343 lines
11 KiB
C
343 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* UEFI Common Platform Error Record (CPER) support
|
|
*
|
|
* Copyright (C) 2017, The Linux Foundation. All rights reserved.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/time.h>
|
|
#include <linux/cper.h>
|
|
#include <linux/dmi.h>
|
|
#include <linux/acpi.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/aer.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/bcd.h>
|
|
#include <acpi/ghes.h>
|
|
#include <ras/ras_event.h>
|
|
|
|
static const char * const arm_reg_ctx_strs[] = {
|
|
"AArch32 general purpose registers",
|
|
"AArch32 EL1 context registers",
|
|
"AArch32 EL2 context registers",
|
|
"AArch32 secure context registers",
|
|
"AArch64 general purpose registers",
|
|
"AArch64 EL1 context registers",
|
|
"AArch64 EL2 context registers",
|
|
"AArch64 EL3 context registers",
|
|
"Misc. system register structure",
|
|
};
|
|
|
|
static const char * const arm_err_trans_type_strs[] = {
|
|
"Instruction",
|
|
"Data Access",
|
|
"Generic",
|
|
};
|
|
|
|
static const char * const arm_bus_err_op_strs[] = {
|
|
"Generic error (type cannot be determined)",
|
|
"Generic read (type of instruction or data request cannot be determined)",
|
|
"Generic write (type of instruction of data request cannot be determined)",
|
|
"Data read",
|
|
"Data write",
|
|
"Instruction fetch",
|
|
"Prefetch",
|
|
};
|
|
|
|
static const char * const arm_cache_err_op_strs[] = {
|
|
"Generic error (type cannot be determined)",
|
|
"Generic read (type of instruction or data request cannot be determined)",
|
|
"Generic write (type of instruction of data request cannot be determined)",
|
|
"Data read",
|
|
"Data write",
|
|
"Instruction fetch",
|
|
"Prefetch",
|
|
"Eviction",
|
|
"Snooping (processor initiated a cache snoop that resulted in an error)",
|
|
"Snooped (processor raised a cache error caused by another processor or device snooping its cache)",
|
|
"Management",
|
|
};
|
|
|
|
static const char * const arm_tlb_err_op_strs[] = {
|
|
"Generic error (type cannot be determined)",
|
|
"Generic read (type of instruction or data request cannot be determined)",
|
|
"Generic write (type of instruction of data request cannot be determined)",
|
|
"Data read",
|
|
"Data write",
|
|
"Instruction fetch",
|
|
"Prefetch",
|
|
"Local management operation (processor initiated a TLB management operation that resulted in an error)",
|
|
"External management operation (processor raised a TLB error caused by another processor or device broadcasting TLB operations)",
|
|
};
|
|
|
|
static const char * const arm_bus_err_part_type_strs[] = {
|
|
"Local processor originated request",
|
|
"Local processor responded to request",
|
|
"Local processor observed",
|
|
"Generic",
|
|
};
|
|
|
|
static const char * const arm_bus_err_addr_space_strs[] = {
|
|
"External Memory Access",
|
|
"Internal Memory Access",
|
|
"Unknown",
|
|
"Device Memory Access",
|
|
};
|
|
|
|
static void cper_print_arm_err_info(const char *pfx, u32 type,
|
|
u64 error_info)
|
|
{
|
|
u8 trans_type, op_type, level, participation_type, address_space;
|
|
u16 mem_attributes;
|
|
bool proc_context_corrupt, corrected, precise_pc, restartable_pc;
|
|
bool time_out, access_mode;
|
|
|
|
/* If the type is unknown, bail. */
|
|
if (type > CPER_ARM_MAX_TYPE)
|
|
return;
|
|
|
|
/*
|
|
* Vendor type errors have error information values that are vendor
|
|
* specific.
