255 lines
5.7 KiB
C
255 lines
5.7 KiB
C
/*
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* Copyright (C) 2002
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* Hidetoshi Shimokawa. 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Hidetoshi Shimokawa.
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*
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* 4. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <dev/firewire/firewire.h>
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#include <dev/firewire/iec13213.h>
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#ifdef _KERNEL
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#else
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#include <netinet/in.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <err.h>
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#include <stdlib.h>
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#include <string.h>
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#endif
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void
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crom_init_context(struct crom_context *cc, u_int32_t *p)
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{
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struct csrhdr *hdr;
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hdr = (struct csrhdr *)p;
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if (hdr->info_len == 1) {
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/* minimum ROM */
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cc->depth = -1;
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}
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p += 1 + hdr->info_len;
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cc->depth = 0;
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cc->stack[0].dir = (struct csrdirectory *)p;
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cc->stack[0].index = 0;
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}
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struct csrreg *
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crom_get(struct crom_context *cc)
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{
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struct crom_ptr *ptr;
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ptr = &cc->stack[cc->depth];
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return (&ptr->dir->entry[ptr->index]);
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}
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void
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crom_next(struct crom_context *cc)
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{
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struct crom_ptr *ptr;
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struct csrreg *reg;
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if (cc->depth < 0)
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return;
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reg = crom_get(cc);
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if ((reg->key & CSRTYPE_MASK) == CSRTYPE_D) {
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cc->depth ++;
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if (cc->depth > CROM_MAX_DEPTH) {
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printf("crom_next: too deep\n");
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cc->depth --;
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goto again;
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}
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cc->stack[cc->depth].dir = (struct csrdirectory *)
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(reg + reg->val);
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cc->stack[cc->depth].index = 0;
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return;
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}
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again:
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ptr = &cc->stack[cc->depth];
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ptr->index ++;
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if (ptr->index < ptr->dir->crc_len)
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return;
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if (cc->depth > 0) {
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cc->depth--;
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goto again;
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}
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/* no more data */
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cc->depth = -1;
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}
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struct csrreg *
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crom_search_key(struct crom_context *cc, u_int8_t key)
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{
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struct csrreg *reg;
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while(cc->depth >= 0) {
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reg = crom_get(cc);
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if (reg->key == key)
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return reg;
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crom_next(cc);
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}
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return NULL;
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}
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void
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crom_parse_text(struct crom_context *cc, char *buf, int len)
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{
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struct csrreg *reg;
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struct csrtext *textleaf;
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u_int32_t *bp;
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int i, qlen;
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static char *nullstr = "(null)";
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reg = crom_get(cc);
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if (reg->key != CROM_TEXTLEAF) {
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strncpy(buf, nullstr, len);
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return;
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}
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textleaf = (struct csrtext *)(reg + reg->val);
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/* XXX should check spec and type */
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bp = (u_int32_t *)&buf[0];
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qlen = textleaf->crc_len - 2;
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if (len < qlen * 4)
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qlen = len/4;
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for (i = 0; i < qlen; i ++)
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*bp++ = ntohl(textleaf->text[i]);
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/* make sure to terminate the string */
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if (len <= qlen * 4)
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buf[len - 1] = 0;
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else
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buf[qlen * 4] = 0;
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}
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u_int16_t
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crom_crc(u_int32_t *ptr, int len)
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{
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int i, shift;
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u_int32_t data, sum, crc = 0;
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for (i = 0; i < len; i++) {
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data = ptr[i];
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for (shift = 28; shift >= 0; shift -= 4) {
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sum = ((crc >> 12) ^ (data >> shift)) & 0xf;
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crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum;
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}
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crc &= 0xffff;
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}
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return((u_int16_t) crc);
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}
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#ifndef _KERNEL
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char *
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crom_desc(struct crom_context *cc, char *buf, int len)
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{
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struct csrreg *reg;
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struct csrdirectory *dir;
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char *desc;
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reg = crom_get(cc);
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switch (reg->key & CSRTYPE_MASK) {
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case CSRTYPE_I:
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snprintf(buf, len, "%d", reg->val);
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break;
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case CSRTYPE_L:
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case CSRTYPE_C:
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snprintf(buf, len, "offset=0x%04x(%d)", reg->val, reg->val);
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break;
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case CSRTYPE_D:
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dir = (struct csrdirectory *) (reg + reg->val);
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snprintf(buf, len, "len=0x%04x(%d) crc=0x%04x",
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dir->crc_len, dir->crc_len, dir->crc);
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}
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switch (reg->key) {
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case 0x03:
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desc = "module_vendor_ID";
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break;
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case 0x04:
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desc = "hardware_version";
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break;
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case 0x0c:
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desc = "node_capabilities";
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break;
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case 0x12:
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desc = "unit_spec_ID";
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break;
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case 0x13:
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desc = "unit_sw_version";
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break;
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case 0x14:
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desc = "logical_unit_number";
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break;
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case 0x17:
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desc = "model_ID";
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break;
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case 0x38:
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desc = "command_set_spec_ID";
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break;
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case 0x39:
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desc = "command_set";
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break;
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case 0x3a:
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desc = "unit_characteristics";
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break;
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case 0x3b:
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desc = "command_set_revision";
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break;
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case 0x3c:
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desc = "firmware_revision";
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break;
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case 0x3d:
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desc = "reconnect_timeout";
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break;
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case 0x54:
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desc = "management_agent";
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break;
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case 0x81:
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desc = "text_leaf";
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crom_parse_text(cc, buf, len);
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break;
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case 0xd1:
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desc = "unit_directory";
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break;
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case 0xd4:
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desc = "logical_unit_directory";
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break;
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default:
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desc = "unknown";
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}
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return desc;
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}
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#endif
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