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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018, Advanced Micro Devices, Inc.
#include <linux/cper.h>
/*
* We don't need a "CPER_IA" prefix since these are all locally defined.
* This will save us a lot of line space.
*/
#define VALID_LAPIC_ID BIT_ULL(0)
#define VALID_CPUID_INFO BIT_ULL(1)
#define VALID_PROC_ERR_INFO_NUM(bits) (((bits) & GENMASK_ULL(7, 2)) >> 2)
#define INFO_ERR_STRUCT_TYPE_CACHE \
GUID_INIT(0xA55701F5, 0xE3EF, 0x43DE, 0xAC, 0x72, 0x24, 0x9B, \
0x57, 0x3F, 0xAD, 0x2C)
#define INFO_ERR_STRUCT_TYPE_TLB \
GUID_INIT(0xFC06B535, 0x5E1F, 0x4562, 0x9F, 0x25, 0x0A, 0x3B, \
0x9A, 0xDB, 0x63, 0xC3)
#define INFO_ERR_STRUCT_TYPE_BUS \
GUID_INIT(0x1CF3F8B3, 0xC5B1, 0x49a2, 0xAA, 0x59, 0x5E, 0xEF, \
0x92, 0xFF, 0xA6, 0x3C)
#define INFO_ERR_STRUCT_TYPE_MS \
GUID_INIT(0x48AB7F57, 0xDC34, 0x4f6c, 0xA7, 0xD3, 0xB0, 0xB5, \
0xB0, 0xA7, 0x43, 0x14)
#define INFO_VALID_CHECK_INFO BIT_ULL(0)
#define INFO_VALID_TARGET_ID BIT_ULL(1)
#define INFO_VALID_REQUESTOR_ID BIT_ULL(2)
#define INFO_VALID_RESPONDER_ID BIT_ULL(3)
#define INFO_VALID_IP BIT_ULL(4)
#define CHECK_VALID_TRANS_TYPE BIT_ULL(0)
#define CHECK_VALID_OPERATION BIT_ULL(1)
#define CHECK_VALID_LEVEL BIT_ULL(2)
#define CHECK_VALID_PCC BIT_ULL(3)
#define CHECK_VALID_UNCORRECTED BIT_ULL(4)
#define CHECK_VALID_PRECISE_IP BIT_ULL(5)
#define CHECK_VALID_RESTARTABLE_IP BIT_ULL(6)
#define CHECK_VALID_OVERFLOW BIT_ULL(7)
#define CHECK_VALID_BITS(check) (((check) & GENMASK_ULL(15, 0)))
#define CHECK_TRANS_TYPE(check) (((check) & GENMASK_ULL(17, 16)) >> 16)
#define CHECK_OPERATION(check) (((check) & GENMASK_ULL(21, 18)) >> 18)
#define CHECK_LEVEL(check) (((check) & GENMASK_ULL(24, 22)) >> 22)
#define CHECK_PCC BIT_ULL(25)
#define CHECK_UNCORRECTED BIT_ULL(26)
#define CHECK_PRECISE_IP BIT_ULL(27)
#define CHECK_RESTARTABLE_IP BIT_ULL(28)
#define CHECK_OVERFLOW BIT_ULL(29)
enum err_types {
ERR_TYPE_CACHE = 0,
ERR_TYPE_TLB,
ERR_TYPE_BUS,
ERR_TYPE_MS,
N_ERR_TYPES
};
static enum err_types cper_get_err_type(const guid_t *err_type)
{
if (guid_equal(err_type, &INFO_ERR_STRUCT_TYPE_CACHE))
return ERR_TYPE_CACHE;
else if (guid_equal(err_type, &INFO_ERR_STRUCT_TYPE_TLB))
return ERR_TYPE_TLB;
else if (guid_equal(err_type, &INFO_ERR_STRUCT_TYPE_BUS))
return ERR_TYPE_BUS;
else if (guid_equal(err_type, &INFO_ERR_STRUCT_TYPE_MS))
return ERR_TYPE_MS;
else
return N_ERR_TYPES;
}
static const char * const ia_check_trans_type_strs[] = {
"Instruction",
"Data Access",
"Generic",
};
static const char * const ia_check_op_strs[] = {
"generic error",
"generic read",
"generic write",
"data read",
"data write",
"instruction fetch",
"prefetch",
"eviction",
"snoop",
};
static inline void print_bool(char *str, const char *pfx, u64 check, u64 bit)
{
printk("%s%s: %s\n", pfx, str, (check & bit) ? "true" : "false");
}
static void print_err_info(const char *pfx, u8 err_type, u64 check)
{
u16 validation_bits = CHECK_VALID_BITS(check);
if (err_type == ERR_TYPE_MS)
return;
if (validation_bits & CHECK_VALID_TRANS_TYPE) {
u8 trans_type = CHECK_TRANS_TYPE(check);
printk("%sTransaction Type: %u, %s\n", pfx, trans_type,
trans_type < ARRAY_SIZE(ia_check_trans_type_strs) ?
