791 lines
18 KiB
C
791 lines
18 KiB
C
/*
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* Copyright (c) 1995 Andrew McRae. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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/*
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* Code cleanup, bug-fix and extension
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* by Tatsumi Hosokawa <hosokawa@mt.cs.keio.ac.jp>
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*/
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <pccard/cardinfo.h>
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#include <pccard/cis.h>
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#include "readcis.h"
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#ifdef RATOCLAN
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static int rex5588 = 0;
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#endif
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int isdumpcisfile = 0;
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static int read_attr(int, char *, int);
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static int ck_linktarget(int, off_t, int);
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static void cis_info(struct cis *, unsigned char *, int);
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static void device_desc(unsigned char *, int, struct dev_mem *);
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static void config_map(struct cis *, unsigned char *, int);
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static void cis_config(struct cis *, unsigned char *, int);
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static void cis_manuf_id(struct cis *, unsigned char *, int);
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static void cis_func_id(struct cis *, unsigned char *, int);
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static void cis_network_ext(struct cis *, unsigned char *, int);
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static struct tuple_list *read_one_tuplelist(int, int, off_t);
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static struct tuple_list *read_tuples(int);
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static struct tuple *find_tuple_in_list(struct tuple_list *, unsigned char);
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static struct tuple_info *get_tuple_info(unsigned char);
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static struct tuple_info tuple_info[] = {
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{"Null tuple", 0x00, 0},
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{"Common memory descriptor", 0x01, 255},
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{"Long link to next chain for CardBus", 0x02, 255},
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{"Indirect access", 0x03, 255},
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{"Configuration map for CardBus", 0x04, 255},
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{"Configuration entry for CardBus", 0x05, 255},
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{"Long link to next chain for MFC", 0x06, 255},
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{"Base address register for CardBus", 0x07, 6},
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{"Checksum", 0x10, 5},
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{"Long link to attribute memory", 0x11, 4},
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{"Long link to common memory", 0x12, 4},
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{"Link target", 0x13, 3},
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{"No link", 0x14, 0},
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{"Version 1 info", 0x15, 255},
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{"Alternate language string", 0x16, 255},
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{"Attribute memory descriptor", 0x17, 255},
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{"JEDEC descr for common memory", 0x18, 255},
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{"JEDEC descr for attribute memory", 0x19, 255},
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{"Configuration map", 0x1A, 255},
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{"Configuration entry", 0x1B, 255},
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{"Other conditions for common memory", 0x1C, 255},
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{"Other conditions for attribute memory", 0x1D, 255},
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{"Geometry info for common memory", 0x1E, 255},
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{"Geometry info for attribute memory", 0x1F, 255},
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{"Manufacturer ID", 0x20, 4},
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{"Functional ID", 0x21, 2},
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{"Functional EXT", 0x22, 255},
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{"Software interleave", 0x23, 2},
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{"Version 2 Info", 0x40, 255},
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{"Data format", 0x41, 255},
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{"Geometry", 0x42, 4},
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{"Byte order", 0x43, 2},
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{"Card init date", 0x44, 4},
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{"Battery replacement", 0x45, 4},
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{"Organization", 0x46, 255},
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{"Terminator", 0xFF, 0},
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{0, 0, 0}
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};
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/*
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* After reading the tuples, decode the relevant ones.
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*/
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struct cis *
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readcis(int fd)
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{
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struct tuple_list *tl;
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struct tuple *tp;
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struct cis *cp;
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cp = xmalloc(sizeof(*cp));
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cp->tlist = read_tuples(fd);
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if (cp->tlist == 0)
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return (NULL);
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for (tl = cp->tlist; tl; tl = tl->next)
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for (tp = tl->tuples; tp; tp = tp->next) {
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#if 0
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printf("tuple code = 0x%02x, data is\n", tp->code);
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dump(tp->data, tp->length);
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#endif
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switch (tp->code) {
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case CIS_MEM_COMMON: /* 0x01 */
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device_desc(tp->data, tp->length, &cp->common_mem);
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break;
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case CIS_INFO_V1: /* 0x15 */
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cis_info(cp, tp->data, tp->length);
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break;
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case CIS_MEM_ATTR: /* 0x17 */
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device_desc(tp->data, tp->length, &cp->attr_mem);
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break;
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case CIS_CONF_MAP: /* 0x1A */
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config_map(cp, tp->data, tp->length);
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break;
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case CIS_CONFIG: /* 0x1B */
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cis_config(cp, tp->data, tp->length);
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break;
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case CIS_MANUF_ID: /* 0x20 */
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cis_manuf_id(cp, tp->data, tp->length);
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break;
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case CIS_FUNC_ID: /* 0x21 */
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cis_func_id(cp, tp->data, tp->length);
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break;
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case CIS_FUNC_EXT: /* 0x22 */
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if (cp->func_id1 == 6) /* LAN adaptor */
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cis_network_ext(cp, tp->data, tp->length);
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break;
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}
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}
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return (cp);
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}
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/*
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* free_cis - delete cis entry.
