xref: /illumos-gate/usr/src/uts/common/sys/smbios_impl.h (revision 8d0c3d29bb99f6521f2dc5058a7e4debebad7899)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*
28  * This header file defines the implementation structures for the SMBIOS access
29  * library, libsmbios, and an equivalent kernel module.  Clients should use
30  * the <smbios.h> or <sys/smbios.h> header files to access DMTF SMBIOS
31  * information, NOT these underlying implementation structures from the spec.
32  * In short, do not user this header file or these routines for any purpose.
33  */
34 
35 #ifndef	_SYS_SMBIOS_IMPL_H
36 #define	_SYS_SMBIOS_IMPL_H
37 
38 #include <sys/smbios.h>
39 #include <sys/sysmacros.h>
40 
41 #ifdef _KERNEL
42 #include <sys/systm.h>
43 #else
44 #include <strings.h>
45 #include <stddef.h>
46 #endif
47 
48 #ifdef	__cplusplus
49 extern "C" {
50 #endif
51 
52 #pragma pack(1)
53 
54 typedef struct smb_header {
55 	uint8_t smbh_type;		/* structure type (SMB_TYPE_* value) */
56 	uint8_t smbh_len;		/* length in bytes of formatted area */
57 	uint16_t smbh_hdl;		/* structure handle */
58 } smb_header_t;
59 
60 typedef struct smb_bios {
61 	smb_header_t smbbi_hdr;		/* structure header */
62 	uint8_t smbbi_vendor;		/* bios vendor string */
63 	uint8_t smbbi_version;		/* bios version string */
64 	uint16_t smbbi_segment;		/* segment location of bios address */
65 	uint8_t smbbi_reldate;		/* bios release date */
66 	uint8_t smbbi_romsize;		/* bios rom size (64k * (n + 1)) */
67 	uint64_t smbbi_cflags;		/* bios characteristics */
68 	uint8_t smbbi_xcflags[1];	/* bios characteristics extensions */
69 } smb_bios_t;
70 
71 typedef struct smb_system {
72 	smb_header_t smbsi_hdr;		/* structure header */
73 	uint8_t smbsi_manufacturer;	/* manufacturer */
74 	uint8_t smbsi_product;		/* product name */
75 	uint8_t smbsi_version;		/* version */
76 	uint8_t smbsi_serial;		/* serial number */
77 	uint8_t smbsi_uuid[16];		/* UUID */
78 	uint8_t smbsi_wakeup;		/* wake-up type */
79 	uint8_t smbsi_sku;		/* SKU number */
80 	uint8_t smbsi_family;		/* family */
81 } smb_system_t;
82 
83 typedef struct smb_bboard {
84 	smb_header_t smbbb_hdr;		/* structure header */
85 	uint8_t smbbb_manufacturer;	/* manufacturer */
86 	uint8_t smbbb_product;		/* product name */
87 	uint8_t smbbb_version;		/* version */
88 	uint8_t smbbb_serial;		/* serial number */
89 	uint8_t smbbb_asset;		/* asset tag */
90 	uint8_t smbbb_flags;		/* feature flags */
91 	uint8_t smbbb_location;		/* location in chassis */
92 	uint16_t smbbb_chassis;		/* chassis handle */
93 	uint8_t smbbb_type;		/* board type */
94 	uint8_t smbbb_cn;		/* number of contained handles */
95 	uint16_t smbbb_cv[1];		/* array of contained handles */
96 } smb_bboard_t;
97 
98 typedef struct smb_chassis {
99 	smb_header_t smbch_hdr;		/* structure header */
100 	uint8_t smbch_manufacturer;	/* manufacturer */
101 	uint8_t smbch_type;		/* type */
102 	uint8_t smbch_version;		/* version */
103 	uint8_t smbch_serial;		/* serial number */
104 	uint8_t smbch_asset;		/* asset tag */
105 	uint8_t smbch_bustate;		/* boot-up state */
106 	uint8_t smbch_psstate;		/* power supply state */
107 	uint8_t smbch_thstate;		/* thermal state */
108 	uint8_t smbch_security;		/* security state */
109 	uint32_t smbch_oemdata;		/* OEM-specific data */
