The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/tools/firewire/decode-fcp.c

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    1 #include <linux/firewire-constants.h>
    2 #include <stdio.h>
    3 #include <stdlib.h>
    4 
    5 #include "list.h"
    6 #include "nosy-dump.h"
    7 
    8 #define CSR_FCP_COMMAND                 0xfffff0000b00ull
    9 #define CSR_FCP_RESPONSE                0xfffff0000d00ull
   10 
   11 static const char * const ctype_names[] = {
   12         [0x0] = "control",              [0x8] = "not implemented",
   13         [0x1] = "status",               [0x9] = "accepted",
   14         [0x2] = "specific inquiry",     [0xa] = "rejected",
   15         [0x3] = "notify",               [0xb] = "in transition",
   16         [0x4] = "general inquiry",      [0xc] = "stable",
   17         [0x5] = "(reserved 0x05)",      [0xd] = "changed",
   18         [0x6] = "(reserved 0x06)",      [0xe] = "(reserved 0x0e)",
   19         [0x7] = "(reserved 0x07)",      [0xf] = "interim",
   20 };
   21 
   22 static const char * const subunit_type_names[] = {
   23         [0x00] = "monitor",             [0x10] = "(reserved 0x10)",
   24         [0x01] = "audio",               [0x11] = "(reserved 0x11)",
   25         [0x02] = "printer",             [0x12] = "(reserved 0x12)",
   26         [0x03] = "disc",                [0x13] = "(reserved 0x13)",
   27         [0x04] = "tape recorder/player",[0x14] = "(reserved 0x14)",
   28         [0x05] = "tuner",               [0x15] = "(reserved 0x15)",
   29         [0x06] = "ca",                  [0x16] = "(reserved 0x16)",
   30         [0x07] = "camera",              [0x17] = "(reserved 0x17)",
   31         [0x08] = "(reserved 0x08)",     [0x18] = "(reserved 0x18)",
   32         [0x09] = "panel",               [0x19] = "(reserved 0x19)",
   33         [0x0a] = "bulletin board",      [0x1a] = "(reserved 0x1a)",
   34         [0x0b] = "camera storage",      [0x1b] = "(reserved 0x1b)",
   35         [0x0c] = "(reserved 0x0c)",     [0x1c] = "vendor unique",
   36         [0x0d] = "(reserved 0x0d)",     [0x1d] = "all subunit types",
   37         [0x0e] = "(reserved 0x0e)",     [0x1e] = "subunit_type extended to next byte",
   38         [0x0f] = "(reserved 0x0f)",     [0x1f] = "unit",
   39 };
   40 
   41 struct avc_enum {
   42         int value;
   43         const char *name;
   44 };
   45 
   46 struct avc_field {
   47         const char *name;       /* Short name for field. */
   48         int offset;             /* Location of field, specified in bits; */
   49                                 /* negative means from end of packet.    */
   50         int width;              /* Width of field, 0 means use data_length. */
   51         struct avc_enum *names;
   52 };
   53 
   54 struct avc_opcode_info {
   55         const char *name;
   56         struct avc_field fields[8];
   57 };
   58 
   59 struct avc_enum power_field_names[] = {
   60         { 0x70, "on" },
   61         { 0x60, "off" },
   62         { }
   63 };
   64 
   65 static const struct avc_opcode_info opcode_info[256] = {
   66 
   67         /* TA Document 1999026 */
   68         /* AV/C Digital Interface Command Set General Specification 4.0 */
   69         [0xb2] = { "power", {
   70                         { "state", 0, 8, power_field_names }
   71                 }
   72         },
   73         [0x30] = { "unit info", {
   74                         { "foo", 0, 8 },
   75                         { "unit_type", 8, 5 },
   76                         { "unit", 13, 3 },
   77                         { "company id", 16, 24 },
   78                 }
   79         },
   80         [0x31] = { "subunit info" },
   81         [0x01] = { "reserve" },
   82         [0xb0] = { "version" },
   83         [0x00] = { "vendor dependent" },
   84         [0x02] = { "plug info" },
   85         [0x12] = { "channel usage" },
   86         [0x24] = { "connect" },
   87         [0x20] = { "connect av" },
   88         [0x22] = { "connections" },
   89         [0x11] = { "digital input" },
   90         [0x10] = { "digital output" },
   91         [0x25] = { "disconnect" },
   92         [0x21] = { "disconnect av" },
   93         [0x19] = { "input plug signal format" },
   94         [0x18] = { "output plug signal format" },
   95         [0x1f] = { "general bus setup" },
   96 
   97         /* TA Document 1999025 */
   98         /* AV/C Descriptor Mechanism Specification Version 1.0 */
   99         [0x0c] = { "create descriptor" },
  100         [0x08] = { "open descriptor" },
  101         [0x09] = { "read descriptor" },
  102         [0x0a] = { "write descriptor" },
  103         [0x05] = { "open info block" },
  104         [0x06] = { "read info block" },
  105         [0x07] = { "write info block" },
  106         [0x0b] = { "search descriptor" },
  107         [0x0d] = { "object number select" },
  108 
  109         /* TA Document 1999015 */
  110         /* AV/C Command Set for Rate Control of Isochronous Data Flow 1.0 */
  111         [0xb3] = { "rate", {
  112                         { "subfunction", 0, 8 },
  113                         { "result", 8, 8 },
  114                         { "plug_type", 16, 8 },
  115                         { "plug_id", 16, 8 },
  116                 }
  117         },
  118 
  119         /* TA Document 1999008 */
  120         /* AV/C Audio Subunit Specification 1.0 */
  121         [0xb8] = { "function block" },
  122 
  123         /* TA Document 2001001 */
  124         /* AV/C Panel Subunit Specification 1.1 */
  125         [0x7d] = { "gui update" },
  126         [0x7e] = { "push gui data" },
  127         [0x7f] = { "user action" },
  128         [0x7c] = { "pass through" },
  129 
  130         /* */
  131         [0x26] = { "asynchronous connection" },
  132 };
  133 
  134 struct avc_frame {
  135         uint32_t operand0:8;
  136         uint32_t opcode:8;
  137         uint32_t subunit_id:3;
  138         uint32_t subunit_type:5;
  139         uint32_t ctype:4;
  140         uint32_t cts:4;
  141 };
  142 
  143 static void
  144 decode_avc(struct link_transaction *t)
  145 {
  146         struct avc_frame *frame =
  147             (struct avc_frame *) t->request->packet.write_block.data;
  148         const struct avc_opcode_info *info;
  149         const char *name;
  150         char buffer[32];
  151         int i;
  152 
  153         info = &opcode_info[frame->opcode];
  154         if (info->name == NULL) {
  155                 snprintf(buffer, sizeof(buffer),
  156                          "(unknown opcode 0x%02x)", frame->opcode);
  157                 name = buffer;
  158         } else {
  159                 name = info->name;
  160         }
  161 
  162         printf("av/c %s, subunit_type=%s, subunit_id=%d, opcode=%s",
  163             ctype_names[frame->ctype], subunit_type_names[frame->subunit_type],
  164             frame->subunit_id, name);
  165 
  166         for (i = 0; info->fields[i].name != NULL; i++)
  167                 printf(", %s", info->fields[i].name);
  168 
  169         printf("\n");
  170 }
  171 
  172 int
  173 decode_fcp(struct link_transaction *t)
  174 {
  175         struct avc_frame *frame =
  176             (struct avc_frame *) t->request->packet.write_block.data;
  177         unsigned long long offset =
  178             ((unsigned long long) t->request->packet.common.offset_high << 32) |
  179             t->request->packet.common.offset_low;
  180 
  181         if (t->request->packet.common.tcode != TCODE_WRITE_BLOCK_REQUEST)
  182                 return 0;
  183 
  184         if (offset == CSR_FCP_COMMAND || offset == CSR_FCP_RESPONSE) {
  185                 switch (frame->cts) {
  186                 case 0x00:
  187                         decode_avc(t);
  188                         break;
  189                 case 0x01:
  190                         printf("cal fcp frame (cts=0x01)\n");
  191                         break;
  192                 case 0x02:
  193                         printf("ehs fcp frame (cts=0x02)\n");
  194                         break;
  195                 case 0x03:
  196                         printf("havi fcp frame (cts=0x03)\n");
  197                         break;
  198                 case 0x0e:
  199                         printf("vendor specific fcp frame (cts=0x0e)\n");
  200                         break;
  201                 case 0x0f:
  202                         printf("extended cts\n");
  203                         break;
  204                 default:
  205                         printf("reserved fcp frame (ctx=0x%02x)\n", frame->cts);
  206                         break;
  207                 }
  208                 return 1;
  209         }
  210 
  211         return 0;
  212 }
  213 

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