NetBSD-5.0.2/sys/dev/ieee1394/fwcrom.c
/* $NetBSD: fwcrom.c,v 1.7 2008/05/02 19:50:04 xtraeme Exp $ */
/*-
* Copyright (c) 2002-2003
* 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fwcrom.c,v 1.7 2008/05/02 19:50:04 xtraeme Exp $");
#ifdef __FreeBSD__
__FBSDID("$FreeBSD: /repoman/r/ncvs/src/sys/dev/firewire/fwcrom.c,v 1.14 2006/02/04 21:37:39 imp Exp $");
#endif
#if defined(__FreeBSD__)
#include <sys/param.h>
#ifdef _BOOT
#include <stand.h>
#include <bootstrap.h>
#else
#if defined(_KERNEL) || defined(TEST)
#include <sys/queue.h>
#endif
#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
#endif
#ifdef __DragonFly__
#include "fw_port.h"
#include "firewire.h"
#include "iec13213.h"
#else
#include <dev/firewire/fw_port.h>
#include <dev/firewire/firewire.h>
#include <dev/firewire/iec13213.h>
#endif
#elif defined(__NetBSD__)
#include <sys/param.h>
#ifdef _KERNEL
#include <sys/device.h>
#include <sys/errno.h>
#include <sys/systm.h>
#else
#include <stdio.h>
#include <string.h>
#endif
#include <dev/ieee1394/fw_port.h>
#include <dev/ieee1394/firewire.h>
#include <dev/ieee1394/iec13213.h>
#endif
#define MAX_ROM (1024 - sizeof(uint32_t) * 5)
#define CROM_END(cc) ((char *)(cc)->stack[0].dir + MAX_ROM - 1)
void
crom_init_context(struct crom_context *cc, uint32_t *p)
{
struct csrhdr *hdr;
hdr = (struct csrhdr *)p;
if (hdr->info_len <= 1) {
/* minimum or invalid ROM */
cc->depth = -1;
return;
}
p += 1 + hdr->info_len;
/* check size of root directory */
if (((struct csrdirectory *)p)->crc_len == 0) {
cc->depth = -1;
return;
}
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) {
if (cc->depth >= CROM_MAX_DEPTH) {
printf("crom_next: too deep\n");
goto again;
}
cc->depth ++;
ptr = &cc->stack[cc->depth];
ptr->dir = (struct csrdirectory *) (reg + reg->val);
ptr->index = 0;
goto check;
}
again:
ptr = &cc->stack[cc->depth];
ptr->index ++;
check:
if (ptr->index < ptr->dir->crc_len &&
(char *)crom_get(cc) <= CROM_END(cc))
return;
if (ptr->index < ptr->dir->crc_len)
printf("crom_next: bound check failed\n");
if (cc->depth > 0) {
cc->depth--;
goto again;
}
/* no more data */
cc->depth = -1;
}
struct csrreg *
crom_search_key(struct crom_context *cc, uint8_t key)
{
struct csrreg *reg;
while(cc->depth >= 0) {
reg = crom_get(cc);
if (reg->key == key)
return reg;
crom_next(cc);
}
return NULL;
}
int
crom_has_specver(uint32_t *p, uint32_t spec, uint32_t ver)
{
struct csrreg *reg;
struct crom_context c, *cc;
int state = 0;
cc = &c;
crom_init_context(cc, p);
while(cc->depth >= 0) {
reg = crom_get(cc);
if (state == 0) {
if (reg->key == CSRKEY_SPEC && reg->val == spec)
state = 1;
else
state = 0;
} else {
if (reg->key == CSRKEY_VER && reg->val == ver)
return 1;
else
state = 0;
}
crom_next(cc);
}
return 0;
}
void
crom_parse_text(struct crom_context *cc, char *buf, int len)
{
struct csrreg *reg;
struct csrtext *textleaf;
uint32_t *bp;
int i, qlen;