110 	uint8_t smbch_uheight;		/* enclosure height */
111 	uint8_t smbch_cords;		/* number of power cords */
112 	uint8_t smbch_cn;		/* number of contained records */
113 	uint8_t smbch_cm;		/* size of contained records */
114 	uint8_t smbch_cv[1];		/* array of contained records */
115 } smb_chassis_t;
116 
117 #define	SMB_CHT_LOCK	0x80		/* lock bit within smbch_type */
118 
119 typedef struct smb_processor {
120 	smb_header_t smbpr_hdr;		/* structure header */
121 	uint8_t smbpr_socket;		/* socket designation */
122 	uint8_t smbpr_type;		/* processor type (see <smbios.h>) */
123 	uint8_t smbpr_family;		/* processor family (see <smbios.h>) */
124 	uint8_t smbpr_manufacturer;	/* manufacturer */
125 	uint64_t smbpr_cpuid;		/* processor cpuid information */
126 	uint8_t smbpr_version;		/* version */
127 	uint8_t smbpr_voltage;		/* voltage */
128 	uint16_t smbpr_clkspeed;	/* external clock speed in MHz */
129 	uint16_t smbpr_maxspeed;	/* maximum speed in MHz */
130 	uint16_t smbpr_curspeed;	/* current speed in MHz */
131 	uint8_t smbpr_status;		/* status (see <smbios.h>) */
132 	uint8_t smbpr_upgrade;		/* upgrade */
133 	uint16_t smbpr_l1cache;		/* L1 cache handle (if any) */
134 	uint16_t smbpr_l2cache;		/* L2 cache handle (if any) */
135 	uint16_t smbpr_l3cache;		/* L3 cache handle (if any) */
136 	uint8_t smbpr_serial;		/* serial number */
137 	uint8_t smbpr_asset;		/* asset tag */
138 	uint8_t smbpr_part;		/* part number */
139 } smb_processor_t;
140 
141 typedef struct smb_cache {
142 	smb_header_t smbca_hdr;		/* structure header */
143 	uint8_t smbca_socket;		/* socket designation */
144 	uint16_t smbca_config;		/* cache configuration */
145 	uint16_t smbca_maxsize;		/* maximum installed size */
146 	uint16_t smbca_size;		/* installed size */
147 	uint16_t smbca_stype;		/* supported SRAM type */
148 	uint16_t smbca_ctype;		/* current SRAM type */
149 	uint8_t smbca_speed;		/* speed in nanoseconds */
150 	uint8_t smbca_etype;		/* error correction type */
151 	uint8_t smbca_ltype;		/* logical cache type */
152 	uint8_t smbca_assoc;		/* associativity */
153 } smb_cache_t;
154 
155 /*
156  * Convert encoded cache size to bytes: DSP0134 Section 3.3.8 explains the
157  * encoding.  The highest bit is 0 for 1k units, 1 for 64k units, and this
158  * macro decodes the value into bytes for exporting to our clients.
159  */
160 #define	SMB_CACHE_SIZE(s)	(((s) & 0x8000) ? \
161 	((uint32_t)((s) & 0x7FFF) * 64 * 1024) : ((uint32_t)(s) * 1024))
162 
163 #define	SMB_CACHE_CFG_MODE(c)		(((c) >> 8) & 3)
164 #define	SMB_CACHE_CFG_ENABLED(c)	(((c) >> 7) & 1)
165 #define	SMB_CACHE_CFG_LOCATION(c)	(((c) >> 5) & 3)
166 #define	SMB_CACHE_CFG_SOCKETED(c)	(((c) >> 3) & 1)
167 #define	SMB_CACHE_CFG_LEVEL(c)		(((c) & 7) + 1)
168 
169 typedef struct smb_port {
170 	smb_header_t smbpo_hdr;		/* structure header */
171 	uint8_t smbpo_iref;		/* internal reference designator */
172 	uint8_t smbpo_itype;		/* internal connector type */
173 	uint8_t smbpo_eref;		/* external reference designator */
174 	uint8_t smbpo_etype;		/* external connector type */
175 	uint8_t smbpo_ptype;		/* port type */
176 } smb_port_t;
177 
178 typedef struct smb_slot {
179 	smb_header_t smbsl_hdr;		/* structure header */
180 	uint8_t smbsl_name;		/* reference designation */
181 	uint8_t smbsl_type;		/* slot type */
