2 * Copyright 2019 Advanced Micro Devices, Inc.
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24 #ifndef _AMDGPU_RAS_EEPROM_H
25 #define _AMDGPU_RAS_EEPROM_H
27 #include <linux/i2c.h>
29 #define RAS_TABLE_VER_V1 0x00010000
30 #define RAS_TABLE_VER_V2_1 0x00021000
34 enum amdgpu_ras_gpu_health_status {
35 GPU_HEALTH_USABLE = 0,
36 GPU_RETIRED__ECC_REACH_THRESHOLD = 2,
39 enum amdgpu_ras_eeprom_err_type {
40 AMDGPU_RAS_EEPROM_ERR_NA,
41 AMDGPU_RAS_EEPROM_ERR_RECOVERABLE,
42 AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE,
43 AMDGPU_RAS_EEPROM_ERR_COUNT,
47 * one UMC MCA address could map to multiply physical address (PA),
48 * such as 1:16, we use eeprom_table_record.address to store MCA
49 * address and use eeprom_table_record.retired_page to save PA.
51 * AMDGPU_RAS_EEPROM_REC_PA: one record store one PA
52 * AMDGPU_RAS_EEPROM_REC_MCA: one record store one MCA address
54 enum amdgpu_ras_eeprom_rec_type {
55 AMDGPU_RAS_EEPROM_REC_PA,
56 AMDGPU_RAS_EEPROM_REC_MCA,
59 struct amdgpu_ras_eeprom_table_header {
62 uint32_t first_rec_offset;
67 struct amdgpu_ras_eeprom_table_ras_info {
70 u16 ecc_page_threshold;
74 struct amdgpu_ras_eeprom_control {
75 struct amdgpu_ras_eeprom_table_header tbl_hdr;
77 struct amdgpu_ras_eeprom_table_ras_info tbl_rai;
79 /* Base I2C EEPPROM 19-bit memory address,
80 * where the table is located. For more information,
81 * see top of amdgpu_eeprom.c.
85 /* The byte offset off of @i2c_address
86 * where the table header is found,
87 * and where the records start--always
88 * right after the header.
90 u32 ras_header_offset;
92 u32 ras_record_offset;
94 /* Number of records in the table.
98 /* the bad page number is ras_num_recs or
99 * ras_num_recs * umc.retire_unit
101 u32 ras_num_bad_pages;
103 /* First record index to read, 0-based.
104 * Range is [0, num_recs-1]. This is
105 * an absolute index, starting right after
110 /* Maximum possible number of records
111 * we could store, i.e. the maximum capacity
114 u32 ras_max_record_count;
116 /* Protect table access via this mutex.
118 struct mutex ras_tbl_mutex;
120 /* Record channel info which occurred bad pages
122 u32 bad_channel_bitmap;
123 enum amdgpu_ras_eeprom_rec_type rec_type;
127 * Represents single table record. Packed to be easily serialized into byte
130 struct eeprom_table_record {
137 uint64_t retired_page;
140 enum amdgpu_ras_eeprom_err_type err_type;
147 unsigned char mem_channel;
148 unsigned char mcumc_id;
151 int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control);
153 int amdgpu_ras_eeprom_reset_table(struct amdgpu_ras_eeprom_control *control);
155 bool amdgpu_ras_eeprom_check_err_threshold(struct amdgpu_device *adev);
157 int amdgpu_ras_eeprom_read(struct amdgpu_ras_eeprom_control *control,
158 struct eeprom_table_record *records, const u32 num);
160 int amdgpu_ras_eeprom_append(struct amdgpu_ras_eeprom_control *control,
161 struct eeprom_table_record *records, const u32 num);
163 uint32_t amdgpu_ras_eeprom_max_record_count(struct amdgpu_ras_eeprom_control *control);
165 void amdgpu_ras_debugfs_set_ret_size(struct amdgpu_ras_eeprom_control *control);
167 int amdgpu_ras_eeprom_check(struct amdgpu_ras_eeprom_control *control);
169 extern const struct file_operations amdgpu_ras_debugfs_eeprom_size_ops;
170 extern const struct file_operations amdgpu_ras_debugfs_eeprom_table_ops;
172 #endif // _AMDGPU_RAS_EEPROM_H