static char *nullstr = (char *)&"(null)";
if (cc->depth < 0)
return;
reg = crom_get(cc);
if (reg->key != CROM_TEXTLEAF ||
(char *)(reg + reg->val) > CROM_END(cc)) {
strncpy(buf, nullstr, len);
return;
}
textleaf = (struct csrtext *)(reg + reg->val);
if ((char *)textleaf + textleaf->crc_len > CROM_END(cc)) {
strncpy(buf, nullstr, len);
return;
}
/* XXX should check spec and type */
bp = (uint32_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;
}
uint16_t
crom_crc(uint32_t *ptr, int len)
{
int i, shift;
uint32_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((uint16_t) crc);
}
#if !defined(_KERNEL) && !defined(_BOOT)
static void
crom_desc_specver(uint32_t spec, uint32_t ver, char *buf, int len)
{
const char *s = NULL;
if (spec == CSRVAL_ANSIT10 || spec == 0) {
switch (ver) {
case CSRVAL_T10SBP2:
s = "SBP-2";
break;
default:
if (spec != 0)
s = "unknown ANSIT10";
}
}
if (spec == CSRVAL_1394TA || spec == 0) {
switch (ver) {
case CSR_PROTAVC:
s = "AV/C";
break;
case CSR_PROTCAL:
s = "CAL";
break;
case CSR_PROTEHS:
s = "EHS";
break;
case CSR_PROTHAVI:
s = "HAVi";
break;
case CSR_PROTCAM104:
s = "1394 Cam 1.04";
break;
case CSR_PROTCAM120:
s = "1394 Cam 1.20";
break;
case CSR_PROTCAM130:
s = "1394 Cam 1.30";
break;
case CSR_PROTDPP:
s = "1394 Direct print";
break;
case CSR_PROTIICP:
s = "Industrial & Instrument";
break;
default:
if (spec != 0)
s = "unknown 1394TA";
}
}
if (s != NULL)
snprintf(buf, len, "%s", s);
}
const char *
crom_desc(struct crom_context *cc, char *buf, int len)
{
struct csrreg *reg;
struct csrdirectory *dir;
const char *desc;
uint16_t crc;
reg = crom_get(cc);
switch (reg->key & CSRTYPE_MASK) {
case CSRTYPE_I:
#if 0
len -= snprintf(buf, len, "%d", reg->val);
buf += strlen(buf);
#else
*buf = '\0';
#endif
break;
case CSRTYPE_C:
len -= snprintf(buf, len, "offset=0x%04x(%d)",
reg->val, reg->val);
buf += strlen(buf);
break;
case CSRTYPE_L:
/* XXX fall through */
case CSRTYPE_D:
dir = (struct csrdirectory *) (reg + reg->val);
crc = crom_crc((uint32_t *)&dir->entry[0], dir->crc_len);
len -= snprintf(buf, len, "len=%d crc=0x%04x(%s) ",
dir->crc_len, dir->crc,
(crc == dir->crc) ? "OK" : "NG");
buf += strlen(buf);
}
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";
crom_desc_specver(0, reg->val, buf, len);
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 + strlen(buf), len);
break;
case 0xd1:
desc = "unit_directory";
break;
case 0xd4:
desc = "logical_unit_directory";
break;
default:
desc = "unknown";
}
return desc;
}
#endif
#if defined(_KERNEL) || defined(_BOOT) || defined(TEST)
int
crom_add_quad(struct crom_chunk *chunk, uint32_t entry)
{
int index;
index = chunk->data.crc_len;
if (index >= CROM_MAX_CHUNK_LEN - 1) {
printf("too large chunk %d\n", index);
return(-1);
}
chunk->data.buf[index] = entry;
chunk->data.crc_len++;
return(index);
}
int
crom_add_entry(struct crom_chunk *chunk, int key, int val)
{
union {
struct csrreg reg;