182 	uint8_t smbsl_width;		/* slot data bus width */
183 	uint8_t smbsl_usage;		/* current usage */
184 	uint8_t smbsl_length;		/* slot length */
185 	uint16_t smbsl_id;		/* slot ID */
186 	uint8_t smbsl_ch1;		/* slot characteristics 1 */
187 	uint8_t smbsl_ch2;		/* slot characteristics 2 */
188 	uint16_t smbsl_sg;		/* segment group number */
189 	uint8_t smbsl_bus;		/* bus number */
190 	uint8_t smbsl_df;		/* device/function number */
191 } smb_slot_t;
192 
193 typedef struct smb_obdev {
194 	uint8_t smbob_type;		/* encoded type and enable bit */
195 	uint8_t smbob_name;		/* descriptiong string */
196 } smb_obdev_t;
197 
198 #define	SMB_OBT_ENABLED		0x80	/* enable bit within smbob_type */
199 
200 typedef struct smb_strtab {
201 	smb_header_t smbtb_hdr;		/* structure header */
202 	uint8_t smbtb_count;		/* number of strings */
203 } smb_strtab_t;
204 
205 typedef struct smb_lang {
206 	smb_header_t smblang_hdr;	/* structure header */
207 	uint8_t smblang_num;		/* number of installed languages */
208 	uint8_t smblang_flags;		/* flags */
209 	uint8_t smblang_resv[15];	/* reserved for future use */
210 	uint8_t smblang_cur;		/* current language string */
211 } smb_lang_t;
212 
213 typedef struct smb_sel {
214 	smb_header_t smbsel_hdr;	/* structure header */
215 	uint16_t smbsel_len;		/* log area length */
216 	uint16_t smbsel_hdroff;		/* header offset */
217 	uint16_t smbsel_dataoff;	/* data offset */
218 	uint8_t smbsel_method;		/* access method */
219 	uint8_t smbsel_status;		/* status flags */
220 	uint32_t smbsel_token;		/* change token */
221 	uint32_t smbsel_addr;		/* access method address */
222 	uint8_t smbsel_format;		/* header format */
223 	uint8_t smbsel_typec;		/* number of type descriptors */
224 	uint8_t smbsel_typesz;		/* size of each type descriptor */
225 	uint8_t smbsel_typev[1];	/* array of type descriptors */
226 } smb_sel_t;
227 
228 typedef struct smb_memarray {
229 	smb_header_t smbmarr_hdr;	/* structure header */
230 	uint8_t smbmarr_loc;		/* location */
231 	uint8_t smbmarr_use;		/* use */
232 	uint8_t smbmarr_ecc;		/* error detect/correct mechanism */
233 	uint32_t smbmarr_cap;		/* maximum capacity */
234 	uint16_t smbmarr_err;		/* error handle */
235 	uint16_t smbmarr_ndevs;		/* number of slots or sockets */
236 } smb_memarray_t;
237 
238 typedef struct smb_memarrmap {
239 	smb_header_t smbamap_hdr;	/* structure header */
240 	uint32_t smbamap_start;		/* starting address in kilobytes */
241 	uint32_t smbamap_end;		/* ending address in kilobytes */
242 	uint16_t smbamap_array;		/* physical memory array handle */
243 	uint8_t smbamap_width;		/* partition width */
244 } smb_memarrmap_t;
245 
246 typedef struct smb_memdevice {
247 	smb_header_t smbmdev_hdr;	/* structure header */
248 	uint16_t smbmdev_array;		/* array handle */
249 	uint16_t smbmdev_error;		/* error handle */
250 	uint16_t smbmdev_twidth;	/* total width */
251 	uint16_t smbmdev_dwidth;	/* data width */
252 	uint16_t smbmdev_size;		/* size in either K or MB */
253 	uint8_t smbmdev_form;		/* form factor */
254 	uint8_t smbmdev_set;		/* device set */
255 	uint8_t smbmdev_dloc;		/* device locator */
256 	uint8_t smbmdev_bloc;		/* bank locator */
257 	uint8_t smbmdev_type;		/* memory type */
258 	uint16_t smbmdev_flags;		/* detail flags */
