diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h new file mode 100644 index 000000000..6dfd667f3 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h @@ -0,0 +1,152 @@ +/* + * 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> + +#define RAS_TABLE_VER_V1 0x00010000 +#define RAS_TABLE_VER_V2_1 0x00021000 + +struct amdgpu_device; + +enum amdgpu_ras_gpu_health_status { + GPU_HEALTH_USABLE = 0, + GPU_RETIRED__ECC_REACH_THRESHOLD = 2, +}; + +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_table_ras_info { + u8 rma_status; + u8 health_percent; + u16 ecc_page_threshold; + u32 padding[64 - 1]; +} __packed; + +struct amdgpu_ras_eeprom_control { + struct amdgpu_ras_eeprom_table_header tbl_hdr; + + struct amdgpu_ras_eeprom_table_ras_info tbl_rai; + + /* 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_info_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(struct amdgpu_ras_eeprom_control *control); + +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 |