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*/
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void
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freecis(struct cis *cp)
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{
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struct cis_ioblk *io;
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struct cis_memblk *mem;
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struct cis_config *conf;
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struct tuple *tp;
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struct tuple_list *tl;
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while ((tl = cp->tlist) != 0) {
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cp->tlist = tl->next;
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while ((tp = tl->tuples) != 0) {
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tl->tuples = tp->next;
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if (tp->data)
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free(tp->data);
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}
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}
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while ((conf = cp->conf) != 0) {
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cp->conf = conf->next;
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while ((io = conf->io) != 0) {
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conf->io = io->next;
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free(io);
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}
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while ((mem = conf->mem) != 0) {
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conf->mem = mem->next;
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free(mem);
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}
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free(conf);
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}
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free(cp);
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}
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/*
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* Fills in CIS version data.
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*/
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static void
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cis_info(struct cis *cp, unsigned char *p, int len)
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{
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cp->maj_v = *p++;
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cp->min_v = *p++;
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len -= 2;
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if (cp->manuf) {
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free(cp->manuf);
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cp->manuf = NULL;
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}
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if (len > 1 && *p != 0xff) {
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cp->manuf = strdup(p);
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len -= strlen(p) + 1;
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p += strlen(p) + 1;
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}
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if (cp->vers) {
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free(cp->vers);
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cp->vers = NULL;
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}
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if (len > 1 && *p != 0xff) {
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cp->vers = strdup(p);
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len -= strlen(p) + 1;
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p += strlen(p) + 1;
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} else {
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cp->vers = strdup("[none]");
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}
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if (cp->add_info1) {
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free(cp->add_info1);
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cp->add_info1 = NULL;
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}
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if (len > 1 && *p != 0xff) {
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cp->add_info1 = strdup(p);
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len -= strlen(p) + 1;
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p += strlen(p) + 1;
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} else {
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cp->add_info1 = strdup("[none]");
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}
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if (cp->add_info2) {
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free(cp->add_info2);
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cp->add_info2 = NULL;
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}
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if (len > 1 && *p != 0xff)
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cp->add_info2 = strdup(p);
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else
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cp->add_info2 = strdup("[none]");
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}
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static void
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cis_manuf_id(struct cis *cp, unsigned char *p, int len)
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{
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if (len >= 4) {
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cp->manufacturer = tpl16(p);
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cp->product = tpl16(p+2);
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if (len == 5)
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cp->prodext = *(p+4); /* For xe driver */
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} else {
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cp->manufacturer=0;
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cp->product=0;
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cp->prodext=0;
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}
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}
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/*
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* Fills in CIS function ID.
