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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_prime.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_prime.c115
1 files changed, 115 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 000000000..1b2ff0c40
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
@@ -0,0 +1,115 @@
+/*
+ * 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 <linux/dma-buf.h>
+#include <drm/ttm/ttm_tt.h>
+
+#include "nouveau_drv.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);
+
+ return drm_prime_pages_to_sg(obj->dev, nvbo->bo.ttm->pages,
+ nvbo->bo.ttm->num_pages);
+}
+
+struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
+ struct dma_buf_attachment *attach,
+ struct sg_table *sg)
+{
+ struct nouveau_drm *drm = nouveau_drm(dev);
+ struct drm_gem_object *obj;
+ struct nouveau_bo *nvbo;
+ struct dma_resv *robj = attach->dmabuf->resv;
+ u64 size = attach->dmabuf->size;
+ int align = 0;
+ int ret;
+
+ dma_resv_lock(robj, NULL);
+ nvbo = nouveau_bo_alloc(&drm->client, &size, &align,
+ NOUVEAU_GEM_DOMAIN_GART, 0, 0, true);
+ if (IS_ERR(nvbo)) {
+ obj = ERR_CAST(nvbo);
+ goto unlock;
+ }
+
+ nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
+
+ nvbo->bo.base.funcs = &nouveau_gem_object_funcs;
+
+ /* Initialize the embedded gem-object. We return a single gem-reference
+ * to the caller, instead of a normal nouveau_bo ttm reference. */
+ ret = drm_gem_object_init(dev, &nvbo->bo.base, size);
+ if (ret) {
+ nouveau_bo_ref(NULL, &nvbo);
+ obj = ERR_PTR(-ENOMEM);
+ goto unlock;
+ }
+
+ ret = nouveau_bo_init(nvbo, size, align, NOUVEAU_GEM_DOMAIN_GART,
+ sg, robj);
+ if (ret) {
+ obj = ERR_PTR(ret);
+ goto unlock;
+ }
+
+ obj = &nvbo->bo.base;
+
+unlock:
+ dma_resv_unlock(robj);
+ return obj;
+}
+
+int nouveau_gem_prime_pin(struct drm_gem_object *obj)
+{
+ struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+ int ret;
+
+ /* pin buffer into GTT */
+ ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_GART, false);
+ if (ret)
+ return -EINVAL;
+
+ return 0;
+}
+
+void nouveau_gem_prime_unpin(struct drm_gem_object *obj)
+{
+ struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+
+ nouveau_bo_unpin(nvbo);
+}
+
+struct dma_buf *nouveau_gem_prime_export(struct drm_gem_object *gobj,
+ int flags)
+{
+ struct nouveau_bo *nvbo = nouveau_gem_object(gobj);
+
+ if (nvbo->no_share)
+ return ERR_PTR(-EPERM);
+
+ return drm_gem_prime_export(gobj, flags);
+}