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