|
|
*/
|
|
if (type == CPER_ARM_VENDOR_ERROR)
|
|
return;
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_TRANSACTION_TYPE) {
|
|
trans_type = ((error_info >> CPER_ARM_ERR_TRANSACTION_SHIFT)
|
|
& CPER_ARM_ERR_TRANSACTION_MASK);
|
|
if (trans_type < ARRAY_SIZE(arm_err_trans_type_strs)) {
|
|
printk("%stransaction type: %s\n", pfx,
|
|
arm_err_trans_type_strs[trans_type]);
|
|
}
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_OPERATION_TYPE) {
|
|
op_type = ((error_info >> CPER_ARM_ERR_OPERATION_SHIFT)
|
|
& CPER_ARM_ERR_OPERATION_MASK);
|
|
switch (type) {
|
|
case CPER_ARM_CACHE_ERROR:
|
|
if (op_type < ARRAY_SIZE(arm_cache_err_op_strs)) {
|
|
printk("%soperation type: %s\n", pfx,
|
|
arm_cache_err_op_strs[op_type]);
|
|
}
|
|
break;
|
|
case CPER_ARM_TLB_ERROR:
|
|
if (op_type < ARRAY_SIZE(arm_tlb_err_op_strs)) {
|
|
printk("%soperation type: %s\n", pfx,
|
|
arm_tlb_err_op_strs[op_type]);
|
|
}
|
|
break;
|
|
case CPER_ARM_BUS_ERROR:
|
|
if (op_type < ARRAY_SIZE(arm_bus_err_op_strs)) {
|
|
printk("%soperation type: %s\n", pfx,
|
|
arm_bus_err_op_strs[op_type]);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_LEVEL) {
|
|
level = ((error_info >> CPER_ARM_ERR_LEVEL_SHIFT)
|
|
& CPER_ARM_ERR_LEVEL_MASK);
|
|
switch (type) {
|
|
case CPER_ARM_CACHE_ERROR:
|
|
printk("%scache level: %d\n", pfx, level);
|
|
break;
|
|
case CPER_ARM_TLB_ERROR:
|
|
printk("%sTLB level: %d\n", pfx, level);
|
|
break;
|
|
case CPER_ARM_BUS_ERROR:
|
|
printk("%saffinity level at which the bus error occurred: %d\n",
|
|
pfx, level);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_PROC_CONTEXT_CORRUPT) {
|
|
proc_context_corrupt = ((error_info >> CPER_ARM_ERR_PC_CORRUPT_SHIFT)
|
|
& CPER_ARM_ERR_PC_CORRUPT_MASK);
|
|
if (proc_context_corrupt)
|
|
printk("%sprocessor context corrupted\n", pfx);
|
|
else
|
|
printk("%sprocessor context not corrupted\n", pfx);
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_CORRECTED) {
|
|
corrected = ((error_info >> CPER_ARM_ERR_CORRECTED_SHIFT)
|
|
& CPER_ARM_ERR_CORRECTED_MASK);
|
|
if (corrected)
|
|
printk("%sthe error has been corrected\n", pfx);
|
|
else
|
|
printk("%sthe error has not been corrected\n", pfx);
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_PRECISE_PC) {
|
|
precise_pc = ((error_info >> CPER_ARM_ERR_PRECISE_PC_SHIFT)
|
|
& CPER_ARM_ERR_PRECISE_PC_MASK);
|
|
if (precise_pc)
|
|
printk("%sPC is precise\n", pfx);
|
|
else
|
|
printk("%sPC is imprecise\n", pfx);
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_RESTARTABLE_PC) {
|
|
restartable_pc = ((error_info >> CPER_ARM_ERR_RESTARTABLE_PC_SHIFT)
|
|
& CPER_ARM_ERR_RESTARTABLE_PC_MASK);
|
|
if (restartable_pc)
|
|
printk("%sProgram execution can be restarted reliably at the PC associated with the error.\n", pfx);