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*/
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static void
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cis_func_id(struct cis *cp, unsigned char *p, int len)
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{
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cp->func_id1 = *p++;
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cp->func_id2 = *p++;
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}
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static void
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cis_network_ext(struct cis *cp, unsigned char *p, int len)
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{
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int i;
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switch (p[0]) {
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case 4: /* Node ID */
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if (len <= 2 || len < p[1] + 2)
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return;
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if (cp->lan_nid)
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free(cp->lan_nid);
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cp->lan_nid = xmalloc(p[1]);
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for (i = 0; i <= p[1]; i++)
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cp->lan_nid[i] = p[i + 1];
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break;
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}
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}
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/*
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* "FUJITSU LAN Card (FMV-J182)" has broken CIS
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*/
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static int
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fmvj182_check(unsigned char *p)
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{
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char manuf[BUFSIZ], vers[BUFSIZ];
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p++; /* major version */
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p++; /* minor version */
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strncpy(manuf, p, sizeof(manuf) - 1);
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while (*p++);
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strncpy(vers, p, sizeof(vers) - 1);
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if (!strcmp(manuf, "FUJITSU") && !strcmp(vers, "LAN Card(FMV-J182)"))
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return 1;
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else
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return 0;
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}
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#ifdef RATOCLAN
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/*
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* "RATOC LAN Card (REX-5588)" has broken CIS
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*/
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static int
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rex5588_check(unsigned char *p)
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{
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char manuf[BUFSIZ], vers[BUFSIZ];
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p++; /* major version */
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p++; /* minor version */
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strncpy(manuf, p, sizeof(manuf) - 1);
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while (*p++);
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strncpy(vers, p, sizeof(manuf) - 1);
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if (!strcmp(manuf, "PCMCIA LAN MBH10304 ES"))
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return 1;
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else
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return 0;
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}
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#endif
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#ifdef HSSYNTH
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/*
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* Broken CIS for "HITACHI MICROCOMPUTER SYSTEM LTD." "MSSHVPC02"
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*/
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static int
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hss_check(unsigned char *p)
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{
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char manuf[BUFSIZ], vers[BUFSIZ];
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p++; /* major version */
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p++; /* minor version */
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strncpy(manuf, p, sizeof(manuf) - 1);
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while (*p++);
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strncpy(vers, p, sizeof(vers) - 1);
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if (!strcmp(manuf, "HITACHI MICROCOMPUTER SYSTEMS LTD.")
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&& !strcmp(vers, "MSSHVPC02"))
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return 1;
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else
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return 0;
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}
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#endif /* HSSYNTH */
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/*
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* device_desc - decode device descriptor.
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*/
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static void
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device_desc(unsigned char *p, int len, struct dev_mem *dp)
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{
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while (len > 0 && *p != 0xFF) {
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dp->valid = 1;
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dp->type = (*p & 0xF0) >> 4;
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dp->wps = !!(*p & 0x8);
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dp->speed = *p & 7;
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p++;
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if (*p != 0xFF) {
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dp->addr = (*p >> 3) & 0xF;
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dp->units = *p & 7;
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}
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p++;
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len -= 2;
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}
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}
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/*
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* configuration map of card control register.
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*/
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static void
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config_map(struct cis *cp, unsigned char *p, int len)
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{
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unsigned char *p1;
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int rlen = (*p & 3) + 1;
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p1 = p + 1;
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cp->last_config = *p1++ & 0x3F;
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cp->reg_addr = parse_num(rlen | 0x10, p1, &p1, 0);
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cp->ccrs = *p1;
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}
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/*
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* Parse variable length value.
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*/
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u_int
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parse_num(int sz, u_char *p, u_char **q, int ofs)
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{
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u_int num = 0;
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switch (sz) {
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case 0:
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case 0x10:
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break;
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case 1:
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case 0x11:
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num = (*p++) + ofs;
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break;
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case 2:
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case 0x12:
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num = tpl16(p) + ofs;
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p += 2;
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break;
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case 0x13:
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num = tpl24(p) + ofs;
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p += 3;
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break;
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case 3:
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case 0x14:
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num = tpl32(p) + ofs;
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p += 4;
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break;
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}
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if (q)
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*q = p;
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return num;
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}
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/*
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* CIS config entry - Decode and build configuration entry.
