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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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9b638f9751
Driver vote low to high pstate switch whenever there is an outstanding XGMI mapping request. Driver vote high to low pstate when all the outstanding XGMI mapping is terminated. Signed-off-by: shaoyunl <shaoyun.liu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
46 lines
1.9 KiB
C
46 lines
1.9 KiB
C
/*
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* Copyright 2016 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __AMDGPU_XGMI_H__
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#define __AMDGPU_XGMI_H__
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#include "amdgpu_psp.h"
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struct amdgpu_hive_info {
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uint64_t hive_id;
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struct list_head device_list;
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struct psp_xgmi_topology_info topology_info;
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int number_devices;
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struct mutex hive_lock, reset_lock;
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struct kobject *kobj;
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struct device_attribute dev_attr;
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struct amdgpu_device *adev;
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int pstate; /*0 -- low , 1 -- high , -1 unknown*/
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};
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struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev, int lock);
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int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
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int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
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void amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
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int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
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#endif
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