drivers/ras/ras.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2014 Intel Corporation
   4  *
   5  * Authors:
   6  *      Chen, Gong <gong.chen@linux.intel.com>
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/ras.h>
  11 #include <linux/uuid.h>
  12
  13 #if IS_ENABLED(CONFIG_AMD_ATL)
  14 /*
  15  * Once set, this function pointer should never be unset.
  16  *
  17  * The library module will set this pointer if it successfully loads. The module
  18  * should not be unloaded except for testing and debug purposes.
  19  */
  20 static unsigned long (*amd_atl_umc_na_to_spa)(struct atl_err *err);
  21
  22 void amd_atl_register_decoder(unsigned long (*f)(struct atl_err *))
  23 {
  24         amd_atl_umc_na_to_spa = f;
  25 }
  26 EXPORT_SYMBOL_GPL(amd_atl_register_decoder);
  27
  28 void amd_atl_unregister_decoder(void)
  29 {
  30         amd_atl_umc_na_to_spa = NULL;
  31 }
  32 EXPORT_SYMBOL_GPL(amd_atl_unregister_decoder);
  33
  34 unsigned long amd_convert_umc_mca_addr_to_sys_addr(struct atl_err *err)
  35 {
  36         if (!amd_atl_umc_na_to_spa)
  37                 return -EINVAL;
  38
  39         return amd_atl_umc_na_to_spa(err);
  40 }
  41 EXPORT_SYMBOL_GPL(amd_convert_umc_mca_addr_to_sys_addr);
  42 #endif /* CONFIG_AMD_ATL */
  43
  44 #define CREATE_TRACE_POINTS
  45 #define TRACE_INCLUDE_PATH ../../include/ras
  46 #include <ras/ras_event.h>
  47
  48 void log_non_standard_event(const guid_t *sec_type, const guid_t *fru_id,
  49                             const char *fru_text, const u8 sev, const u8 *err,
  50                             const u32 len)
  51 {
  52         trace_non_standard_event(sec_type, fru_id, fru_text, sev, err, len);
  53 }
  54
  55 void log_arm_hw_error(struct cper_sec_proc_arm *err)
  56 {
  57         trace_arm_event(err);
  58 }
  59
  60 static int __init ras_init(void)
  61 {
  62         int rc = 0;
  63
  64         ras_debugfs_init();
  65         rc = ras_add_daemon_trace();
  66
  67         return rc;
  68 }
  69 subsys_initcall(ras_init);
  70
  71 #if defined(CONFIG_ACPI_EXTLOG) || defined(CONFIG_ACPI_EXTLOG_MODULE)
  72 EXPORT_TRACEPOINT_SYMBOL_GPL(extlog_mem_event);
  73 #endif
  74 EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event);
  75 EXPORT_TRACEPOINT_SYMBOL_GPL(non_standard_event);
  76 EXPORT_TRACEPOINT_SYMBOL_GPL(arm_event);
  77
  78 static int __init parse_ras_param(char *str)
  79 {
  80 #ifdef CONFIG_RAS_CEC
  81         parse_cec_param(str);
  82 #endif
  83
  84         return 1;
  85 }
  86 __setup("ras", parse_ras_param);