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*/
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static void
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cis_config(struct cis *cp, unsigned char *p, int len)
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{
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int x;
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int i, j;
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struct cis_config *conf, *last;
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unsigned char feat;
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conf = xmalloc(sizeof(*conf));
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if ((last = cp->conf) != 0) {
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while (last->next)
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last = last->next;
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last->next = conf;
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} else
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cp->conf = conf;
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conf->id = *p & 0x3F; /* Config index */
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#ifdef RATOCLAN
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if (rex5588 && conf->id >= 0x08 && conf->id <= 0x1d)
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conf->id |= 0x20;
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#endif
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if (*p & 0x40) /* Default flag */
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cp->def_config = conf;
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if (*p++ & 0x80)
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p++; /* Interface byte skip */
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feat = *p++; /* Features byte */
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for (i = 0; i < CIS_FEAT_POWER(feat); i++) {
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unsigned char parms = *p++;
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conf->pwr = 1;
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for (j = 0; j < 8; j++)
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if (parms & (1 << j))
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while (*p++ & 0x80);
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}
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if (feat & CIS_FEAT_TIMING) {
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conf->timing = 1;
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i = *p++;
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if (CIS_WAIT_SCALE(i) != 3)
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p++;
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if (CIS_READY_SCALE(i) != 7)
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p++;
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if (CIS_RESERVED_SCALE(i) != 7)
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p++;
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}
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if (feat & CIS_FEAT_I_O) {
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conf->iospace = 1;
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if (CIS_IO_RANGE & *p)
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conf->io_blks = CIS_IO_BLKS(p[1]) + 1;
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conf->io_addr = CIS_IO_ADDR(*p);
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conf->io_bus = (*p >> 5) & 3; /* CIS_IO_8BIT | CIS_IO_16BIT */
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if (*p++ & CIS_IO_RANGE) {
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struct cis_ioblk *io;
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struct cis_ioblk *last_io = NULL;
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i = CIS_IO_ADSZ(*p);
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j = CIS_IO_BLKSZ(*p++);
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for (x = 0; x < conf->io_blks; x++) {
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io = xmalloc(sizeof(*io));
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if (last_io)
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last_io->next = io;
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else
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conf->io = io;
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last_io = io;
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io->addr = parse_num(i, p, &p, 0);
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io->size = parse_num(j, p, &p, 1);
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}
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}
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}
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if (feat & CIS_FEAT_IRQ) {
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conf->irq = 1;
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conf->irqlevel = *p & 0xF;
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conf->irq_flags = *p & 0xF0;
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if (*p++ & CIS_IRQ_MASK) {
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conf->irq_mask = tpl16(p);
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p += 2;
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}
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}
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switch (CIS_FEAT_MEMORY(feat)) {
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case CIS_FEAT_MEM_NONE:
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break;
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case CIS_FEAT_MEM_LEN:
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conf->memspace = 1;
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conf->mem = xmalloc(sizeof(*conf->mem));
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conf->mem->length = tpl16(p) << 8;
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break;
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case CIS_FEAT_MEM_ADDR:
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conf->memspace = 1;
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conf->mem = xmalloc(sizeof(*conf->mem));
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conf->mem->length = tpl16(p) << 8;
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conf->mem->address = tpl16(p + 2) << 8;
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break;
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case CIS_FEAT_MEM_WIN: {
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struct cis_memblk *mem;
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struct cis_memblk *last_mem = NULL;
|
|
|
|
conf->memspace = 1;
|
|
x = *p++;
|
|
conf->memwins = CIS_MEM_WINS(x);
|
|
for (i = 0; i < conf->memwins; i++) {
|
|
mem = xmalloc(sizeof(*mem));
|
|
if (last_mem)
|
|
last_mem->next = mem;
|
|
else
|
|
conf->mem = mem;
|
|
last_mem = mem;
|
|
mem->length = parse_num(CIS_MEM_LENSZ(x) | 0x10, p, &p, 0) << 8;
|
|
mem->address = parse_num(CIS_MEM_ADDRSZ(x) | 0x10, p, &p, 0) << 8;
|
|
if (x & CIS_MEM_HOST) {
|
|
mem->host_address = parse_num(CIS_MEM_ADDRSZ(x) | 0x10,
|
|
p, &p, 0) << 8;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (feat & CIS_FEAT_MISC) {
|
|
conf->misc_valid = 1;
|
|
conf->misc = *p++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Read the tuples from the card.
|
|
* The processing of tuples is as follows:
|
|
* - Read tuples at attribute memory, offset 0.
|
|
* - If a CIS_END is the first tuple, look for
|
|
* a tuple list at common memory offset 0; this list
|
|
* must start with a LINKTARGET.
|
|
* - If a long link tuple was encountered, execute the long
|
|
* link.
|
|
* - If a no-link tuple was seen, terminate processing.