uint32_t i;
} foo;
foo.reg.key = key;
foo.reg.val = val;
return(crom_add_quad(chunk, foo.i));
}
int
crom_add_chunk(struct crom_src *src, struct crom_chunk *parent,
struct crom_chunk *child, int key)
{
int index;
if (parent == NULL) {
STAILQ_INSERT_TAIL(&src->chunk_list, child, link);
return(0);
}
index = crom_add_entry(parent, key, 0);
if (index < 0) {
return(-1);
}
child->ref_chunk = parent;
child->ref_index = index;
STAILQ_INSERT_TAIL(&src->chunk_list, child, link);
return(index);
}
#if defined(__FreeBSD__)
#define MAX_TEXT ((CROM_MAX_CHUNK_LEN + 1) * 4 - sizeof(struct csrtext))
#elif defined(__NetBSD__)
#define MAX_TEXT (int)((CROM_MAX_CHUNK_LEN + 1) * 4 - sizeof(struct csrtext))
#endif
int
crom_add_simple_text(struct crom_src *src, struct crom_chunk *parent,
struct crom_chunk *chunk, const char *buf)
{
struct csrtext *tl;
uint32_t *p;
int len, i;
char t[MAX_TEXT];
len = strlen(buf);
if (len > MAX_TEXT) {
#if defined(__DragonFly__) || __FreeBSD_version < 500000 || defined(__NetBSD__)
printf("text(%d) trancated to %d.\n", len, MAX_TEXT);
#else
printf("text(%d) trancated to %td.\n", len, MAX_TEXT);
#endif
len = MAX_TEXT;
}
tl = (struct csrtext *) &chunk->data;
tl->crc_len = howmany(sizeof(struct csrtext) + len, sizeof(uint32_t));
tl->spec_id = 0;
tl->spec_type = 0;
tl->lang_id = 0;
bzero(&t[0], roundup2(len, sizeof(uint32_t)));
bcopy(buf, &t[0], len);
p = (uint32_t *)&t[0];
for (i = 0; i < howmany(len, sizeof(uint32_t)); i ++)
tl->text[i] = ntohl(*p++);
return (crom_add_chunk(src, parent, chunk, CROM_TEXTLEAF));
}
static int
crom_copy(uint32_t *src, uint32_t *dst, int *offset, int len, int maxlen)
{
if (*offset + len > maxlen) {
printf("Config. ROM is too large for the buffer\n");
return(-1);
}
bcopy(src, (char *)(dst + *offset), len * sizeof(uint32_t));
*offset += len;
return(0);
}
int
crom_load(struct crom_src *src, uint32_t *buf, int maxlen)
{
struct crom_chunk *chunk, *parent;
struct csrhdr *hdr;
#if defined(_KERNEL) || defined(_BOOT)
uint32_t *ptr;
int i;
#endif
int count, offset;
int len;
offset = 0;
/* Determine offset */
STAILQ_FOREACH(chunk, &src->chunk_list, link) {
chunk->offset = offset;
/* Assume the offset of the parent is already known */
parent = chunk->ref_chunk;
if (parent != NULL) {
struct csrreg *reg;
reg = (struct csrreg *)
&parent->data.buf[chunk->ref_index];
reg->val = offset -
(parent->offset + 1 + chunk->ref_index);
}
offset += 1 + chunk->data.crc_len;
}
/* Calculate CRC and dump to the buffer */
len = 1 + src->hdr.info_len;
count = 0;
if (crom_copy((uint32_t *)&src->hdr, buf, &count, len, maxlen) < 0)
return(-1);
STAILQ_FOREACH(chunk, &src->chunk_list, link) {
chunk->data.crc =
crom_crc(&chunk->data.buf[0], chunk->data.crc_len);
len = 1 + chunk->data.crc_len;
if (crom_copy((uint32_t *)&chunk->data, buf,
&count, len, maxlen) < 0)
return(-1);
}
hdr = (struct csrhdr *)buf;
hdr->crc_len = count - 1;