259 	uint16_t smbmdev_speed;		/* speed in MHz */
260 	uint8_t smbmdev_manufacturer;	/* manufacturer */
261 	uint8_t smbmdev_serial;		/* serial number */
262 	uint8_t smbmdev_asset;		/* asset tag */
263 	uint8_t smbmdev_part;		/* part number */
264 } smb_memdevice_t;
265 
266 #define	SMB_MDS_KBYTES		0x8000	/* size in specified in kilobytes */
267 
268 typedef struct smb_memdevmap {
269 	smb_header_t smbdmap_hdr;	/* structure header */
270 	uint32_t smbdmap_start;		/* starting address in kilobytes */
271 	uint32_t smbdmap_end;		/* ending address in kilobytes */
272 	uint16_t smbdmap_device;	/* memory device handle */
273 	uint16_t smbdmap_array;		/* memory array mapped address handle */
274 	uint8_t smbdmap_rpos;		/* row position */
275 	uint8_t smbdmap_ipos;		/* interleave position */
276 	uint8_t smbdmap_idepth;		/* interleave depth */
277 } smb_memdevmap_t;
278 
279 typedef struct smb_battery {
280 	smb_header_t smbbat_hdr;	/* structure header */
281 	uint8_t smbbat_loc;		/* location */
282 	uint8_t smbbat_manufacturer;	/* manufacturer */
283 	uint8_t smbbat_date;		/* manufacture date */
284 	uint8_t smbbat_serial;		/* serial number */
285 	uint8_t smbbat_devname;		/* device name */
286 	uint8_t smbbat_chem;		/* device chemistry */
287 	uint16_t smbbat_cap;		/* design capacity in mW hours */
288 	uint16_t smbbat_volt;		/* design voltage in mV */
289 	uint8_t smbbat_version;		/* SBDS version string */
290 	uint8_t smbbat_err;		/* error percentage */
291 	uint16_t smbbat_ssn;		/* SBDS serial number */
292 	uint16_t smbbat_sdate;		/* SBDS manufacture date */
293 	uint8_t smbbat_schem;		/* SBDS chemistry string */
294 	uint8_t smbbat_mult;		/* design capacity multiplier */
295 	uint32_t smbbat_oemdata;	/* OEM-specific data */
296 } smb_battery_t;
297 
298 typedef struct smb_hwsec {
299 	smb_header_t smbhs_hdr;		/* structure header */
300 	uint8_t smbhs_settings;		/* settings byte */
301 } smb_hwsec_t;
302 
303 #define	SMB_HWS_PWR_PS(x)	(((x) & 0xC0) >> 6)
304 #define	SMB_HWS_KBD_PS(x)	(((x) & 0x30) >> 4)
305 #define	SMB_HWS_ADM_PS(x)	(((x) & 0x0C) >> 2)
306 #define	SMB_HWS_PAN_PS(x)	(((x) & 0x03) >> 0)
307 
308 typedef struct smb_boot {
309 	smb_header_t smbbo_hdr;		/* structure header */
310 	uint8_t smbbo_pad[6];		/* reserved for future use */
311 	uint8_t smbbo_status[1];	/* variable-length status buffer */
312 } smb_boot_t;
313 
314 typedef struct smb_ipmi {
315 	smb_header_t smbipm_hdr;	/* structure header */
316 	uint8_t smbipm_type;		/* interface type */
317 	uint8_t smbipm_spec;		/* specification revision */
318 	uint8_t smbipm_i2c;		/* i2C slave address */
319 	uint8_t smbipm_bus;		/* NV storage device bus ID */
320 	uint64_t smbipm_addr;		/* base address */
321 	uint8_t smbipm_info;		/* base address modifier/intr info */
322 	uint8_t smbipm_intr;		/* interrupt number */
323 } smb_ipmi_t;
324 
325 #define	SMB_IPM_SPEC_MAJOR(x)	(((x) & 0xF0) >> 4)
326 #define	SMB_IPM_SPEC_MINOR(x)	((x) & 0x0F)
327 
328 #define	SMB_IPM_ADDR_IO		1ULL
329 
330 #define	SMB_IPM_INFO_REGS(x)	(((x) & 0xC0) >> 6)
331 #define	SMB_IPM_INFO_LSB(x)	(((x) & 0x10) >> 4)
332 #define	SMB_IPM_INFO_ISPEC(x)	(((x) & 0x08) >> 3)
333 #define	SMB_IPM_INFO_IPOL(x)	(((x) & 0x02) >> 1)
334 #define	SMB_IPM_INFO_IMODE(x)	(((x) & 0x01) >> 0)
335 
336 #define	SMB_IPM_REGS_1B		0
