1 /* $NetBSD: amdgpu_xgmi.h,v 1.3 2021/12/19 10:59:01 riastradh Exp $ */ 2 3 /* 4 * Copyright 2016 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 #ifndef __AMDGPU_XGMI_H__ 25 #define __AMDGPU_XGMI_H__ 26 27 #include <drm/task_barrier.h> 28 #include "amdgpu_psp.h" 29 30 struct amdgpu_hive_info { 31 uint64_t hive_id; 32 struct list_head device_list; 33 int number_devices; 34 struct mutex hive_lock, reset_lock; 35 struct kobject *kobj; 36 #ifdef CONFIG_SYSFS 37 struct device_attribute dev_attr; 38 #endif 39 struct amdgpu_device *adev; 40 int pstate; /*0 -- low , 1 -- high , -1 unknown*/ 41 struct task_barrier tb; 42 }; 43 44 struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev, int lock); 45 int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev); 46 int amdgpu_xgmi_add_device(struct amdgpu_device *adev); 47 void amdgpu_xgmi_remove_device(struct amdgpu_device *adev); 48 int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate); 49 int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev, 50 struct amdgpu_device *peer_adev); 51 int amdgpu_xgmi_ras_late_init(struct amdgpu_device *adev); 52 void amdgpu_xgmi_ras_fini(struct amdgpu_device *adev); 53 54 static inline bool amdgpu_xgmi_same_hive(struct amdgpu_device *adev, 55 struct amdgpu_device *bo_adev) 56 { 57 return (adev != bo_adev && 58 adev->gmc.xgmi.hive_id && 59 adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id); 60 } 61 62 #endif 63