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efi: Decode additional IA32/X64 Bus Check fields 

The "Participation Type", "Time Out", and "Address Space" fields are
unique to the IA32/X64 Bus Check structure. Print these fields.

Based on UEFI 2.7 Table 256. IA32/X64 Bus Check Structure

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180504060003.19618-9-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Yazen Ghannam 2018-05-04 07:59:54 +02:00 committed by Ingo Molnar
parent a9c1e3e791
commit c6bc4ac0aa
1 changed files with 44 additions and 0 deletions
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44
drivers/firmware/efi/cper-x86.c
View File

@ -39,6 +39,10 @@
#define CHECK_VALID_RESTARTABLE_IP BIT_ULL(6)
#define CHECK_VALID_OVERFLOW BIT_ULL(7)
#define CHECK_VALID_BUS_PART_TYPE BIT_ULL(8)
#define CHECK_VALID_BUS_TIME_OUT BIT_ULL(9)
#define CHECK_VALID_BUS_ADDR_SPACE BIT_ULL(10)
#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)
@ -49,6 +53,10 @@
#define CHECK_RESTARTABLE_IP BIT_ULL(28)
#define CHECK_OVERFLOW BIT_ULL(29)
#define CHECK_BUS_PART_TYPE(check) (((check) & GENMASK_ULL(31, 30)) >> 30)
#define CHECK_BUS_TIME_OUT BIT_ULL(32)
#define CHECK_BUS_ADDR_SPACE(check) (((check) & GENMASK_ULL(34, 33)) >> 33)
enum err_types {
ERR_TYPE_CACHE = 0,
ERR_TYPE_TLB,
@ -89,6 +97,20 @@ static const char * const ia_check_op_strs[] = {
"snoop",
};
static const char * const ia_check_bus_part_type_strs[] = {
"Local Processor originated request",
"Local Processor responded to request",
"Local Processor observed",
"Generic",
};
static const char * const ia_check_bus_addr_space_strs[] = {
"Memory Access",
"Reserved",
"I/O",
"Other Transaction",
};
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");
@ -139,6 +161,28 @@ static void print_err_info(const char *pfx, u8 err_type, u64 check)
if (validation_bits & CHECK_VALID_OVERFLOW)
print_bool("Overflow", pfx, check, CHECK_OVERFLOW);
if (err_type != ERR_TYPE_BUS)
return;
if (validation_bits & CHECK_VALID_BUS_PART_TYPE) {
u8 part_type = CHECK_BUS_PART_TYPE(check);
printk("%sParticipation Type: %u, %s\n", pfx, part_type,
part_type < ARRAY_SIZE(ia_check_bus_part_type_strs) ?
ia_check_bus_part_type_strs[part_type] : "unknown");
}
if (validation_bits & CHECK_VALID_BUS_TIME_OUT)
print_bool("Time Out", pfx, check, CHECK_BUS_TIME_OUT);
if (validation_bits & CHECK_VALID_BUS_ADDR_SPACE) {
u8 addr_space = CHECK_BUS_ADDR_SPACE(check);
printk("%sAddress Space: %u, %s\n", pfx, addr_space,
addr_space < ARRAY_SIZE(ia_check_bus_addr_space_strs) ?
ia_check_bus_addr_space_strs[addr_space] : "unknown");
}
}
void cper_print_proc_ia(const char *pfx, const struct cper_sec_proc_ia *proc)