fwcrom.c

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    1 /*-
    2  * Copyright (c) 2002-2003
    3  *      Hidetoshi Shimokawa. All rights reserved.
    4  * 
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *
   16  *      This product includes software developed by Hidetoshi Shimokawa.
   17  *
   18  * 4. Neither the name of the author nor the names of its contributors
   19  *    may be used to endorse or promote products derived from this software
   20  *    without specific prior written permission.
   21  * 
   22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  */
   34 
   35 #ifdef __FreeBSD__
   36 #include <sys/cdefs.h>
   37 __FBSDID("$FreeBSD$");
   38 #endif
   39 
   40 #include <sys/param.h>
   41 
   42 #ifdef _BOOT
   43 #include <stand.h>
   44 #include <bootstrap.h>
   45 #else
   46 #if defined(_KERNEL) || defined(TEST)
   47 #include <sys/queue.h>
   48 #endif
   49 #ifdef _KERNEL
   50 #include <sys/systm.h>
   51 #include <sys/kernel.h>
   52 #else
   53 #include <netinet/in.h>
   54 #include <fcntl.h>
   55 #include <stdio.h>
   56 #include <err.h>
   57 #include <stdlib.h>
   58 #include <string.h>
   59 #endif
   60 #endif
   61 
   62 #ifdef __DragonFly__
   63 #include "firewire.h"
   64 #include "iec13213.h"
   65 #else
   66 #include <dev/firewire/firewire.h>
   67 #include <dev/firewire/iec13213.h>
   68 #endif
   69 
   70 #define MAX_ROM (1024 - sizeof(uint32_t) * 5)
   71 #define CROM_END(cc) ((vm_offset_t)(cc)->stack[0].dir + MAX_ROM - 1)
   72 
   73 void
   74 crom_init_context(struct crom_context *cc, uint32_t *p)
   75 {
   76         struct csrhdr *hdr;
   77 
   78         hdr = (struct csrhdr *)p;
   79         if (hdr->info_len <= 1) {
   80                 /* minimum or invalid ROM */
   81                 cc->depth = -1;
   82                 return;
   83         }
   84         p += 1 + hdr->info_len;
   85 
   86         /* check size of root directory */
   87         if (((struct csrdirectory *)p)->crc_len == 0) {
   88                 cc->depth = -1;
   89                 return;
   90         }
   91         cc->depth = 0;
   92         cc->stack[0].dir = (struct csrdirectory *)p;
   93         cc->stack[0].index = 0;
   94 }
   95 
   96 struct csrreg *
   97 crom_get(struct crom_context *cc)
   98 {
   99         struct crom_ptr *ptr;
  100 
  101         ptr = &cc->stack[cc->depth];
  102         return (&ptr->dir->entry[ptr->index]);
  103 }
  104 
  105 void
  106 crom_next(struct crom_context *cc)
  107 {
  108         struct crom_ptr *ptr;
  109         struct csrreg *reg;
  110 
  111         if (cc->depth < 0)
  112                 return;
  113         reg = crom_get(cc);
  114         if ((reg->key & CSRTYPE_MASK) == CSRTYPE_D) {
  115                 if (cc->depth >= CROM_MAX_DEPTH) {
  116                         printf("crom_next: too deep\n");
  117                         goto again;
  118                 }
  119                 cc->depth ++;
  120 
  121                 ptr = &cc->stack[cc->depth];
  122                 ptr->dir = (struct csrdirectory *) (reg + reg->val);
  123                 ptr->index = 0;
  124                 goto check;
  125         }
  126 again:
  127         ptr = &cc->stack[cc->depth];
  128         ptr->index ++;
  129 check:
  130         if (ptr->index < ptr->dir->crc_len &&
  131                         (vm_offset_t)crom_get(cc) <= CROM_END(cc))
  132                 return;
  133 
  134         if (ptr->index < ptr->dir->crc_len)
  135                 printf("crom_next: bound check failed\n");
  136 
  137         if (cc->depth > 0) {
  138                 cc->depth--;
  139                 goto again;
  140         }
