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/*
* Copyright 2019 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef _AMDGPU_RAS_EEPROM_H
#define _AMDGPU_RAS_EEPROM_H
#include <linux/i2c.h>
struct amdgpu_device;
enum amdgpu_ras_eeprom_err_type {
AMDGPU_RAS_EEPROM_ERR_NA,
AMDGPU_RAS_EEPROM_ERR_RECOVERABLE,
AMDGPU_RAS_EEPROM_ERR_NON_RECOVERABLE,
AMDGPU_RAS_EEPROM_ERR_COUNT,
};
struct amdgpu_ras_eeprom_table_header {
uint32_t header;
uint32_t version;
uint32_t first_rec_offset;
uint32_t tbl_size;
uint32_t checksum;
} __packed;
struct amdgpu_ras_eeprom_control {
struct amdgpu_ras_eeprom_table_header tbl_hdr;
/* Base I2C EEPPROM 19-bit memory address,
* where the table is located. For more information,
* see top of amdgpu_eeprom.c.
*/
u32 i2c_address;
/* The byte offset off of @i2c_address
* where the table header is found,
* and where the records start--always
* right after the header.
*/
u32 ras_header_offset;
u32 ras_record_offset;
/* Number of records in the table.
*/
u32 ras_num_recs;
/* First record index to read, 0-based.
* Range is [0, num_recs-1]. This is
* an absolute index, starting right after
* the table header.
*/
u32 ras_fri;
/* Maximum possible number of records
* we could store, i.e. the maximum capacity
* of the table.
*/
u32 ras_max_record_count;
/* Protect table access via this mutex.
*/
struct mutex ras_tbl_mutex;
/* Record channel info which occurred bad pages
*/
u32 bad_channel_bitmap;
};
/*
* Represents single table record. Packed to be easily serialized into byte
* stream.
*/
struct eeprom_table_record {
union {
uint64_t address;
uint64_t offset;
};
uint64_t retired_page;
uint64_t ts;
enum amdgpu_ras_eeprom_err_type err_type;
union {
unsigned char bank;
unsigned char cu;
};
unsigned char mem_channel;
unsigned char mcumc_id;
} __packed;
int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control,
bool *exceed_err_limit);
int amdgpu_ras_eeprom_reset_table(struct amdgpu_ras_eeprom_control *control);
bool amdgpu_ras_eeprom_check_err_threshold(struct amdgpu_device *adev);
int amdgpu_ras_eeprom_read(struct amdgpu_ras_eeprom_control *control,
struct eeprom_table_record *records, const u32 num);
int amdgpu_ras_eeprom_append(struct amdgpu_ras_eeprom_control *control,
struct eeprom_table_record *records, const u32 num);
uint32_t amdgpu_ras_eeprom_max_record_count(void);
void amdgpu_ras_debugfs_set_ret_size(struct amdgpu_ras_eeprom_control *control);
extern const struct file_operations amdgpu_ras_debugfs_eeprom_size_ops;
extern const struct file_operations amdgpu_ras_debugfs_eeprom_table_ops;
#endif // _AMDGPU_RAS_EEPROM_H
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