e7e44..fd03f6e8 100644 --- a/linux-core/drm_ttm.c +++ b/linux-core/drm_ttm.c @@ -329,7 +329,7 @@ int drm_bind_ttm(struct drm_ttm * ttm, struct drm_bo_mem_reg *bo_mem) if (ttm->state == ttm_unbound && !(bo_mem->flags & DRM_BO_FLAG_CACHED)) { drm_set_caching(ttm, DRM_TTM_PAGE_UNCACHED); - } else if ((bo_mem->flags & DRM_BO_FLAG_CACHED) && + } else if ((bo_mem->flags & DRM_BO_FLAG_CACHED_MAPPED) && bo_driver->ttm_cache_flush) bo_driver->ttm_cache_flush(ttm); diff --git a/shared-core/drm.h b/shared-core/drm.h index 3a102735..4059a6fb 100644 --- a/shared-core/drm.h +++ b/shared-core/drm.h @@ -700,10 +700,14 @@ struct drm_fence_arg { */ #define DRM_BO_FLAG_NO_MOVE (1ULL << 8) -/* Mask: Make sure the buffer is in cached memory when mapped for reading. +/* Mask: Make sure the buffer is in cached memory when mapped * Flags: Acknowledge. + * Buffers allocated with this flag should not be used for suballocators + * This type may have issues on CPUs with over-aggressive caching + * http://marc.info/?l=linux-kernel&m=102376926732464&w=2 */ -#define DRM_BO_FLAG_READ_CACHED (1ULL << 19) +#define DRM_BO_FLAG_CACHED_MAPPED (1ULL << 19) + /* Mask: Force DRM_BO_FLAG_CACHED flag strictly also if it is set. * Flags: Acknowledge. @@ -738,7 +742,7 @@ struct drm_fence_arg { /* Memory flag mask */ #define DRM_BO_MASK_MEM 0x00000000FF000000ULL -#define DRM_BO_MASK_MEMTYPE 0x00000000FF0000A0ULL +#define DRM_BO_MASK_MEMTYPE 0x00000000FF0800A0ULL /* Driver-private flags */ #define DRM_BO_MASK_DRIVER 0xFFFF000000000000ULL |