efi: Decode IA32/X64 MS Check structure (a32bc29e) · Commits · 戴 / test

drivers/firmware/efi/cper-x86.c

+54 −1

Original line number	Diff line number	Diff line
		@@ -57,6 +57,20 @@
		#define CHECK_BUS_TIME_OUT BIT_ULL(32)
		#define CHECK_BUS_ADDR_SPACE(check) (((check) & GENMASK_ULL(34, 33)) >> 33)

		#define CHECK_VALID_MS_ERR_TYPE BIT_ULL(0)
		#define CHECK_VALID_MS_PCC BIT_ULL(1)
		#define CHECK_VALID_MS_UNCORRECTED BIT_ULL(2)
		#define CHECK_VALID_MS_PRECISE_IP BIT_ULL(3)
		#define CHECK_VALID_MS_RESTARTABLE_IP BIT_ULL(4)
		#define CHECK_VALID_MS_OVERFLOW BIT_ULL(5)

		#define CHECK_MS_ERR_TYPE(check) (((check) & GENMASK_ULL(18, 16)) >> 16)
		#define CHECK_MS_PCC BIT_ULL(19)
		#define CHECK_MS_UNCORRECTED BIT_ULL(20)
		#define CHECK_MS_PRECISE_IP BIT_ULL(21)
		#define CHECK_MS_RESTARTABLE_IP BIT_ULL(22)
		#define CHECK_MS_OVERFLOW BIT_ULL(23)

		enum err_types {
		ERR_TYPE_CACHE = 0,
		ERR_TYPE_TLB,
		@@ -111,17 +125,56 @@ static const char * const ia_check_bus_addr_space_strs[] = {
		"Other Transaction",
		};

		static const char * const ia_check_ms_error_type_strs[] = {
		"No Error",
		"Unclassified",
		"Microcode ROM Parity Error",
		"External Error",
		"FRC Error",
		"Internal Unclassified",
		};

		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_ms(const char *pfx, u16 validation_bits, u64 check)
		{
		if (validation_bits & CHECK_VALID_MS_ERR_TYPE) {
		u8 err_type = CHECK_MS_ERR_TYPE(check);

		printk("%sError Type: %u, %s\n", pfx, err_type,
		err_type < ARRAY_SIZE(ia_check_ms_error_type_strs) ?
		ia_check_ms_error_type_strs[err_type] : "unknown");
		}

		if (validation_bits & CHECK_VALID_MS_PCC)
		print_bool("Processor Context Corrupt", pfx, check, CHECK_MS_PCC);

		if (validation_bits & CHECK_VALID_MS_UNCORRECTED)
		print_bool("Uncorrected", pfx, check, CHECK_MS_UNCORRECTED);

		if (validation_bits & CHECK_VALID_MS_PRECISE_IP)
		print_bool("Precise IP", pfx, check, CHECK_MS_PRECISE_IP);

		if (validation_bits & CHECK_VALID_MS_RESTARTABLE_IP)
		print_bool("Restartable IP", pfx, check, CHECK_MS_RESTARTABLE_IP);

		if (validation_bits & CHECK_VALID_MS_OVERFLOW)
		print_bool("Overflow", pfx, check, CHECK_MS_OVERFLOW);
		}

		static void print_err_info(const char *pfx, u8 err_type, u64 check)
		{
		u16 validation_bits = CHECK_VALID_BITS(check);

		/*
		* The MS Check structure varies a lot from the others, so use a
		* separate function for decoding.
		*/
		if (err_type == ERR_TYPE_MS)
		return;
		return print_err_info_ms(pfx, validation_bits, check);

		if (validation_bits & CHECK_VALID_TRANS_TYPE) {
		u8 trans_type = CHECK_TRANS_TYPE(check);

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