|
|
}
|
|
|
|
/* The rest of the fields are specific to bus errors */
|
|
if (type != CPER_ARM_BUS_ERROR)
|
|
return;
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_PARTICIPATION_TYPE) {
|
|
participation_type = ((error_info >> CPER_ARM_ERR_PARTICIPATION_TYPE_SHIFT)
|
|
& CPER_ARM_ERR_PARTICIPATION_TYPE_MASK);
|
|
if (participation_type < ARRAY_SIZE(arm_bus_err_part_type_strs)) {
|
|
printk("%sparticipation type: %s\n", pfx,
|
|
arm_bus_err_part_type_strs[participation_type]);
|
|
}
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_TIME_OUT) {
|
|
time_out = ((error_info >> CPER_ARM_ERR_TIME_OUT_SHIFT)
|
|
& CPER_ARM_ERR_TIME_OUT_MASK);
|
|
if (time_out)
|
|
printk("%srequest timed out\n", pfx);
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_ADDRESS_SPACE) {
|
|
address_space = ((error_info >> CPER_ARM_ERR_ADDRESS_SPACE_SHIFT)
|
|
& CPER_ARM_ERR_ADDRESS_SPACE_MASK);
|
|
if (address_space < ARRAY_SIZE(arm_bus_err_addr_space_strs)) {
|
|
printk("%saddress space: %s\n", pfx,
|
|
arm_bus_err_addr_space_strs[address_space]);
|
|
}
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_MEM_ATTRIBUTES) {
|
|
mem_attributes = ((error_info >> CPER_ARM_ERR_MEM_ATTRIBUTES_SHIFT)
|
|
& CPER_ARM_ERR_MEM_ATTRIBUTES_MASK);
|
|
printk("%smemory access attributes:0x%x\n", pfx, mem_attributes);
|
|
}
|
|
|
|
if (error_info & CPER_ARM_ERR_VALID_ACCESS_MODE) {
|
|
access_mode = ((error_info >> CPER_ARM_ERR_ACCESS_MODE_SHIFT)
|
|
& CPER_ARM_ERR_ACCESS_MODE_MASK);
|
|
if (access_mode)
|
|
printk("%saccess mode: normal\n", pfx);
|
|
else
|
|
printk("%saccess mode: secure\n", pfx);
|
|
}
|
|
}
|
|
|
|
void cper_print_proc_arm(const char *pfx,
|
|
const struct cper_sec_proc_arm *proc)
|
|
{
|
|
int i, len, max_ctx_type;
|
|
struct cper_arm_err_info *err_info;
|
|
struct cper_arm_ctx_info *ctx_info;
|
|
char newpfx[64], infopfx[64];
|
|
|
|
printk("%sMIDR: 0x%016llx\n", pfx, proc->midr);
|
|
|
|
len = proc->section_length - (sizeof(*proc) +
|
|
proc->err_info_num * (sizeof(*err_info)));
|
|
if (len < 0) {
|
|
printk("%ssection length: %d\n", pfx, proc->section_length);
|
|
printk("%ssection length is too small\n", pfx);
|
|
printk("%sfirmware-generated error record is incorrect\n", pfx);
|
|
printk("%sERR_INFO_NUM is %d\n", pfx, proc->err_info_num);
|
|
return;
|
|
}
|
|
|
|
if (proc->validation_bits & CPER_ARM_VALID_MPIDR)
|
|
printk("%sMultiprocessor Affinity Register (MPIDR): 0x%016llx\n",
|
|
pfx, proc->mpidr);
|
|
|
|
if (proc->validation_bits & CPER_ARM_VALID_AFFINITY_LEVEL)
|
|
printk("%serror affinity level: %d\n", pfx,
|
|
proc->affinity_level);
|
|
|
|
if (proc->validation_bits & CPER_ARM_VALID_RUNNING_STATE) {
|
|
printk("%srunning state: 0x%x\n", pfx, proc->running_state);
|
|
printk("%sPower State Coordination Interface state: %d\n",
