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