337 #define	SMB_IPM_REGS_4B		1
338 #define	SMB_IPM_REGS_16B	2
339 
340 #define	SMB_IPM_IPOL_LO		0
341 #define	SMB_IPM_IPOL_HI		1
342 
343 #define	SMB_IPM_IMODE_EDGE	0
344 #define	SMB_IPM_IMODE_LEVEL	1
345 
346 typedef struct smb_powersup {
347 	smb_header_t smbpsup_hdr;	/* structure header */
348 	uint8_t smbpsup_group;		/* group id */
349 	uint8_t smbpsup_loc;		/* location tag */
350 	uint8_t smbpsup_devname;	/* device name */
351 	uint8_t smbpsup_manufacturer;	/* manufacturer */
352 	uint8_t smbpsup_serial;		/* serial number */
353 	uint8_t smbpsup_asset;		/* asset tag */
354 	uint8_t smbpsup_part;		/* part number */
355 	uint8_t smbpsup_rev;		/* revision string */
356 	uint16_t smbpsup_max;		/* max output in milliwatts */
357 	uint16_t smbpsup_char;		/* characteristics */
358 	uint16_t smbpsup_vprobe;	/* voltage probe handle */
359 	uint16_t smbpsup_cooldev;	/* cooling device handle */
360 	uint16_t smbpsup_iprobe;	/* current probe handle */
361 } smb_powersup_t;
362 
363 typedef struct smb_obdev_ext {
364 	smb_header_t smbobe_hdr;	/* structure header */
365 	uint8_t smbobe_name;		/* reference designation */
366 	uint8_t smbobe_dtype;		/* device type */
367 	uint8_t smbobe_dti;		/* device type instance */
368 	uint16_t smbobe_sg;		/* segment group number */
369 	uint8_t smbobe_bus;		/* bus number */
370 	uint8_t smbobe_df;		/* device/function number */
371 } smb_obdev_ext_t;
372 
373 typedef struct smb_processor_ext {
374 	smb_header_t smbpre_hdr;	/* structure header */
375 	uint16_t smbpre_processor;	/* processor handle */
376 	uint8_t smbpre_fru;		/* FRU indicator */
377 	uint8_t smbpre_n;		/* number of APIC IDs */
378 	uint16_t smbpre_apicid[1];	/* strand initial apic id */
379 } smb_processor_ext_t;
380 
381 typedef struct smb_port_ext {
382 	smb_header_t smbpoe_hdr;	/* structure header */
383 	uint16_t smbpoe_chassis;	/* chassis handle */
384 	uint16_t smbpoe_port;		/* port connector handle */
385 	uint8_t smbpoe_dtype;		/* device type */
386 	uint16_t smbpoe_devhdl;		/* device handle */
387 	uint8_t smbpoe_phy;		/* PHY number */
388 } smb_port_ext_t;
389 
390 typedef struct smb_pciexrc {
391 	smb_header_t smbpciexrc_hdr;	/* structure header */
392 	uint16_t smbpciexrc_bboard;	/* base board handle */
393 	uint16_t smbpciexrc_bdf;	/* PCI Bus/Dev/Func */
394 } smb_pciexrc_t;
395 
396 typedef struct smb_memarray_ext {
397 	smb_header_t smbmarre_hdr;	/* structure header */
398 	uint16_t smbmarre_ma;		/* memory array handle */
399 	uint16_t smbmarre_component;	/* component parent handle */
400 	uint16_t smbmarre_bdf;		/* PCI bus/dev/funct */
401 } smb_memarray_ext_t;
402 
403 typedef struct smb_memdevice_ext {
404 	smb_header_t smbmdeve_hdr;	/* structure header */
405 	uint16_t smbmdeve_mdev;		/* memory device handle */
406 	uint8_t smbmdeve_dchan;		/* DRAM channel */
407 	uint8_t smbmdeve_ncs;		/* number of chip select */
408 	uint8_t smbmdeve_cs[1];		/* chip selects */
409 } smb_memdevice_ext_t;
410 
411 #pragma pack()
412 
413 typedef struct smb_struct {
414 	const smb_header_t *smbst_hdr;	/* address of raw structure data */
415 	const uchar_t *smbst_str;	/* address of string data (if any) */
416 	const uchar_t *smbst_end;	/* address of 0x0000 ending tag */
417 	struct smb_struct *smbst_next; 	/* next structure in hash chain */