  141         /* no more data */
  142         cc->depth = -1;
  143 }
  144 
  145 
  146 struct csrreg *
  147 crom_search_key(struct crom_context *cc, uint8_t key)
  148 {
  149         struct csrreg *reg;
  150 
  151         while(cc->depth >= 0) {
  152                 reg = crom_get(cc);
  153                 if (reg->key == key)
  154                         return reg;
  155                 crom_next(cc);
  156         }
  157         return NULL;
  158 }
  159 
  160 int
  161 crom_has_specver(uint32_t *p, uint32_t spec, uint32_t ver)
  162 {
  163         struct csrreg *reg;
  164         struct crom_context c, *cc;
  165         int state = 0;
  166 
  167         cc = &c;
  168         crom_init_context(cc, p);
  169         while(cc->depth >= 0) {
  170                 reg = crom_get(cc);
  171                 if (state == 0) {
  172                         if (reg->key == CSRKEY_SPEC && reg->val == spec)
  173                                 state = 1;
  174                         else
  175                                 state = 0;
  176                 } else {
  177                         if (reg->key == CSRKEY_VER && reg->val == ver)
  178                                 return 1;
  179                         else
  180                                 state = 0;
  181                 }
  182                 crom_next(cc);
  183         }
  184         return 0;
  185 }
  186 
  187 void
  188 crom_parse_text(struct crom_context *cc, char *buf, int len)
  189 {
  190         struct csrreg *reg;
  191         struct csrtext *textleaf;
  192         uint32_t *bp;
  193         int i, qlen;
  194         static char *nullstr = "(null)";
  195 
  196         if (cc->depth < 0)
  197                 return;
  198 
  199         reg = crom_get(cc);
  200         if (reg->key != CROM_TEXTLEAF ||
  201                         (vm_offset_t)(reg + reg->val) > CROM_END(cc)) {
  202                 strncpy(buf, nullstr, len);
  203                 return;
  204         }
  205         textleaf = (struct csrtext *)(reg + reg->val);
  206 
  207         if ((vm_offset_t)textleaf + textleaf->crc_len > CROM_END(cc)) {
  208                 strncpy(buf, nullstr, len);
  209                 return;
  210         }
  211 
  212         /* XXX should check spec and type */
  213 
  214         bp = (uint32_t *)&buf[0];
  215         qlen = textleaf->crc_len - 2;
  216         if (len < qlen * 4)
  217                 qlen = len/4;
  218         for (i = 0; i < qlen; i ++)
  219                 *bp++ = ntohl(textleaf->text[i]);
  220         /* make sure to terminate the string */
  221         if (len <= qlen * 4)
  222                 buf[len - 1] = 0;
  223         else
  224                 buf[qlen * 4] = 0;
  225 }
  226 
  227 uint16_t
  228 crom_crc(uint32_t *ptr, int len)
  229 {
  230         int i, shift;
  231         uint32_t data, sum, crc = 0;
  232 
  233         for (i = 0; i < len; i++) {
  234                 data = ptr[i];
  235                 for (shift = 28; shift >= 0; shift -= 4) {
  236                         sum = ((crc >> 12) ^ (data >> shift)) & 0xf;
  237                         crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum;
  238                 }
  239                 crc &= 0xffff;
  240         }
  241         return((uint16_t) crc);
  242 }
  243 
  244 #if !defined(_KERNEL) && !defined(_BOOT)
  245 static void
  246 crom_desc_specver(uint32_t spec, uint32_t ver, char *buf, int len)
  247 {
  248         char *s = NULL;
  249 
  250         if (spec == CSRVAL_ANSIT10 || spec == 0) {
  251                 switch (ver) {
  252                 case CSRVAL_T10SBP2:
  253                         s = "SBP-2";
