1 /* $NetBSD: amdgpu_mmhub.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $ */ 2 3 /* 4 * Copyright 2019 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 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: amdgpu_mmhub.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $"); 28 29 #include "amdgpu.h" 30 #include "amdgpu_ras.h" 31 32 int amdgpu_mmhub_ras_late_init(struct amdgpu_device *adev) 33 { 34 int r; 35 struct ras_ih_if ih_info = { 36 .cb = NULL, 37 }; 38 struct ras_fs_if fs_info = { 39 .sysfs_name = "mmhub_err_count", 40 .debugfs_name = "mmhub_err_inject", 41 }; 42 43 if (!adev->mmhub.ras_if) { 44 adev->mmhub.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL); 45 if (!adev->mmhub.ras_if) 46 return -ENOMEM; 47 adev->mmhub.ras_if->block = AMDGPU_RAS_BLOCK__MMHUB; 48 adev->mmhub.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE; 49 adev->mmhub.ras_if->sub_block_index = 0; 50 strcpy(adev->mmhub.ras_if->name, "mmhub"); 51 } 52 ih_info.head = fs_info.head = *adev->mmhub.ras_if; 53 r = amdgpu_ras_late_init(adev, adev->mmhub.ras_if, 54 &fs_info, &ih_info); 55 if (r || !amdgpu_ras_is_supported(adev, adev->mmhub.ras_if->block)) { 56 kfree(adev->mmhub.ras_if); 57 adev->mmhub.ras_if = NULL; 58 } 59 60 return r; 61 } 62 63 void amdgpu_mmhub_ras_fini(struct amdgpu_device *adev) 64 { 65 if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__MMHUB) && 66 adev->mmhub.ras_if) { 67 struct ras_common_if *ras_if = adev->mmhub.ras_if; 68 struct ras_ih_if ih_info = { 69 .cb = NULL, 70 }; 71 72 amdgpu_ras_late_fini(adev, ras_if, &ih_info); 73 kfree(ras_if); 74 } 75 } 76