// SPDX-License-Identifier: GPL-2.0-only /* * Ampere Computing SoC's SMpro Error Monitoring Driver * * Copyright (c) 2022, Ampere Computing LLC * */ #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/regmap.h> /* GPI RAS Error Registers */ #define GPI_RAS_ERR … /* Core and L2C Error Registers */ #define CORE_CE_ERR_CNT … #define CORE_CE_ERR_LEN … #define CORE_CE_ERR_DATA … #define CORE_UE_ERR_CNT … #define CORE_UE_ERR_LEN … #define CORE_UE_ERR_DATA … /* Memory Error Registers */ #define MEM_CE_ERR_CNT … #define MEM_CE_ERR_LEN … #define MEM_CE_ERR_DATA … #define MEM_UE_ERR_CNT … #define MEM_UE_ERR_LEN … #define MEM_UE_ERR_DATA … /* RAS Error/Warning Registers */ #define ERR_SMPRO_TYPE … #define ERR_PMPRO_TYPE … #define ERR_SMPRO_INFO_LO … #define ERR_SMPRO_INFO_HI … #define ERR_SMPRO_DATA_LO … #define ERR_SMPRO_DATA_HI … #define WARN_SMPRO_INFO_LO … #define WARN_SMPRO_INFO_HI … #define ERR_PMPRO_INFO_LO … #define ERR_PMPRO_INFO_HI … #define ERR_PMPRO_DATA_LO … #define ERR_PMPRO_DATA_HI … #define WARN_PMPRO_INFO_LO … #define WARN_PMPRO_INFO_HI … /* Boot Stage Register */ #define BOOTSTAGE … #define DIMM_SYNDROME_SEL … #define DIMM_SYNDROME_ERR … #define DIMM_SYNDROME_STAGE … /* PCIE Error Registers */ #define PCIE_CE_ERR_CNT … #define PCIE_CE_ERR_LEN … #define PCIE_CE_ERR_DATA … #define PCIE_UE_ERR_CNT … #define PCIE_UE_ERR_LEN … #define PCIE_UE_ERR_DATA … /* Other Error Registers */ #define OTHER_CE_ERR_CNT … #define OTHER_CE_ERR_LEN … #define OTHER_CE_ERR_DATA … #define OTHER_UE_ERR_CNT … #define OTHER_UE_ERR_LEN … #define OTHER_UE_ERR_DATA … /* Event Data Registers */ #define VRD_WARN_FAULT_EVENT_DATA … #define VRD_HOT_EVENT_DATA … #define DIMM_HOT_EVENT_DATA … #define DIMM_2X_REFRESH_EVENT_DATA … #define MAX_READ_BLOCK_LENGTH … #define RAS_SMPRO_ERR … #define RAS_PMPRO_ERR … enum RAS_48BYTES_ERR_TYPES { … }; struct smpro_error_hdr { … }; /* * Included Address of registers to get Count, Length of data and Data * of the 48 bytes error data */ static struct smpro_error_hdr smpro_error_table[] = …; /* * List of SCP registers which are used to get * one type of RAS Internal errors. */ struct smpro_int_error_hdr { … }; static struct smpro_int_error_hdr list_smpro_int_error_hdr[] = …; struct smpro_errmon { … }; enum EVENT_TYPES { … }; /* Included Address of event source and data registers */ static u8 smpro_event_table[NUM_EVENTS_TYPE] = …; static ssize_t smpro_event_data_read(struct device *dev, struct device_attribute *da, char *buf, int channel) { … } static ssize_t smpro_overflow_data_read(struct device *dev, struct device_attribute *da, char *buf, int channel) { … } static ssize_t smpro_error_data_read(struct device *dev, struct device_attribute *da, char *buf, int channel) { … } /* * Output format: * <4-byte hex value of error info><4-byte hex value of error extensive data> * Where: * + error info : The error information * + error data : Extensive data (32 bits) * Reference to section 5.10 RAS Internal Error Register Definition in * Altra SOC BMC Interface specification */ static ssize_t smpro_internal_err_read(struct device *dev, struct device_attribute *da, char *buf, int channel) { … } /* * Output format: * <4-byte hex value of warining info> * Reference to section 5.10 RAS Internal Error Register Definition in * Altra SOC BMC Interface specification */ static ssize_t smpro_internal_warn_read(struct device *dev, struct device_attribute *da, char *buf, int channel) { … } #define ERROR_OVERFLOW_RO(_error, _index) … ERROR_OVERFLOW_RO(…); ERROR_OVERFLOW_RO(…); ERROR_OVERFLOW_RO(…); ERROR_OVERFLOW_RO(…); ERROR_OVERFLOW_RO(…); ERROR_OVERFLOW_RO(…); ERROR_OVERFLOW_RO(…); ERROR_OVERFLOW_RO(…); #define ERROR_RO(_error, _index) … ERROR_RO(…); ERROR_RO(…); ERROR_RO(…); ERROR_RO(…); ERROR_RO(…); ERROR_RO(…); ERROR_RO(…); ERROR_RO(…); static ssize_t error_smpro_show(struct device *dev, struct device_attribute *da, char *buf) { … } static DEVICE_ATTR_RO(error_smpro); static ssize_t error_pmpro_show(struct device *dev, struct device_attribute *da, char *buf) { … } static DEVICE_ATTR_RO(error_pmpro); static ssize_t warn_smpro_show(struct device *dev, struct device_attribute *da, char *buf) { … } static DEVICE_ATTR_RO(warn_smpro); static ssize_t warn_pmpro_show(struct device *dev, struct device_attribute *da, char *buf) { … } static DEVICE_ATTR_RO(warn_pmpro); #define EVENT_RO(_event, _index) … EVENT_RO(…); EVENT_RO(…); EVENT_RO(…); EVENT_RO(…); static ssize_t smpro_dimm_syndrome_read(struct device *dev, struct device_attribute *da, char *buf, unsigned int slot) { … } #define EVENT_DIMM_SYNDROME(_slot) … EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); EVENT_DIMM_SYNDROME(…); static struct attribute *smpro_errmon_attrs[] = …; ATTRIBUTE_GROUPS(…); static int smpro_errmon_probe(struct platform_device *pdev) { … } static struct platform_driver smpro_errmon_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux