1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
new file mode 100644
index 000000000000..02afd4115675
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright 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.
+ *
+ */
+
+#include "amdgpu_reset.h"
+#include "aldebaran.h"
+
+int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl,
+			     struct amdgpu_reset_handler *handler)
+{
+	/* TODO: Check if handler exists? */
+	list_add_tail(&handler->handler_list, &reset_ctl->reset_handlers);
+	return 0;
+}
+
+int amdgpu_reset_init(struct amdgpu_device *adev)
+{
+	int ret = 0;
+
+	switch (adev->asic_type) {
+	case CHIP_ALDEBARAN:
+		ret = aldebaran_reset_init(adev);
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+int amdgpu_reset_fini(struct amdgpu_device *adev)
+{
+	int ret = 0;
+
+	switch (adev->asic_type) {
+	case CHIP_ALDEBARAN:
+		ret = aldebaran_reset_fini(adev);
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
+				   struct amdgpu_reset_context *reset_context)
+{
+	struct amdgpu_reset_handler *reset_handler = NULL;
+
+	if (adev->reset_cntl && adev->reset_cntl->get_reset_handler)
+		reset_handler = adev->reset_cntl->get_reset_handler(
+			adev->reset_cntl, reset_context);
+	if (!reset_handler)
+		return -ENOSYS;
+
+	return reset_handler->prepare_hwcontext(adev->reset_cntl,
+						reset_context);
+}
+
+int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
+			       struct amdgpu_reset_context *reset_context)
+{
+	int ret;
+	struct amdgpu_reset_handler *reset_handler = NULL;
+
+	if (adev->reset_cntl)
+		reset_handler = adev->reset_cntl->get_reset_handler(
+			adev->reset_cntl, reset_context);
+	if (!reset_handler)
+		return -ENOSYS;
+
+	ret = reset_handler->perform_reset(adev->reset_cntl, reset_context);
+	if (ret)
+		return ret;
+
+	return reset_handler->restore_hwcontext(adev->reset_cntl,
+						reset_context);
+}