ia_check_trans_type_strs[trans_type] : "unknown");
}
if (validation_bits & CHECK_VALID_OPERATION) {
u8 op = CHECK_OPERATION(check);
/*
* CACHE has more operation types than TLB or BUS, though the
* name and the order are the same.
*/
u8 max_ops = (err_type == ERR_TYPE_CACHE) ? 9 : 7;
printk("%sOperation: %u, %s\n", pfx, op,
op < max_ops ? ia_check_op_strs[op] : "unknown");
}
if (validation_bits & CHECK_VALID_LEVEL)
printk("%sLevel: %llu\n", pfx, CHECK_LEVEL(check));
if (validation_bits & CHECK_VALID_PCC)
print_bool("Processor Context Corrupt", pfx, check, CHECK_PCC);
if (validation_bits & CHECK_VALID_UNCORRECTED)
print_bool("Uncorrected", pfx, check, CHECK_UNCORRECTED);
if (validation_bits & CHECK_VALID_PRECISE_IP)
print_bool("Precise IP", pfx, check, CHECK_PRECISE_IP);
if (validation_bits & CHECK_VALID_RESTARTABLE_IP)
print_bool("Restartable IP", pfx, check, CHECK_RESTARTABLE_IP);
if (validation_bits & CHECK_VALID_OVERFLOW)
print_bool("Overflow", pfx, check, CHECK_OVERFLOW);
}
void cper_print_proc_ia(const char *pfx, const struct cper_sec_proc_ia *proc)
{
int i;
struct cper_ia_err_info *err_info;
char newpfx[64], infopfx[64];
u8 err_type;
if (proc->validation_bits & VALID_LAPIC_ID)
printk("%sLocal APIC_ID: 0x%llx\n", pfx, proc->lapic_id);
if (proc->validation_bits & VALID_CPUID_INFO) {
printk("%sCPUID Info:\n", pfx);
print_hex_dump(pfx, "", DUMP_PREFIX_OFFSET, 16, 4, proc->cpuid,
sizeof(proc->cpuid), 0);
}
snprintf(newpfx, sizeof(newpfx), "%s ", pfx);
err_info = (struct cper_ia_err_info *)(proc + 1);
for (i = 0; i < VALID_PROC_ERR_INFO_NUM(proc->validation_bits); i++) {
printk("%sError Information Structure %d:\n", pfx, i);
err_type = cper_get_err_type(&err_info->err_type);
printk("%sError Structure Type: %s\n", newpfx,
err_type < ARRAY_SIZE(cper_proc_error_type_strs) ?
cper_proc_error_type_strs[err_type] : "unknown");
if (err_type >= N_ERR_TYPES) {
printk("%sError Structure Type: %pUl\n", newpfx,
&err_info->err_type);
}
if (err_info->validation_bits & INFO_VALID_CHECK_INFO) {
printk("%sCheck Information: 0x%016llx\n", newpfx,
err_info->check_info);
if (err_type < N_ERR_TYPES) {
snprintf(infopfx, sizeof(infopfx), "%s ",
newpfx);
print_err_info(infopfx, err_type,
err_info->check_info);
}
}
if (err_info->validation_bits & INFO_VALID_TARGET_ID) {
printk("%sTarget Identifier: 0x%016llx\n",
newpfx, err_info->target_id);
}
if (err_info->validation_bits & INFO_VALID_REQUESTOR_ID) {
printk("%sRequestor Identifier: 0x%016llx\n",
newpfx, err_info->requestor_id);
}
if (err_info->validation_bits & INFO_VALID_RESPONDER_ID) {
printk("%sResponder Identifier: 0x%016llx\n",
newpfx, err_info->responder_id);
}
if (err_info->validation_bits & INFO_VALID_IP) {
printk("%sInstruction Pointer: 0x%016llx\n",
newpfx, err_info->ip);
}
err_info++;
}
}
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