diff options
Diffstat (limited to 'tools/firewire/decode-fcp.c')
| -rw-r--r-- | tools/firewire/decode-fcp.c | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/tools/firewire/decode-fcp.c b/tools/firewire/decode-fcp.c new file mode 100644 index 000000000000..cb9a31b37530 --- /dev/null +++ b/tools/firewire/decode-fcp.c @@ -0,0 +1,239 @@ +#include <stdlib.h> +#include <stdio.h> +#include "list.h" +#include "nosy-dump.h" + +#define CSR_FCP_COMMAND 0xfffff0000b00ull +#define CSR_FCP_RESPONSE 0xfffff0000d00ull + +static const char * const ctype_names[16] = { + "control", + "status", + "specific inquiry", + "notify", + "general inquiry", + "(reserved 0x05)", + "(reserved 0x06)", + "(reserved 0x07)", + "not implemented", + "accepted", + "rejected", + "in transition", + "stable", + "changed", + "(reserved 0x0e)", + "interim" +}; + +static const char * const subunit_type_names[32] = { + "monitor", + "audio", + "printer", + "disc", + "tape recorder/player", + "tuner", + "ca", + "camera", + "(reserved 0x08)", + "panel", + "bulletin board", + "camera storage", + "(reserved 0x0c)", + "(reserved 0x0d)", + "(reserved 0x0e)", + "(reserved 0x0f)", + "(reserved 0x10)", + "(reserved 0x11)", + "(reserved 0x12)", + "(reserved 0x13)", + "(reserved 0x14)", + "(reserved 0x15)", + "(reserved 0x16)", + "(reserved 0x17)", + "(reserved 0x18)", + "(reserved 0x19)", + "(reserved 0x1a)", + "(reserved 0x1b)", + "vendor unique", + "all subunit types", + "subunit_type extended to next byte", + "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 + * Version 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 { + unsigned int operand0 : 8; + unsigned int opcode : 8; + unsigned int subunit_id : 3; + unsigned int subunit_type : 5; + unsigned int ctype : 4; + unsigned int 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; + + 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) + 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; +} + |