  254                         break;
  255                 default:
  256                         if (spec != 0)
  257                                 s = "unknown ANSIT10";
  258                 }
  259         }
  260         if (spec == CSRVAL_1394TA || spec == 0) {
  261                 switch (ver) {
  262                 case CSR_PROTAVC:
  263                         s = "AV/C";
  264                         break;
  265                 case CSR_PROTCAL:
  266                         s = "CAL";
  267                         break;
  268                 case CSR_PROTEHS:
  269                         s = "EHS";
  270                         break;
  271                 case CSR_PROTHAVI:
  272                         s = "HAVi";
  273                         break;
  274                 case CSR_PROTCAM104:
  275                         s = "1394 Cam 1.04";
  276                         break;
  277                 case CSR_PROTCAM120:
  278                         s = "1394 Cam 1.20";
  279                         break;
  280                 case CSR_PROTCAM130:
  281                         s = "1394 Cam 1.30";
  282                         break;
  283                 case CSR_PROTDPP:
  284                         s = "1394 Direct print";
  285                         break;
  286                 case CSR_PROTIICP:
  287                         s = "Industrial & Instrument";
  288                         break;
  289                 default:
  290                         if (spec != 0)
  291                                 s = "unknown 1394TA";
  292                 }
  293         }
  294         if (s != NULL)
  295                 snprintf(buf, len, "%s", s);
  296 }
  297 
  298 char *
  299 crom_desc(struct crom_context *cc, char *buf, int len)
  300 {
  301         struct csrreg *reg;
  302         struct csrdirectory *dir;
  303         char *desc;
  304         uint16_t crc;
  305 
  306         reg = crom_get(cc);
  307         switch (reg->key & CSRTYPE_MASK) {
  308         case CSRTYPE_I:
  309 #if 0
  310                 len -= snprintf(buf, len, "%d", reg->val);
  311                 buf += strlen(buf);
  312 #else
  313                 *buf = '\0';
  314 #endif
  315                 break;
  316         case CSRTYPE_C:
  317                 len -= snprintf(buf, len, "offset=0x%04x(%d)",
  318                                                 reg->val, reg->val);
  319                 buf += strlen(buf);
  320                 break;
  321         case CSRTYPE_L:
  322                 /* XXX fall through */
  323         case CSRTYPE_D:
  324                 dir = (struct csrdirectory *) (reg + reg->val);
  325                 crc = crom_crc((uint32_t *)&dir->entry[0], dir->crc_len);
  326                 len -= snprintf(buf, len, "len=%d crc=0x%04x(%s) ",
  327                         dir->crc_len, dir->crc,
  328                         (crc == dir->crc) ? "OK" : "NG");
  329                 buf += strlen(buf);
  330         }
  331         switch (reg->key) {
  332         case 0x03:
  333                 desc = "module_vendor_ID";
  334                 break;
  335         case 0x04:
  336                 desc = "hardware_version";
  337                 break;
  338         case 0x0c:
  339                 desc = "node_capabilities";
  340                 break;
  341         case 0x12:
  342                 desc = "unit_spec_ID";
  343                 break;
  344         case 0x13:
  345                 desc = "unit_sw_version";
  346                 crom_desc_specver(0, reg->val, buf, len);
  347                 break;
  348         case 0x14:
  349                 desc = "logical_unit_number";
  350                 break;
