1 /* 2 * Copyright 2019 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 */ 23 24 #ifndef _AMDGPU_RAS_EEPROM_H 25 #define _AMDGPU_RAS_EEPROM_H 26 27 #include <linux/i2c.h> 28 29 #define RAS_TABLE_VER_V1 0x00010000 30 #define RAS_TABLE_VER_V2_1 0x00021000 31 #define RAS_TABLE_VER_V3 0x00030000 32 33 struct amdgpu_device; 34 35 enum amdgpu_ras_gpu_health_status { 36 GPU_HEALTH_USABLE = 0, 37 GPU_RETIRED__ECC_REACH_THRESHOLD = 2, 38 }; 39 40 enum amdgpu_ras_eeprom_err_type { 41 AMDGPU_RAS_EEPROM_ERR_NA, 42 AMDGPU_RAS_EEPROM_ERR_RECOVERABLE, 43 AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE, 44 AMDGPU_RAS_EEPROM_ERR_COUNT, 45 }; 46 47 struct amdgpu_ras_eeprom_table_header { 48 uint32_t header; 49 uint32_t version; 50 uint32_t first_rec_offset; 51 uint32_t tbl_size; 52 uint32_t checksum; 53 } __packed; 54 55 struct amdgpu_ras_eeprom_table_ras_info { 56 u8 rma_status; 57 u8 health_percent; 58 u16 ecc_page_threshold; 59 u32 padding[64 - 1]; 60 } __packed; 61 62 struct amdgpu_ras_eeprom_control { 63 struct amdgpu_ras_eeprom_table_header tbl_hdr; 64 65 struct amdgpu_ras_eeprom_table_ras_info tbl_rai; 66 67 /* Base I2C EEPPROM 19-bit memory address, 68 * where the table is located. For more information, 69 * see top of amdgpu_eeprom.c. 70 */ 71 u32 i2c_address; 72 73 /* The byte offset off of @i2c_address 74 * where the table header is found, 75 * and where the records start--always 76 * right after the header. 77 */ 78 u32 ras_header_offset; 79 u32 ras_info_offset; 80 u32 ras_record_offset; 81 82 /* Number of records in the table. 83 */ 84 u32 ras_num_recs; 85 86 /* the bad page number is ras_num_recs or 87 * ras_num_recs * umc.retire_unit 88 */ 89 u32 ras_num_bad_pages; 90 91 /* Number of records store mca address */ 92 u32 ras_num_mca_recs; 93 94 /* Number of records store physical address */ 95 u32 ras_num_pa_recs; 96 97 /* First record index to read, 0-based. 98 * Range is [0, num_recs-1]. This is 99 * an absolute index, starting right after 100 * the table header. 101 */ 102 u32 ras_fri; 103 104 /* Maximum possible number of records 105 * we could store, i.e. the maximum capacity 106 * of the table. 107 */ 108 u32 ras_max_record_count; 109 110 /* Protect table access via this mutex. 111 */ 112 struct mutex ras_tbl_mutex; 113 114 /* Record channel info which occurred bad pages 115 */ 116 u32 bad_channel_bitmap; 117 }; 118 119 /* 120 * Represents single table record. Packed to be easily serialized into byte 121 * stream. 122 */ 123 struct eeprom_table_record { 124 125 union { 126 uint64_t address; 127 uint64_t offset; 128 }; 129 130 uint64_t retired_page; 131 uint64_t ts; 132 133 enum amdgpu_ras_eeprom_err_type err_type; 134 135 union { 136 unsigned char bank; 137 unsigned char cu; 138 }; 139 140 unsigned char mem_channel; 141 unsigned char mcumc_id; 142 } __packed; 143 144 int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control); 145 146 int amdgpu_ras_eeprom_reset_table(struct amdgpu_ras_eeprom_control *control); 147 148 bool amdgpu_ras_eeprom_check_err_threshold(struct amdgpu_device *adev); 149 150 int amdgpu_ras_eeprom_read(struct amdgpu_ras_eeprom_control *control, 151 struct eeprom_table_record *records, const u32 num); 152 153 int amdgpu_ras_eeprom_append(struct amdgpu_ras_eeprom_control *control, 154 struct eeprom_table_record *records, const u32 num); 155 156 uint32_t amdgpu_ras_eeprom_max_record_count(struct amdgpu_ras_eeprom_control *control); 157 158 void amdgpu_ras_debugfs_set_ret_size(struct amdgpu_ras_eeprom_control *control); 159 160 int amdgpu_ras_eeprom_check(struct amdgpu_ras_eeprom_control *control); 161 162 extern const struct file_operations amdgpu_ras_debugfs_eeprom_size_ops; 163 extern const struct file_operations amdgpu_ras_debugfs_eeprom_table_ops; 164 165 #endif // _AMDGPU_RAS_EEPROM_H 166