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Diffstat (limited to '')
| -rw-r--r-- | tools/firewire/decode-fcp.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/tools/firewire/decode-fcp.c b/tools/firewire/decode-fcp.c new file mode 100644 index 000000000..b67ebc884 --- /dev/null +++ b/tools/firewire/decode-fcp.c @@ -0,0 +1,214 @@ +// SPDX-License-Identifier: GPL-2.0 +#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; +} + |