  351         case 0x17:
  352                 desc = "model_ID";
  353                 break;
  354         case 0x38:
  355                 desc = "command_set_spec_ID";
  356                 break;
  357         case 0x39:
  358                 desc = "command_set";
  359                 break;
  360         case 0x3a:
  361                 desc = "unit_characteristics";
  362                 break;
  363         case 0x3b:
  364                 desc = "command_set_revision";
  365                 break;
  366         case 0x3c:
  367                 desc = "firmware_revision";
  368                 break;
  369         case 0x3d:
  370                 desc = "reconnect_timeout";
  371                 break;
  372         case 0x54:
  373                 desc = "management_agent";
  374                 break;
  375         case 0x81:
  376                 desc = "text_leaf";
  377                 crom_parse_text(cc, buf + strlen(buf), len);
  378                 break;
  379         case 0xd1:
  380                 desc = "unit_directory";
  381                 break;
  382         case 0xd4:
  383                 desc = "logical_unit_directory";
  384                 break;
  385         default:
  386                 desc = "unknown";
  387         }
  388         return desc;
  389 }
  390 #endif
  391 
  392 #if defined(_KERNEL) || defined(_BOOT) || defined(TEST)
  393 
  394 int
  395 crom_add_quad(struct crom_chunk *chunk, uint32_t entry)
  396 {
  397         int index;
  398 
  399         index = chunk->data.crc_len;
  400         if (index >= CROM_MAX_CHUNK_LEN - 1) {
  401                 printf("too large chunk %d\n", index);
  402                 return(-1);
  403         }
  404         chunk->data.buf[index] = entry;
  405         chunk->data.crc_len++;
  406         return(index);
  407 }
  408 
  409 int
  410 crom_add_entry(struct crom_chunk *chunk, int key, int val)
  411 {
  412         struct csrreg *reg;
  413         uint32_t i;
  414         
  415         reg = (struct csrreg *)&i;
  416         reg->key = key;
  417         reg->val = val;
  418         return(crom_add_quad(chunk, (uint32_t) i));
  419 }
  420 
  421 int
  422 crom_add_chunk(struct crom_src *src, struct crom_chunk *parent,
  423                                 struct crom_chunk *child, int key)
  424 {
  425         int index;
  426 
  427         if (parent == NULL) {
  428                 STAILQ_INSERT_TAIL(&src->chunk_list, child, link);
  429                 return(0);
  430         }
  431 
  432         index = crom_add_entry(parent, key, 0);
  433         if (index < 0) {
  434                 return(-1);
  435         }
  436         child->ref_chunk = parent;
  437         child->ref_index = index;
  438         STAILQ_INSERT_TAIL(&src->chunk_list, child, link);
  439         return(index);
  440 }
  441 
  442 #define MAX_TEXT ((CROM_MAX_CHUNK_LEN + 1) * 4 - sizeof(struct csrtext))
  443 int
  444 crom_add_simple_text(struct crom_src *src, struct crom_chunk *parent,
  445                                 struct crom_chunk *chunk, char *buf)
  446 {
  447         struct csrtext *tl;
  448         uint32_t *p;
  449         int len, i;
  450         char t[MAX_TEXT];
  451 
  452         len = strlen(buf);
  453         if (len > MAX_TEXT) {
  454 #if defined(__DragonFly__) || __FreeBSD_version < 500000
  455                 printf("text(%d) trancated to %d.\n", len, MAX_TEXT);
  456 #else
  457                 printf("text(%d) trancated to %td.\n", len, MAX_TEXT);
  458 #endif
  459                 len = MAX_TEXT;
  460         }
  461 
  462         tl = (struct csrtext *) &chunk->data;
  463         tl->crc_len = howmany(sizeof(struct csrtext) + len, sizeof(uint32_t));
