fb: add begin_cpu_access & end_cpu_access

2 files changed, 15 insertions, 0 deletions

diff --git a/kms++/inc/kms++/dmabufframebuffer.h b/kms++/inc/kms++/dmabufframebuffer.h
index 494aa97..95460cb 100644
--- a/kms++/inc/kms++/dmabufframebuffer.h
+++ b/kms++/inc/kms++/dmabufframebuffer.h
@@ -27,6 +27,9 @@ public:
 	uint8_t* map(unsigned plane);
 	int prime_fd(unsigned plane);
 
+	void begin_cpu_access(CpuAccess access);
+	void end_cpu_access();
+
 private:
 	struct FramebufferPlane {
 		uint32_t handle;
@@ -41,6 +44,8 @@ private:
 	struct FramebufferPlane m_planes[4];
 
 	PixelFormat m_format;
+
+	uint32_t m_sync_flags = 0;
 };
 
 }
diff --git a/kms++/inc/kms++/framebuffer.h b/kms++/inc/kms++/framebuffer.h
index 3d43d08..6f90541 100644
--- a/kms++/inc/kms++/framebuffer.h
+++ b/kms++/inc/kms++/framebuffer.h
@@ -5,6 +5,13 @@
 
 namespace kms
 {
+enum class CpuAccess
+{
+	Read,
+	Write,
+	ReadWrite,
+};
+
 class IFramebuffer {
 public:
 	virtual ~IFramebuffer() { }
@@ -20,6 +27,9 @@ public:
 	virtual uint32_t offset(unsigned plane) const { throw std::runtime_error("not implemented"); }
 	virtual uint8_t* map(unsigned plane) { throw std::runtime_error("not implemented"); }
 	virtual int prime_fd(unsigned plane) { throw std::runtime_error("not implemented"); }
+
+	virtual void begin_cpu_access(CpuAccess access) { }
+	virtual void end_cpu_access() { }
 };
 
 class Framebuffer : public DrmObject, public IFramebuffer