decode-fcp.c
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#include <linux/firewire-constants.h>
#include <stdio.h>
#include <stdlib.h>
#include "list.h"
#include "nosy-dump.h"
#define CSR_FCP_COMMAND 0xfffff0000b00ull
#define CSR_FCP_RESPONSE 0xfffff0000d00ull
static const char * const ctype_names[] = {
[0x0] = "control", [0x8] = "not implemented",
[0x1] = "status", [0x9] = "accepted",
[0x2] = "specific inquiry", [0xa] = "rejected",
[0x3] = "notify", [0xb] = "in transition",
[0x4] = "general inquiry", [0xc] = "stable",
[0x5] = "(reserved 0x05)", [0xd] = "changed",
[0x6] = "(reserved 0x06)", [0xe] = "(reserved 0x0e)",
[0x7] = "(reserved 0x07)", [0xf] = "interim",
};
static const char * const subunit_type_names[] = {
[0x00] = "monitor", [0x10] = "(reserved 0x10)",
[0x01] = "audio", [0x11] = "(reserved 0x11)",
[0x02] = "printer", [0x12] = "(reserved 0x12)",
[0x03] = "disc", [0x13] = "(reserved 0x13)",
[0x04] = "tape recorder/player",[0x14] = "(reserved 0x14)",
[0x05] = "tuner", [0x15] = "(reserved 0x15)",
[0x06] = "ca", [0x16] = "(reserved 0x16)",
[0x07] = "camera", [0x17] = "(reserved 0x17)",
[0x08] = "(reserved 0x08)", [0x18] = "(reserved 0x18)",
[0x09] = "panel", [0x19] = "(reserved 0x19)",
[0x0a] = "bulletin board", [0x1a] = "(reserved 0x1a)",
[0x0b] = "camera storage", [0x1b] = "(reserved 0x1b)",
[0x0c] = "(reserved 0x0c)", [0x1c] = "vendor unique",
[0x0d] = "(reserved 0x0d)", [0x1d] = "all subunit types",
[0x0e] = "(reserved 0x0e)", [0x1e] = "subunit_type extended to next byte",
[0x0f] = "(reserved 0x0f)", [0x1f] = "unit",
};
struct avc_enum {
int value;
const char *name;
};
struct avc_field {
const char *name; /* Short name for field. */
int offset; /* Location of field, specified in bits; */
/* negative means from end of packet. */
int width; /* Width of field, 0 means use data_length. */
struct avc_enum *names;
};
struct avc_opcode_info {
const char *name;
struct avc_field fields[8];
};
struct avc_enum power_field_names[] = {
{ 0x70, "on" },
{ 0x60, "off" },
{ }
};
static const struct avc_opcode_info opcode_info[256] = {
/* TA Document 1999026 */
/* AV/C Digital Interface Command Set General Specification 4.0 */
[0xb2] = { "power", {
{ "state", 0, 8, power_field_names }
}
},
[0x30] = { "unit info", {
{ "foo", 0, 8 },
{ "unit_type", 8, 5 },
{ "unit", 13, 3 },
{ "company id", 16, 24 },
}
},
[0x31] = { "subunit info" },
[0x01] = { "reserve" },
[0xb0] = { "version" },
[0x00] = { "vendor dependent" },
[0x02] = { "plug info" },
[0x12] = { "channel usage" },
[0x24] = { "connect" },
[0x20] = { "connect av" },
[0x22] = { "connections" },
[0x11] = { "digital input" },
[0x10] = { "digital output" },
[0x25] = { "disconnect" },
[0x21] = { "disconnect av" },
[0x19] = { "input plug signal format" },
[0x18] = { "output plug signal format" },
[0x1f] = { "general bus setup" },
/* TA Document 1999025 */
/* AV/C Descriptor Mechanism Specification Version 1.0 */
[0x0c] = { "create descriptor" },
[0x08] = { "open descriptor" },
[0x09] = { "read descriptor" },
[0x0a] = { "write descriptor" },
[0x05] = { "open info block" },
[0x06] = { "read info block" },
[0x07] = { "write info block" },
[0x0b] = { "search descriptor" },
[0x0d] = { "object number select" },
/* TA Document 1999015 */
/* AV/C Command Set for Rate Control of Isochronous Data Flow 1.0 */
[0xb3] = { "rate", {
{ "subfunction", 0, 8 },
{ "result", 8, 8 },
{ "plug_type", 16, 8 },
{ "plug_id", 16, 8 },
}
},
/* TA Document 1999008 */
/* AV/C Audio Subunit Specification 1.0 */
[0xb8] = { "function block" },
/* TA Document 2001001 */
/* AV/C Panel Subunit Specification 1.1 */
[0x7d] = { "gui update" },
[0x7e] = { "push gui data" },
[0x7f] = { "user action" },
[0x7c] = { "pass through" },
/* */
[0x26] = { "asynchronous connection" },
};
struct avc_frame {
uint32_t operand0:8;
uint32_t opcode:8;
uint32_t subunit_id:3;
uint32_t subunit_type:5;
uint32_t ctype:4;
uint32_t cts:4;
};
static void
decode_avc(struct link_transaction *t)
{
struct avc_frame *frame =
(struct avc_frame *) t->request->packet.write_block.data;
const struct avc_opcode_info *info;
const char *name;
char buffer[32];
int i;
info = &opcode_info[frame->opcode];
if (info->name == NULL) {
snprintf(buffer, sizeof(buffer),
"(unknown opcode 0x%02x)", frame->opcode);
name = buffer;
} else {
name = info->name;
}
printf("av/c %s, subunit_type=%s, subunit_id=%d, opcode=%s",
ctype_names[frame->ctype], subunit_type_names[frame->subunit_type],
frame->subunit_id, name);
for (i = 0; info->fields[i].name != NULL; i++)
printf(", %s", info->fields[i].name);
printf("\n");
}
int
decode_fcp(struct link_transaction *t)
{
struct avc_frame *frame =
(struct avc_frame *) t->request->packet.write_block.data;
unsigned long long offset =
((unsigned long long) t->request->packet.common.offset_high << 32) |
t->request->packet.common.offset_low;
if (t->request->packet.common.tcode != TCODE_WRITE_BLOCK_REQUEST)
return 0;
if (offset == CSR_FCP_COMMAND || offset == CSR_FCP_RESPONSE) {
switch (frame->cts) {
case 0x00:
decode_avc(t);
break;
case 0x01:
printf("cal fcp frame (cts=0x01)\n");
break;
case 0x02:
printf("ehs fcp frame (cts=0x02)\n");
break;
case 0x03:
printf("havi fcp frame (cts=0x03)\n");
break;
case 0x0e:
printf("vendor specific fcp frame (cts=0x0e)\n");
break;
case 0x0f:
printf("extended cts\n");
break;
default:
printf("reserved fcp frame (ctx=0x%02x)\n", frame->cts);
break;
}
return 1;
}
return 0;
}