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From 9b6ea4163e7b060e23f4037ab63719da4ecdfdc5 Mon Sep 17 00:00:00 2001
From: Christian Koenig <christian.koenig@amd.com>
Date: Wed, 2 Dec 2015 15:40:55 +0100
Subject: [PATCH 1378/4131] drm/amdgpu: enable foreign DMA-buf objects
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We should be able to handle BOs from other instances as well.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: kalyan.alle <kalyan.alle@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 ++
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c | 19 +++++++++++++++++++
3 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index c876ad5..d6d7924 100755
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -406,6 +406,8 @@ amdgpu_gem_prime_import_sg_table(struct drm_device *dev,
struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev,
struct drm_gem_object *gobj,
int flags);
+struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf);
int amdgpu_gem_prime_pin(struct drm_gem_object *obj);
void amdgpu_gem_prime_unpin(struct drm_gem_object *obj);
struct reservation_object *amdgpu_gem_prime_res_obj(struct drm_gem_object *);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 0720358..a61a7daf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -840,7 +840,7 @@ static struct drm_driver kms_driver = {
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_export = amdgpu_gem_prime_export,
- .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_import = amdgpu_gem_prime_import,
.gem_prime_pin = amdgpu_gem_prime_pin,
.gem_prime_unpin = amdgpu_gem_prime_unpin,
.gem_prime_res_obj = amdgpu_gem_prime_res_obj,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
index 458e99a..8beb92e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
@@ -201,3 +201,22 @@ amdgpu_gem_prime_foreign_bo(struct amdgpu_device *adev, struct amdgpu_bo *bo)
return &gobj->base;
}
+struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf)
+{
+ struct amdgpu_device *adev = dev->dev_private;
+
+ if (dma_buf->ops == &drm_gem_prime_dmabuf_ops) {
+ struct drm_gem_object *obj = dma_buf->priv;
+
+ if (obj->dev != dev && obj->dev->driver == dev->driver) {
+ /* It's a amdgpu_bo from a different driver instance */
+ struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
+
+ return amdgpu_gem_prime_foreign_bo(adev, bo);
+ }
+ }
+
+ return drm_gem_prime_import(dev, dma_buf);
+}
+
--
2.7.4
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