1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.h b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.h
new file mode 100644
index 000000000000..0de76b5d4973
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/*
+ * Copyright 2020-2021 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.
+ *
+ */
+
+#ifndef KFD_MIGRATE_H_
+#define KFD_MIGRATE_H_
+
+#if IS_ENABLED(CONFIG_HSA_AMD_SVM)
+
+#include <linux/rwsem.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/sched/mm.h>
+#include <linux/hmm.h>
+#include "kfd_priv.h"
+#include "kfd_svm.h"
+
+enum MIGRATION_COPY_DIR {
+	FROM_RAM_TO_VRAM = 0,
+	FROM_VRAM_TO_RAM
+};
+
+int svm_migrate_to_vram(struct svm_range *prange,  uint32_t best_loc,
+			struct mm_struct *mm);
+int svm_migrate_vram_to_ram(struct svm_range *prange, struct mm_struct *mm);
+unsigned long
+svm_migrate_addr_to_pfn(struct amdgpu_device *adev, unsigned long addr);
+
+int svm_migrate_init(struct amdgpu_device *adev);
+void svm_migrate_fini(struct amdgpu_device *adev);
+
+#else
+
+static inline int svm_migrate_init(struct amdgpu_device *adev)
+{
+	return 0;
+}
+static inline void svm_migrate_fini(struct amdgpu_device *adev)
+{
+	/* empty */
+}
+
+#endif /* IS_ENABLED(CONFIG_HSA_AMD_SVM) */
+
+#endif /* KFD_MIGRATE_H_ */