  464         tl->spec_id = 0;
  465         tl->spec_type = 0;
  466         tl->lang_id = 0;
  467         bzero(&t[0], roundup2(len, sizeof(uint32_t)));
  468         bcopy(buf, &t[0], len);
  469         p = (uint32_t *)&t[0];
  470         for (i = 0; i < howmany(len, sizeof(uint32_t)); i ++)
  471                 tl->text[i] = ntohl(*p++);
  472         return (crom_add_chunk(src, parent, chunk, CROM_TEXTLEAF));
  473 }
  474 
  475 static int
  476 crom_copy(uint32_t *src, uint32_t *dst, int *offset, int len, int maxlen)
  477 {
  478         if (*offset + len > maxlen) {
  479                 printf("Config. ROM is too large for the buffer\n");
  480                 return(-1);
  481         }
  482         bcopy(src, (char *)(dst + *offset), len * sizeof(uint32_t));
  483         *offset += len;
  484         return(0);
  485 }
  486 
  487 int
  488 crom_load(struct crom_src *src, uint32_t *buf, int maxlen)
  489 {
  490         struct crom_chunk *chunk, *parent;
  491         struct csrhdr *hdr;
  492 #if defined(_KERNEL) || defined(_BOOT)
  493         uint32_t *ptr;
  494         int i;
  495 #endif
  496         int count, offset;
  497         int len;
  498 
  499         offset = 0;
  500         /* Determine offset */
  501         STAILQ_FOREACH(chunk, &src->chunk_list, link) {
  502                 chunk->offset = offset;
  503                 /* Assume the offset of the parent is already known */
  504                 parent = chunk->ref_chunk;
  505                 if (parent != NULL) {
  506                         struct csrreg *reg;
  507                         reg = (struct csrreg *)
  508                                 &parent->data.buf[chunk->ref_index];
  509                         reg->val = offset -
  510                                 (parent->offset + 1 + chunk->ref_index);
  511                 }
  512                 offset += 1 + chunk->data.crc_len;
  513         }
  514 
  515         /* Calculate CRC and dump to the buffer */
  516         len = 1 + src->hdr.info_len;
  517         count = 0;
  518         if (crom_copy((uint32_t *)&src->hdr, buf, &count, len, maxlen) < 0)
  519                 return(-1);
  520         STAILQ_FOREACH(chunk, &src->chunk_list, link) {
  521                 chunk->data.crc =
  522                         crom_crc(&chunk->data.buf[0], chunk->data.crc_len);
  523 
  524                 len = 1 + chunk->data.crc_len;
  525                 if (crom_copy((uint32_t *)&chunk->data, buf,
  526                                         &count, len, maxlen) < 0)
  527                         return(-1);
  528         }
  529         hdr = (struct csrhdr *)buf;
  530         hdr->crc_len = count - 1;
  531         hdr->crc = crom_crc(&buf[1], hdr->crc_len);
  532 
  533 #if defined(_KERNEL) || defined(_BOOT)
  534         /* byte swap */
  535         ptr = buf;
  536         for (i = 0; i < count; i ++) {
  537                 *ptr = htonl(*ptr);
  538                 ptr++;
  539         }
  540 #endif
  541 
  542         return(count);
  543 }
  544 #endif
  545 
  546 #ifdef TEST
  547 int
  548 main () {
  549         struct crom_src src;
  550         struct crom_chunk root,unit1,unit2,unit3;
  551         struct crom_chunk text1,text2,text3,text4,text5,text6,text7;
  552         uint32_t buf[256], *p;
  553         int i;
  554 
  555         bzero(&src, sizeof(src));
  556         bzero(&root, sizeof(root));
  557         bzero(&unit1, sizeof(unit1));
  558         bzero(&unit2, sizeof(unit2));
  559         bzero(&unit3, sizeof(unit3));
  560         bzero(&text1, sizeof(text1));
  561         bzero(&text2, sizeof(text2));
  562         bzero(&text3, sizeof(text3));
