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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/radeon/radeon_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/radeon/radeon_prime.c')
-rw-r--r--kernel/drivers/gpu/drm/radeon/radeon_prime.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/radeon/radeon_prime.c b/kernel/drivers/gpu/drm/radeon/radeon_prime.c
new file mode 100644
index 000000000..f3609c974
--- /dev/null
+++ b/kernel/drivers/gpu/drm/radeon/radeon_prime.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2012 Advanced Micro Devices, 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.
+ *
+ * based on nouveau_prime.c
+ *
+ * Authors: Alex Deucher
+ */
+#include <drm/drmP.h>
+
+#include "radeon.h"
+#include <drm/radeon_drm.h>
+#include <linux/dma-buf.h>
+
+struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj)
+{
+ struct radeon_bo *bo = gem_to_radeon_bo(obj);
+ int npages = bo->tbo.num_pages;
+
+ return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages);
+}
+
+void *radeon_gem_prime_vmap(struct drm_gem_object *obj)
+{
+ struct radeon_bo *bo = gem_to_radeon_bo(obj);
+ int ret;
+
+ ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages,
+ &bo->dma_buf_vmap);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return bo->dma_buf_vmap.virtual;
+}
+
+void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
+{
+ struct radeon_bo *bo = gem_to_radeon_bo(obj);
+
+ ttm_bo_kunmap(&bo->dma_buf_vmap);
+}
+
+struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
+ struct dma_buf_attachment *attach,
+ struct sg_table *sg)
+{
+ struct reservation_object *resv = attach->dmabuf->resv;
+ struct radeon_device *rdev = dev->dev_private;
+ struct radeon_bo *bo;
+ int ret;
+
+ ww_mutex_lock(&resv->lock, NULL);
+ ret = radeon_bo_create(rdev, attach->dmabuf->size, PAGE_SIZE, false,
+ RADEON_GEM_DOMAIN_GTT, 0, sg, resv, &bo);
+ ww_mutex_unlock(&resv->lock);
+ if (ret)
+ return ERR_PTR(ret);
+
+ mutex_lock(&rdev->gem.mutex);
+ list_add_tail(&bo->list, &rdev->gem.objects);
+ mutex_unlock(&rdev->gem.mutex);
+
+ return &bo->gem_base;
+}
+
+int radeon_gem_prime_pin(struct drm_gem_object *obj)
+{
+ struct radeon_bo *bo = gem_to_radeon_bo(obj);
+ int ret = 0;
+
+ ret = radeon_bo_reserve(bo, false);
+ if (unlikely(ret != 0))
+ return ret;
+
+ /* pin buffer into GTT */
+ ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
+ radeon_bo_unreserve(bo);
+ return ret;
+}
+
+void radeon_gem_prime_unpin(struct drm_gem_object *obj)
+{
+ struct radeon_bo *bo = gem_to_radeon_bo(obj);
+ int ret = 0;
+
+ ret = radeon_bo_reserve(bo, false);
+ if (unlikely(ret != 0))
+ return;
+
+ radeon_bo_unpin(bo);
+ radeon_bo_unreserve(bo);
+}
+
+
+struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *obj)
+{
+ struct radeon_bo *bo = gem_to_radeon_bo(obj);
+
+ return bo->tbo.resv;
+}
+
+struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
+ struct drm_gem_object *gobj,
+ int flags)
+{
+ struct radeon_bo *bo = gem_to_radeon_bo(gobj);
+ if (radeon_ttm_tt_has_userptr(bo->tbo.ttm))
+ return ERR_PTR(-EPERM);
+ return drm_gem_prime_export(dev, gobj, flags);
+}