418 	uint16_t *smbst_strtab;		/* string index -> offset table */
419 	uint_t smbst_strtablen;		/* length of smbst_strtab */
420 } smb_struct_t;
421 
422 struct smbios_hdl {
423 	smbios_entry_t sh_ent;		/* structure table entry point */
424 	const void *sh_buf;		/* structure table buffer */
425 	size_t sh_buflen;		/* size of structure table buffer */
426 	smb_struct_t *sh_structs;	/* array of structure descriptors */
427 	uint_t sh_nstructs;		/* number of active structures */
428 	smb_struct_t **sh_hash;		/* hash bucket array for descriptors */
429 	uint_t sh_hashlen;		/* hash bucket array length */
430 	int sh_err;			/* error code for smbios_errno() */
431 	int sh_libvers;			/* library client abi version */
432 	int sh_smbvers;			/* derived underlying format version */
433 	uint_t sh_flags;		/* miscellaneous flags (see below) */
434 };
435 
436 #define	SMB_FL_DEBUG	0x1		/* print debug messages for this hdl */
437 #define	SMB_FL_BUFALLOC	0x2		/* sh_buf was allocated by library */
438 
439 #define	SMB_BIOS_DEVICE		"/dev/xsvc"	/* device w/ BIOS physmem */
440 #define	SMB_SMBIOS_DEVICE	"/dev/smbios"	/* device w/ SMBIOS image */
441 
442 #define	SMB_RANGE_START	0xF0000		/* start of physical address range */
443 #define	SMB_RANGE_LIMIT	0xFFFFF		/* limit of physical address range */
444 
445 #define	SMB_MAJMIN(M, m)	((((M) & 0xFF) << 16) | ((m) & 0xFF))
446 #define	SMB_MAJOR(v)		(((v) & 0xFF00) >> 8)
447 #define	SMB_MINOR(v)		(((v) & 0x00FF))
448 
449 #define	ESMB_BASE	1000		/* base value for libsmbios errnos */
450 
451 enum {
452 	ESMB_NOTFOUND = ESMB_BASE,	/* SMBIOS table not found on system */
453 	ESMB_MAPDEV,			/* failed to map SMBIOS table */
454 	ESMB_NOENT,			/* failed to locate structure */
455 	ESMB_NOMEM,			/* failed to allocate memory */
456 	ESMB_NOHDR,			/* failed to read SMBIOS header */
457 	ESMB_NOSTAB,			/* failed to read SMBIOS struct table */
458 	ESMB_NOINFO,			/* no common info for structure */
459 	ESMB_SHORT,			/* buffer length doesn't match header */
460 	ESMB_CORRUPT,			/* buffer struct or len is corrupt */
461 	ESMB_VERSION,			/* version not supported by library */
462 	ESMB_NOTSUP,			/* feature not supported by provider */
463 	ESMB_HEADER,			/* SMBIOS header corrupt or invalid */
464 	ESMB_OLD,			/* SMBIOS version is too old for us */
465 	ESMB_NEW,			/* SMBIOS version is too new for us */
466 	ESMB_CKSUM,			/* SMBIOS header checksum mismatch */
467 	ESMB_INVAL,			/* invalid function call argument */
468 	ESMB_TYPE,			/* structure type mismatch */
469 	ESMB_UNKNOWN			/* unknown error (maximum value tag) */
470 };
471 
472 extern const smb_struct_t *smb_lookup_type(smbios_hdl_t *, uint_t);
473 extern const smb_struct_t *smb_lookup_id(smbios_hdl_t *, uint_t);
474 extern const char *smb_strptr(const smb_struct_t *, uint_t);
475 extern int smb_gteq(smbios_hdl_t *, int);
476 
477 extern int smb_set_errno(smbios_hdl_t *, int);
478 extern smbios_hdl_t *smb_open_error(smbios_hdl_t *, int *, int);
479 extern const char *smb_strerror(int);
480 
481 extern void *smb_alloc(size_t);
482 extern void *smb_zalloc(size_t);
483 extern void smb_free(void *, size_t);
484 
485 extern void smb_dprintf(smbios_hdl_t *, const char *, ...);
486 
487 extern int _smb_debug;
488 
489 #ifdef	__cplusplus
490 }
491 #endif
492 
493 #endif	/* _SYS_SMBIOS_IMPL_H */
494