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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_prime.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_prime.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
new file mode 100644
index 0000000..f53e108
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2011 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Dave Airlie
+ */
+
+#include <drm/drmP.h>
+
+#include "nouveau_drm.h"
+#include "nouveau_gem.h"
+
+struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj)
+{
+ struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+ int npages = nvbo->bo.num_pages;
+
+ return drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages);
+}
+
+void *nouveau_gem_prime_vmap(struct drm_gem_object *obj)
+{
+ struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+ int ret;
+
+ ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.num_pages,
+ &nvbo->dma_buf_vmap);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return nvbo->dma_buf_vmap.virtual;
+}
+
+void nouveau_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
+{
+ struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+
+ ttm_bo_kunmap(&nvbo->dma_buf_vmap);
+}
+
+struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
+ size_t size,
+ struct sg_table *sg)
+{
+ struct nouveau_bo *nvbo;
+ u32 flags = 0;
+ int ret;
+
+ flags = TTM_PL_FLAG_TT;
+
+ ret = nouveau_bo_new(dev, size, 0, flags, 0, 0,
+ sg, &nvbo);
+ if (ret)
+ return ERR_PTR(ret);
+
+ nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
+ nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
+ if (!nvbo->gem) {
+ nouveau_bo_ref(NULL, &nvbo);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ nvbo->gem->driver_private = nvbo;
+ return nvbo->gem;
+}
+
+int nouveau_gem_prime_pin(struct drm_gem_object *obj)
+{
+ struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+ int ret = 0;
+
+ /* pin buffer into GTT */
+ ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_TT);
+ if (ret)
+ return -EINVAL;
+
+ return 0;
+}