|
|
pfx, proc->psci_state);
|
|
}
|
|
|
|
snprintf(newpfx, sizeof(newpfx), "%s ", pfx);
|
|
|
|
err_info = (struct cper_arm_err_info *)(proc + 1);
|
|
for (i = 0; i < proc->err_info_num; i++) {
|
|
printk("%sError info structure %d:\n", pfx, i);
|
|
|
|
printk("%snum errors: %d\n", pfx, err_info->multiple_error + 1);
|
|
|
|
if (err_info->validation_bits & CPER_ARM_INFO_VALID_FLAGS) {
|
|
if (err_info->flags & CPER_ARM_INFO_FLAGS_FIRST)
|
|
printk("%sfirst error captured\n", newpfx);
|
|
if (err_info->flags & CPER_ARM_INFO_FLAGS_LAST)
|
|
printk("%slast error captured\n", newpfx);
|
|
if (err_info->flags & CPER_ARM_INFO_FLAGS_PROPAGATED)
|
|
printk("%spropagated error captured\n",
|
|
newpfx);
|
|
if (err_info->flags & CPER_ARM_INFO_FLAGS_OVERFLOW)
|
|
printk("%soverflow occurred, error info is incomplete\n",
|
|
newpfx);
|
|
}
|
|
|
|
printk("%serror_type: %d, %s\n", newpfx, err_info->type,
|
|
err_info->type < ARRAY_SIZE(cper_proc_error_type_strs) ?
|
|
cper_proc_error_type_strs[err_info->type] : "unknown");
|
|
if (err_info->validation_bits & CPER_ARM_INFO_VALID_ERR_INFO) {
|
|
printk("%serror_info: 0x%016llx\n", newpfx,
|
|
err_info->error_info);
|
|
snprintf(infopfx, sizeof(infopfx), "%s ", newpfx);
|
|
cper_print_arm_err_info(infopfx, err_info->type,
|
|
err_info->error_info);
|
|
}
|
|
if (err_info->validation_bits & CPER_ARM_INFO_VALID_VIRT_ADDR)
|
|
printk("%svirtual fault address: 0x%016llx\n",
|
|
newpfx, err_info->virt_fault_addr);
|
|
if (err_info->validation_bits & CPER_ARM_INFO_VALID_PHYSICAL_ADDR)
|
|
printk("%sphysical fault address: 0x%016llx\n",
|
|
newpfx, err_info->physical_fault_addr);
|
|
err_info += 1;
|
|
}
|
|
|
|
ctx_info = (struct cper_arm_ctx_info *)err_info;
|
|
max_ctx_type = ARRAY_SIZE(arm_reg_ctx_strs) - 1;
|
|
for (i = 0; i < proc->context_info_num; i++) {
|
|
int size = sizeof(*ctx_info) + ctx_info->size;
|
|
|
|
printk("%sContext info structure %d:\n", pfx, i);
|
|
if (len < size) {
|
|
printk("%ssection length is too small\n", newpfx);
|
|
printk("%sfirmware-generated error record is incorrect\n", pfx);
|
|
return;
|
|
}
|
|
if (ctx_info->type > max_ctx_type) {
|
|
printk("%sInvalid context type: %d (max: %d)\n",
|
|
newpfx, ctx_info->type, max_ctx_type);
|
|
return;
|
|
}
|
|
printk("%sregister context type: %s\n", newpfx,
|
|
arm_reg_ctx_strs[ctx_info->type]);
|
|
print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, 4,
|
|
(ctx_info + 1), ctx_info->size, 0);
|
|
len -= size;
|
|
ctx_info = (struct cper_arm_ctx_info *)((long)ctx_info + size);
|
|
}
|
|
|
|
if (len > 0) {
|
|
printk("%sVendor specific error info has %u bytes:\n", pfx,
|
|
len);
|
|
print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, 4, ctx_info,
|
|
len, true);
|
|
}
|
|
}
|