  563         bzero(&text3, sizeof(text4));
  564         bzero(&text3, sizeof(text5));
  565         bzero(&text3, sizeof(text6));
  566         bzero(&text3, sizeof(text7));
  567         bzero(buf, sizeof(buf));
  568 
  569         /* BUS info sample */
  570         src.hdr.info_len = 4;
  571         src.businfo.bus_name = CSR_BUS_NAME_IEEE1394;
  572         src.businfo.eui64.hi = 0x11223344;
  573         src.businfo.eui64.lo = 0x55667788;
  574         src.businfo.link_spd = FWSPD_S400;
  575         src.businfo.generation = 0;
  576         src.businfo.max_rom = MAXROM_4;
  577         src.businfo.max_rec = 10;
  578         src.businfo.cyc_clk_acc = 100;
  579         src.businfo.pmc = 0;
  580         src.businfo.bmc = 1;
  581         src.businfo.isc = 1;
  582         src.businfo.cmc = 1;
  583         src.businfo.irmc = 1;
  584         STAILQ_INIT(&src.chunk_list);
  585 
  586         /* Root directory */
  587         crom_add_chunk(&src, NULL, &root, 0);
  588         crom_add_entry(&root, CSRKEY_NCAP, 0x123456);
  589         /* private company_id */
  590         crom_add_entry(&root, CSRKEY_VENDOR, 0xacde48);
  591 
  592 #ifdef __DragonFly__
  593         crom_add_simple_text(&src, &root, &text1, "DragonFly");
  594         crom_add_entry(&root, CSRKEY_HW, __DragonFly_cc_version);
  595         crom_add_simple_text(&src, &root, &text2, "DragonFly-1");
  596 #else
  597         crom_add_simple_text(&src, &root, &text1, "FreeBSD");
  598         crom_add_entry(&root, CSRKEY_HW, __FreeBSD_version);
  599         crom_add_simple_text(&src, &root, &text2, "FreeBSD-5");
  600 #endif
  601 
  602         /* SBP unit directory */
  603         crom_add_chunk(&src, &root, &unit1, CROM_UDIR);
  604         crom_add_entry(&unit1, CSRKEY_SPEC, CSRVAL_ANSIT10);
  605         crom_add_entry(&unit1, CSRKEY_VER, CSRVAL_T10SBP2);
  606         crom_add_entry(&unit1, CSRKEY_COM_SPEC, CSRVAL_ANSIT10);
  607         crom_add_entry(&unit1, CSRKEY_COM_SET, CSRVAL_SCSI);
  608         /* management_agent */
  609         crom_add_entry(&unit1, CROM_MGM, 0x1000);
  610         crom_add_entry(&unit1, CSRKEY_UNIT_CH, (10<<8) | 8);
  611         /* Device type and LUN */
  612         crom_add_entry(&unit1, CROM_LUN, 0);
  613         crom_add_entry(&unit1, CSRKEY_MODEL, 1);
  614         crom_add_simple_text(&src, &unit1, &text3, "scsi_target");
  615 
  616         /* RFC2734 IPv4 over IEEE1394 */
  617         crom_add_chunk(&src, &root, &unit2, CROM_UDIR);
  618         crom_add_entry(&unit2, CSRKEY_SPEC, CSRVAL_IETF);
  619         crom_add_simple_text(&src, &unit2, &text4, "IANA");
  620         crom_add_entry(&unit2, CSRKEY_VER, 1);
  621         crom_add_simple_text(&src, &unit2, &text5, "IPv4");
  622 
  623         /* RFC3146 IPv6 over IEEE1394 */
  624         crom_add_chunk(&src, &root, &unit3, CROM_UDIR);
  625         crom_add_entry(&unit3, CSRKEY_SPEC, CSRVAL_IETF);
  626         crom_add_simple_text(&src, &unit3, &text6, "IANA");
  627         crom_add_entry(&unit3, CSRKEY_VER, 2);
  628         crom_add_simple_text(&src, &unit3, &text7, "IPv6");
  629 
  630         crom_load(&src, buf, 256);
  631         p = buf;
  632 #define DUMP_FORMAT     "%08x %08x %08x %08x %08x %08x %08x %08x\n"
  633         for (i = 0; i < 256/8; i ++) {
  634                 printf(DUMP_FORMAT,
  635                         p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
  636                 p += 8;
  637         }
  638         return(0);
  639 }
  640 #endif
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FreeBSD/Linux Kernel Cross Reference sys/dev/firewire/fwcrom.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/firewire/fwcrom.c
