83 static void dmi_table(u8 *buf,  in dmi_table()  argument
87 	u8 *data = buf;  in dmi_table()
97 	       (data - buf + sizeof(struct dmi_header)) <= dmi_len) {  in dmi_table()
106 		while ((data - buf < dmi_len - 1) && (data[0] || data[1]))  in dmi_table()
108 		if (data - buf < dmi_len - 1)  in dmi_table()
132 	u8 *buf;  in dmi_walk_early()  local
134 	buf = dmi_early_remap(dmi_base, dmi_len);  in dmi_walk_early()
135 	if (buf == NULL)  in dmi_walk_early()
138 	dmi_table(buf, decode, NULL);  in dmi_walk_early()
140 	add_device_randomness(buf, dmi_len);  in dmi_walk_early()
142 	dmi_early_unmap(buf, dmi_len);  in dmi_walk_early()
146 static int __init dmi_checksum(const u8 *buf, u8 len)  in dmi_checksum()  argument
152 		sum += buf[a];  in dmi_checksum()
432 static int __init print_filtered(char *buf, size_t len, const char *info)  in print_filtered()  argument
442 			c += scnprintf(buf + c, len - c, "%c", *p);  in print_filtered()
444 			c += scnprintf(buf + c, len - c, "\\x%02x", *p & 0xff);  in print_filtered()
448 static void __init dmi_format_ids(char *buf, size_t len)  in dmi_format_ids()  argument
453 	c += print_filtered(buf + c, len - c,  in dmi_format_ids()
455 	c += scnprintf(buf + c, len - c, " ");  in dmi_format_ids()
456 	c += print_filtered(buf + c, len - c,  in dmi_format_ids()
461 		c += scnprintf(buf + c, len - c, "/");  in dmi_format_ids()
462 		c += print_filtered(buf + c, len - c, board);  in dmi_format_ids()
464 	c += scnprintf(buf + c, len - c, ", BIOS ");  in dmi_format_ids()
465 	c += print_filtered(buf + c, len - c,  in dmi_format_ids()
467 	c += scnprintf(buf + c, len - c, " ");  in dmi_format_ids()
468 	c += print_filtered(buf + c, len - c,  in dmi_format_ids()
479 static int __init dmi_present(const u8 *buf)  in dmi_present()  argument
483 	if (memcmp(buf, "_SM_", 4) == 0 &&  in dmi_present()
484 	    buf[5] < 32 && dmi_checksum(buf, buf[5])) {  in dmi_present()
485 		smbios_ver = get_unaligned_be16(buf + 6);  in dmi_present()
504 	buf += 16;  in dmi_present()
506 	if (memcmp(buf, "_DMI_", 5) == 0 && dmi_checksum(buf, 15)) {  in dmi_present()
510 			dmi_ver = (buf[14] & 0xF0) << 4 | (buf[14] & 0x0F);  in dmi_present()
511 		dmi_num = get_unaligned_le16(buf + 12);  in dmi_present()
512 		dmi_len = get_unaligned_le16(buf + 6);  in dmi_present()
513 		dmi_base = get_unaligned_le32(buf + 8);  in dmi_present()
537 static int __init dmi_smbios3_present(const u8 *buf)  in dmi_smbios3_present()  argument
539 	if (memcmp(buf, "_SM3_", 5) == 0 &&  in dmi_smbios3_present()
540 	    buf[6] < 32 && dmi_checksum(buf, buf[6])) {  in dmi_smbios3_present()
541 		dmi_ver = get_unaligned_be32(buf + 6);  in dmi_smbios3_present()
544 		dmi_len = get_unaligned_le32(buf + 12);  in dmi_smbios3_present()
545 		dmi_base = get_unaligned_le64(buf + 16);  in dmi_smbios3_present()
562 	char buf[32];  in dmi_scan_machine()  local
582 			memcpy_fromio(buf, p, 32);  in dmi_scan_machine()
585 			if (!dmi_smbios3_present(buf)) {  in dmi_scan_machine()
600 		memcpy_fromio(buf, p, 32);  in dmi_scan_machine()
603 		if (!dmi_present(buf)) {  in dmi_scan_machine()
619 		memset(buf, 0, 16);  in dmi_scan_machine()
621 			memcpy_fromio(buf + 16, q, 16);  in dmi_scan_machine()
622 			if (!dmi_smbios3_present(buf) || !dmi_present(buf)) {  in dmi_scan_machine()
627 			memcpy(buf, buf + 16, 16);  in dmi_scan_machine()
896 	u8 *buf;  in dmi_walk()  local
901 	buf = dmi_remap(dmi_base, dmi_len);  in dmi_walk()
902 	if (buf == NULL)  in dmi_walk()
905 	dmi_table(buf, decode, private_data);  in dmi_walk()
907 	dmi_unmap(buf);  in dmi_walk()