hdr->crc = crom_crc(&buf[1], hdr->crc_len);
#if defined(_KERNEL) || defined(_BOOT)
/* byte swap */
ptr = buf;
for (i = 0; i < count; i ++) {
*ptr = htonl(*ptr);
ptr++;
}
#endif
return(count);
}
#endif
#ifdef TEST
int
main () {
struct crom_src src;
struct crom_chunk root,unit1,unit2,unit3;
struct crom_chunk text1,text2,text3,text4,text5,text6,text7;
uint32_t buf[256], *p;
int i;
bzero(&src, sizeof(src));
bzero(&root, sizeof(root));
bzero(&unit1, sizeof(unit1));
bzero(&unit2, sizeof(unit2));
bzero(&unit3, sizeof(unit3));
bzero(&text1, sizeof(text1));
bzero(&text2, sizeof(text2));
bzero(&text3, sizeof(text3));
bzero(&text3, sizeof(text4));
bzero(&text3, sizeof(text5));
bzero(&text3, sizeof(text6));
bzero(&text3, sizeof(text7));
bzero(buf, sizeof(buf));
/* BUS info sample */
src.hdr.info_len = 4;
src.businfo.bus_name = CSR_BUS_NAME_IEEE1394;
src.businfo.eui64.hi = 0x11223344;
src.businfo.eui64.lo = 0x55667788;
src.businfo.link_spd = FWSPD_S400;
src.businfo.generation = 0;
src.businfo.max_rom = MAXROM_4;
src.businfo.max_rec = 10;
src.businfo.cyc_clk_acc = 100;
src.businfo.pmc = 0;
src.businfo.bmc = 1;
src.businfo.isc = 1;
src.businfo.cmc = 1;
src.businfo.irmc = 1;
STAILQ_INIT(&src.chunk_list);
/* Root directory */
crom_add_chunk(&src, NULL, &root, 0);
crom_add_entry(&root, CSRKEY_NCAP, 0x123456);
/* private company_id */
crom_add_entry(&root, CSRKEY_VENDOR, 0xacde48);
crom_add_simple_text(&src, &root, &text1, OS_STR);
crom_add_entry(&root, CSRKEY_HW, OS_VER);
crom_add_simple_text(&src, &root, &text2, OS_VER_STR);
/* SBP unit directory */
crom_add_chunk(&src, &root, &unit1, CROM_UDIR);
crom_add_entry(&unit1, CSRKEY_SPEC, CSRVAL_ANSIT10);
crom_add_entry(&unit1, CSRKEY_VER, CSRVAL_T10SBP2);
crom_add_entry(&unit1, CSRKEY_COM_SPEC, CSRVAL_ANSIT10);
crom_add_entry(&unit1, CSRKEY_COM_SET, CSRVAL_SCSI);
/* management_agent */
crom_add_entry(&unit1, CROM_MGM, 0x1000);
crom_add_entry(&unit1, CSRKEY_UNIT_CH, (10<<8) | 8);
/* Device type and LUN */
crom_add_entry(&unit1, CROM_LUN, 0);
crom_add_entry(&unit1, CSRKEY_MODEL, 1);
crom_add_simple_text(&src, &unit1, &text3, "scsi_target");
/* RFC2734 IPv4 over IEEE1394 */
crom_add_chunk(&src, &root, &unit2, CROM_UDIR);
crom_add_entry(&unit2, CSRKEY_SPEC, CSRVAL_IETF);
crom_add_simple_text(&src, &unit2, &text4, "IANA");
crom_add_entry(&unit2, CSRKEY_VER, 1);
crom_add_simple_text(&src, &unit2, &text5, "IPv4");
/* RFC3146 IPv6 over IEEE1394 */
crom_add_chunk(&src, &root, &unit3, CROM_UDIR);
crom_add_entry(&unit3, CSRKEY_SPEC, CSRVAL_IETF);
crom_add_simple_text(&src, &unit3, &text6, "IANA");
crom_add_entry(&unit3, CSRKEY_VER, 2);
crom_add_simple_text(&src, &unit3, &text7, "IPv6");
crom_load(&src, buf, 256);
p = buf;
#define DUMP_FORMAT "%08x %08x %08x %08x %08x %08x %08x %08x\n"
for (i = 0; i < 256/8; i ++) {
printf(DUMP_FORMAT,
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
p += 8;
}
return(0);
}
#endif