|
|
* - If no no-link tuple exists, and no long link tuple
|
|
* exists while processing the primary tuple list,
|
|
* then look for a LINKTARGET tuple in common memory.
|
|
* - If a long link tuple is found in any list, then process
|
|
* it. Only one link is allowed per list.
|
|
*/
|
|
static struct tuple_list *tlist;
|
|
|
|
static struct tuple_list *
|
|
read_tuples(int fd)
|
|
{
|
|
struct tuple_list *tl = 0, *last_tl;
|
|
struct tuple *tp;
|
|
int flag;
|
|
off_t offs;
|
|
|
|
tlist = 0;
|
|
last_tl = tlist = read_one_tuplelist(fd, MDF_ATTR, (off_t) 0);
|
|
|
|
/* Now start processing the links (if any). */
|
|
do {
|
|
flag = MDF_ATTR;
|
|
tp = find_tuple_in_list(last_tl, CIS_LONGLINK_A);
|
|
if (tp == 0) {
|
|
flag = 0;
|
|
tp = find_tuple_in_list(last_tl, CIS_LONGLINK_C);
|
|
}
|
|
if (tp && tp->length == 4) {
|
|
offs = tpl32(tp->data);
|
|
#ifdef DEBUG
|
|
printf("Checking long link at %qd (%s memory)\n",
|
|
offs, flag ? "Attribute" : "Common");
|
|
#endif
|
|
/* If a link was found, read the tuple list from it. */
|
|
if (ck_linktarget(fd, offs, flag)) {
|
|
tl = read_one_tuplelist(fd, flag, offs);
|
|
last_tl->next = tl;
|
|
last_tl = tl;
|
|
}
|
|
} else
|
|
tl = 0;
|
|
} while (tl);
|
|
|
|
/*
|
|
* If the primary list had no NOLINK tuple, and no LINKTARGET,
|
|
* then try to read a tuple list at common memory (offset 0).
|
|
*/
|
|
if (find_tuple_in_list(tlist, CIS_NOLINK) == 0 && tlist->next == 0 &&
|
|
ck_linktarget(fd, (off_t) 0, 0)) {
|
|
#ifdef DEBUG
|
|
printf("Reading long link at %qd (%s memory)\n",
|
|
offs, flag ? "Attribute" : "Common");
|
|
#endif
|
|
tlist->next = read_one_tuplelist(fd, 0, (off_t) 0);
|
|
}
|
|
return (tlist);
|
|
}
|
|
|
|
/*
|
|
* Read one tuple list from the card.
|
|
*/
|
|
static struct tuple_list *
|
|
read_one_tuplelist(int fd, int flags, off_t offs)
|
|
{
|
|
struct tuple *tp, *last_tp = 0;
|
|
struct tuple_list *tl;
|
|
struct tuple_info *tinfo;
|
|
int total = 0;
|
|
unsigned char code, length;
|
|
int fmvj182 = 0;
|
|
#ifdef HSSYNTH
|
|
int hss = 0;
|
|
#endif /* HSSYNTH */
|
|
|
|
/* Check to see if this memory has already been scanned. */
|
|
for (tl = tlist; tl; tl = tl->next)
|
|
if (tl->offs == offs && tl->flags == (flags & MDF_ATTR))
|
|
return (0);
|
|
tl = xmalloc(sizeof(*tl));
|
|
tl->offs = offs;
|
|
tl->flags = flags & MDF_ATTR;
|
|
ioctl(fd, PIOCRWFLAG, &flags);
|
|
lseek(fd, offs, SEEK_SET);
|
|
do {
|
|
if (read_attr(fd, &code, 1) != 1) {
|
|
warn("CIS code read");
|
|
break;
|
|
}
|
|
total++;
|
|
if (code == CIS_NULL)
|
|
continue;
|
|
tp = xmalloc(sizeof(*tp));
|
|
tp->code = code;
|
|
if (code == CIS_END)
|
|
length = 0;
|
|
else {
|
|
if (read_attr(fd, &length, 1) != 1) {
|
|
warn("CIS len read");
|
|
break;
|
|
}
|
|
total++;
|
|
if (fmvj182 && (code == 0x1b) && (length == 25))
|
|
length = 31;
|
|
}
|
|
tp->length = length;
|
|
#ifdef DEBUG
|
|
printf("Tuple code = 0x%x, len = %d\n", code, length);
|
|
#endif
|
|
if (length == 0xFF) {
|
|
length = tp->length = 0;
|
|
code = CIS_END;
|
|
}
|
|
if (length != 0) {
|
|
total += length;
|
|
tp->data = xmalloc(length);
|
|
if (read_attr(fd, tp->data, length) != length) {
|
|
warn("CIS read");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check the tuple, and ignore it if it isn't in the table
|
|
* or the length is illegal.
