1 /* $NetBSD: amdgpu_ras_eeprom.h,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 #ifndef _AMDGPU_RAS_EEPROM_H 27 #define _AMDGPU_RAS_EEPROM_H 28 29 #include <linux/i2c.h> 30 31 struct amdgpu_device; 32 33 enum amdgpu_ras_eeprom_err_type{ 34 AMDGPU_RAS_EEPROM_ERR_PLACE_HOLDER, 35 AMDGPU_RAS_EEPROM_ERR_RECOVERABLE, 36 AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE 37 }; 38 39 struct amdgpu_ras_eeprom_table_header { 40 uint32_t header; 41 uint32_t version; 42 uint32_t first_rec_offset; 43 uint32_t tbl_size; 44 uint32_t checksum; 45 }__attribute__((__packed__)); 46 47 struct amdgpu_ras_eeprom_control { 48 struct amdgpu_ras_eeprom_table_header tbl_hdr; 49 struct i2c_adapter eeprom_accessor; 50 uint32_t next_addr; 51 unsigned int num_recs; 52 struct mutex tbl_mutex; 53 bool bus_locked; 54 uint32_t tbl_byte_sum; 55 uint16_t i2c_address; // 8-bit represented address 56 }; 57 58 /* 59 * Represents single table record. Packed to be easily serialized into byte 60 * stream. 61 */ 62 struct eeprom_table_record { 63 64 union { 65 uint64_t address; 66 uint64_t offset; 67 }; 68 69 uint64_t retired_page; 70 uint64_t ts; 71 72 enum amdgpu_ras_eeprom_err_type err_type; 73 74 union { 75 unsigned char bank; 76 unsigned char cu; 77 }; 78 79 unsigned char mem_channel; 80 unsigned char mcumc_id; 81 }__attribute__((__packed__)); 82 83 int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control); 84 void amdgpu_ras_eeprom_fini(struct amdgpu_ras_eeprom_control *control); 85 int amdgpu_ras_eeprom_reset_table(struct amdgpu_ras_eeprom_control *control); 86 87 int amdgpu_ras_eeprom_process_recods(struct amdgpu_ras_eeprom_control *control, 88 struct eeprom_table_record *records, 89 bool write, 90 int num); 91 92 void amdgpu_ras_eeprom_test(struct amdgpu_ras_eeprom_control *control); 93 94 #endif // _AMDGPU_RAS_EEPROM_H 95