2 * Copyright 2019 Advanced Micro Devices, Inc.
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5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
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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:
11 * The above copyright notice and this permission notice shall be included in
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24 #ifndef _AMDGPU_RAS_EEPROM_H
25 #define _AMDGPU_RAS_EEPROM_H
27 #include <linux/i2c.h>
31 enum amdgpu_ras_eeprom_err_type {
32 AMDGPU_RAS_EEPROM_ERR_NA,
33 AMDGPU_RAS_EEPROM_ERR_RECOVERABLE,
34 AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE,
35 AMDGPU_RAS_EEPROM_ERR_COUNT,
38 struct amdgpu_ras_eeprom_table_header {
41 uint32_t first_rec_offset;
46 struct amdgpu_ras_eeprom_control {
47 struct amdgpu_ras_eeprom_table_header tbl_hdr;
49 /* Base I2C EEPPROM 19-bit memory address,
50 * where the table is located. For more information,
51 * see top of amdgpu_eeprom.c.
55 /* The byte offset off of @i2c_address
56 * where the table header is found,
57 * and where the records start--always
58 * right after the header.
60 u32 ras_header_offset;
61 u32 ras_record_offset;
63 /* Number of records in the table.
67 /* First record index to read, 0-based.
68 * Range is [0, num_recs-1]. This is
69 * an absolute index, starting right after
74 /* Maximum possible number of records
75 * we could store, i.e. the maximum capacity
78 u32 ras_max_record_count;
80 /* Protect table access via this mutex.
82 struct mutex ras_tbl_mutex;
86 * Represents single table record. Packed to be easily serialized into byte
89 struct eeprom_table_record {
96 uint64_t retired_page;
99 enum amdgpu_ras_eeprom_err_type err_type;
106 unsigned char mem_channel;
107 unsigned char mcumc_id;
110 int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control,
111 bool *exceed_err_limit);
113 int amdgpu_ras_eeprom_reset_table(struct amdgpu_ras_eeprom_control *control);
115 bool amdgpu_ras_eeprom_check_err_threshold(struct amdgpu_device *adev);
117 int amdgpu_ras_eeprom_read(struct amdgpu_ras_eeprom_control *control,
118 struct eeprom_table_record *records, const u32 num);
120 int amdgpu_ras_eeprom_append(struct amdgpu_ras_eeprom_control *control,
121 struct eeprom_table_record *records, const u32 num);
123 inline uint32_t amdgpu_ras_eeprom_max_record_count(void);
125 void amdgpu_ras_debugfs_set_ret_size(struct amdgpu_ras_eeprom_control *control);
127 extern const struct file_operations amdgpu_ras_debugfs_eeprom_size_ops;
128 extern const struct file_operations amdgpu_ras_debugfs_eeprom_table_ops;
130 #endif // _AMDGPU_RAS_EEPROM_H