|
|
*/
|
|
tinfo = get_tuple_info(code);
|
|
if (code == CIS_INFO_V1) {
|
|
/* Hack for broken CIS of FMV-J182 Ethernet card */
|
|
fmvj182 = fmvj182_check(tp->data);
|
|
#ifdef RATOCLAN
|
|
/* Hack for RATOC LAN card */
|
|
rex5588 = rex5588_check(tp->data);
|
|
#endif /* RATOCLAN */
|
|
#ifdef HSSYNTH
|
|
/* Hack for Hitachi Speech Synthesis card */
|
|
hss = hss_check(tp->data);
|
|
#endif /* HSSYNTH */
|
|
}
|
|
if (tinfo != NULL && (tinfo->length != 255 && tinfo->length > length)) {
|
|
printf("code %s ignored\n", tuple_name(code));
|
|
tp->code = CIS_NULL;
|
|
}
|
|
if (tl->tuples == NULL)
|
|
tl->tuples = tp;
|
|
else
|
|
last_tp->next = tp;
|
|
last_tp = tp;
|
|
} while (code != CIS_END && total < 1024);
|
|
return (tl);
|
|
}
|
|
|
|
/*
|
|
* return true if the offset points to a LINKTARGET tuple.
|
|
*/
|
|
static int
|
|
ck_linktarget(int fd, off_t offs, int flag)
|
|
{
|
|
char blk[5];
|
|
|
|
ioctl(fd, PIOCRWFLAG, &flag);
|
|
lseek(fd, offs, SEEK_SET);
|
|
if (read_attr(fd, blk, 5) != 5)
|
|
return (0);
|
|
if (blk[0] == 0x13 &&
|
|
blk[1] == 0x3 &&
|
|
blk[2] == 'C' &&
|
|
blk[3] == 'I' &&
|
|
blk[4] == 'S')
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* find_tuple_in_list - find a tuple within a
|
|
* single tuple list.
|
|
*/
|
|
static struct tuple *
|
|
find_tuple_in_list(struct tuple_list *tl, unsigned char code)
|
|
{
|
|
struct tuple *tp;
|
|
|
|
for (tp = tl->tuples; tp; tp = tp->next)
|
|
if (tp->code == code)
|
|
break;
|
|
return (tp);
|
|
}
|
|
|
|
static int
|
|
read_attr(int fd, char *bp, int len)
|
|
{
|
|
char blk[1024], *p = blk;
|
|
int i, l;
|
|
|
|
if (isdumpcisfile)
|
|
return (read(fd, bp, len));
|
|
if (len > sizeof(blk) / 2)
|
|
len = sizeof(blk) / 2;
|
|
l = i = read(fd, blk, len * 2);
|
|
if (i <= 0) {
|
|
printf("Read return %d bytes (expected %d)\n", i, len * 2);
|
|
return (i);
|
|
}
|
|
while (i > 0) {
|
|
*bp++ = *p++;
|
|
p++;
|
|
i -= 2;
|
|
}
|
|
return (l / 2);
|
|
}
|
|
|
|
/*
|
|
* return table entry for code.
|
|
*/
|
|
static struct tuple_info *
|
|
get_tuple_info(unsigned char code)
|
|
{
|
|
struct tuple_info *tp;
|
|
|
|
for (tp = tuple_info; tp->name; tp++)
|
|
if (tp->code == code)
|
|
return (tp);
|
|
return (0);
|
|
}
|
|
|
|
char *
|
|
tuple_name(unsigned char code)
|
|
{
|
|
struct tuple_info *tp;
|
|
|
|
tp = get_tuple_info(code);
|
|
if (tp)
|
|
return (tp->name);
|
|
return ("Unknown");
|
|
}
|