| // 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 VALID_PROC_CXT_INFO_NUM(bits)	(((bits) & GENMASK_ULL(13, 8)) >> 8) | 
 |  | 
 | #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_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) | 
 | #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) | 
 |  | 
 | #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) | 
 |  | 
 | #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) | 
 |  | 
 | #define CTX_TYPE_MSR			1 | 
 | #define CTX_TYPE_MMREG			7 | 
 |  | 
 | 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 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 const char * const ia_check_ms_error_type_strs[] = { | 
 | 	"No Error", | 
 | 	"Unclassified", | 
 | 	"Microcode ROM Parity Error", | 
 | 	"External Error", | 
 | 	"FRC Error", | 
 | 	"Internal Unclassified", | 
 | }; | 
 |  | 
 | static const char * const ia_reg_ctx_strs[] = { | 
 | 	"Unclassified Data", | 
 | 	"MSR Registers (Machine Check and other MSRs)", | 
 | 	"32-bit Mode Execution Context", | 
 | 	"64-bit Mode Execution Context", | 
 | 	"FXSAVE Context", | 
 | 	"32-bit Mode Debug Registers (DR0-DR7)", | 
 | 	"64-bit Mode Debug Registers (DR0-DR7)", | 
 | 	"Memory Mapped Registers", | 
 | }; | 
 |  | 
 | 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 print_err_info_ms(pfx, validation_bits, check); | 
 |  | 
 | 	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); | 
 |  | 
 | 	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) | 
 | { | 
 | 	int i; | 
 | 	struct cper_ia_err_info *err_info; | 
 | 	struct cper_ia_proc_ctx *ctx_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++; | 
 | 	} | 
 |  | 
 | 	ctx_info = (struct cper_ia_proc_ctx *)err_info; | 
 | 	for (i = 0; i < VALID_PROC_CXT_INFO_NUM(proc->validation_bits); i++) { | 
 | 		int size = sizeof(*ctx_info) + ctx_info->reg_arr_size; | 
 | 		int groupsize = 4; | 
 |  | 
 | 		printk("%sContext Information Structure %d:\n", pfx, i); | 
 |  | 
 | 		printk("%sRegister Context Type: %s\n", newpfx, | 
 | 		       ctx_info->reg_ctx_type < ARRAY_SIZE(ia_reg_ctx_strs) ? | 
 | 		       ia_reg_ctx_strs[ctx_info->reg_ctx_type] : "unknown"); | 
 |  | 
 | 		printk("%sRegister Array Size: 0x%04x\n", newpfx, | 
 | 		       ctx_info->reg_arr_size); | 
 |  | 
 | 		if (ctx_info->reg_ctx_type == CTX_TYPE_MSR) { | 
 | 			groupsize = 8; /* MSRs are 8 bytes wide. */ | 
 | 			printk("%sMSR Address: 0x%08x\n", newpfx, | 
 | 			       ctx_info->msr_addr); | 
 | 		} | 
 |  | 
 | 		if (ctx_info->reg_ctx_type == CTX_TYPE_MMREG) { | 
 | 			printk("%sMM Register Address: 0x%016llx\n", newpfx, | 
 | 			       ctx_info->mm_reg_addr); | 
 | 		} | 
 |  | 
 | 		printk("%sRegister Array:\n", newpfx); | 
 | 		print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, groupsize, | 
 | 			       (ctx_info + 1), ctx_info->reg_arr_size, 0); | 
 |  | 
 | 		ctx_info = (struct cper_ia_proc_ctx *)((long)ctx_info + size); | 
 | 	} | 
 | } |