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From 056084ac47a9b6aab3c3815758b31ef961c1297f Mon Sep 17 00:00:00 2001
From: Qiang Yu <Qiang.Yu@amd.com>
Date: Fri, 24 Jun 2016 12:05:22 +0800
Subject: [PATCH 070/117] amdgpu: add amdgpu_bo_inc_ref() function.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Change-Id: Icdc00d3e22e48120ca6f4d73ffd05ba43551ad2c
Signed-off-by: Qiang Yu <Qiang.Yu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
---
amdgpu/amdgpu.h | 13 +++++++++++++
amdgpu/amdgpu_bo.c | 6 ++++++
2 files changed, 19 insertions(+)
diff --git a/amdgpu/amdgpu.h b/amdgpu/amdgpu.h
index 693d841..d8c436f 100644
--- a/amdgpu/amdgpu.h
+++ b/amdgpu/amdgpu.h
@@ -716,6 +716,19 @@ int amdgpu_find_bo_by_cpu_mapping(amdgpu_device_handle dev,
int amdgpu_bo_free(amdgpu_bo_handle buf_handle);
/**
+ * Increase the reference count of a buffer object
+ *
+ * \param bo - \c [in] Buffer object handle to increase the reference count
+ *
+ * \return 0 on success\n
+ * <0 - Negative POSIX Error code
+ *
+ * \sa amdgpu_bo_alloc(), amdgpu_bo_free()
+ *
+*/
+int amdgpu_bo_inc_ref(amdgpu_bo_handle bo);
+
+/**
* Request CPU access to GPU accessable memory
*
* \param buf_handle - \c [in] Buffer handle
diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
index aa0d001..c3f5fb9 100644
--- a/amdgpu/amdgpu_bo.c
+++ b/amdgpu/amdgpu_bo.c
@@ -424,6 +424,12 @@ int amdgpu_bo_free(amdgpu_bo_handle buf_handle)
return 0;
}
+int amdgpu_bo_inc_ref(amdgpu_bo_handle bo)
+{
+ atomic_inc(&bo->refcount);
+ return 0;
+}
+
int amdgpu_bo_cpu_map(amdgpu_bo_handle bo, void **cpu)
{
union drm_amdgpu_gem_mmap args;
--
2.7.4
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