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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/nouveau/nouveau_prime.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/nouveau/nouveau_prime.c')
-rw-r--r--kernel/drivers/gpu/drm/nouveau/nouveau_prime.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/nouveau/nouveau_prime.c b/kernel/drivers/gpu/drm/nouveau/nouveau_prime.c
new file mode 100644
index 000000000..dd32ad6db
--- /dev/null
+++ b/kernel/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 <drm/drmP.h>
+#include <linux/dma-buf.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,
+ struct dma_buf_attachment *attach,
+ struct sg_table *sg)
+{
+ struct nouveau_bo *nvbo;
+ struct reservation_object *robj = attach->dmabuf->resv;
+ u32 flags = 0;
+ int ret;
+
+ flags = TTM_PL_FLAG_TT;
+
+ ww_mutex_lock(&robj->lock, NULL);
+ ret = nouveau_bo_new(dev, attach->dmabuf->size, 0, flags, 0, 0,
+ sg, robj, &nvbo);
+ ww_mutex_unlock(&robj->lock);
+ if (ret)
+ return ERR_PTR(ret);
+
+ nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
+
+ /* 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->gem, nvbo->bo.mem.size);
+ if (ret) {
+ nouveau_bo_ref(NULL, &nvbo);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return &nvbo->gem;
+}
+
+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, TTM_PL_FLAG_TT, 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 reservation_object *nouveau_gem_prime_res_obj(struct drm_gem_object *obj)
+{
+ struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+
+ return nvbo->bo.resv;
+}